A-MYB (MYBL1) transcription factor is a master regulator of male meiosis.
Document Type
Article
Publication Date
2011
Keywords
Animals, DNA-Breaks-Double-Stranded, Female, Gene-Expression-Profiling, Gene-Expression-Regulation-Developmental, Humans, Infertility-Male, Male, Meiosis, Mice-Inbred-C3H, Mice-Inbred-C57BL, Microarray-Analysis, Molecular-Sequence-Data, Mutation, Pachytene-Stage, Proto-Oncogene-Proteins-c-myb, Sequence-Alignment, Spermatocytes, Spermatogenesis, Trans-Activators, Transcription-Factors, Transcription-Genetic
JAX Source
Development 2011; 138(15):3319-30.
First Page
3319
Last Page
3330
Abstract
The transcriptional regulation of mammalian meiosis is poorly characterized, owing to few genetic and ex vivo models. From a genetic screen, we identify the transcription factor MYBL1 as a male-specific master regulator of several crucial meiotic processes. Spermatocytes bearing a novel separation-of-function allele (Mybl1(repro9)) had subtle defects in autosome synapsis in pachynema, a high incidence of unsynapsed sex chromosomes, incomplete double-strand break repair on synapsed pachytene chromosomes and a lack of crossing over. MYBL1 protein appears in pachynema, and its mutation caused specific alterations in expression of diverse genes, including some translated postmeiotically. These data, coupled with chromatin immunoprecipitation (ChIP-chip) experiments and bioinformatic analysis of promoters, identified direct targets of MYBL1 regulation. The results reveal that MYBL1 is a master regulator of meiotic genes that are involved in multiple processes in spermatocytes, particularly those required for cell cycle progression through pachynema.
Recommended Citation
Bolcun-Filas E,
Bannister LA,
Barash A,
Schimenti KJ,
Hartford SA,
Eppig JJ,
Handel MA,
Shen L,
Schimenti JC.
A-MYB (MYBL1) transcription factor is a master regulator of male meiosis. Development 2011; 138(15):3319-30.