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Song HM, Mu XD, Gu DE, Luo D, Yang YX, Xu M, Luo JR, Zhang JE, Hu YC. Molecular characteristics of the HSP70 gene and its differential expression in female and male golden apple snails (Pomacea canaliculata) under temperature stimulation. Cell Stress Chaperones 2014; 19:579-89. [PMID: 24368711 PMCID: PMC4041941 DOI: 10.1007/s12192-013-0485-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 12/05/2013] [Accepted: 12/06/2013] [Indexed: 01/09/2023] Open
Abstract
Heat-shock protein 70 (HSP70) is one of the most important heat-shock proteins that helps organisms to modulate stress response via over-expression. The HSP70 gene from Pomacea canaliculata was cloned using the RACE approach; the gene is 2,767 bp in length and contains an open reading frame of 1,932 bp, which is encoded by a polypeptide of 643 amino acids. BLAST analysis showed that the predicted amino acid sequence of the P. canaliculata HSP70 gene shared a relatively high similarity with that of other known eukaryotic species that display conserved HSP characteristics. The phylogeny demonstrated a separate clustering of the apple snail HSP70 with other constitutive members from other mollusk species. Quantitative real-time RT-PCR was used to detect the differential expression of HSP70 in both sexes of P. canaliculata at different temperature conditions. These results showed that HSP70 transcript levels decreased slightly under cold shock and increased significantly under heat-shock conditions in both sexes compared to normal temperatures (26 °C). Under cold-shock treatment, the sex effect was not significant. With heat treatment, HSP70 expression could be induced at 36 °C in both females and males, and it peaked at 42 and 39 °C in females and males, respectively. In addition, a clear time-dependent HSP70 expression pattern of the apple snail exposed to the same high temperature (36 °C) was observed at different time points. The maximal induction of HSP70 expression appeared at 12 and 48 h in males and females after heat shock, respectively. The maximal induction in females was significantly higher compared to males under heat stimulus. Taken together, these results strongly suggested that males were more susceptible to heat than females and provided useful molecular information for the ecological adaptability of P. canaliculata against extreme environmental stress.
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Affiliation(s)
- Hong-Mei Song
- />Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Guangzhou, Guangdong 510380 China
| | - Xi-Dong Mu
- />Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Guangzhou, Guangdong 510380 China
| | - Dang-En Gu
- />Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Guangzhou, Guangdong 510380 China
| | - Du Luo
- />Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Guangzhou, Guangdong 510380 China
| | - Ye-Xin Yang
- />Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Guangzhou, Guangdong 510380 China
| | - Meng Xu
- />Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Guangzhou, Guangdong 510380 China
| | - Jian-Ren Luo
- />Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Guangzhou, Guangdong 510380 China
| | - Jia-En Zhang
- />Department of Ecology, College of Agriculture, South China Agricultural University, Key Laboratory of Ecological Agriculture, Guangzhou, 510642 China
| | - Yin-Chang Hu
- />Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Tropical and Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, Guangzhou, Guangdong 510380 China
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Isolation and characterization of two cytoplasmic hsp90s from Mytilus galloprovincialis (Mollusca: Bivalvia) that contain a complex promoter with a p53 binding site. Gene 2008; 431:47-54. [PMID: 19061940 DOI: 10.1016/j.gene.2008.10.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2008] [Revised: 10/29/2008] [Accepted: 10/31/2008] [Indexed: 11/21/2022]
Abstract
The commercially important marine bivalve Mytilus galloprovincialis (Mediterranean mussel) is considered a valuable bioindicator, due to its exposure to various pollutants and extreme environmental conditions. Environmental responsive genes, such as the hsp90s, protect the structure and function of cells and accomplish a significant task in cellular homeostasis. To study the hsp90s in M. galloprovincialis a genomic library was screened and two hsp90s were isolated. Sequence analysis revealed that the two genes exhibit great similarities in both the 5' non-coding and the coding region but differ in the 3' non-coding region, as well as in three introns, due to the presence of repeated sequences. Few synonymous substitutions in the coding region of the genes result to an identical predicted polypeptide, which belongs to the cytoplasmic HSP90 subfamily. The 5' non-coding region contains a non-translated exon and multiple binding sites for various transcription factors. The presence of a p53 binding site in the promoter of the isolated genes raises questions about the possible implication of hsp90s in the molluscan leukemia.
