BMC Med:维生素D是怎么做到抗肿瘤的?与转录组变化有关!

2021-08-07 MedSci原创 MedSci原创

较高的血浆25-OHD与直肠粘膜基因表达模式相关,与抗肿瘤作用一致,而且这种有益的特征是由短期维生素D补充剂引起的。

维生素D的缺乏与几种常见癌症的风险有关,其中最有力的证据是有关维生素D与结肠直肠癌(CRC)之间的联系。然而,因果关系尚未得到令人信服的证明,因为现有的观察性证据可能会受到几个潜在混杂因素的影响。

与CRC相关的环境风险因素也与维生素D有关(即共同因果关系;如身体活动),而CRC或其治疗本身可能降低血浆维生素D水平(即反向因果关系)。然而,最近的一项随机对照试验(RCT)报告了补充维生素D、维生素D受体基因型和RCR风险之间的关联,支持有益效果可能是因果关系的前提。

同时,维生素D相关的遗传变异已被证明会影响25-OHD水平和CRC生存率之间的关联,最近一项RCT数据的meta分析强烈支持维生素D补充对CRC死亡率的因果效应。

据报道,相对于正常结直肠组织,CRC和腺瘤组织的基因表达存在差异,参与代谢、转录和翻译以及细胞过程的基因普遍发生改变。因此,在维生素D状态或补充的情况下调查结直肠的基因表达可能会对CRC和维生素D之间的关系提供新的见解。

为了确定口服维生素D是否能诱导人类直肠上皮细胞的有益基因表达效果,并确定反应的生物标志物,来自英国爱丁堡大学肿瘤研究中心的专家开展了相关研究,结果发表在最新的BMC Medicine杂志上。

研究人员对191名受试者的血液和直肠粘膜进行采样,将粘膜基因表达(HT12)与血浆维生素D(25-OHD)相关联,以确定不同表达的基因。然后给50名受试者口服3200IU/天的维生素D3,12周后重新取样匹配的血液/粘膜。

试验设计简图

随后对补充维生素D后的转录组变化(HT12/RNAseq)进行了检测。为了确定粘膜反应的血液生物标志物,研究人员进行了AUC曲线绘制,并在一个独立的补充试验(BEST-D)中测试了生物标志物的可重复性。

结果显示,629个基因与25-OHD水平相关,其中453个GO-term过程有显著意义。在整个干预队列中,维生素D补充剂丰富了优先考虑的粘膜基因组和相应的GO通路,突出了与抗肿瘤作用一致的基因表达模式。

在SCOVIDS和BEST-D试验中,补充前后的血液HIPK2和PPP1CC的表达,以及生物标志物效用的ROC曲线

然而,只有9名参与者(18%)对补充营养表现出明显的反应。HIPK2和PPP1CC的表达变化作为粘膜转录组反应的血液生物标志物(AUC=0.84 [95%CI 0.66-1.00]),并在BEST-D试验对象中得到复制(HIPK2 AUC=0.83 [95%CI 0.77-0.89] ;PPP1CC AUC=0.91 [95%CI 0.86-0.95])。

综上,较高的血浆25-OHD与直肠粘膜基因表达模式相关,与抗肿瘤作用一致,而且这种有益的特征是由短期维生素D补充剂引起的。

 

参考文献:

Oral vitamin D supplementation induces transcriptomic changes in rectal mucosa that are linked to anti-tumour effects. BMC Med 19, 174 (2021). https://doi.org/10.1186/s12916-021-02044-y

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  5. [GetPortalCommentsPageByObjectIdResponse(id=1975115, encodeId=94eb19e5115e6, content=<a href='/topic/show?id=f145355379' target=_blank style='color:#2F92EE;'>#BMC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3553, encryptionId=f145355379, topicName=BMC)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/101173734/363C99735735B7F4CB11D5F78F580525/100, createdBy=aab22500211, createdName=ms3025846204744509, createdTime=Fri Oct 22 01:37:18 CST 2021, time=2021-10-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1747438, encodeId=262f1e47438c1, content=<a href='/topic/show?id=832e93345c3' target=_blank style='color:#2F92EE;'>#转录#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93345, encryptionId=832e93345c3, topicName=转录)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=58df35929710, createdName=mjldent, createdTime=Mon Sep 06 15:37:18 CST 2021, time=2021-09-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1420219, encodeId=154b1420219dd, content=<a href='/topic/show?id=5f3a9336904' target=_blank style='color:#2F92EE;'>#转录组#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93369, encryptionId=5f3a9336904, topicName=转录组)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2c9e3571203, createdName=marlenexl, createdTime=Mon Aug 09 12:37:18 CST 2021, time=2021-08-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1611208, encodeId=f6b9161120879, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Mon Aug 09 12:37:18 CST 2021, time=2021-08-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1006006, encodeId=a4e91006006ee, content=短期有作用,长期有没有相关研究呢, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=a4d25495309, createdName=种花keke, createdTime=Sun Aug 08 11:27:42 CST 2021, time=2021-08-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1005905, encodeId=3595100590551, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c64f2161070, createdName=12030b8cm66暂无昵称, createdTime=Sat Aug 07 22:34:13 CST 2021, time=2021-08-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1005899, encodeId=b61f10058993c, content=维生素D的缺乏与几种常见癌症的风险有关,其中最有力的证据是有关维生素D与结肠直肠癌(CRC)之间的联系。, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=bd984965877, createdName=1453df99m58暂无昵称, createdTime=Sat Aug 07 22:10:42 CST 2021, time=2021-08-07, status=1, ipAttribution=)]
    2021-08-08 种花keke

