scholarly journals Toll-Like Receptors: General Molecular and Structural Biology

2021 ◽  
Vol 2021 ◽  
pp. 1-21
Author(s):  
Payam Behzadi ◽  
Herney Andrés García-Perdomo ◽  
Tomasz M. Karpiński
Keyword(s):  
Immune System ◽  
Drug Discovery ◽  
Structural Biology ◽  
English Language ◽  
Inflammatory Diseases ◽  
Adaptive Immune System ◽  
Toll Like Receptors ◽  
Adaptive Immune ◽  
Molecular Patterns

Background/Aim. Toll-like receptors (TLRs) are pivotal biomolecules in the immune system. Today, we are all aware of the importance of TLRs in bridging innate and adaptive immune system to each other. The TLRs are activated through binding to damage/danger-associated molecular patterns (DAMPs), microbial/microbe-associated molecular patterns (MAMPs), pathogen-associated molecular patterns (PAMPs), and xenobiotic-associated molecular patterns (XAMPs). The immunogenetic molecules of TLRs have their own functions, structures, coreceptors, and ligands which make them unique. These properties of TLRs give us an opportunity to find out how we can employ this knowledge for ligand-drug discovery strategies to control TLRs functions and contribution, signaling pathways, and indirect activities. Hence, the authors of this paper have a deep observation on the molecular and structural biology of human TLRs (hTLRs). Methods and Materials. To prepare this paper and fulfill our goals, different search engines (e.g., GOOGLE SCHOLAR), Databases (e.g., MEDLINE), and websites (e.g., SCOPUS) were recruited to search and find effective papers and investigations. To reach this purpose, we tried with papers published in the English language with no limitation in time. The iCite bibliometrics was exploited to check the quality of the collected publications. Results. Each TLR molecule has its own molecular and structural biology, coreceptor(s), and abilities which make them unique or a complementary portion of the others. These immunogenetic molecules have remarkable roles and are much more important in different sections of immune and nonimmune systems rather than that we understand to date. Conclusion. TLRs are suitable targets for ligand-drug discovery strategies to establish new therapeutics in the fields of infectious and autoimmune diseases, cancers, and other inflammatory diseases and disorders.

scholarly journals Allergen-associated molecular patterns: a new trend in modern allergology

2019 ◽  
Vol 18 (1) ◽  
pp. 76-83
Author(s):  
V. S. Sviridova ◽  
P. Yu. Isaev ◽  
V. V. Klimov ◽  
M. I. Romanova ◽  
N. S. Koshkarova
Keyword(s):  
Innate Immunity ◽  
Immune System ◽  
Adaptive Immune System ◽  
Conserved Motifs ◽  
Immune Mechanisms ◽  
Adaptive Immune ◽  
Molecular Patterns

Over the last decade the role of innate immunity has been known to be crucial for the activation of adaptive immune system. The main triggers that upregulate reactions of innate immunity are small exogenous molecules with conserved motifs, molecular patterns. The article discusses a variety of possible roles of molecular patterns in the immune mechanisms, including the participation of Allergen Associated Molecular Patterns (AAMPs) in allergic processes.

Passive and active components of neonatal innate immune defenses

2005 ◽  
Vol 6 (2) ◽  
pp. 143-158 ◽  
Author(s):  
Matthew A. Firth ◽  
Patricia E. Shewen ◽  
Douglas C. Hodgins
Keyword(s):  
Immune System ◽  
Membrane Damage ◽  
Adaptive Immune System ◽  
Innate Immune ◽  
Pathogenic Microorganisms ◽  
Active Components ◽  
Adaptive Immune ◽  
Immune Defenses ◽  
Molecular Patterns ◽  
Cellular Components

AbstractInnate immune defenses are crucial for survival in the first days and weeks of life. At birth, newborns are confronted with a vast array of potentially pathogenic microorganisms that were not encountered in utero. At this age, cellular components of the adaptive immune system are in a naïve state and are slow to respond. Antibodies received from the dam are essential for defense, but represent a finite and dwindling resource. Innate components of the immune system detect pathogen-associated molecular patterns (PAMPs) on microorganisms (and their products) by means of pattern-recognition receptors (PRRs). Soluble mediators of the innate system such as complement proteins, pentraxins, collectins, ficolins, defensins, lactoferrin, lysozyme etc. can bind to structures on pathogens, leading to agglutination, interference with receptor binding, opsonization, neutralization, direct membrane damage and recruitment of additional soluble and cellular elements through inflammation. Cell-associated receptors such as the Toll-like receptors (TLRs) can activate cells and coordinate responses (both innate and adaptive). In this paper, accumulated knowledge of the receptors, soluble and cellular elements that contribute to innate defenses of young animals is reviewed. Research interest in this area has been intermittent, and the literature varies in quantity and quality. It is hoped that documentation of the limitations of our knowledge base will lead to more extensive and enlightening studies.

