Abstract：
:TLR7 subfamily members are important pattern recognition receptors participating in the recognition of pathogen-associated molecular patterns. In this study, we successfully identified 3 members of TLR7 subfamily from the spiny eel Mastacembelus armatus (MaTLR7, MaTLR8 and MaTLR9). The amino acid sequence identities of MaTLR7 and MaTLR8 with Monopterus albus TLR7 were 87.2% and 76.5%, respectively and the identity of MaTLR9 with Seriola lalandi TLR9 was 74.7%. The phylogenetic analysis revealed MaTLRs showed close relationship to other species in Synbranchiformes or Perciformes. Quantitative real-time PCR analysis revealed that they were expressed in all tested tissues and higher expression was found in spleen or gill. After infection with Aeromonas veronii, expression of MaTLR7, MaTLR8 and MaTLR9 were all significantly downregulated in spleen and kidney. Evolutionary analysis suggested that the ancestral lineages of teleost TLR8 and TLR9 had been subject to positive selection pressures and multiple Maximum likelihood methods recovered 3 positively selected sites in teleost TLR7, 4 in TLR8 and 8 in TLR9. Domain distribution revealed most positively selected sites were located in leucine-rich repeat domain. Our results will contribute to better understanding the antibacterial mechanism of TLRs and their co-evolution with pathogens.
journal_name
Dev Comp Immunoljournal_title
Developmental and comparative immunologyauthors
Han C,Li Q,Liu J,Hao Z,Huang J,Zhang Ydoi
10.1016/j.dci.2019.02.002subject
Has Abstractpub_date
2019-06-01 00:00:00pages
77-88eissn
0145-305Xissn
1879-0089pii
S0145-305X(18)30560-3journal_volume
95pub_type
杂志文章abstract：:In recent years zebrafish has emerged as an excellent model for studying the Cxcl8 signaling pathway in inflammation elicited upon tissue damage or infection. Zebrafish has two true homologs of mammalian CXCL8, named Cxcl8-l1 and Cxcl8-l2. Previously, we have shown that in wound-associated inflammation, these chemokin...
journal_title：Developmental and comparative immunology
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journal_title：Developmental and comparative immunology
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abstract：:At birth the tissues of marsupial immune system are underdeveloped. The young animal is not immunocompetent. Histological and immunohistochemical studies of pouch young epithelial tissues provide a clear picture of tissue development but the timing of onset of immunocompetence awaits definition. The survival of the ne...
journal_title：Developmental and comparative immunology
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doi：10.1016/s0145-305x(00)00008-2
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abstract：:The ontogeny of lymphocyte surface markers was studied in thymus, retropharyngeal lymph nodes, spleen, bone marrow, and liver of 48 bovine foetuses, 80-280 days of gestation. The markers examined were the spontaneous (E) rosette against sheep erythrocytes (SRBCs) in foetal calf serum (E/FCS), in medium supplemented wi...
journal_title：Developmental and comparative immunology
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abstract：:Parasitic copepods, in particular sea lice, have considerable impacts upon global freshwater and marine fisheries, with major economic consequences recognized primarily in aquaculture. Sea lice have been a contentious issue with regards to interactions between farmed and wild populations of fish, in particular salmoni...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章,评审
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journal_title：Developmental and comparative immunology
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doi：10.1016/j.dci.2011.09.008
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journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/0145-305x(85)90113-2
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journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/0145-305x(89)90003-7
更新日期：1989-07-01 00:00:00
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journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2017.12.019
更新日期：2018-04-01 00:00:00
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journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2005.01.004
更新日期：2005-01-01 00:00:00
abstract：:Although gene segments specifying Igs of all vertebrates show clear homology, their arrangements differ markedly, thereby suggesting that the mechanisms for the generation of diversity and for the regulation of gene expression may be quite distinct. In the sandbar shark, light chain gene segments are distributed as ap...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/0145-305x(93)90014-h
更新日期：1993-01-01 00:00:00
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journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2020.103662
更新日期：2020-06-01 00:00:00
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journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2020.103844
更新日期：2021-01-01 00:00:00
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journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2020.103871
更新日期：2021-01-01 00:00:00
abstract：:The prophenoloxidase activating system is a defense system, frequently reported both in protostomes and in deuterostomes. The final product of the phenoloxidase activity is melanin which is ubiquitously present throughout the metazoan kingdom. The melanin synthesis pathway starts with the amino acid [aa] phenylalanine...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/s0145-305x(98)00034-2
更新日期：1998-09-01 00:00:00
abstract：:Siglecs (sialic acid-binding immunoglobulin-type lectins) are a family of immune regulatory receptors predominantly found on the cells of the hematopoietic system. A V-set Ig-like domain mediates the recognition of different sialylated glycoconjugates, which can lead to the activation or inhibition of the immune respo...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章,评审
