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Eskandarion MR, Eskandarieh S, Tutunchi S, Shakoori Farahani A, Shirkoohi R. Investigating the role of circulating tumor cells in gastric cancer: a comprehensive systematic review and meta-analysis. Clin Exp Med 2024; 24:59. [PMID: 38554188 PMCID: PMC10981629 DOI: 10.1007/s10238-024-01310-6] [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: 07/13/2023] [Accepted: 02/19/2024] [Indexed: 04/01/2024]
Abstract
Investigating the role of circulating tumor cells (CTCs) and their characteristics is still controversial in patients with gastric cancer (GC). Therefore, in this study, to provide a comprehensive review and meta-analyses of the literature on association of CTCs with gastric cancer, Scopus, Web of Science, Embase, and Medline were searched for systematic reviews and meta-analyses conducted during February 2022 using the keywords. Risk of bias, hazard ratios (HRs), and risk differences (RD) were assessed. Forty-five studies containing 3,342 GC patients from nine countries were assessed. The overall prevalence of CTC in GC was 69.37% (60.27, 77.78). The pooled result showed that increased mortality in GC patients was significantly associated with positive CTCs, poor overall survival (HR = 2.73, 95%CI 2.34-3.24, p < 0.001), and progression-free survival rate (HR = 2.78, 95%CI 2.01-3.85, p < 0.001). Subgroup analyses regarding markers, detection methods, treatment type, presence of distance metastasis, presence of lymph node metastasis, and overall risk of bias showed significant associations between the groups in terms of the incidence rates of CTCs, OS, and PFS. In addition, the results of risk differences based on sampling time showed that the use of the cell search method (RD: - 0.19, 95%CI (- 0.28, - 0.10), p < 0.001), epithelial marker (RD: - 0.12, 95%CI (- 0.25, 0.00), p 0.05) and mesenchymal markers (RD: - 0.35, 95%CI (- 0.57, - 0.13), p 0.002) before the treatment might have a higher diagnostic power to identify CTCs and also chemotherapy treatment (RD: - 0.17, 95%CI (- 0.31, - 0.03), p 0.016) could significantly reduce the number of CTCs after the treatment. We also found that the risk differences between the clinical early and advanced stages were not statistically significant (RD: - 0.10, 95%CI (- 0.23, 0.02), P 0.105). Also, in the Lauren classification, the incidence of CTC in the diffuse type (RD: - 0.19, 95%CI (- 0.37, - 0.01), P0.045) was higher than that in the intestinal type. Meta-regression analysis showed that baseline characteristics were not associated with the detection of CTCs in GC patients. According to our systematic review and meta-analysis, CTCs identification may be suggested as a diagnostic technique for gastric cancer screening, and the outcomes of CTC detection may also be utilized in the future to create personalized medicine programs.
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Affiliation(s)
| | - Sharareh Eskandarieh
- Multiple Sclerosis Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Tutunchi
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Shakoori Farahani
- Medical Genetics Ward, IKHC Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Shirkoohi
- Cancer Research Center, Cancer Institute, IKHC, Tehran University of Medical Sciences, Tehran, Iran.
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Li J, Zhu T, Jiang Y, Zhang Q, Zu Y, Shen X. Microfluidic printed 3D bioactive scaffolds for postoperative treatment of gastric cancer. Mater Today Bio 2024; 24:100911. [PMID: 38188649 PMCID: PMC10770549 DOI: 10.1016/j.mtbio.2023.100911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/04/2023] [Accepted: 12/09/2023] [Indexed: 01/09/2024] Open
Abstract
Tumor recurrence and tissue regeneration are two major challenges in the postoperative treatment of cancer. Current research hotspots are focusing on developing novel scaffold materials that can simultaneously suppress tumor recurrence and promote tissue repair. Here, we propose a microfluidic 3D-printed methacrylate fish gelatin (F-GelMA@BBR) scaffold loaded with berberine (BBR) for the postoperative treatment of gastric cancer. The F-GelMA@BBR scaffold displayed a significant killing effect on gastric cancer MKN-45 cells in vitro and demonstrated excellent anti-recurrence efficiency in gastric cancer postoperative models. In vitro experiments have shown that F-GelMA@BBR exhibits significant cytotoxicity on gastric cancer cells while maintaining the cell viability of normal cells. The results of in vivo experiments show that F-GelMA@BBR can significantly suppress the tumor volume to 49.7 % of the control group. In addition, the scaffold has an ordered porous structure and good biocompatibility, which could support the attachment and proliferation of normal cells to promote tissue repair at the tumor resection site. These features indicated that such scaffold material is a promising candidate for postoperative tumor treatment in the practical application.
