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Meretrix meretrix

ABSTRACT: Meretrix meretrix Transcriptome or Gene expression

PROVIDER: PRJNA257120 | ENA |

REPOSITORIES: ENA

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Dataset's files

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			Action	DRS
	SRR1533133.fastq.gz	Fastqsanger.gz
	SRR1533145.fastq.gz	Fastqsanger.gz
	SRR1533146.fastq.gz	Fastqsanger.gz
	SRR1533147.fastq.gz	Fastqsanger.gz
	SRR1533149_1.fastq.gz	Fastqsanger.gz

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The potential roles of a laminin receptor in adhesion and apoptosis of cells of the marine bivalve Meretrix meretrix.

Project description:BackgroundThe laminin receptors (LRs) play important roles in cell adhesion to the extracellular matrix, certain cell-cell adhesions, and the activation of many intracellular signaling pathways. Studies of LRs have primarily focused on mammals, while few studies of LRs in marine invertebrates have been reported. The functions of LRs in marine bivalve species are still unclear.Methodology/principal findingsIn this study, we cloned and sequenced an LR gene, MmeLR, from the clam Meretrix meretrix. The MmeLR mRNA and protein detected by realtime PCR and western blots were primarily distributed in muscle tissues. Far-western analysis showed a specific interaction between recombinant MmeLR and the LR ligand laminin. The results of the binding assay suggested a role of LR in cell adhesion and apoptosis in cultured primary cells of mantle tissues from M. meretrix. The Bcl-2 mRNA expression level in primary cells cultured in matrigel (mainly laminin) coated plates was significantly higher than in cells cultured in non-coated plates at 48 h of culture, while the p53 mRNA expression pattern was inversely related to that of bcl-2, suggesting that MmeLR is involved in p53-dependent apoptosis, and the binding between MmeLR and laminin inhibits apoptosis during primary cell culture.ConclusionsOur results suggest that MmeLR may be involved in cell adhesion and apoptosis. This study may increase the understanding of the role of laminin receptor in cell adhesion and apoptosis and help to improve the culture of primary cells of marine invertebrates.

| S-EPMC3467220 | biostudies-literature

Biomarks of Resistance to Cetuximab in Colorectal Cancer

Project description:Interventions: A group:Before using cetuximab;B group:After progression of disease:no Primary outcome(s): KRAS gene sequence;NRAS gene sequence;BRAF gene sequence;PIK3CA gene sequence;EGFR gene sequence;EGFR gene copy numbers;EGFR expression;Her2 expression;c-Met expression;PTEN expression Study Design: historical control

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Integrated RNA-seq and RNAi Analysis of the Roles of the Hsp70 and SP Genes in Red-Shell Meretrix meretrix Tolerance to the Pathogen Vibrio parahaemolyticus.

Project description:The "Wanlihong" Meretrix meretrix (WLH-M) clam is a new variety of this species that has a red shell and stronger Vibrio tolerance than ordinary M. meretrix (ORI-M). To investigate the molecular mechanisms responsible for the WLH-M strain's tolerance to Vibrio, we challenged clams with Vibrio parahaemolyticus and then assessed physiological indexes and conducted transcriptome analysis and RNA interference experiments. The mortality, tissue bacterial load, and hemocyte reactive oxygen species level of ORI-M were significantly higher than those of WLH-M, whereas the content and activity of lysozyme were significantly lower. Gene Ontology functional annotation analysis and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis revealed that immune and metabolic pathways were enriched in Vibrio-challenged clams. The expressions of the heat shock protein 70 (Hsp70) and serine protease (SP) genes, which are involved in antibacterial immunity, were significantly upregulated in WLH-M but not in ORI-M, while the expression of the kynurenine 3-monooxygenase gene, a proinflammatory factor, was significantly downregulated in WLH-M. RNA interference experiments confirmed that Hsp70 and SP downregulation could result in increased mortality of WLH-M. Therefore, we speculate that Hsp70 and SP may be involved in the antibacterial immunity of WLH-M in vivo. Our data provided a valuable resource for further studies of the antibacterial mechanism of WLH-M and provided a foundation for the breeding of pathogen-resistant strains.

| S-EPMC9420185 | biostudies-literature

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