HMGA1 silencing reduces stemness and temozolomide resistance in glioblastoma stem cells.
Expert Opin Ther Targets
; 20(10): 1169-79, 2016 10.
Article
em En
| MEDLINE
| ID: mdl-27486901
ABSTRACT
OBJECTIVE:
Glioblastoma multiforme (GBM) develops from a small subpopulation of stem-like cells, which are endowed with the ability to self-renew, proliferate and give rise to progeny of multiple neuroepithelial lineages. These cells are resistant to conventional chemo- and radiotherapy and are hence also responsible for tumor recurrence. HMGA1 overexpression has been shown to correlate with proliferation, invasion, and angiogenesis of GBMs and to affect self-renewal of cancer stem cells from colon cancer. The role of HMGA1 in GBM tumor stem cells is not completely understood. RESEARCH DESIGN ANDMETHODS:
We have investigated the role of HMGA1 in brain tumor stem cell (BTSC) self-renewal, stemness and resistance to temozolomide by shRNA- mediated HMGA1 silencing.RESULTS:
We first report that HMGA1 is overexpressed in a subset of BTSC lines from human GBMs. Then, we show that HMGA1 knockdown reduces self-renewal, sphere forming efficiency and stemness, and sensitizes BTSCs to temozolomide. Interestingly, HMGA1 silencing also leads to reduced tumor initiation ability in vivo.CONCLUSIONS:
These results demonstrate a pivotal role of HMGA1 in cancer stem cell gliomagenesis and endorse HMGA1 as a suitable target for CSC-specific GBM therapy.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Células-Tronco Neoplásicas
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Neoplasias Encefálicas
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Glioblastoma
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Proteína HMGA1a
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article