Heterologous microarray analysis of transcriptome alterations in Mus spretus mice living in an industrial settlement.
This work demonstrates the successful application of a commercial oligonucleotide microarray containing Mus musculus whole-genome probes to assess the biological effects of an industrial settlement on inhabitant Mus spretus mice. The transcriptomes of animals in the industrial settlement contrasted with those of specimens collected from a nearby protected ecosystem. Proteins encoded by the differentially expressed genes were broadly categorized into six main functional classes. Immune-associated genes were mostly induced and related to innate and acquired immunity and inflammation. Genes sorted into the stress-response category were mainly related to oxidative-stress tolerance and biotransformation. Metabolism-associated genes were mostly repressed and related to lipid metabolic pathways; these included genes that encoded 11 of the 20 cholesterol biosynthetic pathway enzymes. Crosstalk between members of different functional categories was also revealed, including the repression of serine-protease genes and the induction of protease-inhibitor genes to control the inflammatory response. Absolute quantification of selected transcripts was performed via RT-PCR to verify the microarray results and assess interindividual variability. Microarray data were further validated by immunoblotting and by cholesterol and protein-thiol oxidation level determinations. Reported data provide a broad impression of the biological consequences of residing in an industrial area.
Department of Biochemistry and Molecular Biology, Agrifood Campus of International Excellence (ceiA3), Severo Ochoa Building, University of Córdoba , Rabanales Campus, 14071 Córdoba, Spain.
Nieves
N
Abril
Julia
J
Ruiz-Laguna
Miguel Ángel
MÁ
García-Sevillano
Ana M
AM
Mata
José Luis
JL
Gómez-Ariza
Carmen
C
Pueyo
D000818:Animals; D015153:Blotting, Western; D002784:Cholesterol / Q000378:metabolism; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation; D007109:Immunity / Q000235:genetics; D007221:Industry; D051379:Mice; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D010084:Oxidation-Reduction; D011506:Proteins / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D015203:Reproducibility of Results; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013312:Stress, Physiological / Q000235:genetics; D013438:Sulfhydryl Compounds / Q000378:metabolism; D059467:Transcriptome / Q000235:genetics*
D011506:Proteins; D012333:RNA, Messenger; D013438:Sulfhydryl Compounds; D002784:Cholesterol