es-Arp3 and es-Eps8 regulate spermatogenesis via microfilaments in the seminiferous tubule of Eriocheir sinensis

Spermatogenesis is a complicated process that includes spermatogonia differentiation, spermatocytes meiosis, spermatids spermiogenesis and final release of spermatozoa. Actin-related protein 3 (Arp3) and epidermal growth factor receptor pathway substrate 8 (Eps8) are two actin binding proteins that...

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Bibliographic Details
Published in:Tissue & cell 2023-04, Vol.81, p.102028-102028, Article 102028
Main Authors: Wang, Jia-Ming, Li, Zhen-Fang, Qi, Hong-Yu, Zhao, Zhan, Yang, Wan-Xi
Format: Article
Language:English
Subjects:
Actin Cytoskeleton - metabolism
Actin-Related Protein 3 - metabolism
Animals
Blood-Testis Barrier - metabolism
Cell adhesion
Eriocheir sinensis
es-Arp3
es-Eps8
Male
Mammals - metabolism
Microfilament Proteins - metabolism
Microfilaments
Seminiferous Tubules - metabolism
Spermatids
Spermatogenesis
Spermatogenesis - physiology
Testis
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Summary:Spermatogenesis is a complicated process that includes spermatogonia differentiation, spermatocytes meiosis, spermatids spermiogenesis and final release of spermatozoa. Actin-related protein 3 (Arp3) and epidermal growth factor receptor pathway substrate 8 (Eps8) are two actin binding proteins that regulate cell adhesion in seminiferous tubules during mammalian spermatogenesis. However, the functions of these two proteins during spermatogenesis in nonmammalian species, especially Crustacea, are still unknown. Here, we cloned es-Arp3 and es-Eps8 from the testis of Chinese mitten crab Eriocheir sinensis. es-Arp3 and es-Eps8 were located in spermatocytes, spermatids and spermatozoa. Knockdown of es-Arp3 and es-Eps8 in vivo caused morphological changes to seminiferous tubules including delayed spermatozoa release, shedding of germ cells and vacuoles. Filamentous-actin (F-actin) filaments network was disorganized due to deficiency of es-Arp3 and es-Eps8. Accompanying this, four junctional proteins (α-catenin, β-catenin, pinin and ZO1) displayed abnormal expression levels as well as penetrating biotin signals in seminiferous tubules. We also used the Arp2/3 complex inhibitor CK666 to block es-Arp3 activity and supported es-Arp3 knockdown results. In summary, our study demonstrated for the first time that es-Arp3 and es-Eps8 are important for spermatogenesis via regulating microfilament-mediated cell adhesion in Eriocheir sinensis. •es-Arp3 and es-Eps8 were expressed in testis of Eriocheir sinensis.•es-Arp3 and es-Eps8 maintained appropriate microfilament organization in testis.•es-Arp3 and es-Eps8 regulated cell adhesion protein homeostasis.
ISSN:0040-8166
1532-3072
DOI:10.1016/j.tice.2023.102028