Fibroblast pentose phosphate pathway activation upon decreased circPLCE1 exacerbates intestinal fibrosis in Crohn’s disease
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By
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May 1, 2026
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1
Activation of the pentose phosphate pathway (PPP) in fibroblasts is a key feature of intestinal fibrosis in Crohn's disease.
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2
Xylulokinase (XYLB) generates xylulose-5-phosphate (Xu5P), which promotes collagen synthesis in fibrotic fibroblasts.
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3
CircPLCE1 downregulation in fibroblasts leads to increased PPP activation and collagen production during intestinal fibrogenesis.
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4
CircPLCE1 interacts with XYLB, inhibiting its activity and regulating the PPP and fibrogenesis in intestinal fibrosis.
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The circPLCE1/XYLB/Xu5P axis presents a novel therapeutic target for treating intestinal fibrosis in Crohn's disease.