12月15日《自然通讯》发文，剂泰科技MTS-105这款mRNA编码药物，在肝细胞癌小鼠模型中低剂量即 可清除肿瘤并可防止复发。通过靶向递送技术在肿瘤局部释放T细胞衔接器，借助AI纳米递送平台提升 效率，这款创新疗法已获美国FDA孤儿药资格认定，有望成为全球首款mRNA编码T细胞连接器 （TCE）实体瘤疗法。 （文章来源：科技日报） ...

撰文丨王聪 编辑丨王多鱼 排版丨水成文 代谢功能障碍相关脂肪性肝病 （MAFLD） 是 肝细胞癌 （HCC） 的主要诱因，由于代谢压力导致的 异常 免疫微环境 ，其治疗颇具挑战性。然而，目前尚无针对 MAFLD 肝脏微环境重塑的有效药物疗法。 近日，清华大学 喻国灿 团队联合 浙江大学医学院附属第一医院 章琦 团队，在 Science 子刊 Science Translational Medicine 上发表了 题为： Metabolism-programming mRNA-lipid nanoparticles remodel the immune microenvironment to improve immunotherapy against MAFLD 的研究论文。 该研究开发了一种维生素 E 功能化的 LNP—— Def-LNP ，用于递送编码 T 细胞蛋白酪氨酸磷酸酶 （TCPTP） 的 mRNA，以重新编程肝脏 STAT 信号转导，同时不刺激氧化应激。在多个哺乳动物临床前 模型中，使用 Def-LNP 递送 TCPTP mRNA 改善了脂肪性肝炎和代谢及免疫平衡，并减少了肝细胞癌的 进展。 这项 ...

Core Viewpoint - Cloud-based innovative pharmaceutical company, CloudTop New Medicine (1952.HK), has initiated the first patient dosing of its universal on-demand tumor therapeutic vaccine EVM14 in a global multi-center Phase I clinical trial, marking a significant milestone in clinical development and showcasing the company's strong capabilities in global clinical development [1][2]. Group 1: EVM14 Development and Clinical Trials - EVM14 is an mRNA-based tumor therapeutic vaccine targeting five tumor-associated antigens (TAA) and is intended for treating various squamous cell carcinomas, including non-small cell lung squamous carcinoma (sq-NSCLC) and head and neck squamous cell carcinoma (HNSCC) [2]. - The vaccine has received IND approval from both the U.S. FDA and China's NMPA, making it the first mRNA tumor therapeutic vaccine from CloudTop to achieve dual approval [2]. - The Phase I clinical trial design includes both EVM14 monotherapy and EVM14 in combination with PD-1 monoclonal antibodies, focusing on safety, tolerability, and efficacy [3]. Group 2: Clinical Research and Efficacy - Preclinical studies have shown that EVM14 induces dose-dependent antigen-specific immune responses and significantly inhibits tumor growth in various mouse models, demonstrating its potential to reduce tumor recurrence [3]. - The preclinical research also indicates that EVM14 can enhance anti-tumor activity when used in combination with immune checkpoint inhibitors (ICI), supporting further exploration of combination therapies in clinical settings [3]. Group 3: Market Potential and Competitive Advantage - EVM14 offers advantages such as no need for HLA screening, on-demand supply, lower production costs, and applicability to multiple tumor types, indicating a broad market potential [4]. - The global mRNA therapy market is projected to grow from $12.31 billion in 2025 to approximately $45.04 billion by 2034, with a compound annual growth rate (CAGR) of 15.5% from 2025 to 2034 [4]. - CloudTop has established a comprehensive mRNA technology platform, covering antigen design, sequence optimization, delivery systems, and large-scale production, positioning itself as a core competitor in the mRNA field [5].