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Affiliation(s)
- Jiante Li
- Department of Anorectal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Tianru Zhu
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yiwei Jiang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Qingfei Zhang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China
- The Key Laboratory of Pediatric Hematology and Oncology Diseases of Wenzhou, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Yan Zu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, 325001, China
| | - Xian Shen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325035, China
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Xia F, Zhang Q, Ndhlovu E, Zhang M, Zou Y. A Novel Nomogram to Predict Resectable Gastric Cancer Based on Preoperative Circulating Tumor Cell. Clin Transl Gastroenterol 2024; 15:e00561. [PMID: 36727697 PMCID: PMC10887436 DOI: 10.14309/ctg.0000000000000561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 11/21/2022] [Indexed: 02/03/2023] Open
Abstract
INTRODUCTION Circulating tumor cells (CTCs) have been suggested to have an important prognostic role in gastrointestinal tumors. We developed a preoperative CTC-based nomogram to predict the prognosis of patients with resectable gastric cancer after surgery and established a risk stratification system based on the nomogram. METHODS From January 2012 to June 2017, we screened 258 patients with gastric cancer treated with surgery from one center as the training cohort and 133 patients with gastric cancer treated with surgery from another as the validation cohort, screened prognostic factors for the training cohort using univariate and multivariate Cox risk proportional models, created predictive overall survival (OS) and a recurrence-free survival (RFS) nomogram, and plotted the receiver operating characteristic curve and calibration curve for this nomogram in the training and validation cohorts. Risk score stratification was performed according to the nomogram, and OS curves were plotted for the low, medium, and high-risk groups using the Kaplan-Meier method. RESULTS The CTC positivity rate was 78.5% in all patients. CTC, TNM stage, and Ki-67 were the prognostic factors affecting OS and RFS after gastric cancer surgery. The nomogram consisted of these 3 variables. In the training group, the area under the curve of the nomogram for OS at 1, 3, and 5 years was 0.918, 0.829, and 0.813, respectively, and the area under the curve for RFS was 0.900, 0884, and 0.839, respectively. There was a statistically significant difference in OS among the low, medium, and high-risk groups according to the risk stratification system constructed from nomogram scores ( P < 0.001). DISCUSSION Two nomograms based on preoperative CTC were established to predict OS and RFS after resectable gastric cancer. The 2 nomograms had good discrimination and calibration and significant stratification ability of the risk stratification system established according to them.
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Affiliation(s)
- Feng Xia
- Department of Hepatic Surgery, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qiao Zhang
- Zhongshan People's Hospital Affiliated to Guangdong Medical University, Guangdong, China
| | - Elijah Ndhlovu
- Department of Hepatic Surgery, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Mingyu Zhang
- Department of Digestive Medicine, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - You Zou
- Gastrointestinal Surgery Center, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, China
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Han HS, Lee KW. Liquid Biopsy: An Emerging Diagnostic, Prognostic, and Predictive Tool in Gastric Cancer. J Gastric Cancer 2024; 24:4-28. [PMID: 38225764 PMCID: PMC10774753 DOI: 10.5230/jgc.2024.24.e5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/17/2024] Open
Abstract
Liquid biopsy, a minimally invasive procedure that causes minimal pain and complication risks to patients, has been extensively studied for cancer diagnosis and treatment. Moreover, it facilitates comprehensive quantification and serial assessment of the whole-body tumor burden. Several biosources obtained through liquid biopsy have been studied as important biomarkers for establishing early diagnosis, monitoring minimal residual disease, and predicting the prognosis and response to treatment in patients with cancer. Although the clinical application of liquid biopsy in gastric cancer is not as robust as that in other cancers, biomarker studies using liquid biopsy are being actively conducted in patients with gastric cancer. Herein, we aimed to review the role of various biosources that can be obtained from patients with gastric cancer through liquid biopsies, such as blood, saliva, gastric juice, urine, stool, peritoneal lavage fluid, and ascites, by dividing them into cellular and acellular components. In addition, we reviewed previous studies on the diagnostic, prognostic, and predictive biomarkers for gastric cancer using liquid biopsy and discussed the limitations of liquid biopsy and the challenges to overcome these limitations in patients with gastric cancer.
