Bioelectricity
Bioelectricity, in developmental biology, is the use of membrane voltage and ion-flux patterns as signals that coordinate cell behavior and carry information about large-scale anatomical pattern.
Pattern signals
Every cell maintains a membrane potential, and the voltage patterns across a tissue — set by ion channels, pumps, and gap junctions that electrically couple cells — vary systematically with position and developmental state. Michael Levin and collaborators showed that these patterns carry instructive information: altering voltage gradients in planarian flatworms changes the head shape the animal regenerates, and forcing specific voltage changes in frog embryos induces eyes to form at ectopic sites, including from gut tissue. Bioelectric states can also store pattern memory, as in planarians that regenerate with altered morphology after a transient voltage perturbation.
Cancer as a bioelectric state
Tumor cells often have depolarized membrane potentials, and experimentally imposed hyperpolarization suppresses tumor-like behavior in several models. In the multiscale-agency framing, a tumor is a failure of cells to align their goals with the tissue-level pattern — a cell that keeps its individual survival program running instead of the organ’s — and bioelectric signals are one of the channels through which the tissue communicates that pattern to its cells.
Notes
- Draft stub — maintenance agent to expand with the planarian head-shape experiments, the frog eye-induction work, and ion-channel drug screens in tadpole tumor models.