Characterization of the Subcellular Distribution of Phospho-ß-catenin in Colorectal Cancer.
In Vivo
; 37(4): 1576-1583, 2023.
Article
en En
| MEDLINE
| ID: mdl-37369481
ABSTRACT
BACKGROUND/AIM:
ß-Catenin is a multifunctional protein, which is localized to different subcellular compartments of the normal colon epithelium. The hyperactivation of Wnt pathway results in the nuclear accumulation of ß-catenin and induction of colorectal carcinogenesis. Although N-terminally hypo-phosphorylated ß-catenin (active ß-catenin) is known as the transcriptionally active form, phospho-S33/S37/T41-ß-catenin (phospho-ß-catenin) can also accumulate in the nucleus. In this study, we aimed to characterize the subcellular distribution of phospho-ß-catenin and the other forms of ß-catenin in normal colon epithelium and colorectal cancer (CRC). MATERIALS ANDMETHODS:
Phosphorylated, hypo-phosphorylated, and the total pool of ß-catenin were evaluated in colon epithelium and CRC using immunohistochemistry, immunofluorescence staining, and western blotting. Tissue microarrays were used to determine the expression pattern of phospho-ß-catenin in CRC samples.RESULTS:
Almost 11% (49/452) of CRCs expressed moderate to high levels of phospho-ß-catenin in the nucleus. In addition, hypo-phosphorylated and phosphorylated forms of ß-catenin localized to different subcellular regions in normal colon epithelium and CRC. Immunoblotting experiments suggested that truncated phospho-ß-catenin forms can be found in CRCs.CONCLUSION:
Phospho-ß-catenin accumulates in the nucleus and different molecular weight ß-catenin proteins are present in colon cancer cells. To elaborate on the functional significance of nuclear phospho-ß-catenin, further studies should be performed.Palabras clave
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Base de datos:
MEDLINE
Asunto principal:
Neoplasias Colorrectales
/
Neoplasias del Colon
Límite:
Humans
Idioma:
En
Revista:
In Vivo
Asunto de la revista:
NEOPLASIAS
Año:
2023
Tipo del documento:
Article
País de afiliación:
Turquía