Related Experiment Video
Updated: Jul 12, 2025

06:07
Continuous Fluorescence-Based Endonuclease-Coupled DNA Methylation Assay to Screen for DNA Methyltransferase Inhibitors
Published on: August 5, 2022
2.6K
Insights into DNMT1 and programmed cell death in diseases
Lan Yan1, Qi Geng1, Zhiwen Cao1
1Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China.
Biomedicine & Pharmacotherapy = Biomedecine & Pharmacotherapie
|October 23, 2023
Summary
DNA methyltransferase 1 (DNMT1) regulates multiple programmed cell death types, impacting diseases like cancer. Understanding DNMT1
Area of Science:
- Epigenetics and Molecular Biology
- Cellular Biology
- Disease Mechanisms
Background:
- DNA methyltransferase 1 (DNMT1) is a key enzyme in DNA methylation and is implicated in various diseases.
- Programmed cell death (PCD) is crucial for organismal development and homeostasis.
- Dysregulation of PCD contributes to diseases such as cancer and neurological disorders.
Purpose of the Study:
- To summarize the regulatory role of DNMT1 in diverse PCD pathways.
- To explore DNMT1's association with disease development through PCD regulation.
- To highlight DNMT1 as a potential therapeutic target in multiple diseases.
Main Methods:
- Literature review and synthesis of existing research on DNMT1 and PCD.
- Analysis of DNMT1's involvement in apoptosis, autophagy, necroptosis, and ferroptosis.
- Examination of key genes and pathways regulated by DNMT1 in different PCD types.
Main Results:
- DNMT1 plays a significant regulatory role in apoptosis, autophagy, necroptosis, and ferroptosis.
- DNMT1 influences PCD by modulating critical proteins and pathways, including caspase 3/7, Beclin 1, LC3, GPX4, NCOA4, and the RIPK1-RIPK3-MLKL axis.
- DNMT1's dysregulation is linked to the pathogenesis of various diseases.
Conclusions:
- DNMT1 acts as a common regulatory hub across multiple PCD pathways.
- Targeting DNMT1 offers a potential therapeutic strategy for a range of diseases.
- Further research into DNMT1's role in PCD can provide new disease treatment perspectives.
Related Concept Videos
Abnormal Proliferation
4.5K
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...
4.5K
DNA Damage can Stall the Cell Cycle
9.2K
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
9.2K
Overview of Cell Death
7.3K
Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
7.3K
The Intrinsic Apoptotic Pathway
6.6K
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
6.6K
Apoptosis
11.5K
Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size...
11.5K
Overview of DNA Repair
31.1K
In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
Chemically...
31.1K

