QSense耗散型石英晶体微天平在制药领域中的应用

智能文字提取功能测试中

QSense耗散型石英晶体微天平在制药领域中的应用 QSense 耗散型石英晶体微天平技术耗散型石英晶体微天平（QCM-D）技术是一项表界面敏感且多功能的分析技术，主要用于研究薄膜、生物分子相互作用以及其他与表界面相关的过程。QCM-D技术能够提供关于分子在固体表面吸附、相互作用和稳定性的宝贵见解。QCM-D技术可以实时监控石英晶体芯片的谐振频率随时间的变化。芯片的谐振频率取决于其质量，因此频率的变化可以揭示与芯片表面耦合的质量变化。同时，还可以实时监控系统的能量损失（耗散），从而量化芯片上涂层的粘弹性特性。这些频率和耗散的变化可用于分析分子与芯片表面的相互作用。QCM-D技术是由瑞典百欧林科技有限公司和瑞典查尔姆斯理工大学的科学家们共同开创的，自1999年第一台原型机问世以来，QSense耗散型石英晶体微天平产品系列不断扩大。如今，QSense已成为石英晶体微天平仪器的世界领导者，广泛应用于制药、生物技术、能源、电子、材料、食品、环境、化学、矿物加工等领域。数千篇文献证明了QSense技术的可靠性。以下将主要探讨QSense耗散型石英晶体微天平技术在药物相互作用方面的应用。（一）药物开发 QSense的纳克级别质量灵敏度为药物发现和开发提供了无限潜力。通过QSense进行的研究活动包括：1. 各种实验条件下，实时精确监测小分子药物与蛋白质、细胞膜和RNA的相互作用。[1]2. 蛋白质-蛋白质相互作用[2]3. 小分子与RNA相互作用时，RNA的结构变化[3]（二）药物递送 QSense已被证明是一种成本效益高、时间效率高的技术，特别适用于表征脂质纳米颗粒（LNP）及其药物递送特性方面。大量文献证明QSense可以用于：1. 分析血清蛋白与脂质纳米颗粒（LNP）的结合亲和力[4]2. 生物分子（如siRNA和mRNA）在LNP上的结合与释放[5]3. 将LNP递送到目标器官[6]4. 在无细胞环境中筛选血清蛋白与LNPs的结合亲和力[7]5. 分析LNPs的表面修饰[8]6. 脂质与生物活性分子（包括药物、DNA和siRNA）的相互作用[9]7. ApoE结合后对脂质成分分布和整体LNP结构的影响[24]8. 用于存储功能化LNP的纳米孔阵列[25]9. 提高LNPs核酸载荷递送效率的LNP配方[26]10. 使用cDNA将微泡固定到支持的脂质双层上[27]11. 稳定化立方体的嵌段共聚物与生物模拟脂质膜的相互作用[28]（三）药物-表面相互作用QSense在表征药物配方与表面相互作用方面具有重要意义，涵盖了生产、纯化、储存和递送过程中的多个方面。特别是评估生物制药药品在整个生命周期中的表面吸附/解吸附过程以及吸附层的结构变化。 典型案例包括：1. 药物与聚合物、玻璃、金属和金属氧化物、硅油等表面的相互作用[10]，[11]，[12]，[13]，[14]，[15]，[16]2. 辅料在减少药物-蛋白质吸附到表面上的效果[17]3. 配方条件（浓度、pH值、温度等）的影响； [18]4. 界面和界面应力在生物制品开发中的影响[19]药物-表面相互作用研究用QCM-D芯片列表塑料包装聚丙烯 (PP)聚氯乙烯 (PVC) 聚对苯二甲酸乙二醇酯 (PET) 聚甲基丙烯酸甲酯 (PMMA)聚乙烯 (PE) 低密度聚乙烯 (LDPE) 高密度聚乙烯 (HDPE) 线性低密度聚乙烯 (LLDPE)玻璃容器硼硅酸盐玻璃 苏打石灰玻璃包装袋环烯烃聚合物 (COP)环烯烃共聚物 (COC)过滤材料聚偏二氟乙烯 (PVDF) 聚四氟乙烯 (PTFE) 聚碳酸酯 (PC)聚醚砜 (PES) 聚对苯二甲酸乙二醇酯甘油改性 (PET-G)预充填注射器注射器 PDMS（硅油）其他相关材料聚苯乙烯 纤维素 不锈钢L605 SS2343（类似于美国标准316） 乙烯-醋酸乙烯共聚物 (EVA)尼龙 聚氨酯 醋酸纤维素 聚丙烯腈 (PAN) **注：多达 200 种芯片，可根据用户要求定制芯片表面（四）生物材料与人体组织的相互作用植入体和生物材料在人体内的生物相容性是它们成功发挥作用的关键。QSense提供了在分子层面对植入体表面或生物材料与人体血液和组织相互作用的体外分析。1. 各种眼部护理配方与黏蛋白/细胞膜表面的相互作用[20]。（五）生物传感器开发 QSense也被广泛用于蛋白质生物传感器和即时检测传感器等类型传感器的开发中。1. 蛋白质生物传感器[21]，[22]2. 即时检测传感器(Point-of-care sensors)[23]QSense Omni 耗散型石英晶体微天平QSense Omni 是由QCM-D技术的先驱者瑞典百欧林科技有限公司推动研发的最新耗散性石英晶体微天平型号，是QCM-D最新技术的集大成者。Omni比市面上任何一款QCM的灵敏度都要高，这使它能够量化和监测更小的分子、更快的过程，是研究生物过程非常理想的工具。QSense有超过100多种芯片表面材料和涂层可供选择，支持模拟真实生物环境和过程，以表征蛋白质吸附速率、薄膜形成、吸附层刚性、钙化、细胞附着等。QSense Omni 耗散型石英晶体微天平• 能够检测芯片表面微小至0.24 ng/cm²的变化• 更快的流体交换（5倍于上代产品），提供更快和更清晰的样品输送• 全系列自动化功能，最小化用户依赖性• 更简化的工作流程和全新直观的软件界面，使更广泛的用户可以更加容易地使用QCM-D。参考文献：[1] Small-molecule-mediated control of the anti-tumour activity and off-tumour toxicity of a supramolecular bispecific T cell engager Nat. 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