由基于PEG的制药辅助剂诱导的PEG化纳米颗粒的加速血液清除
Guifeng Miao1, Yuejian He1, Keren Lai1
1Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Biomaterials Research Center, School of Biomedical Engineering, Southern Medical University, 510515 Guangzhou, Guangdong Province, China.
概括
通常使用的基于PEG的辅助剂,如Poloxamer188,可以诱导抗PEG抗体,导致PEG化纳米药物的血液清理加速 (ABC),并降低癌症治疗的有效性. 波洛克萨默407的冲击是最小的.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 免疫学 免疫学 免疫学
背景情况:
- 基化纳米药物对于癌症治疗至关重要.
- 抗PEG抗体导致血液清理加速 (ABC),限制了纳米药物的有效性.
- 预先存在的抗PEG抗体的起源尚不清楚.
研究的目的:
- 调查是否常见的基于PEG的制药辅助剂诱导抗PEG抗体.
- 为了确定这些辅助剂对纳米药物的药理动力学和疗效的影响.
- 为了比较Poloxamer 188 (F68) 和Poloxamer 407 (F127) 的作用.
主要方法:
- 在F68和F127.7的预注射后评估了抗PEGIgG和IgM水平.
- 在体内评估了PEGylated脂质体纳米颗粒 (L-NPs) 的清除.
- 研究了F68和F127在服用前对PEGylated脂质体 doxorubicin (PLD) 抗瘤疗效的影响.
主要成果:
- F68显著增加了抗PEGIgG (3.8倍) 和IgM (32.2倍),导致L-NP快速清除.
- F127增加了IgM (7.7倍),但没有IgG,对L-NP循环的影响很小.
- F68治疗前减少了PLD抗瘤疗效超过三分之一,而F127的效果可以忽略不计.
结论:
- 基于PEG的制药辅助剂,特别是F68,可以诱导抗PEG抗体.
- 这种诱导导致PEGylated纳米药物的血液清除加速,影响其治疗效果.
- 临床策略必须考虑F68.8等辅助剂引发的潜在ABC效应.
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