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Dehghan Banadaki M, Torabi S, Rockward A, Strike WD, Noble A, Keck JW, Berry SM. Simple SARS-CoV-2 concentration methods for wastewater surveillance in low resource settings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168782. [PMID: 38000737 PMCID: PMC10842712 DOI: 10.1016/j.scitotenv.2023.168782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 11/26/2023]
Abstract
Wastewater-based epidemiology (WBE) measures pathogens in wastewater to monitor infectious disease prevalence in communities. Due to the high dilution of pathogens in sewage, a concentration method is often required to achieve reliable biomarker signals. However, most of the current concentration methods rely on expensive equipment and labor-intensive processes, which limits the application of WBE in low-resource settings. Here, we compared the performance of four inexpensive and simple concentration methods to detect SARS-CoV-2 in wastewater samples: Solid Fraction, Porcine Gastric Mucin-conjugated Magnetic Beads, Calcium Flocculation-Citrate Dissolution (CFCD), and Nanotrap® Magnetic Beads (NMBs). The NMBs and CFCD methods yielded the highest concentration performance for SARS-CoV-2 (∼16-fold concentration and ∼ 41 % recovery) and require <45 min processing time. CFCD has a relatively low consumable cost (<$2 per four sample replicates). All methods can be performed with basic laboratory equipment and minimal electricity usage which enables further application of WBE in remote areas and low resource settings.
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Affiliation(s)
| | - Soroosh Torabi
- Department of Mechanical Engineering, College of Engineering, University of Kentucky, United States
| | - Alexus Rockward
- Department of Biomedical Engineering, College of Engineering, University of Kentucky, United States
| | - William D Strike
- Department of Biomedical Engineering, College of Engineering, University of Kentucky, United States
| | - Ann Noble
- Department of Mechanical Engineering, College of Engineering, University of Kentucky, United States
| | - James W Keck
- WWAMI School of Medicine, University of Alaska Anchorage, United States
| | - Scott M Berry
- Department of Mechanical Engineering, College of Engineering, University of Kentucky, United States; Department of Biomedical Engineering, College of Engineering, University of Kentucky, United States.
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2
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Filon M, Yang B, Purohit TA, Schehr J, Singh A, Bigarella M, Lewis P, Denu J, Lang J, Jarrard DF. Development of a multiplex assay to assess activated p300/CBP in circulating prostate tumor cells. Oncotarget 2023; 14:738-746. [PMID: 37477521 PMCID: PMC10360924 DOI: 10.18632/oncotarget.28477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/06/2023] [Indexed: 07/22/2023] Open
Abstract
Reduced SIRT2 deacetylation and increased p300 acetylation activity leads to a concerted mechanism of hyperacetylation at specific histone lysine sites (H3K9, H3K14, and H3K18) in castration-resistant prostate cancer (CRPC). We examined whether circulating tumor cells (CTCs) identify patients with altered p300/CBP acetylation. CTCs were isolated from 13 advanced PC patients using Exclusion-based Sample Preparation (ESP) technology. Bound cells underwent immunofluorescent staining for histone modifying enzymes (HMEs) of interest and image capture with NIS-Elements software. Using the cBioPortal PCF/SU2C dataset, the response of CRPC to androgen receptor signaling inhibitors (ARSI) was analyzed in 50 subjects. Staining optimization and specificity revealed clear expression of acetyl-p300, acetyl-H3K18, and SIRT2 on CTCs (CK positive, CD45 negative cells). Exposure to A-485, a selective p300/CBP catalytic inhibitor, reduced p300 and H3K18 acetylation. In CRPC patients, a-p300 strongly correlated with its target acetylated H3k18 (Pearson's R = 0.61), and SIRT2 expression showed robust negative correlation with a-H3k18 (R = -0.60). A subgroup of CRPC patients (6/11; 55%) demonstrated consistent upregulation of acetylation based on these markers. To examine the clinical impact of upregulation of the CBP/p300 axis, CRPC patients with reduced deacetylase SIRT2 expression demonstrate shorter response times to ARSI therapy (5.9 vs. 12 mo; p = 0.03). A subset of CRPC patients demonstrate increased p300/CBP activity based on a novel CTC biomarker assay. With further development, this biomarker suite may be used to identify candidates for CBP/p300 acetylation inhibitors in clinical development.