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Affiliation(s)
- Hye Sook Han
- Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Keun-Wook Lee
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea.
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Jin T, Liang PP, Chen ZH, He FJ, Li ZD, Chen ZW, Hu JK, Yang K. Association between circulating tumor cells in the peripheral blood and the prognosis of gastric cancer patients: a meta-analysis. Ther Adv Med Oncol 2023; 15:17588359231183678. [PMID: 37435560 PMCID: PMC10331349 DOI: 10.1177/17588359231183678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 05/31/2023] [Indexed: 07/13/2023] Open
Abstract
Background Research on the correlation between circulating tumor cells (CTCs) and gastric cancer (GC) has increased rapidly in recent years. However, whether CTCs are associated with GC patient prognosis is highly controversial. Objective This study aims to evaluate the value of CTCs to predict the prognosis of GC patients. Design A meta-analysis. Data Sources and Methods We searched the PubMed, Embase, and Cochrane Library databases for studies that reported the prognostic value of CTCs in GC patients before October 2022. The association between CTCs and overall survival (OS) and disease-free survival (DFS)/recurrence-free survival (RFS) and progression-free survival (PFS) of GC patients was assessed. Subgroup analyses were stratified by sampling times (pre-treatment and post-treatment), detection targets, detection method, treatment method, tumor stage, region, and HR (Hazard Ratio) extraction methods. Sensitivity analysis was performed by removing individual studies to assess the stability of the results. Publication bias was evaluated using funnel plots, Egger's test, and Begg's test. Results We initially screened 2000 studies, of which 28 were available for further analysis, involving 2383 GC patients. The pooled analysis concluded that the detection of CTCs was associated with poor OS (HR = 1.933, 95% CI 1.657-2.256, p < 0.001), DFS/RFS (HR = 3.228, 95% CI 2.475-4.211, p < 0.001), and PFS (HR = 3.272, 95% CI 1.970-5.435, p < 0.001). Furthermore, the subgroup analysis stratified by tumor stage (p < 0.01), HR extraction methods (p < 0.001), detection targets (p < 0.001), detection method (p < 0.001), sampling times (p < 0.001), and treatment method (p < 0.001) all showed that CTC detection was associated with poor OS and DFS/RFS for GC patients. Furthermore, the study showed that CTCs were associated with the poor DFS/RFS of GC when CTCs were detected for patients from Asian or No-Asian regions (p < 0.05). In addition, higher CTCs predicted poorer OS for GC patients who are from Asian regions (p < 0.001), but without statistical difference for GC patients from No-Asian regions (p = 0.490). Conclusion CTC detection in peripheral blood was associated with poor OS, DFS/RFS, and PFS in patients with GC.
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Affiliation(s)
- Tao Jin
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Pan-Ping Liang
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ze-Hua Chen
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Feng-Jun He
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Ze-Dong Li
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Zheng-Wen Chen
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jian-Kun Hu
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kun Yang
- Department of General Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
- Gastric Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
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Ma S, Zhou M, Xu Y, Gu X, Zou M, Abudushalamu G, Yao Y, Fan X, Wu G. Clinical application and detection techniques of liquid biopsy in gastric cancer. Mol Cancer 2023; 22:7. [PMID: 36627698 PMCID: PMC9832643 DOI: 10.1186/s12943-023-01715-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/02/2023] [Indexed: 01/12/2023] Open
Abstract
Gastric cancer (GC) is one of the most common tumors worldwide and the leading cause of tumor-related mortality. Endoscopy and serological tumor marker testing are currently the main methods of GC screening, and treatment relies on surgical resection or chemotherapy. However, traditional examination and treatment methods are more harmful to patients and less sensitive and accurate. A minimally invasive method to respond to GC early screening, prognosis monitoring, treatment efficacy, and drug resistance situations is urgently needed. As a result, liquid biopsy techniques have received much attention in the clinical application of GC. The non-invasive liquid biopsy technique requires fewer samples, is reproducible, and can guide individualized patient treatment by monitoring patients' molecular-level changes in real-time. In this review, we introduced the clinical applications of circulating tumor cells, circulating free DNA, circulating tumor DNA, non-coding RNAs, exosomes, and proteins, which are the primary markers in liquid biopsy technology in GC. We also discuss the current limitations and future trends of liquid biopsy technology as applied to early clinical biopsy technology.
