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Cell子刊:复旦大学章真/华国强利用类器官预测直肠癌患者对放化疗的响应
生物世界· 2025-10-09 04:05
Core Viewpoint - The study demonstrates that patient-derived cancer organoids (PDCO) can accurately predict the response of locally advanced rectal cancer (LARC) to chemoradiation, supporting the use of Irinotecan as a candidate for neoadjuvant therapy in LARC patients [2][4][7]. Group 1 - The research established a biobank of rectal cancer organoids (RCO) from LARC patient samples, confirming that PDCO can predict LARC responses to chemoradiation [4][7]. - The accuracy of predicting clinical outcomes using organoids was found to be 92.50% in the discovery cohort and 93.75% in the validation cohort, indicating a high predictive capability [4][7]. - The study highlighted the importance of the timing of organoid survival data collection, which significantly affects the correlation between organoid treatment responses and patient clinical outcomes [4][7]. Group 2 - The organoids exhibited both synergistic (3.91%) and antagonistic (4.69%) effects in response to combined treatment, showcasing the complexity of treatment interactions [4][7]. - Irinotecan, a topoisomerase I inhibitor, was identified as a candidate drug for neoadjuvant therapy in LARC patients, emphasizing its role in inducing apoptosis in tumor cells [4][7]. - The systematic analysis of rectal cancer organoid responses to chemoradiation may significantly influence the broader application of organoid technology in precision cancer treatment [8].
内蒙古大学×同济大学合作发表Nature Biotechnology论文:突破牛羊基因编辑育种瓶颈
生物世界· 2025-10-09 04:05
Core Insights - The article discusses a groundbreaking research study that successfully established haploid embryonic stem cells (haESC) in cattle and sheep, overcoming previous limitations in breeding these ruminants [3][4][5] - The study introduces a novel breeding strategy combining haESC, spermatid-like modifications, and non-integrative prime editing (ePE), leading to significant advancements in genetic editing of livestock [3][9] Group 1: Research Breakthroughs - The research team successfully created haploid embryonic stem cell lines from cattle and sheep, which exhibit pluripotent characteristics and can differentiate into three germ layers [4] - The innovative "Pro-iCHI" technique, which involves injecting haESC into oocytes, significantly improved the full-term development rate of embryos [4][5] - The study achieved a 100% editing efficiency for the MSTN gene, which is known to inhibit muscle growth, leading to a potential increase in muscle mass of 20%-30% in cattle and sheep [5][6] Group 2: Implications for Livestock Breeding - Traditional methods for gene editing in livestock resulted in a low birth rate of less than 5%, but the new Pro-iCHI technique combined with ePE achieved a birth rate of 13.3% for genetically edited animals [5] - The research opens new pathways for efficient breeding of genetically modified livestock, potentially transforming the agricultural industry [9] - The findings were highlighted in a related article in Nature Biotechnology, emphasizing the potential for rapid generation of genome-edited farm animals from haploid stem cells [6]
复旦大学发表最新Nature论文
生物世界· 2025-10-09 00:00
Core Insights - The article discusses the advancements in two-dimensional (2D) materials and their integration into electronic devices, particularly in the semiconductor industry, highlighting the development of a fully functional 2D flash chip by a research team from Fudan University [3][4]. Group 1: Research Achievements - The research team led by Professor Zhou Peng and researcher Liu Chunsen published a paper in Nature on October 8, 2025, detailing the world's first 2D-silicon-based hybrid architecture chip, which addresses key challenges in engineering new 2D information devices [3]. - The team developed a fully functional 2D NOR flash memory chip using the ATOM2CHIP technology, achieving a high yield of 94.34% through a comprehensive on-chip process that integrates various architectural designs [4]. - The research also includes the development of a sub-nanosecond flash memory device, "PoX," which can achieve an erasure speed of 400 picoseconds, breaking existing speed limits in storage technology [7]. Group 2: Technological Innovations - The ATOM2CHIP technology provides a complete framework for bridging the gap between emerging device concepts and practical chip applications, incorporating a full-stack on-chip process and cross-platform system design [4]. - The research team successfully created the first 32-bit RISC-V microprocessor prototype based on 2D semiconductor materials, capable of performing up to 4.2 billion arithmetic operations and supporting a program of up to 1 billion instructions [9].
诺贝尔生理学或医学奖得主、克隆之父 John Gurdon 去世
生物世界· 2025-10-08 12:49
Core Insights - Sir John Gurdon, known as the "father of cloning," passed away on October 7, 2025, at the age of 92 [2] - Gurdon's pioneering research in nuclear transfer addressed fundamental questions in biology regarding the retention or loss of genetic information during development [4] - His work laid the groundwork for significant breakthroughs in biomedical fields, including stem cell biology, mouse genetics, cloning technology, and in vitro fertilization [4] Background and Achievements - Born on October 2, 1933, in Hampshire, England, Gurdon faced academic challenges early in life, particularly in biology, but persevered to earn a PhD from Oxford University in 1957 [8] - He demonstrated that mature cells could be reprogrammed to an embryonic stem cell state, disproving the long-held belief that specialized cells could not revert to an immature state [8] - In 1962, Gurdon successfully replaced the nucleus of a fertilized egg from an African clawed frog with a nucleus from a tadpole's intestinal cell, resulting in a new, fertile frog, proving that mature cells contain complete genetic information necessary for all cell types [8]
2025年诺贝尔化学奖揭晓!三位科学家因对金属有机框架的发展获奖
生物世界· 2025-10-08 09:52
Core Points - The 2025 Nobel Prize in Chemistry was awarded to Susumu Kitagawa, Richard Robson, and Omar Yaghi [4] - The 2025 Nobel Prizes in the three scientific categories have been announced, with the Nobel Prize in Physiology or Medicine awarded to Mary Brunkow, Fred Ramsdell, and 坂口志文 for their discoveries in peripheral immune tolerance [6] Group 1: Historical Context - The Nobel Prize in Chemistry has been awarded 116 times since its inception in 1901, with Jacobus van 't Hoff being the first recipient for his work on chemical kinetics and osmotic pressure [3] - John Goodenough is noted as the oldest laureate at 97 years old when he received the award in 2019 for his research on lithium batteries, while Frédéric Joliot was the youngest at 35 years old when he won in 1935 for synthesizing new radioactive elements [3] Group 2: Notable Achievements - The Nobel Prize website highlights three significant achievements in chemistry that have changed human life: - The mapping of molecular structures by Dorothy Crowfoot Hodgkin, which facilitated the production of penicillin, awarded in 1964 [11] - The discovery of how plants convert carbon dioxide into carbohydrates by Melvin Calvin, awarded in 1961 [11] - The directed evolution of enzymes by Frances Arnold, which has applications in environmentally friendly chemical manufacturing, awarded in 2018 [12] Group 3: Recent Winners - The Nobel Prize in Chemistry for 2024 was awarded to David Baker, Demis Hassabis, and John Jumper for their contributions to protein design and structure prediction [16] - The 2023 Nobel Prize in Chemistry was awarded to Moungi G. Bawendi, Louis E. Brus, and Aleksey Yekimov for their discovery and synthesis of quantum dots [17] - The 2021 Nobel Prize in Chemistry was awarded to Benjamin List and David W.C. MacMillan for their development of asymmetric organic catalysis [20] - The 2020 Nobel Prize in Chemistry was awarded to Emmanuelle Charpentier and Jennifer A. Doudna for their development of a genome editing method [23] - The 2019 Nobel Prize in Chemistry was awarded to John B. Goodenough, M. Stanley Whittingham, and 吉野彰 for their development of lithium-ion batteries [26] - The 2018 Nobel Prize in Chemistry was awarded to Frances H. Arnold, George P. Smith, and Sir Gregory P. Winter for their contributions to enzyme directed evolution and phage display technology [28]
Cell Discovery:复旦大学詹成/范虹等提出基于铁死亡的肺癌治疗新策略
生物世界· 2025-10-08 04:04
