HST-1/FGF-4 gene activation induces spermatogenesis and prevents adriamycin-induced testicular toxicity
Autor: | Teruaki Iwamoto, Kotaro Hirai, Masaaki Terada, Yasushi Takahama, Hideo Sasaki, Hiromi Sakamoto, Tadao Kakizoe, Hiroyasu Toriyama-Baba, Takahiro Ochiya, Shoujiro Tamamushi, Hanako Yamamoto, Izumu Saito |
---|---|
Rok vydání: | 2002 |
Předmět: |
Male
Transcriptional Activation Genetically modified mouse Cancer Research Recombinant Fusion Proteins Transgene Genetic enhancement Genetic Vectors Fibroblast Growth Factor 4 Cre recombinase Antineoplastic Agents Mice Transgenic Biology Adenoviridae Mice Viral Proteins Proto-Oncogene Proteins Testis Genetics Animals Humans RNA Messenger Spermatogenesis Molecular Biology Regulation of gene expression Sertoli Cells Integrases Sperm Count Genetic transfer Age Factors DNA Organ Size Aneuploidy Molecular biology Fibroblast Growth Factors Mice Inbred C57BL Gene Expression Regulation Doxorubicin Cancer research Signal transduction |
Zdroj: | Oncogene. 21:899-908 |
ISSN: | 1476-5594 0950-9232 |
DOI: | 10.1038/sj.onc.1205135 |
Popis: | We previously demonstrated expression of the HST-1/FGF-4 gene in the testis of normal adult animals, which suggests its possible role in spermatogenesis. For an understanding of its functional significance in the testis, conditional transgene expression was used. Precise genetic switches can be efficiently generated in a straightforward manner using adenovirus-carrying Cre recombinase, which means our new strategies promise to contribute substantially to a better and prompt understanding of the functions of genes in vivo by controlling the expression of any gene to any organ at any desired time. Our new method demonstrated for the first time that the specific gain of function of the HST-1/FGF-4 gene in the testis resulted in markedly enhanced spermatogenesis. To further investigate the function and therapeutic potency of HST-1/FGF-4, transgenic mice with enhanced HST-1/FGF-4 expression in the testis were exposed to adriamycin (ADR), an anticancer drug causing severe testicular toxicity. Degree of damage to spermatogenesis was assessed by sperm count, testicular weight, histology, and DNA ploidy. Induced expression of HST-1/FGF-4 markedly enhanced the recovery of ADR-induced testicular damage. Furthermore, adenoviruses carrying the HST-1/FGF-4 gene ameliorated testicular toxicity of ADR. These results with new adenovirus-mediated Cre/lox conditional mice indicated that HST-1/FGF-4 could be an important factor for spermatogenesis, presenting a new paradigm to treat impaired fertility. |
Databáze: | OpenAIRE |
Externí odkaz: |