Molecular Mechanisms of Host–Pathogen Interaction in Bacterial Infections

Abstract

The molecular relations between bacterial pathogens and their hosts form the basis of the development, progress, and cure of infectious diseases. The bacterial pathogens can be characterized by a wide variety of highly sophisticated virulence mechanisms, including adhesins, invasions, toxins, and distinct secretion systems, that help them to invade host tissues, modify cellular signaling cascades, and escape immune recognition. Simultaneously, the innate immune reactions are regulated and coordinated in the defense system of the body and mediated by pattern recognition receptors, signaling cascades, and effector mechanisms such as phagocytosis, cytokine generation, and antimicrobial peptides. The success of infection control or disease progression depends upon the continuous molecular communication between the host and pathogen. More recent developments in genomics, proteomics and molecular immunology have dramatically enhanced our insight into these complex connections, demonstrating significant elements that influence the degree of harm brought by dangerous bacteria and the probability of a host becoming ill. Gaining insight into the biology of bacterial infections by understanding the molecular pathways of host-pathogen interactions not only facilitates our understanding of the biology of bacterial infections but also can be instrumental in identifying new targets of treatment. The information is useful in developing new approaches to treating and preventing bacterial infections including anti-virulence medications, immune-based therapy, and the generation of new vaccines