Core Insights - Lung cancer is a leading cause of cancer-related deaths globally, with non-small cell lung cancer (NSCLC) accounting for approximately 85% of cases, and lung adenocarcinoma (LUAD) being the most common subtype. The five-year survival rate for lung adenocarcinoma patients is below 26% [2] - The study published in Cell Discovery reveals that ferroptosis-induced SUMO2 lactylation counteracts ferroptosis by enhancing the degradation of ACSL4 in lung adenocarcinoma, identifying a key regulatory factor in the resistance to ferroptosis and proposing a new strategy for cancer treatment based on ferroptosis [3][8] Group 1: Ferroptosis and Cancer Treatment - Ferroptosis is a regulated form of cell death characterized by the accumulation of reactive oxygen species (ROS), lipid peroxides, and increased levels of divalent iron (Fe2+), showing significant effectiveness in overcoming resistance to traditional cancer therapies [5] - The study indicates that ferroptosis significantly increases lactate accumulation and subsequent protein lactylation, which contributes to the resistance of lung adenocarcinoma cells to ferroptosis [6] Group 2: Key Findings of the Research - SUMO2-K11 lactylation is identified as a critical factor determining the resistance to ferroptosis in lung adenocarcinoma, as it weakens the interaction between SUMO2 and ACSL4, promoting ACSL4 degradation and disrupting lipid metabolism [6][8] - AARS1 is recognized as the lactylation transferase for SUMO2-K11la, while HDAC1 acts as the de-lactylase. The research team developed a cell-penetrating peptide that specifically inhibits SUMO2-K11la, enhancing ferroptosis and increasing the sensitivity of lung adenocarcinoma to the chemotherapy drug cisplatin [6][8]
Nature子刊:压力下的头发变白,竟会预防癌症发生
生物世界· 2025-10-08 04:04
Core Insights - The article discusses the profound impact of the exposome on health, particularly how aging and cancer are interconnected through a protective program called senescence-coupled differentiation [3][6] - A recent study from Tokyo University published in Nature Cell Biology reveals that melanocyte stem cells (McSC) can either age and lead to hair greying or bypass this process and develop melanoma, depending on the type of genetic damage they experience [3][6] Group 1: Research Findings - The study identifies a protective mechanism where McSC undergo senescence-coupled differentiation in response to DNA double-strand breaks, leading to selective depletion of these stem cells and resulting in hair greying while preventing melanoma formation [6] - Conversely, carcinogens can inhibit this protective differentiation by activating arachidonic acid metabolism and KIT ligand from the microenvironment, promoting self-renewal of McSC and leading to melanoma [6] Group 2: Mechanisms of Action - The fate of individual stem cell clones—whether to amplify or deplete—is regulated through interactions with their microenvironment, which collectively influences the manifestation of aging phenotypes in a cumulative and antagonistic manner [7]
Nature子刊:王金勇/竺晓凡团队实现从脐带血大规模制备iNK和CAR-iNK细胞,用于癌症免疫治疗
生物世界· 2025-10-08 04:04
Core Viewpoint - The article discusses a significant advancement in the field of immunotherapy, specifically the large-scale generation of CAR-NK cells from CD34+ hematopoietic stem and progenitor cells, which presents a promising alternative to CAR-T cell therapy for cancer treatment [3][9]. Group 1: Research Findings - The research team developed a three-step strategy to generate high yields of iNK and CAR-iNK cells from human umbilical cord blood-derived CD34+ HSPCs, producing between 14 million to 83 million mature iNK cells or 7 million to 32 million CAR-iNK cells from a single unit of cord blood [6][7]. - The generated cells exhibit high levels of CD16 and CAR expression, with no detectable T cell contamination, enhancing their safety and efficacy for cancer treatment [8]. Group 2: Advantages of the Method - The method allows for a significant increase in cell yield compared to traditional methods, addressing the bottleneck of NK cell expansion and enabling multiple high-dose CAR-NK cell clinical treatments [7]. - The high-quality cells produced demonstrate strong anti-tumor activity against various human cancer cells and significantly extend the survival of cancer-bearing mouse models [8]. - The cost-effective CAR gene engineering step reduces overall treatment costs, enhancing the clinical applicability of this therapy [8]. Group 3: Implications for Future Therapy - This technology provides a new candidate for adoptive cell therapy, successfully addressing the core challenges of large-scale production and cost control in CAR-NK cell therapy, indicating a potential for broader application in cancer treatment [9]. - The establishment of a "super cell factory" allows for low-cost, high-quality, and potent CAR-iNK cells to be produced from a single unit of cord blood, which can be stored and transported for cancer patient treatment [9].
