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Mitochondria

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...

Satellite Stem Cells and Muscular Dystrophy

Satellite Stem Cells and Muscular Dystrophy

Satellite stem cells or myosatellite cells are quiescent stem cells that Alexander Mauro first identified in 1961. These cells are located between the sarcolemma, the plasma membrane of muscle fibers, and the basal lamina, the connective tissue sheath covering it. These mononucleated cells are activated in response to muscle injury, can transform into myoblasts, and may form or repair muscle fibers. Myosatellite cells can provide additional myonuclei for muscle regeneration or return to a...

Translocation of Proteins into the Mitochondria

Translocation of Proteins into the Mitochondria

Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...

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MitoCeption: Transferring Isolated Human MSC Mitochondria to Glioblastoma Stem Cells

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Mitochondria Transplantation from Stem Cells for Mitigating Sarcopenia.

Xiulin Tian¹, Mengxiong Pan², Mengting Zhou³

¹Department of Nursing, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.

Aging and Disease

|May 17, 2023

Summary

Sarcopenia, the age-related loss of muscle, may be treated by stem cell-derived mitochondria. This approach targets mitochondrial damage, offering a promising therapy to improve muscle function and quality of life in older adults.

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Published on: May 18, 2017

Area of Science:

Geriatric Medicine
Cell Biology
Regenerative Medicine

Background:

Sarcopenia is the age-related decline in muscle mass and function, posing significant health and socioeconomic burdens.
Mitochondrial dysfunction and accumulation of damaged mitochondria in skeletal muscle are key contributors to sarcopenia.
Current treatments for sarcopenia are limited to nutritional support and physical activity.

Purpose of the Study:

To provide an overview of stem cell transplantation as a therapeutic strategy for sarcopenia.
To explore the role of mitochondria in sarcopenia and how stem cells can restore their function.
To introduce stem cell-derived mitochondrial transplantation as a novel treatment approach.

Main Methods:

Review of preclinical and clinical research on stem cell therapies for sarcopenia.
Analysis of mitochondrial delivery pathways by stem cells.
Evaluation of stem cell-derived mitochondrial transplantation.

Main Results:

Stem cells play a protective role in sarcopenia by delivering functional mitochondria.
Stem cell-derived mitochondrial transplantation demonstrates potential for alleviating sarcopenia.
Recent advances show promise in both preclinical and clinical settings.

Conclusions:

Stem cell-derived mitochondrial transplantation represents a novel and promising therapeutic avenue for sarcopenia.
Targeting mitochondrial health through stem cell interventions can improve muscle function and quality of life in aging populations.
Further research is needed to fully elucidate the advantages and challenges of this innovative treatment.