The surface syndecan protein from Macrobrachium rosenbergii could function as mediator in bacterial infections
| Autor: | Haoran Xiong, Xiaojun Zhang, Kaihang Mi, Guohong Chen, Yingying Zhang, Hui Yang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Syndecans animal structures Cell Hepatopancreas Aquatic Science Gram-Positive Bacteria Arthropod Proteins Syndecan 1 Microbiology 03 medical and health sciences chemistry.chemical_compound Cell surface receptor Gram-Negative Bacteria medicine Animals Environmental Chemistry Receptor Pathogen biology Macrobrachium rosenbergii 04 agricultural and veterinary sciences General Medicine Heparan sulfate biology.organism_classification carbohydrates (lipids) Aeromonas hydrophila 030104 developmental biology medicine.anatomical_structure chemistry 040102 fisheries 0401 agriculture forestry and fisheries Palaemonidae |
| Zdroj: | Fish & Shellfish Immunology. 96:62-68 |
| ISSN: | 1050-4648 |
| Popis: | Due to the aquatic animal pathogens are numerous and specific, the pathogen invasion mechanisms are more complicated. The cell surface receptors play vital roles to understand these mechanisms. Syndecan is a cell surface protein and could function as a receptor involved bacteria and virus infections. But there are few studies on the function of syndecan in shrimp and their interaction with aquatic bacterial pathogens. In the present study, we identified a syndecan receptor gene from Macrobrachium rosenbergii and analyzed its functions during the bacterial infections. The MrSDC was expressed in various tissues and presented a constitutive expression distribution except in eyestalk. Recombinant MrSDC-his tag protein was expressed in the E. coli BL21 with pET30a/MrSDC plasmid and exhibited a broad bacterial binding activities. The inhibition of MrSDC expression by dsRNA interference and antibody blocked could significantly reduce the number of Aeromonas hydrophila in hepatopancreas compared with the control. The overexpression of MrSDC by mRNA injection could significantly increase the number of A. hydrophila. In addition, the functional role of syndecan heparan sulfate chains in bacterial recognition was also studied. After extra injection of heparan sulfate in vivo, the bacterial numbers and accumulative mortality of M. rosenbergii were significantly higher than control groups and exhibit a dose effect. All these data could indicate that the cell surface syndecan protein could function as mediator in bacterial infections by the heparan sulfate chains. Our present study will provide new insights into the functions of shrimp syndecan. |
| Databáze: | OpenAIRE |
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