Reprogramming of mouse gall bladder cells into pancreatic beta cells
Ontology highlight
ABSTRACT:
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| ERR861327.fastq.gz | Fastqsanger.gz | |||
| ERR861328.fastq.gz | Fastqsanger.gz | |||
| ERR861329.fastq.gz | Fastqsanger.gz | |||
| ERR861330.fastq.gz | Fastqsanger.gz | |||
| ERR861331.fastq.gz | Fastqsanger.gz |
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Project description:Mouse gall bladder cells from MIP-GFP mice were expanded in vitro and transduced with adenoviral vectors expressing the transcription factors Neurog3, Pdx1 and MafA. Reprogrammed GFP+ cells were then FACS-sorted for RNA isolation.
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This model is described in the article:
A community-driven global reconstruction of human metabolism.
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This model is hosted on BioModels Database
and identified by: MODEL1310110042
.
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curated and annotated resource for published quantitative kinetic models
.
To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer
to CC0 Public Domain Dedication
for more information.
2005-01-01 | MODEL1310110042 | BioModels
Project description:We have successfully established organoid culture model for human and murine gall bladder (GB) epithelial cells allowing long-time culture of primary epithelial cells. This model was used to analyze factors influencing stemness and to study infection with Salmonella paratyphi and its toxin Cdtb.
2020-09-04 | GSE100656 | GEO
Project description:Gall-forming insects manipulate host plants through the proteins present in their saliva, which play essential roles in reprogramming plant cells. Understanding the salivary composition of these insects is crucial for revealing the mechanisms underlying gall induction and the interactions between herbivores and their host plants. In this study, we utilized an integrated transcriptomic and proteomic approach to explore the salivary proteome of the gall-inducing psyllid, Trioza camphorae.
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Project description:We have studied by pyrosequencing the microbiota present in the bile and gall bladder mucus of healthy sows.
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Project description:Understanding how plant tissue and organs may be transformed into novel structures by other organisms provides a unique opportunity to study the molecular processes that dictate facets of plant anatomy and morphology. Certain groups of wasps have evolved the ability to transform plant tissues into ornate structures called galls, which provide shelter and nutrition for their larvae. However, the exact mechanism for how gall wasps remodel the plant’s physical structure and metabolism is still largely unknown. At their core, galls alter the morphology and repurpose the function of plant tissue. One common trait that unites all galls is the distinct cellular reprogramming and tumor-like growth that is necessary to produce a gall. There are over 1,400 gall wasps from the family Cynipidae, resulting in a wide diversity of gall structures, shapes, and colors that have been described. Thus, discovering the core molecular determinants that dictate the radical transformation of plant cells will help reveal principles of how plant morphology and function can be rewired by external factors. Little molecular work has been done to elucidate the factors (i.e., genes, proteins, or small molecules) that may be involved in this dramatic repurposing and dedifferentiation of plant tissue. We plan to utilize modern -omics approaches to investigate and identify the molecular factors that underlie the initiation and development of plant galls.
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Project description:Pantoea agglomerans pv. betae (Pab) induces tumor-like galls in beet and gypsophila, a process mediated by the secretion of effector proteins via Pab's type III secretion system (T3SS). However, the molecular mechanisms underlying Pab-induced gall formation remain largely unexplored. This study delves into the cellular architecture and transcriptional profile of Pab-mediated galls, comparing host responses to wild-type Pab and a T3SS-inactive mutant, hrcC-. Morphological analysis using scanning electron microscopy and cross-sectional visualization of infected beet leaf tissues revealed that Pab-induced gall-like structures are linked to cell hyperplasia and tissue ruptures, contingent on T3SS activity. Comparative transcriptome analysis of wild-type Pab and hrcC- Pab-infected beet leaves at 12 and 48 hours unveiled significant transcriptional reprogramming, with nearly 2,000 differentially expressed genes as of 48 hours post inoculation. Enrichment analyses identified the upregulation of pathways related to signal transduction, defense, carbohydrate metabolism, and cell wall modulation in wild-type Pab-infected leaves compared to controls. Particularly notable was the significant upregulation of numerous genes associated with cell wall loosening by wild-type Pab, suggesting an initial rearrangement of cell wall architecture facilitating gall formation. Furthermore, transcriptome analysis demonstrated that wild-type Pab suppresses the expression of the betalain biosynthetic gene DOPA 4,5-DIOXYGENASE, leading to reduced betalain accumulation in infected tissues compared to the mutant strain. These findings offer fresh insights into the transcriptional and physiological manipulation of host tissue during the early stages of Pab-induced gall formation.
2024-12-16 | GSE269454 | GEO
Project description:Cell replacement is an emerging therapy for type 1 diabetes. Pluripotent stem cells have received a lot of attention as a potential source of transplantable β-cells, but their ability to form teratomas poses significant risks. Here, we evaluated the potential of primary mouse gall bladder epithelial cells (GBCs) as targets for ex vivo genetic reprogramming to the β-cell fate. Conditions for robust expansion and genetic transduction of primary GBCs by adenoviral vectors were developed. Using a GFP reporter for insulin, conditions for reprogramming were then optimized. Global expression analysis by RNA-sequencing was used to quantitatively compare reprogrammed GBCs (rGBCs) to true β-cells, revealing both similarities and differences. Adenoviral-mediated expression of NEUROG3, Pdx1, and MafA in GBCs resulted in robust induction of pancreatic endocrine genes, including Ins1, Ins2, Neurod1, Nkx2-2 and Isl1. Furthermore, expression of GBC-specific genes was repressed, including Sox17 and Hes1. Reprogramming was also enhanced by addition of retinoic acid and inhibition of Notch signaling. Importantly, rGBCs were able to engraft long term in vivo and remained insulin-positive for 15weeks. We conclude that GBCs are a viable source for autologous cell replacement in diabetes, but that complete reprogramming will require further manipulations.
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