Restricted expression of a member of the transcription elongation factor S-II family in testicular germ cells during and after meiosis

Journal of Biochemistry
Takashi UmeharaMasami Horikoshi

Abstract

Whether expression of transcription elongation factors is regulated during development has not been investigated, though genes encoding elongation factor S-II are transcribed in a tissue-specific manner. We investigated the expression profile of tissue-specific S-II during development using an isolated cDNA, termed mouse S-II-T1, whose transcripts are detected almost exclusively in testis. Three experiments were performed with various types of germ and somatic cells in testis to determine in which cells S-II-T1 is expressed. (1) Expression of S-II-T1 is markedly reduced in the testes of adult WBB6F1-W/Wv mutant mice which lack testicular germ cells, indicating its expression is specific to testicular germ cells. (2) The onset of mouse S-II-T1 mRNA appearance in testis is seen about 10-14 days after birth, which is consistent with the start of meiotic events, suggesting that S-II-T1 is not transcribed in premeiotic and early meiotic cells such as spermatogonia, leptotene spermatocytes, or zygotene spermatocytes. (3) Mouse S-II-T1 transcripts accumulate in meiotic pachytene spermatocytes and are detected in postmeiotic haploid cells such as round and elongated spermatids during spermatogenesis, as shown by fractionation of testic...Continue Reading

Citations

Mar 21, 2000·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·M Wind, D Reines
Apr 18, 2000·Experimental Gerontology·J GrillariH Katinger
May 11, 2011·Cold Spring Harbor Perspectives in Biology·Helen White-Cooper, Irwin Davidson
Jul 27, 2000·Molecular and Cellular Biology·J K Davie, C M Kane
May 2, 2006·Genetics·Rachel N FishC M Kane
Jun 20, 2012·Developmental Dynamics : an Official Publication of the American Association of Anatomists·John C HerrigesXin Sun
Jul 5, 2003·The Journal of Biological Chemistry·Takashi Umehara, Masami Horikoshi
Jan 27, 1998·Genomics·Z A Weaver, C M Kane

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