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Agnieszka Doroszuk L. Basten Snoek Emilie Fradin Joost Riksen Jan Kammenga 《Nucleic acids research》2009,37(16):e110
Recombinant inbred lines (RILs) derived from Caenorhabditis elegans wild-type N2 and CB4856 are increasingly being used for mapping genes underlying complex traits. To speed up mapping and gene discovery, introgression lines (ILs) offer a powerful tool for more efficient QTL identification. We constructed a library of 90 ILs, each carrying a single homozygous CB4856 genomic segment introgressed into the genetic background of N2. The ILs were genotyped by 123 single-nucleotide polymorphism (SNP) markers. The proportion of the CB4856 segments in most lines does not exceed 3%, and together the introgressions cover 96% of the CB4856 genome. The value of the IL library was demonstrated by identifying novel loci underlying natural variation in two ageing-related traits, i.e. lifespan and pharyngeal pumping rate. Bin mapping of lifespan resulted in six QTLs, which all have a lifespan-shortening effect on the CB4856 allele. We found five QTLs for the decrease in pumping rate, of which four colocated with QTLs found for average lifespan. This suggests pleiotropic or closely linked QTL associated with lifespan and pumping rate. Overall, the presented IL library provides a versatile resource toward easier and efficient fine mapping and functional analyses of loci and genes underlying complex traits in C. elegans. 相似文献
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Marte Molenaars Bauke V. Schomakers Hyung L. Elfrink Arwen W. Gao Martin A. T. Vervaart Mia L. Pras-Raves Angela C. Luyf Reuben L. Smith Mark G. Sterken Jan E. Kammenga Antoine H. C. van Kampen Georges E. Janssens Frdric M. Vaz Michel van Weeghel Riekelt H. Houtkooper 《Disease models & mechanisms》2021,14(4)
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Psychrophilic microorganisms and their cold-active enzymes 总被引:2,自引:0,他引:2
JE Brenchley 《Journal of industrial microbiology & biotechnology》1996,17(5-6):432-437
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Cyclins are indispensable elements of the cell cycle and derangement of their function can lead to cancer formation. Recent studies have also revealed more mechanisms through which cyclins can express their oncogenic potential. This review focuses on the aberrant expression of G1/S cyclins and especially cyclin D and cyclin E; the pathways through which they lead to tumour formation and their involvement in different types of cancer. These elements indicate the mechanisms that could act as targets for cancer therapy. 相似文献