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<title>In Vitro Assay for Assessing Nanoparticle Effects on Monocyte/Macrophage Phagocytic Function - National Cancer Institute’s Nanotechnology Characterization Laboratory Assay Cascade Protocols - NCBI Bookshelf</title>
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<meta name="robots" content="INDEX,FOLLOW,NOARCHIVE" /><meta name="citation_inbook_title" content="National Cancer Institute’s Nanotechnology Characterization Laboratory Assay Cascade Protocols [Internet]" /><meta name="citation_title" content="In Vitro Assay for Assessing Nanoparticle Effects on Monocyte/Macrophage Phagocytic Function" /><meta name="citation_publisher" content="National Cancer Institute (US)" /><meta name="citation_date" content="2020/05" /><meta name="citation_author" content="Timothy M. Potter" /><meta name="citation_author" content="Edward Cedrone" /><meta name="citation_author" content="Barry W. Neun" /><meta name="citation_author" content="Marina A. 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<div class="pre-content"><div><div class="bk_prnt"><p class="small">NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.</p><p>National Cancer Institute’s Nanotechnology Characterization Laboratory Assay Cascade Protocols [Internet]. Bethesda (MD): National Cancer Institute (US); 2005 May 1-. doi: 10.17917/WZGC-DG48</p></div><div class="iconblock clearfix whole_rhythm no_top_margin bk_noprnt"><a class="img_link icnblk_img" title="Table of Contents Page" href="/books/n/nciprotocols/"><img class="source-thumb" src="/corehtml/pmc/pmcgifs/bookshelf/thumbs/th-nciprotocols-lrg.png" alt="Cover of National Cancer Institute’s Nanotechnology Characterization Laboratory Assay Cascade Protocols" height="100px" width="80px" /></a><div class="icnblk_cntnt eight_col"><h2>National Cancer Institute’s Nanotechnology Characterization Laboratory Assay Cascade Protocols [Internet].</h2><a data-jig="ncbitoggler" href="#__NBK604902_dtls__">Show details</a><div style="display:none" class="ui-widget" id="__NBK604902_dtls__"><div>Bethesda (MD): <a href="https://www.cancer.gov/nano/research/ncl" ref="pagearea=page-banner&targetsite=external&targetcat=link&targettype=publisher">National Cancer Institute (US)</a>; 2005 May 1-.</div></div><div class="half_rhythm"><ul class="inline_list"><li style="margin-right:1em"><a class="bk_cntns" href="/books/n/nciprotocols/">Contents</a></li></ul></div><div class="bk_noprnt"><form method="get" action="/books/n/nciprotocols/" id="bk_srch"><div class="bk_search"><label for="bk_term" class="offscreen_noflow">Search term</label><input type="text" title="Search this book" id="bk_term" name="term" value="" data-jig="ncbiclearbutton" /> <input type="submit" class="jig-ncbibutton" value="Search this book" submit="false" style="padding: 0.1em 0.4em;" /></div></form></div></div><div class="icnblk_cntnt two_col"><div class="pagination bk_noprnt"><a class="active page_link prev" href="/books/n/nciprotocols/ncipr54/" title="Previous page in this title">< Prev</a><a class="active page_link next" href="/books/n/nciprotocols/ncipr48/" title="Next page in this title">Next ></a></div></div></div></div></div>
|
||
<div class="main-content lit-style" itemscope="itemscope" itemtype="http://schema.org/CreativeWork"><div class="meta-content fm-sec"><h1 id="_NBK604902_"><span class="label">NCL Method ITA-9.2</span><span class="title" itemprop="name">In Vitro Assay for Assessing Nanoparticle Effects on Monocyte/Macrophage Phagocytic Function</span></h1><div class="subtitle whole_rhythm">Version 1</div><p class="contrib-group"><span itemprop="author">Timothy M. Potter</span>, <span itemprop="author">Edward Cedrone</span>, <span itemprop="author">Barry W. Neun</span>, and <span itemprop="author">Marina A. Dobrovolskaia</span>.</p><a data-jig="ncbitoggler" href="#__NBK604902_ai__" style="border:0;text-decoration:none">Author Information and Affiliations</a><div style="display:none" class="ui-widget" id="__NBK604902_ai__"><p class="contrib-group"><h4>Authors</h4><span itemprop="author">Timothy M. Potter</span>, <span itemprop="author">Edward Cedrone</span>, <span itemprop="author">Barry W. Neun</span>, and <span itemprop="author">Marina A. Dobrovolskaia</span><sup><img src="/corehtml/pmc/pmcgifs/corrauth.gif" alt="corresponding author" /></sup><sup>1</sup>.