Novel Therapeutics Targeting the Host-Pathogen Interaction 2.0

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

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 4113

Special Issue Editor


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Guest Editor
Section of Microbiology, Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy
Interests: host/pathogens interactions; intracellular pathogens; new therapeutic treatments
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Special Issue Information

Dear Colleagues,

This Special Issue is a continuation of our 2022 Special Issue "Novel Therapeutics Targeting the Host-Pathogen Interaction".

Currently, there is an urgent need for new strategies to combat human diseases caused by intracellular pathogens, including viruses, intracellular bacteria, and protozoa. An attractive solution to fulfill this demand is to repurpose already approved drugs that target host functions required for the lifecycle of intracellular pathogens. Off-label use of approved drugs requires significantly less capital and time and diminishes the clinical risks because such drugs are already rigorously tested for their primary indication. To effectively meet the clinical needs posed by emerging intracellular pathogens, host-targeted broad-spectrum therapies may find utility. For this reason, the knowledge of host-pathogen interactions is vital for our understanding of infectious diseases, as well as their spread, development, treatment, and prevention. Therefore, a comprehensive understanding of host-pathogen interaction can provide important new insights into the identification of novel targets for both host effectors and microbial factors, and lead to new therapeutic treatments. Infection by a pathogenic microorganism triggers a coordinated activation of both innate and adaptive immune responses. After initial contact between host and pathogen, host innate immune activation results in the production of multiple effector molecules, including cytokines and chemokines as well as antimicrobial proteins, to combat invading pathogens and parasites. In addition, the innate immune response quickly triggers an antimicrobial response that will initiate the development of a pathogen-specific, long-lasting adaptive immune response.

In this Special Issue, we aim to address the relevance of host-pathogen interactions for experimental and applied therapy. In particular, investigations into mechanisms and pathogenic strategies could provide new ideas to develop innovative tools that can be utilized to modulate microbial pathogenesis. We welcome the submission of research material focused on any of the different biological interaction points mentioned above, hoping that these will result in a better understanding of pathogen-host biological interactions and open new doors in scientific research.

Prof. Dr. Cinzia Giagulli
Guest Editor

Manuscript Submission Information

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Keywords

  • host/pathogens interactions
  • intracellular pathogens
  • new therapeutic treatments

Published Papers (1 paper)

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Review

18 pages, 1892 KiB  
Review
A Bittersweet Kiss of Gram-Negative Bacteria: The Role of ADP-Heptose in the Pathogenesis of Infection
by Karolina Sidor and Tomasz Skirecki
Microorganisms 2023, 11(5), 1316; https://doi.org/10.3390/microorganisms11051316 - 17 May 2023
Viewed by 2207
Abstract
Due to the global crisis caused by the dramatic rise of drug resistance among Gram-negative bacteria, there is an urgent need for a thorough understanding of the pathogenesis of infections of such an etiology. In light of the limited availability of new antibiotics, [...] Read more.
Due to the global crisis caused by the dramatic rise of drug resistance among Gram-negative bacteria, there is an urgent need for a thorough understanding of the pathogenesis of infections of such an etiology. In light of the limited availability of new antibiotics, therapies aimed at host–pathogen interactions emerge as potential treatment modalities. Thus, understanding the mechanism of pathogen recognition by the host and immune evasion appear to be the key scientific issues. Until recently, lipopolysaccharide (LPS) was recognized as a major pathogen-associated molecular pattern (PAMP) of Gram-negative bacteria. However, recently, ADP-L-glycero-β-D-manno-heptose (ADP-heptose), an intermediate carbohydrate metabolite of the LPS biosynthesis pathway, was discovered to activate the hosts’ innate immunity. Therefore, ADP-heptose is regarded as a novel PAMP of Gram-negative bacteria that is recognized by the cytosolic alpha kinase-1 (ALPK1) protein. The conservative nature of this molecule makes it an intriguing player in host–pathogen interactions, especially in the context of changes in LPS structure or even in its loss by certain resistant pathogens. Here, we present the ADP-heptose metabolism, outline the mechanisms of its recognition and the activation of its immunity, and summarize the role of ADP-heptose in the pathogenesis of infection. Finally, we hypothesize about the routes of the entry of this sugar into cytosol and point to emerging questions that require further research. Full article
(This article belongs to the Special Issue Novel Therapeutics Targeting the Host-Pathogen Interaction 2.0)
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