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Rahmanian M, Sartipzadeh Hematabad O, Askari E, Shokati F, Bakhshi A, Moghadam S, Olfatbakhsh A, Al Sadat Hashemi E, Khorsand Ahmadi M, Morteza Naghib S, Sinha N, Tel J, Eslami Amirabadi H, den Toonder JMJ, Majidzadeh-A K. A micropillar array-based microfluidic chip for label-free separation of circulating tumor cells: The best micropillar geometry? J Adv Res 2022; 47:105-121. [PMID: 35964874 PMCID: PMC10173300 DOI: 10.1016/j.jare.2022.08.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 07/22/2022] [Accepted: 08/07/2022] [Indexed: 10/15/2022] Open
Abstract
INTRODUCTION The information derived from the number and characteristics of circulating tumor cells (CTCs), is crucial to ensure appropriate cancer treatment monitoring. Currently, diverse microfluidic platforms have been developed for isolating CTCs from blood, but it remains a challenge to develop a low-cost, practical, and efficient strategy. OBJECTIVES This study aimed to isolate CTCs from the blood of cancer patients via introducing a new and efficient micropillar array-based microfluidic chip (MPA-Chip), as well as providing prognostic information and monitoring the treatment efficacy in cancer patients. METHODS We fabricated a microfluidic chip (MPA-Chip) containing arrays of micropillars with different geometries (lozenge, rectangle, circle, and triangle). We conducted numerical simulations to compare velocity and pressure profiles inside the micropillar arrays. Also, we experimentally evaluated the capture efficiency and purity of the geometries using breast and prostate cancer cell lines as well as a blood sample. Moreover, the device's performance was validated on 12 patients with breast cancer (BC) in different states. RESULTS The lozenge geometry was selected as the most effective and optimized micropillar design for CTCs isolation, providing high capture efficiency (>85 %), purity (>90 %), and viability (97 %). Furthermore, the lozenge MPA-chip was successfully validated by the detection of CTCs from 12 breast cancer (BC) patients, with non-metastatic (median number of 6 CTCs) and metastatic (median number of 25 CTCs) diseases, showing different prognoses. Also, increasing the chemotherapy period resulted in a decrease in the number of captured CTCs from 23 to 7 for the metastatic patient. The MPA-Chip size was only 0.25 cm2 and the throughput of a single chip was 0.5 ml/h, which can be increased by multiple MPA-Chips in parallel. CONCLUSION The lozenge MPA-Chip presented a novel micropillar geometry for on-chip CTC isolation, detection, and staining, and in the future, the possibilities can be extended to the culture of the CTCs.
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Affiliation(s)
- Mehdi Rahmanian
- Biomaterials and Tissue Engineering Research Group, Interdisciplinary Technologies Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran; Microsystems Research Section, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Omid Sartipzadeh Hematabad
- Biomaterials and Tissue Engineering Research Group, Interdisciplinary Technologies Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Esfandyar Askari
- Biomaterials and Tissue Engineering Research Group, Interdisciplinary Technologies Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Farhad Shokati
- Biomaterials and Tissue Engineering Research Group, Interdisciplinary Technologies Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Atin Bakhshi
- Biomaterials and Tissue Engineering Research Group, Interdisciplinary Technologies Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Shiva Moghadam
- Breast Diseases Group, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Asiie Olfatbakhsh
- Breast Diseases Group, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Esmat Al Sadat Hashemi
- Breast Diseases Group, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Mohammad Khorsand Ahmadi
- Microsystems Research Section, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Seyed Morteza Naghib
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology, Tehran, Iran
| | - Nidhi Sinha
- Laboratory of Immunoengineering, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands; Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Jurjen Tel
- Laboratory of Immunoengineering, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands; Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Hossein Eslami Amirabadi
- Microsystems Research Section, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands; Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands; AZAR Innovations, Utrecht, the Netherlands
| | - Jaap M J den Toonder
- Microsystems Research Section, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands; Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, the Netherlands.
| | - Keivan Majidzadeh-A
- Genetics Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran.
