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G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
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[Toll-like receptors].

M Essakalli1, O Atouf, N Bennani

  • 1Service de transfusion et d'hémovigilance, hôpital Ibn-Sina, CHU de Rabat, B.P. 2014, Rabat-Ryad, 10000 Rabat, Maroc. m_essakalli@hotmail.com

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Toll-like receptors (TLRs) are key innate immune sensors for pathogens and damage signals. Understanding TLR signaling opens new avenues for treating diseases like cancer and autoimmune disorders.

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Area of Science:

  • Immunology
  • Molecular Biology

Background:

  • Toll-like receptors (TLRs) are crucial innate immune sensors.
  • They recognize pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs).
  • Eleven TLRs are identified in humans, acting as danger receptors in immune and non-immune cells.

Purpose of the Study:

  • To elucidate the role of TLRs in innate and adaptive immunity.
  • To explore the therapeutic potential of modulating TLR signaling pathways.
  • To understand the physiopathology of diseases involving TLRs.

Main Methods:

  • Review of intracellular signaling pathways of TLRs.
  • Analysis of studies utilizing TLR agonists and antagonists.
  • Examination of the interplay between innate and adaptive immunity.

Main Results:

  • TLR activation triggers cellular responses and adaptive immunity.
  • TLR agonists are explored for vaccines against infectious diseases, allergies, and cancers.
  • TLR antagonists are investigated for autoimmune and chronic inflammatory diseases.

Conclusions:

  • TLR signaling knowledge advances disease physiopathology understanding.
  • The distinction between innate and adaptive immunity is blurring due to TLRs.
  • Modulating TLRs offers promising diagnostic and therapeutic strategies.