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Zhang S, Wang Y, Kong Z, Zhang X, Sun B, Yu H, Chen Q, Luo C, Sun J, He Z. Pure photosensitizer-driven nanoassembly with core-matched PEGylation for imaging-guided photodynamic therapy. Acta Pharm Sin B 2021; 11:3636-47. [PMID: 34900542 DOI: 10.1016/j.apsb.2021.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/10/2021] [Accepted: 03/15/2021] [Indexed: 12/20/2022] Open
Abstract
Pure drug-assembled nanomedicines (PDANs) are currently under intensive investigation as promising nanoplatforms for cancer therapy. However, poor colloidal stability and less tumor-homing ability remain critical unresolved problems that impede their clinical translation. Herein, we report a core-matched nanoassembly of pyropheophorbide a (PPa) for photodynamic therapy (PDT). Pure PPa molecules are found to self-assemble into nanoparticles (NPs), and an amphiphilic PEG polymer (PPa-PEG2K) is utilized to achieve core-matched PEGylating modification via the π‒π stacking effect and hydrophobic interaction between the PPa core and the PPa-PEG2K shell. Compared to PCL-PEG2K with similar molecular weight, PPa-PEG2K significantly increases the stability, prolongs the systemic circulation and improves the tumor-homing ability and ROS generation efficiency of PPa-nanoassembly. As a result, PPa/PPa-PEG2K NPs exert potent antitumor activity in a 4T1 breast tumor-bearing BALB/c mouse xenograft model. Together, such a core-matched nanoassembly of pure photosensitizer provides a new strategy for the development of imaging-guided theragnostic nanomedicines.
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Key Words
- ACQ, aggregation caused quenching
- ALT, alanine aminotransferase
- AST, aspartate aminotransferase
- BUN, blood urine nitrogen
- CRE, creatinine
- Core-matched
- DCFH-DA, 2′,7′-dichlorofluorescein diacetate
- DDS, drug delivery system
- FBS, fetal bovine serum
- Imaging-guided
- NPs, nanoparticles
- NaCl, sodium chloride
- Nanoassembly
- PBS, phosphate buffer solution
- PDANs, pure drug-assembled nanomedicines
- PDT, photodynamic therapy
- PPa, pyropheophorbide a
- PS, photosensitizer
- Photodynamic therapy
- Pure drug-assembled nanomedicines
- Pure photosensitizer
- Pyropheophorbide a
- ROS, reactive oxygen species
- SDS, sodium dodecyl sulfate
- SOSG, Singlet Oxygen Sensor Green Reagent
- Self-assembly
- nano-DDS, nanoparticulate drug delivery systems
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Zhang S, Wang Z, Kong Z, Wang Y, Zhang X, Sun B, Zhang H, Kan Q, He Z, Luo C, Sun J. Photosensitizer-driven nanoassemblies of homodimeric prodrug for self-enhancing activation and synergistic chemo-photodynamic therapy. Theranostics 2021; 11:6019-6032. [PMID: 33897896 PMCID: PMC8058734 DOI: 10.7150/thno.59065] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/19/2021] [Indexed: 12/14/2022] Open
Abstract
Carrier-free prodrug-nanoassemblies have emerged as promising nanomedicines. In particular, the self-assembled nanoparticles (NPs) composed of homodimeric prodrugs with ultrahigh drug loading have attracted broad attention. However, most homodimeric prodrugs show poor self-assembly ability due to their symmetric structures. Herein, we developed photosensitizer-driven nanoassemblies of homodimeric prodrug for self-enhancing activation and chemo-photodynamic synergistic therapy. Methods: In this work, a pyropheophorbide a (PPa)-driven nanoassemblies of an oxidation-responsive cabazitaxel homodimer (CTX-S-CTX) was fabricated (pCTX-S-CTX/PPa NPs). The assembly mechanisms, aggregation-caused quenching (ACQ) effect alleviation, singlet oxygen generation, self-enhancing prodrug activation, cellular uptake, intracellular reactive oxygen species (ROS) generation and synergistic cytotoxicity of pCTX-S-CTX/PPa NPs were investigated in vitro. Moreover, the pharmacokinetics, ex vivo biodistribution and in vivo therapeutic efficacy of pCTX-S-CTX/PPa NPs were studied in mice bearing 4T1 tumor. Results: Interestingly, PPa was found to drive the assembly of CTX-S-CTX, which cannot self-assemble into stable NPs alone. Multiple intermolecular forces were found to be involved in the assembly process. Notably, the nanostructure was destroyed in the presence of endogenous ROS, significantly relieving the ACQ effect of PPa. In turn, ROS generated by PPa under laser irradiation together with the endogenous ROS synergistically promoted prodrug activation. As expected, the nanoassemblies demonstrated potent antitumor activity in a 4T1 breast cancer BALB/c mice xenograft model. Conclusion: Our findings offer a simple strategy to facilitate the assembly of homodimeric prodrugs and provide an efficient nanoplatform for chemo-photodynamic therapy.
