Clinical and morphological features of large-cell neuroendocrine carcinomas and small-cell lung carcinomas expressing the DLL3 and ASCL1 oncoproteins
Braz. j. med. biol. res
; 56: e12921, 2023. tab, graf
Artículo
en Inglés
|
LILACS-Express
| LILACS
| ID: biblio-1528094
Biblioteca responsable:
BR1.1
ABSTRACT
Abstract Intratumoral similarities and differences between large-cell neuroendocrine carcinomas (LCNECs) and small-cell lung carcinomas (SCLCs) are determined partially by the Notch signaling pathway, which controls the switch from neuroendocrine to slight/non-neuroendocrine cell fate. LCNECs are divided into two subgroups according to genomic alterations: type I LCNECs exhibit a neuroendocrine profile characterized by achaete‐scute homolog 1 (ASCL1)high/delta-like protein 3 (DLL3)high/NOTCHlow and type II LCNECs show the pattern ASCL1low/DLL3low/NOTCHhigh. Here, we used immunohistochemistry, transmission electron microscopy, and digital analysis to examine the role of the Notch ligand DLL3 as an immunomarker of the neuroendocrine state and ASCL1 as a regulator of cell-cell interactions in SCLCs and LCNECs. High DLL3 and ASCL1 expression was associated with atypical submicroscopic characteristics involving nuclear size, chromatin arrangement, Golgi apparatus, and endoplasmic reticulum, and was characteristic of type I LCNECs with similarity to SCLCs, whereas low DLL3 and ASCL1 expression was found in both SCLCs and type II LCNECs. In patients diagnosed at an early stage who did not have metastasis and who underwent chemotherapy, DLL3high and ASCL1high SCLCs and type I LCNECs were associated with a better prognosis and a lower risk of death. The present findings suggested that DLL3/ASCL1 are potential therapeutic targets and prognostic indicators in patients with SCLCs or LCNECs.
Texto completo:
Disponible
Colección:
Bases de datos internacionales
Contexto en salud:
ODS3 - Meta 3.4 Reducir las muertes prematuras por enfermedades no transmisibles
Problema de salud:
Neoplasias del Pulmón, Tráquea y Bronquios
Base de datos:
LILACS
Tipo de estudio:
Estudio pronóstico
Idioma:
Inglés
Revista:
Braz. j. med. biol. res
Asunto de la revista:
Biologia
/
Medicina
Año:
2023
Tipo del documento:
Artículo
/
Documento de proyecto
País de afiliación:
Brasil
Institución/País de afiliación:
AC Camargo Cancer Center/BR
/
Fundação Oncocentro do Estado de São Paulo/BR
/
Hospital de Câncer de Barretos/BR
/
Instituto do Coração, Faculdade de Medicina, Universidade de São Paulo/BR
/
Universidade de São Paulo/BR