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肝胆肿瘤中肿瘤特异性CircRNA衍生抗原肽的鉴定
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作者 Wenwen Wang Lili Ma +14 位作者 Zheng Xing Tinggan Yuan Jinxia Bao Yanjing Zhu Xiaofang Zhao Yan Zhao Yali Zong Yani Zhang Siyun Shen xinyao qiu Shuai Yang 王红阳 高栋 王鹏 陈磊 《Engineering》 SCIE EI CAS CSCD 2023年第3期159-170,共12页
基于肿瘤抗原的免疫治疗的应用受到验证免疫原性肽稀缺性的阻碍。本研究旨在研究环状RNA(circRNA)在肝胆肿瘤类器官中作为肿瘤抗原肽新来源的潜力。使用RNA测序(RNA-seq)和基于算法的评分工具,预测3950个翻译的肿瘤特异性环状RNA在27个... 基于肿瘤抗原的免疫治疗的应用受到验证免疫原性肽稀缺性的阻碍。本研究旨在研究环状RNA(circRNA)在肝胆肿瘤类器官中作为肿瘤抗原肽新来源的潜力。使用RNA测序(RNA-seq)和基于算法的评分工具,预测3950个翻译的肿瘤特异性环状RNA在27个类器官中产生18971个抗原肽。从抗原格局来看,11个氨基酸长度(mer)肽和人白细胞抗原(HLA)-A结合肽具有最高的免疫原性相关评分。在分析的3/5类器官中,有13个预测抗原肽通过质谱(MS)免疫肽组学被直接确认为HLA-A、HLA-B和HLA-C(HLA-ABC)结合肽。在流式细胞术和酶联免疫吸附试验(ELISA)中,由HLA-ABC分子呈递的circRNA衍生的肿瘤特异性肽刺激CD8(CD8)T细胞,显示CD107a干扰素γ(IFNγ)共表达和IFNγ分泌增加。免疫原性环状RNA衍生肽诱导的靶向类器官的细胞毒性T细胞活性在杀伤实验中得到验证。值得注意的是,来自circTBC1D15的抗原肽YGFNEILKK不仅被认为是类器官的HLA-ABC呈递肽,而且还显著降低了肿瘤类器官的存活率。本研究的发现强调了产生肿瘤抗原的一个关键亚群,这对靶向肿瘤特异性circRNA具有重要意义。 展开更多
关键词 Tumor antigen Patient-derived hepatobiliary tumor organoid Circular RNA Mass-spectrometry-based immunopeptidomics
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The Wnt/β-catenin signaling pathway in the tumor microenvironment of hepatocellular carcinoma 被引量:2
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作者 Kaiting Wang xinyao qiu +2 位作者 Yan Zhao Hongyang Wang Lei Chen 《Cancer Biology & Medicine》 SCIE CAS CSCD 2022年第3期305-318,共14页
The Wnt/β-catenin signaling pathway regulates many aspects of tumor biology,and many studies have focused on the role of this signaling pathway in tumor cells.However,it is now clear that tumor development and metast... The Wnt/β-catenin signaling pathway regulates many aspects of tumor biology,and many studies have focused on the role of this signaling pathway in tumor cells.However,it is now clear that tumor development and metastasis depend on the two-way interaction between cancer cells and their environment,thereby forming a tumor microenvironment(TME).In this review,we discuss how Wnt/β-catenin signaling regulates cross-interactions among different components of the TME,including immune cells,stem cells,tumor vasculature,and noncellular components of the TME in hepatocellular carcinoma.We also investigate their preclinical and clinical insights for primary liver cancer intervention,and explore the significance of using Wnt/β-catenin mutations as a biomarker to predict resistance in immunotherapy. 展开更多
关键词 Wnt/β-catenin signaling HCC tumor microenvironment IMMUNOTHERAPY
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A Noninvasive Approach to Evaluate Tumor Immune Microenvironment and Predict Outcomes in Hepatocellular Carcinoma
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作者 Jianmin Wu Wanmin Liu +9 位作者 xinyao qiu Jing Li Kairong Song Siyun Shen Lei Huo Lu Chen Mingshuang Xu Hongyang Wang Ningyang Jia Lei Chen 《Phenomics》 2023年第6期549-564,共16页
It is widely recognized that tumor immune microenvironment(TIME)plays a crucial role in tumor progression,metastasis,and therapeutic response.Despite several noninvasive strategies have emerged for cancer diagnosis an... It is widely recognized that tumor immune microenvironment(TIME)plays a crucial role in tumor progression,metastasis,and therapeutic response.Despite several noninvasive strategies have emerged for cancer diagnosis and prognosis,there are still lack of efective radiomic-based model to evaluate TIME status,let alone predict clinical outcome and immune checkpoint inhibitor(ICIs)response for hepatocellular carcinoma(HCC).In this study,we developed a radiomic model to evaluate TIME status within the tumor and predict prognosis and immunotherapy response.A total of 301 patients who underwent magnetic resonance imaging(MRI)examinations were enrolled in our study.The intra-tumoral expression of 17 immune-related molecules were evaluated using co-detection by indexing(CODEX)technology,and we construct Immunoscore(IS)with the least absolute shrinkage and selection operator(LASSO)algorithm and Cox regression method to evaluate TIME.Of 6115 features extracted from MRI,fve core features were fltered out,and the Radiomic Immunoscore(RIS)showed high accuracy in predicting TIME status in testing cohort(area under the curve=0.753).More importantly,RIS model showed the capability of predicting therapeutic response to anti-programmed cell death 1(PD-1)immunotherapy in an independent cohort with advanced HCC patients(area under the curve=0.731).In comparison with previously radiomicbased models,our integrated RIS model exhibits not only higher accuracy in predicting prognosis but also the potential guiding signifcance to HCC immunotherapy. 展开更多
关键词 Hepatocellular carcinoma Tumor immune microenvironment Radiomic Prognosis Immunotherapy response
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