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Xu J, Yu B, Wang F, Yang J. Single-cell RNA sequencing to map tumor heterogeneity in gastric carcinogenesis paving roads to individualized therapy. Cancer Immunol Immunother 2024; 73:233. [PMID: 39271545 PMCID: PMC11399521 DOI: 10.1007/s00262-024-03820-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Accepted: 08/27/2024] [Indexed: 09/15/2024]
Abstract
Gastric cancer (GC) is a highly heterogeneous disease with a complex tumor microenvironment (TME) that encompasses multiple cell types including cancer cells, immune cells, stromal cells, and so on. Cancer-associated cells could remodel the TME and influence the progression of GC and therapeutic response. Single-cell RNA sequencing (scRNA-seq), as an emerging technology, has provided unprecedented insights into the complicated biological composition and characteristics of TME at the molecular, cellular, and immunological resolutions, offering a new idea for GC studies. In this review, we discuss the novel findings from scRNA-seq datasets revealing the origin and evolution of GC, and scRNA-seq is a powerful tool for investigating transcriptional dynamics and intratumor heterogeneity (ITH) in GC. Meanwhile, we demonstrate that the vital immune cells within TME, including T cells, B cells, macrophages, and stromal cells, play an important role in the disease progression. Additionally, we also overview that how scRNA-seq facilitates our understanding about the effects on individualized therapy of GC patients. Spatial transcriptomes (ST) have been designed to determine spatial distribution and capture local intercellular communication networks, enabling a further understanding of the relationship between the spatial background of a particular cell and its functions. In summary, scRNA-seq and other single-cell technologies provide a valuable perspective for molecular and pathological disease characteristics and hold promise for advancing basic research and clinical practice in GC.
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Affiliation(s)
- Jiao Xu
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 West Yanta Road., Xi'an, 710061, Shaanxi, People's Republic of China
| | - Bixin Yu
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 West Yanta Road., Xi'an, 710061, Shaanxi, People's Republic of China
| | - Fan Wang
- Phase I Clinical Trial Research Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, People's Republic of China.
| | - Jin Yang
- Precision Medicine Center, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 West Yanta Road., Xi'an, 710061, Shaanxi, People's Republic of China.
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 West Yanta Road., Xi'an, 710061, Shaanxi, People's Republic of China.
- Phase I Clinical Trial Research Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, People's Republic of China.
- Cancer Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, People's Republic of China.
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Chong X, Madeti Y, Cai J, Li W, Cong L, Lu J, Mo L, Liu H, He S, Yu C, Zhou Z, Wang B, Cao Y, Wang Z, Shen L, Wang Y, Zhang X. Recent developments in immunotherapy for gastrointestinal tract cancers. J Hematol Oncol 2024; 17:65. [PMID: 39123202 PMCID: PMC11316403 DOI: 10.1186/s13045-024-01578-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Accepted: 07/18/2024] [Indexed: 08/12/2024] Open
Abstract
The past few decades have witnessed the rise of immunotherapy for Gastrointestinal (GI) tract cancers. The role of immune checkpoint inhibitors (ICIs), particularly programmed death protein 1 (PD-1) and PD ligand-1 antibodies, has become increasingly pivotal in the treatment of advanced and perioperative GI tract cancers. Currently, anti-PD-1 plus chemotherapy is considered as first-line regimen for unselected advanced gastric/gastroesophageal junction adenocarcinoma (G/GEJC), mismatch repair deficient (dMMR)/microsatellite instability-high (MSI-H) colorectal cancer (CRC), and advanced esophageal cancer (EC). In addition, the encouraging performance of claudin18.2-redirected chimeric antigen receptor T-cell (CAR-T) therapy in later-line GI tract cancers brings new hope for cell therapy in solid tumour treatment. Nevertheless, immunotherapy for GI tumour remains yet precise, and researchers are dedicated to further maximising and optimising the efficacy. This review summarises the important research, latest progress, and future directions of immunotherapy for GI tract cancers including EC, G/GEJC, and CRC.
