Photo: STEFAN SIEBERT AND YASHODARA ABEYKOON / JULIANO LAB AT UC DAVIS
Scientists at the University of California, Davis (USA) have uncovered the genetic mechanism of tissue regeneration in the freshwater Hydra, which allows the animal to recover his body from a piece of cloth, and also provides biological immortality. This publication reports Science News.
In the regeneration of polyps are three groups of stem cells that turn into nerve tissue, glands, and other organs. The researchers analyzed 25 thousand cells isolated from the animals to determine which genes are active within each. The researchers used fluorescent probes that bind to messenger RNA — a direct product of gene expression used for the synthesis of the corresponding protein. This allowed us to trace the fate of individual cells.
Biologists have found that stem cells give rise to cells-the precursors that are localized in the outer tissue layer and form either nerve tissue or turn into cancer. While gene expression changes as the cell migrates in the body of the Hydra. It is possible to create a map of the 12 different types of nerve cells and other tissues.
The researchers hope that the scientific results will help to develop new methods of healing of damaged tissues in humans.
Video, photo All from Russia.