title: Proteomic analysis of human cerebral endothelial cells activated by multiple sclerosis serum and IFNbeta-1b.
abstract: Several groups have recently described the endothelial cell (EC) as an important target of pathological mediators in multiple sclerosis (MS). Despite the recognition of the EC as a significant target in MS and a possible beneficiary of Beta-interferon therapy, the structural changes which occur in the cerebrovascular endothelium and the effects of interferon-beta 1b on these changes have not been closely evaluated. Disruption or dysregulation of the blood brain barrier (BBB) in MS represents a loss of endothelial integrity, which may facilitate the transendothelial migration of activated leukocytes responsible for the development of demyelinating lesions of MS. We used proteomics (2-dimensional gel electrophoresis and MALDI-MS) to characterize the effects of serum from MS patients with active disease (with and without interferon-beta 1b therapy) on human cerebral endothelial cells. The results of this study revealed the up- and down-regulation of expression of several proteins related to blood vessel development, cell structure, and cell cycle control. Using this approach we have identified protein 14-3-3, metavinculin, myosin-9, plasminogen, reticulocalbin-2 and-3, ribonuclease/angiogenin inhibitor 1, annexin A1, tropomyosin and Ras-related protein Rap-1A as potential new markers of active MS disease. A more complete description of cerebrovascular endothelial biomarkers and mediators in MS pathogenesis and how they are regulated by inflammatory cytokines and beta-interferons may lead to the development of more effective therapies and more accurate diagnostic markers in MS.
authors.affiliation: Department of Molecular and Cellular Physiology, LSUHSC-S, Shreveport, LA 71130, USA.
authors.forename: J Steven
authors.initials: JS
authors.lastname: Alexander
authors.forename: Alireza
authors.initials: A
authors.lastname: Minagar
authors.forename: Michael
authors.initials: M
authors.lastname: Harper
authors.forename: Sherry
authors.initials: S
authors.lastname: Robinson-Jackson
authors.forename: Merilyn
authors.initials: M
authors.lastname: Jennings
authors.forename: Stacy J
authors.initials: SJ
authors.lastname: Smith
mesh_terms: D015180:Electrophoresis, Gel, Two-Dimensional; D004730:Endothelium, Vascular / Q000187:drug effects / Q000503:physiopathology*; D006801:Humans; D000068576:Interferon beta-1b; D016899:Interferon-beta / Q000494:pharmacology*; D008970:Molecular Weight; D009103:Multiple Sclerosis / Q000097:blood / Q000235:genetics* / Q000473:pathology; D009419:Nerve Tissue Proteins / Q000235:genetics* / Q000302:isolation & purification; D010449:Peptide Mapping; D020543:Proteome; D011994:Recombinant Proteins / Q000494:pharmacology; D012016:Reference Values
chemical_list: D009419:Nerve Tissue Proteins; D020543:Proteome; D011994:Recombinant Proteins; D000068576:Interferon beta-1b; D016899:Interferon-beta