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Current Molecular Pharmacology

Editor-in-Chief

ISSN (Print): 1874-4672
ISSN (Online): 1874-4702

Research Article

Immunomodulatory Activity of Diterpenes over Innate Immunity and Cytokine Production in a Human Alveolar Epithelial Cell Line Infected with Mycobacterium tuberculosis

Author(s): Alejandro David Hernández-Herrera, Julieta Luna-Herrera, Marisela del Rocío González-Martínez, Adria I. Prieto-Hinojosa, Ana Monica Turcios-Esquivel, Irais Castillo-Maldonado*, Dealmy Delgadillo-Guzmán, Agustina Ramírez-Moreno, Celia Bustos-Brito, Baldomero Esquivel, María-del-Carmen Vega-Menchaca and David Pedroza-Escobar*

Volume 16, Issue 6, 2023

Published on: 27 December, 2022

Page: [682 - 689] Pages: 8

DOI: 10.2174/1874467215666221005115007

open_access

Abstract

Background: Mexico has the largest number of the genus salvia plant species, whose main chemical compounds of this genus are diterpenes, these chemical compounds have shown important biological activities such as: antimicrobial, anti-inflammatory and immunomodulatory.

Objective: This study aimed to evaluate the immunomodulatory activity of three diterpenes: 1) icetexone, 2) anastomosine and 3) 7,20-dihydroanastomosine, isolated from Salvia ballotiflora, over innate immunity and cytokine production in a human alveolar epithelial cell line infected with Mycobacterium tuberculosis.

Methods: The immunomodulatory activity of diterpenes over innate immunity included reactive oxygen and nitrogen species (ROS and RNS) induction in response to infection; cytokine production included TNF-α and TGF-β induction in response to infection.

Results: The diterpenes anastomosine and 7,20-dihydroanastomosine showed a statically significant (p < 0.01) increase of RNS after 36 h of infection and treatment of 2.0 μg/mL. Then, the ROS induction in response to infection showed a consistent statically significant (p < 0.01) increase after 12 h of diterpenes treatments. The cell cultures showed an anti-inflammatory effect, in the case of TGF-β induction, in response to infection when treated with the diterpenes. On the other hand, there was not any significant effect on TNF-α release.

Conclusion: The diterpenes anastomosine and 7,20-dihydroanastomosine increased the production of RNS after 36 h of infection and treatment. Besides, the three diterpenes increased the production of ROS after 12 h. This RNS and ROS modulation can be considered as an in vitro correlation of innate immunity in response to Mycobacterium tuberculosis infection; and an indicator of the damage of epithelial lung tissue. This study also showed an anti-inflammatory immune response by means of TGF-β modulation when compared with control group.

Keywords: Inmmunomodulatory activity, icetexone, anastomosine, 7, 20-dihydroanastomosine, innate immunity, chemokine production, Mycobacterium tuberculosis, A549.

Graphical Abstract
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