Science advance:斑秃不再可怕——JAK抑制剂或可还你一头茂密的头发

2015-10-25 sunshine 译 MedSci原创

1

近日,据来自哥伦比亚大学的一项研究发现,抑制毛囊内处于休眠状态中的Janus激酶家族可使头发再生,该研究结果在线发表于Science Advances。

该研究提出一种称为JAK抑制剂的药物可用于头发再生,目前FDA已批准两种类型的JAK抑制剂分别用于治疗血液病(ruxolitinib)和类风性关节炎(tofacitinib)。

Christiano博士及其同事在研究因自身免疫攻击所造成的斑秃时偶然发现JAK抑制剂对毛囊的作用。

实验过程中,Christiano博士注意到,相比于内服JAK抑制剂,当给小鼠局部应用JAK抑制剂时,小鼠该部位会生长出更多的毛发,这表明JAK抑制剂或可直接作用于毛囊而不是抑制机体的免疫攻击。

通过仔细观察小鼠正常的毛囊,研究人员发现,JAK抑制剂可迅速唤醒处于休眠期的毛囊,毛囊由此可不断生长毛发而不是休眠与生长交替进行。

连续五天给予小鼠一/两种JAK抑制剂治疗,小鼠可在10天内生长出新的毛发,大大加快了毛囊的生长期,而未经JAK抑制剂治疗的小鼠则未出现毛发生长。

JAK抑制剂对小鼠毛囊的作用或许可同样适用于人类,表明JAK抑制剂可诱导新的头发再生并延长现存头发的生长。

但是,仍需要进一步观察JAK抑制剂是否可唤醒因雄激素脱发(导致男/女脱发)或其他形式脱发所致的处于休眠期的毛囊。

原始出处:

Blocking enzymes in hair follicles promotes hair growth. Science Daily, October 23, 2015.


Sivan Harel1, Claire A et al. Higgins Pharmacologic inhibition of JAK-STAT signaling promotes hair growth. Science Advances  23 Oct 2015.

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    2016-06-09 jklm09
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    2015-12-05 lyh994

    歪打正着?

    0

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    2015-10-27 jichang
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    2015-10-27 qindq
  6. [GetPortalCommentsPageByObjectIdResponse(id=1737970, encodeId=1b881e37970b3, content=<a href='/topic/show?id=0abd10215e0' target=_blank style='color:#2F92EE;'>#JAK#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=23, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10215, encryptionId=0abd10215e0, topicName=JAK)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=6e8634348903, createdName=肉我只吃一口, createdTime=Sun Dec 20 14:28:00 CST 2015, time=2015-12-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1851271, encodeId=02a018512e1f1, 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=28, 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=Thu Jun 09 01:28:00 CST 2016, time=2016-06-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=44897, encodeId=c6944489ec6, content=歪打正着?, beContent=null, objectType=article, channel=null, level=null, likeNumber=177, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/04/24/1c2dbd6706e64df33befd6663f1d6b37.jpg, createdBy=94f61661779, createdName=lyh994, createdTime=Sat Dec 05 16:43:00 CST 2015, time=2015-12-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1375108, encodeId=40c513e510832, content=<a href='/topic/show?id=2949159989d' target=_blank style='color:#2F92EE;'>#SCIE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15998, encryptionId=2949159989d, topicName=SCIE)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=17a3387, createdName=jichang, createdTime=Tue Oct 27 11:28:00 CST 2015, time=2015-10-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1468581, encodeId=3667146858146, content=<a href='/topic/show?id=7f7f443337a' target=_blank style='color:#2F92EE;'>#头发#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=44333, encryptionId=7f7f443337a, topicName=头发)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f09e6924959, createdName=qindq, createdTime=Tue Oct 27 11:28:00 CST 2015, time=2015-10-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=41460, encodeId=5bdc414601c, content=可靠吗, beContent=null, objectType=article, channel=null, level=null, likeNumber=141, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20150904/IMG55E8DB68F05883098.jpg, createdBy=e00a1631985, createdName=fengzhigu, createdTime=Tue Oct 27 08:19:00 CST 2015, time=2015-10-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=41347, encodeId=ea194134ebe, content=Tofacitinib(CP-690550)是辉瑞公司研发的一种新型口服JAK通路抑制剂。与当前多数其他RA治疗药物主要作用于细胞外靶点不同的是,tofacitinib以细胞内信号转导通路为靶点,作用于细胞因子网络的核心部分。Tofacitinib对JAK3的抑制强度是对JAK1及JAK2的5~100倍。Tofacitinib是开发用于类风湿性关节炎(rheumatoid arthritis)治疗的首创药物(first-in-class drug)。自从tofacitinib在辉瑞自己的试验室诞生以来,该药就被寄予了重磅药物的厚望,该药的成功也将为辉瑞公司备受诟病的研发业务迎来重大胜利。, beContent=null, objectType=article, channel=null, level=null, likeNumber=122, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96871613250, createdName=medcardio, createdTime=Mon Oct 26 14:30:00 CST 2015, time=2015-10-26, status=1, ipAttribution=)]
    2015-10-27 fengzhigu

    可靠吗

    0

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    2015-10-26 medcardio

    Tofacitinib(CP-690550)是辉瑞公司研发的一种新型口服JAK通路抑制剂。与当前多数其他RA治疗药物主要作用于细胞外靶点不同的是,tofacitinib以细胞内信号转导通路为靶点,作用于细胞因子网络的核心部分。Tofacitinib对JAK3的抑制强度是对JAK1及JAK2的5~100倍。Tofacitinib是开发用于类风湿性关节炎(rheumatoid arthritis)治疗的首创药物(first-in-class drug)。自从tofacitinib在辉瑞自己的试验室诞生以来,该药就被寄予了重磅药物的厚望,该药的成功也将为辉瑞公司备受诟病的研发业务迎来重大胜利。

    0

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