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Area of Science:

  • Developmental Biology
  • Epigenetics
  • Molecular Biology

Background:

  • Histone methylation is critical for cell lineage and organogenesis.
  • Enhancer of Zeste Homolog 2 (EZH2) methyltransferase activity is vital in mammalian embryonic development.
  • Pigs are increasingly important models for biomedical research, yet porcine EZH2 expression patterns remain understudied.

Purpose of the Study:

  • To identify transcript variants of the EZH2 gene in porcine fetuses.
  • To characterize the temporal expression pattern of EZH2 in middle and late-stage porcine fetal tissues.
  • To elucidate the role of EZH2 in porcine embryonic development.

Main Methods:

  • Identification of the EZH2 coding sequence in Duroc pig fetuses (65 and 90 days postcoitus).
  • Comparison of the identified EZH2 transcript with the NCBI reference sequence.
  • Analysis of EZH2 gene expression levels across various fetal tissues at different developmental stages.

Main Results:

  • A porcine EZH2 coding sequence of 2241 bp was identified, encoding 746 amino acids.
  • The identified transcript exhibited 9 amino acid insertions and 1 substitution compared to the NCBI reference.
  • EZH2 demonstrated ubiquitous expression in fetal tissues at both 65 and 90 days postcoitus, with varying levels.

Conclusions:

  • A distinct porcine EZH2 transcript variant was validated.
  • The characterized expression profile highlights EZH2's significant and widespread role in porcine embryonic development.
  • This study provides foundational data for utilizing pigs as a model for EZH2-related developmental studies.