Bacterial Gene Therapy

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Molecular Microbiology and Immunology".

Deadline for manuscript submissions: closed (20 April 2022) | Viewed by 3722

Special Issue Editor


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Guest Editor
Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
Interests: bacterial vectors for gene therapy; circulating microbial DNA; microbiota in disease; fecal microbiota transplantation; inflammatory bowel disease

Special Issue Information

Dear Colleagues,

The field of gene therapy has experienced a tremendous boom over the last 10 years. Nowadays, more than 20 gene-based drugs are approved in human medicine worldwide. These are based on viral vectors or naked DNA. Bacteria have also been studied as vectors in gene therapy; however, despite successes in preclinical as well as clinical studies, no bacterial gene therapy preparation has been approved for standard clinical use so far.

Bacterial gene therapy includes several approaches, such as bactofection, bacterial protein delivery, transkingdom RNA interference or bacterial DNA vaccination. Strict regulations and safety concerns represent a barrier to the transition of these strategies to the clinics. Nevertheless, recent advances in molecular biomedicine and microbiome studies have put bacterial gene therapy back into play. Tools such as fecal microbiota transplantation or recombinant probiotics open new avenues for bacterial gene therapy strategies.

This Special Issue will cover recent advances in bacterial gene therapy of human as well as animal and plant disease. Original research articles, as well as reviews and perspectives, focusing on standard or novel approaches of bacterial gene therapy, clinical applications, molecular mechanisms, bacteria–host interactions, recombinant probiotics, bacterial vector design and related areas are welcome.

Prof. Roman Gardlik
Guest Editor

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Keywords

  • Bacterial vectors
  • Bactofection
  • Bacterial protein delivery
  • Recombinant probiotics
  • Synthetic biology
  • Cancer therapy

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Published Papers (1 paper)

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Research

11 pages, 1441 KiB  
Article
Bacterially Delivered miRNA-Mediated Toll-like Receptor 8 Gene Silencing for Combined Therapy in a Murine Model of Atopic Dermatitis: Therapeutic Effect of miRTLR8 in AD
by Wonsuck Yoon, Eun-Jae Kim, Yongsung Park, Seunghyun Kim, Yong-Keun Park and Young Yoo
Microorganisms 2021, 9(8), 1715; https://doi.org/10.3390/microorganisms9081715 - 12 Aug 2021
Cited by 4 | Viewed by 2823
Abstract
In atopic dermatitis (AD), skin inflammation is caused by complex interactions between genetic disposition and aberrant innate/adaptive immune responses. Toll-like receptors (TLRs) are key molecules in the innate/adaptive immune response as they recognize various molecular motifs associated with pathogens. Among them, TLR8 is [...] Read more.
In atopic dermatitis (AD), skin inflammation is caused by complex interactions between genetic disposition and aberrant innate/adaptive immune responses. Toll-like receptors (TLRs) are key molecules in the innate/adaptive immune response as they recognize various molecular motifs associated with pathogens. Among them, TLR8 is implicated in eczematous skin reactions. We investigated the combined therapeutic effects of TLR8 gene silencing by the bacterial delivery of miRNA. We used Salmonella as a vector to deliver TLR8 miRNA. The recombinant strain of Salmonella enterica subsp. enterica serovar Typhimurium (ST) expressing TLR8 miRNA (ST-miRTLR8) was prepared for knockdown of TLR8. After oral administration of ST-miRTLR8 into mice, we observed the cytokine levels, skin pathology and scratching behaviors in an AD-like mouse model. TLR8 down-regulation decreased macrophage-derived chemokine concentrations in activated human mast cells. Serum IgE and interleukin-4 production were suppressed whereas IFN-γ was induced after oral administration of ST-miRTLR8. Scratching behaviors and skin inflammation were also improved. In addition, attenuated S. typhimurium safely accumulated in mouse macrophages and showed adjuvant effects. This study shows that the recombinant miRNA that expresses the TLR8 miRNA has therapeutic effects by suppressing Th2 inflammation. TLR gene modulation using miRNA via Salmonella vectors will thus have a double-protective effect in the treatment of AD. Full article
(This article belongs to the Special Issue Bacterial Gene Therapy)
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