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同济大学发表最新Nature Cancer论文
生物世界· 2025-08-26 08:15
撰文丨王聪 编辑丨王多鱼 排版丨水成文 癌症 的发展是一个多步骤的过程,在此过程中癌细胞获得了克服复制潜能限制以及逃避免疫系统破坏的能 力。与此同时,非癌细胞 (比如基质细胞) 逐渐被重新编程以支持肿瘤生长。 肿瘤发生的器官因其独特的组织驻留细胞类型,造就了肿瘤微环境 (TME) 的显著差异,并塑造了肿瘤不 同的临床特性,例如分子亚型、侵袭能力和对靶向治疗或免疫治疗的反应。单细胞 RNA 测序 (scRNA- seq) 和空间转录组学 (ST) 的最新进展已成为探索肿瘤微环境多样性的强大工具。然而,表型相关的细 胞类型是否普遍存在于不同癌症类型和阶段中仍不清楚。此外,构成肿瘤微环境内特定生态型的不同细胞 类型之间的相互作用尚不明确。 因此,从泛癌角度探究肿瘤微环境成分的动态变化以及细胞间相互作用,对于阐明癌症的发病机制至关重 要,并且是一个很有前景的治疗靶点。 2025 年 8 月 25 日 ,同济大学生命科学与技术学院 王晨飞 教授、 吴秋 助理教授作为共同通讯作者 ( 博士 后 韩雅 为第一作者 ) 在 Nature 子刊 Nature Cancer 上发表了题为: Spatiotemporal anal ...
武汉大学发表最新Nature Cancer论文
生物世界· 2025-08-26 04:03
撰文丨王聪 编辑丨王多鱼 排版丨水成文 结直肠癌 (Colorectal Cancer,CRC) 是全世界范围内发病人数第三的癌症 (每年近 200 万人,仅次于 肺癌 和 乳腺癌 ) ,死亡人数第二的癌症 (每年近 100 万人,仅次于 肺癌 ) ,与结直肠癌相关的基因突变主要为非编码的,位于顺式调控元件 (CRE) 中,但其潜在机制仍不清楚。 2025 年 8 月 25 日 ,武汉大学 缪小平 教授、 田剑波 教授团队 , 在 Nature 子刊 Nature Cancer 上发表了题为: Characterization of cis-regulatory elements and functional variants in colorectal cancer using epigenomics and CRISPRi screenings 的研究论文。 该研究利用表观基因组学和 CRISPRi 筛选,鉴定了 结直肠癌 中的顺式调控元件和功能突变,发现了一个与 癌前病变和结直肠癌风险增加显著相关的单核苷酸突 变—— rs10871066 ,并揭示了促癌机制。 在这项最新研究中,研究团队利用来自 533 ...
Nature子刊:王晓东/郑三多团队揭示SARM1在神经轴突退行中的作用机制
生物世界· 2025-08-25 04:39
撰文丨王聪 编辑丨王多鱼 排版丨水成文 轴突退行 (axonal degeneration) 是神经系统疾病中常见的一种病理变化,表现为轴突肿胀、碎裂和萎缩等,这会进一步导致神经细胞胞体的死亡和退化,与 各种神经退行性疾病的发生密切相关,包括阿尔茨海默病、帕金森病等中枢神经系统疾病以及化疗和糖尿病引起的外周神经损伤等。 SARM1 是 轴突退行 的关键执行者,通过其 TIR 结构域的 NAD 酶活 性导致 NAD⁺ 耗竭 而发挥作用。在正常情况下,SARM1 处于自抑制状态,但它会在轴突损 伤时被激活;然而,其中的潜在机制尚不清楚。 2025 年 8 月 22 日,清华大学生物医学交叉研究院/北京生命科学研究所 王晓东 院士、 郑三多 研究员等,在 Nature 子刊 Nature Chemical Biology 上发表了 题为: SARM1 activation promotes axonal degeneration via a two-step phase transition 的研究论文。该研究揭示了 SARM1 的激活通过两步相变促进 轴突 变性 。 首先,NMN ( NAD⁺ 的前体 ) 启动了 ...
中山大学/南方医科大学/南昌大学合作发表最新Nature Cancer论文
生物世界· 2025-08-24 04:03
撰文丨王聪 编辑丨王多鱼 排版丨水成文 大脑 与 肿瘤 之间的双向相互作用是癌症生物学中一个关键但仍未被充分理解的方面。大量的流行病学证据表明,癌症患者的抑郁症的发病率更高。更值得注意 的是,长期的临床研究和流行病学调查突显了心理社会压力对肿瘤发生、发展以及治疗反应的影响。 一项包含 2611907 名参与者的大型荟萃分析发现,抑郁症和焦虑症与癌症发病率、癌症特异性死亡率和全因死亡率的增加密切相关。因此,大脑与肿瘤之间的双 向相互作用可能会进一步加速肿瘤的进展。 越来越多的证据表明,大脑通过包括下丘脑-垂体-肾上腺 (HPA) 信号轴、自主神经系统和免疫反应在内的多种神经内分泌和神经通路来调控肿瘤的发生和发 展;然而,大脑直接调控外周肿瘤进展的确切机制,在很大程度上仍不清楚。 2025 年 8 月 21 日,中山大学孙逸仙纪念医院/南昌大学第一附属医院 李建明 教授团队联合南方医科大学 高天明 院士团队,在 Nature 子刊 Nature Cancer 上 发表了题为: Colorectal cancer cells hijack a brain–gut polysynaptic circuit from ...
