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Wei D, Huang Y, Wang B, Ma L, Karges J, Xiao H. Photo-Reduction with NIR Light of Nucleus-Targeting Pt IV Nanoparticles for Combined Tumor-Targeted Chemotherapy and Photodynamic Immunotherapy. Angew Chem Int Ed Engl 2022; 61:e202201486. [PMID: 35212437 DOI: 10.1002/anie.202201486] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Indexed: 12/19/2022]
Abstract
The development of PtIV prodrugs which are selectively reduced within cancerous cells into their PtII therapeutically active species has received increasing attention within the last decade. Despite recent research progress, the majority of investigated compounds are excited using ultraviolet or blue light. As the light penetration depth is low at these wavelengths, the treatment of deep-seated or large tumors is limited. To overcome this limitation, herein, the example of PtIV -functionalized nanoparticles that could be excited within the NIR region at 808 nm is reported. The polymer backbone which can self-assemble into nanoparticles was functionalized with PtIV complexes for chemotherapy, photosensitizers for photodynamic immunotherapy, and nucleus/cancer-targeting peptides. Upon irradiation, the PtIV center is reduced to PtII and the axially coordinated ligands are released, presenting a multimodal treatment. While selectively accumulating in tumorous tissue, the nanoparticles demonstrated the ability to eradicate a triple-negative breast cancer tumor inside a mouse model.
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Affiliation(s)
- Dengshuai Wei
- Beijing National Laboratory for Molecular Science, State Key Laboratory of Polymer Physical and Chemistry, Institute of Chemistry Chinese Academy of Science, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yun Huang
- Beijing National Laboratory for Molecular Science, State Key Laboratory of Polymer Physical and Chemistry, Institute of Chemistry Chinese Academy of Science, Beijing, 100190, China
| | - Bin Wang
- Beijing National Laboratory for Molecular Science, State Key Laboratory of Polymer Physical and Chemistry, Institute of Chemistry Chinese Academy of Science, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lili Ma
- College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, China
| | - Johannes Karges
- Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Haihua Xiao
- Beijing National Laboratory for Molecular Science, State Key Laboratory of Polymer Physical and Chemistry, Institute of Chemistry Chinese Academy of Science, Beijing, 100190, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
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Wei D, Huang Y, Wang B, Ma L, Karges J, Xiao H. Photo‐Reduction with NIR Light of Nucleus Targeting Pt(IV) Nanoparticles for Combined Tumor‐Targeted Chemotherapy and Photodynamic Immunotherapy. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202201486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dengshuai Wei
- Chinese Academy of Sciences Institute of Chemistry CHINA
| | - Yun Huang
- Chinese Academy of Sciences Institute of Chemistry CHINA
| | - Bin Wang
- Chinese Academy of Sciences Institute of Chemistry CHINA
| | - Lili Ma
- Hebei University College of Chemistry and Environmental Science CHINA
| | - Johannes Karges
- University of California San Diego Chemistry and Biochemistry 9500 Gilman Dr 92093 San Diego UNITED STATES
| | - Haihua Xiao
- Chinese Academy of Sciences Institute of Chemistry CHINA
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Freitag L, González L. The Role of Triplet States in the Photodissociation of a Platinum Azide Complex by a Density Matrix Renormalization Group Method. J Phys Chem Lett 2021; 12:4876-4881. [PMID: 34006109 PMCID: PMC8165699 DOI: 10.1021/acs.jpclett.1c00829] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 05/13/2021] [Indexed: 06/12/2023]
Abstract
Platinum azide complexes are appealing anticancer photochemotherapy drug candidates because they release cytotoxic azide radicals upon light irradiation. Here we present a density matrix renormalization group self-consistent field (DMRG-SCF) study of the azide photodissociation mechanism of trans,trans,trans-[Pt(N3)2(OH)2(NH3)2], including spin-orbit coupling. We find a complex interplay of singlet and triplet electronic excited states that falls into three different dissociation channels at well-separated energies. These channels can be accessed either via direct excitation into barrierless dissociative states or via intermediate doorway states from which the system undergoes non-radiative internal conversion and intersystem crossing. The high density of states, particularly of spin-mixed states, is key to aid non-radiative population transfer and enhance photodissociation along the lowest electronic excited states.
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N-Heterocyclic Carbene Platinum(IV) as Metallodrug Candidates: Synthesis and 195Pt NMR Chemical Shift Trend. Molecules 2020; 25:molecules25143148. [PMID: 32660104 PMCID: PMC7397185 DOI: 10.3390/molecules25143148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/06/2020] [Accepted: 07/08/2020] [Indexed: 11/24/2022] Open
Abstract
A series of octahedral platinum(IV) complexes functionalized with both N-heterocyclic carbene (NHC) ligands were synthesized according to a straightforward procedure and characterized. The coordination sphere around the metal was varied, investigating the influence of the substituted NHC and the amine ligand in trans position to the NHC. The influence of those structural variations on the chemical shift of the platinum center were evaluated by 195Pt NMR. This spectroscopy provided more insights on the impact of the structural changes on the electronic density at the platinum center. Investigation of the in vitro cytotoxicities of representative complexes were carried on three cancer cell lines and showed IC50 values down to the low micromolar range that compare favorably with the benchmark cisplatin or their platinum(II) counterparts bearing NHC ligands.
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Vasilchenko DB, Tkachev SV, Tsipis AC. Aquanitrato Complexes of Palladium, Rhodium, and Platinum: A Comparative 15
N NMR and DFT Study. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701140] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Danila B. Vasilchenko
- Nikolaev Institute of Inorganic Chemistry; Siberian Branch of the Russian Academy of Science; 630090 Novosibirsk Russia
- Novosibirsk State University; 630090 Novosibirsk Russia
| | - Sergey V. Tkachev
- Nikolaev Institute of Inorganic Chemistry; Siberian Branch of the Russian Academy of Science; 630090 Novosibirsk Russia
| | - Athanassios C. Tsipis
- Laboratory of Inorganic and General Chemistry; University of Ioannina; 45110 Ioannina Greece
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Application of Heteronuclear NMR Spectroscopy to Bioinorganic and Medicinal Chemistry ☆. REFERENCE MODULE IN CHEMISTRY, MOLECULAR SCIENCES AND CHEMICAL ENGINEERING 2018. [PMCID: PMC7157447 DOI: 10.1016/b978-0-12-409547-2.10947-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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