TY - JOUR
T1 - Optimizing conditions for calcium phosphate mediated transient transfection
AU - Guo, Ling
AU - Wang, Liyang
AU - Yang, Ronghua
AU - Feng, Rui
AU - Li, Zhongguang
AU - Zhou, Xin
AU - Dong, Zhilong
AU - Ghartey-Kwansah, George
AU - Xu, Meng Meng
AU - Nishi, Miyuki
AU - Zhang, Qi
AU - Isaacs, Williams
AU - Ma, Jianjie
AU - Xu, Xuehong
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant Nos. 31371256, 31571273), the National Department of Education Central Universities Research Fund (Grant No. GK20130100), the Foreign Distinguished Scientist Program (Grant No. MS2014SXSF038), US Maryland Stem Cell Research Fund (2009MSCRFE008300), Qinba Mountain Developing Center (Grant No. CIC-QBRSD) and the Outstanding Doctoral Thesis fund (Grant Nos. X2014YB02, X2015YB05).
Publisher Copyright:
© 2017 The Authors
PY - 2017/3/1
Y1 - 2017/3/1
N2 - Background Calcium phosphate mediated transfection has been used for delivering DNA into mammalian cells in excess of 30 years due to its most low cost for introducing recombinant DNA into culture cells. However, multiple factors affecting the transfect efficiency are commonly recognized meanwhile for years, the low transfection efficiency of this approach on higher differentiated and non-tumor cells such as CHO and C2C12 limits its application on research. Results In this paper, we systematically evaluated the possible factors affecting the transfection rate of this approach. Two categories, calcium phosphate–DNA co-precipitation and on-cell treatments were set for optimization of plasmid DNA transfection into CHO and C2C12 cell-lines. Throughout experimentation of these categories such as buffer system, transfection media and time, glycerol shocking and so on, we optimized the best procedure to obtain the highest efficiency ultimately. During calcium phosphate DNA-precipitation, the transfection buffer is critical condition optimized with HBS at pH 7.10 (P = 0.013 compared to HEPES in CHO). In the transfection step, FBS is a necessary component in transfection DMEM for high efficiency (P = 0.0005 compared to DMEM alone), and high concentration of co-precipitated particles applied to cultured cells in combination with intermittent vortexing is also crucial to preserve the efficiency. For 6-well culture plates, 800 µl of co-precipitated particles (11.25 µg/mL of cDNA) in 1 well is the optimal (P = 0.007 compared to 200 µl). For the highest transfection efficiency, the most important condition is glycerol in shock treatment (P = 0.002 compared to no shock treatment in CHO, and P = 0.008 compared to no shock treatment in C2C12) after a 6 h incubation (P = 0.004 compared to 16 h in CHO, and P = 0.039 compared to 16 h in C2C12) on cultured cells. Conclusions Calcium phosphate mediated transfection is the most low-cost approach to introduce recombinant DNA into culture cells. However, the utility of this procedure is limited in highly-differentiated cells. Here we describe the specific HBS-buffered saline, PH, glycerol shock, vortex strength, transfection medium, and particle concentrations conditions necessary to optimize this transfection method in highly differentiated cells.
AB - Background Calcium phosphate mediated transfection has been used for delivering DNA into mammalian cells in excess of 30 years due to its most low cost for introducing recombinant DNA into culture cells. However, multiple factors affecting the transfect efficiency are commonly recognized meanwhile for years, the low transfection efficiency of this approach on higher differentiated and non-tumor cells such as CHO and C2C12 limits its application on research. Results In this paper, we systematically evaluated the possible factors affecting the transfection rate of this approach. Two categories, calcium phosphate–DNA co-precipitation and on-cell treatments were set for optimization of plasmid DNA transfection into CHO and C2C12 cell-lines. Throughout experimentation of these categories such as buffer system, transfection media and time, glycerol shocking and so on, we optimized the best procedure to obtain the highest efficiency ultimately. During calcium phosphate DNA-precipitation, the transfection buffer is critical condition optimized with HBS at pH 7.10 (P = 0.013 compared to HEPES in CHO). In the transfection step, FBS is a necessary component in transfection DMEM for high efficiency (P = 0.0005 compared to DMEM alone), and high concentration of co-precipitated particles applied to cultured cells in combination with intermittent vortexing is also crucial to preserve the efficiency. For 6-well culture plates, 800 µl of co-precipitated particles (11.25 µg/mL of cDNA) in 1 well is the optimal (P = 0.007 compared to 200 µl). For the highest transfection efficiency, the most important condition is glycerol in shock treatment (P = 0.002 compared to no shock treatment in CHO, and P = 0.008 compared to no shock treatment in C2C12) after a 6 h incubation (P = 0.004 compared to 16 h in CHO, and P = 0.039 compared to 16 h in C2C12) on cultured cells. Conclusions Calcium phosphate mediated transfection is the most low-cost approach to introduce recombinant DNA into culture cells. However, the utility of this procedure is limited in highly-differentiated cells. Here we describe the specific HBS-buffered saline, PH, glycerol shock, vortex strength, transfection medium, and particle concentrations conditions necessary to optimize this transfection method in highly differentiated cells.
KW - Calcium phosphate transfection
KW - Co-precipitation
KW - Transfection efficiency
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U2 - 10.1016/j.sjbs.2017.01.034
DO - 10.1016/j.sjbs.2017.01.034
M3 - Article
C2 - 28386188
AN - SCOPUS:85014132232
SN - 1319-562X
VL - 24
SP - 622
EP - 629
JO - Saudi Journal of Biological Sciences
JF - Saudi Journal of Biological Sciences
IS - 3
ER -