Pasireotide (SOM230) acetate 是一种长效的环己肽生长激素抑制素类似物，可以提高生长抑素受体的激动剂活性，对 sst1/2/3/4/5 的 pKi 分别为 8.2/9.0/9.1/<7.0/9.9。Pasireotide acetate 可以抑制 GH、IGF-I 和 ACTH 的分泌，可用于研究肢端肥大症和库欣病。Pasireotide acetate 还具有抗分泌、抗增殖和促凋亡活性。
Pasireotide (SOM230) acetate, a long-acting cyclohexapeptide somatostatin analogue, can improve agonist activity at somatostatin receptors (subtypes sst1/2/3/4/5, pKi=8.2/9.0/9.1/<7.0/9.9, respectively). Pasireotide acetate can suppress GH, IGF-I and ACTH secretion, indicating potential efficacy in acromegaly and Cushing’s disease. Pasireotide acetate also exhibits antisecretory, antiproliferative, and proapoptotic activity[1][2][3].
Pasireotide acetate exhibits unique high-affinity binding to human somatostatin receptors (subtypes sst1/2/3/4/5, pKi=8.2/9.0/9.1/<7.0/9.9, respectively)[1].Pasireotide acetate effectively inhibits the growth hormone releasing hormone (GHRH) induced growth hormone (GH) release in primary cultures of rat pituitary cells, with an IC50 of 0.4 nM[1].
Pasireotide acetate (160 mg/kg/mouth; s.c. for 4 months) significantly decreases the serum insulin, increases serum glucose, reduces the tumor size and increases apoptosis in Pdx1-Cre[2].Pasireotide acetate (2-50 μg/kg; s.c. twice daily for 42 days) exerts the antinociceptive and antiinflammatory actions via the SSTR2 receptor in a mouse model of immune-mediated arthritis[4].
[1]. Lewis I, et, al. A novel somatostatin mimic with broad somatotropin release inhibitory factor receptor binding and superior therapeutic potential. J Med Chem. 2003 Jun 5;46(12):2334-44.
[2]. Quinn TJ, et, al. Pasireotide (SOM230) is effective for the treatment of pancreatic neuroendocrine tumors (PNETs) in a multiple endocrine neoplasia type 1 (MEN1) conditional knockout mouse model. Surgery. 2012 Dec;152(6):1068-77.
[3]. Differential antiinflammatory and antinociceptive effects of the somatostatin analogs octreotide and pasireotide in a mouse model of immune-mediated arthritis. Imhof AK, et, al. Arthritis Rheum. 2011 Aug;63(8):2352-62.
[4]. Schmid HA, et, al. Pasireotide (SOM230): development, mechanism of action and potential applications. Mol Cell Endocrinol. 2008 May 14;286(1-2):69-74.
[5]. Imhof AK, et, al. Differential antiinflammatory and antinociceptive effects of the somatostatin analogs octreotide and pasireotide in a mouse model of immune-mediated arthritis. Arthritis Rheum. 2011 Aug;63(8):2352-62.
动态评分
0.0