The Role of Extracellular Vesicles in Chronic Inflammatory and Immune Processes

A special issue of Cells (ISSN 2073-4409). This special issue belongs to the section "Cellular Immunology".

Deadline for manuscript submissions: closed (20 August 2022) | Viewed by 8228

Special Issue Editor


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Guest Editor
Cedars-Sinai Medical Center, Los Angeles, CA, USA
Interests: extracellular vesicles; small non-coding RNA; regenerative medicine; cardiology; inflammation

Special Issue Information

Dear Colleagues,

Extracellular vesicles (EVs) comprise several classes of cell-derived nanoparticles secreted or passively shed by cells. EVs are evolutionarily conserved and play central roles in cellular communication. As such, mounting evidence points to their utility not only as diagnostic and prognostic markers of disease but also as therapy. Indeed the mechanism of action of many cell therapies relies on the secretion of EVs to mediate these effects. A central function of EV therapy revolves around their immunomodulatory bioactivity including attenuating the innate and adaptive immune response. 

Several studies in cell therapy models implicate EV cargo including small non-coding RNAs in regulating the expression of pro-inflammatory mediators. Moreover, chronic inflammation is the main driver behind diseases including heart failure, pulmonary fibrosis, and autoimmune disease. The capacity of EV-related cargo to modulate the transcriptome and epigenome of target cells rationalizes their capacity to attenuate chronic inflammation.

The focus of this special issue is the mechanism by which EVs and their constituents disrupt chronic inflammation in a variety of disease contexts. Chronic inflammation comprises the inflammasome pathway, innate immune, and adaptive immune activation. 

Dr. Ahmed Ibrahim
Guest Editor

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Keywords

  • extracellular vesicles
  • exosomes
  • chronic inflammation
  • adaptive immunity
  • innate immunity
  • immunomodulation
  • anti-inflammation
  • microRNAs
  • chronic inflammation
  • inflammasome

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Published Papers (2 papers)

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Research

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15 pages, 2654 KiB  
Article
Plasma Small Extracellular Vesicles with Complement Alterations in GRN/C9orf72 and Sporadic Frontotemporal Lobar Degeneration
by Sonia Bellini, Claudia Saraceno, Luisa Benussi, Rosanna Squitti, Sara Cimini, Martina Ricci, Laura Canafoglia, Cinzia Coppola, Gianfranco Puoti, Clarissa Ferrari, Antonio Longobardi, Roland Nicsanu, Marta Lombardi, Giulia D’Arrigo, Claudia Verderio, Giuliano Binetti, Giacomina Rossi and Roberta Ghidoni
Cells 2022, 11(3), 488; https://doi.org/10.3390/cells11030488 - 30 Jan 2022
Cited by 6 | Viewed by 3130
Abstract
Cutting-edge research suggests endosomal/immune dysregulation in GRN/C9orf72-associated frontotemporal lobar degeneration (FTLD). In this retrospective study, we investigated plasma small extracellular vesicles (sEVs) and complement proteins in 172 subjects (40 Sporadic FTLD, 40 Intermediate/Pathological C9orf72 expansion carriers, and 49 Heterozygous/Homozygous GRN [...] Read more.
Cutting-edge research suggests endosomal/immune dysregulation in GRN/C9orf72-associated frontotemporal lobar degeneration (FTLD). In this retrospective study, we investigated plasma small extracellular vesicles (sEVs) and complement proteins in 172 subjects (40 Sporadic FTLD, 40 Intermediate/Pathological C9orf72 expansion carriers, and 49 Heterozygous/Homozygous GRN mutation carriers, 43 controls). Plasma sEVs (concentration, size) were analyzed by nanoparticle tracking analysis; plasma and sEVs C1q, C4, C3 proteins were quantified by multiplex assay. We demonstrated that genetic/sporadic FTLD share lower sEV concentrations and higher sEV sizes. The diagnostic performance of the two most predictive variables (sEV concentration/size ratio) was high (AUC = 0.91, sensitivity 85.3%, specificity 81.4%). C1q, C4, and C3 cargo per sEV is increased in genetic and sporadic FTLD. C4 (cargo per sEV, total sEV concentration) is increased in Sporadic FTLD and reduced in GRN+ Homozygous, suggesting its specific unbalance compared with Heterozygous cases. C3 plasma level was increased in genetic vs. sporadic FTLD. Looking at complement protein compartmentalization, in control subjects, the C3 and C4 sEV concentrations were roughly half that in respect to those measured in plasma; interestingly, this compartmentalization was altered in different ways in patients. These results suggest sEVs and complement proteins as potential therapeutic targets to mitigate neurodegeneration in FTLD. Full article
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Review

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13 pages, 1790 KiB  
Review
Extracellular Vesicles, Inflammation, and Cardiovascular Disease
by Akbarshakh Akhmerov and Tanyalak Parimon
Cells 2022, 11(14), 2229; https://doi.org/10.3390/cells11142229 - 18 Jul 2022
Cited by 35 | Viewed by 4587
Abstract
Cardiovascular disease is a leading cause of death worldwide. The underlying mechanisms of most cardiovascular disorders involve innate and adaptive immune responses, and extracellular vesicles are implicated in both. In this review, we describe the mechanistic role of extracellular vesicles at the intersection [...] Read more.
Cardiovascular disease is a leading cause of death worldwide. The underlying mechanisms of most cardiovascular disorders involve innate and adaptive immune responses, and extracellular vesicles are implicated in both. In this review, we describe the mechanistic role of extracellular vesicles at the intersection of inflammatory processes and cardiovascular disease. Our discussion focuses on atherosclerosis, myocardial ischemia and ischemic heart disease, heart failure, aortic aneurysms, and valvular pathology. Full article
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