A-type lamins and cardiovascular disease in premature aging syndromes

Beatriz Dorado1, Vicente Andrés1

  • 1Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), CIBER de Enfermedades Cardiovasculares, Madrid, Spain.

Insights

Abnormal accumulation of prelamin A and progerin causes premature aging syndromes and cardiovascular disease. Understanding these mechanisms is key to developing therapies for progeria and aging.

Area of Science:

  • Cell biology
  • Genetics
  • Cardiovascular medicine

Background:

  • Lamin A is a crucial nuclear protein in mammalian cells.
  • Mutations or precursor accumulation (prelamin A, progerin) lead to progeroid laminopathies.
  • These syndromes involve severe cardiovascular issues and premature death.

Purpose of the Study:

  • To review studies on how abnormal prelamin A and progerin accelerate cardiovascular disease and aging.
  • To explore therapeutic strategies for progeria.
  • To identify mechanisms underlying normal aging.

Main Methods:

  • Review of cell and mouse models.
  • Analysis of patient studies.
  • Synthesis of existing research.

Main Results:

  • Abnormal prelamin A and progerin accumulation are strongly linked to accelerated cardiovascular disease.
  • These protein abnormalities contribute to premature aging phenotypes.
  • Insights gained from progeria models offer potential for understanding normal aging.

Conclusions:

  • Targeting prelamin A and progerin accumulation may offer effective therapies for progeria.
  • Research into progeroid laminopathies provides valuable insights into cardiovascular aging.
  • Further understanding of these pathways could reveal novel therapeutic targets for age-related diseases.

Related Concept Videos

Laminins are the Adhesive Proteins of Basal Lamina00:55

Laminins are the Adhesive Proteins of Basal Lamina

Laminins are heterotrimeric proteins with high molecular mass found in the extracellular matrix. Each laminin molecule is composed of three chains, viz. alpha, beta, and gamma, coded by five, four, and three paralogous genes, respectively. Laminins are categories based on the compositions of the three chains.
In humans, the five forms of alpha chains are LAMA 1, LAMA 2, LAMA 3, LAMA 4, and LAMA 5. The four forms of beta chains are LAMB 1, LAMB 2, LAMB 3, and LAMB 4. The three forms of gamma...
3.8K
Type IV Collagen of Basal Lamina01:05

Type IV Collagen of Basal Lamina

Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen  forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
A type IV collagen molecule has six alpha chains which can...
3.2K
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...
1.7K
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
593
Cytoskeletal Linker Proteins - Plakins01:09

Cytoskeletal Linker Proteins - Plakins

Plakins are large proteins with binding domains for microtubules, microfilaments, intermediate filaments, and membrane-associated protein complexes at cell junctions. Plakin functions are evolutionarily conserved and are primarily involved in organizing the different components of the cytoskeleton by crosslinking them to each other and connecting them to the cell-matrix and cell adhesion complexes. They are also known to interact with signal transducers, serve as scaffolds for signaling...
3.0K
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
1.4K