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Shrestha P, Ghanwatkar Y, Mahto S, Pramanik N, Mahato RI. Gemcitabine-Lipid Conjugate and ONC201 Combination Therapy Effectively Treats Orthotopic Pancreatic Tumor-Bearing Mice. ACS APPLIED MATERIALS & INTERFACES 2024; 16:29686-29698. [PMID: 38813771 DOI: 10.1021/acsami.4c02626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Gemcitabine (GEM) is a nucleoside analogue approved as a first line of therapy for pancreatic ductal adenocarcinoma (PDAC). However, rapid metabolism by plasma cytidine deaminase leading to the short half-life, intricate intracellular metabolism, ineffective cell uptake, and swift development of chemoresistance downgrades the clinical efficacy of GEM. ONC201 is a small molecule that inhibits the Akt and ERK pathways and upregulates the TNF-related apoptosis-inducing ligand (TRAIL), which leads to the reversal of both intrinsic and acquired GEM resistance in PDAC treatment. Moreover, the pancreatic cancer cells that were able to bypass apoptosis after treatment of ONC201 get arrested in the G1-phase, which makes them highly sensitive to GEM. To enhance the in vivo stability of GEM, we first synthesized a disulfide bond containing stearate conjugated GEM (lipid-GEM), which makes it sensitive to the redox tumor microenvironment (TME) comprising high glutathione levels. In addition, with the help of colipids 1,2-dioleoyl-glycero-3-phosphocholine (DOPC), cholesterol, and 1,2-distearoyl-glycero-3-phosphoethanolamine-poly(ethylene glycol)-2000 (DSPE-PEG 2000), we were able to synthesize the lipid-GEM conjugate and ONC201 releasing liposomes. A cumulative drug release study confirmed that both ONC201 and GEM showed sustained release from the formulation. Since MUC1 is highly expressed in 70-90% PDAC, we conjugated a MUC1 binding peptide in the liposomes which showed higher cytotoxicity, apoptosis, and cellular internalization by MIA PaCa-2 cells. A biodistribution study further confirmed that the systemic delivery of the liposomes through the tail vein resulted in a higher accumulation of drugs in orthotopic PDAC tumors in NSG mice. The IHC of the excised tumor grafts further confirmed the higher apoptosis and lower metastasis and cell proliferation. Thus, our MUC1 targeting binary drug-releasing liposomal formulation showed higher drug payload, enhanced plasma stability, and accumulation of drugs in the pancreatic orthotopic tumor and thus is a promising therapeutic alternative for the treatment of PDAC.
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Affiliation(s)
- Prakash Shrestha
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Yashwardhan Ghanwatkar
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Sohan Mahto
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Nilkamal Pramanik
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
| | - Ram I Mahato
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
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Han X, Lai JHC, Huang J, Park SW, Liu Y, Chan KWY. Imaging Self-Healing Hydrogels and Chemotherapeutics Using CEST MRI at 3 T. ACS APPLIED BIO MATERIALS 2021; 4:5605-5616. [PMID: 35006724 DOI: 10.1021/acsabm.1c00411] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Imaging hydrogel-based local drug delivery to the brain after tumor resection has implications for refining treatments, especially for brain tumors with poor prognosis and high recurrence rate. Here, we developed a series of self-healing chitosan-dextran (CD)-based hydrogels for drug delivery to the brain. These hydrogels are injectable, self-healing, mechanically compatible, and detectable by chemical exchange saturation transfer magnetic resonance imaging (CEST MRI). CD hydrogels have an inherent CEST contrast at 1.1 ppm, which decreases as the stiffness increases. We further examined the rheological properties and CEST contrast of various chemotherapeutic-loaded CD hydrogels, including gemcitabine (Gem), doxorubicin, and procarbazine. Among these formulations, Gem presented the best compatibility with the rheological (G': 215.3 ± 4.5 Pa) and CEST properties of CD hydrogels. More importantly, the Gem-loaded CD hydrogel generated another CEST readout at 2.2 ppm (11.6 ± 0.1%) for monitoring Gem. This enabled independent and simultaneous imaging of the drug and hydrogel integrity using a clinically relevant 3 T MRI scanner. In addition, the Gem-loaded CD hydrogel exhibited a longitudinal antitumor efficacy of Gem over a week in vitro. Furthermore, the CD hydrogel could be visualized by CEST after brain injection with a contrast of 7.38 ± 2.31%. These natural labels on both the chemotherapeutics and hydrogels demonstrate unique image-guided local drug delivery for brain applications.
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Affiliation(s)
- Xiongqi Han
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong
| | - Joseph Ho Chi Lai
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong
| | - Jianpan Huang
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong
| | - Se Weon Park
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong
| | - Yang Liu
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong
| | - Kannie Wai Yan Chan
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon 999077, Hong Kong.,Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore MD21205, United States.,Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, China
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Matsumoto T, Komori T, Yoshino Y, Ioroi T, Kitahashi T, Kitahara H, Ono K, Higuchi T, Sakabe M, Kori H, Kano M, Hori R, Kato Y, Hagiwara S. A Liposomal Gemcitabine, FF-10832, Improves Plasma Stability, Tumor Targeting, and Antitumor Efficacy of Gemcitabine in Pancreatic Cancer Xenograft Models. Pharm Res 2021; 38:1093-1106. [PMID: 33961188 PMCID: PMC8217058 DOI: 10.1007/s11095-021-03045-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 04/15/2021] [Indexed: 01/02/2023]
Abstract
Purpose The clinical application of gemcitabine (GEM) is limited by its pharmacokinetic properties. The aim of this study was to characterize the stability in circulating plasma, tumor targeting, and payload release of liposome-encapsulated GEM, FF-10832. Methods Antitumor activity was assessed in xenograft mouse models of human pancreatic cancer. The pharmacokinetics of GEM and its active metabolite dFdCTP were also evaluated. Results In mice with Capan-1 tumors, the dose-normalized areas under the curve (AUCs) after FF-10832 administration in plasma and tumor were 672 and 1047 times higher, respectively, than after using unencapsulated GEM. The tumor-to-bone marrow AUC ratio of dFdCTP was approximately eight times higher after FF-10832 administration than after GEM administration. These results indicated that liposomal encapsulation produced long-term stability in circulating plasma and tumor-selective targeting of GEM. In mice with Capan-1, SUIT-2, and BxPC-3 tumors, FF-10832 had better antitumor activity and tolerability than GEM. Internalization of FF-10832 in tumor-associated macrophages (TAMs) was revealed by flow cytometry and confocal laser scanning microscopy, and GEM was efficiently released from isolated macrophages of mice treated with FF-10832. These results suggest that TAMs are one of the potential reservoirs of GEM in tumors. Conclusion This study found that FF-10832 had favorable pharmacokinetic properties. The liposomal formulation was more effective and tolerable than unencapsulated GEM in mouse xenograft tumor models. Hence, FF-10832 is a promising candidate for the treatment of pancreatic cancer. Supplementary Information The online version contains supplementary material available at 10.1007/s11095-021-03045-5.
