Sitagliptin phosphate monohydrate

Sitagliptin phosphate monohydrate (MK-0431 phosphate monohydrate) 是一种有效的 DPP4 抑制剂，在 Caco-2 细胞提取物中的 IC50 为 19 nM。

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货号: ajci4838
CAS: 654671-77-9
别名: 西他列汀磷酸盐一水合物; MK-0431 phosphate monohydrate
分子式: C16H15F6N5O.H3PO4.H2O
分子量: 523.3
纯度: >98%
溶解度: ≥ 23.8 mg/mL in DMSO, ≥ 30.6 mg/mL in Water with ultrasonic
储存: Store at -20°C
库存: 现货

Background

Sitagliptin phosphate monohydrate is a potent inhibitor of DPP4 with IC50 of 19 nM in Caco-2 cell extracts.

Sitagliptin phosphate exhibits a potent inhibitory effect on DPP-4 with IC50 of 19 nM from Caco-2 cell extracts[1].?Sitagliptin reduces in vitro migration of isolated splenic CD4 T-cells through a pathway involving cAMP/PKA/Rac1 activation[2].?A recent study demonstrates that sitagliptin exerts a novel, direct action in order to stimulate GLP-1 secretion by the intestinal L cell through a DPP-4-independent, protein kinase A- and MEK-ERK1/2-dependent pathway. It therefore reduces the effect of autoimmunity on graft survival[3].

In vivo, the ED50 value of sitagliptin phosphate for inhibition of plasma DPP-4 activity is calculated to be 2.3 mg/kg 7 hour postdose and 30 mg/kg 24 hour postdose in freely fed Han-Wistar rats[1].?The streptozotocin-induced type 1 diabetes mouse model exhibits elevated DPP-4 levels in the plasma that can be substantially inhibited in mice on an Sitagliptin phosphate diet. This is achieved by a positive effect on the regulation of hyperglycemia, potentially through prolongation of islet graft survival[4].?The plasma clearance and volume of distribution of Sitagliptin phosphate are higher in rats (40-48 mL/min/kg, 7-9 L/kg) than in dogs (9 mL/min/kg, 3 L/kg); and its half-life is shorter in rats,2 hours compared with 4 hours in dogs[5].

参考文献:
[1]. Thomas, L., et al. (R)-8-(3-amino-piperidin-1-yl)-7-but-2-ynyl-3-methyl-1-(4-methyl-quinazolin-2-ylm ethyl)-3,7-dihydro-purine-2,6-dione (BI 1356), a novel xanthine-based dipeptidyl peptidase 4 inhibitor, has a superior potency and longer duration of acti
[2]. Kim, S.J., et al., Dipeptidyl peptidase IV inhibition with MK0431 improves islet graft survival in diabetic NOD mice partially via T-cell modulation. Diabetes, 2009. 58(3): p. 641-51.
[3]. Sangle, G.V., et al., Novel biological action of the dipeptidylpeptidase-IV inhibitor, sitagliptin, as a glucagon-like peptide-1 secretagogue. Endocrinology, 2012. 153(2): p. 564-73.
[4]. Kim, S.J., et al., Inhibition of dipeptidyl peptidase IV with sitagliptin (MK0431) prolongs islet graft survival in streptozotocin-induced diabetic mice. Diabetes, 2008. 57(5): p. 1331-9.
[5]. Beconi, M.G., et al. Disposition of the dipeptidyl peptidase 4 inhibitor sitagliptin in rats and dogs. Drug Metab Dispos, 2007. 35(4): p. 525-32.

Protocol

Cell experiment [1]:
Cell lines	Endothelial progenitor cells (EPCs) and bone marrow mesenchymalstem cells(MSC)
Preparation method	The solubility of this compound in DMSO is >10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37 °C for 10 minutes and/or shake it in the ultrasonic bath for a while.Stock solution can be stored below -20°C for several months.
Reaction Conditions	14 d; 25 μmol/L
Applications	To determine whether sitagliptin treatment participated in enhancing the differentiation of EPCs and MSCs and cells expressing its ligand, SDF-1α, adipose tissues were co-cultured with sitagliptin (25 μmol/L) in M199 culture medium for 14 d and examined by flow cytometric analysis. The results show that compared with the 7 d cell culture, the numbers of EPCs [CD31/Sca-1+(double-stained) and CXCR4+ (single-stained)] were remarkably higher at day 14 in both the non-sitagliptin-treated (Si-T) group and the Si-T group
Animal experiment [2]:
Animal models	ApoE?/?mice with the C57BL/6 genetic background
Dosage form	200 mg/kg/day; oral taken
Applications	In ApoE?/?mice, the sitagliptin group showed fewer atherosclerotic plaques than in controls (7.64±1.98% [range 4.62–10.13%] vs 12.91±1.15% [range 11.55–14.37%], p
Other notes	Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.
参考文献: [1] Chua S, Sheu J J, Chen Y L, et al. Sitagliptin therapy enhances the number of circulating angiogenic cells and angiogenesis—evaluations< i> in vitroand in the rat critical limb ischemia model[J]. Cytotherapy, 2013, 15(9): 1148-1163. [2] Zeng Y, Li C, Guan M, et al. The DPP-4 inhibitor sitagliptin attenuates the progress of atherosclerosis in apolipoprotein-E-knockout mice via AMPK-and MAPK-dependent mechanisms[J]. Cardiovascular diabetology, 2014, 13(1): 32.