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解决胰岛素百年困境!David Baker团队从头设计出更安全有效的“AI胰岛素”,开启糖尿病治疗新时代
生物世界· 2025-10-15 04:33
Core Viewpoint - The article discusses a groundbreaking research on AI-designed insulin receptor agonists that offer improved efficacy and safety for diabetes treatment compared to traditional insulin therapies [3][10]. Group 1: Research Background - Insulin has been a cornerstone in diabetes treatment since its discovery, but it has limitations such as complex production, strict storage conditions, and potential cancer risks [2]. - The insulin receptor acts as a "lock" that insulin "unlocks," initiating two main signaling pathways: one for metabolic regulation (AKT pathway) and another for cell growth (MAPK pathway) [2]. Group 2: Research Findings - Researchers from Washington University and Texas Southwestern Medical Center developed AI-designed insulin receptor agonists that outperform traditional insulin in lowering blood sugar and can precisely regulate signaling pathways, avoiding cancer cell proliferation [3][5]. - The new insulin receptor agonists exhibit remarkable properties, including enhanced thermal stability, remaining stable at 95°C, and precise signal regulation through adjustable linkers [7]. Group 3: Experimental Results - In mouse models, the AI-designed agonist RF-409 demonstrated superior blood sugar-lowering effects, requiring only half the dosage of insulin for the same effect and maintaining low blood sugar levels for up to 6 hours [7][8]. - These agonists can activate mutated insulin receptors in insulin-resistant patients, providing new treatment hope for rare genetic diabetes [8]. Group 4: Implications and Future Directions - The specificity of these agonists allows them to activate normal and mutated insulin receptors while avoiding activation of cancer cell receptors, significantly reducing potential cancer risks associated with traditional insulin therapy [8][10]. - The research lays the groundwork for developing safer and more effective next-generation diabetes treatments, with the founding of Lila Biologics aimed at utilizing AI protein design for breakthrough therapies [10][11].
诺奖得主David Baker最新Nature论文:AI设计蛋白开关,实现对药物的快速精准调控
生物世界· 2025-09-28 08:30
Core Viewpoint - David Baker's team has developed a groundbreaking AI protein design model, RFdiffusion, which allows for the precise control of protein-protein interactions, potentially revolutionizing fields such as cancer treatment and immune regulation [2][3]. Group 1: Research Breakthroughs - The new design method enables precise timing of cytokine signaling, allowing for "remote control" of protein interactions with second-level accuracy [3]. - The research focuses on designing the "excited state" of proteins, which influences the kinetics of protein-protein interactions, rather than just their stable states [7]. - A special "hinge protein" was designed to change conformation in response to external signaling molecules, facilitating rapid dissociation of protein complexes [10]. Group 2: Performance Metrics - The new design method achieves up to a 5700-fold increase in dissociation rates, allowing protein complexes that previously took hours to dissociate to do so in seconds [12]. - Structural analysis confirmed that the designed proteins closely matched theoretical predictions, with a maximum deviation of only 1.3Å [12]. Group 3: Applications - The technology has potential applications in developing rapid biosensors, such as a SARS-CoV-2 sensor with a response time of just 30 seconds, which is 70 times faster than previous sensors [14]. - It can create dynamic control circuits at the protein level, enabling efficient signal transmission and amplification [15]. - The method allows for the rapid shutdown of highly active splitting enzyme systems, providing new tools for metabolic engineering [16]. Group 4: Immunology Insights - The research has significant implications for controlling the interleukin-2 (IL-2) signaling pathway, which is crucial for immune response, allowing for rapid on/off switching of IL-2 analogs [18]. - Different durations of IL-2 stimulation were found to have distinct biological effects, with short stimulation providing anti-apoptotic protection while prolonged stimulation activated metabolic changes and cell division [19][20]. Group 5: Paradigm Shift in Protein Design - This research represents a paradigm shift in protein design, moving from static structure design to dynamic kinetic control, with broad applicability across various protein interactions [22]. - The technology not only serves as a powerful tool for basic biological research but also opens new avenues for therapeutic applications, potentially leading to more precise and controllable biotherapies [22].