</p><h4>Contact</h4><div class="affiliation"><sup>1</sup> <span class="email-label">Email: </span><a href="mailto:dev@null" data-email="vog.hin.liam@aniram" class="oemail">vog.hin.liam@aniram</a></div><div class="affiliation"><sup>1</sup> Nanotechnology Characterization Lab, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Frederick, MD 21702</div><div><sup><img src="/corehtml/pmc/pmcgifs/corrauth.gif" alt="corresponding author" /></sup>Corresponding author.</div></div><p class="small">Published: <span itemprop="datePublished">May 2020</span>.</p></div><div class="jig-ncbiinpagenav body-content whole_rhythm" data-jigconfig="allHeadingLevels: ['h2'],smoothScroll: false" itemprop="text"><div id="ncipr49.s1"><h2 id="_ncipr49_s1_">1. Introduction</h2><p>This document describes a protocol for evaluation of nanoparticle effects on the phagocytic function of immune cells. Phagocytosis is a receptor-mediated endocytosis peculiar to the phagocytic cells, e.g. cells of the mononuclear phagocytic system (MPS). Phagocytosis is an active process and requires actin polymerization. There are four primary receptors which mediate phagocytic uptake. Phagocytosis via three of these receptors (complement receptor (CR), FcγR receptor, and mannose receptor (MR)) is accompanied by inflammatory reactions (cytokine secretion). Phagocytosis via the fourth receptor (scavenger receptor (SR)) is not accompanied by inflammatory responses [<a class="bk_pop" href="#ncipr49.ref1">1</a>–<a class="bk_pop" href="#ncipr49.ref5">5</a>].</p></div><div id="ncipr49.s2"><h2 id="_ncipr49_s2_">2. Principles and Limitation</h2><p>HL-60 promyelocytic cells are used as the model phagocytic cell line, and Zymosan A is used as a model bioparticle. The phagocytic activity of HL-60 cells is visualized with luminol. Luminol is a dye which is not luminescent unless exposed to the low pH of the phagolysosome. Nanoparticles may either enhance or inhibit the cell phagocytic function. Such effects are monitored by comparing the Zymosan A uptake in control cells to that of cells exposed to test nanomaterials 24 hours prior to the addition of Zymosan A.</p></div><div id="ncipr49.s3"><h2 id="_ncipr49_s3_">3. Reagents, Materials, Cell Lines, and Equipment</h2><blockquote><p><i>Note: The NCL does not endorse any of the suppliers listed below; these reagents were used in the development of the protocol and their inclusion is for informational purposes only. Equivalent supplies from alternate vendors can be substituted. Please note that suppliers may undergo a name change due to a variety of factors. Brands and part numbers typically remain consistent but may also change over time</i>.</p></blockquote><dl id="ncipr49.l1" class="temp-labeled-list"><dt>3.1.</dt><dd id="ncipr49.lt1"><p class="no_top_margin">Reagents
|
||
<dl id="ncipr49.l2" class="temp-labeled-list"><dt>3.1.1.</dt><dd id="ncipr49.lt2"><p class="no_top_margin">Phosphate buffered saline (PBS) (GE Life Sciences, Hyclone, SH30256.01)</p></dd><dt>3.1.2.</dt><dd id="ncipr49.lt3"><p class="no_top_margin">Zymosan A (Sigma-Aldrich, Z4250)</p></dd><dt>3.1.3.</dt><dd id="ncipr49.lt4"><p class="no_top_margin">Fetal bovine serum (FBS) (GE Life Sciences, Hyclone, SH30070.03)</p></dd><dt>3.1.4.</dt><dd id="ncipr49.lt5"><p class="no_top_margin">RPMI-1640 (GE Life Sciences, HyClone, SH30096.01)</p></dd><dt>3.1.5.</dt><dd id="ncipr49.lt6"><p class="no_top_margin">Penicillin streptomycin solution (GE Life Sciences, Hyclone, SV30010)</p></dd><dt>3.1.6.</dt><dd id="ncipr49.lt7"><p class="no_top_margin">Trypan Blue solution (Gibco, 15250-061)</p></dd><dt>3.1.7.</dt><dd id="ncipr49.lt8"><p class="no_top_margin">Human AB serum or plasma pooled from at least three donors</p></dd><dt>3.1.8.</dt><dd id="ncipr49.lt9"><p class="no_top_margin">Luminol (Sigma-Aldrich, 123072)</p></dd></dl></p></dd><dt>3.2.</dt><dd id="ncipr49.lt10"><p class="no_top_margin">Materials
|
||
<dl id="ncipr49.l3" class="temp-labeled-list"><dt>3.2.1.</dt><dd id="ncipr49.lt11"><p class="no_top_margin">Pipettes covering the range 0.05 to 10 mL</p></dd><dt>3.2.2.</dt><dd id="ncipr49.lt12"><p class="no_top_margin">Flat bottom 96-well white luminescence plates</p></dd><dt>3.2.3.</dt><dd id="ncipr49.lt13"><p class="no_top_margin">Polypropylene tubes, 50 and 15 mL</p></dd></dl></p></dd><dt>3.3.</dt><dd id="ncipr49.lt14"><p class="no_top_margin">Cell Lines
|
||
<dl id="ncipr49.l4" class="temp-labeled-list"><dt>3.3.1.</dt><dd id="ncipr49.lt15"><p class="no_top_margin">HL-60 promyelocytic cells (ATCC, CCL-240)</p></dd></dl></p></dd><dt>3.4.</dt><dd id="ncipr49.lt16"><p class="no_top_margin">Equipment
|
||