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Affiliation(s)
- Takeshi Matsumoto
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan.
| | - Takashi Komori
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Yuta Yoshino
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Tadaaki Ioroi
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Tsukasa Kitahashi
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Hiromu Kitahara
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Kohei Ono
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Tamami Higuchi
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Masayo Sakabe
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Hiroshi Kori
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Masahiro Kano
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
| | - Ritsuko Hori
- Analysis Technology Center, FUJIFILM Corporation, Nakanuma 210, Minamiashigara, Kanagawa, 250-0193, Japan
| | - Yukio Kato
- Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa, 920-1192, Japan
| | - Shinji Hagiwara
- Bioscience and Engineering laboratories, FUJIFILM Corporation, 577 Ushijima, Kaisei-machi, Ashigarakami-gun, Kanagawa, 258-8577, Japan
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Di Francia R, Crisci S, De Monaco A, Cafiero C, Re A, Iaccarino G, De Filippi R, Frigeri F, Corazzelli G, Micera A, Pinto A. Response and Toxicity to Cytarabine Therapy in Leukemia and Lymphoma: From Dose Puzzle to Pharmacogenomic Biomarkers. Cancers (Basel) 2021; 13:cancers13050966. [PMID: 33669053 PMCID: PMC7956511 DOI: 10.3390/cancers13050966] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 01/04/2023] Open
Abstract
Simple Summary In this review, the authors propose a crosswise examination of cytarabine-related issues ranging from the spectrum of clinical activity and severe toxicities, through updated cellular pharmacology and drug formulations, to the genetic variants associated with drug-induced phenotypes. Cytarabine (cytosine arabinoside; Ara-C) in multiagent chemotherapy regimens is often used for leukemia or lymphoma treatments, as well as neoplastic meningitis. Chemotherapy regimens can induce a suboptimal clinical outcome in a fraction of patients. The individual variability in clinical response to Leukemia & Lymphoma treatments among patients appears to be associated with intracellular accumulation of Ara-CTP due to genetic variants related to metabolic enzymes. The review provides exhaustive information on the effects of Ara-C-based therapies, the adverse drug reaction will also be provided including bone pain, ocular toxicity (corneal pain, keratoconjunctivitis, and blurred vision), maculopapular rash, and occasional chest pain. Evidence for predicting the response to cytarabine-based treatments will be highlighted, pointing at their significant impact on the routine management of blood cancers. Abstract Cytarabine is a pyrimidine nucleoside analog, commonly used in multiagent chemotherapy regimens for the treatment of leukemia and lymphoma, as well as for neoplastic meningitis. Ara-C-based chemotherapy regimens can induce a suboptimal clinical outcome in a fraction of patients. Several studies suggest that the individual variability in clinical response to Leukemia & Lymphoma treatments among patients, underlying either Ara-C mechanism resistance or toxicity, appears to be associated with the intracellular accumulation and retention of Ara-CTP due to genetic variants related to metabolic enzymes. Herein, we reported (a) the latest Pharmacogenomics biomarkers associated with the response to cytarabine and (b) the new drug formulations with optimized pharmacokinetics. The purpose of this review is to provide readers with detailed and comprehensive information on the effects of Ara-C-based therapies, from biological to clinical practice, maintaining high the interest of both researcher and clinical hematologist. This review could help clinicians in predicting the response to cytarabine-based treatments.
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Affiliation(s)
- Raffaele Di Francia
- Italian Association of Pharmacogenomics and Molecular Diagnostics, 60126 Ancona, Italy;
| | - Stefania Crisci
- Hematology-Oncology and Stem Cell transplantation Unit, National Cancer Institute, Fondazione “G. Pascale” IRCCS, 80131 Naples, Italy; (S.C.); (G.I.); (R.D.F.); (G.C.); (A.P.)
| | - Angela De Monaco
- Clinical Patology, ASL Napoli 2 Nord, “S.M. delle Grazie Hospital”, 80078 Pozzuoli, Italy;
| | - Concetta Cafiero
- Medical Oncology, S.G. Moscati, Statte, 74010 Taranto, Italy
- Correspondence: or (C.C.); (A.M.); Tel.:+39-34-0101-2002 (C.C.); +39-06-4554-1191 (A.M.)
| | - Agnese Re
- Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
| | - Giancarla Iaccarino
- Hematology-Oncology and Stem Cell transplantation Unit, National Cancer Institute, Fondazione “G. Pascale” IRCCS, 80131 Naples, Italy; (S.C.); (G.I.); (R.D.F.); (G.C.); (A.P.)
| | - Rosaria De Filippi
- Hematology-Oncology and Stem Cell transplantation Unit, National Cancer Institute, Fondazione “G. Pascale” IRCCS, 80131 Naples, Italy; (S.C.); (G.I.); (R.D.F.); (G.C.); (A.P.)
- Department of Clinical Medicine and Surgery, Federico II University, 80131 Naples, Italy
| | | | - Gaetano Corazzelli
- Hematology-Oncology and Stem Cell transplantation Unit, National Cancer Institute, Fondazione “G. Pascale” IRCCS, 80131 Naples, Italy; (S.C.); (G.I.); (R.D.F.); (G.C.); (A.P.)
| | - Alessandra Micera
- Research and Development Laboratory for Biochemical, Molecular and Cellular Applications in Ophthalmological Sciences, IRCCS—Fondazione Bietti, 00184 Rome, Italy
- Correspondence: or (C.C.); (A.M.); Tel.:+39-34-0101-2002 (C.C.); +39-06-4554-1191 (A.M.)
| | - Antonio Pinto
- Hematology-Oncology and Stem Cell transplantation Unit, National Cancer Institute, Fondazione “G. Pascale” IRCCS, 80131 Naples, Italy; (S.C.); (G.I.); (R.D.F.); (G.C.); (A.P.)
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Wu D, Zhao Z, Kim J, Razmi A, Wang LL, Kapate N, Gao Y, Peng K, Ukidve A, Mitragotri S. Gemcitabine and doxorubicin in immunostimulatory monophosphoryl lipid A liposomes for treating breast cancer. Bioeng Transl Med 2021; 6:e10188. [PMID: 33532588 PMCID: PMC7823124 DOI: 10.1002/btm2.10188] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 12/12/2022] Open
Abstract
Cancer therapy is increasingly shifting toward targeting the tumor immune microenvironment and influencing populations of tumor infiltrating lymphocytes. Breast cancer presents a unique challenge as tumors of the triple-negative breast cancer subtype employ a multitude of immunosilencing mechanisms that promote immune evasion and rapid growth. Treatment of breast cancer with chemotherapeutics has been shown to induce underlying immunostimulatory responses that can be further amplified with the addition of immune-modulating agents. Here, we investigate the effects of combining doxorubicin (DOX) and gemcitabine (GEM), two commonly used chemotherapeutics, with monophosphoryl lipid A (MPLA), a clinically used TLR4 adjuvant derived from liposaccharides. MPLA was incorporated into the lipid bilayer of liposomes loaded with a 1:1 molar ratio of DOX and GEM to create an intravenously administered treatment. In vivo studies indicated excellent efficacy of both GEM-DOX liposomes and GEM-DOX-MPLA liposomes against 4T1 tumors. In vitro and in vivo results showed increased dendritic cell expression of CD86 in the presence of liposomes containing chemotherapeutics and MPLA. Despite this, a tumor rechallenge study indicated little effect on tumor growth upon rechallenge, indicating the lack of a long-term immune response. GEM/DOX/MPLA-L displayed remarkable control of the primary tumor growth and can be further explored for the treatment of triple-negative breast cancer with other forms of immunotherapy.