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Affiliation(s)
- Mikolaj Filon
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA
| | - Bing Yang
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA
| | - Tanaya A. Purohit
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA
| | - Jennifer Schehr
- Department of Hematology/Oncology, University of Wisconsin, Madison, WI 53705, USA
| | - Anupama Singh
- Department of Hematology/Oncology, University of Wisconsin, Madison, WI 53705, USA
| | - Marcelo Bigarella
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA
| | - Peter Lewis
- Biomolecular Chemistry, University of Wisconsin, Madison, WI 53705, USA
| | - John Denu
- Biomolecular Chemistry, University of Wisconsin, Madison, WI 53705, USA
| | - Joshua Lang
- Department of Hematology/Oncology, University of Wisconsin, Madison, WI 53705, USA
- Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53705, USA
| | - David F. Jarrard
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA
- Carbone Comprehensive Cancer Center, University of Wisconsin, Madison, WI 53705, USA
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3
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Fan Y, Dai R, Guan X, Lu S, Yang C, Lv X, Li X. Rapid automatic nucleic acid purification system based on gas-liquid immiscible phase. J Sep Sci 2023; 46:e2200801. [PMID: 36661136 DOI: 10.1002/jssc.202200801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/11/2023] [Accepted: 01/14/2023] [Indexed: 01/21/2023]
Abstract
The continuous expansion of nucleic acid detection applications has resulted in constant developments in rapid, low-consumption, and highly automated nucleic acid extraction methods. Nucleic acid extraction using magnetic beads across an immiscible phase interface offers significant simplification and parallelization potential. The gas-liquid immiscible phase valve eliminates the requirement for complicated cassettes and is suitable for automation applications. By analyzing the process of magnetic beads crossing the gas-liquid interface, we utilized a low magnetic field strength to drive large magnetic bead packages to cross the gas-liquid interface, providing a solution of high magnetic bead recovery rate for solid-phase extraction with a low-surfactant system based on gas-liquid immiscible phase valve. The recovery rate of magnetic beads was further improved to 90%-95% and the carryover of the reagents was below 1%. Consequently, a chip and an automatic system were developed to verify the applicability of this method for nucleic acid extraction. The Hepatitis B virus serum standard was used for the extraction test. The extraction of four samples was performed within 7 minutes, with nucleic acid recovery maintained above 80% and good purity. Thus, through analysis and experiments, a fast, highly automated, and low-consumption nucleic acid recovery method was proposed in this study.
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Affiliation(s)
- Yunlong Fan
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology, Beijing, P. R. China
| | - Rongji Dai
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology, Beijing, P. R. China
| | - Xuejun Guan
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology, Beijing, P. R. China
| | - Shuyu Lu
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology, Beijing, P. R. China
| | - Chunhua Yang
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology, Beijing, P. R. China
| | - Xuefei Lv
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology, Beijing, P. R. China
| | - Xiaoqiong Li
- School of Life Science, Key Laboratory of Convergence Medical Engineering System and Healthcare Technology, Beijing Institute of Technology, Beijing, P. R. China
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4
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Fakhraldeen SA, Berry SM, Beebe DJ, Alexander CM. Enhanced Ribonucleoprotein Immunoprecipitation (RIP) Technique for the Identification of mRNA Species in Ribonucleoprotein Complexes. Bio Protoc 2022; 12:e4526. [PMID: 36313200 PMCID: PMC9548516 DOI: 10.21769/bioprotoc.4526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 12/29/2022] Open
Abstract
RNA binding proteins (RBPs) are critical regulators of cellular phenotypes, and dysregulated RBP expression is implicated in various diseases including cancer. A single RBP can bind to and regulate the expression of many RNA molecules via a variety of mechanisms, including translational suppression, prevention of RNA degradation, and alteration in subcellular localization. To elucidate the role of a specific RBP within a given cellular context, it is essential to first identify the group of RNA molecules to which it binds. This has traditionally been achieved using cross-linking-based assays in which cells are first exposed to agents that cross-link RBPs to nucleic acids and then lysed to extract and purify the RBP-nucleic acid complexes. The nucleic acids within the mixture are then released and analyzed via conventional means (e.g., microarray analysis, qRT-PCR, RNA sequencing, or Northern blot). While cross-linking-based ribonucleoprotein immunoprecipitation (RIP) has proven its utility within some contexts, it is technically challenging, inefficient, and suboptimal given the amount of time and resources (e.g., cells and antibodies) required. Additionally, these types of studies often require the use of over-expressed versions of proteins, which can introduce artifacts. Here, we describe a streamlined version of RIP that utilizes exclusion-based purification technologies. This approach requires significantly less starting material and resources compared to traditional RIP approaches, takes less time, which is tantamount given the labile nature of RNA, and can be used with endogenously expressed proteins. The method described here can be used to study RNA-protein interactions in a variety of cellular contexts. Graphical abstract.
