R848, a Toll-Like Receptors 7 and 8 Agonist, a Potential Therapy for Allergic Rhinitis Patients

ISSN: 2212-4055 (Online)
ISSN: 1871-5281 (Print)


Volume 13, 6 Issues, 2014


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Inflammation & Allergy - Drug Targets

Formerly: 'Current Drug Targets - Inflammation & Allergy

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Editor-in-Chief:
Kurt S Zaenker
Institute of Immunology and Experimental Oncology
University Witten/Herdecke
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R848, a Toll-Like Receptors 7 and 8 Agonist, a Potential Therapy for Allergic Rhinitis Patients

Author(s): Ghada Boghdadi, Noha Hammad, Ahmed Amer, Somaya Sammour and Samir Sorour

Affiliation: Immunology Research Lab, Department of Microbiology and Immunology, Faculty of Medicine, Zagazig University, Zagazig, Egypt.

Abstract

Background/Purpose(s): There is a growing interest in the targeting of Toll-like receptors (TLRs) for the treatment of allergic diseases. TLRs7/8 ligands are future candidates of therapeutic value in allergic rhinitis (AR). This study focus on TLRs7/8 ligand; resiquimod (R848) as an adjuvant to immunotherapy (IT) in AR patient.

Methods: Peripheral blood mononuclear cells (PBMCs) were obtained from atopic donors and non atopic donors. PBMCs were cultured in the absence and presence of date palm pollen allergen (Phoenix dactylifera; Pho d) and/or R848. Interleukin-4 (IL-4), IL-10, IL-13 and interferon gamma (IFN-γ) were measured in the culture supernatants.

Results: R848 was able to significantly increase the anti-inflammatory response in atopic donors more than non atopic donors. Nevertheless, the combination of both; R848 and Pho d provides inferior stimulus as compared to R848 alone in both atopic and non atopic donors.

Conclusion: Invitro treatment of PBMCs with R484 hijacks the pro inflammatory immune process triggered by TLRs7/8 to mediate anti-inflammatory response. This may provide a conception about the activity and efficacy of TLRs7/8 ligands in AR and open the gate for them to be applied in clinically in humans.


Keywords: Allergic Rhinitis, Date palm (Phoenix dactylifera; Pho d), R848, TLR.

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Article Details

Volume: 13
Issue Number: 2
First Page: 144
Last Page: 149
Page Count: 6
DOI: 10.2174/1871528113666140429111658
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