Lysosomes
These membrane-bound vesicles contain a variety of hydrolytic enzymes capable of breaking down a wide range of biological molecules, including proteins, nucleic acids, carbohydrates, and lipids.
Lysosomes play a crucial role in cellular homeostasis, recycling, and the degradation of damaged or unwanted cellular components.
Dysfunctions in lysosomal structure or activity have been implicated in a number of inherited metabolic disorders, known as lysosomal storage diseases, as well as in more common age-related diseases like Alzheimer's and Parkinson's.
Understanding the mechanisms governing lysosome function is an active area of research with important implications for human health and disease.
A typo: Lysosomes are specialzied organelles found in eukaryotic cells that function as the cell's digestive system.
Most cited protocols related to «Lysosomes»
Most recents protocols related to «Lysosomes»
Example 4
To determine where 2F2-grafted “humanized” antibodies and antibody variants are delivered upon internalization into the cell, colocalization studies of the anti-CD79b antibodies internalized into B-cell lines may be assessed in Ramos cell lines. LAMP-1 is a marker for late endosomes and lysosomes (Kleijmeer et al., Journal of Cell Biology, 139(3): 639-649 (1997); Hunziker et al., Bioessays, 18:379-389 (1996); Mellman et al., Annu. Rev. Dev. Biology, 12:575-625 (1996)), including MHC class II compartments (MIICs), which is a late endosome/lysosome-like compartment. HLA-DM is a marker for MIICs.
Ramos cells are incubated for 3 hours at 37° C. with 1 μg/ml 2F2-grafted “humanized” antibodies and antibody variants, FcR block (Miltenyi) and 25 μg/ml Alexa647-Transferrin (Molecular Probes) in complete carbonate-free medium (Gibco) with the presence of 10 μg/ml leupeptin (Roche) and 5 μM pepstatin (Roche) to inhibit lysosomal degradation. Cells are then washed twice, fixed with 3% paraformaldehyde (Electron Microscopy Sciences) for 20 minutes at room temperature, quenched with 50 mM NH4Cl (Sigma), permeabilized with 0.4% Saponin/2% FBS/1% BSA for 20 minutes and then incubated with 1 μg/ml Cy3 anti-mouse (Jackson Immunoresearch) for 20 minutes. The reaction is then blocked for 20 minutes with mouse IgG (Molecular Probes), followed by a 30 minute incubation with Image-iT FX Signal Enhancer (Molecular Probes). Cells are finally incubated with Zenon Alexa488-labeled mouse anti-LAMP1 (BD Pharmingen), a marker for both lysosomes and MIIC (a lysosome-like compartment that is part of the MHC class II pathway), for 20 minutes, and post-fixed with 3% PFA. Cells are resuspended in 20 μl saponin buffer and allowed to adhere to poly-lysine (Sigma) coated slides prior to mounting a coverglass with DAPI-containing VectaShield (Vector Laboratories). For immunofluorescence of the MIIC or lysosomes, cells are fixed, permeabilized and enhanced as above, then co-stained with Zenon labeled Alexa555-HLA-DM (BD Pharmingen) and Alexa488-Lamp1 in the presence of excess mouse IgG as per the manufacturer's instructions (Molecular Probes).
Accordingly, colocalization of 2F2-grafted “humanized” antibodies or antibody variants with MIIC or lysosomes of B-cell lines as assessed by immunofluorescence may indicate the molecules as excellent agents for therapy of tumors in mammals, including B-cell associated cancers, such as lymphomas (i.e. Non-Hodgkin's Lymphoma), leukemias (i.e. chronic lymphocytic leukemia), and other cancers of hematopoietic cells.
Example 10
The ETSD design successfully translocated N to the endosomal subcellular compartment. After infection of HeLa cells with N-ETSD, N co-localized with the endosomal marker 45 transferrin receptor (CD71), as shown in
Example 6
Example 11
Based on the evidence that S-Fusion+N-ETSD resulted in enhanced expression of physiologically-relevant RBD and that N-ETSD successfully translocated to the endosomal/lysosomal compartment, the bivalent hAd5 S-Fusion+N-ETSD vaccine was chosen for inoculation of 7-week old female CD-1 mice. The unique properties of this construct would result in the generation of both CD8+ and CD4+ T-cell responses and neutralizing antibodies. As described in Methods, mice received an initial injection on Day 0 and a second injection on Day 21. Sera were collected on Day 0 and at the end of the study on Day 28 for antibody and neutralization analyses. Splenocytes were also collected on Day 28 for intracellular cytokine staining (ICS) and ELISpot analyses. All age- and gender-matched animals assigned to the study appeared normal with no site reactions and no loss of body weight throughout the dosing were seen, consistent with previous observations with the hAd5 [E1-, E2b-, E3-] platform
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More about "Lysosomes"
These organelles contain a variety of hydrolytic enzymes capable of breaking down a wide range of biological molecules, including proteins, nucleic acids, carbohydrates, and lipids.
Lysosomes play a crucial role in cellular homeostasis, recycling, and the degradation of damaged or unwanted cellular components.
Dysfunctions in lysosomal structure or activity have been implicated in a number of inherited metabolic disorders, known as lysosomal storage diseases, as well as in more common age-related diseases like Alzheimer's and Parkinson's.
Understanding the mechanisms governing lysosome function is an active area of research with important implications for human health and disease.
Lysosome research often utilizes fluorescent dyes like LysoTracker Red DND-99, LysoTracker Red, LysoTracker, LysoTracker Green DND-26, and LysoTracker Deep Red to visualize and study these organelles.
Other compounds like Hoechst 33342, Bafilomycin A1, and Chloroquine are also used to investigate lysosomal structure and function.
The proteasome inhibitor MG132 can also provide insights into the role of lysosomes in protein degradation.
Optimizing research protocols and accurately locating the best published methods is crucial for advancing our understanding of these important cellular structures.
PubCompare.ai's AI-powered tools can help researchers unlock reproducibility and accuracy in lysosome studies by effortlessly comparing published protocols and identifying the most suitable approaches.