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Turkkol A, Can Karanlık C, Calıskan SG, Bilgin MD, Erdoğmuş A, Güzel E. Hybrid Sono-Photodynamic Combination Therapy Mediated by Water-Soluble Gallium Phthalocyanine Enhances the Cytotoxic Effect against Breast Cancer Cell Lines. ACS APPLIED BIO MATERIALS 2024; 7:2725-2733. [PMID: 38591733 DOI: 10.1021/acsabm.3c01078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Breast cancer is a life-threatening disease that is gaining increasing importance due to its rising incidence, highlighting the need for novel treatment methods with the least disadvantages. Recently, scientists have focused on developing therapeutic treatment modalities for effective cancer treatment. In contrast to conventional cancer treatment methods such as immunotherapy, surgery, chemotherapy, or radiotherapy, photodynamic therapy (PDT) is gaining prominence. Besides, sonodynamic treatment (SDT) is a noninvasive therapeutic approach that uses ultrasound to induce high tissue penetration. In both methods, sensitizers are activated to generate cytotoxic reactive oxygen species such as •OH and 1O2. In particular, the combined use of hybrid and complementary treatment methods has become an important modality in cancer treatment in recent years. Sono-photodynamic therapy (SPDT), which is an important method applied in combination with PDT and SDT, has started to be preferred in terms of reducing potential side effects compared to monotherapy. One of the most important types of sensitizers used in PDT and SDT is known as phthalocyanines (Pcs). Motivated by these facts, this research presents the sono-photochemical, in vitro cytotoxicity, and theoretical evaluation of water-soluble gallium phthalocyanine (GaPc). The results indicate that the quantum yield of the generation of singlet oxygen increased in sono-photochemical studies (ΦΔ = 0.94), compared to photochemical studies (ΦΔ = 0.72). In vitro analyses revealed that GaPc did not exhibit significant cytotoxic effects at the specified varying concentration doses (1-20 μM). Furthermore, GaPc-mediated SPDT triggered cell death by inducing reactive oxygen species formation in the breast cancer cell line (MCF-7). The interaction mechanism of the GaPc with EGFR and VEGFR2 target proteins, which are critical regulators of metastasis, proliferation, and angiogenesis, was investigated by molecular docking simulation. GaPc has effective binding affinities against target proteins, and this affinity was found to be the highest against VEGFR2. Molecular docking results showed a good correlation with the obtained biological results. Eventually, this molecular building of the efficient water-soluble phthalocyanine-based sensitizer is a potential therapeutic for PDT, SDT, and SPDT applications.
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Affiliation(s)
- Aysegul Turkkol
- Department of Biophysics, Faculty of Medicine, Aydın Adnan Menderes University, 09010 Aydın, Turkiye
| | - Ceren Can Karanlık
- Department of Chemistry, Yıldız Technical University, 34220 İstanbul, Turkiye
- Health Biotechnology Joint Research and Application Center of Excellence, 34220 Istanbul, Turkiye
| | - Serife Gökce Calıskan
- Department of Physics, Faculty of Sciences, Aydın Adnan Menderes University, 09010 Aydın, Turkiye
| | - Mehmet Dincer Bilgin
- Department of Biophysics, Faculty of Medicine, Aydın Adnan Menderes University, 09010 Aydın, Turkiye
| | - Ali Erdoğmuş
- Department of Chemistry, Yıldız Technical University, 34220 İstanbul, Turkiye
- Health Biotechnology Joint Research and Application Center of Excellence, 34220 Istanbul, Turkiye
| | - Emre Güzel
- Department of Engineering Fundamental Sciences, Faculty of Technology, Sakarya University of Applied Sciences, 54050 Sakarya, Turkiye
- Biomedical Technologies Application and Research Center (BIYOTAM), Sakarya University of Applied Sciences, 54050 Sakarya, Turkiye
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2
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Wang H, Lai Y, Li D, Karges J, Zhang P, Huang H. Self-Assembly of Erlotinib-Platinum(II) Complexes for Epidermal Growth Factor Receptor-Targeted Photodynamic Therapy. J Med Chem 2024; 67:1336-1346. [PMID: 38183413 DOI: 10.1021/acs.jmedchem.3c01889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2024]
Abstract
Due to cell mutation and self-adaptation, the application of clinical drugs with early epidermal growth factor receptor (EGFR)-targeted inhibitors is severely limited. To overcome this limitation, herein, the synthesis and in-depth biological evaluation of an erlotinib-platinum(II) complex as an EGFR-targeted anticancer agent is reported. The metal complex is able to self-assemble inside an aqueous solution and readily form nanostructures with strong photophysical properties. While being poorly toxic toward healthy cells and upon treatment in the dark, the compound was able to induce a cytotoxic effect in the very low micromolar range upon irradiation against EGFR overexpressing (drug resistant) human lung cancer cells as well as multicellular tumor spheroids. Mechanistic insights revealed that the compound was able to selectively degrade the EGFR using the lysosomal degradation pathway upon generation of singlet oxygen at the EGFR. We are confident that this work will open new avenues for the treatment of EGFR-overexpressing tumors.
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Affiliation(s)
- Haobing Wang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yidan Lai
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
- School of Pharmaceutical Science, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
| | - Dan Li
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Johannes Karges
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Bochum 44780, Germany
| | - Pingyu Zhang
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Huaiyi Huang
- School of Pharmaceutical Science, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
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3
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Yu J, Li H, Fang T, Yun C, Liu X, Xu J, Jiang X, Cai X. Harnessing the Lysosomal Sorting Signals of the Cation-Independent Mannose-6-Phosphate Receptor for Targeted Degradation of Membrane Proteins. J Am Chem Soc 2023; 145:19107-19119. [PMID: 37552887 DOI: 10.1021/jacs.3c07687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Membrane proteins are a crucial class of therapeutic targets that remain challenging to modulate using traditional occupancy-driven inhibition strategies or current proteolysis-targeting degradation approaches. Here, we report that the inherent endolysosomal sorting machinery can be harnessed for the targeted degradation of membrane proteins. A new degradation technique, termed signal-mediated lysosome-targeting chimeras (SignalTACs), was developed by genetically fusing the signaling motif from the cation-independent mannose-6-phosphate receptor (CI-M6PR) to a membrane protein binder. Antibody-based SignalTACs were constructed with the CI-M6PR signal peptides fused to the C-terminus of both heavy and light chains of IgG. We demonstrated the scope of this platform technology by degrading five pathogenesis-related membrane proteins, including HER2, EGFR, PD-L1, CD20, and CD71. Furthermore, two simplified constructs of SignalTACs, nanobody-based and peptide-based SignalTACs, were created and shown to promote the lysosomal degradation of target membrane proteins. Compared to the parent antibodies, SignalTACs exhibited significantly higher efficiency in inhibiting tumor cell growth both in vitro and in vivo. This work provides a simple, general, and robust strategy for degrading membrane proteins with molecular precision and may represent a powerful platform with broad research and therapeutic applications.
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Affiliation(s)
- Jinfeng Yu
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 East Outer Ring Road, Guangzhou 510006, China
| | - Haonan Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 East Outer Ring Road, Guangzhou 510006, China
| | - Tong Fang
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 East Outer Ring Road, Guangzhou 510006, China
| | - Chengyu Yun
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 East Outer Ring Road, Guangzhou 510006, China
| | - Xue Liu
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 East Outer Ring Road, Guangzhou 510006, China
| | - Jingyao Xu
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 East Outer Ring Road, Guangzhou 510006, China
| | - Xianxing Jiang
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 East Outer Ring Road, Guangzhou 510006, China
| | - Xiaoqing Cai
- School of Pharmaceutical Sciences, Sun Yat-sen University, 132 East Outer Ring Road, Guangzhou 510006, China
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4
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Ahmadi M, Ahmadyousefi Y, Salimi Z, Mirzaei R, Najafi R, Amirheidari B, Rahbarizadeh F, Kheshti J, Safari A, Soleimani M. Innovative Diagnostic Peptide-Based Technologies for Cancer Diagnosis: Focus on EGFR-Targeting Peptides. ChemMedChem 2023; 18:e202200506. [PMID: 36357328 DOI: 10.1002/cmdc.202200506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 11/08/2022] [Indexed: 11/12/2022]
Abstract
Active targeting using biological ligands has emerged as a novel strategy for the targeted delivery of diagnostic agents to tumor cells. Conjugating functional targeting moieties with diagnostic probes can increase their accumulation in tumor cells and tissues, enhancing signal detection and, thus, the sensitivity of diagnosis. Due to their small size, ease of chemical synthesis and site-specific modification, high tissue penetration, low immunogenicity, rapid blood clearance, low cost, and biosafety, peptides offer several advantages over antibodies and proteins in diagnostic applications. Epidermal growth factor receptor (EGFR) is one of the most promising cancer biomarkers for actively targeting diagnostic and therapeutic agents to tumor cells due to its active involvement and overexpression in various cancers. Several peptides for EGFR-targeting have been identified in the last decades, which have been obtained by multiple means including derivation from natural proteins, phage display screening, positional scanning synthetic combinatorial library, and in silico screening. Many studies have used these peptides as a targeting moiety for diagnosing different cancers in vitro, in vivo, and in clinical trials. This review summarizes the progress of EGFR-targeting peptide-based assays in the molecular diagnosis of cancer.
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Affiliation(s)
- Mohammad Ahmadi
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Hamadan University of Medical Sciences, Hamadan, Iran.,Research Center for Molecular Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Yaghoub Ahmadyousefi
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Hamadan University of Medical Sciences, Hamadan, Iran.,Research Center for Molecular Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Zahra Salimi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Rasoul Mirzaei
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran.,Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Rezvan Najafi
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Hamadan University of Medical Sciences, Hamadan, Iran.,Research Center for Molecular Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Bagher Amirheidari
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran.,Extremophile and Productive Microorganisms Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Fatemeh Rahbarizadeh
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Javad Kheshti
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Armin Safari
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Meysam Soleimani
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
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Xiong J, Xue EY, Wu Q, Lo PC, Ng DKP. A tetrazine-responsive isonitrile-caged photosensitiser for site-specific photodynamic therapy. J Control Release 2023; 353:663-674. [PMID: 36503072 DOI: 10.1016/j.jconrel.2022.12.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 12/01/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
We report herein a versatile and efficient bioorthogonal strategy to actualise targeted delivery and site-specific activation of photosensitisers for precise antitumoural photodynamic therapy. The strategy involved the use of an isonitrile-caged distyryl boron dipyrromethene-based photosensitiser, labelled as NC-DSBDP, of which the photoactivities could be specifically activated upon conversion of the meso ester substituent to carboxylate initiated by the [4 + 1] cycloaddition with a tetrazine derivative. By using two tetrazines conjugated with a galactose moiety or the GE11 peptide, labelled as gal-Tz and GE11-Tz, we could selectively label the cancer cells overexpressed with the asialoglycoprotein receptor and the epidermal growth factor receptor respectively. Upon encountering the internalised NC-DSBDP, these tetrazines triggered the "ester-to-carboxylate" transformation of this compound, activating its fluorescence and reactive oxygen species generation inside the target cells. The bioorthogonal activation was also demonstrated in vivo, leading to effective photo-eradication of the tumour in nude mice.
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Affiliation(s)
- Junlong Xiong
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Evelyn Y Xue
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Qianqian Wu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China; Department of Biomedical Sciences, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Pui-Chi Lo
- Department of Biomedical Sciences, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China.
