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维生素D3;胆骨化醇 | Vitamin D3 - MedChemExpress
2022年11月24日 09:01   化工产品  

关键词:维生素D3;胆骨化醇

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维生素D3;胆骨化醇

CAS No. : 67-97-0

MCE 国际站:Vitamin D3

产品活性:Vitamin D3 (Cholecalciferol; Colecalciferol) 是维生素 D 的天然存在形式,代谢激活后能诱导细胞分化和癌细胞增殖。

研究领域:Vitamin D Related  |  Metabolic Enzyme/Protease

作用靶点:VD/VDR  |  Endogenous Metabolite

结构分类:其他类

In Vitro: Vitamin D3 is an inactive vitamin D molecule in vivo. Vitamin D3 undergoes two hydroxylation processes to activate it. Vitamin D3 is first hydroxylated in the liver to form the circulating prohormone 25-hydroxy vitamin D3 [25(OH)D3] by the enzyme 25-hydroxylase (CYP27A1) and probably also by other enzymes (e.g., CYP2R1).
The second hydroxylation occurs in the kidneys via the enzyme 1-alpha-hydroxylase, yielding 1,25- dihydroxycholecalciferol (calcitriol), which is the biologically active form of vitamin D.
Vitamin D3 (2-10 μM; 24-48 hours) exhibits anti-proliferative effects in a dose- and time- dependent manner. Maximal reduction of viability post treatment of 62% (IK), 52% (RL-95-2), and 55% (Hec-1A) occurrs by 72 h of treatment with 10 μM Vitamin D3. but 24-hour exposure lacks significant reduction in viable cells.
Cholecalciferol (10 μM; 24-48 hours) shows marked increases in nuclear VDR staining and produces local VDR activation in IK cells.

In Vivo: Cholecalciferol (oral gavage; 5 mg/kg; 7 days) potentiates the CCl4 toxicity only in the liver, as indicated by plasma levels of ALT and AST, biochemical markers of hepatic damage. It significantly increases renal calcium levels in mice, but renal calcium content does not differ significantly between mice.

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