Repositioning Candidate Details

Candidate ID: R0031
Source ID: DB00108
Source Type: approved; investigational
Compound Type: biotech
Compound Name: Natalizumab
Synonyms: Anti-alpha4 integrin; Anti-VLA4; Natalizumab
Molecular Formula: --
SMILES: --
DrugBank Description: Humanized IgG4k monoclonal antibody produced in murine myeloma cells. Natalizumab contains human framework regions and the complementarity-determining regions of a murine antibody that binds to a4-integrin. Natalizumab was voluntarily withdrawn from U.S. market because of risk of Progressive multifocal leukoencephalopathy (PML). It was returned to market July, 2006.
CAS Number: 189261-10-7
Molecular Weight:
DrugBank Indication: For treatment of multiple sclerosis.
DrugBank Pharmacology: In multiple sclerosis, lesions are believed to occur when activated inflammatory cells, including T-lymphocytes, cross the blood-brain barrier (BBB). Leukocyte migration across the BBB involves interaction between adhesion molecules on inflammatory cells, and their counter-receptors present on endothelial cells of the vessel wall. The clinical effect of natalizumab in multiple sclerosis may be a secondary result of its blockade of the molecular interaction of a 4b 1-integrin expressed by inflammatory cells with VCAM-1 on vascular endothelial cells, and with CS-1 and/or osteopontin expressed by parenchymal cells in the brain. α4-integrin is required for white blood cells to move into organs, therefore, natalizumab prevents these immune cells from crossing blood vessel walls to reach affected organs thereby decreasing inflamation.
DrugBank MoA: Binds to the α4-subunit of α4b 1 and α4b 7 integrins expressed on the surface of all leukocytes except neutrophils, and inhibits the α4-mediated adhesion of leukocytes to their counter-receptor(s).
Targets: Integrin alpha-4 antibody; Low affinity immunoglobulin gamma Fc region receptor III-B; Intercellular adhesion molecule 1; High affinity immunoglobulin gamma Fc receptor I
Inclusion Criteria: Therapeutic strategy associated