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6
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Jing R, Wang Q, Chen L, Li G, Li R, Zhang L, Zhang H, Zuo B, Seow Y, Qiao X, Wang B, Xu J, Chen J, Song T, Yin H. Functional imaging and targeted drug delivery in mice and patient tumors with a cell nucleolus-localizing and tumor-targeting peptide. Biomaterials 2022; 289:121758. [DOI: 10.1016/j.biomaterials.2022.121758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/31/2022] [Accepted: 08/18/2022] [Indexed: 11/30/2022]
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Malacarne MC, Gariboldi MB, Caruso E. BODIPYs in PDT: A Journey through the Most Interesting Molecules Produced in the Last 10 Years. Int J Mol Sci 2022; 23:ijms231710198. [PMID: 36077597 PMCID: PMC9456687 DOI: 10.3390/ijms231710198] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 08/31/2022] [Indexed: 11/19/2022] Open
Abstract
Over the past 30 years, photodynamic therapy (PDT) has shown great development. In the clinical setting the few approved molecules belong almost exclusively to the porphyrin family; but in the scientific field, in recent years many researchers have been interested in other families of photosensitizers, among which BODIPY has shown particular interest. BODIPY is the acronym for 4,4-difluoro-4-bora-3a, 4a-diaza-s-indacene, and is a family of molecules well-known for their properties in the field of imaging. In order for these molecules to be used in PDT, a structural modification is necessary which involves the introduction of heavy atoms, such as bromine and iodine, in the beta positions of the pyrrole ring; this change favors the intersystem crossing, and increases the 1O2 yield. This mini review focused on a series of structural changes made to BODIPYs to further increase 1O2 production and bioavailability by improving cell targeting or photoactivity efficiency.
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8
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Judmann B, Braun D, Schirrmacher R, Wängler B, Fricker G, Wängler C. Toward the Development of GE11-Based Radioligands for Imaging of Epidermal Growth Factor Receptor-Positive Tumors. ACS OMEGA 2022; 7:27690-27702. [PMID: 35967067 PMCID: PMC9366781 DOI: 10.1021/acsomega.2c03407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
The epidermal growth factor receptor (EGFR) is closely associated with tumor development and progression and thus an important target structure for imaging and therapy of various tumors. As a result of its important role in malignancies of various origins and the fact that antibody-based compounds targeting the EGFR have significant drawbacks in terms of in vivo pharmacokinetics, several attempts have been made within the last five years to develop peptide-based EGFR-specific radioligands based on the GE11 scaffold. However, none of these approaches have shown convincing results so far, which has been proposed to be attributed to different potential challenges associated with the GE11 lead structure: first, an aggregation of radiolabeled peptides, which might prevent their interaction with their target receptor, or second, a relatively low affinity of monomeric GE11, necessitating its conversion into a multimeric or polymeric form to achieve adequate EGFR-targeting properties. In the present work, we investigated if these aforementioned points are indeed critical and if the EGFR-targeting ability of GE11 can be improved by choosing an appropriate hydrophilic molecular design or a peptide multimer system to obtain a promising radiopeptide for the visualization of EGFR-overexpressing malignancies by positron emission tomography (PET). For this purpose, we developed several monovalent 68Ga-labeled GE11-based agents, a peptide homodimer and a homotetramer to overcome the challenges associated with GE11. The developed ligands were successfully labeled with 68Ga3+ in high radiochemical yields of ≥97% and molar activities of 41-104 GBq/μmol. The resulting radiotracers presented log D(7.4) values between -2.17 ± 0.21 and -3.79 ± 0.04 as well as a good stability in human serum with serum half-lives of 112 to 217 min for the monovalent radiopeptides and 84 and 62 min for the GE11 homodimer and homotetramer, respectively. In the following in vitro studies, none of the 68Ga-labeled radiopeptides demonstrated a considerable EGF receptor-specific uptake in EGFR-positive A431 cells. Moreover, none of the agents was able to displace [125I]I-EGF from the EGFR in competitive displacement assays in the same cell line in concentrations of up to 1 mM, whereas the endogenous receptor ligand hEGF demonstrated a high affinity of 15.2 ± 3.3 nM. These results indicate that it is not the aggregation of the GE11 sequence that seems to be the factor limiting the usefulness of the peptide as basis for radiotracer design but the limited affinity of monovalent and small homomultivalent GE11-based radiotracers to the EGFR. This highlights that the development of small-molecule GE11-based radioligands is not promising.
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Affiliation(s)
- Benedikt Judmann
- Biomedical
Chemistry, Clinic of Radiology and Nuclear Medicine, Medical Faculty
Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
- Molecular
Imaging and Radiochemistry, Clinic of Radiology and Nuclear Medicine,
Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Diana Braun
- Biomedical
Chemistry, Clinic of Radiology and Nuclear Medicine, Medical Faculty
Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
- Molecular
Imaging and Radiochemistry, Clinic of Radiology and Nuclear Medicine,
Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Ralf Schirrmacher
- Department
of Oncology, Division of Oncological Imaging, University of Alberta, 11560 University Avenue, T6G 1Z2 Edmonton, AB, Canada
| | - Björn Wängler
- Molecular
Imaging and Radiochemistry, Clinic of Radiology and Nuclear Medicine,
Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
| | - Gert Fricker
- Institute
of Pharmacy and Molecular Biotechnology, University of Heidelberg, Im Neuenheimer Feld 329, 69120 Heidelberg, Germany
| | - Carmen Wängler
- Biomedical
Chemistry, Clinic of Radiology and Nuclear Medicine, Medical Faculty
Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim, Germany
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Challenges for the application of EGFR-targeting peptide GE11 in tumor diagnosis and treatment. J Control Release 2022; 349:592-605. [PMID: 35872181 DOI: 10.1016/j.jconrel.2022.07.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 07/15/2022] [Accepted: 07/16/2022] [Indexed: 11/20/2022]
Abstract
Abnormal regulation of cell signaling pathways on cell survival, proliferation and migration contributes to the development of malignant tumors. Among them, epidermal growth factor receptor (EGFR) is one of the most important biomarkers in many types of malignant solid tumors. Its over-expression and mutation status can be served as a biomarker to identify patients who can be benifit from EGFR tyrosine kinase inhibitors and anti-EGFR monocloncal antibody (mAb) therapy. For decades, researches on EGFR targeted ligands were actively carried out to identify potent candidates for cancer therapy. An ideal EGFR ligand can competitively inhibit the binding of endogenous growth factor, such as epidermal growth factor (EGF) and transforming growth factor-α(TGF-α) to EGFR, thus block EGFR signaling pathway and downregulate EGFR expression. Alternatively, conjugation of EGFR ligands on drug delivery systems (DDS) can facilitate targeting delivery of therapeutics or diagnostic agents to EGFR over-expression tumors via EGFR-mediated endocytosis. GE11 peptide is one of the potent EGFR ligand screened from a phage display peptide library. It is a dodecapeptide that can specifically binds to EGFR with high affinity and selectivity. GE11 has been widely used in the diagnosis and targeted delivery of drugs for radiotherapy, genetherapy and chemotherpy against EGFR positive tumors. In this review, the critical factors affecting the in vivo and in vitro targeting performance of GE11 peptide, including ligand-receptor intermolecular force, linker bond properties and physiochemical properties of carrier materials, are detailedly interpreted. This review provides a valuable vision for the rational design and optimization of GE11-based active targeting strategies for cancer treatment, and it will promote the translation studies of GE11 from lab research to clinical application.
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Xue EY, Yang C, Fong WP, Ng DKP. Site-Specific Displacement-Driven Activation of Supramolecular Photosensitizing Nanoassemblies for Antitumoral Photodynamic Therapy. ACS APPLIED MATERIALS & INTERFACES 2022; 14:14903-14915. [PMID: 35333503 DOI: 10.1021/acsami.1c23740] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The delivery and activation of photosensitizers in a specific manner is crucial in photodynamic therapy. For an antitumoral application, it can confine the photodynamic action on the cancer cells, thereby enhancing the treatment efficacy and reducing the side effects. We report herein a novel supramolecular photosensitizing nanosystem that can be specifically activated in cancer cells and tumors that overexpress epidermal growth factor receptor (EGFR). It involves the self-assembly of the amphiphilic host-guest complex of a β-cyclodextrin-conjugated phthalocyanine-based photosensitizer (Pc-CD) and a ferrocene-substituted poly(ethylene glycol) (Mn = 2000) (Fc-PEG) in aqueous media. The resulting nanosystem Pc-CD@Fc-PEG with a hydrodynamic diameter of 124-147 nm could not emit fluorescence and generate reactive oxygen species due to the self-quenching effect and the ferrocene-based quencher. Upon interactions with molecules of adamantane substituted with an EGFR-targeting peptide (Ad-QRH*) in water and in EGFR-positive HT29 and A431 cells, the ferrocene guest species were displaced, resulting in disassembly of the nanoparticles and restoration of these photoactivities. The half-maximal inhibitory concentration values were down to 1.24 μM (for HT29 cells). The nanosystem Pc-CD@Fc-PEG could also be activated in an Ad-QRH*-treated HT29 tumor in nude mice, leading to increased intratumoral fluorescence intensity and effective eradication of the tumor upon laser irradiation. The results showed that this two-step supramolecular approach can actualize site-specific photosensitization and minimize nonspecific phototoxicity in a general photodynamic treatment.
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de Paiva IM, Vakili MR, Soleimani AH, Tabatabaei Dakhili SA, Munira S, Paladino M, Martin G, Jirik FR, Hall DG, Weinfeld M, Lavasanifar A. Biodistribution and Activity of EGFR Targeted Polymeric Micelles Delivering a New Inhibitor of DNA Repair to Orthotopic Colorectal Cancer Xenografts with Metastasis. Mol Pharm 2022; 19:1825-1838. [PMID: 35271294 PMCID: PMC9175178 DOI: 10.1021/acs.molpharmaceut.1c00918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The disruption of polynucleotide kinase/phosphatase (PNKP) in colorectal cancer (CRC) cells deficient in phosphatase and tensin homolog (PTEN) is expected to lead to the loss of cell viability by a process known as synthetic lethality. In previous studies, we have reported on the encapsulation of a novel inhibitor of PNKP, namely, A83B4C63, in polymeric micelles and its activity in slowing the growth of PTEN-deficient CRC cells as well as subcutaneous xenografts. In this study, to enhance drug delivery and specificity to CRC tumors, the surface of polymeric micelles carrying A83B4C63 was modified with GE11, a peptide targeting epidermal growth factor receptor (EGFR) overexpressed in about 70% of CRC tumors. Using molecular dynamics (MD) simulations, we assessed the binding site and affinity of GE11 for EGFR. The GE11-modified micelles, tagged with a near-infrared fluorophore, showed enhanced internalization by EGFR-overexpressing CRC cells in vitro and a trend toward increased primary tumor homing in an orthotopic CRC xenograft in vivo. In line with these observations, the GE11 modification of polymeric micelles was shown to positively contribute to the improved therapeutic activity of encapsulated A83B4C63 against HCT116-PTEN-/- cells in vitro and that of orthotopic CRC xenograft in vivo. In conclusion, our results provided proof of principle evidence for the potential benefit of EGFR targeted polymeric micellar formulations of A83B4C63 as monotherapeutics for aggressive and metastatic CRC tumors but at the same time highlighted the need for the development of EGFR ligands with improved physiological stability and EGFR binding.
