Beta-glucan
Beta-glucan - Related Videos
02:25
An Assay for Analyzing Test β-Glucan as an Immunotherapy Strategy against Brain Cancer Cells
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2025
This video demonstrates an in vitro assay utilizing β-glucans to activate microglial cells for the production of superoxide radicals, a reactive oxygen species. In brain cancer cells, the generated reactive oxidants actively suppress tumor cell proliferation and induce cell death.
01:25
Beta
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2024
Beta is a crucial metric in finance used to assess an investment's risk and expected return relative to the overall market. It is calculated as the slope of the line in a scatterplot that compares the returns of an individual stock to the returns of the market benchmark, typically represented by a broad market index. Beta quantifies how much a stock's price moves in response to market movements, providing insight into its volatility and systematic risk. A beta of one indicates that the stock's...
09:50
In situ Quantification of Pancreatic Beta-cell Mass in Mice
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Cited by 6 •
2010
The following protocol outlines the process of pancreatic dissection for virtual slice imaging, and the subsequent quantification of all GFP-tagged beta-cells in the entire pancreas.
06:34
A Tailored HPLC Purification Protocol That Yields High-purity Amyloid Beta 42 and Amyloid Beta 40 Peptides, Capable of Oligomer Formation
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Cited by 6 •
2017
Herein we report a tailored HPLC purification protocol that yields high-purity amyloid beta 42 (Aβ42) and amyloid beta 40 (Aβ40) peptides, capable of oligomer formation. Amyloid beta is a highly aggregation prone, hydrophobic peptide implicated in Alzheimer's disease. The amyloidogenic nature of the peptide makes its purification a challenge.
04:00
Evaluating Mutation Frequency in Bacteria Using the Beta-Glucosidase Assay
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2025
Source: Stefan, A., et al. The Multifaceted Benefits of Protein Co-expression in Escherichia coli. J. Vis. Exp. (96), (2015).This video demonstrates the evaluation of mutation frequency in bacteria using a beta-glucosidase assay. Bacterial cultures expressing a proofreading-deficient DNA polymerase are collected over successive generations. Replication errors caused by reduced proofreading may activate a suppressed beta-glucosidase gene. After centrifugation and permeabilization, a substrate is...
FAQs
Dectin-1 detects particular beta-glucan structures on immune cells and initiates signaling that activates macrophages, neutrophils, and dendritic cells. These cells can increase phagocytosis and produce inflammatory mediators, helping the host respond to fungal material. The receptor therefore links molecular recognition with coordinated innate defense and communication with adaptive immunity.
Immune effects depend on structural features rather than the name beta-glucan alone. Differences in branching, molecular organization, and biological source can alter how immune receptors recognize the polysaccharide and whether the resulting response stimulates or modulates inflammation. Comparing these features helps explain why beta-glucans from different fungi, yeasts, algae, or cereals may produce different biological outcomes.
Recognition by pattern-recognition receptors can activate inflammatory mediator production, but the magnitude and character of that response depend on the beta-glucan structure presented to immune cells. Some forms may stimulate inflammatory defenses, whereas others may modulate them. This distinction matters when interpreting beta-glucan effects in infection models or considering immune-modulating applications.
Macrophages, neutrophils, and dendritic cells are central because beta-glucan recognition can activate their innate defense functions. Macrophages and neutrophils contribute to phagocytic responses, while dendritic cells also help connect innate sensing with adaptive immune communication. Examining these cell types together provides a broader view than measuring inflammatory mediator production alone.
Researchers can use beta-glucan to examine how immune cells detect cell-wall-associated fungal or other biological structures and translate that recognition into defense. Studies may assess phagocytosis, inflammatory mediator production, or communication with adaptive immunity. Comparing structurally distinct beta-glucans can also clarify how pathogen-associated molecular features shape the host response.
In antifungal immunity studies, beta-glucan helps investigate the receptor-driven defenses that activate macrophages, neutrophils, and dendritic cells. Its ability to influence innate responses also supports research into vaccine adjuvant strategies, where immune activation may improve communication with adaptive defenses. These applications depend on selecting and interpreting beta-glucans according to their structural properties.