Crosstalk of Epigenetic and Metabolic Signaling Underpinning Glioblastoma Pathogenesis

Mariam Markouli1, Dimitrios Strepkos1, Kostas A Papavassiliou1

  • 1Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece.

Cancers
|June 10, 2022
PubMed

Insights

Epigenetic modifications regulate metabolic pathways in glioblastoma, influencing tumor growth. Targeting these epigenetic-metabolic interactions offers a promising therapeutic strategy for glioblastoma (GBM) progression.

Area of Science:

  • Oncology
  • Molecular Biology
  • Biochemistry

Background:

  • Metabolic reprogramming is a hallmark of cancer, crucial for tumor development and progression.
  • Glioblastoma (GBM) exhibits significant metabolic alterations, driving its aggressive nature.
  • The interaction between epigenetics and metabolism in GBM is a critical area for therapeutic intervention.

Purpose of the Study:

  • To review the epigenetic mechanisms regulating metabolic pathways in glioblastoma.
  • To highlight the potential of targeting these epigenetic-metabolic pathways for glioblastoma therapy.

Main Methods:

  • Literature review of studies investigating epigenetic modifications and metabolic pathways in glioblastoma.
  • Analysis of how epigenetic regulators influence key metabolic routes like glycolysis, oxidative phosphorylation, and glutamine metabolism.

Main Results:

  • Epigenetic mechanisms can both activate and inhibit major metabolic pathways in glioblastoma cells.
  • These modifications contribute to the metabolic heterogeneity and plasticity of malignant cells.
  • Specific epigenetic regulators impact glycolysis, pentose phosphate pathway, lipid, and glutamine metabolism.

Conclusions:

  • Epigenetic modifications play a complex role in regulating glioblastoma cell metabolism.
  • Targeting the interplay between epigenetics and metabolism presents a viable strategy for glioblastoma treatment.
  • Understanding these interactions can lead to novel therapeutic approaches against tumor progression.

Related Concept Videos

Interactions Between Signaling Pathways01:19

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
6.6K
Epigenetic Regulation01:37

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
3.1K
mTOR Signaling and Cancer Progression03:03

mTOR Signaling and Cancer Progression

The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
3.9K
The Tumor Microenvironment02:17

The Tumor Microenvironment

Every normal cell or tissue is embedded in a complex local environment called stroma, consisting of different cell types, a basal membrane, and blood vessels. As normal cells mutate and develop into cancer cells, their local environment also changes to allow cancer progression. The tumor microenvironment (TME) consists of a complex cellular matrix of stromal cells and the developing tumor. The cross-talk between cancer cells and surrounding stromal cells is critical to disrupt normal tissue...
6.8K
Adaptive Mechanisms in Cancer Cells02:53

Adaptive Mechanisms in Cancer Cells

Cancer cells accumulate genetic changes at an abnormally rapid rate due to the defects in the DNA repair mechanisms. From an evolutionary perspective, such genetic instability is advantageous for cancer development. Mutant cell lines accumulate a series of beneficial mutations that contribute to their progression into cancer.
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
6.0K
Cancer Stem Cells and Tumor Maintenance02:40

Cancer Stem Cells and Tumor Maintenance

Early diagnosis and treatment can often cure cancer. However, even with treatment, residual cells called cancer stem cells (CSC) might remain, often causing tumor recurrence. These cancer stem cells possess the potential for self-renewal and multi-lineage differentiation and are often responsible for the therapeutic resistance displayed in most cancers.
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
5.1K