669 lines
34 KiB
Text
669 lines
34 KiB
Text
|
||
<!DOCTYPE html>
|
||
<html lang="en" dir="ltr">
|
||
<head>
|
||
<meta charset="utf-8" />
|
||
<meta name="description" content="A new study in rats shows that stem cell secretions, called exosomes, appear to protect cells in the retina, the light-sensitive tissue in the back of the eye." />
|
||
<meta name="keywords" content="Glaucoma,Stem Cells,Retina,Regenerative Medicine" />
|
||
<meta name="google" content="vityevxlt8UuVFWvgz9_YwmJ5F0Nby_B3t54LLh-3Zw,lACaj571Gx_VdLF3HKSKUf1Wxx0H_bWxO3BYDZ_C1uw" />
|
||
<meta name="google-site-verification" content="vityevxlt8UuVFWvgz9_YwmJ5F0Nby_B3t54LLh-3Zw" />
|
||
<meta name="google-site-verification" content="lACaj571Gx_VdLF3HKSKUf1Wxx0H_bWxO3BYDZ_C1uw" />
|
||
<meta name="google-site-verification" content="UDfyeEAWNX_rJUHwog9j1kziEnByGwhkSJGLJclUWDA" />
|
||
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
|
||
<script type="application/ld+json">{
|
||
"@context": "https://schema.org",
|
||
"@graph": [
|
||
{
|
||
"@type": "NewsArticle",
|
||
"@id": "https://www.nei.nih.gov/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma",
|
||
"name": "Stem cell secretions may protect against glaucoma",
|
||
"headline": "Stem cell secretions may protect against glaucoma",
|
||
"image": {
|
||
"@type": "ImageObject",
|
||
"representativeOfPage": "False",
|
||
"url": "https://www.nei.nih.gov/sites/default/files/styles/medium/public/news/Mead%20photo%204.jpg?itok=ufZ-G7FU",
|
||
"width": "671",
|
||
"height": "558"
|
||
},
|
||
"datePublished": "2017-01-26T16:15:58-0500",
|
||
"dateModified": "2025-01-28T09:41:14-0500",
|
||
"author": {
|
||
"@type": "GovernmentOrganization",
|
||
"@id": "https://www.nei.nih.gov/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma",
|
||
"name": "National Eye Institute",
|
||
"url": "https://www.nei.nih.gov"
|
||
},
|
||
"publisher": {
|
||
"@type": "GovernmentOrganization",
|
||
"@id": "https://www.nei.nih.gov/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma",
|
||
"name": "National Eye Institute",
|
||
"url": "https://www.nei.nih.gov"
|
||
}
|
||
},
|
||
{
|
||
"@type": "WebPage",
|
||
"@id": "https://www.nei.nih.gov/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma",
|
||
"breadcrumb": {
|
||
"@type": "BreadcrumbList",
|
||
"itemListElement": [
|
||
{
|
||
"@type": "ListItem",
|
||
"position": 1,
|
||
"name": "Home",
|
||
"item": "https://www.nei.nih.gov/"
|
||
},
|
||
{
|
||
"@type": "ListItem",
|
||
"position": 2,
|
||
"name": "About NEI",
|
||
"item": "https://www.nei.nih.gov/about"
|
||
},
|
||
{
|
||
"@type": "ListItem",
|
||
"position": 3,
|
||
"name": "News and Events",
|
||
"item": "https://www.nei.nih.gov/about/news-and-events"
|
||
},
|
||
{
|
||
"@type": "ListItem",
|
||
"position": 4,
|
||
"name": "NEI Research News",
|
||
"item": "https://www.nei.nih.gov/about/news-and-events/news"
|
||
},
|
||
{
|
||
"@type": "ListItem",
|
||
"position": 5,
|
||
"name": "Stem cell secretions may protect against glaucoma ",
|
||
"item": "https://www.nei.nih.gov/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma"
|
||
}
|
||
]
|
||
},
|
||
"author": {
|
||
"@type": "GovernmentOrganization",
|
||
"@id": "https://www.nei.nih.gov",
|
||
"name": "National Eye Institute",
|
||
"url": "https://www.nei.nih.gov"
|
||
},
|
||
"publisher": {
|
||
"@type": "GovernmentOrganization",
|
||
"@id": "https://www.nei.nih.gov",
|
||
"name": "National Eye Institute",
|
||
"url": "https://www.nei.nih.gov"
|
||
}
|
||
}
|
||
]
|
||
}</script>
|
||
<link rel="icon" type="image/png" href="/themes/custom/nei/images/favicon.png" />
|
||
<link rel="apple-touch-icon" href="/themes/custom/nei/images/apple-touch-icon.png" />
|
||
<meta name="last-updated" content="Jan 28, 2025, 9:41:14 AM" />
|
||
<link rel="icon" href="/themes/custom/nei/favicon.ico" type="image/vnd.microsoft.icon" />
