Macropinosome Ph
Macropinosome Ph - Related Videos
11:01
Automated Imaging and Analysis for the Quantification of Fluorescently Labeled Macropinosomes
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Cited by 8 •
2021
Automated assays using multi-well microplates are advantageous approaches for identifying pathway regulators by allowing the assessment of a multitude of conditions in a single experiment. Here, we have adapted the well-established macropinosome imaging and quantification protocol to a 96-well microplate format and provide a comprehensive outline for automation using a multi-mode plate reader.
07:31
Measuring the pH, Redox Chemistries, and Degradative Capacity of Macropinosomes using Dual-Fluorophore Ratiometric Microscopy
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Cited by 1 •
2021
We describe protocols for measuring pH, oxidative events, and protein digestion in individual macropinosomes in live cells. An emphasis is placed on dual-fluorophore ratiometric microscopy and the advantages it offers over population-based techniques.
06:46
Culture of Macrophage Colony-stimulating Factor Differentiated Human Monocyte-derived Macrophages
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Cited by 58 •
2016
A protocol is presented for cell culture of macrophage colony-stimulating factor (M-CSF) differentiated human monocyte-derived macrophages. The protocol utilizes cryopreservation of monocytes coupled with their bulk differentiation into macrophages. Then harvested macrophages can then be seeded into culture wells at required cell densities for carrying out experiments.
FAQs
Vacuolar ATPases acidify the compartment by pumping protons across its membrane. This proton movement lowers the internal pH after macropinosome formation and establishes a chemical environment that can change as the vesicle matures. Because acidity depends on this active transport process, altered proton-pumping activity would be expected to influence downstream antigen processing and microbial persistence.
Acidity is not necessarily fixed after a macropinosome forms. Maturation changes the compartment and can bring it into interaction with endosomal pathways, which influence its chemical environment. These transitions help explain why material internalized at different stages may experience different conditions, affecting how cells process antigens and how microbes respond after entering host cells.
The pH inside a macropinosome helps determine the chemical conditions surrounding internalized antigenic material. As acidity changes during maturation, it can influence how that material is processed before presentation. Measuring this property therefore connects vesicle biology with immune-cell function, helping researchers examine how uptake compartments contribute to the preparation of antigens for immune recognition.
After uptake, infectious microbes encounter the changing chemical environment created by macropinosome acidification and maturation. Some may exploit that environment, while others may resist it. Studying pH in these compartments can therefore distinguish effects associated with host-vesicle progression from microbial survival strategies, providing context for understanding how infection persists within internalized cellular material.
Macropinosome pH measurements can indicate how effectively vesicles acidify and how their chemical environment changes during maturation. Interpreted alongside antigen processing or microbial behavior, the measurements can link compartment conditions to functional outcomes. This makes acidity a useful readout for investigating vesicle maturation, immune-cell activity, and pathogen survival after uptake.
Manipulating macropinosome acidity can test whether pH contributes directly to an observed cellular or infectious outcome. Comparing conditions with different levels of acidity may clarify whether antigen processing, vesicle maturation, or microbial persistence depends on the compartment’s chemical environment. Such experiments help separate associations between pH and function from mechanisms that drive those outcomes.
Macropinosome pH provides a shared point of analysis for host-cell trafficking and microbial fate. Vesicle acidification and endosomal interactions describe how the host compartment changes, while microbial exploitation or resistance describes how an infectious agent responds. Examining both sides can clarify relationships among uptake, maturation, pathogen survival, and immune-cell handling of internalized material.