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Nature:支原体污染侵袭了多少细胞学研究?

2014-07-31 MedSci MedSci原创

每当John Hogenesch看到自己实验员的脸上布满阴云,他就知道细胞培养又出了岔子。这时他就会建议,“检查下支原体污染吧”。 在细胞研究领域,支原体是臭名昭著的污染源,许多实验室都深受其害。日前宾夕法尼亚大学的研究人员发现,支原体污染比我们想象的更加普遍。 支原体感染能在不知不觉中干扰研究结果,浪费大量的资金投入。为此,Hogenesch和Anthony


每当John Hogenesch看到自己实验员的脸上布满阴云,他就知道细胞培养又出了岔子。这时他就会建议,“检查下支原体污染吧”。

在细胞研究领域,支原体是臭名昭著的污染源,许多实验室都深受其害。日前宾夕法尼亚大学的研究人员发现,支原体污染比我们想象的更加普遍。

支原体感染能在不知不觉中干扰研究结果,浪费大量的资金投入。为此,Hogenesch和Anthony Olarerin-George进行了广泛的样本分析,他们发现目前有超过十分之一的基因表达研究(许多曾发表在顶尖杂志上),表现出支原体污染的迹象。

Hogenesch实验室去年就遇到过一次支原体污染,虽然问题很快得到解决,但仍然浪费了大约100,000美元和一年的研究。支原体一般来自于实验室工作人员,它们很快就能生根,一次小小的疏忽就可能使整个实验室的细胞受到污染。其他许多微生物污染会使培养基变得浑浊,可支原体污染完全是不留痕迹的, 而且细胞培养中常用的抗生素都杀不死支原体。

支原体一直是个令人头疼的问题。早期的HeLa细胞培养深受其害,HeLa细胞系建立于二十世纪五十年代,被广泛用于各种领域的研究。1993年的研究显示,美国FDA实验室的两万个培养物中有15%受到了支原体的污染。现在,供应细胞和试剂的公司都会进行非常严格的支原体筛查

为了全面了解支原体污染情况,Hogenesch和Olarerin-George获得了九千多份样本的RNA测序数据,这些样本来自于2012年 -2013年间哺乳动物细胞的基因表达研究。他们在测序数据中寻找支原体DNA,结果发现11%的样本都受到了支原体的污染。

Hogenesch指出,支原体DNA水平最高的一些研究,曾发表在Cell、Nature和PNAS等顶尖杂志上。虽然支原体污染并不一定意味着这些研究结果无效,但这种微生物会影响数百个基因的表达,并与细胞竞争营养阻碍细胞的生长。在其中一组受污染的数据中(淋巴瘤细胞),Hogenesch和 Olarerin-George鉴定了61个被支原体改变的基因。相关数据目前可以在bioRχiv网站上看到,Hogenesch等人很快就会将自己的发现提交给同行评议的杂志。

污染是“草率操作”的结果,德国菌种保藏中心的Hans Drexler说,“支原体并非凭空出现,是被人带到细胞培养物中的。” Drexler对这项研究的结果并不惊讶,他在2010-2013年间收到的人白血病细胞和淋巴瘤细胞中,受到支原体污染的比例也差不多是十分之一。不过这已经算是有进步了,因为二十世纪九十年代的支原体污染率是四分之一。

Drexler认为,支原体污染持续存在的根源在于,研究界的细胞系“黑市交易”,研究者们常常很随意的共享细胞培养物。他估计这类细胞系中差不多有 10%受到污染,而来自正规供应商的细胞系则不存在支原体污染。为此,他呼吁研究者们多花点钱从信誉良好的地方获取细胞系,并且对已有的细胞系进行支原体检测。

“我们必须一直保持警惕,及时清除受到支原体感染的细胞,将其中的微生物一同摧毁。” Hogenesch说。

原始出处:

Ewen Callaway. Contamination hits cell work. Nature, 29 July 2014; doi:10.1038/511518a