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Affiliation(s)
- Debra Wu
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
| | - Zongmin Zhao
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
| | - Jayoung Kim
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
| | - Amaya Razmi
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
| | - Lily Li‐Wen Wang
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
- Harvard‐MIT Division of Health Sciences and TechnologyMassachusetts Institute of TechnologyCambridgeMassachusettsUSA
| | - Neha Kapate
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
- Harvard‐MIT Division of Health Sciences and TechnologyMassachusetts Institute of TechnologyCambridgeMassachusettsUSA
| | - Yongsheng Gao
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
| | - Kevin Peng
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
| | - Anvay Ukidve
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
| | - Samir Mitragotri
- John A. Paulson School of Engineering and Applied SciencesHarvard UniversityCambridgeMassachusettsUSA
- Wyss Institute of Biologically Inspired EngineeringHarvard UniversityBostonMassachusettsUSA
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Kakwere H, Ingham ES, Tumbale SK, Ferrara KW. Gemcitabine-retinoid prodrug loaded nanoparticles display in vitro antitumor efficacy towards drug-resilient human PANC-1 pancreatic cancer cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111251. [PMID: 32919625 PMCID: PMC7684797 DOI: 10.1016/j.msec.2020.111251] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 03/08/2020] [Accepted: 06/30/2020] [Indexed: 12/18/2022]
Abstract
The treatment of pancreatic cancer with gemcitabine is hampered by its rapid metabolism in vivo, the dense stroma around the tumor site which prevents the drug from reaching the cancerous cells and drug resistance. To address these challenges, this study describes the preparation of a retinoid prodrug of gemcitabine, GemRA (gemcitabine conjugated to retinoic acid), and its formulation into a nanoparticulate system applicable for pancreatic cancer treatment. Retinoic acid targets stellate cells which are part of the stroma and can thus augment the delivery of gemcitabine. GemRA dissolved in dimethylsulfoxide presented efficacy towards PANC-1 (human) and mT4 (mouse) pancreatic cancer cell lines but its poor solubility in aqueous solution affects its applicability. Thus, the preparation of the nanoparticles was initially attempted through self-assembly of GemRA, which resulted in the formation of unstable aggregates that precipitated during preparation. As a result, encapsulation of the drug into micelles of polyethylene glycol-retinoic acid (PGRA) amphiphilic conjugates was accomplished and resulted in successful incorporation of GemRA into nanoparticles of ca. 33 nm by dynamic light scattering and 25 nm by transmission electron microscopy. The nanoparticles had good stability in aqueous media and protected gemcitabine from the enzymatic action of cytidine deaminase, which converts gemcitabine to its inactive metabolite upon circulation. Cellular uptake of the nanoparticles by PANC-1 cells was confirmed by fluorescence spectroscopy and flow cytometry. Treatment of PANC-1 cells in vitro with the prodrug-loaded nanoparticles resulted in a significant reduction in cell viability (IC50 ca. 5 μM) compared to treatment with gemcitabine (IC50 > 1000 μM). The ability of the GemRA-loaded nanoparticles to induce cellular apoptosis of treated PANC-1 cells was ascertained via a TUNEL assay suggesting these nanoparticles are effective in pancreatic cancer treatment.
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Affiliation(s)
- Hamilton Kakwere
- Molecular Imaging Program at Stanford (MIPS), Department of Radiology, Stanford University, Stanford, CA 94305, USA
| | - Elizabeth S Ingham
- Department of Biomedical Engineering, University of California (Davis), Davis, CA 95616, USA
| | - Spencer K Tumbale
- Molecular Imaging Program at Stanford (MIPS), Department of Radiology, Stanford University, Stanford, CA 94305, USA
| | - Katherine W Ferrara
- Molecular Imaging Program at Stanford (MIPS), Department of Radiology, Stanford University, Stanford, CA 94305, USA.
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Targeted Therapy of Hepatocellular Carcinoma Using Gemcitabine-Incorporated GPC3 Aptamer. Pharmaceutics 2020; 12:pharmaceutics12100985. [PMID: 33080969 PMCID: PMC7588995 DOI: 10.3390/pharmaceutics12100985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common malignancy of the liver, which can progress rapidly and has a poor prognosis. Glypican-3 (GPC3) has been proposed to be an important diagnostic biomarker and therapeutic target for HCC. Aptamers have emerged as promising drug delivery vehicles because of their high binding affinity for target molecules. Herein, we developed G12msi, a gemcitabine-incorporated DNA aptamer, targeting GPC3, and evaluated its binding specificity and anti-tumor efficacy in GPC3-overexpressing HCC cell lines and murine xenograft models. GPC3-targeted aptamers were selected by using the SELEX process and the chemotherapy drug gemcitabine was internally incorporated into the aptamer. To determine the binding affinity and internalization of the G12msi, flow cytometry and confocal microscopy were performed on GPC3-positive HepG2, Hep3B, and Huh7 cells, as well as a GPC3-negative A431 cell. The anti-tumor activities of G12msi were evaluated with in vitro and in vivo models. We found that G12msi binds to GPC3-overexpressing HCC tumor cells with high specificity and is effectively internalized. Moreover, G12msi treatment inhibited the cell proliferation of GPC3-positive HCC cell lines with minimal cytotoxicity in control A431 cells. In vivo systemic administration of G12msi significantly inhibited tumor growth of HCC HepG2 cells in xenograft models without causing toxicity. These results suggest that gemcitabine-incorporated GPC3 aptamer-based drug delivery may be a promising strategy for the treatment of HCC.
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Hassan T, Jinho P, Hytham H. G, Masters AR, Abdel-Aleem JA, Abdelrahman SI, Abdelrahman AA, Lyle LT, Yeo Y. Development of Liposomal Gemcitabine with High Drug Loading Capacity. Mol Pharm 2019; 16:2858-2871. [PMID: 31136710 PMCID: PMC6662591 DOI: 10.1021/acs.molpharmaceut.8b01284] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Liposomes are widely used for systemic delivery of chemotherapeutic agents to reduce their nonspecific side effects. Gemcitabine (Gem) makes a great candidate for liposomal encapsulation due to the short half-life and nonspecific side effects; however, it has been difficult to achieve liposomal Gem with high drug loading capacity. Remote loading, which uses a transmembrane pH gradient to induce an influx of drug and locks the drug in the core as a sulfate complex, does not serve Gem as efficiently as doxorubicin (Dox) due to the low p Ka value of Gem. Existing studies have attempted to improve Gem loading capacity in liposomes by employing lipophilic Gem derivatives or creating a high-concentration gradient for active loading into the hydrophilic cores (small volume loading). In this study, we combine the remote loading approach and small volume loading or hypertonic loading, a new approach to induce the influx of Gem into the preformed liposomes by high osmotic pressure, to achieve a Gem loading capacity of 9.4-10.3 wt % in contrast to 0.14-3.8 wt % of the conventional methods. Liposomal Gem showed a good stability during storage, sustained-release over 120 h in vitro, enhanced cellular uptake, and improved cytotoxicity as compared to free Gem. Liposomal Gem showed a synergistic effect with liposomal Dox on Huh7 hepatocellular carcinoma cells. A mixture of liposomal Gem and liposomal Dox delivered both drugs to the tumor more efficiently than a free drug mixture and showed a relatively good anti-tumor effect in a xenograft model of hepatocellular carcinoma. This study shows that bioactive liposomal Gem with high drug loading capacity can be produced by remote loading combined with additional approaches to increase drug influx into the liposomes.
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Affiliation(s)
- Tamam Hassan
- Department of Industrial Pharmacy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Park Jinho
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
| | - Gadalla Hytham H.
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Andrea R. Masters
- Clinical Pharmacology Analytical Core, Indiana University Melvin and Bren Simon Cancer Center, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Jelan A. Abdel-Aleem
- Department of Industrial Pharmacy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Sayed I. Abdelrahman
- Department of Industrial Pharmacy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Aly A. Abdelrahman
- Department of Industrial Pharmacy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - L. Tiffany Lyle
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN 47907, USA
| | - Yoon Yeo
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA
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Xu J, Tu H, Ao Z, Chen Y, Danehy R, Guo F. Acoustic disruption of tumor endothelium and on-demand drug delivery for cancer chemotherapy. NANOTECHNOLOGY 2019; 30:154001. [PMID: 30641501 DOI: 10.1088/1361-6528/aafe4e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chemotherapy has been the most widely used treatment against cancer, however, it is limited by its systemic toxicity as well as resistance developed by tumors' physical barriers. Herein, we propose a novel acoustically-mediated treatment regime to on-demand release therapeutics and disrupt tumor structures. By programming a high intensity focused ultrasound transducer, we can locally and digitally release gemcitabine (GEM) as well as open the local blood-tumor barrier or even tumor stroma to enhance intratumor drug delivery via acoustically-oscillating bubbles and liposomes. In our experiments, we modeled tumor endothelium by culturing a monolayer of murine endothelial cells (2H11) on transwell membrane. We locally disrupted the cultured endothelium to enhance drug penetration by using perfluorocarbon liquid droplets as breaking probes and protoporphyrin IX hybridized liposomes as drug carriers. We also demonstrated an on-demand release of GEM by digitally triggering the break of drug carriers. Moreover, we validated the acoustic tumor endothelium disruption in vivo by monitoring penetration of dye (Evans blue) in solid tumors. Therefore, we present an acoustically-mediated delivery method that both releases drug on-demand locally and opens the blood-tumor barrier to enhance drug penetration. This sets the ground for further clinical cancer therapy to improve many systemic cancer treatments.
