JARB Journal of Animal Reproduction and Biotehnology

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Journal of Embryo Transfer 2001; 16(1): 61-68

Published online April 30, 2001

Copyright © The Korean Society of Animal Reproduction and Biotechnology.

Role of Acrosomal Matrix in Mammalian Fertilization

K.S.Kim and George L. Gerton

College of Medicine, PochonCHA University

Abstract

Sperm competent for fertilization can become capacitated, bind to the zona pellucida (ZP) of an egg in a specific manner, and complete acrosomal exocytosis. Failure to carry out these functions results in infertility. Although the interactions between the ZP and the plasma mem-brane overlying the sperm acrosome have been considered important for sperm-egg recognition and signalling, recent results have prompted a reassessment of current paradigms concerning these interactions. In this review, we're going to discuss about the roles of the acrosomal matrix, the particulate component of the acrosomal contents, in fertilization. The general hypothesis is that acrosomal exocytosis leads to the exposure of acrosomal matrix proteins that become de-facto extracellular matrix (ECM) on the surface of the sperm head, and that the dynamic interactions of this newly-exposed sperm ECM with the egg ECM (the ZP) govern sperm-egg recognition and sperm penetration of the ZP Informations from these experiments may provide new ways to address the poor ZP binding of sperm from some human infertility patients and may offer new avenues for contraception through the disruption of purposeful sperm-ZP binding.

Keywords: sperm, acrosome reaction, acrosomal exocytosis, fertilization

Article

Journal of Embryo Transfer 2001; 16(1): 61-68

Published online April 30, 2001

Copyright © The Korean Society of Animal Reproduction and Biotechnology.

포유류 수정과정에서 정자 침체기질의 기능

김계성

포천중문의과대학교 세포유전자치료연구소,

Role of Acrosomal Matrix in Mammalian Fertilization

K.S.Kim and George L. Gerton

College of Medicine, PochonCHA University

Abstract

Sperm competent for fertilization can become capacitated, bind to the zona pellucida (ZP) of an egg in a specific manner, and complete acrosomal exocytosis. Failure to carry out these functions results in infertility. Although the interactions between the ZP and the plasma mem-brane overlying the sperm acrosome have been considered important for sperm-egg recognition and signalling, recent results have prompted a reassessment of current paradigms concerning these interactions. In this review, we're going to discuss about the roles of the acrosomal matrix, the particulate component of the acrosomal contents, in fertilization. The general hypothesis is that acrosomal exocytosis leads to the exposure of acrosomal matrix proteins that become de-facto extracellular matrix (ECM) on the surface of the sperm head, and that the dynamic interactions of this newly-exposed sperm ECM with the egg ECM (the ZP) govern sperm-egg recognition and sperm penetration of the ZP Informations from these experiments may provide new ways to address the poor ZP binding of sperm from some human infertility patients and may offer new avenues for contraception through the disruption of purposeful sperm-ZP binding.

Keywords: sperm, acrosome reaction, acrosomal exocytosis, fertilization

JARB Journal of Animal Reproduction and Biotehnology

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OPEN ACCESS pISSN: 2671-4639
eISSN: 2671-4663