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TGF - β Signaling Pathway

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The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
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  1. Home
  3. Evaluation Of Cnpase And Tgfβ1/smad Signalling Pathway Molecule Expression In Sinus Epithelial Tissues Of Patients With Chronic Rhinosinusitis With (crswnp) And Without Nasal Polyps (crssnp).
  1. Home
  3. Evaluation Of Cnpase And Tgfβ1/smad Signalling Pathway Molecule Expression In Sinus Epithelial Tissues Of Patients With Chronic Rhinosinusitis With (crswnp) And Without Nasal Polyps (crssnp).

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Evaluation of CNPase and TGFβ1/Smad Signalling Pathway Molecule Expression in Sinus Epithelial Tissues of Patients

Katarzyna Piszczatowska1, Katarzyna Czerwaty2, Karolina Dżaman2

  • 1Department of Biochemistry, Medical University of Warsaw, 02-091 Warsaw, Poland.

Journal of Personalized Medicine
|September 28, 2024

View abstract on PubMed

Summary
This summary is machine-generated.
Keywords:
CNPaseSmad2TGFβ1adenosineairway epitheliumchronic rhinosinusitispSmad3

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This study investigated chronic rhinosinusitis (CRS) by examining protein expression in patients. Researchers found altered levels of Smad2, pSmad3, TGFβ1, and CNPase, suggesting a new pathway in CRS pathogenesis.

Area of Science:

  • Immunology
  • Otolaryngology
  • Molecular Biology

Background:

  • Chronic rhinosinusitis (CRS) affects 5-12% of the population with high recurrence rates post-surgery.
  • TGFβ1 pathways and adenosine signaling are implicated in CRS tissue remodeling and inflammation.
  • CNPase metabolizes cyclic monophosphates, potentially influencing adenosine levels in CRS.

Purpose of the Study:

  • To assess the expression of Smad2, pSmad3, TGFβ1, and CNPase proteins in sinus tissues of CRS patients.
  • To correlate protein expression with clinical symptoms in chronic rhinosinusitis with nasal polyps (CRSwNP) and without (CRSsNP).
  • To explore a potential link between CNPase and TGFβ1/Smad signaling in CRS pathogenesis.

Main Methods:

  • Immunohistochemistry was used to analyze protein expression in sinus epithelial tissues.
  • Patient groups included CRSwNP (n=20), CRSsNP (n=23), and non-CRS controls (n=8).
  • Expression levels of Smad2, pSmad3, TGFβ1, and CNPase were quantified and compared across groups.

    • Main Results:

    • Smad2 expression was higher in CRSsNP than CRSwNP and controls.
    • pSmad3 and TGFβ1 expression were elevated in CRSwNP compared to controls.
    • CNPase expression was decreased in CRSsNP compared to controls, with novel detection in upper airway epithelium.

    Conclusions:

    • Altered expression of Smad2, pSmad3, TGFβ1, and CNPase is observed in CRS.
    • A potential synergistic role between CNPase and TGFβ1/Smad signaling in CRS pathogenesis is proposed.
    • Further research is needed to elucidate the function of CNPase in upper airway chronic inflammation.