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Affiliation(s)
- Xiaoyi Chong
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Yelizhati Madeti
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Jieyuan Cai
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Wenfei Li
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Lin Cong
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Jialin Lu
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Liyang Mo
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Huizhen Liu
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Siyi He
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Chao Yu
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Zhiruo Zhou
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Boya Wang
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Yanshuo Cao
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Zhenghang Wang
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
| | - Lin Shen
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China
| | - Yakun Wang
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China.
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China.
| | - Xiaotian Zhang
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Peking University Cancer Hospital and Institute, 52 Fucheng Road, Hai-Dian District, Beijing, 100142, China.
- State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Oncology, Peking University Cancer Hospital and Institute, Beijing, 100142, China.
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Choi S, Jo JC, Lee YJ, Chae SW, Cha HJ. Immunophenotypic classification regarding prognosis in peripheral T cell lymphoma, NOS, and nodal T follicular helper T cell lymphoma, angioimmunoblastic-type. Ann Hematol 2024; 103:2429-2443. [PMID: 38814447 DOI: 10.1007/s00277-024-05817-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 05/26/2024] [Indexed: 05/31/2024]
Abstract
This study aimed to determine the clinicopathological predictive factors of peripheral T-cell lymphoma, not otherwise specified (PTCL, NOS), and nodal T-follicular helper cell lymphoma, angioimmunoblastic-type (nTFH, AI-type). In this single-centered, retrospective study, medical records of 59 patients who were diagnosed with PTCL, NOS, or nTFH, AI-type from March 2007 to September 2022 were reviewed. The clinicopathological variables, including immunohistochemistry(IHC) subgroups, distinguishing TBX21 from the GATA3 subgroups were analyzed. Overall, 28 patients (75.7%) in the TBX21 group were PTCL, NOS. There were 9 (24.3%) patients in the GATA3 group. In univariable analyses, lymphoma subtype, age, and performance status were associated with progression-free survival (PFS), and overall survival (OS). In multivariable analyses, lymphoma subtype, and performance status were related to PFS and OS (P = 0.012, P < 0.001, P = 0.006, and P < 0.001, respectively). The GATA3 subgroup tended to have a worse prognosis in univariable analyses; however, it became more insignificant in multivariable when lymphoma subtype and performance status were adjusted (P = 0.065, P = 0.180, P = 0.972, and P = 0.265, respectively). The double-positive group showed variable prognoses of better PFS and worse OS. PD-1 and PD-L1 were associated with the EBV in situ hybridization (P = 0.027, and P = 0.005), and PD-1 was associated with CD30 expression (P = 0.043). This study demonstrated the potential of IHC classification to predict prognosis for PTCL, NOS, as well as nTFH AI-type, although further validation is necessary. Treatments targeting CD30, PD-1, and PD-L1 appear promising for lymphoma treatment.
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Affiliation(s)
- Soyeon Choi
- Department of Pathology, National Cancer Center, Goyang-si, Korea
| | - Jae-Cheol Jo
- Department of Hematology and Oncology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Yoo Jin Lee
- Department of Hematology and Oncology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Seoung Wan Chae
- Department of Pathology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hee Jeong Cha
- Department of Pathology, Ulsan University Hospital, University of Ulsan College of Medicine, Daehakbyungwonro 25, Dong-gu, Ulsan, 44033, Korea.
