ArticleAntioxidants (Basel, Switzerland)2025
Scorpion Venom Heat-Resistant Synthetic Peptide Alleviates DSS-Induced Colitis via α7nAChR-Mediated Modulation of the JAK2/STAT3 Pathway.
Article in Antioxidants (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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10 authors.
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Abstract
backgroundInflammatory bowel disease (IBD) is a chronic relapsing inflammatory disorder with limited treatment options. Emerging evidence reveals bidirectional crosstalk between gut and brain through inflammatory signaling, leading us to hypothesize that anti-neuroinflammatory agents may concurrently ameliorate intestinal inflammation. The scorpion venom-derived heat-resistant synthetic peptide (SVHRSP), a bioactive peptide initially identified in scorpion venom and subsequently synthesized by our laboratory, possesses neuroprotective, anti-inflammatory, and antioxidative activities. Its properties make SVHRSP a promising candidate for investigating the therapeutic potential of anti-neuroinflammatory strategies in mitigating intestinal inflammation.
methodsUsing a chronic dextran sodium sulfate (DSS)-induced colitis model in wild-type and α7 nicotinic acetylcholine receptor (α7nAChR) knockout mice, along with lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages, we assessed SVHRSP's effects on inflammation, histopathology, gut permeability, oxidative stress markers, and α7nAChR-Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) signaling.
resultsSVHRSP treatment significantly ameliorated colitis symptoms in wild-type mice by reducing inflammation, repairing histological damage, restoring gut barrier function, and attenuating oxidative stress, with these effects abolished in α7nAChR knockout mice. Mechanistically, SVHRSP activated JAK2/STAT3 signaling through α7nAChR engagement, suppressing proinflammatory cytokine production in macrophages.
conclusionThese results demonstrated that SVHRSP alleviated intestinal inflammation via α7nAChR-dependent JAK2/STAT3 activation. Combined with its known neuroprotective properties, our findings support the repurposing of this neuroactive peptide, SVHRSP, for treating intestinal inflammatory disorders.
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