Exploring the Role of Thy-1 and Its Soluble Form Regarding Fibrosis Severity in Primary Biliary Cholangitis and Metabolic Dysfunction-Associated Fatty Liver Disease

IF 1.7 Q3 GASTROENTEROLOGY & HEPATOLOGY

JGH Open Pub Date : 2025-04-09 DOI:10.1002/jgh3.70155

Mirjam Kolev, Rahel Bütikofer, Anja Saalbach, Florian Kollert, Matteo Montani, Nasser Semmo

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Abstract

Background and Aim

Portal myofibroblasts (PMF) are known to be critical in bile duct injury, but their role in liver fibrogenesis remains underexplored. Thy-1, an adhesion molecule detected as soluble Thy-1 (sThy-1) in serum, is primarily expressed by portal myofibroblasts (PMF) and, to a lesser extent, hepatic stellate cells (HSC), serving as a marker for myofibroblast activity in liver pathology. This study aimed to elucidate the correlation between Thy-1 expression in liver histology and sThy-1 levels in serum with the degree of liver fibrosis in patients with primary biliary cholangitis (PBC) and metabolic dysfunction-associated steatotic liver disease (MASLD).

Methods

Liver histology samples were stained for Thy-1, and sThy-1 was measured using an enzyme-linked immunosorbent assay (ELISA).

Results

In patients with PBC and MASLD, an association between portal Thy-1 expression and the extent of fibrosis was observed. Notably, while sinusoidal Thy-1 expression aligned with fibrosis severity in PBC (p < 0.001), this association was not statistically significant in MASLD (p = 0.059). Moreover, variations in soluble Thy-1 levels paralleled the progression from mild to advanced fibrosis stages in PBC.

Conclusions

Thy-1 expression levels were associated with the severity of fibrosis, which could support its role in monitoring the presence and activity of myofibroblasts in liver diseases.

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