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    2015-03-06 liye789132251
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  5. [GetPortalCommentsPageByObjectIdResponse(id=1805004, encodeId=3adf18050048c, content=<a href='/topic/show?id=48c5e788217' target=_blank style='color:#2F92EE;'>#细胞学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77882, encryptionId=48c5e788217, topicName=细胞学)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4723380, createdName=yangcx0915, createdTime=Wed Nov 19 19:05:00 CST 2014, time=2014-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880207, encodeId=15f3188020e76, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Fri Mar 06 12:05:00 CST 2015, time=2015-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472448, encodeId=5bd314e244868, content=<a href='/topic/show?id=ba4a6436107' target=_blank style='color:#2F92EE;'>#污染#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64361, encryptionId=ba4a6436107, topicName=污染)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dfe67217539, createdName=小刀医生, createdTime=Sat Aug 02 14:05:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614708, encodeId=6b791614e086b, content=<a href='/topic/show?id=1f0a5e0662f' target=_blank style='color:#2F92EE;'>#支原体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57066, encryptionId=1f0a5e0662f, topicName=支原体)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7fb019527746, createdName=ms5906905816781247, createdTime=Sat Aug 02 14:05:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10833, encodeId=cb461083365, content=我啊啊,还有这情况, beContent=null, objectType=article, channel=null, level=null, likeNumber=175, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=1.80.240.48, createdTime=Sat Aug 02 12:34:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10832, encodeId=ee9610832f3, content=难怪细胞总是养不好! <br> <br> , beContent=null, objectType=article, channel=null, level=null, likeNumber=123, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1f8b95922, createdName=miguo, createdTime=Sat Aug 02 11:46:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10823, encodeId=d55e108231d, content=盲人摸象, beContent=null, objectType=article, channel=null, level=null, likeNumber=127, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=112.87.64.213, createdTime=Fri Aug 01 21:57:00 CST 2014, time=2014-08-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10809, encodeId=9fc91080963, content=多少科研结果真的可信?, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=dingding, createdTime=Fri Aug 01 19:22:00 CST 2014, time=2014-08-01, status=1, ipAttribution=)]
    2014-08-02 1.80.240.48

    我啊啊,还有这情况

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1805004, encodeId=3adf18050048c, content=<a href='/topic/show?id=48c5e788217' target=_blank style='color:#2F92EE;'>#细胞学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77882, encryptionId=48c5e788217, topicName=细胞学)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4723380, createdName=yangcx0915, createdTime=Wed Nov 19 19:05:00 CST 2014, time=2014-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880207, encodeId=15f3188020e76, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Fri Mar 06 12:05:00 CST 2015, time=2015-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472448, encodeId=5bd314e244868, content=<a href='/topic/show?id=ba4a6436107' target=_blank style='color:#2F92EE;'>#污染#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64361, encryptionId=ba4a6436107, topicName=污染)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dfe67217539, createdName=小刀医生, createdTime=Sat Aug 02 14:05:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614708, encodeId=6b791614e086b, content=<a href='/topic/show?id=1f0a5e0662f' target=_blank style='color:#2F92EE;'>#支原体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57066, encryptionId=1f0a5e0662f, topicName=支原体)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7fb019527746, createdName=ms5906905816781247, createdTime=Sat Aug 02 14:05:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10833, encodeId=cb461083365, content=我啊啊,还有这情况, beContent=null, objectType=article, channel=null, level=null, likeNumber=175, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=1.80.240.48, createdTime=Sat Aug 02 12:34:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10832, encodeId=ee9610832f3, content=难怪细胞总是养不好! <br> <br> , beContent=null, objectType=article, channel=null, level=null, likeNumber=123, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1f8b95922, createdName=miguo, createdTime=Sat Aug 02 11:46:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10823, encodeId=d55e108231d, content=盲人摸象, beContent=null, objectType=article, channel=null, level=null, likeNumber=127, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=112.87.64.213, createdTime=Fri Aug 01 21:57:00 CST 2014, time=2014-08-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10809, encodeId=9fc91080963, content=多少科研结果真的可信?, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=dingding, createdTime=Fri Aug 01 19:22:00 CST 2014, time=2014-08-01, status=1, ipAttribution=)]
    2014-08-02 miguo

    难怪细胞总是养不好!

