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Transcriptomic profiling between attached and detached SAS cells

ABSTRACT: Cancer cells acquire anchorage-independence to escape anoikis. This study aimed to evaluate the gene expression signature of SAS cells cultured at the standar plate and the low-attachment plate. Total RNAs were isolated from attached and detached SAS cells, and gene expression signatures were examined using gene expression microarray.

ORGANISM(S): Homo sapiens

PROVIDER: GSE212367 | GEO | 2023/01/01

REPOSITORIES: GEO

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RNA-Seq of ILC and IDC breast cancer cell lines in attached (2D) and suspension (ultra-low attachment) cultures

Project description:Invasive lobular carcinoma (ILC) is a histological subtype of breast cancer with distinct molecular and clinical features from the more common subtype invasive ductal carcinoma (IDC). ILC cells exhibit anchorage-independent growth in ultra-low attachment (ULA) suspension cultures, which is largely attributed to the loss of E-cadherin. In addition to anoikis resistance, herein we show that human ILC cell lines exhibit enhanced cell proliferation in ULA cultures as compared to IDC cells. Proteomic comparison of ILC and IDC cell lines identified induction of PI3K/Akt and p90-RSK pathways specifically in ULA culture in ILC cells. Further transcriptional profiling uncovered unique upregulation of the inhibitors of differentiation family transcription factors ID1 and ID3 in ILC ULA culture, the knockdown of which diminished the anchorage-independent growth of ILC cell lines through cell cycle arrest. We find that ID1 and ID3 expression is higher in human ILC tumors as compared to IDC, correlated with worse prognosis uniquely in patients with ILC and associated with upregulation of angiogenesis and matrisome-related genes. Altogether, our comprehensive study of anchorage independence in human ILC cell lines provides mechanistic insights and clinical implications for metastatic dissemination of ILC and implicates ID1 and ID3 as novel drivers and therapeutic targets for lobular breast cancer.

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Human tongue squamous cell carcinoma cell line SAS-Control vs. SAS-LYRIC knockdown stable clones global gene profiling

Project description:Transcriptional profiling of SAS cells transfected with pLKO.1-LYRIC shRNA-B expression vector (desinaged as B) and control SAS cells (transfected with pLKO.1 vector, designated as CTL). Goal was to determine the effects of LYRIC knockdown on global SAS cells gene expression. Two-condition experiment, SAS cells transfected with pLKO.1-LYRIC shRNA-B expression vector (desinaged as B) v.s. control SAS cells (transfected with pLKO.1 vector, designated as CTL). Biological replicates: 4 control replicates, 4 transfected replicates.

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Gene expression in attached vs. released collagen matrices populated with human foreskin fibroblasts

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Gene expression of attached and suspended Bim-/- Bmf-/- murine kidney epithelial cells

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