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ScRNAseq of MMTV-Neu lung cancer cells in early and late stage

ABSTRACT: Cancer cells can disseminate from early-evolved primary lesions. It is thought that a state of early disseminated cancer cell (early DCC) dormancy would precede genetic maturation of DCCs and metastasis initiation. Here we reveal at single cell resolution a previously unrecognized role of mesenchymal- and pluripotency-like programs in coordinating early cancer cell spread and a long-lived dormancy program in early DCCs. We identify in early lesions and early DCCs, the transcription factor ZFP281 as an inducer of mesenchymal- and primed pluripotency-like programs, which is absent in advanced primary tumors and overt metastasis. ZFP281 not only controls the early spread of cancer cells but also locks early DCCs in a prolonged dormancy state by preventing the acquisition of an epithelial-like proliferative program. Thus, ZFP281-driven dormancy of early DCCs may be a rate-limiting step in metastatic progression functioning as a first barrier that DCCs must overcome to then undergo genetic maturation. This data set aims to characterize MMTV-Neu early and late lung disseminated cancer cells (DCCs).

ORGANISM(S): Mus musculus

PROVIDER: GSE165459 | GEO | 2021/01/26

REPOSITORIES: GEO

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RNA sequencing of MMTV-Neu early lesion (EL) and primary tumor (PT) spheres

Project description:Cancer cells can disseminate from early-evolved primary lesions. It is thought that a state of early disseminated cancer cell (early DCC) dormancy would precede genetic maturation of DCCs and metastasis initiation. Here we reveal at single cell resolution a previously unrecognized role of mesenchymal- and pluripotency-like programs in coordinating early cancer cell spread and a long-lived dormancy program in early DCCs. We identify in early lesions and early DCCs, the transcription factor ZFP281 as an inducer of mesenchymal- and primed pluripotency-like programs, which is absent in advanced primary tumors and overt metastasis. ZFP281 not only controls the early spread of cancer cells but also locks early DCCs in a prolonged dormancy state by preventing the acquisition of an epithelial-like proliferative program. Thus, ZFP281-driven dormancy of early DCCs may be a rate-limiting step in metastatic progression functioning as a first barrier that DCCs must overcome to then undergo genetic maturation.

2021-01-26 | GSE165431 | GEO

ZFP281 ChIP-sequencing of MMTV-Neu early lesion (EL) and primary tumor (PT) spheres

2021-01-26 | GSE165444 | GEO

scRNAseq of MMTV-Neu primary site and lung cancer cells in early and late stage

2021-01-26 | GSE165456 | GEO

Microfluidic enrichment, isolation and characterization of disseminated melanoma cells from lymph node samples

Project description:For the first time in melanoma, novel therapies have recently shown efficacy in the adjuvant therapy setting, which makes companion diagnostics to guide treatment decisions a desideratum. Early spread of disseminated cancer cells (DCC) to sentinel lymph nodes (SLN) is indicative of poor prognosis in melanoma and early DCCs could therefore provide important information about the malignant seed. Here, we present a strategy for enrichment of DCCs from SLN suspensions using a microfluidic device (ParsortixTM, Angle plc). This approach enables the detection and isolation of viable DCCs, followed by molecular analysis and identification of genetic changes. By optimizing the workflow, the established protocol allows a high recovery of DCC from melanoma patient-derived LN suspensions with harvest rates above 60%. We then assessed the integrity of the transcriptome and genome of individual, isolated DCCs. In LNs of melanoma patients, we detected the expression of melanoma-associated transcripts including MLANA (encoding for MelanA protein), analysed the BRAF and NRAS mutational status and confirmed the malignant origin of isolated melanoma DCCs by comparative genomic hybridization. We demonstrate the feasibility of epitope-independent isolation of LN DCCs using ParsortixTM for subsequent molecular characterization of isolated single DCCs with ample application fields including the use for companion diagnostics or subsequent cellular studies in personalized medicine.

2018-08-14 | GSE118478 | GEO

The pluripotency factor Zfp281 coordinates transcriptional and epigenetic control of epiblast maturation [RNA-seq]

Project description:The early development of mouse embryos involves a tightly regulated series of lineage specification events. Following implantation, these events include maturation of the pluripotent epiblast and simultaneous establishment of the embryonic axes. Here we report that Zfp281, a transcription factor shown to be required for transitioning cells in culture from naïve to primed states of pluripotency, is essential for mouse embryonic development by regulating epiblast maturation. Transcriptomic analyses of Zfp281 mutant embryos revealed a failure in activating Nodal signaling in the epiblast leading to failure in establishing the anterior-posterior axis, and impaired epiblast maturation. Our study establishes Zfp281 as a critical factor that coordinates transcriptional and epigenetic control of pluripotent epiblast maturation.