Core Insights - Arcturus Therapeutics Holdings Inc. reported interim results from its Phase 2 trial of ARCT-032, an inhaled mRNA therapy for cystic fibrosis, leading to a decline in stock price by 56.30% to $10.12 [8] Group 1: Trial Results - The second cohort of the Phase 2 trial involved six Class I CF adults receiving daily doses of 10 mg ARCT-032 for 28 days, with the treatment being generally safe and well-tolerated [1] - Initial analysis of FEV₁ values from Day 1 to Day 28 did not show meaningful improvement [4] - A post hoc exploratory analysis indicated improvements in lung function for four out of six participants, with an average absolute increase of 3.8% and a relative increase of 5.1% in percent predicted FEV₁ (ppFEV₁) [5] Group 2: Safety and Efficacy - Treatment-related adverse events (AEs) were observed in the Phase 1 study but ceased with continued dosing, and a serious adverse event (SAE) was not deemed related to ARCT-032 [2] - High-resolution computed tomography (HRCT) scans showed reductions in mucus burden in four Class I CF participants, indicating therapeutic activity of ARCT-032 [6] - The ongoing third cohort aims to assess dose escalation at 15 mg and further evaluate safety and tolerability [3] Group 3: Future Directions - Data from the second cohort and ongoing third cohort will inform future studies, including a planned 12-week safety and preliminary efficacy trial set to begin in the first half of 2026 [7] - Analysts suggest that the efficacy of ARCT-032 may improve with longer treatment duration or higher doses, aiming to reduce data variability [8]

Core Viewpoint - The study highlights the critical role of Anxa1 protein in the efferocytosis of macrophages during acute pancreatitis and presents a novel mRNA therapy using nanoliposomes to alleviate the condition by suppressing the STING pathway and promoting efferocytosis [2][8]. Group 1: Acute Pancreatitis Mechanism - Acute pancreatitis (AP) is characterized by necrotic cell death of acinar cells, leading to pancreatic necrosis and the release of damage-associated molecular patterns, pro-inflammatory mediators, and chemokines [5]. - During the acute phase of AP, macrophages rapidly clear apoptotic cells through a process known as efferocytosis, which prevents inappropriate inflammatory responses [5]. - Anxa1 protein plays a significant role in efferocytosis by binding to phosphatidylserine on the surface of apoptotic cells in a calcium-dependent manner, facilitating macrophage phagocytosis [5][6]. Group 2: mRNA Therapy Development - Recent years have seen mRNA-based therapies emerge as a treatment strategy, but their clinical application has been limited due to poor mRNA stability [5]. - Researchers have utilized nanocarriers to enhance the stability and targeting capability of mRNA, with nanoliposomes being used for the delivery of siRNA and mRNA [5]. - The study confirms that the absence of Anxa1 protein eliminates the efferocytosis of pancreatic macrophages, leading to the accumulation and necrosis of apoptotic acinar cells [6]. Group 3: Research Findings - The research team demonstrated that Anxa1 mRNA-loaded nanoliposomes can restore macrophage efferocytosis by inhibiting the cGAMP-cGAS-STING pathway, thereby alleviating the pathological condition of acute pancreatitis [6]. - This study reveals the potential therapeutic value of Anxa1 in the context of acute pancreatitis and showcases a novel nanotechnology approach for treatment [8].

Core Viewpoint - The research identifies a novel ionizable lipid, C-a16, which reduces immunogenicity and enhances mRNA delivery efficiency, providing a promising avenue for mRNA therapies and vaccines [3][5][8]. Group 1: Research Findings - The study published in Nature Biomedical Engineering highlights the development of C-a16, an antioxidant ionizable lipid that shows significantly reduced immunogenicity [3][5]. - C-a16, when incorporated into lipid nanoparticles (LNP) for mRNA delivery, decreases the generation of reactive oxygen species (ROS), thereby prolonging protein expression duration [7][8]. - In vivo experiments demonstrated that C-a16-LNP significantly improved gene editing efficiency by 2.8 times and increased protein expression levels by 3.6 times compared to commercial LNPs [7]. Group 2: Implications for mRNA Therapy - The findings suggest that C-a16 could enhance the therapeutic applications of mRNA by inducing stronger antigen-specific immune responses when delivering mRNA encoding tumor neoantigens or SARS-CoV-2 spike protein [7][8]. - The research indicates a potential shift in mRNA delivery systems, focusing on reducing immunogenicity while improving efficacy, which is crucial for the success of mRNA-based therapies and vaccines [3][8].

