Related Experiment Video
Updated: Jun 25, 2026
09:10
Human Saphenous Vein Endothelial Cell Isolation and Exposure to Controlled Levels of Shear Stress and Stretch
Published on: April 21, 2023
Integrin linked kinase (ILK) expression and function in vascular smooth muscle cells
Bernard Ho1, Michelle P Bendeck
1Department of Laboratory Medicine and Pathobiology, University of Toronto, ON, CA.
Cell Adhesion & Migration
|March 6, 2009
Summary
Integrin-linked kinase (ILK) is crucial for vascular smooth muscle cell (SMC) functions in vascular injury. This review details ILK
Area of Science:
- Molecular Biology
- Cell Biology
- Cardiovascular Research
Background:
- Vascular smooth muscle cell (SMC) migration and proliferation are key to arterial wound repair and vascular diseases like atherosclerosis.
- Integrin receptors mediate cell adhesion to the extracellular matrix, influencing SMC behavior.
- Integrin-linked kinase (ILK) is a critical downstream signaling molecule in integrin pathways, acting as both a kinase and a scaffolding protein.
Purpose of the Study:
- To review and contextualize the existing literature on the expression and function of ILK in vascular smooth muscle cells.
- To highlight the role of ILK in SMC response to vascular injury, a process not yet well-characterized.
- To explore ILK's involvement in processes such as cell adhesion, migration, proliferation, and cytoskeleton organization within SMCs.
Main Methods:
- Literature review synthesizing current research on ILK in vascular smooth muscle cells.
- Analysis of ILK's known functions in cell signaling, cytoskeleton dynamics, and cell cycle regulation.
- Examination of ILK's established roles in other biological contexts (e.g., cancer, development) for potential relevance to vascular pathology.
Main Results:
- ILK is implicated in regulating SMC migration and proliferation, processes central to vascular pathologies.
- ILK acts as a molecular adaptor, linking integrins to the actin cytoskeleton, influencing cell adhesion and motility.
- ILK's kinase activity and scaffolding functions are relevant to downstream signaling pathways (e.g., Akt, GSK3beta) affecting cell survival and growth.
Conclusions:
- ILK plays a significant, though not fully elucidated, role in the vascular smooth muscle cell response to injury.
- Understanding ILK's function in SMCs is crucial for developing therapeutic strategies targeting vascular diseases.
- Further research is warranted to fully characterize ILK's specific mechanisms and contributions in vascular pathologies.
More Related Videos
08:28Isolation of Primary Patient-specific Aortic Smooth Muscle Cells and Semiquantitative Real-time Contraction Measurements In Vitro
Published on: February 15, 2022
06:14Murine Aortic Crush Injury: An Efficient In Vivo Model of Smooth Muscle Cell Proliferation and Endothelial Function
Published on: June 11, 2017
Related Concept Videos
01:17Intracellular Signaling Affects Focal Adhesions
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
01:15Activation of Integrins
Integrins bind ligands and transmit information from outside the cell to inside or vice-versa through an "outside-in signaling" or "inside-out signaling."
In "outside-in signaling," external factors in the extracellular space bind to exposed ligand binding sites on integrins. This causes the inactive protein to undergo a conformational change to become active. Integrins are often clustered on the cell membrane. Repetitive and regularly spaced ligand binding events provide an effective stimulus.
In "outside-in signaling," external factors in the extracellular space bind to exposed ligand binding sites on integrins. This causes the inactive protein to undergo a conformational change to become active. Integrins are often clustered on the cell membrane. Repetitive and regularly spaced ligand binding events provide an effective stimulus.
01:10Integrins
Animal and protozoan cells do not have cell walls to help maintain shape and provide structural stability. Instead, these eukaryotic cells secrete a sticky mass of carbohydrates and proteins into the spaces between adjacent cells. This network of proteins and molecules is called an extracellular matrix or ECM.
Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...
Some ECM proteins assemble into a basement membrane to which the remaining components adhere. Proteoglycans typically form the bulk of the ECM while fibrous proteins, like collagen,...
01:24Regulation 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 hydroxylase and factor...
01:31Immunoglobulin-like Cell Adhesion Molecules
Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
01:22Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.