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Affiliation(s)
- Igor Moura de Paiva
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2EZ, Canada
| | - Mohammad Reza Vakili
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2EZ, Canada
| | - Amir Hasan Soleimani
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2EZ, Canada
| | | | - Sirazum Munira
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2EZ, Canada
| | - Marco Paladino
- Department of Chemistry, Faculty of Science, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | | | | | - Dennis G Hall
- Department of Chemistry, Faculty of Science, University of Alberta, Edmonton, AB T6G 2G2, Canada
| | - Michael Weinfeld
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 1Z2, Canada
| | - Afsaneh Lavasanifar
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2EZ, Canada.,Department of Chemical and Materials Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB T6G 2H5, Canada
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袁 临, 马 利, 刘 润, 齐 伟, 张 栌, 王 贵, 王 宇. [Computer simulation of molecular docking between methylene blue and some proteins of Porphyromonas gingivalis]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2022; 54:23-30. [PMID: 35165464 PMCID: PMC8860636 DOI: 10.19723/j.issn.1671-167x.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To study the binding target of photosensitizer and bacteria in antimicrobial photodynamic therapy with computer-simulated target prediction and molecular docking research methods and to calculate the binding energy. METHODS The protein names of Porphyromonas gingivalis (Pg) were obtained and summarized in Uniprot database and RCSB PDB database; the structure diagrams of methy-lene blue were screened in SciFinder database, PubChem database, ChemSpider database, and Chemical Book, and ChemBioDraw software was used to draw and confirm the three-dimensional structure for target prediction and Cytoscape software was used to build a visual network diagram; a protein interaction network was searched and built between the methylene blue target and the common target of Pg in the String database; then we selected FimA, Mfa4, RgpB, and Kgp K1 proteins, used AutoDock software to calculate the docking energy of methylene blue and the above-mentioned proteins and performed molecular docking. RESULTS The target prediction results showed that there were 19 common targets between the 268 potential targets of methylene blue and 1 865 Pg proteins. The 19 targets were: groS, radA, rplA, dps, fabH, pyrG, thyA, panC, RHO, frdA, ileS, bioA, def, ddl, TPR, murA, lepB, cobT, and gyrB. The results of the molecular docking showed that methylene blue could bind to 9 sites of FimA protein, with a binding energy of -6.26 kcal/mol; with 4 sites of Mfa4 protein and hydrogen bond formation site GLU47, and the binding energy of -5.91 kcal/mol, the binding energy of LYS80, the hydrogen bond forming site of RgpB protein, was -5.14 kcal/mol, and the binding energy of 6 sites of Kgp K1 protein and the hydrogen bond forming site GLY1114 of -5.07 kcal/mol. CONCLUSION Computer simulation of target prediction and molecular docking technology can initially reveal the binding, degree of binding and binding sites of methylene blue and Pg proteins. This method provides a reference for future research on the screening of binding sites of photosensitizers to cells and bacteria.
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Affiliation(s)
- 临天 袁
- 北京大学口腔医学院·口腔医院综合科, 国家口腔疾病临床医学研究中心, 口腔数字化医疗技术和材料国家工程实验室, 口腔数字医学北京市重点实验室,北京 100081Department of General Medicine, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
- 北京大学口腔医学院·口腔医院口腔医学数字化研究中心,北京 100081Center for Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - 利沙 马
- 北京大学口腔医学院·口腔医院口腔医学数字化研究中心,北京 100081Center for Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - 润园 刘
- 大连医科大学口腔医学院牙体牙髓科,辽宁大连 116044Department of Endodontics, College of Stomatology, Dalian Medical University, Dalian 116044, Liaoning, China
| | - 伟 齐
- 北京大学口腔医学院·口腔医院综合科, 国家口腔疾病临床医学研究中心, 口腔数字化医疗技术和材料国家工程实验室, 口腔数字医学北京市重点实验室,北京 100081Department of General Medicine, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
- 北京大学口腔医学院·口腔医院口腔医学数字化研究中心,北京 100081Center for Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - 栌丹 张
- 北京大学口腔医学院·口腔医院口腔医学数字化研究中心,北京 100081Center for Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
- 北京大学口腔医学院·口腔医院门诊部,北京 100081First Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - 贵燕 王
- 北京大学口腔医学院·口腔医院口腔医学数字化研究中心,北京 100081Center for Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
- 北京大学口腔医学院·口腔医院儿童口腔科,北京 100081Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - 宇光 王
- 北京大学口腔医学院·口腔医院口腔医学数字化研究中心,北京 100081Center for Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China
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13
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Bashant MM, Mitchell SM, Hart LR, Lebedenko CG, Banerjee IA. In silico studies of interactions of peptide-conjugated cholesterol metabolites and betulinic acid with EGFR, LDR, and N-terminal fragment of CCKA receptors. J Mol Model 2021; 28:16. [PMID: 34961887 DOI: 10.1007/s00894-021-05007-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 12/14/2021] [Indexed: 11/25/2022]
Abstract
In this work, we designed three new ligands by conjugating cholesterol metabolites 3-hydroxy-5-cholestenoic acid (3-HC) and 3-oxo-4-cholestenoic acid (3-OC) and the natural tri-terpenoid betulinic acid with the tumor-targeting peptide YHWYGYTPQNVI. Molecular interactions with the unconjugated peptide and the conjugates were examined with three receptors that are commonly overexpressed in pancreatic adenocarcinoma cells using ligand docking and molecular dynamics. This study demonstrated the utility of the designed conjugates as a valuable scaffold for potentially targeting EGFR and LDLR receptors. Our results indicate that the conjugates showed strong binding affinities and formation of stable complexes with EGFR, while the unconjugated peptide, BT-peptide conjugate, an 3-HC-peptide conjugate showed the formation of fairly stable complexes with LDLR receptor. For EGFR, two receptor kinase domains were explored. Interactions with the N-terminal domain of CCKA-R were relatively weaker. For LDLR, binding occurred in the beta-propeller region. For the N-terminal fragment of CCKA-R, the conjugates induced significant conformational changes in the receptor. The molecular dynamic simulations for 100 ns demonstrate that BT-peptide conjugates and the unconjugated peptide had the highest binding and formed the most stable complexes with EGFR. RMSD and trajectory analyses indicate that these molecules transit to a dynamically stable configuration in most cases within 60 ns. NMA analysis indicated that amongst the conjugates that showed relatively higher interactions with the respective receptors, the highest potential for deformability was seen for the N-terminal-47 amino acid region of the CCKA-R receptor with and the lowest for the LDLR-receptor. Thus, the newly designed compounds may be evaluated in the future toward developing drug delivery materials for targeting tumor cells overexpressing LDLR or EGFR.
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Affiliation(s)
- Madeline M Bashant
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA
| | - Saige M Mitchell
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA
| | - Lucy R Hart
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA
| | - Charlotta G Lebedenko
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA
| | - Ipsita A Banerjee
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY, 10458, USA.
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14
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Xue EY, Shi WJ, Fong WP, Ng DKP. Targeted Delivery and Site-Specific Activation of β-Cyclodextrin-Conjugated Photosensitizers for Photodynamic Therapy through a Supramolecular Bio-orthogonal Approach. J Med Chem 2021; 64:15461-15476. [PMID: 34662121 DOI: 10.1021/acs.jmedchem.1c01505] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Targeted delivery of photosensitizers using hydrophilic and tumor-directing carriers and site-specific activation of their photocytotoxicity are two common strategies to enhance the specificity of anticancer photodynamic therapy. We report herein a novel supramolecular bio-orthogonal approach to integrate these two functions. A β-cyclodextrin-substituted aza-boron-dipyrromethene-based photosensitizer was first complexed with a ferrocene-substituted black-hole quencher to inhibit its photosensitizing ability. Upon encountering the adamantane moieties that had been delivered to target cancer cells through specific binding of the conjugated peptide to the overexpressed epidermal growth factor receptor, the ferrocene-based guest species were displaced due to the stronger binding interactions between β-cyclodextrin and adamantane, thereby restoring the photodynamic activity of the photosensitizer. Hence, this two-step process enabled targeted delivery and site-specific activation of the photosensitizer, as demonstrated through a series of experiments in aqueous media, in a range of cancer cell lines and in tumor-bearing nude mice.
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Affiliation(s)
- Evelyn Y Xue
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Wen-Jing Shi
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Wing-Ping Fong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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15
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Chu JCH, Fong WP, Wong CTT, Ng DKP. Facile Synthesis of Cyclic Peptide-Phthalocyanine Conjugates for Epidermal Growth Factor Receptor-Targeted Photodynamic Therapy. J Med Chem 2021; 64:2064-2076. [PMID: 33577327 DOI: 10.1021/acs.jmedchem.0c01677] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A facile procedure for in situ peptide cyclization and phthalocyanine conjugation was developed by utilizing a bifunctional linker incorporated with a bis(bromomethyl)benzene unit and a cyclopentadiene moiety. These functional groups facilitated the nucleophilic substitution with the two cysteine residues of the linear peptides followed by the Diels-Alder reaction with the maleimide moiety attached to a zinc(II) phthalocyanine. With this approach, three cyclic peptide-phthalocyanine conjugates were prepared in 20-26% isolated yield via a one-pot procedure. One of the conjugates containing a cyclic form of the epidermal growth factor receptor (EGFR)-binding peptide sequence CMYIEALDKYAC displayed superior features as an advanced photosensitizer. It showed preferential uptake by two EGFR-positive cancer cell lines (HT29 and HCT116) compared with two EGFR-negative counterparts (HeLa and HEK293), resulting in significantly higher photocytotoxicity. Intravenous administration of this conjugate into HT29 tumor-bearing nude mice resulted in selective localization in tumor and effective inhibition of tumor growth upon photodynamic treatment.
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Affiliation(s)
- Jacky C H Chu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Wing-Ping Fong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Clarence T T Wong
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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16
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Molecular Targeting of Epidermal Growth Factor Receptor (EGFR) and Vascular Endothelial Growth Factor Receptor (VEGFR). Molecules 2021; 26:molecules26041076. [PMID: 33670650 PMCID: PMC7922143 DOI: 10.3390/molecules26041076] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/13/2021] [Accepted: 02/16/2021] [Indexed: 12/13/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) and vascular endothelial growth factor receptor (VEGFR) are two extensively studied membrane-bound receptor tyrosine kinase proteins that are frequently overexpressed in many cancers. As a result, these receptor families constitute attractive targets for imaging and therapeutic applications in the detection and treatment of cancer. This review explores the dynamic structure and structure-function relationships of these two growth factor receptors and their significance as it relates to theranostics of cancer, followed by some of the common inhibition modalities frequently employed to target EGFR and VEGFR, such as tyrosine kinase inhibitors (TKIs), antibodies, nanobodies, and peptides. A summary of the recent advances in molecular imaging techniques, including positron emission tomography (PET), single-photon emission computerized tomography (SPECT), computed tomography (CT), magnetic resonance imaging (MRI), and optical imaging (OI), and in particular, near-IR fluorescence imaging using tetrapyrrolic-based fluorophores, concludes this review.
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17
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Tewari KM, Dondi R, Yaghini E, Pourzand C, MacRobert AJ, Eggleston IM. Peptide-targeted dendrimeric prodrugs of 5-aminolevulinic acid: A novel approach towards enhanced accumulation of protoporphyrin IX for photodynamic therapy. Bioorg Chem 2021; 109:104667. [PMID: 33611140 DOI: 10.1016/j.bioorg.2021.104667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 01/11/2021] [Accepted: 01/18/2021] [Indexed: 12/21/2022]
Abstract
Photodynamic therapy (PDT) is a promising approach for the targeted treatment of cancer and various other human disorders. An effective, clinically approved approach in PDT involves the administration of 5-aminolevulinic acid (ALA) to generate elevated levels of the natural photosensitiser protoporphyrin IX (PpIX). The development of prodrugs of ALA is of considerable interest as a means to enhance the efficiency and cell selectivity of PpIX accumulation for PDT applications. In this work a novel peptide-targeted dendrimeric prodrug of 5-aminolevulinic acid (ALA) 13 was synthesised which displays nine copies of ALA on a core structure that is linked to a homing peptide for targeted delivery to a specific cancer cell type. The synthesis was accomplished effectively via a flexible, modular solid phase and solution phase route, using a combination of solid phase peptide synthesis and copper-catalysed azide-alkyne cycloaddition chemistry. The prodrug system shows a sustained and enhanced production of protoporphyrin IX (PpIX) in the MDA-MB-231 cell line that over-expresses the epidernal growth factor receptor (EGFR+) in comparison to equimolar ALA and the corresponding non-targeted ALA dendrimer (nine copies of ALA). This study provides a proof of concept for the development of a new generation of prodrugs for ALA-based photodynamic therapy that can deliver an enhanced ALA payload to specific tissue types.
