In vitro evaluation of antiviral activity of Shouchella clausii probiotic strain and bacterial supernatant against herpes simplex virus type 1

Herpes simplex virus-1 (HSV-1) is an important human neurotropic virus infecting 70% of the world population. Due to the emergence of viral resistance via mutations in HSV-1 genes and some of the adverse effects of antiviral compounds, there is a growing need for safe, novel, and effective therapeut...

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Veröffentlicht in:Archives of microbiology 2022-08, Vol.204 (8), p.522-522, Article 522
Hauptverfasser: barzoki, Mehdi Gholami, Malekshahi, Somayeh Shatizadeh, Shayestehpour, Mohammad
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description Herpes simplex virus-1 (HSV-1) is an important human neurotropic virus infecting 70% of the world population. Due to the emergence of viral resistance via mutations in HSV-1 genes and some of the adverse effects of antiviral compounds, there is a growing need for safe, novel, and effective therapeutic and preventive strategies. The aim of the present study was to investigate for the first time the potential antiviral activity of Shouchella clausii probiotic strain and bacterial supernatant against HSV-1. The MTT assay was used to determine the possible cytotoxicity of the S. clausii and bacterial supernatant. Vero cells were treated by S. clausii , bacterial supernatant, and HSV-1 under pre-treatment (incubation of Vero cells with S. clausii then HSV-1 inoculation), pre-incubation (mixture of co-incubated HSV-1/ S. clausii added to Vero cell), competition (adding HSV-1 and S. clausii into Vero cells simultaneously) and post-treatment (Vero cells inoculated with HSV-1 then incubated with S. clausii ) assays. Viral titer reduction (TCID 50 ) and viral DNA relative quantification by real-time PCR were measured in each experimental condition. The results indicated that S. clausii and its supernatant had the greatest inhibitory activity toward HSV-1 in pre-treatment assay. The HSV-1 titer treated with S. clausii , and bacterial supernatant was 3.6 and 2.2 Log 10 TCID 50 /mL lower compared to the control (7.66 Log 10 TCID 50 /mL). Results showed an antiviral effect of S. clausii and its supernatant. S. clausii could be considered as a novel inhibitor for HSV-1 infection.
doi_str_mv 10.1007/s00203-022-03137-9
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Viral titer reduction (TCID 50 ) and viral DNA relative quantification by real-time PCR were measured in each experimental condition. The results indicated that S. clausii and its supernatant had the greatest inhibitory activity toward HSV-1 in pre-treatment assay. The HSV-1 titer treated with S. clausii , and bacterial supernatant was 3.6 and 2.2 Log 10 TCID 50 /mL lower compared to the control (7.66 Log 10 TCID 50 /mL). Results showed an antiviral effect of S. clausii and its supernatant. 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subjects Antiviral activity
Assaying
Bacteria
Biochemistry
Biomedical and Life Sciences
Biotechnology
Cell Biology
Cytotoxicity
Ecology
Herpes simplex
Herpes viruses
Incubation
Inoculation
Life Sciences
Microbial Ecology
Microbiology
Mutation
Original Paper
Pretreatment
Probiotics
Time measurement
Toxicity
Vero cells
Viruses
World population
title In vitro evaluation of antiviral activity of Shouchella clausii probiotic strain and bacterial supernatant against herpes simplex virus type 1
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