细胞疗法
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致病T细胞可转化为调节性T细胞 已成功用于实验动物自身免疫性疾病治疗
Ke Ji Ri Bao· 2025-10-23 23:51
Core Insights - Two Japanese research teams, including Nobel Prize winner Shimon Sakaguchi, have developed an efficient method to convert pathogenic T cells into regulatory T cells, showing promise for treating autoimmune diseases in mouse models [1][2] Group 1: Research Methodology - The Osaka University team established an innovative strategy to generate antigen-specific regulatory T cells from existing T cell resources in the human body, successfully activating effector T cells and promoting the expression of the key transcription factor Foxp3 [2] - The method demonstrated broad applicability across various human and mouse memory and effector T cells, effectively controlling autoimmune responses in inflammatory bowel disease and graft-versus-host disease [2] Group 2: Clinical Applications - Keio University applied the same technology to a mouse model of pemphigus vulgaris, a disease driven by autoreactive CD4+ T cells, successfully converting pathogenic T cells into stable regulatory T cells [2] - The converted regulatory T cells migrated to skin-associated lymph nodes, effectively suppressing the activation of pathogenic T cells and the production of autoantibodies, leading to alleviation of skin lesions [2]
登上Cell子刊封面:王敏君团队等建立临床级的规模细胞生产方案,为肝病细胞治疗带来新突破
生物世界· 2025-10-22 10:30
Core Viewpoint - Cell therapy presents a promising method for treating liver diseases, with the challenge of obtaining sufficient safe and functional liver cells for transplantation and treatment [3]. Group 1: Research Findings - A research team from the Navy Medical University and Shanghai Jiao Tong University published a paper on large-scale manufacturing of human gallbladder epithelial cells (hGBEC) and derived hepatocytes, which was selected as a cover paper in Trends in Biotechnology [4]. - The team established a component-defined, Matrigel-free culture system for hGBEC, enabling large-scale production under GMP conditions, and successfully generated functional hepatocytes that demonstrated typical liver functions [4][8]. - The production process can yield at least 10^11 cells from a single donor, sufficient to treat multiple adult patients with liver failure, ensuring quality control and biosafety [8]. Group 2: Clinical Implications - The generated hepatocytes exhibit typical liver functions, including albumin secretion, urea production, and drug metabolism, and can be used for drug toxicity testing [8]. - In vivo transplantation of these functional hepatocytes successfully rescued mice with liver failure, indicating potential clinical applications for liver disease treatment [8][10]. - The large-scale and convenient production strategy of hGBEC serves as a biological resource for clinical applications and provides valuable models for liver disease research [10].
新型自然杀伤细胞既抗癌又能“自保”
Ke Ji Ri Bao· 2025-10-15 23:27
Core Insights - A new type of chimeric antigen receptor-natural killer (CAR-NK) cell has been developed by scientists from MIT and Harvard, which can precisely destroy cancer cells while evading the human immune system, potentially addressing the long-standing issue of immune rejection in cell therapies [1][2] Group 1: CAR-NK Cell Development - The CAR-NK therapy typically requires extracting NK cells from patients, genetically modifying them to express chimeric antigen receptors, and then expanding them in vitro before reintroducing them into the patient [1] - The challenge with using NK cells from healthy donors is that the recipient's immune system often recognizes these foreign cells as "non-self" and eliminates them [1] Group 2: Mechanism of Action - The research team has enabled donor NK cells to learn an "invisibility trick" by removing HLA-1 class molecules, which are identity recognition proteins, allowing NK cells to evade host T cell attacks [2] - Short