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Affiliation(s)
- K M Tewari
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
| | - R Dondi
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
| | - E Yaghini
- Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PE, UK
| | - C Pourzand
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
| | - A J MacRobert
- Division of Surgery and Interventional Science, University College London, Royal Free Campus, Rowland Hill Street, London NW3 2PE, UK
| | - I M Eggleston
- Department of Pharmacy and Pharmacology, University of Bath, Bath BA2 7AY, UK
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18
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Williams TM, Kaufman NEM, Zhou Z, Singh SS, Jois SD, Vicente MDGH. Click Conjugation of Boron Dipyrromethene (BODIPY) Fluorophores to EGFR-Targeting Linear and Cyclic Peptides. Molecules 2021; 26:molecules26030593. [PMID: 33498632 PMCID: PMC7865655 DOI: 10.3390/molecules26030593] [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: 12/30/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 12/15/2022] Open
Abstract
Through a simple 1,3-cycloaddition reaction, three BODIPY-peptide conjugates that target the extracellular domain of the epidermal growth factor receptor (EGFR) were prepared and their ability for binding to EGFR was investigated. The peptide ligands K(N3)LARLLT and its cyclic analog cyclo(K(N3)larllt, previously shown to have high affinity for binding to the extracellular domain of EGFR, were conjugated to alkynyl-functionalized BODIPY dyes 1 and 2 via a copper-catalyzed click reaction. This reaction produced conjugates 3, 4, and 5 in high yields (70–82%). In vitro studies using human carcinoma HEp2 cells that overexpress EGFR demonstrated high cellular uptake, particularly for the cyclic peptide conjugate 5, and low cytotoxicity in light (~1 J·cm−2) and darkness. Surface plasmon resonance (SPR) results show binding affinity of the three BODIPY-peptide conjugates for EGFR, particularly for 5 bearing the cyclic peptide. Competitive binding studies using three cell lines with different expressions of EGFR show that 5 binds specifically to EGFR-overexpressing colon cancer cells. Among the three conjugates, 5 bearing the cyclic peptide exhibited the highest affinity for binding to the EGFR protein.
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Affiliation(s)
- Tyrslai M. Williams
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA; (T.M.W.); (N.E.M.K.); (Z.Z.)
| | - Nichole E. M. Kaufman
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA; (T.M.W.); (N.E.M.K.); (Z.Z.)
| | - Zehua Zhou
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA; (T.M.W.); (N.E.M.K.); (Z.Z.)
| | - Sitanshu S. Singh
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, USA; (S.S.S.); (S.D.J.)
| | - Seetharama D. Jois
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, USA; (S.S.S.); (S.D.J.)
| | - Maria da Graça H. Vicente
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA; (T.M.W.); (N.E.M.K.); (Z.Z.)
- Correspondence: ; Tel.: +1-225-578-7405; Fax: +1-225-578-3458
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19
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Goddard ZR, Beekman AM, Cominetti MMD, O'Connell MA, Chambrier I, Cook MJ, Marín MJ, Russell DA, Searcey M. Peptide directed phthalocyanine-gold nanoparticles for selective photodynamic therapy of EGFR overexpressing cancers. RSC Med Chem 2020; 12:288-292. [PMID: 34041483 PMCID: PMC8127329 DOI: 10.1039/d0md00284d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 11/16/2020] [Indexed: 12/21/2022] Open
Abstract
Gold nanoparticles, covalently functionalised with the photosensitiser C11Pc and PEG, were actively targeted towards epidermal growth factor receptor overexpressing cancers using the peptide FITC-βAAEYLRK. Selective phototoxicity was observed at nanomolar concentrations with minimal dark toxicity.
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Affiliation(s)
- Zoë Rachael Goddard
- School of Pharmacy, University of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | | | - Marco M D Cominetti
- School of Pharmacy, University of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - Maria A O'Connell
- School of Pharmacy, University of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - Isabelle Chambrier
- School of Chemistry, University of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - Michael J Cook
- School of Chemistry, University of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - María J Marín
- School of Chemistry, University of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - David A Russell
- School of Chemistry, University of East Anglia Norwich Research Park Norwich NR4 7TJ UK
| | - Mark Searcey
- School of Pharmacy, University of East Anglia Norwich Research Park Norwich NR4 7TJ UK
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20
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Pethő L, Kasza G, Lajkó E, Láng O, Kőhidai L, Iván B, Mező G. Amphiphilic drug-peptide-polymer conjugates based on poly(ethylene glycol) and hyperbranched polyglycerol for epidermal growth factor receptor targeting: the effect of conjugate aggregation on in vitro activity. SOFT MATTER 2020; 16:5759-5769. [PMID: 32530018 DOI: 10.1039/d0sm00428f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Numerous peptide-drug conjugates have been developed over the years to enhance the specificity and selectivity of chemotherapeutic agents for tumour cells. In our present work, epidermal growth factor receptor targeting drug-peptide conjugates were prepared using GE11 and D4 peptides. To ensure the drug release, the cathepsin B labile GFLG spacer was incorporated between the targeting peptide and the drug molecule (daunomycin), which significantly increased the hydrophobicity and thereby decreased the water solubility of the conjugates. To overcome the solubility problem, drug-peptide-polymer conjugates with systematic structural variations were prepared, by linking poly(ethylene glycol) (PEG) or a well-defined amino-monofunctional hyperbranched polyglycerol (HbPG) directly or via a pentaglycine spacer to the targeting peptides. All the drug-peptide-polymer conjugates were water-soluble as confirmed by turbidimetric measurements. The results of the in vitro cell viability and cellular uptake measurements on HT-29 human colon adenocarcinoma cells proved that the HbPG and the PEG highly influenced the biological activity. The conjugation of the hydrophilic polymer resulted in the amphiphilic character of the conjugates, which led to self-aggregation and nanoparticle formation that decreased the cellular uptake above a specific aggregation concentration. On the other hand, the hydrodynamic volume and the different polymer chain topology of the linear PEG and the compact hyperbranched HbPG also played an important role in the biological activity. Therefore, in similar systems, the investigation of the colloidal properties is inevitable for the better understanding of the biological activity, which can reveal the structure-activity relationship of amphiphilic drug-peptide-polymer conjugates for efficient tumour targeting.
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Affiliation(s)
- Lilla Pethő
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, H-1117 Budapest, Pázmány Péter sétány 1/A, Hungary.
| | - György Kasza
- Polymer Chemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, H-1117 Budapest, Magyar tudósok körútja 2, Hungary.
| | - Eszter Lajkó
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, H-1089 Budapest, Nagyvárad tér 4, Hungary
| | - Orsolya Láng
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, H-1089 Budapest, Nagyvárad tér 4, Hungary
| | - László Kőhidai
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, H-1089 Budapest, Nagyvárad tér 4, Hungary
| | - Béla Iván
- Polymer Chemistry Research Group, Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, H-1117 Budapest, Magyar tudósok körútja 2, Hungary.
| | - Gábor Mező
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, H-1117 Budapest, Pázmány Péter sétány 1/A, Hungary. and Eötvös Loránd University, Faculty of Science, Institute of Chemistry, H-1117 Budapest, Pázmány Péter sétány 1/A, Hungary
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21
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Williams TM, Zhou Z, Singh SS, Sibrian-Vazquez M, Jois SD, Henriques Vicente MDG. Targeting EGFR Overexpression at the Surface of Colorectal Cancer Cells by Exploiting Amidated BODIPY-Peptide Conjugates. Photochem Photobiol 2020; 96:581-595. [PMID: 32086809 DOI: 10.1111/php.13234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 12/22/2019] [Indexed: 12/12/2022]
Abstract
Three BODIPY-peptide conjugates designed to target the epidermal growth factor receptor (EGFR) at the extracellular domain were synthesized, and their specificity for binding to EGFR was investigated. Peptide sequences containing seven amino acids, GLARLLT (2) and KLARLLT (4), and 13 amino acids, GYHWYGYTPQNVI (3), were conjugated to carboxyl BODIPY dye (1) by amide bond formation in up to 73% yields. The BODIPY-peptide conjugates and their "parent" peptides were determined to bind to EGFR experimentally using SPR analysis and were further investigated using computational methods (AutoDock). Results of SPR, competitive binding and docking studies propose that conjugate 6 including the GYHWYGYTPQNVI sequence binds to EGFR more effectively than conjugates 5 and 7, bearing the smaller peptide sequences. Findings in human carcinoma HEp2 cells overexpressing EGFR showed nontoxic behavior in the presence of activated light (1.5 J cm-2 ) and in the absence of light for all BODIPYs. Furthermore, conjugate 6 showed about five-fold higher accumulation within HEp2 cells compared with conjugates 5 and 7, localizing preferentially in the cell ER and lysosomes. Our findings suggest that BODIPY-peptide conjugate 6 is a promising contrast agent for detection of colorectal cancer and potentially other EGFR-overexpressing cancers.
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Affiliation(s)
| | - Zehua Zhou
- Department of Chemistry, Louisiana State University, Baton Rouge, LA
| | - Sitanshu S Singh
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA
| | | | - Seetharama D Jois
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, Monroe, LA
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Paiva I, Mattingly S, Wuest M, Leier S, Vakili MR, Weinfeld M, Lavasanifar A, Wuest F. Synthesis and Analysis of 64Cu-Labeled GE11-Modified Polymeric Micellar Nanoparticles for EGFR-Targeted Molecular Imaging in a Colorectal Cancer Model. Mol Pharm 2020; 17:1470-1481. [DOI: 10.1021/acs.molpharmaceut.9b01043] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Igor Paiva
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Canada
| | - Stephanie Mattingly
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Melinda Wuest
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, Canada
| | - Samantha Leier
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Mohammad Reza Vakili
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Canada
| | - Michael Weinfeld
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Afsaneh Lavasanifar
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Canada
- Department of Chemical and Materials Engineering, Faculty of Engineering, University of Alberta, Edmonton, Canada
| | - Frank Wuest
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Canada
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
- Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, Canada
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23
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Anil SM, Rajeev N, Kiran KR, Swaroop TR, Mallesha N, Shobith R, Sadashiva MP. Multi-pharmacophore Approach to Bio-therapeutics: Piperazine Bridged Pseudo-peptidic Urea/Thiourea Derivatives as Anti-oxidant Agents. Int J Pept Res Ther 2020. [DOI: 10.1007/s10989-019-09824-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Saw PE, Song EW. Phage display screening of therapeutic peptide for cancer targeting and therapy. Protein Cell 2019; 10:787-807. [PMID: 31140150 PMCID: PMC6834755 DOI: 10.1007/s13238-019-0639-7] [Citation(s) in RCA: 129] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/21/2019] [Indexed: 12/14/2022] Open
Abstract
Recently, phage display technology has been announced as the recipient of Nobel Prize in Chemistry 2018. Phage display technique allows high affinity target-binding peptides to be selected from a complex mixture pool of billions of displayed peptides on phage in a combinatorial library and could be further enriched through the biopanning process; proving to be a powerful technique in the screening of peptide with high affinity and selectivity. In this review, we will first discuss the modifications in phage display techniques used to isolate various cancer-specific ligands by in situ, in vitro, in vivo, and ex vivo screening methods. We will then discuss prominent examples of solid tumor targeting-peptides; namely peptide targeting tumor vasculature, tumor microenvironment (TME) and over-expressed receptors on cancer cells identified through phage display screening. We will also discuss the current challenges and future outlook for targeting peptide-based therapeutics in the clinics.
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Affiliation(s)
- Phei Er Saw
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China
| | - Er-Wei Song
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China.
- Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510120, China.