doi：10.1016/j.dci.2018.05.008
更新日期：2018-09-01 00:00:00
abstract：:Stimulator of interferon gene (STING), an important adapter responsible for RLR pathway, plays a pivotal role in both viral RNA- and DNA-triggered induction of IFNs in mammals. To understand the roles of STING in piscine immune system, STING gene (CiSTING) was identified from grass carp (Ctenopharyngodon idella). The ...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2014.03.001
更新日期：2014-07-01 00:00:00
abstract：:Hepcidin is an antimicrobial peptide responsive to bacterial infection. We report the characterization of a virus/double-stranded RNA (dsRNA) induction of hepcidin in rainbow trout (Oncorhynchus mykiss). Increased level of hepcidin mRNA was observed in trout macrophage RTS11 cells treated with polyinosinic-polycytidyl...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2007.03.009
更新日期：2007-01-01 00:00:00
abstract：:Opsonizing and agglutinating activities of plasma from the freshwater clam, Corbicula fluminea, were found to be inhibited by the sugars, 2-deoxy-D-glucose (deoxy-Glu) and N-acetyl-D-galactosamine (GalNAc). The plasma opsonin/agglutinin was subsequently isolated by a two-step separation procedure. Aldehyde-fixed rabbi...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/0145-305x(90)90032-a
更新日期：1990-10-01 00:00:00
abstract：:B lymphocyte-induced maturation protein 1 (Blimp-1), a transcription factor containing zinc finger, is required and sufficient to trigger terminal differentiation of B cells in mammals. The Blimp-1 (OnBlimp-1) from Nile tilapia (Oreochromis niloticus) was identified and characterized its expression pattern during B ce...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2019.05.002
更新日期：2019-09-01 00:00:00
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journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/s0145-305x(03)00086-7
更新日期：2004-01-01 00:00:00
abstract：:Echinoderms, an ancient and very successful phylum of marine invertebrates, play a central role in the maintenance of ecosystem integrity and are constantly exposed to environmental pressure, including: predation, changes in temperature and pH, hypoxia, pathogens, UV radiation, metals, toxicants, and emerging pollutan...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章,评审
doi：10.1016/j.dci.2014.11.013
更新日期：2015-03-01 00:00:00
abstract：:A hemagglutinin was isolated from hemocytes of the ascidian, Halocynthia roretzi, by a procedure including extraction and ion-exchange chromatography on CM-cellulose. The molecular weight of the hemagglutinin was estimated to be 120,000 by gel filtration. It was resistant to acid treatment but sensitive to alkali or h...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/0145-305x(91)90042-w
更新日期：1991-01-01 00:00:00
abstract：:Two continuous macrophage cell lines (LCM07 and LCM10) were established for the first time from the head kidney of the marine fish large yellow croaker (Larimichthys crocea). To date, both cell lines have been subcultured for more than 100 passages in 12 months. Notably, the LCM07 and LCM10 cells have distinct morphol...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2019.103477
更新日期：2020-01-01 00:00:00
abstract：:In this study, we examined the expression of epithelial Na(+) channel (ENaC) subunits in human peripheral blood lymphocytes, human lymph nodes and molluscan immunocytes using non-radioactive in situ hybridization. The results showed that T lymphocytes express the ENaC gamma subunit mRNA, and B lymphocytes the ENaC bet...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/s0145-305x(01)00097-0
更新日期：2002-06-01 00:00:00
abstract：:A range of marine invertebrates were screened for prophenoloxidase (a marker protein of the prophenoloxidase activating system) in the coelomic fluid or hemolymph. The crustaceans and the ascidian, Ciona intestinalis, displayed strongest activity, with low levels found in the starfish, Asterias rubens, the sea urchin,...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/0145-305x(91)90018-t
更新日期：1991-10-01 00:00:00
abstract：:Monoclonal antibodies (mAbs) specific for a putative antigen receptor (function associated molecule, FAM) on fish NCC were tested for their ability to initiate signal transduction responses. Anti-FAM hybridoma target cells were significantly lysed by NCC when tested by redirected lysis (RL). Redirected lysis was enhan...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/0145-305x(92)90040-j
更新日期：1992-09-01 00:00:00
abstract：:RIG-I like receptor (RLR) signaling functions importantly in host innate immune response against RNA virus, which is tightly regulated by a number of mechanisms to prevent aberrant interferon production. The suppressor of IKKε (SIKE) has been identified as a suppressor of IKKε and TBK1, which are key components of RLR...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2018.09.016
更新日期：2019-01-01 00:00:00
abstract：:The cysteine-rich strongylocins were the first antimicrobial peptides (AMPs) discovered from the sea urchin species, Strongylocentrotus droebachiensis. Homologous putative proteins (called SpStrongylocin) were found in the sister species, S. purpuratus. To demonstrate that they exhibit the same antibacterial activity ...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2009.10.006
更新日期：2010-03-01 00:00:00
abstract：:Toll-like receptor 5 (TLR5) is responsible for the recognition of bacterial flagellin in mammals and play an important role in innate immunity. In the present study, a TLR5M gene was cloned from turbot, Scophthalmus maximus, and its immune responsive expression was subsequently studied in vivo. The Scophthalmus maximu...
journal_title：Developmental and comparative immunology
pub_type： 杂志文章
doi：10.1016/j.dci.2018.03.020
更新日期：2018-08-01 00:00:00