    短期有作用,长期有没有相关研究呢

    0

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    2021-08-07 12030b8cm66暂无昵称

    学习了

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1975115, encodeId=94eb19e5115e6, content=<a href='/topic/show?id=f145355379' target=_blank style='color:#2F92EE;'>#BMC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3553, encryptionId=f145355379, topicName=BMC)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdqq.qlogo.cn/qqapp/101173734/363C99735735B7F4CB11D5F78F580525/100, createdBy=aab22500211, createdName=ms3025846204744509, createdTime=Fri Oct 22 01:37:18 CST 2021, time=2021-10-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1747438, encodeId=262f1e47438c1, content=<a href='/topic/show?id=832e93345c3' target=_blank style='color:#2F92EE;'>#转录#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=48, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93345, encryptionId=832e93345c3, topicName=转录)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=58df35929710, createdName=mjldent, createdTime=Mon Sep 06 15:37:18 CST 2021, time=2021-09-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1420219, encodeId=154b1420219dd, content=<a href='/topic/show?id=5f3a9336904' target=_blank style='color:#2F92EE;'>#转录组#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=93369, encryptionId=5f3a9336904, topicName=转录组)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=2c9e3571203, createdName=marlenexl, createdTime=Mon Aug 09 12:37:18 CST 2021, time=2021-08-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1611208, encodeId=f6b9161120879, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=31, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Mon Aug 09 12:37:18 CST 2021, time=2021-08-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1006006, encodeId=a4e91006006ee, content=短期有作用,长期有没有相关研究呢, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=/v1.0.0/img/user_icon.png, createdBy=a4d25495309, createdName=种花keke, createdTime=Sun Aug 08 11:27:42 CST 2021, time=2021-08-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1005905, encodeId=3595100590551, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c64f2161070, createdName=12030b8cm66暂无昵称, createdTime=Sat Aug 07 22:34:13 CST 2021, time=2021-08-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1005899, encodeId=b61f10058993c, content=维生素D的缺乏与几种常见癌症的风险有关,其中最有力的证据是有关维生素D与结肠直肠癌(CRC)之间的联系。, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=bd984965877, createdName=1453df99m58暂无昵称, createdTime=Sat Aug 07 22:10:42 CST 2021, time=2021-08-07, status=1, ipAttribution=)]
    2021-08-07 1453df99m58暂无昵称

    维生素D的缺乏与几种常见癌症的风险有关,其中最有力的证据是有关维生素D与结肠直肠癌(CRC)之间的联系。

    0

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根据国家癌症研究所定义,癌症健康差定义为癌症测量的不利差异,如发病率、死亡率和存活率。鉴于癌症健康差异对个人、社会和经济的重大影响,临床上越来越迫切地需要了解和解决这种差异。

最新研究:每天4杯咖啡,癌症复发和死亡风险降低32%!但有一种类型的咖啡不行......

IJC:每日饮用>4杯咖啡,结直肠癌的复发风险降低32%。而饮用咖啡同样能够降低结直肠癌患者的全因死亡风险,与先前的研究一致,每日饮用3-5杯咖啡为最佳。

Genes & Diseases:Cao JM/Wang DP教授团队:PRKACA蛋白质修饰在结直肠癌中的作用

该研究揭示了Kcr在结直肠癌中的关键作用。这些发现为结直肠癌的早期发现和创新治疗策略提供了新的可能途径。

曲妥珠单抗联合帕妥珠单抗治疗HER2扩增晚期结直肠癌有效,且治疗前再次分子检测有必要

这项研究的结果证实了曲妥珠单抗联合帕妥珠单抗治疗HER2+mCRC患者的临床显著获益。