A study on insulin receptor on human hepatocellular cancer cell membrane / 中国普通外科杂志
Chinese Journal of General Surgery
;
(12)1997.
Artículo
en Chino
| WPRIM
| ID: wpr-519220
ABSTRACT
ObjectiveTo investigate the insulin receptor expression binding characteristics and it's clinical significance of 125 I insulin on human hepatocllular cancer cell membrane.MethodInsulin was radioiodinated using Ch T method, isolated and purified by polyacrylamide gel electryophresis. Human hepatocellular cancer and adjacent liver tissue cell membrane were extracted, receptor binding and bind ability of 125 I insulin and insulin receptor on hepatocellular cancer and adjacent hepatic cell membrane were studied. ResultsThe specific activity of 125 I insulin was 46 1?1 2 TBq/mmol,the radiochemical purity was over 98%. Insulin receptor content increased in hepatocellular carcinoma cells 〔Bmax=(1 9?0 6)?pmol/mg protein, the Kd of high and low affinity was 2 1?0 6?nmol and 25?8?nmol respectively〕 compared with carcinoma adjacent hepatic cells 〔Bmax=( 1 42? 0 57)?pmol/mg protein t =0 032 P 0 05〕.ConclusionHuman hepatocellular carcinoma cells overexpress insulin receptor. A14 125 I insulin has a specific high affinity with insulin receptor on HCC cells.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Idioma:
Chino
Revista:
Chinese Journal of General Surgery
Año:
1997
Tipo del documento:
Artículo
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