1
|
Chen SN, Huang L, Fu JP, Pang AN, Wang KL, Nie P. Gene synteny, evolution and antiviral activity of type I IFNs in a reptile species, the Chinese soft-shelled turtle Pelodiscus sinensis. Dev Comp Immunol 2022; 134:104461. [PMID: 35660570 DOI: 10.1016/j.dci.2022.104461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 05/21/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
Type I interferons (IFNs) are critical cytokines for the establishment of antiviral status in fish, amphibian, avian and mammal, but the knowledge on type I IFNs is rather limited in reptile. In this study, seven type I IFN genes, designed as IFN1 to IFN7, were identified from a reptile species, the Chinese soft-shelled turtle (Pelodiscus sinensis). These identified type I IFNs have relatively low protein identity, when compared with those in human and chicken; but they possess conserved cysteines, predicted multi-helix structure and N-terminal signal peptide. The Chinese soft-shelled turtle IFN1 to IFN5 have two exons and one intron, but IFN6 and IFN7 are the single-exon genes. Chinese soft-shelled turtle type I IFNs are located respectively on the two conserved reptile-bird loci, named as Locus a and Locus c, and are clustered into the four of the five reptile-bird groups (named as Groups I-V) based on phylogenetic evidence, due to the lack of IFNK in the turtle. Moreover, the Chinese soft-shelled turtle type I IFNs can be induced by soft-shelled turtle iridovirus (STIV) infection and show antiviral activity in soft-shelled turtle artery (STA) cells, except IFN6. In addition, due to the difference in genome organizations, such as the number of exons and introns of type I IFN genes from fish to mammal, the definition and evolution of 'intronless' type I IFN genes were discussed in lineages of vertebrates. Thus, the finding of type I IFNs on two different loci in P. sinensis sheds light on the evolution of type I IFN genes in vertebrates.
Collapse
Affiliation(s)
- Shan Nan Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Lin Huang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Jian Ping Fu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - An Ning Pang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Kai Lun Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, Shandong Province, 266237, China; School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China.
| |
Collapse
|
2
|
Wu JP, Zhou J, Jiao ZB, Fu JP, Xiao Y, Guo FL. Amorphophallus konjac anthracnose caused by Colletotrichum siamense in China. J Appl Microbiol 2019; 128:225-231. [PMID: 31566868 DOI: 10.1111/jam.14460] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 07/26/2019] [Accepted: 07/26/2019] [Indexed: 11/30/2022]
Abstract
AIMS Amorphophallus konjac is an important commercial crop grown in China because it is the only plant species which is rich in glucomannan concentration. Recently, an outbreak of anthracnose (incidence ranging from 10-15%) was observed in a field survey conducted from June to August 2018. This study aims to identify the causal agent of A. konjac anthracnose. METHODS AND RESULTS The pathogen was isolated on potato dextrose agar (PDA) medium. The fungal colony on PDA was greyish to dark grey. Conidia were falcate, one-celled and hyaline. Based on the micro-morphological and cultural characteristics, the pathogen was identified as Colletotrichum sp. blast search and phylogenetic analysis of the ITS, GAPDH, CHS1, ACT, CAL and TUB2 genes revealed the pathogen as Colletotrichum siamense. Koch's postulates were conducted on 2-month konjac leaves with conidial suspension. Development of typical anthracnose disease was recorded 5 days after inoculation and the pathogen's identity was confirmed by re-isolation and molecular identification. CONCLUSIONS Amorphophallus konjac anthracnose was caused by C. siamense in China. SIGNIFICANCE AND IMPACT OF THE STUDY Identification of causal agent of A. konjac anthracnose will be helpful in designing effective disease control strategies.
