Mitochondrial-derived Peptides
Mitochondrial-derived Peptides - Related Videos
07:55
Subcellular Fractionation for ERK Activation Upon Mitochondrial-derived Peptide Treatment
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Cited by 6 •
2017
This protocol describes how to stimulate cells with mitochondrial-derived peptides and assess the signaling cascade and localization of phospho-proteins.
08:48
Peptide-derived Method to Transport Genes and Proteins Across Cellular and Organellar Barriers in Plants
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Cited by 15 •
2016
Existing methods for the modification of plants have limited applicability. The novel peptide-derived technology proposed here promises both simplicity and efficiency in the introduction of exogenous protein or genes into the desired intracellular compartments of intact plants.
04:59
Evaluating the Intracellular Distribution of Virus-Derived Peptide-Modified Antibody Conjugates
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2025
This video demonstrates the process of assessing the intracellular distribution of virus-derived peptide-modified antibody conjugates using confocal microscopy. The viral-derived nuclear localization sequence directs antibody-conjugates within the cytoplasm, confirmed through immunostaining and fluorescence measurement.
01:33
Anti-Tumor Effect of a Fusion Peptide Delivered by Engineered Salmonella typhimurium in a Mouse Model
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2026
Begin with mice bearing solid tumors implanted subcutaneously in the thigh.Inject the mice via the tail vein with a non-virulent, engineered strain of Salmonella typhimurium.The bacteria circulate in the bloodstream and selectively accumulate in the hypoxic, immunosuppressed tumor microenvironment.They carry a plasmid encoding a therapeutic fusion peptide composed of a cell-penetrating peptide and the mitochondrial target domain of a pro-apoptotic protein, along with phage-derived lysis...
02:59
Animal Mitochondrial Genetics
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2020
Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
FAQs
Production begins when mitochondrial DNA is transcribed, generating RNA from regions that contain short open reading frames. The mitochondrial translation machinery then uses that RNA to produce the corresponding peptide. This sequence connects mitochondrial gene expression with signaling, because the resulting molecules can influence processes beyond the immediate production site.
A mitochondrial-derived peptide may not produce identical effects in every tissue. The overview emphasizes that their actions are tissue-specific, so researchers must interpret findings within the biological context in which a peptide is present. This helps explain why the same signaling molecule can be relevant to metabolism, inflammation, cellular stress, or survival in different settings.
Humanin and MOTS-c serve as prominent examples for examining how mitochondrial genetic information contributes to communication and regulation. They are studied in relation to energy regulation, inflammation, aging, and disease. Comparing these peptides helps biology researchers investigate how mitochondrial signals may connect cellular conditions with broader physiological responses.
After production, some mitochondrial-derived peptides can enter the circulation or act within tissues. Circulating peptides provide a route for communication between mitochondria-containing cells and distant biological sites, while locally acting peptides can influence nearby tissue responses. These routes help connect mitochondrial activity with signaling throughout the cell and body.
Their connection to mitochondrial genetics, cellular stress responses, metabolism, inflammation, and survival makes these peptides potentially informative biological indicators. As candidate biomarkers, they may help researchers examine relationships between mitochondrial activity and aging or disease. Their tissue-specific behavior remains important, because interpretation may depend on where the peptide is produced or detected.
Mitochondrial-derived peptides are being considered as potential therapeutic agents because they are linked to energy regulation, inflammation, aging, disease, and cellular survival. Research seeks to determine whether their signaling activities could be used to influence these processes. Their tissue-specific effects must remain central when evaluating possible therapeutic relevance.