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张锋最新论文:蛋白质设计超小型表观遗传编辑器,单个AAV递送,实现体内持久表观基因编辑
生物世界· 2025-05-09 03:55
Core Viewpoint - The research led by Zhang Feng's team presents a novel gene editing tool, NovaIscB, which significantly enhances gene editing efficiency and specificity compared to existing tools, paving the way for advanced applications in gene and epigenetic editing [3][19]. Group 1: Development of NovaIscB - The NovaIscB system was created through evolutionary and structural-guided protein engineering, achieving up to 40% insertion/deletion editing activity in the human genome, which is approximately 100 times more efficient than the wild-type OgeuIscB [3][19]. - The research utilized a combination of natural selection, structural grafting, directed evolution, and RNA engineering to optimize the IscB protein, resulting in a compact system that can be delivered via a single AAV vector [10][14]. Group 2: OMEGAoff System - The NovaIscB was fused with a methyltransferase to create the programmable epigenetic editing system OMEGAoff, which can achieve persistent gene suppression, notably reducing PCSK9 gene expression and cholesterol levels for over six months [3][16]. - The OMEGAoff system demonstrated significant potential for long-lasting gene suppression and epigenetic editing, with no observed toxicity in the tested subjects [16][19]. Group 3: Implications and Future Applications - The study introduces a new framework for optimizing protein functions that extends beyond genome editing, suggesting broad potential applications in various fields [4][19]. - The compact nature of the NovaIscB system allows for easier delivery into cells, addressing a major challenge in the gene editing field [7][8].
基因编辑治疗晚期胃肠道癌显成效
Ke Ji Ri Bao· 2025-05-06 23:27
Core Insights - The research team from the University of Minnesota has achieved a milestone in the treatment of advanced gastrointestinal cancers using CRISPR/Cas9 gene editing technology, confirming the safety and potential efficacy of this therapy [1] Group 1: Clinical Trial Results - The clinical trial involved 12 patients with advanced metastatic cancer, demonstrating good safety with no severe adverse reactions reported [1] - Some patients showed effective disease control, with one patient experiencing complete disappearance of metastatic tumors after several months and maintaining two years without recurrence [1] Group 2: Mechanism and Innovation - The new therapy involves genetic modification of tumor-infiltrating lymphocytes (TILs) to inactivate the CISH gene, allowing for more precise identification and attack on cancer cells [1] - Unlike traditional cancer therapies that require repeated dosing, this gene editing therapy can achieve lasting effects through a one-time modification of T cells [1] Group 3: Future Directions - The research team successfully cultivated and infused over 10 billion engineered TIL cells, validating the feasibility of large-scale clinical-grade cell preparation [2] - Despite promising initial results, the existing processes face challenges such as high costs and complexity, prompting plans to optimize treatment protocols and explore mechanisms of efficacy differences [2]
Cell重磅:贺建奎基因编辑的抗艾滋病CCR5Δ32缺失的前世今生
生物世界· 2025-05-06 04:04
Core Viewpoint - The article discusses the discovery and significance of the CCR5delta32 gene mutation, which provides resistance to HIV-1, and its evolutionary history, implications for gene editing, and potential medical applications [2][4][6]. Group 1: Discovery and Significance of CCR5delta32 - CCR5 was identified as a receptor for HIV-1, and the CCR5delta32 mutation provides natural resistance to the virus, found in about 1% of Caucasians [2][3]. - Timothy Ray Brown, known as the "Berlin Patient," was cured of HIV-1 through a bone marrow transplant from a donor with the CCR5delta32 mutation, highlighting the mutation's therapeutic potential [3][6]. - The mutation's presence in European populations but absence in African and East Asian populations raises questions about its evolutionary origins [4][6]. Group 2: Evolutionary History - Research indicates that the CCR5delta32 mutation originated over 6,700 years ago among nomadic groups in the Siberian steppe, with evidence found in ancient remains [4][8]. - The mutation underwent strong positive selection between 8,000 and 2,000 years ago, coinciding with significant population movements and the spread of pathogens [11][13]. - The study challenges traditional views that linked the mutation's prevalence to historical pandemics, suggesting a more complex evolutionary narrative [6][11]. Group 3: Implications for Gene Editing and Medicine - The CCR5delta32 mutation is associated with various diseases, including Alzheimer's and diabetes, raising concerns about the implications of gene editing targeting this mutation [13]. - The research emphasizes the need for caution in gene editing, as it may disrupt other genetic elements and the complex interactions within the human genome [13]. - Ancient DNA technology offers new avenues for understanding the genetic basis of complex diseases, potentially informing treatments beyond HIV-1 [13].
Verve Therapeutics Touts Positive Data From Gene Editing Medicine To Lower Cholesterol After Single Dose
Benzinga· 2025-04-14 15:34
Verve Therapeutics Inc VERV on Monday released initial data from the Heart-2 Phase 1b trial of VERVE-102 in patients with heterozygous familial hypercholesterolemia (HeFH) and/or premature coronary artery disease (CAD), which requires reducing low-density lipoprotein cholesterol (LDL-C) levels in the blood.VERVE-102 was well-tolerated among 14 participants across three dose levels. No treatment-related serious adverse events (SAEs) and no clinically significant laboratory abnormalities were observed.A singl ...