上海交大副教授,两年融4轮
3 6 Ke· 2025-09-08 04:22
Company Overview - Wuxi Tushen Zhihuo Artificial Intelligence Technology Co., Ltd. (Tushen Zhihuo) completed a multi-million RMB angel round financing, with participation from Shanghai Angel Association and continued investment from existing shareholder Chengmei Capital [1][3] - Founded in December 2023, Tushen Zhihuo focuses on AI-driven protein design in the biotechnology sector, leveraging advanced AI technology for high-value protein and related product development [2][3] - The company is led by Wang Yuguang, an associate professor at Shanghai Jiao Tong University, with a strong background in AI, applied mathematics, and synthetic biology [2][3] Technology and Innovation - Tushen Zhihuo has developed a scientific intelligence platform for the biopharmaceutical field, enabling automated antibody design and protein expression testing [2][3] - The company has achieved significant advancements in industrial applications, such as improving the affinity of rabbit monoclonal antibodies beyond that of leading European pharmaceutical companies and enhancing enzyme activity by 380% and 800% for specific enzymes [3] Funding and Investment - Tushen Zhihuo has completed four rounds of financing within two years, indicating strong investor confidence and interest in the AI protein design sector [3][5] - Chengmei Capital has been a consistent investor, recognizing the potential of AI technology across various industries and the team's solid technical background [3][5] Industry Landscape - The global protein design market is rapidly evolving, with a focus on the application of AI in drug development, industrial enzyme catalysis, and biomanufacturing [4][5] - Approximately 30 AI protein-related companies are based in China, while 25 are located overseas, with most technologies originating from academic institutions [5][6] - Chinese companies emphasize practical applications and industrial efficiency in AI protein design, contrasting with overseas firms that focus on foundational breakthroughs [6] Challenges and Future Outlook - The AI protein design sector faces challenges such as data quality, model interpretability, and high costs of wet lab validation, which are critical for transitioning from research to commercial applications [6]
Nature:蛋白质设计新革命!AI一次性设计出高效结合蛋白,免费开源、人人可用
生物世界· 2025-08-29 04:29
Core Viewpoint - The article discusses the breakthrough technology BindCraft, which allows for the one-shot design of functional protein binders with a success rate of 10%-100%, significantly improving the efficiency of protein design compared to traditional methods [2][3][5]. Summary by Sections BindCraft Technology - BindCraft is an open-source, automated platform for de novo design of protein binders, achieving high-affinity binders without the need for high-throughput screening or experimental optimization [3][5]. - The technology leverages AlphaFold2's weights to generate protein binders with nanomolar affinity, even in the absence of known binding sites [3][5]. Applications and Results - The research team successfully designed binders targeting challenging targets such as cell surface receptors, common allergens, de novo proteins, and multi-domain nucleases like CRISPR-Cas9 [3][7]. - Specific applications include: 1. Designing antibody drugs targeting therapeutic cell surface receptors like PD-1 and PD-L1, achieving nanomolar affinity without extensive design and screening [7]. 2. Blocking allergens, with a designed binder for birch pollen allergen Bet v1 showing a 50% reduction in IgE binding in patient serum tests [7][8]. 3. Regulating CRISPR gene editing by designing a new inhibitory protein that significantly reduces Cas9's gene editing activity in HEK293 cells [8]. 4. Neutralizing deadly bacterial toxins, with a designed protein completely eliminating cell death caused by the toxin from Clostridium perfringens [8]. 5. Modifying AAV for targeted gene delivery by integrating mini-binders that specifically target HER2 and PD-L1 expressing cancer cells [8]. Impact and Future Potential - BindCraft addresses long-standing success rate bottlenecks in protein design and offers direct solutions for allergy treatment, gene editing safety, toxin neutralization, and targeted gene therapy [9]. - The open-source nature of the technology allows ordinary laboratories to design custom proteins, potentially reshaping drug development, disease diagnosis, and biotechnology [9].
