Dataset Information

Proteome analyses of sperm from wild type, Akap3 and Akap4 gene null mutant mice

ABSTRACT: PKA signaling plays important functions during mouse spermatogenesis and for the regulation of sperm motility. The efficiency of PKA signaling is regulated partly by its binding protein A-kinase anchoring protein (AKAP) family. Mature mouse sperm contain several AKAPs, of which AKAP3 and AKAP4 are localized in the principal piece of sperm tail and they are sperm-specific. Using gene knock-out mouse models, it was found that both AKAP3 and AKAP4 are essential for the formation of a complete fibrous sheath, the electron-dense sub-cellular structure within sperm flagellum that is important for the motility of sperm and male fertility. Lack of AKAP3 or AKAP4 caused aberrant sperm morphology and inmotility, leading to eventual male sterility. In the present study, we investigated the changes of cellular proteome in the absence of AKAP3 or AKAP4 in mature sperm, using quantitative mass spectrometry. It was found that global changes of sperm proteome occur in the absence of AKAP3 or AKAP4. In Akap3 null sperm, proteins related to flagella structure, PKA signaling and motility regulations are down-regulated, whereas proteins involved in RNA metabolism, protein translation and actin filaments formation are accumulated. Akap4 null sperm also displayed changes of sperm proteome at lesser extends. These results suggest that both AKAP3 and AKAP4 are essential for the formation of sperm sub-cellular structures, proper regulation of PKA activity and motility of sperm, providing new clues to elucidate the molecular pathways that underlie the coordinated synthesis and organization of sperm proteome and sperm morphology

INSTRUMENT(S): Q Exactive Plus

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Spermatozoon

SUBMITTER: Huayu Qi

LAB HEAD: Huayu Qi

PROVIDER: PXD016928 | Pride | 2020-01-14

REPOSITORIES: Pride

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Lack of AKAP3 disrupts integrity of the subcellular structure and proteome of mouse sperm and causes male sterility.

Xu Kaibiao K Yang Lele L Zhang Lan L Qi Huayu H

Development (Cambridge, England) 20200122 2

The development and maintenance of the correct morphology of sperm is important for their functions. Cellular morphogenesis of sperm occurs during the post-meiotic developmental stage; however, little is known about what coordinates this process. In the present study, we investigated the role of A-kinase anchoring protein 3 (AKAP3) during mouse spermiogenesis, using both mouse genetics and proteomics. It was found that AKAP3 is essential for the formation of the specific subcellular structure of ...[more]

PMID: 31969357

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