Human Anti-MICA Recombinant Antibody (TAB-0799CL)

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Citations

1. Gravina, Alessia, et al. "Protection of cell therapeutics from antibody-mediated killing by CD64 overexpression." Nature biotechnology 41.5 (2023): 717-727. https://doi.org/s41587-022-01540-7
   The study investigates the protection of cell therapeutics from antibody-mediated killing through the overexpression of CD64. This approach enhances the survival and efficacy of allogeneic cell therapeutics used in cancer therapy and regenerative medicine. The research demonstrates that engineered cells overexpressing CD64 can effectively evade antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC), which are primary mechanisms of antibody-mediated rejection.
   At Creative Biolabs, we provided several essential reagents for this research. These included the humanized anti-MICA IgG1 antibody (Cat#: TAB-0799CL), the humanized anti-CD52 IgG1 antibody (Cat#: FAMAB-0089WJ), the humanized anti-CD52 IgG1 antibody (Cat#: FAMAB-0014JF), and the hypusine antibody (Cat#: HPAB-0440-YJ). Our products were crucial for the experiments involving antibody-mediated killing assays, enabling the detailed examination of how engineered cells can evade immune detection and destruction. This study highlights the potential of CD64 overexpression to enhance the viability of cell-based therapies, underscoring our commitment to supporting advanced research and innovative therapeutic solutions.
2. Gravina, Alessia, et al. "Synthetic immune checkpoint engagers protect HLA-deficient iPSCs and derivatives from innate immune cell cytotoxicity." Cell Stem Cell 30.11 (2023): 1538-1548. https://doi.org/10.1016/j.stem.2023.10.003
   This research introduces a novel approach to protecting cell therapeutics from immune rejection through synthetic immune checkpoint engagers. The scientists designed agonistic cell surface molecules that activate inhibitory receptors on immune cells, preventing them from attacking transplanted cells. These engineered molecules target different immune checkpoint pathways including TIM3 and SIRPα on natural killer cells and macrophages. By combining the SIRPα engager with truncated CD64, they created fully immune-evasive cells that escape both cellular rejection and antibody-mediated attacks. The researchers demonstrated that these engineered cells survived in stringent in vitro and in vivo models, showing complete protection against all allogeneic immune responses including antibody-dependent cellular cytotoxicity and complement-dependent cytotoxicity.
   Creative Biolabs provided both humanized anti-MICA IgG1 antibodies (CAT# TAB-0799CL) and humanized anti-SSEA-4 IgG1 antibodies (CAT# HPAB-N0258-YC). These antibodies were essential for testing the protective capabilities of the engineered cells against different forms of antibody-mediated killing. The anti-MICA antibodies were used in the main NK cell-mediated ADCC experiments, while the anti-SSEA-4 antibodies were used to evaluate CDC and ADCC protection in the B2M-KO iPSCs. These well-characterized humanized antibodies enabled comprehensive evaluation of the immune evasion strategy, demonstrating that cells expressing both the SIRPα engager and truncated CD64 provide protection against multiple immune attack mechanisms, which is critical for advancing allogeneic cell therapeutics toward clinical applications.

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(Creative Biolabs Cat# TAB-0799CL, RRID: AB_3111796)

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Product Notes

This is a product of Creative Biolabs' Hi-Affi™ recombinant antibody portfolio, which has several benefits including:

• Increased sensitivity
• Confirmed specificity
• High repeatability
• Excellent batch-to-batch consistency
• Sustainable supply
• Animal-free production

See more details about Hi-Affi™ recombinant antibody benefits.

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