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Updated: Jun 6, 2026
08:01
A Two-Step Strategy that Combines Epigenetic Modification and Biomechanical Cues to Generate Mammalian Pluripotent Cells
Published on: August 29, 2020
Mitochondrial rejuvenation after induced pluripotency.
Steven T Suhr1, Eun Ah Chang, Jonathan Tjong
1Cellular Reprogramming Laboratory, Michigan State University, East Lansing, Michigan, USA.
Plos One
|December 3, 2010
Summary
Induced pluripotent stem cells (IPSCs) can rejuvenate aged cells. Reprogramming aged fibroblasts into IPSCs and re-differentiating them improved mitochondrial function, suggesting cellular rejuvenation.
Area of Science:
- Cellular Biology
- Mitochondrial Biology
- Stem Cell Research
Background:
- Mitochondrial function improves during embryonic stem cell differentiation.
- Induced pluripotent stem cells (IPSCs) may not fully reset age-related mitochondrial decline.
- Mitochondrial quality and function are critical for cellular energetics.
Purpose of the Study:
- To investigate the impact of induced pluripotency and subsequent differentiation on mitochondrial function in aged cells.
- To determine if IPSC reprogramming can rejuvenate the mitochondrial complement of aged fibroblasts.
Main Methods:
- Biochemical assays and electron microscopy were used to analyze mitochondrial properties.
- Fibroblast cell lines, corresponding IPSCs, and re-derived fibroblasts were examined.
- Aged fibroblasts were reprogrammed into IPSCs and then re-differentiated.
Main Results:
- Re-derived fibroblasts exhibited significantly improved mitochondrial quality and function compared to input aged fibroblasts.
- The extensive differentiation regimen used for re-derivation may mimic natural mammalian development.
- IPSC conversion appears to reset certain aging parameters while also rejuvenating cellular energetic capacity.
Conclusions:
- IPSC conversion can reset the biological clock and rejuvenate the energetic capacity of aged cells.
- Mitochondrial rejuvenation is a key outcome of the IPSC reprogramming and differentiation process.
- These findings have implications for regenerative medicine and understanding cellular aging.
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