Fluorescent nanoprobes based on quantum dots conjugated to Cramoll to assess surface carbohydrates of Aeromonas spp.
Biochim Biophys Acta Gen Subj
; 1867(7): 130373, 2023 07.
Article
en En
| MEDLINE
| ID: mdl-37137342
The association of quantum dots (QDs) to carbohydrate-binding proteins - lectins - has revealed novel biotechnological strategies for glycobiology studies. Herein, carboxyl-coated QDs were conjugated by adsorption to Cramoll, a glucose/mannose lectin obtained from Cratylia mollis seeds. Then, the conjugates were optically characterized and used to evaluate the surface carbohydrate profiles of four Aeromonas species isolated from the tambaqui fish (Colossoma macropomum). All the Aeromonas cells were labeled by the conjugate. Inhibition assays with methyl-α-D-mannopyranoside and mannan were performed to confirm the labeling specificity. Cramoll-QDs conjugates presented high brightness and showed similar absorption and emission profiles compared to bare QDs. According to the labeling pattern of Aeromonas spp. by the conjugate, results suggested that A. jandaei and A. dhakensis strains may harbor a higher content of more complex glucose/mannose surface glycans, with more available sites for Cramoll-QDs interaction, than A. hydrophila and A. caviae. Noteworthy, the Cramoll-QDs conjugates demonstrated to be potential tools for bacterial characterization based on superficial carbohydrate detection.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Aeromonas
/
Puntos Cuánticos
Límite:
Animals
Idioma:
En
Revista:
Biochim Biophys Acta Gen Subj
Año:
2023
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Países Bajos