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CD99 Antibody Disrupts T-cell Acute Lymphoblastic Leukemia Adhesion to Meningeal Cells and Attenuates Chemoresistance

Overview
Journal Sci Rep
Specialty Science
Date 2021 Dec 22
PMID 34934147
Citations 4
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Abstract

Central nervous system (CNS) relapse is a significant cause of treatment failure among patients with acute lymphoblastic leukemia. In prior work we found that the meninges, the thin layer of tissue that covers the brain and spinal cord, harbor leukemia cells in the CNS. Importantly, direct interactions between leukemia and meningeal cells enabled leukemia chemoresistance. Herein, we show that an antibody targeting CD99, a transmembrane protein expressed on meningeal cells and many leukemia cells, disrupts adhesion between leukemia and meningeal cells and restores sensitivity of the leukemia cells to chemotherapy. This work identifies a mechanism regulating critical intercellular interactions within the CNS leukemia niche and may lead to novel therapeutic approaches for overcoming niche-mediated chemoresistance.

Citing Articles

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PMID: 38804310 PMC: 11130895. DOI: 10.3390/antib13020042.


CD99 tumor associated antigen is a potential target for antibody therapy of T-cell acute lymphoblastic leukemia.

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Tissue Inhibitor of Metalloproteinases-1 Overexpression Mediates Chemoresistance in Triple-Negative Breast Cancer Cells.

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CXCR4 antagonists disrupt leukaemia-meningeal cell adhesion and attenuate chemoresistance.

Jonart L, Ostergaard J, Brooks A, Fitzpatrick G, Chen L, Gordon P Br J Haematol. 2022; 201(3):459-469.

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