Stem cells:如何增加间充质干细胞对败血症的治疗功效?

2017-01-25 MedSci MedSci原创

通过用促炎细胞因子预处理来改善间充质干细胞(MSC)的免疫调节功效是一个不断发展的研究领域。然而,这一现象的基本机制尚未完全明了。近期,一项发表在Stem cells杂志上的研究使用白细胞介素-1β(IL-1β)预处理人脐带源性MSC,并评估其在盲肠结扎和穿刺(CLP)诱导的败血症模型中的治疗效果。研究者们发现,与对照MSC相比,全身施用IL-1β预处理的MSC(βMSC)更有效地改善了鼠脓毒症的

通过用促炎细胞因子预处理来改善间充质干细胞(MSC)的免疫调节功效是一个不断发展的研究领域。然而,这一现象的基本机制尚未完全明了。


近期,一项发表在Stem cells杂志上的研究使用白细胞介素-1β(IL-1β)预处理人脐带源性MSC,并评估其在盲肠结扎和穿刺(CLP)诱导的败血症模型中的治疗效果。

研究者们发现,与对照MSC相比,全身施用IL-1β预处理的MSC(βMSC)更有效地改善了鼠脓毒症的症状,并提高了存活率。此外,βMSCs可以通过旁分泌活性更有效地诱导巨噬细胞向抗炎M2表型的转化。

此外,在体外和体内研究证明βMSC衍生的外泌体有助于增强βMSCs的免疫调节特性。

重要的是,研究者们发现miR-146a,一种众所周知的抗炎miRNA,被IL-1β刺激强烈上调,并选择性地包装到外来体中。这个外来体miR-146a转移到巨噬细胞,导致M2极化,并最终导致脓毒症小鼠的生存期增加。相比之下,通过转染miR-146a抑制剂抑制miR-146a部分抵消了βMSC衍生的外来体的免疫调节特性。

总之,IL-1β预处理通过外来体介导的miR-146a转移部分有效地增强了MSC的免疫调节特性。
此项研究得出结论:IL-1β预处理可以为MSC在炎性疾病中发挥更好的治疗应用提供了一种新的方式。

原始出处:

Song Y, Dou H, Li X, et al. Exosomal miR-146a contributes to the enhanced therapeutic efficacy of IL-1β-primed mesenchymal stem cells against sepsis. Stem Cells. 2017 Jan 16. doi: 10.1002/stem.2564.