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Affiliation(s)
- Saja A. Fakhraldeen
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, Wisconsin, USA
,
*For correspondence:
| | - Scott M. Berry
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - David J. Beebe
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Caroline M. Alexander
- McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, Wisconsin, USA
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5
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Rodems TS, Heninger E, Stahlfeld CN, Gilsdorf CS, Carlson KN, Kircher MR, Singh A, Krueger TEG, Beebe DJ, Jarrard DF, McNeel DG, Haffner MC, Lang JM. Reversible epigenetic alterations regulate class I HLA loss in prostate cancer. Commun Biol 2022; 5:897. [PMID: 36050516 PMCID: PMC9437063 DOI: 10.1038/s42003-022-03843-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 08/15/2022] [Indexed: 11/09/2022] Open
Abstract
Downregulation of HLA class I (HLA-I) impairs immune recognition and surveillance in prostate cancer and may underlie the ineffectiveness of checkpoint blockade. However, the molecular mechanisms regulating HLA-I loss in prostate cancer have not been fully explored. Here, we conducted a comprehensive analysis of HLA-I genomic, epigenomic and gene expression alterations in primary and metastatic human prostate cancer. Loss of HLA-I gene expression was associated with repressive chromatin states including DNA methylation, histone H3 tri-methylation at lysine 27, and reduced chromatin accessibility. Pharmacological DNA methyltransferase (DNMT) and histone deacetylase (HDAC) inhibition decreased DNA methylation and increased H3 lysine 27 acetylation and resulted in re-expression of HLA-I on the surface of tumor cells. Re-expression of HLA-I on LNCaP cells by DNMT and HDAC inhibition increased activation of co-cultured prostate specific membrane antigen (PSMA)27-38-specific CD8+ T-cells. HLA-I expression is epigenetically regulated by functionally reversible DNA methylation and chromatin modifications in human prostate cancer. Methylated HLA-I was detected in HLA-Ilow circulating tumor cells (CTCs), which may serve as a minimally invasive biomarker for identifying patients who would benefit from epigenetic targeted therapies.
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Affiliation(s)
- Tamara S Rodems
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Erika Heninger
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.,Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Charlotte N Stahlfeld
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Cole S Gilsdorf
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Kristin N Carlson
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Madison R Kircher
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Anupama Singh
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.,Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Timothy E G Krueger
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - David J Beebe
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.,Department of Biomedical Engineering, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.,Department of Pathology, University of Wisconsin, Madison, 3170 UW Medical Foundation Centennial Building, 1685 Highland Ave., Madison, WI, 53705, USA
| | - David F Jarrard
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.,Department of Urology, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Douglas G McNeel
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Michael C Haffner
- Divisions of Human Biology and Clinical Research, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave, N., Seattle, WA, 98109, USA.,Department of Pathology, University of Washington, 1959 NE Pacific St., Seattle, WA, 98195, USA.,Department of Pathology, Johns Hopkins School of Medicine, 600N Wolfe St., Baltimore, MD, 21287, USA
| | - Joshua M Lang
- University of Wisconsin Carbone Cancer Center, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA. .,Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.
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6
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Castaño N, Kim S, Martin AM, Galli SJ, Nadeau KC, Tang SKY. Exponential magnetophoretic gradient for the direct isolation of basophils from whole blood in a microfluidic system. LAB ON A CHIP 2022; 22:1690-1701. [PMID: 35438713 PMCID: PMC9080715 DOI: 10.1039/d2lc00154c] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Despite their rarity in peripheral blood, basophils play important roles in allergic disorders and other diseases including sepsis and COVID-19. Existing basophil isolation methods require many manual steps and suffer from significant variability in purity and recovery. We report an integrated basophil isolation device (i-BID) in microfluidics for negative immunomagnetic selection of basophils directly from 100 μL of whole blood within 10 minutes. We use a simulation-driven pipeline to design a magnetic separation module to apply an exponentially increasing magnetic force to capture magnetically tagged non-basophils flowing through a microtubing sandwiched between magnetic flux concentrators sweeping across a Halbach array. The exponential profile captures non-basophils effectively while preventing their excessive initial buildup causing clogging. The i-BID isolates basophils with a mean purity of 93.9% ± 3.6% and recovery of 95.6% ± 3.4% without causing basophil degradation or unintentional activation. Our i-BID has the potential to enable basophil-based point-of-care diagnostics such as rapid allergy assessment.
