BLOCK OF CA2+ WAVE AND CA2+ OSCILLATION BY ANTIBODY TO THE INOSITOL 1,4,5-TRISPHOSPHATE RECEPTOR IN FERTILIZED HAMSTER EGGS

被引：477

作者：

MIYAZAKI, S

YUZAKI, M

NAKADA, K

SHIRAKAWA, H

NAKANISHI, S

NAKADE, S

MIKOSHIBA, K

机构：

[1] JICHI MED SCH, DEPT BIOCHEM, MINAMI KAWACHI, TOCHIGI 32904, JAPAN

[2] OSAKA UNIV, INST PROT RES, DIV REGULAT MACROMOLEC FUNCT, SUITA, OSAKA 565, JAPAN

[3] UNIV TOKYO, INST MED SCI, DEPT MOLEC NEUROBIOL, MINATO KU, TOKYO 108, JAPAN

来源：

SCIENCE | 1992年 / 257卷 / 5067期

关键词：

D O I：

10.1126/science.1321497

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The concentration of cytoplasmic free calcium (Ca2+) increases in various stimulated cells in a wave (Ca2+ wave) and in periodic transients (Ca2+ oscillations). These phenomena are explained by inositol 1,4,5-trisphosphate (IP3)-induced Ca2+ release (IICR) and Ca2+-induced Ca2+ release (CICR) from separate intracellular stores, but decisive evidence is lacking. A monoclonal antibody to the IP3 receptor inhibited both IICR and CICR upon injection of IP3 and Ca2+ into hamster eggs, respectively. The antibody completely blocked sperm-induced Ca2+ waves and Ca2+ oscillations. The results indicate that Ca2 release in fertilized hamster eggs is mediated solely by the IP3 receptor, and Ca2+-sensitized IICR, but not CICR, generates Ca2+ waves and Ca2+ oscillations.

引用

页码：251 / 255

页数：5

共 30 条

[21] TEMPORAL AND SPATIAL DYNAMICS OF THE PERIODIC INCREASE IN INTRACELLULAR FREE CALCIUM AT FERTILIZATION OF GOLDEN-HAMSTER EGGS [J].