Core Viewpoint - The article discusses the advancements in mRNA therapies, particularly focusing on the development of non-inflammatory lipid nanoparticles (NIF-LNP) to enhance the delivery and efficacy of mRNA treatments for chronic lung injuries [1][2][9]. Group 1: mRNA Therapy and Challenges - mRNA therapies have revolutionized the treatment of various diseases, but the use of lipid nanoparticles (LNP) is limited due to systemic inflammatory responses and side effects [1][5]. - Therapeutic mRNA requires significantly higher protein levels (up to 1000 times) compared to preventive mRNA vaccines, which may lead to increased reactogenicity and reduced transfection efficiency [1]. Group 2: Research Development - A study published in Nature Communications introduced a novel non-inflammatory lipid nanoparticle (NIF-LNP) that activates V-ATPase to enhance RNA nanotherapeutics for chronic lung injury [2][3]. - The NIF-LNP formulation, incorporating ursolic acid, demonstrated a 40-fold increase in protein expression in the lungs compared to traditional LNPs without significant reactogenicity [5]. Group 3: Mechanism and Clinical Application - The study revealed that ursolic acid activates the V-ATPase complex, promoting endosomal acidification and enhancing mRNA cytoplasmic release while maintaining endosomal stability [6]. - A lyophilized formulation of NIF-LNP was developed, showing good aerosolization and stability for over 90 days, with effective mRNA transfection in preclinical models [7].

Core Viewpoint - The company, Ginkgo Bioworks, is balancing operational sustainability with future growth through a dual strategy of "licensing in + independent research and development" to drive innovation and revenue generation [1][2]. Group 1: Business Strategy - Ginkgo Bioworks has achieved stable cash flow through the introduction of large commercial products while focusing on cutting-edge mRNA therapies, resulting in the development of key products such as EVM14, EVM16, and CAR-T [1][3]. - The company has established a comprehensive technology platform that includes antigen design, mRNA sequence optimization, lipid nanoparticle delivery technology, and industrial production capabilities, making it one of the few companies with end-to-end capabilities in the industry [3][6]. Group 2: Financial Performance - Financial data indicates that Ginkgo Bioworks expects to generate revenue of 707 million yuan in 2024, representing a year-on-year increase of 461%, driven by three commercialized products [3]. - The company aims to achieve sales of 10 billion yuan by 2030, leveraging its existing product portfolio [3]. Group 3: Competitive Advantage - Ginkgo Bioworks possesses a proprietary lipid library of over 500 types, which supports various projects including vaccines and CAR-T therapies [5][6]. - The company has developed an AI algorithm for efficient antigen sequence design, with its algorithm system now in its third generation, and has established a lipid nanoparticle delivery technology platform with patent protections [6]. Group 4: Market Position - Major pharmaceutical companies like AbbVie, Eli Lilly, Johnson & Johnson, and AstraZeneca are investing in mRNA therapies and CAR-T technologies, indicating a competitive landscape [4]. - Ginkgo Bioworks is one of the few domestic companies capable of full-process localized production of mRNA therapy drugs, enhancing its market position [6].

Core Viewpoint - The research team at Xi'an University of Electronic Science and Technology has developed a novel non-ionic delivery system that addresses the "toxicity-efficiency" dilemma in mRNA therapy, enhancing safety and efficacy in gene therapy applications [1][2]. Group 1: Technology Overview - The new delivery system, termed TNP, utilizes thiourea groups to form strong hydrogen bond networks with mRNA, allowing for efficient loading without charge dependence, unlike traditional lipid nanoparticles (LNP) [2]. - TNP significantly extends the in vivo expression duration of mRNA to seven times that of LNP, improves targeting efficiency to the spleen, and achieves a near 100% cell survival rate, indicating high biocompatibility [2][3]. Group 2: Mechanism of Action - TNP employs a unique intracellular transport mechanism that avoids the Rab11-mediated recycling pathway, achieving a high intracellular retention rate of 89.7%, compared to only 27.5% for LNP [2]. - The interaction between thiourea groups and endosomal membrane lipids induces membrane permeabilization, allowing for the direct release of intact mRNA into the cytoplasm, thus circumventing lysosomal degradation [2]. Group 3: Implications for Gene Therapy - The innovative non-ionic delivery technology is expected to lower the costs of gene therapy, making treatments more accessible for patients with rare and chronic diseases [3]. - The research team has already developed multiple targeted delivery systems based on this technology, which are currently in animal testing phases for applications in tumor immunotherapy and gene editing for rare diseases [3].