<dl id="ncipr49.l5" class="temp-labeled-list"><dt>3.4.1.</dt><dd id="ncipr49.lt17"><p class="no_top_margin">Centrifuge capable of operating at 400xg and 2000xg</p></dd><dt>3.4.2.</dt><dd id="ncipr49.lt18"><p class="no_top_margin">Refrigerator, 2-8ºC</p></dd><dt>3.4.3.</dt><dd id="ncipr49.lt19"><p class="no_top_margin">Freezer, −20ºC</p></dd><dt>3.4.4.</dt><dd id="ncipr49.lt20"><p class="no_top_margin">Cell culture incubator with 5% CO<sub>2</sub> and 95% humidity</p></dd><dt>3.4.5.</dt><dd id="ncipr49.lt21"><p class="no_top_margin">Biohazard safety cabinet approved for level II handling of biological material</p></dd><dt>3.4.6.</dt><dd id="ncipr49.lt22"><p class="no_top_margin">Inverted microscope</p></dd><dt>3.4.7.</dt><dd id="ncipr49.lt23"><p class="no_top_margin">Vortex</p></dd><dt>3.4.8.</dt><dd id="ncipr49.lt24"><p class="no_top_margin">Hemocytometer</p></dd><dt>3.4.9.</dt><dd id="ncipr49.lt25"><p class="no_top_margin">Plate reader capable of working in luminescence mode
|
||
<blockquote><p><i>Note: The plates used for this assay have a solid white bottom; therefore, the plate should be read from the top. Depending on the type of the plate reader, one may need to use plate adaptor to provide optimal conditions for top read</i>.</p></blockquote></p></dd><dt>3.4.10.</dt><dd id="ncipr49.lt26"><p class="no_top_margin">Warm gel-pack
|
||
<blockquote><p><i>Note: This material is optional and may be omitted. It is used to keep the plate warm for optimal phagocytosis. However, if it takes longer than 2 minutes to transfer the plate to the plate reader after addition of all reagents, the phagocytosis process will begin before one starts to analyze the plate on the plate reader</i>.</p></blockquote></p></dd></dl></p></dd></dl></div><div id="ncipr49.s4"><h2 id="_ncipr49_s4_">4. Reagent and Control Preparation</h2><dl id="ncipr49.l6" class="temp-labeled-list"><dt>4.1.</dt><dd id="ncipr49.lt27"><p class="no_top_margin">
|
||
<u>Complete RPMI-1640 Medium</u>
|
||
</p><p>The complete RPMI medium should contain the following reagents:
|
||
<ul id="ncipr49.l7" class="simple-list"><li id="ncipr49.lt28" class="half_rhythm"><div>20% FBS (heat inactivated)</div></li><li id="ncipr49.lt29" class="half_rhythm"><div>4 mM L-glutamine</div></li><li id="ncipr49.lt30" class="half_rhythm"><div>100 U/mL penicillin</div></li><li id="ncipr49.lt31" class="half_rhythm"><div>100 µg/mL streptomycin sulfate</div></li></ul></p><p>Store at 2-8ºC protected from light for no longer than 1 month. Before use, warm in a water bath.</p></dd><dt>4.2.</dt><dd id="ncipr49.lt32"><p class="no_top_margin">
|
||
<u>Zymosan A Stock</u>
|
||
</p><p>Prepare Zymosan A stock at final concentration of 2 mg/mL in PBS. Use freshly prepared.</p></dd><dt>4.3.</dt><dd id="ncipr49.lt33"><p class="no_top_margin">
|
||
<u>Opsonized Zymosan A</u>
|
||
</p><p>Combine Zymosan A stock and human AB serum or plasma. Use 1 mL of serum/plasma per each 0.5 mL of zymosan A stock. Incubate Zymosan A with serum/plasma for 30 minutes at 37°C. Wash Zymosan A particles with PBS (use 1 mL of PBS per each 0.5 mL of original Zymosan stock and a centrifuge setting of 2000xg for 2 min) and resuspend in PBS to a final concentration of 2 mg/mL.</p></dd><dt>4.4.</dt><dd id="ncipr49.lt34"><p class="no_top_margin">
|
||
<u>Negative Control</u>
|
||
</p><p>Use PBS as a negative control. Process this control the same way as test nanoparticle.</p></dd><dt>4.5.</dt><dd id="ncipr49.lt35"><p class="no_top_margin">
|
||
<u>Heat-Inactivated Fetal Bovine Serum</u>
|
||
</p><p>Thaw a bottle of FBS at room temperature, or overnight at 2-8ºC and allow to equilibrate to room temperature. Incubate 30 minutes at 56ºC in a water bath, mixing every 5 minutes. Single use aliquots may be stored at 2-8ºC for up to one month or at a nominal temperature of −20ºC indefinitely.</p></dd><dt>4.6.</dt><dd id="ncipr49.lt36"><p class="no_top_margin">
|
||
<u>Luminol Stock (10 mM in DMSO)</u>
|
||
</p><p>Dissolve luminol in DMSO to a final concentration of 10 mM, e.g. dissolve 17.7 mg of luminal in 10 mL of DMSO. Prepare single use aliquots and store at −20°C; protect from light.</p></dd><dt>4.7.</dt><dd id="ncipr49.lt37"><p class="no_top_margin">
|
||
<u>Luminol Working Solution (250 µM in PBS).</u>
|
||
</p><p>On the day of the experiment, thaw an aliquot of luminol stock solution and dilute with PBS to a final concentration of 250 µM, e.g. add 250 µL of 10 mM stock into 9.750 mL of PBS. Protect from light. Discard unused portion.</p></dd><dt>4.8.</dt><dd id="ncipr49.lt38"><p class="no_top_margin">
|
||
<u>Vehicle Control</u>
|
||