interfering RNA was introduced to silence genes responsible for HLA-1 production, while also integrating CAR genes and genes encoding PD-L1 or single-chain HLA-E (SCE) to enhance the anti-cancer capabilities of NK cells [2] Group 3: Experimental Results - In experiments targeting lymphoma, the modified CAR-NK cells nearly completely eradicated tumors, whereas unmodified or only CAR gene-carrying NK cells were quickly eliminated by the host immune system and failed to control cancer progression [2] - The new CAR-NK cells also exhibited a lower risk of triggering cytokine release syndrome [2] Group 4: Future Implications - The team predicts that CAR-NK cells may gradually replace CAR-T cells in cancer treatment [2] - The gene construction strategies developed in this research could be applied to optimize CAR-NK therapies for other types of cancer [2]
谭蔚泓院士连发3篇论文,开发核酸适配体药物,治疗阿尔茨海默病及多种癌症类型
生物世界· 2025-10-09 08:30
Core Insights - The article discusses the development of nucleic acid aptamer-based therapeutics by a research team led by Academician Tan Weihong from the Chinese Academy of Sciences, focusing on potential treatments for Alzheimer's disease and triple-negative breast cancer [2][9]. Group 1: Alzheimer's Disease Treatment - The research team developed Apt-M, a nucleic acid aptamer-armed monocyte therapy, which targets and clears extracellular Tau protein, alleviating neuroinflammation in mouse models of Alzheimer's disease [4][6]. - Treatment with Apt-M resulted in reduced activation of glial cells, alleviated neuroinflammation, and preserved neuronal and mitochondrial integrity, leading to improved memory and spatial learning abilities in the Alzheimer's mouse model without causing toxicity or behavioral side effects [6][8]. Group 2: Triple-Negative Breast Cancer Treatment - The team introduced CD4 aptamer-engineered cell platforms (Apt CD4-LNT) that selectively recruit and activate CD4+ T cells, enhancing anti-tumor immunity in triple-negative breast cancer [10][12]. - This approach aims to overcome challenges related to poor tumor infiltration and immunosuppressive tumor microenvironments, thereby promoting targeted infiltration and activation of CD4+ T cells, which in turn enhances the activity of NK cells, B cells, and dendritic cells [12][14]. Group 3: Cancer Therapy with Aptamer-Drug Conjugates - The research also presented Sgc8c-M, an aptamer-drug conjugate (ApDC) combining a potent anti-mitotic agent MMAE with the PTK7 nucleic acid aptamer, showing promise in treating cancers that overexpress PTK7 [16][17]. - Comprehensive evaluations from rodents to non-human primates indicated that Sgc8c-M effectively induced sustained tumor regression in xenograft models, outperforming unlinked MMAE, the chemotherapy drug paclitaxel, and a PTK7-targeted antibody-drug conjugate [17][19].
Nature子刊:谭蔚泓/邱丽萍团队开发核酸适配体武装的单核细胞疗法,治疗阿尔茨海默病
生物世界· 2025-10-04 01:00
Core Viewpoint - Alzheimer's disease (AD) is characterized by the gradual decline of memory and cognitive functions, with a focus on the complex interactions of various disorders leading to neurodegeneration rather than solely targeting specific neuronal features [2] Group 1: Research Findings - A recent study published in Nature Biomedical Engineering developed aptamer-armed monocytes (Apt-M) that can target and clear extracellular Tau protein, alleviating neuroinflammation in Alzheimer's disease mouse models and improving memory and spatial learning abilities without causing toxicity [3][8] - Monocytes, particularly the Ly6C+ inflammatory subset, can migrate across the blood-brain barrier (BBB) and differentiate into macrophages, which can phagocytize neurotoxic substances like Aβ, potentially slowing the progression of neurodegeneration [6] - The study highlights that the engineered Apt-M can effectively penetrate the BBB and accumulate in Tau-rich brain regions, significantly reducing Tau protein burden and suppressing neuroinflammation, thereby