Mechanotransduction regulates inflammation responses of epicardial adipocytes in cardiovascular diseases

Xiaoliang Liu1, Lei Liu1, Junfei Zhao2

  • 1Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education (MOE), Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.

Insights

Adipose tissue plays a key role in heart health. Mechanical forces influence cardiac adipocytes, impacting cardiovascular homeostasis and disease development, offering potential therapeutic targets.

Area of Science:

  • Cardiovascular Biology
  • Adipose Tissue Biology
  • Mechanobiology

Background:

  • Adipose tissue regulates cardiovascular homeostasis through bioactive secretions.
  • Adipose tissue disorders are linked to various cardiovascular diseases (CVD).
  • Tissue localization and metabolic state of adipose tissue influence cardiometabolic risk.

Purpose of the Study:

  • To clarify the role of mechanical stress in cardiac adipocyte homeostasis.
  • To explore the interplay between mechanical stress and cardiac function maintenance.
  • To understand adipocyte mechanotransduction in cardiovascular disorders for therapeutic development.

Main Methods:

  • Review of existing literature on adipose tissue, cardiovascular disease, and mechanotransduction.
  • Analysis of the crosstalk between adipose and myocardial tissues in cardiac pathologies.
  • Examination of the impact of mechanical forces on adipocyte development and function.

Main Results:

  • Adipose tissue distribution and metabolic status significantly affect cardiovascular health.
  • Mechanotransduction pathways are critical for adipocyte differentiation, proliferation, and homeostasis.
  • Abnormal cardiac adipose tissue distribution can directly or indirectly impair cardiac function.

Conclusions:

  • Mechanical stress is a vital factor in cardiac adipocyte biology.
  • Understanding adipocyte mechanotransduction offers novel therapeutic avenues for cardiovascular diseases.
  • Targeting mechanical signaling in cardiac adipocytes may improve cardiovascular homeostasis.

Related Concept Videos

Inflammatory Response01:28

Inflammatory Response

An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
4.4K
Inflammation01:38

Inflammation

Overview
54.4K
Tension Response at Adherens Junctions01:26

Tension Response at Adherens Junctions

The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin...
2.7K
cAMP-dependent Protein Kinase Pathways01:25

cAMP-dependent Protein Kinase Pathways

Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
6.5K
GPCRs Regulate Adenylyl Cylase Activity01:09

GPCRs Regulate Adenylyl Cylase Activity

Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of...
5.8K
Global Regulatory Systems01:28

Global Regulatory Systems

Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
56