Abstract
CD133+ cells in glioblastoma (GBM) display cancer stem cell-like properties and have been considered as the culprit of tumor recurrence, justifying exploration of potential therapeutic modalities targeting CD133+ cancer stem-like cells (CSCs). For photothermolysis studies, GBM-CD133+ and GBM-CD133- cells mixed with various ratios were challenged with single-walled carbon nanotubes (SWNTs) conjugated with CD133 monoclonal antibody (anti-CD133) and then irradiated with near-infrared laser light. Results show that GBM-CD133+ cells were selectively targeted and eradicated, whereas GBM-CD133- cells remained viable. In addition, in vitro tumorigenic and self-renewal capability of GBM-CD133+ treated with localized hyperthermia was significantly blocked. Furthermore, GBM-CD133+ cells pretreated with anti-CD133-SWNTs and irradiated by near-infrared laser 2 days after xenotransplantation in nude mice did not exhibit sustainability of CSC features for tumor growth. Taken altogether, our studies demonstrated that anti-CD133-SWNTs have the potential to be utilized as a thermal-coupling agent to effectively target and destroy GBM CSCs in vitro and in vivo. From the Clinical Editor: Glioblastoma remains one of the most notorious cancer from the standpoint of recurrence and overall resistance to therapy. CD133+ stem cells occur among GBM cells, and may be responsible for the huge recurrence risk. This paper discusses a targeted elimination method of these cells, which may enable more efficient therapy in an effort to minimize or prevent recurrence.
Original language | English |
---|---|
Pages (from-to) | 69-79 |
Number of pages | 11 |
Journal | Nanomedicine: Nanotechnology, Biology, and Medicine |
Volume | 7 |
Issue number | 1 |
DOIs | |
State | Published - Feb 2011 |
Keywords
- CD133
- Cancer stem-like cells
- Glioblastoma
- Near-infrared laser
- Single-walled carbon nanotubes