Vitamin D3 induces stem cell activation via Lgr5-Bmi1 expression and improving mouse colitis histology index

Narra J Pub Date : 2023-11-13 DOI:10.52225/narra.v3i3.430
Satrio Wibowo, Almira Pramadhani, Krisni Subandiyah, K. Handono, S. Poeranto
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Abstract

Conventional therapy for inflammatory bowel disease using long-term anti-inflammatory drugs does not seem to provide optimal results. Adjuvant therapy using vitamin D3 is believed to have an essential role in repairing the colonic mucosa through the activation of colonic stem cells. The aim of this study was to demonstrate the effect of vitamin D3 in mucosal repair through stem cell activation, marked by leucin-rich repeat-containing G protein-coupled receptor 5 (Lgr5) and B lymphoma Mo-MLV insertion region 1 (Bmi1) expression and decrease the mouse colitis histology index (MCHI) score. In this study, 50 Mus musculus strain BALB/c were divided into five groups: negative control group, colitis group, and colitis groups with vitamin D3 administration of 0.2 mcg, 0.4 mcg, and 0.6 mcg per 25 g body weight for seven days. Dextran sulfate sodium (DSS) 5% was used to induce colitis. Lgr5-Bmi1 expression was measured using immunodoublestain fluorescent labeling method. Our data suggested that administration of vitamin D3 significantly increased expression of Lgr5-Bmi1 in the colonic mucosa. The colitis group treated with the highest dose of vitamin D3 (0.6 mcg/25 gram) showed the lowest MCHI score (3.60±0.64) while the lowest dose of vitamin D3 had the highest MCHI score (12.60±1.47). In conclusion, stimulating stem cells, vitamin D3 administration stimulates mucosal regeneration, as demonstrated by upregulated expression of Lgr5-Bmi-1.
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维生素 D3 通过 Lgr5-Bmi1 表达诱导干细胞活化,改善小鼠结肠炎组织学指数
长期使用抗炎药物治疗炎症性肠病的传统疗法似乎无法取得最佳效果。使用维生素 D3 的辅助疗法被认为在通过激活结肠干细胞修复结肠粘膜方面发挥着重要作用。本研究旨在证明维生素D3通过干细胞活化对粘膜修复的作用,其标志是富含亮蛋白重复的G蛋白偶联受体5(Lgr5)和B淋巴瘤Mo-MLV插入区1(Bmi1)的表达,并降低小鼠结肠炎组织学指数(MCHI)的评分。本研究将 50 只小鼠品系 BALB/c 分成五组:阴性对照组、结肠炎组和结肠炎组,每 25 克体重分别给予 0.2 微克、0.4 微克和 0.6 微克的维生素 D3,连续七天。使用 5%右旋糖酐硫酸钠(DSS)诱导结肠炎。用免疫印迹荧光标记法测定 Lgr5-Bmi1 的表达。我们的数据表明,服用维生素 D3 能显著增加结肠粘膜中 Lgr5-Bmi1 的表达。使用最高剂量维生素D3(0.6微克/25克)治疗的结肠炎组的MCHI评分最低(3.60±0.64),而使用最低剂量维生素D3治疗的结肠炎组的MCHI评分最高(12.60±1.47)。总之,维生素D3可刺激干细胞,通过上调Lgr5-Bmi-1的表达,刺激粘膜再生。
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