|
||
<link rel="alternate" hreflang="en" href="https://www.nei.nih.gov/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma" />
|
||
<link rel="canonical" href="https://www.nei.nih.gov/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma" />
|
||
<link rel="shortlink" href="https://www.nei.nih.gov/node/1965" />
|
||
|
||
<title>Stem cell secretions may protect against glaucoma | National Eye Institute</title>
|
||
<link rel="preload" href="/themes/custom/nei/fonts/Aleo-Bold.woff2" as="font" type="font/woff2" crossorigin>
|
||
<link rel="preload" href="/themes/custom/nei/fonts/Lato-Regular.woff2" as="font" type="font/woff2" crossorigin>
|
||
<link rel="stylesheet" media="all" href="/sites/default/files/css/css_PGSk_7b88hq2qr_--_38MLvoj1ffr9jv3JhnNJTnKUM.css?delta=0&language=en&theme=nei&include=eJw1ytEKgCAMRuEXsnwk-dMxrOliTqi3j4iuDnycfFCprpbyHK4tDb-FRvwSshrFYvOErNhxBUHnCaYEcbJ_61Qji26Q5ZXa-QH_YCJ9" />
|
||
<link rel="stylesheet" media="all" href="/themes/custom/nei/css/style.css?sraguf" />
|
||
|
||
<script type="application/json" data-drupal-selector="drupal-settings-json">{"path":{"baseUrl":"\/","pathPrefix":"","currentPath":"node\/1965","currentPathIsAdmin":false,"isFront":false,"currentLanguage":"en"},"pluralDelimiter":"\u0003","gtag":{"tagId":"","consentMode":false,"otherIds":[],"events":[],"additionalConfigInfo":[]},"suppressDeprecationErrors":true,"ajaxPageState":{"libraries":"eJxdjFsOwjAMBC8U6iNFbmKZgPNQ7BTK6SmgCsrPrndkTbhSTFa7D0OtZq-2Cil8yoWOj5WYYT8c18pC3pCBt_jfE17wfoTZCRYeyORRjPruLmhpIS-b2EvFmArD73CFErDUGeWkoadmekCb5fXVsCN3bGeF2EdDmb5kGqWNWZKeKTpd1SjDjEpuSXRTeOeUaxxCT9WYZ50","theme":"nei","theme_token":null},"ajaxTrustedUrl":{"form_action_p_pvdeGsVG5zNF_XLGPTvYSKCf43t8qZYSwcfZl2uzM":true},"gtm":{"tagId":null,"settings":{"data_layer":"dataLayer","include_classes":false,"allowlist_classes":"google\nnonGooglePixels\nnonGoogleScripts\nnonGoogleIframes","blocklist_classes":"customScripts\ncustomPixels","include_environment":false,"environment_id":"","environment_token":""},"tagIds":["GTM-TLVNS7W"]},"user":{"uid":0,"permissionsHash":"c48594e108b5c1c2bea409821b71477d5bc2724c8cae6d31f1d985af0daab85c"}}</script>
|
||
<script src="/sites/default/files/js/js_WgzMsgqb-MiW-Z2aLffGQHepZwX2hWrEHSrb46WqZrk.js?scope=header&delta=0&language=en&theme=nei&include=eJxdjEEOgCAMBD-E9kmkYrOpqdQAMerr5eBBvUx29jCp8HUKQOkZAe4wiY1B6Pj7yAsf33MNmZvuEq0nojnPmkFvCVmUYD6xDTUV3Vq9ATUbLxk"></script>
|
||
<script src="https://script.crazyegg.com/pages/scripts/0117/6571.js" async></script>
|
||
<script src="/modules/contrib/google_tag/js/gtag.js?sraguf"></script>
|
||
<script src="/modules/contrib/google_tag/js/gtm.js?sraguf"></script>
|
||
|
||
</head>
|
||
<body class="t-news_item t-node__1965 path-about-news-and-events-news-stem-cell-secretions-may-protect-against-glaucoma">
|
||
<a href="#main-content" class="u-skip-link">
|
||
Skip to content
|
||
</a>
|
||
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-TLVNS7W"
|
||
height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
|
||
|
||
<div class="dialog-off-canvas-main-canvas" data-off-canvas-main-canvas>
|
||
|
||
<div id="u-page-outer" class="u-outer">
|
||
<div class="views-element-container site-notice-block" id="block-views-block-site-notices-block-1">
|
||
|
||
|
||
|
||
|
||
|
||
<div>
|
||
<div class="js-view-dom-id-bca3892fe522a94248c74087cbf8646ffbc018befc8d0e64978ba8c06dc01631 site-notices">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
</div>
|
||
|
||
|
||
<img src="/themes/custom/nei/images/NEI-logo-tagline.svg" alt="" width="200" height="48" class="u-print-only">
|
||
<div class="r-global-header">
|
||
<div id="r-header-outer" class="r-header">
|
||
|
||
<div class="r-header-inner">
|
||
|
||
<div id="block-nei-branding" class="o-block--logo" role="banner">
|
||
|
||
|
||
|
||
|
||
|
||
