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Enhanced Antigen Detection in Immunohistochemical Staining Using a 'Digitized' Chimeric Antibody

Enhanced Antigen Detection in Immunohistochemical Staining Using a 'Digitized' Chimeric Antibody

Hui-Yan Eng, Cheng-I Wang, Yuezhen Xue, Chia-Yin Lee, Sarah Binte Zulkifli, Poh-Cheang Chiam, Farid J Ghadessy, David P Lane

Protein Eng Des Sel. 2016 Jan;29(1):11-21.

PMID: 26508747

Abstract:

The immunohistochemical (IHC) staining of mouse tissue sections using antibodies of mouse origin can result in high nonspecific background due to the staining of endogenous immunoglobulins (Igs) by enzyme-conjugated secondary antibodies. In order to obviate this issue, we developed a chimeric mouse-human anti-p53 monoclonal antibody (MH242) by grafting the variable regions of a known mouse antibody into a human Ig scaffold. This facilitated use of an anti-human secondary antibody, and resulted in near-zero background when compared with its parental mouse monoclonal antibody (PAb242). Furthermore, the chimeric antibody enabled reproducible detection of mutant p53 (homozygous R172H) expression in mouse tissue, an observation hitherto largely equivocal based on the use of existing antibodies. The approach we describe leads to the generation of tractable antibody reagents, whose integrity can be readily verified through DNA sequencing of expressor plasmids. The wide-spread adoption of such 'digitized' antibodies should reduce experimental disparities that can commonly arise through variations in antibody quality.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42412727	Anti-p53 antibody, Mouse monoclonal			Price

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