Carbohydrate-mediated sperm-egg interaction and species specificity: A clue from the Unio elongatulus model

R. Focarelli, G. B. La Sala, M. Balasini, F. Rosati

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

As a first step fertilization requires that sperm bind to the extracellular coat of the egg. It is generally accepted that binding is mediated by complex carbohydrates on the egg coat, recognized by carbohydrate-binding proteins on the sperm surface. In the mollusc bivalve Unio elongatulus, the main functional epitope of the carbohydrate ligand has been determined, and it shares several characteristics with other sugar structures involved in the fertilization process in different animal models. A polyclonal antibody against the Unio epitope reacts with the human ZP3 glycoprotein and the Unio ligand binds human spermatozoa in an in vitro assay. These findings are discussed in the light of the species specificity of sperm-egg binding at fertilization. Copyright (C) 2001 S. Karger AG, Basel.

Original languageEnglish
Pages (from-to)76-81
Number of pages6
JournalCells Tissues Organs
Volume168
Issue number1-2
Publication statusPublished - 2001

Fingerprint

Unio
Sperm-Ovum Interactions
Species Specificity
Spermatozoa
Carbohydrates
Fertilization
Ovum
Epitopes
Ligands
Mollusca
Bivalvia
Glycoproteins
Animal Models
Antibodies

Keywords

  • Carbohydrates
  • Egg
  • Ligand
  • Molluscs
  • Species specificity
  • Sperm

ASJC Scopus subject areas

  • Anatomy

Cite this

Carbohydrate-mediated sperm-egg interaction and species specificity : A clue from the Unio elongatulus model. / Focarelli, R.; La Sala, G. B.; Balasini, M.; Rosati, F.

In: Cells Tissues Organs, Vol. 168, No. 1-2, 2001, p. 76-81.

Research output: Contribution to journalArticle

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