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Mutat Res:金诺芬可用于治疗BRCA1蛋白基因突变的卵巢癌

2016-01-12 MedSci MedSci原创

据发表于Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis的一项新的研究表明,金诺芬,一种含金的用于治疗类风湿性关节炎的药物,或可改善BRCA1基因突变卵巢癌患者的预后。

据发表于Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis的一项新的研究表明,金诺芬,一种含金的用于治疗类风湿性关节炎的药物,或可改善BRCA1基因突变卵巢癌患者的预后。

BRCA1是一种修复受损DNA的蛋白。如果编码该蛋白基因中有一个基因突变,那么便会导致基因编码的蛋白质量不足,从而导致损伤的基因无法修复。这便增加了影响细胞健康的概率,可进展为基因突变,成为癌细胞。

编码BRCA1的基因突变可增加乳腺癌和卵巢癌的发生风险。15-20%的卵巢癌患者存在编码BRCA1的基因突变。

既往研究也表明,编码BRCA1的基因突变的乳腺癌和卵巢癌患者可能对损伤DNA的药物更敏感——癌细胞可能更容易受这些药物的影响。

目前,金诺芬正处于用于治疗复发性上皮性卵巢癌的试验中,约90% 卵巢癌为复发性上皮性卵巢癌。

该研究的通讯作者Awadhesh Jha教授指出,利用已有的药物(如金诺芬)治疗癌症是非常有前途的,因为这些药物对机体的作用是有据可查的,。

BRCA1耗尽的癌细胞的存活率降低了37%

Prof. Jha及其同事在实验室探究了金诺芬对卵巢癌细胞生长的作用。

他们发现,与基因正常的癌细胞相比,缺乏BRCA1蛋白会使得癌细胞更容易受金诺芬的作用影响。

此外,实验室检测表明,使用金诺芬治疗缺乏BRCA1的卵巢癌细胞株,可发现癌细胞会发生更加不可修复的损伤——DNA双链断裂成不可修复的形式。

该研究中,研究人员检测了金诺芬对两种缺乏BRCA1蛋白的卵巢癌细胞——OVCAR5 和 SKOV3——的作用,并与对照组作比较。

结果发现,即使是在BRCA1蛋白耗尽之前, SKOV3细胞对金诺芬也已较为敏感,随着BRCA1的耗尽,癌细胞的存活率减少了37%,使用的金诺芬浓度为百万分之一。

同样地,与未耗尽BCRA1的癌细胞相比,使用金诺芬治疗缺乏BCRA1 的OVCAR5细胞时,可发现金诺芬可降低缺乏BCRA1 的癌细胞的存活率。

最后,Prof. Jha总结了本研究的意义:

“本研究表明金诺芬可纳入用于治疗此类卵巢癌的未来临床研究中,这或可作为使用其他并未作为化疗药物使用的可获得的药物的一个跳板。”

原始出处:

Catharine Paddock. Ovarian cancer with BRCA1 mutation may be treatable with arthritis drug. MNT, 11 January 2016.

BRCA1 deficiency increases the sensitivity of ovarian cancer cells to auranofin, Deepu Oommen et al.,Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, doi:10.1016/j.mrfmmm.2015.11.002, published online 28 November 2015.


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  3. [GetPortalCommentsPageByObjectIdResponse(id=1423292, encodeId=04a31423292c4, content=<a href='/topic/show?id=504c368e51' target=_blank style='color:#2F92EE;'>#BRCA1#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3687, encryptionId=504c368e51, topicName=BRCA1)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7a3d3767712, createdName=caobinglei8080, createdTime=Thu Jan 14 03:20:00 CST 2016, time=2016-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1593989, encodeId=938015939891c, content=<a href='/topic/show?id=63cc368459' target=_blank style='color:#2F92EE;'>#BRCA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3684, encryptionId=63cc368459, topicName=BRCA)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=918e18200218, createdName=cmj14wellington, createdTime=Thu Jan 14 03:20:00 CST 2016, time=2016-01-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=57156, encodeId=8ddf5e15687, content=含金的, beContent=null, objectType=article, channel=null, level=null, likeNumber=134, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4bfa83595, createdName=jetleo, createdTime=Thu Jan 14 00:29:00 CST 2016, time=2016-01-14, status=1, ipAttribution=)]
    2016-01-14 jetleo

    含金的

    0

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