Isfahan University of Medical Sciences

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Toll-Like Receptor 7 a Novel Non-Invasive Inflammatory Genetic Sensor for Ulcerative Colitis Remission Monitoring Publisher

Summary: TLR-7 expression rises during UC flare-ups, indicating its potential as a non-invasive monitoring tool. Could it lead to better UC patient management? #IBD #Immunology

Asadzadehaghdaei H ; Rejali L ; Nourian M ; Chaleshi V ; Zamani N ; Ghavami S ; Nemati M ; Shahrokh S ; Norouzinia M ; Vosough M ; Nazemalhosseinimojarad E ; Zali M
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Source: Advanced Biomedical Research Published:2023


Abstract

Background: Ulcerative colitis (UC) and Crohn's disease (CD) are two major types of inflammatory bowel diseases (IBDs). Toll-like receptors (TLRs) are expressed in the innate immune system compartments, in charge of identifying a wide range of microorganisms. The aim of the present study was to evaluate the expression of TLR-2, -7, and -8 in peripheral blood mononuclear cells (PBMC) of UC patients as a novel non-invasive primary inflammation sensor for monitoring the clinical course of UC candidates. Materials and Methods: In this cross-sectional study, total RNA was extracted from the PBMC of 42 UC patients along with 20 healthy donors. The mRNA levels of TLR-2, -7, and -8 were assessed using the quantitative real-time polymerase chain (qRT-PCR) reaction. Results: The present research study demonstrated no significant changes in TLR-2 mRNA expression in UC patients in comparison with the control group (P = 0.1264), whereas significant elevation (P = 0.0008) was distinguished in the TLR-7 expression of UC participants specifically during the remission course compared with healthy donors and flareup patients (P = 0.0004 and P = 0.0063, respectively). The last selected TLR, TLR-8 was not shown remarkable changes either between UC patients and the control group or between clinical courses of the disease. Conclusion: Here, among three nominated TLRs for predicting UC patients, TLR-7 was potentially selected according to the significant difference in mRNA expression in flareup UC patients and control donors. TLR-7 could be used as a novel non-invasive biomarker for monitoring UC patients in the active course of the disease. © 2023 Elsevier B.V., All rights reserved.
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