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Huang MY, Tsai HL, Huang JJ, Wang JY. Clinical Implications and Future Perspectives of Circulating Tumor Cells and Biomarkers in Clinical Outcomes of Colorectal Cancer. Transl Oncol 2016; 9:340-7. [PMID: 27567958 PMCID: PMC5006809 DOI: 10.1016/j.tranon.2016.06.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 06/30/2016] [Accepted: 06/30/2016] [Indexed: 02/06/2023] Open
Abstract
Colorectal cancer (CRC) is a major public health problem. Early CRC detection, pretherapeutic responsiveness prediction, and postoperative micrometastasis monitoring are the hallmarks for successful CRC treatment. Here, the methodologies used for detecting circulating tumor cells (CTCs) from CRC are reviewed. In addition to the traditional CRC biomarkers, the persistent presence of posttherapeutic CTCs indicates resistance to adjuvant chemotherapy and/or radiotherapy; hence, CTCs also play a decisive role in the subsequent relapse of CRC. Moreover, the genetic and phenotypic profiling of CTCs often differs from that of the primary tumor; this difference can be used to select the most effective targeted therapy. Consequently, studying CTCs can potentially individualize treatment strategies for patients with CRC. Therefore, CTC detection and characterization may be valuable tools for refining prognosis, and CTCs can be used in a real-time tumor biopsy for designing individually tailored therapy against CRC.
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Affiliation(s)
- Ming-Yii Huang
- Department of Radiation Oncology, Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; Department of Radiation Oncology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Center for Biomarkers and Biotech Drugs, Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hsiang-Lin Tsai
- Division of General Surgery Medicine, Department of Surgery, Kaohsiung Medical University, Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Division of Gastroenterology and General Surgery, Department of Surgery, Kaohsiung Medical University, Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Joh-Jong Huang
- Department of Family Medicine and Department of Community Medicine, Kaohsiung Medical University, Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Jaw-Yuan Wang
- Center for Biomarkers and Biotech Drugs, Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Division of Gastroenterology and General Surgery, Department of Surgery, Kaohsiung Medical University, Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Graduate Institute of Clinical Medicine, Department of Surgery, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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Tao L, Zhang K, Sun Y, Jin B, Zhang Z, Yang K. Anti-epithelial cell adhesion molecule monoclonal antibody conjugated fluorescent nanoparticle biosensor for sensitive detection of colon cancer cells. Biosens Bioelectron 2012; 35:186-192. [PMID: 22464249 DOI: 10.1016/j.bios.2012.02.044] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 02/09/2012] [Accepted: 02/20/2012] [Indexed: 11/28/2022]
Abstract
In this paper, a sensitive and selective sensor for detecting colon cancer cells based on nanoparticle covalent modified anti-human epithelial cell adhesion molecule (EpCAM) antibody is developed. The transmission electron microscope (TEM) images showed that the nanoparticle and functionalized nanoparticle had good decentrality for application. The NaIO(4) oxidation method, which was used as oxidizing antibody for immobilization of conjugating antibody on the silica-coated fluorescent nanoparticles, maintained the activities of antibodies very well. The fluorescence microscopy imaging and flow cytometer (FCM) experiments demonstrated that the nanosensor could increase the signal intensity obviously and distinguish three kinds of target cells (colo205, sw480 and NCM460) well. The membrane and nuclear staining showed the distribution and abundance of EpCAM in cells' membrane. It also provides a possibility to quantify special membrane proteins on different regions of cells' surface. At the end, the result of detecting a simple sample proved that colo205 cells were selected by anti-EpCAM antibody nanosensors in this environment, and made a good foundation for subsequent research.
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Affiliation(s)
- Liang Tao
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, China
| | - Kui Zhang
- Department of Immunology, The Fourth Military Medical University, China
| | - Yuanjie Sun
- Department of Immunology, The Fourth Military Medical University, China
| | - Boquan Jin
- Department of Immunology, The Fourth Military Medical University, China
| | - Zhujun Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, China.
| | - Kun Yang
- Department of Immunology, The Fourth Military Medical University, China.
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