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Li JB, Lai MY, Lin ZC, Guan WL, Sun YT, Yang J, Wang WX, Yang ZR, Qiu MZ. The optimal threshold of PD-L1 combined positive score to predict the benefit of PD-1 antibody plus chemotherapy for patients with HER2-negative gastric adenocarcinoma: a meta-analysis. Cancer Immunol Immunother 2024; 73:132. [PMID: 38753055 PMCID: PMC11098986 DOI: 10.1007/s00262-024-03726-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 05/03/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND Immune checkpoint inhibitors (ICIs) combined with chemotherapy have become the first-line treatment of metastatic gastric and gastroesophageal adenocarcinomas (GEACs). This study aims to figure out the optimal combined positive score (CPS) cutoff value. METHODS We searched for randomized phase III trials to investigate the efficacy of ICIs plus chemotherapy for metastatic GEACs compared with chemotherapy alone. Pooled analyses of hazard ratios (HRs) based on PD-L1 expression were performed. RESULTS A total of six trials (KEYNOTE-062, KEYNOTE-590, KEYNOTE-859, ATTRACTION-04, CheckMate 649, and ORIENT-16) were included, comprising 5,242 patients. ICIs plus chemotherapy significantly improved OS (HR: 0.79, 95% CI 0.72-0.86 in global patients; HR: 0.75, 95% CI 0.57-0.98 in Asian patients) and PFS (HR: 0.74, 95% CI 0.68-0.82 in global patients; HR: 0.64, 95% CI 0.56-0.73 in Asian patients) compared with chemotherapy alone. The differences in OS (ratio of HR: 1.05, 95% CI 0.79-1.40; predictive value: - 5.1%) and PFS (ratio of HR: 1.16, 95% CI 0.98-1.36; predictive value: - 13.5%) were not statistically significant between the global and Asian patients. Subgroup analyses indicated that the optimal CPS threshold was at ≥ 5 for OS and ≥ 10 for PFS with the highest predictive values. CONCLUSIONS The benefit derived from ICIs plus chemotherapy is similar between Asian and global GEAC patients. However, those with a PD-L1 CPS < 5 or CPS < 10 may not have significant benefits from ICIs therapy. Therefore, it is advisable to routinely assess PD-L1 expression in GEAC patients considered for ICIs treatment.
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Affiliation(s)
- Ji-Bin Li
- Department of Clinical Research, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Ming-Yu Lai
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Zhuo-Chen Lin
- Department of Medical Records, The First Affiliated Hospital, Sun Yat‑Sen University, Guangzhou, People's Republic of China
| | - Wen-Long Guan
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Yu-Ting Sun
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Jing Yang
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
| | - Wen-Xuan Wang
- Department of Clinical Research, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China
- School of Public Health, Sun Yat-Sen University, Guangzhou, People's Republic of China
| | - Zhi-Rong Yang
- Center for Biomedical Information Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, People's Republic of China
| | - Miao-Zhen Qiu
- Department of Medical Oncology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, 651 Dongfeng Road East, Guangzhou, 510060, People's Republic of China.
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Deng C. Revealing the secret behind Epstein-Barr virus-specific tumor immune contexture. Cancer Commun (Lond) 2024; 44:491-494. [PMID: 38446537 PMCID: PMC11024679 DOI: 10.1002/cac2.12529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/07/2024] Open
Affiliation(s)
- Chu‐Xia Deng
- Cancer CenterFaculty of Health SciencesUniversity of MacauMacauP. R. China
- MOE Frontier Science Center for Precision OncologyUniversity of MacauMacauP. R. China
- Translational Research Center, Zhuhai UM Science & Technology Research InstituteZhuhaiGuangdongP. R. China
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Wang J, Cheng Y, Wang Y, Liu H, Wu S, Tian G, Qu J, Qu X. Case report: A case of rare metastasis of gastric cancer to the axillary lymph node metastasis treated with combination immunotherapy. Front Immunol 2024; 15:1331506. [PMID: 38404578 PMCID: PMC10884146 DOI: 10.3389/fimmu.2024.1331506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/29/2024] [Indexed: 02/27/2024] Open
Abstract
Lymph node (LN) metastasis is a common mode of metastasis in advanced gastric cancer (GC), while axillary LN metastasis infrequently occurs in GC. There are few reports on this rare type of metastasis - especially its clinicopathological features - and systemic treatment are unclear. We describe a case of GC with extensive metastasis, including the rare axillary LN metastasis. The patient achieved partial response of optimal efficacy, who was treated with combination immunotherapy as second-line treatment for nearly two years. The potential mechanisms were revealed by clinical and immune characteristics, such as high expression of PD-L1, high tumor mutational burden (TMB-H), Epstein-Barr virus (EBV) positive and CD8+ tumor-infiltrating lymphocyte positive.