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Affiliation(s)
- Shuo Ma
- grid.452290.80000 0004 1760 6316Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009 Jiangsu China ,grid.263826.b0000 0004 1761 0489Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, 210009 Jiangsu China
| | - Meiling Zhou
- grid.452290.80000 0004 1760 6316Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009 Jiangsu China ,grid.263826.b0000 0004 1761 0489Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, 210009 Jiangsu China
| | - Yanhua Xu
- grid.452743.30000 0004 1788 4869Department of Laboratory Medicine, Northern Jiangsu People’s Hospital Affiliated to Yangzhou University, Yangzhou, 225000 Jiangsu China
| | - Xinliang Gu
- grid.440642.00000 0004 0644 5481Department of Laboratory Medicine, Medical School, Affiliated Hospital of Nantong University, Nantong University, Nantong, 226001 Jiangsu China
| | - Mingyuan Zou
- grid.452290.80000 0004 1760 6316Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009 Jiangsu China ,grid.263826.b0000 0004 1761 0489Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, 210009 Jiangsu China
| | - Gulinaizhaer Abudushalamu
- grid.452290.80000 0004 1760 6316Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009 Jiangsu China ,grid.263826.b0000 0004 1761 0489Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, 210009 Jiangsu China
| | - Yuming Yao
- grid.452290.80000 0004 1760 6316Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009 Jiangsu China ,grid.263826.b0000 0004 1761 0489Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, 210009 Jiangsu China
| | - Xiaobo Fan
- grid.452290.80000 0004 1760 6316Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009 Jiangsu China ,grid.263826.b0000 0004 1761 0489Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, 210009 Jiangsu China
| | - Guoqiu Wu
- grid.452290.80000 0004 1760 6316Center of Clinical Laboratory Medicine, Zhongda Hospital, Southeast University, Nanjing, 210009 Jiangsu China ,grid.263826.b0000 0004 1761 0489Department of Laboratory Medicine, Medical School of Southeast University, Nanjing, 210009 Jiangsu China ,grid.263826.b0000 0004 1761 0489Jiangsu Provincial Key Laboratory of Critical Care Medicine, Southeast University, Nanjing, 210009 Jiangsu China
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Zhang Z, Wu H, Chong W, Shang L, Jing C, Li L. Liquid biopsy in gastric cancer: predictive and prognostic biomarkers. Cell Death Dis 2022; 13:903. [PMID: 36302755 PMCID: PMC9613678 DOI: 10.1038/s41419-022-05350-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 11/11/2022]
Abstract
Gastric cancer (GC) is a high-incidence cancer worldwide. Most patients are diagnosed at an advanced stage, by which time they have limited treatment options and poor prognosis. Early diagnosis and precise treatment are important. In the past few years, emerging research has been conducted on the use of non-invasive liquid biopsy, with its advantages of minimal invasiveness and repeated sampling, to monitor tumor occurrence and recurrence in real time and to evaluate prognosis and treatment response. Many studies have demonstrated the potential of liquid biopsy in GC, and the detection of circulating tumor cells (CTCs), circulating tumor DNA (ctDNA), circulating free DNA (cfDNA), and exosomes has achieved gratifying results. In this review, we summarize evolving technologies for and information regarding liquid biopsy, the most recently discovered GC liquid biopsy biomarkers, and ongoing clinical trials and discuss the challenges and application prospects of liquid biopsy in GC.
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Affiliation(s)
- Zihao Zhang
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
| | - Hao Wu
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
- Key Laboratory of Engineering of Shandong Province, Shandong Provincial Hospital, Jinan, Shandong, 250021, China
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, 250021, China
- Department of General Surgery, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Wei Chong
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
- Key Laboratory of Engineering of Shandong Province, Shandong Provincial Hospital, Jinan, Shandong, 250021, China
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, 250021, China
| | - Liang Shang
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China.
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
- Key Laboratory of Engineering of Shandong Province, Shandong Provincial Hospital, Jinan, Shandong, 250021, China.
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, 250021, China.
| | - Changqing Jing
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China.
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
- Key Laboratory of Engineering of Shandong Province, Shandong Provincial Hospital, Jinan, Shandong, 250021, China.
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, 250021, China.
| | - Leping Li
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital, Shandong University, Jinan, Shandong, 250021, China.
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China.
- Key Laboratory of Engineering of Shandong Province, Shandong Provincial Hospital, Jinan, Shandong, 250021, China.
- Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, 250021, China.
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Li Z, Song M, Han S, Jin C, Yang J. The prognostic role of circulating tumor cells in gastric cancer: A meta-analysis. Front Oncol 2022; 12:963091. [PMID: 36313657 PMCID: PMC9610107 DOI: 10.3389/fonc.2022.963091] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveWe conducted a meta-analysis to evaluate the relationship between circulating tumor cells (CTC) and the prognosis of patients with gastric cancer.Materials and methodsThe cohort studies reporting on the relationship between CTC and prognosis of gastric cancer were collected from Pubmed, Cochrane, Embase, CNKI, WanFang Data, and VIP databases. The two researchers independently screened the literature, extracted the data, and evaluated the bias risk of the included literature. The data were analyzed by Revman software (Review Manager version 5.4).ResultA total of 14 retrospective cohort studies with 1053 patients were included. The results showed that the overall survival time (OS) and progression-free survival time (PFS) of CTC-positive patients were shorter compared to CTC-negative patients. Taking into consideration the critical value of CTC positive patients, country of origin, sample size, treatment mode, and study time, the subgroup analysis showed that CTC-positive was related to the shortening of OS in patients with gastric cancer. Based on the subgroup analysis of the factors such as CTC positive critical value < 2.8, sample size ≥ 75, mixed therapy, longer study duration, country, and immunofluorescence detection of CTC, it was found that OS in CTC positive group was shorter than that in CTC-negative group (all P<0.05), while the critical value of positive CTC ≥ 2.8, sample size ≥ 75, choice of treatment only for operation or non-operation, short study time and molecular detection of CTC were not associated with OS (all P>0.05). In addition, CTC-positive patients had a more advanced TNM staging, poorer tumor differentiation, and earlier distant metastasis.ConclusionCTC can be used as a prognostic indicator of gastric cancer. Gastric cancer patients with positive CTC may have a poorer prognosis compared to those with CTC-negative tumors.Systematic Review Registrationhttps://www.crd.york.ac.uk/PROSPERO/, identifier CRD42022323155.
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Affiliation(s)
- Zuxi Li
- The First Clinical School of Gansu University of Chinese Medicine, Lanzhou, China
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, China
- Gansu Provincial Key Laboratory of Molecular Diagnosis and Precision Therapy of Surgical Tumors, Gansu Provincial Hospital, Lanzhou, China
| | - Meijuan Song
- The First Clinical School of Gansu University of Chinese Medicine, Lanzhou, China
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, China
- Gansu Provincial Key Laboratory of Molecular Diagnosis and Precision Therapy of Surgical Tumors, Gansu Provincial Hospital, Lanzhou, China
| | - Shangjun Han
- The First Clinical School of Gansu University of Chinese Medicine, Lanzhou, China
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, China
- Gansu Provincial Key Laboratory of Molecular Diagnosis and Precision Therapy of Surgical Tumors, Gansu Provincial Hospital, Lanzhou, China
| | - Chuanwei Jin
- The First Clinical School of Gansu University of Chinese Medicine, Lanzhou, China
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, China
- Gansu Provincial Key Laboratory of Molecular Diagnosis and Precision Therapy of Surgical Tumors, Gansu Provincial Hospital, Lanzhou, China
| | - Jing Yang
- The First Clinical School of Gansu University of Chinese Medicine, Lanzhou, China
- General Surgery Clinical Medical Center, Gansu Provincial Hospital, Lanzhou, China
- Gansu Provincial Key Laboratory of Molecular Diagnosis and Precision Therapy of Surgical Tumors, Gansu Provincial Hospital, Lanzhou, China
- *Correspondence: Jing Yang,
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Circulating Tumor Cells and TWIST Expression in Patients with Metastatic Gastric Cancer: A Preliminary Study. J Clin Med 2021; 10:jcm10194481. [PMID: 34640500 PMCID: PMC8509658 DOI: 10.3390/jcm10194481] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 09/25/2021] [Accepted: 09/25/2021] [Indexed: 12/18/2022] Open
Abstract
Background and Aims: The clinical significance of circulating tumor cells (CTCs) and TWIST expression in CTCs remains unelucidated in patients with gastric cancer (GC). Here, we evaluated CTCs and TWIST expression in CTCs and explored their correlation with prognosis in patients with metastatic GC. Methods: Peripheral blood samples were prospectively obtained from 31 patients with metastatic GC between September 2017 and December 2018, prior to treatment. CTCs were detected using a centrifugal microfluidic system and CTCs positive for TWIST immunostaining were defined as TWIST (+) CTCs. Results: CTCs and TWIST (+) CTCs were detected in 25 (80.6%) and 24 (77.4%) of the 31 patients, respectively. CTC count in patients with first diagnosis of metastatic cancer tended to be higher than that in those with recurrent metastatic cancer, but TWIST (+) CTC count was not different between the two groups. There was no difference in CTC and TWIST (+) CTC counts according to histopathologic type, peritoneal dissemination, hematogenous metastasis, serum tumor makers, or response to first-line chemotherapy. Patients with CTCs > 7.5/7.5 mL of blood showed shorter overall survival (OS) than those with CTCs ≤ 7.5/7.5 mL of blood (p = 0.049). Additionally, patients with TWIST (+) CTCs > 2.5/7.5 mL of blood tended to show shorter OS than those with TWIST (+) CTCs ≤ 2.5/7.5 mL of blood (p = 0.105). Conclusions: Our study demonstrated that high levels of CTCs and TWIST (+) CTCs were associated with worse OS.
