X-ray inactivation of RNA viruses without loss of biological characteristics.

X-ray inactivation of RNA viruses without loss of biological characteristics.
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DOI:
10.1038/s41598-020-77972-5
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发表时间:
2020-12-08
期刊:
影响因子:
4.6
通讯作者:
Hewson R
Hewson R
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Afrough B;Eakins J;Durley-White S;Dowall S;Findlay-Wilson S;Graham V;Lewandowski K;Carter DP;Hewson R

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在需要高/最高生物安全遏制设施(即BSL3和BSL4)的不可预测的病毒爆发的情况下,X射线照射有可能缓解传统诊断瓶颈的压力,并加快较低遏制下的工作。在蒙特卡罗模拟和体外1-log10小数点缩减值(D值)预测的指导下,论证了有效灭活医学上重要的黄病毒科、奈罗病毒科、菲尼病毒科和黄病毒科的人畜共患病毒所需的X射线光子能量。具体地说,研究表明,优化的辐照方法在许多下游检测和功能分析中具有吸引力,因为它保留了关键的生化和免疫学特性。这项研究提供的证据表明,X射线照射可以以一种安全、可重复和可扩展的方式支持应急准备、疫情应对和一线诊断,这些方式与原本仅限于更高密封性的BSL3或BSL4实验室的操作有关。
In the event of an unpredictable viral outbreak requiring high/maximum biosafety containment facilities (i.e. BSL3 and BSL4), X-ray irradiation has the potential to relieve pressures on conventional diagnostic bottlenecks and expediate work at lower containment. Guided by Monte Carlo modelling and in vitro 1-log10 decimal-reduction value (D-value) predictions, the X-ray photon energies required for the effective inactivation of zoonotic viruses belonging to the medically important families of Flaviviridae, Nairoviridae, Phenuiviridae and Togaviridae are demonstrated. Specifically, it is shown that an optimized irradiation approach is attractive for use in a multitude of downstream detection and functional assays, as it preserves key biochemical and immunological properties. This study provides evidence that X-ray irradiation can support emergency preparedness, outbreak response and front-line diagnostics in a safe, reproducible and scalable manner pertinent to operations that are otherwise restricted to higher containment BSL3 or BSL4 laboratories.
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