Generating Recombinant Monoclonal Antibodies From Mammalian Cell Cultures
Published: March 29, 2024
Abstract
Source: Nogales-Gadea, G. et al., Generation of Recombinant Human IgG Monoclonal Antibodies from Immortalized Sorted B Cells. J. Vis. Exp. (2015)
This video demonstrates a method of antibody generation from mammalian cells by introducing plasmid vectors with heavy and light chain genes. These vectors interact with polyethylenimine and enter the cells by forming polyplexes; later, they are translated into individual proteins and assembled into complete antibodies, which are secreted into the extracellular medium.
Protocol
All procedures involving sample collection have been performed in accordance with the institute's IRB guidelines. 1. Isolation of Peripheral Blood Mononuclear Cells (PBMCs) Centrifuge 25 ml of the participants' heparinized blood at 900 x g for 15 min, as soon as possible after the blood extraction. If there is less blood, scale down the reagents accordingly. Perform all the next steps in a hood. Transfer the serum to a clean tube. It can be u…
Disclosures
The authors have nothing to disclose.
Materials
| Histopaque-1077 | Sigma-Aldrich | 10771 | solution containing polysucrose and sodium diatrizoate |
| FACSAria II cell sorter | BD Biosciences | ||
| 96 U-bottom micro well plates | Costar | 3799 | |
| Advanced Roswell Park Memorial Institute (RPMI) 1640 medium | Gibco, Life Technologies | 12633-020 | |
| 30% v/v EBV-containing supernatant of the B95-8 cell line | ATCC | CRL-1612 | 3.4 x 108 copies/ml |
| CpG2006 | Invivogen | ODN 7909 | |
| Wi38 cells | Sigma-Aldrich | 90020107 | |
| Interleukin-2 | Roche | 10799068001 | |
| ELISA plates | Greiner Bio-One, Microlon | 655092 | |
| AffiniPure F(ab')2 Fragment Goat Anti-Human IgG, Fcγ Fragment Specific (unconjugated) | Jackson ImmunoResearch | 109-006-008 | |
| 4% non-fat dry milk (Blotting Grade Blocker) | Biorad | 170-6404 | |
| Human IgG | Sigma | I 2511 | HUMAN IgG purified Immunoglobulin, 5.6 mg/ml |
| Goat F(ab)2 antihuman IgG Fcγ (conjugated with peroxidase (PO)) | Jackson ImmunoResearch | 109-036-008 | |
| ELISA reader (Perkin Elmer 2030) | Perkin Elmer | 2030-0050 | |
| Peroxidase-conjugated AffiniPure Rabbit Anti-Human IgM, Fc5µ | Jackson ImmunoResearch | 309-035-095 | |
| SuperScript III Cells Direct cDNA Synthesis System | Invitrogen | 18080-200 | |
| Applied Biosystems (ABI) GeneAm PCR System 2700 | Applied Biosystems | ||
| High Pure RNA Isolation Kit | Roche | 11828665001 | |
| Reverse transcription system kit | Promega | A3500 | |
| Recombinant Taq DNA Polymerase | TAKARA | R001A | |
| Primers (2μl) | Sigma | ||
| Ultrapure Agarose | Invitrogen | 16500-500 | |
| 100 bp ladder | Invitrogen | 15628-019 | |
| Quantity One 4.5.2 (Gel Doc 2000) | Biorad | 170-8100 | |
| QIAquick PCR purification kit | QIAGEN | 28106 | |
| BigDye Terminator v3.1 cycle sequencing kit | Applied Biosystems | 4337455 | |
| 0.1 ml reaction plate (MicroAMP Optical 96-well) | Applied Biosystems | 4346906 | |
| Genetic analyser ABI300 | Applied Biosystems | 4346906 | |
| DH5α competent cells (E. coli) | Invitrogen | 18263-012 | |
| pFUSEss-CHIg-hG1 (4493 bp) | Invivogen | pfusess-hchg1 | |
| pFUSEss-CHIg-hG4 (4484 bp) | Invivogen | pfusess-hchg4 | |
| pFUSE2ss-CLIg-hk (3875 bp) | Invivogen | pfuse2ss-hclk | |
| pFUSE2ss-CLIg-hl2 (3883 bp) | Invivogen | pfuse2ss-hcll2 | |
| SOC medium | Invitrogen | 15544-034 | |
| LB-based agar medium supplemented with Zeocin (Fast-Media Zeo Agar) | Invivogen | fas-zn-s | |
| Terrific Broth (TB)-based liquid medium supplemented with Zeocin (Fast-Media Zeo TB) | Invivogen | fas-zn-l | |
| DNA Miniprep kit | Omega Bio Technology | D6942-02 | |
| Nanodrop (ND1000 Spectrophotometer) | Nanodrop | ||
| LB-based agar medium supplemented with Blasticidin (Fast-Media Blast Agar) | Invivogen | fas-bl-s | |
| Terrific Broth (TB)-based liquid medium supplemented with Blasticidin (Fast-Media Blast TB) | Invivogen | fas-bl-l | |
| EcoRI | New England Biolabs | R0101S | 20,000 U/ml, in 10x NEBuffer EcoRI |
| NheI | New England Biolabs | R0131S | 10,000 U/ml, in 10x NEBuffer 2.1 |
| 2-Log DNA ladder | New England Biolabs | N3200S | 0.1-10.0 kb, 1,000 μg/ml |
| XmaI | New England Biolabs | R0180S | 10,000 U/ml, in 10x CutSmart Buffer |
| BsiWI | New England Biolabs | R0553S | 10,000 U/ml, in 10x NEBuffer 3.1 |
| AvrII | New England Biolabs | R0174S | 5,000 U/ml, in 10x CutSmart Buffer |
| FastAP Thermosensitive Alkaline Phosphatase | Thermo Scientific | EF0651 | 1 U/µL, in 10x FastAP Buffer |
| DH5α competent cells | Invitrogen | 18263-012 | |
| PE Mouse Anti-Human IgG | BD Pharmingen | 555787 | |
| anti-CD22, PerCP-Cy5.5, Clone: HIB22 | Fisher scientific | BDB563942 | |
| QIAprep Spin Miniprep Kit | QIAGEN | 27106 | |
| BigDye Terminator v3.1 | Applied Biosystems | 4337455 |
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Cite This Article
Generating Recombinant Monoclonal Antibodies From Mammalian Cell Cultures. J. Vis. Exp. (Pending Publication), e22086, doi: (2024).