Chinese Journal of Tissue Engineering Research ›› 2024, Vol. 28 ›› Issue (1): 7-11.doi: 10.12307/2023.767

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Removal of the selective marker gene in the fusion gene expression vector of plant anti-caries vaccine

Lang Yaoling1, 2, Wang Qian1, Chen Bin1, Bai Guohui1, Guan Xiaoyan1, Liu Jianguo1   

  1. 1Guizhou Provincial Key Laboratory of Oral Disease Research in Colleges and Universities and Zunyi Key Laboratory of Oral Disease Research, School of Stomatology, Zunyi Medical University, Zunyi 563000, Guizhou Province, China; 2Guiyang Stomatological Hospital, Guiyang 550002, Guizhou Province, China
  • Received:2022-11-03 Accepted:2022-12-24 Online:2024-01-08 Published:2023-06-28
  • Contact: Liu Jianguo, MD, Professor, Chief physician, Doctoral supervisor, Guizhou Provincial Key Laboratory of Oral Disease Research in Colleges and Universities and Zunyi Key Laboratory of Oral Disease Research, School of Stomatology, Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • About author:Lang Yaoling, Master, Attending physician, Guizhou Provincial Key Laboratory of Oral Disease Research in Colleges and Universities and Zunyi Key Laboratory of Oral Disease Research, School of Stomatology, Zunyi Medical University, Zunyi 563000, Guizhou Province, China; Guiyang Stomatological Hospital, Guiyang 550002, Guizhou Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81260164 (to LJG); The Sixth Batch of Talent Bases in Guizhou Province of the Organization Department of Guizhou Provincial Party Committee, No. RCJD2019-9 (to LJG); The First Batch of Zunyi Municipal Talent Bases, No. Zunyi KHSZ[2017]20 (to LJG); Young Scientific and Technological Talent Growth Project of the Department of Education of Guizhou Province, No. QJHKYZ[2022]276 (to CB); Science and Technology Fund Project of Guizhou Provincial Health Commission, No. gzwkj2021-351 (to CB)

Abstract: BACKGROUND: In consideration of the food safety and ecological safety of transgenic plants, the retention of marker genes is the primary safety issue affecting transgenic plants.  
OBJECTIVE: Based on the principle of immune caries prevention, our research team successfully constructed the plant anti-caries vaccine fusion gene expression vector pCAMBIA-E8-APB-DOCK8 for these two caries causing virulence factors surface protein and glucosyltransferase, which provides a basis for the research and development of transgenic plant vaccine.
METHODS: In this study, the selective marker genes Km and GUS in the plant caries vaccine fusion gene expression vector pCAMBIA-E8-APB-DOCK8 were removed by DNA recombination technology through a series of steps such as DNA fragment separation, connection, transformation, clone detection, and sequencing.  
RESULTS AND CONCLUSION: The efficiency of marker gene removal was 99%. This study has laid a good experimental foundation for the safe production of transgenic plant vaccine against dental caries, and also provided ideas for the construction of other plant vaccine vectors.

Key words: plant vaccine, immune anti-caries, expression vector, marker gene, transgenic safety, E8 promoter

CLC Number: