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Nano drug crosses blood-brain tumor barrier, targets brain-tumor cells and blood vessels
Date:7/17/2013

e an important treatment for glioblastoma and other solid tumors."

The findings were published in a recent issue of the journal Molecular Therapy.

SapC-DOPS (saposin-C dioleoylphosphatidylserine), is a nanovesicle drug that has shown activity in glioblastoma, pancreatic cancer and other solid tumors in preclinical studies. The nanovesicles fuse with tumor cells, causing them to self-destruct by apoptosis.

Key findings of the study, which used two brain-tumor models, include:

  • SapC-DOPS binds with exposed patches of the phospholipid phosphatidylserine (PtdSer) on the surface of tumor cells;
  • Blocking PtdSer on cells inhibited tumor targeting;
  • SapC-DOPS strongly inhibited brain-tumor blood-vessel growth in cell and animal models, probably because these cells also have high levels of exposed PtdSer.
  • Hypoxic cells were sensitized to killing by SapC-DOPS.

"Based on our findings, we speculate that SapC-DOPS could have a synergistic effect when combined with chemotherapy or radiation therapy, both of which are known to increase the levels of exposed PtdSer on cancer cells," Kaur says.


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Contact: Darrell E. Ward
Darrell.Ward@osumc.edu
614-293-3737
Ohio State University Medical Center
Source:Eurekalert

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