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Rostamighadi M, Kamelshahroudi A, Pitsitikas V, Jacobson KA, Salavati R. Pilot-Scale Screening of Clinically Approved Drugs to Identify Uridine Insertion/Deletion RNA Editing Inhibitors in Trypanosoma brucei. ACS Infect Dis 2024; 10:3289-3303. [PMID: 39118542 DOI: 10.1021/acsinfecdis.4c00394] [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: 08/10/2024]
Abstract
RNA editing pathway is a validated target in kinetoplastid parasites (Trypanosoma brucei, Trypanosoma cruzi, and Leishmania spp.) that cause severe diseases in humans and livestock. An essential large protein complex, the editosome, mediates uridine insertion and deletion in RNA editing through a stepwise process. This study details the discovery of editosome inhibitors by screening a library of widely used human drugs using our previously developed in vitro biochemical Ribozyme Insertion Deletion Editing (RIDE) assay. Subsequent studies on the mode of action of the identified hits and hit expansion efforts unveiled compounds that interfere with RNA-editosome interactions and novel ligase inhibitors with IC50 values in the low micromolar range. Docking studies on the ligase demonstrated similar binding characteristics for ATP and our novel epigallocatechin gallate inhibitor. The inhibitors demonstrated potent trypanocidal activity and are promising candidates for drug repurposing due to their lack of cytotoxic effects. Further studies are necessary to validate these targets using more definitive gene-editing techniques and to enhance the safety profile.
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Affiliation(s)
- Mojtaba Rostamighadi
- Institute of Parasitology, McGill University, Ste. Anne de Bellevue, Quebec H9X 3 V9, Canada
| | - Arezou Kamelshahroudi
- Institute of Parasitology, McGill University, Ste. Anne de Bellevue, Quebec H9X 3 V9, Canada
| | - Vanessa Pitsitikas
- Institute of Parasitology, McGill University, Ste. Anne de Bellevue, Quebec H9X 3 V9, Canada
| | - Kenneth A Jacobson
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, NIDDK, National Institutes of Health, 9000, Rockville Pike, Bethesda, Maryland 20892, United States
| | - Reza Salavati
- Institute of Parasitology, McGill University, Ste. Anne de Bellevue, Quebec H9X 3 V9, Canada
- Department of Biochemistry, McGill University, Montreal H3G 1Y6, Quebec, Canada
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Wang W, Ma Z, Shao Q, Wang J, Wu L, Huang X, Hu Z, Jiang N, Dai J, He L. Multi-MXene assisted large-scale manufacturing of electrochemical biosensors based on enzyme-nanoflower enhanced electrodes for the detection of H 2O 2 secreted from live cancer cells. NANOSCALE 2024; 16:12586-12598. [PMID: 38869377 DOI: 10.1039/d4nr01328j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
In situ monitoring of H2O2 in cellular microenvironments plays a critical role in the early diagnosis and pretreatment of cancer, but is limited by the lack of efficient and low-cost strategies for the large-scale preparation of real-time biosensors. Herein, a universal strategy for MXene-based composite inks combined with a scalable screen-printing process is validated in large-scale manufacturing of electrochemical biosensors for in situ detection of H2O2 secreted from live cells. Compositing biocompatible carboxymethyl cellulose (CMCS) with excellent conductive MXene, a water-based ink electrode (MXene/CMCS) with tunable viscosity is efficiently printed with desirable printing accuracy. Subsequently, the MXene/CMCS@HRP electrochemical biosensor exhibits stable electrochemical performance through HRP nanoflower modification, showing rapid electron transport and high electrocatalytic capacity, and demonstrating a low limit of detection (0.29 μM) with a wide linear detection range (0.5 μM-3 mM), superior sensitivity (56.45 μA mM-1 cm-2), long-term stability and high anti-interference ability. Moreover, this electrochemical biosensor is effectively employed for in situ detection of H2O2 secreted from HeLa cells, revealing good biocompatibility and outstanding biosensing capability. This proposed strategy not only extends the possibility of low-cost biomedical devices, but also provides a promising approach for early diagnosis and treatment of cancer.
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Affiliation(s)
- Wenwu Wang
- School of Mechanical Engineering, State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Zeyu Ma
- School of Mechanical Engineering, State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Qi Shao
- School of Mechanical Engineering, State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Jiangwang Wang
- School of Mechanical Engineering, State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Leixin Wu
- School of Mechanical Engineering, State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Xiyao Huang
- School of Mechanical Engineering, State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Zilu Hu
- School of Mechanical Engineering, State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, P. R. China.
| | - Nan Jiang
- West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, P. R. China
- Jinfeng Laboratory, Chongqing 401329, P. R. China
| | - Jun Dai
- School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China
| | - Liang He
- School of Mechanical Engineering, State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering, Sichuan University, Chengdu 610065, P. R. China.