<div class="o-logo">
|
||
<a href="/" class="o-logo__link" title="Home" rel="home"><span class="o-logo__text">National Eye Institute</span> <span class="o-logo__tagline">Research Today… Vision Tomorrow</span></a>
|
||
</div>
|
||
|
||
|
||
</div>
|
||
|
||
<div id="block-neimenubutton-2">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<div class="o-menu-toggle"><button class="o-menu-toggle__btn" id="menu-toggle__btn" aria-controls="block-mainnavigation" aria-expanded="true">Menu</button></div>
|
||
|
||
|
||
|
||
|
||
</div>
|
||
<div class="language-switcher-language-url has-no-translation" id="block-languageswitcher" role="navigation" aria-label="Language switcher">
|
||
|
||
|
||
<ul class="links">
|
||
<li class="is-active">
|
||
<a href="/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma" class="language-link is-active" lang="en" data-drupal-link-system-path="node/1965" aria-current="page">English</a>
|
||
</li>
|
||
<li>
|
||
<a href="/espanol/node/1965" class="language-link is-active" lang="es" data-drupal-link-system-path="node/1965" aria-current="page"> Español</a>
|
||
</li>
|
||
</ul>
|
||
|
||
|
||
</div>
|
||
<div class="search-global c-search--global" data-drupal-selector="search-global" id="block-globalsearchform" role="search">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<form action="/about/news-and-events/news/stem-cell-secretions-may-protect-against-glaucoma" method="post" id="search-global" accept-charset="UTF-8">
|
||
<div class="c-form__inner">
|
||
<div class="js-form-item form-item js-form-type-textfield form-item-global-terms js-form-item-global-terms">
|
||
<label for="edit-global-terms">Search the site</label>
|
||
<input data-drupal-selector="edit-global-terms" type="text" id="edit-global-terms" name="global-terms" value="" size="30" maxlength="128" placeholder="Search the site" class="form-text" />
|
||
|
||
</div>
|
||
<input data-drupal-selector="form-sduxwbtfv5fpzj0uesa5es-0fvoaoesuwzyhjjghldk" type="hidden" name="form_build_id" value="form-sdUxWbTFv5Fpzj0uEsA5ES-0FvoaoesuWZYhjJgHlDk" />
|
||
<input data-drupal-selector="edit-search-global" type="hidden" name="form_id" value="search_global" />
|
||
<div data-drupal-selector="edit-global-actions" class="form-actions js-form-wrapper form-wrapper" id="edit-global-actions"><input data-drupal-selector="edit-global-submit" type="submit" id="edit-global-submit" name="op" value="Search" class="button js-form-submit form-submit" />
|
||
</div>
|
||
|
||
</div>
|
||
</form>
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
||
</div>
|
||
|
||
</div>
|
||
|
||
<div class="r-menu-primary">
|
||
<nav aria-label="Main navigation" id="block-mainnavigation" class="o-menu-main__outer">
|
||
|
||
<ul class="o-menu o-menu-main"> <li class="o-menu-main__item o-menu-main__item--expanded o-menu-main__item--no-js"> <a href="/learn-about-eye-health" class="o-menu-main__link" data-drupal-link-system-path="node/39">Learn About Eye Health</a>
|
||
<ul class="o-menu o-menu-main__submenu"> <li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/learn-about-eye-health/healthy-vision" class="o-menu-main__link" data-drupal-link-system-path="node/788">Healthy Vision</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/learn-about-eye-health/eye-conditions-and-diseases" class="o-menu-main__link" data-drupal-link-system-path="learn-about-eye-health/eye-conditions-and-diseases">Eye Conditions and Diseases</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/learn-about-eye-health/eye-health-data-and-statistics" class="o-menu-main__link" data-drupal-link-system-path="node/825">Eye Health Data and Statistics</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/learn-about-eye-health/campaigns" class="o-menu-main__link" data-drupal-link-system-path="node/3859">Campaigns</a>
|
||
</li>
|
||
