Biomaterials:脱发该如何治疗?毛囊移植从根本上使得脱发再生

2018-02-08 佚名 康健新视野

最近,一项技术使得这一点成为可能,研究人员可以同时成功培养了多达 5000 个毛囊胚,通过毛囊培养并移植,在裸鼠的身上成功培养出毛发。研究发表在杂志《Biomaterials》上。

脱发是“中年危机”之一,成为了很多人心里的痛,不知不觉从钻石王老五,变成了王老五。

许多脱发来自于遗传的因素,单纯利用药物治疗和调节,收效是非常有限的。

虽然脱发并不是一个危及生命的健康问题,但是它为许多人带来了困扰。随着世界范围内老龄化人口的增多,如何能够从根本上使得脱发再生是临床上治疗脱发问题的一个解决方向。科学家们一直致力于通过毛囊移植使得头发再生,从根本上治疗脱发的临床表现。

这是一种非常有效的途径,但是,其中面临着一项挑战,就是如何有效地大量制造毛囊胚(hair follicle germs ,HFGs),它是毛囊细胞的聚集体,而毛囊是供毛发生长和维持的小型器官。毛囊的形态发生是由毛囊胚上皮与间质层间的相互作用而触发的。最近,一项技术使得这一点成为可能,研究人员可以同时成功培养了多达 5000 个毛囊胚,通过毛囊培养并移植,在裸鼠的身上成功培养出毛发。研究发表在杂志《Biomaterials》上。

“大规模生产 HFGs 的关键是选择培养基的基质材料”,通讯作者、横滨国立大学教授福田康夫(Junji Fukuda)表示,“我们在培养皿底部使用了可以透氧的二甲基聚硅氧烷(PDMS),效果很好。”

这项技术实现了在体外大量培养 HFGs 的突破。团队培养了两种形成 HFGs 所必须的细胞类型,他们将上皮细胞与人 / 鼠间质细胞混悬,然后将它们培养在团队自主设计的阵列板上。3 天的培养之后,细胞初步形成了分散的单个细胞聚集体,并且在空间上彼此分离,展现了典型的 HFG 形态特征。这些可以自我排序的毛囊胚(ssHFGs)表现出了形成毛囊的能力。

能够成功培养的关键在于团队自行设计的自定义容器。容器内的基质材料为 PDMS,可以形成微孔阵列芯片,允许氧通过 PDMS 底部渗透到培养基中,这对于 ssHFGs 的形成和随后的毛发生长都是至关重要的。这项自主设计的装置使得团队可以一次培养出大量的 ssHFGs。

最终,形成的 ssHFGs 芯片通过水凝胶封装,然后移植到裸鼠的背部,形成了有空间排列的毛发。

“这个简单的方法非常的强大并且有希望。我们希望这项技术能改善人类头发再生疗法治疗脱发,如雄激素性脱发。”福田康夫教授表示。

原始出处:

Tatsuto Kageyama, Chisa Yoshimura, Dina Myasnikova, et al. Spontaneous hair follicle germ (HFG) formation in vitro, enabling the large-scale production of HFGs for regenerative medicine. Biomaterials, Volume 154, February 2018, Pages 291-300.

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    2018-10-28 sunylz
  3. [GetPortalCommentsPageByObjectIdResponse(id=2049991, encodeId=1a09204999104, content=<a href='/topic/show?id=cbdd3451e3' target=_blank style='color:#2F92EE;'>#Biomaterials#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=33, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3451, encryptionId=cbdd3451e3, topicName=Biomaterials)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d8e0333, createdName=zhangyxzsh, createdTime=Tue Oct 16 11:59:00 CST 2018, time=2018-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1917925, encodeId=d758191e925c6, content=<a href='/topic/show?id=4f26341994' target=_blank style='color:#2F92EE;'>#Bio#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=40, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=3419, encryptionId=4f26341994, topicName=Bio)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=12de429, createdName=sunylz, createdTime=Sun Oct 28 18:59:00 CST 2018, time=2018-10-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=286995, encodeId=ebcf286995c7, content=厉害!学习了!, beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=990b2151290, createdName=177200fc66m, createdTime=Sun Feb 11 07:22:04 CST 2018, time=2018-02-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1389120, encodeId=e414138912064, content=<a href='/topic/show?id=c130636834c' target=_blank style='color:#2F92EE;'>#毛囊#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=63683, encryptionId=c130636834c, topicName=毛囊)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ca282500032, createdName=1249857fm32暂无昵称, createdTime=Sat Feb 10 02:59:00 CST 2018, time=2018-02-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=286587, encodeId=830928658e30, content=学习了感谢分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=83, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://q.qlogo.cn/qqapp/1103841572/C20CB8E4EBB36F5B821651C710BCB491/100, createdBy=18de1715848, createdName=lofter, createdTime=Fri Feb 09 20:44:30 CST 2018, time=2018-02-09, status=1, ipAttribution=)]
    2018-02-11 177200fc66m

    厉害!学习了!

    0

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    2018-02-09 lofter

    学习了感谢分享

    0

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