← 返回

多瘤病毒阳性和阴性梅克尔细胞癌的分子特征

英文原题:Molecular Characterization of Polyomavirus-Positive and Negative Merkel Cell Carcinoma.

查看英文原题

Molecular Characterization of Polyomavirus-Positive and Negative Merkel Cell Carcinoma.

PubMed 2025/10/31(内容时间) Cancers (Basel) Q2 · IF 4.8(JCR 2025)

分数与星级只用于站内排序 —— 不代表疗效、安全性或个人适用性。

研究概要

MCC 的肿瘤发生和治疗反应超越了病毒状态。虽然突变分析证实了先前的发现,但对转录组和肿瘤微环境的评估提示了替代治疗靶点。

研究思路结论见上方概要

免疫检查点抑制剂(ICIs)是晚期 Merkel 细胞癌(MCC)的一线治疗,无论病毒状态如何。一线 ICIs 仅对一半患者提供持久获益,凸显了对替代疗法的需求。在本研究中,目标在于利用全外显子组测序(WES)和转录组测序(WTS)来区分与 ICI 应答相关的基因组改变。研究病毒阳性(VP)与病毒阴性(VN)-MCC 之间的差异基因组改变,以识别新的治疗靶点。

共95例MCC病例接受了WES和WTS。利用应用于WES的计算流程,我们确定了病毒状态和肿瘤突变负荷(TMB)。RNA-seq数据用于表征免疫微环境。

在95例MCC病例中,57例(60%)为VP-MCC,38例(40%)为VN-MCC。VN-MCC的中位TMB更高(27.5 vs. 1 Muts/Mb)。TP53、RB1、NOTCH1、KMTD2、KMT2C和PIK3CA突变主要见于VN-MCC。VN-MCC肿瘤中MAPK Pathway Activity Score、NK细胞浸润和免疫检查点基因CD276上调。VP-MCC与VN-MCC之间未发现OS差异,即使在接受ICIs后也是如此。

展开英文摘要原文

A total of 95 MCC cases underwent WES and WTS. Utilizing computational pipelines applied to WES, we identified viral status and tumor mutational burden (TMB). RNA-seq data was used to characterize the immune microenvironment.

Of 95 MCC cases, 57 (60%) were VP-MCC and 38 (40%) were VN-MCC. Median TMB was higher in VN-MCC (27.5 vs. 1 Muts/Mb). Mutations in TP53 , RB1 , NOTCH1 , KMTD2 , KMT2C , and PIK3CA were primarily found in VN-MCC. MAPK Pathway Activity Score, NK cell infiltration, and the immune checkpoint gene CD276 in VN-MCC tumors were upregulated. No overall survival (OS) difference was identified between VP and VN-MCC, even after ICIs.

MCC oncogenesis and treatment response transcend viral status. While mutational analysis confirms previous findings, assessment of the transcriptome and tumor microenvironment suggests alternate therapeutic targets.

论文信息

作者
Vaidya P、Wu S、Bryant D、Perry CJ、Prakash V、Lou E、Guo T、Brownell I
第一作者单位
Division of Hematology/Oncology, UC Irvine School of Medicine, Orange, CA 92868, USA.United States
通讯作者单位
Division of Hematology-Oncology, UC San Diego School of Medicine, La Jolla, CA 92093, USA.United States
期刊
Cancers2025 Oct 31
原文标识
PubMed 41228301 · DOI 10.3390/cancers17213508