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Günther A, Zalewski P, Sip S, Ruszkowski P, Bednarczyk-Cwynar B. Acetylation of Oleanolic Acid Dimers as a Method of Synthesis of Powerful Cytotoxic Agents. Molecules 2024; 29:4291. [PMID: 39339286 PMCID: PMC11434080 DOI: 10.3390/molecules29184291] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 09/09/2024] [Accepted: 09/09/2024] [Indexed: 09/30/2024] Open
Abstract
Oleanolic acid, a naturally occurring triterpenoid compound, has garnered significant attention in the scientific community due to its diverse pharmacological properties. Continuing our previous work on the synthesis of oleanolic acid dimers (OADs), a simple, economical, and safe acetylation reaction was performed. The newly obtained derivatives (AcOADs, 3a-3n) were purified using two methods. The structures of all acetylated dimers (3a-3n) were determined based on spectral methods (IR, NMR). For all AcOADs (3a-3n), the relationship between the structure and the expected directions of pharmacological activity was determined using a computational method (QSAR computational analysis). All dimers were also tested for their cytotoxic activity on the SKBR-3, SKOV-3, PC-3, and U-87 cancer cell lines. HDF cell line was applied to evaluate the Selectivity Index of the tested compounds. All cytotoxic tests were performed with the application of the MTT assay. Finally, all dimers of oleanolic acid were subjected to DPPH and CUPRAC tests to evaluate their antioxidant activity. The obtained results indicate a very high level of cytotoxic activity (IC50 for most AcOADs below 5.00 µM) and a fairly high level of antioxidant activity (Trolox equivalent in some cases above 0.04 mg/mL).
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Affiliation(s)
- Andrzej Günther
- Department of Organic Chemistry, Faculty of Pharmacy, Poznan University of Medical Sciences, Collegium Pharmaceuticum 2 (CP.2), Rokietnicka Str. 3, 60-806 Poznan, Poland
| | - Przemysław Zalewski
- Department of Pharmacognosy and Biomaterials, Faculty of Pharmacy, Poznan University of Medical Sciences, Collegium Pharmaceuticum 1 (CP.1), Rokietnicka Str. 3, 60-806 Poznan, Poland
| | - Szymon Sip
- Department of Pharmacognosy and Biomaterials, Faculty of Pharmacy, Poznan University of Medical Sciences, Collegium Pharmaceuticum 1 (CP.1), Rokietnicka Str. 3, 60-806 Poznan, Poland
| | - Piotr Ruszkowski
- Department of Pharmacology, Faculty of Pharmacy, Poznan University of Medical Sciences, Collegium Pharmaceuticum 1 (CP.1), Rokietnicka Str. 3, 60-806 Poznan, Poland
| | - Barbara Bednarczyk-Cwynar
- Department of Organic Chemistry, Faculty of Pharmacy, Poznan University of Medical Sciences, Collegium Pharmaceuticum 2 (CP.2), Rokietnicka Str. 3, 60-806 Poznan, Poland
- Center of Innovative Pharmaceutical Technology (CITF), Rokietnicka Str. 3, 60-806 Poznan, Poland
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2
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Jannus F, Sainz J, Reyes-Zurita FJ. Principal Bioactive Properties of Oleanolic Acid, Its Derivatives, and Analogues. Molecules 2024; 29:3291. [PMID: 39064870 PMCID: PMC11279785 DOI: 10.3390/molecules29143291] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2024] [Revised: 07/10/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
Natural products have always played an important role in pharmacotherapy, helping to control pathophysiological processes associated with human disease. Thus, natural products such as oleanolic acid (OA), a pentacyclic triterpene that has demonstrated important activities in several disease models, are in high demand. The relevant properties of this compound have motivated re-searchers to search for new analogues and derivatives using the OA as a scaffold to which new functional groups have been added or modifications have been realized. OA and its derivatives have been shown to be effective in the treatment of inflammatory processes, triggered by chronic diseases or bacterial and viral infections. OA and its derivatives have also been found to be effective in diabetic disorders, a group of common endocrine diseases characterized by hyperglycemia that can affect several organs, including the liver and brain. This group of compounds has been reported to exhibit significant bioactivity against cancer processes in vitro and in vivo. In this review, we summarize the bioactive properties of OA and its derivatives as anti-inflammatory, anti-bacterial, antiviral, anti-diabetic, hepatoprotective, neuroprotective, and anticancer agents.
