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Wang X, Feng JH, Zeng CM, Zhang ZS, Cao FL, Zhang WH, Chen JX, Young DJ. [Fe IIICl(TMPPH 2)][Fe IIICl 4] 2: A Stand-Alone Molecular Nanomedicine That Induces High Cytotoxicity by Ferroptosis. Molecules 2024; 29:2495. [PMID: 38893373 PMCID: PMC11173869 DOI: 10.3390/molecules29112495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Developing clinically meaningful nanomedicines for cancer therapy requires the drugs to be effective, safe, simple, cheap, and easy to store. In the present work, we report that a simple cationic Fe(III)-rich salt of [FeIIICl(TMPPH2)][FeIIICl4]2 (Fe-TMPP) exhibits a superior anticancer performance on a broad spectrum of cancer cell lines, including breast, colorectal cancer, liver, pancreatic, prostate, and gastric cancers, with half maximal inhibitory concentration (IC50) values in the range of 0.098-3.97 μM (0.066-2.68 μg mL-1), comparable to the best-reported medicines. Fe-TMPP can form stand-alone nanoparticles in water without the need for extra surface modification or organic-solvent-assisted antisolvent precipitation. Critically, Fe-TMPP is TME-responsive (TME = tumor microenvironment), and can only elicit its function in the TME with overexpressed H2O2, converting H2O2 to the cytotoxic •OH to oxidize the phospholipid of the cancer cell membrane, causing ferroptosis, a programmed cell death process of cancer cells.
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Affiliation(s)
- Xiao Wang
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, China; (X.W.); (C.-M.Z.); (Z.-S.Z.); (F.-L.C.)
| | - Jia-Hao Feng
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China;
| | - Chun-Mei Zeng
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, China; (X.W.); (C.-M.Z.); (Z.-S.Z.); (F.-L.C.)
| | - Ze-Sheng Zhang
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, China; (X.W.); (C.-M.Z.); (Z.-S.Z.); (F.-L.C.)
| | - Feng-Lin Cao
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, China; (X.W.); (C.-M.Z.); (Z.-S.Z.); (F.-L.C.)
| | - Wen-Hua Zhang
- College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou 215123, China; (X.W.); (C.-M.Z.); (Z.-S.Z.); (F.-L.C.)
| | - Jin-Xiang Chen
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China;
| | - David J. Young
- Glasgow College UESTC, University of Electronic Science and Technology of China, Chengdu 611731, China;
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Pijeira MSO, Gomes-da-Silva NC, Ricci-Junior E, Alencar LMR, İlem-Özdemir D, Cavalcanti ADS, Machado DE, Perini JA, Santos-Oliveira R. Micellar solution of [ 223Ra]RaCl 2: Reaching renal excretion, potent efficacy in osteoblastic osteosarcoma in PDX model, biochemistry alterations and pharmacokinetics. Int J Pharm 2024; 652:123765. [PMID: 38195032 DOI: 10.1016/j.ijpharm.2023.123765] [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: 05/20/2023] [Revised: 11/27/2023] [Accepted: 12/31/2023] [Indexed: 01/11/2024]
Abstract
Despite the successful use of the radiopharmaceutical radium-223 dichloride ([223Ra]RaCl2) for targeted alpha therapy of castration-resistant prostate cancer patients with bone metastases, some short-term side effects, such as diarrhea and vomiting, have been documented, causing patient discomfort. Hence, we prepared a nanosized micellar solution of [223Ra]RaCl2 and evaluated its biodistribution, pharmacokinetics, and induced biochemical changes in healthy mice up to 96 h after intraperitoneal administration as an alternative to overcome the previous limitations. In addition, we evaluated the bone specificity of micellar [223Ra]RaCl2 in patient-derived xenografts in the osteosarcoma model. The biodistribution studies revealed the high bone-targeting properties of the micellar [223Ra]RaCl2. Interestingly, the liver uptake remained significantly low (%ID/g = 0.1-0.02) from 24 to 96 h after administration. In addition, the micellar [223Ra]RaCl2 exhibited a significantly higher uptake in left (%ID/g = 0.85-0.23) and right (%ID/g = 0.76-0.24) kidneys than in small (%ID/g = 0.43-0.06) and large intestines (%ID/g = 0.24-0.09) over time, suggesting its excretion pathway is primarily through the kidneys into the urine, in contrast to the non-micellar [223Ra]RaCl2. The micellar [223Ra]RaCl2 also had low distribution volume (0.055 ± 0.003 L) and longer elimination half-life (28 ± 12 days). This nanosystem was unable to change the enzymatic activities of alanine aminotransferase, aspartate aminotransferase, gamma GT, glucose, and liquiform lipase in the treated mice. Finally, microscopic examination of the animals' osteosarcoma tumors treated with micellar [223Ra]RaCl2 indicated regression of the tumor, with large areas of necrosis. In contrast, in the control group, we observed tumor cellularity and cell anaplasia, mitotic figures and formation of neoplastic extracellular bone matrix, which are typical features of osteosarcoma. Therefore, our findings demonstrated the efficiency and safety of nanosized micellar formulations to minimize the gastrointestinal excretion pathway of the clinical radiopharmaceutical [223Ra]RaCl2, in addition to promoting regression of the osteosarcoma. Further studies must be performed to assess dose-response outcomes and organ/tissue dosimetry for clinical translation.