</p><p>Vehicle control is the buffer or media used to formulate test nanomaterials. Common excipients used in nanoformulations are trehalose, sucrose, and albumin. However, other reagents and materials are also used alone or in combination. Vehicle control should match formulation buffer of the test-nanomaterial by both composition and concentration. This control can be skipped if nanoparticles are stored in PBS.</p></dd></dl></div><div id="ncipr49.s5"><h2 id="_ncipr49_s5_">5. Preparation of Study Samples</h2><p>This assay requires 2 mL of nanoparticles at 5x the highest test concentration dissolved/resuspended in PBS. The concentration is selected based on the plasma concentration of the nanoparticle at the intended therapeutic dose. For the purpose of this protocol this concentration is called “theoretical plasma concentration”. Considerations for estimating theoretical plasma concentration were reviewed elsewhere [<a class="bk_pop" href="#ncipr49.ref6">6</a>] and are summarized in <a href="/books/NBK604902/box/ncipr49.box15/?report=objectonly" target="object" rid-ob="figobncipr49box15">Box 1</a> below.</p><div id="ncipr49.box15" class="box"><h3><span class="label">Box 1</span><span class="title">Example Calculation to Determine Nanoparticle Concentration for In Vitro Tests</span></h3><p>In this example, we assume a mouse dose of 123 mg/kg. Therefore, the scaled equivalent human dose would be:
|
||
<div class="pmc_disp_formula whole_rhythm clearfix" id="ncipr49.deq1"><div class="inline_block pmc_inline_block pmc_va_middle pmc_hide_overflow twelve_col"><math id="ncipr49.eq1" display="block"><mi>H</mi><mi>u</mi><mi>m</mi><mi>a</mi><mi>n</mi><mtext> </mtext><mi>d</mi><mi>o</mi><mi>s</mi><mi>e</mi><mo>=</mo><mfrac><mrow><mi>m</mi><mi>o</mi><mi>u</mi><mi>s</mi><mi>e</mi><mtext> </mtext><mi>d</mi><mi>o</mi><mi>s</mi><mi>e</mi></mrow><mrow><mn>12.3</mn></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>123</mn><mtext> </mtext><mi>m</mi><mi>g</mi><mo>/</mo><mi>k</mi><mi>g</mi></mrow><mrow><mn>12.3</mn></mrow></mfrac><mo>=</mo><mn>10</mn><mtext> </mtext><mi>m</mi><mi>g</mi><mo>/</mo><mi>k</mi><mi>g</mi></math></div><div class="inline_block pmc_inline_block pmc_va_middle pmc_hide_overflow last bk_equ_label "><div><span class="nowrap"></span></div></div></div>
|
||
Blood volume constitutes approximately 8% of the body weight. Therefore, an average human of 70 kg body weight has approximately 5.6 L of blood. Assuming all the nanoparticle injected goes into the systemic circulation, this provides a rough approximation of the potential maximum nanoparticle concentration in blood, which is used as the in vitro test concentration.</p><div class="pmc_disp_formula whole_rhythm clearfix" id="ncipr49.deq2"><div class="inline_block pmc_inline_block pmc_va_middle pmc_hide_overflow twelve_col">
|
||
<math id="ncipr49.eq2" display="block"><mi>i</mi><mi>n</mi><mtext> </mtext><mi>v</mi><mi>i</mi><mi>t</mi><mi>r</mi><mi>o</mi><mtext> </mtext><mi>c</mi><mi>o</mi><mi>n</mi><mi>c</mi><mi>e</mi><mi>n</mi><mi>t</mi><mi>r</mi><mi>a</mi><mi>t</mi><mi>i</mi><mi>o</mi><msub><mi>n</mi><mrow><mi>h</mi><mi>u</mi><mi>m</mi><mi>a</mi><mi>n</mi><mtext> </mtext><mi>m</mi><mi>a</mi><mi>t</mi><mi>r</mi><mi>i</mi><mi>x</mi></mrow></msub><mo>=</mo><mfrac><mrow><mi>h</mi><mi>u</mi><mi>m</mi><mi>a</mi><mi>n</mi><mtext> </mtext><mi>d</mi><mi>o</mi><mi>s</mi><mi>e</mi></mrow><mrow><mi>h</mi><mi>u</mi><mi>m</mi><mi>a</mi><mi>n</mi><mtext> </mtext><mi>b</mi><mi>l</mi><mi>o</mi><mi>o</mi><mi>d</mi><mtext> </mtext><mi>v</mi><mi>o</mi><mi>l</mi><mi>u</mi><mi>m</mi><mi>e</mi></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>70</mn><mtext> </mtext><mi>k</mi><mi>g</mi><mtext> </mtext><mo>∗</mo><mtext> </mtext><mn>10</mn><mtext> </mtext><mi>m</mi><mi>g</mi><mo>/</mo><mi>k</mi><mi>g</mi></mrow><mrow><mn>5.6</mn><mtext> </mtext><mi>L</mi></mrow></mfrac><mo>=</mo><mn>0.125</mn><mtext> </mtext><mi>m</mi><mi>g</mi><mo>/</mo><mi>m</mi><mi>L</mi></math>
|
||
</div><div class="inline_block pmc_inline_block pmc_va_middle pmc_hide_overflow last bk_equ_label "><div><span class="nowrap"></span></div></div></div></div><p>The assay will evaluate 4 concentrations: 10X (or when feasible 100X, 30X or 5X) of the theoretical plasma concentration, theoretical plasma concentration and two 1:5 serial dilutions of the theoretical plasma concentration. When the intended therapeutic concentration is unknown, the highest final concentration is 1 mg/mL or the highest reasonably achievable concentration.