[quick news] on February 25, 2019, researchers first synthesized DNA with 8 bases

Researchers first synthesized DNA containing eight bases The DNA of life on earth contains four bases Now, American scientists have doubled the number of life "alphabets" and synthesized DNA containing eight bases for the first time Experiments show that synthetic DNA seems to be able to store and transcribe information like natural DNA By adjusting the molecular structure of common bases, the researchers created two new pairs of bases: s and B, P and Z Experiments show that synthetic sequences have the same properties as natural DNA: they pair reliably in the same way; the double helix structure remains stable regardless of the sequence of synthetic bases; DNA can be faithfully transcribed into RNA This result is the first systematic proof that synthetic base and natural base can recognize and combine each other, and the formed double helix can keep stable Http://science.sciencemag.org/content/363/6429/884 key points of work of Ministry of education in 2019: Deepening the reform of education evaluation system recently released by Ministry of education in 2019 This year, 34 key points were made, including promoting the deep integration of information technology and education and teaching, strengthening labor education, promoting the development of preschool inclusive education, effectively reducing the extra-curricular burden of primary and secondary school students, deepening the reform of education evaluation system, and systematically promoting the reform of education supervision system and mechanism In the aspect of deepening the reform of education evaluation system, the Ministry of education proposes to carry out in-depth investigation and Research on the reform of education evaluation system, launch relevant measures of evaluation reform in categories, and form a relatively complete framework of education evaluation reform system In promoting the deep integration of information technology and education and teaching, we will implement the education informatization 2.0 action plan and study the development plan of China's intelligent education Http://www.moe.gov.cn/jyb ﹐ xwfb / gzdt ﹐ gzdt / s5987 / 201902 / t20190222 ﹐ new flowers of old medicine: aspirin is expected to treat a class of autoimmune diseases, cyclic guanosine synthetase (CGAs), as a DNA receptor, has become an important scientific topic in the field of life science in recent years Recently, the team of academician Zhang Xuemin and Dr Li Tao of the Academy of military medicine of the PLA Academy of Military Sciences revealed the role of aspirin in controlling the activation of CGAs through acetylation mechanism This work reveals the regulation law of anti-virus infection, so that human beings will not only have the means to control the known virus infection, but also have the ability to deal with the unknown virus infection in the future Https://www.cell.com/cell/fulltext/s0092-8674 (19) 30049-2 a new study in the United States recently found that eating more nuts, especially nuts such as walnuts, almonds, pistachios and other wood nuts, may help reduce the risk of cardiovascular disease in patients with type 2 diabetes The biological mechanism by which nuts benefit the heart is unclear, the researchers said, perhaps because they improve blood sugar control, blood pressure and fat metabolism The study also pointed out that although eating all kinds of nuts can bring benefits to the heart, compared with peanuts, which belong to legumes and have underground fruits, woody nuts such as walnuts, almonds, pistachios, hazelnuts and pine nuts are more relevant to reduce the risk of cardiovascular disease Http://www.xinhuanet.com/world/2019-02/24/c_.htm Lanzhou University of technology dormitory renovation image dump? Recently, some netizens said that Lanzhou University of technology repaired the dormitories without notice, which was like a garbage dump and caused some students' valuables to be lost Subsequently, Lanzhou University of science and technology released a statement through the official microblog, saying that it would identify the responsibility of the winning construction unit and investigate the responsibility of the University for neglecting the supervisors Lanzhou University of science and technology said in the notice that during the winter vacation, some students' apartments were repaired Due to the inadequate implementation of construction organization and supervision responsibilities, the students' property protection was not done well during the construction process, and the cleaning was not done well after the construction, resulting in the poor environment of the dormitory and the loss of some students' property The school sincerely apologized to the relevant students http://www.chinanews.com/sh/2019/02-23/8762551.shtml