Olfactory ecto-mesenchymal stem cell-derived exosomes ameliorate murine Sjögren’s syndrome via suppressing Tfh cell response

Objectives: To investigate the effect of olfactory ecto-mesenchymal stem cell-derived exosomes (OE-MSC-Exos) on T follicular helper (Tfh) cell response and their implication in treating experimental Sjögrens syndrome (ESS). Methods: C57BL/6 mice were immunized with salivary glands (SG) proteins to induce ESS mouse model. OE-MSC-Exos were added to the Tfh cell polarization condition, and the proportion of Tfh cells was detected by FCM. The PD-L1 of OE-MSCs was silenced with small interfering RNA to extract siPD-L1-OE-MSC-Exos. Results: We found that transfer of OE-MSC-Exos markedly attenuated disease progression and reduced Tfh cell response in mice with ESS. In culture, OE-MSC-Exos potently inhibited the differentiation of Tfh cells from naïve T cells. Moreover, OE-MSC-Exos expressed high level of the ligand for the programmed cell death protein 1 (PD-L1), knocking down PD-L1 expression in OE-MSC-Exos significantly decreased their capacity to suppress Tfh cell differentiation in vitro. Consistently, transfer of OE-MSC-Exos with PD-L1 knockdown exhibited profoundly diminished therapeutic effect in ESS mice, accompanied with sustained Tfh cell response and high levels of autoantibody production. Conclusion: Our results suggest that OE-MSC-Exos may exert their therapeutic effect in ameliorating ESS progression via suppressing Tfh cell response in a PD-L1-dependent manner.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Olfactory ecto-mesenchymal stem cell-derived exosomes ameliorate murine Sjögren’s syndrome via suppressing Tfh cell response ; volume:3 ; number:4 ; year:2022 ; pages:198-207 ; extent:10
Rheumatology and immunology research ; 3, Heft 4 (2022), 198-207 (gesamt 10)

Urheber
Rui, Ke
Shen, Ziwei
Peng, Na
Zhao, Futao
Tang, Yuan
Liu, Shiyi
Xu, Xinyi
Liu, Chang
Wu, Ling
Tian, Jie
Lu, Liwei

DOI
10.2478/rir-2022-0035
URN
urn:nbn:de:101:1-2023020813065407224615
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
14.08.2025, 10:54 MESZ

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Beteiligte

  • Rui, Ke
  • Shen, Ziwei
  • Peng, Na
  • Zhao, Futao
  • Tang, Yuan
  • Liu, Shiyi
  • Xu, Xinyi
  • Liu, Chang
  • Wu, Ling
  • Tian, Jie
  • Lu, Liwei

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