WuXi TIDES 拥有一支专业的分析团队,在寡核苷酸原料药和制剂分析方面拥有丰富的经验和专业知识,覆盖从临床前开发到商业化生产的所有阶段。
我们的寡核苷酸分析服务配备了先进仪器,并与原料药工艺开发团队位于同一基地,可为您的寡核苷酸药物开发提供定制、灵活和一体化的分析解决方案,从而简化开发流程。
分析开发
原料药分析服务
- 寡核苷酸原料药专用的分析方法开发(纯度、测序)和通用方法的适用性研究
- 强制降解研究,杂质鉴定和定量
- 研发条件下的放行测试和稳定性研究
- 标准品和杂质对照品的标化和复测
- 理化性质研究及结构解析
- 微生物安全: 内毒素限度和定量测试、生物负载和微生物限度测试、微生物菌株鉴定
制剂分析服务
- 容器封闭完整性测试(CCIT),包括真空衰减法、高压泄漏检测等定量测试以及微生物挑战、示踪液等定性测试。
- 可见异物和颗粒物检查,通过流动成像 (MFI) 确认,并通过 IR/Raman/EDX 、渗透压进行识别
- 通过 LC-MS 测定纯度,包括利用 Q-TOF HRMS 和四极杆 LC-MS 对较难分析的注射剂杂质进行鉴别和定量
- 无菌和微生物鉴定
质量控制
- 方法确认和验证(IND/NDA 、商业)
- 根据 USP <1224>对经过 GMP 验证的方法进行正式转移
- 工艺流程全覆盖的放行检测(原材料、试剂、 中间体、原料药和制剂成品)
- 符合 ICH 要求的加速和长期稳定性研究
特殊能⼒
- 工艺相关杂质鉴别:二维高效液相色谱结合 QTOF 高分辨质谱
- 通过串联 LC-MS/MS 进行序列确认
- 通过 31P NMR 测定寡核苷酸骨架组分
关键设备
- 色谱: UPLC、 HPLC、GC 、IC 、2D-UPLC、 HPLC-CAD
- 质谱: QTOF、 MALDI-TOF、 LC-Orbitrap、 LC-MS、 LC-QQQ、2D LC-MS、GC-MS
- 理化性质测试: FT-IR, UV-Vis XRPD, DVS, DSC, TGA, polarimetry, 400/600 MHz NMR, MEC, Tm, CD
- 元素分析: ICP-OES, ICP-MS, elemental analysis (CHN)
Case Study 1: Purity and Impurities by LC-UV-HRMS (tRNA/gRNA)
For the impurites that are hard to be separated from or co-eluting with FLP in HPLC-UV, MS purity is utilized for the qualificaiton and quantitation of impurities in tRNA, sgRNA PMO/PPMO and ASO analysis.
Case Study 2: Purity and Impurities by LC-UV (sgRNA-100mer)
Evolution of resolution of HPLC purity method for sgRNA. From separation capability of n-8 and n+4 impurities initially to n-2 and n+1 impurities by current method at WuXi TIDES.
Case Study 3: Sequencing of PPMO
The determination of the Peptide-PMO sequence involves sequencing both the peptide and PMO components of the PPMO, as well as the conjugation process between the two intermediates.
Case Study 4: Systematically Screen Purity Methods for Improved Resolution
Both Ion-Exchange Chromatography (IEX) and Reverse-Phase HPLC (RP-HPLC) are utilized for the purity and impurity analysis of PMO product. These orthogonal chromatography techniques provide an accurate depiction of the product’s quality.
- WuXi STA has ability to screen methods systematically to get a better purity method with more resolved impurity peaks.
- IEX purity method and RP purity method display different impurity profiles.