DOI
https://doi.org/10.25772/P3KH-2875
Author ORCID Identifier
https://orcid.org/0000-0002-5486-183X
Defense Date
2020
Document Type
Dissertation
Degree Name
Doctor of Philosophy
Department
Chemical and Life Science Engineering
First Advisor
Christina Tang
Second Advisor
Thomas Roper
Third Advisor
Hu Yang
Fourth Advisor
Christopher Lemmon
Fifth Advisor
Jessika Rojas
Abstract
Taxol, a formulation of paclitaxel (PTX), is one of the most widely used anticancer drugs, particularly for treating recurring ovarian carcinomas following surgery. Clinically, PTX is used in combination with other drugs such as lapatinib (LAP) to increase treatment efficacy. Delivering drug combinations with nanoparticles has the potential to improve chemotherapy outcomes. In this study, we use Flash NanoPrecipitation, a rapid, scalable process to encapsulate weakly hydrophobic drugs (logP in vitro. Encapsulating either PTX or LAP into nanoparticles increases drug potency. When PTX and LAP are co-loaded in the same nanoparticle, they have a synergistic effect that is greater than treating with two single-drug loaded nanoparticles. Furthermore, we examined in vitro sequential delivery of PTX and LAP encapsulated into polymer nanoparticles on ovarian cancer cells. We observed a sequence-dependent cytotoxic effect. These results are promising for establishing sequential drug delivery with nanoparticles as a method for treating ovarian cancer. Building on this work, we demonstrated the potential of encapsulating a hydrophobic PTX prodrug into pH-responsive nanoparticles as a method to enhance drug efficacy and control drug release. Overall, these findings provide the foundation for developing co-encapsulated nanoparticles with controlled drug release as well as methods for improving the drug efficacy of PTX.
Rights
© Shani L. Levit
Is Part Of
VCU University Archives
Is Part Of
VCU Theses and Dissertations
Date of Submission
5-12-2020
Included in
Nanomedicine Commons, Nanoscience and Nanotechnology Commons, Other Biomedical Engineering and Bioengineering Commons, Other Chemical Engineering Commons, Polymer Science Commons, Transport Phenomena Commons