Original Article
  

Alterations in Mitochondrial and Inflammasome Homeostasis by 2-Chloroethyl Ethyl Sulfide and Their Mitigation by Curcumin: An in Vitro Study

Abstract

The mitochondrion has a substantial role in innate immunity and inflammasome signaling pathways. Sulfur mustard (SM) induces toxicity in cytoplasmic organelles. We aimed to evaluate the potential therapeutic effect of curcumin on the toxicity of SM analog through measuring gene expression levels of mitochondrial dynamics followed by induction of the inflammasome signaling pathway.
After the treatment of pulmonary epithelial cell line (A549) by 2-chloroethyl ethyl sulfide (CEES) (2500 mM) for 48h, the transcriptional activity of mitochondrial fission and fusion genes such as dynamin-related protein 1 (Drp1), mitochondrial fission 1 protein (Fis1), mitofusin-1 (Mfn1), mitofusin-2 (Mfn2), and Dominant optic atrophy (Opa1) and inflammasome pathway genes including absent in melanoma 2 (AIM2), NLR family containing protein 3 (NLRP3), and Apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) was measured. Furthermore, the inhibitory effect of curcumin (160 mM) concurrent with SM analog on the expression level of mitochondria and inflammasome genes was investigated.
CEES was able to over-express the fission, fusion (Drp1 ~ 8, Fis1 4.5, Mfn2 15, and Opa1 16-fold) and inflammasome genes (AIM2, NLRP3,  8 and 6-fold, respectively), whereas Mfn1 was significantly decreased (0.5-fold) and a not statistically significant decrease was observed in the ASC gene. Curcumin could modulate the effect of CEES, mitigate the expression of fission, fusion, and inflammasome genes exceedingly. However, a major increase in the repairer fusion gene (Mfn1, 6-fold) and complete suppression of the ASC gene were the outcomes of using the curcumin.
In conclusion, we suggest curcumin alleviates the disturbance of mitochondrial dynamics and downregulates the inflammasome genes exposed to the CEES.

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IssueVol 20 No 5 (2021) QRcode
SectionOriginal Article(s)
DOI https://doi.org/10.18502/ijaai.v20i5.7411
Keywords
2-chloroethyl ethyl sulfide Curcumin Inflammasomes Mitochondrial genes
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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
How to Cite
1.
Kia A, Nadi M, Hajhasan V, Salimian J. Alterations in Mitochondrial and Inflammasome Homeostasis by 2-Chloroethyl Ethyl Sulfide and Their Mitigation by Curcumin: An in Vitro Study. Iran J Allergy Asthma Immunol. 2021;20(5):614-622.