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Litopenaeus vannamei (L. vannamei) is one of the most important aquaculture shrimps in the world and its survival, growth, and distribution was seriously challenged by cold stress. To investigate the response of L. vannamei under acute cold stress, mRNA and microRNA (miRNA) profiles of the hepatopancreas which was collected from the control group (28 °C) and the treatment group (13 °C) were analyzed. The results showed that 1266 differentially expressed genes (DEGs) (502 up- and 764 down-regulated) and 60 differentially expressed miRNAs (34 up- and 26 down-regulated) were identified under acute cold stress respectively. According to the functional annotation, catalytic activity was the most significant term in the GO category of molecular function, and protein processing in endoplasmic reticulum (ER) was the most enriched KEGG pathway for mRNAs profile. For miRNAs profile, functional annotation of the target genes of the differentially expressed miRNAs indicated that oxidoreductase activity was the most significant term in the GO category of molecular function, and glucagon signaling pathway was the most enriched KEGG pathway. The results revealed that ER involved in the acute cold stress response and acute cold stress may induce the unfolded protein response of L. vannamei.
This article was published in the following journal.
Name: Comparative biochemistry and physiology. Part D, Genomics & proteomics
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A heterogeneous-nuclear ribonucleoprotein found in the CELL NUCLEUS and the CYTOPLASM. Heterogeneous-nuclear ribonucleoprotein K has been implicated in the regulation of gene expression at nearly all levels: GENETIC TRANSCRIPTION; mRNA processing (RNA PROCESSING, POST-TRANSCRIPTIONAL), mRNA transport, mRNA stability, and translation (TRANSLATION, GENETIC). The hnRNP protein has a strong affinity for polypyrimidine-rich RNA and for single-stranded polypyrimidine-rich DNA. Multiple hnRNP K protein isoforms exist due to alternative splicing and display different nucleic-acid-binding properties.
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A technique for analysis of the chemical composition of molecules. A substance is bombarded with monochromatic ELECTRONS. Some of the electrons passing through the specimen will lose energy when they ionize inner shell electrons of the atoms in the specimen. The energy loss is element dependent. Analysis of the energy loss spectrum reveals the elemental composition of a specimen. ENERGY-FILTERED TRANSMISSION ELECTRON MICROSCOPY is a type of electron energy loss spectroscopy carried out in electron microscopes specially outfitted to analyze the spectrum of electron energy loss.
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