</p><p>For example if the final theoretical plasma concentration to be tested is 0.2 mg/mL, then a stock of 10 mg/mL will be prepared and diluted 10-fold (1 mg/mL), followed by serial 5-fold dilutions (0.2 and 0.04 mg/mL). When 200 μL of each of these samples are combined in a culture plate well with 800 μL of cells, the final concentrations of nanoparticles are 0.008, 0.04, 0.2, 2 mg/mL. Each nanoparticle concentration is plated six times.</p></div><div id="ncipr49.s6"><h2 id="_ncipr49_s6_">6. Cell Preparation</h2><p>HL-60 is a non-adherent promyelocytic cell line derived by S.J. Collins, et al. from a patient with acute promyelocytic leukemia [<a class="bk_pop" href="#ncipr49.ref5">5</a>]. Cultures can be maintained by the addition of fresh medium or replacement of medium. Alternatively, cultures can be established by centrifugation with subsequent resuspension at 1x10<sup>5</sup> viable cells/mL. <b>Do not allow cell concentration to exceed 1x10<sup>6</sup> cells/mL.</b> Maintain cell density between 1x10<sup>5</sup> and 1x10<sup>6</sup> viable cells/mL. On the day of the experiment, count cells using trypan blue. If the cell viability is ≥90% proceed to the next step.</p></div><div id="ncipr49.s7"><h2 id="_ncipr49_s7_">7. Experimental Procedure, Day 1</h2><dl id="ncipr49.l8" class="temp-labeled-list"><dt>7.1.</dt><dd id="ncipr49.lt39"><p class="no_top_margin">Adjust cell concentration to 1.25 × 10<sup>6</sup> cells per mL using complete medium.</p></dd><dt>7.2.</dt><dd id="ncipr49.lt40"><p class="no_top_margin">Plate 800 μL of the cell suspension from <a href="#ncipr49.lt39">step 7.1</a> per well on 24-well plate. Prepare 6 wells for each nanoparticle concentration, vehicle control, negative control and 8 wells for untreated cells. Refer to <a href="#ncipr49.app">Appendix</a> for example of a plate map.</p></dd><dt>7.3.</dt><dd id="ncipr49.lt41"><p class="no_top_margin">Add 200 μL of test samples to corresponding wells. Cover the plates and incubate at 37°C overnight (18-24 hr).</p></dd></dl></div><div id="ncipr49.s8"><h2 id="_ncipr49_s8_">8. Experimental Procedure, Day 2</h2><dl id="ncipr49.l9" class="temp-labeled-list"><dt>8.1.</dt><dd id="ncipr49.lt42"><p class="no_top_margin">Turn on plate reader, allowing it to warm up to 37°C. Place an empty white 96-well test plate inside the plate reader chamber, allowing it to warm to 37°C as well. Set up the instrumental parameters.</p></dd><dt>8.2.</dt><dd id="ncipr49.lt43"><p class="no_top_margin">Harvest cells from <a href="#ncipr49.lt41">step 7.3</a> into Eppendorf tubes and wash twice with PBS to remove nanoparticles. Do not pool the content of individual wells within the treatment group; each well serves as a separate replicate.</p></dd><dt>8.3.</dt><dd id="ncipr49.lt44"><p class="no_top_margin">After the last wash reconstitute cell pellet in 240 µL of complete media. Use 20 µL of this suspension for determining cell count and viability by trypan blue staining or other relevant procedure.</p></dd><dt>8.4.</dt><dd id="ncipr49.lt45"><p class="no_top_margin">Adjust cell concentration to 0.9-1 × 10<sup>7</sup> cell/mL using complete medium. Keep at room temperature.</p></dd><dt>8.5.</dt><dd id="ncipr49.lt46"><p class="no_top_margin">Plate 100 µL of cell suspension per well on the 96 well white plate pre-warmed in <a href="#ncipr49.lt42">step 8.1</a>. Prepare 4 wells with 100 µL of PBS for no cells control and another 4 wells with 200 µL of PBS for Luminol only. Refer to <a href="#ncipr49.app">Appendix</a> for an example plate map.
|
||
<blockquote><p><i>Note: This step and <a href="#ncipr49.lt47">steps 8.6</a> and <a href="#ncipr49.lt48">8.7</a> can be done at room temperature (20-22°C). However, when the room temperature is low, keep the plate on a warm gel pack during these steps</i>.</p></blockquote></p></dd><dt>8.6.</dt><dd id="ncipr49.lt47"><p class="no_top_margin">Add 100 µL of Luminol working solution from <a href="#ncipr49.lt37">step 4.7</a> to each well. Please refer to the note in <a href="#ncipr49.lt46">step 8.5</a> for additional details about plate handling conditions.</p></dd><dt>8.7.</dt><dd id="ncipr49.lt48"><p class="no_top_margin">Using multichannel pipette, quickly add 100 µL of opsonized Zymosan A from <a href="#ncipr49.lt33">step 4.3</a> to all wells except blank wells. Please refer to the note in <a href="#ncipr49.lt46">step 8.5</a> for additional details about plate handling conditions.
|
||
<blockquote><p><i>Note: This step can be performed on the bench close to the plate reader to minimize the time between sample addition and initiation of the kinetic reading</i>.</p></blockquote></p></dd><dt>8.8.</dt><dd id="ncipr49.lt49"><p class="no_top_margin">Start kinetic reading on a luminescence plate reader <u>immediately</u>.
