新辅助疗法不会降低表皮生长因子受体 (EGFR) 表达或EGFR向光在软组织肉瘤的小鼠模型
Samuel S Streeter1,2, Xiaochun Xu3, Kendra A Hebert3
1Department of Orthopaedics, Dartmouth Health, One Medical Center Drive, Lebanon, NH, 03756, USA. samuel.stewart.streeter@dartmouth.edu.
Molecular imaging and biology
|December 27, 2023
概括
新辅助疗法不会对软组织肉瘤异体移植中的ABY-029光产生负面影响. 这种皮生长因子受体 (EGFR) 向的探针仍然是光导向手术的可行选择,正在等待人类试验.
科学领域:
- 在瘤学瘤学.
- 分子成像学分子成像学
- 手术瘤学手术瘤学
背景情况:
- ABY-029是一种以表皮生长因子受体 (EGFR) 为向的Affibody,具有近红外光,用于光引导的肉瘤手术进行研究.
- 之前的研究使用ABY-029治疗以前未经治疗的瘤,但新辅助化疗 (CTx) 和放射治疗 (RTx) 在人类肉瘤治疗中很常见.
- 新辅助疗法对EGFR表达和软组织肉瘤中的ABY-029光的影响以前未被评估.
研究的目的:
- 评估新辅助化疗 (CTx) 和放射治疗 (RTx) 对表皮生长因子受体 (EGFR) 表达的作用.
- 为了评估CTx和RTx对ABY-029的光效应的影响,一个针对EGFR的成像探针.
- 确定ABY-029适用于经过新辅助治疗的软组织肉瘤的光引导手术的适用性.
主要方法:
- 98只免疫缺陷小鼠接受软组织肉瘤外移植,被分配到对照组,只有CTx,只有RTx,或CTx跟随RTx组.
- 在ABY-029注射后,对包括瘤在内的各种组织进行了ex vivo光成像.
- 免疫组织化学被用来量化EGFR,CD31和SMA的表达,通过统计分析将分子表达和光相关联.
主要成果:
- 新辅助疗法在异种移植中没有显著改变EGFR表达水平.
- 平均组织光,包括瘤光,并没有受到CTx或RTx的广泛影响.
- 在瘤光和EGFR表达之间观察到显著的正相关性 (r=0.26,p=0.01).
结论:
- 该研究表明,新辅助疗法 (CTx和RTx) 不会对ABY-029作为EGFR向光探针的性能产生不利影响.
- ABY-029光与EGFR表达相关,支持其作为生物标记物的潜力.
- 这些发现表明ABY-029在软组织肉瘤的光导向手术中具有潜在的实用性,即使是在新辅助治疗后,尽管人类验证是必要的.
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