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Sox11 induces cell aggregation and growth suppression in early progenitor B-cells

ABSTRACT: The non-malignant, IL-3 dependent pro-B cell line Ba/F3 has previously been used for assessing transformation capability of oncogenes. We investigated functional and transcriptional changes in Ba/F3 cells upon Sox11 induction and find that the transcription factor Sox11 in this cellular background did not act as an oncogene.

ORGANISM(S): Mus musculus

PROVIDER: GSE108419 | GEO | 2019/02/27

REPOSITORIES: GEO

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SOX11-positive and SOX11-knockdown xenograft derived tumor Gene Expression Profilings

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SOX11-positive and SOX11-knockdown xenograft derived tumor Gene Expression Profilings

Project description:The neural transcription factor SOX11 is overexpressed in aggressive lymphoid neoplasms mainly in mantle cell lymphoma (MCL). We have recently demonstrated SOX11 tumorigenic potential in vivo by showing a significant reduction on tumor growth of SOX11-knockdown MCL cells in xenograft experiments, confirming the clinical observations that SOX11 may play an important role in the aggressive behavior of MCL (Vegliante et al., 2013). However, the specific mechanisms regulated by SOX11 that promote the oncogenic and rapid tumor growth of aggressive MCL still remain to be elucidated. To further characterize the potential oncogenic mechanisms regulated by SOX11 in MCL, we have analyzed the GEP derived from the xenograft SOX11-positive and knockdown xenograft derived tumors. Differential gene expression between SOX11-positive Z138 and SOX11-negative Z138 MCL cell lines xenotransplanted in SCID mices derived tumors. To determine the transcriptional programs regulated by SOX11 we first generated a MCL cellular model with reduced SOX11 protein levels by infecting MCL cell lines with lentiviral particles carrying shRNA plasmids specifically targeting SOX11 (shSOX11.1 and shSOX11.3). Next, CB17-severe combined immunodeficient (CB17-SCID) mice (Charles River Laboratory, Wilmington, MA) were subcutaneously inoculated into their lower dorsum with Z138 shSOX11.1, shSOX11.3, shControl in Matrigel basement membrane matrix and compared the GEP of SOX11-positive and SOX11-negative MCL xenotransplant derived tumors using the Affymetrix U133+2.0 microarrays.

2014-11-04 | E-GEOD-52892 | biostudies-arrayexpress

Sox11 induces cell aggregation and growth suppression in early progenitor B-cells

Project description:Sox11 induces cell aggregation and growth suppression in early progenitor B-cells

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Project description:The neural transcription factor SOX11 is overexpressed in aggressive lymphoid neoplasms mainly in mantle cell lymphoma (MCL), but its functional role in malignant B-cells is unknown. To identify target genes transcriptionally regulated by SOX11 in malignant lymphoid cells, we have used Gene Expression Profiling (GEP) after SOX11 silencing in MCL cell lines. Differential gene expression between Z138-shSOX11 and Z138-shControl MCL cell lines. To determine the transcriptional programs regulated by SOX11, we first generated an MCL cellular model with reduced SOX11 protein levels by infecting MCL cell lines with lentiviral particles carrying shRNA plasmids specifically targeting SOX11 (shSOX11.1 and shSOX11.3). Next, we compared the GEP of shSOX11 and shControl Z138 stable transduced clones using the Affymetrix U133+2.0 microarrays.

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Project description:In this study, we demonstrated that baseline SOX11 expression was significantly higher in dermal fibroblasts (DFs) isolated from patients with SSc than that in controls, and increased in response to TGF-b. We then showed that SOX11 is involved in the expression of periostin and some periostin-dependent fibrotic factors identified in lung fibroblasts previously. Moreover, we identified some fibrotic factors induced by SOX11 in DNA microarrays combining TGF-b induction and SOX11 knockdown. Finally, we showed that genetic deletion of SOX11 in Postn positive fibroblast cells protects from bleomycin (BLM)-induced skin fibrosis. Altogether, our data indicate that SOX11 and periostin forms a vicious circle and that TGF-b activates this circle specifically in SSc dermal fibroblasts.

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