因涉嫌性骚扰被开除,mTOR研究先驱远走捷克从新建立实验室,如今再发Nature
生物世界· 2025-08-21 08:00
撰文丨王聪 编辑丨王多鱼 排版丨水成文 David Sabatini ,1968 年出生于美国纽约,因 mTOR 相关研究而闻名世界。1994 年,在博士期间,他发现了 mTOR 蛋白,并揭示了它是雷帕霉素的直接作用 靶点。1997 年博士毕业后,他加入了 麻省理工学院 Whitehead 研究所,建立了自己的实验室, 2006 年拿到终身教职,2008 年入选 HHMI 研究员,2016 年 当选美国国家科学院院士 (时年48岁) 。 年少成名的 David Sabatini ,科研生涯可谓一帆风顺,对 mTOR 的功能、调控及其在癌症等疾病中的作用做出了众多关键贡献。迄今为止, 他发表了超过 200 篇论文,其中有超过 70 篇论文发表于 Cell 、 Nature 、 Science 三大顶刊,论文总被引次数超过 19万,H 指数高达 160。 而这些荣誉与辉煌,在 2020 年 10 月戛然而止。一位女性研究员向 麻省理工学院 Whitehead 研究所的新任所长投诉,称 David Sabatini 对其进行了 性骚扰 。 2021 年 8月, David Sabatini 被迫从 麻省理工学院 W ...
Nature子刊:杨仕明团队揭示胆囊切除术加剧结直肠癌发生的新机制,并提出潜在干预方式
生物世界· 2025-08-20 08:45
撰文丨王聪 编辑丨王多鱼 排版丨水成文 随着饮食结构的变化,胆囊疾病 (例如胆结石、胆囊息肉) 的发病率在全球范围内呈逐渐上升趋势。 胆囊切除术 是胆道外科手术中实施最频繁的一种,被视为 治疗胆囊疾病患者的常规疗法。 过去一直认为胆囊切除术几乎无害,然而,越来越多的证据表明,胆囊切除术后综合征以及与代谢综合征相关的疾病发病率显著上升。重要的是,之前的临床研 究已表明, 胆囊切除术与结直肠癌风险升高有关 ,但其潜在机制尚不明确。 2025 年 8 月 16 日,陆军军医大学 新桥医院 杨仕明 教授团队在 Nature 子刊 Nature Communications 上发表了题为: Cholecystectomy-related gut microbiota dysbiosis exacerbates colorectal tumorigenesis 的研究论文。 该研究表明, 胆囊切除术 相关的 肠道菌群失调和胆汁酸代谢受损 , 法尼醇 X 受体 (FXR) 信号转导,破坏 FXR/β-连环蛋白的相互作用,最终加剧结直肠肿 瘤的发生,而 FXR 激动剂 奥贝胆酸 (OCA) 可预防胆囊切除术相关的结直肠肿瘤发 ...
李蓬/李校堃/宋保亮院士等重磅嘉宾齐聚温州:代谢生物学年度盛会邀您注册
生物世界· 2025-08-04 04:02
Core Viewpoint - The article discusses the importance of metabolism in maintaining homeostasis and its role in various diseases, while announcing the upcoming C2-MERIT conference focused on metabolic research, innovation, and translation [2][4]. Conference Overview - The C2-MERIT conference will be held from August 22 to August 25, 2025, at Wenzhou Junting Hotel, Zhejiang Province, China [5][6]. - The conference aims to share cutting-edge scientific insights and foster innovative ideas within the scientific community [3]. Conference Schedule - Key events include a face-to-face meeting with Cell Press editors on August 21, 2025, and various academic sessions from August 22 to August 25, 2025 [4][6]. - The schedule features a Young Scholar Forum, plenary lectures, and multiple sessions focusing on different aspects of metabolism [16][21]. Registration Details - Registration fees vary: 1700 RMB for regular representatives before July 1, 2025, and 1900 RMB thereafter; student representatives pay 1100 RMB [20]. - Payment methods include online payment, bank transfer, and on-site payment options [22]. Organizing Bodies - The conference is organized by the Chinese Biophysical Society Metabolism Biology Branch and Cell Press, with support from various academic institutions [8][9].
