Por favor, use este identificador para citar o enlazar este ítem:
https://www.arca.fiocruz.br/handle/icict/24720
Tipo
ArtículoDerechos de autor
Acceso abierto
Objetivos de Desarrollo Sostenible
10 Redução das desigualdadesColecciones
Metadatos
Mostrar el registro completo del ítem
PHENOTYPIC DIVERSITY AND SELECTION MAINTAIN LEISHMANIA AMAZONENSIS INFECTIVITY IN BALB/C MOUSE MODEL
Subclonagem
Diversidade fenotípica
Infecciosidade
Seleção
Subcloning
Phenotypic diversity
Infectivity
Selection
Autor
Afiliación
Université de Bordeaux. Laboratoire de Génomique Fonctionnelle des Trypanosomatidés. Bordeaux, France / LabEx Corail. Papetoai, Moorea, Polynésie Française
Fundação Oswaldo Cruz. Instituto Gonçalo Moniz. Salvador, BA, Brasil / Faculdade Anhanguera de Brasília. Brasília, DF, Brasil
Université de Bordeaux. Laboratoire de Génomique Fonctionnelle des Trypanosomatidés. Bordeaux, France / B Cell Design. Limoges, France
Fundação Oswaldo Cruz. Instituto Gonçalo Moniz. Salvador, BA, Brasil / Instituto de Investigação em Imunologia. Salvador, BA, Brasil
Université de Bordeaux. Laboratoire de Génomique Fonctionnelle des Trypanosomatidés. Bordeaux, France / B Cell Design. Limoges, France
Fundação Oswaldo Cruz. Instituto Gonçalo Moniz. Salvador, BA, Brasil / Faculdade Anhanguera de Brasília. Brasília, DF, Brasil
Université de Bordeaux. Laboratoire de Génomique Fonctionnelle des Trypanosomatidés. Bordeaux, France / B Cell Design. Limoges, France
Fundação Oswaldo Cruz. Instituto Gonçalo Moniz. Salvador, BA, Brasil / Instituto de Investigação em Imunologia. Salvador, BA, Brasil
Université de Bordeaux. Laboratoire de Génomique Fonctionnelle des Trypanosomatidés. Bordeaux, France / B Cell Design. Limoges, France
Resumen en ingles
Leishmania are protozoan parasites that show remarkable diversity, as revealed by the various clinical forms of leishmaniasis, which can range from mild skin lesions to severe metastatic cutaneous/mucosal lesions. The exact nature and extent of Leishmania phenotypic diversity in establishing infection is not fully understood. In order to try to understand some aspects of this diversity, we subcutaneously infected BALB/c mice with first and second generation subclones of a L. amazonensis strain isolated from a patient (BA125) and examined in vivo lesion growth rate and antimony susceptibility. In vivo fast-, medium- and slow-growing subclones were obtained; moreover, fast-growing subclones could generate slow-growing subclones and inversely, revealing the continuous generation of diversity after passage into mice. No antimony-resistant subclone appeared, probably a rare occurrence. By tagging subclone cells with a L. amazonensis genomic cosmid library, we found that only a very small number of founding cells could produce lesions. Leishmania clones transfected with in vivo selected individual cosmids were also diverse in terms of lesion growth rate, revealing the cosmid-independent intrinsic characteristics of each clone. Our results suggest that only a few of the infecting parasites are able to grow and produce lesions; later, within the cell mixture of each lesion, there coexist several parasite populations with different potentialities to grow lesions during the next infection round. This may reflect a sort of programmed heterogeneity of individual parasites, favoring the survival of some individuals in various environmental conditions.
Palabras clave en portugues
Leishmania amazonensisSubclonagem
Diversidade fenotípica
Infecciosidade
Seleção
Palabras clave en ingles
Leishmania amazonensisSubcloning
Phenotypic diversity
Infectivity
Selection
Compartir