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ÔÆ¶ËÂÛÄÔ µÚ37ÆÚ Ô¤¸æ£üFGF13»ùÒòµãÍ»±äÒý·¢ÖÇÁ¦ÕϰµÄ»úÖÆÑо¿ ¾¡¹ÜÐí¶à»ùÒò±äÒì¿ÉÄÜÓëÏÈÌìÖÇÁ¦Õϰ ( intellectual disability, ID)Óйأ¬µ«µ¼ÖÂÏÈÌìÖÇÁ¦ÕϰµÄ»ùÒòÍ»±äÔںܴó³Ì¶ÈÉÏÈÔ²»Çå³þ¡£ÎÒÃÇɸѡÁË»¼ÓÐÑÏÖØÖÇÁ¦ÕϰµÄÖйúºº×å¶ùͯµÄ»ùÒòÍ»±ä£¬·¢ÏÖ3ÃûÄÐÐÔ¶ùͯÔÚ³ÉÏËάϸ°ûÉú³¤Òò×Ó13 (FGF13) mRNA µÄ5 '-·Ç·ÒëÇø(5 '-UTR)´æÔÚµ¥ºËÜÕËá¶à̬ÐÔ(SNP)¡£ÔÚHEK293ϸ°ûºÍ»¼ÕßÀ´Ô´µÄÓÕµ¼¶àÄܸÉϸ°ûÖУ¬ÕâÖÖSNP½µµÍÁËFGF13µÄ·Ò룬¶øFGF13Îȶ¨·¢ÓýÖеÄÉñ¾ÔªÖеÄ΢¹Ü¡£Fgf13»ùÒò5 '-UTRͬԴµãÍ»±äСÊó±íÏÖΪƤ²ã·¢Óý¹ý³ÌÖÐÉñ¾ÔªÇ¨ÒÆÑÓ³Ù£¬Ñ§Ï°¼ÇÒäÄÜÁ¦¼õÈõ¡£´ËÍ⣬ÕâÖÖSNP½µµÍÁËFGF13 5 '-UTRºÍ¶àà×à¤Êø½áºÏµ°°×2 (PTBP2)Ö®¼äµÄÏ໥×÷Óã¬ÕâÊÇÆ¤²ãÉñ¾ÔªÖÐFGF13·ÒëËù±ØÐèµÄ¡£Òò´Ë£¬FGF13µÄÕâ¸ö5 '-UTR SNP¸ÉÈÅÁËFGF13µÄ·Òë¹ý³Ì£¬µ¼Ö´óÄÔ·¢ÓýºÍÈÏÖª¹¦ÄÜȱÏÝ¡£ Title: 5'-UTR SNP of FGF13 causes translational defect and intellectual disability Link: https://elifesciences.org/articles/63021 The congenital intellectual disability (ID)-causing gene mutations remain largely unclear, although many genetic variations might relate to ID. We screened gene mutations in Chinese Han children suffering from severe ID and found a single-nucleotide polymorphism (SNP) in the 5¡ä-untranslated region (5¡ä-UTR) of fibroblast growth factor 13 (FGF13) mRNA (NM_001139500.1:c.-32c>G) shared by three male children. In both HEK293 cells and patient-derived induced pluripotent stem cells, this SNP reduced the translation of FGF13, which stabilizes microtubules in developing neurons. Mice carrying the homologous point mutation in 5¡ä-UTR of Fgf13 showed delayed neuronal migration during cortical development, and weakened learning and memory. Furthermore, this SNP reduced the interaction between FGF13 5¡ä-UTR and polypyrimidine-tract-binding protein 2 (PTBP2), which was required for FGF13 translation in cortical neurons. Thus, this 5¡ä-UTR SNP of FGF13 interferes with the translational process of FGF13 and causes deficits in brain development and cognitive functions. »áÒéÐÅÏ¢Ö÷Ìâ£ºÔÆ¶ËÂÛÄÔ37ÆÚ-ÕÔ¾´ÈÙ²©Ê¿ ʱ¼ä£º 2021Äê9ÔÂ26ÈÕ 9:00 £¨±±¾©Ê±¼ä£© 2021Äê9ÔÂ26ÈÕ 3:00 £¨°ØÁÖʱ¼ä£© 2021Äê9ÔÂ25ÈÕ 21:00£¨²¨Ê¿¶Ùʱ¼ä£© 2021Äê9ÔÂ25ÈÕ 20:00£¨Ö¥¼Ó¸ç-ÐÝ˹¶Ùʱ¼ä£© 2021Äê9ÔÂ25ÈÕ 18:00£¨¾É½ðɽ-Âåɼí¶Ê±¼ä£© »áÒéÁ´½Ó£ºhttps://ucsf.zoom.us/my/greentea ... 1VKdzRzcHdsaUhxQT09 »áÒéID£º246 710 8241 Passcode:690627 ·¢×ÔСľ³æAndroid¿Í»§¶Ë |
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zhoulitom
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