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    2017-07-30 维他命
  4. 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replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfBfgWn9nXBgH1sNSiaOAKhsKpN40jDHQKqcRzovau5VibLvREN8uxnu9sKoScBicHSiaDMmbveibFdrBiaD4k4IOPwlG/0, createdBy=b5d11730951, createdName=Jackie Li, createdTime=Fri Jan 27 08:06:41 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481959, encodeId=ad9b148195954, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16778, encryptionId=8cc416e78f3, topicName=STEM)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d1067833268, createdName=12498bb3m92(暂无昵称), createdTime=Fri Jan 27 05:45:00 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614930, encodeId=9a5e1614930f2, content=<a href='/topic/show?id=d74a44e2e7' target=_blank style='color:#2F92EE;'>#cells#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4472, encryptionId=d74a44e2e7, topicName=cells)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=659819575782, createdName=124988c7m101暂无昵称, createdTime=Fri Jan 27 05:45:00 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172679, encodeId=bcd31e267980, content=IL-1β预处理可以为MSC在炎性疾病中发挥更好的治疗应用提供了一种新的方式。, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7s7ZCKOmmbBTD6nE7gcd5OZpvyGEzkxBP3S275k5ZJVrsPkotZhBglRHM9rKvcj1OgkssqhcnoPw8zIaMZTF8c/0, createdBy=4c441942088, createdName=ylzr123, createdTime=Thu Jan 26 10:40:19 CST 2017, time=2017-01-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172611, encodeId=c2981e2611a3, content=好文章学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJiaCBO9f33YY0a9cL4rhSH23PNEOVia2szWTbUl6IgFnukCuC2ptOD5mAC0Ax8qGt2pjwudkREHlmA/132, createdBy=d39e1630897, createdName=1dd8aa01m06(暂无匿称), createdTime=Thu Jan 26 03:17:54 CST 2017, time=2017-01-26, status=1, ipAttribution=)]
  5. [GetPortalCommentsPageByObjectIdResponse(id=1815251, encodeId=264018152516b, content=<a href='/topic/show?id=ae359e231d4' target=_blank style='color:#2F92EE;'>#间充质干细#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97231, encryptionId=ae359e231d4, topicName=间充质干细)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b632500090, createdName=h.y200607_23674418, createdTime=Sat Nov 11 03:45:00 CST 2017, time=2017-11-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794457, encodeId=16961e9445779, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16779, encryptionId=82b416e79f5, topicName=stem cell)], attachment=null, authenticateStatus=null, 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topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Dec 25 17:45:00 CST 2017, time=2017-12-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794862, encodeId=651a1e9486232, content=<a href='/topic/show?id=46e716e82a6' target=_blank style='color:#2F92EE;'>#stem cells#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16782, encryptionId=46e716e82a6, topicName=stem cells)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3883266, createdName=yykkxiaodou, createdTime=Wed Mar 22 04:45:00 CST 2017, time=2017-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172809, encodeId=d2b11e280997, content=收藏, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfBfgWn9nXBgH1sNSiaOAKhsKpN40jDHQKqcRzovau5VibLvREN8uxnu9sKoScBicHSiaDMmbveibFdrBiaD4k4IOPwlG/0, createdBy=b5d11730951, createdName=Jackie Li, createdTime=Fri Jan 27 08:06:41 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481959, encodeId=ad9b148195954, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16778, encryptionId=8cc416e78f3, topicName=STEM)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d1067833268, createdName=12498bb3m92(暂无昵称), createdTime=Fri Jan 27 05:45:00 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614930, encodeId=9a5e1614930f2, content=<a href='/topic/show?id=d74a44e2e7' target=_blank style='color:#2F92EE;'>#cells#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4472, encryptionId=d74a44e2e7, topicName=cells)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=659819575782, createdName=124988c7m101暂无昵称, createdTime=Fri Jan 27 05:45:00 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172679, encodeId=bcd31e267980, content=IL-1β预处理可以为MSC在炎性疾病中发挥更好的治疗应用提供了一种新的方式。, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7s7ZCKOmmbBTD6nE7gcd5OZpvyGEzkxBP3S275k5ZJVrsPkotZhBglRHM9rKvcj1OgkssqhcnoPw8zIaMZTF8c/0, createdBy=4c441942088, createdName=ylzr123, createdTime=Thu Jan 26 10:40:19 CST 2017, time=2017-01-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172611, encodeId=c2981e2611a3, content=好文章学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJiaCBO9f33YY0a9cL4rhSH23PNEOVia2szWTbUl6IgFnukCuC2ptOD5mAC0Ax8qGt2pjwudkREHlmA/132, createdBy=d39e1630897, createdName=1dd8aa01m06(暂无匿称), createdTime=Thu Jan 26 03:17:54 CST 2017, time=2017-01-26, status=1, ipAttribution=)]
  6. [GetPortalCommentsPageByObjectIdResponse(id=1815251, encodeId=264018152516b, content=<a href='/topic/show?id=ae359e231d4' target=_blank style='color:#2F92EE;'>#间充质干细#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97231, encryptionId=ae359e231d4, topicName=间充质干细)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b632500090, createdName=h.y200607_23674418, createdTime=Sat Nov 11 03:45:00 CST 2017, time=2017-11-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794457, encodeId=16961e9445779, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16779, encryptionId=82b416e79f5, topicName=stem cell)], attachment=null, authenticateStatus=null, 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topicList=[TopicDto(id=4459, encryptionId=fd764459a8, topicName=Cell)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=524d95, createdName=zhaozhouchifen, createdTime=Mon Dec 25 17:45:00 CST 2017, time=2017-12-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794862, encodeId=651a1e9486232, content=<a href='/topic/show?id=46e716e82a6' target=_blank style='color:#2F92EE;'>#stem cells#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16782, encryptionId=46e716e82a6, topicName=stem cells)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=3883266, createdName=yykkxiaodou, createdTime=Wed Mar 22 04:45:00 CST 2017, time=2017-03-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172809, encodeId=d2b11e280997, content=收藏, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfBfgWn9nXBgH1sNSiaOAKhsKpN40jDHQKqcRzovau5VibLvREN8uxnu9sKoScBicHSiaDMmbveibFdrBiaD4k4IOPwlG/0, createdBy=b5d11730951, createdName=Jackie Li, createdTime=Fri Jan 27 08:06:41 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481959, encodeId=ad9b148195954, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16778, encryptionId=8cc416e78f3, topicName=STEM)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d1067833268, createdName=12498bb3m92(暂无昵称), createdTime=Fri Jan 27 05:45:00 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614930, encodeId=9a5e1614930f2, content=<a href='/topic/show?id=d74a44e2e7' target=_blank style='color:#2F92EE;'>#cells#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4472, encryptionId=d74a44e2e7, topicName=cells)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=659819575782, createdName=124988c7m101暂无昵称, createdTime=Fri Jan 27 05:45:00 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172679, encodeId=bcd31e267980, content=IL-1β预处理可以为MSC在炎性疾病中发挥更好的治疗应用提供了一种新的方式。, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7s7ZCKOmmbBTD6nE7gcd5OZpvyGEzkxBP3S275k5ZJVrsPkotZhBglRHM9rKvcj1OgkssqhcnoPw8zIaMZTF8c/0, createdBy=4c441942088, createdName=ylzr123, createdTime=Thu Jan 26 10:40:19 CST 2017, time=2017-01-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172611, encodeId=c2981e2611a3, content=好文章学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJiaCBO9f33YY0a9cL4rhSH23PNEOVia2szWTbUl6IgFnukCuC2ptOD5mAC0Ax8qGt2pjwudkREHlmA/132, createdBy=d39e1630897, createdName=1dd8aa01m06(暂无匿称), createdTime=Thu Jan 26 03:17:54 CST 2017, time=2017-01-26, status=1, ipAttribution=)]
    2017-01-27 Jackie Li

