Dynabeads Q&A |
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1. Dynabeads ¹× Dynamag
2. Protein A/G beads ¹× IP, Co-IP
3. Streptavidin beads
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Dynabesd ¹× Dynamag
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Q. Dynabeads°¡ ¹º°¡¿ä?
A. Dynabeads´Â Invetrogen¿¡¼ Ãâ½ÃµÇ°í ÀÖ´Â magnetic beadÀÔ´Ï´Ù. °ÑÀÌ ¸Å²öÇÑ polystyreneÀ¸·Î µÇ¾îÀÖÀ¸¸ç, beads ³»ºÎ¿¡´Â gamma-Fe2O3¿Í Fe3O4·Î ÀÌ·ç¾îÁ® ÀÖ½À´Ï´Ù. Dynabeads´Â supeparamagnetic
beadÀ̱⠶§¹®¿¡ beads¸¸ ÀÖÀ» °æ¿ì¿£ ÀÚ±âÀåÀ» °¡ÁöÁö ¾Ê½À´Ï´Ù. ¶ÇÇÑ magnetic materialÀÌ ¿©·¯ °ãÀÇ ²®Áú·Î µÑ·¯ ½Î¿©Àֱ⠶§¹®¿¡ target moleculeÀÌ ÀÚ¼º¿¡ ¿µÇâÀ» ¹ÞÁö ¾Ê°Ô µË´Ï´Ù.
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Q. DynamagÀÇ ÀÚ¼® Á¾·ù´Â ¹«¾ùÀΰ¡¿ä? A. DynaMag´Â ÀÚ¼® Á¾·ù Áß °¡Àå ÀÚ¼ºÀÌ °ÇÑ NeodymiumÀÚ¼®ÀÔ´Ï´Ù. ÀÚ¼ºÀÌ °Çϱ⠶§¹®¿¡ bead¸¦ ªÀº ½Ã°£¿¡ È¿°úÀûÀ¸·Î ²ø¾î´ç°Ü ½ÇÇè ½Ã°£À» ´ÜÃà½ÃÄÑÁ༠target molecule¿¡ Å« ¿µÇâ ¾øÀÌ purificationÇÒ ¼ö ÀÖ°Ô µµ¿ÍÁÝ´Ï´Ù.
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Q. Dynamag¿¡´Â ¾î¶² Á¾·ùµéÀÌ ÀÖ³ª¿ä? A. 1.5ml tube¿ëÀ¸·Î´Â DynaMag-2 (12321D)¿Í DynaMag-spin
(12320D)ÀÌ ÀÖÀ¸¸ç blood collection tube³ª flow tube¿ëÀ¸·Î ³ª¿À´Â DynaMag-5,
15ml tube¿ëÀÇ DynaMag-15,
50ml tube¿ëÀÇ DynaMag-50 µîÀÌ ÀÖ½À´Ï´Ù.
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Q. DynaMag-2¿Í DynaMag-spinÀÇ Â÷ÀÌÁ¡ÀÌ ¹º°¡¿ä? A. DynaMag-2¿Í DynaMag-spinÀº µÎ Á¦Ç° ¸ðµÎ 1.5ml tube¿ëÀ̶ó´Â °øÅëÁ¡ÀÌ ÀÖ½À´Ï´Ù. ±×·¯³ª DynaMag-2 °°Àº °æ¿ì¿¡´Â ÃÑ 16°³, DynaMag-spinÀº ÃÑ 6°³ÀÇ tube°¡ µé¾î°£´Ù´Â Â÷ÀÌÁ¡ÀÌ ÀÖ½À´Ï´Ù. ¶ÇÇÑ DynaMag-2´Â ÀϹÝÀûÀÎ sample lockó·³ ¹Ù´Ú¿¡ ¼öÁ÷ÇÑ ¹æ¹ýÀ¸·Î tube°¡ °íÁ¤µÇ´Â °Í¿¡ ºñÇؼ DynaMag-spinÀº ¾à°£ »ç¼±À¸·Î tube°¡ ²ÈÈ÷´Â ¹æ½ÄÀ̱⠶§¹®¿¡ ÀûÀº ¾çÀÇ sample·Î ½ÇÇèÀ» ÇÏ½Ç ¶§ È¿°úÀûÀ̶ó´Â ÀåÁ¡ÀÌ ÀÖ½À´Ï´Ù.
