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Key words:agarose gel electhophoresis; nucleic acid dye; Ethidium bromide ä廯ÒÒ¶§£¨EB£©ÔøÊÇÇíÖ¬ÌÇÄý½ºµçÓ¾ÖÐʹÓÃ×îΪÆÕ±éµÄºËËáȾÁÏ£¬±»¹ã·ºÓ¦ÓÃÓڹ۲졢¼ì²âºËËᣬ¾ßÓвÙ×÷¼òµ¥¡¢¿ìËÙ¼°ÁéÃô¶È¸ßµÈÌØµã£Û1£Ý¡£µ«×÷ΪһÖÖÇ¿ÓÕ±ä¼Á£¬EB¾ßÓиßÖ°©ÐÔ¡£·ÏÆúµÄEBȾҺÒ×ÎÛȾ»·¾³£¬±ØÐë½øÐо»»¯´¦Àí£¬¸øÊµÑéÑо¿ÈËÔ±´øÀ´Öî¶à²»±ã£Û1£Ý¡£ ½üÄêÀ´Â½ÐøÍƳöÁ˶àÖÖÐÂÐͺËËáȾÁÏ£¬±ÈÈçGoldViewna II£¬GoldView£¬DNA GreenµÈ¡£ÕâЩºËËáȾÁϵÄÁéÃô¶ÈÊÇ·ñ¸ßÓÚEB£¬ÄÜ·ñÌæ´úEB¹ã·ºÓÃÓÚDNAµÄȾɫÊÇÈËÃǹØÐĵÄÎÊÌâ¡£ ÓÐÑо¿ÏÔʾEBȾɫDNAʹÓúóȾ·¨±È½ÏºÃ£Û2£Ý¡£ÄÇô£¬ÐÂÐͺËËáȾÁÏʹÓÃȾ½º·¨¡¢ºóȾ·¨»¹ÊÇȾÑùÆ··¨µÄ¼ì²âÁéÃô¶È×î¸ß£¬×îʵÓÃÄØ£¿ ±¾ÎÄÔÚ3ÖÖȾɫ·½Ê½Ï·ֱðʹÓÃ4ÖÖºËËáȾÁ϶ÔÄý½ºÖеÄDNA½øÐÐȾɫ¡£ÔÚ3ÖÖȾɫ·½Ê½Ï±ȽÏ4ÖÖºËËáȾÁϵÄÁéÃô¶È£¬ÎªÏà¹ØÊµÑéÖÐÑ¡ÔñºÏÊʵĺËËáȾÁϺÍȾɫ·½·¨Ìṩ²Î¿¼¡£ 1 ²ÄÁÏÓë·½·¨ 1.1 Ö÷ÒªÊÔ¼Á µçÓ¾¼¶ÇíÖ¬Ìǹº×ÔÎ÷°àÑÀBIOSCIENCE¹«Ë¾¡£·Ö×ÓÁ¿±ê×¼DL15 000£«2 000¹º×ÔTakara¹«Ë¾¡£EBΪSigma¹«Ë¾²úÆ·£¬¹¤×÷Ũ¶ÈΪ0.5 ¦Ìg/ml¡£GoldViewna IIÐͺËËáȾÁÏ£¨5 000¡Á£©¹º×Ô±±¾©²©´óÌ©¿ËÉúÎï»ùÒò¼¼ÊõÓÐÏÞÔðÈι«Ë¾£¬¹¤×÷Ũ¶ÈΪ1¡Á.GoldView£¨20 000¡Á£©Îª±±¾©Èü°ÙÊ¢»ùÒò¼¼ÊõÓÐÏÞ¹«Ë¾²úÆ·£¬¹¤×÷Ũ¶ÈΪ1¡Á£»DNA Green£¨10 000¡Á£©ÎªÌìÔó»ùÒò¹¤³ÌÓÐÏÞ¹«Ë¾²úÆ·£¬È¾½ºÓëȾÑùÆ·µÄ¹¤×÷Ũ¶ÈΪ1¡Á£¬ºóȾµÄ¹¤×÷Ũ¶ÈΪ10¡Á£»ÆäÓàÊÔ¼Á¾ùΪ¹ú²ú·ÖÎö´¿¡£ 1.2 Ö÷ÒªÒÇÆ÷ Bio-RadµçӾϵͳ¼°Äý½º³ÉÏñϵͳ¡£ 1.3 ·½·¨ 1.3.1 Ⱦ½º·¨ Í¬Ê±ÖÆ±¸ËÄ¿é1£¥ÇíÖ¬ÌÇÄý½º¡£ÔÚÄý½ºÄý¹Ìǰ£¬·Ö±ð¼ÓÈë4ÖÖȾÁÏ¡£´ýÄý½ºÀäÈ´Äý¹Ìºó£¬·ÅÈëͬһµçÓ¾²ÛÖС£ÓÚ²»Í¬Ó¾µÀÖзֱð¼ÓÈë0.5 ng¡¢1 ng¡¢2 ng¡¢5 ng¡¢10 ng¡¢20 ng¼°50 ngµÄDL 15 000£«2 000.