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Affiliation(s)
- Junhua Xu
- Department of Intelligent Systems Engineering, Indiana University, Bloomington, IN 47405, United States of America
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10
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Drug-Loaded Biocompatible Nanocarriers Embedded in Poloxamer 407 Hydrogels as Therapeutic Formulations. MEDICINES 2018; 6:medicines6010007. [PMID: 30597953 PMCID: PMC6473859 DOI: 10.3390/medicines6010007] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/19/2018] [Accepted: 12/28/2018] [Indexed: 02/07/2023]
Abstract
Hydrogels are three-dimensional networks of hydrophilic polymers able to absorb and retain a considerable amount of water or biological fluid while maintaining their structure. Among these, thermo-sensitive hydrogels, characterized by a temperature-dependent sol–gel transition, have been massively used as drug delivery systems for the controlled release of various bioactives. Poloxamer 407 (P407) is an ABA-type triblock copolymer with a center block of hydrophobic polypropylene oxide (PPO) between two hydrophilic polyethyleneoxide (PEO) lateral chains. Due to its unique thermo-reversible gelation properties, P407 has been widely investigated as a temperature-responsive material. The gelation phenomenon of P407 aqueous solutions is reversible and characterized by a sol–gel transition temperature. The nanoencapsulation of drugs within biocompatible delivery systems dispersed in P407 hydrogels is a strategy used to increase the local residence time of various bioactives at the injection site. In this mini-review, the state of the art of the most important mixed systems made up of colloidal carriers localized within a P407 hydrogel will be provided in order to illustrate the possibility of obtaining a controlled release of the entrapped drugs and an increase in their therapeutic efficacy as a function of the biomaterial used.
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11
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Chen Z, Zheng Y, Shi Y, Cui Z. Overcoming tumor cell chemoresistance using nanoparticles: lysosomes are beneficial for (stearoyl) gemcitabine-incorporated solid lipid nanoparticles. Int J Nanomedicine 2018; 13:319-336. [PMID: 29391792 PMCID: PMC5768424 DOI: 10.2147/ijn.s149196] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Despite recent advances in targeted therapies and immunotherapies, chemotherapy using cytotoxic agents remains an indispensable modality in cancer treatment. Recently, there has been a growing emphasis in using nanomedicine in cancer chemotherapy, and several nanomedicines have already been used clinically to treat cancers. There is evidence that formulating small molecular cancer chemotherapeutic agents into nanomedicines significantly modifies their pharmacokinetics and often improves their efficacy. Importantly, cancer cells often develop resistance to chemotherapy, and formulating anticancer drugs into nanomedicines also helps overcome chemoresistance. In this review, we briefly describe the different classes of cancer chemotherapeutic agents, their mechanisms of action and resistance, and evidence of overcoming the resistance using nanomedicines. We then emphasize on gemcitabine and our experience in discovering the unique (stearoyl) gemcitabine solid lipid nanoparticles that are effective against tumor cells resistant to gemcitabine and elucidate the underlying mechanisms. It seems that lysosomes, which are an obstacle in the delivery of many drugs, are actually beneficial for our (stearoyl) gemcitabine solid lipid nanoparticles to overcome tumor cell resistance to gemcitabine.
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Affiliation(s)
- Zhe Chen
- Inner Mongolia Key Lab of Molecular Biology, School of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Yuanqiang Zheng
- Inner Mongolia Key Lab of Molecular Biology, School of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Yanchun Shi
- Inner Mongolia Key Lab of Molecular Biology, School of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
| | - Zhengrong Cui
- Inner Mongolia Key Lab of Molecular Biology, School of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China.,Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX, USA
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12
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Affram K, Udofot O, Singh M, Krishnan S, Reams R, Rosenberg J, Agyare E. Smart thermosensitive liposomes for effective solid tumor therapy and in vivo imaging. PLoS One 2017; 12:e0185116. [PMID: 28934281 PMCID: PMC5608370 DOI: 10.1371/journal.pone.0185116] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 09/05/2017] [Indexed: 12/22/2022] Open
Abstract
In numerous studies, liposomes have been used to deliver anticancer drugs such as doxorubicin to local heat-triggered tumor. Here, we investigate: (i) the ability of thermosensitive liposomal nanoparticle (TSLnp) as a delivery system to deliver poorly membrane-permeable anticancer drug, gemcitabine (Gem) to solid pancreatic tumor with the aid of local mild hyperthermia and, (ii) the possibility of using gadolinium (Magnevist®) loaded-TSLnps (Gd-TSLnps) to increase magnetic resonance imaging (MRI) contrast in solid tumor. In this study, we developed and tested gemcitabine-loaded thermosensitive liposomal nanoparticles (Gem-TSLnps) and gadolinium-loaded thermosensitive liposomal nanoparticles (Gd-TSLnps) both in in-vitro and in-vivo. The TSLnps exhibited temperature-dependent release of Gem, at 40-42°C, 65% of Gem was released within 10 min, whereas < 23% Gem leakage occurred at 37°C after a period of 2 h. The pharmacokinetic parameters and tissue distribution of both Gem-TSLnps and Gd-TSLnps were significantly greater compared with free Gem and Gd, while Gem-TSLnps plasma clearance was reduced by 17-fold and that of Gd-TSLpns was decreased by 2-fold. Area under the plasma concentration time curve (AUC) of Gem-TSLnps (35.17± 0.04 μghr/mL) was significantly higher than that of free Gem (2.09 ± 0.01 μghr/mL) whereas, AUC of Gd-TSLnps was higher than free Gd by 3.9 fold high. TSLnps showed significant Gem accumulation in heated tumor relative to free Gem. Similar trend of increased Gd-TSLnps accumulation was observed in non-heated tumor compared to that of free Gd; however, no significant difference in MRI contrast enhancement between free Gd and Gd-TSLnps ex-vivo tumor images was observed. Despite Gem-TSLnps dose being half of free Gem dose, antitumor efficacy of Gem-TSLnps was comparable to that of free Gem(Gem-TSLnps 10 mg Gem/kg compared with free Gem 20 mg/kg). Overall, the findings suggest that TSLnps may be used to improve Gem delivery and enhance its antitumor activity. However, the formulation of Gd-TSLnp needs to be fully optimized to significantly enhance MRI contrast in tumor.
