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JAMA:修正基因的自体表皮移植治疗隐性营养不良性大疱性表皮松解症

2016-11-03 MedSci MedSci原创

隐性营养不良性大疱性表皮松解症(RDEB)是具有破坏性、致命的疾病,由编码VII型胶原的COL7A1基因突变引起。支持和姑息治疗是目前唯一的治疗方法。本项单中心1期临床试验在美国进行,研究目的是评价修正基因的自体表皮移植治疗RDEB的安全性和创伤结局,纳入4例重度RDEB患者,至少需要移植100 cm2。检测不到VII型胶原角质形成细胞表达的患者被排除在外。从4例RDEB患者的活检样本中分离出自体

隐性营养不良性大疱性表皮松解症(RDEB)是具有破坏性、致命的疾病,由编码VII型胶原的COL7A1基因突变引起。支持和姑息治疗是目前唯一的治疗方法。

本项单中心1期临床试验在美国进行,研究目的是评价修正基因的自体表皮移植治疗RDEB的安全性和创伤结局,纳入4例重度RDEB患者,至少需要移植100 cm2。检测不到VII型胶原角质形成细胞表达的患者被排除在外。

从4例RDEB患者的活检样本中分离出自体表皮细胞,使用良好制造实践级逆转录病毒携带全长人系COL7A1进行转导,装配成表皮移植。VII型胶原基因–修正后(约35 cm2)移植到每位患者的6处创伤处(共24处移植)。

主要安全结果是重组逆转录病毒、癌症和自身免疫性反应。采用免疫荧光和免疫电镜检测VII型胶原的表达评估分子修正情况。使用移植后3个月、个月和12个月的系列摄像评估伤口愈合情况。

4例患者(平均年龄23年[范围18-32岁])均为男性,估计患RDEB的体表面积为4%至30%。所有24个移植耐受性良好,没有严重的不良事件。免疫荧光显微镜测量移植处真皮表皮交界处VII型胶原的表达情况如下:移植后3个月,10例样本中有9例(90%)可见表达;移植6个月后,8/12(66%);移植12个月后,5/12(42%);包括正确的VII型胶原定位锚纤维。与基线伤口部位比较,重组型胶原移植部位的伤口显示3个月时愈合超过75%或更大(24个伤口部位中有21个完整的移植物部位,87%)。6个月的数据为,16/24; 67%;12个月的数据为,12/24; 50%。

本研究的4例RDEB患者中,一些Ⅶ型胶原基因修正移植创面愈合,但不同患者的反应程度不同,通常超过1年时间反应程度在下降。对这些患者进行长期随访是必要的,以及进一步的对照试验是必要的,纳入更广泛的患者,以更好地了解基因矫正的自体表皮移植的潜在长期疗效。

原始出处:

Zurab Siprashvili,Safety and Wound Outcomes Following Genetically Corrected Autologous Epidermal Grafts in Patients With Recessive Dystrophic Epidermolysis Bullosa.JAMA. 2016;316(17):1808-1817.

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  2. [GetPortalCommentsPageByObjectIdResponse(id=2018265, encodeId=f6ef201826541, content=<a href='/topic/show?id=d2619852345' target=_blank style='color:#2F92EE;'>#隐性营养不良性大疱性表皮松解症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=98523, encryptionId=d2619852345, topicName=隐性营养不良性大疱性表皮松解症)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Wed Jun 28 06:10:00 CST 2017, time=2017-06-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=155628, encodeId=da5415562851, content=期待随访效果, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM5rqTiaMSVSkFAupcTECOTdcVRmJQXbibJoicv5ibhcpa0vj5MGmac8wlPjuGnJISZGtOnC7rW0gbLuSE7iaEvAn0CC52ZhnRLdxtlQ/0, createdBy=1e291737907, createdName=1df01bccm39(暂无匿称), createdTime=Mon Nov 14 08:59:40 CST 2016, time=2016-11-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=155451, encodeId=daa315545124, content=学习了,分享, beContent=null, objectType=article, channel=null, level=null, likeNumber=81, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Sun Nov 13 12:18:24 CST 2016, time=2016-11-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1412731, encodeId=3cfa1412e31fa, content=<a href='/topic/show?id=12d343e9340' target=_blank style='color:#2F92EE;'>#大疱性表皮松解症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43793, encryptionId=12d343e9340, topicName=大疱性表皮松解症)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=ee352889971, createdName=nian.wang1983, createdTime=Sat Nov 05 00:10:00 CST 2016, time=2016-11-05, status=1, ipAttribution=)]
    2016-11-14 1df01bccm39(暂无匿称)

    期待随访效果

    0

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    2016-11-13 虈亣靌

    学习了,分享

    0

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