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Gao S, Pu N, Yin H, Li J, Chen Q, Yang M, Lou W, Chen Y, Zhou G, Li C, Li G, Yan Z, Liu L, Yu J, Wang X. Radiofrequency ablation in combination with an mTOR inhibitor restrains pancreatic cancer growth induced by intrinsic HSP70. Ther Adv Med Oncol 2020; 12:1758835920953728. [PMID: 32973929 PMCID: PMC7491221 DOI: 10.1177/1758835920953728] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 08/06/2020] [Indexed: 02/06/2023] Open
Abstract
Background Radiofrequency ablation (RFA) is widely used in palliative therapy of malignant cancers. Several studies have shown its applicability and safety for locally advanced pancreatic cancer (LAPC). The objective of this study was to modify the current regimen to improve its therapeutic effect. Methods Immune cell subtypes and related cytokines were quantified to uncover the immune pattern changes post-RFA treatment. Then, high-throughput proteome analysis was performed to identify differentially expressed proteins associated with RFA, which were further validated in in vitro and in vivo experiments. Finally, a combined therapy was tested in a murine model to observe its therapeutic effect. Results In preclinical murine models of RFA treatment, no significant therapeutic benefit was observed following RFA treatment. However, the proportion of tumor-infiltrating CD8+ T cells was significantly increased, whereas that of regulatory T cells (Tregs) was decreased post-RFA treatment, which indicated a beneficial anti-tumor environment. To identify the mechanism, high-throughput mass spectrum was obtained that identified heat shock protein 70 (HSP70) as the top differentially expressed protein. HSP70 expression in residual cancer cells was significantly increased post-RFA treatment, which notably promoted pancreatic cancer growth. Elevated HSP70 promoted cell proliferation by activating AKT-mTOR signaling. Finally, RFA treatment combined with an mTOR inhibitor exerted a synergetic repressive effect on tumor growth in the preclinical murine cancer model. Conclusions RFA treatment in combination with mTOR signaling blockade can not only promote tumor immune response, but also restrain residual cancer cell proliferation. Such a combination may be a promising and effective therapeutic strategy for LAPC patients.
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Affiliation(s)
- Shanshan Gao
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ning Pu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hanlin Yin
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Junhao Li
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qiangda Chen
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Minjie Yang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wenhui Lou
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yi Chen
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Guofeng Zhou
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, China
| | - Changyu Li
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Guoping Li
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhiping Yan
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lingxiao Liu
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Jun Yu
- Department of Surgery, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, 600 N. Wolfe Street, Baltimore, MD 21287, USA
| | - Xiaolin Wang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China
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He X, Chen X, Liu L, Zhang Y, Lu Y, Zhang Y, Chen Q, Ruan C, Guo Q, Li C, Sun T, Jiang C. Sequentially Triggered Nanoparticles with Tumor Penetration and Intelligent Drug Release for Pancreatic Cancer Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1701070. [PMID: 29876225 PMCID: PMC5979633 DOI: 10.1002/advs.201701070] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 01/25/2018] [Indexed: 05/11/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is the most aggressive malignancy with a five year survival rate of <5%. The aberrant expression of extracellular matrix (ECM) in the tumor stroma forms a compact physical barrier, which that leads to insufficient extravasation and penetration of nanosized therapies. To overcome the severe resistance of PDAC to conventional therapies, a sequentially triggered nanoparticle (aptamer/cell-penetrating peptide-camptothecin prodrug, i.e., Apt/CPP-CPTD NPs) with tumor penetration and intelligent drug release profile is designed. An ECM component (tenescin-C) targeting aptamer (GBI-10) is modified onto stroma-permeable cell-penetrating peptide (CPP) for the in vivo CPP camouflage and PDAC-homing. In PDAC stroma, tenascin-C can detach GBI-10 from CPP and exposed CPP can facilitate further PDAC penetration and tumor cell endocytosis. After being endocytosed into PDAC cells, intracellular high redox potential can further trigger controlled chemodrug release. Apt/CPP-CPTD NPs show both deep penetration in vitro 3D PDAC spheroids and in vivo tumor sections. The relatively mild in vitro cytotoxicity and excellent in vivo antitumor efficacy proves the improved PDAC targeting drug delivery and decreased systemic toxicity. The design of ECM-redox sequentially triggered stroma permeable NPs may provide a practical approach for deep penetration of PDAC and enhanced drug delivery efficacy.