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Yang B, Wei L, Wang Y, Li N, Ji B, Wang K, Zhang X, Zhang S, Zhou S, Yao X, Song H, Wu Y, Zhang H, Kan Q, Jin T, Sun J. Oxidation-strengthened disulfide-bridged prodrug nanoplatforms with cascade facilitated drug release for synergetic photochemotherapy. Asian J Pharm Sci 2020; 15:637-645. [PMID: 33193865 PMCID: PMC7610204 DOI: 10.1016/j.ajps.2019.09.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 09/05/2019] [Accepted: 09/13/2019] [Indexed: 01/17/2023] Open
Abstract
One of the major barriers in utilizing prodrug nanocarriers for cancer therapy is the slow release of parent drug in tumors. Tumor cells generally display the higher oxidative level than normal cells, and also displayed the heterogeneity in terms of redox homeostasis level. We previously found that the disulfide bond-linkage demonstrates surprising oxidation-sensitivity to form the hydrophilic sulfoxide and sulphone groups. Herein, we develop oxidation-strengthened prodrug nanosystem loaded with pyropheophorbide a (PPa) to achieve light-activatable cascade drug release and enhance therapeutic efficacy. The disulfide bond-driven prodrug nanosystems not only respond to the redox-heterogeneity in tumor, but also respond to the exogenous oxidant (singlet oxygen) elicited by photosensitizers. Once the prodrug nanoparticles (NPs) are activated under irradiation, they would undergo an oxidative self-strengthened process, resulting in a facilitated drug cascade release. The IC50 value of the PPa@PTX-S-S NPs without irradiation was 2-fold higher than those of NPs plus irradiation. In vivo, the PPa@PTX prodrug NPs display prolonged systemic circulation and increased accumulation in tumor site. The PPa@PTX-S-S NPs showed much higher efficiency than free PTX or the PPa@PTX-C-C NPs to suppress the growth of 4T1 tumors. Therefore, this novel oxidation-strengthened disulfide-bridged prodrug-nanosystem has a great potential in the enhanced efficacy of cancer synergetic photochemotherapy.
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Affiliation(s)
- Bin Yang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
- Department of Laboratory Medicine, The First Affiliated Hospital, China Medical University, Shenyang 110001, China
| | - Lin Wei
- Ministry of Education, Heilongjiang University, Harbin 150500, China
- Sino-Russian Joint Graduate School, Heilongjiang University, Harbin 150080, China
| | - Yuequan Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Na Li
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Bin Ji
- Department of Laboratory Medicine, The First Affiliated Hospital, China Medical University, Shenyang 110001, China
| | - Kaiyuan Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xuanbo Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Shenwu Zhang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Shuang Zhou
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiaohui Yao
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Hang Song
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yusheng Wu
- Department of Laboratory Medicine, The First Affiliated Hospital, China Medical University, Shenyang 110001, China
| | - Haotian Zhang
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Qiming Kan
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Tao Jin
- Ministry of Education, Heilongjiang University, Harbin 150500, China
- School of Life Sciences, Heilongjiang University, Harbin 150080, China
| | - Jin Sun
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
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Chen D, Lu S, Yang G, Pan X, Fan S, Xie X, Chen Q, Li F, Li Z, Wu S, He J. The seafood Musculus senhousei shows anti-influenza A virus activity by targeting virion envelope lipids. Biochem Pharmacol 2020; 177:113982. [PMID: 32305436 PMCID: PMC7162792 DOI: 10.1016/j.bcp.2020.113982] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 04/14/2020] [Indexed: 12/17/2022]
Abstract
Pyropheophorbide a (PPa) was isolated from the seafood of M. senhousei. PPa shows a potent activity against a broad panel of influenza A viral strains. The mechanism of PPa is to block the entry of virus in the early stage of infection. The target of PPa may be that of lipid bilayer of the enveloped viruses.
Marine environments are known to be a new source of structurally diverse bioactive molecules. In this paper, we identified a porphyrin derivative of Pyropheophorbide a (PPa) from the mussel Musculus senhousei (M. senhousei) that showed broad anti-influenza A virus activity in vitro against a panel of influenza A viral strains. The analysis of the mechanism of action indicated that PPa functions in the early stage of virus infection by interacting with the lipid bilayer of the virion, resulting in an alteration of membrane-associated functions, thereby blocking the entry of enveloped viruses into host cells. In addition, the anti-influenza A virus activity of PPa was further assessed in mice infected with the influenza A virus. The survival rate and mean survival time of mice were apparently prolonged compared with the control group which was not treated with the drug. Therefore, PPa and its derivatives may represent lead compounds for controlling influenza A virus infection.
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Affiliation(s)
- Daiwei Chen
- Group of Peptides and Natural Products Research, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China
| | - Shengsheng Lu
- Group of Peptides and Natural Products Research, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China
| | - Guang Yang
- Group of Peptides and Natural Products Research, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China
| | - Xiaoyan Pan
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - Sheng Fan
- Group of Peptides and Natural Products Research, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China
| | - Xi Xie
- Group of Peptides and Natural Products Research, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China
| | - Qi Chen
- Group of Peptides and Natural Products Research, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China
| | - Fangfang Li
- Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, China National Analytical Center, Guangzhou 510070, PR China
| | - Zhonghuang Li
- Group of Peptides and Natural Products Research, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China
| | - Shaohua Wu
- Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Jian He
- Group of Peptides and Natural Products Research, School of Pharmaceutical Sciences, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou 510515, China.
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