<li class="o-menu-main__item"> <a href="/learn-about-eye-health/vision-rehabilitation" class="o-menu-main__link" data-drupal-link-system-path="node/3865">Vision Rehabilitation</a>
|
||
</li>
|
||
<li class="o-menu-main__item"> <a href="/learn-about-eye-health/nei-for-kids" class="o-menu-main__link" data-drupal-link-system-path="node/162">NEI for Kids</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/learn-about-eye-health/outreach-resources" class="o-menu-main__link" data-drupal-link-system-path="node/125">Outreach Resources</a>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--expanded o-menu-main__item--no-js"> <a href="/grants-and-training" class="o-menu-main__link" data-drupal-link-system-path="node/143">Grants and Training</a>
|
||
<ul class="o-menu-main__submenu o-menu"> <li class="o-menu-main__item"> <a href="/grants-and-training/how-apply" class="o-menu-main__link" data-drupal-link-system-path="node/145">How to Apply</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/grants-and-training/funding-opportunities" class="o-menu-main__link" data-drupal-link-system-path="node/144">Funding Opportunities</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/grants-and-training/training-nei" class="o-menu-main__link" data-drupal-link-system-path="node/146">Training at NEI</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/grants-and-training/funding-training-and-career-development" class="o-menu-main__link" data-drupal-link-system-path="node/152">Funding for Training and Career Development</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/grants-and-training/policies-and-procedures" class="o-menu-main__link" data-drupal-link-system-path="node/149">Policies and Procedures</a>
|
||
</li>
|
||
<li class="o-menu-main__item"> <a href="/grants-and-training/Prior-Approval-Requests" class="o-menu-main__link" data-drupal-link-system-path="node/3918">Prior Approval Requests</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/grants-and-training/resources-researchers" class="o-menu-main__link" data-drupal-link-system-path="node/150">Resources for Researchers</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/grants-and-training/contact-grants-and-funding-staff" class="o-menu-main__link" data-drupal-link-system-path="node/151">Contact Grants and Funding Staff</a>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--expanded o-menu-main__item--no-js"> <a href="/research" class="o-menu-main__link" data-drupal-link-system-path="node/41">Research at NEI</a>
|
||
<ul class="o-menu-main__submenu o-menu"> <li class="o-menu-main__item"> <a href="/about/news-and-events/news" title="Research News" class="o-menu-main__link" data-drupal-link-system-path="about/news-and-events/news">Research News</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/research/clinical-trials" class="o-menu-main__link" data-drupal-link-system-path="node/132">Clinical Trials</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/research/research-labs-and-branches" class="o-menu-main__link" data-drupal-link-system-path="node/270">Research Labs and Branches</a>
|
||
</li>
|
||
<li class="o-menu-main__item"> <a href="/research/jobs-and-training-opportunities-nei" class="o-menu-main__link" data-drupal-link-system-path="node/564">Jobs and Training Opportunities at NEI</a>
|
||
</li>
|
||
<li class="o-menu-main__item"> <a href="/research/seminars" class="o-menu-main__link" data-drupal-link-system-path="node/4048">NEI Research Seminars</a>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--expanded o-menu-main__item--no-js"> <a href="/about" class="o-menu-main__link" data-drupal-link-system-path="node/275">About NEI</a>
|
||
