Nature子刊:生物3D打印再升级,重塑人耳!

2016-12-27 生物探索 生物探索

导读 2月15日,Nature子刊《Nature Biotechnology》在线发表一篇文章,揭示了一种最新的生物3D打印技术ITOP 。通过使用新型生物材料,该打印技术能够构建出结构稳定且具备功能的人耳器官、骨骼和肌肉组织,更重要的是这些组织器官微通道,能够维持其继续生长形成血管、软骨等系统,从而发挥功能。

导读 2月15日,Nature子刊Nature Biotechnology(IF:43.113在线发表一篇文章,揭示了一种最新的生物3D打印技术ITOP 。通过使用新型生物材料,该打印技术能够构建出结构稳定且具备功能的人耳器官、骨骼和肌肉组织,更重要的是这些组织器官微通道,能够维持其继续生长形成血管、软骨等系统,从而发挥功能。



从材料学、航空领域、工业器械到生物行业,3D打印技术正以热门、创新的姿态渗入其中。同时,生物3D打印是再生医学、器官移植领域不可忽视的一种新兴力量。不少实验室都将生物3D技术构建组织、器官作为研究课题,致力于突破组织工程学的局限和难题。

作为再生医学的热门“利器”,目前的三维打印技术虽然实现了组织、器官的构建,但是还不能研发出足够完整、强度的功能性组织结构,用于人体一直。

2月15日,Nature子刊《Nature Biotechnology》在线发表一篇文章,揭示了一种最新的3D打印技术——Integrated Tissue and Organ Printing (ITOP) 。通过使用新型生物材料,该打印技术能够构建出结构稳定且具备功能的人耳器官、骨骼和肌肉组织,更重要的是这些组织器官融入微通道,能够维持其继续生长形成血管、软骨等系统,从而发挥功能。

ITOP融入微通道,构建出人耳、骨肉、肌肉等组织结构

ITOP技术由来自于维克森林大学浸信医学中心(WFUBMC)再生医学系主任Anthony Atala研究团队历经十年之久研发而成。

ITOP技术原理:利用类似于塑料的可降解生物材料和优化的水性凝胶,结合3D打印技术实现组织结构的重建,且这些材料能够支撑整个结构,保证细胞包含其间不受到损伤。特别注意的是,凝胶包含了微通道(micro-channels),能够与身体构建连接,实现氧气、营养等物质的运输,为细胞的生长提供环境,从而实现其功能。

ITOP技术已有成果:Atala团队构建了小型人耳器官,并将其移植至老鼠身上。观察2个月后,实验小鼠身体上的耳朵依旧保持原有结构,且已经形成软骨组织和血管系统。

这一试验结果表明,通过结合生物学原理融入微通道,能够为细胞提供各必需营养物质,支持细胞和组织的生长和功能。这些微通道为打印组织的血管、神经系统形成提供了可能。

研究人员使用ITOP系统和人类干细胞构建下颌骨碎片,用于人面部重建和修复。试验中,研究人员将下颌骨碎片移植至老鼠身上。5个月后,这些骨头碎片已经形成血管。

此外,研究人员也成功构建出肌肉组织,并植入老鼠模型。这类新技术构建的组织、器官都能够生成血管、神经系统 在2周内,且其本身形状并不改变。


有望实现个性化再生医学



Atala团队认为,既然ITOP技术能够实现细胞生长、维持组织结构功能,那么它将能够应用于个性化的再生医学领域

他们设想,通过CT、核磁共振成像等技术获取不同患者的身体结构数据,结合打印软件分析,构建匹配的3D式组织和器官。随着技术的进步,ITOP将有望实现个性化组织器官重建,用于手术移植等过程。

原始出处:

[3] Hyun-Wook Kang. A 3D bioprinting system to produce human-scale tissue constructs with structural integrity.  Nature Biotechnology.15 February 2016.

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    2017-09-09 心欲无痕 无欲则刚

    对.最重要的是3D打印的器官要能够在患者身上生长

    0

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    2017-10-05 liye789132251
  3. [GetPortalCommentsPageByObjectIdResponse(id=242231, encodeId=8a402422319f, content=对.最重要的是3D打印的器官要能够在患者身上生长, beContent=null, objectType=article, channel=null, level=null, likeNumber=72, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/07/23/e8940e6c852aed5b3336028f3dd5ff43.jpg, createdBy=f15f2091876, createdName=心欲无痕 无欲则刚, createdTime=Sat Sep 09 17:36:24 CST 2017, time=2017-09-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1881562, encodeId=ae821881562aa, content=<a href='/topic/show?id=3b2112532d8' target=_blank style='color:#2F92EE;'>#Nat#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12532, encryptionId=3b2112532d8, topicName=Nat)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2e6f107, createdName=liye789132251, createdTime=Thu Oct 05 19:41:00 CST 2017, time=2017-10-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1335935, encodeId=a8871335935a6, content=<a href='/topic/show?id=792612047e' target=_blank style='color:#2F92EE;'>#3D#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1204, encryptionId=792612047e, topicName=3D)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/pSGl6CJeZ2PzWxdhCtrvv4U9Q281RV8e0AKmlB5ib93DibbiaRyOzmkCdz5F04cbfX5RGOpG4dOXvuQW1fumibVeBg/132, createdBy=fc342500110, createdName=ms9833124466084992, createdTime=Thu Dec 29 00:41:00 CST 2016, time=2016-12-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=166027, encodeId=c7dc16602e61, content=很有价值, 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/ajNVdqHZLLC1BMzZWdMSPQWuib6BtQGicK8ygGBM6YakpfkRc67soFSuKbZr86enL1KggQZEZbgWSeicJibafmYfQ3AibicIHMwwicmDShfRFvvI38/0, createdBy=272a110164, createdName=laoli, createdTime=Tue Dec 27 10:06:17 CST 2016, time=2016-12-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=166013, encodeId=eb531660130a, content=好厉害哦!你说过了, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://login.medsci.cn/upload/avatar/cd61dcb806c004cb20c0db39a11f9344/b54860b281e1d089ff9e885a98be5d0a.jpg, createdBy=ee661994814, createdName=sucess1314, createdTime=Tue Dec 27 09:49:40 CST 2016, time=2016-12-27, status=1, ipAttribution=)]
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    2016-12-27 laoli

    很有价值

    0

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    2016-12-27 sucess1314

    好厉害哦!你说过了

    0