|
||
<blockquote><p><i>Note: Plate readers capable of both top and bottom reading may require a plate adaptor for top reads. Check user manuals before proceeding with the plate analysis on the plate reader</i>.</p></blockquote></p></dd></dl></div><div id="ncipr49.s9"><h2 id="_ncipr49_s9_">9. Calculations</h2><dl id="ncipr49.l10" class="temp-labeled-list"><dt>9.1.</dt><dd id="ncipr49.lt50"><p class="no_top_margin">Using Excel or other relevant software, compare area under the curve (AUC) for all samples. An increase in the AUC at least 2-fold above the negative control (baseline) is considered a positive response. Use relevant statistical analysis to compare AUC values for test samples to that of the baseline.</p></dd><dt>9.2.</dt><dd id="ncipr49.lt51"><p class="no_top_margin">A percent coefficient of variation is used to control precision and calculated for each control or test sample according to the following formula:
|
||
<div class="pmc_disp_formula whole_rhythm clearfix" id="ncipr49.deq3"><div class="inline_block pmc_inline_block pmc_va_middle pmc_hide_overflow twelve_col"><math id="ncipr49.eq3" display="block"><mrow><mi>%</mi><mi>C</mi><mi>V</mi><mo>=</mo><mfrac><mrow><mi>s</mi><mi>t</mi><mi>a</mi><mi>n</mi><mi>d</mi><mi>a</mi><mi>r</mi><mi>d</mi><mtext> </mtext><mi>d</mi><mi>e</mi><mi>v</mi><mi>i</mi><mi>a</mi><mi>t</mi><mi>i</mi><mi>o</mi><mi>n</mi></mrow><mrow><mi>m</mi><mi>e</mi><mi>a</mi><mi>n</mi></mrow></mfrac><mo>∗</mo><mn>100</mn><mi>%</mi></mrow></math></div><div class="inline_block pmc_inline_block pmc_va_middle pmc_hide_overflow last bk_equ_label "><div><span class="nowrap"></span></div></div></div></p></dd></dl></div><div id="ncipr49.s10"><h2 id="_ncipr49_s10_">10. Acceptance Criteria</h2><dl id="ncipr49.l11" class="temp-labeled-list"><dt>10.1.</dt><dd id="ncipr49.lt52"><p class="no_top_margin">%CV for each control and test sample should be < 30%.</p></dd><dt>10.2.</dt><dd id="ncipr49.lt53"><p class="no_top_margin">Samples demonstrating higher variability should be re-analyzed.</p></dd></dl></div><div id="ncipr49.rl.r1"><h2 id="_ncipr49_rl_r1_">11. References</h2><dl class="temp-labeled-list"><dt>1.</dt><dd><div class="bk_ref" id="ncipr49.ref1">Antonini
|
||
JM., van Dyke
|
||
K., ye
|
||
Z., DeMatteo
|
||
M., Reasor
|
||
MJ. Introduction of luminol-dependent chemiluminescence as a method to study silica inflammation in the tissue and phagocytic cells of rat lung. Environ. Health Perspect., 1994, 102(suppl10), 37–42. [<a href="/pmc/articles/PMC1566995/" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pmc">PMC free article<span class="bk_prnt">: PMC1566995</span></a>] [<a href="https://pubmed.ncbi.nlm.nih.gov/7705302" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 7705302</span></a>]</div></dd><dt>2.</dt><dd><div class="bk_ref" id="ncipr49.ref2">Gref
|
||
R., Luck
|
||
M., Quellec
|
||
P., et al. Stealth corona-core nanoparticles surface modified by PEG: influences of corona (PEG chain length and surface density) and of the core composition on phagocytic uptake and plasma protein absorption. Colloids and surfaces B: Biointerfaces, 2000, 18: 301–313.
|
||
[<a href="https://pubmed.ncbi.nlm.nih.gov/10915952" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 10915952</span></a>]</div></dd><dt>3.</dt><dd><div class="bk_ref" id="ncipr49.ref3">Leroux
|
||
JC., Gravel
|
||
P., Balant
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L., et al. Internalization of poly(D,L-lactic acid) nanoparticles by isolated human leukocytes and analysis of plasma proteins absorbed onto particles. J.Biomed.Materials Res., 1994, 28:471–481. [<a href="https://pubmed.ncbi.nlm.nih.gov/8006052" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 8006052</span></a>]</div></dd><dt>4.</dt><dd><div class="bk_ref" id="ncipr49.ref4">Mold
|
||
C., Gresham
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HD., DuClos
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TW. Serum Amyloid P component and C-reactive protein mediate phagocytosis through murine FcγRs. J.Immunol., 2001, 166:1200–1205.
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[<a href="https://pubmed.ncbi.nlm.nih.gov/11145702" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 11145702</span></a>]</div></dd><dt>5.</dt><dd><div class="bk_ref" id="ncipr49.ref5">Collins
|
||
SJ, Ruscetti
|
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FW, Gallagher
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RE, Gallo
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||
RC. Terminal differentiation of human promyelocytic leukemia cells induced by dimethyl sulfoxide and other polar compounds. Proc Natl Acad Sci U S A. 1978
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||
May;75(5):2458–62.
|
||
[<a href="/pmc/articles/PMC392573/" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pmc">PMC free article<span class="bk_prnt">: PMC392573</span></a>] [<a href="https://pubmed.ncbi.nlm.nih.gov/276884" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 276884</span></a>]</div></dd><dt>6.</dt><dd><div class="bk_ref" id="ncipr49.ref6">Dobrovolskaia
|
||
MA, McNeil
|
||
SE. Understanding the correlation between in vitro and in vivo immunotoxicity tests for nanomedicines. J Control Release. 2013;172(2):456–66.