<ul class="o-menu-main__submenu o-menu"> <li class="o-menu-main__item"> <a href="/about/strategic-planning" class="o-menu-main__link" data-drupal-link-system-path="node/2857">Strategic Planning</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/about/news-and-events" class="o-menu-main__link" data-drupal-link-system-path="node/131">News and Events</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/about/goals-and-accomplishments" class="o-menu-main__link" data-drupal-link-system-path="node/281">Goals and Accomplishments</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/about/nei-history" class="o-menu-main__link" data-drupal-link-system-path="node/282">NEI History</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/about/nei-leadership" class="o-menu-main__link" data-drupal-link-system-path="node/415">NEI Leadership</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/about/budget-and-congress" class="o-menu-main__link" data-drupal-link-system-path="node/395">Budget and Congress</a>
|
||
</li>
|
||
<li class="o-menu-main__item o-menu-main__item--collapsed"> <a href="/about/advisory-committees" class="o-menu-main__link" data-drupal-link-system-path="node/285">Advisory Committees</a>
|
||
</li>
|
||
<li class="o-menu-main__item"> <a href="/learn-about-eye-health/outreach-resources/national-eye-health-education-program" title="National Eye Health Education Program" class="o-menu-main__link" data-drupal-link-system-path="node/265">National Eye Health Education Program</a>
|
||
</li>
|
||
<li class="o-menu-main__item"> <a href="/about/donate-nei" class="o-menu-main__link" data-drupal-link-system-path="node/286">Donate to NEI</a>
|
||
</li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
|
||
|
||
</nav>
|
||
|
||
|
||
</div>
|
||
</div>
|
||
|
||
<div class="o-overlay" aria-hidden="true"></div>
|
||
|
||
<div class="r-breadcrumb">
|
||
|
||
<div id="block-nei-breadcrumbs">
|
||
|
||
|
||
|
||
|
||
|
||
<nav aria-label="Breadcrumb">
|
||
<ol class="c-breadcrumb">
|
||
<li>
|
||
<a href="/">Home</a>
|
||
</li>
|
||
<li>
|
||
<a href="/about">About NEI</a>
|
||
</li>
|
||
<li>
|
||
<a href="/about/news-and-events">News and Events</a>
|
||
</li>
|
||
<li>
|
||
<a href="/about/news-and-events/news">NEI Research News</a>
|
||
</li>
|
||
<li>
|
||
Stem cell secretions may protect against glaucoma
|
||
</li>
|
||
</ol>
|
||
</nav>
|
||
|
||
|
||
|
||
</div>
|
||
|
||
|
||
</div>
|
||
|
||
|
||
|
||
<div class="r-page-header">
|
||
<div class="o-page-header">
|
||
|
||
<div id="block-nei-page-title">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<h1>
|
||
<span>Stem cell secretions may protect against glaucoma </span>
|
||
</h1>
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
||
|
||
|
||
|
||
</div>
|
||
</div>
|
||
|
||
<div class="r-highlighted">
|
||
<div data-drupal-messages-fallback class="hidden"></div>
|
||
|
||
|
||
</div>
|
||
|
||
<div class="r-help">
|
||
|
||
</div>
|
||
<main id="main-content" class="r-main">
|
||
<div class="r-pre-content">
|
||
|
||
</div>
|
||
|
||
<div class="r-splitter">
|
||
<div class="r-content">
|
||
|
||
<div id="block-nei-content">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<article data-history-node-id="1965">
|
||
|
||
|
||
|
||
<div>
|
||
|
||
|
||
|
||
|
||
<div class="c-item__subtitle">
|
||
NEI scientists find that stem cell exosomes promote survival of retinal ganglion cells in rats
|
||
</div>
|
||
|
||
|
||
<div class="c-item__date">
|
||
January 26, 2017
|
||
</div>
|
||
|
||
|
||
|
||
|
||
<div class="c-item__tag c-item__tag--topic">
|
||
<a href="/about/news-and-events/news?topic=12" hreflang="en">Glaucoma</a>
|
||
<a href="/about/news-and-events/news?topic=364" hreflang="en">Regenerative Medicine</a>
|
||
<a href="/about/news-and-events/news?topic=7" hreflang="en">Retina</a>
|
||
<a href="/about/news-and-events/news?topic=41" hreflang="en">Stem Cells</a>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
<div class="c-item__tag c-item__tag--research-type">
|
||
