Journal
ASIAN JOURNAL OF ANDROLOGY
Volume 13, Issue 1, Pages 88-96Publisher
WOLTERS KLUWER MEDKNOW PUBLICATIONS
DOI: 10.1038/aja.2010.74
Keywords
capacitation; fertilization; spermatozoa; sperm-zona pellucida interaction
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For mammalian spermatozoa to exhibit the ability to bind the zona pellucida (ZP) they must undergo three distinct phases of maturation, namely, spermatogenesis (testis), epididymal maturation (epididymis) and capacitation (female reproductive tract). An impressive array of spermatozoa surface remodeling events accompany these phases of maturation and appear critical for recognition and adhesion of the outer vestments of the oocyte, a structure known as the ZP. It is becoming increasingly apparent that species-specific zona adhesion is not mediated by a single receptor. Instead, compelling evidence now points toward models implicating a multiplicity of receptor-ligand interactions. This notion is in keeping with emerging research that has shown that there is a dynamic aggregation of proteins believed to be important in sperm-ZP recognition to the regions of sperm that mediate this binding event. Such remodeling may in turn facilitate the assembly of a multimeric zona recognition complex (MZRC). Though formation of MZRCs raises questions regarding the nature of the block to polyspermy, formation and assembly of such a structure would no doubt explain the strenuous maturation process that sperm endure on their sojourn to functional maturity. Asian Journal of Andrology (2011) 13, 88-96; doi: 10.1038/aja.2010.74; published online 1 November 2010
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