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Denofrio MP, Paredes JM, Yañuk JG, Giron MD, Salto R, Talavera EM, Crovetto L, Cabrerizo FM. Photosensitizing properties and subcellular localisation of 3,4-dihydro-β-carbolines harmaline and harmalol. Photochem Photobiol Sci 2022; 22:487-501. [PMID: 36402936 DOI: 10.1007/s43630-022-00328-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 10/18/2022] [Indexed: 11/21/2022]
Abstract
AbstractHarmaline (1) and harmalol (2) represent two 3,4-dihydro-β-carboline (DHβCs) most frequently reported in a vast number of living systems. Fundamental aspects including the photosensitizing properties, cellular uptake, as well as the cyto- and phototoxicity of 1 and 2 were investigated herein. The molecular basis underlying the investigated processes are elucidated. Data reveal that both alkaloids show a distinctive pattern of extracellular DNA photodamage. Compound 1 induces a DNA photodamage profile dominated by oxidised purines and sites of base loss (AP sites), whereas 2 mostly induces single-strand breaks (SSBs) in addition to a small extent of purine oxidative damage. In both cases, DNA oxidative damage would occur through type I mechanism. In addition, a concerted hydrolytic attack is suggested as an extra mechanism accounting for the SSBs formation photoinduced by 2. Subcellular internalisation, cyto- and phototoxicity of 1 and 2 and the corresponding full-aromatic derivatives harmine (3) and harmol (4) also showed quite distinctive patterns in a structure-dependent manner. These results are discussed in the framework of the potential biological, biomedical and/or pharmacological roles reported for these alkaloids.
Graphical abstract
The subtle structural difference (i.e., the exchange of a methoxy group for a hydroxyl substituent at C(7)) between harmaline and harmalol, gives rise to distinctive photosensitizing and subcellular localisation patterns.
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Affiliation(s)
- M Paula Denofrio
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Av. Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina.
- Escuela de Bio Y Nanotecnologías (UNSAM), Chascomús, Argentina.
| | - Jose M Paredes
- Department of Physical Chemistry, Faculty of Pharmacy, Unidad de Excelencia en Química Aplicada a Biomedicina Y Medioambiente (UEQ), University of Granada, Cartuja Campus, 18071, Granada, Spain
| | - Juan G Yañuk
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Av. Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina
- Escuela de Bio Y Nanotecnologías (UNSAM), Chascomús, Argentina
| | - Maria D Giron
- Department of Biochemistry and Molecular Biology II, Faculty of Pharmacy, Unidad de Excelencia en Química Aplicada a Biomedicina Y Medioambiente (UEQ), University of Granada, Cartuja Campus, 18071, Granada, Spain
| | - Rafael Salto
- Department of Biochemistry and Molecular Biology II, Faculty of Pharmacy, Unidad de Excelencia en Química Aplicada a Biomedicina Y Medioambiente (UEQ), University of Granada, Cartuja Campus, 18071, Granada, Spain
| | - Eva M Talavera
- Department of Physical Chemistry, Faculty of Pharmacy, Unidad de Excelencia en Química Aplicada a Biomedicina Y Medioambiente (UEQ), University of Granada, Cartuja Campus, 18071, Granada, Spain
| | - Luis Crovetto
- Department of Physical Chemistry, Faculty of Pharmacy, Unidad de Excelencia en Química Aplicada a Biomedicina Y Medioambiente (UEQ), University of Granada, Cartuja Campus, 18071, Granada, Spain.
| | - Franco M Cabrerizo
- Instituto Tecnológico de Chascomús (CONICET-UNSAM), Av. Intendente Marino Km 8.2, CC 164 (B7130IWA), Chascomús, Argentina.
- Escuela de Bio Y Nanotecnologías (UNSAM), Chascomús, Argentina.
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2
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Spectral characteristics of 3, 5-diaminobenzoic acid in pure and mixed solvents: Experimental and theoretical study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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3
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Hydroalcoholic mixtures: the effect of the solvent on the electronic spectrum of the indicator methyl orange. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02875-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Husain S, Mehata MS, Pandey N, Mishra H, Pant S. Reinvestigation of the photophysics of 3-aminobenzoic acid in neat and mixed binary solvents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 247:119100. [PMID: 33212332 DOI: 10.1016/j.saa.2020.119100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/10/2020] [Accepted: 10/13/2020] [Indexed: 06/11/2023]
Abstract
The present study elucidates the reinvestigation of the photophysical behavior of 3-aminobenzoic acid (3ABA) in solvents of different polarities using the steady-state spectroscopic techniques. Kamlet-Taft and Catalan solvatochromic models have been used to analyze the solvatochromic changes in neat solvents. The hydrogen bond donating ability of the solvent was found to be the main parameter affecting the spectral behavior of 3ABA. The solvatochromic characteristics of 3ABA have also been examined in binary solvent mixtures viz. acetonitrile (ACN)-methanol (MeOH) and benzene (BEN)-MeOH using the concept of preferential solvation. The preferential solvation of 3ABA shows unusual behavior for BEN-MeOH binary mixture and described unnoticed sigmoidal behavior in the ground state and synergistic impact in the excited state. Besides, the 3ABA was studied theoretically by quantum chemical calculations using (HF) Hartree-Fock and (DFT/B3LYP) density functional theories and its electronic absorption bands have been assigned by time-dependent density functional theory (TD-DFT). The effect of solvents on 3ABA was considered using a IEF-PCM-TDDFT (integral equation formalism of the polarizable continuum model- TDDFT) method. Thus, the theoretical results were found to be closer to the experimental results.
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Affiliation(s)
- Shahid Husain
- Photophysics Laboratory, Department of Physics, Centre of Advanced Study, DSB Campus, Kumaun University, Nainital 263002, India
| | - Mohan Singh Mehata
- Laser Spectroscopy Laboratory, Department of Applied Physics, Delhi Technological University, Bawana Road, Delhi 110042, India.
| | - Nupur Pandey
- Photophysics Laboratory, Department of Physics, Centre of Advanced Study, DSB Campus, Kumaun University, Nainital 263002, India
| | - Hirdyesh Mishra
- Physics Section, M.M.V., Banaras Hindu University (B.H.U.), Varanasi 221005, India
| | - Sanjay Pant
- Photophysics Laboratory, Department of Physics, Centre of Advanced Study, DSB Campus, Kumaun University, Nainital 263002, India
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