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Differential Proteomic and Phospho-proteomic Analysis of Normal versus Failed Spermiation in Adult Rats by Label-Free LC-MS/MS | OMICS International | Abstract
ISSN: 2155-9872

Journal of Analytical & Bioanalytical Techniques
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Research Article

Differential Proteomic and Phospho-proteomic Analysis of Normal versus Failed Spermiation in Adult Rats by Label-Free LC-MS/MS

Rahul D Upadhyay1 , Amit Kumar Yadav2 , Shobha Sonawane1 , Reshma Goankar1 , Debasis Dash2 and BalasinorNH1*

1Department of Neuroendocrinology, National Institute for Research in Reproductive Health, J.M. Street, Parel, Mumbai, India

2CSIR-Institute of Genomics and Integrative Biology, South Campus, Mathura Road, SukhdevVihar, New Delhi, India

*Corresponding Author:
Balasinor NH, Ph.D
Scientist ‘E’, Departmrnt of Neuroendocrinology
National Institute for Research in Reproductive Health
J. M. Street, Parel, Mumbai-400012, India
Tel: 91-22-24192025/24192140
Fax: 91-22-24139412
E-mail: [email protected]

Received date: August 13, 2013; Accepted date: September 12, 2013; Published date: September 16, 2013

Citation: Upadhyay RD, Yadav AK, Sonawane S, Goankar R, Dash D (2013) Differential Proteomic and Phospho-proteomic Analysis of Normal versus Failed Spermiation in Adult Rats by Label-Free LC-MS/MS. J Anal Bioanal Tech 4:172. doi: 10.4172/2155-9872.1000172

Copyright: © 2013 Upadhyay RD, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Spermiation is the final step of spermatogenesis and involves release of mature spermatids from the Sertoli cells. It is a complex process involving displacement and removal of spermatid cytoplasm, formation and degradation of tubulobulbar complexes and progressive loss of adhesive junctions, including ectoplasmic specializations and subsequent phagocytosis of residual bodies by the Sertoli cell. Spermiation occurs in stage VIII of the rat seminiferous epithelium cycle. In spite of the important role played by spermiation process in sperm output to the epididymis, very little is known about this process. To enhance our knowledge of the sperm release biology, we sought to understand the molecular events occurring at the time of spermiation. Towards this aim, we induced spermiation failure condition by 17β estradiol treatment to adult male rats and compared with the normal spermiation. On comparing both the groups, we identified a total of 104 differentially expressed proteins and 23 differentially expressed phosphoproteins by LC-MS/MS analysis and quantitation. Localization and expression of some of the validated differential proteins in the testes highlight their importance during the sperm release. The present study represents an initial step to understand the molecular basis of the process of spermiation.


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