Anti-Human CTLA-4 Reference Antibody (GIGA-564, RUO) (HB651186)

Name: Anti-Human CTLA-4 Reference Antibody (GIGA-564, RUO)
Brand: abinScience
SKU: HB651186
Price: 370 USD
Availability: InStock

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Catalog No.	HB651186
Species reactivity	Human
Applications	ELISA, Bioactivity: FACS, Functional assay, Research in vivo
Host species	Human
Isotype	IgG
Clone ID	GIGA-564
Biological activity	GIGA-564 (0.001-100 ug/mL) exhibits extremely low activity in blocking the binding of CTLA-4 to CD80 and CD86 in ELISA assays [1]. GIGA-564 (5 mg/kg; i.p.; once every 3 days; 3 doses) induces a lower level of peripheral Treg proliferation than Ipilimumab () in hCTLA-4 KI mice bearing MC38 tumors [1]. GIGA-564 (0.3 mg/kg; i.p.; once every 3 days; 3 doses) exhibits excellent anti-tumor activity in hCTLA-4 KI mice bearing MC38 tumors [1]. GIGA-564 (30 mg/kg; i.p.; once every 3 days; 9 doses) induces less toxicity than Ipilimumab () in hCTLA-4 knock-in (KI) and hCTLA-4/hPD-1 double knock-in (KI) mice, as evidenced by lower liver enzyme levels, reduced colitis, and the absence of skin lesions at the tested dose [1].
Expression system	Mammalian cells
Clonality	Monoclonal
Target	CD152, Cytotoxic T-lymphocyte protein 4, CTLA-4, CTLA4, Cytotoxic T-lymphocyte-associated antigen 4
Endotoxin level	Please contact the lab for this information.
Purity	>95% purity as determined by SDS-PAGE.
Purification	Protein A/G purified from cell culture supernatant.
Accession	P16410
Form	Liquid
Storage buffer	0.01M PBS pH 7.4 Please refer to the specific buffer information in the hardcopy of datasheet or the lot-specific COA.
Stability and Storage	Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8°C for frequent use. Store at -20 to -80°C for twelve months from the date of receipt.
Alternate Names	GIGA-564, GIGA564, GIGA564
Background	Cytotoxic T-lymphocyte protein 4 (CD152/CTLA4) is a ~24 kDa protein. Inhibitory receptor acting as a major negative regulator of T-cell responses. Acts as a decoy receptor: the affinity of CTLA4 for its natural B7 family ligands, CD80 and CD86, is considerably stronger than the affinity of their cognate stimulatory coreceptor CD28. CD152 is the therapeutic target of ipilimumab (Yervoy). 1. Schwartz, JC. et al. (2001) Nature 410, 604-8. PMID: 11279501 2. Stamper, CC. et al. (2001) Nature 410, 608-11. PMID: 11279502 3. Teft, WA. et al. (2006) Annual review of immunology 24, 65-97. PMID: 16551244 4. Linsley, PS. et al. (1991) The Journal of experimental medicine 174, 561-9. PMID: 1714933 5. Zheng, Y. et al. (2008) Journal of immunology (Baltimore, Md. : 1950) 181, 1683-91. PMID: 18641304 6. Ramagopal, UA. et al. (2017) Proceedings of the National Academy of Sciences of the United States of America 114, E4223-E4232. PMID: 28484017
References	1. Stone E L, et al. GIGA-564, a third generation anti-CTLA-4 with minimal ability to block CTLA-4 binding to B7 ligands, has enhanced efficacy but reduced toxicity compared to ipilimumab in pre-clinical models//JOURNAL FOR IMMUNOTHERAPY OF CANCER. BRITISH MED ASSOC HOUSE, TAVISTOCK SQUARE, LONDON WC1H 9JR, ENGLAND: BMJ PUBLISHING GROUP, 2022, 10: A1443-A1443. [HB651186]
Note	For research use only. Not suitable for clinical or therapeutic use.

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SDS-PAGE for Research Grade Anti-Human CD152/CTLA4 (GIGA-564)

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Anti-Human CTLA-4 Reference Antibody (GIGA-564, RUO).pdf

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Anti-Human CTLA-4 Reference Antibody (GIGA-564, RUO) (HB651186)

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