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Wang Q, Liu J, He L, Liu S, Yang P. Nanozyme: a rising star for cancer therapy. NANOSCALE 2023; 15:12455-12463. [PMID: 37462391 DOI: 10.1039/d3nr01976d] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
In recent years, nanozymes have attracted enormous attention due to their effectiveness in promoting various catalytic reactions. To date, thousands of nanozymes have been discovered, including oxidase-like nanozymes, peroxidase-like nanozymes, and catalase-like nanozymes, covering noble metal, transition metal, and carbon nanomaterials. These nanozymes have been widely applied in various fields, including environmental protection, biosensing and nanomedicine. There are many reviews about this rising star being used in analytical chemistry. However, few works about nanozymes were related to cancer therapy. In this study, we comprehensively summarize the latest research advances on the strategies for cancer therapy based on different nanozymes. With traditional cancer treatment (including chemotherapy, radiotherapy, phototherapy), nanozyme catalytic therapy exhibited a synergistic effect for limiting the growth of tumors. Opportunities and trends for nanozymes in future cancer therapy are also discussed.
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Affiliation(s)
- Qingqing Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China.
| | - Jing Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China.
| | - Liangcan He
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150080, China.
| | - Shaoqin Liu
- School of Medicine and Health, Harbin Institute of Technology, Harbin 150080, China.
| | - Piaoping Yang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China.
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2
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Chamani F, Barnett I, Pyle M, Shrestha T, Prakash P. A Review of In Vitro Instrumentation Platforms for Evaluating Thermal Therapies in Experimental Cell Culture Models. Crit Rev Biomed Eng 2022; 50:39-67. [PMID: 36374822 DOI: 10.1615/critrevbiomedeng.2022043455] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Thermal therapies, the modulation of tissue temperature for therapeutic benefit, are in clinical use as adjuvant or stand-alone therapeutic modalities for a range of indications, and are under investigation for others. During delivery of thermal therapy in the clinic and in experimental settings, monitoring and control of spatio-temporal thermal profiles contributes to an increased likelihood of inducing desired bioeffects. In vitro thermal dosimetry studies have provided a strong basis for characterizing biological responses of cells to heat. To perform an accurate in vitro thermal analysis, a sample needs to be subjected to uniform heating, ideally raised from, and returned to, baseline immediately, for a known heating duration under ideal isothermal condition. This review presents an applications-based overview of in vitro heating instrumentation platforms. A variety of different approaches are surveyed, including external heating sources (i.e., CO2 incubators, circulating water baths, microheaters and microfluidic devices), microwave dielectric heating, lasers or the use of sound waves. We discuss critical heating parameters including temperature ramp rate (heat-up phase period), heating accuracy, complexity, peak temperature, and technical limitations of each heating modality.
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Affiliation(s)
- Faraz Chamani
- Department of Electrical and Computer Engineering, Kansas State University, Manhattan, KS, USA
| | - India Barnett
- Department of Electrical and Computer Engineering, Kansas State University, Manhattan, KS, USA
| | - Marla Pyle
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA
| | - Tej Shrestha
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS, USA; Nanotechnology Innovation Center of Kansas State (NICKS), Kansas State University, Manhattan, KS, USA
| | - Punit Prakash
- Department of Electrical and Computer Engineering, Kansas State University, Manhattan, KS 66506, USA
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3
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Zhao G, Li J, Fangfang Lv, Wang X, Dong Q, Liu D, Zhang J, Li Z, Zhou X, Liu H. Biomimetic Platform Based on Mesoporous Platinum for Multisynergistic Cancer Therapy. ACS Biomater Sci Eng 2021; 7:5154-5164. [PMID: 34636537 DOI: 10.1021/acsbiomaterials.1c00912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Photothermal therapy (PTT) using nanoparticles is one of the research hotspots in the field of cancer therapy. However, the thermal resistance of tumor cells and the elimination of nanoparticles by the body's immune system reduce their therapeutic effect. Therefore, it is essential to reduce heat resistance, improve their biocompatibility, and reduce the clearance of the immune system. In this work, we constructed a biomimetic platform for cancer therapy based on heat shock protein (HSP) inhibitors, 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG))-loaded and platelet membrane (PM)-coated mesoporous platinum nanoparticles (MPNPs). First, MPNPs with the properties of chemotherapy and PTT were synthesized to load 17-DMAG (17-DMAG/MPNPs). Then, they were coated with PM for tumor targeting and improved biocompatibility to obtain the final bionic nanotherapy platform 17-DMAG/MPNPs@PM. The results in vivo and in vitro showed that 17-DMAG/MPNPs@PM could accumulate in the tumor and effectively inhibit the growth of tumor cells. Therefore, the biomimetic nanotherapy system is expected to provide new ideas for cancer treatment.
