Development of large-scale amplification process of rabies virus in 150 L bioreactor / 中国生物制品学杂志
Chinese Journal of Biologicals
; (12): 718-722+730, 2024.
Article
en Zh
| WPRIM
| ID: wpr-1032201
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ABSTRACT
@#Objective To develop a large-scale culture process for rabies virus(RABV)in 150 L bioreactor,and lay a foundation for the further development of a larger-scale and high-density microcarrier reactor process.Methods Vero cells and RABV strain CTN-1V were cultured in 30 L(modelC30-2)and 150 L(modelVESSEL FERMENTER 300L)bioreactors by perfused culture with 20 g/L Cytodex-1 microcarrier and DO 20%-60%,at culture temperature 36-38 ℃ and pH 7.0-7.4.During the culture process,the cell density and virus titer were measured.The virus culture media was harvested for consecutive 13 d and detected for the sterility,mycoplasma,and the residues of antigen,host cell protein(HCP),bovine serum albumin(BSA)and DNA.Results The density of cultured cells in 30 L and 150 L bioreactors all reached above 1.2 ×10~7cell/mL.There was no significant difference in cell density at different time points during the culture(t = 0.225-2.173,P = 0.096-0.833).The highest virus titer(8.5 lgLD_(50)/mL)was found in the both bioreactors 6 d after infection with no significant difference(t = 1.000,P = 0.374).The residues of antigen,HCP,BSA and DNA in the virus suspension from the two bioreactors were basically the same.Conclusion 150 L bioreactor can be used for the large-scale culture of RABV,and the harvested virus conformed to the relevant standards in Chinese Pharmacopoeia(Volume Ⅲ,2020 edition).
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Zh
Revista:
Chinese Journal of Biologicals
Año:
2024
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Article