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Gene expression profile of gastric cancer stem cells after CD44 knockdown

ABSTRACT: We did the microarray to further compare the changes of gene expression between gastric cancer stem cells with CD44 knockdown by lentivirus and gastric cancer stem cells by scamble short hairpin RNA.

ORGANISM(S): Homo sapiens

PROVIDER: GSE58143 | GEO | 2015/12/31

SECONDARY ACCESSION(S): PRJNA251375

REPOSITORIES: GEO

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Gene expression profile of gastric cancer stem cells after CD44 knockdown

Project description:We did the microarray to further compare the changes of gene expression between gastric cancer stem cells with CD44 knockdown by lentivirus and gastric cancer stem cells by scamble short hairpin RNA. Gastric cancer stem cells (Lentivirus) were infected with lentivirus that expressed human CD44-speciï¬c short hairpin RNA (shRNA). Control group of gastric cancer stem cells (Vector group) were only infected with scramble shRNA.

2015-12-31 | E-GEOD-58143 | biostudies-arrayexpress

Expression data from CD44-knockdown MDA-MB-231 human breast cancer cells.

2013-04-24 | GSE45613 | GEO

Expression data from CD44-knockdown MDA-MB-231 human breast cancer cells.

Project description:CD44, an adhesion molecule that binds to extracellular matrix, primarily to hyaluronan (HA), has been implicated in cancer cell migration, invasion, and metastasis. CD44 has also recently been recognized as a marker for stem cells of several types of cancer. However, the roles of CD44 in the development of bone metastasis still remain unclear. To explore this issue, we established the MDA-MB-231 human breast cancer cells stably expressing short hairpin RNA against CD44. The CD44-knockdown MDA-MB-231 cells (MDA-MB-231 shCD44-2 and shCD44-3) were analyzed. As control, MDA-MB-231 cells stably expressing shRNA against firefly luciferase (shLuc) were used. Total of three samples. No replicates.

2013-04-24 | E-GEOD-45613 | biostudies-arrayexpress

Expression data of CD44 variant-positive and -negative cells derived from gastric cancer JSC153 cells

Project description:Cancer stem cells are subpopulation of cancer cells with highly tumorigenic and drug-resistant potential and are believed to contribute to the early phases of drug resistance. In gastric cancer, a population of cancer cells expressing splicing variants of a cell surface transmembrane glycoprotein, CD44, (CD44v), particularly CD44v9 containing variant exons 8–10, was shown to possess cancer stem cell properties. We sorted CD44v9-positive and -negative cells from patient-derived gastric cancer JSC15-3 cells and examined gene expression profile of the cells (JSC153CD44v9Plus, JSC153CD44v9Minus).

2020-03-31 | GSE129747 | GEO

Study on the effects of CD44 knockdown in glioblastoma multiforme cells in combination with Temozolomide

Project description:Our goal is to investigate the effects of CD44 knockdown alone and in combination with Temozolomide on glioblastoma multiforme cells. To achieve this, we treated U251 cells that had been transfected with either shCtrl lentivirus or shCD44 lentivirus with either DMSO or Temozolomide.

2023-08-31 | GSE225869 | GEO

The homing receptor CD44 is involved in the progression of precancerous gastric lesions in patients infected with Helicobacter pylori and in development of mucous metaplasia in mice (human)

Project description:Gastric cancer continues to be one of the most common cancers, with the third highest cancer-related mortality in the world. After infection with Helicobacter pylori, a cascade of inflammatory events that can lead to gastric cancer is triggered. This inflammatory response to the infection is characterized by the infiltration of mononuclear and polymorphonuclear cells into the infected mucosa. The transition of these cells from the circulation to the tissues is mediated through the interaction of receptors on the immune cells and their ligands in the endothelial compartment. CD44 is the receptor for hyaluronan, but it also interacts with osteopontin and collagen, among other molecules. Previous reports have shown that CD44 expression is increased in advanced gastric lesions. However, the association of this molecule with the progression of these lesions over time has not been investigated. In addition, there is a lack of understanding of the CD44-dependent cellular processes that lead to gastritis, and possibly to gastric cancer. Here we studied a subset of subjects from a cohort of individuals with various degrees of gastric inflammation to determine gene expression changes associated with disease progression over a period of six years. We report that CD44 expression is significantly increased in individuals whose gastric lesions progressed over time (from multifocal atrophic gastritis to intestinal metaplasia or from intestinal metaplasia to dysplasia) along the gastric precancerous cascade. We also show that CD44-/- mice develop less severe and less extensive Helicobacter pylori-induced metaplasia, and show fewer infiltrating Gr1+ cells compared to wild type mice. Thus, we present data suggesting that CD44 is associated with disease progression. Mechanisms associated with these effects include induction of interferon gamma responses.

2015-12-17 | GSE69144 | GEO

The homing receptor CD44 is involved in the progression of precancerous gastric lesions in patients infected with Helicobacter pylori and in development of mucous metaplasia in mice (mouse)

2015-12-17 | GSE69145 | GEO

CD44+ or CD44– tumor cells isolated from K19-Wnt1/C2mE mice

Project description:We hypothesized that CD44+ tumor cells might have an increased capacity for reactive oxygen species (ROS) defense in the gastric tumors of K19-Wnt1/C2mE mice. To address this possibility, we examined the expression of antioxidant genes in tumor cells isolated from K19-Wnt1/C2mE mice by fluorescence-activated cell sorting (FACS). Lineage marker (Lin)–negative cells that were CD44+ or CD44– were thus isolated from the gastric tumors of 30-week-old K19-Wnt1/C2mE mice and subjected to cDNA microarray analysis. The expression of several key antioxidant genes, including those for glutathione peroxidase (GPX) and peroxiredoxin (PRDX) isoforms, was found to be increased in CD44+ tumor cells compared with that in CD44– cells.

2010-03-17 | GSE20913 | GEO

Human gastric cancer cells MKN28 gene expression results: MKN28 cells vs. MKN28 cells with transcription factor Sox2 overexpression

Project description:Gene expression profiling of gastric cancer cells MKN28 infected with Sox2 lentivirus comparing with MKN28 infected with control lentivirus

2013-05-22 | GSE45391 | GEO

Evaluation of gene expression between CD44+ and CD44- cells in colonospheres

Project description:To identify genes that are differentially expressed between CD44+ and CD44- cells in colonospheres, we have employed whole genome microarray expression profiling as a discovery platform. Colonospheres from four colon cancer patients were sorted into CD44+ and CD44- cells using the FACS Aria II Cell Sorter, and total RNA extracted from the cells were labeled with Cy3 and used for microarray analyses with Agilent Whole Human Genome Oligo Microarrays. Gene expression in fluorescence-activated cell-sorted CD44+ and CD44- cells derived from four colon cancer patients was measured.

2012-12-07 | E-GEOD-38706 | biostudies-arrayexpress

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