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Affiliation(s)
- Gaoqian Zhao
- College of Pharmaceutical Science, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding 071002, China.,Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Jiaxin Li
- College of Pharmaceutical Science, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding 071002, China.,Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Fangfang Lv
- College of Pharmaceutical Science, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding 071002, China.,Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Xiaochun Wang
- Affiliated Hospital of Hebei University, Baoding 071000, China
| | - Qing Dong
- College of Pharmaceutical Science, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding 071002, China.,Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
| | - Dandan Liu
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.,College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China
| | - Jinchao Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China.,College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China
| | - Zhenhua Li
- Dongguan Institute of Clinical Cancer Research, Affiliated Dongguan Hospital, Southern Medical University, Dongguan 523059, China
| | - Xiaohan Zhou
- Dongguan Institute of Clinical Cancer Research, Affiliated Dongguan Hospital, Southern Medical University, Dongguan 523059, China
| | - Huifang Liu
- College of Pharmaceutical Science, Key Laboratory of Pharmaceutical Quality Control of Hebei Province, Hebei University, Baoding 071002, China.,Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding 071002, China
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4
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Liu X, Liu Y, Guo Y, Shi W, Sun Y, He Z, Shen Y, Zhang X, Xiao H, Ge D. Metabolizable pH/H 2O 2 dual-responsive conductive polymer nanoparticles for safe and precise chemo-photothermal therapy. Biomaterials 2021; 277:121115. [PMID: 34488118 DOI: 10.1016/j.biomaterials.2021.121115] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/27/2021] [Accepted: 08/28/2021] [Indexed: 01/10/2023]
Abstract
Conductive polymers with high near-infrared absorbance, have attracted considerable attention in the design of intelligent nanomedicines for cancer therapy, especially chemo-photothermal therapy. However, the unknown long-term biosafety of conductive polymers in vivo due to non-degradability hinders their clinic application. Herein, a H2O2-triggered degradable conductive polymer, polyacrylic acid (PAA) stabilized poly(pyrrole-3-COOH) (PAA@PPyCOOH), is fabricated to form nanoparticles with doxorubicin (DOX) for safe and precise chemo-phototherapy. The PAA@PPyCOOH was found to be an ideal photothermal nano-agent with good dispersity, excellent biocompatibility and high photothermal conversion efficiency (56%). After further loading of doxorubicin (DOX), PAA@PPyCOOH@DOX demonstrates outstanding photothermal performance, as well as pH/H2O2 dual-responsive release of DOX in tumors with an acidic and overexpressed H2O2 microenvironment, resulting in superior chemo-photothermal therapeutic effects. The degradation mechanism of PAA@PPyCOOH is proposed to be the ring-opening reaction between the pyrrole-3-COOH unit and H2O2. More importantly, the nanoparticles can be specifically degraded by excess H2O2 in tumor, and the degradation products were confirmed to be excreted via urine and feces. In vivo therapeutic evaluation of chemo-photothermal therapy reveals tumor growth of 4T1 breast cancer model is drastically inhibited and no apparent side-effect is detected, thus indicating substantial potential in clinic application.
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Affiliation(s)
- Xin Liu
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Xiamen Key Laboratory of Fire Retardant Materials/Fujian Provincial Key Laboratory of Fire Retardant Materials, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, China; Department of Pharmacy, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde, Foshan), Foshan, 528300, PR China
| | - Yang Liu
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Xiamen Key Laboratory of Fire Retardant Materials/Fujian Provincial Key Laboratory of Fire Retardant Materials, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Yijun Guo
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Xiamen Key Laboratory of Fire Retardant Materials/Fujian Provincial Key Laboratory of Fire Retardant Materials, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Wei Shi
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Xiamen Key Laboratory of Fire Retardant Materials/Fujian Provincial Key Laboratory of Fire Retardant Materials, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, China.
| | - Yanan Sun
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Xiamen Key Laboratory of Fire Retardant Materials/Fujian Provincial Key Laboratory of Fire Retardant Materials, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Zi He
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Xiamen Key Laboratory of Fire Retardant Materials/Fujian Provincial Key Laboratory of Fire Retardant Materials, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Yuqing Shen
- Transfusion Department, Woman and Children's Hospital, School of Medicine, Xiamen University, Xiamen, 361003, China
| | - Xiuming Zhang
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Xiamen Key Laboratory of Fire Retardant Materials/Fujian Provincial Key Laboratory of Fire Retardant Materials, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, China
| | - Haihua Xiao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Dongtao Ge
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Xiamen Key Laboratory of Fire Retardant Materials/Fujian Provincial Key Laboratory of Fire Retardant Materials, Department of Biomaterials, College of Materials, Xiamen University, Xiamen, 361005, China.
