title: Stability, delivery and functions of human sperm RNAs at fertilization.
abstract: Increasing attention has focused on the significance of RNA in sperm, in light of its contribution to the birth and long-term health of a child, role in sperm function and diagnostic potential. As the composition of sperm RNA is in flux, assigning specific roles to individual RNAs presents a significant challenge. For the first time RNA-seq was used to characterize the population of coding and non-coding transcripts in human sperm. Examining RNA representation as a function of multiple methods of library preparation revealed unique features indicative of very specific and stage-dependent maturation and regulation of sperm RNA, illuminating their various transitional roles. Correlation of sperm transcript abundance with epigenetic marks suggested roles for these elements in the pre- and post-fertilization genome. Several classes of non-coding RNAs including lncRNAs, CARs, pri-miRNAs, novel elements and mRNAs have been identified which, based on factors including relative abundance, integrity in sperm, available knockout data of embryonic effect and presence or absence in the unfertilized human oocyte, are likely to be essential male factors critical to early post-fertilization development. The diverse and unique attributes of sperm transcripts that were revealed provides the first detailed analysis of the biology and anticipated clinical significance of spermatozoal RNAs.
authors.affiliation: Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA.
authors.forename: Edward
authors.initials: E
authors.lastname: Sendler
authors.forename: Graham D
authors.initials: GD
authors.lastname: Johnson
authors.forename: Shihong
authors.initials: S
authors.lastname: Mao
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Goodrich
authors.forename: Michael P
authors.initials: MP
authors.lastname: Diamond
authors.forename: Russ
authors.initials: R
authors.lastname: Hauser
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Krawetz
mesh_terms: D044127:Epigenesis, Genetic; D005306:Fertilization / Q000235:genetics; D006801:Humans; D008297:Male; D035683:MicroRNAs / Q000378:metabolism; D026723:Polyadenylation; D012313:RNA / Q000737:chemistry / Q000378:metabolism*; D059368:RNA Isoforms / Q000378:metabolism; D012322:RNA Precursors / Q000378:metabolism; D020871:RNA Stability; D058727:RNA, Small Untranslated / Q000378:metabolism; D017423:Sequence Analysis, RNA; D013094:Spermatozoa / Q000378:metabolism*; D013737:Testis / Q000378:metabolism
chemical_list: D035683:MicroRNAs; D059368:RNA Isoforms; D012322:RNA Precursors; D058727:RNA, Small Untranslated; D012313:RNA