Role and mechanisms of m6A demethylases in digestive system tumors

  • 0College of Bioengineering, Key Laboratory of Biorheological Science and Technology, Ministry of Education, Chongqing University Chongqing 400030, China.

|

|

Summary

This summary is machine-generated.

N6-methyladenosine (m6A) demethylases regulate key cancer processes in digestive tumors. Targeting these enzymes offers promising new therapeutic strategies for improving patient outcomes.

Area Of Science

  • Oncology
  • Molecular Biology
  • Epigenetics

Background

  • Digestive system tumors are common and deadly malignancies requiring further research into their development.
  • N6-methyladenosine (m6A) is a prevalent RNA modification influencing gene expression and metabolism.
  • m6A demethylases, part of the AlkB family, are crucial for regulating m6A levels.

Purpose Of The Study

  • To review the functions and molecular mechanisms of m6A demethylases in digestive system tumors.
  • To summarize their roles in cancer hallmarks like proliferation, apoptosis, migration, and invasion.
  • To explore their involvement in angiogenesis, treatment resistance, and the tumor immune microenvironment (TIME).

Main Methods

  • Comprehensive literature review of recent findings on m6A demethylases in digestive cancers.
  • Analysis of molecular mechanisms underlying m6A demethylase functions.
  • Synthesis of evidence regarding their impact on various aspects of tumor biology.

Main Results

  • Abnormal m6A levels, driven by m6A demethylases, significantly impact cancer development.
  • These enzymes regulate critical processes including cell proliferation, apoptosis, migration, invasion, and metastasis.
  • m6A demethylases influence angiogenesis, chemo/radiotherapy resistance, and the tumor immune microenvironment.

Conclusions

  • m6A demethylases are key players in the pathogenesis of digestive system tumors.
  • Understanding their roles provides insights into cancer development and progression.
  • Targeting m6A demethylases presents a potential therapeutic avenue for digestive cancer treatment.

Related Concept Videos

Abnormal Proliferation 02:23

4.4K

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...

Phase II Reactions: Methylation Reactions 01:17

102

Methylation is a phase II biotransformation process involving the attachment of a methyl group to a substrate. Enzymes known as methyltransferases orchestrate this reaction.
The mechanism of methylation unfolds in two stages. The first stage sees a methyltransferase enzyme facilitating the transfer of a methyl group from S-adenosylmethionine (SAM) to the substrate, forming S-adenosylhomocysteine (SAH). The second stage involves further metabolism of SAH into homocysteine, which can be recycled...

Loss of Tumor Suppressor Gene Functions 01:12

4.7K

Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...

Epigenetic Regulation 01:37

3.0K

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...

mTOR Signaling and Cancer Progression 03:03

3.7K

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...

The Tumor Microenvironment 02:17

6.5K

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...