Nucleic Acids Res:简化ChIP分析的新方法

2015-04-23 佚名 生物通

最近,美国普渡大学的研究人员开发出一种方法,称为ZipChip,可大大降低ChIP分析的时间和成本,同时还能提高灵敏度。染色质免疫沉淀(ChIP)研究,对于染色质相关蛋白和组蛋白修饰在基因组中的定位,提供了深入的见解。然而,标准的ChIP方法耗时、昂贵、费力,由于涉及大量的步骤,易受实验误差的影响。此外,全基因组ChIP研究产生了大量的数据,因此迫切需要某种方法,能够进行快速验证以及生物相关性分析

最近,美国普渡大学的研究人员开发出一种方法,称为ZipChip,可大大降低ChIP分析的时间和成本,同时还能提高灵敏度。

染色质免疫沉淀(ChIP)研究,对于染色质相关蛋白和组蛋白修饰在基因组中的定位,提供了深入的见解。然而,标准的ChIP方法耗时、昂贵、费力,由于涉及大量的步骤,易受实验误差的影响。此外,全基因组ChIP研究产生了大量的数据,因此迫切需要某种方法,能够进行快速验证以及生物相关性分析。

为了克服这些挑战,研究人员最近开发出一种方法,称为ZipChIP,可大大降低ChIP分析的时间和成本。相关研究结果发表在最近的Nucleic Acids Research杂志。本文资深研究作者、普渡大学的Scott Briggs 指出:“ZipChIP的开发是很重要的,因为它将复杂的ChIP程序简化为一个简单的‘一下午实验’,可进行染色质相关蛋白的快速分析。”
 
该方法也提高了灵敏度,能够检测染色质相关蛋白和组蛋白翻译后修饰,这在以前是很难或几乎不可能检测到的。根据作者介绍,ZipChIP将是一种有用的工具,可用于各种实验室,有助于染色质和DNA模板化过程的研究。

相比较其他ChIP方法,ZipChIP需要较少的试剂和步骤。此外,研究人员优化了程序,可允许在qRT-PCR的微珠PCR反应中使用磁珠,从而带来更好的灵敏度。研究人员使用ZipChIP检测到了组蛋白修饰和两个酵母组蛋白去甲基化酶——Jhd2和Rph1,在以前用标准方法是难以检测的。
 
分析结果表明,在积极转录的基因上至少有两种H3K4模式。本文第一作者Kayla Harmeyer说:“这是令人惊讶的,因为只有一个主要的H3K4模式被报道过。这些富集模式的生物学意义是未知的,但现在这些问题得到了解决。”

研究还表明,这种多功能方法可用于酵母和拟南芥的更复杂的基因组。研究结果表明,ZipChIP还可以应用于一些生物,如斑马鱼,果蝇和哺乳动物细胞。Briggs说:“我们的初步数据表明,ZipChIP也对哺乳动物细胞起作用。然而,该方法的主要缺点是,本程序是用于基因特异性的分析。接下来,研究人员将优化ZipChIP,用于全基因组的研究。”

原始出处:

Kayla M. Harmeyer, Paul F. South, Brett Bishop, Joe Ogas and Scott D. Briggs*.Immediate chromatin immunoprecipitation and on-bead quantitative PCR analysis: a versatile and rapid ChIP procedure.Nucl. Acids Res. March 31, 2015, 43(6): e38.doi: 10.1093/nar/gku1347

