Abstract
Statins exhibit anticancer pleiotropic effects, such as the induction tumor-specific apoptosis and the promotion antitumor immunity. However, due to low bioavailability, high doses are required to trigger such antitumor effects. In this study, an oral delivery system to improve bioavailability of simvastatin (SIMVA) is prepared and its application in combination with an oral anticancer formulation is investigated. A colloidal dispersion (CD) of SIMVA is prepared using Nα-deoxycholyl-l-lysyl-methylester (DL) to enhance a solubility and permeation (SIMVA/DL-CD). Preparation of SIMVA/DL-CD markedly increases the solubility and in vitro artificial membrane permeability of SIMVA by 291- and 4.68-fold, respectively, compared to SIMVA in 5% dimethyl sulfoxide. The oral absorption of SIMVA/DL-CD (20 mg kg−1 SIMVA) is significantly enhanced and its oral bioavailability is tenfold higher compared to that of free SIMVA. An in vivo study in CT26 tumor-bearing mice receiving SIMVA/DL-CD reveals substantial tumor growth suppression through upregulated anticancer immunity. In particular, the combination of oral SIMVA/DL-CD and oxaliplatin powder formulation elicits considerable tumor-suppressive effects and CD8+ T cell immunity. Furthermore, this combination therapy sensitizes antiprogramed cell death protein-1 monoclonal antibody-resistant tumors to checkpoint blockade. The current findings highlight the therapeutic potential of oral SIMVA/DL-CD as an effective anticancer immunotherapy.
Original language | English |
---|---|
Article number | 2100025 |
Journal | Advanced Therapeutics |
Volume | 4 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2021 Aug |
Bibliographical note
Funding Information:S.AK., G.-h.N., and Y.R.B. contributed equally to this study. The authors thank the animal facility at KIST for the assistance, Labcore Inc. for FFPE preparation, PrismCDX for mIHC and image acquisition, and Wiley Editing Services for English language editing. The authors greatly appreciated using the Convergence Research Laboratory (established by the Mokpo National University Innovation Support Project in 2020) to conduct this research. This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government Ministry of Science and Information and Communication Technology (MSIT; Grant Nos. 2017R1A3B1023418 and 2020R1F1A1069889), by the KU-KIST School Project, and by the KIST Institutional Program.
Funding Information:
S.AK., G.‐h.N., and Y.R.B. contributed equally to this study. The authors thank the animal facility at KIST for the assistance, Labcore Inc. for FFPE preparation, PrismCDX for mIHC and image acquisition, and Wiley Editing Services for English language editing. The authors greatly appreciated using the Convergence Research Laboratory (established by the Mokpo National University Innovation Support Project in 2020) to conduct this research. This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government Ministry of Science and Information and Communication Technology (MSIT; Grant Nos. 2017R1A3B1023418 and 2020R1F1A1069889), by the KU‐KIST School Project, and by the KIST Institutional Program.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
Keywords
- colloidal dispersion
- immunotherapy
- oral delivery
- oxaliplatin
- simvastatin
ASJC Scopus subject areas
- Medicine (miscellaneous)
- Pharmacology
- Pharmaceutical Science
- Genetics(clinical)
- Biochemistry, medical
- Pharmacology (medical)