在口腔状细胞癌中恶性转变的免疫瘤特征
Manar Elnaggar1, Risa Chaisuparat2, Ioana Ghita3
1Department of Oncology and Diagnostic Sciences, Division of Oral and Maxillofacial Pathology, University of Maryland School of Dentistry, Baltimore, MD, USA; Department of Oral Pathology, Faculty of Dentistry, Alexandria University, Alexandria, Egypt; Department of Oral Pathology, Faculty of Dentistry, Arab Academy for Science and Technology, El Alamein, Egypt.
这项研究确定了口腔状细胞癌 (OSCC) 瘤边缘的免疫特征. 研究结果显示,干扰素- (IFN-γ) 影响被编程的死亡-1 (PD-L1) 上调,为OSCC进展提供了新的见解.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 口腔状细胞癌 (OSCC) 是一种普遍存在的恶性瘤.
- 了解瘤边缘的免疫瘤 (IO) 景观对于破译恶性转变至关重要.
- 编程死亡联体-1 (PD-L1) 是一个关键的免疫检查点抑制剂,与瘤免疫逃避有关.
研究的目的:
- 为了识别口腔平细胞癌 (OSCC) 的外科瘤边缘 (TM) 的免疫瘤 (IO) 签名.
- 调查编程死亡-1 (PD-L1) 的作用及其在OSCC中的调节.
- 探索口腔潜在恶性细胞中PD-L1表达和干扰素- (IFN-γ) 之间的关系.
主要方法:
- 免疫组织化学被用来评估PD-L1表达在73个OSCC瘤边缘.
- 在对结合的瘤边缘和侵入性瘤样本上进行了NanoString 770 IO聚焦基因组分析.
- 干扰素 (IFN-γ) 诱导的PD-L1调节在口服潜在恶性细胞系 (OPMC) 中被研究.
主要成果:
- 在上皮边缘的PD-L1表达与底层免疫细胞的表达相关.
- 与侵袭性瘤相比,在瘤边缘观察到PD-L1和IFN-γ基因特征的下调.
- CD8 T 细胞和巨细胞在瘤边缘更为丰富,而特定的基因特征表明瘤边缘和侵入性瘤之间存在不同的分子概况. 在OPMC中,IFN-γ诱导的PD-L1上调.
结论:
- 干扰素- (IFN-γ) 在口腔潜在恶性细胞的PD-L1上调中起作用.
- 发现了新的免疫瘤 (IO) 转录特征,区分侵袭性OSCC与瘤边缘.
- 这些发现为OSCC的免疫微环境和恶性转变提供了新的见解.
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