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MSC&Exosome.Ed
Section 10 of 10 — Condition-specific literature

Osteoarthritis of the Knee: Current Research

A reproducible, date-sorted summary of the 20 most recently PubMed-indexed studies on mesenchymal stem cell or exosome approaches to knee osteoarthritis.

Educational information only — not medical or legal advice. This page is for general public education about FDA regulation of regenerative medicine. It does not diagnose, treat, or recommend treatment for any condition, and it is not a substitute for consulting a licensed physician about a medical question or a licensed attorney about a legal question. See the full disclaimer.
This is a literature summary, not a treatment claim. Listing a study here does not mean any MSC or exosome product is FDA-approved, safe, or effective for this condition. As of this draft, FDA has not approved any exosome product for any indication, and has not approved MSC-derived exosome therapy for this condition. This page describes what has been published in the peer-reviewed and preprint literature — it is not medical advice and is not a recommendation to pursue any specific treatment. Consult a licensed physician about any medical decision.
Search methodology. Studies were retrieved directly from the National Library of Medicine's PubMed database via the NCBI E-utilities API, using a combined search for mesenchymal stem cell OR exosome terms and the condition-specific terms below, sorted to surface the most recently indexed results. This is a mechanical, reproducible search — it is not a hand-curated "best evidence" list, and it was not filtered for study type or species (human vs. animal/preclinical); it includes randomized controlled trials, case reports, preclinical/animal studies, mechanistic laboratory studies, and narrative/systematic reviews. As a second pass, this list was manually screened for on-topic relevance to the condition named in the page title (removing results that matched the search terms technically but addressed a different anatomical site, an unrelated technology, or were not peer-reviewed), with each removed result backfilled by the next genuinely on-topic result from the same recency-sorted search. A reviewer should still independently assess study quality and peer-review status before citing any individual study as support for a specific claim.

Search terms used

(mesenchymal stem cell OR exosome) AND (knee osteoarthritis) — PubMed, sorted for recency, retrieved 2026/08/06 through 2026/05/28, 20 results of approximately 1,258 total matches for this search string.

Relevance cleanup applied. One study addressing ankle (not knee) osteoarthritis (PMID 42510508) was removed and backfilled with the next genuinely on-topic result from the same recency-sorted search. A few remaining items address platelet-rich plasma (PRP) or general orthobiologics rather than MSC/exosome therapy specifically — these are left in as reasonably on-topic but should still be individually screened before citation. One 2026 first-in-human Phase I/IIa dose-escalation study (Vonk et al., Cartilage) and one large network meta-analysis (Han et al., Arthroscopy) are flagged as particularly relevant for a reviewer's first pass.

