Lysosomal Enzymes
Lysosomal Enzymes - Related Videos
10:16
SorLA and CLC:CLF-1-dependent Downregulation of CNTFRα as Demonstrated by Western Blotting, Inhibition of Lysosomal Enzymes, and Immunocytochemistry
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Cited by 1 •
2017
The present protocol describes how Western blotting and immunocytochemistry combined with inhibition of lysosomal enzymes can be used to demonstrate the downregulation of Ciliary Neurotrophic Factor Receptor-α (CNTFRα), which is conveyed by the interaction between Cytokine-like Factor-1 (CLF-1) and the endocytic receptor sorLA.
01:31
Lysosomes
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2023
Lysosomes are membrane-enclosed spherical sacs derived from the Golgi apparatus. The most important function of the lysosome is degrading macromolecules and biological polymers that are released during membrane trafficking events such as the secretory, endocytic, autophagic, and phagocytic pathways. The degradation is carried out by several hydrolytic enzymes active in an acidic environment of the lysosomal lumen. These acid hydrolases are involved in cellular processes such as cell signaling,...
01:31
Lysosomes
0 Views •
2023
Lysosomes are membrane-enclosed spherical sacs derived from the Golgi apparatus. The most important function of the lysosome is degrading macromolecules and biological polymers that are released during membrane trafficking events such as the secretory, endocytic, autophagic, and phagocytic pathways. The degradation is carried out by several hydrolytic enzymes active in an acidic environment of the lysosomal lumen. These acid hydrolases are involved in cellular processes such as cell signaling,...
05:30
Live-cell Imaging of Lysosomal Membrane Permeabilization During Necroptosis
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2025
This protocol describes a live-cell imaging method for monitoring lysosomal membrane permeabilization during necroptosis, utilizing fluorescent probes that detect changes in lysosomal membrane integrity and acidification.
01:22
Lysosomal Hydrolases
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2023
Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
FAQs
The acidic interior of a lysosome activates its hydrolases, allowing them to digest proteins, lipids, carbohydrates, and nucleic acids efficiently. This compartmentalization also limits enzyme activity in the cytosol, where uncontrolled digestion could damage cellular structures. Studying acidification therefore helps explain both normal lysosomal recycling and how impaired lysosomal function can disrupt cell quality control.
These pathways supply different types of material for lysosomal degradation. Endocytosis delivers material taken up from outside the cell, phagocytosis brings in larger particles such as engulfed microorganisms, and autophagy directs cellular components for recycling. Lysosomal enzymes then process the delivered contents, linking uptake and intracellular quality control to immune-cell function.
Defects at any of these stages can reduce the cell’s ability to digest material delivered to lysosomes. In phagocytes, that impairment may hinder destruction of engulfed microorganisms and contribute to immune dysfunction. Broader failures in lysosomal processing can also cause lysosomal storage diseases, because cellular material is not adequately broken down and recycled.
After macrophages engulf microorganisms, lysosomal enzymes help break down the material within the compartment receiving the phagocytic cargo. Their activity therefore contributes to pathogen clearance rather than merely routine cellular recycling. Comparing effective and impaired lysosomal function can help researchers investigate why some immune cells destroy engulfed microbes efficiently while others show defective host defense.
Lysosomal enzyme activity provides a way to examine several connected processes, including microbial destruction, degradation of cellular components, and antigen presentation. In infection research, these activities help relate intracellular breakdown to the immune system’s handling of engulfed material. Changes in enzyme production, targeting, or acidification can be examined as potential indicators of immune dysfunction.
They connect lysosomal processing with two major outcomes: pathogen clearance and maintenance of cellular quality control. Researchers can use lysosomal enzymes as targets when studying how defective production, delivery, or acidification alters immune-cell performance. This focus also connects infection biology with lysosomal storage diseases, where failures in the same processing system produce broader cellular consequences.