http://http://dspace.unitus.it:80 The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. 2013-05-22T10:44:59Z http://hdl.handle.net/2067/1848 Title: Comparative proteomics and transcriptomics analyses of livers from two different Bos taurus breeds: “Chianina and Holstein Friesian” Authors: Timperio, Anna Maria; D'Alessandro, Angelo; Pariset, Lorraine; D'Amici, Gian Maria; Valentini, Alessio; Zolla, Lello Abstract: The Holstein Friesian and Chianina cattle breeds are representative of extreme selection for milk and meat traits, respectively, with significant changes in metabolism resulting from human selection over the past centuries. In the present study, we wanted to assess whether selection for different purposes has had a measurable effect on liver metabolism through a comparison of the protein and gene expression profiles of the two breeds. We applied 2-DE in order to identify proteins which were differentially expressed in the livers of the two breeds and relate them to different liver functions. We expected to find that only a small number of proteins would be differentially expressed, due to the relatively short phylogenetic distance between these cattle breeds. Nonetheless, thirty nine differentially-expressed proteins were characterized between Chianina and Holstein Friesian, out of a total of 560 ± 57 spots that matched. Microarray analyses evidenced the differential expression of 167 genes (148 for the Holstein Friesian and 19 for the Chianina). Despite being closely related at the genetic level, the disparity of the proteomic and transcriptomic profiles of these two breeds allows us to perform pathway analysis thus to pinpoint proteins whose expression might render the latter capable of greater milk production, or proteins involved in altered thermoregulatory ability or hormone production. On the other hand, we found proteins and gene transcripts in Chianina, not expressed in Holstein, which, upon interaction pathway analysis, were mainly involved in anabolic pathways. In brief, our integrated study provides molecular evidences to support the physiological differences between Holstein and Chianina cattle breeds. Description: L'articolo è disponibile sul sito dell'editore http://www.sciencedirect.com/ 2008-12-31T23:00:00Z http://hdl.handle.net/2067/1887 Title: Comparative proteomics and transcriptomics analyses of livers from two different Bos taurus breeds: “Chianina and Holstein Friesian” Authors: Timperio, Anna Maria; D'Alessandro, Angelo; Pariset, Lorraine; D'Amici, Gian Maria; Valentini, Alessio; Zolla, Lello Abstract: The Holstein Friesian and Chianina cattle breeds are representative of extreme selection for milk and meat traits, respectively, with significant changes in metabolism resulting from human selection over the past centuries. In the present study, we wanted to assess whethe selection for different purposes has had a measurable effect on liver metabolism through a comparison of the protein and gene expression profiles of the two breeds. We applied 2-DE in order to identify proteins which were differentially expressed in the livers of the two breeds and relate them to different liver functions. We expected to find that only a small number of proteins would be differentially expressed, due to the relatively short phylogenetic distance between these cattle breeds. Nonetheless, thirty nine differentially expressed proteins were characterized between Chianina and Holstein Friesian, out of a total of 560 ± 57 spots that matched. Microarray analyses evidenced the differential expression of 167 genes (148 for the Holstein Friesian and 19 for the Chianina). Despite being closely related at the genetic level, the disparity of the proteomic and transcriptomic profiles of these two breeds allows us to perform pathway analysis thus to pinpoint proteins whose expression might render the latter capable of greater milk production, or proteins involved in altered thermoregulatory ability or hormone production. On the other hand, we found proteins and gene transcripts in Chianina, not expressed in Holstein, which, upon interaction pathway analysis, were mainly involved in anabolic pathways. In brief, our integrated study provides molecular evidences to support the physiological differences between Holstein and Chianina cattle breeds. 2011-04-05T22:00:00Z http://hdl.handle.net/2067/1842 Title: Proteomics and Transcriptomics Investigation on longissimus Muscles in Large White and Casertana Pig Breeds Authors: Murgiano, Leonardo; D'Alessandro, Angelo; Egidi, Maria Giulia; Crisa, Alessandra; Prosperini, Gianluca; Timperio, Anna Maria; Zolla, Lello Abstract: Consumer complaints against the blandness of modern lean meat and the frequent reference to the more strongly flavored meat that was available years ago have prompted reconsideration of high fatdepositing typical pig breeds. Casertana and Large White pig breeds are characterized by a different tendency toward fat accumulation as they exhibit opposite genetic and physiological traits with respect to the energy metabolism. These physiological differences were investigated in longissimus lumborum muscles through proteomics (2-DE, MS/MS) and microarray approaches. Data were analyzed for pathway and network analyses, as well as GO term enrichment of biological functions. As a result, Casertana showed a greater amount of proteins involved in glycolitic metabolism and mainly rely on fast-mobilizable energy sources. Large White overexpressed cell cycle and skeletal muscle growth related genes. Metabolic behavior and other implications are discussed. Description: L'articolo è disponibile sul sito dell'editore http://pubs.acs.org/ 2009-12-31T23:00:00Z