The mechanisms underlying normal spermatogenesis and its pathology expressed as male sterility determined by t-complex located on chromosome 17 in mice are considered in this review. t-Complex is a very convenient model with diverse markers of expression of the genes involved in development of the functional features of the spermatozoa bearing t-complex. These features include defects of mobility, capacitation, and acrosome reactions, which determine full or partial male sterility. It has been proposed that the defects of capacitation are also inherent in humans and affect male fertility. This homology is confirmed by the presence of the male gene Tcp11 in humans and demonstration of the fact that the protein TCP11 plays a leading role in modulation of the capacitation of murine spermatozoa. Hence it follows that the defects of human genes leading to incomplete binding of the fertilization promoting peptide could play a certain role in a decreased male fertility. All this is essential not only for deeper understanding of the biology of spermatozoa, but also for development of new therapeutic methods of finding and treating the pathology of spermatozoa.
Russian Journal of Developmental Biology – Springer Journals
Published: Oct 13, 2004
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