Nat Commun:科学家培育出第一个永生红细胞系,破解输血困局

2017-03-30 佚名 麻省理工科技评论

研究人员已经培育出第一个永生红细胞系,能够更有效地制造红细胞。目前,来自英国布里斯托大学与英国国民医疗保健署血液和移植司(NHS Blood and Transplant,NHSBT)的研究团队已能够高效制造红细胞,而且制造效率前所未有。该团队的研究成果发表于《自然通讯》杂志,如能成功通过临床试验,有望为稀有血型者提供安全的输血来源,并惠及全球血液供应不足或采血不安全的地区。


研究人员已经培育出第一个永生红细胞系,能够更有效地制造红细胞。

目前,来自英国布里斯托大学与英国国民医疗保健署血液和移植司(NHS Blood and Transplant,NHSBT)的研究团队已能够高效制造红细胞,而且制造效率前所未有。

该团队的研究成果发表于《自然通讯》杂志,如能成功通过临床试验,有望为稀有血型者提供安全的输血来源,并惠及全球血液供应不足或采血不安全的地区。

过去,人们直接将捐赠的干细胞培育为成熟的红细胞。然而,该方法仅能生产少量的成熟红细胞,并且需要重复捐赠。

如今,布里斯托大学领先世界的研究团队开发出一种稳定、可重复的技术,可以从成体干细胞中培育出永生化的红细胞系。这些未成熟的红细胞可以无限增殖,在其分化为成熟红细胞之前可以进行大规模生产。

布里斯托大学生物化学学院的 Jan Frayne 博士说:“过去,生产红细胞依赖于不同来源的干细胞,但目前干细胞的生产数量极为有限。我们另辟蹊径,培育出第一个永生化的人类成体红细胞系(Bristol Erythroid Line Adult 或 BEL-A),通过体外培养能够源源不断地制造红细胞,满足临床需要是可行的。

”全球范围内的医疗机构都需要一种红细胞的替代品。体外培养的红细胞在某些方面优于捐赠的血液,例如可以降低传染病传播的风险。“

NHSBT 研究部开发的红细胞产品是 NHSBT 与布里斯托大学的合作成果。研究部主任 Dave Anstee 教授说:”多年来,科学家一直在研究怎样制造红细胞,替代捐赠的血液来治疗患者。“

”我们培育的红细胞产品可能会首先用于救治稀有血型患者,因为他们很难通过常规捐赠得到合适的血液。“

”最有可能受益的患者是那些情况复杂、生存受到限制的患者,如镰状细胞病和地中海贫血患者,他们不仅需要高度匹配的供血,还需要多次输血。我们的目的不是取代献血,而是为特定患者群体提供特定的治疗。“

红细胞培养目前在布里斯托大学和 NHSBT 的菲尔顿基地(Filtonsite)进行。

NHSBT 每年需要收集 150 万单位血液以满足英格兰患者的需求,并且持续需要急救用的献血。在大规模使用人造红细胞之前,这一状况仍将持续多年。

2015 年,NHSBT 公布了人造血液的人体试验计划。首次试验将于 2017 年底开始,不会使用 Bel- A 细胞,而是使用由常规献血中的干细胞培育出来的人造红细胞。

原始出处:

Trakarnsanga K, Griffiths RE, Wilson MC, et al. An immortalized adult human erythroid line facilitates sustainable and scalable generation of functional red cells. Nat Commun. 2017 Mar 14.

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    2017-08-24 liye789132251
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    2017-06-16 liuli5079
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    2017-04-01 windight
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    2017-03-31 lixh1719

    WOW,红干细胞

    0

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    2017-03-31 1e0ece0dm09(暂无匿称)

    谢谢指点迷津

    0

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