聊聊Sci
淼淼Elva聊聊Science和Nature！
| Publishes | Daily | Episodes | 1055 | Founded | a year ago |
|---|---|---|---|---|---|
| Language |  ZH-CN | Number of Listeners | Category | Science |
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本文介绍了一种基于生物分子凝聚体（BMCs）的新型细胞内蛋白质降解工具，旨在实现对致病蛋白的精准清除。研究者利用液-液相分离（LLPS）技术将抗体浓缩于纳米级凝聚体中，并通过金属酚醛网络（MPN）外壳进行稳定，显著提升了抗体进入细胞的效率及在胞质中的稳定性。该系统集成了抗体引导的识别机制与蛋白酶体募集基序，能够特异性地降解肿瘤相关的 KRAS G12V 突变蛋白，同时不影响正常的野生型蛋白。实验结果显示，该方案在异种移植瘤模型中表现出强大的抑瘤效果，且具有良好的生物安全性。此外，这种策略具备高度... more
这份研究揭示了急性髓系白血病（AML）中白血病干细胞（LSC）的异质性，并识别出四种决定治疗效果的独特亚型。研究发现，LAMP5+ 单核/树突状（MoDe）干细胞通过依赖 MCL-1 蛋白对常规的 venetoclax 疗法产生抗药性，但此类患者对 MEK1/2 抑制剂表现出特有的敏感性。同时，大多数复发病例是因为白血病干细胞向巨核/红系（MEP）状态转化，从而将生存依赖从 BCL-2 转向了 BCL-xL。通过监测这些特定亚型的生物标志物，医生可以更精准地识别耐药风险并制定个性化的靶向治疗方案... more
该研究揭示了急性髓系白血病（AML）中一种此前未知的代谢机制，即白血病干细胞（LSCs）通过增强脂肪酸氧化（FAO）实现自主酮体生成。研究发现，关键限速酶 HMGCS2 在白血病干细胞中呈高表达态势，其产生的酮体 BHB 并非仅作为能量来源，而是通过表观遗传方式抑制 FADS2 基因的表达。这种调控减少了促铁死亡磷脂的积累，从而使癌变干细胞免于铁死亡并维持其自我更新能力。实验证明，靶向阻断这一酮生成-铁死亡轴能显著抑制白血病进展，且不会损害正常的造血干细胞。这一发现为开发特异性清除恶性干细胞而不... more
这篇综述探讨了利用人类诱导多能干细胞（hiPSC）衍生的类器官模型，来模拟实体瘤在大脑、肺、肝脏和骨骼等器官中的转移生态位。传统的啮齿动物实验因物种差异和通量限制，难以有效转化为临床疗法，而将类器官与癌细胞共同培养形成的“嵌合体（Chimeroids）”为研究肿瘤定植提供了新途径。文章详细介绍了如何通过集成基质、血管和免疫成分来增强模型的生理相关性，从而更精准地还原复杂的肿瘤微环境。这种具有扩展性的体外平台不仅支持大规模的遗传和药物筛选，还为发现新的治疗靶点提供了重要工具。虽然类器官在细胞成熟度... more
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Reviews
- 很好👍
做实验的时候听一听蛮好
Apple Podcasts5nothingppChina2 months ago - 我最喜欢的播客之一，谢谢淼淼Elva
One of my favorite podcasts, thanks, 淼淼Elva
Apple Podcasts5TylerZouChina7 months ago - AI生成播客
选题挺好，真人聊就好了
Apple Podcasts1Yuantai SunChina8 months ago
Chart Rankings
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Apple Podcasts | #28 | China/Science |
Apple Podcasts | #158 |  Hong Kong/Science |
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| Listeners per Episode | Gender Skew | Location | |||
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