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Identification of Coding and Non-coding RNA Classes Expressed in Swine Whole Blood
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Comprehensive analysis of the whole transcriptomes from two different pig breeds using RNA-Seq method.

Katarzyna Ropka-Molik1, Kacper Zukowski, Robert Eckert

  • 1Laboratory of Genomics, National Research Institute of Animal Production, Krakowska 1, 32-083, Balice, Poland.

Animal Genetics
|June 26, 2014
PubMed
Summary
This summary is machine-generated.

This study used RNA-sequencing to compare gene expression in Pietrain and Polish Landrace pigs, identifying 35 differentially expressed genes. These genes are linked to muscle traits and reproduction, offering insights into economically important pig characteristics.

Keywords:
LandracePietraincandidate genegene expressionmuscle tissue

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Area of Science:

  • Animal Genomics
  • Molecular Biology
  • Transcriptomics

Background:

  • Pietrain and Polish Landrace (PL) pig breeds exhibit distinct muscularity, growth, and reproductive traits.
  • Understanding the genetic basis of these phenotypic differences is crucial for improving economically important livestock characteristics.

Purpose of the Study:

  • To perform a whole-transcriptome analysis of muscle tissue in Pietrain and PL pigs.
  • To identify differentially expressed genes (DEGs) between the two breeds.
  • To propose candidate genes associated with economically important pig traits.

Main Methods:

  • Next-generation sequencing (NGS) RNA-Seq technology was employed for transcriptome analysis.
  • Muscle tissue (m. semimembranosus) from Pietrain and PL pigs was analyzed.
  • Three distinct analytical approaches (DESeq, Cufflinks, and Edger) were utilized to identify DEGs under stringent criteria.

Main Results:

  • 35 differentially expressed genes were identified between Pietrain and PL pigs.
  • Abundant transcripts in both breeds encoded ribosomal and cytoskeletal proteins, as well as calcium-binding proteins involved in muscle function.
  • Polish Landrace pigs showed up-regulation of genes related to reproduction (gamete generation, fertilization, embryonic development).
  • Pietrain pigs exhibited over-expression of genes involved in apoptosis regulation, immune response, cell signaling, growth, migration, and metabolism.

Conclusions:

  • The identified gene functions align with the observed phenotypic variations between the Pietrain and PL breeds.
  • A novel panel of candidate genes associated with economically important pig traits has been proposed.
  • This research provides valuable genetic markers for pig breeding programs.