scholarly journals DAMPs and Innate Immune Training

2021 ◽  
Vol 12 ◽  
Author(s):  
Elisa Jentho ◽  
Sebastian Weis
Keyword(s):  
Immune System ◽  
Adaptive Immune System ◽  
Innate Immune ◽  
Immune Memory ◽  
Trained Immunity ◽  
Downstream Signaling ◽  
Adaptive Immune ◽  
Open Questions ◽  
Molecular Patterns ◽  
Damage Associated Molecular Patterns

The ability to remember a previous encounter with pathogens was long thought to be a key feature of the adaptive immune system enabling the host to mount a faster, more specific and more effective immune response upon the reencounter, reducing the severity of infectious diseases. Over the last 15 years, an increasing amount of evidence has accumulated showing that the innate immune system also has features of a memory. In contrast to the memory of adaptive immunity, innate immune memory is mediated by restructuration of the active chromatin landscape and imprinted by persisting adaptations of myelopoiesis. While originally described to occur in response to pathogen-associated molecular patterns, recent data indicate that host-derived damage-associated molecular patterns, i.e. alarmins, can also induce an innate immune memory. Potentially this is mediated by the same pattern recognition receptors and downstream signaling transduction pathways responsible for pathogen-associated innate immune training. Here, we summarize the available experimental data underlying innate immune memory in response to damage-associated molecular patterns. Further, we expound that trained immunity is a general component of innate immunity and outline several open questions for the rising field of pathogen-independent trained immunity.

Toll-like receptors as a therapeutic target in cancer, infections and inflammatory diseases

Immunotherapy ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 311-322
Author(s):  
Lizdany Flórez-Álvarez ◽  
Lanie Ruiz-Perez ◽  
Natalia Taborda ◽  
Juan C Hernandez
Keyword(s):  
Immune Response ◽  
Immune Responses ◽  
Inflammatory Diseases ◽  
Adaptive Immune Response ◽  
Treatment Strategies ◽  
Toll Like Receptors ◽  
Tumor Treatment ◽  
Special Report ◽  
Adaptive Immune ◽  
Molecular Patterns

Toll-like receptors (TLRs) are widely expressed pattern recognition receptors that bind to conserved molecular patterns expressed by pathogens and damaged cells. After recognition, activated TLRs induce the expression of various proinflammatory and antiviral molecules. Thus, TLRs are potential targets for treatment strategies aimed at boosting the adaptive immune response to vaccines, controlling infections, enhancing immune responses during tumor treatment and attenuating immune responses in inflammatory disorders. This Special Report examines the potential of TLRs as targets for the treatment of cancer, infections and inflammatory diseases. Here, we make a particular emphasis on molecules capable of modulating TLRs and their therapeutic applications.

Evolution and age characteristics of the innate and adaptive immune system

2016 ◽  
Vol 75 (3) ◽  
pp. 74-84 ◽  
Author(s):  
A.E. Abaturov ◽  
◽  
E.A. Agafonova ◽  
N.I. Abaturova ◽  
V.L. Babich ◽  
...  
Keyword(s):  
Immune System ◽  
Adaptive Immune System ◽  
Adaptive Immune

scholarly journals Unfolded Protein Corona Surrounding Nanotubes Influence the Innate and Adaptive Immune System

2021 ◽  
Vol 8 (8) ◽  
pp. 2004979
Author(s):  
Jun‐Young Park ◽  
Sung Jean Park ◽  
Jun Young Park ◽  
Sang‐Hyun Kim ◽  
Song Kwon ◽  
...  
Keyword(s):  
Immune System ◽  
Adaptive Immune System ◽  
Protein Corona ◽  
Unfolded Protein ◽  
Adaptive Immune
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