ArticleJournal of orthopaedic surgery and research2021
Adipogenic differentiation was inhibited by downregulation of PPARγ signaling pathway in aging tendon stem/progenitor cells.
Article in Journal of orthopaedic surgery and research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
12 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.
- G Allele of the rs1801282 Polymorphism in PPARγ Gene Confers an Increased Risk of Obesity and Hypercholesterolemia, While T Allele of the rs3856806 Polymorphism Displays a Protective Role Against Dyslipidemia: A Systematic Review and Meta-Analysis.Frontiers in endocrinology · 2022Pooled it
- Transcriptional Adaptations to Muscle Loading in a Murine Model of Achilles Tendinopathy.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2026Article
- Canine Endometrial Mesenchymal Stem Cells: Characterization and Functional Assessment for Cartilage Repair.International journal of molecular sciences · 2025Article
- Tendon Aging: A Silent Enemy Revealed Strategies for Effective Treatment.Aging medicine (Milton (N.S.W)) · 2025Review
- Exploring molecular and cellular signaling pathways: Unraveling the pathogenesis of tendinopathy.Journal of orthopaedic translation · 2025Review
- Crosstalk Between Antioxidants and Adipogenesis: Mechanistic Pathways and Their Roles in Metabolic Health.Antioxidants (Basel, Switzerland) · 2025Review
- Erroneous Differentiation of Tendon Stem/Progenitor Cells in the Pathogenesis of Tendinopathy: Current Evidence and Future Perspectives.Stem cell reviews and reports · 2025Review
- Tendon Tissue Engineering: Pathophysiological Mechanism and Bioengineering Therapy of Tendinopathy.International journal of nanomedicine · 2025Review
- Caveolin-1 is involved in fatty infiltration and bone-tendon healing of rotator cuff tear.Molecular medicine (Cambridge, Mass.) · 2023Article
- Global research trends and hotspots on tendon-derived stem cell: a bibliometric visualization study.Frontiers in bioengineering and biotechnology · 2023Article
- The Functions and Mechanisms of Tendon Stem/Progenitor Cells in Tendon Healing.Stem cells international · 2023Review
- PPARγ Gene Polymorphisms, Metabolic Disorders, and Coronary Artery Disease.Frontiers in cardiovascular medicine · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundTendon stem/progenitor cells (TSPCs) play a vital role in tendon repair and regeneration. Previously we found more adipocytes accumulated in the patellar tendon injury sites in aging rats compared with the young ones, of which the mechanism is still unknown. Here, we want to identify whether erroneous differentiation of TSPCs by aging accounts for the adipocyte accumulation.
methodsTSPCs from young and aging rats were isolated and propagated. Both young and aging TSPCs were induced to differentiate into adipocytes, and Oil red O staining, quantitative real-time polymerase chain reaction (qRT-PCR), western-blot and immunofluorescent staining were used to evaluate the capability of TSPCs. RNA sequencing was utilized to screen out different genes and signaling pathways related to adipogenesis between young and aging TSPCs.
resultsThe Oil red O staining showed there were more adipocytes formed in young TSPCs. Besides, adipogenic markers perilipin, peroxisome proliferator-activated receptor γ (PPARγ), CCAAT/enhancer-binding proteins alpha (C/EBPα) and Fatty acid-binding protein 4 (FABP4) were elevated both at gene and protein level. PPARγ signaling pathway was selected as our target via RNA sequencing. After adding the signaling activators, Rosiglitazone maleate (RM), inhibited adipogenesis of aging TSCs was reversed.
conclusionsIn conclusion, aging inhibited adipogenesis of TSPCs by down-regulating PPARγ signaling. It is not likely that the adipocyte accumulation in aging tendon during repair was due to the aging of TSPCs. This may provide new targets for curing aging tendon injuries or tendinopathies.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.