Transgelin Functions in Cancer Cell Dynamics

Transgelin is a family of actin-binding proteins that regulate cytoskeletal architecture and underpin essential processes in cancer cell behaviour, including migration, invasion and proliferation. Initially identified as a smooth muscle marker, transgelin isoforms have since been implicated both as tumour suppressors and as facilitators of metastasis, a duality that reflects context-dependent expression and post-translational modification. In migrating cells, transgelin interacts with filamentous actin to modulate polymerisation dynamics, favouring the formation of membrane protrusions such as filopodia and invadopodia. These structures drive directional cell movement, extracellular matrix degradation and intravasation. Beyond its structural role, transgelin influences signalling cascades central to oncogenesis, including modulation of kinase pathways and transcriptional programmes associated with epithelial–mesenchymal transition. Recent insights into transgelin phosphorylation and its interplay with Rho-GTPases have highlighted mechanisms by which tumour cells adapt cytoskeletal tension to navigate diverse microenvironments. The global significance of transgelin research extends from the identification of novel biomarkers for metastatic risk to the development of targeted strategies that abrogate cell motility. Understanding the multifaceted functions of transgelin in cancer cell dynamics is therefore critical for the translation of basic cytoskeletal biology into therapeutic interventions.

Research from Nature Portfolio

Recent studies have elucidated foundational mechanisms by which transgelin-2 regulates actin architecture. One investigation demonstrated that transgelin-2 can nucleate G-actin polymerisation under low ionic strength and, conversely, inhibit Arp2/3-mediated branched filament formation under physiological conditions, thereby promoting filopodia-like protrusions that resemble those found at the leading edge of metastatic cells. Another study revealed that transgelin-2 is upregulated in activated macrophages to facilitate phagocytic cup formation via PI3K/AKT and ERK signalling, underscoring its capacity to stabilise actin structures under dynamic cellular contexts. Together, these works provide mechanistic principles for how transgelin-mediated actin remodelling may be co-opted by cancer cells to enhance invasive behaviour.

Transgelin Functions in Cancer Cell Dynamics publication trend

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

Technical terms

Transgelin: A 22- to 25-kDa actin-binding protein that modulates cytoskeletal organisation and cell motility.

Actin polymerisation: The assembly of globular (G-actin) monomers into filamentous (F-actin) structures that generate force for cell movement.

Arp2/3 complex: A seven-subunit protein assembly that nucleates branched actin filaments to form lamellipodia.

Filopodia: Thin, finger-like membrane protrusions composed of parallel actin bundles that sense the extracellular environment and direct migration.

Phosphorylation: The covalent addition of phosphate groups to proteins by kinases, regulating activity and protein–protein interactions.

References

1. Transgelin-2 is a novel target of KRAS-ERK signaling involved in the development of pancreatic cancer. Journal of Experimental & Clinical Cancer Research (2018).
2. Transgelin increases metastatic potential of colorectal cancer cells in vivo and alters expression of genes involved in cell motility. BMC Cancer (2016).
3. Transgelin is a poor prognostic factor associated with advanced colorectal cancer (CRC) stage promoting tumor growth and migration in a TGFβ-dependent manner. Cell Death & Disease (2020).
4. An Essential Role for TAGLN2 in Phagocytosis of Lipopolysaccharide-activated Macrophages. Scientific Reports (2017).
5. TAGLN2 polymerizes G-actin in a low ionic state but blocks Arp2/3-nucleated actin branching in physiological conditions. Scientific Reports (2018).
6. Transgelin-2: A Double-Edged Sword in Immunity and Cancer Metastasis. Frontiers in Cell and Developmental Biology (2021).