Role of lncRNA MGP202 in Modulating B Cell Dynamics and Its Implications in Ulcerative Colitis

The upregulation of long noncoding RNA (lncRNA) MGP202 in ulcerative colitis (UC) patients suggests its potential significance in the disease. Understanding its role in UC pathogenesis and its impact on B cell dynamics is crucial for diagnostic and therapeutic advancements.

We investigated the expression and function of MGP202 in UC patients by examining its localization in colon specimens, performing knockdown and overexpression experiments in Raji B cells, and evaluating its interaction with hsa-miR-5590-3p. Furthermore, we explored the downstream effect on interleukin-33 (IL-33) expression.

We found elevated expression of MGP202 in UC patients compared to healthy controls. Knockdown of MGP202 impeded B cell proliferation, while overexpression enhanced it. Direct binding between MGP202 and hsa-miR-5590-3p was confirmed. IL-33 expression decreased with hsa-miR-5590-3p overexpression but increased with MGP202 overexpression. Increased IL-33 levels were detected in the colon mucosa of UC patients.

Our study reveals the upregulation of MGP202 in UC patients and its regulation of B cell proliferation through sponging hsa-miR-5590-3p and modulating IL-33 expression. These findings highlight MGP202 as a potential diagnostic and therapeutic target for UC, particularly in the context of B cell dynamics. Further investigations are warranted to evaluate clinical applicability and unravel additional mechanisms related to MGP202 modulation of B cell behavior in UC.