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Steinbach C, Steinbrücker C, Pollok S, Walther K, Clement JH, Chen Y, Petersen I, Cialla-May D, Weber K, Popp J. KRAS mutation screening by chip-based DNA hybridization--a further step towards personalized oncology. Analyst 2015; 140:2747-54. [PMID: 25706807 DOI: 10.1039/c4an02086c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of predictive biomarkers can help to improve therapeutic options for the individual cancer patient. For the treatment of colon cancer patients with anti-EGFR-based drugs, the KRAS mutation status has to be determined to pre-select responders that will benefit from this medication. Amongst others, array-based tests have been established for profiling of the KRAS mutation status. Within this article we describe an on-chip hybridization technique to screen therapeutic relevant KRAS codon 12 mutations. The DNA chip-based platform enables the reliable discrimination of selected mutations by allele-specific hybridization. Here, silver deposits represent robust endpoint signals that allow for a simple naked eye rating. With the here presented assay concept a precise identification of heterozygous and homozygous KRAS mutations, even against a background of up to 95% wild-type DNA, was realizable. The applicability of the test was successfully proven for various cancer cell lines as well as clinical tumour samples. Thus, the chip-based DNA hybridization technique seems to be a promising tool for KRAS mutation analysis to further improve personalized cancer treatment.
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Affiliation(s)
- Christine Steinbach
- Leibniz Institute of Photonic Technology Jena, Albert-Einstein-Str. 9, 07745 Jena, Germany
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Kalikaki A, Politaki H, Souglakos J, Apostolaki S, Papadimitraki E, Georgoulia N, Tzardi M, Mavroudis D, Georgoulias V, Voutsina A. KRAS genotypic changes of circulating tumor cells during treatment of patients with metastatic colorectal cancer. PLoS One 2014; 9:e104902. [PMID: 25137394 PMCID: PMC4138105 DOI: 10.1371/journal.pone.0104902] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 07/16/2014] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION Circulating tumor cells (CTCs) could represent a non-invasive source of cancer cells used for longitudinal monitoring of the tumoral mutation status throughout the course of the disease. The aims of the present study were to investigate the detection of KRAS mutations in CTCs from patients with metastatic colorectal cancer (mCRC) and to compare their mutation status during treatment or disease progression with that of the corresponding primary tumors. MATERIALS AND METHODS Identification of the seven most common KRAS mutations on codons 12 and 13 was performed by Peptide Nucleic Acid (PNA)-based qPCR method. The sensitivity of the assay was determined after isolation of KRAS mutant cancer cells spiked into healthy donors' blood, using the CellSearch Epithelial Cell kit. Consistent detection of KRAS mutations was achieved in samples containing at least 10 tumor cells/7.5 ml of blood. RESULTS The clinical utility of the assay was assessed in 48 blood samples drawn from 31 patients with mCRC. All patients had PIK3CA and BRAF wild type primary tumors and 14 KRAS mutant tumors. CTCs were detected in 65% of specimens obtained from 74% of patients. KRAS mutation analysis in CTC-enriched specimens showed that 45% and 16.7% of patients with mutant and wild type primary tumors, respectively, had detectable mutations in their CTCs. Assessing KRAS mutations in serial blood samples revealed that individual patient's CTCs exhibited different mutational status of KRAS during treatment. CONCLUSIONS The current findings support the rationale for using the CTCs as a dynamic source of tumor cells which, by re-evaluating their KRAS mutation status, could predict, perhaps more accurately, the response of mCRC patients to targeted therapy.
