Application of orthogonal analysis to the optimization of HPV16 E2 protein expression / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 988-991, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-359139
ABSTRACT
This study was aimed to identify pET21b-HPV16E2/BL21(DE3) strain and to optimize the expression of human papillomavirus type 16 (HPV16) E2 protein by orthogonal analysis. Four influence factors on two levels were selected to increase the target protein quantity. The four factors were induction time, induction temperature, inductor concentration and cell density. The quantity of HPV16 E2 protein was used as the evaluation parameter. Induced by IPTG, HPV16 E2 protein was analyzed by SDS-PAGE and Western Blot. Target protein was analyzed by GIS imaging system to quantify the protein level. SPSS13. 0 software was applied to analyze the result. Data showed that the expression strain pET211rHPV16 E2/BL21(DE3) was identified correctly. HPV16 E2 protein expressed mainly at insoluble form. The 42KD protein band was identified by SDS-PAGE and Western blot. Orthogonal test was applied on influence factor analysis and expression optimization successfully. Main influence factors were inductor concentration and induction temperature. The optimimum condition of maximum expression quantity was 37 degrees C, 7h, 1.0 mmol/L IPTG and OD600 1.0. In this experiment, orthogonal test could not only be used to analyze the influential factors and promote the target protein expression, but also be used to provide a better experiment method for molecular biological study.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Virology
/
Recombinant Proteins
/
Oncogene Proteins, Viral
/
Papillomavirus Infections
/
DNA-Binding Proteins
/
Human papillomavirus 16
/
Genetic Vectors
/
Genetics
/
Metabolism
Type of study:
Prognostic study
Limits:
Humans
Language:
Chinese
Journal:
Journal of Biomedical Engineering
Year:
2011
Type:
Article
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