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Updated: Sep 13, 2025

A Deep-sequencing-assisted, Spontaneous Suppressor Screen in the Fission Yeast Schizosaccharomyces pombe
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Genetic Diversity in the Suppressyn Gene Sequence: From Polymorphisms to Loss-of-Function Mutations.

Jun Sugimoto1, Danny J Schust2, Takeshi Nagamatsu3

  • 1Department of Obstetrics and Gynecology, Hiroshima University, Hiroshima 734-8551, Japan.

Biomolecules
|July 29, 2025
PubMed
Summary

Genetic variations in the suppressyn gene can disrupt its function, impairing placental cell fusion. Identifying these suppressyn mutations may reveal new causes of placental dysfunction.

Keywords:
SNPcell fusionendogenous retroviruses (ERV)loss-of-functionsuppressyn

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Area of Science:

  • Reproductive biology
  • Human genetics
  • Molecular cell biology

Background:

  • Suppressyn is a key regulator of placental cell fusion (syncytialization).
  • Altered suppressyn expression is linked to abnormal placental development and fetal growth restriction.
  • The genetic basis for suppressyn dysregulation is not well understood.

Purpose of the Study:

  • To investigate the role of genomic variations in suppressyn function.
  • To identify genetic mutations affecting suppressyn's role in cell fusion.

Main Methods:

  • Sequence analysis of the suppressyn gene.
  • Functional assessment of identified genetic variants.

Main Results:

  • Six polymorphisms were identified in the suppressyn coding region.
  • Specific deletions and amino acid substitutions lead to a complete loss of suppressyn function.
  • Identified mutations are not yet in disease-associated databases.

Conclusions:

  • Genomic variations can cause loss-of-function mutations in suppressyn.
  • Further genomic studies may uncover novel genetic contributions to placental dysfunction.
  • Findings may guide therapeutic strategies for suppressyn-related disorders.