»ùÒòÐÍÅжÏÊÇÓ¦ÓûùÒò¹¤³ÌСÊóµÄÀú³ÌÖбز»¿ÉÉٵİ취¡£
ËäÈ»Õâ¸öÊÂÇéºÜ»ù´¡£¬µ«ÕæµÄ³£³£»áÓöµ½ÎÊÌ⣬²¢²»ÊǼ¸¸ö×Ö¡ª¡ªÊóβDNA PCR¡ª¡ª¾Í¼òÆӸ㶨ÁË¡£¾¿ÆäÔµ¹ÊÔÓÉÍùÍùÔÚÓÚδÔø×¢ÖصÄϸ½Ú¡£
Ò²ÐíÐí¶àÈËÒÔΪÕû¸ö»ùÒòÐÍÅжÏÀú³Ì¾ÍÖ»ÊÇ PCR ·´Ó¦¡£³öÁËÎÊÌâ¾ÍÆ´Ãü×·Äî PCR Àú³ÌÖеIJÙ×÷£ºÓÐûÓÐÍü¼ÓÒýÎï¡¢Íü¼Ó DNA Ä£°å¡¢Íü¼Óø£¬ÕâÒ»Àà¡°Ò»²»×¢ÖØ¡±µÄʧÎó......·¢Ã÷¶¼OKµÄ°¡£¬È»ºó¾ÍÒ»Á³Ã£È»ÁË......
×Åʵ£¬»ùÒòÐÍÅжÏÖУ¬Ð¡Êó»ùÒò×é DNA µÄÖƱ¸Ò²Ö±½Ó¾öÒéЧ¹ûµÄÓÅÁÓ¡£ÄÏÄ£ÉúÎï¿ÉÌṩСÊó»ùÒòÐÍÅжÏЧÀÍ
DNA ÖÊÁ¿²»¸ß
ΪÁËÄÜ¿ìËÙ»ñµÃ»ùÒòÐÍЧ¹û£¬½ÓÄɼî±äÐÔ¿ìËÙ³éÌá DNA µÄÒªÁ죬ËäÈ»Àú³ÌºÜ¼òÆÓ£¬µ«ÕâÑùÖƱ¸µÄ DNA ÖÊÁ¿½Ï²î£¬ºÜÈÝÒ×±¬·¢×ö²»³öЧ¹ûµÄÇéÐΣ»»òÕßʹÓÃÖ±½Ó PCR À©ÔöÊÔ¼ÁºÐ£¨½«ÊóβÔÚÊÔ¼ÁÖнþÅÝ20·ÖÖÓºóÈ¡ÉÏÇåÖ±½Ó×÷Ϊģ°å£©£¬ÓÉÓÚÊÔ¼ÁºÐÑ¡ÔñµÄÖÖÀà½ÏÁ¿¶à£¬²»ÊÇËùÓеĻùÒòÐÍÅжϼƻ®¶¼ÊʺÏÕâÖÖ·½·¨£¬ÌØÊâÊDzî±ð³§¼ÒµÄÊÔ¼ÁºÐÀ©ÔöЧÂÊÒ²·×ÆçÑù£¬ÈôÊDZ¬·¢ PCR Ч¹û²»²ÇÏëµÄ״̬£¬Õվɽ¨ÒéÓùŰåµÄ DNA ÌáÈ¡ÒªÁ죬ÏÈ»ñµÃ¸ß´¿¶È DNA Ä£°å£¬ÔÙ¾ÙÐÐ PCR ·´Ó¦¡£
×ÛÊÊʱ¼ä±¾Ç®ÓëÀÖ³ÉÂÊÁ½´óÒòËØ£¬Ê¹ÓÃÁѽâÒº¼ÓÂÑ°×øKÅä·½ÁѽâÊó⣬ÊÍ·Å DNA£¬²¢Í¨¹ý¾Æ¾«³ÁµíµÄÒªÁì»ñµÃ´¿¶È½Ï¸ßµÄDNA£¬ÊǸßЧÇáÓ¯µÄСÊó»ùÒò×é DNA ÖƱ¸ÒªÁì¡£
СÊó»ùÒò×é³éÌáProtocol
ÂÑ°×øKÖü´æÒºµÄÅäÖÆ£ºÓó¬´¿Ë®³¹µ×ÏûÈÚÂÑ°×øK·Û¼Á, ʹÖÕŨ¶ÈΪ10mg/ml£¬·Ö×°³É1ml/vial, -20¶ÈÉúÑÄ¡£ÁѽâÒºµÄÖ÷ÒªÒòËØ£ºSDS¡¢EDTA¡¢Tris/HCl¡¢NaCl¡£Ð¡Êóβ»ùÒò×éDNAÌáÈ¡°ì·¨£º£¨1£©¼ôȡСÊóβ¶ËÔ¼0.5ÀåÃ×£¨ÊÓÊóÁä¼°Êóβ´Öϸ¿Éµ÷½â, Ö»¹ÜʹÊóβÌå»ýÏ໥¿¿½ü£©£¬½«Êóβ·ÅÈëÒѱàºÅ1.5mlÀëÐĹÜÖв¢¸ÇºÃ¸Ç×Ó¡££¨2£©Ã¿¹Ü¼Ó0.5mlÁѽâÒººÍ50?lÂÑ°×øKÖü´æÒº²¢½«¸Ç¸Ç½ô¡£ £¨3£©½«ÀëÐĹÜÖÃÓÚÔÓ½»¹ÜÖв¢ÓÃÖ½ÍÅÉÔ¼ÓÀο¿¡££¨4£©½«ÀëÐĹÜÖÃÔÓ½»Â¯ÖУ¬56¡æת¶¯×¡ËÞ¡££¨5£©Ô½ÈÕ½«Ñù±¾ÓÚÊÒΣ¬12000rpmÀëÐÄ 10·ÖÖÓ¡££¨6£©ÉÏÇåµ¹Èë1.5ml ÀëÐĹÜÖУ¬¼Ó1ml ÎÞË®ÒÒ´¼£¨Ô¼2±¶ÉÏÇåÌå»ý£©£¬¸Ç½ô¸Ç×ÓºóÇáÒ¡£¬¿É¼ûÐõ×´³Áµí¡£13000rpm, 15min,ÆúÉÏÇå¡££¨7£©¼Ó70%ÒÒ´¼1ml£¬Ï´µÓ£¬13000rpmÀëÐÄ10~15min£¬ÆúÉÏÇ壬ÍøÂç³Áµí£¬ÊÒÎÂÁÀ10~15min¡£ £¨8£©Ã¿¹Ü¼Ó80~100?l Ãð¾úË®£¬¸ÇºÃºóÖÃÊÒλò37¡æһСʱ³ä·ÖÏûÈÚ¡£ÔÚÊÒÎÂÖа²ÅÅÊýСʱ£¬´ýDNAËùÓÐÏûÈÚºó-20¡æÉúÑÄ£¬»òÖ±½Ó¾ÙÐÐPCR»òÔÓ½»µÈʵÑé¡£ÈçDNAÏûÈÚ²»ÍêÈ«,ÔÚ37¡æˮԡÖа²ÅÅ30~60min£¬µ«²»¿ÉסËÞ¡£DNAÑùÆ·µÄOD260/280ÔÚ1.8-2.0Ö®¼ä¡£×¢ÖØ£ºÁѽâÊóβһ¶¨Òª³ä·Ö£¬ÓÐÌõ¼þÖ»¹ÜʹÓÃÔÓ½»Â¯¡£ÓÉÓÚÈôÊÇÁѽâÀú³ÌÖÐ×éÖ¯ÓëÁѽâҺʼÖÕ¼á³Ö¾²Ö¹£¬¶øûÓзתµÄÀú³Ì£¬Õâ»áµ¼ÖÂDNAºÍÊóë֮ÀàµÄÔÓÖÊûÓÐÍêÈ«ÍÑÀë¡£ÀëÐÄÈ¥³ýÔÓÖʵÄÀú³ÌÖУ¬DNA¾Í»áËæ×ÅÕâЩÔÓÖÊÒ»Æð±»ÑïÆúÁË¡£
DNA Ä£°åŨ¶È¹ý¸ß
×öÈ˲»¿ÉÌ«Ì°ÐÄ¡£DNA Ä£°å²»ÊÇÔ½¶àÔ½ºÃµÄ¡£Ò»Ñùƽ³£½¨Ò齫ģ°åŨ¶È¿ØÖÆÔÚ50-100ng/?l ¾ÙÐÐ PCR À©Ôö¡£
PCR ø²»¶ÔÊÊ
DNA ÖÊÁ¿ºÜºÃ£¬Å¨¶ÈÒ²¿ØÖÆÔÚ±ê׼Ũ¶È£¬PCR ÕÕ¾É×ö²»³öÀ´£¬Ôµ¹ÊÔÓÉ¿ÉÄÜÊÇ PCR øûÓÐÑ¡ÔñºÃ£¬²î±ðµÄ PCR ²úÆ· GC º¬Á¿·×ÆçÑù£¬Óö¼û GC º¬Á¿ºÜ¸ßµÄ²úÆ·ÍùÍùͨÀýµÄ PCR øû·¨×ö³öºÜºÃµÄЧ¹û¡£Ò»Ñùƽ³£ÔÚ¶¨ÖƵĻùÒò¹¤³ÌСÊóÅжϼƻ®ÖлáÖ¸³öÊÊºÏµÄ PCR øµÄ»õºÅ£¬Æ¾Ö¤ÒÑÑéÖ¤µÄ¼Æ»®ÒÔ¼°ÍƼöµÄøϵͳ£¬Ò»Ñùƽ³£²»»áÍÉ»¯¡£¿´Ò»¿´»ùÒò¹¤³ÌСÊóµÄÅжϼƻ®Ò»Ñùƽ³£³¤Ê²Ã´Ñù×Ó£º
Tips£º
