Skin Cells ‘Scream’ for Help When Injured
Our skin’s epithelial cells are more than just a protective barrier—they can actually send electrical signals like neurons to cry out for help when injured. This groundbreaking discovery has shed light on a previously unknown communication system within our bodies that may play a crucial role in the healing process.
According to a study published in the Proceedings of the National Academy of Sciences USA, researchers found that epithelial cells emit a slow electric pulse when wounded, similar to the firing of neurons. This signal acts as a distress call, alerting nearby cells that assistance is needed to repair the damaged tissue.
Ellen Foxman, a researcher at the Yale School of Medicine, explains that epithelial cells are found in the skin’s outer layer and lining of various organs, serving as a crucial link between our body and the outside world. While these cells were known to communicate through chemical signals during the healing process, the discovery of their electrical signaling pathway opens up new possibilities for understanding how our bodies respond to injuries.
Sun-Min Yu, the lead author of the study and an engineer at the University of Massachusetts Amherst, conducted experiments using cultured human skin cells and dog kidney cells fitted with electrodes. When these cells were wounded with a laser, she observed distinct electrical signals emanating from the injured sites, resembling the activity of neurons.
This revelation has sparked further questions about the role of electrical signaling in epithelial cells and its implications for healing. Sarah Najjar, a researcher at New York University studying gut epithelial cells, wonders about the downstream effects of this electrical activity. How does it impact other cells, including neurons, and what role does it play in the overall healing process?
Yu plans to delve deeper into the interaction between epithelial cells and neurons to understand how these distinct types of cells communicate and collaborate during the healing process. By unraveling the mysteries of this newfound signaling pathway, researchers hope to develop new treatments for conditions that arise from faulty healing processes, such as chronic health conditions and scarring.
In conclusion, the discovery of epithelial cells’ ability to ‘scream’ for help through electrical signals has opened up a new frontier in the study of cellular communication and healing. By unlocking the secrets of how our cells coordinate repair and regeneration, scientists are paving the way for innovative treatments that could revolutionize healthcare in the future.
