在中枢神经系统瘤中对抗体-药物结合位的系统性表征
Shannon Coy1,2,3, Jong Suk Lee1,2, Sabrina J Chan1,2,4
1Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts, USA.
Neuro-oncology
|October 23, 2023
概括
抗体-药物合物 (ADCs) 对中枢神经系统 (CNS) 瘤具有前景,其中许多表达标,如HER3,B7-H3和NECTIN4. 在中枢神经系统癌症中对ADC进行进一步的临床试验是有必要的.
科学领域:
- 神经瘤学神经瘤学
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 抗体-药物合物 (ADCs) 通过杆将细胞毒药物向向表达抗原的癌细胞.
- 几种ADC被批准用于各种恶性瘤,向HER2,TROP2和NECTIN4.4等抗原.
- 在转移性乳腺癌中HER2向ADC的最近成功表明,低向表达可能足以有效,但中枢神经系统瘤向表达在很大程度上没有特征.
研究的目的:
- 综合评估各种中枢神经系统 (CNS) 瘤亚型中潜在的抗体-药物联合体 (ADC) 标的表达.
- 确定已确定的ADC标是否存在于中枢神经系统瘤上,在可能接受向治疗的水平上.
主要方法:
- 对公开可用的RNA测序和蛋白质组数据的分析,分别来自188个和356个中枢神经系统瘤.
- 使用RNA表达数据集对14个潜在的ADC标进行评估.
- 在575个中枢神经系统瘤中对HER2,HER3,NECTIN4,TROP2,CLDN6,CLDN18.2和CD276/B7-H3蛋白质表达的免疫组织化学评估,覆盖多个亚型.
主要成果:
- 在中枢神经系统瘤中观察到ADC标蛋白的亚型特定表达模式.
- 在大多数瘤类型中,HER3,B7-H3和NECTIN4被广泛表达.
- 特别强烈的HER2表达在表皮瘤中,HER2 (弱中度) 在脑膜瘤中,B7-H3在喉瘤中,CLDN6在AT/RT中,以及TROP2在非洲和非洲的特定地区.
- 质母细胞瘤表现出有限的亚型特异性标记物表达,表明需要新的点发现.
结论:
- 中枢神经系统瘤显示异质但亚型特定的ADC标的表达.
- 像HER3,B7-H3,NECTIN4和HER2这样的标的存在表明,抗体-药物合物 (ADC) 可能是各种中枢神经系统瘤的可行的治疗策略.
- 基于这些目标表达特征,研究中枢神经系统恶性瘤的ADC的临床试验是有必要的.
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