ÉÏÃæµÄµçӾͼÖÐÄãÊDz»ÊÇ·¢Ã÷ÁËʲô£¿ÎªÊ²Ã´×ª»ùÒò Cre СÊóµÄÅжÏЧ¹û»áÓÐÁ½Ìõ´ø£¿³ýÁË´ý¼ì²âµÄÑùÆ·ÒÔÍ⣬ÉÐÓÐÁ½¸ö Control ±ÈÕÕ¿×£¿Ã»´í£¡ÕâÀïС±àÒªÌáÐѸ÷ÈË£¬±ÈÕÕ Control µÄÉèÖúÜÊÇÖ÷Òª£¡ÕâÇ¡Ç¡ÊÇÐí¶àͬÑâËùºöÂԵġ£ÔÚÒ»Ñùƽ³£µÄ Genotyping ÄÚÀÿһ´ÎÅжÏÖÁÉÙÒªÉèÖÃÒ»¸ö WT Control ºÍÒ»¸ö H2O£¬Ò²¾ÍÊÇ Blank Control¡£WT Control µÄÒâÒ壺1£©×ÊÖúÎÒÃÇ¿ìËÙÅжϻùÒòÐÍ¡£ÔÚ Flox СÊó»òƬ¶Ï knockin СÊóµÄÅжÏÖУ¬ÈôÊDzúÆ·Ìõ´ø½öÓÐÒ»Ìõ»òÆäÖÐÓÐÒ»ÌõÓë WT Control Ò»Ö£¬ÄÇô¿ÉÒÔÅжϸÃÑù±¾Îª WT »ò ÔÓºÏ×Ó¡£2£©×ÊÖúÎÒÃÇÅÐ¶Ï PCR ϵͳÊÇ·ñ work¡£ÈôÊÇ PCR ²úÆ·ÔÚÅܵçÓ¾µÄʱ¼äÁ¬WT Control µÄÑùÆ·¶¼Ã»ÓгöÌõ´ø£¬ÄÇô˵Ã÷ PCR ϵͳÓÐÎÊÌ⣬ÐèÒª×öÏìÓ¦µÄµ÷½â£¬ºÃ±È˼Á¿Ìæ»»ÒýÎï»ò PCR mix µÈ¡£Blank Control µÄÒâÒ壺H2O ±ÈÕÕÖ÷ÒªÊÇÓÃÀ´ÖÊ¿Ø PCR ϵͳÊÇ·ñ±¬·¢ÁËÎÛȾ¡£ÈôÊÇ H2O ±ÈÕÕ¶¼ÓÐÌõ´ø£¬ËµÃ÷Õû¸ö PCR ϵͳ±£´æÎÛȾµÄÎÊÌ⣬Õâ¸ö PCR Ч¹û²»¿ÉÐÅ¡£Internal Positive Control Primers µÄÒâÒ壺Internal Positive Control Ò»Ñùƽ³£ÓÃÔÚËæ»ú²åÈëת»ùÒòСÊóµÄÅжÏÖС£Í¨³£×ª»ùÒòÅжÏÒýÎïÊÇÖ»Õë¶Ô²åÈëµÄÍâÔ´ DNA ÐòÁеģ¬ÒÔÊÇûÓб¬·¢Ëæ»úÕûºÏµÄСÊó DNA Ä£°å²»»áÓÐ PCR ²úÆ·±¬·¢¡£ÕâÑùÒ»À´ºÜÈÝÒ×±¬·¢¼ÙÒõÐÔµÄÎÊÌâ¡£Ò²¾ÍÊÇ˵µçӾûÓÐÌõ´ø£¬ÎÒÃÇÎÞ·¨ÅжϾ¿¾¹ÊÇÍâÔ´»ùÒòδÕûºÏµÄÒõÐÔЧ¹û£¬ÕÕ¾ÉÓÉÓÚ PCR ϵͳ×Ô¼ºµÄÎÊÌâÔì³ÉÒõÐÔЧ¹û¡£ÒÔÊÇÐèÒªÁíÒ»¶ÔÔÚËùÓÐСÊóÖж¼ÄÜ»ñµÃ PCR ²úÆ·µÄÑôÐÔ±ÈÕÕÒýÎï×÷ΪÄÚ¿Ø£¬¼´Internal Positive Control£¬ÓÃÓÚÅÐ¶Ï PCR ϵͳºÍÄ£°åÖÊÁ¿ÊÇ·ñºÏÊÊ¡£
PCR ÒÇ
ÈôÊÇ PCR ÒǺã¾Ãδ×öζÈУ׼£¬ÄÇôÒÇÆ÷ÏÔʾµÄζȺÍÏÖʵζȾͱ£´æ²î±ð¡£×ÝÈ»Äõ½¶¨ÖÆСÊóµÄÅжϼƻ®£¬Õվɽ¨ÒéÔÚ×Ô¼º³£ÓõÄPCRÒÇÉÏÃþÒ»¸öÍË»ðζȵÄζÈÌݶȣ¬ÕÒµ½×îºÏÊʵÄPCRÍË»ðζÈÔÙ¾ÙÐÐÕûÌå PCR Åжϡ£