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Affiliation(s)
- Aristea Kalikaki
- Laboratory of Tumor Cell Biology, University of Crete, School of Medicine, Heraklion, Crete, Greece
| | - Helen Politaki
- Laboratory of Tumor Cell Biology, University of Crete, School of Medicine, Heraklion, Crete, Greece
| | - John Souglakos
- Laboratory of Tumor Cell Biology, University of Crete, School of Medicine, Heraklion, Crete, Greece
- Department of Medical Oncology, University General Hospital of Heraklion, Heraklion, Crete, Greece
| | - Stella Apostolaki
- Laboratory of Tumor Cell Biology, University of Crete, School of Medicine, Heraklion, Crete, Greece
| | - Elisavet Papadimitraki
- Department of Medical Oncology, University General Hospital of Heraklion, Heraklion, Crete, Greece
| | - Nefeli Georgoulia
- Laboratory of Tumor Cell Biology, University of Crete, School of Medicine, Heraklion, Crete, Greece
| | - Maria Tzardi
- Department of Pathology, University General Hospital of Heraklion, Heraklion, Crete, Greece
| | - Dimitris Mavroudis
- Laboratory of Tumor Cell Biology, University of Crete, School of Medicine, Heraklion, Crete, Greece
- Department of Medical Oncology, University General Hospital of Heraklion, Heraklion, Crete, Greece
| | - Vassilis Georgoulias
- Laboratory of Tumor Cell Biology, University of Crete, School of Medicine, Heraklion, Crete, Greece
- Department of Medical Oncology, University General Hospital of Heraklion, Heraklion, Crete, Greece
| | - Alexandra Voutsina
- Laboratory of Tumor Cell Biology, University of Crete, School of Medicine, Heraklion, Crete, Greece
- * E-mail:
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Parkinson DR, Dracopoli N, Petty BG, Compton C, Cristofanilli M, Deisseroth A, Hayes DF, Kapke G, Kumar P, Lee JS, Liu MC, McCormack R, Mikulski S, Nagahara L, Pantel K, Pearson-White S, Punnoose EA, Roadcap LT, Schade AE, Scher HI, Sigman CC, Kelloff GJ. Considerations in the development of circulating tumor cell technology for clinical use. J Transl Med 2012; 10:138. [PMID: 22747748 PMCID: PMC3478228 DOI: 10.1186/1479-5876-10-138] [Citation(s) in RCA: 252] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Accepted: 06/14/2012] [Indexed: 02/07/2023] Open
Abstract
This manuscript summarizes current thinking on the value and promise of evolving circulating tumor cell (CTC) technologies for cancer patient diagnosis, prognosis, and response to therapy, as well as accelerating oncologic drug development. Moving forward requires the application of the classic steps in biomarker development–analytical and clinical validation and clinical qualification for specific contexts of use. To that end, this review describes methods for interactive comparisons of proprietary new technologies, clinical trial designs, a clinical validation qualification strategy, and an approach for effectively carrying out this work through a public-private partnership that includes test developers, drug developers, clinical trialists, the US Food & Drug Administration (FDA) and the US National Cancer Institute (NCI).
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Takao M, Takeda K. Enumeration, characterization, and collection of intact circulating tumor cells by cross contamination-free flow cytometry. Cytometry A 2011; 79:107-17. [PMID: 21246706 DOI: 10.1002/cyto.a.21014] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Revised: 11/30/2010] [Accepted: 12/01/2010] [Indexed: 02/06/2023]
Abstract
Circulating tumor cells (CTC) are an important biomarker for several solid cancers. Most of the commercially available systems for enumeration of CTC are based on immunomagnetic enrichment of epithelial cell adhesion molecule (EpCAM/CD326)-expressing CTC before microscopic cell imaging or reverse-transcription PCR (RT-PCR). The aim of this study was to establish a practical method for enumeration of CTC using a novel flow cytometer that has a disposable microfluidic chip, which is designed to realize absolute cross contamination-free measurements and to collect the analyzed cell sample. Although the process of enumeration and labeling of CTC was optimized for this device, the simplified protocol described here could be applied to other flow cytometers. Cultured cancer cells spiked into normal blood were enriched using MACS® EpCAM-MicroBeads following cell labeling with an allophycocyanin (APC)-conjugated EpCAM mAb, instead of by intracellular staining of cytokeratins (CK). The EpCAM double-positive selection/labeling method allows enumeration of intact CTC, maintenance of cellular integrity, and the concomitant performance of a CTC viability test. The combination of the fine-tuned CTC enrichment process and the cytometric multicolor analysis resulted in a linear relationship between the output cell count and the input cell number from zero to hundreds of cells. In particular, a satisfactory signal/noise ratio was obtained by gate-exclusion of leukocyte signals using an anti-CD45 mAb. The entire process had little influence on the viability of the spiked lung cancer cell PC-9. Measured PC-9 and breast cancer MCF-7 cells bearing EpCAM-MicroBeads, APC-conjugated EpCAM mAb, and the DNA staining dye SYTO9 grew normally, demonstrating the potential usefulness of the collected samples for further studies. This intact CTC enumeration and analysis procedure (iCeap) would be of great benefit to clinicians by providing them with rapid stratification of antitumor therapy, and to basic researchers by permitting further molecular and cellular characterization of CTC.
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Affiliation(s)
- Masashi Takao
- Department of Molecular Genetics, Tohoku University, Sendai, Japan.
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