PLASMA-CLEARANCE, ORGAN DISTRIBUTION AND TARGET-CELLS OF INTERLEUKIN-6 HEPATOCYTE-STIMULATING FACTOR IN THE RAT

被引:302
作者
CASTELL, JV
GEIGER, T
GROSS, V
ANDUS, T
WALTER, E
HIRANO, T
KISHIMOTO, T
HEINRICH, PC
机构
[1] UNIV FREIBURG, INST BIOCHEM, HERMANN HERDER STR 7, D-7800 FREIBURG, FED REP GER
[2] UNIV FREIBURG, MED KLIN 1, D-7800 FREIBURG, FED REP GER
[3] OSAKA UNIV, INST MOLEC & CELLULAR BIOL, OSAKA, JAPAN
来源
EUROPEAN JOURNAL OF BIOCHEMISTRY | 1988年 / 177卷 / 02期
关键词
D O I
10.1111/j.1432-1033.1988.tb14384.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The plasma half-life of recombinant human interleukin-6 (rhIL-6) was determined in rats by measuring the disappearance of the biological activity as well as of the radioactivity of 125I-rhIL-6 from the circulation. The kinetics of clearance were biphasic. It consisted of a rapid initial disappearance corresponding to a half-life of 3 min, and of a second slow one corresponding to a half-life of about 55 min. By cellulose-acetate electrophoresis it was shown that rhIL-6 binds to a plasma protein resulting in a complex migrating in the .beta.-.gamma. region; 20 min after intravenous injection, about 80% of the 125I-rhIL-6 that had disappeared from the circulation was found in the liver. 125I-rhIL-6 was exclusively localized on the surface of parenchymal cells suggesting the existence of an interleukin-6 receptor on the hepatocytes.
引用
收藏
页码:357 / 361
页数:5
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