《自然·代谢》重磅:生酮饮食为何真能瘦?复旦科学家破解肠道微生物与胆汁酸协同阻断能量吸收新机制
GLP1减重宝典· 2025-07-31 09:21
Core Viewpoint - The article discusses the rising popularity of ketogenic diets and presents new research findings that reveal the mechanisms behind weight loss associated with this diet, particularly focusing on the role of specific bile acids and gut microbiota [5][15]. Group 1: Mechanisms of Ketogenic Diet - Ketogenic diets induce the production of ketone bodies, prompting the body to utilize fat as an energy source, but recent studies indicate that the weight loss mechanisms are more complex [5]. - Research from Fudan University shows that ketogenic diets alter gut microbiota composition, leading to decreased levels of bile salt hydrolase (BSH), which results in increased levels of taurodeoxycholic acid (TDCA) and taurocholic acid (TUDCA) in the bloodstream [5][6]. - TDCA and TUDCA inhibit the expression of intestinal carbonic anhydrase 1, directly blocking calorie absorption [5][12]. Group 2: Clinical Observations and Findings - A clinical study involving over 400 participants confirmed the findings, suggesting that TDCA and TUDCA could serve as potential drug targets for treating obesity and its complications [6]. - In a 7-week study on mice fed a high-fat ketogenic diet (75.1% fat), significant reductions in body weight and fasting blood glucose were observed, alongside an increase in 22 metabolites, including six bile acids [9]. - The study also indicated that the presence of certain bile acids, particularly TDCA and TUDCA, plays a crucial role in the weight loss effects of the ketogenic diet [9][14]. Group 3: Gut Microbiota and Weight Loss - Analysis of the gut environment in mice revealed that the levels of TDCA and TUDCA are closely related to gut microbiota changes, with specific strains like Lactobacillus murinus ASF361 significantly impacting body weight and blood glucose levels [11][12]. - The study found that L. murinus ASF361 reduces serum levels of TDCA and TUDCA by metabolizing them into other bile acids, which suggests a complex interaction between diet, gut bacteria, and metabolic outcomes [12]. Group 4: Human Study Correlation - Data from 416 healthy participants indicated a correlation between low plasma levels of TDCA and TUDCA with high BMI and fasting blood glucose levels [14]. - Participants in a 12-week ketogenic diet study lost an average of 5.27 kg, with significant increases in plasma TDCA and TUDCA levels, aligning with findings from mouse experiments [14].
Cell子刊:姜学军团队揭示缺氧通过表观遗传调控铁死亡
生物世界· 2025-07-28 08:02
Core Viewpoint - The study reveals that hypoxia inhibits ferroptosis through a HIF-independent mechanism by suppressing KDM6A, a key player in lipid metabolism and ferroptosis resistance [2][5]. Group 1: Mechanism of Ferroptosis Regulation - Long-term hypoxia can inhibit ferroptosis in a HIF-independent manner [5]. - Hypoxia suppresses KDM6A, reshaping the lipid profile to confer resistance to ferroptosis [3][5]. - KDM6A acts as a non-classical oxygen sensor in the ferroptosis process, indicating a novel regulatory pathway [2][5]. Group 2: Implications for Cancer - The loss of KDM6A, a tumor suppressor, is commonly observed in bladder cancer, leading to resistance to ferroptosis [5]. - Pharmacological inhibition of EZH2, which opposes KDM6A activity, restores sensitivity to ferroptosis in bladder tumors carrying KDM6A mutations [4][5].
孔雀开屏:首都医科大学最新论文登上Cell子刊封面
生物世界· 2025-07-23 08:07
Core Viewpoint - The study reveals that lactylation of YTHDC1 at K82 enhances its phase separation, stabilizing oncogenic mRNA and promoting the progression of renal cell carcinoma (RCC) in a hypoxic environment [2][6][9]. Group 1: Research Findings - The research systematically mapped the lactylation profile of proteins under hypoxic conditions in RCC, focusing on the functional mechanism of YTHDC1 K82 lactylation [2][6]. - Elevated levels of global lysine lactylation (Kla) were found in human RCC tissues and cells, which promotes malignant development of RCC [6][7]. - YTHDC1 K82 lactylation, mediated by p300 under hypoxic conditions, promotes the malignancy of RCC both in vitro and in vivo [6][7]. Group 2: Mechanism of Action - YTHDC1 K82 lactylation enhances the phase separation of YTHDC1, leading to the expansion of nuclear condensates that protect oncogenic transcripts BCL2 and E2F2 from degradation by the PAXT-EXO complex [6][7][9]. - The study highlights that the increased lysine lactylation regulates the stability of YTHDC1 target genes, thereby facilitating the progression of RCC [9]. Group 3: Study Highlights - Quantitative lactylation proteomics analysis revealed high levels of lactylation modification proteins under hypoxic conditions [7]. - The study identifies a novel regulatory pathway involving YTHDC1 lactylation that opens new therapeutic targets in the intersection of tumor metabolism and RNA regulation [2][6].