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Year : 2020  |  Volume : 9  |  Issue : 1  |  Page : 58-61

Evaluation of Mycobacterium kansasii extracellular vesicles role in BALB/c mice immune modulatory

Department of Mycobacteriology and Pulmonary Research, Microbiology Research Center, Pasteur Institute of Iran, Tehran, Iran

Correspondence Address:
Seyed Davar Siadat
Pasteur Institute of Iran, No. 69, Pasteur Ave., Tehran
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijmy.ijmy_212_19

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Background:Mycobacterium kansasii as a nontuberculosis mycobacteria, naturally release extracellular vesicles (EVs) with widespread utilities. The aim of the present study was the extraction and biological evaluation of M. kansasii EV and its role in BALB/c mice immune modulatory by considering EVs medical usage specificities. Method: Density gradient ultracentrifugation method was used to EVs extraction from standard species of M. kansasii. Biologic validation of EVs has been performed by physicochemical experiments. Immunization has been done by subcutaneous injection to BALB/c mice, then spleen cell isolation and lymphocyte transformation test and eventually ELISA cytokine assays were made for interleukin-10 (IL-10) and interferon-gamma (IFN-γ). IBM SPSS version 22 software (SPSS. Inc., Chicago, IL, USA) was used for the data calculation. The evaluation of variables was conducted using one sample t-test. Results: Physicochemical experiment results contribute that extracted EVs have intransitive capability to use in immunization schedule. Finally, ELISA test results showed that EVs induced IL-10 production, but have no effect on IFN-γ. Conclusions: In this current study, EVs were prepared in high-quality composition. The results of cytokine assay revealed that the extracted EVs have anti-inflammatory property. Accordingly, this macromolecule can be used as immune modulatory agents to prevent severe immune reactions, especially in lungs disorders.

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