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25
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Aggarwal A, Samaroo D, Jovanovic IR, Singh S, Tuz MP, Mackiewicz MR. Porphyrinoid-based photosensitizers for diagnostic and therapeutic applications: An update. J PORPHYR PHTHALOCYA 2019. [DOI: 10.1142/s1088424619300118] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Porphyrin-based molecules are actively studied as dual function theranostics: fluorescence-based imaging for diagnostics and fluorescence-guided therapeutic treatment of cancers. The intrinsic fluorescent and photodynamic properties of the bimodal molecules allows for these theranostic approaches. Several porphyrinoids bearing both hydrophilic and/or hydrophobic units at their periphery have been developed for the aforementioned applications, but better tumor selectivity and high efficacy to destroy tumor cells is always a key setback for their use. Another issue related to their effective clinical use is that, most of these chromophores form aggregates under physiological conditions. Nanomaterials that are known to possess incredible properties that cannot be achieved from their bulk systems can serve as carriers for these chromophores. Porphyrinoids, when conjugated with nanomaterials, can be enabled to perform as multifunctional nanomedicine devices. The integrated properties of these porphyrinoid-nanomaterial conjugated systems make them useful for selective drug delivery, theranostic capabilities, and multimodal bioimaging. This review highlights the use of porphyrins, chlorins, bacteriochlorins, phthalocyanines and naphthalocyanines as well as their multifunctional nanodevices in various biomedical theranostic platforms.
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Affiliation(s)
- Amit Aggarwal
- LaGuardia Community College, 31-10 Thomson Ave., Long Island City, NY 11101, USA
| | - Diana Samaroo
- New York City College of Technology, Department of Chemistry, 285 Jay Street, Brooklyn, NY 11201, USA
- Graduate Center, 365 5th Ave, New York, NY 10016, USA
| | | | - Sunaina Singh
- LaGuardia Community College, 31-10 Thomson Ave., Long Island City, NY 11101, USA
| | - Michelle Paola Tuz
- LaGuardia Community College, 31-10 Thomson Ave., Long Island City, NY 11101, USA
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26
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Zinc(II) phthalocyanines as photosensitizers for antitumor photodynamic therapy. Int J Biochem Cell Biol 2019; 114:105575. [PMID: 31362060 DOI: 10.1016/j.biocel.2019.105575] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/18/2019] [Accepted: 07/22/2019] [Indexed: 12/31/2022]
Abstract
Photodynamic therapy (PDT) is a highly specific and clinically approved method for cancer treatment in which a nontoxic drug known as photosensitizer (PS) is administered to a patient. After selective tumor irradiation, an almost complete eradication of the tumor can be reached as a consequence of reactive oxygen species (ROS) generation, which not only damage tumor cells, but also lead to tumor-associated vasculature occlusion and the induction of an immune response. Despite exhaustive investigation and encouraging results, zinc(II) phthalocyanines (ZnPcs) have not been approved as PSs for clinical use yet. This review presents an overview on the physicochemical properties of ZnPcs and biological results obtained both in vitro and in more complex models, such as 3D cell cultures, chicken chorioallantoic membranes and tumor-bearing mice. Cell death pathways induced after PDT treatment with ZnPcs are discussed in each case. Finally, combined therapeutic strategies including ZnPcs and the currently available clinical trials are mentioned.
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27
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Xue EY, Wong RCH, Wong CTT, Fong WP, Ng DKP. Synthesis and biological evaluation of an epidermal growth factor receptor-targeted peptide-conjugated phthalocyanine-based photosensitiser. RSC Adv 2019; 9:20652-20662. [PMID: 35515550 PMCID: PMC9065697 DOI: 10.1039/c9ra03911b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 06/21/2019] [Indexed: 12/15/2022] Open
Abstract
A peptide-conjugated zinc(ii) phthalocyanine containing the epidermal growth factor receptor-targeted heptapeptide QRHKPRE has been prepared. The conjugate labelled as ZnPc-QRH* can selectively bind to the cell membrane of HT29 human colorectal adenocarcinoma cells in 10 min followed by internalisation upon prolonged incubation via receptor-mediated endocytosis, leading to localisation in lysosomes eventually. By manipulating the incubation time, the subcellular localisation of the conjugate can be varied and the cell-death pathways induced upon irradiation can also be altered. It has been found that photosensitisation initiated at the cell membrane and in the lysosomes would trigger cell death mainly through necrosis and apoptosis respectively. Intravenous administration of the conjugate into HT29 tumour-bearing nude mice resulted in higher accumulation in the tumour than in most major organs. The selective binding of this conjugate to tumour has also been demonstrated by comparing the results with those of the analogue with a scrambled peptide sequence (EPRQRHK). The overall results indicate that ZnPc-QRH* is a promising EGFR-targeted photosensitiser for photodynamic therapy.
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Affiliation(s)
- Evelyn Y Xue
- Department of Chemistry, The Chinese University of Hong Kong Shatin, N.T. Hong Kong China
| | - Roy C H Wong
- Department of Chemistry, The Chinese University of Hong Kong Shatin, N.T. Hong Kong China
| | - Clarence T T Wong
- Department of Chemistry, The Chinese University of Hong Kong Shatin, N.T. Hong Kong China
| | - Wing-Ping Fong
- School of Life Sciences, The Chinese University of Hong Kong Shatin, N.T. Hong Kong China
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong Shatin, N.T. Hong Kong China
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28
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Kaufman NEM, Meng Q, Griffin KE, Singh SS, Dahal A, Zhou Z, Fronczek FR, Mathis JM, Jois SD, Vicente MGH. Synthesis, Characterization, and Evaluation of Near-IR Boron Dipyrromethene Bioconjugates for Labeling of Adenocarcinomas by Selectively Targeting the Epidermal Growth Factor Receptor. J Med Chem 2019; 62:3323-3335. [PMID: 30835998 DOI: 10.1021/acs.jmedchem.8b01746] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of five boron dipyrromethene (BODIPY) bioconjugates containing an epidermal growth factor receptor (EGFR)-targeted pegylated LARLLT peptide and/or a glucose or biotin ethylene diamine group were synthesized, and the binding capability of the new conjugates to the extracellular domain of EGFR was investigated using molecular modeling, surface plasmon resonance, fluorescence microscopy, competitive binding assays, and animal studies. The BODIPY conjugates with a LARLLT peptide were found to bind specifically to EGFR, whereas those lacking the peptide bound weakly and nonspecifically. All BODIPY conjugates showed low cytotoxicity (IC50 > 94 μM) in HT-29 cells, both in the dark and upon light activation (1.5 J/cm2). Studies of nude mice bearing subcutaneous human HT-29 xenografts revealed that only BODIPY conjugates bearing the LARLLT peptide showed tumor localization 24 h after intravenous administration. The results of our studies demonstrate that BODIPY bioconjugates bearing the EGFR-targeting peptide 3PEG-LARLLT show promise as near-IR fluorescent imaging agents for colon cancers overexpressing EGFR.
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Affiliation(s)
- Nichole E M Kaufman
- Department of Chemistry , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - Qianli Meng
- Department of Chemistry , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - Kaitlin E Griffin
- Department of Chemistry , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - Sitanshu S Singh
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy , University of Louisiana at Monroe , Monroe , Louisiana 71201 , United States
| | - Achyut Dahal
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy , University of Louisiana at Monroe , Monroe , Louisiana 71201 , United States
| | - Zehua Zhou
- Department of Chemistry , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - Frank R Fronczek
- Department of Chemistry , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - J Michael Mathis
- Department of Comparative Biomedical Sciences , Louisiana State University School of Veterinary Medicine , Baton Rouge , Louisiana 70803 , United States
| | - Seetharama D Jois
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy , University of Louisiana at Monroe , Monroe , Louisiana 71201 , United States
| | - M Graça H Vicente
- Department of Chemistry , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
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29
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Zhao J, Li S, Jin Y, Wang JY, Li W, Wu W, Hong Z. Multimerization Increases Tumor Enrichment of Peptide⁻Photosensitizer Conjugates. Molecules 2019; 24:molecules24040817. [PMID: 30823562 PMCID: PMC6413024 DOI: 10.3390/molecules24040817] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/08/2019] [Accepted: 02/19/2019] [Indexed: 01/04/2023] Open
Abstract
Photodynamic therapy (PDT) is an established therapeutic modality for the management of cancers. Conjugation with tumor-specific small molecule ligands (e.g., short peptides or peptidomimetics) could increase the tumor targeting of PDT agents, which is very important for improving the outcome of PDT. However, compared with antibody molecules, small molecule ligands have a much weaker affinity to their receptors, which means that their tumor enrichment is not always ideal. In this work, we synthesized multimeric RGD ligand-coupled conjugates of pyropheophorbide-a (Pyro) to increase the affinity through multivalent and cluster effects to improve the tumor enrichment of the conjugates. Thus, the dimeric and trimeric RGD peptide-coupled Pyro conjugates and the monomeric one for comparison were efficiently synthesized via a convergent strategy. A short polyethylene glycol spacer was introduced between two RGD motifs to increase the distance required for multivalence. A subsequent binding affinity assay verified the improvement of the binding towards integrin αvβ3 receptors after the increase in the valence, with an approximately 20-fold improvement in the binding affinity of the trimeric conjugate compared with that of the monomeric conjugate. In vivo experiments performed in tumor-bearing mice also confirmed a significant increase in the distribution of the conjugates in the tumor site via multimerization, in which the trimeric conjugate had the best tumor enrichment compared with the other two conjugates. These results indicated that the multivalence interaction can obviously increase the tumor enrichment of RGD peptide-conjugated Pyro photosensitizers, and the prepared trimeric conjugate can be used as a novel antitumor photodynamic agent with high tumor enrichment.
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Affiliation(s)
- Jisi Zhao
- College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Shuang Li
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Yingying Jin
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Jessica Yijia Wang
- Tianjin Sirui International School, Sisui Road, Hexi District, Tianjin 300222, China.
| | - Wenjing Li
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Wenjie Wu
- College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Zhangyong Hong
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China.
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30
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Liu Q, Wang J, Li S, Li G, Chen Q, Hong Z. Folate-Targeted Polyethylene Glycol-Modified Photosensitizers for Photodynamic Therapy. J Pharm Sci 2019; 108:2102-2111. [PMID: 30677421 DOI: 10.1016/j.xphs.2019.01.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/30/2018] [Accepted: 01/11/2019] [Indexed: 01/02/2023]
Abstract
Pyropheophorbide a (Pyro) is a promising photosensitizer; however, it has no tumor selectivity and enrichment capability. In our former work, the prepared folic acid (FA)-Pyro conjugates showed considerably improved tumor accumulation and photodynamic therapy (PDT) activity in cell- and animal-based studies. However, the targeting capability, selectivity and water solubility of the conjugate remain problematic. Here, we evaluated the installation of hydrophilic polyethylene glycol chains as the linker between Pyro and FA, by avoiding direct conjugation of Pyro with FA, aiming to improve tumor selectivity and accumulation. However, PEGylation may have negative effects on the PDT activity and cutaneous phototoxicity. Therefore, we chose various lengths of PEGs as linkers to optimize the molecular weight, hydrophilicity, and PDT activity and, thus, to balance the tumor selectivity and biological function of the conjugate. One optimized conjugate, Pyro-PEG1K-FA, exhibited excellent tumor enrichment and was able to eradicate subcutaneous tumors at a considerably reduced dose. We report the synthesis and characterization of these conjugates as well as the evaluation of their tumor accumulation ability and the corresponding PDT efficiency through in vitro and in vivo experiments.
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Affiliation(s)
- Qian Liu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P.R.China
| | - Jin Wang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P.R.China
| | - Shuang Li
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P.R.China
| | - Guojie Li
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P.R.China
| | - Qingle Chen
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P.R.China
| | - Zhangyong Hong
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P.R.China.
