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© Pierre Lafaye
Astrocytes marqués par des anticorps VHH anti-GFAP. Des anticorps d'alpagas dirigés contre une protéine spécifique des astrocytes, la GFAP (Glial Fibrillary Acidic Protein), ont été obtenus à partir de camélidés immunisés. La partie VHH (partie de l'anticorps qui reconnaît l'antigène) a été exprimée sous forme recombinante chez Escherichia coli.
Publication : Medecine sciences : M/S

[New formats for improving brain drug delivery of antibodies: the blood-brain barrier case].

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Medecine sciences : M/S - 01 Dec 2019

Lafaye P, Lesuisse D, Declèves X,

Link to Pubmed [PMID] – 31903924

Link to DOI – 10.1051/medsci/2019223

Med Sci (Paris) 2019 Dec; 35(12): 1106-1112

Many neurodegenerative or tumor brain pathologies should be able to benefit from the impressive medicinal advances that represent therapeutic antibodies. Unfortunately, many failures have been observed with antibodies whose targets are in the brain parenchyma due to their very low brain distribution. The blood-brain barrier (BBB) that exhibits extremely selective and restrictive properties is responsible for the low brain penetration of high-molecular mass molecules including therapeutic antibodies. The objective of this article is to present the properties of the BBB and the latest advances in the engineering of new antibody formats to possibly improve their brain distribution.Améliorer le ciblage tissulaire des anticorps thérapeutiques par de nouveaux formats – L’exemple de la barrière hémato-encéphalique.De nombreuses pathologies cérébrales neurodégénératives ou tumorales devraient pourvoir bénéficier des progrès thérapeutiques impressionnants des anticorps médicaments. Malheureusement, en raison de leur très faible passage dans le cerveau, de nombreux développements cliniques d’anticorps dont la cible thérapeutique se situe dans le parenchyme cérébral ont été arrêtés par manque d’efficacité. La barrière hémato-encéphalique (BHE), douée de propriétés extrêmement sélectives et restrictives, est à l’origine de la faible pénétration cérébrale des molécules de haute masse moléculaire, telles que les anticorps thérapeutiques. L’objectif de cette revue est de présenter les propriétés de la BHE et les dernières avancées dans le domaine de l’ingénierie de nouveaux formats d’anticorps susceptibles d’améliorer leur passage intracérébral.