Researchers at Texas A&M University have presented the results of a study into the mechanisms of tissue regeneration in mammals. The work focuses on identifying ways to restore damaged tissues without scar formation and could lay the foundation for the development of new approaches in regenerative medicine.
In an experiment involving laboratory mice, the researchers studied the regeneration of the tip of a digit following amputation. Once the wound had fully healed, two signaling proteins—FGF2 and BMP2—which regulate cellular behavior and participate in tissue repair processes, were administered sequentially at the injury site.
Under the influence of these proteins, the animals developed a cellular structure resembling a blastema—the tissue that enables some amphibian species, such as salamanders, to regenerate lost limbs. As a result, the researchers observed the formation of new bone, joint, and connective tissue structures.
The authors note that the original structure of the digit has not yet been fully restored. However, the findings indicate that the regenerative capacity of mammals may be considerably greater than previously assumed.
One of the study's key findings was that tissue regeneration occurred without the use of stem cells. According to the researchers, the necessary cells are already present in the body; the main challenge is to create conditions under which they participate in tissue regeneration rather than scar formation.
The findings broaden our understanding of regeneration mechanisms and may contribute to the development of new treatments for severe injuries. Such research is of particular interest to veterinary medicine, as it opens up prospects for innovative approaches to tissue regeneration in animals.