    收藏

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  7. [GetPortalCommentsPageByObjectIdResponse(id=1815251, encodeId=264018152516b, content=<a href='/topic/show?id=ae359e231d4' target=_blank style='color:#2F92EE;'>#间充质干细#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97231, encryptionId=ae359e231d4, topicName=间充质干细)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4b632500090, createdName=h.y200607_23674418, createdTime=Sat Nov 11 03:45:00 CST 2017, time=2017-11-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1794457, encodeId=16961e9445779, content=<a href='/topic/show?id=82b416e79f5' target=_blank style='color:#2F92EE;'>#stem cell#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=43, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16779, encryptionId=82b416e79f5, topicName=stem cell)], attachment=null, authenticateStatus=null, 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replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NfBfgWn9nXBgH1sNSiaOAKhsKpN40jDHQKqcRzovau5VibLvREN8uxnu9sKoScBicHSiaDMmbveibFdrBiaD4k4IOPwlG/0, createdBy=b5d11730951, createdName=Jackie Li, createdTime=Fri Jan 27 08:06:41 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1481959, encodeId=ad9b148195954, content=<a href='/topic/show?id=8cc416e78f3' target=_blank style='color:#2F92EE;'>#STEM#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=16778, encryptionId=8cc416e78f3, topicName=STEM)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d1067833268, createdName=12498bb3m92(暂无昵称), createdTime=Fri Jan 27 05:45:00 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1614930, 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  8. 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  9. 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encodeId=9a5e1614930f2, content=<a href='/topic/show?id=d74a44e2e7' target=_blank style='color:#2F92EE;'>#cells#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=4472, encryptionId=d74a44e2e7, topicName=cells)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=659819575782, createdName=124988c7m101暂无昵称, createdTime=Fri Jan 27 05:45:00 CST 2017, time=2017-01-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172679, encodeId=bcd31e267980, content=IL-1β预处理可以为MSC在炎性疾病中发挥更好的治疗应用提供了一种新的方式。, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7s7ZCKOmmbBTD6nE7gcd5OZpvyGEzkxBP3S275k5ZJVrsPkotZhBglRHM9rKvcj1OgkssqhcnoPw8zIaMZTF8c/0, createdBy=4c441942088, createdName=ylzr123, createdTime=Thu Jan 26 10:40:19 CST 2017, time=2017-01-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=172611, encodeId=c2981e2611a3, content=好文章学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJiaCBO9f33YY0a9cL4rhSH23PNEOVia2szWTbUl6IgFnukCuC2ptOD5mAC0Ax8qGt2pjwudkREHlmA/132, createdBy=d39e1630897, createdName=1dd8aa01m06(暂无匿称), createdTime=Thu Jan 26 03:17:54 CST 2017, time=2017-01-26, status=1, ipAttribution=)]
    2017-01-26 ylzr123

