乳腺癌细胞的化疗改变了对补充介导的opsonization和杀死细胞的易感性
Mohamed Hassan Nasraa1, Mahmoud Mohamed Bahgat2,3, Michael Kirschfinik4
1Department of Therapeutic Chemistry, Institute of Pharmaceutical and Drug Industries Research, The National Research Centre, Dokki, Cairo, 12622, Egypt. mhassan_1@yahoo.com.
化疗可以通过增加保护性蛋白质,使乳腺癌细胞抵抗免疫攻击. 然而,这也可能使他们更容易受到其他免疫反应的影响,这表明新的组合治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 癌细胞对免疫媒介杀伤的抵抗性使治疗策略复杂化.
- 需要新的生物标志物来监测治疗反应和指导治疗.
- 了解耐药性机制对于优化癌症护理至关重要.
研究的目的:
- 研究化疗对乳腺癌细胞易受免疫攻击的影响.
- 分析多克索鲁比辛和帕克利塔塞尔如何影响HER2阳性乳腺癌细胞中的补充依赖性细胞毒性 (CDC) 和opsonization.
- 探索化疗对组合免疫疗法的潜在漏洞.
主要方法:
- 在BT-474和SKBR-3乳腺癌细胞系中,用多克索鲁比辛或帕克利塔克塞尔进行了24小时和48小时的预治疗.
- 评估了膜结合补充调节蛋白 (mCRPs) 的表达.
- 评估了H (fH) 因素的结合,IC3b的 opsonization,以及由CDC杀死细胞.
主要成果:
- 化疗预处理上调了mCRPs (CD46,CD55,CD59) 和增加了fH结合,减少了CDC介导的细胞溶解.
- 在药物暴露48小时后,iC3b的opsonization得到了增强.
- 短期化疗暴露增加了对CDC的抵抗力,但增强了opsonization,可能增加了对ADCC和其他免疫攻击的脆弱性.
结论:
- 化疗可以对乳腺癌细胞产生双重效应,增强对CDC的抵抗力,同时促进opsonization.
- 化疗后免疫消除格局的这种转变为组合免疫疗法提供了机会.
- 针对这些改变的免疫相互作用可以改善乳腺癌治疗的治疗结果.
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