Spermiation: Insights from Studies on the Adjudin Model

Haiqi Chen, Yu Jiang, Dolores D. Mruk, C. Yan Cheng

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Scopus citations


Spermatogenesis is comprised of a series of cellular events that lead to the generation of haploid sperm. These events include self-renewal of spermatogonial stem cells (SSC), proliferation of spermatogonia by mitosis, differentiation of spermatogonia and spermatocytes, generation of haploid spermatids via meiosis I/II, and spermiogenesis. Spermiogenesis consists of a series of morphological events in which spermatids are being transported across the apical compartment of the seminiferous epithelium while maturing into spermatozoa, which include condensation of the genetic materials, biogenesis of acrosome, packaging of the mitocondria into the mid-piece, and elongation of the sperm tail. However, the biology of spermiation remains poorly understood. In this review, we provide in-depth analysis based on the use of bioinformatics tools and an animal model that mimics spermiation through treatment of adult rats with adjudin, a non-hormonal male contraceptive known to induce extensive germ cell exfoliation across the seminiferous epithelium, but nost notably elongating/elongated spermatids. These analyses have shed insightful information regaridng the biology of spermiation.

Original languageEnglish (US)
Title of host publicationAdvances in Experimental Medicine and Biology
Number of pages14
StatePublished - 2021
Externally publishedYes

Publication series

NameAdvances in Experimental Medicine and Biology
ISSN (Print)0065-2598
ISSN (Electronic)2214-8019


  • Adjudin
  • Germ cell development
  • Spermatogenesis
  • Spermiogenesis
  • Testis

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)


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