Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis.

Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis. Research Abstract Details 

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Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis. Abstract Text:

Ming Zhao,Jan Rohozinski,Manju Sharma,Jun Ju,Robert E Braun,Colin E Bishop,Marvin L Meistrich,

The mouse retrogene Utp14b is essential for male fertility, and a mutation in its sequence results in the sterile juvenile spermatogonial depletion (jsd) phenotype. It is a retrotransposed copy of the Utp14a gene, which is located on the X chromosome, and is inserted within an intron of the autosomal acyl-CoA synthetase long-chain family member 3 (Acsl3) gene. To elucidate the roles of the Utp14 genes in normal spermatogenic cell development as a basis for understanding the defects that result in the jsd phenotype, we analyzed the various mRNAs produced from the Utp14b retrogene and their expression in different cell types. Two classes of transcripts were identified: variant 1, a transcript driven by the host gene promoter, that is predominantly found in germ cells but is ubiquitously expressed at low levels; and variants 2-5, a group of alternatively spliced transcripts containing some unique untranslated exons that are transcribed from a novel promoter that is germ-cell-specific. Utp14b (predominantly variant 1) is expressed at moderately high levels in pachytene spermatocytes, the developmental stage at which the expression of the X-linked Utp14a is suppressed. The levels of both classes of Utp14b transcripts were highest in round spermatids despite the transcription of Utp14a in these cells. We propose that when Utp14b initially inserted into Acsl3, it utilized the Acsl3 promoter to drive expression in pachytene spermatocytes to compensate for inactivation of Utp14a expression. The novel cell-type-specific promoter for Utp14b likely evolved later, as the protein may have acquired a germ cell-specific function in spermatid development.

Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis. Publishing Authors By Initials

M Zhao,J Rohozinski,M Sharma,J Ju,RE Braun,CE Bishop,ML Meistrich,

For similar cells: cellular structures: chromosomes: sex chromosomes: x chromosome research abstracts see: cells: cellular structures: chromosomes: sex chromosomes: x chromosome research

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Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Developmental biology

VOLUME: 304

Page Numbers: 848-59

Journal Abbreviation:

ISSN: 0012-1606

DAY: 9

MONTH: 01

YEAR: 2007

Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis. Information

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LANGUAGE: eng

NlmUniqueID: 372762

Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis. Keywords Mesh Terms:

KEYWORDS: X Chromosome

MESH TERMS: genetics

Chemical & Substance for Abstract: Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis. Information

Substance Name: Utp14b protein, mouse

Registry Number: 0

Grant and Affiliation Information for Utp14b: a unique retrogene within a gene that has acquired multiple promoters and a specific function in spermatogenesis.

AFFILIATION: Department of Experimental Radiation Oncology, University of Texas M.D. Anderson Cancer Center, Box 066, 1515 Holcombe Blvd, Houston, TX 77030, USA.

Country: United States

AGENCY: United States NICHD

GRANT: R01 HD040397-05

ACRONYM: HD

MEDLINETA: Dev Biol

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