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Affiliation(s)
- Nicolas Castaño
- Department of Mechanical Engineering, Stanford University, USA.
| | - Sungu Kim
- Department of Mechanical Engineering, Stanford University, USA.
| | - Adrian M Martin
- Department of Mechanical Engineering, Stanford University, USA.
| | - Stephen J Galli
- Department of Pathology, Stanford University, USA.
- Department of Microbiology and Immunology, Stanford University, USA
| | - Kari C Nadeau
- Department of Medicine and Pediatrics, with courtesy in Otolaryngology and in Population Science and Epidemiology, Stanford University, USA.
- Sean N. Parker Center for Allergy and Asthma Research, Stanford University, USA
| | - Sindy K Y Tang
- Department of Mechanical Engineering, Stanford University, USA.
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7
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Schehr JL, Sethakorn N, Schultz ZD, Hernandez CI, Bade RM, Eyzaguirre D, Singh A, Niles DJ, Henderson L, Warrick JW, Berry SM, Sundling KE, Beebe DJ, Leal TA, Lang JM. Analytical validation and initial clinical testing of quantitative microscopic evaluation for PD-L1 and HLA I expression on circulating tumor cells from patients with non-small cell lung cancer. Biomark Res 2022; 10:26. [PMID: 35468853 PMCID: PMC9040226 DOI: 10.1186/s40364-022-00370-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 03/25/2022] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION PD-L1 expression in non-small cell lung cancer (NSCLC) predicts response to immune checkpoint blockade, however is an imperfect biomarker given tumor heterogeneity, and the antigen presentation pathway requiring other components including HLA I expression. HLA I downregulation may contribute to resistance, warranting its evaluation in attempts to guide patient selection. In addition, earlier detection of acquired resistance could prompt earlier change in treatment and prolong patient survival. Analysis of circulating tumor cells (CTCs) captures heterogeneity across multiple sites of metastases, enables detection of changes in tumor burden that precede radiographic response, and can be obtained in serial fashion. METHODS To quantify the expression of both PD-L1 and HLA I on CTCs, we developed exclusion-based sample preparation technology, achieving high-yield with gentle magnetic movement of antibody-labeled cells through virtual barriers of surface tension. To achieve clinical-grade quantification of rare cells, we employ high quality fluorescence microscopy image acquisition and automated image analysis together termed quantitative microscopy. RESULTS In preparation for clinical laboratory implementation, we demonstrate high precision and accuracy of these methodologies using a diverse set of control materials. Preliminary testing of CTCs isolated from patients with NSCLC demonstrate heterogeneity in PD-L1 and HLA I expression and promising clinical value in predicting PFS in response to PD-L1 targeted therapies. CONCLUSIONS By confirming high performance, we ensure compatibility for clinical laboratory implementation and future application to better predict and detect resistance to PD-L1 targeted therapy in patients with NSCLC.
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Affiliation(s)
| | - Nan Sethakorn
- Department of Medicine, University of Wisconsin, Madison, WI, USA
| | | | | | - Rory M Bade
- Carbone Cancer Center, University of Wisconsin, Madison, WI, USA
| | - Diego Eyzaguirre
- Carbone Cancer Center, University of Wisconsin, Madison, WI, USA
| | - Anupama Singh
- Carbone Cancer Center, University of Wisconsin, Madison, WI, USA
| | - David J Niles
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI, 53705, USA
| | | | - Jay W Warrick
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI, 53705, USA
| | - Scott M Berry
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI, 53705, USA
| | - Kaitlin E Sundling
- Wisconsin State Lab of Hygiene, Madison, WI, USA
- Department of Pathology and Laboratory Medicine, University of Wisconsin, Madison, WI, USA
| | - David J Beebe
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI, 53705, USA
| | - Ticiana A Leal
- Carbone Cancer Center, University of Wisconsin, Madison, WI, USA
- Department of Medicine, University of Wisconsin, Madison, WI, USA
| | - Joshua M Lang
- Carbone Cancer Center, University of Wisconsin, Madison, WI, USA.
- Department of Medicine, University of Wisconsin, Madison, WI, USA.
