Development of nine microsatellite loci for Trypanosoma lewisi, a potential human pathogen in Western Africa and South-East Asia, and preliminary population genetics analyses

Autor: Adeline Ségard, Audrey Romero, Sophie Ravel, Philippe Truc, Gauthier Dobigny, Philippe Gauthier, Jonas Etougbetche, Henri-Joel Dossou, Sylvestre Badou, Gualbert Houéménou, Serge Morand, Kittipong Chaisiri, Camille Noûs, Thierry de Meeûs
Přispěvatelé: Interactions hôtes-vecteurs-parasites-environnement dans les maladies tropicales négligées dues aux trypanosomatides (UMR INTERTRYP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université de Bordeaux (UB), Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM), Ecole Polytechnique d'Abomey Calavi (EPAC), Université d’Abomey-Calavi = University of Abomey Calavi (UAC), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Université de Montpellier (UM), Kasetsart University (KU), Mahidol University [Bangkok], Laboratoire Cogitamus, This work was mainly funded by the French Institute for Research and Development (IRD) from UMR Intertryp and UMR CBGP recurrent dotations. It was also part of French ANR funded projects CEROPATH (ANR-07-BDIV-0012) and FutureHealthSEA (ANR-17-CE35-0003)., ANR-07-BDIV-0012,CEROPATH,Ecologie des communautés rongeurs - pathogènes en Asie du Sud-Est : effets des changements de biodiversité et implications pour l'écologie de la santé(2007), ANR-17-CE35-0003,FutureHealthSEA,Scénarios de la santé en Asie du Sud-Est: changements d'utilisation des terres, changement climatique et maladies infectieuses(2017)
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Peer Community Journal
Peer Community Journal, 2022, 2, pp.e69. ⟨10.24072/pcjournal.188⟩
ISSN: 2804-3871
Popis: Primer sequences and raw data are available in the supplementary file S1 at: https://doi.org/10.5281/zenodo.6460010. Samples and associated data were deposited in the Small Mammal Collection at the IRD/CBGP (https://doi.org/10.15454/WWNUPO) as well as at URIB/LARBA/EPAC and Kasetsart University (Thailand). They are available upon request.Preprint version 3 of this article has been peer-reviewed and recommended by Peer Community InInfections.; Trypanosoma lewisi belongs to the so-called atypical trypanosomes that occasionally affect humans. It shares the same hosts and flea vector of other medically relevant pathogenic agents as Yersinia pestis, the agent of plague. Increasing knowledge on the population structure (reproductive mode, population size, dispersal) of this parasite thus represents a challenging but important issue. The use of polymorphic genetic markers, together with suitable population genetics tools, is a convenient way to achieve such objectives. To date, the population biology of T. lewisi is poorly known and, to our knowledge, no population genetics studies have ever been conducted. Here, we present the development of nine microsatellite markers of this species. We investigated their polymorphism in different countries from Africa and South-East Asia from DNAs extracted from the spleen of their rodent reservoirs (essentially rat species). Several amplification problems arose, especially with South-East Asian individuals. This led to retain only those individuals with complete genotypes (most of them originating from West Africa, notably Cotonou, Benin) to ensure an optimal estimate of heterozygosity. Our results pointed towards a mainly (at least 95-99%) clonal mode of propagation, a strong subdivision at the smallest scale available (i.e., urban neighborhoods, i.e. 0.250 km²), and a generation time most probably shorter than 4 months. In future studies, more extensive sampling at smaller geographic scales (i.e., households), within a one- or two-months window and with improved amplification conditions, should lead to a more precise picture of the fine population structure of this parasite.
Databáze: OpenAIRE
Externí odkaz: