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New Advances of the Molecular Mechanisms of Gonad Development, Gametogenesis, and Fertilization

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Biology".

Deadline for manuscript submissions: 20 March 2025 | Viewed by 1591

Special Issue Editor


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Guest Editor
Center for Heal and Environment, University of California, Davis, CA 95616, USA
Interests: sperm-egg binding (cellular recognition); sperm penetration through the egg envelope; alteration of the egg envelope by components of the egg cortical granules to effect a block to polyspermy; modification of the egg envelope to protect and regulate the environment for the developing embryo
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Special Issue Information

Dear Colleagues,

The molecular mechanisms of gonad development and fertilization have been studied for many years using different species. Since Chiquoine identified mammalian primordial germ cells (PGCs) in 1954, the molecular mechanisms of germline establishment via embryogenic gonad development have been investigated. Investigations have focused on the roles of PGCs using many different species. As a result of these efforts, knowledge of the molecular mechanisms of gonad development during embryogenesis, oogenesis and spermatogenesis in the developing ovary and testis, and fertilization has increased. However, research in these areas is still fragmented and/or limited for many animal species. To provide an integrated view of gonad development and fertilization and to further elucidate the cellular and molecular mechanisms of gonad development and sperm-egg interactions (fertilization), authors are invited to submit manuscripts that will advance knowledge in the field of reproduction. Such knowledge may be applied to human reproduction and agricultural species and used to protect endangered species worldwide. Basic research on the cellular and molecular mechanisms of gonad development, fertilization, and early development through hatching in invertebrate and vertebrate animals is applicable.

Dr. Kenji Murata
Guest Editor

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Keywords

  • primordial germ cells
  • sex differentiation
  • extensive epigenetic reprogramming
  • Fertilization
  • oogenesis
  • spermatogenesis
  • vertebrate
  • imvertebrate
  • Sperm-egg interaction
  • folliculogenesis

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Published Papers (1 paper)

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Research

16 pages, 30704 KiB  
Article
Revealing Spermatogenesis in Smooth-Hound Sharks Mustelus mustelus: Insights into the Morphological and Macromolecular Composition of Spermatogenic Cells
by Giulia Chemello, Lorenzo Jacopo De Santis, Erica Trotta, Matteo Zarantoniello, Chiara Santoni, Francesca Maradonna, Ike Olivotto, Elisabetta Giorgini and Giorgia Gioacchini
Int. J. Mol. Sci. 2024, 25(11), 6230; https://doi.org/10.3390/ijms25116230 - 5 Jun 2024
Cited by 1 | Viewed by 871
Abstract
Elasmobranchs have an ancestral reproductive system, which offers insights into vertebrate reproductive evolution. Despite their unchanged design over 400 million years, they evolved complex mechanisms ensuring reproductive success. However, human activities induced a significant decline in elasmobranch populations worldwide. In the Mediterranean basin, [...] Read more.
Elasmobranchs have an ancestral reproductive system, which offers insights into vertebrate reproductive evolution. Despite their unchanged design over 400 million years, they evolved complex mechanisms ensuring reproductive success. However, human activities induced a significant decline in elasmobranch populations worldwide. In the Mediterranean basin, the smooth-hound shark (Mustelus mustelus) is one of the species that are considered vulnerable to human activities. Conservation efforts necessitate a thorough understanding of its reproductive strategy. This study focused on mature male specimens of smooth-hound sharks that were captured in the Adriatic area and successively analyzed to provide, for the first time, a histologically detailed description of testicular development in the species. Seven phases of the spermatogenesis process were identified, along with the macromolecular characterization of cells obtained using Fourier-transform infrared imaging. Histological analysis showed structural and cellular features similar to those documented in the spermatocysts of other elasmobranchs. The examination of the evolution and migration of both germinative and Sertoli cells at each phase revealed their close connection. Furthermore, different expression levels of lipids, proteins, and phosphates (DNA) at each spermatogenesis stage were observed. This research provided new information on spermatogenesis in the common smooth-hound shark, which is crucial for conservation efforts against population decline and anthropogenic pressures. Full article
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