Molecular characterization and expression analyses of three RIG-I-like receptor signaling pathway genes (MDA5, LGP2 and MAVS) in Larimichthys crocea
| Autor: | Jia-Lang Zheng, Shuyi Zhang, Changwen Wu, Bin Shen, Lin Zeng, Zhang Jianshe, Hu Yiwen, Aiyi Zhu |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Fish Proteins
0301 basic medicine medicine.medical_specialty Interferon-Induced Helicase IFIH1 Protein Conformation Aquatic Science Real-Time Polymerase Chain Reaction 03 medical and health sciences 0302 clinical medicine Molecular genetics medicine Animals Environmental Chemistry Larimichthys crocea Amino Acid Sequence Gene Adaptor Proteins Signal Transducing chemistry.chemical_classification biology LGP2 MDA5 General Medicine biology.organism_classification Molecular biology Immunity Innate Perciformes Amino acid Transmembrane domain Poly I-C 030104 developmental biology Gene Expression Regulation chemistry RIG-I-Like Receptor Signaling Pathway Sequence Alignment RNA Helicases 030215 immunology |
| Zdroj: | Fish & Shellfish Immunology. 55:535-549 |
| ISSN: | 1050-4648 |
| Popis: | In this study, we sequenced and characterized melanoma differentiation-associated antigen 5 (LcMDA5), laboratory of genetics and physiology 2 (LcLGP2) and mitochondrial antiviral signaling protein (LcMAVS) from large yellow croaker ( Larimichthys crocea ). The LcMDA5 encodes 969 amino acids and contains two caspase-associated and recruitment domains (CARDs), a DExDc (DExD/H box-containing domain), a HELICc (helicase superfamily C-terminal domain) and a C-terminal regulatory domain (RD). The LcLGP2 encodes 679 amino acids and contains a DExDc, a HELICc and a RD. The LcMAVS encodes 512 amino acids and contains a CARD, a proline-rich domain, a transmembrane helix domain and a putative TRAF2-binding motif ( 269 PVQDT 273 ). Phylogenetic analyses showed that all the three genes of large yellow croaker are clustered together with their counterparts from other teleost fishes. The Real-time PCR analyses showed that all the three genes were found to be constitutively expressed in all examined tissues in large yellow croaker, but all with relatively low expression levels. Expression analyses showed that the three genes were all rapidly and significantly upregulated in vivo after poly (I:C) challenge in peripheral blood, liver, spleen and head kidney tissues. The results indicate that the LcMDA5, LcLGP2 and LcMAVS might play important roles in antiviral immune responses. |
| Databáze: | OpenAIRE |
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