Characterization of sphere-forming HCT116 clones by whole RNA sequencing
Annals of Surgical Treatment and Research
;
: 183-193, 2016.
Artigo
em Inglês
| WPRIM
| ID: wpr-109194
ABSTRACT
PURPOSE:
To determine CD133+ cells defined as cancer stem cells (CSCs) in colon cancer, we examined whether CD133+ clones in HCT116 demonstrate known features of CSCs like sphere-forming ability, chemodrug-resistance, and metastatic potential.METHODS:
Magnetic cell isolation and cell separation demonstrated that <1% of HCT116 cells expressed CD133, with the remaining cells being CD133- clones. In colon cancer cells, radioresistance is also considered a CSC characteristic. We performed clonogenic assay using 0.4 Gy γ-irradiation.RESULTS:
Interestingly, there were no differences between HCT116 parental and HCT116 CD133+ clones when the cells comprised 0.5% of the total cells, and CD133- clone demonstrated radiosensitive changes compared with parental and CD133+ clones. Comparing gene expression profiles between sphere-forming and nonforming culture conditions of HCT116 subclones by whole RNA sequencing failed to obtain specific genes expressed in CD133+ clones.CONCLUSION:
Despite no differences of gene expression profiles in monolayer attached culture conditions of each clone, sphere-forming conditions of whole HCT116 subclones, parental, CD133+, and CD133- increased 1,761 coding genes and downregulated 1,384 genes related to CSCs self-renewal and survival. Thus, spheroid cultures of HCT116 cells could be useful to expand colorectal CSCs rather than clonal expansion depending on CD133 expressions.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Pais
/
Células-Tronco Neoplásicas
/
RNA
/
Separação Celular
/
Células Clonais
/
Análise de Sequência de RNA
/
Neoplasias do Colo
/
Células HCT116
/
Codificação Clínica
/
Transcriptoma
Limite:
Humanos
Idioma:
Inglês
Revista:
Annals of Surgical Treatment and Research
Ano de publicação:
2016
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS