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Ding WF, Sun N, Liu ZG, Zhang X, Li X, Chen H, Feng Y. Study of the heterologous gene expression characteristics of a new clone of a cell line derived from Papilio xuthus and its serum-free adaptation. In Vitro Cell Dev Biol Anim 2022; 58:365-375. [PMID: 35653076 DOI: 10.1007/s11626-022-00687-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 04/28/2022] [Indexed: 11/29/2022]
Abstract
The baculovirus expression vector system using insect cells as a bioreactor has been used for in vitro expression of recombinant proteins and plays an important role in the fields of biology, agronomy, and medicine. Screening suitable host cell lines is an important part of the construction of insect cell baculovirus expression systems. In previous research, we used a single-cell cloning process with the Papilio xuthus cell line RIRI-PX1 and obtained the monoclonal cell line RIRI-PX1-C31. In this study, we compared the basic biological and recombinant protein expression characteristics of RIRI-PX1-C31 and its parent cell line RIRI-PX1 and found that the expression of recombinant β-galactosidase in RIRI-PX1-C31 was significantly higher than that in the parental cell line. Further serum-free adaptation studies confirmed that RIRI-PX1-C31 can adapt to the growth environment of Express Five Serum-free medium and that its expression level of recombinant β-galactosidase was significantly higher than that before adaptation.
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Affiliation(s)
- Wei-Feng Ding
- Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650224, China.,Key Laboratory of Breeding and Utilization of Resource Insects, National Forestry and Grassland Administration, Kunming, 650224, China
| | - Na Sun
- Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650224, China.,Key Laboratory of Breeding and Utilization of Resource Insects, National Forestry and Grassland Administration, Kunming, 650224, China
| | - Zhi-Gang Liu
- Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650224, China.,Key Laboratory of Breeding and Utilization of Resource Insects, National Forestry and Grassland Administration, Kunming, 650224, China
| | - Xin Zhang
- Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650224, China.,Key Laboratory of Breeding and Utilization of Resource Insects, National Forestry and Grassland Administration, Kunming, 650224, China
| | - Xian Li
- Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650224, China
| | - Hang Chen
- Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650224, China.,Key Laboratory of Breeding and Utilization of Resource Insects, National Forestry and Grassland Administration, Kunming, 650224, China
| | - Ying Feng
- Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650224, China. .,Key Laboratory of Breeding and Utilization of Resource Insects, National Forestry and Grassland Administration, Kunming, 650224, China.
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Screening of single-cell clonal lines from Papilio demoleus Linnaeus cell lines for exogenous protein expression and adaptation in serum-free culture. In Vitro Cell Dev Biol Anim 2020; 56:444-451. [PMID: 32737835 DOI: 10.1007/s11626-020-00484-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 07/13/2020] [Indexed: 10/23/2022]
Abstract
In this paper, four established cell lines derived from newly hatched larvae of Papilio demoleus Linnaeus and 57 single-cell clones derived from the 3 lines were used as test materials. Recombinant β-galactosidase baculovirus AcMNPV-Gal was used to infect the P. demoleus L. cell lines and the single-cell clones, and recombinant protein expression in each cell line was detected and compared. Three clonal cell lines, RIRI-PaDe-1-C1, RIRI-PaDe-2-C6 and RIRI-PaDe-3-C52, which showed significantly higher β-galactosidase expression levels than those of the parental cell lines, were selected. Five types of commercial serum-free media for insect cells, Express Five SFM, Ex-Cell 405, Sf-900III SFM, Sf-900II SFM and HyClone Serum-Free Media, were used to adapt RIRI-PaDe-2-C6 cells and RIRI-PaDe-3-C52 cells to serum-free culture conditions, and the growth characteristics of the cells and the exogenous protein expression characteristics before and after adaptation were compared. The results showed that RIRI-PaDe-2-C6 cells could stably proliferate in Ex-Cell 405, RIRI-PaDe-3-C52 cells could stably proliferate in Express Five SFM and Ex-Cell 405, and the rate of proliferation of and the level of expression of β-galactosidase in RIRI-PaDe-3-C52 cells were significantly increased in Express Five SFM.
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