Identification of colorectal cancer, adenoma, and inflammatory bowel disease specific gene expression patterns using whole genomic oligonucleotide microarray system

2007 ◽  
Vol 148 (44) ◽  
pp. 2067-2079 ◽  
Author(s):  
Orsolya Galamb ◽  
Balázs Győrffy ◽  
Ferenc Sipos ◽  
Sándor Spisák ◽  
Anna Mária Németh ◽  
...  
Keyword(s):  
Gene Expression ◽  
Colorectal Cancer ◽  
Inflammatory Bowel Disease ◽  
Expression Patterns ◽  
Gene Expression Patterns ◽  
Specific Gene ◽  
Affymetrix Microarray ◽  
Inflammatory Bowel ◽  
Leave One Out ◽  
Disease Specific

A vastagbél-biopsziák nagy teljesítményű oligonukleotid microarray-vizsgálata segítségünkre lehet a helyi patofiziológiai eltérések megértésében, valamint elősegítheti a colorectalis adenomák, karcinómák és gyulladásos bélbetegségek funkcionális klasszifikációját. Módszerek: 15 vastagbélrákos, 15 adenomás, 14 gyulladásos bélbetegségben szenvedő beteg biopsziás mintájából teljes ribonukleinsav izolálását, amplifikációját és biotinos jelölését végeztük. A teljes genomszintű génexpressziós mintázat meghatározása Human Genome U133 Plus 2.0 microarray-ken történt. Két független normalizációs módszert követően a diagnosztikus génmintázat meghatározására „Prediction Analysis of Microarrays” módszert használtunk. Leave one-out lépésenkénti diszkriminanciaelemzést végeztünk. Az expressziós eredményeket valós idejű polimeráz láncreakcióval igazoltuk. Eredmények: Adenomában a „top” igazolt gének a következők voltak: CD44-antigén, met proto-onkogén, kemokin ligand-12, ADAM-szerű decizin-1 és az ATP-kötő kazetta-A8; vastagbélrákban a kollagén-IVα1, lipokalin-2, kalumenin, akvaporin-8; és gyulladásos bélbetegségben a lipokalin-2, ubikvitin D és az interferon indukálta transzmembrán-fehérje-2. A diszkriminanciaelemzéssel kapott elkülönítő gének expressziója alapján átlagosan 96,2%-os pontossággal csoportosíthatók a minták. A Taqman valós idejű polimeráz láncreakcióval vizsgált, 52 kiválasztott gén 94%-ának expressziós szintje szignifikánsan korrelált az Affymetrix microarray vizsgálatban kapott eredményekkel ( p < 0,05). Következtetések: Biopsziás minták felhasználásával sikeresen végeztünk teljes genomszintű expressziós microarray-vizsgálatot, amely alkalmasnak bizonyult elkülönítő génmintázatok azonosítására. Eredményeink további elemzésekre felhasználható génexpressziós adattárat biztosítanak.

205 - The Role of Enteric Glial Cells in Inflammatory Bowel Disease. Gene Expression Patterns Ellicited by Inflammation

2018 ◽  
Vol 154 (6) ◽  
pp. S-56
Author(s):  
Crystal Woods ◽  
Raleigh Jonscher ◽  
Bridget L. Sanford ◽  
Kenneth l Jones ◽  
Jaime Belkind-Gerson
Keyword(s):  
Gene Expression ◽  
Inflammatory Bowel Disease ◽  
Glial Cells ◽  
Bowel Disease ◽  
Disease Gene ◽  
Expression Patterns ◽  
Gene Expression Patterns ◽  
Enteric Glial Cells ◽  
Inflammatory Bowel

37 Monitoring the evolution of inflammatory bowel disease (IBD) in pediatric and adult cohorts of patients to identify biomarkers to predict cancer risk

2020 ◽  
Vol 8 (Suppl 3) ◽  
pp. A38-A38
Author(s):  
Shilpa Ravindran ◽  
Heba Sidahmed ◽  
Harshitha Manjunath ◽  
Rebecca Mathew ◽  
Tanwir Habib ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Gene Expression ◽  
Colorectal Cancer ◽  
Inflammatory Bowel Disease ◽  
Bowel Disease ◽  
Mesenchymal Transition ◽  
Increased Risk ◽  
Hamad Medical Corporation ◽  
Inflammatory Bowel ◽  
Left And Right