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Protein A/G beads ¹× IP, Co-IP
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Q. Dynabeads Protein A¿Í Dynabeads Protein GÀÇ Â÷ÀÌÁ¡Àº ¹º°¡¿ä? A. Dynabeads Protein G¿Í Dynabeads protein A´Â protein G¿Í recombinant protein A°¡ °øÀ¯°áÇÕ µÇ¾îÀÖ´Â 2.8 micron beadsÀÔ´Ï´Ù. Protein G¿Í A´Â ´Ù¸¥ Á¾°ú subclassÀÇ immunoglobulin¿¡ °áÇÕ ¼¼±â¿¡ Â÷À̸¦ º¸ÀÔ´Ï´Ù. ÀÚ¼¼ÇÑ »çÇ×Àº selection
guide¸¦ Âü°íÇϼ¼¿ä (http://www.invitrogen.com/site/us/en/home/Products-and-Services/Applications/Protein-Expression-and-Analysis/Protein-Sample-Preparation-and-Protein-Purification/ProteinSPProteinIso-Misc/Protein-Isolation/Immunoprecipitation-using-Dynabeads-Protein-A-or-Protein-G.html)
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Q. Dynabeads·Î IP½ÇÇèÀ» ¼öÇàÇÒ ¼ö ÀÖ½À´Ï±î?
A. IP½ÇÇèÀÌ °¡´ÉÇÕ´Ï´Ù. Antibody coupling kit, Co-IP kit, pre-coated in sheep anti-mouse IgG (mouse 1¡¯ antibody¿Í ÇÔ²² »ç¿ë), pre-coated in sheep anti-rabbit IgG (rabbit 1¡¯ antibody¿Í ÇÔ²² »ç¿ë)µîÀÌ ÀÖ½À´Ï´Ù. ÀÚ¼¼ÇÑ »çÇ×Àº selection guide¸¦ Âü°íÇØÁÖ¼¼¿ä. (http://kr.invitrogen.com/site/kr/ko/home/Products-and-Services/Applications/Protein-Expression-and-Analysis/Protein-Sample-Preparation-and-Protein-Purification/ProteinSPProteinIso-Misc/Protein-Isolation/Immunoprecipitation-using-Dynabeads-Protein-A-or-Protein-G.html)
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Q. 4.5 micron
large beads¸¦ IP ½ÇÇè¿¡ »ç¿ëÇÒ ¼ö ÀÖ½À´Ï±î? A. ³×, »ç¿ë °¡´ÉÇÕ´Ï´Ù. Dynabeads anti-rat (Cat# 11035)ÀÇ °æ¿ì rat origin 1¡¯
antibody¸¦ ÀÌ¿ëÇÏ¿© »ç¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù. ±×·¸Áö¸¸ ÀÛÀº beadsµéÀÇ Ç¥¸éÀûÀÌ ´õ ³Ð±â ¶§¹®¿¡ ´õ ³ôÀº yieldÀ²À» º¸ÀÔ´Ï´Ù.
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Q. IP kit°ú Co-IP kitÀÇ Â÷ÀÌ´Â ¹º°¡¿ä? A. µÎ kitµéÀº beads¿Í kit³»ºÎ¿¡ µé¾îÀÖ´Â ±¸¼º buffer¿¡¼ Å« Â÷À̸¦ º¸ÀÔ´Ï´Ù.
ÀÏ´Ü IP kit¿¡´Â ÀϹÝÀûÀ¸·Î Àß ¾Ë°í °è½Ã´Â Dynabeads protein A ¶Ç´Â protein G°¡ µé¾îÀÖ½À´Ï´Ù. ¹Ý¸é Co-IP kit¿¡´Â M-280 Epoxy beads°¡ µé¾îÀִµ¥¿ä, M-280 Epoxy beads´Â antibody¿Í °øÀ¯°áÇÕÀ» ÅëÇØ bindingÇϱ⠶§¹®¿¡ elution ÈÄ¿¡µµ antibody°¡ beads¿Í ¶³¾îÁöÁö ¾Ê´Â´Ù´Â ÀåÁ¡À» °¡Áö°í ÀÖ½À´Ï´Ù. ¸¸¾à È®ÀÎÇϽðíÀÚ ÇÏ´Â moleculeÀÇ size°¡ antibodyÀÇ heavy/light chain°ú ºñ½ÁÇÑ size¶ó¸é (50kDa/25kDa) Co-IP kitÀ» »ç¿ëÇϽô °ÍÀÌ ÈξÀ ½ÇÇè¿¡ À¯¸®ÇÕ´Ï´Ù. ¶ÇÇÑ Co-IP kit¿¡´Â beads activation buffer¸¦ Æ÷ÇÔÇÑ ´Ù¾çÇÑ bufferµéÀÌ µé¾îÀÖ´Â °Í¿¡ ºñÇؼ IP Kit¿¡´Â antibody binding-washing buffer¿Í washing buffer°¡ µé¾îÀÖ´Ù´Â °ÍÀÌ Â÷ÀÌÁ¡ÀÔ´Ï´Ù.
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Q. Kit¿¡ µé¾îÀÖ´Â buffer¸¦ µû·Î ±¸¸ÅÇÒ ¼ö ÀÖ³ª¿ä? A. Kit ³»ºÎ¿¡ µé¾îÀÖ´Â buffer´Â µû·Î ±¸¸Å°¡ ¾î·Æ½À´Ï´Ù.