<a href="/about/news-and-events/news?research=25" hreflang="en">Basic Research</a>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
<div class="c-item__tag c-item__tag--source">
|
||
<a href="/about/news-and-events/news?source=123" hreflang="en">NEI</a>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
<div class="c-item__tag c-item__tag--topic">
|
||
<a href="/about/news-and-events/news?initiatives=206" hreflang="en">Lab of Retinal Cell and Molecular Biology</a>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
<div class="o-news__content">
|
||
|
||
<div class="c-image c-image--has-caption c-image--left">
|
||
<div class="c-image__src">
|
||
<img src="https://www.nei.nih.gov/sites/default/files/styles/small/public/news/Mead%20photo%204.jpg?itok=yynLVgAB" alt="Photo shows microscopy image of exosomes in green surrounding retinal ganglion cells in yellow and orange." width="671" height="558">
|
||
</div>
|
||
<div class="c-image__caption">
|
||
|
||
|
||
|
||
|
||
<p>Microscopy image shows exosomes (green) and retinal ganglion cells (yellow and orange).</p>
|
||
|
||
|
||
</div>
|
||
</div>
|
||
|
||
<div class="c-text">
|
||
|
||
|
||
|
||
|
||
<p>A new study in rats shows that stem cell secretions, called exosomes, appear to protect cells in the retina, the light-sensitive tissue in the back of the eye. The findings, published in Stem Cells Translational Medicine, point to potential therapies for glaucoma, a leading cause of blindness in the United States. The study was conducted by researchers at the National Eye Institute (NEI), part of the National Institutes of Health.</p><p>Exosomes are tiny membrane-enclosed packages that form inside of cells before getting expelled. Long thought of as part of a cellular disposal system, scientists have more recently discovered that exosomes are packed with proteins, lipids and gene-regulating RNA. Studies have shown that exosomes from one cell can be taken up by another by fusing with the target cell’s membrane, spurring it to make new proteins. Exosomes also facilitate cell-to-cell interactions and play a signaling role, prompting research into their potential therapeutic effect.</p><p>In his study, Ben Mead, Ph.D., a post-doctoral fellow at NEI, investigated the role of stem cell exosomes on retinal ganglion cells, a type of retinal cell that forms the optic nerve that carries visual information from the eye to the brain. The death of retinal ganglion cells leads to vision loss in glaucoma and other optic neuropathies.</p><p>Stem cells have been the focus of therapeutic attempts to replace or repair tissues because of their ability to morph into any type of cell in the body. However, from a practical standpoint, using exosomes isolated from stem cells presents some key advantages over transplanting whole stem cells.</p><p>“Exosomes can be purified, stored and precisely dosed in ways that stem cells cannot,” Mead said.</p><p>Another important advantage of exosomes is they lack the risks associated with transplanting live stem cells into the eye, which can potentially lead to complications such as immune rejection and unwanted cell growth.</p><p>In a rat glaucoma model, Mead studied the effects of exosomes isolated from bone marrow stem cells on retinal ganglion cells. Exosomes were injected weekly into the rats’ vitreous, the fluid within the center of the eye. Prior to injection, the exosomes were fluorescently labelled allowing the researchers to track the delivery of the exosome cargo into the retinal ganglion cells. Exosome-treated rats lost about a third of their retinal ganglion cells following optic nerve injury, compared with a 90-percent loss among untreated rats. Stem cell exosome-treated retinal ganglion cells also maintained function, according to electroretinography, which measures electrical activity of retinal cells.