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Miki Y, Yashiro M, Kuroda K, Okuno T, Togano S, Masuda G, Kasashima H, Ohira M. Circulating CEA-positive and EpCAM-negative tumor cells might be a predictive biomarker for recurrence in patients with gastric cancer. Cancer Med 2020; 10:521-528. [PMID: 33381922 PMCID: PMC7877362 DOI: 10.1002/cam4.3616] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/16/2020] [Accepted: 10/28/2020] [Indexed: 12/16/2022] Open
Abstract
It has been reported that circulating tumor cells (CTCs) are beneficial for predicting tumor stage or treatment response. Although epithelial cell adhesion molecules (EpCAMs) and cytokeratin (CK) have been often used for the identification of CTCs, other tumor markers have not been fully investigated as detecting tools for CTCs. Thus, this study aims to clarify the significance of carcinoembryonic antigen (CEA, CD66e)-positive CTCs in patients with gastric cancer. A total of 150 patients with gastric cancer were enrolled in this study. The mononuclear fraction of peripheral blood was enriched by Ficoll. The number of cells was enumerated depending on the positivity of EpCAM and CEA or CK by flow cytometry. The association of these cells with clinicopathologic characteristics was investigated. The mean age was 70 (range 28-92). The macroscopic type of gastric cancer was classified as 0/1/2/3/4/5 in 59/11/22/38/16/4 patients, respectively. Seventy-one patients (47.3%) were diagnosed with intestinal-type cancer, while 76 patients (50.7%) were diagnosed with the diffuse type. The mean numbers of cells with EpCAM-CK+, EpCAM+CK-, EpCAM+CK+, EpCAM-CEA+, EpCAM+CEA-, and EpCAM+CEA+ were 618, 237, 19.9, 1147, 291, and 7.41, respectively. The number of EpCAM-CEA+cells was significantly higher in patients with stage II-III and IV than in patients with stage I. The 3-year RFS rate in patients with a high number of EpCAM-CEA+cells (>=622) was 57.5%, while it was 79.3% in patients with a low number of EpCAM-CEA+cells (<622) (log-rank p = 0.0079). Thus, we conclude that CEA-positive CTCs will be a clinically beneficial biomarker in patients with gastric cancer.
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Affiliation(s)
- Yuichiro Miki
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masakazu Yashiro
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kenji Kuroda
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Tomohisa Okuno
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Shingo Togano
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Go Masuda
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Hiroaki Kasashima
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan.,Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masaichi Ohira
- Department of Gastroenterological Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
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Yang C, Chen F, Wang S, Xiong B. Circulating Tumor Cells in Gastrointestinal Cancers: Current Status and Future Perspectives. Front Oncol 2019; 9:1427. [PMID: 31921680 PMCID: PMC6923205 DOI: 10.3389/fonc.2019.01427] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 11/29/2019] [Indexed: 12/24/2022] Open
Abstract
Circulating tumor cells (CTCs), which are now defined as the "break away" cancer cells that derive from primary- or metastatic-tumor sites and present in the bloodstream, are considered to be the precursors of metastases. Considering the key role of CTCs in cancer progression, researchers are committed to analyze them in the past decades and many technologies have been proposed for achieving CTCs isolation and characterization with highly sensitivity and specificity until now. On this basis, clinicians gradually realize the clinical values of CTCs' detection through various clinical studies. As a "liquid biopsy," CTCs' detection and measurement can supply important information for predicting patient's survival, monitoring of response/resistance, assessment of minimal residual disease, evaluating distant metastasis, and sometimes, customizing therapy choices. Nowadays, eliminating CTCs of the blood circulation has been regarded as a promising method to prevent tumor metastasis. However, research on CTCs still faces many challenges. Herein, we present an overview to discuss the current concept of CTCs, summarize the available techniques for CTCs detection, and provide an update on the clinical significance of CTCs in gastrointestinal malignancies, especially focus on gastric and colorectal cancer.
