Comparative analysis of thioflavin T and other fluorescent dyes for fluorescent staining of Bacillus subtilis vegetative cell, sporulating cell, and mature spore.
Biosci Biotechnol Biochem
; 87(3): 338-348, 2023 Feb 24.
Article
en En
| MEDLINE
| ID: mdl-36472554
ABSTRACT
Thioflavin T, a cationic benzothiazole dye, is typically used to detect amyloid fibrils. In this study, we analyzed the staining properties of Bacillus subtilis cells using several fluorescent dyes, including thioflavin T analogs, 2-(4'-methylaminophenyl) benzothiazole (BTA-1), and 2-(4-aminophenyl) benzothiazole (APBT). Thioflavin T stained vegetative cells in the early log phase and outer layer structures of forespores and mature spores. The inner parts of forespores and heat-killed mature spores were also stained with thioflavin T. Congo red, auramine O, and rhodamine B stained forespores and mature spores similar to thioflavin T. In contrast, APBT and BTA-1 fluorescence was detected in the outer layers of vegetative cells, mother cells, forespores, and mature spores, indicating that they bind to the cell membrane and/or cell wall. The combination of the fluorescent dyes used in this study will help analyze morphogenetic processes during the sporulation and the damage mechanisms of vegetative cells and spores.
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Base de datos:
MEDLINE
Asunto principal:
Esporas Bacterianas
/
Bacillus subtilis
Idioma:
En
Revista:
Biosci Biotechnol Biochem
Asunto de la revista:
BIOQUIMICA
/
BIOTECNOLOGIA
Año:
2023
Tipo del documento:
Article
País de afiliación:
Japón