Transfected HEK293 Cells Expressing Functional Recombinant Intercellular Adhesion Molecule 1 (ICAM-1) – A Receptor Associated with Severe Plasmodium falciparum Malaria

Bengtsson, Anja, Joergensen, Louise, Barbati, Zachary R., Craig, Alister ORCID: https://orcid.org/0000-0003-0914-6164, Hviid, Lars and Jensen, Anja T. R. (2013) 'Transfected HEK293 Cells Expressing Functional Recombinant Intercellular Adhesion Molecule 1 (ICAM-1) – A Receptor Associated with Severe Plasmodium falciparum Malaria'. PLoS ONE, Vol 8, Issue 7, e69999.

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Abstract

Intercellular adhesion molecule 1 (ICAM-1) is a membrane-bound glycoprotein expressed on endothelial cells and cells of the immune system. Human ICAM-1 mediates adhesion and migration of leucocytes, and is implicated in inflammatory pathologies, autoimmune diseases and in many cancer processes. Additionally, ICAM-1 acts as receptor for pathogens like human rhinovirus and Plasmodium falciparum malaria parasites. A group of related P. falciparum erythrocyte membrane protein 1 (PfEMP1) domains, the DBLβ, mediates ICAM-1 binding of P. falciparum-infected erythrocytes. This ICAM‑1-binding phenotype has been suggested to be involved in the development of cerebral malaria. However, more studies identifying cross-reactive antibody and ICAM-1-binding epitopes and the establishment of a clinical link between DBLβ expression and e.g. cerebral malaria are needed before the DBLβ domains can be put forward as vaccine candidates and go into clinical trials. Such studies require availability of functional recombinant ICAM-1 in large quantities. In this study, we compared recombinant ICAM-1 expressed in HEK293 and COS-7 cells with mouse myeloma NS0 ICAM-1 purchased from a commercial vendor in terms of protein purity, yield, fold, ability to bind DBLβ, and relative cost. We present a HEK293 cell-based, high-yield expression and purification scheme for producing inexpensive, functional ICAM‑1. ICAM-1 expressed in HEK293 is applicable to malaria research and can also be useful in other research fields.

Item Type:	Article
Subjects:	QU Biochemistry > Cells and Genetics > QU 350 Cellular structures QU Biochemistry > Cells and Genetics > QU 375 Cell physiology QU Biochemistry > Genetics > QU 460 Genomics. Proteomics QX Parasitology > Protozoa > QX 135 Plasmodia WC Communicable Diseases > Tropical and Parasitic Diseases > WC 750 Malaria
Faculty: Department:	Biological Sciences > Department of Tropical Disease Biology
Digital Object Identifer (DOI):	https://doi.org/10.1371/journal.pone.0069999
Depositing User:	Lynn Roberts-Maloney
Date Deposited:	13 Feb 2015 10:14
Last Modified:	17 Jul 2019 14:14
URI:	https://archive.lstmed.ac.uk/id/eprint/4898

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