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Gene expression profiling comparing myeloma cell line MM1.144 transduced with a scramble shRNA or an shRNA targeting the non-canonical WNT receptor ROR2

ABSTRACT: We examined the gene expression profiles resulting from the depletion of the non-canonical WNT receptor ROR2 in myeloma cells

ORGANISM(S): Homo sapiens

PROVIDER: GSE118040 | GEO | 2019/07/22

REPOSITORIES: GEO

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Gene expression profiling comparing myeloma cell line MM1.144 transduced with a scramble shRNA or an shRNA targeting the non-canonical WNT receptor ROR2

Project description:Gene expression profiling comparing myeloma cell line MM1.144 transduced with a scramble shRNA or an shRNA targeting the non-canonical WNT receptor ROR2

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Ror2-mediated non-canonical Wnt signaling regulates Cdc42 and cell proliferation during root development

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Non-canonical Wnt signaling via FZD5 and ROR2 contributes to the maintenance of the stemness of human mesenchymal stem cells

Project description:We previously showed that the combination of markers LNGFR+ and THY-1+ can be used selectively to isolate human mesenchymal stem cells (hMSCs) in bone marrow and several tissues. However, the molecular mechanisms regulating stemness of hMSCs remain to be elucidated. In this study, we found that Frizzled 5 (FZD5) and Receptor tyrosine kinase-like orphan receptor 2 (ROR2) were highly enriched in LNGFR+THY-1+ derived clones that retain a high potential for proliferation (rapidly expanding clones; RECs). WNT5A, the ligand of FZD5, causes FZD5 and ROR2 to co-localize and activates non-canonical Wnt pathway in RECs. Moreover, FZD5 knockdown attenuated proliferation and caused senescence. In contrast, FZD5 overexpression delayed senescence. These results indicate that intrinsic activation of non-canonical Wnt signaling via FZD5 and ROR2 modulates stemness and senescence of RECs. Thus, control of non-canonical Wnt signaling would enable us to regulate hMSC quality and to enhance the efficacy of cell-replacement therapy using hMSCs.

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Targets of ROR2 overexpression in MCF-7 cells revealed a differentially regulated module of non-canonical WNT signaling pathway

Project description:RNA-Seq profiling of estrogen-receptor-positive MCF-7 cell lines with different perturbations of non-canonical WNT signaling . The MCF-7 cells were either transfected with an empty vector (pcDNA) or with a ROR2 overexpression construct, in parallel with or without stimulation with recombinant WNT5A. The objective was to find expression-responsive targets of these perturbations as potential drivers of increased cell invasiveness.

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Cell fate and adhesion dynamics rely on Ror2-mediated alternative Wnt signaling during tumor progression

Project description:Cellular heterogeneity in breast cancer encompasses many features, yet an understanding of the coexistence and regulation of various tumor cell subpopulations remains a significant challenge in cancer biology. In the current study, we approached tumor cell heterogeneity from the perspective of Wnt pathway biology to address how different modes of Wnt signaling shape the behaviors of diverse cell populations within a heterogeneous tumor landscape. Using a syngeneic TP53 null mouse model of breast cancer, we identified distinctions in the topology of canonical Wnt b-catenin dependent signaling activity and noncanonical b-catenin independent Ror2-mediated Wnt signaling across subtypes and within tumor cell subpopulations in vivo. We further discovered an antagonistic role for Ror2 in regulating canonical Wnt/b-catenin activity in vivo, where lentiviral shRNA depletion of Ror2 expression augmented canonical Wnt/b-catenin signaling activity across multiple basal-like models. Depletion of Ror2 expression yielded distinct phenotypic outcomes and divergent alterations in gene expression programs among different tumors, despite all sharing basal-like features. Notably, we uncovered cell state plasticity and adhesion dynamics regulated by Ror2, where Ras Homology Family Member A (RhoA) and Rho-Associated Coiled-Coil Kinase 1 (ROCK1) activity downstream of Dishevelled-2 (Dvl2) were implicated. Collectively, these studies illustrate the integration and collaboration of Wnt pathways in basal-like breast cancer, where Ror2 provides a spatiotemporal function to regulate the balance of Wnt signaling and cellular heterogeneity during tumor progression.

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Gene transcript alterations exhibited in luminal and basal epithelial compartments with impaired Ror2 signaling

Project description:Microarray analyses revealed distinct gene expression alterations in the luminal and basal epithelial compartments in the absence of Ror2 with marked alterations observed in genes associated with actin filament-based processes and the actin cytoskeletal network. Given that Ror2 expression resides in both basal and luminal epithelial cells, we wanted to identify compartment-specific functions for Ror2 in coordinating development. Accordingly, luminal and basal epithelial cell populations from shLUC and shRor2 outgrowths were isolated by FACS separation on the basis of CD24 and CD29 surface marker expression and gene expression analysis was subsequently performed using Agilent microarrays.

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2017-01-01 | GSE76535 | GEO

Expression and role of the receptor tyrosine kinase-like orphan receptor2 (ROR2) in small cell lung cancer

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Ror2 modulates the canonical Wnt signaling in lung epithelial cells through cooperation with Fzd2.

Project description:BackgroundWnt signaling is mediated through 1) the beta-catenin dependent canonical pathway and, 2) the beta-catenin independent pathways. Multiple receptors, including Fzds, Lrps, Ror2 and Ryk, are involved in Wnt signaling. Ror2 is a single-span transmembrane receptor-tyrosine kinase (RTK). The functions of Ror2 in mediating the non-canonical Wnt signaling have been well established. The role of Ror2 in canonical Wnt signaling is not fully understood.ResultsHere we report that Ror2 also positively modulates Wnt3a-activated canonical signaling in a lung carcinoma, H441 cell line. This activity of Ror2 is dependent on cooperative interactions with Fzd2 but not Fzd7. In addition, Ror2-mediated enhancement of canonical signaling requires the extracellular CRD, but not the intracellular PRD domain of Ror2. We further provide evidence that the positive effect of Ror2 on canonical Wnt signaling is inhibited by Dkk1 and Krm1 suggesting that Ror2 enhances an Lrp-dependent STF response.ConclusionThe current study demonstrates the function of Ror2 in modulating canonical Wnt signaling. These findings support a functional scheme whereby regulation of Wnt signaling is achieved by cooperative functions of multiple mediators.

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Ror2-mediated non-canonical Wnt signaling regulates Cdc42 and cell proliferation during root development

Project description:Ror2-mediated non-canonical Wnt signaling regulates Cdc42 and cell proliferation during root development

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