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1805004, encodeId=3adf18050048c, content=<a href='/topic/show?id=48c5e788217' target=_blank style='color:#2F92EE;'>#细胞学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77882, encryptionId=48c5e788217, topicName=细胞学)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4723380, createdName=yangcx0915, createdTime=Wed Nov 19 19:05:00 CST 2014, time=2014-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880207, encodeId=15f3188020e76, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Fri Mar 06 12:05:00 CST 2015, time=2015-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472448, encodeId=5bd314e244868, content=<a href='/topic/show?id=ba4a6436107' target=_blank style='color:#2F92EE;'>#污染#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64361, encryptionId=ba4a6436107, topicName=污染)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dfe67217539, createdName=小刀医生, createdTime=Sat Aug 02 14:05:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614708, encodeId=6b791614e086b, content=<a href='/topic/show?id=1f0a5e0662f' target=_blank style='color:#2F92EE;'>#支原体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57066, encryptionId=1f0a5e0662f, topicName=支原体)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7fb019527746, createdName=ms5906905816781247, createdTime=Sat Aug 02 14:05:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10833, encodeId=cb461083365, content=我啊啊,还有这情况, beContent=null, objectType=article, channel=null, level=null, likeNumber=175, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=1.80.240.48, createdTime=Sat Aug 02 12:34:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10832, encodeId=ee9610832f3, content=难怪细胞总是养不好! <br> <br> , beContent=null, objectType=article, channel=null, level=null, likeNumber=123, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1f8b95922, createdName=miguo, createdTime=Sat Aug 02 11:46:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10823, encodeId=d55e108231d, content=盲人摸象, beContent=null, objectType=article, channel=null, level=null, likeNumber=127, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=112.87.64.213, createdTime=Fri Aug 01 21:57:00 CST 2014, time=2014-08-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10809, encodeId=9fc91080963, content=多少科研结果真的可信?, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=dingding, createdTime=Fri Aug 01 19:22:00 CST 2014, time=2014-08-01, status=1, ipAttribution=)]
    2014-08-01 112.87.64.213

    盲人摸象

    0

  8. [GetPortalCommentsPageByObjectIdResponse(id=1805004, encodeId=3adf18050048c, content=<a href='/topic/show?id=48c5e788217' target=_blank style='color:#2F92EE;'>#细胞学#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77882, encryptionId=48c5e788217, topicName=细胞学)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4723380, createdName=yangcx0915, createdTime=Wed Nov 19 19:05:00 CST 2014, time=2014-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1880207, encodeId=15f3188020e76, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Fri Mar 06 12:05:00 CST 2015, time=2015-03-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1472448, encodeId=5bd314e244868, content=<a href='/topic/show?id=ba4a6436107' target=_blank style='color:#2F92EE;'>#污染#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=64361, encryptionId=ba4a6436107, topicName=污染)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dfe67217539, createdName=小刀医生, createdTime=Sat Aug 02 14:05:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614708, encodeId=6b791614e086b, content=<a href='/topic/show?id=1f0a5e0662f' target=_blank style='color:#2F92EE;'>#支原体#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=84, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57066, encryptionId=1f0a5e0662f, topicName=支原体)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7fb019527746, createdName=ms5906905816781247, createdTime=Sat Aug 02 14:05:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10833, encodeId=cb461083365, content=我啊啊,还有这情况, beContent=null, objectType=article, channel=null, level=null, likeNumber=175, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=1.80.240.48, createdTime=Sat Aug 02 12:34:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10832, encodeId=ee9610832f3, content=难怪细胞总是养不好! <br> <br> , beContent=null, objectType=article, channel=null, level=null, likeNumber=123, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1f8b95922, createdName=miguo, createdTime=Sat Aug 02 11:46:00 CST 2014, time=2014-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10823, encodeId=d55e108231d, content=盲人摸象, beContent=null, objectType=article, channel=null, level=null, likeNumber=127, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=112.87.64.213, createdTime=Fri Aug 01 21:57:00 CST 2014, time=2014-08-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=10809, encodeId=9fc91080963, content=多少科研结果真的可信?, beContent=null, objectType=article, channel=null, level=null, likeNumber=153, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=dingding, createdTime=Fri Aug 01 19:22:00 CST 2014, time=2014-08-01, status=1, ipAttribution=)]
    2014-08-01 dingding

    多少科研结果真的可信?

    0

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