    IL-1β预处理可以为MSC在炎性疾病中发挥更好的治疗应用提供了一种新的方式。

    0

  10. 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    2017-01-26 1dd8aa01m06(暂无匿称)

    好文章学习了

    0

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Nat Bio Eng:突破!科学家利用干细胞成功再生出心脏外层结构

图片来源:medicalxpress.com 近日,刊登在国际杂志Nature Biomedical Engineering上的一项研究报告中,来自美国宾夕法尼亚州立大学的研究人员通过研究利用干细胞成功再生出了人类心脏的心外膜细胞;研究者表示,早在2012年,williamhill asia 就发现如果能够利用化学物质处理人类干细胞,使其连续激活干细胞并且抑制Wnt信号通路,就会促进干细胞转变成为心肌细胞,心肌作

ips细胞新研究揭开遗传性耳聋成因

日本研究人员日前利用一种遗传性耳聋患者的诱导性多能干细胞(ips细胞)培养出内耳细胞,并与健康人的内耳细胞相比较,发现了这一疾病的发病机制。这一研究也有望用于寻找其他听力障碍的治疗方法。 甲状腺肿—耳聋综合征是一种少见的先天性甲状腺激素有机合成障碍性疾病,属常染色体隐性遗传,临床上以甲状腺肿大和感音性耳聋为主要特征。患者往往从小就出现听力障碍,并可能语言发育迟缓。控制合成蛋白质Pendri

Peter Thiel押注的这家黑马公司,让40年没有进展的小细胞肺癌治疗,乍现希望

大约一周前,一个大学好友突然告诉我,他父亲被诊断为肺癌。他看我朋友圈都是些重磅进展,就问我是不是知道有效的治疗方法。在一番问候之后,我问他有没有让他父亲做基因检测,他说有这个打算。然后我让他赶紧带爸爸去做,同时给他说了一堆靶向治疗药物,以及Merck的Keytruda,和罗氏的Tecentriq。他沉默了一会儿,然后告诉我他父亲患的是晚期小细胞肺癌,已经出现耐药了。小细胞肺癌!为啥偏偏是小细胞

Stem Cell Reports:失明或许有救啦:干细胞来帮您!

因终末期视网膜变性而失明的人数正在稳步上升,且目前这种病情无法逆转。然而,一项具有突破性的研究,使用干细胞技术让人们似乎看到了一线光明。晚期视网膜变性包括老年性黄斑变性和色素性视网膜炎等疾病。这是导致老年人发生不可逆性视力丧失和失明最常见原因。在此类疾病中,眼部对光敏感的细胞核层退化导致视力逐渐恶化。随着美国人口开始进入老龄化,视网膜变性的患病率逐渐在增加。例如,在 2000-2010 年间,老年

STM:糖尿病患者骨折后愈合能力差的机制被破译

根据斯坦福大学医学院的一项最新研究,一种刺激骨干细胞活性的蛋白能够让发生骨折的糖尿病小鼠恢复得更好。研究人员在糖尿病小鼠模型和糖尿病患者的骨组织样本中观察到骨干细胞活性的下降,而这种蛋白能够抵消干细胞活性的下降。他们希望这一发现能够促进开发新方法帮助糖尿病患者从骨折中更好的恢复。相关研究结果发表在国际学术期刊Science Translational Medicine上。全世界有几亿人受到

Nature:重磅!首次利用多能性干细胞培育出人胃底组织

在一项新的研究中,美国辛辛那提儿童医院医学中心多能性干细胞部门主任Jim Wells博士及其团队在培养皿中利用多能性干细胞培育出产生胃酸和消化酶的人胃底(stomach fundus)组织。相关研究结果于2017年1月4日在线发表在Nature期刊上,论文标题为“Wnt/β-catenin promotes gastric fundus specification in mice and hum