Analogues of Marine Guanidine Alkaloids Are in Vitro Effective against Trypanosoma cruzi and Selectively Eliminate Leishmania (L.) infantum Intracellular Amastigotes

Ligia F. Martins, Juliana T. Mesquita, Erika G. Pinto, Thais A. Costa-Silva, Samantha E. T. Borborema, Andres J. Galisteo Junior, Bruno J. Neves, Carolina H. Andrade, Elliot Bennett, Gregory Black, Philip Harper, Daniel Evans, Hisham Fituri, John P. Leyland, Claire Martin, Terence Roberts, Andrew J. Thornhill, Steven Vale, Andrew Howard-Jones, Dafydd ThomasHarri L. Williams, Larry Overman, Roberto Berlinck, Patrick Murphy, Andre Tempone

    Research output: Contribution to journalArticlepeer-review

    309 Downloads (Pure)

    Abstract

    ABSTRACT: Synthetic analogues of marine sponge guanidine
    alkaloids showed in vitro antiparasitic activity against
    Leishmania (L.) infantum and Trypanosoma cruzi. Guanidines
    10 and 11 presented the highest selectivity index when tested
    against Leishmania. The antiparasitic activity of 10 and 11 was
    investigated in host cells and in parasites. Both compounds
    induced depolarization of mitochondrial membrane potential,
    upregulation of reactive oxygen species levels, and increased
    plasma membrane permeability in Leishmania parasites.
    Immunomodulatory assays suggested an NO-independent
    effect of guanidines 10 and 11 on macrophages. The same
    compounds also promoted anti-inflammatory activity in L. (L.)
    infantum-infected macrophages cocultived with splenocytes,
    reducing the production of cytokines MCP-1 and IFN-γ.
    Guanidines 10 and 11 affect the bioenergetic metabolism of Leishmania, with selective elimination of parasites via a hostindependent
    mechanism.
    Original languageEnglish
    Pages (from-to)2202-2210
    Number of pages9
    JournalJournal of natural products
    Volume79
    Issue number9
    Early online date2 Sept 2016
    DOIs
    Publication statusPublished - 16 Sept 2016

    Fingerprint

    Dive into the research topics of 'Analogues of Marine Guanidine Alkaloids Are in Vitro Effective against Trypanosoma cruzi and Selectively Eliminate Leishmania (L.) infantum Intracellular Amastigotes'. Together they form a unique fingerprint.

    Cite this