Mesenchymal stem cell mitochondrial transfer effectively protects Leber's Hereditary Optic Neuropathy (LHON) mutant cells from mitochondrial damage.
Level 5 - mechanism / opinion, no new human data
In vitro cell culture model (bench research)
PubMed 41764869 · doi:10.1016/j.acthis.2026.152331
What was done
Investigated tunneling nanotube (TNT) formation and intercellular mitochondrial transfer within a coculture system combining bone marrow mesenchymal stem cells (BM-MSCs) and cells carrying the Leber's Hereditary Optic Neuropathy (LHON) ND4 mutation. The authors evaluated cellular outcomes including apoptosis, mitochondrial membrane potential, and reactive oxygen species (ROS) levels.
What was found
Mitochondrial transfer from BM-MSCs to LHON ND4 mutant cells occurred via TNTs. This transfer reduced apoptosis, restored mitochondrial membrane potential, and decreased ROS generation in the recipient mutant cells. The abstract provides no quantitative figures, effect sizes, or p-values.
Why it matters
It demonstrates in an in vitro model that MSC-mediated mitochondrial donation can mitigate metabolic dysfunction caused by LHON mutations, identifying a cellular mechanism for potential future regenerative strategies.
Limits
The study is restricted to an in vitro coculture model and does not evaluate in vivo tissue integration, durability of effect, or delivery to retinal ganglion cells. The abstract provides no quantitative metrics, replication details, or statistical parameters.
Cited by
- supports Stem cells are capable of replacing damaged organelles, such as mitochondria, in other cells.