Cited by 116Extracellular vesicles in diseaseBone Metabolism and DiseasesMesenchymal stem cell research

Dendritic cell derived exosomes loaded with immunoregulatory cargo reprogram local immune responses and inhibit degenerative bone disease in vivo

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Elashiry, Mahmoud, Elashiry, Mohamed M., Elsayed, Ranya, Rajendran, Mythily, Auersvald, Carol, Zeitoun, Rana, Rashid, Mohammad H., Ara, Roxan +9 more·2020·Journal of Extracellular Vesicles

Abstract

Chronic bone degenerative diseases represent a major threat to the health and well‐being of the population, particularly those with advanced age. This study isolated exosomes (EXO), natural nano‐particles, from dendritic cells, the “directors” of the immune response, to examine the immunobiology of DC EXO in mice, and their ability to reprogram immune cells responsible for experimental alveolar bone loss in vivo . Distinct DC EXO subtypes including immune‐regulatory (regDC EXO), loaded with TGFB1 and IL10 after purification, along with immune stimulatory (stimDC EXO) and immune “null” immature (iDCs EXO) unmodified after purification, were delivered via I.V. route or locally into the soft tissues overlying the alveolar bone. Locally administrated regDC EXO showed high affinity for inflamed sites, and were taken up by both DCs and T cells in situ . RegDC EXO‐encapsulated immunoregulatory cargo (TGFB1 and IL10) was protected from proteolytic degradation. Moreover, maturation of recipient DCs and induction of Th17 effectors was suppressed by regDC EXO, while T‐regulatory cell recruitment was promoted, resulting in inhibition of bone resorptive cytokines and reduction in osteoclastic bone loss. This work is the first demonstration of DC exosome‐based therapy for a degenerative alveolar bone disease and provides the basis for a novel treatment strategy.

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Crossref · 10.1080/20013078.2020.1795362

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  • Pg-induced exosomes of the senescence-associated secretory phenotype express integrins and lectins that promote cell binding at the inflamed site.

    “Pg-induced EXO of the SASP express integrins and lectins that promote cell binding at the inflamed site [19,20].”

    From Oral Microbially-Induced Small Extracellular Vesicles Cross the Blood–Brain Barrier (2024) · cites this paper as [20]

    The Discussion states that dendritic-cell-derived exosomes express integrins and lectins that could promote binding and persistence at an inflamed site. It does not establish that these exosomes were Pg-induced or part of the senescence-associated secretory phenotype; those qualifiers are not supported by this paper. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • Pg-induced exosomes are enriched with virulence factors from Pg including gingipains, enabling them to disrupt barrier functions of the epithelium and penetrate through interstitial spaces and lymphatics to enter systemic circulation.

    “Moreover, those EXO are enriched with virulence factors from Pg including gingipains, a potent proteolytic enzyme, enabling them to disrupt barrier functions of the epithelium and penetrate through interstitial spaces and lymphatics to find their way into systemic circulation.”

    From Oral Microbially-Induced Small Extracellular Vesicles Cross the Blood–Brain Barrier (2024) · cites this paper as [20]

    The Discussion describes immunoregulatory dendritic-cell exosomes persisting at the gingival disease site, while the Methods describe a periodontitis model dependent on endogenous flora. Searches for Pg-induced exosomes, gingipains, epithelial barrier disruption, lymphatic passage, and systemic circulation found no passage addressing the attributed claim. (LLM, conf=0.75)

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Research works printed but not linked: 1

  1. [73]Eskan MA, Jotwani R, Abe T, et al The leukocyte integrin antagonist Del-1 inhibits IL-17-mediated inflammatory bone loss. Nat Immunol. 2012; 13: 465. 22447028 PMC3330141

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Authors
Elashiry, M., Elashiry, M. M., Elsayed, R., Rajendran, M., Auersvald, C., Zeitoun, R., Rashid, M. H., Ara, R., Meghil, M. M., Liu, Y., Arbab, A. S., Arce, R. M., Hamrick, M., Elsalanty, M., Brendan, M., Pacholczyk, R., & Cutler, C. W.
Affiliations
  • Ain Shams University (EG)
  • Augusta University (US)
  • Department of Periodontics Dental College of Georgia at Augusta University GA USA
  • The University of Texas Health Science Center at Houston (US)
  • Western University of Health Sciences (US)
  • Department of Cellular Biology and Anatomy Medical College of Georgia at Augusta University GA USA
  • Georgia Cancer Center Augusta GA USA
Corresponding author
Cutler, Christopher W.
Venue
Journal of Extracellular Vesicles
Publisher
Wiley
Published
2020-08-07
Volume
9
Issue
1
Pages
1795362-1795362
ISSN
2001-3078 (ISSN-L)
OpenAlex
W3048286913
Cited by
116
References
76
Citations by year
2026: 13 · 2025: 25 · 2024: 21 · 2023: 16 · 2022: 20 · 2021: 19 · 2020: 2
FWCI
4.62
Type
journal article
Language
en
Open access
Locations
  • Journal of Extracellular Vesicles (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Digital Commons-TMC (Texas Medical Center) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Carlos and Marguerite Mason Trust (1)
  • NIH-NIDCR (R01 DE014328)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Genetics › Mesenchymal stem cell research
Keywords
exosome therapy, alveolar bone loss, TGF-β1, IL-10, Th17 cells, regulatory T cells, osteoclasts, bone resorption, extracellular vesicles, local delivery, dendritic cell maturation

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