以下文章来源于赛业生物订阅号 ，作者小赛 在基因治疗、神经科学及基因功能体内研究等领域， 腺相关病毒 （AAV） 已成为递送基因工具不可或缺的 利器。然而，面对从设计到落地的全流程，许多研究人员仍感挑战重重： ❓ 基础概念是否清晰？AAV载体包装的究竟是基因还是蛋白？ ❓ 面对复杂的实验目标 （如基因过表达、敲低、标记） ，如何构建最合适的载体设计？ ❓ 启动子、血清型、病毒滴度这些关键参数，如何搭配才能实现高效且特异的递送？ ❓ 实验结果不理想、背景高、毒性大——问题究竟出在哪个环节？ 新一期线上课程 「AAV实验高频问题拆解：从基础知识到实操应用——聚焦科研人最关注的20个核心难 题」 将深入剖析。 课程时间： 11月20日（周四）晚7点 讲师： 赛业生物AAV基因治疗项目经理熊泽浩、AAV方案设计与技术支持工程师马玉竹 赛业生物订阅号 . 分享生命科学领域的前沿资讯、解读行业动态、讲解实用的学科知识、实验方法和技巧。 赛业生物AAV 基因治疗项目经理 专注于病毒衣壳的创新进化研究以及病毒业务方案设计，具有多年AAV基因治疗药物行业从业经验， 在AAV应用领域积累了丰富经验。 马玉竹 赛业生物AAV方案设 ...

Core Insights - The article highlights significant research published in the journal Cell, with a focus on studies led by Chinese scholars, covering various biological mechanisms and their implications for health and disease [2]. Group 1: Adeno-Associated Virus Research - A study identified an alternative receptor for adeno-associated viruses (AAV), named AAVR2, which can restore transduction in the absence of AAVR and provide a unique entry pathway for unclassified AAVs [4][6]. - The research suggests that overexpressing a minimal functional AAVR2 can enhance AAV transduction in vivo, allowing low doses of AAV to achieve similar therapeutic effects [6][8]. Group 2: Glucose Restriction and Tumor Metastasis - Research revealed that glucose restriction influences the pre-metastatic immune landscape in the lungs through exosomal TRAIL, suggesting a new mechanism of immune regulation [10][11]. - The study warns that extreme low-carbohydrate diets may inhibit tumor growth but could also promote lung metastasis, highlighting the need for careful evaluation of metabolic intervention strategies [11][13]. Group 3: Neurovascular Coupling - A study demonstrated that endothelial gap junction coupling enables rapid propagation of vasodilation during neurovascular coupling, crucial for meeting the brain's instantaneous energy demands [15][16]. - The findings indicate that the molecular composition of gap junctions varies along the arterial-venous axis, with the strongest connections found in the arterial segments [16][18]. Group 4: pH-Dependent Inflammatory Responses - Research uncovered how acidic environments during inflammation regulate immune responses through pH-dependent transcriptional condensates, identifying BRD4 condensates as pH sensors [20][21]. - The study suggests that pH acts not only as a byproduct of inflammation but also as an active regulator of the inflammatory response, providing new insights into chronic inflammation and autoimmune diseases [23]. Group 5: Thyroid Hormone Transport Mechanism - A study elucidated the structural mechanisms of thyroid hormone transport via MCT8 and OATP1C1, revealing their binding interactions with active thyroid hormones [25][26]. - The research highlights the importance of these transport mechanisms in development and disease, providing insights into the pathogenic mechanisms of related mutations [28].

Core Viewpoint - The article discusses the discovery of an alternative receptor for adeno-associated viruses (AAV), named AAVR2, which enhances the efficacy of AAV-mediated gene therapy and provides insights into reducing dose-related toxicity associated with AAV vectors [3][8]. Group 1: AAV and Its Applications - AAV is currently the most commonly used vector for in vivo gene therapy, approved for treating various diseases such as retinitis pigmentosa, spinal muscular atrophy, Duchenne muscular dystrophy, and hemophilia [1]. - The clinical success of human gene therapies relies on the safe and effective transduction of AAV into various tissues [2]. Group 2: Research Findings - AAVR2 (CPD) was identified as an alternative receptor that can restore the transduction of E branch AAVs, including AAV8, in the absence of AAVR, and provides a unique entry pathway for unclassified AAV11 and AAV12 [3][6]. - The research team characterized the direct binding between AAV8 capsid and AAVR2 using cryo-electron microscopy, identifying the amino acid residues involved in the interaction [6][9]. - A minimal functional AAVR2 (miniAAVR2) was overexpressed to enhance in vivo AAV transduction, allowing low doses of AAV to achieve similar therapeutic effects [6][9]. Group 3: Implications for AAV Biology - This research provides new insights into AAV biology and offers clinically applicable solutions to mitigate dose-related toxicity associated with AAV vectors [8].