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Gestal C, Roch P, Renault T, Pallavicini A, Paillard C, Novoa B, Oubella R, Venier P, Figueras A. Study of Diseases and the Immune System of Bivalves Using Molecular Biology and Genomics. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/10641260802325518] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Cellura C, Toubiana M, Parrinello N, Roch P. Specific expression of antimicrobial peptide and HSP70 genes in response to heat-shock and several bacterial challenges in mussels. FISH & SHELLFISH IMMUNOLOGY 2007; 22:340-50. [PMID: 16926100 DOI: 10.1016/j.fsi.2006.06.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2006] [Revised: 06/09/2006] [Accepted: 06/13/2006] [Indexed: 05/11/2023]
Abstract
Defensin, mytilin and myticin are antimicrobial peptides (AMP) involved in mussel innate immunity. Their in vitro antibacterial activity is different according to the targeted bacterial species. To determine if this specificity is correlated to different regulations of gene expressions, adult mussels were challenged in vivo with either Vibrio splendidus LGP32, Vibrio anguillarum, Micrococcus lysodeikticus or by heat shock. RNAs were isolated from circulating hemocytes and AMP mRNAs were quantified by Q-PCR using 28S rRNA as housekeeping gene. In addition, HSP70 gene expression was also quantified as representing non-specific response to stress. In naïve mussels, the three AMP mRNAs were present in dramatically different quantities. Compared to defensin, myticin was expressed 300-fold more and mytilin 30-fold more. HSP70 was found expressed 80-fold more than defensin. AMP genes were differentially regulated according to the challenging bacteria, M. lysodeikticus being the only one inducing down-regulation. Such variations in mRNA quantities were observed immediately after challenging, lasting less than 24h. Only V. anguillarum effect was observed later, between 12h and 3 days post-challenge. Compared to their background expression in naïve mussels, the major effect of V. splendidus was the decrease of mytilin and myticin mRNAs, V. anguillarum mainly increased both mytilin and HSP70 mRNAs, whereas M. lysodeikticus almost suppressed defensin mRNA. As expected, heat shock increased HSP70 mRNA, but also myticin mRNA. Consequently, AMP genes responded specifically to the challenges, confirming that at least some of the innate immune mechanisms are specifically orientated.
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Affiliation(s)
- Cinzia Cellura
- Pathogens and Immunity, UMR CNRS EcoLag, University of Montpellier 2, cc 093, Place E. Bataillon, 34095 Montpellier cedex 05, France
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Leignel V, Cibois M, Moreau B, Chénais B. Identification of new subgroup of HSP70 in Bythograeidae (hydrothermal crabs) and Xanthidae. Gene 2007; 396:84-92. [PMID: 17433575 DOI: 10.1016/j.gene.2007.02.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2006] [Revised: 02/09/2007] [Accepted: 02/21/2007] [Indexed: 10/23/2022]
Abstract
Crabs of the Bythograeidae family (Crustacea: Brachyura: Bythogreoidea) are the only endemic crab family living in hydrothermal fields. The hydrothermal environment is characterized by unique ecological parameters, such as the high temperature gradient around the hydrothermal chimney (2-350 degrees C), a fluid environment containing high levels of metals and numerous gases. The 70-kDa Heat Shock Protein (HSP70) group is the most-studied HSP, because it is ubiquitous, and a strong positive correlation has been found between the amounts of HSP70 produced in response to stress, and the ability of the organism to withstand stressful conditions. The 70-kDa heat shock protein genes from Bythograeids (species analyzed: Bythograea thermydron, Cyanagraea praedator and Segonzacia mesatlantica) were characterized. Our results revealed that Bythograeidae possess genes which are similar with those present in Xanthids (coastal crabs). The deduced protein sequences displayed motifs distinct from those in the other crustacean HSC70/HSP70s available in the databases. Phylogenetic analysis showed that these members of HSP70 family identified in Bythograeidae and Xanthidae constitute a new subgroup within this family.
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Affiliation(s)
- Vincent Leignel
- Laboratoire de Biologie et Génétique Evolutive (EA3265), Université du Maine, Avenue Olivier Messiaen, F-72085 Le Mans cedex 9, France.
