帕博利珠单抗联合二甲双胍治疗转移性头颈部癌的 II 期可行性研究
A Phase II Feasibility Study Combining Pembrolizumab and Metformin in Patients with Metastatic Head and Neck Cancer.
二甲双胍联合帕博利珠单抗耐受性良好,仅出现轻度胃肠道不良事件,并展现出有前景的活性,值得在随机试验中进一步研究。
CELL INTELLIGENCE · 肿瘤细胞治疗研究
肿瘤细胞治疗研究
英文原题:Co-Stimulatory and Immune Checkpoint Molecule Expression on Peripheral Immune Cells Differs Age Dependently Between Healthy Donors and Patients with Head and Neck Squamous Cell Carcinoma.
Co-Stimulatory and Immune Checkpoint Molecule Expression on Peripheral Immune Cells Differs Age Dependently Between Healthy Donors and Patients with Head and Neck Squamous Cell Carcinoma.
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本研究揭示了共刺激分子/ICM 表达随患者年龄的变化,并发现 HNSCC 患者大多数免疫检查点分子随年龄增长而增加。这一新证据对于在日益重要的检查点抑制领域,甚至在老年人群中确保个体化治疗方法具有重要价值。
对TIL(肿瘤浸润淋巴细胞)及头颈部鳞状细胞癌(HNSCC)患者外周免疫细胞上免疫检查点分子(ICMs)等耗竭标志物表达的分析备受关注,因为它揭示了患者免疫状态和免疫调节有效性的信息。然而,关于年龄依赖性表达的数据尚缺乏。在此,我们证明大多数ICMs的增加与年龄和疾病相关,提示免疫检查点调节可作为老年HNSCC患者治疗的循证选择。
外周血单个核细胞(PBMCs)(健康人:n = 30,年龄范围21至84岁/HNSCC:n = 37,年龄范围37至94岁)按照标准方案(密度梯度分离)后通过流式细胞术进行分析。使用CD4和CD8作为骨架标记物以及共刺激分子如CD137、OX40、GITR和CD27或ICM如PD-1、CTLA4、BTLA、LAG3或TIM3,使用Gallios流式细胞仪(Beckman Coulter, Brea, CA, USA)进行流式细胞术。
我们发现,随着健康供体年龄增长,其PBMCs上的ICM表达出现具有统计学意义的下降。然而,在HNSCC中,ICM的表达显著升高(CD4 + T细胞上的PD1:p = 0.001),同时我们发现共刺激分子表达下降(例如,CD4 + T细胞和CD39 + T细胞上的CD27:分别为p = 0.003和p = 0.009)。HPV阴性HNSCC的免疫细胞中,CD8 +、CD4 + 和CD39 + T细胞上的CD27表达随年龄增长出现显著下降(分别为p = 0.0426、p = 0.0078和p = 0.0078)。
We found a statistically significant decreased ICM expression on the PBMCs of healthy donors with increasing age. However, the expression of ICMs in HNSCC was significantly increased (PD1 on CD4 + T cells: p = 0.001), while we found a decreased co-stimulatory molecule expression (e.g., CD27 on CD4 + T cells and CD39 + T cells: p = 0.003 and p = 0.009, respectively). Immune cells of HPV neg HNSCC have a significant age-dependent decrease in CD27 expression on CD8 + , CD4 + , and CD39 + T cells ( p = 0.0426, p = 0.0078, and p = 0.0078, respectively).
This study sheds light on the changing co-stimulatory molecule/ICM expression regarding the patient's age and reveals an increase in most immune checkpoint molecules for HNSCC patients according to their age. This new evidence is valuable in ensuring individualized therapeutic approaches in the increasingly relevant field of checkpoint inhibition, even in old age.
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