{"id":16522,"date":"2026-01-09T10:23:03","date_gmt":"2026-01-09T15:23:03","guid":{"rendered":"https:\/\/www.med.unc.edu\/genetics\/?p=16522"},"modified":"2026-01-09T10:24:57","modified_gmt":"2026-01-09T15:24:57","slug":"unc-researchers-build-stem-cell-models-to-mimic-early-brain-development","status":"publish","type":"post","link":"https:\/\/www.med.unc.edu\/genetics\/unc-researchers-build-stem-cell-models-to-mimic-early-brain-development\/","title":{"rendered":"UNC Researchers Build Stem Cell Models to Mimic Early Brain Development"},"content":{"rendered":"<p class=\"lead\">A new study in the lab of Jason Stein, PhD, modeled brain development in a dish to identify cells and genes that influence infant brain growth, a trait associated with autism.<\/p>\n<hr \/>\n<figure id=\"41916\" class=\"thumbnail wp-caption alignright featured-image\"><a href=\"https:\/\/news.unchealthcare.org\/wp-content\/uploads\/sites\/1159\/2025\/12\/marek-pavlik-MnPub5t9H60-unsplash-1024x576.jpg\" data-slb-active=\"1\" data-slb-asset=\"1657359919\" data-slb-internal=\"0\" data-slb-group=\"41913\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-medium size-medium wp-post-image\" src=\"https:\/\/news.unchealthcare.org\/wp-content\/uploads\/sites\/1159\/2025\/12\/marek-pavlik-MnPub5t9H60-unsplash-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" \/><\/a><figcaption class=\"caption wp-caption-text\">Photo by Marek Pavl\u00edk on Unsplash.<\/figcaption><\/figure>\n<p>Researchers have made great strides to understand early signs of autism.<\/p>\n<p>Studies have found that certain factors like genetics,\u00a0<a href=\"https:\/\/news.unchealthcare.org\/2023\/12\/enlarged-spaces-in-infant-brains-linked-to-higher-risk-of-autism-sleep-problems\/#:~:text=Dea%20Garic%2C%20PhD%2C%20and%20Mark%20Shen%2C%20PhD%2C%20both,greater%20chance%20of%20developing%20autism%20later%20in%20life.\">sleep deprivation<\/a>,\u00a0<a href=\"https:\/\/news.unchealthcare.org\/2023\/12\/enlarged-spaces-in-infant-brains-linked-to-higher-risk-of-autism-sleep-problems\/#:~:text=Dea%20Garic%2C%20PhD%2C%20and%20Mark%20Shen%2C%20PhD%2C%20both,greater%20chance%20of%20developing%20autism%20later%20in%20life.\">excess fluid in the brain<\/a>\u2014and brain size\u2014can increase the risk of neurodevelopmental conditions, like autism.<\/p>\n<p>Brain overgrowth has emerged as a new potential early biomarker of autism in recent years. Researchers are now seeking to understand why and how this is the case. New research in the lab of\u00a0<a href=\"https:\/\/www.med.unc.edu\/genetics\/directory\/jason-stein-phd\/\">Jason Stein, PhD<\/a>, a genetics expert at the UNC School of Medicine, has just identified two specific types of brain cells linked to increased brain growth.<\/p>\n<p>The study\u2014led by Rose Glass, PhD, and Nana Matoba, PhD\u2014was conducted using meticulously grown stem cells that mimic the earliest stages of human brain development in a dish. The findings, which\u00a0<a href=\"https:\/\/www.cell.com\/cell-stem-cell\/abstract\/S1934-5909(25)00435-7\">were published<\/a>\u00a0in\u00a0<em>Cell Stem Cell<\/em>, show that this method can serve as a trusty and accurate modeling system for brain development, with which other scientists can use to study the early signs and causes of autism.<\/p>\n<figure id=\"attachment_41915\" class=\"thumbnail wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-41915\" src=\"https:\/\/news.unchealthcare.org\/wp-content\/uploads\/sites\/1159\/2025\/12\/rose.300x0-241x300.jpg\" alt=\"\" width=\"241\" height=\"300\" \/><figcaption class=\"caption wp-caption-text\">Madison \u201cRose\u201d Glass, PhD. Credit: Sahin Lab<\/figcaption><\/figure>\n<p>\u201cOur research indicates that our participant-derived brain cell models, or brain organoids, are a good model system for studying early brain development,\u201d said Glass, who is now a postdoctoral research fellow at Boston Children\u2019s Hospital\/Harvard Medical School. \u201cWe can now use this information to study cellular changes, like those caused by environmental toxin exposure, and how they contribute to autism.\u201d<\/p>\n<p>Previous findings into brain size and autism were made by the\u00a0<a href=\"https:\/\/ibis-network.com\/\">Infant Brain Imaging Study (IBIS),<\/a>\u00a0a nationwide network of researchers studying autism through brain imaging scans of infants.<\/p>\n<p>For the past 20 years, five universities, with the University of North Carolina-Chapel Hill as the lead site, have been studying the brains of infants with high familial risk for autism.