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唠科|避免人体“内战”的免疫“安全卫士”——2025年诺贝尔生理学或医学奖成果解读
Xin Hua She· 2025-10-07 11:35
坂口志文 日本科学家 生于1951年 目前任职于日本大阪大学 奖成 三名获奖者在外周免疫耐受方面 取得了突破性发现。 How T cells discover a 图2 T细胞发疆病毒的过程 图片来源:诺贝尔牛理学或医学奖委员会 6. 插画/马蒂亚斯·卡尔伦 坂口志文发现了调节性T细胞,它可以有效阻止 免疫系统攻击人体自身,布伦科和拉姆斯德尔则 找到了与之相关的基因,这些成果加深了科学界 对免疫系统如何运作的理解,推动了自身免疫性 疾病等方面的研究。 片关安贝云芯么玩 "疏人体"内战"的 目 2025年诺贝尔生理学或医学奖成果解读 唠科工作室 图片来源:诺贝尔生理学或医学奖委员会 ©, 插画 / 马蒂亚斯 ·卡尔伦 玛丽·布伦科 美国科学家 生于1961年 目前任职手 美国系统生物学研究所 弗雷德·拉姆斯德尔 美国科学家 生于1960年 目前任职于 美国索诺马生物治疗公司 三名科学家的发现开创了外周免疫耐受这一全新研究 领域,推动了癌症和自身免疫性疾病治疗的发展。这 些发现还可能推动器官移植等领域的进展。 避免人体" 内战"的免疫 " 安全卫士" 人体免疫系统如同一支"军队"保护我们免受外 来病原体侵害。那么 ...
Terumo (TRUM.Y) M&A Announcement Transcript
2025-08-27 09:17
Summary of Terumo's Acquisition of Organox Company Overview - **Company Involved**: Terumo Corporation (TRUM.Y) - **Acquisition Target**: Organox, headquartered in Oxford, UK - **Acquisition Date**: Agreement signed on August 23, 2025 - **Acquisition Value**: $1,500,000,000 for 100% of Organox's outstanding shares [4][5][6] Core Points and Arguments - **Strategic Importance**: The acquisition marks Terumo's entry into the organ transplantation market, specifically focusing on organ preservation technology [4][8][10] - **Market Demand**: Global organ transplants exceed 150,000 annually, with a waiting list of approximately 470,000 patients, indicating a significant unmet need for transplant organs [10][11] - **Organox's Technology**: Organox's METRA device utilizes normothermic machine perfusion (NMP) to preserve livers, allowing for longer preservation times (up to 12 hours in the US and 24 hours in Europe) compared to traditional methods [14][15] - **Growth Potential**: Organox's sales revenue was $71,000,000 in 2024, with projections to reach JPY 100,000,000,000 (approximately $670 million) within the next decade [7][18] - **Synergies with Terumo**: The acquisition is expected to create synergies with Terumo's existing product portfolio, enhancing overall corporate value and expanding into new growth domains [8][20][22] Financial Implications - **Positive Impact on Earnings**: The acquisition is anticipated to positively affect adjusted operating profit and earnings per share starting next fiscal year [19][20] - **Growth Model**: Organox has achieved positive adjusted EBITDA just one year after its US launch, which is rare for startups, indicating a strong business model [18][20] Market Dynamics - **Challenges in Organ Transplantation**: The market faces challenges such as a low utilization rate of donated livers and a shortage of donors, particularly from donation after circulatory death (DCD) [12][13] - **Technological Advantage**: Organox's NMP technology addresses these challenges by improving the preservation and assessment of organ viability, potentially increasing the number of transplantable organs [14][15][16] Future Outlook - **Expansion Plans**: Terumo plans to expand beyond liver transplantation into kidney transplants, targeting a launch around 2030 [16][17] - **Long-term Growth Strategy**: The acquisition is part of Terumo's broader strategy to achieve significant growth and address the critical shortage of transplant organs [8][22] Additional Insights - **Cultural Fit and Synergy**: The acquisition aligns with Terumo's strategic direction, emphasizing the importance of groundbreaking technology and cultural compatibility [24][25] - **Regulatory Approvals**: Organox's METRA device has received CE marking and FDA approval, facilitating its market entry and growth [6][10] This summary encapsulates the key points from the conference call regarding Terumo's acquisition of Organox, highlighting the strategic importance, market dynamics, financial implications, and future growth potential.
