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Sample & Assay Technologies Welcome! Cancer stem cell biology and tumor metastasis Contact Technical Support [email protected] 1-800-362-7737 Webinar related questions: [email protected] -1- 1 Sample & Assay Technologies Legal Disclaimer QIAGEN products shown here are intended for molecular biology applications. These products are not intended for the diagnosis, prevention, or treatment of a disease. For up-to-date licensing information and productspecific disclaimers, see the respective QIAGEN kit handbook or user manual. QIAGEN kit handbooks and user manuals are available at www.QIAGEN.com or can be requested from QIAGEN Technical Services or your local distributor. Cancer Stem Cells 2 Sample & Assay Technologies Topics Will be Covered Cancel stem cells (CSCs) overview Key properties of tissue stem cells Stem cell regulation and cancer The CSCs hypothesis Properties of CSCs The EMT – CSC link Pathways regulating CSC function Epigenetic regulation of CSCs Summary of QIAGEN product offerings Questions Cancer Stem Cells -3- 3 Sample & Assay Technologies Key Properties of Tissue Stem Cells Tissue stem cell has 2 key properties o o Self-renewable - the ability of going through numerous cycles of cell division while maintaining its undifferentiated state Differentiation - the ability to differentiate into specialized cell types Transit-amplifying cell The balance between self-renewal and differentiation is strictly regulated o Typically divide slowly but retain the capacity for limitless self-renewal o Division is asymmetric: produces one daughter and one committed progenitor (or transitamplifying) cell that undergoes a limited series of divisions o The progeny of the transit-amplifying cell differentiate, producing a particular tissue o The crucial role of the stem cell niche: control normal stem cell maintenance and self-renewal Cancer Stem Cells 4 Sample & Assay Technologies Stem Cell Regulation and Cancer Interactions between normal stem cells and the tissue stroma (niche) Stem cell niches are specialized microenvironments, discrete and dynamic functional domains Stem cell niches play crucial roles in the control of normal stem cell maintenance and self-renewal Normal stem cells depend on the niche to limit their expansion Stem cell niches influence stem cell behavior to govern tissue homeostasis under diverse physiological and pathological conditions Plasticity: Stem cell niches must be flexible in order to coordinate stem cell behavior with homeostasis and repair; however, the plasticity of a niche may be co-opted by cancers and chronic diseases For cancer to develop, a population of self-renewing cells must arise The Cancer Stem Cells Hypothesis Michael F. Clarke & Margaret Fuller, Stem Cells and Cancer: Two Faces of Eve, Cell (2006), 124:1111. Cancer Stem Cells 5 Sample & Assay Technologies The Cancer Stem Cells Hypothesis What is a cancer stem cell (CSC)? Definition of CSC: CSC is “a cell within a tumor that possesses the capacity to self-renew and to cause the heterogeneous lineages of cancer cells that comprise the tumor” precisely defined by AACR in 2006 CSC is a small subset of cancerous population responsible for tumor initiation and growth, which also possess the characteristic properties of quiescence, indefinite self-renewal, intrinsic resistance to chemo- and radio-therapy and capability to give rise to differentiated progeny (2012, J. Thorac. Oncol.) J.D. O'Flaherty, M. Barr, D. Fennell, D. Richard, J. Reynolds, J. O'Leary, et al., The cancer stem-cell hypothesis: its emerging role in lung cancer biology and its relevance