Mammalian Sirtuins and Their Relevance in Vascular Calcification

Xinyue Pan1, Caixia Pi1, Xianchun Ruan1,2

  • 1State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.

Insights

Sirtuins, a protein family, play a key role in regulating vascular calcification (VC), a process linked to cardiovascular diseases. Understanding sirtuin functions offers new avenues for treating these conditions.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cardiovascular Research

Background:

  • Cardiovascular diseases (CVDs) cause significant morbidity and mortality globally.
  • Vascular calcification (VC), characterized by mineral deposition in vessel walls, is closely linked to CVDs like hypertension and heart failure.
  • Sirtuins (SIRTs) are NAD+-dependent histone deacetylases involved in crucial cellular processes including metabolism, senescence, and apoptosis.

Purpose of the Study:

  • To review and summarize current research on the relationship between sirtuins and vascular calcification.
  • To enhance understanding of VC mechanisms and facilitate the development of novel cardiovascular drugs.

Main Methods:

  • Literature review of recent studies on sirtuins and VC.
  • Analysis of sirtuin functions in relation to bone homeostasis and VC processes.
  • Examination of sirtuin-mediated deacetylation of target proteins involved in VC.

Main Results:

  • Sirtuins significantly influence VC, sharing similarities with bone formation processes.
  • Sirtuins have been shown to deacetylate various proteins critical to VC development.
  • The role of different sirtuin types in VC pathogenesis is increasingly recognized.

Conclusions:

  • Sirtuins are crucial regulators of vascular calcification.
  • Targeting sirtuin pathways presents a promising strategy for preventing and treating cardiovascular diseases associated with VC.
  • Further research into sirtuin-VC interactions can accelerate cardiovascular drug discovery.

Related Concept Videos

Atherosclerosis I: Introduction01:30

Atherosclerosis I: Introduction

Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
99
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
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.7K