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Affiliation(s)
- Chaogang Yang
- Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, China.,Hubei Cancer Clinical Study Center, Wuhan, China
| | - Fangfang Chen
- Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, China.,Hubei Cancer Clinical Study Center, Wuhan, China.,Department of Breast and Thyroid Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Shuyi Wang
- Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, China.,Hubei Cancer Clinical Study Center, Wuhan, China
| | - Bin Xiong
- Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China.,Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, China.,Hubei Cancer Clinical Study Center, Wuhan, China
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12
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Gao Y, Xi H, Wei B, Cui J, Zhang K, Li H, Cai A, Shen W, Li J, Rosell R, Chao J, Chen T, Klempner S, Qiao Z, Chen L. Association Between Liquid Biopsy and Prognosis of Gastric Cancer Patients: A Systematic Review and Meta-Analysis. Front Oncol 2019; 9:1222. [PMID: 31850190 PMCID: PMC6901923 DOI: 10.3389/fonc.2019.01222] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 10/25/2019] [Indexed: 12/24/2022] Open
Abstract
Background: Reports regarding liquid biopsy and gastric cancer (GC) have emerged rapidly in recent decades, yet their prognostic value still remains controversial. This study was aimed to assess the impact of liquid biopsy, including circulating tumor cells (CTCs) and cell-free nucleic acids, on GC patients' prognosis. Methods: PubMed, Medline, EMBASE, and ClinicalTrial.gov databases were searched for studies that report GC patient survival data stratified by CTC/circulating tumor DNA (ctDNA)/circulating miRNAs' status. The hazard ratios (HRs) and their 95% confidence intervals (CIs) for patients' overall survival (OS) and disease-free survival (DFS)/progression-free survival (PFS) were recorded or calculated depending on circulating target status. Results: We initially identified 4,221 studies, from which 43 were eligible for further analysis, comprising 3,814 GC patients. Pooled analyses showed that detection of certain CTCs, ctDNA, and circulating miRNA was associated with poorer OS (CTCs: HR = 1.84, 95%CI 1.50–2.26, p < 0.001; ctDNA: HR = 1.78, 95%CI 1.36–2.34, p < 0.001; circulating miRNA: HR = 1.74, 95%CI 1.13–2.69, p < 0.001) and DFS/PFS (CTCs: HR = 3.39, 95%CI 2.21–5.20, p < 0.001; ctDNA: HR = 2.38, 95%CI 1.31–4.32, p = 0.004; circulating miRNA: HR = 3.30, 95%CI 2.39–4.55, p < 0.001) of GC patients, regardless of disease stage and time point at which sample is taken (at baseline or post-treatment). Conclusions: The presence of CTCs and/or cellular components identifies a group of GC with poorer prognosis. Among circulating markers, CTCs demonstrated a stronger and more stable predictive value for late-stage disease and among Mongolian populations with GC. Less data are available for ctDNA and miRNA; however, their presence may also reflect aggressive biology and warrants further prospective study.
