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Evaluation of the antibacterial activity of hecogenin acetate and its inhibitory potential of NorA and MepA efflux pumps from Staphylococcus aureus. Microb Pathog 2023; 174:105925. [PMID: 36462578 DOI: 10.1016/j.micpath.2022.105925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 11/18/2022] [Accepted: 11/29/2022] [Indexed: 12/02/2022]
Abstract
Antimicrobial drugs are of great importance in the control of bacterial infections. Its indiscriminate use contributes to the consolidation of bacterial resistance. Its applicability is due to its secondary metabolites, such as saponins, which are compounds with relevant antibacterial action. Hecogenin acetate is a saponin present in plants of the agave genus with analgesic, antioxidant, antinociceptive, cardioactive, anticancer, antifungal and antimicrobial activity. The present work aimed to identify the antibacterial activity of hecogenin acetate against strains of E. coli, P. aeruginosa and S. aureus and to investigate the NorA and MepA efflux pump inhibitory activity of S. aureus strains. The Minimum Inhibitory Concentration was evaluated by broth microdilution. The Antibiotic Activity Modifier effect and the assessment of efflux pump inhibition were evaluated by microdilution with sub-inhibitory concentrations. Hecogenin acetate showed minimal inhibitory concentration without significant relevance. In the evaluation of the potentiating activity of the antibiotic action, a greater antagonistic behavior is noticed. In the analyzes performed with the efflux pump, it was noticed that the hecogenin acetate does not interfere in the efflux pump mechanism of the analyzed bacteria.
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Erdagi SI, Yildiz U. Synthesis, Structural Analysis and Antiproliferative Activity of Nitrogen‐Containing Hetero Spirostan Derivatives: Oximes, Heterocyclic Ring‐Fused and Furostanes. ChemistrySelect 2022. [DOI: 10.1002/slct.202200439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sevinc Ilkar Erdagi
- Department of Chemistry Kocaeli University Umuttepe campus 41380 Kocaeli Turkey
| | - Ufuk Yildiz
- Department of Chemistry Kocaeli University Umuttepe campus 41380 Kocaeli Turkey
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Fabrication of Chitosan Nanofibers Containing Some Steroidal Compounds as a Drug Delivery System. Polymers (Basel) 2022; 14:polym14102094. [PMID: 35631977 PMCID: PMC9146270 DOI: 10.3390/polym14102094] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 02/06/2023] Open
Abstract
A novel drug delivery system based on chitosan nanofibers containing some steroidal derivatives was developed using an electrospinning process. Oxazolines and aziridines from the cholestane series of steroidal epoxides were successfully synthesized and characterized by elemental analysis, Fourier transforms infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1HNMR), and mass spectroscopy (MS). Steroidal-compound-loaded chitosan (ST-CH) nanofibers were fabricated using the electrospinning technique in the presence of polyvinylpyrrolidone (CH/PVP). The electrospun nanofibers were characterized by scanning electron microscopy (SEM). The swelling degree of the electrospun nanofibers and their steroidal compound release performance were studied as well. Furthermore, their antibacterial activity against gram-positive (Staphylococcus aurous) and gram-negative bacteria (Escherichia coli) was evaluated. The experimental data revealed that identical and bead-free nanofiber mats loaded with 10 Wt. % of synthesized steroidal derivatives had been obtained. The FTIR spectrum proved that no change occurred in the chitosan structure during the electrospinning process. The synthesized nanofiber mats showed a high swelling degree and a burst release of steroidal compounds after 2 h doping in phosphate buffer saline. In addition, the electrospun nanofibers containing 3β-chloro-N-amido-5α-cholestano-aziridine and those containing 3β-acetoxy-N-amido-5α-cholestano-aziridine were the most active, with activity indices of 91 and 104% in the case of S. aureus and 52% and 61% in the case of E. coli, respectively. The release mechanism by CH/PVP of the drug samples was studied based on the charge density and diffusion controlled factors. The oxazoline derivatives release mechanism from CH/PVP was evaluated by applying the suppositions of the Ritger-Peppas kinetic model and by estimating the transport exponent; the latter revealed the involvement of the solvent diffusion and chain relaxation processes. Tailored steroidal loaded-chitosan (ST-CH) nanofibers are expected to be feasible and efficient drug delivery systems.
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Pérez-Gómez CO, Vazquez-Chavez J, Yepéz R, García-Merinos JP, Ramírez-Díaz MI, del Río RE, Santillan R, López Y. Synthesis and structural characterization of an oxaziridine derived from 6-azadiosgenin. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Corona-Díaz A, García-Merinos JP, Ochoa ME, Del Río RE, Santillan R, Rojas-Lima S, Morzycki JW, López Y. TiCl 4 catalyzed cleavage of (25R)-22-oxo-23-spiroketals. Synthesis of sapogenins with furostanol and pyranone E rings on the side chain. Steroids 2019; 152:108488. [PMID: 31499076 DOI: 10.1016/j.steroids.2019.108488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/04/2019] [Accepted: 08/27/2019] [Indexed: 02/07/2023]
Abstract
The regioselective opening of the F ring of 22-oxo-23-spiroketals 7a-d using TiCl4 in acetic anhydride yielded the novel furostanols 11a-d along with cholestanic derivatives 8a-d with pyranone E ring. The structures of the new derivatives thus obtained were established using one- (DEPT) and two-dimensional 1H, 13C NMR experiments (COSY, HSQC, HMBC, NOESY). The 22α-hydroxyl orientation in compounds 11a-d was proposed by comparison of the 13C chemical shifts with those of other aglycone members of this family, and confirmed by combined NOESY and X-ray diffraction analysis of compound 11a.