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5
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Cashin P, Sugarbaker PH. Hyperthermic intraperitoneal chemotherapy (HIPEC) for colorectal and appendiceal peritoneal metastases: lessons learned from PRODIGE 7. J Gastrointest Oncol 2021; 12:S120-S128. [PMID: 33968432 DOI: 10.21037/jgo-2020-05] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The treatment for peritoneal metastases from appendiceal, colon and rectal cancer (MO1) has relied on cytoreductive surgery (CRS) to remove all visible evidence of disease plus a perioperative chemotherapy for the entire abdomen to eliminate microscopic residual disease. Using the results obtained from the PRODIGE 7 randomized controlled trial, methodological issues were discussed and possible improvements to the hyperthermic intraperitoneal chemotherapy (HIPEC) with oxaliplatin were sought. Possible methodological and pharmacologic flaws were identified. Several methodological flaws included the sample size, cross-over option, neoadjuvant chemotherapy use and timing of the peritoneal disease evaluation. The sample size issue raised the question of what the minimal clinically relevant benefit we want in future trials. Neoadjuvant FOLFOX may have induced acquired drug resistance to oxaliplatin. Several pharmacological issues were identified including limited 5-fluorouracil exposure as well as limited oxaliplatin peritoneal exposure time. Insufficient 5-fluorouracil accompanied the oxaliplatin as only a bolus dose was used and continuous 5-FU infusion has previously been an integral part of oxaliplatin treatment. Finally, only approximately one-half of the oxaliplatin entered body tissues or tumor. Three suggestions from the lessons learned from a critique of PRODIGE 7 were offered as adjustments to the HIPEC protocol. The Efficacy of HIPEC, a perioperative FOLFOX or a return to HIPEC with mitomycin C were described.
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Affiliation(s)
| | - Paul H Sugarbaker
- Center for Gastrointestinal Malignancies, MedStar Washington Hospital Center, Washington, DC, USA
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6
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Lyon PC, Suomi V, Jakeman P, Campo L, Coussios C, Carlisle R. Quantifying cell death induced by doxorubicin, hyperthermia or HIFU ablation with flow cytometry. Sci Rep 2021; 11:4404. [PMID: 33623089 PMCID: PMC7902827 DOI: 10.1038/s41598-021-83845-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 02/04/2021] [Indexed: 12/31/2022] Open
Abstract
Triggered release and targeted drug delivery of potent anti-cancer agents using hyperthermia-mediated focused-ultrasound (FUS) is gaining momentum in the clinical setting. In early phase studies, tissue biopsy samples may be harvested to assess drug delivery efficacy and demonstrate lack of instantaneous cell death due to FUS exposure. We present an optimised tissue cell recovery method and a cell viability assay, compatible with intra-cellular doxorubicin. Flow cytometry was used to determine levels of cell death with suspensions comprised of: (i) HT29 cell line exposed to hyperthermia (30 min at 47 °C) and/or doxorubicin, or ex-vivo bovine liver tissue exposed to (ii) hyperthermia (up to 2 h at 45 °C), or (iii) ablative high intensity FUS (HIFU). Flow cytometric analysis revealed maximal cell death in HT29 receiving both heat and doxorubicin insults and increases in both cell granularity (p < 0.01) and cell death (p < 0.01) in cells recovered from ex-vivo liver tissue exposed to hyperthermia and high pressures of HIFU (8.2 MPa peak-to-peak free-field at 1 MHz) relative to controls. Ex-vivo results were validated with microscopy using pan-cytokeratin stain. This rapid, sensitive and highly quantitative cell-viability method is applicable to the small masses of liver tissue typically recovered from a standard core biopsy (5–20 mg) and may be applied to tissues of other histological origins including immunostaining.
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Affiliation(s)
- Paul Christopher Lyon
- Nuffield Department of Surgical Sciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK. .,Institute of Biomedical Engineering, University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK.