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Affiliation(s)
- Martha Sahylí Ortega Pijeira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmaceuticals and Synthesis of Novel Radiopharmaceuticals, Rio de Janeiro 21941906, Brazil
| | - Natália Cristina Gomes-da-Silva
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmaceuticals and Synthesis of Novel Radiopharmaceuticals, Rio de Janeiro 21941906, Brazil
| | - Eduardo Ricci-Junior
- School of Pharmacy, DEFARMED, Rio de Janeiro Federal University, Rio de Janeiro 21941900, Brazil
| | | | - Derya İlem-Özdemir
- School of Pharmacy, Department of Radiopharmacy, Ege University, 35040 Bornova, Izmir, Turkey
| | - Amanda Dos Santos Cavalcanti
- Research Division, National Institute of Traumatology and Orthopedics, Rio de Janeiro 20940-070, Brazil; State University of Rio de Janeiro, Research Laboratory of Pharmaceutical Sciences, Rio de Janeiro 23070200, Brazil
| | - Daniel Escorsim Machado
- State University of Rio de Janeiro, Research Laboratory of Pharmaceutical Sciences, Rio de Janeiro 23070200, Brazil
| | - Jamila Alessandra Perini
- State University of Rio de Janeiro, Research Laboratory of Pharmaceutical Sciences, Rio de Janeiro 23070200, Brazil
| | - Ralph Santos-Oliveira
- Brazilian Nuclear Energy Commission, Nuclear Engineering Institute, Laboratory of Nanoradiopharmaceuticals and Synthesis of Novel Radiopharmaceuticals, Rio de Janeiro 21941906, Brazil; State University of Rio de Janeiro, Laboratory of Radiopharmacy and Nanoradiopharmaceuticals, Rio de Janeiro 23070200, Brazil.
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3
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Abd Ellah NH, Helmy AM, Tammam OY, El-Sherif MW, Abouelmagd SA. Dual-responsive in situ gelling polymer matrix for tunable ketamine general anesthesia in experimental animals. Int J Pharm 2024; 652:123820. [PMID: 38242258 DOI: 10.1016/j.ijpharm.2024.123820] [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: 09/01/2023] [Revised: 01/14/2024] [Accepted: 01/16/2024] [Indexed: 01/21/2024]
Abstract
Animal experimentation is a critical part of the drug development process and pharmaceutical research. General anesthesia is one of the most common procedures. Careful administration and dosing of anesthetics ensure animal safety and study success. However, repeated injections are needed to maintain anesthesia, leading to adverse effects. Ketamine, a dissociative anesthetic, is commonly used for inducing anesthesia in animals and suffers from a short half-life requiring repeated dosing. Herein, we report a novel system for controlled anesthesia post-intraperitoneal administration. A polymer solution called "premix" was developed using two stimuli-responsive polymers, Pluronic (PF) and Carbopol (CP). As the premix was mixed with ketamine solution and injected, it underwent in situ gelation, hence controlling ketamine release and anesthesia. The PF and CP concentrations were optimized for the gelation temperature and viscosity upon mixing with the ketamine solution. The optimal premix/ketamine formulation (1.5:1) was liquid at room temperature and gel at physiological conditions with favorable mucoadhesion and rheology. Premix retarded the release of ketamine, translating to tunable anesthesia in vivo. Anesthesia duration and recovery were tunable per ketamine dose with minimal side effects. Therefore, we propose the implementation of PF/CP premix as a vehicle for general anesthesia in animals for optimal duration and effect.
