Gene Set: FUJII_YBX1_TARGETS_UP

Standard name FUJII_YBX1_TARGETS_UP
Systematic name M15267
Brief description Genes up-regulated in MCF-7 cells (breast cancer) after knockdown of YBX1 [GeneID=4904] by RNAi.
Full description or abstract In our present study, we examined whether nuclear localization of Y-box binding protein-1 (YB-1) is associated with the expression of epidermal growth factor receptors (EGFR), hormone receptors, and other molecules affecting breast cancer prognosis. The expression of nuclear YB-1, clinicopathologic findings, and molecular markers [EGFR, HER2, estrogen receptor (ER)alpha, ER beta, progesterone receptor, chemokine (C-X-C motif) receptor 4 (CXCR4), phosphorylated Akt, and major vault protein/lung resistance protein] were immunohistochemically analyzed. The association of the expression of nuclear YB-1 and the molecular markers was examined in breast cancer cell lines using microarrays, quantitative real-time PCR, and Western blot analyses. Knockdown of YB-1 with siRNA significantly reduced EGFR, HER2, and ER alpha expression in ER alpha-positive, but not ER alpha-negative, breast cancer cell lines. Nuclear YB-1 expression was positively correlated with HER2 (P = 0.0153) and negatively correlated with ER alpha (P = 0.0122) and CXCR4 (P = 0.0166) in human breast cancer clinical specimens but was not correlated with EGFR expression. Nuclear YB-1 expression was an independent prognostic factor for overall (P = 0.0139) and progression-free (P = 0.0280) survival. In conclusion, nuclear YB-1 expression might be essential for the acquisition of malignant characteristics via HER2-Akt-dependent pathways in breast cancer patients. The nuclear localization of YB-1 could be an important therapeutic target against not only multidrug resistance but also tumor growth dependent on HER2 and ER alpha.
Collection C2: curated gene sets
      CGP: chemical and genetic perturbations
Source publication Pubmed 18316615   Authors: Fujii T,Kawahara A,Basaki Y,Hattori S,Nakashima K,Nakano K,Shirouzu K,Kohno K,Yanagawa T,Yamana H,Nishio K,Ono M,Kuwano M,Kage M
Exact source Table 1S
Related gene sets (show 1 additional gene sets from the source publication)

(show 37 gene sets from the same authors)
External links  
Filtered by similarity
Organism Homo sapiens
Contributed by Jessica Robertson (MSigDB Team)
Source platform HUMAN_SEQ_ACCESSION
Dataset references  
Download gene set format: grp | text | gmt | gmx | xml
Compute overlaps (show collections to investigate for overlap with this gene set)
Compendia expression profiles GTEx compendium
Human tissue compendium (Novartis)
Global Cancer Map (Broad Institute)
NCI-60 cell lines (National Cancer Institute)
Advanced query Further investigate these 43 genes
Gene families Categorize these 43 genes by gene family
Show members (show 43 members mapped to 43 genes)
Version history 3.0: First introduced

See MSigDB license terms here. Please note that certain gene sets have special access terms.