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Open AccessArticle

Development of a Highly Sensitive Technique for Capturing Renal Cell Cancer Circulating Tumor Cells

Department of Urology, Showa University, Tokyo 142-8666, Japan
Department of Physiology, School of Medicine, Showa University, Tokyo 142-8666, Japan
Ishii-clinic Kyobashi Edogrand, Tokyo 104-0031, Japan
Author to whom correspondence should be addressed.
Diagnostics 2019, 9(3), 96;
Received: 29 July 2019 / Revised: 13 August 2019 / Accepted: 13 August 2019 / Published: 14 August 2019
(This article belongs to the Special Issue Liquid Biopsy in Solid Tumor Oncology)
purpose: Liquid biopsy is becoming increasingly important as a guide for selecting new drugs and determining their efficacy. In urological cancer, serum markers for renal cell and urothelial cancers has made the development of liquid biopsy for these cancers strongly desirable. Liquid biopsy is less invasive than conventional tissue biopsy is, enabling frequent biopsies and, therefore, is considered effective for monitoring the treatment course. Circulating tumor cells (CTCs) are a representative liquid biopsy specimen. In the present study, we focused on developing our novel technology for capturing renal cell cancer (RCC)-CTCs using an anti-G250 antibody combined with new devices. Basic experiments of our technology showed that it was possible to detect RCC-CTC with a fairly high accuracy of about 95%. Also, RCC-CTC was identified in the peripheral blood of actual RCC patients. Additionally, during the treatment course of the RCC patient, change in the number of RCC-CTC was confirmed in one case. We believe that the technology we developed will be useful for determining the treatment efficacy and drug selection for the treatment of renal cell cancer (RCC). In order to solve issues such as thresholds setting of this technology, large-scale clinical trials are expected. View Full-Text
Keywords: circulating tumor cells; renal cell carcinoma; G250 antigen circulating tumor cells; renal cell carcinoma; G250 antigen
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Naoe, M.; Kusaka, C.; Ohta, M.; Hasebe, Y.; Unoki, T.; Shimoyama, H.; Nakasato, T.; Oshinomi, K.; Morita, J.; Fuji, K.; Ogawa, Y.; Tsukada, M.; Sunagawa, M.; Ishii, H. Development of a Highly Sensitive Technique for Capturing Renal Cell Cancer Circulating Tumor Cells. Diagnostics 2019, 9, 96.

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