AI Article Synopsis
- The study aimed to identify genes involved in spermatogenesis to better understand its molecular mechanisms.
- Methods included screening a cDNA library and various techniques to analyze gene expression and protein localization.
- Results showed the identification of RSD-7, a gene specific to rat testis, revealing its unique expression pattern and localization in Sertoli cells, paving the way for further functional studies.
Article Abstract
Objective: To isolate and identify the differentially expressed genes in spermatogenesis for the understanding molecular mechanism of spermatogenesis.
Methods: Screening of the cDNA library, Northern blot, expression and purification in E. coli with GST expression system, immunocytochemical staining of testis sections were used.
Results: (1) A cDNA fragment designated as RSD-7 was isolated from rat testis cDNA library. It was 1,238 bp in length, coding a protein of 232 amino acids with the GenBank accession number AF315467. The encoding protein of RSD-7 cDNA had a Ubiquitin-like domain. (2) Northern blot indicated that RSD-7 was uniquely expressed in rat testis, and in the testis RSD-7 emerged on the 30th postnatal day and expressed until 120th postnatal day. (3) Expression and purification of RSD-7 protein in E. coli with GST expression system and were used to obtain anti-RSD-7 antibody. (4) Immunolocalization of RSD-7 in rat testis revealed that it is expressed only in Sertoli cells.
Conclusions: Transcription pattern of RSD-7 and localization of RSD-7 protein in testis have been made, which established the base for the functional study of RSD-7.
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