Anti-myeloma activity of the CXCR4 antagonist WZ811.

ABSTRACT: The CXCR4-CXCL12 axis is crucial for the interaction between malignant plasma cells (PC) and their microenvironment in multiple myeloma (MM). Here, we show that CXCR4 expression is upregulated in MM cell lines and PCs during both premalignant and active stages of MM, compared to normal PCs from healthy donors. The CXCR4 antagonist WZ811 reduced the viability of MM PCs and cell lines, while tumor microenvironment cells from both MM patients and healthy donors exhibited significant resistance. In vivo, WZ811 significantly reduced tumor burden and improved survival. WZ811-mediated MM cell death involved disruption of mitochondrial transmembrane potential, externalization of transmembrane phosphatidylserine, activation of caspases, increased levels of autophagic proteins, and an increase in G<

SUBMITTER: Cholujova D 

PROVIDER: S-EPMC12913330 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature