Background: Ion channels are key determinants for the function of excitable cells but little is known about their role and involvement during cardiac development. Earlier work identified Ca2+-activated potassium channels of small and intermediate conductance (SKCas) as important regulators of neural stem cell fate. Here, we have investigated their impact on the differentiation of pluripotent cells towards the cardiac lineage. Methods and Results: We have applied the SKCa-activator EBIO on embryonic stem cells and identified this particular ion channel family as a new critical target involved in the generation of cardiac pacemaker-like cells: SKCa-activation led to rapid remodeling of the actin cytoskeleton, inhibition of proliferation, induction of differentiation and diminished teratoma formation. Time-restricted SKCa-activation induced cardiac mesoderm and commitment to the cardiac lineage as shown by gene regulation, protein and functional electrophysiological studies. In addition, the differentiation into cardiomyocytes was modulated in a qualitative fashion, resulting in a strong enrichment of pacemaker-like cells. This was accompanied by induction of the sino-atrial gene program and in parallel by a loss of the chamber-specific myocardium. In addition, SKCa activity induced activation of the Ras-Mek-Erk signaling cascade, a signaling pathway involved in the EBIO-induced effects.
Modulation of calcium-activated potassium channels induces cardiogenesis of pluripotent stem cells and enrichment of pacemaker-like cells.
Specimen part, Cell line
View SamplesSingle-cell analysis of KPC pancreatic tumor cells Overall design: Evaluate the single-cell transcriptomic landscape in 3 KPf/fC tumors
A Multiscale Map of the Stem Cell State in Pancreatic Adenocarcinoma.
Specimen part, Cell line, Subject
View SamplesmPDAC tumors of KPC mice Overall design: medium and large size tumors
A Multiscale Map of the Stem Cell State in Pancreatic Adenocarcinoma.
Specimen part, Cell line, Subject
View SamplesFoxp1 is expressed throughout B cell development, but the physiological functions in mature B lymphocytes are unknown. We therefore evaluated differential gene expression in Foxp1-deficient B cells, with or
Foxp1 controls mature B cell survival and the development of follicular and B-1 B cells.
Specimen part
View SamplesT cell lymphoma
PD-1 is a haploinsufficient suppressor of T cell lymphomagenesis.
Sex, Specimen part, Cell line
View SamplesTissues of Arabidopsis plants overexpressing artificial microRNAs were compared to wild_type and respective target gene mutants (duplicate arrays)
Highly specific gene silencing by artificial microRNAs in Arabidopsis.
Specimen part
View SamplesUmkirch-1/Umkirch-3 hybrid plants and their parents were grown at 23SD and then shifted to 16SD for five days. 10 plants were pooled in each of three sample replicates.
Autoimmune response as a mechanism for a Dobzhansky-Muller-type incompatibility syndrome in plants.
Specimen part
View SamplesGene expression profile was analyzed after knockdown of PAEP in lung cancer cell lines 2106T and H1975 as well as in skin cancer cell line MeWo.
Glycodelin: A New Biomarker with Immunomodulatory Functions in Non-Small Cell Lung Cancer.
Specimen part, Cell line, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Pathways regulating the expression of the immunomodulatory protein glycodelin in non‑small cell lung cancer.
Sex, Age, Specimen part, Cell line, Treatment
View SamplesGene expression profiling of NSCLC tumors with distinct PAEP expression suggested several pathways, which might be involved in the regulation of PAEP/glycodelin expression.
Pathways regulating the expression of the immunomodulatory protein glycodelin in non‑small cell lung cancer.
Sex, Age, Specimen part
View Samples