不用抗生素也能抗菌!AI设计新型蛋白质抵御细菌耐药性|Nature子刊
量子位· 2025-07-14 07:01
Core Insights - The article discusses a groundbreaking study that utilizes AI to design proteins that can effectively inhibit the growth of antibiotic-resistant bacteria like E. coli by blocking their access to essential nutrients [1][29]. Group 1: AI-Driven Protein Design - Researchers have successfully designed proteins that bind to the ChuA protein in E. coli, acting as "gatekeepers" to prevent the bacteria from extracting heme from hemoglobin [3][22]. - The AI-driven protein design platform is the first of its kind in Australia, modeled after Nobel laureate David Baker's work, and is accessible for free to global scientists [7][8]. - The study highlights a rapid design process using AI algorithms, completing tasks that traditionally took months or years in a significantly shorter timeframe [19][24]. Group 2: Mechanism of Action - The study reveals that iron is a critical nutrient for the growth of bacteria, and during infections, the host employs a mechanism called "nutritional immunity" to sequester free iron [10][11]. - E. coli and Shigella utilize the ChuA protein to "steal" heme from hemoglobin, which is essential for their growth [12][15]. - The designed proteins specifically inhibit the interaction between ChuA and hemoglobin, effectively starving the bacteria of the necessary nutrients [22][28]. Group 3: Efficacy and Specificity - Among the AI-designed proteins, one inhibitor (G7) demonstrated an IC50 value of 42.5 nM, indicating its potency comparable to traditional antibiotics [21]. - The designed proteins exhibit exceptional specificity, only inhibiting the extraction of heme from hemoglobin without affecting the transport of free heme [25][26]. - This innovative approach represents a new paradigm in antibacterial strategies, focusing on nutrient deprivation rather than direct bacterial killing [27][28]. Group 4: Broader Implications - The advancements in AI-driven protein synthesis are expected to reshape the drug development landscape, enabling customized treatment solutions [37]. - The study emphasizes the potential of AI to revolutionize the field of antibiotic research by significantly reducing the risk of antibiotic resistance through novel mechanisms [29][31].
人工合成酶效率飙升100倍!生物制造或迎技术革命
Core Viewpoint - Israeli scientists from the Weizmann Institute have developed a new computer algorithm based on enzyme principles to design highly efficient synthetic enzymes, achieving 100 times the efficiency of AI-designed enzymes, marking a new phase in "on-demand" enzyme customization [1][2]. Group 1: Algorithm Development - Traditional computer algorithms for enzyme design are often inefficient and require extensive laboratory optimization [2]. - The research team utilized "Kemp elimination" as a case study, collecting natural enzyme data and decomposing protein sequences into fragments, which were then recombined to identify the optimal chemical "skeleton" [2]. - The algorithm challenged the traditional belief that enzyme active sites require cyclic amino acids, showing that non-cyclic structures can be more efficient, significantly enhancing catalytic efficiency [2][3]. Group 2: Synthetic Enzyme Characteristics - The resulting synthetic enzyme differs from natural enzymes by over 140 amino acid sequences but demonstrates comparable catalytic efficiency [3]. - The current synthetic protein structure remains simpler than natural enzymes, with future research focusing on complex multi-step reactions, such as those catalyzed by the key photosynthetic enzyme rubisco [3]. Group 3: Future Directions - While AI protein design has been prevalent over the past decade, it primarily mimics existing enzymes; the new algorithm constructs enzymes based on physical principles [3]. - The research team acknowledges that AI is irreplaceable for certain protein designs but struggles with complex catalytic reactions, suggesting a need for complementary approaches to achieve optimal enzyme designs [3]. Group 4: Upcoming Events - The 4th Synthetic Biology and Green Bio-Manufacturing Conference (SynBioCon 2025) will be held from August 20-22 in Ningbo, Zhejiang, focusing on the intersection of AI and biological manufacturing, along with four application areas: green chemicals and new materials, future food, future agriculture, and beauty raw materials [5].
