Unknown,Transcriptomics,Genomics,Proteomics

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Expression data from colon fibroblasts treated with Sonic hedgehog homolog (SHH)


ABSTRACT: Canonical Hedgehog (Hh) signaling regulates the expression of genes that are critical to the patterning and development of a variety of organ systems. In adult, both ligand-dependent and ligand-independent Hh pathway activation are known to promote tumorigenesis. Recent studies have shown that in tumors promoted by Hh ligand, activation occurs within the stromal microenvironment (Yauch et al., 2009). In situ hybridization of the pathway target gene, Ptch1, shows that signaling is located at stromal perivascular fibroblast-like cells in xenograft tumor sections derived from Hh-expressing colorectal cancer cell lines. To study the downstream genes regulated by Hh signaling, we treated a primary human colon myofibroblast, CCD-18Co, with SHH (1 ug/ml) or no treatment (control) in serum-free medium supplemented with 0.1% BSA for 72 hrs and performed microarray analysis (Affymetrix U133P) on these samples. Three biological replicates of SHH stimulated and three replicates of unstimulated primary colon myofibroblast cells CCD-18Co were used in the experiment to analyze their gene expression.

ORGANISM(S): Homo sapiens

SUBMITTER: Weiwei Chen 

PROVIDER: E-GEOD-29316 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Canonical hedgehog signaling augments tumor angiogenesis by induction of VEGF-A in stromal perivascular cells.

Chen Weiwei W   Tang Tracy T   Eastham-Anderson Jeff J   Dunlap Debra D   Alicke Bruno B   Nannini Michelle M   Gould Stephen S   Yauch Robert R   Modrusan Zora Z   DuPree Kelly J KJ   Darbonne Walter C WC   Plowman Greg G   de Sauvage Frederic J FJ   Callahan Christopher A CA  

Proceedings of the National Academy of Sciences of the United States of America 20110519 23


Hedgehog (Hh) signaling is critical to the patterning and development of a variety of organ systems, and both ligand-dependent and ligand-independent Hh pathway activation are known to promote tumorigenesis. Recent studies have shown that in tumors promoted by Hh ligands, activation occurs within the stromal microenvironment. Testing whether ligand-driven Hh signaling promotes tumor angiogenesis, we found that Hh antagonism reduced the vascular density of Hh-producing LS180 and SW480 xenografts.  ...[more]

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