maintaining neuronal and mitochondrial integrity [8][10] Group 2: Mechanism and Implications - The research indicates that enhancing the beneficial functions of monocytes is ideal for treating Alzheimer's disease, as they can be modified to improve their efficacy in clearing toxic proteins [6][7] - The use of nucleic acid aptamers, which are short single-stranded DNA or RNA oligonucleotides, allows for targeted delivery and effective clearance of Tau proteins, presenting a promising strategy for Alzheimer's disease intervention [7][10] - Overall, the study suggests that nucleic acid aptamer-guided monocytes provide a novel approach for targeted delivery, effective clearance, and sustained neuroprotection in Alzheimer's disease treatment [10]
Ryoncil® Receives J-Code From Medicare & Medicaid Services (CMS) Facilitating Reimbursement and Broader Patient Access
Globenewswire· 2025-10-03 01:04
Core Points - Mesoblast Limited announced that the Healthcare Common Procedure Coding System (HCPCS) J-Code J3402 for Ryoncil became active for billing and reimbursement on October 1, 2025, marking a significant milestone for the product [1][2] - The permanent J-Code provides a standardized billing pathway for Ryoncil, facilitating reimbursement and improving patient access [2] - Ryoncil is the first FDA-approved mesenchymal stromal cell (MSC) product for any indication and is specifically approved for children under 12 with steroid-refractory acute graft-versus-host disease (SR-aGvHD) [3][6] Company Overview - Mesoblast is a leader in developing allogeneic cellular medicines for severe inflammatory conditions, utilizing a proprietary mesenchymal lineage cell therapy technology platform [5] - The company is committed to developing additional cell therapies for various indications, including SR-aGvHD in adults and biologic-resistant inflammatory bowel disease, as well as heart failure and chronic low back pain [7] - Mesoblast has a strong intellectual property portfolio with over 1,000 granted patents or applications, providing commercial protection expected to extend through at least 2041 in major markets [8]
跨国企业全球研发高层:在中国看到的更多是机遇 能让新想法更快转化为新药
Zhong Guo Xin Wen Wang· 2025-09-24 07:50
Core Viewpoint - China is creating a rich ecosystem for life sciences innovation, presenting more opportunities than challenges for companies like AstraZeneca [2][4] Group 1: China's Innovation Landscape - China has made significant progress in new molecular drugs, AI applications, and cell and gene therapies, attracting multinational companies to expand their R&D presence [3] - The country has established high-level research platforms and nurtured innovative talent, forming unique research advantages [3] - China is actively promoting the integration of basic research with clinical needs and participating in global scientific collaboration [3] Group 2: AstraZeneca's Commitment to China - AstraZeneca has established its sixth global strategic R&D center in Beijing, emphasizing its commitment to China's scientific innovation capabilities [4] - The global R&D team in China is responsible for 20% of AstraZeneca's overall clinical R&D tasks, with nearly 20 global clinical trial projects led by this team [4] - AstraZeneca plans to support the establishment of approximately 800 diagnostic centers across China by the end of 2025 to enhance standardized treatment levels [6] Group 3: Collaboration and Future Prospects - AstraZeneca has engaged in 15 collaborations with 14 Chinese innovative drug companies over the past two years, indicating a vibrant life sciences ecosystem in China [5] - The launch of the "AstraZeneca Global Chronic and Rare Disease R&D Postdoctoral Program" aims to foster future leaders in drug discovery [6] - AstraZeneca aims to leverage China's research capabilities to accelerate the market introduction of early-stage drugs developed by Chinese scientists [6]
120万一针癌细胞清零?癌症患者的“救命稻草”为何遥不可及?
