Integrins and GTPases in tumour cell growth, motility and invasion

P Keely1, L Parise, R Juliano

  • 1Dept of Pharmacology, School of Medicine, University of North Carolina, Chapel Hill 27599, USA. arjay@med.unc.edu

Trends in Cell Biology
|August 8, 1998
PubMed

Insights

Cell adhesion molecules called integrins and Rho GTPases coordinate cell behavior through bidirectional signaling. This review explores their interplay in cancer cell growth and function.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Cancer Research

Background:

  • Cell-adhesion receptors, particularly integrins, are crucial for cell communication.
  • Integrins mediate bidirectional signaling between the extracellular matrix and the cell interior.
  • Emerging evidence highlights the collaboration between integrins and Rho GTPases in regulating cellular processes.

Purpose of the Study:

  • To review the current understanding of integrin signaling pathways.
  • To examine the interplay between integrins and Rho GTPases.
  • To discuss the implications of this interplay in cancer cell growth and behavior.

Main Methods:

  • Literature review of recent research on integrin signaling and Rho GTPases.
  • Synthesis of findings on the coordinated roles of integrins and GTPases.
  • Analysis of the relevance of these interactions in the context of cancer.

Main Results:

  • Integrins facilitate signal transduction from the extracellular matrix to the cell.
  • Intracellular events modulate integrin affinity for their ligands.
  • Integrins and Rho GTPases cooperate to orchestrate cytoskeletal organization and signaling.

Conclusions:

  • The bidirectional signaling capacity of integrins is a key area of research.
  • The coordinated action of integrins and Rho GTPases is vital for cell function.
  • Understanding integrin-GTPase interplay offers insights into cancer progression and potential therapeutic targets.

Related Concept Videos

GTPases and their Regulation02:14

GTPases and their Regulation

Guanine nucleotide-binding proteins (G-proteins), also known as GTPases, are a superfamily of proteins that regulate many cellular processes, such as cell signaling, vesicular transport, and the regulation of cell shape and motility. Mutation or dysfunction of these proteins can lead to disease. There are around 40,000 known G-proteins that can broadly be classified into two groups ‒  small G-proteins consisting of a single domain and large multi-domain G-proteins.
Large G-proteins,...
9.8K
GTPases and their Regulation02:14

GTPases and their Regulation

No description available
3.0K
Integrins01:10

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,...
5.4K
Activation of Integrins01:15

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...
5.1K
Microtubules in Cell Motility01:24

Microtubules in Cell Motility

Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
4.8K
Cell Motility through Blebbing01:16

Cell Motility through Blebbing

Blebs are a type of membrane protrusion formed by the internal hydrostatic pressure of the cytoplasm. Blebs are observed in several cell types, including fibroblasts, immune cells, and single-celled organisms like the amoeba. The primary function of blebs is cell locomotion and apoptosis, but they are also found during necrosis and cell division. The life cycle of a bleb comprises an initiation phase followed by the expansion and retraction phases.
Blebbing Through the Matrix
In multicellular...
2.5K