Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

HSC-3 cells (control) vs. HSC-3-5 cells

ABSTRACT: This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

ORGANISM(S): Homo sapiens

SUBMITTER: Chuan-Fa Chang

PROVIDER: E-GEOD-39729 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Anterior gradient 2: a novel sensitive tumor marker for metastatic oral cancer.

Chen Yi-Ting YT Ho Chung-Liang CL Chen Po-Ku PK Chen Yuh-Ling YL Chang Chuan-Fa CF

Cancer letters 20130705 2

The prevention of oral squamous cell carcinoma metastasis to improve overall patient survival has provided the rationale for biomarker development. We used the Transwell invasion assay to isolate a highly metastatic subpopulation, HSC-3-5 cells, with almost the same genetic background as HSC-3 cells but a higher metastatic capacity accompanied by cytoskeletal rearrangements and mesenchymal transformation. HSC-3-5 cells also showed tumorigenic and metastatic characteristics in vivo. In addition, ...[more]

PMID: 23834814

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Project description:Cell motility and invasion initiate metastasis. However, only a subpopulation of cancer cells within a tumor will ultimately become invasive. Due to this stochastic and transient nature, in an experimental setting, migrating and invading cells need to be isolated from the general population in order to study the gene expression profiles linked to these processes. This report describes microarray analysis on RNA derived from migrated or invaded subpopulations of triple negative breast cancer cells in a Transwell set-up, at two different time points during motility and invasion, pre-determined as M-bM-^@M-^\earlyM-bM-^@M-^] and M-bM-^@M-^\lateM-bM-^@M-^] in real-time kinetic assessments. Invasion- and migration-related gene expression signatures were generated through comparison with non-invasive cells, remaining at the upper side of the Transwell membranes. Late-phase signatures of both invasion and migration indicated poor prognosis in a series of breast cancer data sets. Furthermore, evaluation of the genes constituting the prognostic invasion-related gene signature revealed KruM-LM-^Hppel-like factor 9 (KLF9) as a putative suppressor of invasive growth in breast cancer. Next to loss in invasive vs non-invasive cell lines, KLF9 also showed significantly lower expression levels in the M-bM-^@M-^\earlyM-bM-^@M-^] invasive cell population, in several public expression data sets and in clinical breast cancer samples when compared to normal tissue. Overexpression of EGFP-KLF9 fusion protein significantly altered morphology and blocked invasion and growth of MDA-MB-231 cells in vitro. In addition, KLF9 expression correlated inversely with mitotic activity in clinical samples, indicating anti-proliferative effects. After selection of two time points (M-bM-^@M-^\earlyM-bM-^@M-^] and M-bM-^@M-^\lateM-bM-^@M-^]), RNA from invasive and migratory MDA-MB-231 cells was isolated from Transwell membranes and hybridized onto an Illumina HumanHT-12 v4 Expression beadchip. Gene expressions of migrated/invaded subpopulations vs non-motile cells were compared.

Project description:Bone marrow derived stromal cells (BMSCs) are a multipotent population that supports angiogenesis, wound healing, immunomodulation and plays an active role in the hematopoietic niche. On the other hand, they are also involved in the nurturing of bone marrow tumors and metastasis, showing a pro-tumorigenic behavior. BMSCs secrete a wide range of cytokines, growth factors and matrix proteins that are likely responsible for many of these effects. However, it is not clear whether this pro-tumorigenic behavior of BMSCs is induced by the tumor cells, neither in what extent the tumor cells affect the type and quantity of factors produced by BMSCs. To determine how tumor cells that arise from bone marrow affect the BMSCs, we selected three myeloid leukemia cell lines (TF-1, TF-1alpha and K562) and co-cultured them with BMSCs from healthy donors. We found that, under co-culture condition, the gene expression profiling of BMSCs revealed up-regulation of many pro-inflammatory signaling related genes, mainly IL-17 signaling-related genes. Moreover, IL-17 signaling-related cytokines CCL2 and IL8, were increased in co-culture supernatants. We conclude that BMSCs react to the presence of leukemia cells undergoing changes in the cytokine and chemokine secretion profile. Thus, BMSCs and leukemia cells both contribute to the creation of a competitive niche more favorable to leukemia stem cells. BMSCs from healthy donors were transwell co-cultured with three different myeloid leukemia cell lines: TF-1 (n=3), TF-1alpha (n=3) and K562 (n=3). A 1-um Transwell system (BDBiosciences, San Jose, CA USA) was used to maintain the cultured BMSC and leukemia cell populations separate from each other. As a control BMSCs were also transwell co-cultured under the same conditions with CD34+ cells (n=9) isolated from G-CSF-mobilized peripheral blood stem cells from healthy donors. An alternative co-culture method was used to analyze BMSCs and leukemia cells in direct contact: TF-1 (n=3), TF-alpha (n=3) and K562 (n=3). The two populations were cultured together in the same well without any membrane separation. BMSCs (n=18), TF-1 (n=3), TF-1alpha (n=3), K562 (n=3) and CD34+ (n=9) cells cultured alone (mono-cultures) were used as controls. Cells from both mono- and co-culture conditions were harvested at 4h, 10h, and 24h.

Dataset Information

HSC-3 cells (control) vs. HSC-3-5 cells

Publications

Anterior gradient 2: a novel sensitive tumor marker for metastatic oral cancer.

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