BackgroundPatients with inflammatory bowel disease (IBD) have increased risk of developing colorectal cancer (CRC), depending on the duration and severity of the disease. The evolutionary process in IBD is driven by chronic inflammation leading to epithelial-to-mesenchymal transition (EMT) events in colonic fibrotic areas. EMT plays a determinant role in tumor formation and progression, through the acquisition of ‘stemness’ properties and the generation of neoplastic cells. The aim of this study is to monitor EMT/cancer initiating tracts in IBD in association with the deep characterization of inflammation in order to assess the mechanisms of IBD severity and progression towards malignancy.Methods10 pediatric and 20 adult IBD patients, admitted at Sidra Medicine (SM) and Hamad Medical Corporation (HMC) respectively, have been enrolled in this study, from whom gut tissue biopsies (from both left and right side) were collected. Retrospectively collected tissues (N=10) from patients with malignancy and history of IBD were included in the study. DNA and RNA were extracted from fresh small size (2–4 mm in diameter) gut tissues using the BioMasher II (Kimble) and All Prep DNA/RNA kits (Qiagen). MicroRNA (miRNA; N=700) and gene expression (N=800) profiling have been performed (cCounter platform; Nanostring) as well as the methylation profiling microarray (Infinium Methylation Epic Bead Chip kit, Illumina) to interrogate up to 850,000 methylation sites across the genome.ResultsDifferential miRNA profile (N=27 miRNA; p<0.05) was found by the comparison of tissues from pediatric and adult patients. These miRNAs regulate: i. oxidative stress damage (e.g., miR 99b), ii. hypoxia induced autophagy; iii. genes associated with the susceptibility to IBD (ATG16L1, NOD2, IRGM), iv. immune responses, such as TH17 T cell subset (miR 29). N=6 miRNAs (miR135b, 10a196b, 125b, let7c, 375) linked with the regulation of Wnt/b-catenin, EM-transaction, autophagy, oxidative stress and play role also in cell proliferation and mobilization and colorectal cancer development were differentially expressed (p<0.05) in tissues from left and right sides of gut. Gene expression signature, including genes associated with inflammation, stemness and fibrosis, has also been performed for the IBD tissues mentioned above. Methylation sites at single nucleotide resolution have been analyzed.ConclusionsAlthough the results warrant further investigation, differential genomic profiling suggestive of altered pathways involved in oxidative stress, EMT, and of the possible stemness signature was found. The integration of data from multiple platforms will provide insights of the overall molecular determinants in IBD patients along with the evolution of the disease.Ethics ApprovalThis study was approved by Sidra Medicine and Hamad Medical Corporation Ethics Boards; approval number 180402817 and MRC-02-18-096, respectively.

scholarly journals Regional and cell-specific gene expression patterns during petal development.

1992 ◽  
Vol 4 (11) ◽  
pp. 1383-1404 ◽  
Author(s):  
G N Drews ◽  
T P Beals ◽  
A Q Bui ◽  
R B Goldberg
Keyword(s):  
Gene Expression ◽  
Expression Patterns ◽  
Gene Expression Patterns ◽  
Specific Gene ◽  
Specific Gene Expression ◽  
Petal Development

scholarly journals Transcriptome Profiling of Adipose Tissue Reveals Depot-Specific Metabolic Alterations Among Patients with Colorectal Cancer

2019 ◽  
Vol 104 (11) ◽  
pp. 5225-5237 ◽  
Author(s):  
Mariam Haffa ◽  
Andreana N Holowatyj ◽  
Mario Kratz ◽  
Reka Toth ◽  
Axel Benner ◽  
...  
Keyword(s):  
Gene Expression ◽  
Colorectal Cancer ◽  
Adipose Tissue ◽  
Large Scale ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Human Study ◽  
Subcutaneous Fat ◽  
Specific Gene ◽  
Adipose Tissue Depots

Abstract Context Adipose tissue inflammation and dysregulated energy homeostasis are key mechanisms linking obesity and cancer. Distinct adipose tissue depots strongly differ in their metabolic profiles; however, comprehensive studies of depot-specific perturbations among patients with cancer are lacking. Objective We compared transcriptome profiles of visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT) from patients with colorectal cancer and assessed the associations of different anthropometric measures with depot-specific gene expression. Design Whole transcriptomes of VAT and SAT were measured in 233 patients from the ColoCare Study, and visceral and subcutaneous fat area were quantified via CT. Results VAT compared with SAT showed elevated gene expression of cytokines, cell adhesion molecules, and key regulators of metabolic homeostasis. Increased fat area was associated with downregulated lipid and small molecule metabolism and upregulated inflammatory pathways in both compartments. Comparing these patterns between depots proved specific and more pronounced gene expression alterations in SAT and identified unique associations of integrins and lipid metabolism–related enzymes. VAT gene expression patterns that were associated with visceral fat area poorly overlapped with patterns associated with self-reported body mass index (BMI). However, subcutaneous fat area and BMI showed similar associations with SAT gene expression. Conclusions This large-scale human study demonstrates pronounced disparities between distinct adipose tissue depots and reveals that BMI poorly correlates with fat mass–associated changes in VAT. Taken together, these results provide crucial evidence for the necessity to differentiate between distinct adipose tissue depots for a correct characterization of gene expression profiles that may affect metabolic health of patients with colorectal cancer.