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Affiliation(s)
- Noura H Abd Ellah
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt; Department of Pharmaceutics, Faculty of Pharmacy, Badr University in Assiut, Naser City 2014101, Assiut, Egypt
| | - Abdelrahman M Helmy
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Deraya University, Minya 61768, Egypt; Pharmaceutical Engineering and 3D Printing (PharmE3D) Lab, Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Omar Y Tammam
- Department of Biochemistry, Faculty of Pharmacy, New Valley University, Alkharga, New Valley 72511, Egypt
| | - Mohamed W El-Sherif
- Department of Surgery, Faculty of Veterinary Medicine, New Valley University, Alkharga, New Valley 72511, Egypt.
| | - Sara A Abouelmagd
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt; Institute for Drug Development and Innovation Research, Assiut University, Assiut 71526, Egypt.
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de Freitas CF, de Araújo Santos J, Pellosi DS, Caetano W, Batistela VR, Muniz EC. Recent advances of Pluronic-based copolymers functionalization in biomedical applications. BIOMATERIALS ADVANCES 2023; 151:213484. [PMID: 37276691 DOI: 10.1016/j.bioadv.2023.213484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 05/22/2023] [Accepted: 05/25/2023] [Indexed: 06/07/2023]
Abstract
The design of polymeric biocompatible nanomaterials for biological and medical applications has received special attention in recent years. Among different polymers, the triblock type copolymers (EO)x(PO)y(EO)x or Pluronics® stand out due its favorable characteristics such as biocompatibility, low tissue adhesion, thermosensitivity, and structural capacity to produce different types of macro and nanostructures, e.g. micelles, vesicles, nanocapsules, nanospheres, and hydrogels. However, Pluronic itself is not the "magic bullet" and its functionalization via chemical synthesis following biologically oriented design rules is usually required aiming to improve its properties. Therefore, this paper presents some of the main publications on new methodologies for synthetic modifications and applications of Pluronic-based nanoconstructs in the biomedical field in the last 15 years. In general, the polymer modifications aim to improve physical-chemical properties related to the micellization process or physical entrapment of drug cargo, responsive stimuli, active targeting, thermosensitivity, gelling ability, and hydrogel formation. Among these applications, it can be highlighted the treatment of malignant neoplasms, infectious diseases, wound healing, cellular regeneration, and tissue engineering. Functionalized Pluronic has also been used for various purposes, including medical diagnosis, medical imaging, and even miniaturization, such as the creation of lab-on-a-chip devices. In this context, this review discusses the main scientific contributions to the designing, optimization, and improvement of covalently functionalized Pluronics aiming at new strategies focused on the multiple areas of the biomedical field.
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Affiliation(s)
- Camila Fabiano de Freitas
- Department of Chemistry, Federal University of Santa Catarina - UFSC, Eng. Agronômico Andrei Cristian Ferreira, s/n, Trindade, 88040-900 Florianópolis, Santa Catarina, Brazil.
| | - Jailson de Araújo Santos
- PhD Program in Materials Science and Engineering, Federal University of Piauí, Campus Petrônio Portela, Ininga, Teresina CEP 64049-550, Piauí, Brazil
| | - Diogo Silva Pellosi
- Laboratory of Hybrid Materials, Department of Chemistry, Federal University of São Paulo, Diadema, Brazil
| | - Wilker Caetano
- Department of Chemistry, State University of Maringá, 5790 Colombo Avenue, 87020-900 Maringá, Paraná, Brazil
| | - Vagner Roberto Batistela
- Department of Pharmacology and Therapeutics, State University of Maringá, 5790 Colombo Avenue, 87020-900 Maringá, Paraná, Brazil
| | - Edvani Curti Muniz
- Department of Chemistry, State University of Maringá, 5790 Colombo Avenue, 87020-900 Maringá, Paraná, Brazil; Department of Chemistry, Federal University of Piauí, Campus Petronio Portella, Ininga, Teresina CEP 64049-550, Piauí, Brazil.
