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类器官之父最新论文:利用人类气道黏膜下腺体类器官研究炎症和感染,一作已回国加入中国科学院
生物世界· 2025-06-13 07:33
Core Viewpoint - The research developed human airway submucosal gland (SMG) organoids to study respiratory inflammation and infection, marking a significant advancement in organoid research and its applications in drug development and regenerative medicine [2][3]. Group 1: Research Background - The study was led by Hans Clevers' team, with Lin Lin as the first author, and published in Cell Stem Cell on June 12, 2025 [2]. - The development of organoids began in 2009 with the cultivation of intestinal organoids from mouse intestinal stem cells, which opened the era of organoid research [2]. Group 2: Importance of SMG - SMG plays a crucial role in mucus secretion and host defense, containing various cell types that contribute to airway moisture and pathogen resistance [7]. - Recent studies indicate that SMG aids in the repair and regeneration of airway epithelium after injury, suggesting its potential as a reservoir of multipotent progenitor cells [8]. Group 3: Research Findings - The research established human organoids from primary bronchial tissues to explore the unique physiological characteristics of SMG and surface airway epithelium (SAE) [9]. - Single-cell RNA sequencing confirmed that the organoid models accurately replicate the inherent cellular heterogeneity of each tissue type, with SMG organoids rich in MUC5B-producing cells [9]. Group 4: Key Highlights - The study successfully cultivated SMG organoids from human bronchial tissue [10]. - ANPEP/CD13 was identified as a specific marker for glandular secretory cells [10]. - The research demonstrated that cytokines related to chronic obstructive pulmonary disease (COPD) trigger different inflammatory responses in the organoids [10]. Group 5: Conclusion - The SMG organoid model serves as a new tool for investigating the complex roles of SMG in human airways, providing a more physiologically relevant system for studying responses to infection and inflammation [12].
Science重磅:华人团队破解类器官关键难题,培养出具有逼真血管网络的心脏和肝脏类器官
生物世界· 2025-06-06 07:58
Core Viewpoint - The recent research from Stanford University introduces a method to cultivate vascularized cardiac and hepatic organoids from human pluripotent stem cells, overcoming significant limitations in organoid development and enhancing their utility as biological models for studying organ development and drug exposure effects [2][3]. Group 1: Research Background - The field of organoid research began in 2009 with the creation of the first intestinal organoid from adult stem cells, leading to advancements in various organoid types for studying diseases and drug development [1]. - A persistent challenge in organoid research is their small size and lack of a vascular system, which limits their growth and viability beyond a certain diameter [1]. Group 2: Research Methodology - The research team developed a method to cultivate vascularized cardiac organoids capable of growing larger and reaching more mature stages, making them more practical for biological modeling [3][5]. - They optimized a culture formula combining 34 different conditions to generate cardiac organoids containing key cell types, including cardiomyocytes, endothelial cells, and smooth muscle cells [6][7]. Group 3: Key Findings - The optimal culture condition (Condition 32) produced vibrant cardiac organoids with a significant presence of the three key cell types [7][9]. - The vascularized cardiac organoids exhibited a structure resembling capillaries, with diameters of 10-100 micrometers, similar to human hair width [10]. - Analysis revealed that these organoids encompass 15-17 different cell types, comparable to those found in a six-week-old human embryonic heart [11]. Group 4: Implications and Future Directions - The research indicates that these vascularized organoids can serve as models for studying early human development and drug effects, with initial tests showing increased vascularization in response to opioid exposure [12]. - The study confirmed that vascular formation in different organ systems follows a conserved developmental program, suggesting the potential to cultivate other vascularized organoids, such as hepatic organoids with complex vascular networks [13][14]. - Future plans include extending the development time of these organoids and optimizing the culture conditions to generate additional cell types, aiming to better mimic adult organ composition [16].
义翘神州(301047) - 2025年5月8日投资者关系活动记录表
2025-05-08 10:04
Group 1: Financial Performance - The company's CRO service revenue for 2022 was 109.6 million with a gross margin of 66.96% [4] - In 2023, CRO service revenue increased to 154.1 million with a gross margin of 69.62% [4] - However, in 2024, CRO service revenue rose to 168.5 million but the gross margin dropped to 47.58%, indicating a decline of over 20 percentage points [4] Group 2: Market Challenges and Strategies - The company faced a negative growth in CRO service revenue in the second half of 2024 due to market competition and price adjustments [2] - To mitigate the impact of increased tariffs between the US and China, the company has enhanced local warehousing and inventory measures while leveraging its US and Canadian production capabilities [3] - The company aims to improve service competitiveness and expand overseas CRO business to achieve growth in 2025 [2] Group 3: Business Development and Future Outlook - The company expects its conventional business revenue to continue growing in 2025, despite uncertainties in unconventional business revenue due to external factors [3] - The dry powder culture medium business is anticipated to generate revenue starting in 2025 after initial customer trials in 2024 [5] - The company plans to enhance the utilization of the Skyland Industrial Square, acquired for over 900 million, to support the biopharmaceutical industry chain in the capital [5] Group 4: Product Development and Innovation - The company is actively developing biological reagents related to organoid research, including matrix gels, although there are currently no plans for traditional matrix gel products due to animal use requirements [7] - New products such as salt-tolerant nucleic acid enzymes and linking enzymes have been launched by the Suzhou subsidiary, which is still in the process of market expansion [6]