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Wang X, Niu J, Qian S, Shen S, Straubinger RM, Qu J. Species-Deconvolved Proteomics for In Situ Investigation of Tumor-Stroma Interactions after Treatment of Pancreatic Cancer Patient-Derived Xenografts with Combined Gemcitabine and Paclitaxel. J Proteome Res 2023; 22:2436-2449. [PMID: 37311110 PMCID: PMC10561664 DOI: 10.1021/acs.jproteome.3c00164] [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] [Indexed: 06/15/2023]
Abstract
Tumor-stroma interactions are critical in pancreatic ductal adenocarcinoma (PDAC) progression and therapeutics. Patient-derived xenograft (PDX) models recapitulate tumor-stroma interactions, but the conventional antibody-based immunoassay is inadequate to discriminate tumor and stromal proteins. Here, we describe a species-deconvolved proteomics approach embedded in IonStar that can unambiguously quantify the tumor (human-derived) and stromal (mouse-derived) proteins in PDX samples, enabling unbiased investigation of tumor and stromal proteomes with excellent quantitative reproducibility. With this strategy, we studied tumor-stroma interactions in PDAC PDXs that responded differently to Gemcitabine combined with nab-Paclitaxel (GEM+PTX) treatment. By analyzing 48 PDX animals 24 h/192 h after treatment with/without GEM+PTX, we quantified 7262 species-specific proteins under stringent cutoff criteria, with high reproducibility. For the PDX sensitive to GEM+PTX, the drug-dysregulated proteins in tumor cells were involved in suppressed oxidative phosphorylation and the TCA cycle, and in the stroma, inhibition of glycolytic activity was predominant, suggesting a relieved reverse Warburg effect by the treatment. In GEM+PTX-resistant PDXs, protein changes suggested extracellular matrix deposition and activation of tumor cell proliferation. Key findings were validated by immunohistochemistry (IHC). Overall, this approach provides a species-deconvolved proteomic platform that could advance cancer therapeutic studies by enabling unbiased exploration of tumor-stroma interactions in the large number of PDX samples required for such investigations.
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Affiliation(s)
- Xue Wang
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14203, United States
| | - Jin Niu
- Department of Pharmaceutical Sciences, University at Buffalo, SUNY, Buffalo, New York 14203, United States
| | - Shuo Qian
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14203, United States
| | - Shichen Shen
- New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, New York 14203, United States
| | - Robert M. Straubinger
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14203, United States
- Department of Pharmaceutical Sciences, University at Buffalo, SUNY, Buffalo, New York 14203, United States
- New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, New York 14203, United States
| | - Jun Qu
- Department of Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York 14203, United States
- Department of Pharmaceutical Sciences, University at Buffalo, SUNY, Buffalo, New York 14203, United States
- New York State Center of Excellence in Bioinformatics and Life Sciences, Buffalo, New York 14203, United States
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Castro KR, Prado KM, Lorenzon AR, Hoshida MS, Alves EA, Francisco RPV, Zugaib M, Marques ALX, Silva ECO, Fonseca EJS, Borbely AU, Veras MM, Bevilacqua E. Serum From Preeclamptic Women Triggers Endoplasmic Reticulum Stress Pathway and Expression of Angiogenic Factors in Trophoblast Cells. Front Physiol 2022; 12:799653. [PMID: 35185601 PMCID: PMC8855099 DOI: 10.3389/fphys.2021.799653] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/17/2021] [Indexed: 01/27/2023] Open
Abstract
Preeclampsia (PE) is a hypertensive disease of pregnancy-associated with placental cell death and endoplasmic reticulum (ER) stress. It is unknown whether systemic factors aggravate placental dysfunction. We investigated whether serum factors in pregnant women with PE activate ER stress and unfolded protein responses (UPRs) in placental explants and trophoblast cells lineage. We cultured placental explants from third-trimester term placentas from control non-preeclamptic (NPE) pregnant women with serum from women with PE or controls (NPE). In PE-treated explants, there was a significant increase in gene expression of GADD34, CHOP, and SDF2. At the protein level, GRP78, SDF2, p-eIF2α, and p-eIF2α/eIF2α ratio were also augmented in treated explants. Assays were also performed in HTR8/SV-neo trophoblast cell line to characterize the putative participation of trophoblast cells. In PE serum-treated protein levels of p-eIF2a and the ratio p-elF2 α/elF2α increased after 12 h of treatment, while the gene expression of GADD34, ATF4, and CHOP was greater than control. Increased expression of SDF2 was also detected after 24 h-cultured HTR8/SV-neo cells. PE serum increased sFLT1 gene expression and decreased PlGF gene expression in placental explants. Morphologically, PE serum increased the number of syncytial knots and reduced placental cell metabolism and viability. Analysis of the serum of pregnant women with PE through Raman spectroscopy showed changes in amino acids, carotenoids, lipids, and DNA/RNA, which may be associated with the induction of ER stress found in chorionic villi treated with this serum. In conclusion, this study provides evidence that the serum of pregnant women with PE may impact placental villi changing its morphology, viability, and secreted functional factors while triggers ER stress and an UPR. The differences between PE and control sera include molecules acting as inducing factors in these processes. In summary, the results obtained in our assays suggest that after the development of PE, the serum profile of pregnant women may be an additional factor that feeds a continuous imbalance of placental homeostasis. In addition, this study may expand the possibilities for understanding the pathogenesis of this disorder.
