The “6B” Strategy: Build Back a Better Blood–Brain Barrier

Under pathological conditions such as multiple sclerosis (MS), leukocytes infiltrate the central nervous system where they, in concert with activated microglia, promote inflammatory demyelination resulting in a broad spectrum of symptoms, including paralysis. Therefore, all current therapeutic appro...

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Main Authors: Laurent Calvier, Anna E. Alexander, Joachim Herz
Format: Article
Language:English
Published: MDPI AG 2022-09-01
Series:Immuno
Subjects:
Online Access:https://www.mdpi.com/2673-5601/2/3/32
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author Laurent Calvier
Anna E. Alexander
Joachim Herz
author_facet Laurent Calvier
Anna E. Alexander
Joachim Herz
author_sort Laurent Calvier
collection DOAJ
description Under pathological conditions such as multiple sclerosis (MS), leukocytes infiltrate the central nervous system where they, in concert with activated microglia, promote inflammatory demyelination resulting in a broad spectrum of symptoms, including paralysis. Therefore, all current therapeutic approaches to MS target the immune system, blocking inflammation and paralysis progression, but may compromise the immune system. In this focused review, we present an underestimated compartment, the blood–brain barrier, which is compromised during MS and becomes permeable to leukocytes infiltrating the central nervous system. This barrier has the potential to offer new therapeutic strategies and is easily accessible for drugs. We highlight this paradigm using the example of the therapeutic anti-Reelin strategy we have developed. Reelin is a plasma protein that regulates the expression of adhesion markers on the endothelial surface, thus promoting the infiltration of inflammatory cells and propagating inflammation. Building Back a Better Blood–Brain Barrier (the “6B” strategy) may have advantages compared to actual immunosuppressive drugs because it restores a physiological function rather than suppressing the immune system.
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spelling doaj.art-5b6848f445cb44ebb90e752cd7cbe8692023-11-23T16:52:34ZengMDPI AGImmuno2673-56012022-09-012350651110.3390/immuno2030032The “6B” Strategy: Build Back a Better Blood–Brain BarrierLaurent Calvier0Anna E. Alexander1Joachim Herz2Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USADepartment of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USADepartment of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas, TX 75390, USAUnder pathological conditions such as multiple sclerosis (MS), leukocytes infiltrate the central nervous system where they, in concert with activated microglia, promote inflammatory demyelination resulting in a broad spectrum of symptoms, including paralysis. Therefore, all current therapeutic approaches to MS target the immune system, blocking inflammation and paralysis progression, but may compromise the immune system. In this focused review, we present an underestimated compartment, the blood–brain barrier, which is compromised during MS and becomes permeable to leukocytes infiltrating the central nervous system. This barrier has the potential to offer new therapeutic strategies and is easily accessible for drugs. We highlight this paradigm using the example of the therapeutic anti-Reelin strategy we have developed. Reelin is a plasma protein that regulates the expression of adhesion markers on the endothelial surface, thus promoting the infiltration of inflammatory cells and propagating inflammation. Building Back a Better Blood–Brain Barrier (the “6B” strategy) may have advantages compared to actual immunosuppressive drugs because it restores a physiological function rather than suppressing the immune system.https://www.mdpi.com/2673-5601/2/3/32multiple sclerosisEAEblood-brain barrierendotheliumendothelial cellleukocyte
spellingShingle Laurent Calvier
Anna E. Alexander
Joachim Herz
The “6B” Strategy: Build Back a Better Blood–Brain Barrier
Immuno
multiple sclerosis
EAE
blood-brain barrier
endothelium
endothelial cell
leukocyte
title The “6B” Strategy: Build Back a Better Blood–Brain Barrier
title_full The “6B” Strategy: Build Back a Better Blood–Brain Barrier
title_fullStr The “6B” Strategy: Build Back a Better Blood–Brain Barrier
title_full_unstemmed The “6B” Strategy: Build Back a Better Blood–Brain Barrier
title_short The “6B” Strategy: Build Back a Better Blood–Brain Barrier
title_sort 6b strategy build back a better blood brain barrier
topic multiple sclerosis
EAE
blood-brain barrier
endothelium
endothelial cell
leukocyte
url https://www.mdpi.com/2673-5601/2/3/32
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