| | - Visa Suomi
- Institute of Biomedical Engineering, University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK
| | - Philip Jakeman
- Department of Oncology, University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK
| | - Leticia Campo
- Department of Oncology, University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK
| | - Constantin Coussios
- Institute of Biomedical Engineering, University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK
| | - Robert Carlisle
- Institute of Biomedical Engineering, University of Oxford, Old Road Campus Research Building, Oxford, OX3 7DQ, UK
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7
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Yang B, Dai Z, Zhang G, Hu Z, Yao X, Wang S, Liu Q, Zheng X. Ultrasmall Ternary FePtMn Nanocrystals with Acidity-Triggered Dual-Ions Release and Hypoxia Relief for Multimodal Synergistic Chemodynamic/Photodynamic/Photothermal Cancer Therapy. Adv Healthc Mater 2020; 9:e1901634. [PMID: 32959536 DOI: 10.1002/adhm.201901634] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 07/24/2020] [Indexed: 12/26/2022]
Abstract
Multimodal imaging-guided synergistic anticancer strategies have attracted increasing attention for efficient diagnosis and therapy of cancer. Herein, a multifunctional nanotheranostic agent FePtMn-Ce6/FA (FPMCF NPs) is constructed by covalently anchoring photosensitizer chlorin e6 (Ce6) and targeting molecule folic acid (FA) on ultrasmall homogeneous ternary FePtMn nanocrystals. Response to tumor microenvironment (TME), FPMCF NPs can release Fe2+ to catalyze H2 O2 into •OH by Fenton reaction and simultaneously catalyze hydrogen peroxide (H2 O2 ) into O2 to overcome the tumor hypoxia barrier. Released O2 is further catalyzed into 1 O2 under 660 nm laser irradiation with Ce6. Thus, the FPMCF NPs exhibit superior dual-ROS oxidization capability including ferroptosis chemodynamic oxidization and 1 O2 -based photodynamic oxidization. Interestingly, FPMCF NPs reveal strong photothermal conversion efficiency exposed to an 808 nm laser, which can assist dual-ROS oxidization to suppress solid tumor remarkably. Additionally, Mn2+ can be released from FPMCF NPs to enhance longitudinal relaxivity (T1 -weighted magnetic resonance (MR) imaging) and Fe-synergistic transverse relaxivity (T2 -weighted MR imaging), which is convenient for diagnosis of solid tumors. Meanwhile, the fluorescent/photothermal (FL/PT) imaging function of FPMCF NPs can also accurately monitor tumor location. Therefore, FPMCF NPs with multimodal MR/FL/PT imaging-guided synergistic chemodynamic/photodynamic/photothermal cancer therapy capability have potential bioapplication in bionanomedicine field.
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Affiliation(s)
- Baochan Yang
- Key Laboratory of Functional Nanomaterials and Technology in Universities of Shandong College of Chemistry and Chemical Engineering Linyi University Linyi 276000 P. R. China
- College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 P. R. China
| | - Zhichao Dai
- Key Laboratory of Functional Nanomaterials and Technology in Universities of Shandong College of Chemistry and Chemical Engineering Linyi University Linyi 276000 P. R. China
| | - Gaorui Zhang
- Department of Medical Imaging Weifang Medical University Weifang 261053 P. R. China
| | - Zunfu Hu
- Key Laboratory of Functional Nanomaterials and Technology in Universities of Shandong College of Chemistry and Chemical Engineering Linyi University Linyi 276000 P. R. China
| | - Xiuxiu Yao
- Key Laboratory of Functional Nanomaterials and Technology in Universities of Shandong College of Chemistry and Chemical Engineering Linyi University Linyi 276000 P. R. China
- College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 P. R. China
| | - Shan Wang
- Key Laboratory of Functional Nanomaterials and Technology in Universities of Shandong College of Chemistry and Chemical Engineering Linyi University Linyi 276000 P. R. China
- College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 P. R. China
| | - Qingyun Liu
- College of Chemical and Environmental Engineering Shandong University of Science and Technology Qingdao 266590 P. R. China
| | - Xiuwen Zheng
- Key Laboratory of Functional Nanomaterials and Technology in Universities of Shandong College of Chemistry and Chemical Engineering Linyi University Linyi 276000 P. R. China
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8
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Zhao W, Li Z, Yang H, Ren C, Lv F, Gao S, Ma H, Jin Y, Ge K, Liu D, Zhang J, Liu H. Mesoporous Platinum Nanotherapeutics for Combined Chemo-photothermal Cancer Treatment. ACS APPLIED BIO MATERIALS 2019; 2:3269-3278. [PMID: 35030769 DOI: 10.1021/acsabm.9b00250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
| | | | - Hua Yang
- Affiliated Hospital of Hebei University, Baoding 071000, China
| | | | | | - Shutao Gao
- College of Science, Hebei Agricultural University, Baoding 071002, China
| | - Huanyun Ma
- College of Basic Medical Science, Hebei University, Baoding 071000, China
| | - Yi Jin
- College of Basic Medical Science, Hebei University, Baoding 071000, China
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9
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Liu X, Xie Z, Shi W, He Z, Liu Y, Su H, Sun Y, Ge D. Polynorepinephrine Nanoparticles: A Novel Photothermal Nanoagent for Chemo-Photothermal Cancer Therapy. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19763-19773. [PMID: 31088083 DOI: 10.1021/acsami.9b03458] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Novel photothermal nanoagents (PTNAs) with excellent photothermal performance, smart-responsive property, and biocompatibility are in urgent need for precise chemo-photothermal cancer therapy. Herein, polynorepinephrine nanoparticles (PNE NPs) with a high photothermal conversion efficiency (η) of 808 nm laser (67%), pH/thermal responsibility, and little to no long-term toxicity were synthesized from an endogenic neurotransmitter norepinephrine. Compared to their analogues, polydopamine NPs, a widely used PTNA, PNE NPs exhibited a higher η value (enhanced 1.63-fold) and better cellular uptake efficiency (enhanced 2.57-fold). After modifying with polyethylene glycol (PEG) and loading with doxorubicin (DOX), PNE-PEG@DOX could realize responsive release of DOX under either a cytolysosome pH microenvironment (pH 5.0) or an 808 nm laser irradiation, resulting in an enhanced chemotherapeutic efficacy of DOX. Besides, in vivo combination therapy leads to nearly complete ablation of tumor tissues, while no significant side effects were found in normal tissues. Hence, this intelligent and biocompatible nanoplatform based on PNE NPs holds great potential in promoting the clinic transformation of precise chemo-photothermal cancer therapy.