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Affiliation(s)
- Fatin Jannus
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain;
| | - Juan Sainz
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain;
- Genomic Oncology Area, GENYO, Centre for Genomics and Oncological Research, Pfizer/University of Granada/Andalusian Regional Government, Av. de la Ilustración, 114, PTS, 18016 Granada, Spain
- Instituto de Investigación Biosanitaria IBs.Granada, 18010 Granada, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), University of Barcelona, 08908 Barcelona, Spain
| | - Fernando J. Reyes-Zurita
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain;
- Instituto de Investigación Biosanitaria IBs.Granada, 18010 Granada, Spain
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3
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Triaa N, Znati M, Ben Jannet H, Bouajila J. Biological Activities of Novel Oleanolic Acid Derivatives from Bioconversion and Semi-Synthesis. Molecules 2024; 29:3091. [PMID: 38999041 PMCID: PMC11243203 DOI: 10.3390/molecules29133091] [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: 05/18/2024] [Revised: 06/17/2024] [Accepted: 06/26/2024] [Indexed: 07/14/2024] Open
Abstract
Oleanolic acid (OA) is a vegetable chemical that is present naturally in a number of edible and medicinal botanicals. It has been extensively studied by medicinal chemists and scientific researchers due to its biological activity against a wide range of diseases. A significant number of researchers have synthesized a variety of analogues of OA by modifying its structure with the intention of creating more potent biological agents and improving its pharmaceutical properties. In recent years, chemical and enzymatic techniques have been employed extensively to investigate and modify the chemical structure of OA. This review presents recent advancements in medical chemistry for the structural modification of OA, with a special focus on the biotransformation, semi-synthesis and relationship between the modified structures and their biopharmaceutical properties.
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Affiliation(s)
- Nahla Triaa
- Medicinal Chemistry and Natural Products Team, Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Faculty of Science of Monastir, University of Monastir, Avenue of Environment, Monastir 5019, Tunisia; (N.T.); (M.Z.)
- Laboratoire de Génie Chimique, Université Paul Sabatier, CNRS, INPT, UPS, 31062 Toulouse, France
| | - Mansour Znati
- Medicinal Chemistry and Natural Products Team, Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Faculty of Science of Monastir, University of Monastir, Avenue of Environment, Monastir 5019, Tunisia; (N.T.); (M.Z.)
| | - Hichem Ben Jannet
- Medicinal Chemistry and Natural Products Team, Laboratory of Heterocyclic Chemistry, Natural Products and Reactivity (LR11ES39), Faculty of Science of Monastir, University of Monastir, Avenue of Environment, Monastir 5019, Tunisia; (N.T.); (M.Z.)
| | - Jalloul Bouajila
- Laboratoire de Génie Chimique, Université Paul Sabatier, CNRS, INPT, UPS, 31062 Toulouse, France
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Guo Y, Peng X, Liu F, Zhang Q, Ding L, Li G, Qiu F. Potential of natural products in inflammation: biological activities, structure-activity relationships, and mechanistic targets. Arch Pharm Res 2024; 47:377-409. [PMID: 38739203 DOI: 10.1007/s12272-024-01496-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 04/23/2024] [Indexed: 05/14/2024]
Abstract
A balance between the development and suppression of inflammation can always be found in the body. When this balance is disturbed, a strong inflammatory response can damage the body. It sometimes is necessary to use drugs with a significant anti-inflammatory effect, such as nonsteroidal anti-inflammatory drugs and steroid hormones, to control inflammation in the body. However, the existing anti-inflammatory drugs have many adverse effects, which can be deadly in severe cases, making research into new safer and more effective anti-inflammatory drugs necessary. Currently, numerous types of natural products with anti-inflammatory activity and distinct structural features are available, and these natural products have great potential for the development of novel anti-inflammatory drugs. This review summarizes 260 natural products and their derivatives with anti-inflammatory activities in the last two decades, classified by their active ingredients, and focuses on their structure-activity relationships in anti-inflammation to lay the foundation for subsequent new drug development. We also elucidate the mechanisms and pathways of natural products that exert anti-inflammatory effects via network pharmacology predictions, providing direction for identifying subsequent targets of anti-inflammatory natural products.
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Affiliation(s)
- Yajing Guo
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Xuling Peng
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Fanfei Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Qi Zhang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Liqin Ding
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China
| | - Gen Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China.
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China.
| | - Feng Qiu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China.
- State Key Laboratory of Component-Based Chinese Medicine, Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China.
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai District, Tianjin, 301617, People's Republic of China.
