G Cells
G Cells - Related Videos
08:38
Phospho Flow Cytometry with Fluorescent Cell Barcoding for Single Cell Signaling Analysis and Biomarker Discovery
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Cited by 29 •
2018
Here, a protocol for medium- to high-throughput analysis of protein phosphorylation events at the cellular level is presented. Phospho flow cytometry is a powerful approach to characterize signaling aberrations, identify and validate biomarkers, and assess pharmacodynamics.
22:06
Derivation of Hematopoietic Stem Cells from Murine Embryonic Stem Cells
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Cited by 7 •
2007
This protocol details the derivation of transplantable hematopoietic stem cells from mouse embryonic stem cells (ESC) and their subsequent injection into lethally irradiated recipient mice. Briefly, ESC are differentiated as embryoid bodies, which are then infected with retroviral HoxB4 and co-cultured with OP9 stromal cells and hematopoietic cytokines.
10:04
Tractable In Vivo Reprogramming of Tumor Cells to Type 1 Conventional Dendritic Cell-like Cells
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2025
This protocol describes the in vivo reprogramming of mouse cancer cells into type 1 dendritic-like cells within the tumor microenvironment through enforced expression of the transcription factors PU.1, IRF8, and BATF3.
05:26
Microvascular and Macrovascular Endothelial Cell Isolation and Purification from Lung-Derived Samples
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Cited by 3 •
2023
Although challenging, the isolation of pulmonary endothelial cells is essential for studies on lung inflammation. The present protocol describes a procedure for the high-yield, high-purity isolation of macrovascular and microvascular endothelial cells.
07:26
Isolation of Functional Cardiac Immune Cells
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Cited by 9 •
2011
This method for isolating functional immune cells from the heart provides an alternative to the conventional methods of collagenase digestion, which causes unwanted immune cell activation, resulting in a decreased responsiveness of these cells. Our method of isolation yields functional cardiac immune cells by avoiding problems associated with enzymatic digestion.
FAQs
Gastrin release reflects several coordinated inputs rather than a single trigger. Luminal peptides and amino acids stimulate secretion after food enters the stomach, while gastric distension provides a mechanical signal. Vagal stimulation also promotes release through gastrin-releasing peptide. Together, these inputs connect meal-related chemical, physical, and neural information with increased digestive activity.
Rising gastric acidity limits further gastrin secretion through an indirect pathway involving somatostatin. In this arrangement, acidity does not simply act as a direct switch on the G cell; it engages inhibitory control that restrains hormone release. This feedback helps prevent continued stimulation of gastric acid secretion as the stomach becomes increasingly acidic.
Gastrin-releasing peptide provides a neural route through which vagal stimulation can influence G-cell secretion. Its importance is that G-cell activity responds not only to substances present in the lumen or physical distension, but also to nervous-system signals. This connection helps explain how gastrointestinal regulation coordinates meal-related activity with neural control.
Acid-suppressing drugs can modify the feedback relationship between gastric acidity and gastrin release. When acidity is altered, the acidity-linked inhibitory pathway involving somatostatin may also change, affecting control of gastrin secretion. This mechanism gives pharmacologists a way to interpret how therapies aimed at acid-related disorders influence hormonal regulation within the stomach.
G cells provide a framework for understanding peptic ulcer disease because gastrin coordinates gastric acid secretion and digestive activity. Pharmacologic changes in acid production can therefore be considered alongside the hormonal feedback that regulates gastrin. Studying this relationship helps connect treatment effects on acidity with broader changes in gastrointestinal signaling rather than viewing acid secretion in isolation.
Gastrin-secreting tumors are clinically relevant because they can disrupt the normal balance between stimulatory inputs and acidity-dependent feedback. Their association with G-cell biology gives pharmacologists a context for examining excessive gastrin signaling and its relationship to acid-related disorders. The same regulatory pathway used to understand normal control therefore supports interpretation of abnormal hormone production.