- Department of Medicine, Carbone Cancer Center, University of Wisconsin, 1111 Highland Avenue, WIMR 7151, Madison, WI, 53705, USA.
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8
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Rodems TS, Juang DS, Stahlfeld CN, Gilsdorf CS, Krueger TEG, Heninger E, Zhao SG, Sperger JM, Beebe DJ, Haffner MC, Lang JM. SEEMLIS: a flexible semi-automated method for enrichment of methylated DNA from low-input samples. Clin Epigenetics 2022; 14:37. [PMID: 35272673 PMCID: PMC8908705 DOI: 10.1186/s13148-022-01252-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 02/18/2022] [Indexed: 01/02/2023] Open
Abstract
Background DNA methylation alterations have emerged as hallmarks of cancer and have been proposed as screening, prognostic, and predictive biomarkers. Traditional approaches for methylation analysis have relied on bisulfite conversion of DNA, which can damage DNA and is not suitable for targeted gene analysis in low-input samples. Here, we have adapted methyl-CpG-binding domain protein 2 (MBD2)-based DNA enrichment for use on a semi-automated exclusion-based sample preparation (ESP) platform for robust and scalable enrichment of methylated DNA from low-input samples, called SEEMLIS. Results We show that combining methylation-sensitive enzyme digestion with ESP-based MBD2 enrichment allows for single gene analysis with high sensitivity for GSTP1 in highly impure, heterogenous samples. We also show that ESP-based MBD2 enrichment coupled with targeted pre-amplification allows for analysis of multiple genes with sensitivities approaching the single cell level in pure samples for GSTP1 and RASSF1 and sensitivity down to 14 cells for these genes in highly impure samples. Finally, we demonstrate the potential clinical utility of SEEMLIS by successful detection of methylated gene signatures in circulating tumor cells (CTCs) from patients with prostate cancer with varying CTC number and sample purity. Conclusions SEEMLIS is a robust assay for targeted DNA methylation analysis in low-input samples, with flexibility at multiple steps. We demonstrate the feasibility of this assay to analyze DNA methylation in prostate cancer cells using CTCs from patients with prostate cancer as a real-world example of a low-input analyte of clinical importance. In summary, this novel assay provides a platform for determining methylation signatures in rare cell populations with broad implications for research as well as clinical applications. Supplementary Information The online version contains supplementary material available at 10.1186/s13148-022-01252-4.
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Affiliation(s)
- Tamara S Rodems
- University of Wisconsin Carbone Cancer Center, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Duane S Juang
- Department of Pathology, University of Washington, 1959 NE Pacific St., Seattle, WA, 98195, USA
| | - Charlotte N Stahlfeld
- University of Wisconsin Carbone Cancer Center, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Cole S Gilsdorf
- University of Wisconsin Carbone Cancer Center, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Tim E G Krueger
- University of Wisconsin Carbone Cancer Center, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Erika Heninger
- University of Wisconsin Carbone Cancer Center, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.,Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Shuang G Zhao
- Department of Human Oncology, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Jamie M Sperger
- University of Wisconsin Carbone Cancer Center, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.,Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - David J Beebe
- University of Wisconsin Carbone Cancer Center, Madison, 1111 Highland Ave., Madison, WI, 53705, USA.,Department of Pathology, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Michael C Haffner
- Divisions of Human Biology and Clinical Research, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave, N., Seattle, WA, 98109, USA.,Department of Pathology, University of Washington, 1959 NE Pacific St., Seattle, WA, 98195, USA.,Department of Pathology, Johns Hopkins School of Medicine, 600 N Wolfe St., Baltimore, MD, 21287, USA
| | - Joshua M Lang
- University of Wisconsin Carbone Cancer Center, Madison, 1111 Highland Ave., Madison, WI, 53705, USA. .,Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA. .,7151 WI Institutes for Medical Research, 1111 Highland Ave., Madison, WI, 53705, USA.