for future therapy, J. Thorac. Oncol. (2012) 1880–1890. Cancer Stem Cells 6 Sample & Assay Technologies Properties of Cancer Stem Cells Two core traits: self-renewal and differentiation Stem cell-like: share similar biological characteristics with physiological stem cells: selfrenewal and differentiation Asymmetry: able to divide asymmetrically to yield daughter cells that remain as CSCs and daughter cells that differentiate into the neoplastic cells forming the bulk of the tumor Tumorigenicity: Have high tumorigenic capacity and are able to generate tumors with high efficiency Quiescence: Are often relatively quiescent and therefore may not be affected by therapies targeting rapidly dividing cells – resistance Heterogeneity: display phenotypic and functional heterogeneity in the same type of human cancer Plasticity: The plasticity of CSCs Express unique surface biomarkers, allowing its isolation from non-tumorigenic cells in a reproducible manner Markers used for CSC isolation: CD34, CD38, CD44, CD24, CD90, CD133, ALDH CSCs are fundamental driving force of tumor development, initiation of invasion and metastasis as well as recurrence DR Pattabiraman & R. A. Weinberg, Tackling the cancer stem cells - what challenges do they pose? Nature Reviews, 13:497, 2014 Cancer Stem Cells 7 Sample & Assay Technologies The Markers of Cancer Stem Cells Markers for CSC identification in solid tumor types CSC markers are NOT universal for any cancer type, and need to be used and defined with caution Uncertainty in cancer stem cell markers: stringent validation in primary human tumor samples is necessary CSC markers are not exclusively expressed by CSCs, and they are expressed by normal adult stem cells JP Medema, Cancer stem cells: The challenges ahead, Nature Cell Biology, 14(4): 338, 2013 Jeffrey A. Magee, etc. Cancer Stem Cells: Impact, Heterogeneity, and Uncertainty, Cancer Cell 21: 283, 2012 Cancer Stem Cells 8 Sample & Assay Technologies The Markers of Cancer Stem Cells Commonly used CSC markers are expressed by normal adult stem cells Commonly used CSC markers, their expression and function in normal tissue D.R. Pattabiraman & R. A. Weinberg, Tackling the cancer stem cells - what challenges do they pose? Nature Reviews, 13:497, 2014 Cancer Stem Cells 9 Sample & Assay Technologies The Possible Origins of Cancer Stem Cells The Cancer Stem Cells Hypothesis How do cancer stem cells arise ? Expansion of the stem cell niche - driven by alterations in the CSCs or in the niche cells themselves Alterations in cancer stem cells Genetic or epigenetic alterations in cancer stem cells Mutations may arise that imbue transit-amplifying progenitor cells with the stem cell property of self-renewal Regardless their origin, CSCs universally function in maintaining the self-renewal behavior, and have replication ability and the tumor heterogeneity. CSCs are considered to be significantly responsible for growth, metastasis, invasion and recurrence of all cancers. S Shukla & S Musthapa, Biochimica et Biophysica Acta 1840 (2014) 3494; Epigenetics of cancer stem cells: Pathways and therapeutics Title, Location, Date 10 Sample & Assay Technologies Tumor Microenvironment and CSCs – the Bed & the Bugs The crosstalk between cancer stem cells and tumor microenvironment – a model of cancer progression Tumor microenvironment modulates CSCs CSCs modify tumor microenvironment CSCs are supported by the reactive tumor microenvironment, such as hypoxia, inflammation, and stromal desmoplasia Tumor microenvironment determines the fate of CSCs: cells release growth factors and cytokines to promote CSC self renewal and asymmetric division