1
|
Liu N, Huang J, Liu L, Boadi F, Song Y, Guo Z, Shen X, Hao B. 18 Additional Amino Acids of the Signal Peptide of the Bombyx mori Nucleopolyhedrovirus GP64 Activates Immunoglobulin Binding Protein (BiP) Expression by RNA-seq Analysis. Curr Microbiol 2021; 78:490-501. [PMID: 33386938 DOI: 10.1007/s00284-020-02309-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/24/2020] [Indexed: 10/22/2022]
Abstract
GP64 is the key membrane fusion protein of Group I baculovirus, and while the Bombyx mori nucleopolyhedrovirus (BmNPV) GP64 contains a longer n-region (18 amino acid) of the signal peptide than does the Autographa californica multiple nucleopolyhedrovirus (AcMNPV), the function of the n-region has not been determined. In this study, we first showed that n-region is required for membrane protein localization in BmN cells, then the transcriptome sequencing was conducted on proteins guided by different signal peptide regions, and the results were analyzed and validated by quantitative PCR and luciferase assays. The results indicated that 1049 differentially expressed genes (DEGs) were identified among the different region of signal peptides and the control. With the n-region, the protein export pathway was upregulated significantly, the Wnt-1 signaling pathway was downregulated, and BiP was significantly activated by the GP64 full-length signal peptide. Furthermore, RNA interference on BiP efficiently increased luciferase secretion. These results indicate that the GP64 n-region plays a key role in protein expression and regulation.
Collapse
Affiliation(s)
- Na Liu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, People's Republic of China
| | - Jinshan Huang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, People's Republic of China
| | - Lin Liu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, People's Republic of China
| | - Frank Boadi
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, People's Republic of China
| | - Yanhui Song
- Department of Clinical Laboratory, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, 215031, Jiangsu, People's Republic of China
| | - Zhongjian Guo
- Institute of Life Sciences, Jiangsu University, Zhenjiang, 212013, Jiangsu, People's Republic of China
| | - Xingjia Shen
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, People's Republic of China
| | - Bifang Hao
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, 212018, Jiangsu, People's Republic of China.
| |
Collapse
|
2
|
Tasumi S, Kobayashi K, Takanashi S, Asakawa S, Nakamura O, Kikuchi K, Suzuki Y. Expression and presentation of immune-related membrane proteins of fish by a cell surface display platform using insect cells. Mol Immunol 2019; 114:553-560. [PMID: 31521019 DOI: 10.1016/j.molimm.2019.07.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 06/26/2019] [Accepted: 07/21/2019] [Indexed: 01/12/2023]
Abstract
Cell surface display is a useful platform to examine the interactions between two proteins of interest, such as immune receptors and ligands. This technique is also useful for studies on the immune receptors of lower vertebrates and invertebrates. However, in many cases, the commonly used cell culture temperature is relatively high for proteins from such organisms. Since insect cells can be cultured at lower temperatures than many other cells, and since they are equipped with "quality control" system, which is advantageous for the presentation of properly folded proteins, we anticipated that the insect cell surface display system could be more suitable for that type of research. In the present study, multiple cloning site of the commercially available expression vector pIB/V5-His was modified, and whether this vector could be useful to present fish immune-related membrane proteins was investigated. Using this plasmid, fugu's CD8α and CC chemokine receptor 7 could be presented on the cell surface. The clones of the lamprey variable lymphocyte receptors obtained previously by the yeast surface display (YSD) system as hen's egg lysozyme (HEL) binders also could be presented on the cell surface and bound to HEL. These results suggest that functional immune-related membrane proteins can be presented on the insect cell surface, indicating that this system is useful for immunological studies on exothermal animals.
Collapse
Affiliation(s)
- Satoshi Tasumi
- Fisheries Laboratory, The University of Tokyo, Hamamatsu, Shizuoka, 431-0214, Japan.
| | - Keisuke Kobayashi
- School of Marine Biosciences, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan.
| | - Shihori Takanashi
- Fisheries Laboratory, The University of Tokyo, Hamamatsu, Shizuoka, 431-0214, Japan.
| | - Shuichi Asakawa
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan.
| | - Osamu Nakamura
- School of Marine Biosciences, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan.
| | - Kiyoshi Kikuchi
- Fisheries Laboratory, The University of Tokyo, Hamamatsu, Shizuoka, 431-0214, Japan.
| | - Yuzuru Suzuki
- Fisheries Laboratory, The University of Tokyo, Hamamatsu, Shizuoka, 431-0214, Japan.
| |
Collapse
|