协和医院成功实施“珠峰级”难度手术 20余位专家接力为上海小伙换“心肝”
Chang Jiang Ri Bao· 2025-08-07 01:24
Core Viewpoint - The successful completion of China's first combined heart-liver transplant surgery at Huazhong University of Science and Technology's Tongji Medical College Union Hospital marks a significant advancement in the field of organ transplantation, overcoming complex medical challenges [1][2]. Group 1: Medical Achievement - The combined heart-liver transplant surgery is referred to as the "Mount Everest" of organ transplantation, highlighting its complexity and significance in medical science [1]. - The patient, Li Lei, suffered from severe congenital heart disease and was diagnosed with end-stage heart failure, severe liver cirrhosis, and liver cancer, necessitating simultaneous organ transplantation [1]. - The surgical team faced significant challenges, including the interdependence of heart and liver functions and severe tissue adhesions from previous surgeries [1]. Group 2: Surgical Process - The surgical procedure involved a meticulous 143-minute operation to remove the diseased heart and successfully implant the donor heart, followed by the removal of the diseased liver and implantation of the donor liver [2]. - A multidisciplinary team of over 20 experts collaborated to navigate various critical phases of the surgery, including infection control, rejection management, respiratory support, and nutritional care [2]. Group 3: Institutional Performance - As of now, the Union Hospital has completed three combined heart-liver transplants, accounting for one-third of the total cases in the country [2]. - The hospital has performed over 1,200 heart transplants in the past 30 years, achieving a five-year survival rate of 89.1% [2].
猪胚胎中培育的人类心脏,存活了21天
Hu Xiu· 2025-06-24 06:30
Core Insights - Researchers have successfully cultivated human heart cells within pig embryos, marking a significant advancement in the field of organ transplantation and regenerative medicine [1][2][4] Group 1: Research Findings - The embryos containing human cells survived for 21 days, during which the small hearts began to beat [1][4] - The research involved reprogramming human stem cells to enhance their survival in pig embryos by introducing genes that prevent cell death and promote growth [3][4] - The team previously succeeded in cultivating early human kidneys in pig embryos, which survived for a month, and aimed to achieve similar results with the heart [2][3] Group 2: Methodology - Specific genes essential for heart development were knocked out in the pig embryos, allowing human stem cells to be injected during the early embryonic stage [3][4] - The human cells were marked with fluorescent biological markers to identify them within the developing heart [4][5] Group 3: Future Implications - The research could potentially address the global shortage of transplantable organs by creating animal models that can grow human organs [2][6] - There is a need for further analysis to confirm the composition of the heart cells, as complete human cell integration is crucial for successful transplantation [6][7]
首次在猪体内培育出“人类心脏”,我国学者登上Nature头条
Hu Xiu· 2025-06-17 11:10
Core Insights - The article discusses a groundbreaking study published in Nature, where researchers successfully cultivated a small human heart within a pig embryo, which was able to beat and survive for 21 days [1][4]. Group 1: Research Findings - Scientists have previously transplanted gene-edited pig organs (kidneys, hearts) into humans, and are now exploring the creation of human-animal chimeras to address global organ transplant shortages [4]. - The research team, led by researcher Lai Liangxue, reported the cultivation of a humanized heart in pig embryos, marking a significant advancement in xenotransplantation [5][6]. - The pig is considered a suitable donor species due to its organ size and anatomical similarities to humans [6]. Group 2: Methodology - The team utilized a method involving the creation of pig embryos lacking specific genes necessary for heart development, followed by the injection of human stem cells to promote the formation of the heart [5][6]. - The embryos were implanted into a sow for further development, and the resulting hearts reached a developmental stage comparable to that of a human heart at 21 days [7]. Group 3: Observations and Future Directions - The chimeric pig embryos could grow for a maximum of 21 days, after which they could not survive, potentially due to human cells disrupting pig heart function [7]. - The study did not disclose the proportion of human cells within the hearts, although previous research indicated that human cells constituted 40%-60% in pig kidneys [7]. - For future developments, it is essential that the heart is entirely composed of human cells to prevent immune rejection in human recipients [9].