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Shim JK, Jung DO, Park JW, Kim DW, Ha DM, Lee KY. Molecular cloning of the heat-shock cognate 70 (Hsc70) gene from the two-spotted spider mite, Tetranychus urticae, and its expression in response to heat shock and starvation. Comp Biochem Physiol B Biochem Mol Biol 2006; 145:288-95. [PMID: 16996286 DOI: 10.1016/j.cbpb.2006.07.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2005] [Revised: 04/30/2006] [Accepted: 07/05/2006] [Indexed: 11/28/2022]
Abstract
We isolated a heat shock cognate 70 (hsc70) gene from the two-spotted spider mite, Tetranychus urticae, a serious agricultural pest. The hsc70 cDNA is 2275 bp and contains a 1962 bp open reading frame. The translated amino acid sequence consists of 654 residues with a calculated molecular mass of 71,275 Da and an isoelectronic point (pI) of 5.52. It also contains the highly conserved functional motifs of the Hsp70 family. A comparison of the deduced amino acid sequence shows a high identity (81-84%) with Hsp70s/Hsc70s of insects but the highest identity is with mussel Hsc71 (86%). Northern blot hybridization indicates that the hsc70 transcript level of female adults is higher than that of male adults. We evaluated the response of hsc70 gene to stresses from temperature and starvation. The level of hsc70 mRNA was not significantly changed by heat and cold shocks nor by recovery after the shocks. However, the hsc70 mRNA level was decreased by food restriction of female mites. Analysis of nucleotide and deduced amino acid sequences of hsc70 gene from T. urticae suggests that it is a member of heat shock cognate 70 gene in the highly conserved Hsp70 family but that its expression is influenced by food restriction rather than thermal stress. This is the first molecular analysis of a heat shock protein gene in an acarid.
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Affiliation(s)
- Jae-Kyoung Shim
- Department of Agricultural Biology, College of Agriculture and Life Sciences, Kyungpook National University, Daegu 702-701, Korea
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Cellura C, Toubiana M, Parrinello N, Roch P. HSP70 gene expression in Mytilus galloprovincialis hemocytes is triggered by moderate heat shock and Vibrio anguillarum, but not by V. splendidus or Micrococcus lysodeikticus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2006; 30:984-97. [PMID: 16476480 DOI: 10.1016/j.dci.2005.12.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2005] [Revised: 12/19/2005] [Accepted: 12/21/2005] [Indexed: 05/06/2023]
Abstract
Complete sequence of HSP70 cDNA from the mussel, Mytilus galloprovincialis was established before quantifying its expression following moderate heat shock or injection of heat-killed bacteria. HSP70 cDNA is comprised of 2378 bp including one ORF of 654 aa, with a predicted 70 bp 5'-UTR and a 343 bp 3'-UTR (GenBank, 18 Jan 05, AY861684). Alignment identity ranged from 89% for Crassostrea ariakensis to 72% for C. virginica. Curiously, HSP70 gene and cDNA sequences from M. galloprovincialis, deposited later (03 and 27 May), show only 73% identity with the present sequence. Meanwhile, characteristic motifs of the HSP70 family were located in conserved positions. Expression of HSP70 gene was quantified on circulating hemocyte mRNA using Q-PCR after RT using random hexaprimers. Housekeeping gene was 28S rRNA. Four stresses were applied: heat shock that consisted of immersing mussels for 90 min at 30 degrees C and returning them to 20 degrees C sea water, one injection of heat-killed Gram-negative bacteria, Vibrio splendidus LGP32, one injection of heat-killed Gram-negative bacteria Vibrio anguillarum, one injection of heat-killed Gram-positive bacteria Micrococcus lysodeikticus. We found no significant modification of 28S rRNA gene expression. Significant increase of 5.2 +/- 0.4 fold the ratio HSP70/28S rRNA was observed 6 h after heat shock and was maximum at 15 h (6.1 +/- 1.1), and still significant after 24 h (1.7 +/- 0.03). Similarly, injecting V. anguillarum resulted in a significant increase of 2.7 +/- 0.1 after 12 h. Expression was maximum after 48 h (5.2 +/- 0.05) and returned to baseline after 72 h. In contrast, injecting V. splendidus or M. lysodeikticus failed to significantly modulate HSP70 gene expression at least during the first 3 days post-injection. Consequently, mussel hemocytes appeared to discriminate between pathogenic and non-pathogenic Vibrios, as well as between Gram-negative and Gram-positive bacteria.
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Affiliation(s)
- Cinzia Cellura
- Pathogens and Immunity, UMR CNRS EcoLag, University of Montpellier 2, cc 093, Place E. Bataillon, 34095 Montpellier Cedex 05, France
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