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Comparative analyses of transcriptome during skeletal muscle development between pig breeds differing in muscle growth rate by deep-sequencing

ABSTRACT: Obese and lean pig show breed-specific traits in muscle growth and meat quality. However, the mechanisms underlying remains unclear. Here, we reported the first genome-wide muscle development research from embryonic to 6 months old between Lantang (obese) and Landrace (lean) using Solexa/Illumina’s Genome Analyzer. We obtained 4.22±0.9×107 total reads per sample with approximately 5×106 distinct tags. Filtered adaptor tags, empty reads, low quality tags and tags of copy number =1, we obtained 3.84±0.9×107 clean total tags with 1.5±0.5×106 clean distinct tags.

ORGANISM(S): Sus scrofa

PROVIDER: GSE25406 | GEO | 2012/06/18

SECONDARY ACCESSION(S): PRJNA134147

REPOSITORIES: GEO

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Comparative analyses of transcriptome during skeletal muscle development between pig breeds differing in muscle growth rate by deep-sequencing

Project description:Obese and lean pig show breed-specific traits in muscle growth and meat quality. However, the mechanisms underlying remains unclear. Here, we reported the first genome-wide muscle development research from embryonic to 6 months old between Lantang (obese) and Landrace (lean) using Solexa/Illumina’s Genome Analyzer. We obtained 4.22±0.9×107 total reads per sample with approximately 5×106 distinct tags. Filtered adaptor tags, empty reads, low quality tags and tags of copy number =1, we obtained 3.84±0.9×107 clean total tags with 1.5±0.5×106 clean distinct tags. 20 libraries of longissimus muscle samples were sequenced in Lantang and Landrace at days 35, 49, 63, 77, 91 prenatal and 2, 28, 90, 120, 180 postnatal days.

2012-06-18 | E-GEOD-25406 | biostudies-arrayexpress

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Transcription profiling of human cumulus cells in vitro isolated from polycystic ovary syndrome lean and obese individuals reveals PCOS in lean and obese individuals is associated with different molecular pathways

Project description:Objective: The etiology of PCOS is mostly unknown. Existing data support both genetic and environmental factors in its pathogenesis. Design: Prospective case - control study. Setting: University Hospital. Patients: 25 patients undergoing IVF-ICSI treatment. Intervention: Genome-wide oligonucleotide microarray technology was used to study differential gene-expression patterns of cultured human cumulus cells from IVF patients divided into 4 groups according to disease state (PCOS vs. Control) and BMI (Obese vs. Lean). Results: Two differential PCOS gene expression profiles were established: Lean-Type was formed by comparing PCOS lean (PL) vs. non-PCOS lean (NL) individuals; Obese-Type was formed by comparing PCOS obese (PO) vs. non-PCOS (NO) obese patients. Conclusions: Different molecular pathways are associated with PCOS in Lean and Obese individuals, as demonstrated by gene expression profiling of cumulus cells. Our findings provide insights into the molecular pathogenesis of PCOS. We used microarrays to study the gene expression of human cultured cumulus cells. We compared the genes expression of lean PCOS, Obese PCOS, lean controls and obese controls. Different molecular pathways are associated with PCOS in Lean and Obese patients. Experiment Overall Design: Cumulus cells obtained from woman undergoing IVF/ICSI. Following oocyte retrieval, cumulus cells were stripped from the oocyte, in preparation for the ICSI process, with a micropipette. After 48h in culture the cumulus cells were collected for RNA extraction and hybridization on Affymetrix microarrays. We compered the expression profile of 4 groups - lean PCOS, obese PCOS, lean controls and obese controls.

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Gene expression microarray profiles of cumulus cells in lean and overweight-obese polycystic ovary syndrome patients

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Adipocyte-derived Exosomal miRNAs from Subcutaneous Adipose Tissue: A Novel Mechanism for Obesity-Related Disease

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LongSAGE analysis in skeletal muscle at three prenatal stages in lean and obese pig breeds

Project description:Obese and lean pig breeds showed obvious phenotypic variations and physiological differences in skeletal muscle growth. Prenatal muscle development programs postnatal performance. In this study we initially conducted full transcriptional profiling of prenatal skeletal muscle from Tongcheng pigs (obese) and Landrace pigs (lean) at 33, 65 and 90 days post coitus (dpc), using long serial analysis of gene expression (LongSAGE). We subsequently sequenced 317,115 LongSAGE tags and identified 1400 and 1201 differentially expressed transcripts that showed eight expression patterns for Tongcheng and Landrace, respectively. These two breeds had more significant differences in their gene expression profiles at 65 than that at 33 and 90 dpc. We also identified 532, 653 and 459 transcripts that were differentially expressed at 33, 65 and 90 dpc between the two breeds, respectively. The cellular function of the differentially expressed transcripts that matched annotated genes revealed that each stage had a uniquely altered profile between the two breeds in various functional categories including muscle fiber constitute and contraction, apoptosis, protein synthesis, and signalling transduction. Our results suggest that skeletal muscle development potentially has a greater lag in its growth rate at 33-65 dpc in Tongcheng pigs when compared with their Landrace counterparts. Our analyses therefore not only will provide valuable resources in the further identification of candidate genes for meat production traits, but also assist in the elucidation of the development of prenatal skeletal muscle in pigs and other vertebrates. Keywords: comparative transcriptome analysis

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