Cell-Extracellular Matrix Interactions and Apoptosis Mechanisms

The extracellular matrix (ECM) provides both structural support and biochemical cues that govern cell behaviour, notably survival and programmed cell death. Cells adhere to the ECM primarily via integrin receptors, which assemble multiprotein complexes known as focal adhesions. These structures link the cell’s cytoskeleton to the matrix and transduce mechanical and chemical signals into intracellular pathways. Dynamic changes in ECM composition and stiffness can modulate signalling cascades such as the PI3K–AKT and ERK modules, tipping the balance between proliferation and apoptosis. A specialised form of detachment-induced apoptosis, termed anoikis, is critically regulated by integrin inactivation and subsequent engagement of death receptors and caspases. Emerging work highlights feedback loops in which mechanotransducers like YAP interact with Rho-family GTPases to control both adhesion and survival. Disruption of normal cell–ECM interactions underlies processes as varied as tissue repair, embryonic morphogenesis and cancer metastasis, making this interface a focal point for therapeutic innovation.

Research from Nature Portfolio

Recent studies have elucidated a switch-like mechanism by which the transcriptional co-activator YAP senses nanoscale features of the matrix to drive epithelial–mesenchymal transition. Two interlinked feedback loops involving Wilms tumour-1 and Rho-family GTPases reorganise cell–matrix contacts and promote invasive behaviour through YAP-dependent remodelling. In parallel, a novel anoikis pathway has been defined that centres on integrin inactivation by a fungal toxin analogue. This mechanism inhibits focal adhesion kinase, leading to sequential activation of RhoA, ROCK and JNK and culminating in pro-apoptotic phosphorylation of Bim. Together, these findings reveal how mechanical and chemical perturbations of the ECM converge on common signalling nodes to determine cell fate.

Cell-Extracellular Matrix Interactions and Apoptosis Mechanisms publication trend

The graph below shows the total number of articles in cell-extracellular matrix interactions and apoptosis mechanisms across all publications each year (not limited to Nature Index journals).

Technical terms

Extracellular Matrix (ECM): A complex network of proteins and glycosaminoglycans that provides structural support and biochemical signals to surrounding cells.

Integrins: Transmembrane receptors that mediate cell adhesion to ECM components and initiate intracellular signalling cascades.

Focal Adhesion: Multiprotein assembly linking integrins to the actin cytoskeleton, serving as both a mechanical anchor and a signalling hub.

Anoikis: A form of apoptosis triggered by loss of cell–ECM attachment, crucial for preventing detached cells from colonising inappropriate sites.

Mechanotransduction: The process by which cells convert mechanical stimuli from their environment into biochemical signals that regulate cell behaviour.

References

1. Anoikis in cell fate, physiopathology, and therapeutic interventions. MedComm (2024).
2. ECM stiffness regulates lung fibroblast survival through RasGRF1-dependent signaling. Journal of Biological Chemistry (2025).
3. Switch-like enhancement of epithelial-mesenchymal transition by YAP through feedback regulation of WT1 and Rho-family GTPases. Nature Communications (2019).
4. Identification of a novel anoikis signalling pathway using the fungal virulence factor gliotoxin. Nature Communications (2018).
5. The Cleavage of Akt/Protein Kinase B by Death Receptor Signaling Is an Important Event in Detachment-induced Apoptosis*. Journal of Biological Chemistry (2001).