Journal
PROTEOMICS CLINICAL APPLICATIONS
Volume 2, Issue 12, Pages 1651-1657Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/prca.200780120
Keywords
Human samples; Proteomics; Testis
Funding
- 973 program [2006CB504002, 2006CB944002]
- Chinese Natural Science Funds [30630030, 30425006]
- Program of Changjiang Scholars
- Innovative Research Team in University [IRT0631]
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The testis is a unique organ responsible for sperm production and androgen secretion in men. To analyze the human testis proteome on a large scale, 1-D SDS-PAGE and RP-LC-MS/MS were applied and 1430 proteins in the human testis were identified. Both the false-positive rate of peptides and protein identification confidence scores were calculated in the present study. Subsequent bioinformatics analysis of the human testis proteome revealed 39 testis-specific proteins which may be important for testis functions. And a large family of proteins were identified possibly involved in alternative splicing, which may also be involved in testis-specific splicing events and explain why splicing is so prevalent in the testis. Compared with the studies on brain proteome, researches on the testis proteome is still very limited. Studies of these proteins will give a better understanding on the function of the testis. Moreover, this large-scale identification of testis proteins in humans could serve as a reference for future studies on the mechanisms underlying male infertility, searching for potential contraceptive targets, and developing new treatments for testis cancer.
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