Antiherpes simplex virus type 2 activity of the antimicrobial peptide subtilosin.

Antiherpes simplex virus type 2 activity of the antimicrobial peptide subtilosin.
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DOI:
10.1111/jam.12618
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发表时间:
2014-11
影响因子:
4
通讯作者:
Chikindas M
Chikindas M
中科院分区:
生物学3区
文献类型:
--
作者:
Quintana VM;Torres NI;Wachsman MB;Sinko PJ;Castilla V;Chikindas M

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在本研究中,我们评估了subtilosin的抗病毒活性,从解淀粉芽孢杆菌中分离的一种环状肽,对单纯疱疹病毒2型(HSV-2)在细胞培养中,我们调查subtilosin的作用模式。我们使用病毒产率抑制测定确定,非细胞毒性浓度的subtilosin抑制Vero细胞培养物中HSV-2的复制。Subtilosin强烈抑制细胞外和总病毒的产生,即使当它被添加在感染后8小时,表明不仅病毒释放,而且病毒颗粒的形成是由抗病毒肽阻碍。虽然病毒糖蛋白gD的表达水平不受细菌素的影响,gD的细胞内定位的改变模式,通过免疫荧光法检测在subtilosin处理的文化。另一方面,在高浓度下,subtilosin显示杀病毒作用。Subtilosin显示抗HSV-2的抗病毒和杀病毒作用。枯草杆菌素抑制作用的靶点是病毒复制周期的晚期阶段,如病毒糖蛋白的细胞内转运。
In the present study we evaluated the antiviral activity of subtilosin, a cyclical peptide isolated from Bacillus amyloliquefaciens, against herpes simplex virus type 2 (HSV-2) in cell cultures and we investigated subtilosin mode of action. We determined, using a virus yield inhibition assay, that non cytotoxic concentrations of subtilosin inhibit HSV-2 replication in Vero cell cultures. Subtilosin strongly inhibited extracellular and total virus production even when it was added at 8 h post-infection indicating that not only virus release but also viral particle formation is impeded by the antiviral peptide. Although viral glycoprotein gD level of expression is not affected by the bacteriocin, an altered pattern of gD intracellular localization was detected by immunofluorescence assay in subtilosin treated culture. On the other hand, at high concentrations subtilosin displays virucidal action. Subtilosin displays antiviral and virucidal actions against HSV-2. The target of subtilosin inhibitory effect would be late stages of the viral replicative cycle such as viral glycoprotein intracellular transport.
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