GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
Series GSE93704 Query DataSets for GSE93704
Status Public on Jan 18, 2017
Title Chitosan promotes cancer progression and stem cell properties through Wnt signaling in colon and hepatocellular carcinoma cells
Organism Homo sapiens
Experiment type Expression profiling by array
Summary Cancer stem cells (CSCs), a small population of cancer cells, have been considered to be the origin of cancer initiation, recurrence, and metastasis. Tumor microenvironment provides crucial signals for CSCs to maintain stem cell properties and promote tumorigenesis. Therefore, establishment of an appropriate cell culture system to mimic the microenvironment for CSC studies is an important issue. In this study, we grew colon and hepatocellular carcinoma (HCC) cells on chitosan membranes and evaluated the tumor progression by transwell migration, drug resistance, microarray, and RT-PCR analysis. We also evaluated the CSC properties by flow cytometry, sphere forming assay, luciferase reporter assay, western blot, and gene knockdown. Experimental results showed that culturing cancer cells on chitosan increased cell motility, drug resistance, quiescent population, self-renewal capacity, and the expression levels of stemness and CSC marker genes, such as OCT4, NANOG, CD133, CD44, and EpCAM. Furthermore, we demonstrated that chitosan might activate canonical Wnt/β-catenin-CD44 axis signaling in CD44positive colon cancer cells and noncanonical Wnt-STAT3 signaling in CD44negative HCC cells. In conclusion, chitosan as culture substrates activated the essential signaling of CSCs and promoted CSC properties. The chitosan culture system provides a convenient platform for the research of CSC biology and screening of anticancer drugs.
Overall design Comparison of gene signatures of HT29 colon cancer cell line culture on normal cell culture dish, Chitosan membrane, or HA-grafted Chitosan membrane.
Contributor(s) Keisuke S, Chern E
Citation(s) 28367998
Submission date Jan 17, 2017
Last update date Apr 23, 2018
Contact name Keisuke Sekine
Organization name National Cancer Center Research Institute, Japan
Department Graduate School of Medicine
Lab Laboratory of Cancer Cell Systems
Street address 5-1-1 Tsukiji
City Chuo-ku
State/province Tokyo
ZIP/Postal code 104-0045
Country Japan
Platforms (1)
GPL16699 Agilent-039494 SurePrint G3 Human GE v2 8x60K Microarray 039381 (Feature Number version)
Samples (3)
GSM2460778 2D
GSM2460779 chitosan
GSM2460780 chitosan_HA
BioProject PRJNA361837

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE93704_RAW.tar 9.1 Mb (http)(custom) TAR (of TXT)
Processed data included within Sample table

| NLM | NIH | GEO Help | Disclaimer | Accessibility |
NCBI Home NCBI Search NCBI SiteMap