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Affiliation(s)
- Kevin Affram
- College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, Florida, United States of America
| | - Ofonime Udofot
- College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, Florida, United States of America
| | - Mandip Singh
- College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, Florida, United States of America
| | - Sunil Krishnan
- The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Renee Reams
- College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, Florida, United States of America
| | - Jens Rosenberg
- The National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida, United States of America
| | - Edward Agyare
- College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, Florida, United States of America
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13
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Ruttala HB, Ramasamy T, Poudal BK, Choi Y, Choi JY, Kim J, Ku SK, Choi HG, Yong CS, Kim JO. Molecularly targeted co-delivery of a histone deacetylase inhibitor and paclitaxel by lipid-protein hybrid nanoparticles for synergistic combinational chemotherapy. Oncotarget 2017; 8:14925-14940. [PMID: 28122339 PMCID: PMC5362455 DOI: 10.18632/oncotarget.14742] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 01/10/2017] [Indexed: 01/05/2023] Open
Abstract
In this study, a transferrin-anchored albumin nanoplatform with PEGylated lipid bilayers (Tf-L-APVN) was developed for the targeted co-delivery of paclitaxel and vorinostat in solid tumors. Tf-L-APVN exhibited a sequential and controlled release profile of paclitaxel and vorinostat, with an accelerated release pattern at acidic pH. At cellular levels, Tf-L-APVN significantly enhanced the synergistic effects of paclitaxel and vorinostat on the proliferation of MCF-7, MDA-MB-231, and HepG2 cancer cells. Vorinostat could significantly enhance the cytotoxic potential of paclitaxel, induce marked cell apoptosis, alter cell cycle patterns, and inhibit the migratory capacity of cancer cells. In addition, Tf-L-APVN showed prolonged circulation in the blood and maintained an effective ratio of 1:1 (for paclitaxel and vorinostat) throughout the study period. In HepG2 tumor-bearing mice, Tf-L-APVN displayed excellent antitumor efficacy and the combination of paclitaxel and vorinostat significantly inhibited the tumor growth. Taken together, dual drug-loaded Tf receptor-targeted nanomedicine holds great potential in chemotherapy of solid tumors.
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Affiliation(s)
- Hima Bindu Ruttala
- College of Pharmacy, Yeungnam University, 214-1, Dae-dong, Gyeongsan, 712-749, South Korea
| | - Thiruganesh Ramasamy
- College of Pharmacy, Yeungnam University, 214-1, Dae-dong, Gyeongsan, 712-749, South Korea
| | - Bijay Kumar Poudal
- College of Pharmacy, Yeungnam University, 214-1, Dae-dong, Gyeongsan, 712-749, South Korea
| | - Yongjoo Choi
- College of Pharmacy, Yeungnam University, 214-1, Dae-dong, Gyeongsan, 712-749, South Korea
| | - Ju Yeon Choi
- College of Pharmacy, Yeungnam University, 214-1, Dae-dong, Gyeongsan, 712-749, South Korea
| | - Jeonghwan Kim
- College of Pharmacy, Yeungnam University, 214-1, Dae-dong, Gyeongsan, 712-749, South Korea
| | - Sae Kwang Ku
- College of Korean Medicine, Daegu Haany University, Gyeongsan, 712-715, South Korea
| | - Han-Gon Choi
- College of Pharmacy, Institute of Pharmaceutical Science and Technology, Hanyang University, Sangnok-gu, Ansan 426-791, South Korea
| | - Chul Soon Yong
- College of Pharmacy, Yeungnam University, 214-1, Dae-dong, Gyeongsan, 712-749, South Korea
| | - Jong Oh Kim
- College of Pharmacy, Yeungnam University, 214-1, Dae-dong, Gyeongsan, 712-749, South Korea
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14
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Li Y, Chen H, Xu J, Yadav NN, Chan KWY, Luo L, McMahon MT, Vogelstein B, van Zijl PCM, Zhou S, Liu G. CEST theranostics: label-free MR imaging of anticancer drugs. Oncotarget 2016; 7:6369-78. [PMID: 26837220 PMCID: PMC4872720 DOI: 10.18632/oncotarget.7141] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 01/28/2016] [Indexed: 11/25/2022] Open
Abstract
Image-guided drug delivery is of great clinical interest. Here, we explored a direct way, namely CEST theranostics, to detect diamagnetic anticancer drugs simply through their inherent Chemical Exchange Saturation Transfer (CEST) MRI signal, and demonstrated its application in image-guided drug delivery of nanoparticulate chemotherapeutics. We first screened 22 chemotherapeutic agents and characterized the CEST properties of representative agents and natural analogs in three major categories, i.e., pyrimidine analogs, purine analogs, and antifolates, with respect to chemical structures. Utilizing the inherent CEST MRI signal of gemcitabine, a widely used anticancer drug, the tumor uptake of the i.v.-injected, drug-loaded liposomes was successfully detected in CT26 mouse tumors. Such label-free CEST MRI theranostics provides a new imaging means, potentially with an immediate clinical impact, to monitor the drug delivery in cancer.
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Affiliation(s)
- Yuguo Li
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.,The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Hanwei Chen
- The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Radiology, Panyu Central Hospital, Guangzhou, China.,Department of Radiology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Jiadi Xu
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.,The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Nirbhay N Yadav
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.,The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Kannie W Y Chan
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.,The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Liangping Luo
- Department of Radiology, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Michael T McMahon
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.,The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Bert Vogelstein
- Ludwig Center, Howard Hughes Medical Institute and Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Peter C M van Zijl
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.,The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Shibin Zhou
- Ludwig Center, Howard Hughes Medical Institute and Sidney Kimmel Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Guanshu Liu
- F.M. Kirby Research Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, Maryland, USA.,The Russell H. Morgan Department of Radiology and Radiological Science, Division of MR Research, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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15
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Durfee PN, Lin YS, Dunphy DR, Muñiz AJ, Butler KS, Humphrey KR, Lokke AJ, Agola JO, Chou SS, Chen IM, Wharton W, Townson JL, Willman CL, Brinker CJ. Mesoporous Silica Nanoparticle-Supported Lipid Bilayers (Protocells) for Active Targeting and Delivery to Individual Leukemia Cells. ACS NANO 2016; 10:8325-45. [PMID: 27419663 DOI: 10.1021/acsnano.6b02819] [Citation(s) in RCA: 137] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Many nanocarrier cancer therapeutics currently under development, as well as those used in the clinical setting, rely upon the enhanced permeability and retention (EPR) effect to passively accumulate in the tumor microenvironment and kill cancer cells. In leukemia, where leukemogenic stem cells and their progeny circulate within the peripheral blood or bone marrow, the EPR effect may not be operative. Thus, for leukemia therapeutics, it is essential to target and bind individual circulating cells. Here, we investigate mesoporous silica nanoparticle (MSN)-supported lipid bilayers (protocells), an emerging class of nanocarriers, and establish the synthesis conditions and lipid bilayer composition needed to achieve highly monodisperse protocells that remain stable in complex media as assessed in vitro by dynamic light scattering and cryo-electron microscopy and ex ovo by direct imaging within a chick chorioallantoic membrane (CAM) model. We show that for vesicle fusion conditions where the lipid surface area exceeds the external surface area of the MSN and the ionic strength exceeds 20 mM, we form monosized protocells (polydispersity index <0.1) on MSN cores with varying size, shape, and pore size, whose conformal zwitterionic supported lipid bilayer confers excellent stability as judged by circulation in the CAM and minimal opsonization in vivo in a mouse model. Having established protocell formulations that are stable colloids, we further modified them with anti-EGFR antibodies as targeting agents and reverified their monodispersity and stability. Then, using intravital imaging in the CAM, we directly observed in real time the progression of selective targeting of individual leukemia cells (using the established REH leukemia cell line transduced with EGFR) and delivery of a model cargo. Overall, we have established the effectiveness of the protocell platform for individual cell targeting and delivery needed for leukemia and other disseminated disease.
