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Scientists at Cambridge University have described two types of transmissible cancer that affects Tasmanian devil (Sarcophilus harrisii). They also identified the reasons for this mammal more susceptible to cancer infective than other animals. About it reported in a press release on EurekAlert!.
Eight known types of transmissible cancer that affect dogs, Tasmanian devils marsupials and marine bivalves. The researchers believed that since this disease is very rare, marsupials got it by accident. However, the opening of the second type of infectious malignant tumors has indicated that Sarcophilus harrisii have features that make them vulnerable to disease.
It turned out that the appearance of both types of cancer contribute to a similar mutation and develop tumors from approximately the same tissue. Since animals often bite each other in the face when fighting for food or the ability to leave offspring, tumors can develop from cells involved in wound healing. It is shown that drugs that block the biochemical pathways involved in tissue regeneration, inhibit the growth of facial tumors.
Researchers believe that the spread of tumors might also help people, which is the number of Tasmanian devils has fallen sharply. Reduced genetic diversity necessary for adaptation of the immune system to malignant cells.
Video, photo All from Russia.