Tumor microenvironment-derived factors include: TGF-b, FGF, PDGF, IGF-1, EGF, WNT, LIF, IL6, Hh CSCs secrete soluble factors to promote and modify tumor-supportive reactive tumor microenvironment. In breast cancer, TGF-b and VEGF activate cancer-associated fibroblasts and induce vascularization. Z. Castanoa, The bed and the bugs: Interactions between the tumor microenvironment and cancer stem cells, Seminars in Cancer Biology 22 (2012) 462– 470 11 Sample & Assay Technologies The role of CSCs in tumor immune escape The model of tumor immunoediting (3E): Elimination Equilibrium Escape The immune privilege of CSCs CSCs serve as the backbone of tumorigenesis which links the 3E of cancer immunoediting CSCs express membrane-bound and soluble factors, which enable them to efficiently modulate immune responses and protect them against immune-mediated destruction. V.S. Bruttel & J. Wischhusen, Cancer stem cell immunology: key to understanding tumorigenesis and tumor immune escape? Frontiers in immunology, 5, 360, 2014 12 Sample & Assay Technologies EMT and Cancer Stem Cells – Are They Linked? Activation of epithelial-mesenchymal transition (EMT) is important for cancer cell dissemination and metastasis. EMT activators: SNAIL, TWIST and ZEB CSCs acquire metastatic potential by undergoing an EMT M. Angela Nietoa & Amparo Canob, The epithelial–mesenchymal transition under control: Global programs to regulate epithelial plasticity. Seminars in Cancer Biology 22 (2012) 361 Thomas Brabletz, EMT and MET in Metastasis: Where Are the Cancer Stem Cells? Cancer Cell, (2012) 22, 699 13 Sample & Assay Technologies Signaling Pathways Regulating CSCs Signaling pathways regulating CSC function Diwakar R. Pattabiraman & Robert A. Weinberg, Tackling the cancer stem cells — what challenges do they pose? Nature Reviews, 2014, 13, 497 14 Sample & Assay Technologies Epigenetic regulation of CSCs Epigenetic reprogramming in origin of CSCs Epigenetic mechanisms are involved in the regulation of the embryonic and adult stem cell transcriptional program, controlling self renewal and differentiation processes. Role of DNA methylation The abrogation of DNA methyltransferase Dnmt1 expression blocked the leukemia development Heterogeneity of the methylation of CD133 promoter between CD133+ and CD133- subpopulations isolated from brain and epithelial ovarian cancer Role of chromatin remodeling Epigenetic chromatin modifiers PcG and Polycomb repressive complex (PRC) are involved in gene repression and in the maintenance of stem-cell characteristics in CSCs Role of microRNAs Samriddhi Shukla, Syed Musthapa Meeran, Epigenetics of cancer stem cells: Pathways and therapeutics, Biochimica et Biophysica Acta 1840 (2014): 3494 Purificacion Munoza, etc. Epigenetic alterations involved in cancer stem cell reprogramming, Molecular Oncology, 6, 2012, 620 15 Sample & Assay Technologies The role of microRNAs in the regulation of CSCs miRNAs have emerged as major regulators of stem cell behavior in CSCs, and the deregulation of these miRNAs promotes tumorigenesis. Yohei Shimono, et al. Downregulation of miRNA-200c Links Breast Cancer Stem Cells with Normal Stem Cells. Cell (2009), 138, 592 Samriddhi Shukla, Syed Musthapa Meeran, Epigenetics of cancer stem cells: Pathways and therapeutics, Biochimica et Biophysica Acta 1840 (2014): 3494 Purificacion Munoza, etc. Epigenetic alterations involved in cancer stem cell reprogramming, Molecular Oncology, 6, 2012, 620 16 Sample & Assay Technologies Cancer Stem Cell Research Solutions at QIAGEN Cancer Stem Cell PCR Array Gene expression miRNA Arrays DNA Methylation 17 Sample & Assay Technologies Visit