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Affiliation(s)
- Karla R. Castro
- Laboratory for Studies in Maternal-Fetal Interactions and Placenta, Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Karen M. Prado
- Laboratory for Studies in Maternal-Fetal Interactions and Placenta, Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Aline R. Lorenzon
- Laboratory for Studies in Maternal-Fetal Interactions and Placenta, Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- Huntington Medicina Reprodutiva—Eugin Group, São Paulo, Brazil
| | - Mara S. Hoshida
- Department of Obstetrics and Gynecology, School of Medicine, University of São Paulo – HCFMUSP, São Paulo, Brazil
| | - Eliane A. Alves
- Department of Obstetrics and Gynecology, School of Medicine, University of São Paulo – HCFMUSP, São Paulo, Brazil
| | - Rossana P. V. Francisco
- Department of Obstetrics and Gynecology, School of Medicine, University of São Paulo – HCFMUSP, São Paulo, Brazil
| | - Marcelo Zugaib
- Department of Obstetrics and Gynecology, School of Medicine, University of São Paulo – HCFMUSP, São Paulo, Brazil
| | - Aldilane L. X. Marques
- Cell Biology Laboratory, Institute of Health and Biological Sciences, Federal University of Alagoas, Maceio, Brazil
| | - Elaine C. O. Silva
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas, Maceio, Brazil
| | - Eduardo J. S. Fonseca
- Optics and Nanoscopy Group, Institute of Physics, Federal University of Alagoas, Maceio, Brazil
| | - Alexandre U. Borbely
- Cell Biology Laboratory, Institute of Health and Biological Sciences, Federal University of Alagoas, Maceio, Brazil
| | - Mariana M. Veras
- Laboratory of Experimental Air Pollution, Department of Pathology, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Estela Bevilacqua
- Laboratory for Studies in Maternal-Fetal Interactions and Placenta, Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- *Correspondence: Estela Bevilacqua,
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3
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Lorenzon AR, Moreli JB, de Macedo Melo R, Namba FY, Staff AC, Yung HW, Burton GJ, Bevilacqua E. Stromal Cell-Derived Factor (SDF) 2 and the Endoplasmic Reticulum Stress Response of Trophoblast Cells in Gestational Diabetes Mellitus and In vitro Hyperglycaemic Condition. Curr Vasc Pharmacol 2021; 19:201-209. [PMID: 32504504 DOI: 10.2174/1570161118666200606222123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIM The endoplasmic reticulum (ER) stress response and the unfolded protein response (UPR) are essential cellular mechanisms to ensure the proper functioning of ER in adverse conditions. However, activation of these pathways has also been associated with insulin resistance and cell death in pathological conditions such as diabetes mellitus. In the present study, we investigated whether stromal cell-derived factor 2 (SDF2)-an ER stress-responsive factor-is related to ER response in placental cells exposed to maternal gestational diabetes mellitus (GDM) or to a hyperglycaemic in vitro condition. OBJECTIVE The study aimed to investigate the role of SDF2 in BeWo cells , a trophoblast cell line originating from choriocarcinoma , and in placental tissue under hyperglycaemic conditions. METHODS Protein levels of SDF2 and UPR factors, glucose-related protein 78 (GRP78) and eukaryotic initiation factor 2 alpha (elF2 alpha) were evaluated in the