To enrich the genomic information of the commercially important fish species, we obtained 5,063 high-quality expressed sequence tags （ESTs） from the muscle cDNA database of the mandarin fish （Siniperca chuatsi）. C...To enrich the genomic information of the commercially important fish species, we obtained 5,063 high-quality expressed sequence tags （ESTs） from the muscle cDNA database of the mandarin fish （Siniperca chuatsi）. Clustering analysis yielded 1,625 unique sequences including 443 contigs （from 3,881 EST sequences） and 1,182 sin- gletons. BLASTX searches showed that 959 unique sequences shared homology to proteins in the NCBI non-redundant database. A total of 740 unique sequences were functionally annotated using Gene Ontology. The 1,625 unique sequences were assigned to Kyoto Encyclopedia of Genes and Genomes reference pathways, and the results indicated that transcripts participating in nucleotide metabolism and amino acid metabolism are relatively abundant in S. chuatsi. Meanwhile, we identified 15 genes to be abundantly expressed in muscle of the mandarin fish. These genes are involved in muscle structural formation and regulation of muscle differentiation and development. The most remarkable gene in S. chuatsi is nuclease diphosphate kinase B, which is represented by 449 EST sequences accounting for 8.86% of the total EST sequences. Our work provides a transcript profile expressed in the white muscle of the mandarin fish, laying down a foundation in better understanding of fish genomics.展开更多
To successfully infect host cells and evade the host immune response, a type III secretion system （T3SS） is commonly used by enteric bacterial pathogens such as enteropathogenic Escherichia coil （EPEC）. Recent fin...To successfully infect host cells and evade the host immune response, a type III secretion system （T3SS） is commonly used by enteric bacterial pathogens such as enteropathogenic Escherichia coil （EPEC）. Recent findings have revealed that various effectors are injected into host cells through the T3SS and exert an inhibitory effect on inflammatory signaling pathways, subverting the immune responses to these pathogens. Here we review recent studies aimed at addressing the modulation of several important inflammatory signaling pathways modulated by EPEC effector proteins, such as the nuclear factor-KB （NF-KB） and mitogen-activated protein kinase （MAPK） pathways, which provides insight into the unfinished work in this unexplored field and helps to identify novel positions in inflammatory signaling networks for EPEC effectors.展开更多
基金supported by the National Natural Science Foundation of China (Grant No. 30972263 and 30771644)the Natural Science Foundation of Hunan Province, China (Grant No. 09JJ6037 and 08jj3064)
文摘To enrich the genomic information of the commercially important fish species, we obtained 5,063 high-quality expressed sequence tags （ESTs） from the muscle cDNA database of the mandarin fish （Siniperca chuatsi）. Clustering analysis yielded 1,625 unique sequences including 443 contigs （from 3,881 EST sequences） and 1,182 sin- gletons. BLASTX searches showed that 959 unique sequences shared homology to proteins in the NCBI non-redundant database. A total of 740 unique sequences were functionally annotated using Gene Ontology. The 1,625 unique sequences were assigned to Kyoto Encyclopedia of Genes and Genomes reference pathways, and the results indicated that transcripts participating in nucleotide metabolism and amino acid metabolism are relatively abundant in S. chuatsi. Meanwhile, we identified 15 genes to be abundantly expressed in muscle of the mandarin fish. These genes are involved in muscle structural formation and regulation of muscle differentiation and development. The most remarkable gene in S. chuatsi is nuclease diphosphate kinase B, which is represented by 449 EST sequences accounting for 8.86% of the total EST sequences. Our work provides a transcript profile expressed in the white muscle of the mandarin fish, laying down a foundation in better understanding of fish genomics.
文摘To successfully infect host cells and evade the host immune response, a type III secretion system （T3SS） is commonly used by enteric bacterial pathogens such as enteropathogenic Escherichia coil （EPEC）. Recent findings have revealed that various effectors are injected into host cells through the T3SS and exert an inhibitory effect on inflammatory signaling pathways, subverting the immune responses to these pathogens. Here we review recent studies aimed at addressing the modulation of several important inflammatory signaling pathways modulated by EPEC effector proteins, such as the nuclear factor-KB （NF-KB） and mitogen-activated protein kinase （MAPK） pathways, which provides insight into the unfinished work in this unexplored field and helps to identify novel positions in inflammatory signaling networks for EPEC effectors.