QIAGEN Cancer Research Portal The most important signaling pathways and regulators involved in tumor development and metastasis Solutions & Technologies • • • • • • • • PCR array miRNA array siRNA and shRNA Mutation analysis Copy number analysis Pathway reporter Chromatin IP DNA methylation NGS http://www.qiagen.com/us/products/genes%20and%20pathways/ research%20portals/cancer/ 18 Sample & Assay Technologies Anatomy of an RT2 Profiler PCR Array Genes of interest and all the relevant controls 84 pathway-specific genes of interest 5 housekeeping genes Genomic DNA contamination control (GDC) Reverse transcription controls (RTC), n=3 Positive PCR controls (PPC), n=3 B2M, HPRT, RPL13A, GAPDH, HGDC Total RNA extraction cDNA mix with master mix & load the plate run qPCR data analysis 19 Sample & Assay Technologies Cancer Stem Cell Research: Gene expression at mRNA level Built on pathway/network analysis Cancer stem cells Pathway • • • • • • • • • • • • • • • • • • • • • Cancer stem cells Apoptosis, autophagy, necrosis Cancer pathway finder Angiogenesis Tumor metastasis EMT (epithelial-mesenchymal transition) DNA damage Oxidative stress Telomeres and telomerase Cellular senescence p53 signaling PI3K-AKT signaling Myc targets Cell cycle Growth factors mTOR signaling Cancer drug targets Breast cancer Prostate cancer Lung cancer Liver cancer http://www.qiagen.com/products/genes%20and%20pathways/complete%20biology%20list/ 20 Sample & Assay Technologies Cancer Stem Cell RT2 Profiler PCR Array Functional Gene Grouping Cancer Stem Cell Markers ABCB5, ALCAM, ALDH1A1 (RALDH1), ATXN1, BMI1 (PCGF4), CD24, CD34, CD38, CD44, ENG (EVI1), ETFA, FLOT2,GATA3, ITGA2, ITGA4 (CD49D), ITGA6, ITGB1, KIT (CD117), MS4A1, MUC1 (mucin), PECAM1, PROM1, PTPRC, THY1. Cell Proliferation EGF, ERBB2 (HER-2, NEU), KITLG (SCF), LIN28B, NOS2 (INOS). Self-Renewal BMP7, DNMT1, FGFR2. Pluripotency KLF4, LIN28A, MYC, NANOG, POU5F1 (Oct4), SOX2. Asymmetric Division FOXP1, HDAC1, MYCN, SIRT1, WNT1. Cell Migration & Metastasis AXL, ID1, CXCL8, KLF17, PLAT (TPA), PLAUR (UPAR), SNAI1 (SNAIL), TWIST1, TWIST2, ZEB1, ZEB2. Loss of Stemness ALDH1A1 (RALDH1), CD34, DACH1, FOXA2 (HNF3B), PECAM1, PTCH1. Signal Transduction Hippo Signaling: LATS1, MERTK, SAV1, TAZ, WWC1, YAP1. Hedgehog Signaling: PTCH1, SMO. Notch Signaling: DLL1 (DELTA1), DLL4, JAG1, MAML1, NOTCH1, NOTCH2. WNT Signaling: DKK1, EPCAM, FZD7, WNT1. AKT & PI3 Kinase / mTOR Signaling: ABCG2 (BCRP), GSK3B. STAT / NFκB Signaling: IKBKB (IKKβ), JAK2, NFKB1. Cancer Therapeutic Targets ABCG2 (BCRP), ATM, AXL, CHEK1, DDR1, DKK1, EPCAM, FZD7, GSK3B, ID1, IKBKB (IKKβ), JAK2, KLF17, NFKB1,PTCH1, SMO, STAT3, T GFBR1 (ALK5), WEE1. http://www.qiagen.com/search/rt2-profiler-pcr-arrays?catno=PAHS-176Z#geneglobe 21 Sample & Assay Technologies Epithelial to Mesenchymal Transition (EMT) RT2 Profiler PCR Array Functional Gene Grouping Up-Regulated During Epithelial-to-Mesenchymal Transition AHNAK, BMP1, CALD1, CAMK2N1, CDH2 (N-Cadherin), COL1A2, COL3A1, COL5A2, FN1, FOXC2, GNG11, GSC,IGFBP4, ITGA5, ITGAV, MMP2, MMP3, MMP9, MSN, SERPINE1 (PAI-1), SNAI1 (SNAIL), SNAI2, SNAI3, SOX10, SPARC,STEAP1, TCF4, TIMP1, TMEFF1, TMEM132A, TWIST1, VCAN, VIM, VPS13A, WNT5A, WNT5B. Down-Regulated During Epithelial-to-Mesenchymal Transition CAV2, CDH1 (E-Cadherin), DSP, FGFBP1, IL1RN, KRT19, MST1R (RON), NUDT13, OCLN, DESI1, RGS2, SPP1, TFPI2,TSPAN13. Differentiation & Development AKT1, BMP1, BMP2, BMP7, COL3A1, COL5A2, CTNNB1, DSP, ERBB3, F11R, FOXC2, FZD7, GSC, JAG1, KRT14, MST1R(RON), NODAL, NOTC H1, PTP4A1, SMAD2 (MADH2), SNAI1 (SNAIL), SNAI2, SOX10, TGFB2, TGFB3, TMEFF1, TWIST1,VCAN, WNT11, WNT5A, WNT5B. Cell