Nature头条:我国学者首次在猪体内培育出“人类心脏”,为器官移植开辟新思路
生物世界· 2025-06-15 03:39
Core Viewpoint - The article discusses a groundbreaking study published in Nature, where researchers successfully cultivated a small human heart within a pig embryo, which was able to beat and survive for 21 days [1][4]. Group 1: Research Background - Scientists have previously succeeded in transplanting gene-edited pig organs (kidneys, hearts) into humans, and are now exploring the creation of human-animal chimeras to address global organ transplant shortages [3]. - A method to create chimeric animals involves generating embryos lacking specific genes necessary for certain organs and injecting human stem cells into these embryos [4][6]. Group 2: Research Findings - The research team, led by researcher Lai Liangxue, reported the first instance of cultivating a humanized heart in pig embryos, which began beating during the 21-day survival period [4][6]. - The team enhanced the survival of human stem cells in pigs by reprogramming them with genes that prevent cell death and promote growth, and then created pig embryos with two key heart development genes knocked out [7]. Group 3: Observations and Implications - The chimeric pig embryos grew for a maximum of 21 days, after which they could not survive, potentially due to human cells disrupting pig heart function [8]. - The hearts developed to a size comparable to that of a human heart at 21 days and were observed to be beating, although the proportion of human cells in the heart was not disclosed [8][10]. - For future development of transplantable hearts for humans, it is crucial that the organ is composed entirely of human cells to prevent immune rejection [10].
研判2025!中国再生医学行业产业链图谱、政策、市场规模及未来趋势:先进医疗技术需求不断增长,全球再生医学市场规模加速扩容[图]
Chan Ye Xin Xi Wang· 2025-05-15 01:20
Industry Overview - Regenerative medicine (RM) utilizes biological and engineering theories to promote self-repair and regeneration of the body, or to construct new tissues and organs for repairing, regenerating, and replacing damaged tissues and organs [1][4] - The global regenerative medicine market is expanding, with the market size projected to grow from $20.04 billion in 2021 to $35.82 billion in 2024 [1][12] Market Status - Regenerative medicine is considered the "third medical revolution" following drug and surgical treatments, becoming a core component of life science strategies globally [6][12] - The industry includes upstream raw materials and equipment supply, midstream product R&D and production, and downstream application through medical institutions and aesthetic organizations [4][12] Policy and Regulatory Environment - Various countries have implemented policies to promote the development of regenerative medicine, such as the U.S. "21st Century Cures Act" and the EU's regulations on biotechnology [7][9] - In China, policies have been established to support the clinical application of regenerative medicine technologies, including the management of stem cell therapies and the promotion of innovative medical technologies [9][23] Market Competition - The regenerative medicine sector has attracted numerous companies, with major players including Johnson & Johnson, Bard, Geistlich, and domestic firms like Zhenghai Biological, Guanhou Biological, and Maipu Medical [16][18] - The market is characterized by a diverse range of products and applications, with companies focusing on specific therapeutic areas such as cancer treatment, tissue repair, and organ transplantation [18][20] Development Trends - The industry is witnessing technological integration and innovation, with advancements in 3D bioprinting, gene editing, and artificial intelligence enhancing treatment efficacy [22][24] - The dual drive of policy support and capital investment is accelerating the commercialization of regenerative medicine, with increasing coverage of medical insurance for regenerative products [23][24]
1 Beaten-Down Stock to Buy Right Now and Hold for a Decade
The Motley Fool· 2025-04-24 11:45
President Donald Trump's trade war is creating significant uncertainty. Equities plunged following his decision to impose tariffs on almost every country, then soared after he announced a 90-day pause on his expanded tariff plans. It's challenging to predict which way the market will move next, but in times like these, it helps to invest in companies that look likely to perform well in the long run. Consider the case of TransMedics Group (TMDX 1.24%), a medical technology company whose shares have declined ...