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9
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Molecular characterization of hypoxanthine guanine phosphoribosyltransferase mutant T cells in human blood: The concept of surrogate selection for immunologically relevant cells. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2022; 789:108414. [PMID: 35690417 PMCID: PMC9188651 DOI: 10.1016/j.mrrev.2022.108414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 03/01/2022] [Accepted: 03/08/2022] [Indexed: 11/23/2022]
Abstract
Somatic cell gene mutations arise in vivo due to replication errors during DNA synthesis occurring spontaneously during normal DNA synthesis or as a result of replication on a DNA template damaged by endogenous or exogenous mutagens. In principle, changes in the frequencies of mutant cells in vivo in humans reflect changes in exposures to exogenous or endogenous DNA damaging insults, other factors being equal. It is becoming increasingly evident however, that somatic mutations in humans have a far greater range of interpretations. For example, mutations in lymphocytes provide invaluable probes for in vivo cellular and molecular processes, providing identification of clonal amplifications of these cells in autoimmune and infectious diseases, transplantation recipients, paroxysmal nocturnal hemoglobinuria (PNH), and cancer. The assay for mutations of the X-chromosomal hypoxanthine guanine phosphoribosyltransferase (HPRT) gene has gained popular acceptance for this purpose since viable mutant cells can be recovered for molecular and other analyses. Although the major application of the HPRT T cell assay remains human population monitoring, the enrichment of activated T cells in the mutant fraction in individuals with ongoing immunological processes has demonstrated the utility of surrogate selection, a method that uses somatic mutation as a surrogate marker for the in vivo T cell proliferation that underlies immunological processes to investigate clinical disorders with immunological features. Studies encompassing a wide range of clinical conditions are reviewed. Despite the historical importance of the HPRT mutation system in validating surrogate selection, there are now additional mutational and other methods for identifying immunologically active T cells. These methods are reviewed and provide insights for strategies to extend surrogate selection in future studies.
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10
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Heninger E, Kosoff D, Rodems TS, Sethakorn N, Singh A, Gungurthi H, Carlson KN, Yang B, Gilsdorf C, Pasch CA, Deming DA, Ellis L, Beebe DJ, Jarrard DF, Lang JM. Live cell molecular analysis of primary prostate cancer organoids identifies persistent androgen receptor signaling. Med Oncol 2021; 38:135. [PMID: 34581895 PMCID: PMC8478748 DOI: 10.1007/s12032-021-01582-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 09/12/2021] [Indexed: 11/29/2022]
Abstract
Prostate Cancer (PC) is a disease with remarkable tumor heterogeneity that often manifests in significant intra-patient variability with regards to clinical outcomes and treatment response. Commonly available PC cell lines do not accurately reflect the complexity of this disease and there is critical need for development of new models to recapitulate the intricate hierarchy of tumor pathogenesis. In current study, we established ex vivo primary patient-derived cancer organoid (PDCO) cultures from prostatectomy specimens of patients with locally advanced PC. We then performed a comprehensive multi-parameter characterization of the cellular composition utilizing a novel approach for live-cell staining and direct imaging in the integrated microfluidic Stacks device. Using orthogonal flow cytometry analysis, we demonstrate that primary PDCOs maintain distinct subsets of epithelial cells throughout culture and that these cells conserve expression of androgen receptor (AR)-related elements. Furthermore, to confirm the tumor-origin of the PDCOs we have analyzed the expression of PC-associated epigenetic biomarkers including promoter methylation of the GSTP1, RASSF1 and APC and RARb genes by employing a novel microfluidic rare-event screening protocol. These results demonstrate that this ex vivo PDCO model recapitulates the complexity of the epithelial tumor microenvironment of multifocal PC using orthogonal analyses. Furthermore, we propose to leverage the Stacks microfluidic device as a high-throughput, translational platform to interrogate phenotypic and molecular endpoints with the capacity to incorporate a complex tumor microenvironment.
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Affiliation(s)
- Erika Heninger
- University of Wisconsin Carbone Cancer Center, 1111 Highland Ave., Madison, USA
| | - David Kosoff
- Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Tamara S Rodems
- University of Wisconsin Carbone Cancer Center, 1111 Highland Ave., Madison, USA
| | - Nan Sethakorn
- Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Anupama Singh
- University of Wisconsin Carbone Cancer Center, 1111 Highland Ave., Madison, USA
| | - Harshitha Gungurthi
- University of Wisconsin Carbone Cancer Center, 1111 Highland Ave., Madison, USA
| | - Kristin N Carlson
- University of Wisconsin Carbone Cancer Center, 1111 Highland Ave., Madison, USA
| | - Bing Yang
- Department of Urology, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Cole Gilsdorf
- University of Wisconsin Carbone Cancer Center, 1111 Highland Ave., Madison, USA
| | - Cheri A Pasch
- University of Wisconsin Carbone Cancer Center, 1111 Highland Ave., Madison, USA
| | - Dustin A Deming
- Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Leigh Ellis
- Division of Medical Oncology, Department of Medicine, Cedars-Sinai Medical Center, Samuel Oschin Comprehensive Cancer Institute, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - David J Beebe
- Department of Pathology and Laboratory Medicine, 1111 Highland Ave., Madison, WI, 53705, USA
| | - David F Jarrard
- Department of Urology, 1111 Highland Ave., Madison, WI, 53705, USA
| | - Joshua M Lang
- University of Wisconsin Carbone Cancer Center, 1111 Highland Ave., Madison, USA. .,Department of Medicine, University of Wisconsin, Madison, 1111 Highland Ave., Madison, WI, 53705, USA. .,Wisconsin Institutes for Medical Research, Rm 7151, 1111 Highland Ave., Madison, WI, 53705, USA.
