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Molecular cloning and characterization of a putative mitogen-activated protein kinase (Erk1/2) gene: Involvement in mantle immunity of Pinctada fucata
Zhang, Hua1; Ou, Zekui1; Xu, Meng1; Huang, Xiande; Liu, Wenguang; Shi, Yu; He, Maoxian
2018
Source PublicationFISH & SHELLFISH IMMUNOLOGY
ISSN1050-4648
Volume80Pages:63
AbstractExtracellular signal-regulated kinases (ERKs) are conserved and related with protein-serine/threonine kinases that participate in the regulation of multiple biological processes, such as cell survival, cell differentiation, proliferation, metabolism, and inflammation. However, little is known about the roles of this kinase in the pearl oyster. In this study, we cloned and identified an ERK homolog from Pinctada fucata (PfErk). Furthermore, we have unraveled its expressional kinetics after lipopolysaccharide (LPS) and polyinosinic-epolycytidylic acid (poly I:C) immune challenge. Pferk harbored a 5' untranslated region (UTR) of 12 bp, a coding sequence of 1074 bp, and a 3' UTR of 882 bp. The putative peptide comprised a predicted molecular mass of 41.19 kDa, with a theoretical pI of 6.15. Sequence analysis showed that it possesses one STK catalytic domain and a conserved His-Arg-Asp (HRD) domain. In addition, a canonical Thr-Glu-Tyr (TEY) dual phosphorylation motif and an ATRW substrate binding site were also identified in the coding protein. Homology assessment of PfErk showed high similarity to Homo sapiens ERK. Phylogenetic analysis supported a close evolutionary relationship with molluscan orthologs. The expression patterns of Pferk were observed in seven different tissues of pearl oyster, with highest expression in the mantle and lowest expression in the digestive gland. Pferk mRNA expression levels were detected at developmental stages, with the highest expression in D-shaped larvae, followed by the 32-cell stage. The mRNA expression of Pferk was upregulated significantly in P. fucata mantle primary cells and mantle tissue after LPS and poly (I:C) treatment, and PfErk phosphorylation levels were activated by LPS and poly (I:C) challenges. Overall, our results suggested that PfErk may play important roles in pearl oyster innate immunity, and provided a new understanding of mantle immunity in the pearl oyster.
DepartmentLMB
KeywordPinctada fucata Expression patterns Mantle immunity ERK
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17640
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Prov Key Lab Appl Marine Biol, CAS Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Hua,Ou, Zekui,Xu, Meng,et al. Molecular cloning and characterization of a putative mitogen-activated protein kinase (Erk1/2) gene: Involvement in mantle immunity of Pinctada fucata[J]. FISH & SHELLFISH IMMUNOLOGY,2018,80:63, 70.
APA Zhang, Hua.,Ou, Zekui.,Xu, Meng.,Huang, Xiande.,Liu, Wenguang.,...&He, Maoxian.(2018).Molecular cloning and characterization of a putative mitogen-activated protein kinase (Erk1/2) gene: Involvement in mantle immunity of Pinctada fucata.FISH & SHELLFISH IMMUNOLOGY,80,63.
MLA Zhang, Hua,et al."Molecular cloning and characterization of a putative mitogen-activated protein kinase (Erk1/2) gene: Involvement in mantle immunity of Pinctada fucata".FISH & SHELLFISH IMMUNOLOGY 80(2018):63.
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