Amorphous aggregate adducts of linker histone H1 turn highly immunologic in the cancers of oesophagus, stomach, gall bladder and ovary

Mir, A.R. and Moinuddin, . and Habib, S. (2017) Amorphous aggregate adducts of linker histone H1 turn highly immunologic in the cancers of oesophagus, stomach, gall bladder and ovary. International Journal of Biological Macromolecules, 96. pp. 507-517. ISSN 1418130

Full text not available from this repository.

Abstract

Hyperglycaemic influence on carcinogenesis and tumour progression is emerging as a link between diabetes and cancer. This work establishes the disturbed structural integrity of nucleosomal linker histone H1 by methyglyoxal (MG) and then correlates the role of modified H1 in the auto-immunopathogenesis of multiple cancers. MG modification caused a loss of free ε-amino groups in H1 and raised its β-sheet structural component with a consequence of non amyloid aggregation. It changed the folding-unfolding denaturation pattern of H1 and attached itself to the lysine residues of the protein eventually making up Nε-(carboxyethyl) lysine. The structural variations act as extra antigenic determinants on H1 that yield aggressive antibody response, when immunised in rabbits. The ELISA tests proved the immunoglobulin response very specific and gel based studies established the preferential binding of antibodies generated against MG-H1 with the modified protein. Cross reaction analysis inferred the multiple specific natures of immunoglobulins with binding tendencies against different inhibitors. The immunoglobulin content in blood sera derived from human subjects with tumours of oesophagus, stomach, gall bladder and ovary confirmed the antibody presence against MG-H1 and competitive ELISA showed their high specificity. This may suggest a link between nucleosomal linker H1, hyperglycaemia, glycoxidation and cancer.

Item Type: Article
Uncontrolled Keywords: Cancer; Circulating auto antibodies; Histone glycoxidation
Divisions: Faculties > Faculty of Life Sciences > Department of Biochemistry
Depositing User: AMU Library
Date Deposited: 24 Jan 2018 09:52
Last Modified: 24 Jan 2018 09:52
URI: http://ir.amu.ac.in/id/eprint/10933

Actions (login required)

View Item View Item