Collapse
Affiliation(s)
- J P Wu
- Institute of Economic Crops, Hubei Academy of Agricultural Sciences, Wuhan, China.,Hubei Key Laboratory of Vegetable Germplasm Enhancement and Genetic Improvement, Wuhan, Hubei Province, China
| | - J Zhou
- Institute of Economic Crops, Hubei Academy of Agricultural Sciences, Wuhan, China.,Hubei Key Laboratory of Vegetable Germplasm Enhancement and Genetic Improvement, Wuhan, Hubei Province, China
| | - Z B Jiao
- Institute of Economic Crops, Hubei Academy of Agricultural Sciences, Wuhan, China.,Hubei Key Laboratory of Vegetable Germplasm Enhancement and Genetic Improvement, Wuhan, Hubei Province, China
| | - J P Fu
- Institute of Economic Crops, Hubei Academy of Agricultural Sciences, Wuhan, China.,Hubei Key Laboratory of Vegetable Germplasm Enhancement and Genetic Improvement, Wuhan, Hubei Province, China
| | - Y Xiao
- Institute of Economic Crops, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - F L Guo
- Institute of Economic Crops, Hubei Academy of Agricultural Sciences, Wuhan, China.,Hubei Key Laboratory of Vegetable Germplasm Enhancement and Genetic Improvement, Wuhan, Hubei Province, China
| |
Collapse
|
3
|
Liu LJ, Chen XC, Fu JP, Qing X, Huang JQ, Han JL. Male workers' exposure characteristics of ΣPCDD/F from a municipal solid waste incinerator in south China through hair analysis. Ecotoxicol Environ Saf 2019; 178:105-112. [PMID: 30999178 DOI: 10.1016/j.ecoenv.2019.04.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 03/26/2019] [Accepted: 04/03/2019] [Indexed: 06/09/2023]
Abstract
Human hair, flue gas and fly ash from a municipal solid waste incinerator (MSWI) in south China were collected and analyzed for polychlorinated dibenzo-p-dioxin (PCDD) and polychlorinated dibenzofuran (PCDF). The ΣPCDD/F level in hair from male workers were higher than those from residents. The Principal Component Analysis (PCA) suggested that ΣPCDD/F in flue gas is an external source of male workers' hair ΣPCDD/F. Results of daily intake of ΣPCDD/F by inhaling flue gas suggested that the inhalation exposure of ΣPCDD/F was at a slight health risk. For the male workers directly exposed to the MSWI power plant, ΣPCDD/F levels in their hair were significantly higher than those who were non-directly exposed. Moreover, a significantly positive relationship was obtained between ΣPCDD/F levels in male workers' hair and the working time. The result of correlation analysis suggested that 1,2,3,4,6,7,8-HpCDD and OCDD could be level indicator congeners to estimate ΣPCDD/F levels. In addition, 2,3,7,8-TCDD could be applied as TEQ indicator congener to characterize the hair of MSWI male workers.
Collapse
Affiliation(s)
- Li Jun Liu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510000, China
| | - Xi Chao Chen
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510000, China
| | - Jian Ping Fu
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510000, China
| | - Xian Qing
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510000, China
| | - Jin Qiong Huang
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510000, China
| | - Jing Lei Han
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510000, China.
| |
Collapse
|
4
|
Chen SN, Zhang XW, Li L, Ruan BY, Huang B, Huang WS, Zou PF, Fu JP, Zhao LJ, Li N, Nie P. Evolution of IFN-λ in tetrapod vertebrates and its functional characterization in green anole lizard (Anolis carolinensis). Dev Comp Immunol 2016; 61:208-224. [PMID: 27062970 DOI: 10.1016/j.dci.2016.04.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 04/05/2016] [Accepted: 04/05/2016] [Indexed: 06/05/2023]
Abstract
IFN-λ (IFNL), i.e. type III IFN genes were found in a conserved gene locus in tetrapod vertebrates. But, a unique locus containing IFNL was found in avian. In turtle and crocodile, IFNL genes were distributed in these two separate loci. As revealed in phylogenetic trees, IFN-λs in these two different loci and other amniotes were grouped into two different clades. The conservation in gene presence and gene locus was also observed for the receptors of IFN-λ, IFN-λR1 and IL-10RB in tetrapods. It is further revealed that in North American green anole lizard Anolis carolinensis, a single IFNL gene was situated collinearly in the conserved locus as in other tetrapods, together with its receptors IFN-λR1 and IL-10RB also identified in this study. The IFN-λ and its receptors were expressed in all examined organs/tissues, and their expression was stimulated following the injection of polyI:polyC. The ISREs in promoter of IFN-λ in lizard were responsible to IRF3 as demonstrated using luciferase report system, and IFN-λ in lizard functioned through the receptors, IFN-λR1 and IL-10RB, as the up-regulation of ISGs was observed in ligand-receptor transfected, and also in recombinant IFN-λ stimulated, cell lines. Taken together, it is concluded that the mechanisms involved in type III IFN ligand-receptor system, and in its signalling pathway and its down-stream genes may be conserved in green anole lizard, and may even be so in tetrapods from xenopus to human.