Morphogenesis CTNNB1, FOXC2, JAG1, RAC1, SMAD2 (MADH2), SNAI1 (SNAIL), SOX10, TGFB1, TGFB2, TGFB3, TWIST1, WNT11,WNT5A. Cell Growth & Proliferation AKT1, BMP1, BMP7, CAV2, CTNNB1, EGFR (ERBB1), ERBB3, FGFBP1, FOXC2, IGFBP4, ILK, JAG1, MST1R (RON),NODAL, PDGFRB, TGFB1, T GFB2, TGFB3, TIMP1, VCAN, ZEB1. Cell Migration & Motility CALD1, CAV2, EGFR (ERBB1), FN1, ITGB1, JAG1, MSN, MST1R (RON), NODAL, PDGFRB, RAC1, STAT3, TGFB1, VIM. Cytoskeleton Regulators CAV2, KRT7, MAP1B, PLEK2, RAC1, VIM. Extracellular Matrix (ECM) & Cell Adhesion Molecules BMP1, BMP7, CDH1 (E-Cadherin), CDH2 (NCadherin), COL1A2, COL3A1, COL5A2, CTNNB1, DSC2, EGFR (ERBB1),ERBB3, F11R, FN1, FOXC2, ILK, ITGA5, ITGAV, ITGB1, MMP2, MMP3, MMP9, PTK2 (FAK), RAC1, SERPINE1 (PAI-1),SPP1, TGFB1, TGFB2, TIMP1, VCAN. Signal Transduction Estrogen Receptor Signaling: CAV2, ESR1 (ERα), KRT19, TGFB3. G-Protein Coupled Receptor Signaling: AKT1, FZD7, GNG11, RAC1, RGS2. Integrin-Mediated Signaling: COL3A1, ILK, ITGA5, ITGAV, ITGB1, PTK2 (FAK). Notch Signaling: FOXC2, JAG1, NOTCH1. Receptor Tyrosine Kinase Signaling: EGFR (ERBB1), ERBB3, PDGFRB, RGS2, SPARC. TGFβ / BMP Signaling: BMP1, BMP2, BMP7, COL3A1, SMAD2 (MADH2), TGFB1, TGFB2, TGFB3. WNT Signaling: CTNNB1, FZD7, GSK3B, WNT11, WNT5A, WNT5B. Transcription Factors CTNNB1, ESR1 (ERα), FOXC2, GSC, NOTCH1, GEMIN2, SMAD2 (MADH2), SNAI2, SNAI3, SOX10, STAT3, TCF3, TCF4,TWIST1, ZEB1, ZEB2 http://www.qiagen.com/search/rt2-profiler-pcr-arrays?catno=PAHS-0906Z#geneglobe 22 Sample & Assay Technologies Cancer Stem Cell Research: Gene expression at mRNA level Key signaling pathways involved in CSCs TGFβ / BMP Signaling Pathway Hedgehog Signaling Pathway Notch Signaling Pathway WNT Signaling Pathway Hippo Signaling Pathway JAK / STAT Signaling Pathway Polycomb & Trithorax Complexes Polycomb & Trithorax Target Genes Title, Location, Date 23 Sample & Assay Technologies Human Mouse Rat Rhesus macaque Drosophila Dog Pig PCR arrays are available for 14 species! Cow Chicken Horse Zebrafish Rabbit CHO (Chinese hamster ovary) C.elegans 24 Sample & Assay Technologies Custom PCR arrays – Create your own panels • • • • • • RNA-seq verification Biomarker discovery CRISPR / RNAi knockdown verification Bioprocessing optimization Biological response investigation Interspecies study (14 species available) Email: [email protected] 25 Sample & Assay Technologies Isolation of miRNA and miRNA profiling Profile miRNAs with miScript miRNA PCR Arrays miRNeasy Isolation Target Identification miRNA Studies Expression miScript miRNA PCR Arrays Function miRNA mimics & inhibitors http://www.qiagen.com/us/products/catalog/assay-technologies/mirna/miscript-mirna-pcr-arrays/ 26 Sample & Assay Technologies Cancer Stem Cells miScript miRNA PCR Array Functional Gene Grouping Pluripotency & Differentiation: let-7a-5p, miR-122-5p, miR-122-5p, miR-134-5p, miR-137, miR-145-5p, miR-181a-5p, miR-181c-5p, miR-183-5p, miR-184, miR-200a-3p, miR-200c-3p, miR-320d, miR-34a-5p. Self-Renewal & Proliferation: miR-134-5p, miR-137, miR-141-3p, miR-182-5p, miR-183-5p, miR-184, miR-200b-3p, miR-203a, miR21-5p, miR-296-5p, miR-302a-3p, miR-429, miR-9-5p, miR-96-5p. Migration & Metastasis: let-7a-5p, let-7a-5p, let-7b-5p, let-7c-5p, let-7d-5p, let-7e-5p, let-7f-5p, let-7g-5p, let-7i-5p, miR-16-5p, miR17-5p, miR-181b-5p, miR-200a-3p, miR-200b-3p, miR-200c-3p, miR-22-3p, miR-302a-3p, miR-373-3p, miR-517a-3p, miR-9-5p. Oncogenesis & Tumor Suppression: let-7a-5p, let-7b-5p, let-7c-5p, let-7d-5p, let-7e-5p, let-7f-5p, let-7g-5p, let-7i-5p, miR-181b-5p, miR-373-3p, miR-517a-3p. Differentially Expressed miRNAs: Upregulated: miR-105-5p, miR-106b-5p, miR-125b-5p, miR-132-3p, miR-135b-5p, miR-142-3p, miR-146a-5p, miR-146b-5p, miR150-5p, miR-155-5p, miR-16-2-3p, miR-193a-3p, miR-199b-5p, miR-20a-5p, miR-221-3p, miR-222-3p, miR-223-3p, miR-25-3p, miR299-5p, miR-29b-3p, miR-31-5p, miR-409-3p, miR-423-5p, miR-455-3p, miR-455-5p, miR-494-3p, miR-516a-5p, miR-522-3p, miR744-5p. Downregulated: miR-103a-3p, miR-10a-5p, miR-1181, miR-1207-5p, miR-128-3p, miR-130a-3p, miR-15a-5p, miR-15b-5p, miR-1855p, miR-425-5p, miR-451a, miR-486-5p, miR-548d-5p, miR-636. Regulated: miR-107, miR-142-5p, miR-151a-3p, miR-365a-3p. http://www.qiagen.com/search/miscript-mirna-pcr-arrays?catno=MIHS-118Z#geneglobe 27 Sample & Assay Technologies miScript miRNA PCR System Complete miRNA quantification system 1. miScript II RT Kit HiFlex Buffer: Unparalleled flexibility for miRNA and mRNA quantification from a single cDNA preparation HiSpec Buffer: Unmatched specificity for mature miRNA profiling 2. miScript miRNA PCR Arrays miRNome Pathway-focused 3. miScript PreAMP Kit Optional step for small or precious samples Full miRNome profiling from as little as 1 ng RNA 4. Assays miScript Primer Assays miScript Precursor Assays QuantiTect Primer Assays 5. miScript SYBR Green PCR Kit QuantiTect SYBR Green PCR Master Mix Universal Primer 6. miScript miRNA PCR Array data analysis software Straightforward, free data analysis Pre-formatted, single use PCR arrays with wet-lab verified assays 28 Sample & Assay Technologies miScript miRNA PCR Arrays Workflow 1. 2. 1. Isolate total RNA 1 hour 2. Perform Reversetranscription 3. 2 minutes 3. Prepare PCR pre-mix 4. 2 hours 4. Load PCR arrays & Perform real-time PCR 5. Analyze data 5. 15 minutes 29 Sample & Assay Technologies DNA Methylation Profiling EpiTect Methyl qPCR Array workflow • • • • • • • • • • • • • • • • • • • • • • • • • • • Breast Cancer Colon Cancer Epithelial to Mesenchymal Transition (EMT) Gastric Cancer Leukemia & Lymphoma Liver Cancer Lung Cancer Melanoma Prostate Cancer Tumor Suppressor Genes Apoptosis Cell Cycle Cytokine Production DNA Repair Homeobox (HOX) Genes Inflammatory Response and Autoimmunity Mental Disorders Notch Signaling Pathway Polycomb & Trithorax Complexes Stem Cell Transcription Factors Stress & Toxicity T Cell and B Cell Activation T Helper Cell Differentiation Tumor Suppressor Genes Toll Like Receptor Signaling TGF-β/BMP Signaling Wnt Signaling 30 Sample & Assay Technologies Cignal Reporter Arrays or Assays Measure signaling pathway activity in cultured cells Cancer 10-pathway Reporter Array ■ Dual-luciferase format ■ GFP format ■ DNA and Lenti assay ■ 45 signaling pathways http://www.qiagen.com/search/cignal-reporter-assay-kits 31 Sample & Assay Technologies We provide service – send samples to us & receive results . Whole Genome Illumina Gene Expression Profiling Illumina Genotyping . Pathway / Focused Panel . Individual Gene / Locus . Mutation Profiling Methylation PCR Array miRNA PCR Array NGS Mutation Detection Methylation qPCR NGS Sample Preparation – DNA, RNA Extraction and Purification Cells, Tissue or Biofluids Fixed Tissue Small Sample . http://www.qiagen.com/products/catalog/services/ 32 Sample & Assay Technologies Topics covered today Cancel stem cells (CSCs) overview Key properties of tissue stem cells Stem cell regulation and cancer The CSCs hypothesis Properties of CSCs The EMT – CSC link Pathways regulating CSC function Epigenetic regulation of CSCs Summary of QIAGEN product offerings Questions Cancer Stem Cells - 33 - 33 Sample & Assay Technologies Questions? Thank you for attending today’s webinar! Contact QIAGEN Call: 1-800-426-8157 Email: [email protected] Wei Cao, Ph.D. [email protected] 34