[quick news] on February 21, 2019, scientists deciphered the whole genome of great white shark and discovered the evolution mechanism of anti-cancer

Scientists have deciphered the whole genome of great white shark and discovered the evolution mechanism of anti-cancer Recently, an international research team deciphered the whole genome of great white shark and found that it gained a kind of anti-cancer ability by relying on the gene sequence changes generated in the evolution process, with a life span of up to 70 years In theory, the increase in the number of cells caused by long life and large size will increase the probability of cancer in animals The researchers found that many specific DNA sequences related to maintaining genomic stability in great white sharks have changed, which shows a molecular adaptation They believe that this adaptability can help the great white shark to form an efficient DNA damage repair mechanism and increase the gene abundance to maintain genome stability Studies have shown that this adaptive improvement also enables the great white shark to quickly heal and repair wounds Https://www.pnas.org/content/early/2019/02/13/1819778116 lung pluripotent stem cells can participate in "cross-border" lung regeneration, which is the respiratory organ of human body, and is essential for gas exchange and resistance to pathogen invasion Once the lung is damaged, the normal life activities of human body will also be affected Zhou Bin and Ji Hongbin, research team of Institute of Biochemistry and cell biology, Chinese Academy of Sciences, and Peng Guangdun research team of Guangzhou Institute of biomedicine and health, confirmed that there is a kind of lung pluripotent stem cells participating in lung regeneration in human body, which can "differentiate on demand" and complete the "cross-border maintenance" of lung interior This study provides a new idea for lung injury repair and regenerative medicine research, and provides a solid theoretical basis for stem cell therapy of lung diseases Https://www.nature.com/articles/s41588-019-0346-6 studies have found that more and more clinical studies have found that light does affect mood, and even can be used as "antidote" for depression At present, the treatment of depression includes drug therapy, psychological therapy and physical therapy, but there are limitations in different degrees Phototherapy has different therapeutic effects on seasonal depression, severe depression, prenatal and postnatal depression However, at present, the neural mechanism of antidepressant effect of phototherapy is not clear, and the application paradigm of phototherapy is controversial Recently, researchers from Jinan University found a neural pathway from the retina to the lateral habenular nucleus in the brain of mice, providing clues for people to further understand the antidepressant mechanism of phototherapy Https://www.sciencedirect.com/science/article/pii/s089662731300649 smoking may damage the body's ability to resist skin cancer a recent study has shown that smoking may affect the body's immune system's ability to fight the main skin cancer melanoma Compared with non-smoking melanoma patients, the survival rate of melanoma patients with long-term smoking history will be significantly reduced The researchers analyzed more than 700 melanoma patients in the UK and found that those who smoked were 40% less likely to survive than those who did not smoke for 10 years after the diagnosis The researchers believe that smoking has an impact on the immune system, changing its ability to fight skin cancer and increasing other health risks Therefore, they strongly suggest that patients with melanoma who have a habit of smoking should quit smoking as soon as possible Http://cancerres.aacrjournals.org/content/early/2019/02/13/0008-5472.can-18-2864 "triple gate" and "superstar academic bully" Zhai Tianlin's academic misconduct event of star academic fraud has attracted continuous public attention in the near future On February 14, Guanghua School of management and Beijing Film Academy of Peking University said they had launched an investigation into Zhai Tianlin's "suspected academic misconduct" Under the pressure of public opinion, Zhai Tianlin expressed his willingness to cooperate with the investigation and applied to withdraw from the relevant work of the post doctoral research mobile station On June 16, Peking University confirmed Zhai Tianlin's academic misconduct, agreed to Guanghua School of management's decision to withdraw from the postdoctoral workstation, and to deal with the relevant cooperative tutors' decision to stop recruiting postdoctors Zhai Tianlin's doctoral degree and his supervisor Chen Yu's qualification as a doctoral supervisor were revoked Tuesday by Beijing Film Academy http://news.sciencenet.cn/htmlnews/2019/2/423063.shtm