Collapse
Affiliation(s)
- Shan Nan Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of the Chinese Academy of Sciences, Beijing 10049, China
| | - Xiao Wen Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of the Chinese Academy of Sciences, Beijing 10049, China
| | - Li Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of the Chinese Academy of Sciences, Beijing 10049, China
| | - Bai Ye Ruan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of the Chinese Academy of Sciences, Beijing 10049, China
| | - Bei Huang
- College of Fisheries, Jimei University, Xiamen 361021, China
| | - Wen Shu Huang
- College of Fisheries, Jimei University, Xiamen 361021, China
| | - Peng Fei Zou
- College of Fisheries, Jimei University, Xiamen 361021, China
| | - Jian Ping Fu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Li Juan Zhao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Nan Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
| |
Collapse
|
5
|
Zou PF, Chang MX, Li Y, Huan Zhang S, Fu JP, Chen SN, Nie P. Higher antiviral response of RIG-I through enhancing RIG-I/MAVS-mediated signaling by its long insertion variant in zebrafish. Fish Shellfish Immunol 2015; 43:13-24. [PMID: 25524497 DOI: 10.1016/j.fsi.2014.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 11/10/2014] [Accepted: 12/06/2014] [Indexed: 06/04/2023]
Abstract
As an intracellular pattern recognition receptor (PRR), the retinoic acid-inducible gene-I (RIG-I) is responsible for the recognition of cytosolic viral nucleic acids and the production of type I interferons (IFNs). In the present study, an insertion variant of RIG-I with 38 amino acids inserted in the N-terminal CARD2 domain, as well as the typical type, named as RIG-Ia and RIG-Ib respectively were identified in zebrafish. RIG-Ia and RIG-Ib were all up-regulated following the infection of a negative ssRNA virus, the Spring Viremia of Carp Virus (SVCV), and an intracellular Gram-negative bacterial pathogen Edwardsiella tarda, indicating the RLR may have a role in the recognition of both viruses and bacteria. The over-expression of RIG-Ib in cultured fish cells resulted in significant increase in type I IFN promoter activity, and in protection against SVCV infection, whereas the over-expression of RIG-Ia had no direct effect on IFN activation nor antiviral response. Furthermore, it was revealed that both RIG-Ia and RIG-Ib were associated with the downstream molecular mitochondrial antiviral signaling protein, MAVS, and interestingly RIG-Ia when co-transfected with RIG-Ib or MAVS, induced a significantly higher level of type I IFN promoter activity and the expression level of Mx and IRF7, implying that the RIG-Ia may function as an enhancer in the RIG-Ib/MAVS-mediated signaling pathway.
Collapse
Affiliation(s)
- Peng Fei Zou
- College of Fisheries, Jimei University, 43 Yindou Road, Xiamen, Fujian Province, 361021, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Ming Xian Chang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China.
| | - Ying Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, 430074, China
| | - Shu Huan Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Jian Ping Fu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Shan Nan Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China.
| |
Collapse
|
6
|
Zou PF, Chang MX, Xue NN, Liu XQ, Li JH, Fu JP, Chen SN, Nie P. Melanoma differentiation-associated gene 5 in zebrafish provoking higher interferon-promoter activity through signalling enhancing of its shorter splicing variant. Immunology 2014; 141:192-202. [PMID: 24116956 PMCID: PMC3904240 DOI: 10.1111/imm.12179] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 09/30/2013] [Accepted: 09/01/2013] [Indexed: 12/24/2022] Open
Abstract
Melanoma differentiation-associated gene 5 (MDA5) is one of the three members in the retinoic acid-inducible gene I-like receptor (RLR) family, which are cytoplasmic pathogen recognition receptors recognizing intracellular viruses. In the present study, MDA5 and its spliced shorter forms, named as MDA5a and MDA5b, were identified in zebrafish. MDA5a and MDA5b can be up-regulated in cell lines following the infection of a negative ssRNA virus, the spring viraemia of carp virus (SVCV), and an intracellular Gram-negative bacterial pathogen Edwardsiella tarda, implying that the RLR may also be able to sense elements released from bacteria. The over-expression of MDA5a and MDA5b in fish cells resulted in significant induction of type I interferon promoter activity and enabled the protection of transfected cells against SVCV infection. Furthermore, the shorter spliced form, MDA5b when co-transfected with MDA5a or mitochondrial antiviral signalling protein (MAVS), induced a significantly higher level of interferon promoter activity, indicating that MDA5b may function as an enhancer in the interaction between MDA5 and MAVS.