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Affiliation(s)
- Jin Wang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China
- Provincial Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
- Clinical Cancer Research Center of Shenyang, The First Hospital of China Medical University, Shenyang, China
| | - Yu Cheng
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China
- Provincial Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
- Clinical Cancer Research Center of Shenyang, The First Hospital of China Medical University, Shenyang, China
| | - Yulin Wang
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China
- Provincial Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
- Clinical Cancer Research Center of Shenyang, The First Hospital of China Medical University, Shenyang, China
| | - Hengxin Liu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China
- Provincial Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
- Clinical Cancer Research Center of Shenyang, The First Hospital of China Medical University, Shenyang, China
| | - Shuang Wu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China
- Provincial Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
- Clinical Cancer Research Center of Shenyang, The First Hospital of China Medical University, Shenyang, China
| | - Guangwei Tian
- Department of Radiation Oncology, The First Hospital of China Medical University, Shenyang, China
| | - Jinglei Qu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China
- Provincial Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
- Clinical Cancer Research Center of Shenyang, The First Hospital of China Medical University, Shenyang, China
| | - Xiujuan Qu
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China
- Provincial Key Laboratory of Anticancer Drugs and Biotherapy of Liaoning Province, The First Hospital of China Medical University, Shenyang, China
- Clinical Cancer Research Center of Shenyang, The First Hospital of China Medical University, Shenyang, China
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Li X, Xiong F, Hu Z, Tao Q, Yang Y, Qiao X, Peng C, Jiang Y, Han M, Dong K, Hua Y, Zhang W, Xu M, Long W, Xiao Y, Wang D. A novel biomarker associated with EBV infection improves response prediction of immunotherapy in gastric cancer. J Transl Med 2024; 22:90. [PMID: 38254099 PMCID: PMC10804498 DOI: 10.1186/s12967-024-04859-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Novel biomarkers are required in gastric cancer (GC) treated by immunotherapy. Epstein-Barr virus (EBV) infection induces an immune-active tumor microenvironment, while its association with immunotherapy response is still controversial. Genes underlying EBV infection may determine the response heterogeneity of EBV + GC. Thus, we screened hub genes associated with EBV infection to predict the response to immunotherapy in GC. METHODS Prognostic hub genes associated with EBV infection were screened using multi-omic data of GC. EBV + GC cells were established and confirmed by EBV-encoded small RNA in situ hybridization (EBER-ISH). Immunohistochemistry (IHC) staining of the hub genes was conducted in GC samples with EBER-ISH assay. Infiltrating immune cells were stained using immunofluorescence. RESULTS CHAF1A was identified as a hub gene in EBV + GC, and its expression was an independent predictor of overall survival (OS). EBV infection up-regulated CHAF1A expression which also predicted EBV infection well. CHAF1A expression also predicted microsatellite instability (MSI) and a high tumor mutation burden (TMB). The combined score (CS) of CHAF1A expression with MSI or TMB further improved prognostic stratification. CHAF1A IHC score positively correlated with the infiltration of NK cells and macrophages M1. CHAF1A expression alone could predict the immunotherapy response, but its CS with EBV infection, MSI, TMB, or PD-L1 expression showed better effects and improved response stratification based on current biomarkers. CONCLUSIONS CHAF1A could be a novel biomarker for immunotherapy of GC, with the potential to improve the efficacy of existing biomarkers.
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Affiliation(s)
- Xiaoqin Li
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Fen Xiong
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Zhangmin Hu
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Qing Tao
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Yufei Yang
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Xuehan Qiao
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Chen Peng
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Yuchun Jiang
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Miao Han
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Kebin Dong
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Yi Hua
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Wei Zhang
- Department of Gastroenterology, Digestive Disease Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Min Xu
- Department of Gastroenterology, Digestive Disease Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China
| | - Weiguo Long
- Department of Pathology, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China.
| | - Yichuan Xiao
- CAS Key Laboratory of Tissue Microenvironment and Tumor, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031, China.
| | - Deqiang Wang
- Department of Oncology, Digestive Disease Institute&Cancer Institute of Jiangsu University, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, China.
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