Electrically-Directed Cell Motility and Migration

Cells across diverse tissues respond to externally or endogenously generated electric fields by polarising their membranes, reorganising cytoskeletal components and activating signal transduction pathways to migrate in a directed manner. This phenomenon, commonly termed galvanotaxis or electrotaxis, is evident in processes ranging from embryonic development and wound healing to cancer invasion and neural repair. The underlying mechanisms involve transmembrane ion fluxes—particularly of calcium and other cations—through voltage-sensitive channels, which establish regional differences in membrane potential. These ionic changes trigger intracellular signalling cascades, including the PI3K/AKT and ERK pathways, leading to asymmetric cytoskeletal remodelling and focal adhesion dynamics at the leading edge. Advances in microfabrication have enabled precise application of physiological-strength fields in vitro, revealing that cell type, field intensity and microenvironmental cues jointly determine directionality and speed. Harnessing electrically directed migration promises novel strategies for tissue engineering, regenerative medicine and targeted therapies that exploit bioelectric guidance cues.

Research from Nature Portfolio

Studies of breast tumour models have uncovered heterogeneity in electric currents and potentials at the surface of solid cancers, with stronger local fields correlating with tumour mass. In vitro experiments demonstrate that cancer cells organised in epithelial sheets migrate collectively toward the anode under physiological-strength fields, suggesting that electric cues in the microenvironment may contribute to metastatic spread. In parallel, investigations of brain tumour spheroids reveal opposing electrotactic behaviours among glioblastoma and medulloblastoma aggregates. Transcriptomic profiling and pharmacological inhibition identify the PI3K/mTOR/AKT axis as a critical mediator of directed migration in one cell type, while the other remains insensitive to the same inhibitors. These results highlight cell-type-specific electrical sensitivities and point to bioelectric modulation as a potential adjunct in oncology.

Electrically-Directed Cell Motility and Migration publication trend

The graph below shows the total number of articles in electrically-directed cell motility and migration across all publications each year (not limited to Nature Index journals).

Technical terms

Electric field: A spatial gradient of electrical potential that exerts force on charged particles and influences membrane voltage.

Galvanotaxis (electrotaxis): Directed cell movement in response to an applied or endogenous electric field.

Membrane potential: The voltage difference across a cell’s plasma membrane, determined by ionic distribution.

PI3K/AKT pathway: A key intracellular signalling cascade that regulates cell survival, motility and cytoskeletal dynamics.

Store-operated calcium channels (SOCs): Plasma membrane channels that permit Ca²⁺ influx when endoplasmic reticulum stores are depleted, linking electric sensing to migration.

References

1. Environmental Factors That Influence Stem Cell Migration: An “Electric Field”. Stem Cells International (2017).
2. Studying Electrotaxis in Microfluidic Devices. Sensors (2017).
3. Electric Fields at Breast Cancer and Cancer Cell Collective Galvanotaxis. Scientific Reports (2020).
4. Electrotaxis of Glioblastoma and Medulloblastoma Spheroidal Aggregates. Scientific Reports (2019).
5. Physiologic Electrical Fields Direct Retinal Ganglion Cell Axon Growth In Vitro. Investigative Ophthalmology & Visual Science (2019).
6. Persistent directional cell migration requires ion transport proteins as direction sensors and membrane potential differences in order to maintain directedness. BMC Molecular and Cell Biology (2011).
7. Calcium Ion Flow Permeates Cells through SOCs to Promote Cathode-Directed Galvanotaxis. PLOS ONE (2015).