Role of Post-translational Modification of Silent Mating Type Information Regulator 2 Homolog 1 in Cancer and Other

Yeon-Hwa Lee1, Su-Jung Kim2, Young-Joon Surh1,3

  • 1Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul, Korea.

Insights

Silent mating type information regulator 2 homolog 1 (SIRT1) is crucial for many bodily functions. Post-translational modifications regulate SIRT1 activity, impacting disease development.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Genetics

Background:

  • Silent mating type information regulator 2 homolog 1 (SIRT1) is an NAD+-dependent deacetylase with vital roles in cellular processes.
  • Dysregulation of SIRT1 is linked to various human diseases.
  • SIRT1 activity is modulated by numerous post-translational modifications.

Purpose of the Study:

  • To review the regulatory mechanisms of SIRT1 post-translational modifications.
  • To explore the pathophysiological implications of these modifications.

Main Methods:

  • Literature review of studies on SIRT1.
  • Analysis of post-translational modification pathways.
  • Correlation of modifications with disease states.

Main Results:

  • SIRT1 undergoes diverse modifications like phosphorylation, ubiquitination, and SUMOylation.
  • These modifications alter SIRT1's catalytic activity, stability, and substrate interactions.
  • Specific modifications are associated with the pathogenesis of various diseases.

Conclusions:

  • Post-translational modifications are critical regulators of SIRT1 function.
  • Understanding these modifications offers insights into SIRT1-related diseases.
  • Targeting SIRT1 modifications may present therapeutic strategies.

Related Concept Videos

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
Covalently Linked Protein Regulators02:04

Covalently Linked Protein Regulators

Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
6.9K
Abnormal Proliferation02:23

Abnormal Proliferation

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...
4.6K
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
Master Transcription Regulators02:23

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.0K
Negative Regulator Molecules01:23

Negative Regulator Molecules

Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
35.6K