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Updated: Jun 27, 2025

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A potassium-chloride co-transporter with altered genome architecture functions as a suppressor in glioma

Hongwei Liu1,2, Zhouyang Pan1,2, Xuelei Lin1,2

  • 1Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China.

Journal of Cellular and Molecular Medicine
|April 30, 2024
PubMed

Insights

This study identifies the potassium-chloride transporter SLC12A5 as a potential suppressor of glioma progression. Lower SLC12A5 levels correlate with poor prognosis, while its overexpression inhibits tumor cell growth and migration.

Area of Science:

  • Neuro-oncology
  • Molecular Biology
  • Genomics

Background:

  • Gliomas are aggressive brain tumors with poor outcomes despite standard treatments.
  • Tumor heterogeneity and complex regulatory mechanisms limit current therapeutic efficacy.
  • Identifying novel molecular targets is crucial for improving glioma treatment.

Purpose of the Study:

  • To investigate the role of the potassium-chloride transporter SLC12A5 in glioma.
  • To characterize SLC12A5's association with glioma pathology, prognosis, and molecular features.
  • To evaluate SLC12A5's functional impact on glioma cell behavior and immune response.

Main Methods:

  • Analysis of Hi-C data to identify SLC12A5 in disrupted topologically associating domains.
  • Validation across multiple independent glioma cohorts.
  • Functional studies using SLC12A5-overexpressing cell lines.
  • Correlation analysis with genomic alterations, transcriptional landscape, and immune signatures.

Main Results:

  • SLC12A5 was found to be downregulated in glioma tissues.
  • Downregulation of SLC12A5 significantly correlated with pathological features, poor prognosis, and specific genomic alterations.
  • Overexpression of SLC12A5 suppressed glioma cell proliferation and migration in vitro.
  • SLC12A5 expression was positively associated with GABAergic activity and negatively with pro-tumorigenic immune signatures.

Conclusions:

  • SLC12A5 is a potential tumor suppressor in glioma.
  • SLC12A5's downregulation is linked to aggressive disease characteristics and poor immunotherapy response.
  • SLC12A5 represents a promising therapeutic target for glioma treatment.
Keywords:
GABAgliomaimmunotherapymicroenvironmenttopologically associating domain

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