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Tanner L, Single AB, Bhongir RKV, Heusel M, Mohanty T, Karlsson CAQ, Pan L, Clausson CM, Bergwik J, Wang K, Andersson CK, Oommen RM, Erjefält JS, Malmström J, Wallner O, Boldogh I, Helleday T, Kalderén C, Egesten A. Small-molecule-mediated OGG1 inhibition attenuates pulmonary inflammation and lung fibrosis in a murine lung fibrosis model. Nat Commun 2023; 14:643. [PMID: 36746968 PMCID: PMC9902543 DOI: 10.1038/s41467-023-36314-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/26/2023] [Indexed: 02/08/2023] Open
Abstract
Interstitial lung diseases such as idiopathic pulmonary fibrosis (IPF) are caused by persistent micro-injuries to alveolar epithelial tissues accompanied by aberrant repair processes. IPF is currently treated with pirfenidone and nintedanib, compounds which slow the rate of disease progression but fail to target underlying pathophysiological mechanisms. The DNA repair protein 8-oxoguanine DNA glycosylase-1 (OGG1) has significant roles in the modulation of inflammation and metabolic syndromes. Currently, no pharmaceutical solutions targeting OGG1 have been utilized in the treatment of IPF. In this study we show Ogg1-targeting siRNA mitigates bleomycin-induced pulmonary fibrosis in male mice, highlighting OGG1 as a tractable target in lung fibrosis. The small molecule OGG1 inhibitor, TH5487, decreases myofibroblast transition and associated pro-fibrotic gene expressions in fibroblast cells. In addition, TH5487 decreases levels of pro-inflammatory mediators, inflammatory cell infiltration, and lung remodeling in a murine model of bleomycin-induced pulmonary fibrosis conducted in male C57BL6/J mice. OGG1 and SMAD7 interact to induce fibroblast proliferation and differentiation and display roles in fibrotic murine and IPF patient lung tissue. Taken together, these data suggest that TH5487 is a potentially clinically relevant treatment for IPF but further study in human trials is required.
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Affiliation(s)
- L Tanner
- Respiratory Medicine, Allergology, & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, SE-221 84, Lund, Sweden.
| | - A B Single
- Respiratory Medicine, Allergology, & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, SE-221 84, Lund, Sweden
| | - R K V Bhongir
- Respiratory Medicine, Allergology, & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, SE-221 84, Lund, Sweden
| | - M Heusel
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, SE-221 84, Lund, Sweden
| | - T Mohanty
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, SE-221 84, Lund, Sweden
| | - C A Q Karlsson
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, SE-221 84, Lund, Sweden
| | - L Pan
- Department of Microbiology and Immunology, University of Texas Medical Branch at Galveston, Galveston, TX, 77555, USA
| | - C-M Clausson
- Division of Airway Inflammation, Department of Experimental Medical Sciences, Lund University, SE-221 84, Lund, Sweden
| | - J Bergwik
- Respiratory Medicine, Allergology, & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, SE-221 84, Lund, Sweden
| | - K Wang
- Department of Microbiology and Immunology, University of Texas Medical Branch at Galveston, Galveston, TX, 77555, USA
| | - C K Andersson
- Respiratory Cell Biology, Department of Experimental Medical Sciences Lund, Lund University, SE-221 84, Lund, Sweden
| | - R M Oommen
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, SE-171 76, Stockholm, Sweden
| | - J S Erjefält
- Division of Airway Inflammation, Department of Experimental Medical Sciences, Lund University, SE-221 84, Lund, Sweden
| | - J Malmström
- Division of Infection Medicine, Department of Clinical Sciences, Lund University, SE-221 84, Lund, Sweden
| | - O Wallner
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, SE-171 76, Stockholm, Sweden
| | - I Boldogh
- Department of Microbiology and Immunology, University of Texas Medical Branch at Galveston, Galveston, TX, 77555, USA
| | - T Helleday
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, SE-171 76, Stockholm, Sweden
- Oxcia AB, Norrbackagatan 70C, SE-113 34, Stockholm, Sweden
- Weston Park Cancer Centre, Department of Oncology and Metabolism, University of Sheffield, Sheffield, S10 2RX, UK
| | - C Kalderén
- Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, SE-171 76, Stockholm, Sweden
- Oxcia AB, Norrbackagatan 70C, SE-113 34, Stockholm, Sweden
| | - A Egesten
- Respiratory Medicine, Allergology, & Palliative Medicine, Department of Clinical Sciences Lund, Lund University and Skåne University Hospital, SE-221 84, Lund, Sweden
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Shakya J, Kasana PK, Mohanty T. Investigation of Swift Heavy Ion Irradiated Reduced Graphene Oxide (rGO)/Molybdenum Disulfide (MoS₂) Nanocomposite Using Raman Spectroscopy. J Nanosci Nanotechnol 2020; 20:3174-3181. [PMID: 31635662 DOI: 10.1166/jnn.2020.17400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, a few layer molybdenum disulfide (MoS₂) and reduced graphene oxide (rGO) nanocomposite have been synthesized by liquid exfoliation method. The morphological and structural properties are analyzed using scanning electron microscopy and X-ray diffraction technique. The optical properties are also investigated using absorption and Raman spectroscopy. This report presents quantification of swift heavy ion irradiation induced defects using Raman spectroscopy. We found both Raman mode E12g and A1g corresponding to MoS₂ and Raman modes of rGO are strongly affected by increasing ions doses. The defect induced lattice strain in the rGO/MoS₂ nanocomposite is also estimated from Raman spectroscopy. MoS₂ layers are found to be much more sensitive than rGO in the rGO/MoS₂ nanocomposite. These types of study further used in device based application of rGO/MoS₂ nanocomposite system.