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1903086, encodeId=1a46190308627, content=<a href='/topic/show?id=e1b0583884b' target=_blank style='color:#2F92EE;'>#新方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58388, encryptionId=e1b0583884b, topicName=新方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c22f171, createdName=kord1982, createdTime=Fri May 15 05:55:00 CST 2015, time=2015-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1911412, encodeId=47b41911412c9, content=<a href='/topic/show?id=dbda185590' target=_blank style='color:#2F92EE;'>#acid#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1855, encryptionId=dbda185590, topicName=acid)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7ca4300, createdName=wodejia-dayu, createdTime=Wed Dec 30 16:55:00 CST 2015, time=2015-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1991570, encodeId=d12a19915e036, content=<a href='/topic/show?id=f88a4e047f' target=_blank style='color:#2F92EE;'>#CID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4704, encryptionId=f88a4e047f, topicName=CID)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=570f404, createdName=xlxchina, createdTime=Mon Jan 25 22:55:00 CST 2016, time=2016-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21873, encodeId=5122218e3a5, content=值得参考, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08fc1622451, createdName=chudiyang03, createdTime=Fri Apr 24 12:51:00 CST 2015, time=2015-04-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21733, encodeId=af6e21e33f4, content=了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=121, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=63461620684, createdName=yuena, createdTime=Thu Apr 23 10:46:00 CST 2015, time=2015-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21723, encodeId=257f21e2395, content=应该学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=hbwang006, createdTime=Thu Apr 23 10:33:00 CST 2015, time=2015-04-23, status=1, ipAttribution=)]
    2015-12-30 wodejia-dayu
  3. [GetPortalCommentsPageByObjectIdResponse(id=1903086, encodeId=1a46190308627, content=<a href='/topic/show?id=e1b0583884b' target=_blank style='color:#2F92EE;'>#新方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58388, encryptionId=e1b0583884b, topicName=新方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c22f171, createdName=kord1982, createdTime=Fri May 15 05:55:00 CST 2015, time=2015-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1911412, encodeId=47b41911412c9, content=<a href='/topic/show?id=dbda185590' target=_blank style='color:#2F92EE;'>#acid#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1855, encryptionId=dbda185590, topicName=acid)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7ca4300, createdName=wodejia-dayu, createdTime=Wed Dec 30 16:55:00 CST 2015, time=2015-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1991570, encodeId=d12a19915e036, content=<a href='/topic/show?id=f88a4e047f' target=_blank style='color:#2F92EE;'>#CID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4704, encryptionId=f88a4e047f, topicName=CID)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=570f404, createdName=xlxchina, createdTime=Mon Jan 25 22:55:00 CST 2016, time=2016-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21873, encodeId=5122218e3a5, content=值得参考, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08fc1622451, createdName=chudiyang03, createdTime=Fri Apr 24 12:51:00 CST 2015, time=2015-04-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21733, encodeId=af6e21e33f4, content=了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=121, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=63461620684, createdName=yuena, createdTime=Thu Apr 23 10:46:00 CST 2015, time=2015-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21723, encodeId=257f21e2395, content=应该学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=hbwang006, createdTime=Thu Apr 23 10:33:00 CST 2015, time=2015-04-23, status=1, ipAttribution=)]
    2016-01-25 xlxchina
  4. [GetPortalCommentsPageByObjectIdResponse(id=1903086, encodeId=1a46190308627, content=<a href='/topic/show?id=e1b0583884b' target=_blank style='color:#2F92EE;'>#新方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58388, encryptionId=e1b0583884b, topicName=新方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c22f171, createdName=kord1982, createdTime=Fri May 15 05:55:00 CST 2015, time=2015-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1911412, encodeId=47b41911412c9, content=<a href='/topic/show?id=dbda185590' target=_blank style='color:#2F92EE;'>#acid#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1855, encryptionId=dbda185590, topicName=acid)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7ca4300, createdName=wodejia-dayu, createdTime=Wed Dec 30 16:55:00 CST 2015, time=2015-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1991570, encodeId=d12a19915e036, content=<a href='/topic/show?id=f88a4e047f' target=_blank style='color:#2F92EE;'>#CID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4704, encryptionId=f88a4e047f, topicName=CID)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=570f404, createdName=xlxchina, createdTime=Mon Jan 25 22:55:00 CST 2016, time=2016-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21873, encodeId=5122218e3a5, content=值得参考, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08fc1622451, createdName=chudiyang03, createdTime=Fri Apr 24 12:51:00 CST 2015, time=2015-04-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21733, encodeId=af6e21e33f4, content=了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=121, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=63461620684, createdName=yuena, createdTime=Thu Apr 23 10:46:00 CST 2015, time=2015-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21723, encodeId=257f21e2395, content=应该学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=hbwang006, createdTime=Thu Apr 23 10:33:00 CST 2015, time=2015-04-23, status=1, ipAttribution=)]
    2015-04-24 chudiyang03

    值得参考

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1903086, encodeId=1a46190308627, content=<a href='/topic/show?id=e1b0583884b' target=_blank style='color:#2F92EE;'>#新方法#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=32, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58388, encryptionId=e1b0583884b, topicName=新方法)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c22f171, createdName=kord1982, createdTime=Fri May 15 05:55:00 CST 2015, time=2015-05-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1911412, encodeId=47b41911412c9, content=<a href='/topic/show?id=dbda185590' target=_blank style='color:#2F92EE;'>#acid#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1855, encryptionId=dbda185590, topicName=acid)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7ca4300, createdName=wodejia-dayu, createdTime=Wed Dec 30 16:55:00 CST 2015, time=2015-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1991570, encodeId=d12a19915e036, content=<a href='/topic/show?id=f88a4e047f' target=_blank style='color:#2F92EE;'>#CID#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4704, encryptionId=f88a4e047f, topicName=CID)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=570f404, createdName=xlxchina, createdTime=Mon Jan 25 22:55:00 CST 2016, time=2016-01-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21873, encodeId=5122218e3a5, content=值得参考, beContent=null, objectType=article, channel=null, level=null, likeNumber=124, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=08fc1622451, createdName=chudiyang03, createdTime=Fri Apr 24 12:51:00 CST 2015, time=2015-04-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21733, encodeId=af6e21e33f4, content=了解, beContent=null, objectType=article, channel=null, level=null, likeNumber=121, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=63461620684, createdName=yuena, createdTime=Thu Apr 23 10:46:00 CST 2015, time=2015-04-23, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=21723, encodeId=257f21e2395, content=应该学习学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=106, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=hbwang006, createdTime=Thu Apr 23 10:33:00 CST 2015, time=2015-04-23, status=1, ipAttribution=)]
    2015-04-23 yuena

    了解

    0

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    2015-04-23 hbwang006

    应该学习学习

    0

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