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Affiliation(s)
- Paul N Durfee
- Chemical and Biological Engineering, University of New Mexico , 210 University Blvd NE, Albuquerque, New Mexico 87131-0001, United States
- Center for Micro-Engineered Materials, Advanced Materials Laboratory, University of New Mexico , MSC04 2790, 1001 University Blvd SE, Suite 103, Albuquerque, New Mexico 87106, United States
| | - Yu-Shen Lin
- Internal Medicine, University of New Mexico , MSC10 5550, 1 University of New Mexico, Albuquerque, New Mexico 87131, United States
- Oncothyreon, Inc. , 2601 Fourth Avenue, Seattle, Washington 98121-3222, United States
| | - Darren R Dunphy
- Center for Micro-Engineered Materials, Advanced Materials Laboratory, University of New Mexico , MSC04 2790, 1001 University Blvd SE, Suite 103, Albuquerque, New Mexico 87106, United States
| | - Ayşe J Muñiz
- Health Sciences Center, Biochemistry and Molecular Biology, University of New Mexico , MSC08 4670, 1 University of New Mexico, Albuquerque, New Mexico 87131-5001, United States
| | - Kimberly S Butler
- Center for Micro-Engineered Materials, Advanced Materials Laboratory, University of New Mexico , MSC04 2790, 1001 University Blvd SE, Suite 103, Albuquerque, New Mexico 87106, United States
| | - Kevin R Humphrey
- Biomedical Engineering, Vanderbilt University , 2301 Vanderbilt Place, Nashville, Tennessee 37235-1826, United States
| | - Amanda J Lokke
- Health Sciences Center, Biochemistry and Molecular Biology, University of New Mexico , MSC08 4670, 1 University of New Mexico, Albuquerque, New Mexico 87131-5001, United States
| | - Jacob O Agola
- Center for Micro-Engineered Materials, Advanced Materials Laboratory, University of New Mexico , MSC04 2790, 1001 University Blvd SE, Suite 103, Albuquerque, New Mexico 87106, United States
| | - Stanley S Chou
- Advanced Materials Laboratory, Sandia National Laboratories , 1001 University Blvd. SE, Suite 100, Albuquerque, New Mexico 87106, United States
| | - I-Ming Chen
- Department of Pathology, University of New Mexico , MSC08 4640, 1 University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
- Comprehensive Cancer Center, The University of New Mexico , MSC07 4025, 1 University of New Mexico, 1201 Camino de Salud NE, Albuquerque, New Mexico 87131-0001, United States
| | - Walker Wharton
- Department of Pathology, University of New Mexico , MSC08 4640, 1 University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
- Comprehensive Cancer Center, The University of New Mexico , MSC07 4025, 1 University of New Mexico, 1201 Camino de Salud NE, Albuquerque, New Mexico 87131-0001, United States
| | - Jason L Townson
- Internal Medicine, University of New Mexico , MSC10 5550, 1 University of New Mexico, Albuquerque, New Mexico 87131, United States
- Oncothyreon, Inc. , 2601 Fourth Avenue, Seattle, Washington 98121-3222, United States
| | - Cheryl L Willman
- Department of Pathology, University of New Mexico , MSC08 4640, 1 University of New Mexico, Albuquerque, New Mexico 87131-0001, United States
- Comprehensive Cancer Center, The University of New Mexico , MSC07 4025, 1 University of New Mexico, 1201 Camino de Salud NE, Albuquerque, New Mexico 87131-0001, United States
| | - C Jeffrey Brinker
- Chemical and Biological Engineering, University of New Mexico , 210 University Blvd NE, Albuquerque, New Mexico 87131-0001, United States
- Center for Micro-Engineered Materials, Advanced Materials Laboratory, University of New Mexico , MSC04 2790, 1001 University Blvd SE, Suite 103, Albuquerque, New Mexico 87106, United States
- Advanced Materials Laboratory, Sandia National Laboratories , 1001 University Blvd. SE, Suite 100, Albuquerque, New Mexico 87106, United States
- Comprehensive Cancer Center, The University of New Mexico , MSC07 4025, 1 University of New Mexico, 1201 Camino de Salud NE, Albuquerque, New Mexico 87131-0001, United States
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16
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Jiang Y, Cao S, Bright DK, Bever AM, Blakney AK, Suydam IT, Woodrow KA. Nanoparticle-Based ARV Drug Combinations for Synergistic Inhibition of Cell-Free and Cell-Cell HIV Transmission. Mol Pharm 2015; 12:4363-74. [PMID: 26529558 DOI: 10.1021/acs.molpharmaceut.5b00544] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Nanocarrier-based drug delivery systems are playing an emerging role in human immunodeficiency virus (HIV) chemoprophylaxis and treatment due to their ability to alter the pharmacokinetics and improve the therapeutic index of various antiretroviral (ARV) drug compounds used alone and in combination. Although several nanocarriers have been described for combination delivery of ARV drugs, measurement of drug-drug activities facilitated by the use of these nanotechnology platforms has not been fully investigated for topical prevention. Here, we show that physicochemically diverse ARV drugs can be encapsulated within polymeric nanoparticles to deliver multidrug combinations that provide potent HIV chemoprophylaxis in relevant models of cell-free, cell-cell, and mucosal tissue infection. In contrast to existing approaches that coformulate ARV drug combinations together in a single nanocarrier, we prepared single-drug-loaded nanoparticles that were subsequently combined upon administration. ARV drug-nanoparticles were prepared using emulsion-solvent evaporation techniques to incorporate maraviroc (MVC), etravirine (ETR), and raltegravir (RAL) into poly(lactic-co-glycolic acid) (PLGA) nanoparticles. We compared the antiviral potency of the free and formulated drug combinations for all pairwise and triple drug combinations against both cell-free and cell-associated HIV-1 infection in vitro. The efficacy of ARV-drug nanoparticle combinations was also assessed in a macaque cervicovaginal explant model using a chimeric simian-human immunodeficiency virus (SHIV) containing the reverse transcriptase (RT) of HIV-1. We observed that our ARV-NPs maintained potent HIV inhibition and were more effective when used in combinations. In particular, ARV-NP combinations involving ETR-NP exhibited significantly higher antiviral potency and dose-reduction against both cell-free and cell-associated HIV-1 BaL infection in vitro. Furthermore, ARV-NP combinations that showed large dose-reduction were identified to be synergistic, whereas the equivalent free-drug combinations were observed to be strictly additive. Higher intracellular drug concentration was measured for cells dosed with the triple ARV-NP combination compared to the equivalent unformulated drugs. Finally, as a first step toward evaluating challenge studies in animal models, we also show that our ARV-NP combinations inhibit RT-SHIV virus propagation in macaque cervicovaginal tissue and block virus transmission by migratory cells emigrating from the tissue. Our results demonstrate that ARV-NP combinations control HIV-1 transmission more efficiently than free-drug combinations. These studies provide a rationale to better understand the role of nanocarrier systems in facilitating multidrug effects in relevant cells and tissues associated with HIV infection.
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Affiliation(s)
- Yonghou Jiang
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Shijie Cao
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Danielle K Bright
- Department of Chemistry, Seattle University , Seattle, Washington 98122, United States
| | - Alaina M Bever
- Department of Chemistry, Seattle University , Seattle, Washington 98122, United States
| | - Anna K Blakney
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
| | - Ian T Suydam
- Department of Chemistry, Seattle University , Seattle, Washington 98122, United States
| | - Kim A Woodrow
- Department of Bioengineering, University of Washington , Seattle, Washington 98195, United States
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17
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Yu X, Di Y, Xie C, Song Y, He H, Li H, Pu X, Lu W, Fu D, Jin C. An in vitro and in vivo study of gemcitabine-loaded albumin nanoparticles in a pancreatic cancer cell line. Int J Nanomedicine 2015; 10:6825-34. [PMID: 26586944 PMCID: PMC4636168 DOI: 10.2147/ijn.s93835] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Gemcitabine (Gem) is far from satisfactory as the first-line regimen for pancreatic cancer, and the emergence of albumin nanoparticles offers new hope for the delivery of Gem. In this study, Gem-loaded human serum albumin nanoparticles (Gem-HSA-NPs) were successfully synthesized, characterized, and tested on a BxPC-3 cell line both in vitro and in vivo. MATERIALS AND METHODS 4-N-myristoyl-gemcitabine (Gem-C14) was obtained first by coupling myristoyl with the 4-amino group of Gem. The Gem-HSA-NPs were then prepared by nanoparticle albumin-bound technology and characterized for particle size, zeta potential, morphology, encapsulation efficiency, drug-loading efficiency, and release characteristics. Using both in vitro and in vivo studies, Gem-C14 and Gem-HSA-NPs were tested on the human pancreatic cancer cell line BxPC-3. RESULTS Gem-HSA-NPs showed an average particle size of 150±27 nm, and with an encapsulation rate of 82.99%±3.5% and a drug-loading rate of 10.42%±3.5%, they exhibited a favorable controlled- and sustained-release nature. In in vitro, Gem-C14 was equivalent in cytotoxicity to Gem. In in vivo, the Gem-HSA-NPs exhibited the strongest inhibitory effect on tumor growth but the lowest toxicity among the four groups. CONCLUSION The enhanced in vivo efficacy of Gem-HSA-NPs toward the pancreatic cancer cell line suggests their potential role for use in the clinical field.
