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Updated: Jul 21, 2025

Optimized Protocol for Efficient Transfection of Dendritic Cells without Cell Maturation

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Published on: July 8, 2011

Engineered Human Dendritic Cell Exosomes as Effective Delivery System for Immune Modulation.

Ranya Elsayed¹, Mahmoud Elashiry¹, Cathy Tran¹

¹Department of Periodontics, Dental College of Georgia, Augusta University, Augusta, GA 30912, USA.

International Journal of Molecular Sciences

|July 29, 2023

Summary

Human dendritic cell exosomes show potential as a novel immunotherapy for periodontal disease. These exosomes can modulate immune cells, promoting a bone-sparing response and offering a new therapeutic avenue for treating gum disease.

Keywords:

dendritic cells exosomes immunotherapy periodontitis

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Preparation of Tumor Antigen-loaded Mature Dendritic Cells for Immunotherapy

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Published on: August 1, 2013

Area of Science:

Immunology
Cell Biology
Periodontology

Background:

Exosomes (exos) carry therapeutic cargo but their role in periodontitis (PD) is unknown.
Dendritic cells (DCs) are key immune regulators with established roles in immunotherapy.
Previous studies in mice showed DC-derived exosomes could influence bone loss in PD models.

Purpose of the Study:

To test if human monocyte-derived DC (MoDC)-derived exosomes are a safe and effective immunotherapy.
To evaluate their ability to modulate human DC and T cell immune responses in vitro.
To investigate the therapeutic potential of exosomes for periodontal disease.

Main Methods:

Generated regulatory (reg), stimulatory (stim), and immature (i) MoDC subtypes.
Isolated and characterized exosomes from each MoDC subtype.
Assessed the effects of MoDC-derived exosomes on recipient MoDCs and T cells in vitro.

Main Results:

Regulatory MoDC exosomes (RegMoDCexos) induced immune-regulatory changes in DCs and promoted regulatory T cells (Tregs).
Stimulatory MoDC exosomes (StimMoDCexos) induced pro-inflammatory Th17 cells.
Immature MoDC exosomes (iMoDCexos) had neutral immune effects, similar to controls.

Conclusions:

Human MoDC-derived exosomes are effective delivery vehicles for modulating DC and T cell immune responses in vitro.
MoDC exosomes represent a promising immunotherapeutic strategy for periodontal disease.
This approach could potentially inhibit bone loss in the gingival tissue.