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Affiliation(s)
- Xin Liu
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials , Xiamen University , Xiamen 361005 , China
| | - Zhuo Xie
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials , Xiamen University , Xiamen 361005 , China
| | - Wei Shi
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials , Xiamen University , Xiamen 361005 , China
| | - Zi He
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials , Xiamen University , Xiamen 361005 , China
| | - Yang Liu
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials , Xiamen University , Xiamen 361005 , China
| | - Huling Su
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials , Xiamen University , Xiamen 361005 , China
| | - Yanan Sun
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials , Xiamen University , Xiamen 361005 , China
| | - Dongtao Ge
- Key Laboratory of Biomedical Engineering of Fujian Province University/Research Center of Biomedical Engineering of Xiamen, Department of Biomaterials, College of Materials , Xiamen University , Xiamen 361005 , China
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10
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Liao S, Hu X, Liu Z, Lin Y, Liang R, Zhang Y, Li Q, Li Y, Liao X. Synergistic action of microwave-induced mild hyperthermia and paclitaxel in inducing apoptosis in the human breast cancer cell line MCF-7. Oncol Lett 2019; 17:603-615. [PMID: 30655807 PMCID: PMC6313200 DOI: 10.3892/ol.2018.9629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 10/15/2018] [Indexed: 11/05/2022] Open
Abstract
Microwave mild hyperthermia and paclitaxel have been reported to be involved in variety of solid tumors. However, rare related researches have been accomplished via directly killing tumor cells using thermochemotherapy. In order to clarify the potential synergy between microwave-induced hyperthermia at temperatures <41°C and paclitaxel chemotherapy for inhibiting the growth of the human breast cancer cell line MCF-7, an MTT assay was used. The MCF-7 cells cultured in vitro were treated with paclitaxel alone, treated with microwave-induced hyperthermia for 2 h alone (at 40, 40.5 or 41°C), or treated with a combination of paclitaxel and 2 h of hyperthermia (at 40, 40.5 or 41°C). Flow cytometry was used to determine the cell apoptosis rate and it was demonstrated that paclitaxel decreased cell viability in a dose-dependent manner. Alone, hyperthermia for 2 h at 41°C induced apoptosis in MCF-7 cells, to a greater extent compared with hyperthermia for 2 h at 40.0 or 40.5°C (P<0.05). Together, paclitaxel and 2 h of hyperthermia at 40.5°C induced significantly increased apoptosis compared with either treatment alone (P<0.05). Increasing the temperature to 41°C in combination with paclitaxel increased the apoptotic ratio from 12.21±1.02% to 16.36±2.39%. The apoptotic ratio correlated positively with hyperthermia temperature and duration following hyperthermia, as did the synergistic effect obtained by combining hyperthermia and paclitaxel. Notably, the combination of 5 µg/ml paclitaxel and 2 h of hyperthermia at 40°C enhanced MCF-7 cell proliferation. Mild hyperthermia may exert anti-tumor effects by inducing apoptosis, and combining hyperthermia with paclitaxel synergistically induces apoptosis. Paclitaxel dose and hyperthermia temperature require careful optimization, as low-dose paclitaxel combined with hyperthermia at an insufficient temperature may enhance breast cancer proliferation.
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Affiliation(s)
- Sina Liao
- Department of The First Chemotherapy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Xiaohua Hu
- Department of Medical Oncology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Zhihui Liu
- Department of The First Chemotherapy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yan Lin
- Department of The First Chemotherapy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Rong Liang
- Department of The First Chemotherapy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yumei Zhang
- Department of The First Chemotherapy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Qian Li
- Department of The First Chemotherapy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Yongqiang Li
- Department of The First Chemotherapy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Xiaoli Liao
- Department of The First Chemotherapy, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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Deng X, Li K, Cai X, Liu B, Wei Y, Deng K, Xie Z, Wu Z, Ma P, Hou Z, Cheng Z, Lin J. A Hollow-Structured CuS@Cu 2 S@Au Nanohybrid: Synergistically Enhanced Photothermal Efficiency and Photoswitchable Targeting Effect for Cancer Theranostics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701266. [PMID: 28745411 DOI: 10.1002/adma.201701266] [Citation(s) in RCA: 186] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 06/04/2017] [Indexed: 06/07/2023]
Abstract
It is of great importance in drug delivery to fabricate multifunctional nanocarriers with intelligent targeting properties, for cancer diagnosis and therapy. Herein, hollow-structured CuS@Cu2 S@Au nanoshell/satellite nanoparticles are designed and synthesized for enhanced photothermal therapy and photoswitchable targeting theranostics. The remarkably improved photothermal conversion efficiency of CuS@Cu2 S@Au under 808 nm near-infrared (NIR) laser irradiation can be explained by the reduced bandgap and more circuit paths for electron transitions for CuS and Cu2 S modified with Au nanoparticles, as calculated by the Vienna ab initio simulation package, based on density functional theory. By modification of thermal-isomerization RGD targeting molecules and thermally sensitive copolymer on the surface of nanoparticles, the transition of the shielded/unshielded mode of RGD (Arg-Gly-Asp) targeting molecules and shrinking of the thermally sensitive polymer by NIR photoactivation can realize a photoswitchable targeting effect. After loading an anticancer drug doxorubicin in the cavity of CuS@Cu2 S@Au, the antitumor therapy efficacy is greatly enhanced by combining chemo- and photothermal therapy. The reported nanohybrid can also act as a photoacoustic imaging agent and an NIR thermal imaging agent for real-time imaging, which provides a versatile platform for multifunctional theranostics and stimuli-responsive targeted cancer therapy.