TransMedics(TMDX) - 2024 Q4 - Earnings Call Transcript
2025-02-28 02:23
Financial Data and Key Metrics Changes - Total revenue for Q4 2024 was $121.6 million, representing approximately 50% growth year-over-year and 12% sequential growth from Q3 2024 [17][40] - Full year 2024 total revenue reached $441.5 million, representing approximately 83% growth over full year 2023 [19][49] - Overall gross margin for Q4 improved to 59%, up from 56% in Q3 2024 [18] - Operating profit for Q4 was $8.6 million, representing approximately 7.1% of total revenue, up from $3.9 million or 4% of total revenue in Q3 2024 [18][47] - Full year gross margin was 59.4%, down from 63.8% in 2023 due to a higher contribution of service revenue [20][52] Business Line Data and Key Metrics Changes - TransMedics transplant logistics service revenue for Q4 was $21.7 million, up from $9.2 million in Q4 2023 and up from $20.1 million in Q3 2024, representing approximately 8% sequential growth [18][41] - Product revenue for Q4 increased to $74.9 million, reflecting a 44.5% year-over-year growth [40] - Service revenue reached $46.7 million, growing 59.3% year-over-year [41] Market Data and Key Metrics Changes - U.S. revenue grew 11% sequentially to $117 million, while OUS revenue grew approximately 51% sequentially to $4 million [17] - For the full year 2024, U.S. revenue grew to $422 million, representing approximately 91% growth over the full year 2023 [19] - Overall U.S. OCS market share across all three organs was 20.9% for the full year 2024, up from 13.8% in 2023 [22] Company Strategy and Development Direction - The company aims to expand the utilization of available donor organs for transplantation while delivering the best possible clinical outcomes [8] - Future growth will be driven by the launch of next-gen heart and lung clinical programs targeted for H2 2025 [27][33] - The company plans to strategically invest in business infrastructure to ensure scalability while maintaining quality and reducing supply chain risks [34] Management's Comments on Operating Environment and Future Outlook - Management expressed confidence in the growth trajectory for 2025, expecting revenue guidance between $530 million and $552 million, representing a 20% to 25% growth over full year 2024 [36][55] - The company acknowledged operational challenges, including unexpected aircraft maintenance impacting availability and variability in organ transplantation volume [35] - Management emphasized the importance of educating the public about organ transplant challenges and the company's commitment to improving clinical outcomes [81] Other Important Information - The company conducted an independent investigation regarding allegations raised in a short report, which found no evidence of fraud or misconduct [10][12] - Total cash at the end of the quarter was $336.7 million, a decrease of $58.2 million from December 31, 2023 [48] Q&A Session Summary Question: Thoughts on seasonality and quarter-to-quarter variability - Management noted that they do not issue quarter-to-quarter guidance but acknowledged that variability is common in the transplant market, particularly in Q3 and Q4 [64][65] Question: Growth trajectories for organ-specific revenue - Management indicated that liver will continue to lead growth until contributions from heart and lung clinical programs are realized in the second half of 2025 [68][69] Question: Confidence in high-volume customers - Management reassured that concerns about customer attrition were unfounded, citing active usage by previously mentioned centers [72] Question: Impact of competitive risks from NRP approach - Management stated that NRP is not seen as a threat to their liver DCD franchise, with market share increasing to 53% [75] Question: Commentary on organ allocation issues - Management expressed encouragement about public awareness of organ transplant challenges but clarified that the issues highlighted do not significantly impact their business [83] Question: Guidance for Q1 and contribution from clinical trials - Management estimated that the contribution from clinical trials to revenue growth would be between 2% to 5% [90][92] Question: Scope and independence of the independent review - Management confirmed that the review was exhaustive and reported to the audit committee, but did not disclose further details [104] Question: Confidence in share gains for 2025 - Management expressed confidence in continued share gains, citing significant growth in market share despite external noise [108] Question: Capacity and logistics utilization - Management emphasized the importance of optimizing operations and maintaining capacity to handle demand fluctuations [112] Question: R&D spending growth expectations - Management indicated that R&D spending will continue to grow, focusing on OCS innovation and next-generation technology [117]