Yang Shi Wang· 2025-09-21 01:15
Core Insights - CAR-T therapy has emerged as a promising treatment for certain types of cancers, particularly blood cancers, showing significant efficacy in patient outcomes [1][2][3] - The high cost of CAR-T therapy, typically ranging from 1 million to 1.3 million RMB, poses a significant barrier for many patients, as it is not covered by insurance [2][10] - There are ongoing discussions and research aimed at making CAR-T therapy more accessible through cost reduction and expanding its applications beyond blood cancers [12][14][15] Group 1: CAR-T Therapy Overview - CAR-T therapy is an advanced immunotherapy that enhances the patient's own T cells to target and eliminate cancer cells, demonstrating remarkable success in treating blood cancers [1][4][8] - Currently, there are six CAR-T products available in China, primarily for leukemia, lymphoma, and multiple myeloma, with some achieving over 50% ten-year survival rates [2] Group 2: Economic Barriers - The cost of CAR-T therapy is a major concern, with prices in China around 1.29 million RMB per patient, making it unaffordable for many [10][12] - Patients often resort to "compassionate CAR-T" treatments, which are experimental and funded by research institutions, but access is limited due to strict eligibility criteria [10][11] Group 3: Research and Development Challenges - The high cost of CAR-T therapy is attributed to the complex manufacturing process, reliance on imported materials, and the small patient population, which makes cost distribution challenging [11][12] - Experts suggest that developing universal CAR-T products could significantly reduce costs and improve accessibility, but this requires overcoming immune rejection issues [14][15] Group 4: Future Directions - Expanding the indications for CAR-T therapy to include solid tumors and other diseases could increase its patient base and help lower costs through economies of scale [15] - The introduction of a dual-directory system for insurance coverage may provide more options for patients while supporting pharmaceutical innovation [13][14]
BioCardia Announces CardiAMP Chronic Myocardial Ischemia Trial Top Line Data of Roll-in Cohort Show Improved Exercise Tolerance and Reduced Angina Episodes at Six-Month Primary Follow-up
Globenewswire· 2025-09-18 11:00
Core Insights - BioCardia, Inc. announced positive primary endpoint results from the CardiAMP Cell Therapy in Chronic Myocardial Ischemia Trial, indicating the therapy's potential in treating refractory angina [1][2][4] Company Overview - BioCardia, Inc. is a leader in cellular and cell-derived therapeutics for cardiovascular and pulmonary diseases, with a focus on developing innovative therapies like CardiAMP and CardiALLO [7] Clinical Trial Results - The open-label roll-in cohort showed that the CardiAMP Cell Therapy was well tolerated, with no major adverse cardiac events reported [2] - Patients experienced an average increase in exercise tolerance of 80 seconds and an 82% reduction in angina episodes at the six-month primary endpoint compared to pre-treatment levels [2] - 60% of patients demonstrated substantial improvements in both exercise tolerance and angina episodes [2] Comparison with Existing Therapies - Early results from the CardiAMP therapy compare favorably with current FDA-approved therapies such as Ranolazine and Enhanced External Counter Pulsation (EECP), which also showed significant reductions in angina episodes [3] Unmet Medical Need - Chronic myocardial ischemia with refractory angina affects an estimated 600,000 to 1.8 million patients in the U.S., highlighting a significant unmet need for effective therapies [5] - Up to 15% of patients with ischemia or angina are suboptimal candidates for conventional revascularization, indicating a demand for new treatment options [5] Therapy Mechanism - CardiAMP Cell Therapy utilizes a patient's own bone marrow cells delivered via a minimally invasive procedure, aiming to stimulate the body's natural healing response [6] - The therapy incorporates unique elements such as pre-procedural cell analysis, high target dosage, and a proprietary delivery system, enhancing safety and cell retention [6]
Arcellx, Inc. (ACLX) Presents At Morgan Stanley 23rd Annual Global Healthcare Conference Transcript
Seeking Alpha· 2025-09-10 19:50
Company Overview - Arcellx was founded approximately 10 years ago with the aim of addressing three primary needs in cell therapy: safety, efficacy, and scale, along with reliable manufacturability to enhance accessibility [2] - The company has developed a core technology known as the D-Domain, which is utilized in its lead asset, anito-cel, considered a best-in-class therapeutic option for patients with multiple myeloma [2] Pipeline and Development - Arcellx is actively leveraging its technology in ongoing clinical trials for acute myeloid leukemia (AML) and myasthenia gravis, indicating a commitment to expanding its therapeutic applications [3]