JAMA:经心肌注射自体间充质干细胞或骨髓单个核细胞治疗缺血性心肌病是安全的(TAC-HFT试验)

2014-01-10 MedSci MedSci原创

    最近基础研究和临床试验表明骨髓来源细胞提取成分,包括单个核骨髓细胞和间充质干细胞可以减轻急性心梗和慢性缺血性心肌病左室重塑。针对缺血性心肌病有效的抑制重塑、促进再生的治疗将会解决许多病人的主要问题。通过培养扩增的骨髓中的间充质干细胞,由于更强的分化能力,推测其可能可以形成异位组织或刺激肿瘤形成,但也拥有比骨髓单个核细胞更强的抗纤维化以及促进再生的能力。间充

    最近基础研究和临床试验表明骨髓来源细胞提取成分,包括单个核骨髓细胞和间充质干细胞可以减轻急性心梗和慢性缺血性心肌病左室重塑。针对缺血性心肌病有效的抑制重塑、促进再生的治疗将会解决许多病人的主要问题。通过培养扩增的骨髓中的间充质干细胞,由于更强的分化能力,推测其可能可以形成异位组织或刺激肿瘤形成,但也拥有比骨髓单个核细胞更强的抗纤维化以及促进再生的能力。间充质干细胞是否和骨髓单个核细胞一样安全,甚至可能更有效这一问题尚未解决。

    为了阐明这些问题,我们开展了1期和2期临床试验,均为随机、双盲、安慰剂对照试验,研究通过在缺血性心肌病患者心内膜分别注射经培养扩增的自体间充质干细胞以及自体骨髓单个核细胞,并比较两者效果。TAC-HFT试验预示着缺血性心肌病细胞治疗的开展,细胞治疗也可能进一步推广到其它器官或疾病。
    基础和临床研究表明单个核骨髓细胞(BMCs)和间充质干细胞(MCSs)可以减轻急性心梗和慢性缺血性心肌病左室重塑,但MSCs或BMCs治疗缺血性心 肌病的安全有效性仍存在争议。针对这一问题,来自美国的Joshua M.Hare博士等人进行了一项研究,研究结果在线发表在2013年11月8日的JAMA杂志上。该研究发现在慢性缺血性心肌病伴左室功能不全的患者心内膜注射MSCs和BMCs是安全的。(全文下载

    该研究为一项随机、双盲、安慰剂对照临床试验。研究初始共纳入65名患有缺血性心肌病且左室射血分数小于50%的患者,最后59名患者完成该项试验。这59名患者中注射MSCs和BMCs的各有19人,而两组设立的安慰剂组分别有11人和10人。注射后随访时间为1年。



    研究结果表明1年严重不良事件发生率在MSCs、BMCs和安慰剂组分别为31.6%、31.6%和38.1%。1年后,明尼苏达心衰生活量表得分在 MSCs、BMCs组均得到改善,而安慰剂组没有改善。6分钟步行距离仅在MSCs组增加。梗死面积在MSCs组明显减少,但在BMCs组和安慰剂组均无 明显减少。干细胞注射局部心功能在MSCs组明显改善,而在BMCs组和安慰剂组无明显改善。各组左室容积和射血分数均无改变。
    通过本试验发现在慢性缺血性心肌病伴左室功能不全的患者,心内膜注射自体间充质干细胞(MSCs)和骨髓单个核细胞(BMCs)是安全的。这项研究也为下一步进行更大规模研究提供基础。


原始出处:
Heldman AW, DiFede DL, Fishman JE, Zambrano JP, Trachtenberg BH, Karantalis V, Mushtaq M, Williams AR, Suncion VY, McNiece IK, Ghersin E, Soto V, Lopera G, Miki R, Willens H, Hendel R, Mitrani R, Pattany P, Feigenbaum G, Oskouei B, Byrnes J, Lowery MH, Sierra J, Pujol MV, Delgado C, Gonzalez PJ, Rodriguez JE, Bagno LL, Rouy D, Altman P, Foo CW, da Silva J, Anderson E, Schwarz R, Mendizabal A, Hare JM.Transendocardial mesenchymal stem cells and mononuclear bone marrow cells for ischemic cardiomyopathy: the TAC-HFT randomized trial.JAMA. 2014 Jan 1;311(1):62-73.
全文下载

Trachtenberg B, Velazquez DL, Williams AR, McNiece I, Fishman J, Nguyen K, Rouy D, Altman P, Schwarz R, Mendizabal A, Oskouei B, Byrnes J, Soto V, Tracy M, Zambrano JP, Heldman AW, Hare JM.Rationale and design of the Transendocardial Injection of Autologous Human Cells (bone marrow or mesenchymal) in Chronic Ischemic Left Ventricular Dysfunction and Heart Failure Secondary to Myocardial Infarction (TAC-HFT) trial: A randomized, double-blind, placebo-controlled study of safety and efficacy. Am Heart J. 2011 Mar;161(3):487-93.

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    2014-02-26 grace5700
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    2014-01-17 114.54.1.116

    但这种肌注能否被其他人重复?肌注后细胞存活了没有?还是分化为心肌细胞?

    0

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    2014-01-11 120.192.83.198

    有效性还需要验证

    0

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