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Eur J Hum Genet. 2009 Nov;17(11):1463-70. doi: 10.1038/ejhg.2009.83. Epub 2009 May 27.

Expression of SNURF-SNRPN upstream transcripts and epigenetic regulatory genes during human spermatogenesis.

Author information

1
Institut für Humangenetik, Universitätsklinikum Essen, Germany.

Abstract

The imprinted domain in human 15q11-q13 is controlled by a bipartite imprinting centre (IC), which overlaps the 5' part of the paternally expressed SNURF-SNRPN gene. We have recently described two novel genes upstream of SNURF-SNRPN (PWRN1 and PWRN2), which are biallelically expressed in the testis. We have now found that PWRN1 represents an alternative 5' part of SNURF-SNRPN, and that its expression in the brain is imprinted. To determine when the locus is activated during spermatogenesis and which factors are involved in this process, we have mined gene-expression data of testicular biopsies from men with different types of spermatogenic failure. Whereas PWRN1-SNURF-SNRPN and PWRN2 are expressed in post-meiotic germ cells only, a hitherto undetected SNURF-SNRPN upstream transcript is expressed already at meiosis. Several epigenetic factors (eg, MBD1 and MBD2 isoforms, MBD3L1, SUVH39H2, BRDT, and EZH2) are upregulated at specific stages of spermatogenesis, suggesting that they play an important role in the epigenetic reprogramming during spermatogenesis.

PMID:
19471314
PMCID:
PMC2986690
DOI:
10.1038/ejhg.2009.83
[Indexed for MEDLINE]
Free PMC Article

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