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Yang YH, Dai SY, Deng FH, Peng LH, Li C, Pei YH. Recent advances in medicinal chemistry of oleanolic acid derivatives. PHYTOCHEMISTRY 2022; 203:113397. [PMID: 36029846 DOI: 10.1016/j.phytochem.2022.113397] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/14/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Oleanolic acid (OA), a ubiquitous pentacyclic oleanane-type triterpene isolated from edible and medicinal plants, exhibits a wide spectrum of pharmacological activities and tremendous therapeutic potential. However, the undesirable pharmacokinetic properties limit its application and development. Numerous researches on structural modifications of OA have been carried out to overcome this limitation and improve its pharmacokinetic and therapeutic properties. This review aims to compile and summarize the recent progresses in the medicinal chemistry of OA derivatives, especially on structure-activity relationship in the last few years (2010-2021). It gives insights into the rational design of bioactive derivatives from OA scaffold as promising therapeutic agents.
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Affiliation(s)
- Yi-Hui Yang
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China
| | - Si-Yang Dai
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China
| | - Fu-Hua Deng
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China
| | - Li-Huan Peng
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China
| | - Chang Li
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China.
| | - Yue-Hu Pei
- Department of Medicinal Chemistry and Natural Medicine Chemistry, College of Pharmacy, Harbin Medical University, Harbin, 150081, PR China.
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6
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In Vitro Metabolite Profiling and Anti-Inflammatory Activities of Rhodomyrtus Tomentosa with Red Blood Cell Membrane Stabilization Methods. Rep Biochem Mol Biol 2022; 11:502-510. [PMID: 36718296 PMCID: PMC9883021 DOI: 10.52547/rbmb.11.3.502] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 12/12/2022] [Indexed: 01/18/2023]
Abstract
Background Rhodomyrtus Tomentosa (Karamunting) is one of South Kalimantan's biodiversity. In previous research on asthma and coal dust exposure models, nebulization with an ethanol extract of R. tomentosa leaves has been shown to reduce inflammatory cells. This study aimed to investigate the anti-inflammatory activity on the stabilization of red blood cell membranes and to identify the chemical compounds present in extracts of R. tomentosa leaves. Methods Anti-inflammatory effect of R. tomentosa leaves was evaluated by in vitro red blood cell membrane stabilization methods. Nonsteroidal anti-inflammatory sodium diclofenac was used as the reference drug. The content of chemical compounds in the ethanol extract of R. tomentosa leaves was identified using Ultra Performance Liquid Chromatography-Mass Spectrometry (UPLC-MS). Results The results of inhibition of red blood cells membrane lysis showed the n-hexane fraction (concentration 25 ppm), ethyl acetate fraction (concentration 50 ppm), and a fraction of water (concentration 50 ppm) with an inhibition level of 54.5%, 81.8%, 63.6%, respectively. The ethyl acetate fraction showed the highest inhibition of hemolysis. This result is not significantly different from the standard anti-inflammatory sodium diclofenac (90.09%). Oleanonic acid and ursonic acid were two similar metabolites in subfractions ethyl acetate 1, 2, and 3, which may have anti-inflammatory properties. Conclusion R. Tomentosa leaves can have potency as an anti-inflammatory by increasing the red blood cell membrane stability equal to lysosome cells, depending on the concentration.
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Khwaza V, Oyedeji OO, Aderibigbe BA, Morifi E, Fonkui YT, Ndinteh DT, Nell M, Steenkamp V. Design of Oleanolic Acid-based Hybrid Compounds as Potential Pharmaceutical Scaffolds. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180818666210604112451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Infectious diseases, as well as cancer, are the leading causes of death
worldwide. Drug resistance usually results in their treatment requiring a combination of two or more
drugs.
Objective:
Oleanolic-based hybrid compounds were prepared via esterification and characterized
using FTIR, NMR and LC-MS. In vitro antibacterial and in vitro cytotoxicity studies were performed.
Method:
Oleanolic acid was hybridized with selected known pharmaceutical scaffolds via the carboxylic
acid functionality in order to develop therapeutics with increased biological activity. Antibacterial
activity was determined using the micro-dilution assay against selected Gram-positive and
Gram-negative bacteria and cytotoxicity using the sulforhodamine B assay.
Results:
Compound 8 displayed potent antibacterial effect against five strains of bacteria, such as
Bacillus subtilis, Staphylococcus aureus, Proteus vulgaris, Klebsiella oxytoca, and Escherichia coli,
with MIC values of 1.25, 0.078, 0.078, 1.25, 1.25 mg/mL when compared to the control, oleanolic
acid (MIC = 2.5 mg/mL). Furthermore, in vitro cytotoxicity, as determined using the SRB assay,
against selected cancer cells revealed that compound 7 was the most cytotoxic on MDA, DU145, and
MCF-7 cell lines with IC50 values of 69.87 ± 1.04, 73.2 ± 1.08, and 85.27 ± 1.02 μg/mL, respectively,
compared to oleanolic acid with an IC50 > 200 μg/mL.