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Affiliation(s)
- Xinzhe Yu
- Pancreatic Surgery Department, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yang Di
- Pancreatic Disease Institute, Fudan University, Shanghai, People's Republic of China
| | - Chao Xie
- School of Pharmacy & Key Laboratory of Smart Drug Delivery, Fudan University, Shanghai, People's Republic of China
| | - Yunlong Song
- School of Pharmacy, The Second Military Medical University, Shanghai, People's Republic of China
| | - Hang He
- Pancreatic Disease Institute, Fudan University, Shanghai, People's Republic of China
| | - Hengchao Li
- Pancreatic Surgery Department, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Xinming Pu
- The State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai, People's Republic of China
| | - Weiyue Lu
- School of Pharmacy & Key Laboratory of Smart Drug Delivery, Fudan University, Shanghai, People's Republic of China
| | - Deliang Fu
- Pancreatic Disease Institute, Fudan University, Shanghai, People's Republic of China
| | - Chen Jin
- Pancreatic Surgery Department, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
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Affram K, Udofot O, Cat A, Agyare E. In vitro and in vivo antitumor activity of gemcitabine loaded thermosensitive liposomal nanoparticles and mild hyperthermia in pancreatic cancer. INTERNATIONAL JOURNAL OF ADVANCED RESEARCH 2015; 3:859-874. [PMID: 26677454 PMCID: PMC4677791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The study was designed to explore the feasibility of increasing the delivery of gemcitabine-HCL (Gem), a poor membrane permeable and short half-life drug, through PEGylated thermosensitive liposomal nanoparticles (TSLnps) delivery system followed by mild hyperthermia (mTH) at 42°C. In vitro release pattern of Gem-TSLnps showed a significant Gem release (60%, p<0.01) at 42°C compared to that released at 37°C (29%). Cell viability and clonogenic assay demonstrated significant inhibition of MiaPaCa-2 cells growth by Gem-TSLnps + mHT compared to Gem alone. Further, IC50 value of Gem treated cells was (0.077μM) 1.2 fold higher compared to that treated with Gem-TSLnps + mHT (0.063 μM). mHT treated cells showed moderate inhibition of cell growth compared to controls. For cellular uptake studies, flow cytometric analysis and confocal imaging revealed higher uptake of Rho-TSLnps compared to Rho-PE or untreated cells. Tumor volume of mice treated with Gem alone was 1.8 fold higher compared to the group treated with Gem-TSLnps + mHT. Further, tumor regression of Gem-TSLnps + mHT treated group was significantly higher (p<0.01) compared to Gem-TSLnps or Gem. No significant elevated liver enzymes were observed when serum alanine aminotransferase (ALT) or aspartate aminotransferase (AST) level of control group was compared to that of Gem or Gem-TSLnps+mHT treated groups. However, serum level of alkaline phosphatase (ALP) of Gem or Gem-TSLnps+ mHT treated group was significantly elevated (p<0.05) when compared to the control group. In conclusion, TSLnps increased the delivery of Gem to tumor cells and also enhanced significantly the antitumor activity of Gem when combined with heat.
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Affiliation(s)
- Kevin Affram
- Division of Basic Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, FL, USA
| | - Ofonime Udofot
- Division of Basic Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, FL, USA
| | - Anna Cat
- Division of Basic Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, FL, USA
| | - Edward Agyare
- Division of Basic Pharmaceutical Sciences, College of Pharmacy and Pharmaceutical Sciences, Florida A & M University, Tallahassee, FL, USA
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Bladder uptake of liposomes after intravesical administration occurs by endocytosis. PLoS One 2015; 10:e0122766. [PMID: 25811468 PMCID: PMC4374861 DOI: 10.1371/journal.pone.0122766] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 02/17/2015] [Indexed: 02/06/2023] Open
Abstract
Liposomes have been used therapeutically and as a local drug delivery system in the bladder. However, the exact mechanism for the uptake of liposomes by bladder cells is unclear. In the present study, we investigated the role of endocytosis in the uptake of liposomes by cultured human UROtsa cells of urothelium and rat bladder. UROtsa cells were incubated in serum-free media with liposomes containing colloidal gold particles for 2 h either at 37°C or at 4°C. Transmission Electron Microscopy (TEM) images of cells incubated at 37°C found endocytic vesicles containing gold inside the cells. In contrast, only extracellular binding was noticed in cells incubated with liposomes at 4°C. Absence of liposome internalization at 4°C indicates the need of energy dependent endocytosis as the primary mechanism of entry of liposomes into the urothelium. Flow cytometry analysis revealed that the uptake of liposomes at 37°C occurs via clathrin mediated endocytosis. Based on these observations, we propose that clathrin mediated endocytosis is the main route of entry for liposomes into the urothelial layer of the bladder and the findings here support the usefulness of liposomes in intravesical drug delivery.
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Meng H, Wang M, Liu H, Liu X, Situ A, Wu B, Ji Z, Chang CH, Nel AE. Use of a lipid-coated mesoporous silica nanoparticle platform for synergistic gemcitabine and paclitaxel delivery to human pancreatic cancer in mice. ACS NANO 2015; 9:3540-57. [PMID: 25776964 PMCID: PMC4415452 DOI: 10.1021/acsnano.5b00510] [Citation(s) in RCA: 309] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 03/16/2015] [Indexed: 05/18/2023]
Abstract
Recently, a commercial albumin-bound paclitaxel (PTX) nanocarrier (Abraxane) was approved as the first new drug for pancreatic ductal adenocarcinoma in almost a decade. PTX improves the pharmaceutical efficacy of the first-line pancreatic cancer drug, gemcitabine (GEM), through suppression of the tumor stroma and inhibiting the expression of the GEM-inactivating enzyme, cytidine deaminase (CDA). We asked, therefore, whether it was possible to develop a mesoporous silica nanoparticle (MSNP) carrier for pancreatic cancer to co-deliver a synergistic GEM/PTX combination. High drug loading was achieved by a custom-designed coated lipid film technique to encapsulate a calculated dose of GEM (40 wt %) by using a supported lipid bilayer (LB). The uniform coating of the 65 nm nanoparticles by a lipid membrane allowed incorporation of a sublethal amount of hydrophobic PTX, which could be co-delivered with GEM in pancreatic cells and tumors. We demonstrate that ratiometric PTX incorporation and delivery by our LB-MSNP could suppress CDA expression, contemporaneous with induction of oxidative stress as the operating principle for PTX synergy. To demonstrate the in vivo efficacy, mice carrying subcutaneous PANC-1 xenografts received intravenous (IV) injection of PTX/GEM-loaded LB-MSNP. Drug co-delivery provided more effective tumor shrinkage than GEM-loaded LB-MSNP, free GEM, or free GEM plus Abraxane. Comparable tumor shrinkage required coadministration of 12 times the amount of free Abraxane. High-performance liquid chromatography analysis of tumor-associated GEM metabolites confirmed that, compared to free GEM, MSNP co-delivery increased the phosphorylated DNA-interactive GEM metabolite 13-fold and decreased the inactivated and deaminated metabolite 4-fold. IV injection of MSNP-delivered PTX/GEM in a PANC-1 orthotopic model effectively inhibited primary tumor growth and eliminated metastatic foci. The enhanced in vivo efficacy of the dual delivery carrier could be achieved with no evidence of local or systemic toxicity. In summary, we demonstrate the development of an effective LB-MSNP nanocarrier for synergistic PTX/GEM delivery in pancreatic cancer.
