Invadopodia Dynamics in Cancer Cell Invasion

Invadopodia are specialised, actin-rich membrane protrusions formed by cancer cells that orchestrate localised degradation of the extracellular matrix (ECM) and facilitate tumour cell invasion and metastasis. Their dynamic life cycle involves coordinated assembly of actin polymerisation machinery, recruitment of scaffold and adaptor proteins, and targeted delivery of proteolytic enzymes. The formation phase is driven by nucleation-promoting factors such as the Arp2/3 complex, cortactin and scaffold proteins including Tks5, which organise a dense actin network at the protrusive tip. Concurrently, matrix metalloproteinases, notably membrane type I matrix metalloprotease (MT1-MMP), are trafficked to invadopodia via vesicular carriers, enabling focalised ECM cleavage. Disassembly follows proteolysis and is regulated by signalling kinases and endocytic pathways that recycle structural components. Recent studies have shown that invadopodia respond to mechanical cues within the tumour microenvironment, adapting their proteolytic output and persistence in three-dimensional matrices. This dynamic interplay between biomechanical stimuli and protease activity is critical for tumour cell penetration through confined spaces and contributes to intravasation, dissemination and colonisation of secondary sites. Understanding the molecular choreography of invadopodia assembly and turnover offers avenues for the development of targeted inhibitors to impede metastasis.

Research from Nature Portfolio

Recent studies have revealed intercellular transfer of invasive capacity via endosome-mediated shedding of protease ectodomains, highlighting a mechanism in which donor cells deploy adaptor proteins to cleave and package active MT1-MMP into vesicles that convert recipient cells into an invasive phenotype. Complementary work has uncovered a bidirectional interplay between caveolae and invadosomes at collagen contact sites, demonstrating that mechanosensitive recruitment of caveolar clusters precedes invadopodia formation. This reciprocal regulation modulates β1 integrin distribution and orchestrates collagen uptake and proteolysis to facilitate tumour cell dissemination through three-dimensional fibrillar environments.

Invadopodia Dynamics in Cancer Cell Invasion publication trend

The graph below shows the total number of articles in invadopodia dynamics in cancer cell invasion across all publications each year (not limited to Nature Index journals).

Technical terms

Invadopodia: Actin-rich, protease-bearing membrane protrusions that mediate focal extracellular matrix degradation by invasive cancer cells.

Extracellular matrix (ECM): A network of proteins and polysaccharides surrounding cells, providing structural support and regulating cell behaviour.

Membrane type I matrix metalloprotease (MT1-MMP): A transmembrane protease essential for pericellular collagenolysis and invadopodia-mediated invasion.

Tks5: A scaffold protein localised to invadopodia that organises actin regulators and protease trafficking for matrix remodelling.

Cortactin: An actin-binding protein that promotes Arp2/3-mediated actin nucleation and stabilises invadopodia structure.

References

1. Intercellular transfer of cancer cell invasiveness via endosome-mediated protease shedding. Nature Communications (2024).
2. A mechanosensitive caveolae–invadosome interplay drives matrix remodelling for cancer cell invasion. Nature Cell Biology (2023).
3. Protein dynamics at invadopodia control invasion–migration transitions in melanoma cells. Cell Death & Disease (2023).
4. A MAP1B–cortactin–Tks5 axis regulates TNBC invasion and tumorigenesis. Journal of Cell Biology (2024).
5. The regulation of MMP targeting to invadopodia during cancer metastasis. Frontiers in Cell and Developmental Biology (2015).
6. LINC complex-Lis1 interplay controls MT1-MMP matrix digest-on-demand response for confined tumor cell migration. Nature Communications (2018).