</p><p>The researchers determined that the protective effects of exosomes are mediated by microRNA, molecules that interfere with or silence gene expression. Further research is needed to understand more about the specific contents of the exosomes, said Stanislav Tomarev, Ph.D., a principal investigator at NEI and the study’s coauthor.</p><p>“We need to know which particular microRNA – there are more than 2000 different microRNA molecules – are delivered into the retinal ganglion cells and what proteins or signaling pathways are being targeted upon arrival,” said Tomarev. “We also need to attempt to target exosomes to specific sets of neurons and other cell types or groups of cells.”</p><p>Finally, the most optimal exosome approach needs to be identified, Tomarev added. It may be that the best approach would be to combine exosomes with additional therapies. From a treatment feasibility standpoint, a lot will depend on how frequently exosomes need to be administered to achieve a therapeutic effect.</p><p>This work was supported by the Intramural Research Programs of the National Eye Institute.</p><p><em>###</em></p><p><em>NEI leads the federal government's research on the visual system and eye diseases. NEI supports basic and clinical science programs that result in the development of sight-saving treatments and address special needs of people with vision loss. For more information, visit </em><a href="/"><em>www.nei.nih.gov</em></a><em>.</em></p><p><em>About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit </em><a href="http://www.nih.gov"><em>www.nih.gov</em></a><em>.</em></p><p> </p><p><em>NIH…Turning Discovery Into Health®</em></p>
|
||
|
||
|
||
</div>
|
||
|
||
<div class="c-text">
|
||
|
||
|
||
|
||
|
||
<p><strong>Reference:</strong> Mead, B. and Tomarev, S. (2017), Bone Marrow-Derived Mesenchymal Stem Cells-Derived Exosomes Promote Survival of Retinal Ganglion Cells Through miRNA-Dependent Mechanisms. STEM CELLS Translational Medicine. <a href="https://stemcellsjournals.onlinelibrary.wiley.com/doi/full/10.1002/sctm.16-0428">doi:10.1002/sctm.12056</a> <a href="https://pubmed.ncbi.nlm.nih.gov/28198592">Pubmed</a></p>
|
||
|
||
|
||
</div>
|
||
|
||
|
||
|
||
<div class="c-contact">
|
||
<h2 class="c-contact__heading">Contact</h2>
|
||
<div class="c-contact__label c-contact__name"><strong>Kathryn DeMott or Joe Balintfy</strong></div>
|
||
<div class="c-contact__label c-contact__email">
|
||
<a href="mailto:neinews@nei.nih.gov">Email</a>
|
||
</div>
|
||
<div class="c-contact__label c-contact__phone">301-496-5248</div>
|
||
</div>
|
||
|
||
</div>
|
||
|
||
|
||
</div>
|
||
|
||
</article>
|
||
|
||
|
||
|
||
</div>
|
||
|
||
|
||
</div>
|
||
<aside class="r-sidebar" role="complementary">
|
||
|
||
<div class="views-element-container" id="block-views-block-nei-sidebar-block-1">
|
||
|
||
|
||
|
||
|
||
|
||
<div>
|
||
<div class="js-view-dom-id-b43a21b254fea9f05f1196474ceb843e2c70abd711bfeb3a96d792fb2095ea66 nei-sidebar">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
</div>
|
||
|
||
|
||
</aside>
|
||
</div>
|
||
</main>
|
||
|
||
<div class="r-footer">
|
||
<footer class="o-footer" role="contentinfo">
|
||
|
||
<div id="block-footer-2">
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<div class="o-footer__row">
|
||
<div class="o-footer__group o-footer__group--logo"><a class="o-logo__link" href="/" rel="home" title="Home"><span class="o-logo__text">National Eye Institute</span></a>
|
||
<ul class="o-menu-social">
|
||
<li class="o-menu-social__item"><a class="o-menu-social__link o-menu-social__link--facebook outlink-ignore" href="https://www.facebook.com/NationalEyeInstitute">Facebook</a></li>
|
||
<li class="o-menu-social__item"><a class="o-menu-social__link o-menu-social__link--twitter outlink-ignore" href="https://twitter.com/NatEyeInstitute">Twitter</a></li>
