ð ç¥ããŒãã«ååŠè³åè³ð âšã²ãã ç·šéæè¡ïŒCRISPR-Cas9ã®ãã«ããªæŽ»çšæ¹æ³ïŒãåç»è§£èª¬ã#00014
åç»è§£èª¬
ååã«åŒãç¶ããCRISPR-Cas9ã®ã話ãã§ãïŒä»åã¯ããããã©ããã£ãŠéºäŒåç·šéã«å¿çšããã®ãïŒïŒïŒ
ã«ã€ããŠèª¬æããŠãããŸãã
#00013ã§ã¯ ãCRISPR-Cas9çºèŠã®çµç·¯ãåçã«ã€ããŠã話ãããŸããã
ïŒCRISPR-Cas9ã¯çŽ°èã®ç²åŸå
ç«ã·ã¹ãã ã§ãããð¡ïŒ
ãªããšïŒïŒæšæ¥çºè¡šããã2020幎ããŒãã«ååŠè³ã¯ãéçºè ã§ãããžã§ããã¡ãŒã»ããŠããå çãšããšããã¥ãšã«ã»ã·ã£ã«ãã³ãã£ãšå ç(#00013åç §)ãåè³ããããšã«æ±ºå®ããŸããð§¬âšããã§ãšãããããŸãð
å®éã®éºäŒåç·šéã®ããæ¹ã§ãããåïœãã·ã³ãã«ã«èšããšãã
è©Šéšç®¡ã®äžã«
â ç·šéãããéºäŒåãå«ãDNA
â¡ã¬ã€ãRNA
â¢Cas9é
µçŽ
ã®3ã€ãå
¥ããã°ãéºäŒåãç·šéã§ãã¡ããâŠãšããäºã§ãã
ç§ã¯ãã®æè¡ã®ããšãç¥ã£ããšããããŸãã§æçã¿ããããšæããŸããã
äœã³ã¹ããçæéããããæ£ç¢ºã«éºäŒåãæžãæããããäºãããç 究ãåµè¬ãå»çãé£æçç£ãããæ§ã ãªåéã«å€å€§ãªãæ©æµãããããå¯èœæ§ãç§ããŠããŸãã
éºäŒåç·šéæè¡ã¯èª°ã§ãç°¡åã«ã§ããæè¡ã§ããããã¯ãè£ãè¿ãã°ã誰ããç°¡åã«éºäŒåãæžãæããããããšããäºã§ããããŸãã
åœç¶ãéºäŒåã¯èªåãã¡ã®éœåã®ããããã«å®æã«æžãæããŠãããã®ã§ã¯ãããŸãããçŽ æŽãããæè¡ã ããããã䜿ã人äžäººäžäººãå«ç芳ãæã£ãŠå©çšããŠããããšãæ±ããããŸãã
ããŒãã«è³åè³ã«ããããã«æ³šç®ã济ã³ããšæããŸãããæ¬åœã«å¿
èŠãšãã人ãå¿
èŠãªæã«å©çšã§ããããã«ã瀟äŒçãªã«ãŒã«ãããã«æŽåãããŠããããšãé¡ããŸãã
ã§ã¯ãæ¯éãèŠèŽãã ããâš
è£è¶³ã»ä¿®æ£
DNAåæåŸã®ä¿®åŸ©ã«ã¯
â éçžåçµæã修埩ïŒNHEJïŒ
â¡çžåçµã¿æã修埩ïŒHDRïŒ
ã®2ãã¿ãŒã³ããããŸãã
â NHEJã¯çŽ°èåšæã«äŸåããªã修埩ã§ãåæãããäºæ¬éDNAã®æ«ç«¯ãåçŽã«ã€ãªããæ©æ§ã§ããé£çµæã«ã¯ãšã©ãŒãçãããããæ°bpïœæ°10 bpã®å¡©åºæ¬ 倱ãçããŠçµæçã«ãã¬ãŒã ã·ãããèµ·ããããšã«ããéºäŒåãæ£åžžã«æ©èœããªããªããŸãããŸããåå¿æã«ã¯åæé µçŽ ïŒCas9ïŒãéå°ã«ååšããŠããã®ã§ãåãéšäœã«äœåºŠãäºæ¬éåæãçãããããããé«ç¢ºçã§å¡©åºæ¬ 倱ãèµ·ããããšã«ãªããŸãã
â¡HDRã¯çŽ°èåšæäŸåæ§ã®åå¿ã§ãæ£åžžéºäŒåãé³åãšããŠä¿®åŸ©ãããããæ£ç¢ºãªéºäŒå修埩ãå¯èœã§ãã以äžéºäŒåéšäœãCRISPR-Cas9ã·ã¹ãã ã«ããåæããæ£åžžé
åãæã€ãããŒDNAãååšããã°ããããé³åãšããŠçžåçµã¿æãã«ããéºäŒå修埩ãå¯èœã«ãªããŸãã
ãŸãã以å説æããããã¯ã¢ãŠãããŠã¹äœææã®ããã«ãç¹å®ã®é
åãä»»æã®éšäœã«æ£ç¢ºã«æ¿å
¥ããããšãå¯èœã§ãã
ç·šéè ãã
䜿çšæ©æ
å€æŽãããŸããã詳ããã¯ãã¡ãããïŒ
ãµã ãã€ã«
æ°ã·ã¹ãã ã«ãªã£ãŠå€æŽç¹ããããããã£ãã®ã§è§Šããããªãã£ãã®ã§ãããåç»ã®ãµã ãã€ã«ã®é°å²æ°ãããªãå€ãã£ãããšã¯ãããæ°ã¥ãã®ããšãšæããŸããä»ãŸã§ã¯äžã€ã®æ±ºãŸã£ããã³ãã¬ãŒãã䜿çšããŠãµã ãã€ã«ãäœã£ãŠããŸããã#00009ãããµã ãã€ã«ãç·šéæ
åœãäœæããããã«ãªããŸãããã¡ãªã¿ã«ç§ã¯YouTubeã§å人çã«æŽ»åããŠããææãããã®ã§ããµã ããããã«å€§åãªã®ãçç¥ããŠããŸãããããç 究宀ã¯é£ãããšæãããã¡ãªç§åŠãåããããã解説ããŠäžè¬ã®äººã
ã«ãç§åŠã身è¿ã«æããŠããããšããç®çãããã®ã§ãæããããããªã€ã¡ãŒãžã®ãµã ãäœããéèŠã ãšèããŸãããè²ã¯æããè²ã䜿ããŸããæåã¯å°ãªãã代ããã«åçãã€ã©ã¹ããå€çšããŸãããµã ãäœãã«ãããæéã¯çŽ30åã§ããäœãã¿ãŒã³ãäœã£ãŠã¿ãŠèªåããã£ããæ¥ããã®ãæ¡çšããŸãããµã ãã€ã«ã¯åç»ãèŠãŠãããããã«ããã£ãŠãããéã§ããéãéã£ãŠããããªããšãåç»ã¯èŠãŠããããŸããããµã ãäœãã¯ããããªYouTuberããã®åç»ãèŠãŠå匷ããŠããŸãããã£ãšèå³ãåŒããããªãµã ãäœããç®æããŸãïŒ
å šèšäºãç¡æã§å ¬éããŠããŸããé¢çœããšæã£ãŠããã ããæ¹ã¯ããµããŒãããŠããã ãããšå¬ããã§ãããããç 究宀ã®æŽ»åã«äœ¿çšãããŠããã ããŸãã