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11
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Bade RM, Schehr JL, Emamekhoo H, Gibbs BK, Rodems TS, Mannino MC, Desotelle JA, Heninger E, Stahlfeld CN, Sperger JM, Singh A, Wolfe SK, Niles DJ, Arafat W, Steinharter JA, Jason Abel E, Beebe DJ, Wei XX, McKay RR, Choueri TK, Lang JM. Development and initial clinical testing of a multiplexed circulating tumor cell assay in patients with clear cell renal cell carcinoma. Mol Oncol 2021; 15:2330-2344. [PMID: 33604999 PMCID: PMC8410529 DOI: 10.1002/1878-0261.12931] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 12/31/2020] [Accepted: 02/07/2021] [Indexed: 12/21/2022] Open
Abstract
Although therapeutic options for patients with advanced renal cell carcinoma (RCC) have increased in the past decade, no biomarkers are yet available for patient stratification or evaluation of therapy resistance. Given the dynamic and heterogeneous nature of clear cell RCC (ccRCC), tumor biopsies provide limited clinical utility, but liquid biopsies could overcome these limitations. Prior liquid biopsy approaches have lacked clinically relevant detection rates for patients with ccRCC. This study employed ccRCC-specific markers, CAIX and CAXII, to identify circulating tumor cells (CTC) from patients with metastatic ccRCC. Distinct subtypes of ccRCC CTCs were evaluated for PD-L1 and HLA-I expression and correlated with patient response to therapy. CTC enumeration and expression of PD-L1 and HLA-I correlated with disease progression and treatment response, respectively. Longitudinal evaluation of a subset of patients demonstrated potential for CTC enumeration to serve as a pharmacodynamic biomarker. Further evaluation of phenotypic heterogeneity among CTCs is needed to better understand the clinical utility of this new biomarker.
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Affiliation(s)
- Rory M. Bade
- Carbone Cancer CenterUniversity of Wisconsin‐MadisonWIUSA
| | | | | | | | | | | | | | - Erika Heninger
- Carbone Cancer CenterUniversity of Wisconsin‐MadisonWIUSA
| | | | - Jamie M. Sperger
- Carbone Cancer CenterUniversity of Wisconsin‐MadisonWIUSA
- Department of MedicineUniversity of Wisconsin‐MadisonWIUSA
| | - Anupama Singh
- Carbone Cancer CenterUniversity of Wisconsin‐MadisonWIUSA
| | | | - David J. Niles
- Department of Biomedical EngineeringUniversity of Wisconsin‐MadisonWIUSA
| | - Waddah Arafat
- Carbone Cancer CenterUniversity of Wisconsin‐MadisonWIUSA
- Department of MedicineUniversity of Wisconsin‐MadisonWIUSA
| | - John A. Steinharter
- Lank Center for Genitourinary OncologyDana‐Farber Cancer InstituteHarvard UniversityBostonMAUSA
| | - E. Jason Abel
- Carbone Cancer CenterUniversity of Wisconsin‐MadisonWIUSA
- Department of MedicineUniversity of Wisconsin‐MadisonWIUSA
| | - David J. Beebe
- Department of Biomedical EngineeringUniversity of Wisconsin‐MadisonWIUSA
| | - Xiao X. Wei
- Lank Center for Genitourinary OncologyDana‐Farber Cancer InstituteHarvard UniversityBostonMAUSA
| | - Rana R. McKay
- Lank Center for Genitourinary OncologyDana‐Farber Cancer InstituteHarvard UniversityBostonMAUSA
- Moores Cancer CenterUniversity of California San DiegoLa JollaCAUSA
| | - Toni K. Choueri
- Lank Center for Genitourinary OncologyDana‐Farber Cancer InstituteHarvard UniversityBostonMAUSA
| | - Joshua M. Lang
- Carbone Cancer CenterUniversity of Wisconsin‐MadisonWIUSA
- Department of MedicineUniversity of Wisconsin‐MadisonWIUSA
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12
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Kelley SO, Pantel K. A New Era in Liquid Biopsy: From Genotype to Phenotype. Clin Chem 2020; 66:89-96. [PMID: 31811003 DOI: 10.1373/clinchem.2019.303339] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 08/22/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND Liquid biopsy, in which tumor cells and tumor-derived biomolecules are collected from the circulation, is an attractive strategy for the management of cancer that allows the serial monitoring of patients during treatment. The analysis of circulating DNA produced by tumors provides a means to collect genotypic information about the molecular profile of a patient's cancer. Phenotypic information, which may be highly relevant for therapeutic selection, is ideally derived from intact cells, necessitating the analysis of circulating tumor cells (CTCs). CONTENT Recent advances in profiling CTCs at the single-cell level are providing new