|
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[<a href="/pmc/articles/PMC5831149/" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pmc">PMC free article<span class="bk_prnt">: PMC5831149</span></a>] [<a href="https://pubmed.ncbi.nlm.nih.gov/23742883" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 23742883</span></a>]</div></dd></dl></div><div id="ncipr49.s11"><h2 id="_ncipr49_s11_">12. Abbreviations</h2><dl><dt id="ncipr49.abb_DL1_DI1">AUC</dt><dd><p>area under the curve</p></dd><dt id="ncipr49.abb_DL1_DI2">CV</dt><dd><p>coefficient of variation</p></dd><dt id="ncipr49.abb_DL1_DI3">DMSO</dt><dd><p>dimethyl sulfoxide</p></dd><dt id="ncipr49.abb_DL1_DI4">FBS</dt><dd><p>fetal bovine serum</p></dd><dt id="ncipr49.abb_DL1_DI5">PBS</dt><dd><p>phosphate buffered saline</p></dd><dt id="ncipr49.abb_DL1_DI6">RPMI</dt><dd><p>Roswell Park Memorial Institute</p></dd><dt id="ncipr49.abb_DL1_DI7">SD</dt><dd><p>standard deviation</p></dd><dt id="ncipr49.abb_DL1_DI8">VC</dt><dd><p>vehicle control</p></dd></dl></div><div id="ncipr49.app"><h2 id="_ncipr49_app_">13. Appendix</h2><div id="ncipr49.app.fig1" class="figure bk_fig"><div class="graphic"><a href="/core/lw/2.0/html/tileshop_pmc/tileshop_pmc_inline.html?title=Example%20Plate%20Map%2C%20Day%201.&p=BOOKS&id=604902_ncipr49appf1.jpg" target="tileshopwindow" class="inline_block pmc_inline_block ts_canvas img_link" title="Click on image to zoom"><div class="ts_bar small" title="Click on image to zoom"></div><img src="/books/NBK604902/bin/ncipr49appf1.jpg" alt="Example Plate Map, Day 1." class="tileshop" title="Click on image to zoom" /></a></div><h3><span class="title">Example Plate Map, Day 1</span></h3><div class="caption"><p>NC: Negative Control; TS: Test Sample; VC: Vehicle Control</p></div></div><div id="ncipr49.app.fig2" class="figure bk_fig"><div class="graphic"><a href="/core/lw/2.0/html/tileshop_pmc/tileshop_pmc_inline.html?title=Example%20Plate%20Map%2C%20Day%202.&p=BOOKS&id=604902_ncipr49appf2.jpg" target="tileshopwindow" class="inline_block pmc_inline_block ts_canvas img_link" title="Click on image to zoom"><div class="ts_bar small" title="Click on image to zoom"></div><img src="/books/NBK604902/bin/ncipr49appf2.jpg" alt="Example Plate Map, Day 2." class="tileshop" title="Click on image to zoom" /></a></div><h3><span class="title">Example Plate Map, Day 2</span></h3><div class="caption"><p>PC: Positive Control; NC: Negative Control; TS: Test Sample; VC: Vehicle Control</p><p><span class="graphic"><img src="/books/NBK604902/bin/ncipr49appif1.jpg" alt="rows A-D" /></span> These wells receive both Luminol and Zymosan A (rows A-D)</p><p><span class="graphic"><img src="/books/NBK604902/bin/ncipr49appif2.jpg" alt="rows G and H" /></span> These wells receive Luminol only; PBS is used instead of Zymosan A to adjust the volume (rows G and H)</p></div></div></div><div><dl class="temp-labeled-list small"><dt></dt><dd><div><p class="no_top_margin"><p>This protocol assumes an intermediate level of scientific competency with regard to techniques, instrumentation, and safety procedures. Rudimentary assay details have been omitted for the sake of brevity.</p></p></div></dd><dt>*</dt><dd><div id="ncipr49.fn1"><p class="no_top_margin">address correspondence to: <a href="mailto:dev@null" data-email="vog.hin.liam@aniram" class="oemail">vog.hin.liam@aniram</a></p></div></dd><dt></dt><dd><div><p class="no_top_margin"><div>
|
||
<span class="mixed-citation" id="ncipr49.suggestedcitation">Potter TM, Cedrone E, Neun BW, Dobrovolskaia MA, NCL Method ITA-9.2: In Vitro Assay for Assessing Nanoparticle Effects on Monocyte/Macrophage Phagocytic Function. <a href="https://ncl.cancer.gov/rresources/assay-cascade-protocols" ref="pagearea=body&targetsite=external&targetcat=link&targettype=uri">https://ncl.cancer.gov/rresources/assay-cascade-protocols</a> DOI: <a href="http://dx.crossref.org/10.17917/WZGC-DG48" ref="pagearea=body&targetsite=external&targetcat=link&targettype=uri">10.17917/WZGC-DG48</a></span>
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</div></p></div></dd></dl></div><div id="bk_toc_contnr"></div></div></div>
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<div class="post-content"><div><div class="half_rhythm"><a href="/books/about/copyright/">Copyright Notice</a></div><div class="small"><span class="label">Bookshelf ID: NBK604902</span><span class="label">PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/39013001" title="PubMed record of this page" ref="pagearea=meta&targetsite=entrez&targetcat=link&targettype=pubmed">39013001</a></span>DOI: <a href="http://dx.crossref.org/10.17917/WZGC-DG48" ref="pagearea=body&targetsite=external&targetcat=link&targettype=uri">10.17917/WZGC-DG48</a></div><div style="margin-top:2em" class="bk_noprnt"><a class="bk_cntns" href="/books/n/nciprotocols/">Contents</a><div class="pagination bk_noprnt"><a class="active page_link prev" href="/books/n/nciprotocols/ncipr54/" title="Previous page in this title">< Prev</a><a class="active page_link next" href="/books/n/nciprotocols/ncipr48/" title="Next page in this title">Next ></a></div></div></div></div>