Collapse
Affiliation(s)
- Peng Fei Zou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, China; Graduate University of Chinese Academy of Sciences, Beijing, China; College of Fisheries, Jimei University, Xiamen, Fujian Province, China
| | | | | | | | | | | | | | | |
Collapse
|
7
|
Fu JP, Chen SN, Zou PF, Huang B, Guo Z, Zeng LB, Qin QW, Nie P. IFN-γ in turtle: conservation in sequence and signalling and role in inhibiting iridovirus replication in Chinese soft-shelled turtle Pelodiscus sinensis. Dev Comp Immunol 2014; 43:87-95. [PMID: 24239708 DOI: 10.1016/j.dci.2013.11.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 11/03/2013] [Accepted: 11/03/2013] [Indexed: 06/02/2023]
Abstract
The IFN-γ gene was identified in a turtle, the Chinese soft-shelled turtle, Pelodiscus sinensis, with its genome consisting of 4 exons and 3 introns. The deduced amino acid sequence of this gene contains a signal peptide, an IFN-γ family signature motif (130)IQRKAVNELFPT, an NLS motif (155)KRKR and three potential N-glycosylation sites. As revealed by real-time quantitative PCR, the gene was constitutively expressed in all tested organs/tissues, with higher level observed in blood, intestine and thymus. An induced expression of IFN-γ at mRNA level was observed in peripheral blood leucocytes (PBLs) in response to in vitro stimulation of LPS and PolyI:C. The overexpression of IFN-γ in the Chinese soft-shelled turtle artery (STA) cell line resulted in the increase in the expression of transcriptional regulators, such as IRF1, IRF7 and STAT1, and antiviral genes, such as Mx, PKR, implying possibly the existence of a conserved signalling network and role for IFN-γ in the turtle. Furthermore, the infection of soft-shelled turtle iridovirus (STIV) in the cell line transfected with IFN-γ may cause the cell death as demonstrated with the elevated lactate dehydrogenase (LDH) level and cell mortality. However, the mechanism involved in the antiviral activity may require further investigation.
Collapse
Affiliation(s)
- Jian Ping Fu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shan Nan Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province 430072, China
| | - Peng Fei Zou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province 430072, China
| | - Bei Huang
- College of Fisheries, Jimei University, 43 Yindou Road, Xiamen, Fujian Province 361021, China
| | - Zheng Guo
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province 430072, China
| | - Ling Bing Zeng
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, Hubei Province 430223, China
| | - Qi Wei Qin
- Key Laboratory of Tropical Marine Bioresources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, Guangdong Province 510301, China
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province 430072, China; College of Fisheries, Jimei University, 43 Yindou Road, Xiamen, Fujian Province 361021, China.
| |
Collapse
|
8
|
Abstract
The full-length complementary DNA (cDNA) sequences encoding cd8α and cd8β molecules were sequenced and characterized from mandarin fish Siniperca chuatsi. Conserved motifs and residues were found to be present in derived peptides of the Cd8 molecules. For example, WXR motif, DXGXYXC motif, and four cysteine residues were present in the extracellular region of the Cd8 protein. Threonine, serine and proline residues involved in multiple O-linked glycosylation events were located in the membrane proximal hinge region. The common CPH motif in the cytoplasmic tail was detected similar to other teleost Cd8 molecules. Different from those in mammals, S. chuatsi Cd8 sequences have many extra cysteine residues (C149 in Cd8α sequence and C46, C51 and C158 in Cd8β sequence), which also exist in other teleost Cd8 molecules. Real-time polymerase chain reaction (RT-PCR) and Western blot analyses revealed that the thymus had the highest expression of cd8 messenger (m)RNA and protein. After stimulated with phytohaemagglutinin, polyriboinsine-polyribocyaidylic acid and concanavalin A (ConA), the expression level of cd8 mRNA increased significantly in head-kidney lymphocytes at 4 and 8 h, but decreased to normal level at 12 h. Similarly, stimulation with ConA in vivo also led to an increase in the cd8 mRNA level in the spleen. Immunohistochemistry analysis demonstrated that Cd8α-positive cells can be detected in the thymus, spleen and intestine by using polyclonal anti-Cd8α antibody.