ʹÓÃ5V/cmµÄµçѹ½øÐеçÓ¾£¬×îºóÓÃÄý½º³ÉÏñϵͳ¹Û²ìÅÄÕÕ¡£ 1.3.2 ȾÑùÆ··¨ Í¬Ê±ÖÆ±¸ËĿ鲻¼ÓȾÁϵÄ1£¥ÇíÖ¬ÌÇÄý½º¡£´ýÄý½ºÀäÈ´Äý¹Ìºó£¬·ÅÈëͬһµçÓ¾²ÛÖС£½«·Ö±ð½«0.5 ng¡¢1 ng¡¢2 ng¡¢5 ng¡¢10 ng¡¢20 ng¼°50 ngµÄDL 15 000£«2 000Óë4ÖÖȾÁÏ»ìºÏ£¬±Ü¹â10 min.È»ºóÓÚ²»Í¬Ó¾µÀÖмÓÈ롣ʹÓÃ5V/cmµÄµçѹ½øÐеçÓ¾£¬×îºóÓÃÄý½º³ÉÏñϵͳ¹Û²ìÅÄÕÕ¡£ 1.3.3 ºóȾ·¨ Í¬Ê±ÖÆ±¸ËĿ鲻¼ÓȾÁϵÄ1£¥ÇíÖ¬ÌÇÄý½º¡£´ýÄý½ºÀäÈ´Äý¹Ìºó£¬·ÅÈëͬһµçÓ¾²ÛÖС£ÓÚ²»Í¬Ó¾µÀÖзֱð¼ÓÈë0.5 ng¡¢1 ng¡¢2 ng¡¢5 ng¡¢10 ng¡¢20 ng¼°50 ngµÄDL 15 000£«2 000.ʹÓÃ5V/cmµÄµçѹ½øÐеçÓ¾¡£µçÓ¾ºó½«Äý½º·Ö±ð½þÈëÓÃ1¡ÁTAEÏ¡Ê͵Ä4ÖÖ²»Í¬È¾ÒºÖС£°´ÕÕ˵Ã÷ÊéÒªÇó£¬GoldViewna II¡¢GoldView¡¢DNA Green¼°EB±Ü¹âȾɫµÄʱ¼ä·Ö±ðΪ60 min¡¢30 min¡¢30 min¡¢30 min.DNA GreenȾɫÍê±Ïºó»¹ÐèÓÃ1¡ÁTAEÍÑÉ«30 min.×îºóÓÃÄý½º³ÉÏñϵͳ¹Û²ìÅÄÕÕ¡£ 2 ½á¹ûÓë·ÖÎö 2.1 Ⱦ½º·¨ Ⱦ½º·¨µÄ½á¹û£¨Í¼1£©±íÃ÷ËÄÖÖȾÁÏʹÓø÷¨µÄÁéÃô¶È¾ù×î¸ß£¬ÆäÖÐGoldViewna IIÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª0.5 ng£»EBÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª1 ng£»GoldViewÓëDNA GreenÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª2 ng. 2.2 ºóȾ·¨ ºóȾ·¨µÄ½á¹û£¨Í¼2£©±íÃ÷ËÄÖÖȾÁÏʹÓø÷¨µÄÁéÃô¶ÈµÍÓÚȾ½º·¨¡£ÆäÖÐGoldViewna IIÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª1ng£»EBÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª2 ng£»DNA GreenÓëGoldViewÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª5 ng.