AGING CELL:只需给药四天,Cdc42特异性抑制剂可延长寿命

2020-08-06 MedSci原创 MedSci原创

Cdc42是一种小型RhoGTP酶,已有的研究显示,其在真核细胞中调节多种功能,包括肌动蛋白细胞骨架重组、细胞极性和细胞生长。

Cdc42是一种小型RhoGTP酶,已有的研究显示,其在真核细胞中调节多种功能,包括肌动蛋白细胞骨架重组、细胞极性和细胞生长。

Cdc42的活性在老年小鼠的多个组织中显著升高,而Cdc42活性增高的小鼠模型则呈现出过早衰老样表型,且寿命下降。这些数据表明,Cdc42的活性升高与衰老和寿命减少之间存在因果关系。

最近,研究人员发现,用Cdc42活性特异性抑制剂(CASIN)对老年(75周龄)雌性C57BL/6小鼠进行连续4天的系统性治疗,可以显著延长其平均和最大寿命。

有趣的是,无论是短期(治疗开始后第7天)还是长期(治疗开始后第35天)检测,给药之后,小鼠的体重、白细胞计数(WBC)、红细胞计数(RBC),以及PB中髓细胞和淋巴细胞的频率和数量都没有变化。

已有的研究显示,小鼠和人类的衰老与炎症细胞因子浓度的普遍改变有关,被称为炎症化或衰老相关免疫重塑(AAIR)。研究人员也进行了细胞因子阵列分析,以研究老年小鼠血清中的衰老相关炎症细胞因子受CASIN治疗影响的程度。

数据显示,小鼠衰老时INFγ、IL-1β和IL-1α的浓度明显增加,而CASIN处理老年小鼠后,这些细胞因子的浓度与年轻动物的浓度相似 

此外,根据血细胞中DNA甲基化水平,小鼠的表观遗传年龄也明显年轻化。

总的来说,该数据表明,CASIN的系统性给药可以降低老年小鼠的Cdc42活性,并延长小鼠的寿命。

 

原始出处:

Maria Carolina Florian et al. Inhibition of Cdc42 activity extends lifespan and decreases circulating inflammatory cytokines in aged female C57BL/6 mice, AGING CELL (2020). DOI: https://doi.org/10.1111/acel.13208

 

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    2020-08-29 jklm09
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    2020-09-16 维他命
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1852456, encodeId=e34b185245630, content=<a href='/topic/show?id=f0a254918f0' target=_blank style='color:#2F92EE;'>#抑制剂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54918, encryptionId=f0a254918f0, topicName=抑制剂)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=44a360, createdName=jklm09, createdTime=Sat Aug 29 18:51:01 CST 2020, time=2020-08-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1798048, encodeId=82091e980483c, content=<a href='/topic/show?id=c1ba6e95292' target=_blank style='color:#2F92EE;'>#特异性抑制剂#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67952, encryptionId=c1ba6e95292, topicName=特异性抑制剂)], attachment=null, authenticateStatus=null, createdAvatar=https://thirdwx.qlogo.cn/mmopen/vi_32/DYAIOgq83eqPdWFricgmt6Dde2ptNxJzD6Y9c4cxpXdTo4pNlVPARAnFdKu6nWIPele9icxApTaFgibq0uVlgRiceQ/132, createdBy=4b8c2500026, createdName=ms8435843352634314, createdTime=Sat Aug 29 11:51:01 CST 2020, time=2020-08-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1899413, encodeId=1682189941333, content=<a href='/topic/show?id=6f746e94170' target=_blank style='color:#2F92EE;'>#特异性#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67941, encryptionId=6f746e94170, topicName=特异性)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=dc7a157, createdName=jinweidong, createdTime=Sun Jan 31 15:51:01 CST 2021, time=2021-01-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1962193, encodeId=cec419621931d, content=<a href='/topic/show?id=dbe6445416' target=_blank style='color:#2F92EE;'>#CEL#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4454, encryptionId=dbe6445416, topicName=CEL)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=c3ff68, createdName=维他命, createdTime=Wed Sep 16 12:51:01 CST 2020, time=2020-09-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1871894, encodeId=94bf18e1894d8, content=<a href='/topic/show?id=fd764459a8' target=_blank style='color:#2F92EE;'>#Cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Nov 16 07:51:01 CST 2020, time=2020-11-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1479882, encodeId=6d6e14e98824e, content=<a href='/topic/show?id=456b4954350' target=_blank style='color:#2F92EE;'>#延长寿命#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=49543, encryptionId=456b4954350, topicName=延长寿命)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d9587588723, createdName=hittouch, createdTime=Sat Aug 08 04:51:01 CST 2020, time=2020-08-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1558456, encodeId=c28a1558456f5, content=<a href='/topic/show?id=1c59438679' target=_blank style='color:#2F92EE;'>#CDC42#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4386, encryptionId=1c59438679, topicName=CDC42)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=23db14986201, createdName=hongbochen, createdTime=Sat Aug 08 04:51:01 CST 2020, time=2020-08-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1564465, encodeId=4726156446569, content=<a href='/topic/show?id=1c59438679' target=_blank style='color:#2F92EE;'>#CDC42#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4386, encryptionId=1c59438679, topicName=CDC42)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=23db14986201, createdName=hongbochen, createdTime=Sat Aug 08 04:51:01 CST 2020, time=2020-08-08, status=1, ipAttribution=)]
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    2020-08-08 hongbochen
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    2020-08-08 hongbochen

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