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Affiliation(s)
- Yunhe Gao
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China.,General Surgery Institute, Chinese PLA General Hospital, Beijing, China
| | - Hongqing Xi
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Bo Wei
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China.,General Surgery Institute, Chinese PLA General Hospital, Beijing, China
| | - Jianxin Cui
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Kecheng Zhang
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Hua Li
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Aizhen Cai
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China.,General Surgery Institute, Chinese PLA General Hospital, Beijing, China
| | - Weishen Shen
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China.,Nanjing General Hospital of Nanjing Military Command, Nanjing, China
| | - Jiyang Li
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China.,General Surgery Institute, Chinese PLA General Hospital, Beijing, China
| | - Rafael Rosell
- Catalan Institute of Oncology, Germans Trias i Pujol Health Science Institute and Hospital, Barcelona, Spain
| | - Joseph Chao
- Department of Medical Oncology and Therapeutics Research, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Tianhui Chen
- Department of Cancer Prevention, Institute of Cancer and Basic Medicine (ICBM), Zhejiang Provincial Office for Cancer Prevention and Control, Cancer Hospital of the University of CAS, Chinese Academy of Sciences (CAS), Hangzhou, China
| | - Samuel Klempner
- The Angeles Clinic and Research Institute, Los Angeles, CA, United States.,Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Zhi Qiao
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China
| | - Lin Chen
- Department of General Surgery, Chinese PLA General Hospital, Beijing, China.,General Surgery Institute, Chinese PLA General Hospital, Beijing, China
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Palmirotta R, Lovero D, Cafforio P, Felici C, Mannavola F, Pellè E, Quaresmini D, Tucci M, Silvestris F. Liquid biopsy of cancer: a multimodal diagnostic tool in clinical oncology. Ther Adv Med Oncol 2018; 10:1758835918794630. [PMID: 30181785 PMCID: PMC6116068 DOI: 10.1177/1758835918794630] [Citation(s) in RCA: 273] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 06/28/2018] [Indexed: 12/17/2022] Open
Abstract
Over the last decades, the concept of precision medicine has dramatically renewed
the field of medical oncology; the introduction of patient-tailored therapies
has significantly improved all measurable outcomes. Liquid biopsy is a
revolutionary technique that is opening previously unexpected perspectives. It
consists of the detection and isolation of circulating tumor cells, circulating
tumor DNA and exosomes, as a source of genomic and proteomic information in
patients with cancer. Many technical hurdles have been resolved thanks to newly
developed techniques and next-generation sequencing analyses, allowing a broad
application of liquid biopsy in a wide range of settings. Initially correlated
to prognosis, liquid biopsy data are now being studied for cancer diagnosis,
hopefully including screenings, and most importantly for the prediction of
response or resistance to given treatments. In particular, the identification of
specific mutations in target genes can aid in therapeutic decisions, both in the
appropriateness of treatment and in the advanced identification of secondary
resistance, aiming to early diagnose disease progression. Still application is
far from reality but ongoing research is leading the way to a new era in
oncology. This review summarizes the main techniques and applications of liquid
biopsy in cancer.
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Affiliation(s)
- Raffaele Palmirotta
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Domenica Lovero
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Paola Cafforio
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Claudia Felici
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Mannavola
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Eleonora Pellè
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Davide Quaresmini
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Marco Tucci
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Franco Silvestris
- Section of Clinical and Molecular Oncology, Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, 70124, Italy
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Li TT, Liu H, Yu J, Shi GY, Zhao LY, Li GX. Prognostic and predictive blood biomarkers in gastric cancer and the potential application of circulating tumor cells. World J Gastroenterol 2018; 24:2236-2246. [PMID: 29881233 PMCID: PMC5989238 DOI: 10.3748/wjg.v24.i21.2236] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 04/27/2018] [Accepted: 05/18/2018] [Indexed: 02/06/2023] Open
Abstract
Gastric cancer (GC), with its high incidence and mortality rates, is a highly fatal cancer that is common in East Asia particularly in China. Its recurrence and metastasis are the main causes of its poor prognosis. Circulating tumor cells (CTCs) or other blood biomarkers that are released into the circulating blood stream by tumors are thought to play a crucial role in the recurrence and metastasis of gastric cancer. Therefore, the detection of CTCs and other blood biomarkers has an important clinical significance; in fact, they can help predict the prognosis, assess the staging, monitor the therapeutic effects and determine the drug susceptibility. Recent research has identified many blood biomarkers in GC, such as various serum proteins, autoantibodies against tumor associated antigens, and cell-free DNAs. The analysis of CTCs and circulating cell-free tumor DNA (ctDNA) in the peripheral blood of patients with gastric cancer is called as liquid biopsy. These blood biomarkers provide the disease status for individuals and have clinical meaning. In this review, we focus on the recent scientific advances regarding CTCs and other blood biomarkers, and discuss their origins and clinical meaning.
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Affiliation(s)
- Ting-Ting Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Hao Liu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Jiang Yu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Guang-Yao Shi
- Division of Cardiology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, Guangdong Province, China
| | - Li-Ying Zhao
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Guo-Xin Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, Guangdong Province, China
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