{"id":2293,"date":"2018-02-28T10:43:24","date_gmt":"2018-02-28T18:43:24","guid":{"rendered":"https:\/\/keck.usc.edu\/news\/metal-detection-technique-inspires-usc-cancer-researchers\/"},"modified":"2023-11-26T08:24:13","modified_gmt":"2023-11-26T16:24:13","slug":"metal-detection-technique-inspires-usc-cancer-researchers","status":"publish","type":"post","link":"https:\/\/keck.usc.edu\/news\/metal-detection-technique-inspires-usc-cancer-researchers\/","title":{"rendered":"Metal-detection technique inspires USC cancer researchers"},"content":{"rendered":"\n \n \n\n\n\n\n\n\n\n
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\n\n \n Press Release<\/span>\n\n\n\n<\/div>\n \n \n
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Metal-detection technique inspires USC cancer researchers<\/h1>\n\n\n<\/div>\n \n \n
\n \n February 28, 2018<\/span>\n <\/div>\n \n \n
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A USC team is working on sophisticated cancer detection methods. (Illustration\/iStock)<\/figcaption>\n <\/figure>\n \n \n \n\n<\/div>\n \n\n <\/div><\/div>\n\r\n\r\n\n\n \n \n\n\n\n\n\n\n\n
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USC Michelson Center scientists use metal-tagged markers and a patient\u2019s blood sample, aiming for precise treatments of cancerous cells that spread to other organs
\nMetal detection has helped mining companies strike gold and airport security identify passengers who are a potential threat. Now USC scientists have pushed its use into another realm: studying cancer.
\nBy imaging metal-tagged antibodies on biopsies from a patient with metastatic prostate cancer, Bridge Institute researchers at the\u00a0USC Michelson Center for Convergent Bioscience<\/a>\u00a0have created highly detailed, digital facsimiles of cancer cells that can travel through the body. The metal tags enable scientists to identify and characterize the cancer cells in a blood sample after it is placed on a slide.
\nThe USC-led study, published in January by Convergent Science Physical Oncology, established the proof of concept for the metal-detection technique, which allows scientists to see circulating and disseminated tumor cells at a molecular level in a way not possible before. Creating such highly detailed copies of tumors may help researchers develop more precise treatment plans for individual patients.
\n\u201cWe are trying to understand how cancer actually moves from the initial location to other places in the body and can settle there,\u201d Kuhn said.
\nThrough his work, Kuhn aims to shed new light on how cancer spreads through the body and evolves over time. Such discoveries have already led to better personalized care for patients, which tailors the treatment to the individuals as much as to their specific form of cancer.
\nBecause Kuhn\u2019s research bridges multiple fields, he holds professorships at the\u00a0USC Dornsife College of Letters, Arts and Sciences<\/a>, the\u00a0USC Viterbi School of Engineering<\/a>\u00a0and the\u00a0Keck School of Medicine at USC<\/a>\u00a0\u2014 all of which are tied to the USC Michelson Center, a hub for convergent bioscience at the university.<\/p>\n

Mapping cancer for precision medicine<\/h2>\n

The study examined whether scientists could achieve a better blueprint for the spread of the tumor, which is the most difficult phase of cancer. Cancer spreads via rare circulating and disseminated tumor cells that break away from their original source, such as tumors in the breast or the prostate, and travel through the body. These rogue tumor cells spread into organs, such as the liver or lungs, or into the bones, where they metastasize undetected, making effective treatment very challenging.
\nUntil now, researchers have relied on fluorescence microscopy, staining cells with a fluorescent labeled antibody and then examining them with microscopes. Fluorescence microscopy is useful, but its routine use is limited in the number of colors available in a single experiment.
\nWith the Fluidigm Hyperion Imaging System to monitor the biology of the cancer cells and understand how the cancer changes, scientists could see protein biomarkers that may determine how a tumor cell would respond to a drug therapy or why it would fail to respond, how it could spread and how it might affect the patient\u2019s immune system response.
\nThe new approach of using metal-tagged antibodies and a laser ablation system, coupled with a mass spectrometer, gives scientists the ability to track 35 different metal labels simultaneously.
\nAs a result, it provides 35 distinct views of the cancer cell\u2019s biology, Kuhn said.
\n\u201cOftentimes, we sequence the cancer\u2019s genetic code, and that\u2019s great because the only way to build something like a building or a machine is with a blueprint. But not every blueprint ends up being built to specification or even perform as expected,\u201d Kuhn said. \u201cFor a closer perspective and for purposes of improving the precision of medical treatment, you have to move in, from genome to proteome to cell.\u201d<\/p>\n

Zooming in on cancer<\/h2>\n

\"\"Looking at cancer is like seeing a painting at different distances. From afar, it is one of Monet\u2019s water lily paintings. But up close, nearly touching the canvas, one can see the individual points of paint in varying colors and shapes that comprise every object within the painting.
\nWhen it comes to studying circulating and disseminated cancer cells, scientists need to see those points and be able to zoom in and out to fully grasp how they behave and spread. They especially want to capture this picture just as they are determining the course of treatment, which the metal-tracing technique enables them to do within a liquid biopsy.<\/p>\n

Metals characterize cancer<\/h2>\n

Researchers at the University of Zurich established the potential for using metals to characterize cancer in 2013.
\n\u201cBernd Bodenmiller did some elegant work on how to use metals attached to an antibody. We expanded on that by using his approach with the liquid biopsy that we had previously developed. We simply add the antibody cocktail, wait a while for binding and then wash off the excess and see what sticks \u2014 like tie dye,\u201d Kuhn explained. \u201cThen, you use a laser to atomize the sample and a mass spectrometer to look for each of the metals.\u201d
\nBecause of proof-of-concept studies like this, the technique is now an official product of Fluidigm and is available for researchers worldwide.
\n\u201cThis is really just the beginning,\u201d Kuhn said. \u201cYou\u2019ll see hundreds of studies now using this technique.\u201d
\nJames Hicks, a research professor of biological sciences at Michelson Center and USC Dornsife, was also a study co-author.<\/p>\n

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USC co-authors for the study included Erik Gerdtsson and Anders Carlsson of the Bridge Institute at the USC Michelson Center, as well as Akil Merchant and Mohan Singh of the USC Norris Comprehensive Cancer Center at the Keck School of Medicine.<\/em>
\nOther USC co-authors were Anna Sandstrom Gerdtsson, Paymaneh Malihi, Rafael Nevarez, Anand Kolatkar, Carmen Ruiz Velasco and Sophie Wix; Jana-Aletta Thiele at Charles University in Prague; and Amado Zurita and Christopher Logothetis at the University of Texas MD Anderson Cancer Center.<\/em>
\nThe work was funded by grants from the Breast Cancer Research Foundation, the National Cancer Institute and Leidos Biomedical Research, Prostate Cancer Foundation, Vassiliadis Research Fellowship, Polak Research Fellowship, the Vicky Joseph Research Fellowship and the Charles University Research Fund.<\/em>
\nUSC is an early access partner of Fluidigm, which provided reagents and expertise to support the study.<\/em><\/p>\n\n\n\n<\/div>\n <\/div>\n\n\n <\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":168,"featured_media":2294,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"advgb_blocks_editor_width":"","advgb_blocks_columns_visual_guide":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[6],"tags":[521],"class_list":["post-2293","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-press-release","tag-mesh-strategic-partnerships"],"acf":[],"yoast_head":"\nMetal-detection technique inspires USC cancer researchers<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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