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Affiliation(s)
- Jyoti Shakya
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - P K Kasana
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - T Mohanty
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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Patel AS, Sahoo H, Mohanty T. Investigating the Energy Transfer from Dye Molecules to DNA Stabilized Au Nanoparticles. J Fluoresc 2016; 26:1849-55. [PMID: 27422695 DOI: 10.1007/s10895-016-1878-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 07/06/2016] [Indexed: 12/24/2022]
Abstract
Double-stranded DNA stabilized gold nanoparticles (Au NPs) are synthesized by chemical reduction method and characterized with different spectroscopic techniques such as UV-Visible absorption, Fourier transform infrared (FTIR), & circular-dichroism (CD) as well as transmission electron microscopy (TEM). These NPs show absorption maximum at 520 nm and size of most of the particles are of the order of 3.5 ± 1.0 nm. These Au NPs show crystalline nature as confirmed from electron diffraction pattern. The effect of formation of Au NPs on the macromolecule has been studied using infrared and circular dichroism spectroscopy. Formation of NPs causes conformational changes in the DNA molecules. These Au NPs are further used as resonant energy acceptor of fluorescence emission from dye molecules (Rhodamine 6G). The fluorescence intensity of Rhodamine 6G (R6G) is quenched in presence of Au NPs. The effect of DNA molecules on the fluorescence quenching and the rate of energy transfer from R6G molecules to Au NPs have been explored.
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Affiliation(s)
- Arun Singh Patel
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Harekrushna Sahoo
- Department of Chemistry, National Institute of Technology, Rourkela, 769008, India
| | - T Mohanty
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi, 110067, India.
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Patel AS, Kumar A, Mohanty T. Photoreduction altered work function of Au-TiO2 nanoparticles measured by scanning Kelvin probe microscopy. J Nanosci Nanotechnol 2013; 13:8217-8223. [PMID: 24266216 DOI: 10.1166/jnn.2013.7932] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The present study investigates the systematic changes observed in work function (WF) of Au-nanoparticles supported on TiO2 as a result of variation in surface plasmon resonance induced absorption intensity. Synthesis of hybrid Au-TiO2 nanoparticles was carried out by sol-gel process followed by photoreduction of gold (III) chloride trihydrate in presence of UV light. Surface Plasmon resonance appearing at 540 nm in the UV/Vis absorption spectra, confirms the formation of Au nanoparticles. The composition of these hybrid Au-TiO2 nanoparticles was determined from Rutherford back scattering studies. Transmission electron microscopy measurements reveal the size of synthesized Au nanoparticles to be 15 +/- 2 nm with well defined lattice fringes. With increase in photoreduction time, the concentration of Au nanoparticles increases, size remaining the same. To observe the efficiency of these hybrid nanoparticles towards photo-assisted applications, their work function was measured using scanning Kelvin probe microscope. The detail analysis of variation of their WF values with photoreduction time reveals that a plateau or saturation behavior of Au-TiO2 nanoparticles close to that of pure Au is achieved after a photoreduction time of 6 hours due to occurrence of maximum Au loading on TiO2 surface.
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Affiliation(s)
- Arun S Patel
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India
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Sathiyamoorthy D, Mohanty T, Srinivas K, Selvaraj D, Thorat DD. Beryllium Pebbles Preparation and Modeling of Rotating Electrode Process. Fusion Science and Technology 2012. [DOI: 10.13182/fst12-a13383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - T. Mohanty
- Bhabha Atomic Research Centre, Powder Metallurgy Division Vashi Complex, Navi Mumbai, India 400705
| | - K. Srinivas
- Bhabha Atomic Research Centre, Powder Metallurgy Division Vashi Complex, Navi Mumbai, India 400705
| | - D. Selvaraj
- Bhabha Atomic Research Centre, Powder Metallurgy Division Vashi Complex, Navi Mumbai, India 400705
| | - D. D. Thorat
- Bhabha Atomic Research Centre, Powder Metallurgy Division Vashi Complex, Navi Mumbai, India 400705
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Thakurdesai M, Mohanty T, John J, Rao TKG, Raychaudhuri P, Bhattacharyya V, Kanjilal D. Synthesis of nanodimensional TiO2 thin films. J Nanosci Nanotechnol 2008; 8:4231-4237. [PMID: 19049209 DOI: 10.1166/jnn.2008.an32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Nanodimensional TiO2 has wide application in the field of photocatalysis, photovoltaic and photochromic devices. In present investigation TiO2 thin films deposited by pulsed laser deposition method are irradiated by 100 MeV Ag ion beam to achieve growth of nanophases. The nanostructure evolution is characterized by atomic force microscopy (AFM). The phases of TiO2 formed after irradiation are identified by glancing angle X-ray diffraction and Raman spectroscopy. The particle radius estimated by AFM varies from 10-13 nm. Anatase phase of TiO2 is formed after irradiation. The blue shift observed in UV-VIS absorption spectra indicates the nanostructure formation. The shape and size of nanoparticles formed due to high electronic excitation depend upon thickness of the film.
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Affiliation(s)
- Madhavi Thakurdesai
- Department of Physics, University of Mumbai, Santa Cruz (E), Mumbai 400098, India
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