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SMAD2 linker phosphorylation impacts TGF beta 1-dependent gene expression in A549 cells

ABSTRACT: We investigated the impact of SMAD2 linker phosphorylation (pSMAD2L) on TGF-beta 1 signaling in A549 cells. Data has been published in the British Journal of Cancer under the title “SMAD2 linker phosphorylation influences overall survival, proliferation, TGFβ1-dependent gene expression, and pluripotency-related proteins in NSCLC”.

ORGANISM(S): Homo sapiens

PROVIDER: GSE277168 | GEO | 2025/05/05

REPOSITORIES: GEO

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SMAD2 linker phosphorylation impacts gene expression in A549 cells

Project description:We investigated the impact of SMAD2 linker phosphorylation (pSMAD2L) on gene expression in A549 cells. Data has been published in the British Journal of Cancer under the title “SMAD2 linker phosphorylation influences overall survival, proliferation, TGFβ1-dependent gene expression, and pluripotency-related proteins in NSCLC”.

2025-05-05 | GSE277166 | GEO

SMAD2 linker phosphorylation impacts gene expression in A549 cells

Project description:SMAD2 linker phosphorylation impacts gene expression in A549 cells

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SMAD2 linker phosphorylation impacts TGF beta 1-dependent gene expression in A549 cells

Project description:SMAD2 linker phosphorylation impacts TGF beta 1-dependent gene expression in A549 cells

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The phosphorylation of the Smad2/3 linker region by Nemo-like kinase regulates TGF-β signaling

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SMAD2 binding regions in triple negative breast cancer cell line, Hs578T

Project description:Inhibitors for cyclin-dependent kinase (CDK) 4 and CDK6 have been established as effective therapeutic options for hormone receptor (HR)-positive, HER2-negative advanced breast cancer. Although the CDK4/6 inhibitors mainly target the cyclin D-CDK4/6-retinoblastoma tumor suppressor protein (RB) axis, little is known about clinical impact of inhibiting phosphorylation of other CDK4/6 target proteins. Here, we have focused on other CDK4/6 targets, SMAD proteins. We showed that a CDK4/6 inhibitor Palbociclib and Activin-SMAD2 signaling cooperatively inhibited cell cycle progression of a luminal-type breast cancer cell line T47D. Mechanistically, Palbociclib enhanced SMAD2 binding to the genome through inhibiting linker phosphorylation of the SMAD2 protein by CDK4/6. Comparison of the SMAD2 ChIP-seq data of T47D with those of a triple-negative breast cancer cell line Hs578T indicated that Palbociclib augments different SMAD2-mediated program defined based on types of cells, and enhances SMAD2 binding to the target regions on the genome without affecting its binding pattern. Collectively, the CDK4/6 inhibitor facilitates the cytostatic effects of Activin-SMAD2, while it also enhances its tumor promoting effects depending on types of breast cancer.

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Smad2 and Smad3 have differential sensitivity in relaying TGF b signaling and inversely regulate early lineage specification

Project description:The transforming growth factor beta (TGFÎ²) related signaling is one of the most important signaling pathways regulating early developmental events. Smad2 and Smad3 are structurally similar and it is mostly considered that they are equally important in mediating TGFÎ² signals. Here, we show that Smad3 is an insensitive TGFÎ² transducer as compared with Smad2. Smad3 preferentially localizes within the nucleus and is thus sequestered from membrane signaling. The ability of Smad3 in oligomerization with Smad4 upon agonist stimulation is also impaired given its unique linker region. Smad2 mediated TGFÎ² signaling plays a crucial role in epiblast development and patterning of three germ layers. However, signaling unrelated nuclear localized Smad3 is dispensable for TGFÎ² signaling-mediated epiblast specification, but important for early neural development, an event blocked by TGFÎ²/Smad2 signaling. Both Smad2 and Smad3 bind to the conserved Smads binding element (SBE), but they show nonoverlapped target gene binding specificity. We conclude that Smad2 and Smad3 possess differential sensitivities in relaying TGFÎ² signaling and have distinct roles in regulating early developmental events. GFP, GFP-Smad2 and GFP-Smad3 constitutively expressed Smad3-/- mouse ESCs were differentiated to day6 neuroepithelia and collected for Chip-Seq with an anti-GFP antibody.

2016-03-01 | E-GEOD-76557 | biostudies-arrayexpress

Smad2 and Smad3 have differential sensitivity in relaying TGF b signaling and inversely regulate early lineage specification

Project description:The transforming growth factor beta (TGFβ) related signaling is one of the most important signaling pathways regulating early developmental events. Smad2 and Smad3 are structurally similar and it is mostly considered that they are equally important in mediating TGFβ signals. Here, we show that Smad3 is an insensitive TGFβ transducer as compared with Smad2. Smad3 preferentially localizes within the nucleus and is thus sequestered from membrane signaling. The ability of Smad3 in oligomerization with Smad4 upon agonist stimulation is also impaired given its unique linker region. Smad2 mediated TGFβ signaling plays a crucial role in epiblast development and patterning of three germ layers. However, signaling unrelated nuclear localized Smad3 is dispensable for TGFβ signaling-mediated epiblast specification, but important for early neural development, an event blocked by TGFβ/Smad2 signaling. Both Smad2 and Smad3 bind to the conserved Smads binding element (SBE), but they show nonoverlapped target gene binding specificity. We conclude that Smad2 and Smad3 possess differential sensitivities in relaying TGFβ signaling and have distinct roles in regulating early developmental events.

2016-03-01 | GSE76557 | GEO

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SMAD2/3 interactome in human pluripotent stem cells

Project description:This experiment was designed to determine the interactome of SMAD2/3 in human pluripotent stem cells (hPSCs). hPSCs were cultured in standard pluripotency-promoting conditions, or induced to differentiate towards the definitive endoderm lineage for 36h. Endogenous SMAD2/3 was immunoprecipitated from nuclear extracts in these two conditions using a specific antibody. Non-immune IgG immunoprecipitations were performed as negative controls. Three biological replicates per conditions were analyzed by quantitative label-free mass spectrometry.

2018-01-04 | PXD005285 | Pride

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