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A Stable CHO K1 Cell Line for Producing Recombinant Monoclonal Antibody Against TNF-α

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Abstract

Monoclonal antibodies (mAbs) are one of the most significant molecules in protein therapeutics. They are employed in the field of immunology, oncology and organ transplant. They have been also been employed for alleviating several bacterial and viral infections. Moreover, they have revolutionized the area of targeted therapy and improved the quality of treatments, as compared to other cytotoxic drugs and therapies. mAbs bind to specific molecules on the antigen and exhibit specificity towards that molecule, i.e. epitope. Thus, mAbs have immense opportunity to be explored for personalized therapy. The introduction of targeted mAb-based therapeutics has promoted many important scientific achievements in rheumatology. This has warranted additional investigations for developing newer mAb producing clones, to supplement the limited industrial production of certain mAb therapeutics. In this investigation, an integrative approach comprising optimized expression, selection and expansion was adopted to develop a mammalian cell line expressing mAb against TNF-α.The resulting stable clone is anticipated to serve as an economic alternative to the industrial clones, especially for research purposes. The clone was constructed for development of biosimilar of the highly valued therapeutic antibody, Humira.

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Abbreviations

mAb:

Monoclonal antibody

TNF- α:

Tumor necrosis factor alpha

CHO-K1:

Chinese hamster ovary –K1

G418:

Geneticin

FBS:

Fetal bovine serum

BSA:

Bovine serum albumin

ADCC:

Antibody dependent cell mediated cytoxicity

HRP:

Horseradish peroxidase

ELISA:

Enzyme-linked immunosorbent assay

HT:

Hypoxanthine

TMB:

Tetramethylenebenzidine

PCD:

Picogram protein/cell/day

HC:

Heavy chain

LC:

Light chain

IRES:

Internal ribosome entry site

FITC:

Fluorescein isothiocyanate

DAPI:

4′,6-Diamidino-2-phenylindole

IgG:

Immunoglobulin

Fc:

Fragment crystallizable region

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Acknowledgements

Kritika Gupta is thankful to Indian Council of Medical Research(ICMR), No. 3/1/3/JRF-2015/HRD-LS/29/31232/85 for fellowship and financial support. Deepak Modi is thankful to ICMR for financial support. Prajakta Dandekar is thankful to Department of Science and Technology (DST), Science and Engineering Research Board (SERB): Ramanujan Fellowship Grant (SR/S2/RJN-139/2011) and UGC for Start-up Grant20-1/2012 (BSR)/20-1(10)/2012(BSR). Ratnesh Jain is thankful to DBT, Ministry of Science and Technology: Ramalingaswami Fellowship Grant (BT/RLF/Re-entry/51/2011).

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Gupta, K., Modi, D., Jain, R. et al. A Stable CHO K1 Cell Line for Producing Recombinant Monoclonal Antibody Against TNF-α. Mol Biotechnol 63, 828–839 (2021). https://doi.org/10.1007/s12033-021-00329-4

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