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Affiliation(s)
- Alejandro Corona-Díaz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed.B-1, C.U., Morelia, Michoacán 58030, Mexico
| | - J Pablo García-Merinos
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed.B-1, C.U., Morelia, Michoacán 58030, Mexico
| | - María E Ochoa
- Departamento de Química, CINVESTAV-IPN, Apdo. Postal 14-740, México, D.F., 07000, Mexico
| | - Rosa E Del Río
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed.B-1, C.U., Morelia, Michoacán 58030, Mexico
| | - Rosa Santillan
- Departamento de Química, CINVESTAV-IPN, Apdo. Postal 14-740, México, D.F., 07000, Mexico
| | - Susana Rojas-Lima
- Área Académica de Química, Universidad Autonoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo Km 4.5, Ciudad Universitaria, 42184, Mineral de la Reforma, Hidalgo, Mexico
| | - Jacek W Morzycki
- Institute of Chemistry, University of Białystok, K. Ciołkowskiego 1 K, 15-245 Białystok, Poland
| | - Yliana López
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed.B-1, C.U., Morelia, Michoacán 58030, Mexico.
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Elsayed HE, Ebrahim HY, Haggag EG, Kamal AM, El Sayed KA. Rationally designed hecogenin thiosemicarbazone analogs as novel MEK inhibitors for the control of breast malignancies. Bioorg Med Chem 2017; 25:6297-6312. [PMID: 29066046 DOI: 10.1016/j.bmc.2017.09.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 09/16/2017] [Accepted: 09/21/2017] [Indexed: 12/29/2022]
Abstract
Natural products have documented oncology success history as valuable scaffolds for selective target modulation. Herein, the sapogenin hecogenin (1) was screened for its anti-breast cancer inhibitory capacity using in vitro assays, including proliferation, cytotoxicity, migration, invasion assays, and Western blotting. The results identified 1 as a propitious hit with modest activities attributed to the concurrent down-regulation of mitogen activated protein kinase kinase/extracellular signal-regulated kinase (MEK) distinctive downstream effectors. Guided by in silico 3D-structural insights of MAPK kinase domain, an extension strategy was adopted at 1's C-3 and C-12 aimed at the design of novel hecogenin-based analogs with improved target binding affinity. Thirty-three analogs were prepared and tested, among which hecogenin 12-(3'-methylphenyl thiosemicarbazone) (30) displayed the most potent selective anticancer effects. Analog 30 demonstrated antiproliferative, antimigratory and anti-invasive activities at low μM level, compared to the negligible effect on the non-tumorigenic MCF-10A mammary epithelial cells. Durable regression of breast tumor xenografts in athymic nude mice was observed after treatments with 30, compared to its parent hecogenin at the same dose regimen, confirmed the hit-to-lead promotion of this analog. Hecogenin-12-thiosemicarbazones, represented by 30, is a novel MEK inhibitory lead class to control breast neoplasms.
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Affiliation(s)
- Heba E Elsayed
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, USA; Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Helwan, Cairo 11795, Egypt
| | - Hassan Y Ebrahim
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, USA
| | - Eman G Haggag
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Helwan, Cairo 11795, Egypt
| | - Amel M Kamal
- Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Helwan, Cairo 11795, Egypt
| | - Khalid A El Sayed
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe, Monroe, LA 71201, USA.
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Aguilar-Valdez N, Maldonado-Domínguez M, Arcos-Ramos R, Romero-Ávila M, Santillan R, Farfán N. Synthesis of steroidal molecular compasses: exploration of the controlled assembly of solid organic materials. CrystEngComm 2017. [DOI: 10.1039/c7ce00157f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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8
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Arenas-González A, Mendez-Delgado LA, Merino-Montiel P, Padrón JM, Montiel-Smith S, Vega-Báez JL, Meza-Reyes S. Synthesis of monomeric and dimeric steroids containing [1,2,4]triazolo[1,5-a]pyrimidines. Steroids 2016; 116:13-19. [PMID: 27692994 DOI: 10.1016/j.steroids.2016.09.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 09/15/2016] [Accepted: 09/20/2016] [Indexed: 01/09/2023]
Abstract
The synthesis of several monomeric and dimeric steroidal [1,2,4]triazolo[1,5-a]pyrimidines (TPs) derived from steroids are described. These derivatives were prepared from α,β-unsaturated carbonyl compounds through a Claisen Schmidt condensation and rearrangement of the spiro moiety followed by a cycloaddition with 3-amino-1,2,4-triazole. The antiproliferative activity of compounds 7, 13-15 was tested against human cancer cells; several IG50 values were below 10μM.
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Affiliation(s)
- Ailed Arenas-González
- Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Químicas, Ciudad Universitaria, C.P. 72570 Puebla, Pue., Mexico
| | - Luis Antonio Mendez-Delgado
- Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Químicas, Ciudad Universitaria, C.P. 72570 Puebla, Pue., Mexico
| | - Penélope Merino-Montiel
- Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Químicas, Ciudad Universitaria, C.P. 72570 Puebla, Pue., Mexico
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain
| | - Sara Montiel-Smith
- Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Químicas, Ciudad Universitaria, C.P. 72570 Puebla, Pue., Mexico
| | - José Luis Vega-Báez
- Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Químicas, Ciudad Universitaria, C.P. 72570 Puebla, Pue., Mexico.
| | - Socorro Meza-Reyes
- Benemérita Universidad Autónoma de Puebla, Facultad de Ciencias Químicas, Ciudad Universitaria, C.P. 72570 Puebla, Pue., Mexico.
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