Dutasteride,164656-23-9

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产品名称：Dutasteride

产品别名：度他雄胺

英文别名：GG 745;GI 198745

靶点：5-α reductase

CAS：164656-23-9

纯度：0.99

外观：白色或类白色结晶性粉末

保存方法：store at -20℃ for one year（Powder）； in DMSO or others solvent store at 2-4℃ for two weeks, at -20℃ for six months.

描述：

Dutasteride belongs to a class of drugs called 5-alpha-reductase inhibitors, which block the action of the 5-alpha-reductase enzymes that convert testosterone into dihydrotestosterone (DHT). Finasteride also belongs to this group, but while dutasteride inhibits both isoforms of 5-alpha reductase, finasteride inhibits only one. Even so, a clinical study done by GlaxoSmithKline, the EPICS trial, did not find dutasteride to be more effective than finasteride in treating BPH.

溶解性：DMSO : 58 mg/mL (109.7 mM)
Ethanol : 6 mg/mL (11.35 mM)

体外研究：

Dutasteride inhibits type-1 R and type-2 R with IC50 of 6 nM and 7 nM, respectively. Dutasteride is 60-fold more potent than Finasteride in its initial Ki versus type 1 R and ~5-fold more rapid in inactivating the enzyme. Dutasteride inhibits (3)H-T conversion to (3)H-DHT and, as anticipated, inhibits T-induced secretion of PSA and proliferation in LNCaP cells. Dutasteride also inhibits DHT-induced PSA secretion and cell proliferation with IC50 of 1 μM in LNCaP cells. Dutasteride competes for binding the LNCaP cell AR with an IC50 of 1.5 μM. Dutasteride (10–50 μM) results in enhanced cell death, possibly by apoptosis, in steroid-free medium. Dutasteride reduces cell viability and cell proliferation in androgen-responsive (LNCaP) and androgen-unresponsive (DU145) human prostate cancer(PCa) cell lines. Dutasteride results in overexpressed genes included genes encoding for proteins involved in biosynthesis and metabolism of androgen (HSD17B1;HSD17B3;CYP11B2), androgen receptor and androgen receptor co-regulators (AR;CCND1), and signal transduction(ERBB2; V-CAM; SOS1) whereas, underexpressed genes (KLK3; KLK2; DHCR24) are androgen-regulated genes (ARGs) in androgen-responsive (LNCaP) cell. Dutasteride inhibits FASN mRNA, protein expression and enzymatic activity in prostate cancer cells.

体内研究：Dutasteride (100 mg/kg/day) has prostates about half as large as those in intact male rats treated with vehicle alone. Dutasteride is orally bioavailable and because of its mechanism of action it easily overcomes the potential liability of being >99% plasma protein bound.

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