Project description:The winged helix transcription factor Foxl1 is a marker for progenitor cells and their descendants in the mouse liver in vivo. Here, we purify progenitor cells from Foxl1-Cre; RosaYFP mice and evaluate their proliferative and differentiation potential in vitro. Treatment of Foxl1-Cre; RosaYFP mice with 3,5-diethoxycarbonyl-1,4-dihydrocollidine diet led to an increase of the percentage of YFP-labeled Foxl1+ cells. Clonogenic assays demonstrated that up to 3.6% of Foxl1+ cells had proliferative potential. Foxl1+ cells differentiated into cholangiocytes and into hepatocytes in vitro, depending on the culture condition employed. Microarray analyses indicated that Foxl1+ cells express stem cell markers such as Prom1 as well as differentiation markers such as Ck19 and Hnf4a. Thus, the Foxl1-Cre; RosaYFP model allows for easy isolation of adult hepatic progenitor cells that can be expanded and differentiated in culture. Refer to individual Series. This SuperSeries is composed of the following subset Series: GSE28890: Foxl1-Cre-marked Adult Hepatic Progenitors Have Clonogenic and Bi-Lineage Differentiation Potential - Time Course GSE28891: Foxl1-Cre-marked Adult Hepatic Progenitors Have Clonogenic and Bi-Lineage Differentiation Potential - Differentiated vs Primary
Project description:The winged helix transcription factor Foxl1 is a marker for progenitor cells and their descendants in the mouse liver in vivo. Here, we purify progenitor cells from Foxl1-Cre; RosaYFP mice and evaluate their proliferative and differentiation potential in vitro. Treatment of Foxl1-Cre; RosaYFP mice with 3,5-diethoxycarbonyl-1,4-dihydrocollidine diet led to an increase of the percentage of YFP-labeled Foxl1+ cells. Clonogenic assays demonstrated that up to 3.6% of Foxl1+ cells had proliferative potential. Foxl1+ cells differentiated into cholangiocytes and into hepatocytes in vitro, depending on the culture condition employed. Microarray analyses indicated that Foxl1+ cells express stem cell markers such as Prom1 as well as differentiation markers such as Ck19 and Hnf4a. Thus, the Foxl1-Cre; RosaYFP model allows for easy isolation of adult hepatic progenitor cells that can be expanded and differentiated in culture. In vitro Differentiated cells were compared to Primary cells
Project description:Leptin receptor (LepR)-positive cells are key components of the bone marrow hematopoietic microenvironment, and highly enrich skeletal stem and progenitor cells that maintain homeostasis of the adult skeleton. However, the heterogeneity and lineage hierarchy within this population has been elusive. Using genetic lineage tracing and single-cell RNA sequencing, we found that Lepr-Cre labels most bone marrow stromal cells and osteogenic lineage cells in adult long bones. Integrated analysis of Lepr-Cre-traced cells under homeostatic and stress conditions revealed dynamic changes of the adipogenic, osteogenic, and periosteal lineages. Importantly, we discovered a Notch3+ bone marrow sub-population that is slow-cycling and closely associated with the vasculatures, as well as key transcriptional networks promoting osteo-chondrogenic differentiation. We also identified a Sca-1+ periosteal sub-population with high clonogenic activity but limited osteo-chondrogenic potential. Together, we mapped the transcriptomic landscape of adult LepR+ stem and progenitor cells and uncovered cellular and molecular mechanisms underlying their maintenance and lineage specification.
Project description:We found that hepatic injury induced by PTEN loss establishes a selection pressure for tumorinitiating cells (TICs) to proliferate and form mixed lineage tumors. The Pten null mice demonstrate escalating levels of hepatic injury prior to proliferation of hepatic progenitors. Attenuation of hepatic injury by deleting Akt2 reduces progenitor cell proliferation and delays tumor development. Treatment of double mutant mice with 3,5-dietoxycarbonyl-1,4 dihydrocollidine (DDC) shows that the primary effect of AKT2 loss is attenuation of hepatic injury and not inhibition of progenitor cell proliferation in response to injury. Pten/Akt2 double mutant (PtenloxP/loxP; Akt2-/-; Alb-Cre+) (Dm) were generated by crossing the PtenloxP/loxP; Alb-Cre+ (Pm) with the Akt2-/- mice [19]. Control animals are PtenloxP/loxP; Albumin (Alb)-Cre-.
Project description:The winged helix transcription factor Foxl1 is a marker for progenitor cells and their descendants in the mouse liver in vivo. Here, we purify progenitor cells from Foxl1-Cre; RosaYFP mice and evaluate their proliferative and differentiation potential in vitro. Treatment of Foxl1-Cre; RosaYFP mice with 3,5-diethoxycarbonyl-1,4-dihydrocollidine diet led to an increase of the percentage of YFP-labeled Foxl1+ cells. Clonogenic assays demonstrated that up to 3.6% of Foxl1+ cells had proliferative potential. Foxl1+ cells differentiated into cholangiocytes and into hepatocytes in vitro, depending on the culture condition employed. Microarray analyses indicated that Foxl1+ cells express stem cell markers such as Prom1 as well as differentiation markers such as Ck19 and Hnf4a. Thus, the Foxl1-Cre; RosaYFP model allows for easy isolation of adult hepatic progenitor cells that can be expanded and differentiated in culture.
Project description:The winged helix transcription factor Foxl1 is a marker for progenitor cells and their descendants in the mouse liver in vivo. Here, we purify progenitor cells from Foxl1-Cre; RosaYFP mice and evaluate their proliferative and differentiation potential in vitro. Treatment of Foxl1-Cre; RosaYFP mice with 3,5-diethoxycarbonyl-1,4-dihydrocollidine diet led to an increase of the percentage of YFP-labeled Foxl1+ cells. Clonogenic assays demonstrated that up to 3.6% of Foxl1+ cells had proliferative potential. Foxl1+ cells differentiated into cholangiocytes and into hepatocytes in vitro, depending on the culture condition employed. Microarray analyses indicated that Foxl1+ cells express stem cell markers such as Prom1 as well as differentiation markers such as Ck19 and Hnf4a. Thus, the Foxl1-Cre; RosaYFP model allows for easy isolation of adult hepatic progenitor cells that can be expanded and differentiated in culture.
Project description:The winged helix transcription factor Foxl1 is a marker for progenitor cells and their descendants in the mouse liver in vivo. Here, we purify progenitor cells from Foxl1-Cre; RosaYFP mice and evaluate their proliferative and differentiation potential in vitro. Treatment of Foxl1-Cre; RosaYFP mice with 3,5-diethoxycarbonyl-1,4-dihydrocollidine diet led to an increase of the percentage of YFP-labeled Foxl1+ cells. Clonogenic assays demonstrated that up to 3.6% of Foxl1+ cells had proliferative potential. Foxl1+ cells differentiated into cholangiocytes and into hepatocytes in vitro, depending on the culture condition employed. Microarray analyses indicated that Foxl1+ cells express stem cell markers such as Prom1 as well as differentiation markers such as Ck19 and Hnf4a. Thus, the Foxl1-Cre; RosaYFP model allows for easy isolation of adult hepatic progenitor cells that can be expanded and differentiated in culture. This SuperSeries is composed of the SubSeries listed below.