中国空间站完成空间生命科学在轨实验任务 还刷新一项新纪录

Group 1 - The Tianzhou-9 cargo spacecraft successfully delivered 23 scientific experiment materials to the Chinese space station, with ongoing experiments showing positive progress, particularly in space life sciences [1][11] - Recent experiments in microgravity have revealed that brain cells move faster in space, while muscle repair processes slow down, and the treatment effects of lipid metabolism disease drugs are significantly improved, potentially opening new avenues for Alzheimer's disease treatment and drug development [2][10] Group 2 - Three space life science experiments were conducted to explore the effects of microgravity on brain organoid structure and function, the migration behavior of skeletal muscle precursor cells, and the transport mechanisms of nucleic acid lipid nanoparticles within cells, enhancing understanding of physiological and pathological processes [4][17] - Observations indicate that neurons in organ-on-a-chip experiments move faster in space, suggesting that the unique environment may promote cell movement and maturation, offering new treatment strategies for neurodegenerative diseases [6][15] Group 3 - The experiments also found that skeletal muscle precursor cell migration slows down in microgravity, delaying muscle regeneration, which could hinder muscle repair [8] - The study of nucleic acid lipid carriers in microgravity showed increased cellular uptake efficiency of nucleic acid drugs and a rapid decrease in disease-related protein expression, indicating potential advantages for space applications [8][10] Group 4 - The samples from the completed experiments are currently stored in a low-temperature storage cabinet and are expected to return to Earth with a crewed spacecraft for further research [11][15] - The Chinese space station has conducted a total of 58 scientific and application projects this year, achieving significant advancements, including a record-setting experiment that heated tungsten alloy to over 3100 degrees Celsius [18][24] Group 5 - The tungsten alloy experiment, conducted by a research team from Northwestern Polytechnical University, utilized microgravity conditions to achieve a uniform state of the alloy, which is beneficial for enhancing material properties [20][22] - The successful heating of tungsten alloy to such high temperatures not only validates the performance of China's self-designed space materials science experiment cabinet but also provides valuable data for the development of new tungsten alloys and their applications in extreme environments [24][26]