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Affiliation(s)
- Huan Meng
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
- Address correspondence to ,
| | - Meiying Wang
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Huiyu Liu
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
- Laboratory of Controllable Preparation and Application of Nanomaterials, Research Center for Micro & Nano Materials and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Xiangsheng Liu
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Allen Situ
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Bobby Wu
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Zhaoxia Ji
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Chong Hyun Chang
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
| | - Andre E. Nel
- Division of NanoMedicine, Department of Medicine, and California NanoSystems Institute, University of California, Los Angeles, California 90095, United States
- Address correspondence to ,
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Liposomal inhibition of acrolein-induced injury in rat cultured urothelial cells. Int Urol Nephrol 2014; 46:1947-52. [PMID: 24875005 DOI: 10.1007/s11255-014-0745-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 05/11/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE To study the protection offered by empty liposomes (LPs) alone against acrolein-induced changes in urothelial cell viability and explored uptake of LPs by primary (rat) urothelial cells. METHODS Acrolein was used as a means to induce cellular damage and reduce urothelial cellular viability. The effect of acrolein or liposomal treatment on cellular proliferation was studied using 5-bromo-2'-deoxy-uridine assay. Cytokine release was measured after urothelial cells were exposed to acrolein. Temperature-dependent uptake study was carried out for fluorescent-labeled LPs using confocal microscopy. RESULTS Liposome pretreatment protected against acrolein-induced decrease in urothelial cell proliferation. LPs also significantly affected the acrolein-induced cytokine (interferon-gamma) release offering protection to the urothelial cells against acrolein damage. We also observed a temperature-dependent urothelial uptake of fluorescent-labeled LPs occurred at 37 °C (but not at 4 °C). CONCLUSIONS Empty LPs alone provide a therapeutic efficacy against acrolein-induced changes in urothelial cell viability and may be a promising local therapy for bladder diseases. Hence, our preliminary evidence provides support for liposome-therapy for urothelial protection and possible repair.
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Development of high-content gemcitabine PEGylated liposomes and their cytotoxicity on drug-resistant pancreatic tumour cells. Pharm Res 2014; 31:2583-92. [PMID: 24639234 DOI: 10.1007/s11095-014-1353-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 02/27/2014] [Indexed: 10/25/2022]
Abstract
PURPOSE The objective of this study was to develop high-content gemcitabine PEGylated liposomes to reverse gemcitabine resistance in pancreatic tumour cells. The mechanism of drug loading into liposomes was also investigated. METHODS To increase the drug entrapment efficiency (EE) and drug loading (DL), a novel passive loading approach named Small Volume Incubation method (SVI) was developed and compared to the reverse phase evaporation (REV) and remote loading methods. The in vitro cytotoxicity was evaluated using MIA PaCa-2 and Panc-1 cell lines. RESULTS The EE for remote loading was 12.3 ± 0.3%, much lower than expected and a burst release was observed with the resultant liposomes. Using the optimized SVI method, increased EE (37 ± 1%) and DL (4%, w/w) were obtained. The liposomes (200 ± 5 nm) showed minimal drug leakage, good stability, and significant improvement in cytotoxicity to the gemcitabine-resistant pancreatic cancer cell lines. CONCLUSIONS Remote loading was not suitable for loading gemcitabine into liposomes. pKa > 4.6 for basic drugs and intra-liposomal precipitation of loaded compounds were suggested as an additional requirement to the current criteria for remote loading using ammonium sulphate gradient (pKa < 11). High DL is essential for liposomes to reverse gemcitabine resistance in pancreatic cell lines.
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Meng H, Zhao Y, Dong J, Xue M, Lin YS, Ji Z, Mai WX, Zhang H, Chang CH, Brinker CJ, Zink JI, Nel AE. Two-wave nanotherapy to target the stroma and optimize gemcitabine delivery to a human pancreatic cancer model in mice. ACS NANO 2013; 7:10048-65. [PMID: 24143858 PMCID: PMC3878438 DOI: 10.1021/nn404083m] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) elicits a dense stromal response that blocks vascular access because of pericyte coverage of vascular fenestrations. In this way, the PDAC stroma contributes to chemotherapy resistance in addition to causing other problems. In order to improve the delivery of gemcitabine, a first-line chemotherapeutic agent, a PEGylated drug-carrying liposome was developed, using a transmembrane ammonium sulfate gradient to encapsulate the protonated drug up to 20% w/w. However, because the liposome was precluded from entering the xenograft site due to the stromal interference, we developed a first-wave nanocarrier that decreases pericyte coverage of the vasculature through interference in the pericyte recruiting TGF-β signaling pathway. This was accomplished using a polyethyleneimine (PEI)/polyethylene glycol (PEG)-coated mesoporous silica nanoparticle (MSNP) for molecular complexation to a small molecule TGF-β inhibitor, LY364947. LY364947 contains a nitrogen atom that attaches, through H-bonding, to PEI amines with a high rate of efficiency. The copolymer coating also facilitates systemic biodistribution and retention at the tumor site. Because of the high loading capacity and pH-dependent LY364947 release from the MSNPs, we achieved rapid entry of IV-injected liposomes and MSNPs at the PDAC tumor site. This two-wave approach provided effective shrinkage of the tumor xenografts beyond 25 days, compared to the treatment with free drug or gemcitabine-loaded liposomes only. Not only does this approach overcome stromal resistance to drug delivery in PDAC, but it also introduces the concept of using a stepwise engineered approach to address a range of biological impediments that interfere in nanocancer therapy in a spectrum of cancers.
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Affiliation(s)
- Huan Meng
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California, United States
- Address correspondence to: and
| | - Yang Zhao
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California, United States
| | - Juyao Dong
- Department of Chemistry & Biochemistry, University of California, Los Angeles, California, United States
| | - Min Xue
- Department of Chemistry & Biochemistry, University of California, Los Angeles, California, United States
| | - Yu-Shen Lin
- Center for Micro-Engineered Materials, The University of New Mexico, Albuquerque, New Mexico 87131
| | - Zhaoxia Ji
- California NanoSystems Institute, University of California, Los Angeles, California, United States
| | - Wilson X. Mai
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California, United States
| | - Haiyuan Zhang
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California, United States
| | - Chong Hyun Chang
- California NanoSystems Institute, University of California, Los Angeles, California, United States
| | - C. Jeffrey Brinker
- Self-Assembled Materials Department, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
- Department of Chemical and Nuclear Engineering, The University of New Mexico, Albuquerque, New Mexico 87131 and Sandia National Laboratories, Albuquerque, NM 87106
| | - Jeffrey I. Zink
- Department of Chemistry & Biochemistry, University of California, Los Angeles, California, United States
- California NanoSystems Institute, University of California, Los Angeles, California, United States
| | - Andre E. Nel
- Division of NanoMedicine, Department of Medicine, University of California, Los Angeles, California, United States
- California NanoSystems Institute, University of California, Los Angeles, California, United States
- Address correspondence to: and
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