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ZBTB7A acts as a tumor suppressor through the transcriptional repression of glycolysis

Xue-Song Liu1, Jenna E Haines1, Elie K Mehanna1

  • 1Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, Massachusetts 02115, USA;

Genes & Development
|September 4, 2014
PubMed

Insights

The transcription repressor ZBTB7A suppresses glycolysis by regulating key genes. Loss of ZBTB7A in tumors accelerates progression but increases sensitivity to glycolysis inhibitors, revealing its tumor suppressor role.

Area of Science:

  • Molecular Biology
  • Cancer Metabolism
  • Transcriptional Regulation

Background:

  • Elevated glycolysis is a hallmark of cancer, yet the regulatory mechanisms driving this metabolic shift are not fully understood.
  • Understanding the factors controlling cancer glycolysis is crucial for developing targeted therapies.

Purpose of the Study:

  • To identify novel regulators of glycolysis in cancer.
  • To investigate the role of ZBTB7A in cancer metabolism and tumor progression.

Main Methods:

  • Analysis of The Cancer Genome Atlas (TCGA) data sets.
  • Investigated the direct binding of ZBTB7A to glycolytic gene promoters.
  • Assessed the correlation between ZBTB7A expression, glycolytic gene levels, and patient survival.

Main Results:

  • ZBTB7A directly represses the transcription of key glycolytic genes (GLUT3, PFKP, PKM).
  • The ZBTB7A locus is frequently deleted in human tumors, and reduced ZBTB7A expression correlates with increased glycolytic gene expression and poor survival in colon cancer.
  • ZBTB7A-deficient tumors show rapid progression and heightened sensitivity to glycolysis inhibition.

Conclusions:

  • ZBTB7A acts as a novel transcriptional repressor that suppresses glycolysis.
  • ZBTB7A functions as a tumor suppressor by directly inhibiting glycolysis, and its loss has therapeutic implications for glycolysis-targeted cancer treatments.
Keywords:
GLUT3PFKPPKMZBTB7Aglycolysistumor suppressor

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