placentae of pregnant women diagnosed with GDM and treated by diet-control (insulin was added when necessary). The mRNA expression of SDF2 and UPR factors CHOP and sXBP1 were assessed in cultured BeWo cells challenged with glucose and treated with or without insulin. RESULTS SDF2 expression was increased in the placentae of GDM women treated with diet. However, its values were similar to those of normoglycemic controls when the GDM women were treated with insulin and diet. BeWo cells cultured with high glucose and insulin showed decreased SDF2 expression, while high glucose increased CHOP and sXBP1 expression, which was then significantly reverted with insulin treatment. CONCLUSION Our findings extend the understanding of ER stress and SDF2 expression in placentae exposed to hyperglycaemia, highlighting the relevance of insulin in reducing the levels of ER stress factors in placental cells. Understanding the effect of ER stress partners such as SDF2 on signalling pathways involved in gestation, complicated by hyperglycaemia, is pivotal for basic biomedical research and may lead to new therapeutic possibilities.
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Affiliation(s)
- Aline R Lorenzon
- Institute of Biomedical Sciences, Department of Cell and Developmental Biology, University of São Paulo, 05508-000 São Paulo, SP, Brazil
| | | | - Rafaela de Macedo Melo
- Institute of Biomedical Sciences, Department of Cell and Developmental Biology, University of São Paulo, 05508-000 São Paulo, SP, Brazil
| | - Felipe Yukio Namba
- Institute of Biomedical Sciences, Department of Cell and Developmental Biology, University of São Paulo, 05508-000 São Paulo, SP, Brazil
| | - Anne Cathrine Staff
- Faculty of Medicine, University of Oslo, Norway and Division of Obstetrics and Gynaecology, Oslo University Hospital, Oslo, Norway
| | - Hong Wa Yung
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - Graham J Burton
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom
| | - Estela Bevilacqua
- Institute of Biomedical Sciences, Department of Cell and Developmental Biology, University of São Paulo, 05508-000 São Paulo, SP, Brazil
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Tanaka M, Shiota M, Koyama M, Nakayama J, Yashiro M, Semba K, Goda N. Generation of Rat Monoclonal Antibodies Specific for Human Stromal Cell-Derived Factor-2. Monoclon Antib Immunodiagn Immunother 2020; 39:23-26. [PMID: 31916900 PMCID: PMC7044778 DOI: 10.1089/mab.2019.0043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Stromal cell-derived factor-2 (SDF-2) is reportedly involved in multiple endoplasmic reticulum (ER) functions, including the misfolded protein catabolic process, protein glycosylation, and ER protein quality control. However, the precise molecular and cellular functions of SDF-2 remain unknown. Previously, we discovered that SDF-2 mediates acquired resistance to oxaliplatin in human gastric cancer cells. In this study, we have generated SDF-2-specific monoclonal antibodies (mAbs), using the rat medial iliac lymph node method, as a tool to explore novel mechanisms of oxaliplatin resistance. The antibodies detected endogenous human SDF-2 in immunoblotting analyses. In addition, immunoprecipitation analyses revealed the availability of these antibodies for human SDF-2. Thus, these mAbs will be available to elucidate molecular and cellular functions of SDF-2 in cancer cells.