scholarly journals Microgenomic analysis reveals cell type-specific gene expression patterns between ray and fusiform initials within the cambial meristem ofPopulus

2008 ◽  
Vol 180 (1) ◽  
pp. 45-56 ◽  
Author(s):  
Nadia Goué ◽  
Marie-Claude Lesage-Descauses ◽  
Ewa J. Mellerowicz ◽  
Elisabeth Magel ◽  
Philippe Label ◽  
...  
Keyword(s):  
Gene Expression ◽  
Expression Patterns ◽  
Gene Expression Patterns ◽  
Specific Gene ◽  
Cell Type ◽  
Specific Gene Expression ◽  
Fusiform Initials ◽  
Cell Type Specific

scholarly journals Plant-parasitic nematodes respond to root exudate signals with host-specific gene expression patterns

2019 ◽  
Vol 15 (2) ◽  
pp. e1007503 ◽  
Author(s):  
Christopher A. Bell ◽  
Catherine J. Lilley ◽  
James McCarthy ◽  
Howard J. Atkinson ◽  
P. E. Urwin
Keyword(s):  
Gene Expression ◽  
Root Exudate ◽  
Expression Patterns ◽  
Parasitic Nematodes ◽  
Gene Expression Patterns ◽  
Specific Gene ◽  
Plant Parasitic Nematodes ◽  
Specific Gene Expression ◽  
Plant Parasitic

scholarly journals Expression Analysis of Fibronectin Type III Domain-Containing (FNDC) Genes in Inflammatory Bowel Disease and Colorectal Cancer

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Tilo Wuensch ◽  
Jonas Wizenty ◽  
Janina Quint ◽  
Wolfgang Spitz ◽  
Madeleen Bosma ◽  
...  
Keyword(s):  
Gene Expression ◽  
Colorectal Cancer ◽  
Inflammatory Bowel Disease ◽  
Bowel Disease ◽  
Inflammatory Factor ◽  
Type Iii ◽  
Fibronectin Type Iii ◽  
Inflammatory Bowel ◽  
Fibronectin Type Iii Domain ◽  
Fibronectin Type

Background. Fibronectin type III domain-containing (FNDC) proteins fulfill manifold functions in tissue development and regulation of cellular metabolism. FNDC4 was described as anti-inflammatory factor, upregulated in inflammatory bowel disease (IBD). FNDC signaling includes direct cell-cell interaction as well as release of bioactive peptides, like shown for FNDC4 or FNDC5. The G-protein-coupled receptor 116 (GPR116) was found as a putative FNDC4 receptor. We here aim to comprehensively analyze the mRNA expression of FNDC1, FNDC3A, FNDC3B, FNDC4, FNDC5, and GPR116 in nonaffected and affected mucosal samples of patients with IBD or colorectal cancer (CRC). Methods. Mucosa samples were obtained from 30 patients undergoing diagnostic colonoscopy or from surgical resection of IBD or CRC. Gene expression was determined by quantitative real-time PCR. In addition, FNDC expression data from publicly available Gene Expression Omnibus (GEO) data sets (GDS4296, GDS4515, and GDS5232) were analyzed. Results. Basal mucosal expression revealed higher expression of FNDC3A and FNDC5 in the ileum compared to colonic segments. FNDC1 and FNDC4 were significantly upregulated in IBD. None of the investigated FNDCs was differentially expressed in CRC, just FNDC3A trended to be upregulated. The GEO data set analysis revealed significantly downregulated FNDC4 and upregulated GPR116 in microsatellite unstable (MSI) CRCs. The expression of FNDCs and GPR116 was independent of age and sex. Conclusions. FNDC1 and FNDC4 may play a relevant role in the pathobiology of IBD, but none of the investigated FNDCs is regulated in CRC. GPR116 may be upregulated in advanced or MSI CRC. Further studies should validate the altered FNDC expression results on protein levels and examine the corresponding functional consequences.

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