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<div xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"></div><div class="portlet"><div class="portlet_head"><div class="portlet_title"><h3><span>Views</span></h3></div><a name="Shutter" sid="1" href="#" class="portlet_shutter" title="Show/hide content" remembercollapsed="true" pgsec_name="PDF_download" id="Shutter"></a></div><div class="portlet_content"><ul xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="simple-list"><li><a href="/books/NBK604902/?report=reader">PubReader</a></li><li><a href="/books/NBK604902/?report=printable">Print View</a></li><li><a data-jig="ncbidialog" href="#_ncbi_dlg_citbx_NBK604902" data-jigconfig="width:400,modal:true">Cite this Page</a><div id="_ncbi_dlg_citbx_NBK604902" style="display:none" title="Cite this Page"><div class="bk_tt">Potter TM, Cedrone E, Neun BW, et al. In Vitro Assay for Assessing Nanoparticle Effects on Monocyte/Macrophage Phagocytic Function: Version 1. 2020 May. In: National Cancer Institute’s Nanotechnology Characterization Laboratory Assay Cascade Protocols [Internet]. Bethesda (MD): National Cancer Institute (US); 2005 May 1-. NCL Method ITA-9.2.<span class="bk_cite_avail"></span> doi: 10.17917/WZGC-DG48</div></div></li><li><a href="/books/NBK604902/pdf/Bookshelf_NBK604902.pdf">PDF version of this page</a> (431K)</li></ul></div></div><div class="portlet"><div class="portlet_head"><div class="portlet_title"><h3><span>In this Page</span></h3></div><a name="Shutter" sid="1" href="#" class="portlet_shutter" title="Show/hide content" remembercollapsed="true" pgsec_name="page-toc" id="Shutter"></a></div><div class="portlet_content"><ul xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="simple-list"><li><a href="#ncipr49.s1" ref="log$=inpage&link_id=inpage">Introduction</a></li><li><a href="#ncipr49.s2" ref="log$=inpage&link_id=inpage">Principles and Limitation</a></li><li><a href="#ncipr49.s3" ref="log$=inpage&link_id=inpage">Reagents, Materials, Cell Lines, and Equipment</a></li><li><a href="#ncipr49.s4" ref="log$=inpage&link_id=inpage">Reagent and Control Preparation</a></li><li><a href="#ncipr49.s5" ref="log$=inpage&link_id=inpage">Preparation of Study Samples</a></li><li><a href="#ncipr49.s6" ref="log$=inpage&link_id=inpage">Cell Preparation</a></li><li><a href="#ncipr49.s7" ref="log$=inpage&link_id=inpage">Experimental Procedure, Day 1</a></li><li><a href="#ncipr49.s8" ref="log$=inpage&link_id=inpage">Experimental Procedure, Day 2</a></li><li><a href="#ncipr49.s9" ref="log$=inpage&link_id=inpage">Calculations</a></li><li><a href="#ncipr49.s10" ref="log$=inpage&link_id=inpage">Acceptance Criteria</a></li><li><a href="#ncipr49.rl.r1" ref="log$=inpage&link_id=inpage">References</a></li><li><a href="#ncipr49.s11" ref="log$=inpage&link_id=inpage">Abbreviations</a></li><li><a href="#ncipr49.app" ref="log$=inpage&link_id=inpage">Appendix</a></li></ul></div></div><div class="portlet"><div class="portlet_head"><div class="portlet_title"><h3><span>Related information</span></h3></div><a name="Shutter" sid="1" href="#" class="portlet_shutter" title="Show/hide content" remembercollapsed="true" pgsec_name="discovery_db_links" id="Shutter"></a></div><div class="portlet_content"><ul><li class="brieflinkpopper"><a class="brieflinkpopperctrl" href="/books/?Db=pmc&DbFrom=books&Cmd=Link&LinkName=books_pmc_refs&IdsFromResult=5641448" ref="log$=recordlinks">PMC</a><div class="brieflinkpop offscreen_noflow">PubMed Central citations</div></li><li class="brieflinkpopper"><a class="brieflinkpopperctrl" href="/books/?Db=pubmed&DbFrom=books&Cmd=Link&LinkName=books_pubmed_refs&IdsFromResult=5641448" ref="log$=recordlinks">PubMed</a><div class="brieflinkpop offscreen_noflow">Links to PubMed</div></li></ul></div></div><div class="portlet"><div class="portlet_head"><div class="portlet_title"><h3><span>Similar articles in PubMed</span></h3></div><a name="Shutter" sid="1" href="#" class="portlet_shutter" title="Show/hide content" remembercollapsed="true" pgsec_name="PBooksDiscovery_RA" id="Shutter"></a></div><div class="portlet_content"><ul><li class="brieflinkpopper two_line"><a class="brieflinkpopperctrl" href="/pubmed/39012998" ref="ordinalpos=1&linkpos=1&log$=relatedreviews&logdbfrom=pubmed"><span xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="invert">Review</span> Phagocytosis Assay: Version 1.2.</a><span class="source">[National Cancer Institute’s Na...]</span><div class="brieflinkpop offscreen_noflow"><span xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="invert">Review</span> Phagocytosis Assay: Version 1.2.<div class="brieflinkpopdesc"><em xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="author">Potter TM, Cedron E, Neun BW, Dobrovolskaia MA. </em><em xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="cit">National Cancer Institute’s Nanotechnology Characterization Laboratory Assay Cascade Protocols. 2005 May 1</em></div></div></li><li class="brieflinkpopper two_line"><a class="brieflinkpopperctrl" href="/pubmed/16879260" ref="ordinalpos=1&linkpos=2&log$=relatedarticles&logdbfrom=pubmed">Phagocytic efficacy of macrophage-like cells as a function of cell cycle and Fcgamma receptors (FcgammaR) and complement receptor (CR)3 expression.</a><span class="source">[Clin Exp Immunol. 2006]</span><div class="brieflinkpop offscreen_noflow">Phagocytic efficacy of macrophage-like cells as a function of cell cycle and Fcgamma receptors (FcgammaR) and complement receptor (CR)3 expression.<div class="brieflinkpopdesc"><em xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="author">Luo Y, Cook E, Fries BC, Casadevall A. </em><em xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="cit">Clin Exp Immunol. 2006 Aug; 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176(6):1673-80. </em></div></div></li><li class="brieflinkpopper two_line"><a class="brieflinkpopperctrl" href="/pubmed/33995386" ref="ordinalpos=1&linkpos=5&log$=relatedreviews&logdbfrom=pubmed"><span xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="invert">Review</span> Microbial Phagocytic Receptors and Their Potential Involvement in Cytokine Induction in Macrophages.</a><span class="source">[Front Immunol. 2021]</span><div class="brieflinkpop offscreen_noflow"><span xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="invert">Review</span> Microbial Phagocytic Receptors and Their Potential Involvement in Cytokine Induction in Macrophages.<div class="brieflinkpopdesc"><em xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="author">Fu YL, Harrison RE. </em><em xmlns:np="http://ncbi.gov/portal/XSLT/namespace" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="cit">Front Immunol. 2021; 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