Fluorescence lifetime imaging reveals heterogeneous functional distribution of eGFP expressed in Xenopus oocytes.
Methods Appl Fluoresc
; 8(1): 015001, 2019 Nov 13.
Article
em En
| MEDLINE
| ID: mdl-31658452
ABSTRACT
The oocytes from Xenopus laevis are well known for their polarity, presenting a distinct animal and vegetal pole. Other heterogeneities are less known. To study the heterogeneity of the Xenopus oocyte, we expressed eGFP and analyzed the protein distribution with fluorescence lifetime microscopy. The vegetal pole exhibited higher levels of fluorescence, than the animal pole. However, the fluorescence lifetimes between the two areas were indistinguishable, suggesting similar environments. In contrast, we observed a substantial and gradual decrease in the fluorescence lifetime from 2.9 ns to 2.6 ns as slices approached the periphery. This has an important implication for future oocyte studies as it demonstrates the environment inside the oocyte is not uniform and might affect the fluorescence intensity. As a result, it cannot be assumed that the observed fluorescence intensity reflects the expression of the proteins but might reflect the environment within the oocyte.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Fluorescência Verde
/
Imagem Óptica
Limite:
Animals
Idioma:
En
Revista:
Methods Appl Fluoresc
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Estados Unidos