ͼ2 ʹÓúóȾ·¨±È½Ï4ÖÖºËËáȾÁÏȾɫDNAµÄÁéÃô¶È 2.3 ȾÑùÆ··¨ ȾÑùÆ··¨µÄ½á¹û£¨Í¼3£©±íÃ÷ËÄÖÖȾÁÏʹÓø÷¨µÄÁéÃô¶È×îµÍ¡£ÆäÖÐGoldViewna IIÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª2 ng£»EBÓëDNA GreenÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª5 ng¡¢GoldViewÄܼì²âµ½µÄDNAº¬Á¿Ô¼Îª10 ng. 3 ÌÖÂÛ GoldViewna IIÊǹúÄÚ½üÄêÀ´ÍƳöµÄÐÂÐͺËËáȾÁÏ£¬ÓëSYBR Green IͬÊô»¨ÇàÀàȾÁÏ¡£SYBR Green IÊǼ¸ÄêÇ°ÍÆ³öµÄÒ»ÖÖ¸ßÁéÃô¶È£Û3£ÝÇÒ²»¾ßÓÐÇ¿ÖÂÍ»±äÐÔ£Û4£ÝµÄºËËáȾÁÏ£¬µ«ÓÉÓÚÆä¸ß°ºµÄ¼Û¸ñÏÞÖÆÁËËüµÄ¹ã·ºÊ¹Óá£ÉÏÊöʵÑé±íÃ÷GoldViewna IIµÄÁéÃô¶È¸ß£¬Í¬Ê±¾ßÓл¨ÇàÀàȾÁϲ»¾ßÇ¿ÖÂÍ»±äÐÔµÄÓŵ㣬¼Û¸ñÒ²±ÈSYBR Green I±ãÒËÊý±¶¡£ËäÈ»ÆäÎȶ¨ÐÔ²»ÈçEB£Û3£ÝÇÒ·´¸´¶³ÈÚЧ¹û±ä²î£¬µ«Ö»ÐèÒª-20¡æ±Ü¹â±£´æºÍ·ÖװʹÓü´¿É¡£ DNA GreenÊǹúÄÚ×î½ü²ÅÍÆ³öµÄÐÂÐͺËËáȾÁÏ¡£ËüµÄÁéÃô¶ÈÓëEBÏ൱µ«±³¾°ÂÔ¸ßÓÚEB£¬µ«¸ÃȾÁϵļ۸ñ±ÈGoldViewna II»¹±ãÒËÇÒÎȶ¨ÐԱȽϺã¬4¡æ±Ü¹â±£´æ¼´¿É¡£ GoldViewÊǹúÄÚ½ÏÔçʹÓõÄÐÂÐͺËËáȾÁÏ£¬ËüµÄÁéÃô¶È±ÈEBÂÔµÍÇÒ±³¾°Ì«¸ß¡£²»ÊʺÏ×ö΢Á¿µÄDNA¼ì²â¡£µ«¸ÃȾÁÏÎȶ¨ÐÔÒ²±È½ÏºÃ£¬4¡æ±Ü¹â±£´æ¼´¿É£¬¼Û¸ñÊÇÕâÈýÖÖȾÁÏÖÐ×î±ãÒ˵ġ£ ÕâЩÐÂÐͺËËáȾÁϾù¿ÉÌæ´úEB¹ã·ºÊ¹Ó㬴Ӷø¼õÉÙ´óÁ¿Ê¹ÓÃEB¶ÔÈËÌåµÄΣº¦ºÍ¶Ô»·¾³µÄÎÛȾ¡£Ê¹ÓÃÕß¿ÉÒÔ¸ù¾Ý×Ô¼ºµÄÐèҪѡÔñºÏÊʵÄȾÁÏ¡£ Ⱦɫ·½·¨±È½Ï¿ÉÒÔ¿´³ö£ºÈ¾½º·¨µÄ¼ì²âÁéÃô¶È×î¸ß£»ºóȾ·¨µÄ¼ì²âÁéÃô´ÎÖ®£»È¾ÑùÆ··¨µÄ¼ì²âÁéÃô¶È×îµÍ£¬²»ÊʺÏ×ö΢Á¿DNA¼ì²â¡£´ËÍ⣬ºóȾ·¨ÓÃÓÚÐÂÐͺËËáȾÁϺܲ»ºÏÊÊ¡£»¨ÇàÀàȾÁÏÓÃÓÚºóȾ·¨ÐèÒª½«È¾ÁÏÓÃ1¡ÁµÄµçÓ¾»º³åҺϡÊ͵½¾Û±ûÏ©ÈÝÆ÷ÖУ¬ÔڱܹâÌõ¼þϸÃÈÜÒº×î¶à¿ÉÒÔÔÚ24СʱÄÚ±»Ê¹ÓÃÇÒȾ2¡«3¿éÄý½ººóÆäÁéÃô¶È»á½µµÍ£¬½á¹ûÂÔ¡£ÕâÑùµÄ½á¹ûµ¼ÖÂȾÁϵľ޴óÏûºÄ£¬³É±¾Ì«¸ß¡£DNA GreenÓÃÓÚºóȾµÄ¹¤×÷Ũ¶ÈΪ10¡Á£¬Ò²¾ÍÊÇȾÁÏÓÃÁ¿Ìá¸ß10±¶¼´³É±¾Ôö¼Ó10±¶£¬¶øÇÒÔÚȾɫ°ëСʱºó£¬ÓÉÓÚÆä¸ß±³¾°»¹ÐèÒªÍÑÉ«°ëСʱ£¬ÑÓ³¤ÁËʵÑéʱ¼ä¡£¼ÈÍùÓÐÑо¿ÍƼöʹÓúóȾ·¨µÄÔÒòÊÇȾɫµÄDNA´øÐÍÆ½Ö±²»Å¤Çú£Û2£Ý¡£ÎÒÃǵÄʵ¼ù¾ÑéµÃ³ö£¬µçӾʱ¿ØÖƺÏÊʵĵçѹºÍÉÏÑùÁ¿£¬ÐÂÐͺËËáȾÁÏʹÓÃȾ½º·¨Ò²ÄܴﵽͬÑùЧ¹û¡£¹ÊʹÓÃÐÂÐͺËËáȾÁÏȾɫDNAÊ±ÍÆ¼ö²ÉÓÃȾ½º·¨¡£ ¡¾²Î¿¼ÎÄÏס¿ £Û1£ÝLunn G, Sansone EB.Ethidium bromide:destruction and decontamination of solutions£ÛJ£Ý.Anal Biochem,1987,162 (2):453-458. £Û2£ÝÍõÁÖ¹û,½¯ÁáÑÞ.2ÖÖºËËáȾɫ·½·¨µÄ±È½Ï£ÛJ£Ý.ÉúÎï¼¼ÊõͨѶ,2006,11(17):924-926. £Û3£ÝKarlsen F, Steen HB, Nesland JM.SYBR green I DNA staining increases the detection sensitivity of viruses by polymerase chain reaction£ÛJ£Ý.J Virol Methods,2002,55(1):153-156. £Û4£ÝSinger VL, Lawlor TE,Yue S.Comparison of SYBR Green I nucleic acid gel stain mutagenicity and ethidium bromide mutagenicity in the Salmonella/mammalian microsome reverse mutation assay(Ames test)£ÛJ£Ý.Mutat Res,2002,439(1):37-47. [ Last edited by HarveyWang on 2009-10-2 at 10:10 ] |

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