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31
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Jenni S, Sour A, Bolze F, Ventura B, Heitz V. Tumour-targeting photosensitisers for one- and two-photon activated photodynamic therapy. Org Biomol Chem 2019; 17:6585-6594. [DOI: 10.1039/c9ob00731h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Efficient receptor-mediated delivery of a folate-targeted photosensitiser to kill cancer cells following two-photon excitation in the near-infrared is demonstrated.
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Affiliation(s)
- Sébastien Jenni
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels
- Institut de Chimie de Strasbourg UMR 7177/CNRS
- Université de Strasbourg
- 67000 Strasbourg
- France
| | - Angélique Sour
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels
- Institut de Chimie de Strasbourg UMR 7177/CNRS
- Université de Strasbourg
- 67000 Strasbourg
- France
| | - Frédéric Bolze
- CAMB
- UMR 7199
- UdS/CNRS
- Faculté de Pharmacie
- Université de Strasbourg
| | | | - Valérie Heitz
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels
- Institut de Chimie de Strasbourg UMR 7177/CNRS
- Université de Strasbourg
- 67000 Strasbourg
- France
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32
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Brilkina AA, Dubasova LV, Sergeeva EA, Pospelov AJ, Shilyagina NY, Shakhova NM, Balalaeva IV. Photobiological properties of phthalocyanine photosensitizers Photosens, Holosens and Phthalosens: A comparative in vitro analysis. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2018; 191:128-134. [PMID: 30616037 DOI: 10.1016/j.jphotobiol.2018.12.020] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/19/2018] [Accepted: 12/26/2018] [Indexed: 11/19/2022]
Abstract
Photobiological properties of phthalocyanine photosensitizers, namely, clinically approved Photosens and new compounds Holosens and Phthalosens were analyzed on transitional cell carcinoma of the urinary bladder (T24) and human hepatic adenocarcinoma (SK-HEP-1). Photosens is a sulfated aluminum phthalocyanine with the number of sulfo groups 3.4, which is characterized by a high degree of hydrophilicity, slow cellular uptake, localization in lysosomes and the lowest photodynamic activity. Holosens is an octacholine zinc phthalocyanine, a cationic compound with significant charge. Holosens more efficiently enters the cells; it is localized in Golgi apparatus in addition to lysosomes and exhibits a significant inhibitory effect on cell viability upon irradiation. The highest photodynamic activity was demostrated by Phthalosens. Phthalosens is a metal-free analog of Photosens with a number of sulfo groups 2.5, which determines its amphiphilicity. Phthalosens is characterized by the highest rate of cellular uptake through the outer cell membrane, localization in cell membrane as well as in lysosomes and Golgi apparatus, and the highest activity upon irradiation among the photosensitizers studied. In general, changes in the physicochemical properties of Holosens and Phthalosens ensured an increase in their efficiency in vitro compared to Photosens. The features of accumulation, intracellular distribution and their interrelation with photodynamic activity, revealed in this work, indicate the prospects of Phthalosens and Holosens for clinical practice.
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Affiliation(s)
- Anna A Brilkina
- Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia
| | - Lubov V Dubasova
- Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia
| | - Ekaterina A Sergeeva
- Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanova st, Nizhny Novgorod 603950, Russia
| | - Anton J Pospelov
- Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia
| | - Natalia Y Shilyagina
- Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia
| | - Natalia M Shakhova
- Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanova st, Nizhny Novgorod 603950, Russia
| | - Irina V Balalaeva
- Lobachevsky State University of Nizhny Novgorod, 23 Gagarin ave., Nizhny Novgorod 603950, Russia; I.M. Sechenov First Moscow State Medical University, 8-2 Trubetskaya str., Moscow 119991, Russia.
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33
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Ferreira da Costa J, Silva D, Caamaño O, Brea JM, Loza MI, Munteanu CR, Pazos A, García-Mera X, González-Díaz H. Perturbation Theory/Machine Learning Model of ChEMBL Data for Dopamine Targets: Docking, Synthesis, and Assay of New l-Prolyl-l-leucyl-glycinamide Peptidomimetics. ACS Chem Neurosci 2018; 9:2572-2587. [PMID: 29791132 DOI: 10.1021/acschemneuro.8b00083] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Predicting drug-protein interactions (DPIs) for target proteins involved in dopamine pathways is a very important goal in medicinal chemistry. We can tackle this problem using Molecular Docking or Machine Learning (ML) models for one specific protein. Unfortunately, these models fail to account for large and complex big data sets of preclinical assays reported in public databases. This includes multiple conditions of assays, such as different experimental parameters, biological assays, target proteins, cell lines, organism of the target, or organism of assay. On the other hand, perturbation theory (PT) models allow us to predict the properties of a query compound or molecular system in experimental assays with multiple boundary conditions based on a previously known case of reference. In this work, we report the first PTML (PT + ML) study of a large ChEMBL data set of preclinical assays of compounds targeting dopamine pathway proteins. The best PTML model found predicts 50000 cases with accuracy of 70-91% in training and external validation series. We also compared the linear PTML model with alternative PTML models trained with multiple nonlinear methods (artificial neural network (ANN), Random Forest, Deep Learning, etc.). Some of the nonlinear methods outperform the linear model but at the cost of a notable increment of the complexity of the model. We illustrated the practical use of the new model with a proof-of-concept theoretical-experimental study. We reported for the first time the organic synthesis, chemical characterization, and pharmacological assay of a new series of l-prolyl-l-leucyl-glycinamide (PLG) peptidomimetic compounds. In addition, we performed a molecular docking study for some of these compounds with the software Vina AutoDock. The work ends with a PTML model predictive study of the outcomes of the new compounds in a large number of assays. Therefore, this study offers a new computational methodology for predicting the outcome for any compound in new assays. This PTML method focuses on the prediction with a simple linear model of multiple pharmacological parameters (IC50, EC50, Ki, etc.) for compounds in assays involving different cell lines used, organisms of the protein target, or organism of assay for proteins in the dopamine pathway.
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Affiliation(s)
- Joana Ferreira da Costa
- Department of Organic Chemistry, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - David Silva
- Department of Organic Chemistry, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Olga Caamaño
- Department of Organic Chemistry, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - José M. Brea
- CIMUS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Maria Isabel Loza
- CIMUS, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Cristian R. Munteanu
- Instituto de Investigacion Biomedica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), A Coruña, 15006, Spain
| | - Alejandro Pazos
- Instituto de Investigacion Biomedica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), A Coruña, 15006, Spain
- Computer Science Department, Faculty of Computer Science, University of A Coruna, 15071 A Coruña, Spain
| | - Xerardo García-Mera
- Department of Organic Chemistry, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Humbert González-Díaz
- Department of Organic Chemistry II, University of Basque Country UPV/EHU, 48940 Leioa, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
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A New Tool in the Quest for Biocompatible Phthalocyanines: Palladium Catalyzed Aminocarbonylation for Amide Substituted Phthalonitriles and Illustrative Phthalocyanines Thereof. Catalysts 2018. [DOI: 10.3390/catal8100480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The amide peptide bond type linkage is one of the most natural conjugations available, present in many biological synthons and pharmaceutical drugs. Hence, aiming the direct conjugation of potentially biologically active compounds to phthalocyanines, herein we disclose a new strategy for direct modulation of phthalonitriles, inspired by an attractive synthetic strategy for the preparation of carboxamides based on palladium-catalyzed aminocarbonylation of aryl halides in the presence of carbon monoxide (CO) which, to our knowledge, has never been used to prepare amide-substituted phthalonitriles, the natural precursors for the synthesis of phthalocyanines. Some examples of phthalocyanines prepared thereof are also reported, along with their full spectroscopic characterization and photophysical properties initial assessment.
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35
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Exploring pitfalls of 64Cu-labeled EGFR-targeting peptide GE11 as a potential PET tracer. Amino Acids 2018; 50:1415-1431. [PMID: 30039310 DOI: 10.1007/s00726-018-2616-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 07/09/2018] [Indexed: 12/29/2022]
Abstract
The epidermal growth factor receptor (EGFR) represents an important molecular target for both radiotracer-based diagnostic imaging and radionuclide therapy of various cancer entities. For the delivery of radionuclides to the tumor, peptides hold great potential as a transport vehicle. With respect to EGFR, the peptide YHWYGYTPQNVI (GE11) has been reported to bind the receptor with high specificity and affinity. In the present study, GE11 with β-alanine (β-Ala-GE11) was conjugated to the chelating agent p-SCN-Bn-NOTA and radiolabeled with 64Cu for the first radio pharmacological evaluation as a potential probe for positron emission tomography (PET)-based cancer imaging. For better water solubility, an ethylene glycol-based linker was introduced between the peptide's N terminus and the radionuclide chelator. The stability of the 64Cu-labeled peptide conjugate and its binding to EGFR-expressing tumor cells was investigated in vitro and in vivo, and then compared with the 64Cu-labeled EGFR-targeting antibody conjugate NOTA-cetuximab. The GE11 peptide conjugate [64Cu]Cu-NOTA-linker-β-Ala-GE11 ([64Cu]Cu-1) was stable in a buffer solution for at least 24 h but only 50% of the original compound was detected after 24 h of incubation in human serum. Stability could be improved by amidation of the peptide's C terminus (β-Ala-GE11-NH2 (2)). Binding assays with both conjugates, [64Cu]Cu-1 and [64Cu]Cu-2, using the EGFR-expressing tumor cell lines A431 and FaDu showed no specific binding. A pilot small animal PET investigation in FaDu tumor-bearing mice revealed only low tumor uptake (standard uptake value (SUV) < 0.2) for both conjugates. The best tumor-to-muscle ratio determined was 3.75 for [64Cu]Cu-1, at 1 h post injection. In conclusion, the GE11 conjugates in its present form are not suitable for further biological investigations, since they presumably form aggregates.
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36
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Chen Q, Ma Y, Zhao J, Zhao M, Li W, Liu Q, Xiong L, Wu W, Hong Z. In vitro and in vivo evaluation of improved EGFR targeting peptide-conjugated phthalocyanine photosensitizers for tumor photodynamic therapy. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2018.04.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Affiliation(s)
| | - Marina Gobbo
- Department of Chemical SciencesUniversity of PadovaPadova35131 Italy
- Institute of Biomolecular Chemistry of CNR, Padova UnitPadova35131 Italy
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38
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Chow SYS, Wong RCH, Zhao S, Lo PC, Ng DKP. Disulfide-Linked Dendritic Oligomeric Phthalocyanines as Glutathione-Responsive Photosensitizers for Photodynamic Therapy. Chemistry 2018; 24:5779-5789. [DOI: 10.1002/chem.201706128] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Indexed: 02/04/2023]
Affiliation(s)
- Sun Y. S. Chow
- Department of Chemistry; The Chinese University of Hong Kong; Shatin N.T. Hong Kong China
| | - Roy C. H. Wong
- Department of Chemistry; The Chinese University of Hong Kong; Shatin N.T. Hong Kong China
| | - Shirui Zhao
- Department of Chemistry; The Chinese University of Hong Kong; Shatin N.T. Hong Kong China
| | - Pui-Chi Lo
- Department of Biomedical Sciences; City University of Hong Kong; Tat Chee Avenue Kowloon Hong Kong China
| | - Dennis K. P. Ng
- Department of Chemistry; The Chinese University of Hong Kong; Shatin N.T. Hong Kong China
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39
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Williams TM, Sable R, Singh S, Vicente MGH, Jois S. Peptide ligands for targeting the extracellular domain of EGFR: Comparison between linear and cyclic peptides. Chem Biol Drug Des 2018; 91:605-619. [PMID: 29052959 PMCID: PMC5775921 DOI: 10.1111/cbdd.13125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/27/2017] [Accepted: 10/04/2017] [Indexed: 01/08/2023]
Abstract
Colorectal cancer (CRC) is the third most common solid internal malignancy among cancers. Early detection of cancer is key to increasing the survival rate of colorectal cancer patients. Overexpression of the EGFR protein is associated with CRC. We have designed a series of peptides that are highly specific for the extracellular domain of EGFR, based on our earlier studies on linear peptides. The previously reported linear peptide LARLLT, known to bind to EGFR, was modified with the goals of increasing its stability and its specificity toward EGFR. Peptide modifications, including D-amino acid substitution, cyclization, and chain reversal, were investigated. In addition, to facilitate labeling of the peptide with a fluorescent dye, an additional lysine residue was introduced onto the linear (KLARLLT) and cyclic peptides cyclo(KLARLLT) (Cyclo.L1). The lysine residue was also converted into an azide group in both a linear and reversed cyclic peptide sequences cyclo(K(N3)larllt) (Cyclo.L1.1) to allow for subsequent "click" conjugation. The cyclic peptides showed enhanced binding to EGFR by SPR. NMR and molecular modeling studies suggest that the peptides acquire a β-turn structure in solution. In vitro stability studies in human serum show that the cyclic peptide is more stable than the linear peptide.