2025年诺贝尔物理学奖揭晓!三位美国科学家获奖
生物世界· 2025-10-07 09:53
Core Viewpoint - The 2025 Nobel Prize in Physics was awarded to three American scientists: John Clarke, Michel Devoret, and John Martinis for their discoveries related to macroscopic quantum tunneling effects and energy quantization in circuits [2][4]. Recent Nobel Prize Winners in Physics - In 2024, John J. Hopfield and Geoffrey E. Hinton were recognized for their foundational discoveries and inventions in machine learning using artificial neural networks [7]. - In 2023, Pierre Agostini, Ferenc Krausz, and Anne L'Huillier were awarded for their contributions to generating attosecond light pulses to study electron dynamics in matter [11]. - The 2022 prize went to Alain Aspect, John F. Clauser, and Anton Zeilinger for their work on entangled photons and quantum information science [14]. - In 2021, Syukuro Manabe, Klaus Hasselmann, and Giorgio Parisi were honored for their pioneering contributions to understanding complex physical systems [15]. - The 2020 prize was split between Roger Penrose for proving black hole formation and Reinhard Genzel and Andrea Ghez for discovering supermassive dense objects at the center of the Milky Way [18]. Notable Chinese Nobel Prize Winners in Physics - In 1956, Chen-Ning Yang and Tsung-Dao Lee were awarded for their proposal of parity violation [22]. - In 1976, Samuel Ting received the prize for discovering the J particle [23]. - In 1997, Steven Chu was recognized for his invention of methods for cooling and trapping atoms with lasers [24]. - In 1998, Robert C. Richardson was awarded for explaining the phenomenon of electronic quantum fluids [25]. - In 2009, Charles K. Kao was honored for breakthroughs in optical communication through fiber optics [26].
Nature:AI能够独立做出诺奖级发现吗?
生物世界· 2025-10-07 04:30
Core Insights - The unprecedented awarding of the Nobel Prizes in Physics and Chemistry to scientists in the AI field in 2024 highlights the rapid advancements AI models have made in scientific research, with predictions that AI could independently make Nobel-worthy discoveries by 2030 [2][5][6] - The "Nobel Turing Challenge" initiated by Sony AI's CEO aims for AI systems to achieve discoveries comparable to top human researchers by 2050, although current AI models still require significant human intervention [4][10] - While AI has shown potential in assisting scientific research, there are concerns about its limitations and the risks of over-reliance on AI in the scientific process, which could lead to a decrease in innovation and opportunities for young scientists [9][10] Group 1: AI's Role in Scientific Discovery - AI models have made breakthroughs in analyzing experimental data, designing experiments, and proposing new scientific hypotheses, leading to speculation about AI's future capabilities [2][5] - The 2024 Nobel Prizes awarded to pioneers in machine learning and AI applications in protein structure prediction signify the growing intersection of AI and scientific achievement [5][6] - AI tools are increasingly being used in various stages of scientific discovery, from data analysis to experimental design, showcasing their potential as collaborators in research [6][7] Group 2: Challenges and Limitations of AI - Current AI systems are primarily trained on existing human knowledge and may struggle to generate novel insights, necessitating significant changes in AI development and funding [4][9] - Despite some successes, AI's ability to autonomously conduct complete research projects remains limited, with a drastic drop in success rates when attempting to generate ideas and execute experiments [8][9] - The lack of real-world experience in AI systems hinders their ability to propose innovative questions or provide new insights, emphasizing the importance of human involvement in scientific inquiry [9][10] Group 3: Future Directions and Considerations - Developing AI systems capable of making Nobel-level discoveries requires advancements in their reasoning capabilities, allowing them to evaluate and adjust their own thought processes [10] - There is a debate within the scientific community regarding the implications of relying heavily on AI for discoveries, with concerns about potential negative impacts on research diversity and opportunities for emerging scientists [10]