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Affiliation(s)
- Masako Tanaka
- Waseda Institute for Advanced Study, Waseda University, Tokyo, Japan
| | - Masayuki Shiota
- Research Support Platform, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Masaru Koyama
- Department of Life Science and Medical BioScience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Jun Nakayama
- Department of Life Science and Medical BioScience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Masakazu Yashiro
- Department of Molecular Oncology and Therapeutics, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Kentaro Semba
- Department of Life Science and Medical BioScience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Nobuhito Goda
- Department of Life Science and Medical BioScience, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
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Lorenzon-Ojea AR, Yung HW, Burton GJ, Bevilacqua E. The potential contribution of stromal cell-derived factor 2 (SDF2) in endoplasmic reticulum stress response in severe preeclampsia and labor-onset. Biochim Biophys Acta Mol Basis Dis 2019; 1866:165386. [PMID: 30776414 DOI: 10.1016/j.bbadis.2019.01.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 12/17/2018] [Accepted: 01/08/2019] [Indexed: 11/24/2022]
Abstract
Endoplasmic reticulum (ER) stress occurs when the protein folding machinery in the cell is unable to cope with newly synthesized proteins, which results in an accumulation of misfolded proteins in the ER lumen. In response, the cell activates a cellular signaling pathway known as the Unfolded Protein Response (UPR), aiming to restore cellular homeostasis. Activation and exacerbation of the UPR have been described in several human pathologies, including cancer and neurological disorders, and in some gestational diseases such as preeclampsia and gestational diabetes. This review explores the participation of stromal cell-derived factor 2 (SDF2) in UPR pathways, shows new information and discusses its exacerbation regarding protein expression in severe preeclampsia and labor, both of which are associated with ER stress.
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Affiliation(s)
- Aline R Lorenzon-Ojea
- Institute of Biomedical Sciences, Department of Cell and Developmental Biology, University of São Paulo, São Paulo, SP, Brazil.
| | - Hong Wa Yung
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Graham J Burton
- Centre for Trophoblast Research, Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, UK
| | - Estela Bevilacqua
- Institute of Biomedical Sciences, Department of Cell and Developmental Biology, University of São Paulo, São Paulo, SP, Brazil.
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Grasso E, Gori S, Soczewski E, Fernández L, Gallino L, Vota D, Martínez G, Irigoyen M, Ruhlmann C, Lobo TF, Salamone G, Mattar R, Daher S, Leirós CP, Ramhorst R. Impact of the Reticular Stress and Unfolded Protein Response on the inflammatory response in endometrial stromal cells. Sci Rep 2018; 8:12274. [PMID: 30116009 PMCID: PMC6095878 DOI: 10.1038/s41598-018-29779-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 07/18/2018] [Indexed: 11/15/2022] Open
Abstract
During decidualization, endometrial stromal cells undergo reticular stress (RS) and unfolded protein response (UPR), allowing the endoplasmic reticulum-expansion and immunomodulators production. Physiological RS generates the activation of sensing proteins, inflammasome activation and mature-IL-1β secretion, associated with pro-implantatory effects. We focus on the impact of RS and UPR on decidualized cells and whether they induce a physiological sterile inflammatory response through IL-1β production. Human endometrial stromal cell line (HESC) after decidualization treatment with MPA + dibutyryl-cAMP (Dec) increased the expression of RS-sensors (ATF6, PERK and IRE1α) and UPR markers (sXBP1 and CHOP) in comparison with Non-dec cells. Then we found increased NLRP3 expression in Dec cells compared with Non-dec cells. In fact STF-083010 (an IRE1α inhibitor) prevented this increase. Downstream, increased levels of active caspase-1 on Dec cells were detected by FAM-Flica Caspase-1 associated with an increase in IL-1β production. Moreover, the treatment with STF-083010 decreased the invasion index observed in Dec cells, evaluated by an in vitro model of implantation. In endometrial biopsies from recurrent spontaneous abortion patients an increased expression of IRE1α was found in comparison with fertile women; while recurrent implantation failure samples showed a lower expression of sXBP1, TXNIP and NLRP3 than fertile women, suggesting that RS/UPR tenors might condition endometrial receptivity.
