In:
Journal of Biological Rhythms, SAGE Publications, Vol. 28, No. 3 ( 2013-06), p. 208-217
Abstract:
Mice homozygous for a dominant-negative allele of the Clock gene ( Clock Δ 19/Δ 19 ) have slightly but significantly decreased male fertility. The molecular mechanism for this reduction in fertility is unknown. In the present study, we used a small hairpin RNA (shRNA) strategy to specifically knock down the Clock gene expression in the testes of male mice and determined its effect on male fertility. Clock knockdown led to smaller litter size, a lower in vitro fertility rate, lower blastula formation rate, and lower acrosin activity of the knockdown sperm. Locomotor activity analysis of the Clock knockdown mice revealed that Clock knockdown in testes did not alter their circadian rhythm. Taken together, these results provide the first evidence that Clock gene expression in round spermatids is essential for maintaining male reproductivity and suggest that acrosin may be a novel regulatory target of the Clock gene that would regulate the fertilization and early embryonic development to blastula. These findings may provide new clues for development of novel male contraceptive strategies.
Type of Medium:
Online Resource
ISSN:
0748-7304
,
1552-4531
DOI:
10.1177/0748730413486873
Language:
English
Publisher:
SAGE Publications
Publication Date:
2013
detail.hit.zdb_id:
2018064-0
SSG:
12
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