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Affiliation(s)
- Tyrslai M. Williams
- Department of Chemistry, Louisiana State University, Baton Rouge LA 70803, USA
| | - Rushikesh Sable
- Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe LA 71201, USA
| | - Sitanshu Singh
- Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe LA 71201, USA
| | - M. Graça H. Vicente
- Department of Chemistry, Louisiana State University, Baton Rouge LA 70803, USA
| | - Seetharama Jois
- Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe LA 71201, USA
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40
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Almeida-Marrero V, van de Winckel E, Anaya-Plaza E, Torres T, de la Escosura A. Porphyrinoid biohybrid materials as an emerging toolbox for biomedical light management. Chem Soc Rev 2018; 47:7369-7400. [DOI: 10.1039/c7cs00554g] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The present article reviews the most important developing strategies in light-induced nanomedicine, based on the combination of porphyrinoid photosensitizers with a wide variety of biomolecules and biomolecular assemblies.
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Affiliation(s)
| | | | - Eduardo Anaya-Plaza
- Departamento de Química Orgánica
- Universidad Autónoma de Madrid
- Cantoblanco 28049
- Spain
| | - Tomás Torres
- Departamento de Química Orgánica
- Universidad Autónoma de Madrid
- Cantoblanco 28049
- Spain
- Institute for Advanced Research in Chemistry (IAdChem)
| | - Andrés de la Escosura
- Departamento de Química Orgánica
- Universidad Autónoma de Madrid
- Cantoblanco 28049
- Spain
- Institute for Advanced Research in Chemistry (IAdChem)
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41
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Liu Q, Pang M, Tan S, Wang J, Chen Q, Wang K, Wu W, Hong Z. Potent peptide-conjugated silicon phthalocyanines for tumor photodynamic therapy. J Cancer 2018; 9:310-320. [PMID: 29344278 PMCID: PMC5771339 DOI: 10.7150/jca.22362] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 10/15/2017] [Indexed: 02/02/2023] Open
Abstract
Phthalocyanines (Pcs) are a group of promising photosensitizers for use in photodynamic therapy (PDT). However, their extremely low solubility and their strong tendency to aggregate in aqueous solution greatly restrict their application. Conjugation of Pc macrocycles with peptide ligands could be a very useful strategy to optimize the physical properties of Pcs not only by increasing their water solubility and reducing their aggregation but also by endowing the conjugates with a tumor-targeting capability. To develop highly potent photosensitizers for tumor PDT, we prepared new peptide-conjugated photosensitizers using silicon Pc (SiPc), which has much higher photodynamic activity than zinc Pcs, as the light activation moiety and the cRGDfK peptide (or simply cRGD) as the peptide moiety. A polyethylene glycol linker and an extra carboxylic acid group were also tested for introduction into the conjugates to optimize the conjugate structure. The conjugates' photophysical and photodynamic behaviors were then carefully evaluated and compared using in vitro and in vivo experiments. One of the prepared conjugates, RGD-(Linker)2-Glu-SiPc, showed excellent physical properties and photodynamic activity, with an EC50 (half maximal effective concentration) of 10-20 nM toward various cancer cells. This conjugate eradicated human glioblastoma U87-MG tumors in a xenograft murine tumor model after only one dose of photodynamic treatment, with no tumor regrowth during observation for up to 35 days. The conjugate RGD-(Linker)2-Glu-SiPc thus showed highly promising potential for use in tumor treatment.
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Affiliation(s)
- Qian Liu
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
| | - Mingpei Pang
- College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Sihai Tan
- Tianjin University of Traditional Chinese Medicine, Tianjin 300193, P. R. China
| | - Jin Wang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
| | - Qingle Chen
- College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Kai Wang
- International Medicine Center, Tianjin Hospital, Tianjin 300457, P. R. China
| | - Wenjie Wu
- College of Material Science and Chemical Engineering, Tianjin University of Science and Technology, Tianjin 300457, P. R. China
| | - Zhangyong Hong
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Protein Sciences, College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
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42
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Genta I, Chiesa E, Colzani B, Modena T, Conti B, Dorati R. GE11 Peptide as an Active Targeting Agent in Antitumor Therapy: A Minireview. Pharmaceutics 2017; 10:E2. [PMID: 29271876 PMCID: PMC5874815 DOI: 10.3390/pharmaceutics10010002] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 12/06/2017] [Accepted: 12/11/2017] [Indexed: 01/06/2023] Open
Abstract
A lot of solid tumors are characterized by uncontrolled signal transduction triggered by receptors related to cellular growth. The targeting of these cell receptors with antitumor drugs is essential to improve chemotherapy efficacy. This can be achieved by conjugation of an active targeting agent to the polymer portion of a colloidal drug delivery system loaded with an antitumor drug. The goal of this minireview is to report and discuss some recent results in epidermal growth factor receptor targeting by the GE11 peptide combined with colloidal drug delivery systems as smart carriers for antitumor drugs. The minireview chapters will focus on explaining and discussing: (i) Epidermal growth factor receptor (EGFR) structures and functions; (ii) GE11 structure and biologic activity; (iii) examples of GE11 conjugation and GE11-conjugated drug delivery systems. The rationale is to contribute in gathering information on the topic of active targeting to tumors. A case study is introduced, involving research on tumor cell targeting by the GE11 peptide combined with polymer nanoparticles.
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Affiliation(s)
- Ida Genta
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Enrica Chiesa
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Barbara Colzani
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Tiziana Modena
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Bice Conti
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Rossella Dorati
- Department of Drug Sciences, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
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43
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Obata M, Tanaka S, Mizukoshi H, Ishihara E, Takahashi M, Hirohara S. RAFT synthesis of polystyrene-block-poly(polyethylene glycol monomethyl ether acrylate) for zinc phthalocyanine-loaded polymeric micelles as photodynamic therapy photosensitizers. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28929] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Makoto Obata
- Interdisciplinary Graduate School of Medicine and Engineering; University of Yamanashi, 4-4-37 Takeda; Kofu 400-8510 Japan
| | - Shuto Tanaka
- Interdisciplinary Graduate School of Medicine and Engineering; University of Yamanashi, 4-4-37 Takeda; Kofu 400-8510 Japan
| | - Hiroshi Mizukoshi
- Interdisciplinary Graduate School of Medicine and Engineering; University of Yamanashi, 4-4-37 Takeda; Kofu 400-8510 Japan
| | - Eika Ishihara
- Interdisciplinary Graduate School of Medicine and Engineering; University of Yamanashi, 4-4-37 Takeda; Kofu 400-8510 Japan
| | - Masaki Takahashi
- Interdisciplinary Graduate School of Medicine and Engineering; University of Yamanashi, 4-4-37 Takeda; Kofu 400-8510 Japan
| | - Shiho Hirohara
- Department of Chemical and Biological Engineering; National Institute of Technology, Ube College, 2-14-1 Tokiwadai; Ube 755-8555 Japan
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44
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Gülmez AD, Göksel M, Durmuş M. Silicon(IV) phthalocyanine-biotin conjugates: Synthesis, photophysicochemical properties and in vitro biological activity for photodynamic therapy. J PORPHYR PHTHALOCYA 2017. [DOI: 10.1142/s1088424617500481] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Silicon (IV) phthalocyanines bearing one or two biotin groups on the axially positions were synthesized, and these novel phthalocyanines were characterized by elemental analysis and standard spectroscopic techniques such as FT-IR, [Formula: see text]H NMR, UV-vis and MALDI-TOF. The synthesized compounds are the first examples of axially biotin substituted silicon (IV) phthalocyanines. These phthalocyanines were designed as targeting photosensitizers for the treatment of cancer by photodynamic therapy (PDT) technique. The phthalocyanine ring was selected for its photosensitizer ability and the biotin group was selected as a targeting agent for increasing accumulation of these photosensitizers in tumor cells. The photophysical (fluorescence quantum yields and lifetimes) and photochemical (singlet oxygen generation) properties of the target silicon(IV) phthalocyanines were investigated in DMSO. The photosensitizing efficiency of the studied phthalocyanines was tested against human cervical cancer (HeLa) cells at different photosensitizer concentrations. Both axially mono- and bis-biotin substituted silicon(IV) phthalocyanines present high photocytotoxicity against HeLa cancer cells with the cell survival degree ranging from 13% to 50%. The photosensitivity and the intensity of damage were found to be directly related to the concentration of the used photosensitizers. According to the obtained results, both silicon(IV) phthalocyanine derivatives could be promising as photosensitizers for treatment of cancer by PDT technique.
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Affiliation(s)
| | - Meltem Göksel
- Gebze Technical University, Department of Chemistry, Gebze, 41400, Kocaeli, Turkey
- Kocaeli University, Kosekoy Vocational School, Kartepe, Kocaeli 41135, Turkey
| | - Mahmut Durmuş
- Gebze Technical University, Department of Chemistry, Gebze, 41400, Kocaeli, Turkey
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45
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Moret F, Reddi E. Strategies for optimizing the delivery to tumors of macrocyclic photosensitizers used in photodynamic therapy (PDT). J PORPHYR PHTHALOCYA 2017. [DOI: 10.1142/s1088424617300014] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This review briefly summaries the principles and mechanisms of action of photodynamic therapy (PDT) as concerns its application in the oncological field, highlighting its drawbacks and some of the strategies that have been or are being explored to overcome them. The major aim is to increase the efficiency and selectivity of the photosensitizer (PS) uptake in the cancer cells for optimizing the PDT effects on tumors while sparing normal cells. Some attempts to achieve this are based on the conjugation of the PS to biomolecules (small ligands, peptides) functioning as carriers with the ability to efficiently penetrate cells and/or specifically recognize and bind proteins/receptors overexpressed on the surface of cancer cells. Alternatively, the PS can be entrapped in nanocarriers derived from various types of materials that can target the tumor by exploiting the enhanced permeability and retention (EPR) effects. The use of nanocarriers is particularly attractive because it allows the simultaneous delivery of more than one drug with the possibility of combining PDT with other therapeutic modalities.