2017-11-24 | GSE93043 | GEO

The pluripotency factor Zfp281 coordinates transcriptional and epigenetic control of epiblast maturation [ChIP-seq]

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Microarray correpsonding to the paper manuscript titled: Targeted expression profiling of single disseminated cancer cells isolated from bone marrow of prostate cancer patients

Project description:Bone is the most frequent site of metastasis in prostate cancer (PCa) and patients with bone metastases are deemed incurable. Targeting prostate cancer cells that disseminated to the bone marrow (BM) prior to surgery and before metastatic outgrowth may therefore prevent lethal metastasis. This prompted us to directly analyse the transcriptome of disseminated cancer cells (DCC) isolated from non-metastatic (UICC stage M0) prostate cancer patients. We screened 105 BM samples of M0-stage prostate cancer patients and 18 BM samples of patients without malignancy for the presence of EpCAM+ single cells. In total we isolated 270 cells from both groups by micromanipulation and globally amplified their mRNA. We used targeted transcriptional profiling to unambiguously identify DCCs for subsequent in-depth analysis. Transcriptomes of all cells were examined for the expression of EPCAM, KRT8, KRT18, KRT19, KRT14, KRT6a, KRT5, KLK3 (PSA), MAGEA2, MAGEA4, PTPRC (CD45), CD33, CD34, CD19, GYPC, SCL4A1 (band 3), and HBA2. Using these transcripts we found it impossible to reliably identify true DCCs. We then applied combined genome and transcriptome analysis of single cells and found that EpCAM+ cells from controls expressed transcripts thought to be epithelial-specific, while true DCCs may express haematopoietic transcripts. These results point to an unexpected plasticity of epithelial cancer cells in bone marrow and question common transcriptional criteria to identify DCCs. Array-CGH was used to analyze EpCAM-positive single cells isolated from bone marrow of M0-stage prostate cancer patients, and individuals without cancer. The purpose was to demonstrate that cells with genomic aberrations are true tumour cells.

2014-10-20 | E-GEOD-59631 | biostudies-arrayexpress

Microarray correpsonding to the paper manuscript titled: Targeted expression profiling of single disseminated cancer cells isolated from bone marrow of prostate cancer patients

2014-10-20 | GSE59631 | GEO

Co-culture of human prostate cancer cells and mouse osteoblasts as a model for tumor dormancy in bone metastasis

Project description:Prostate cancer (PCa) cells, when disseminated to the bone, may stay quiescent or dormant for years before proliferation into overt metastases. Previous studies suggest that osteoblasts, the bone forming cells, may be responsible for induction of dormancy of bone-disseminated prostate cancer cells.

2023-10-23 | GSE210751 | GEO

Stromal Changes in The Aged Lung Induce an Emergence From Melanoma Dormancy

Project description:Disseminated cancer cells (DCCs) that escape the primary site can seed in distal tissues, but may take several years, or even decades to grow out into overt metastases, a phenomenon termed tumor dormancy. Despite its importance in metastasis and residual disease, few studies have been able to successfully model or characterize dormancy within melanoma. Here, we show that age-related changes in the lung microenvironment facilitate a permissive niche for efficient outgrowth of disseminated dormant tumor cells, in contrast to the aged skin, where age-related changes suppress melanoma growth but drive dissemination. A model of melanoma progression that addresses these microenvironmental complexities is the phenotype switching model, which argues that melanoma cells switch between a proliferative cell state and a slower-cycling, invasive state1-3. We have previously shown that dermal fibroblasts are key orchestrators of promoting phenotype switching in primary melanoma tumors via changes in the secretion of soluble factors during aging4-8. Our new data identifies Wnt5A as a master regulator of activating melanoma DCC dormancy within the lung, which initially enables efficient dissemination and seeding of melanoma cells in metastatic niches. Age-induced reprogramming of lung fibroblasts increases their secretion of the soluble Wnt antagonist sFRP1, which inhibits Wnt5A, enabling efficient metastatic outgrowth. Further, we have identified the tyrosine kinase receptors AXL and MER as promoting a dormancy-toreactivation axis respectively. Overall, we find that age-induced changes in distal metastatic microenvironments promotes efficient reactivation of dormant melanoma cells in the lung.

2022-03-03 | MSV000088977 | MassIVE

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