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Affiliation(s)
- Xi He
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Xinli Chen
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Lisha Liu
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Yu Zhang
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Yifei Lu
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Yujie Zhang
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Qinjun Chen
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Chunhui Ruan
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Qin Guo
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Chao Li
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Tao Sun
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
| | - Chen Jiang
- Key Laboratory of Smart Drug DeliveryMinistry of EducationState Key Laboratory of Medical NeurobiologyDepartment of PharmaceuticsSchool of PharmacyFudan UniversityShanghai200032China
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Wang Q, Li J, An S, Chen Y, Jiang C, Wang X. Magnetic resonance-guided regional gene delivery strategy using a tumor stroma-permeable nanocarrier for pancreatic cancer. Int J Nanomedicine 2015; 10:4479-90. [PMID: 26203245 PMCID: PMC4508066 DOI: 10.2147/ijn.s84930] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Gene therapy is a very promising technology for treatment of pancreatic ductal adenocarcinoma (PDAC). However, its application has been limited by the abundant stromal response in the tumor microenvironment. The aim of this study was to prepare a dendrimer-based gene-free loading vector with high permeability in the tumor stroma and explore an imaging-guided local gene delivery strategy for PDAC to promote the efficiency of targeted gene delivery. METHODS The experimental protocol was approved by the animal ethics committee of Zhongshan Hospital, Fudan University. Third-generation dendrigraft poly-L-lysines was selected as the nanocarrier scaffold, which was modified by cell-penetrating peptides and gadolinium (Gd) chelates. DNA plasmids were loaded with these nanocarriers via electrostatic interaction. The cellular uptake and loaded gene expression were examined in MIA PaCa-2 cell lines in vitro. Permeability of the nanoparticles in the tumor stroma and transfected gene distribution in vivo were studied using a magnetic resonance imaging-guided delivery strategy in an orthotopic nude mouse model of PDAC. RESULTS The nanocarriers were synthesized with a dendrigraft poly-L-lysine to polyethylene glycol to DTPA ratio of 1:3.4:8.3 and a mean diameter of 110.9±7.7 nm. The luciferases were strictly expressed in the tumor, and the luminescence intensity in mice treated by Gd-DPT/plasmid luciferase (1.04×10(4)±9.75×10(2) p/s/cm(2)/sr) was significantly (P<0.05) higher than in those treated with Gd-DTPA (9.56×10(2)±6.15×10 p/s/cm(2)/sr) and Gd-DP (5.75×10(3)± 7.45×10(2) p/s/cm(2)/sr). Permeability of the nanoparticles modified by cell-penetrating peptides was superior to that of the unmodified counterpart, demonstrating the improved capability of nanoparticles for diffusion in tumor stroma on magnetic resonance imaging. CONCLUSION This study demonstrated that an image-guided gene delivery system with a stroma-permeable gene vector could be a potential clinically translatable gene therapy strategy for PDAC.
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Affiliation(s)
- Qingbing Wang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, People’s Republic of China
| | - Jianfeng Li
- Key Laboratory of Smart Drug Delivery, Ministry of Education, Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China
| | - Sai An
- Key Laboratory of Smart Drug Delivery, Ministry of Education, Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China
| | - Yi Chen
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Chen Jiang
- Key Laboratory of Smart Drug Delivery, Ministry of Education, Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, People’s Republic of China
| | - Xiaolin Wang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China
- Shanghai Institute of Medical Imaging, Fudan University, Shanghai, People’s Republic of China
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