Neurological disorders and diseases of the brain are increasingly prevalent health concerns due to an aging population, increased awareness of long term effects of traumatic brain injury, and incidence of brain cancer. Treating the brain presents a unique challenge for due to the delicate nature of the tissue and privileged environment due to the blood-brain barrier. Drug delivery systems have been used to ferry drugs to the brain and central nervous system (CNS), however cerebrospinal fluid (CSF) turnover can rapidly clear drugs from the CNS and reduce treatment efficacy. This proposal will explore strategies to locally deliver drugs to the brain and reduce drug efflux by modulating CSF production. This proposal will test the hypothesis that CSF dynamics affect drug exposure in the CNS. During the mentored phase, I will learn device fabrication techniques and develop drug delivery micro devices capable of locally delivering multiple compounds into the brain parenchyma. Development of these devices is necessary, as many drugs do not efficiently cross into the brain when administered systemically. I will use these devices and in vivo imaging techniques to quantify how CSF-modulating drugs such as acetazolamide affect drug distribution and exposure. The data and skills acquired during the mentored phase will lead to the evaluation of CSF-modulating drug delivery systems in rodent models of brain cancer during the independent phase of this grant. During the independent phase, I will combine my background in chemistry and animal models of disease with newly learned fabrication expertise and explore the relationship between reducing CSF efflux of drugs and treatment efficacy in rodent models of brain disease. I will test the effectiveness of these drug delivery systems using rodent models of brain cancer and design new, molecular delivery vehicles. This line of research will lead to more effective ways to treat brain cancers, neurodegenerative diseases, and other diseases of the brain.

Public Health Relevance

Neurological disorders and diseases of the brain are difficult to treat since drugs fail to reach high concentrations in the brain and are rapidly cleared. This grant proposes the development of two micro scale drug delivery devices that can be implanted in the brain and modulate how drugs are cleared from the brain.

Agency
National Institute of Health (NIH)
Institute
National Institute of Biomedical Imaging and Bioengineering (NIBIB)
Type
Career Transition Award (K99)
Project #
1K99EB016690-01
Application #
8488103
Study Section
Special Emphasis Panel (ZEB1-OSR-B (J2))
Program Officer
Erim, Zeynep
Project Start
2013-08-01
Project End
2015-07-31
Budget Start
2013-08-01
Budget End
2014-07-31
Support Year
1
Fiscal Year
2013
Total Cost
$90,318
Indirect Cost
$6,690
Name
Massachusetts Institute of Technology
Department
Internal Medicine/Medicine
Type
Schools of Arts and Sciences
DUNS #
001425594
City
Cambridge
State
MA
Country
United States
Zip Code
02139
Cima, Michael J; Lee, Heejin; Daniel, Karen et al. (2014) Single compartment drug delivery. J Control Release 190:157-71