Merck
  • Home
  • Search Results
  • Conservation of oncofetal antigens on human embryonic stem cells enables discovery of monoclonal antibodies against cancer.

Conservation of oncofetal antigens on human embryonic stem cells enables discovery of monoclonal antibodies against cancer.

Scientific reports (2018-08-04)
Heng Liang Tan, Charlene Yong, Bao Zhu Tan, Wey Jia Fong, Jayanthi Padmanabhan, Angela Chin, Vanessa Ding, Ally Lau, Lu Zheng, Xuezhi Bi, Yuansheng Yang, Andre Choo
ABSTRACT

Monoclonal antibodies (mAbs) are used as targeted therapies against cancers. These mAbs kill cancer cells via various mechanisms of actions. In this study, human embryonic stem cells (hESCs) was used as the immunogen to generate a panel of antibodies. From this panel of mAbs, A19 was found to bind both hESC and various cancer cell lines. The antigen target of A19 was identified as Erbb-2 and glycan analysis showed that A19 binds to a N-glycan epitope on the antigen. A19 was elucidated to internalize into cancer cells following binding to Erbb-2 and hence developed as an antibody-drug conjugate (ADC). Using ADC as the mechanism of action, A19 was able to kill cancer cells in vitro and delayed the onset of tumour formation in mice xenograft model. When compared to Herceptin, A19 binds to different isoforms of Erbb-2 and does not compete with Herceptin for the same epitope. Hence, A19 has the potential to be developed as an alternative targeted therapeutic agent for cancers expressing Erbb-2.

MATERIALS
Product Number
Brand
Product Description

Supelco
Discovery® Glycan SPE Tube, bed wt. 50 mg, volume size 1 mL, pk of 108
Roche
IsoStrip Mouse Monoclonal Antibody Isotyping Kit, sufficient for 10 tests
Supelco
Discovery® Glycan SPE Tube, 5 g, volume 60 mL, pk of 16
Supelco
Discovery® Glycan SPE Tube, bed wt. 250 mg, volume 3 mL, pk of 54
Supelco
Discovery® Glycan SPE Tube, bed wt. 250 mg, volume 6 mL, pk of 30
Supelco
Discovery® Glycan SPE Tube, bed wt. 500 mg, volume 6 mL, pk of 30
Supelco
Discovery® Glycan SPE Tube, bed wt. 1 g, volume 12 mL, pk of 20
Supelco
Discovery® Glycan SPE Tube, bed wt. 2 g, volume 20 mL, pk of 20
Supelco
Discovery® Glycan SPE Bulk Packing, pkg of 50 g
Sigma-Aldrich
MISSION® esiRNA, targeting human ERBB2