<\/p>\n<p>Glass, Matoba, and Stein collaborated with clinical colleagues and psychiatrists at the UNC School of Medicine and IBIS\u2014including\u00a0<a href=\"https:\/\/www.med.unc.edu\/psych\/people\/jessica-girault-phd\/\">Jessica Girault, PhD<\/a>,\u00a0<a href=\"https:\/\/www.med.unc.edu\/psych\/people\/mark-d-shen-phd\/\">Mark Shen, PhD<\/a>, and\u00a0<a href=\"https:\/\/www.med.unc.edu\/psych\/people\/joseph-piven-md\/\">Joseph Piven, PhD<\/a>\u2014to create a first-of-its-kind cellular model of brain development in order to better understand what leads to bigger or smaller brains.<\/p>\n<figure id=\"attachment_41914\" class=\"thumbnail wp-caption alignright\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-41914\" src=\"https:\/\/news.unchealthcare.org\/wp-content\/uploads\/sites\/1159\/2025\/12\/fx1_lrg-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" \/><figcaption class=\"caption wp-caption-text\">A graphical abstract showing reprogramming of cells for the project. Credit: Glass et al (2025).<\/figcaption><\/figure>\n<p>Researchers first collected whole blood samples from eighteen individuals in the IBIS study. They then pulled out white blood cells, known as peripheral blood mononuclear cells, and \u201creprogrammed\u201d them into pluripotent cells.<\/p>\n<p>These unique cells can transform into any cell type, so researchers urged them to become a piece of tissue that mimics some of the structure and function of a human brain, known as a brain organoid.<\/p>\n<p>A closer look revealed that changes in two brain cell types\u2014neural progenitor cells and choroid plexus epithelial cells\u2014are strongly associated with brain size of the participant from which they were derived.<\/p>\n<p>Neural progenitors are cells that make other brain cells, including neurons. Choroid plexus epithelial cells make up a specialized layer of cells in the brain that help support the growth and repair of neural progenitor cells.<\/p>\n<figure id=\"attachment_10465\" class=\"thumbnail wp-caption alignright\" style=\"width: 198px\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-10465 size-full\" src=\"https:\/\/www.med.unc.edu\/genetics\/wp-content\/uploads\/sites\/481\/2016\/10\/JasonStein.jpeg\" alt=\"Jason Stein\" width=\"188\" height=\"250\" \/><figcaption class=\"caption wp-caption-text\">Jason Stein, PhD, Associate Professor of Genetics; UNC Neuroscience Center<\/figcaption><\/figure>\n<p>Researchers found that there was a clear relationship between gene expression levels in neural progenitor cells and larger brain size. The finding alone confirms that the model they created accurately mimics a human brain and brain development. With the accuracy of the brain organoid model confirmed, the Stein lab began planning even more brain development studies.<\/p>\n<p>For example, the lab is\u00a0<a href=\"https:\/\/news.unchealthcare.org\/2025\/10\/unc-school-of-medicine-secures-two-major-nih-grants-for-autism-research\/\">currently investigating<\/a>\u00a0the potential effects of short- and long-term exposure to environmental toxicants, such as valproic acid (VPA), during pregnancy. The research project involves comparing brain organoids derived from individuals with and without autism to understand how exposure to these chemicals may lead to brain changes resulting in autism.<\/p>\n<p>\u201cWe\u2019re now focusing on studying prenatal exposures that are associated with autism diagnosis,\u201d stated Stein. \u201cWe want to study how environmental toxicants impact early brain development, and how genetic risk factors can accentuate those effects.\u201d<\/p>\n<p>This article originally appeared in the January 8, 2026 issue of UNC Vital Signs <strong><a href=\"https:\/\/news.unchealthcare.org\/2025\/12\/unc-researchers-build-stem-cell-models-to-mimic-early-brain-development\/\">HERE<\/a><\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new study in the lab of Jason Stein, PhD, modeled brain development in a dish to identify cells and genes that influence infant brain growth, a trait associated with autism.<\/p>\n","protected":false},"author":28418,"featured_media":2716,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[33],"class_list":["post-16522","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-stein","odd"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>UNC Researchers Build Stem Cell Models to Mimic Early Brain Development | Department of Genetics<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.med.unc.edu\/genetics\/unc-researchers-build-stem-cell-models-to-mimic-early-brain-development\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" 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