Oka T, Topper Y J
Proc Natl Acad Sci U S A. 1974 May;71(5):1630-3. doi: 10.1073/pnas.71.5.1630.
Insulin-like material can be extracted from insulin-Sepharose. This soluble material elicits super-insulin responses from mammary epithelial cells. It stimulates the accumulation of alpha-aminoisobutyric acid by virgin mouse mammary cells, which are unresponsive to insulin itself. It exerts a greater stimulatory effect on mammary cells from pregnant mice than insulin. It also is more efficacious than insulin as a stimulant of DNA synthesis and the combined activities of glucose-6-phosphate dehydrogenase (EC 1.1.1.49) and phosphogluconate dehydrogenase (EC 1.1.1.43). Its specific biological activity on these cells is more than five times greater than that of insulin.
胰岛素样物质可从胰岛素-琼脂糖中提取。这种可溶性物质能引发乳腺上皮细胞的超胰岛素反应。它能刺激未对胰岛素本身产生反应的处女鼠乳腺细胞积累α-氨基异丁酸。它对怀孕小鼠的乳腺细胞的刺激作用比胰岛素更大。作为DNA合成以及葡萄糖-6-磷酸脱氢酶(EC 1.1.1.49)和磷酸葡萄糖酸脱氢酶(EC 1.1.1.43)联合活性的刺激剂,它也比胰岛素更有效。它对这些细胞的特定生物学活性比胰岛素高五倍以上。