|
||
<li class="o-menu-social__item"><a class="o-menu-social__link o-menu-social__link--linkedin outlink-ignore" href="https://www.linkedin.com/company/national-eye-institute-nei">LinkedIn</a></li>
|
||
<li class="o-menu-social__item"><a class="o-menu-social__link o-menu-social__link--youtube outlink-ignore" href="https://www.youtube.com/user/neinih">YouTube</a></li>
|
||
</ul>
|
||
|
||
<p> </p>
|
||
</div>
|
||
|
||
<div class="o-footer__group o-footer__group--contact">
|
||
<h2 class="o-footer__title">Contact NEI</h2>
|
||
|
||
<ul class="o-menu-footer">
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="/contact-us/">Contact Us</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://www.nih.gov/about-nih/visitor-information">Visit NIH</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://list.nih.gov/cgi-bin/wa.exe?SUBED1=insidenei&A=1">Get Email Updates from NEI</a></li>
|
||
</ul>
|
||
</div>
|
||
|
||
<div class="o-footer__group o-footer__group--policies">
|
||
<h2 class="o-footer__title">Policies</h2>
|
||
|
||
<ul class="o-menu-footer">
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="/accessibility-information">Accessibility</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://www.nih.gov/nondiscrimination-notice-language-assistance-services">Information in Other Languages</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="/nei-website-privacy-policy">Privacy</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="/freedom-information-act">Freedom of Information Act (FOIA)</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="/disclaimers">Disclaimers</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="/web-policies ">Web Policies</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://www.hhs.gov/vulnerability-disclosure-policy/index.html ">Vulnerability Disclosure</a></li>
|
||
</ul>
|
||
</div>
|
||
|
||
<div class="o-footer__group o-footer__group--employees">
|
||
<h2 class="o-footer__title">For NEI Employees</h2>
|
||
|
||
<ul class="o-menu-footer">
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://intranet.nei.nih.gov">Intranet</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://intranet.nei.nih.gov/hr/Pages/emergency.aspx">Emergency Information</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://ned.nih.gov/search/search.aspx">NIH Staff Directory</a></li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
|
||
<div class="o-footer__row">
|
||
<div class="o-footer__full o-footer__full--parent">
|
||
<ul class="o-menu-footer o-menu-footer--swing">
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://www.nih.gov/">NIH.gov</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://hhs.gov/">HHS.gov</a></li>
|
||
<li class="o-menu-footer__item"><a class="o-menu-footer__link" href="https://usa.gov/">USA.gov</a></li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
</div>
|
||
|
||
|
||
</footer>
|
||
</div>
|
||
|
||
</div>
|
||
|
||
</div>
|
||
|
||
|
||
|
||
<div class="c-lb-wrapper" id="lb-wrapper" aria-hidden="true">
|
||
<div class="c-lb-overlay" tabindex="-1"></div>
|
||
<div role="dialog" class="c-lb" id="lb">
|
||
<div class="c-lb-header">
|
||
<button class="c-lb-close-btn"><span class="c-lb-close-btn-text">Close</span><span class="c-lb-close-btn-text times" aria-hidden="true">×</span></button>
|
||
</div>
|
||
<figure class="c-lb-figure">
|
||
<figcaption class="c-lb-caption"></figcaption>
|
||
</figure>
|
||
</div>
|
||
</div>
|
||
|
||
<script src="/sites/default/files/js/js_agazM-qm5cOcplNZo9kNIWFtUrwt0V1xgAKtLyM44Us.js?scope=footer&delta=0&language=en&theme=nei&include=eJxdjEEOgCAMBD-E9kmkYrOpqdQAMerr5eBBvUx29jCp8HUKQOkZAe4wiY1B6Pj7yAsf33MNmZvuEq0nojnPmkFvCVmUYD6xDTUV3Vq9ATUbLxk"></script>
|
||
<script src="/themes/custom/nei/js/scripts.js?sraguf"></script>
|
||
|
||
</body>
|
||
</html>
|