报名即将截止!全球眼科大会
思宇MedTech· 2025-04-11 03:46
2025首届 全球眼科大会(Global Ophthalmology Conference 2025,简称GOC2025) 将于 4月17日(星期四) 在北京市中关村自主创新示范区展示中心(海淀桥西 北角)隆重举行! 一、大会时间: 2025年4月17日 星期四 9:00-18:00 二、大会地点: 北京市中关村自主创新示范区展示中心会议中心(新建宫门路2号) 三、举办单位: 眼未来、思宇MedTech;中关村联新生物医药产业联盟,北京中关村科学城创新发展有限公司,启迪之星,中关村科学城CGT产业孵化 中心,北京中关村创业大街科技服务有限公司 四、会议规模: 现场参会嘉宾500人 《基因编辑:基因与细胞治疗的前沿探索》 10:00-10:25 魏文胜,北京大学生命科学学院教授,北京大学基因组编辑研 究中心主任;昌平实验室领衔科学家 《神经干细胞移植相关研究技术现状概览》 10:25-10:50 戴宜武,解放军总医院第七医学中心神经外科主任(原八一脑 科医院院长)、正军级教授 大会现场展区,鹰瞳Airdoc AI眼底相机 免费提供AI眼底检查 ,评估 35项 眼部疾病风险, 10项 心脑血管、老年痴呆、糖代谢、 ...
中关村论坛
Hua Xia Shi Bao· 2025-03-31 05:57
Core Viewpoint - The recent forum at the 2025 Zhongguancun Forum highlighted the transformative impact of AI and other advanced technologies on the healthcare industry, emphasizing a shift from efficiency enhancement to value creation in medical innovation [2][3]. Group 1: Technological Drivers - AI, gene editing, and cell therapy are identified as core drivers for the next five years, leading to a disruptive transformation in business models beyond just optimizing R&D processes [3]. - The integration of AI in healthcare has evolved from simple efficiency tools to generative tools, with significant implications for drug development timelines [3]. - The commercialization of AI in pharmaceuticals is approaching a tipping point, transitioning from efficiency improvements to value creation [3]. Group 2: Market Dynamics and Investment Strategies - In a challenging financing environment, companies should focus on cash flow and leverage AI to enhance original R&D models, creating opportunities for mergers and acquisitions [4]. - The domestic advancements in cell and gene therapy, particularly CAR-T and mRNA technologies, are nearing global standards, with supportive policies and faster approval processes boosting confidence in the sector [5]. - The ongoing pressure from cost control policies and centralized procurement is reshaping the industry landscape, favoring leading domestic companies while creating a competitive environment [6]. Group 3: Policy Implications - The continuous push for cost control in healthcare is seen as both a challenge and a mechanism for identifying top-tier companies, with a layered market emerging for innovative products [6]. - The current policy environment provides a window for domestic companies to capture market share through low-cost strategies before entering a phase of intense competition [6]. - Investment in healthcare should aim to enhance accessibility at the grassroots level, with a focus on innovative drugs and medical devices that lower costs and improve efficacy [7]. Group 4: Future Outlook - The next five years will witness a deep synergy between technology, policy adaptation, and capital empowerment in the healthcare sector, characterized by both the clearing of valuation bubbles and intensified competition [7]. - The healthcare industry is undergoing a comprehensive transformation, with each segment from cell therapy to AI pharmaceuticals reshaping industry norms [7]. - Investors must find a dynamic balance in technological insights, policy predictions, and portfolio management to capture growth amidst uncertainty [7].
红杉医疗被投企业多款医疗大模型顺利落地|Healthcare View
红杉汇· 2025-03-27 15:53
Group 1 - Shenzhen People's Hospital, Shukun Technology, and Huawei have formed a deep collaboration to deploy the DeepSeek-R1 model and the "Shukun Kun" multi-modal healthcare model, enhancing the hospital's medical and research capabilities [3] - The platform equipped with DeepSeek and "Shukun Kun" medical models will provide comprehensive research support, enabling rapid construction of multi-modal databases and offering data analysis tools for researchers [5] - The global first peritoneal dialysis model was launched by Shenzhou Medical and Sun Yat-sen University First Affiliated Hospital, utilizing advanced DHC+DeepSeek dual-engine architecture for precise understanding and processing of complex information in the field [7] Group 2 - Yingxi Intelligent has deployed its first bipedal humanoid robot named "Supervisor" in its AI-driven fully automated drug discovery laboratory, aimed at enhancing laboratory operations [10] - The innovative implantable neurostimulation system by Boruikang has passed the review by the National Medical Products Administration, marking a significant advancement in medical technology [12] - The commercial production base for small nucleic acid drugs by Zhaowei Technology has officially commenced operations, featuring advanced equipment and a total designed capacity of 48 production lines [20] Group 3 - Zhengxu Bio's self-developed base editing drug CS-101 has successfully treated a Malaysian patient with beta-thalassemia, marking another significant achievement in gene editing therapy [23] - The OCT intravascular imaging catheter developed by Weiguang Medical has received registration approval for dual indications, enhancing diagnostic efficiency in coronary and carotid artery diseases [26] - The first platelet-related cell new drug XJ-MK-002 has been granted orphan drug designation by the FDA for treating congenital thrombocytopenia, showcasing innovation in rare disease treatment [28] Group 4 - The new generation PI3Kα inhibitor JYP0035 capsule has received approval for clinical trials, aimed at treating PIK3CA mutated, HR-positive, HER2-negative breast cancer, indicating strong R&D capabilities [30] - The first domestically developed antibacterial fishbone suture line has been approved by the NMPA, representing a breakthrough in surgical materials [43] - The flexible ultrasound probe project led by Suzhou Nolaisheng Technology has been approved as a national key research and development project, highlighting advancements in ultrasound technology [39]