20 most recent PubMed-indexed results

  1. Responders vs. non-responders to mesenchymal stromal cells in knee osteoarthritis: Mechanistic correlates of donor cell and patient features.
    Robb KP et al. — Stem cell reports — 2026/08/06 — PMID: 42561945 · DOI: 10.1016/j.stemcr.2026.103024
  2. Safety and Efficacy of Allogeneic Integrin α10β1-Selected Mesenchymal Stem Cells in the Treatment of Knee Osteoarthritis: A First-In-Human Phase I/IIa Dose Escalation Study.
    Vonk LA et al. — Cartilage — 2026/08/03 — PMID: 42544546 · DOI: 10.1177/19476035261475741
  3. Healing from Within: Regenerative Medicine in Pain Therapy.
    Loffredo AJ et al. — Physical medicine and rehabilitation clinics of North America — 2026/08/01 — PMID: 42379698 · DOI: 10.1016/j.pmr.2026.03.011
  4. Intra-articular Orthobiologics Show Statistically but Not Clinically Meaningful Improvements Compared With Viscosupplementation in Knee Osteoarthritis: A Network Meta-analysis of Randomized Controlled Trials.
    Han JH et al. — Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association — 2026/07/29 — PMID: 42524752 · DOI: 10.1002/arj.70411
  5. Mesenchymal stem cell-extracellular vesicles deliver microRNAs that prevent nerve growth factor-induced sensory neuron sensitization.
    Qiu L et al. — The Journal of neuroscience : the official journal of the Society for Neuroscience — 2026/07/28 — PMID: 42521624 · DOI: 10.1523/JNEUROSCI.0178-26.2026
  6. Potential for Cartilage Restoration in Osteoarthritis Patients Through Intra-Articular Injection of Mesenchymal Stem Cells: An MRI-Based Morphological Evaluation of Repair Cartilage - A Narrative Review.
    Jacob G et al. — Modern rheumatology — 2026/07/28 — PMID: 42520221 · DOI: 10.1093/mr/roag061
  7. An International Expert Consensus Statement Defining the Best Practices and Areas of Uncertainty Concerning the Use of Orthobiologics.
    Kunze KN et al. — The Journal of bone and joint surgery. American volume — 2026/07/28 — PMID: 42520131 · DOI: 10.2106/JBJS.26.00723
  8. Molecular Advances in Intra-Articular Injections for Knee Osteoarthritis.
    Roman-Belmonte JM et al. — Frontiers in bioscience (Landmark edition) — 2026/07/24 — PMID: 42530250 · DOI: 10.31083/FBL51917
  9. Artificial intelligence and big data for precision regenerative medicine in knee osteoarthritis: endotyping, responder prediction, and clinical translation.
    Zheng L et al. — Frontiers in bioengineering and biotechnology — 2026/07/15 — PMID: 42529139 · DOI: 10.3389/fbioe.2026.1899487
  10. Micro-Fragmented Adipose Tissue (MFAT) in Orthopedic Regenerative Medicine: A Narrative Review of the Biological Basis and Clinical Evidence.
    Yuan C et al. — International journal of molecular sciences — 2026/07/10 — PMID: 42511529 · DOI: 10.3390/ijms27146185
  11. Preclinical Evaluation of Human Donor-Derived Micronized Bone Marrow Stroma/Parenchyma Versus Bone Marrow Aspirate Concentrate in a Rat Model of Post-Traumatic Knee Osteoarthritis.
    Nishimura H et al. — Cells — 2026/07/10 — PMID: 42505359 · DOI: 10.3390/cells15141249
  12. A thermosensitive hydrogel delivery system incorporating wogonin-treated mesenchymal stromal cell (MSC)-derived exosomes alleviates osteoarthritis.
    Zhu K et al. — Journal of biological engineering — 2026/07/08 — PMID: 42421137 · DOI: 10.1186/s13036-026-00709-x
  13. Core binding factor β preserves early chondrogenic identity and prevents hypertrophic transition in cartilage organoids formation.
    Che X et al. — Cell & bioscience — 2026/07/08 — PMID: 42421090 · DOI: 10.1186/s13578-026-01616-w
  14. Autologous collagen-induced chondrogenesis versus mesenchymal stem cell therapy combined with high tibial osteotomy for medial knee osteoarthritis: a retrospective study.
    Kim YH et al. — Stem cell research & therapy — 2026/07/06 — PMID: 42410483 · DOI: 10.1186/s13287-026-05151-w
  15. Comparative Efficacy and Safety of Intra-Articular Adipose-Derived, Bone Marrow-Derived, and Peripheral Blood-Derived Stem Cell Injections for Knee Osteoarthritis: A Systematic Review.
    Jeon SY et al. — Bioengineering (Basel, Switzerland) — 2026/07/01 — PMID: 42510437 · DOI: 10.3390/bioengineering13070771
  16. Serum Leptin Exacerbates Osteoarthritis by Promoting Subchondral Bone H-Type Vessel Angiogenesis via Activation of the PI3K/AKT Pathway.
    Li R et al. — Journal of cellular and molecular medicine — 2026/07/01 — PMID: 42374652 · DOI: 10.1111/jcmm.71232
  17. Photobiomodulation and extracellular vesicles-loaded alginate from adipose mesenchymal stem cells for cartilage repair in a rat model of osteoarthritis.
    Hang NLT et al. — International journal of biological macromolecules — 2026/07/01 — PMID: 42288269 · DOI: 10.1016/j.ijbiomac.2026.152996
  18. Comparative efficacy of platelet-rich plasma monotherapy versus combination therapies for knee osteoarthritis: a systematic review and network meta-analysis.
    Luan D et al. — Journal of orthopaedic surgery and research — 2026/06/24 — PMID: 42343396 · DOI: 10.1186/s13018-026-07042-5
  19. SIRT6 enhances the therapeutic potential of extracellular vesicles in mitigating osteoarthritis in rat models.
    Yang G et al. — Stem cell research & therapy — 2026/06/23 — PMID: 42337776 · DOI: 10.1186/s13287-026-05112-3
  20. Patient Age Is Not a Determinant of 12-Month Pain Response After Autologous Adipose-Derived Stromal Vascular Fraction Injection for Knee Osteoarthritis.
    Kim YS et al. — Medicina (Kaunas, Lithuania) — 2026/05/28 — PMID: 42356058 · DOI: 10.3390/medicina62061044

Sources cited in this section

  1. PubMed E-utilities esearch query (knee OA)
  2. Individual PMID links above each resolve to the study's PubMed record at pubmed.ncbi.nlm.nih.gov.