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Affiliation(s)
- Xiaoran Deng
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Kai Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Xuechao Cai
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Bin Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Yi Wei
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Kerong Deng
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhongxi Xie
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhijian Wu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Ping'an Ma
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Zhiyao Hou
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Ziyong Cheng
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
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Meggyeshazi N, Andocs G, Balogh L, Balla P, Kiszner G, Teleki I, Jeney A, Krenacs T. DNA fragmentation and caspase-independent programmed cell death by modulated electrohyperthermia. Strahlenther Onkol 2014; 190:815-22. [DOI: 10.1007/s00066-014-0617-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Accepted: 11/25/2013] [Indexed: 12/21/2022]
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Inhibitory effects of mild hyperthermia plus docetaxel therapy on ER(+/−) breast cancer cells and action mechanisms. ACTA ACUST UNITED AC 2013; 33:870-876. [DOI: 10.1007/s11596-013-1214-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/30/2013] [Indexed: 10/25/2022]
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Gkigkitzis I. Theoretical aspects and modelling of cellular decision making, cell killing and information-processing in photodynamic therapy of cancer. BMC Med Genomics 2013; 6 Suppl 3:S3. [PMID: 24565264 PMCID: PMC3981166 DOI: 10.1186/1755-8794-6-s3-s3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background The aim of this report is to provide a mathematical model of the mechanism for making binary fate decisions about cell death or survival, during and after Photodynamic Therapy (PDT) treatment, and to supply the logical design for this decision mechanism as an application of rate distortion theory to the biochemical processing of information by the physical system of a cell. Methods Based on system biology models of the molecular interactions involved in the PDT processes previously established, and regarding a cellular decision-making system as a noisy communication channel, we use rate distortion theory to design a time dependent Blahut-Arimoto algorithm where the input is a stimulus vector composed of the time dependent concentrations of three PDT related cell death signaling molecules and the output is a cell fate decision. The molecular concentrations are determined by a group of rate equations. The basic steps are: initialize the probability of the cell fate decision, compute the conditional probability distribution that minimizes the mutual information between input and output, compute the cell probability of cell fate decision that minimizes the mutual information and repeat the last two steps until the probabilities converge. Advance to the next discrete time point and repeat the process. Results Based on the model from communication theory described in this work, and assuming that the activation of the death signal processing occurs when any of the molecular stimulants increases higher than a predefined threshold (50% of the maximum concentrations), for 1800s of treatment, the cell undergoes necrosis within the first 30 minutes with probability range 90.0%-99.99% and in the case of repair/survival, it goes through apoptosis within 3-4 hours with probability range 90.00%-99.00%. Although, there is no experimental validation of the model at this moment, it reproduces some patterns of survival ratios of predicted experimental data. Conclusions Analytical modeling based on cell death signaling molecules has been shown to be an independent and useful tool for prediction of cell surviving response to PDT. The model can be adjusted to provide important insights for cellular response to other treatments such as hyperthermia, and diseases such as neurodegeneration.