- Med+X Center for Manufacturing, West China Hospital, Sichuan University, Chengdu 610041, P. R. China
- Yibin Industrial Technology Research Institute of Sichuan University, Yibin R&D Park of Sichuan University, Yibin 644005, P. R. China
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Orel VE, Diedkov AG, Ostafiichuk VV, Lykhova OO, Kolesnyk DL, Orel VB, Dasyukevich OY, Rykhalskyi OY, Diedkov SA, Prosvietova AB. Combination Treatment with Liposomal Doxorubicin and Inductive Moderate Hyperthermia for Sarcoma Saos-2 Cells. Pharmaceuticals (Basel) 2024; 17:133. [PMID: 38276006 PMCID: PMC10819935 DOI: 10.3390/ph17010133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/15/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
Despite efforts in osteosarcoma (OS) research, the role of inductive moderate hyperthermia (IMH) in delivering and enhancing the antitumor effect of liposomal doxorubicin formulations (LDOX) remains unresolved. This study investigated the effect of a combination treatment with LDOX and IMH on Saos-2 human OS cells. We compared cell viability using a trypan blue assay, apoptosis and reactive oxygen species (ROS) measured by flow cytometry and pro-apoptotic Bax protein expression examined by immunocytochemistry in response to IMH (42 MHz frequency, 15 W power for 30 min), LDOX (0.4 μg/mL), and LDOX plus IMH. The lower IC50 value of LDOX at 72 h indicated increased accumulation of the drug in the OS cells. LDOX plus IMH resulted in a 61% lower cell viability compared to no treatment. Moreover, IMH potentiated the LDOX action on the Saos-2 cells by promoting ROS production at temperatures of <42 °C. There was a 12% increase in cell populations undergoing early apoptosis with a less heterogeneous distribution of Bax after combination treatment compared to those treated with LDOX (p < 0.05). Therefore, we determined that IMH could enhance LDOX delivery and its antitumor effect via altered membrane permeabilization, ROS generation, and a lower level of visualized Bax heterogeneity in the Saos-2 cells, suggesting the potential translation of these findings into in vivo studies.
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Affiliation(s)
- Valerii E. Orel
- National Cancer Institute, 33/43 Zdanovska Str., 03022 Kyiv, Ukraine
- National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 16/2 Yangel Str., 03056 Kyiv, Ukraine
| | | | | | - Oleksandra O. Lykhova
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, 45 Vasylkivska Str., 03022 Kyiv, Ukraine
| | - Denys L. Kolesnyk
- R.E. Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology, 45 Vasylkivska Str., 03022 Kyiv, Ukraine
| | - Valerii B. Orel
- National Cancer Institute, 33/43 Zdanovska Str., 03022 Kyiv, Ukraine
- National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 16/2 Yangel Str., 03056 Kyiv, Ukraine
| | | | | | - Serhii A. Diedkov
- National Cancer Institute, 33/43 Zdanovska Str., 03022 Kyiv, Ukraine
| | - Anna B. Prosvietova
- National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 16/2 Yangel Str., 03056 Kyiv, Ukraine
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Raj A, Thomas RK, Vidya L, Aparna VM, Neelima S, Sudarsanakumar C. Exploring the cytotoxicity on human lung cancer cells and DNA binding stratagem of camptothecin functionalised silver nanoparticles through multi-spectroscopic, and calorimetric approach. Sci Rep 2023; 13:9045. [PMID: 37270606 DOI: 10.1038/s41598-023-34997-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 05/11/2023] [Indexed: 06/05/2023] Open
Abstract
The influence of nanoparticles inside the human body and their interactions with biological macromolecules need to be explored/studied prior to specific applications. The objective of this study is to find the potential of camptothecin functionalised silver nanoparticles (CMT-AgNPs) in biomedical applications. This article primarily investigates the binding stratagem of CMT-AgNPs with calf thymus DNA (ctDNA) through a series of spectroscopic and calorimetric methods and then analyses the anticancer activity and cytotoxicity of CMT-AgNPs. The nanoparticles were synthesized using a simple one pot method and characterized using UV-Visible, fourier transform infrared (FTIR) spectroscopy, X-ray diffraction and high-resolution transmission electron microscopy (HRTEM). The average size of CMT-AgNPs is 10 ± 2 nm. A group of experimental techniques such as UV-Visible spectrophotometry, fluorescence dye displacement assay, circular dichroism (CD) and viscosity analysis unravelled the typical groove binding mode of CMT-AgNPs with ctDNA. The CD measurement evidenced the minor conformational alterations of double helical structure of ctDNA in the presence of CMT-AgNPs. The information deduced from the isothermal titration calorimetry (ITC) experiment is that the binding was exothermic and spontaneous in nature. Moreover, all the thermodynamic binding parameters were extracted from the ITC data. The binding constants obtained from UV absorption experiments, fluorescence dye displacement studies and ITC were consistently in the order of 104 Mol-1. All these results validated the formation of CMT-AgNPs-ctDNA complex and the results unambiguously confirm the typical groove binding mode of CMT-AgNPs. An exhaustive in vitro MTT assay by CMT-AgNPs and CMT against A549, HT29, HeLa and L929 cell lines revealed the capability of CMT-AgNPs as a potential anticancer agent.
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Affiliation(s)
- Aparna Raj
- School of Pure and Applied Physics, Mahatma Gandhi University, P.D Hills (P.O), Kottayam, Kerala, 686 560, India
| | - Riju K Thomas
- School of Pure and Applied Physics, Mahatma Gandhi University, P.D Hills (P.O), Kottayam, Kerala, 686 560, India
- Bharata Mata College, Thrikkakara, Ernakulam, Kerala, 682032, India
| | - L Vidya
- School of Pure and Applied Physics, Mahatma Gandhi University, P.D Hills (P.O), Kottayam, Kerala, 686 560, India
| | - V M Aparna
- School of Pure and Applied Physics, Mahatma Gandhi University, P.D Hills (P.O), Kottayam, Kerala, 686 560, India
| | - S Neelima
- School of Pure and Applied Physics, Mahatma Gandhi University, P.D Hills (P.O), Kottayam, Kerala, 686 560, India
| | - C Sudarsanakumar
- School of Pure and Applied Physics, Mahatma Gandhi University, P.D Hills (P.O), Kottayam, Kerala, 686 560, India.
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