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      High-throughput drug screening of fine-needle aspiration-derived cancer organoids

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          Summary

          Generation of fine-needle aspiration (FNA)-derived cancer organoids has allowed us to develop a number of downstream applications. In this protocol, we start with organoids cultured in a semi-solid format. We dissociate organoids into single cells and then plate in a 384-well format for high-throughput drug screening. While this method must be fine-tuned for each individual organoid culture, it offers a format well suited for rapidly screening medium-sized drug/compound libraries (500–5,000 molecules) and generating dose-response curves to measure relative efficacy.

          For complete details on the use and execution of this protocol, please refer to Lee et al. (2020) and Vilgelm et al. (2020).

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          Highlights

          • Protocol to dissociate organoids into single cells for high-throughput plating methods

          • Organoids form in a 384-well format when plated in cell-repellent plates

          • Steps for high-throughput drug screening with viability assays

          Abstract

          Generation of fine-needle aspiration (FNA)-derived cancer organoids has allowed us to develop a number of downstream applications. In this protocol, we start with organoids cultured in a semi-solid format. We dissociate organoids into single cells and then plate in a 384-well format for high-throughput drug screening. While this method must be fine-tuned for each individual organoid culture, it offers a format well suited for rapidly screening medium-sized drug/compound libraries (500–5,000 molecules) and generating dose-response curves to measure relative efficacy.

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          Most cited references3

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          Fine-Needle Aspiration-Based Patient-Derived Cancer Organoids

          Summary Patient-derived cancer organoids hold great potential to accurately model and predict therapeutic responses. Efficient organoid isolation methods that minimize post-collection manipulation of tissues would improve adaptability, accuracy, and applicability to both experimental and real-time clinical settings. Here we present a simple and minimally invasive fine-needle aspiration (FNA)-based organoid culture technique using a variety of tumor types including gastrointestinal, thyroid, melanoma, and kidney. This method isolates organoids directly from patients at the bedside or from resected tissues, requiring minimal tissue processing while preserving the histologic growth patterns and infiltrating immune cells. Finally, we illustrate diverse downstream applications of this technique including in vitro high-throughput chemotherapeutic screens, in situ immune cell characterization, and in vivo patient-derived xenografts. Thus, routine clinical FNA-based collection techniques represent an unappreciated substantial source of material that can be exploited to generate tumor organoids from a variety of tumor types for both discovery and clinical applications.
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            Obtaining patient-derived cancer organoid cultures via fine-needle aspiration

            Summary Patient-derived tumor organoid cultures are an essential and innovative methodology for translational research. However, current techniques to establish these cultures are cumbersome, expensive, and often require irreplaceable clinical tissue from surgery or core biopsies. Fine-needle aspiration (FNA) provides a minimally invasive biopsy technique commonly performed in clinical settings. Here, we provide a protocol for FNA. We have found that FNA provides a cost-effective, rapid, and streamlined method for tissue acquisition for cancer organoid culture. For complete details on the use and execution of this protocol, please refer to Lee et al. (2020) and Vilgelm et al. (2020).
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              Novel three-dimensional cultures provide insights into thyroid cancer behavior.

              Thyroid cancer has the fastest growing incidence of any cancer in the United States, as measured by the number of new cases per year. Despite advances in tissue culture techniques, a robust model for thyroid cancer spheroid culture is yet to be developed. Using eight established thyroid cancer cell lines, we created an efficient and cost-effective 3D culture system that can enhance our understanding of in vivo treatment response. We found that all eight cell lines readily form spheroids in culture with unique morphology, size, and cytoskeletal organization. In addition, we developed a high-throughput workflow that allows for drug screening of spheroids. Using this approach, we found that spheroids from K1 and TPC1 cells demonstrate significant differences in their sensitivities to dabrafenib treatment that closely model expected patient drug response. In addition, K1 spheroids have increased sensitivity to dabrafenib when compared to monolayer K1 cultures. Utilizing traditional 2D cultures of these cell lines, we evaluated the mechanisms of this drug response, showing dramatic and acute changes in their actin cytoskeleton as well as inhibition of migratory behavior in response to dabrafenib treatment. Our study is the first to describe the development of a robust spheroid system from established cultured thyroid cancer cell lines and adaptation to a high-throughput format. We show that combining 3D culture with traditional 2D methods provides a complementary and powerful approach to uncover drug sensitivity and mechanisms of inhibition in thyroid cancer.

                Author and article information

                Contributors
                Journal
                STAR Protoc
                STAR Protoc
                STAR Protocols
                Elsevier
                2666-1667
                16 December 2020
                18 December 2020
                16 December 2020
                : 1
                : 3
                : 100212
                Affiliations
                [1 ]Department of Pharmacology, Vanderbilt University, Nashville, TN 37232, USA
                [2 ]Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA
                [3 ]Department of Pathology, The Ohio State University, Columbus, OH 43210, USA
                [4 ]Department of Biochemistry, Vanderbilt University, Nashville, TN 37232, USA
                [5 ]Vanderbilt Institute of Chemical Biology- High-Throughput Screening Facility, Vanderbilt University, Nashville, TN 37232, USA
                [6 ]Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA
                [7 ]The Ohio State University Comprehensive Cancer Center – Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, Columbus, OH 43210, USA
                [8 ]Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232, USA
                Author notes
                []Corresponding author vivian.l.weiss@ 123456vumc.org
                [9]

                Technical Contact

                [10]

                Lead Contact

                Article
                S2666-1667(20)30199-4 100212
                10.1016/j.xpro.2020.100212
                7757655
                33377106
                ab45a321-0970-4990-840b-058c7bf4c6f3
                © 2020 The Authors

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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                Categories
                Protocol

                cell culture,cell-based assays,cancer,high throughput screening,organoids

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