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5
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Jin X, Zhang W, Shan J, He J, Qian H, Chen X, Wang X. Thermosensitive Hydrogel Loaded with Nickel-Copper Bimetallic Hollow Nanospheres with SOD and CAT Enzymatic-Like Activity Promotes Acute Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2022; 14:50677-50691. [PMID: 36326126 DOI: 10.1021/acsami.2c17242] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Various injury defense and repair functions are performed by the skin. Free radicals secreted after injury cause oxidative stress and inflammatory responses, which make wound healing difficult. However, the current metal nanomaterials for wound repair do not have sufficient catalytic activity or complex material design and cannot properly fit wounds. Therefore, it is imperative to develop more effective therapeutic approaches. This study investigated the effect of Ni4Cu2 hollow nanospheres composited with F127 hydrogel on promoting wound healing by applying them to wounds. Ni4Cu2 hollow nanospheres exhibited a superior spatial structure, contained many catalytic sites, and could be synthesized in a simple manner. In vitro experiments showed that Ni4Cu2 hollow nanospheres had superoxide dismutase-like activity and promoted fibroblast migration, angiogenesis, and macrophage polarization. F127, which is a thermosensitive, nontoxic, phase-change and porous hydrogel material, has proven to be an effective choice for injectable and sprayable medical dressings. Ni4Cu2 hollow nanospheres were mixed with F127 hydrogel without significantly affecting its performance. In addition to adapting to the complex, irregular gaps of acute wounds, the mixture lengthened the nanozyme release time, which enhanced healing. Based on the animal experiments, the Ni4Cu2/F127 composite hydrogel effectively promoted wound healing, epithelial regeneration, and the formation of skin appendages such as hair follicles in mice. Furthermore, the Ni4Cu2/F127 composite hydrogel was nontoxic to animals and had high biological safety. The Ni4Cu2/F127 composite hydrogel has provided an innovative strategy to develop composite hydrogels for the treatment of acute skin wounds.
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Affiliation(s)
- Xu Jin
- Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei230022, P. R. China
| | - Wei Zhang
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei230032, P. R. China
| | - Jie Shan
- Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei230022, P. R. China
| | - Jia He
- Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei230022, P. R. China
| | - Haisheng Qian
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei230032, P. R. China
| | - Xulin Chen
- Department of Burns, The First Affiliated Hospital of Anhui Medical University, Hefei230022, P. R. China
| | - Xianwen Wang
- School of Biomedical Engineering, Research and Engineering Center of Biomedical Materials, Anhui Provincial Institute of Translational Medicine, Anhui Medical University, Hefei230032, P. R. China
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Cacaccio JC, Durrani FA, Missert JR, Pandey RK. Photodynamic Therapy in Combination with Doxorubicin Is Superior to Monotherapy for the Treatment of Lung Cancer. Biomedicines 2022; 10:857. [PMID: 35453607 PMCID: PMC9024488 DOI: 10.3390/biomedicines10040857] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/29/2022] [Accepted: 04/01/2022] [Indexed: 02/01/2023] Open
Abstract
We have previously shown that a radioactive (123I)-analog of methyl 3-(1'-(iodobexyloxy) ethyl-3-devinylpyropheophorbide-a (PET-ONCO), derived from chlorophyll-a can be used for positron emission tomography (PET) imaging of a variety of tumors, including those where 18F-FDG shows limitations. In this study, the photodynamic therapy (PDT) efficacy of the corresponding non-radioactive photosensitizer (PS) was investigated in a variety of tumor types (NSCLC, SCC, adenocarcinoma) derived from lung cancer patients in mice tumor models. The in vitro and in vivo efficacy was also investigated in combination with doxorubicin, and a significantly enhanced long-term tumor response was observed. The toxicity and toxicokinetic profile of the iodinated PS was also evaluated in male and female Sprague-Dawley rats and Beagle dog at variable doses (single intravenous injections) to assess reversibility or latency of any effects over a 28-day dose free period. The no-observed-adverse-effect (NOAEL) of the PS was considered to be 6.5 mg/kg for male and female rats, and for dogs, 3.45 mg/kg, the highest dose levels evaluated, respectively. The corresponding plasma Cmax and AYClast for male and female rats were 214,000 and 229,000 ng/mL and 3,680,000 and 3,810,000 h * ng/mL, respectively. For male and female dogs, the corresponding plasma Cmax and AYClast were 76,000 and 92,400 ng/mL and 976,000 and 1,200,000 h * ng/mL, respectively.