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Affiliation(s)
- Francesca Moret
- Department of Biology, University of Padova, via U. Bassi 58/B 35121 Padova, Italy
| | - Elena Reddi
- Department of Biology, University of Padova, via U. Bassi 58/B 35121 Padova, Italy
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46
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Weitsman G, Mitchell NJ, Evans R, Cheung A, Kalber TL, Bofinger R, Fruhwirth GO, Keppler M, Wright ZVF, Barber PR, Gordon P, de Koning T, Wulaningsih W, Sander K, Vojnovic B, Ameer-Beg S, Lythgoe M, Arnold JN, Årstad E, Festy F, Hailes HC, Tabor AB, Ng T. Detecting intratumoral heterogeneity of EGFR activity by liposome-based in vivo transfection of a fluorescent biosensor. Oncogene 2017; 36:3618-3628. [PMID: 28166195 PMCID: PMC5421598 DOI: 10.1038/onc.2016.522] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 11/12/2016] [Accepted: 12/21/2016] [Indexed: 12/20/2022]
Abstract
Despite decades of research in the epidermal growth factor receptor (EGFR) signalling field, and many targeted anti-cancer drugs that have been tested clinically, the success rate for these agents in the clinic is low, particularly in terms of the improvement of overall survival. Intratumoral heterogeneity is proposed as a major mechanism underlying treatment failure of these molecule-targeted agents. Here we highlight the application of fluorescence lifetime microscopy (FLIM)-based biosensing to demonstrate intratumoral heterogeneity of EGFR activity. For sensing EGFR activity in cells, we used a genetically encoded CrkII-based biosensor which undergoes conformational changes upon tyrosine-221 phosphorylation by EGFR. We transfected this biosensor into EGFR-positive tumour cells using targeted lipopolyplexes bearing EGFR-binding peptides at their surfaces. In a murine model of basal-like breast cancer, we demonstrated a significant degree of intratumoral heterogeneity in EGFR activity, as well as the pharmacodynamic effect of a radionuclide-labeled EGFR inhibitor in situ. Furthermore, a significant correlation between high EGFR activity in tumour cells and macrophage-tumour cell proximity was found to in part account for the intratumoral heterogeneity in EGFR activity observed. The same effect of macrophage infiltrate on EGFR activation was also seen in a colorectal cancer xenograft. In contrast, a non-small cell lung cancer xenograft expressing a constitutively active EGFR conformational mutant exhibited macrophage proximity-independent EGFR activity. Our study validates the use of this methodology to monitor therapeutic response in terms of EGFR activity. In addition, we found iNOS gene induction in macrophages that are cultured in tumour cell-conditioned media as well as an iNOS activity-dependent increase in EGFR activity in tumour cells. These findings point towards an immune microenvironment-mediated regulation that gives rise to the observed intratumoral heterogeneity of EGFR signalling activity in tumour cells in vivo.
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Affiliation(s)
- G Weitsman
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
| | - N J Mitchell
- Department of Chemistry, University College London, London, UK
| | - R Evans
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
| | - A Cheung
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
- Breast Cancer Now Research Unit, King’s College London, London, UK
| | - T L Kalber
- UCL Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London, UK
| | - R Bofinger
- Department of Chemistry, University College London, London, UK
| | - G O Fruhwirth
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
| | - M Keppler
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
| | - Z V F Wright
- Department of Chemistry, University College London, London, UK
| | - P R Barber
- Gray Laboratories, Department of Oncology, Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Oxford, UK
| | - P Gordon
- Breast Cancer Now Research Unit, King’s College London, London, UK
| | - T de Koning
- Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
| | - W Wulaningsih
- Cancer Epidemiology Group, Division of Cancer Studies, King’s College London, London, UK
| | - K Sander
- Institute of Nuclear Medicine, University College London, London, UK
| | - B Vojnovic
- Gray Laboratories, Department of Oncology, Cancer Research UK and Medical Research Council Oxford Institute for Radiation Oncology, Oxford, UK
| | - S Ameer-Beg
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
| | - M Lythgoe
- UCL Centre for Advanced Biomedical Imaging, Division of Medicine, University College London, London, UK
| | - J N Arnold
- Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
| | - E Årstad
- Institute of Nuclear Medicine, University College London, London, UK
| | - F Festy
- King’s College London Dental Institute, Tissue Engineering and Biophotonics, Guy’s Hospital Campus, London, UK
| | - H C Hailes
- Department of Chemistry, University College London, London, UK
| | - A B Tabor
- Department of Chemistry, University College London, London, UK
| | - T Ng
- Richard Dimbleby Department of Cancer Research, Randall Division & Division of Cancer Studies, Kings College London, Guy’s Medical School Campus, London, UK
- Breast Cancer Now Research Unit, King’s College London, London, UK
- UCL Cancer Institute, Paul O’Gorman Building, University College London, London, UK
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47
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Carrión EN, Santiago J, Sabatino D, Gorun SM. Synthesis and Photophysical and Photocatalytic Properties of a Highly Fluorinated and Durable Phthalocyanine–Peptide Bioconjugate for Potential Theranostic Applications. Inorg Chem 2017; 56:7210-7216. [DOI: 10.1021/acs.inorgchem.7b00847] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Erik N. Carrión
- Center for Functional
Materials, Seton Hall University, 400 South Orange Avenue, South Orange, New Jersey 07079, United States
- Department
of Chemistry and Biochemistry, Seton Hall University, 400 South
Orange Avenue, South Orange, New Jersey 07079, United States
| | - Jenyffer Santiago
- Center for Functional
Materials, Seton Hall University, 400 South Orange Avenue, South Orange, New Jersey 07079, United States
- Department
of Chemistry and Biochemistry, Seton Hall University, 400 South
Orange Avenue, South Orange, New Jersey 07079, United States
| | - David Sabatino
- Department
of Chemistry and Biochemistry, Seton Hall University, 400 South
Orange Avenue, South Orange, New Jersey 07079, United States
| | - Sergiu M. Gorun
- Center for Functional
Materials, Seton Hall University, 400 South Orange Avenue, South Orange, New Jersey 07079, United States
- Department
of Chemistry and Biochemistry, Seton Hall University, 400 South
Orange Avenue, South Orange, New Jersey 07079, United States
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48
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Zhao N, Williams TM, Zhou Z, Fronczek FR, Sibrian-Vazquez M, Jois SD, Vicente MGH. Synthesis of BODIPY-Peptide Conjugates for Fluorescence Labeling of EGFR Overexpressing Cells. Bioconjug Chem 2017; 28:1566-1579. [PMID: 28414435 DOI: 10.1021/acs.bioconjchem.7b00211] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Regioselective functionalization of 2,3,5,6,8-pentachloro-BODIPY 1 produced unsymmetric BODIPY 5, bearing an isothiocyanate group suitable for conjugation, in only four steps. The X-ray structure of 5 reveals a nearly planar BODIPY core with aryl dihedral angles in the range 47.4-62.9°. Conjugation of 5 to two EGFR-targeting pegylated peptides, 3PEG-LARLLT (6) and 3PEG-GYHWYGYTPQNVI (7), under mild conditions (30 min at room temperature), afforded BODIPY conjugates 8 and 9 in 50-80% isolated yields. These conjugates showed red-shifted absorption and emission spectra compared with 5, in the near-IR region, and were evaluated as potential fluorescence imaging agents for EGFR overexpressing cells. SPR and docking investigations suggested that conjugate 8 bearing the LARLLT sequence binds to EGFR more effectively than 9 bearing the GYHWYGYTPQNVI peptide, in part due to the lower solubility of 9, and its tendency for aggregation at concentrations above 10 μM. Studies in human carcinoma HEp2 cells overexpressing EGFR demonstrated low dark and photo cytotoxicities for BODIPY 5 and the two peptide conjugates, and remarkably high cellular uptake for both conjugates 8 and 9, up to 90-fold compared with BODIPY 5 after 1 h. Fluorescence imaging studies in HEp2 cells revealed subcellular localization of the BODIPY-peptide conjugates mainly in the Golgi apparatus and the cell lysosomes. The low cytotoxicity of the new conjugates and their remarkably high uptake into EGFR overexpressing cells renders them promising imaging agents for cancers overexpressing EGFR.
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Affiliation(s)
- Ning Zhao
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Tyrslai M Williams
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Zehua Zhou
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Frank R Fronczek
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
| | - Martha Sibrian-Vazquez
- Department of Chemistry, Portland State University , Portland, Oregon 97201, United States
| | - Seetharama D Jois
- Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe , Monroe, Louisiana 71201, United States
| | - M Graça H Vicente
- Department of Chemistry, Louisiana State University , Baton Rouge, Louisiana 70803, United States
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49
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Mayr J, Hager S, Koblmüller B, Klose MHM, Holste K, Fischer B, Pelivan K, Berger W, Heffeter P, Kowol CR, Keppler BK. EGFR-targeting peptide-coupled platinum(IV) complexes. J Biol Inorg Chem 2017; 22:591-603. [PMID: 28405842 PMCID: PMC5443859 DOI: 10.1007/s00775-017-1450-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 03/13/2017] [Indexed: 12/18/2022]
Abstract
The high mortality rate of lung cancer patients and the frequent occurrence of side effects during cancer therapy demonstrate the need for more selective and targeted drugs. An important and well-established target for lung cancer treatment is the occasionally mutated epidermal growth factor receptor (EGFR). As platinum(II) drugs are still the most important therapeutics against lung cancer, we synthesized in this study the first platinum(IV) complexes coupled to the EGFR-targeting peptide LARLLT (and the shuffled RTALLL as reference). Notably, HPLC–MS measurements revealed two different peaks with the same molecular mass, which turned out to be a transcyclization reaction in the linker between maleimide and the coupled cysteine moiety. With regard to the EGFR specificity, subsequent biological investigations (3-day viability, 14-day clonogenic assays and platinum uptake) on four different cell lines with different verified EGFR expression levels were performed. Unexpectedly, the results showed neither an enhanced activity nor an EGFR expression-dependent uptake of our new compounds. Consequently, fluorophore-coupled peptides were synthesized to re-evaluate the targeting ability of LARLLT itself. However, also with these molecules, flow cytometry measurements showed no correlation of drug uptake with the EGFR expression levels. Taken together, we successfully synthesized the first platinum(IV) complexes coupled to an EGFR-targeting peptide; however, the biological investigations revealed that LARLLT is not an appropriate peptide for enhancing the specific uptake of small-molecule drugs into EGFR-overexpressing cancer cells.
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Affiliation(s)
- Josef Mayr
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria
| | - Sonja Hager
- Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Bettina Koblmüller
- Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Matthias H M Klose
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria
| | - Katharina Holste
- Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Britta Fischer
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria
| | - Karla Pelivan
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria
| | - Walter Berger
- Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, A-1090, Vienna, Austria.,Research Cluster ''Translational Cancer Therapy Research'', University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria
| | - Petra Heffeter
- Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, A-1090, Vienna, Austria. .,Research Cluster ''Translational Cancer Therapy Research'', University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria.
| | - Christian R Kowol
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria. .,Research Cluster ''Translational Cancer Therapy Research'', University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria.
| | - Bernhard K Keppler
- Institute of Inorganic Chemistry, University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria.,Research Cluster ''Translational Cancer Therapy Research'', University of Vienna, Waehringer Strasse 42, A-1090, Vienna, Austria
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50
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Zhan QC, Shi XQ, Yan XH, Liu Q, Zhou JH, Zhou L, Wei SH. Breaking the reduced glutathione-activated antioxidant defence for enhanced photodynamic therapy. J Mater Chem B 2017; 5:6752-6761. [DOI: 10.1039/c7tb01233k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photodynamic therapy (PDT) has been applied in cancer treatment by utilizing reactive oxygen species (ROSs) to kill cancer cells.
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Affiliation(s)
- Qi-chen Zhan
- College of Chemistry and Materials Science
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
- Nanjing Normal University Nanjing (210023)
| | - Xian-qing Shi
- College of Chemistry and Materials Science
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
- Nanjing Normal University Nanjing (210023)
| | - Xiao-hong Yan
- College of Chemistry and Materials Science
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
- Nanjing Normal University Nanjing (210023)
| | - Qian Liu
- Department of Neurology
- Jinling Hospital
- Medical School of Nanjing University 305 East Zhongshan Road
- Nanjing
- P. R. China
| | - Jia-hong Zhou
- College of Chemistry and Materials Science
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
- Nanjing Normal University Nanjing (210023)
| | - Lin Zhou
- College of Chemistry and Materials Science
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
- Nanjing Normal University Nanjing (210023)
| | - Shao-hua Wei
- College of Chemistry and Materials Science
- Jiangsu Key Laboratory of Biofunctional Materials
- Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
- Key Laboratory of Applied Photochemistry
- Nanjing Normal University Nanjing (210023)
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