Glioblastoma multiforme (GBM) is the most common malignant brain tumor in
adults, with a very short survival period of less than 15 months on average. This
low survival rate is largely due to the difficulty of treatment of GBM, and no special
treatmen...
Glioblastoma multiforme (GBM) is the most common malignant brain tumor in
adults, with a very short survival period of less than 15 months on average. This
low survival rate is largely due to the difficulty of treatment of GBM, and no special
treatment method has yet been developed. In conventional chemotherapy, the
delivery of drugs is limited due to the blood-brain barrier (BBB), causing side
effects to normal tissues along with effective treatment difficulties. Therefore, an
approach using microbubbles and cavitation by ultrasonic waves that can increase
the efficiency of drug delivery by temporarily opening BBB is drawing attention.
In this study, microbubbles were produced, and the structure of microbubbles
microscope was used to verify that the drug was capsulated inside the
microbubbles. In addition, electrophoresis experiments proved that the siRNA
capsulated inside the microbubbles is effectively protected against RNase, and
when ultrasonic waves are irradiated, it was confirmed that the siRNA inside is
released. Through this, it was confirmed that the microbubbles produced have
usefulness as drug carriers.
In addition, in this study, doxorubicin was capsulated inside microbubbles and
animal experiments were conducted using it. As a result of the experiment, drug
delivery using microbubbles showed a significant decrease in tumor volume
growth rate. These results showed the potential of our synthesized microbubbles
as a promising drug carrier in the treatment of glioblastoma.
Therefore, this study suggested the possibility of microbubbles that can be
used as drug carriers in GBM treatment. This approach can present a new strategy
that simultaneously achieves effective delivery of drugs and reduction of side
effects, and open up new hopes for GBM treatment. It is necessary to evaluate
the practicality and clinical applicability of these drug carriers through more
experiments and clinical studies.
was analyzed using an electron transmission microscope (TEM) to confirm that
there was sufficient space for drugs to be capsulated inside. In addition, a confocal