Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of rat severed medial collateral ligament following injury

ABSTRACT: Gene Expression Profiling of Severed Rat Medial Collateral Ligament at 1, 2, 4, 7,1 0, and 14 days Following Injury with Control and Cultured Ligament Fibroblasts and Rat Universal Reference RNA; The aim of this study was to assess the genes involved in the repair of the the dense connective tissue of the a rat ligament in order to provide targets for improvement in healing. Rat whole genome microarrays (Agilent) were used in this study and Cy3 and Cy5 labeled total RNA was extracted and labeled with Cy3 or Cy5 prior to fragmentation and hybridization. Experiment Overall Design: To conserve microarrays to allow maximum replicates, two samples either Cy3 or Cy5 labeled were hybridized to each microarry. Total RNA from each rat medial collateral ligament was labeled and hybrided to a microarray. The fluorescence intensity for each column minus the background was extracted from each microarray for submission to BRB Array tools for statistical analysis.

ORGANISM(S): Rattus norvegicus

SUBMITTER: Xinyu Wang

PROVIDER: E-GEOD-10720 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Project description:Chinese medicine is a complex system guided by traditional Chinese medicine (TCM) theories, which has proven to be especially effective in treating chronic and complex diseases. However, the underlying modes of action (MOA) are not always systematically investigated. Herein, a systematic study was designed to elucidate the multi-compound, multi-target and multi-pathway MOA of a Chinese medicine ,QSYQ, on myocardial infarction. Male Sprague Dawley rat model of myocardial infarction were administered QSYQ intragastrically for 7 days while the control group was not treated. The differentially expressed genes (DEGs) were identified from myocardial infarction rat model treated with QSYQ, followed by constructing a cardiovascular disease (CVD)-related multilevel compound-target-pathway network connecting main compounds to those DEGs supported by literature evidences and the pathways that are functionally enriched. Three conditions were compared with three replicates each: (1) sham, i.e. without left anterior descending coronary artery (LAD) ligation; (2) model, with LAD ligation; (3) QSYQ, with LAD ligation and treated with QSYQ intragastrically for 7 days, the dosage was 105.6 mg/kg once a day. Rats were sacrificed after 7 days of i.g. administration under 10% chloral hydrate anesthesia (300mg/kg). Three tissue samples on the border between infarct and non-infarct area were dissected from left ventricles of each group. The tissue samples were stored at -80M-bM-^DM-^C refrigerator. Total RNA was extracted using TRIZol Reagent (Invitrogen) and purified using RNeasy Mini kit (QIAGEN), following manufacturersM-bM-^@M-^Y protocols. RNA quality was evaluated using an Agilent 2100 Bioanalyzer and electrophoresis in 2% (w/v) agarose gels. Only RNA with RNA integrity numbers (RINs) greater than 7.0 and 28SrRNA/18S rRNA ratio greater than 0.7 was used for microarray analyses. Whole genome microarray analysis was performed using Affymetrix rat Genome 230 2.0 chips.

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Transcription profiling of rat severed medial collateral ligament following injury

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