Cell Entry Peptide
Cell Entry Peptide - Related Videos
02:38
An Assay to Evaluate the Effect of Test Compounds on Viral Entry and Fusion in Host Cells
0 Views •
2025
This video demonstrates an assay to evaluate antiviral agents that target specific steps of the viral entry into host cells and fusion with the endosome. The cells are incubated at a low temperature and then infected with HCV. The low temperature permits viral binding to host cells but inhibits internalization via endocytosis. The test antiviral compound is added, and the cells are incubated at physiological temperature. This shift to a higher temperature facilitates viral entry and allows...
06:15
Biotinylated Cell-Penetrating Peptide Probe to Detect Protein-Protein Interactions
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2025
This video demonstrates a technique that uses biotinylated cell-penetrating peptides to detect intracellular protein-protein interactions. The cell-penetrating peptides facilitate the conjugated peptide to enter a cell and specifically bind to its interacting proteins. The biotin, after binding to avidin, allows purification of the interacting proteins’ complex from a cell lysate.
01:27
Adjusting Entries
0 Views •
2025
In accounting, a business's economic activities are segmented into designated time intervals, typically monthly, quarterly, or annually, known as accounting periods. This segmentation facilitates consistent tracking, summarization, and reporting of financial data, enabling stakeholders to accurately evaluate a company's performance and financial position. Companies must incorporate adjusting entries at the close of each period to ensure that financial reports conform to the accrual basis of...
12:27
Measuring Peptide Translocation into Large Unilamellar Vesicles
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Cited by 9 •
2012
This protocol details a method for the quantitative measure of peptide translocation into large unilamellar lipid vesicles. This method also provides information about the rate of membrane translocation and can be used to identify peptides that efficiently and spontaneously cross lipid bilayers.
08:39
Live-cell Imaging of Fungal Cells to Investigate Modes of Entry and Subcellular Localization of Antifungal Plant Defensins
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Cited by 6 •
2017
Plant defensins play an important role in plant defense against pathogens. For effective use of these antifungal peptides as antifungal agents, understanding their modes of action (MOA) is critical. Here, a live-cell imaging method is described to study critical aspects of the MOA of these peptides.
FAQs
Negatively charged components of the plasma membrane help initiate cell entry peptide uptake. Electrostatic attraction brings the peptide into close contact with the membrane, creating an interaction that can support either endocytosis or direct passage through the lipid bilayer. Which route predominates affects where the cargo travels inside the cell.
Endosomal release is a decisive step because material taken up by endocytosis can remain enclosed rather than become available within the cell. A peptide may therefore produce strong cellular uptake without effective delivery if its cargo is not released from endosomes. Delivery success must be judged by intracellular availability, not entry alone.
Successful design requires balancing uptake efficiency, toxicity, and intracellular release rather than maximizing a single measure. A peptide that enters cells efficiently may still be unsuitable if it harms cells or fails to release its cargo. Considering all three properties helps researchers interpret delivery performance and compare candidate peptides more meaningfully.
The cargo determines the biological use of a cell entry peptide. Supported payloads include nucleic acids, proteins, drugs, and imaging probes, so the same general delivery strategy can address gene-related, protein-based, therapeutic, or visualization goals. Researchers can select the peptide-cargo combination according to the intracellular question or application.
For studies of cell function, intracellular delivery allows researchers to place nucleic acids, proteins, drugs, or imaging probes inside living cells and examine their effects. In biomedical research, the same capability supports exploration of targeted therapies. The relevant outcome is whether the delivered cargo becomes available for its intended biological or therapeutic purpose.
Researchers should evaluate the cargo, uptake route, release from endosomes, delivery efficiency, and toxicity as connected variables. This assessment helps distinguish a formulation that enters cells from one that delivers useful intracellular cargo. It also provides a framework for adapting the approach to nucleic acids, proteins, drugs, or imaging probes.