Chemistry:CBR96-doxorubicin immunoconjugate

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CBR96-doxorubicin immunoconjugate
Monoclonal antibody
Type?
SourceHumanized (from mouse)
TargetLewis-Y antigen
Clinical data
Other namesSGN-15, BMS-182248
ATC code
  • none
Identifiers
CAS Number
ChemSpider
  • none

cBR96-doxorubicin immunoconjugate (BMS-182248/SGN-15; also known as cBR96-Dox) is an antibody-drug conjugate or (ADC) directed to the Lewis-Y antigen designed for the treatment of cancer. The payload is the chemotherapy drug doxorubicin which is connected with a hydrazone linker to cysteine residues of the Lewis-Y specific (chimeric) monoclonal antibody BR96.[1] Following internalization, the hydrazone is hydrolyzed within the acidic environment of target cell endosomes and lysosomes to release active cytotoxic drug.

Clinical Development

In clinical trials cBR96-Dox was found to be highly active in regressing large human tumor xenografts implanted in mice or rats.[2][3] Multiple tumor models including lung, breast and colon were evaluated, and cBR96-Dox was found to have broad and potent anti-tumor activity, even in doxorubicin-resistant tumors.

References

  1. "Harnessing The Power of Three: Advancing Antibody-drug Conjugates from Laboratory to Bedside". ADC Review / Journal of Antibody-drug Conjugates 1. 2013. doi:10.14229/jadc.2013.6.1.001. http://adcreview.com/articles/doi-10-14229jadc-2013-6-1-001/. 
  2. "Cure of xenografted human carcinomas by BR96-doxorubicin immunoconjugates". Science 261 (5118): 212–5. July 1993. doi:10.1126/science.8327892. PMID 8327892. Bibcode1993Sci...261..212T. 
  3. "Antitumor activity of carcinoma-reactive BR96-doxorubicin conjugate against human carcinomas in athymic mice and rats and syngeneic rat carcinomas in immunocompetent rats". Cancer Research 57 (20): 4530–6. October 1997. PMID 9377565.