Protozoans

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    Protocols in Current Issue
    Quantification of Nitric Oxide and Reactive Oxygen Species in Leishmania-infected J774A.1 Macrophages as a Response to the in vitro Treatment with a Natural Product Compound
    Authors:  Kalliopi Karampetsou, Olga S. Koutsoni and Eleni Dotsika, date: 12/05/2019, view: 37, Q&A: 0
    Leishmaniasis is a parasitic disease caused by the obligatory intracellular protozoa Leishmania spp. Current therapeutic options are limited and thus, drug discovery against leishmaniasis is very important. Nevertheless, there is a great ...
    Quantification of Nitric Oxide and Reactive Oxygen Species in Leishmania-infected J774A.1 Macrophages as a Response to the in vitro Treatment with a Natural Product Compound
    Authors:  Kalliopi Karampetsou, Olga S. Koutsoni and Eleni Dotsika, date: 12/05/2019, view: 37, Q&A: 0
    [Abstract] Leishmaniasis is a parasitic disease caused by the obligatory intracellular protozoa Leishmania spp. Current therapeutic options are limited and thus, drug discovery against leishmaniasis is very important. Nevertheless, there is a great difficulty to develop therapeutic strategies against the disease because the parasite deploys various ...
    Leishmania Parasite Quantification by Bioluminescence in Murine Models
    Authors:  Marta Reverte and Nicolas Fasel, date: 11/20/2019, view: 182, Q&A: 0
    [Abstract] Leishmaniasis remains a major public health problem worldwide with a prevalence of 12 million, an incidence of 1 million persons, and 350 million people being at risk. Murine models have been largely used for studying the host-pathogen relationship and developing effective chemotherapies against Leishmania parasites. Thus, preclinical ...
    In vitro Screening of Antileishmanial Activity of Natural Product Compounds: Determination of IC50, CC50 and SI Values
    Authors:  Olga S. Koutsoni, Kalliopi Karampetsou and Eleni Dotsika, date: 11/05/2019, view: 210, Q&A: 0
    [Abstract] Neglected tropical diseases gain the scientific interest of numerous research programs in an attempt to achieve their effective control or elimination. In this attempt, more cutting-edge public health policies and research are needed for the discovery of new, safer and effective drugs originated from natural products. Here, we describe protocols ...
    Measurement of Acid Ecto-phosphatase Activity in Live Leishmania donovani Parasites
    Authors:  Amalia Papadaki and Haralabia Boleti, date: 10/05/2019, view: 291, Q&A: 0
    [Abstract] Acid ecto-phosphatases are enzymes that hydrolyze phosphomonoesters in the acidic pH range with their active sites facing the extacellular medium. Their activities can be measured in living cells. In bacteria and protozoan pathogens, acid ecto-phosphatases have been associated with the survival of intracellular pathogens within phagocytes through ...
    Eimeria vermiformis Infection Model of Murine Small Intestine
    Authors:  Patrícia Figueiredo-Campos, Cristina Ferreira, Birte Blankenhaus and Marc Veldhoen, date: 12/20/2018, view: 1489, Q&A: 0
    [Abstract] Eimeria vermiformis is a tissue specific, intracellular protozoan that infects the murine small intestinal epithelia, which has been widely used as a coccidian model to study mucosal immunology. This mouse infection model is valuable to investigate the mechanisms of host protection against primary and secondary infection in the small ...
    Analysis of DNA Exchange Using Thymidine Analogs (ADExTA) in Trypanosoma cruzi
    [Abstract] Trypanosoma cruzi is a protozoan parasite belonging to the Trypanosomatidae family. Although the trypanosomatids multiply predominantly by clonal generation, the presence of DNA exchange in some of them has been puzzling researchers over the years, mainly because it may represent a novel form that these organisms use to gain variability. ...
    Long-term in vitro Culture of Cryptosporidium parvum
    Authors:  Nigel Yarlett and Mary Morada, date: 08/05/2018, view: 2756, Q&A: 0
    [Abstract] Continuous in vitro growth of Cryptosporidium parvum has proved difficult and conventional in vitro culture techniques result in short-term (2-5 days) growth of the parasite resulting in thin-walled oocysts that fail to propagate using in vitro cultures, and do not produce an active infection using ...
    CRISPR-mediated Tagging with BirA Allows Proximity Labeling in Toxoplasma gondii
    Authors:  Shaojun Long, Kevin M. Brown and L. David Sibley, date: 03/20/2018, view: 5230, Q&A: 0
    [Abstract] Defining protein interaction networks can provide key insights into how protein complexes govern complex biological problems. Here we define a method for proximity based labeling using permissive biotin ligase to define protein networks in the intracellular parasite Toxoplasma gondii. When combined with CRISPR/Cas9 based tagging, this ...
    Conditional Knockdown of Proteins Using Auxin-inducible Degron (AID) Fusions in Toxoplasma gondii
    Authors:  Kevin M. Brown, Shaojun Long and L. David Sibley, date: 02/20/2018, view: 7130, Q&A: 0
    [Abstract] Toxoplasma gondii is a member of the deadly phylum of protozoan parasites called Apicomplexa. As a model apicomplexan, there is a great wealth of information regarding T. gondii’s 8,000+ protein coding genes including sequence variation, expression, and relative contribution to parasite fitness. However, new tools are needed to ...
    MicroScale Thermophoresis as a Tool to Study Protein-peptide Interactions in the Context of Large Eukaryotic Protein Complexes
    Authors:  Maximilian G. Plach, Klaus Grasser and Thomas Schubert, date: 12/05/2017, view: 11304, Q&A: 0
    [Abstract] Protein-peptide interactions are part of many physiological processes, for example, epigenetics where peptide regions of histone complexes are crucial for regulation of chromatin structure. Short peptides are often also used as alternatives to small molecule drugs to target protein complexes. Studying the interactions between proteins and peptides ...



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