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Garcia MP, Cavalheiro JRT, Fernandes MH. Acute and long-term effects of hyperthermia in B16-F10 melanoma cells. PLoS One 2012; 7:e35489. [PMID: 22532856 PMCID: PMC3332049 DOI: 10.1371/journal.pone.0035489] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 03/16/2012] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE Hyperthermia uses exogenous heat induction as a cancer therapy. This work addresses the acute and long-term effects of hyperthermia in the highly metastatic melanoma cell line B16-F10. MATERIALS AND METHODS Melanoma cells were submitted to one heat treatment, 45°C for 30 min, and thereafter were kept at 37°C for an additional period of 14 days. Cultures maintained at 37°C were used as control. Cultures were assessed for the heat shock reaction. RESULTS Immediately after the heat shock, cells began a process of fast degradation, and, in the first 24 h, cultures showed decreased viability, alterations in cell morphology and F-actin cytoskeleton organization, significant reduction in the number of adherent cells, most of them in a process of late apoptosis, and an altered gene expression profile. A follow-up of two weeks after heat exposure showed that viability and number of adherent cells remained very low, with a high percentage of early apoptotic cells. Still, heat-treated cultures maintained a low but relatively constant population of cells in S and G(2)/M phases for a long period after heat exposure, evidencing the presence of metabolically active cells. CONCLUSION The melanoma cell line B16-F10 is susceptible to one hyperthermia treatment at 45°C, with significant induced acute and long-term effects. However, a low but apparently stable percentage of metabolically active cells survived long after heat exposure.
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Affiliation(s)
- Mónica Pereira Garcia
- Laboratório de Farmacologia e Biocompatibilidade Celular, Faculdade de Medicina Dentária, Universidade do Porto (FMDUP), Porto, Portugal
| | | | - Maria Helena Fernandes
- Laboratório de Farmacologia e Biocompatibilidade Celular, Faculdade de Medicina Dentária, Universidade do Porto (FMDUP), Porto, Portugal
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RADZI R, OSAKI T, TSUKA T, IMAGAWA T, MINAMI S, OKAMOTO Y. Morphological Study in B16F10 Murine Melanoma Cells after Photodynamic Hyperthermal Therapy with Indocyanine Green (ICG). J Vet Med Sci 2012; 74:465-72. [DOI: 10.1292/jvms.11-0467] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Rozanaliza RADZI
- The United Graduate School of Veterinary Science, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Tomohiro OSAKI
- Department of Veterinary Surgery, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Takeshi TSUKA
- Department of Veterinary Diagnostic Imaging, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Tomohiro IMAGAWA
- Department of Veterinary Diagnostic Imaging, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Saburo MINAMI
- Department of Veterinary Surgery, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Yoshiharu OKAMOTO
- Department of Veterinary Neurology and Oncology, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
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Nijhuis EHA, Poot AA, Feijen J, Vermes I. Induction of apoptosis by heat and gamma-radiation in a human lymphoid cell line; role of mitochondrial changes and caspase activation. Int J Hyperthermia 2007; 22:687-98. [PMID: 17390998 DOI: 10.1080/02656730601045409] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
PURPOSE The aim of the study was to investigate the molecular mechanisms involved in apoptosis of human promyelocytic cells (HL60) induced by hyperthermia and to compare this to radiation-induced apoptosis as a reference model. MATERIALS AND METHODS Apoptosis of HL60 cells was induced by heat-treatment (430C during 1 h) or by gamma-radiation (8 Gy) and followed at increasing time periods after treatment with Annexin V binding to phosphatidylserine (PS). The transition of the mitochondrial membrane potential (delta psim) was estimated by the extent of mitochondrial JC-1 uptake. Bcl-2 and Bax protein expression levels were monitored using fluorescent-labelled antibodies. Caspase activation was studied using a fluorochrome-labelled pan-caspase inhibitor (FLICA), which also allowed one to study the kinetics of the apoptotic cascade. RESULTS After heat-treatment or irradiation of HL60 cells, a decreased delta psim as well as PS membrane expression were detectable after 8 h. Bcl-2 and Bax protein expression levels were decreased and increased, respectively, 1 h after heat-treatment or irradiation. The apoptotic rate of HL60 cells, as measured by the FLICA binding, was faster with heat-treatment as compared to gamma-irradiation. Addition of a pan-caspase inhibitor prevented PS externalization after heat-treatment but not after irradiation. The presence of a pan-caspase inhibitor did not influence the decrease of delta psim both after heat-treatment and gamma-irradiation. However, the addition of the specific caspase-2 inhibitor zVDVAD-fmk prevented the mitochondrial breakdown after heat-treatment. Inhibition of caspase-2 had no effect on the gamma-irradiation induced apoptosis. CONCLUSION These results suggest that the commitment to apoptosis in HL60 cells after heat-treatment is started by mitochondrial membrane transition involving the Bcl-2 family members and is mainly executed in a caspase-dependent pathway. The results suggest that caspase-2 plays a key role in the heat-induced apoptosis.
