Related Experiment Video
Updated: Jun 6, 2026

09:14
Static Adhesion Assay for the Study of Integrin Activation in T Lymphocytes
Published on: June 13, 2014
Integrins: versatile receptors controlling melanocyte adhesion, migration and proliferation
Perrine Pinon1, Bernhard Wehrle-Haller
1Department of Cell Physiology and Metabolism, Centre Médical Universitaire, University of Geneva, Medical School, Geneva, Switzerland.
Pigment Cell & Melanoma Research
|November 20, 2010
Summary
Melanocytes use integrin receptors to interact with their environment during development. This cell adhesion mechanism is crucial for understanding melanoma growth and metastasis.
Area of Science:
- Developmental Biology
- Cell Biology
- Biochemistry
Background:
- Melanocytes originate from neural crest cells and migrate during embryogenesis.
- Melanocytes reside in the basal layer of keratinocytes, interacting with the extracellular environment.
- Integrins are cell surface receptors critical for cell adhesion and environmental sensing.
Purpose of the Study:
- To review current understanding of integrin-dependent adhesion in melanocytes.
- To explore how integrin adhesion interfaces with intracellular signaling pathways.
- To provide insights into melanocyte behavior in pathological conditions like melanoma.
Main Methods:
- Literature review of recent research on integrin function in melanocytes.
- Analysis of integrin-mediated interactions with the extracellular matrix.
- Examination of integrin signaling pathways influencing cell behavior.
Main Results:
- Integrins mediate melanocyte recognition and adhesion to the extracellular environment.
- Integrins enable cells to sense mechanical cues from their surroundings.
- Integrin signaling regulates cell survival, proliferation, and migration.
Conclusions:
- Integrin-dependent adhesion is fundamental to melanocyte development and function.
- Understanding integrin mechanisms is vital for addressing melanoma progression.
- This review consolidates knowledge on integrin roles in normal and pathological melanocyte biology.
Related Concept Videos
Integrins
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,...
Intracellular 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...
Activation 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.
Selectins
Cell adhesion is an essential aspect of multicellularity. While stable cell interactions usually occur between cells of the same type, transient cell interactions occur between cells of different tissue types, such as between neutrophils and endothelial cells. Selectins are one class of cell adhesion molecules (CAMs) that bind carbohydrate ligands to form transient cell adhesion. They are rod-like proteins with a long extracellular part of variable length ending with the lectin domain, which...
Adherens Junctions
Strong contact points between adjacent cells anchor them to each other, forming tissues. Such anchoring junctions are of two types – adherens junctions and desmosomes. Adherens junctions are abundant in tissues such as epithelium and endothelium, forming a continuous zone of adhesion called the adhesion belt. In other tissues, such as heart muscle, they appear as clusters, linking the cells to produce coordinated heart muscle contraction.
Adherens Junctions are Dynamic
The endothelial cells...
Adherens Junctions are Dynamic
The endothelial cells...
Role 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.

