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自然子刊撤稿韩春雨NgAgo论文,系作者主动撤回!

2017-08-03 13:26:24   法制晚报

在此期间,《自然-生物技术》一直与科研界保持联络,关注各种为重复论文所做的持续努力。最终,在编辑们的协调下,三个独立小组的成果形成了一篇单独的反驳性论文,并通过了同行评议(Nat.Biotechnol.34,768-773,2016)。有了这些数据,我们就有充分的理由去提醒读者留意该论文可能存在问题,我们将正式的“编辑部关注”发表在该篇论文所在的网址上,此举得到包括韩春雨在内的两位论文作者的支持。

我们也询问了论文作者是否可以解答科研界为何难以重复他们的结果。于是,去年12月,韩春雨及同事,还有另外几个与本刊联系的独立研究小组,提供了新的数据,称已经重复了NgAgo基因编辑活性。当时,本刊编辑和一位外部评审人都判定这些数据太过初级,不满足发表标准。因此,我们决定给这些原始论文作者和新的研究小组更多时间来收集更多的能支持其论点的实验证据。

现在,距原论文发表已过去了一年多,我们了解到当初曾报告说初步成功重复出实验结果的独立研究小组,无法强化初始数据,使其达到可发表的水平。类似的,在征求专家评审人的反馈意见后,我们判定韩春雨及同事提供的最新数据不足以反驳大量与其初始发现相悖的证据。我们现在确信韩春雨的撤稿决定是维护已发表科研记录完整性的最好做法。

这篇有关NgAgo的论文发表出来,并不是科研过程的结束,而是开始。与任何其它发表出来的报告一样,正是广大的科研共同体对相关方法进行了检验,识别潜在的错误来源,验证试剂并优化试验。在本例中,有多位敬业的研究者个人对已发表实验方法的各种细节进行检验,并完成记录翔实和有对照组的反驳性研究(Protein Cell 7, 913, 2016; Cell Res.26, 1349-1352, 2016; PLoS ONE, 12, e0177444, 2017)。 

这篇NgAgo论文也显示了社交媒体的利与弊。显然,这些平台对于迅速提醒广大科学界留意该论文可能存在的问题发挥了重要作用。但是,它们也抬高了人们的预期,以为有关这篇论文的问题是直截了当,可以快速解决的。然而,关于NgAgo的各种问题是无法在几个星期或几个月内就能澄清的,这是有原因的。即使是简单的实验也需要花费数周来准备、实施、分析和解决出现的问题。另外于事无益的是,那些进行可重复性研究的人,其付出的努力往往得不到回报——这样的工作单调乏味,没有资金支持,还吃力不讨好。

难怪在希望得到快速、明确答案的全天候媒体和公众眼中,论文发表后的同行评议流程似乎慢得让人沮丧。但是,当涉及生物学时,往往没有明确的答案。当研究重复性时,有一点我们是知道的,那就是这需要花时间来做。就这篇有关NgAgo的论文而言,现在是时候了,数据已经说话了。

2016年5月,中国河北科技大学的韩春雨及其团队在全球著名学术刊物《自然》的子刊《自然-生物技术》上报告发明了一种新的基因编辑技术NgAgo-gDNA。论文称,与当前基因编辑领域内的主流技术CRISPR-Cas9相比,NgAgo-gDNA在一些方面具有优势。但随后中国以及国外都有学者公开表示无法重复论文中描述的实验,这项研究成果遭到多方质疑。

责任编辑:高宗影 CN060
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