从大脑到心脏,红杉医疗成员企业收获多项成果|Healthcare View
红杉汇· 2025-06-26 07:22
Group 1 - The article discusses the first real theater-based neuroaesthetic experiment in China, conducted at Tsinghua University, where eight volunteers wore portable EEG devices while watching a dance performance to capture their neural activity in real-time [3][6]. - The NeuroHUB platform, developed by Boruikang, is highlighted for its ability to achieve millisecond-level synchronization of EEG and physiological signals in a real-world setting, marking a significant advancement in neuroaesthetic research [5][6]. - The experiment demonstrated that audience engagement significantly increases brain activity, revealing the neural connections between emotional responses and artistic experiences [6][7]. Group 2 - NeuroHUB showcases three core advantages: wireless freedom allowing natural seating in the theater, group super-scanning enabling real-time dialogue among multiple brains, and robust interference resistance against complex electromagnetic environments [7][9]. - The platform's modular design and wireless data transmission ensure a seamless experience for participants, maintaining the purity of the artistic experience during the performance [7]. - NeuroHUB's capability to synchronize data from over ten participants simultaneously represents a breakthrough in overcoming the limitations of traditional laboratory settings [8]. Group 3 - The article also mentions advancements in medical technology, including a new integrated solution for coronary function and imaging assessments approved for market release, which combines multiple evaluation metrics for enhanced surgical decision-making [11][12]. - The development of a fully magnetic levitation artificial heart by Xinxin Medical has been recognized as one of the top ten technological advancements in Jiangsu Province, showcasing significant progress in heart failure treatment [13][15]. - The iPSC-derived CAR-NK cell therapy developed by Qihan Biotech has achieved notable clinical results in treating refractory systemic sclerosis, marking a significant milestone in autoimmune disease treatment [16][17]. Group 4 - The article highlights the introduction of two first-in-class drugs by Dige Pharmaceutical, which will be presented at major international conferences, indicating ongoing innovation in the hematology sector [21]. - The J-VALVE TF system's 12-month clinical follow-up results demonstrate superior performance compared to similar products, emphasizing the potential of Chinese-developed medical devices on the international stage [22][24]. - The article concludes with advancements in AI-driven enzyme design and biodegradable medical devices, showcasing the ongoing evolution and innovation within the healthcare and biotechnology industries [25][35].
为千亿酶缺口定制生物钥匙!中国团队首创AI零样本酶设计方法
Huan Qiu Wang· 2025-06-18 02:16
Core Insights - The recent breakthrough in AI enzyme design by MoleculeMind and Hong Kong Polytechnic University has been recognized at the ICML 2025 conference, marking a significant advancement in the field of AI enzyme design [1] - The traditional methods of enzyme discovery and optimization are time-consuming and costly, with a success rate of less than 1%, highlighting the urgent need for innovative solutions in the biomanufacturing sector [2] - The introduction of the SENZ method, which utilizes substrate structure similarity for enzyme design, represents a novel approach that could revolutionize enzyme generation [3][5] Industry Overview - Enzymes are crucial for the development of the trillion-dollar bio-economy, impacting sectors such as biomedicine, green chemistry, and environmental degradation [1] - The lack of ideal biocatalysts is a major barrier to scaling production in the biomanufacturing industry, leading to annual capacity losses exceeding $100 billion in pharmaceuticals, chemicals, and agriculture [2] - AI protein design has emerged as a promising solution to generate precise catalysts by learning from existing enzyme structure-function relationships, although it faces challenges with novel synthetic molecules due to limited training data [2] Company Developments - MoleculeMind has developed the SENZ method, which integrates biological data retrieval and generative AI to create enzymes without direct catalytic data, thus addressing a critical challenge in enzyme generation [3][5] - The SENZ method has demonstrated superior performance compared to traditional enzyme design methods, potentially providing tailored solutions for complex drug synthesis and environmental remediation [6] - MoleculeMind is expanding its capabilities in "on-demand design" across various fields, including antibodies, vaccines, and industrial enzymes, aiming to provide innovative biological solutions for health, environmental, and sustainability challenges [7]