Project description:The gene mucAB has an error-prone activity in bacteria. We introduced mucAB into mouse 3T3 cells with an expression vector and found drastic increase of spontaneous transformation, accompanied by increase of expression of eight oncogenes, i. e., Gpnmb, Foxml, Maff, Myc, Aurka, Aukb, Fosl1, and Anxa8 and decrease of expression in two oncogenes, i. e., Lrig1 and RhoX in order of the magnitude of change, as compared with those in non-treated 3T3 cells. Transformation of cultured mouse BALB 3T3 cells was used as an indicator of cellular oncogenesis. We examined effects of introduction of foreign bacterial plasmid gene into mouse cells on spontaneous transformation frequency, accompanied by change of expression of known oncogenes. To do this, 3T3 cells with or without mucAB were compared for expression of known genes, using the microarray method.
Project description:PURPOSE: To provide a detailed gene expression profile of the normal postnatal mouse cornea. METHODS: Serial analysis of gene expression (SAGE) was performed on postnatal day (PN)9 and adult mouse (6 week) total corneas. The expression of selected genes was analyzed by in situ hybridization. RESULTS: A total of 64,272 PN9 and 62,206 adult tags were sequenced. Mouse corneal transcriptomes are composed of at least 19,544 and 18,509 unique mRNAs, respectively. One third of the unique tags were expressed at both stages, whereas a third was identified exclusively in PN9 or adult corneas. Three hundred thirty-four PN9 and 339 adult tags were enriched more than fivefold over other published nonocular libraries. Abundant transcripts were associated with metabolic functions, redox activities, and barrier integrity. Three members of the Ly-6/uPAR family whose functions are unknown in the cornea constitute more than 1% of the total mRNA. Aquaporin 5, epithelial membrane protein and glutathione-S-transferase (GST) omega-1, and GST alpha-4 mRNAs were preferentially expressed in distinct corneal epithelial layers, providing new markers for stratification. More than 200 tags were differentially expressed, of which 25 mediate transcription. CONCLUSIONS: In addition to providing a detailed profile of expressed genes in the PN9 and mature mouse cornea, the present SAGE data demonstrate dynamic changes in gene expression after eye opening and provide new probes for exploring corneal epithelial cell stratification, development, and function and for exploring the intricate relationship between programmed and environmentally induced gene expression in the cornea. Keywords: other
Project description:We collected whole genome testis expression data from hybrid zone mice. We integrated GWAS mapping of testis expression traits and low testis weight to gain insight into the genetic basis of hybrid male sterility.
Project description:Small molecule metabolites were extracted from plasma from Peromyscus leucopus and Mus musculus BALB/c and analyzed by liquid chromatography couple with mass spectrometry (LC-MS). XCMS software was used for peak picking, grouping and retention time correction from LC-MS data and generated a molecular feature spreadsheet. Pathway way enrichment analysis was carried out using Mummichog pathway analysis software using data from feature table.