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Affiliation(s)
- E H A Nijhuis
- University of Twente, Faculty of Science and Technology, Polymer Chemistry and Biomaterials Group, Enschede, The Netherlands
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Guo J, Zhu J, Sheng X, Wang X, Qu L, Han Y, Liu Y, Zhang H, Huo L, Zhang S, Lin B, Yang Z. Intratumoral injection of dendritic cells in combination with local hyperthermia induces systemic antitumor effect in patients with advanced melanoma. Int J Cancer 2007; 120:2418-25. [PMID: 17294445 DOI: 10.1002/ijc.22551] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Dendritic cells (DC) are potent antigen-presenting cells that can present tumor antigens chaperoned by heat shock proteins (HSPs), while local hyperthermia (LHT) can increase the expression of HSPs. In this study, we determine if intratumoral injection of immature DC after LHT (LHT+IT-DC) induces systemic antitumor immunity in patients with advanced melanoma, and investigate the potential immunological mechanisms involved in the treatments. Patients were randomly assigned to intratumoral administration of autologous immature DC triweekly, with (LHT+IT-DC, arm A, n = 9) or without (IT-DC, arm B, n = 9) LHT. Our results showed that there were no grade 3/4 toxicities. The time to progress (TTP) of arm A was 5 months, significantly longer than that in arm B (2 months, p < 0.05). However, the overall survival time had no statistical difference (13 months vs. 6 months, p > 0.05) between the 2 groups. Our ELISPOT assay showed a significantly increased melanoma-specific IFN-gamma production in arm A, suggesting that LHT+IT-DC was more effective in the induction of cytotoxic T lymphocytes (CTL) than IT-DC alone. Furthermore, we detected an increased HSPs expression 4 hr after the first LHT, an enhanced Th1/Th2 chemokines production 24 hr after the first LHT+IT-DC treatment, a promoted migration of DC to afferent lymph nodes, and a decreased infiltration of regulatory T cells (CD4(+)CD25(+)) and an increased infiltration of active CTL (CD8(+)CD28(+)) 48 hr after the third DC injection in arm A patients. Therefore, LHT+IT-DC can induce effective specific antitumor immunity and facilitate a Th1-polarized immune response in patients with advanced melanoma.
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Affiliation(s)
- Jun Guo
- Department of Renal Cancer and Melanoma, Peking University School of Oncology, Beijing Cancer Hospital, Beijing, PR China.
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Venkataraman S, Wagner BA, Jiang X, Wang HP, Schafer FQ, Ritchie JM, Patrick BC, Oberley LW, Buettner GR. Overexpression of manganese superoxide dismutase promotes the survival of prostate cancer cells exposed to hyperthermia. Free Radic Res 2005; 38:1119-32. [PMID: 15512801 DOI: 10.1080/10715760400010470] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
It has been hypothesized that exposure of cells to hyperthermia results in an increased flux of reactive oxygen species (ROS), primarily superoxide anion radicals, and that increasing antioxidant enzyme levels will result in protection of cells from the toxicity of these ROS. In this study, the prostate cancer cell line, PC-3, and its manganese superoxide dismutase (MnSOD)-overexpressing clones were subjected to hyperthermia (43 degrees C, 1 h). Increased expression of MnSOD increased the mitochondrial membrane potential (MMP). Hyperthermic exposure of PC-3 cells resulted in increased ROS production, as determined by aconitase inactivation, lipid peroxidation, and H2O2 formation with a reduction in cell survival. In contrast, PC-3 cells overexpressing MnSOD had less ROS production, less lipid peroxidation, and greater cell survival compared to PC-3 Wt cells. Since MnSOD removes superoxide, these results suggest that superoxide free radical or its reaction products are responsible for part of the cytotoxicity associated with hyperthermia and that MnSOD can reduce cellular injury and thereby enhance heat tolerance.
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Affiliation(s)
- Sujatha Venkataraman
- Department of Radiation Oncology, Free Radical and Radiation Biology Program, EMRB 68, The University of Iowa, Iowa City, IA 52242-1101, USA.
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White MG, Emery M, Nonner D, Barrett JN. Caspase activation contributes to delayed death of heat-stressed striatal neurons. J Neurochem 2004; 87:958-68. [PMID: 14622126 DOI: 10.1046/j.1471-4159.2003.02077.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Hyperthermia can contribute to brain damage both during development and post-natally. We used rat embryonic striatal neurons in culture to study mechanisms underlying hyperthermia-induced neuronal death. Heat stress at 43 degrees C for 2 h produced no obvious signs of damage during the first 12 h after the stress, but more than 50% of the neurons died during the next 3 days. More than 40% of the neurons had activated caspases 24 h following the heat stress. Caspase-3 activity increased with a delay of more than 10 h following cessation of the heat stress, reaching a peak at approximately 18 h. Neuronal death measured 1-3 days after the stress was reduced by the general caspase inhibitors qVD-OPH (10-20 microm) and zVAD-fmk (50-100 microm). These inhibitors were protective even when added 9 h after cessation of the heat stress, consistent with the delayed activation of caspases. In contrast, blockers of Na+ channels and ionotropic glutamate receptors did not reduce the heat-induced death, indicating that glutamate excitotoxicity was not required for this neuronal death. These results show that the neuronal death produced by heat stress has characteristics of apoptosis, and that caspase inhibitors can delay this death.
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Affiliation(s)
- Michael G White
- Department of Physiology and Biophysics, University of Miami School of Medicine, Miami, Florida 33101, USA
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