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Affiliation(s)
- Joseph C. Cacaccio
- Photodynamic Therapy Center, Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA; (J.C.C.); (F.A.D.)
| | - Farukh A. Durrani
- Photodynamic Therapy Center, Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA; (J.C.C.); (F.A.D.)
| | | | - Ravindra K. Pandey
- Photodynamic Therapy Center, Cell Stress Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA; (J.C.C.); (F.A.D.)
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Senapati S, Darling RJ, Ross KA, Wannemeuhler MJ, Narasimhan B, Mallapragada SK. Self-assembling synthetic nanoadjuvant scaffolds cross-link B cell receptors and represent new platform technology for therapeutic antibody production. SCIENCE ADVANCES 2021; 7:eabj1691. [PMID: 34348905 PMCID: PMC8336949 DOI: 10.1126/sciadv.abj1691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Host antibody responses are pivotal for providing protection against infectious agents. We have pioneered a new class of self-assembling micelles based on pentablock copolymers that enhance antibody responses while providing a low inflammatory environment compared to traditional adjuvants. This type of "just-right" immune response is critical in the rational design of vaccines for older adults. Here, we report on the mechanism of enhancement of antibody responses by pentablock copolymer micelles, which act as scaffolds for antigen presentation to B cells and cross-link B cell receptors, unlike other micelle-forming synthetic block copolymers. We exploited this unique mechanism and developed these scaffolds as a platform technology to produce antibodies in vitro. We show that this novel approach can be used to generate laboratory-scale quantities of therapeutic antibodies against multiple antigens, including those associated with SARS-CoV-2 and Yersinia pestis, further expanding the value of these nanomaterials to rapidly develop countermeasures against infectious diseases.
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Affiliation(s)
- Sujata Senapati
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
| | - Ross J Darling
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, USA
| | - Kathleen A Ross
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
- Nanovaccine Institute, Iowa State University, Ames, IA, USA
| | - Michael J Wannemeuhler
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, USA
- Nanovaccine Institute, Iowa State University, Ames, IA, USA
| | - Balaji Narasimhan
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA.
- Nanovaccine Institute, Iowa State University, Ames, IA, USA
| | - Surya K Mallapragada
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA.
- Nanovaccine Institute, Iowa State University, Ames, IA, USA
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Dantas Lopes Dos Santos D, Besegato JF, de Melo PBG, Oshiro Junior JA, Chorilli M, Deng D, Bagnato VS, Rastelli ANDS. Curcumin-loaded Pluronic ® F-127 Micelles as a Drug Delivery System for Curcumin-mediated Photodynamic Therapy for Oral Application. Photochem Photobiol 2021; 97:1072-1088. [PMID: 33872402 DOI: 10.1111/php.13433] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/03/2021] [Accepted: 04/10/2021] [Indexed: 12/21/2022]
Abstract
Antimicrobial photodynamic therapy (aPDT) is promising for oral decontamination. Curcumin has been used as photosensitizer; however, the hydrophobic properties can negatively affect aPDT. This study evaluated the aPDT efficacy using Cur-loaded Pluronic® F-127 micelles against Streptococcus mutans and Candida albicans biofilms. Micelles characterization was performed by zeta potential, dynamic light scattering, transmission electron microscopy, absorption and fluorescence spectroscopy. Cur concentrations, cell viability by CFU mL-1 and confocal microscopy were determined. Data were analyzed by parametric and nonparametric tests under 5%. Cur-loaded Pluronic® F-127 exhibited spherical shape, suitable particle size (≤100 nm), adequate polydispersity index, best stability, lower photodegradation and autoaggregation compared to unloaded-Cur. Both microorganisms were sensitive to Cur-loaded Pluronic® F-127 micelles aPDT, with minimum inhibitory concentration (MIC) of 270 μm and 2.1093 μm for S. mutans and C. albicans suspended culture, respectively. Cur-loaded Pluronic® F-127 aPDT exhibited antibacterial/antifungal effect against the biofilms (~3 log10 reduction; P ≤ 0.05); however, similar to unloaded (P ≥ 0.05). Confocal images confirmed these results. Cur-loaded Pluronic® F-127 micelles exhibited good photo-chemical properties and may be a viable alternative to deliver Cur and to improve aPDT effect during the treatment of dental caries. Moreover, Pluronic® micelles can enhance the solubility, stability, permeability and control the release of Cur.
