{"doi":"10.1017/s0031182012002168","title":"Characterization of heat shock protein 70 gene from<i>Haemonchus contortus</i>and its expression and promoter analysis in<i>Caenorhabditis elegans</i>","abstract":"<jats:title>SUMMARY</jats:title><jats:p><jats:italic>Haemonchus contortus</jats:italic>infections in small ruminants are of major economic importance worldwide. Heat shock proteins (HSPs) are a family of molecular chaperones that play important roles in the process of invasion and survival of nematodes. Although HSP70 has been identified in several parasitic nematodes, little is known of its distribution and function in<jats:italic>Haemonchus contortus</jats:italic>. The aims of this study were to characterize HSP70 from<jats:italic>Haemonchus contortus</jats:italic>(designed as Hc-hsp70), express Hc-hsp70 and analyse the promoter activity in<jats:italic>Caenorhabditis elegans</jats:italic>. Bioinformatic analysis revealed that the open reading frame of the Hc-hsp70 cDNA encodes a 646-amino acid peptide, which is highly conserved in comparison to HSP70 in other nematodes. Phylogenetic analysis indicated that<jats:italic>H. contortus</jats:italic>is closely related to<jats:italic>Caenorhabditis</jats:italic>. The 5′-flanking region promoted green fluorescence protein (GFP) expression in the intestine in all larval stages and adult with 2 expression patterns in<jats:italic>C. elegans</jats:italic>. Expression of Hc-hsp70 mRNA transcripts in<jats:italic>C. elegans</jats:italic>increased following 2, 4, 6 h of heat shock and peaked at 4 h. However, its expression induced down-regulation of<jats:italic>hsp-1</jats:italic>of<jats:italic>C. elegans</jats:italic>. These results suggest that the<jats:italic>H. contortus</jats:italic>hsp70 might have a similar function to that of<jats:italic>C. elegans hsp-1</jats:italic>.</jats:p>","journal":"Parasitology","year":2013,"id":659590,"datarank":0.3596842909197557,"base_score":2.3978952727983707,"endowment":2.3978952727983707,"self_citation_contribution":0.3596842909197557,"citation_network_contribution":0.0,"self_endowment_contribution":0.3596842909197557,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":10,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1721813,"name":"QIANJIN ZHOU","orcid":null,"position":1,"is_corresponding":false},{"id":1721816,"name":"YI YANG","orcid":null,"position":2,"is_corresponding":false},{"id":1721819,"name":"XUEQIU CHEN","orcid":null,"position":3,"is_corresponding":false},{"id":1721822,"name":"BAOLONG YAN","orcid":null,"position":4,"is_corresponding":false},{"id":1721824,"name":"AIFANG DU","orcid":null,"position":5,"is_corresponding":false},{"id":1721811,"name":"HONGLI ZHANG","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Characterization of heat shock protein 70 gene from<i>Haemonchus contortus</i>and its expression and promoter analysis in<i>Caenorhabditis elegans</i>","abstract":"<jats:title>SUMMARY</jats:title><jats:p><jats:italic>Haemonchus contortus</jats:italic>infections in small ruminants are of major economic importance worldwide. Heat shock proteins (HSPs) are a family of molecular chaperones that play important roles in the process of invasion and survival of nematodes. Although HSP70 has been identified in several parasitic nematodes, little is known of its distribution and function in<jats:italic>Haemonchus contortus</jats:italic>. The aims of this study were to characterize HSP70 from<jats:italic>Haemonchus contortus</jats:italic>(designed as Hc-hsp70), express Hc-hsp70 and analyse the promoter activity in<jats:italic>Caenorhabditis elegans</jats:italic>. Bioinformatic analysis revealed that the open reading frame of the Hc-hsp70 cDNA encodes a 646-amino acid peptide, which is highly conserved in comparison to HSP70 in other nematodes. Phylogenetic analysis indicated that<jats:italic>H. contortus</jats:italic>is closely related to<jats:italic>Caenorhabditis</jats:italic>. The 5′-flanking region promoted green fluorescence protein (GFP) expression in the intestine in all larval stages and adult with 2 expression patterns in<jats:italic>C. elegans</jats:italic>. Expression of Hc-hsp70 mRNA transcripts in<jats:italic>C. elegans</jats:italic>increased following 2, 4, 6 h of heat shock and peaked at 4 h. However, its expression induced down-regulation of<jats:italic>hsp-1</jats:italic>of<jats:italic>C. elegans</jats:italic>. These results suggest that the<jats:italic>H. contortus</jats:italic>hsp70 might have a similar function to that of<jats:italic>C. elegans hsp-1</jats:italic>.</jats:p>","is_dataset_classified":null,"base_score":2.3978952727983707,"endowment":2.3978952727983707,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"23360558","pmcid":null,"openalex_id":"https://openalex.org/W2026748645","authors":[],"funders":[],"total_grants":0,"fwci":0.3065,"citation_percentile":0.54508612,"influential_citations":0,"citation_trend":[{"year":2014,"count":1},{"year":2015,"count":1},{"year":2016,"count":1},{"year":2017,"count":1},{"year":2019,"count":2},{"year":2020,"count":1},{"year":2021,"count":1},{"year":2024,"count":2}],"oa_status":"closed","license":"https://www.cambridge.org/core/terms","oa_locations":[{"url":"https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182012002168","host_type":"publisher"},{"url":"https://doi.org/10.1017/s0031182012002168","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/23360558","host_type":"repository"}],"fields_of_study":["Genetics, Aging, and Longevity in Model Organisms","thermodynamics and calorimetric analyses","Selenium in Biological Systems","Amino Acid Sequence","Animals","Base Sequence","Caenorhabditis elegans","Chromosome Mapping","Computational Biology","DNA, Helminth","Down-Regulation","Escherichia coli","Feces","Female","Gene Expression Regulation","HSP70 Heat-Shock Proteins","Haemonchus","Helminth Proteins","Hot Temperature","Larva","Male","Molecular Sequence Data","Phylogeny","Promoter Regions, Genetic","Sequence Alignment","Sequence Analysis, DNA","Sequence Homology, Amino Acid","Sheep"],"mesh_terms":["Amino Acid Sequence","Animals","Base Sequence","Chromosome Mapping","Escherichia coli","Feces","Female","Gene Expression Regulation","Haemonchus","Hot Temperature","Larva","Male","Molecular Sequence Data","Phylogeny","Promoter Regions, Genetic","Sheep","Down-Regulation","Helminth Proteins","Sequence Alignment","Caenorhabditis elegans","Sequence Homology, Amino Acid","Sequence Analysis, DNA","DNA, Helminth","HSP70 Heat-Shock Proteins","Computational Biology"],"keywords":["Caenorhabditis elegans","Haemonchus contortus","Biology","Heat shock protein","Hsp70","Gene","Open reading frame","Complementary DNA","Heat shock","Genetics","Molecular biology","Cell biology","Peptide sequence","Nematode","Ecology"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-12T07:14:04.213736Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}