What this means
Scientists grew skin-like cells from a patient with a rare aging syndrome and watched them age early. This is a lab study, so it does not show what happens in people.
Plain-English summary written by an AI model from the abstract. The original is below.
- Who it was tested in
- Skin-like cells from one patient, grown in a lab
- Kind of research
- A study
The science
- Original title
- Accelerated Senescence of Fibroblast-Like Cells Derived from Induced Pluripotent Stem Cells of a Patient with Wiedemann-Rautenstrauch Progeroid Syndrome.
- Authors
- Orlova EA, Shchukina AA, Kalmykova AI
- Journal
- Biochemistry. Biokhimiia
- Published
- Oct 25, 2026
- Study type
- Study · in humans
- PMID
- 42927762 ↗
Abstract
The study of senescence dynamics in cells obtained from patients with accelerated aging syndromes provides a model for understanding the fundamental mechanisms of cellular senescence and for the search for approaches to slowing it down. Wiedemann-Rautenstrauch progeroid syndrome, caused by a mutation in the gene encoding the catalytic subunit of RNA polymerase III POLR3A, is a poorly studied syndrome with the earliest manifestation of accelerated aging features. Previously, we obtained induced pluripotent stem cells (iPSCs) from the fibroblasts of a patient with this syndrome. These iPSCs displayed changes in nucleolar structure, genome instability, and impairments in telomere maintenance mechanisms, as a result of which the telomeres did not elongate during reprogramming of the patient's fibroblasts into iPSCs. During iPSC differentiation, we obtained fibroblast-like cells (secondary fibroblasts), which were used to study dynamics of accelerated senescence. Expression of the mutant POLR3A was decreased in the secondary fibroblasts compared with the iPSCs; however, features of accelerated senescence were already detectable at early passages, manifested as increased β-galactosidase activity and increased expression of the cell-cycle inhibitor p16. Differentiation was accompanied by a pronounced shortening of telomere length, which had not been restored during the reprogramming of the patient's cells into iPSCs. The data obtained demonstrate that genomic instability of stem cells exerts an accelerating effect on the development of progeroid features during cellular differentiation.
Orlova EA, Shchukina AA, Kalmykova AI Accelerated Senescence of Fibroblast-Like Cells Derived from Induced Pluripotent Stem Cells of a Patient with Wiedemann-Rautenstrauch Progeroid Syndrome. Biochemistry. Biokhimiia. 2026. doi:10.1134/S0006297926602819. PMID: 42927762. https://pubmed.ncbi.nlm.nih.gov/42927762/
Related research
Mixing a senescence-clearing drug with trametinib slowed glioma regrowth in mice
Researchers found a drug combination that cleared aging-like tumour cells in mice and slowed regrowth. This does not show the combination would work the same way in children.
Neuronal receptor remodeling in the aging periosteum: From single-cell atlases to regenerative targets.
The periosteum is the most densely innervated compartment of the skeleton and harbors periosteal stem cells expressing a broad repertoire of neuronal receptors traditionally associated with the nervous system.
The Oxidative-Mitochondrial-Inflammatory Axis in Retinitis Pigmentosa: Extracellular mtDNA as Biomarker and Therapeutic Read-Out.
Retinitis pigmentosa (RP) is the most common inherited retinal dystrophy (prevalence ~1:4000) and a leading Mendelian cause of working-age blindness.
Stem cells and exosomes studied for organ aging in animals
This is a review of 34 animal studies on stem cells and exosomes. It suggests these treatments may help aging organs, but the review does not show they work in people.
Fruit fly study finds a gene that helps remove aging gut cells
Researchers found a protein-making gene that rises in aging fruit fly gut cells and helps them get shed. This shows one possible way aging gut cells are cleared, but it is only a fruit fly finding.
Squeezing cell nuclei helps gene tools switch on cell changes in mice
Researchers squeezed mouse skin cells briefly, which loosened tightly packed DNA and helped gene tools work better. The skin cells from aged mice also looked biologically younger on DNA age markers.
See all research on Stem cell therapy →