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- W1963555441 abstract "In an effort to improve in vitro spermatogenesis by potentiating the interactions between developing germ cells, somatic cells, and the extracellular matrix (ECM), the efficiency of the germ cell-somatic cell coculture in a three-dimensional (3D) collagen gel matrix was examined. Cells isolated from rat seminiferous tubules 18 days after birth were cultured for 22 days in a monolayer without ECM, collagen gel (CG), or collagen+Matrigel (CGM). After culture, the viabilities of the cultured cells in the monolayer, CG, and CGM culture were 42.8%, 70.7% and 76.1%, respectively. Occludin-positive cells in a cyst-like structure were found in the ECM gel matrix together with 3β hydroxysteroid dehydrogenase-positive cells, suggesting the presence of functional Sertoli cells and Leydig cells, respectively. Flow cytometric analysis of DNA content revealed a significant increase in the haploid cell population in the CG and CGM compared to the monolayer culture. Transition protein 2 (TP2) and protamine 2-positive cells were found together with a significant increase in TP2 mRNA levels in cells cultured in CG and CGM over those in monolayer culture, suggesting the occurrence of the post-meiotic differentiation of spermatogenetic cells. Taken together, a 3D in vitro culture system for testicular cells using a collagen gel matrix could enhance viability, meiosis, and post-meiotic differentiation of germ cells to presumptive differentiating spermatids." @default.
- W1963555441 created "2016-06-24" @default.
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- W1963555441 date "2006-05-01" @default.
- W1963555441 modified "2023-10-11" @default.
- W1963555441 title "In vitro spermatogenesis by three-dimensional culture of rat testicular cells in collagen gel matrix" @default.
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- W1963555441 doi "https://doi.org/10.1016/j.biomaterials.2005.12.028" @default.
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