AI Article Synopsis
- The Combretum leprosum Mart. plant, known as mofumbo, has traditional uses in treating inflammation and wounds, and can yield a compound called lupane, among others.
- Preclinical tests on lupane showed it exhibited low toxicity at concentrations under 1.5 μg/mL, but did not stimulate the production of inflammatory cytokines TNF-α or anti-inflammatory IL-10, nor did it affect topoisomerase enzymes.
- The study suggests that while lupane has moderate cytotoxicity, it may hold potential for further exploration in anti-inflammatory applications, despite not activating key cellular functions.
Article Abstract
Background: The Combretum leprosum Mart. plant, popularly known as mofumbo, is used in folk medicine for inflammation, pain and treatment of wounds. From this species, it is possible to isolate three triterpenes: (3β, 6β, 16β-trihydroxylup-20(29)-ene) called lupane, arjunolic acid and molic acid. In this study, through preclinical tests, the effect of lupane was evaluated on the cytotoxicity and on the ability to activate cellular function by the production of TNF-α, an inflammatory cytokine, and IL-10, an immuno regulatory cytokine was assessed. The effect of lupane on the enzymes topoisomerase I and II was also evaluated.
Methods: For this reason, peripheral blood mononuclear cells (PBMCs) were obtained and cytotoxicity was assessed by the MTT method at three different times (1, 15 and 24 h), and different concentrations of lupane (0.3, 0.7, 1.5, 6, 3 and 12 μg/mL). The cell function was assessed by the production of TNF-α and IL-10 by PBMCs quantified by specific enzyme immunoassay (ELISA). The activity of topoisomerases was assayed by in vitro biological assays and in silico molecular docking.
Results: The results obtained showed that lupane at concentrations below 1.5 μg/mL was not toxic to the cells. Moreover, lupane was not able to activate cellular functions and did not alter the production of IL-10 and TNF-α. Furthermore, the data showed that lupane has neither interfered in the action of topoisomerase I nor in the action of topoisomerase II.
Conclusion: Based on preclinical results obtained in this study, we highlight that the compound studied (lupane) has moderate cytotoxicity, does not induce the production of TNF-α and IL-10, and does not act on human topoisomerases. Based on the results of this study and taking into consideration the reports about the anti-inflammatory and leishmanicidal activity of 3β, 6β, 16β-trihydroxylup-20(29)-ene, we suggest that this compound may serve as a biotechnological tool for the treatment of leishmaniasis in the future.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4659216 | PMC |
| http://dx.doi.org/10.1186/s12906-015-0948-1 | DOI Listing |
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