Collapse
Affiliation(s)
- Z Guo
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | | | | | | |
Collapse
|
9
|
Guo HZ, Zou PF, Fu JP, Guo Z, Zhu BK, Nie P, Chang MX. Characterization of two C-type lectin-like domain (CTLD)-containing proteins from the cDNA library of Chinese mitten crab Eriocheir sinensis. Fish Shellfish Immunol 2011; 30:515-524. [PMID: 21134464 DOI: 10.1016/j.fsi.2010.11.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 11/13/2010] [Accepted: 11/28/2010] [Indexed: 05/30/2023]
Abstract
Chinese mitten crab Eriocheir sinensis is one of the most important aquaculture crustacean species in China. A cDNA library was constructed from mixed tissues of E. sinensis challenged with LPS. Eight genes involved in immune response were identified from 319 single colonies. Among them, two different C-type lectin-like domain (CTLD)-containing proteins were firstly identified in Chinese mitten crab. The full-length cDNA sequences of two C-type lectin-like domain (CTLD)-containing proteins named EsCTLDcp-1 and EsCTLDcp-2 were cloned by 5' RACE. The deduced amino acid sequences of EsCTLDcp-1 and EsCTLDcp-2 possessed several conserved features of C-type lectin subfamily. The tissue distribution of EsCTLDcp-1 and EsCTLDcp-2 was examined by Real-time PCR. In the normal Chinese mitten crab, the expression of EsCTLDcp-2 was detected in all tested tissues such as haemolymph, muscle, intestine, gill, heart, gonad and hepatopancreas, whereas in muscle, intestine, gill, heart and hepatopancreas for EsCTLDcp-1. The highest expressions of EsCTLDcp-1 and EsCTLDcp-2 were both observed in hepatopancreas. LPS significantly induced the expression of EsCTLDcp-1 and EsCTLDcp-2 in the hepatopancreas at the different time points. The induced fold change of EsCTLDcp-1 and EsCTLDcp-2 increased significantly from 2 h for EsCTLDcp-1 and 4 h for EsCTLDcp-2, and reached a maximum at 12 h, then dropped at 24 h. A differential pattern was found in Chinese mitten crab challenged with Chinese mitten crab pathogen Aeromonas hydrophila. The expression of EsCTLDcp-1 increased significantly at 2 h post-challenge crabs with A. hydrophila, then decreased at 4 h and 8 h, after that increased at 12 h and 24 h. The expression of EsCTLDcp-2 was decreased at the all time points. All these data suggest a differential role of EsCTLDcp-1 and EsCTLDcp-2 in the crab innate immune response to bacterial infection.
Collapse
Affiliation(s)
- H Z Guo
- State Key Laboratory of Freshwater Ecology and Biotechnology, and Laboratory of Fish Diseases, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province 430072, PR China
| | | | | | | | | | | | | |
Collapse
|
10
|
Chen SY, Lin WC, Deng SC, Chang SC, Fu JP, Dai NT, Chen SL, Chen TM, Chen SG. Assessment of the perforators of anterolateral thigh flaps using 64-section multidetector computed tomographic angiography in head and neck cancer reconstruction. Eur J Surg Oncol 2010; 36:1004-11. [PMID: 20719469 DOI: 10.1016/j.ejso.2010.07.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 06/20/2010] [Accepted: 07/15/2010] [Indexed: 11/17/2022] Open
Affiliation(s)
- S Y Chen
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, No. 325, Section 2, Cheng-Gung Road, Taipei 11490, Taiwan
| | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Xu LQ, Xiao DH, Zhou CH, Zhang XQ, Lan SG, Zhen XX, Zhang WL, Fu JP, Ye B, Dang H, Zhu XZ, Huang SL. [On cleanliness of hands in diminution of Ascaris lumbricoides infection in children]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2003; 19:294-7. [PMID: 12572046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To study the relationship between cleanliness of children's hands and diminution of Ascaris lumbricoides infection. METHODS Before the study all persons positive for ascaris eggs in the preliminary survey were treated with albendazole. Hand-washing habit before meal and after defecation was kept in children of experimental group, but not in the control group. Kato thick smear stool examination was done once every two months for one year to compare the new infection rates in children without ascaris infection in the two groups, and the reinfection rates in the cured negative cases were also compared between them in half a month after chemotherapy. RESULTS All the new infection rates as well as reinfection rates of each reexamination in the experimental group were significantly lower than that of the control group (P < 0.001). Reexamination one year later showed that the ascaris infection rate of the experimental group was 35.2%, reducing by 48.5% as compared with 68.3% before the operation of the project; while ascaris infection rate of the control group was 73.7%, increasing by 78.0% as compared with 41.4% before the operation of the project. CONCLUSION Washing hands with toilet soap to keep hands clean can significantly reduce ascaris infection rate.
Collapse
Affiliation(s)
- L Q Xu
- Institute of Parasitic Diseases, Chinese Academy of Preventive Medicine, WHO Collaborating Center for Malaria, Schistosomiasis and Filariasis, Shanghai 20025
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Gu YC, Yang QG, Fu JP, Yang MK. [Determination of indirubin (author's transl)]. Yao Xue Xue Bao 1980; 15:308-11. [PMID: 7457151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|