{"id":2210,"date":"2026-08-03T18:51:25","date_gmt":"2026-08-03T18:51:25","guid":{"rendered":"https:\/\/blogs.bmj.com\/jmg\/?p=2210"},"modified":"2026-08-03T18:51:25","modified_gmt":"2026-08-03T18:51:25","slug":"single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei","status":"publish","type":"post","link":"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/","title":{"rendered":"Single-cell transcriptomics identifies neural fate disruption and glial reprogramming caused by RARS2 deficiency (Contributed by Dr. Xing Wei)"},"content":{"rendered":"<p>Pontocerebellar hypoplasia type 6 is a severe childhood brain disorder caused by defects in genes important for mitochondrial function. In this study, we used zebrafish and single-cell RNA sequencing to understand how loss of RARS2 affects early brain development. We found that RARS2 deficiency damages mitochondrial structure, disrupts normal neuronal development, and promotes abnormal glial and stress-related programs. Our findings connect mitochondrial translation defects with altered gene regulation, RNA-processing pathways, and disturbed neural cell fate. This work provides a clearer framework for understanding RARS2-related disease and may help guide future studies of mitochondrial neurodevelopmental disorders. (<a href=\"https:\/\/jmg.bmj.com\/content\/early\/2026\/07\/29\/jmg-2025-111413\">https:\/\/jmg.bmj.com\/content\/early\/2026\/07\/29\/jmg-2025-111413<\/a>)<\/p>\n<p><a href=\"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/jmg_blog_rars2_zebrafish\/\" rel=\"attachment wp-att-2211\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2211\" src=\"https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-300x153.jpg\" alt=\"\" width=\"300\" height=\"153\" srcset=\"https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-300x153.jpg 300w, https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-1024x524.jpg 1024w, https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-768x393.jpg 768w, https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-1536x786.jpg 1536w, https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-2048x1047.jpg 2048w, https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-640x327.jpg 640w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Wild-type and rars2\u2212\/\u2212 embryos with brightfield and fluorescence staining in the head region<!--TrendMD v2.4.8--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pontocerebellar hypoplasia type 6 is a severe childhood brain disorder caused by defects in genes important for mitochondrial function. In this study, we used zebrafish and single-cell RNA sequencing to understand how loss of RARS2 affects early brain development. We found that RARS2 deficiency damages mitochondrial structure, disrupts normal neuronal development, and promotes abnormal glial [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":123,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2210","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Single-cell transcriptomics identifies neural fate disruption and glial reprogramming caused by RARS2 deficiency (Contributed by Dr. Xing Wei) - JMG Contact blog<\/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:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Single-cell transcriptomics identifies neural fate disruption and glial reprogramming caused by RARS2 deficiency (Contributed by Dr. Xing Wei) - JMG Contact blog\" \/>\n<meta property=\"og:description\" content=\"Pontocerebellar hypoplasia type 6 is a severe childhood brain disorder caused by defects in genes important for mitochondrial function. In this study, we used zebrafish and single-cell RNA sequencing to understand how loss of RARS2 affects early brain development. We found that RARS2 deficiency damages mitochondrial structure, disrupts normal neuronal development, and promotes abnormal glial [...]Read More...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/\" \/>\n<meta property=\"og:site_name\" content=\"JMG Contact blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-03T18:51:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1309\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"hqqu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@HuiQiQu\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"hqqu\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2026\\\/08\\\/03\\\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2026\\\/08\\\/03\\\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\\\/\"},\"author\":{\"name\":\"hqqu\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#\\\/schema\\\/person\\\/be0250f8d5b52412c3e7c222dabd591b\"},\"headline\":\"Single-cell transcriptomics identifies neural fate disruption and glial reprogramming caused by RARS2 deficiency (Contributed by Dr. Xing Wei)\",\"datePublished\":\"2026-08-03T18:51:25+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2026\\\/08\\\/03\\\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\\\/\"},\"wordCount\":134,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2026\\\/08\\\/03\\\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/files\\\/2026\\\/08\\\/JMG_blog_RARS2_zebrafish-300x153.jpg\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2026\\\/08\\\/03\\\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2026\\\/08\\\/03\\\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\\\/\",\"url\":\"https:\\\/\\\/blogs.bmj.com\\\/jmg\\\/2026\\\/08\\\/03\\\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\\\/\",\"name\":\"Single-cell transcriptomics identifies neural fate disruption and glial reprogramming caused by RARS2 deficiency (Contributed by Dr. Xing Wei) - 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We found that RARS2 deficiency damages mitochondrial structure, disrupts normal neuronal development, and promotes abnormal glial [...]Read More...","og_url":"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/","og_site_name":"JMG Contact blog","article_published_time":"2026-08-03T18:51:25+00:00","og_image":[{"width":2560,"height":1309,"url":"https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-scaled.jpg","type":"image\/jpeg"}],"author":"hqqu","twitter_card":"summary_large_image","twitter_creator":"@HuiQiQu","twitter_misc":{"Written by":"hqqu","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/#article","isPartOf":{"@id":"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/"},"author":{"name":"hqqu","@id":"https:\/\/blogs.bmj.com\/jmg\/#\/schema\/person\/be0250f8d5b52412c3e7c222dabd591b"},"headline":"Single-cell transcriptomics identifies neural fate disruption and glial reprogramming caused by RARS2 deficiency (Contributed by Dr. Xing Wei)","datePublished":"2026-08-03T18:51:25+00:00","mainEntityOfPage":{"@id":"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/"},"wordCount":134,"commentCount":0,"publisher":{"@id":"https:\/\/blogs.bmj.com\/jmg\/#organization"},"image":{"@id":"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/#primaryimage"},"thumbnailUrl":"https:\/\/blogs.bmj.com\/jmg\/files\/2026\/08\/JMG_blog_RARS2_zebrafish-300x153.jpg","inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/","url":"https:\/\/blogs.bmj.com\/jmg\/2026\/08\/03\/single-cell-transcriptomics-identifies-neural-fate-disruption-and-glial-reprogramming-caused-by-rars2-deficiency-contributed-by-dr-xing-wei\/","name":"Single-cell transcriptomics identifies neural fate disruption and glial reprogramming caused by RARS2 deficiency (Contributed by Dr. Xing Wei) - 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