ways to collect critical phenotypic information. Analysis of secreted proteins, surface proteins, and intracellular RNAs for CTCs at the single-cell level is now possible and provides a means to quantify molecular markers that are involved with the mechanism of action of the newest therapeutics. We review the latest technological advances in this area along with related breakthroughs in high-purity CTC capture and in vivo profiling approaches, and we also present a perspective on how genotypic and phenotypic information collected via liquid biopsies is being used in the clinic. SUMMARY Over the past 5 years, the use of liquid biopsy has been adopted in clinical medicine, representing a major paradigm shift in how molecular testing is used in cancer management. The first tests to be used are genotypic measurements of tumor mutations that affect therapeutic effectiveness. Phenotypic information is also clinically relevant and essential for monitoring proteins and RNA sequences that are involved in therapeutic response.
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Affiliation(s)
- Shana O Kelley
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Canada
| | - Klaus Pantel
- Institute of Tumor Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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13
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Zhong R, Hou L, Zhao Y, Wang T, Wang S, Wang M, Xu D, Sun Y. A 3D mixing-based portable magnetic device for fully automatic immunofluorescence staining of γ-H2AX in UVC-irradiated CD4 + cells. RSC Adv 2020; 10:29311-29319. [PMID: 35521108 PMCID: PMC9055984 DOI: 10.1039/d0ra03925j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 08/02/2020] [Indexed: 11/22/2022] Open
Abstract
Immunofluorescence (IF) is a common method used in cell biology. The conventional protocol for IF staining is time and labor-intensive, operator dependent and reagent-consuming. Magnetic Bead (MB)-based microdevices are frequently utilized in cellular assays, but integration of simple and efficient mixing with downstream multi-step manipulation of MBs for automatic IF staining is still challenging. We herein present a portable, inexpensive and integratable device for MB-based automatic IF staining. First, a front-end cell capture step is performed using a 3D-mixing module, which is built upon a novel mechanism named ec-2MagRotors and generates periodically changing 3D magnetic fields. A 5-fold enhancement of cell capture efficiency was attained even with a low bead-to-cell concentration ratio (5 : 1), when conducting magnetic 3D mixing. Second, a 1D-moving module is employed downstream to automatically manipulate MB–cell complexes for IF staining. Further, a simplified protocol for staining of γ-H2AX, a biomarker widely used in evaluation of cell radiation damage, is presented for proof-of-principle study of the magnetic device. Using UVC-irradiated CD4+ cells as samples, our device achieved fully automatic γ-H2AX staining within 40 minutes at room temperature and showed a linear dose–response relationship. The developed portable magnetic device is automatic, efficient, cost-effective and simple-to-use, holding great potential for applications in different IF assays. A 3D mixing-based portable magnetic device to perform on-chip efficient cell capture and automatic intracellular immunofluorescence (IF) staining is presented.![]()
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Affiliation(s)
- Runtao Zhong
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Liangsheng Hou
- College of Marine Engineering
- Dalian Maritime University, Dalian
- Dalian 116026
- China
| | - Yingbo Zhao
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Tianle Wang
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Shaohua Wang
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Mengyu Wang
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Dan Xu
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
| | - Yeqing Sun
- Institute of Environmental Systems Biology
- Dalian Maritime University
- Dalian 116026
- China
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14
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Tian F, Liu C, Lin L, Chen Q, Sun J. Microfluidic analysis of circulating tumor cells and tumor-derived extracellular vesicles. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.05.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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