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Affiliation(s)
- Diego Dantas Lopes Dos Santos
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - João Felipe Besegato
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Priscila Borges Gobbo de Melo
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - João Augusto Oshiro Junior
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Marlus Chorilli
- Department of Drugs and Medicines, School of Pharmaceutical Sciences, São Paulo State University - UNESP, Araraquara, São Paulo, Brazil
| | - Dongmei Deng
- Department of Preventive Dentistry, Academic Centre for Dentistry Amsterdam - ACTA, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Vanderlei Salvador Bagnato
- Department of Physics and Materials Science, Physics Institute of São Carlos - IFSC, University of São Paulo - USP, São Carlos, São Paulo, Brazil
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Gjuroski I, Furrer J, Vermathen M. Probing the Interactions of Porphyrins with Macromolecules Using NMR Spectroscopy Techniques. Molecules 2021; 26:1942. [PMID: 33808335 PMCID: PMC8037866 DOI: 10.3390/molecules26071942] [Citation(s) in RCA: 9] [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: 02/24/2021] [Revised: 03/22/2021] [Accepted: 03/24/2021] [Indexed: 12/11/2022] Open
Abstract
Porphyrinic compounds are widespread in nature and play key roles in biological processes such as oxygen transport in blood, enzymatic redox reactions or photosynthesis. In addition, both naturally derived as well as synthetic porphyrinic compounds are extensively explored for biomedical and technical applications such as photodynamic therapy (PDT) or photovoltaic systems, respectively. Their unique electronic structures and photophysical properties make this class of compounds so interesting for the multiple functions encountered. It is therefore not surprising that optical methods are typically the prevalent analytical tool applied in characterization and processes involving porphyrinic compounds. However, a wealth of complementary information can be obtained from NMR spectroscopic techniques. Based on the advantage of providing structural and dynamic information with atomic resolution simultaneously, NMR spectroscopy is a powerful method for studying molecular interactions between porphyrinic compounds and macromolecules. Such interactions are of special interest in medical applications of porphyrinic photosensitizers that are mostly combined with macromolecular carrier systems. The macromolecular surrounding typically stabilizes the encapsulated drug and may also modify its physical properties. Moreover, the interaction with macromolecular physiological components needs to be explored to understand and control mechanisms of action and therapeutic efficacy. This review focuses on such non-covalent interactions of porphyrinic drugs with synthetic polymers as well as with biomolecules such as phospholipids or proteins. A brief introduction into various NMR spectroscopic techniques is given including chemical shift perturbation methods, NOE enhancement spectroscopy, relaxation time measurements and diffusion-ordered spectroscopy. How these NMR tools are used to address porphyrin-macromolecule interactions with respect to their function in biomedical applications is the central point of the current review.
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Affiliation(s)
| | | | - Martina Vermathen
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland; (I.G.); (J.F.)
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Targeted Nanoparticles for Fluorescence Imaging of Folate Receptor Positive Tumors. Biomolecules 2020; 10:biom10121651. [PMID: 33317162 PMCID: PMC7764199 DOI: 10.3390/biom10121651] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/05/2020] [Accepted: 12/07/2020] [Indexed: 12/15/2022] Open
Abstract
This report presents the synthesis and folate receptor target-specificity of amino-functionalized polyacrylamide nanoparticles (AFPAA NPs) for near-infrared (NIR) fluorescence imaging of cancer. For the synthesis of desired nano-constructs, the AFPAA NPs (hereafter referred to as NPs) were reacted with a NIR cyanine dye (CD) bearing carboxylic acid functionality by following our previously reported approach, and the resulting conjugate (NP-CD) on further reaction with folic acid (FA) resulted in a new nano-construct, FA-NP-CD, which demonstrated significantly higher uptake in folate receptor-positive breast cancer cells (KB+) and in folate receptor over-expressed tumors in vivo. The target-specificity of these nanoparticles was further confirmed by inhibition assay in folate receptor-positive (KB+) and -negative (HT-1080) cell lines. To show the advantages of polyacrylamide (PAA)-based NPs in folate receptor target-specificity, the CD used in preparing the FA-NP-CD construct was also reacted with folic acid alone and the synthetic conjugate (CD-FA) was also investigated for its target-specificity. Interestingly, in contrast to NPs (FA-NP-CD), the CD-FA conjugate did not show any significant in vitro or in vivo specificity toward folate receptors, showing the advantages of PAA-based nanotechnology in delivering the desired agent to tumor cells.
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