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An Automated Radiosynthesis of [68Ga]Ga-FAPI-46 for Routine Clinical Use
Published on: May 24, 2024
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纤维细胞激活蛋白作为各种固体瘤大脑转移中的潜在异位目标
Michal Zubaľ1, Barbora Výmolová1, Ivana Matrasová1
1Laboratory of Cancer Cell Biology, Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University, Prague, Czech Republic.
Pathology
|July 7, 2023
概括
纤维细胞激活蛋白 (FAP) 在大脑转移中升级调节,出现在树皮细胞和瘤细胞上. 这一发现支持FAP作为改善患者结果的潜在治疗目标.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 免疫学 免疫学 免疫学
背景情况:
- 大脑转移严重影响患者的预后和生活质量.
- 在大脑转移的微环境中确定新的治疗点至关重要.
- 纤维细胞激活蛋白 (FAP) 是一种蛋白酶,存在于与瘤相关的 stromal 细胞中,使其成为潜在的治疗性点.
研究的目的:
- 量化纤维细胞激活蛋白 (FAP) 在大脑转移中的表达.
- 在大脑转移微环境中表达FAP的细胞的特征.
- 评估FAP作为大脑转移中潜在的治疗性标.
主要方法:
- 在大脑转移样本中对FAP表达 (蛋白质和酶活性) 的定量分析.
- FAP表达细胞的免疫组织化学表征.
- 通过各种原始来源的大脑转移来比较FAP表达.
主要成果:
- 与非瘤脑组织相比,FAP表达和活性在大脑转移中显著更高.
- FAP主要局限于癌症相关纤维细胞 (CAFs) 在富含原的血管化区域.
- 在黑色素瘤,肺癌,乳腺癌,癌和肉瘤转移的瘤细胞上也检测到了FAP.
- 根据原发性瘤的组织类型,没有观察到FAP水平或FAP+ stromal细胞的显著差异.
结论:
- 这项研究是第一个在大脑转移微环境中建立和描述FAP表达的研究.
- 在肌肉和瘤细胞上FAP的频繁上调突出了其作为治疗性点的潜力.
- 向FAP可能为管理大脑转移提供新的治疗策略.
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