AI Article Synopsis
- Aberrant accumulation of chondroitin sulfate (CS) in glioblastoma (GBM) is linked to tumor progression, yet the role of excessive CS and its potential as a drug target remains unclear.
- The study investigates the biological functions of CHST11, which is found to be overexpressed in GBM tissue, enhancing cell mobility and contributing to aggressive behaviors in GBM cells.
- Treatment with a C4S-specific binding peptide (C4Sp) shows promise in reducing GBM cell invasiveness and improving survival rates in mice models, suggesting a new approach to targeting abnormal CS in GBM therapy.
Article Abstract
Aberrant chondroitin sulfate (CS) accumulation in glioblastoma (GBM) tissue has been documented, but the role of excessive CS in GBM progression and whether it can be a druggable target are largely unknown. The aim of this study is to clarify the biological functions of CHST11 in GBM cells, and evaluate therapeutic effects of blocking CHST11-derived chondroitin 4-sulfate (C4S). We investigated the expression of CHST11 in glioma tissue by immunohistochemistry, and analyzed CHST11 associated genes using public RNA sequencing datasets. The effects of CHST11 on aggressive cell behaviors have been studied and . We demonstrated that CHST11 is frequently overexpressed in GBM tissue, promoting GBM cell mobility and modulating C4S on GBM cells. We further discovered that CSPG4 is positively correlated with CHST11, and CSPG4 involved in CHST11-mediated cell invasiveness. In addition, GBM patients with high expression of CHST11 and CSPG4 have a significantly shorter survival time. We examined the effects of treating C4S-specific binding peptide (C4Sp) as a therapeutic agent and . C4Sp treatment attenuated GBM cell invasiveness and, notably, improved survival rate of orthotopic glioma cell transplant mice. Our results propose a possible mechanism of CHST11 in regulating GBM malignancy and highlight a novel strategy for targeting aberrant chondroitin sulfate in GBM cells.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10408464 | PMC |
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