Core Viewpoint - Tirzepatide is more effective than Semaglutide for weight loss in adults with overweight or obesity, as evidenced by a study published in JAMA Internal Medicine [4][5][15] Group 1: Study Overview - The study included 18,386 participants, with 52% having type 2 diabetes and an average age of 52 years [6] - The average follow-up time was 165 days, with over 50% of participants discontinuing treatment [6] - Researchers recorded gastrointestinal adverse events, finding similar risks between both drug groups [6] Group 2: Weight Loss Results - The results showed significant advantages for the Tirzepatide group in weight loss percentages: - ≥5% weight loss: Tirzepatide ~81.8%, Semaglutide 66.5%, risk ratio 1.76 [10] - ≥10% weight loss: Tirzepatide ~62.1%, Semaglutide 37.1%, risk ratio 2.54 [10] - ≥15% weight loss: Tirzepatide ~42.3%, Semaglutide 18.1%, risk ratio 3.24 [10] - Weight changes at follow-ups were also significantly greater for Tirzepatide: - 3 months: Tirzepatide 5.9%, Semaglutide 3.6% - 6 months: Tirzepatide 10.1%, Semaglutide 5.8% - 12 months: Tirzepatide 15.3% [12] Group 3: Expert Insights - Dr. Patricia Rodriguez highlighted that patients using Tirzepatide were more than twice as likely to lose 10% of their weight compared to those using Semaglutide, and three times more likely to lose 15% [16] - Dr. Nick Stucky noted that while Tirzepatide's effectiveness is superior, both medications resulted in significant weight loss, with no difference in gastrointestinal adverse event risks [16] - Factors such as drug availability and insurance coverage may influence the choice between these medications [16]

Core Insights - The article discusses the alarming rise in global cancer cases, projected to exceed 35 million by 2050, a 77% increase from 2022, driven by factors such as smoking, alcohol consumption, obesity, and air pollution [1] - A novel cancer treatment mechanism developed by Professor Liang Run-song's team at Hong Kong Polytechnic University focuses on starving cancer cells by targeting their specific amino acid needs, particularly arginine [3][10] - The drug BCT-100, which utilizes this mechanism, has been approved for clinical trials by the FDA and targets arginine-dependent cancers like acute myeloid leukemia and melanoma [4][3] Research and Development - Liang Run-song's background in chemistry and molecular biology has shaped his focus on converting protein molecules into therapeutic agents for difficult-to-treat diseases [2] - The research team discovered that rapidly proliferating cancer cells have a heightened demand for specific nutrients, particularly certain amino acids, leading to the hypothesis that reducing these nutrients could inhibit cancer cell growth [10][3] - The development of BCT-100 involves injecting arginase to lower blood arginine levels, effectively starving cancer cells while sparing normal cells [3][11] Clinical Trials and Future Prospects - BCT-100 is currently in the third phase of clinical trials, with hopes for market availability in the near future [4][13] - The research team has also expanded their focus to metabolic diseases, developing a long-acting formulation of arginase, ABarginase, which shows promise in treating obesity and diabetes [5][15] - ABarginase has received recognition for its innovative design and is currently advancing through preclinical trials with support from Roche's accelerator program [6][5] Industry Context - The biotechnology startup ecosystem in Hong Kong is thriving, with a significant increase in the number of startups and a growing number of unicorns in high-growth sectors like biotechnology [7] - Liang Run-song emphasizes the importance of local support in terms of funding and facilities for the successful translation of research into clinical applications [8][19] - The establishment of the He Tao Innovation and Technology Park is seen as a potential hub for biotechnology development, providing essential resources for startups [19]

撰文丨王聪 编辑丨王多鱼 排版丨水成文 近年来，以 司美格鲁肽 （Semaglutide） 为代表的 胰高血糖素样肽-1 （GLP-1） 受体激动剂类药物，彻底改变了肥胖治疗格局，只需一周注射一次，发挥抑 制食欲、减少热量摄入的作用，已被用于治疗 2 型糖尿病、肥胖症，以及心血管疾病、睡眠呼吸暂停综合症等疾病的治疗。 而现在，一种口服形式的候选药物—— GRK 偏向型 β 2 AR 部分激动剂 ，在临床前试验中显示出与注射版 GLP-1 类药物类似的血糖调控和减重效果，且没有出 现 GLP-1 类药物常见的副作用 （导致肌肉量减少） ，且在 1 期临床试验中显示出良好的药代动力学特性以及良好的耐受性，因此，该候选药物有望成为治疗 2 型糖尿病和肥胖症的注射给药的 GLP-1 类药物的口服替代品。 该研究以： GRK-biased adrenergic agonists for the treatment of type 2 diabetes and obesity 为题，于 2025 年 6 月 23 日发表在了国际顶尖学术期刊 Cell 上 ，论文作者来自 Atrogi AB 公司、斯德哥尔摩大学，卡罗林斯 ...

撰文丨王聪 编辑丨王多鱼 排版丨水成文 长效的胰高血糖素样肽-1 受体激动剂 （GLP-1RA） 通过作用于中枢神经回路，使超重和肥胖的药物治疗取得了重大突破。这些激动剂最初是为治疗 2 型糖尿 病而开发的，由于其在减重方面的有效性，部分应用范围已扩展减肥药物领域，并且它们还具有独立于降血糖或减重效果的心脏保护特性。 司美格鲁肽 （ Semaglutide ） 是目前临床应用中最有效的单受体激动剂，在大规模人体临床试验中，使用 68 周后可使体重减轻约 15%。 尽管这些长效 GLP- 1 受体激动剂 降血糖效果 似乎主要是通过直接与 胰腺 中的 GLP-1 受体的结合来介导的，但 减重效果 已知是它们作用于 大脑 的结果。 司美格鲁肽 导致体重减轻的主要机制被认为是通过抑制食欲从而减少了热量摄入，但该药物是否还通过直接作用于大脑从而对外周代谢产生影响，进而促进体重 减轻，这一点仍不清楚。 2025 年 5 月 22 日，德国哥德堡大学的研究人员在 Cell 子刊 Cell Metabolism 上发表了题为： Semaglutide effects on energy balance are mediate ...