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Grants
- PICT 2013-1632 Ministry of Science, Technology and Productive Innovation, Argentina | Agencia Nacional de Promoción Científica y Tecnológica (National Agency for Science and Technology, Argentina)
- PICT 2014-0657 Ministry of Science, Technology and Productive Innovation, Argentina | Agencia Nacional de Promoción Científica y Tecnológica (National Agency for Science and Technology, Argentina)
- PICT 2016-464 Ministry of Science, Technology and Productive Innovation, Argentina | Agencia Nacional de Promoción Científica y Tecnológica (National Agency for Science and Technology, Argentina)
- 20020130100040 and 20020090200034 Universidad de Buenos Aires (University of Buenos Aires)
- Ministry of Science, Technology and Productive Innovation, Argentina | Agencia Nacional de Promoción Científica y Tecnológica (National Agency for Science and Technology, Argentina)
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Affiliation(s)
- E Grasso
- CONICET, Universidad de Buenos Aires. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales IQUIBICEN, Buenos Aires, Argentina
| | - S Gori
- CONICET, Universidad de Buenos Aires. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales IQUIBICEN, Buenos Aires, Argentina
- Institute of Experimental Medicine IMEX-CONICET, National Academy of Sciences, Buenos Aires, Argentina
| | - E Soczewski
- CONICET, Universidad de Buenos Aires. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales IQUIBICEN, Buenos Aires, Argentina
| | - L Fernández
- CONICET, Universidad de Buenos Aires. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales IQUIBICEN, Buenos Aires, Argentina
| | - L Gallino
- CONICET, Universidad de Buenos Aires. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales IQUIBICEN, Buenos Aires, Argentina
| | - D Vota
- CONICET, Universidad de Buenos Aires. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales IQUIBICEN, Buenos Aires, Argentina
| | - G Martínez
- Instituto de Fertilidad San Isidro, Buenos Aires, Argentina
| | - M Irigoyen
- Instituto de Fertilidad San Isidro, Buenos Aires, Argentina
| | - C Ruhlmann
- Instituto de Fertilidad San Isidro, Buenos Aires, Argentina
| | - T F Lobo
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - G Salamone
- Institute of Experimental Medicine IMEX-CONICET, National Academy of Sciences, Buenos Aires, Argentina
| | - R Mattar
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - S Daher
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - C Pérez Leirós
- CONICET, Universidad de Buenos Aires. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales IQUIBICEN, Buenos Aires, Argentina
| | - R Ramhorst
- CONICET, Universidad de Buenos Aires. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales IQUIBICEN, Buenos Aires, Argentina.
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Griffiths JA, Scialdone A, Marioni JC. Mosaic autosomal aneuploidies are detectable from single-cell RNAseq data. BMC Genomics 2017; 18:904. [PMID: 29178830 PMCID: PMC5702132 DOI: 10.1186/s12864-017-4253-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 11/01/2017] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Aneuploidies are copy number variants that affect entire chromosomes. They are seen commonly in cancer, embryonic stem cells, human embryos, and in various trisomic diseases. Aneuploidies frequently affect only a subset of cells in a sample; this is known as "mosaic" aneuploidy. A cell that harbours an aneuploidy exhibits disrupted gene expression patterns which can alter its behaviour. However, detection of aneuploidies using conventional single-cell DNA-sequencing protocols is slow and expensive. METHODS We have developed a method that uses chromosome-wide expression imbalances to identify aneuploidies from single-cell RNA-seq data. The method provides quantitative aneuploidy calls, and is integrated into an R software package available on GitHub and as an Additional file of this manuscript. RESULTS We validate our approach using data with known copy number, identifying the vast majority of aneuploidies with a low rate of false discovery. We show further support for the method's efficacy by exploiting allele-specific gene expression levels, and differential expression analyses. CONCLUSIONS The method is quick and easy to apply, straightforward to interpret, and represents a substantial cost saving compared to single-cell genome sequencing techniques. However, the method is less well suited to data where gene expression is highly variable. The results obtained from the method can be used to investigate the consequences of aneuploidy itself, or to exclude aneuploidy-affected expression values from conventional scRNA-seq data analysis.
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Affiliation(s)
- Jonathan A. Griffiths
- Cancer Research UK Cambridge Institute, University of Cambridge, CB2 0RE, Cambridge, UK
| | - Antonio Scialdone
- EMBL-European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Cambridge, CB10 1SD UK
- Present Address: Institute of Epigenetics and Stem Cells, Helmholtz Zentrum München, München, Germany
| | - John C. Marioni
- Cancer Research UK Cambridge Institute, University of Cambridge, CB2 0RE, Cambridge, UK
- EMBL-European Bioinformatics Institute (EMBL-EBI), Wellcome Genome Campus, Cambridge, CB10 1SD UK
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, CB10 1SA, Cambridge, UK
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