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Streptavidin beads
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Q. Biotinylated moleculeÀ» Àâ°í ½Í¾î¿ä A. Dynalbeads Á¦Ç° Áß beads Ç¥¸é¿¡ StreptavidinÀÌ coating µÇ¾îÀÖ´Â Á¦Ç°ÀÌ ÀÖ½À´Ï´Ù. ¸¸ÀÏ biotinylated moleculeÀ» Àâ°í ½ÍÀ¸½Ã´Ù¸é Streptavidin
beads¸¦ »ç¿ëÇϽô °ÍÀÌ ÁÁ½À´Ï´Ù. Streptavidin beads´Â beadsÀÇ Å©±â³ª Ư¡¿¡ µû¶ó¼ ÃÑ ³× °¡Áö beads°¡ ÀÖ½À´Ï´Ù. HydrophobicÇÑ ¼ºÁúÀ» °¡Áö´Â M-280°ú MyOne
T1 beads´Â ÁÖ·Î protein target¿¡ ÀûÀýÇϸç hydrophilicÇÑ ¼ºÁúÀ» °¡Áö´Â M-270°ú MyOne
C1 beads´Â DNA/RNA work¿¡ ´õ ÀûÇÕÇÕ´Ï´Ù. ÀÚ¼¼ÇÑ »çÇ×Àº ȨÆäÀÌÁö ³»¿ëÀ» Âü°íÇØÁÖ¼¼¿ä.
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Q. Biotinylated moleculeÀ» Àâ°í ½ÍÀºµ¥ ¾î¶² beads°¡ ÀûÀýÇÑÁö Àß ¸ð¸£°Ú¾î¿ä A. Dynabeads Streptavidin Trila KitÀ» ÃßõÇØ µå¸³´Ï´Ù. ÀÌ Á¦Ç°¿¡´Â Streptavidin MyOne C1, Myone T1, M-270, M-280 beads°¡ °¢ 1ml¾¿ µé¾îÀÖ´Â Á¦Ç°À̱⠶§¹®¿¡ ÇϽ÷Á´Â ½ÇÇè¿¡ ¾î¶² beads°¡ °¡Àå Àû´çÇÑÁö ¾Ë¾Æº¼ ¼ö ÀÖ´Ù´Â ÀåÁ¡ÀÌ ÀÖ½À´Ï´Ù.
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Q. ±æÀÌ°¡ ±ä biotinylated DNA¸¦ Àâ°í ½ÍÀºµ¥¿ä. A. Kilobase BINDER kit
(60101) Á¦Ç°À» ÃßõÇØ µå¸³´Ï´Ù. ÀÌ Á¦Ç°Àº 2kb ÀÌ»óÀÇ biotinylated
DNA³ª RNA fragment¸¦ ÀâÀ» ¼ö ÀÖ´Â Á¦Ç°ÀÔ´Ï´Ù. ÀÌ kit¿¡´Â M-280 beads¿Í ÇÔ²² binding buffer°¡ µé¾îÀִµ¥¿ä, ÀÌ binding buffer¿¡ ÀÇÇؼ ±æÀÌ°¡ ±ä fragmentµµ È¿°úÀûÀ¸·Î captureÇÒ ¼ö ÀÖ½À´Ï´Ù.
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Q. Kit¿¡ µé¾îÀÖ´Â buffer¸¦ µû·Î ±¸¸ÅÇÒ ¼ö ÀÖ³ª¿ä? A. Kit ³»ºÎ¿¡ µé¾îÀÖ´Â buffer´Â µû·Î ±¸¸Å°¡ ¾î·Æ½À´Ï´Ù.
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Q. Biotinylated antibody¸¦ ÀÌ¿ëÇؼ cell isolation ÇÑ ÈÄ¿¡ flow-cytometry ½ÇÇèÀ» ÇÏ°í ½Í½À´Ï´Ù. A. CELLection Biotin Binder
Kit (Cat# 11533D) Á¦Ç°À» ÃßõÇØ µå¸³´Ï´Ù. ÇØ´ç Á¦Ç°Àº beads¿Í antibody°¡ DNA linker·Î ¿¬°áµÇ±â ¶§¹®¿¡ DNA liker¸¦ ²÷¾îÁÖ´Â buffer¸¦ ÀÌ¿ëÇؼ beads¿Í cellÀ» ¼Õ½±°Ô ºÐ¸®ÇÒ ¼ö Àִ Ư¡ÀÌ ÀÖ½À´Ï´Ù. ¸¸ÀÏ isolationÇÑ cell°ú beads°¡ bindingµÇ¾îÀ־ »ó°ü ¾ø´Â ½ÇÇèÀ» ÁøÇàÇÏ½Ç °æ¿ì¿¡´Â Dynabeads
Biotin Binder (Cat# 11047) Á¦Ç°À» »ç¿ëÇÏ½Ç °ÍÀ» ÃßõÇØ µå¸³´Ï´Ù.
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