Conclusion:
Hybridization of oleanolic acid was successful, and further development of these potential
antibacterial compounds with reduced cytotoxicity is therefore warranted.
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Affiliation(s)
- Vuyolwethu Khwaza
- Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Alice Campus, Alice, Eastern
Cape, South Africa
| | - Opeoluwa Oyehan Oyedeji
- Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Alice Campus, Alice, Eastern
Cape, South Africa
| | - Blessing Atim Aderibigbe
- Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Alice Campus, Alice, Eastern
Cape, South Africa
| | - Eric Morifi
- School of Chemistry, Mass Spectrometry division, University of the Witwatersrand, Johannesburg
Private Bag X3, WITS, 2050, South Africa
| | - Youmbi Thierry Fonkui
- Department of Biotechnology and Food Technology, Faculty of Science,
University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Derek Tantoh Ndinteh
- Department of Applied Chemistry,
Faculty of Science, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Margo Nell
- Department of
Pharmacology, Faculty of Health Sciences, University of Pretoria, South Africa
| | - Vanessa Steenkamp
- Department of
Pharmacology, Faculty of Health Sciences, University of Pretoria, South Africa
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8
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Jannus F, Medina-O’Donnell M, Neubrand VE, Marín M, Saez-Lara MJ, Sepulveda MR, Rufino-Palomares EE, Martinez A, Lupiañez JA, Parra A, Rivas F, Reyes-Zurita FJ. Efficient In Vitro and In Vivo Anti-Inflammatory Activity of a Diamine-PEGylated Oleanolic Acid Derivative. Int J Mol Sci 2021; 22:ijms22158158. [PMID: 34360922 PMCID: PMC8347335 DOI: 10.3390/ijms22158158] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/28/2022] Open
Abstract
Recent evidence has shown that inflammation can contribute to all tumorigenic states. We have investigated the anti-inflammatory effects of a diamine-PEGylated derivative of oleanolic acid (OADP), in vitro and in vivo with inflammation models. In addition, we have determined the sub-cytotoxic concentrations for anti-inflammatory assays of OADP in RAW 264.7 cells. The inflammatory process began with incubation with lipopolysaccharide (LPS). Nitric oxide production levels were also determined, exceeding 75% inhibition of NO for a concentration of 1 µg/mL of OADP. Cell-cycle analysis showed a reversal of the arrest in the G0/G1 phase in LPS-stimulated RAW 264.7 cells. Furthermore, through Western blot analysis, we have determined the probable molecular mechanism activated by OADP; the inhibition of the expression of cytokines such as TNF-α, IL-1β, iNOS, and COX-2; and the blocking of p-IκBα production in LPS-stimulated RAW 264.7 cells. Finally, we have analyzed the anti-inflammatory action of OADP in a mouse acute ear edema, in male BL/6J mice treated with OADP and tetradecanoyl phorbol acetate (TPA). Treatment with OADP induced greater suppression of edema and decreased the ear thickness 14% more than diclofenac. The development of new derivatives such as OADP with powerful anti-inflammatory effects could represent an effective therapeutic strategy against inflammation and tumorigenic processes.
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Affiliation(s)
- Fatin Jannus
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (F.J.); (M.M.); (M.J.S.-L.); (E.E.R.-P.); (J.A.L.)
| | - Marta Medina-O’Donnell
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (A.M.); (A.P.)
- Correspondence: (M.M.-O.); (F.R.); (F.J.R.-Z.); Tel.: +34-958-243-252 (F.J.R.-Z.)
| | - Veronika E. Neubrand
- Department of Cell Biology, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (V.E.N.); (M.R.S.)
| | - Milagros Marín
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (F.J.); (M.M.); (M.J.S.-L.); (E.E.R.-P.); (J.A.L.)
| | - Maria J. Saez-Lara
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (F.J.); (M.M.); (M.J.S.-L.); (E.E.R.-P.); (J.A.L.)
| | - M. Rosario Sepulveda
- Department of Cell Biology, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (V.E.N.); (M.R.S.)
| | - Eva E. Rufino-Palomares
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (F.J.); (M.M.); (M.J.S.-L.); (E.E.R.-P.); (J.A.L.)
| | - Antonio Martinez
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (A.M.); (A.P.)
| | - Jose A. Lupiañez
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (F.J.); (M.M.); (M.J.S.-L.); (E.E.R.-P.); (J.A.L.)
| | - Andres Parra
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (A.M.); (A.P.)
| | - Francisco Rivas
- Department of Organic Chemistry, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (A.M.); (A.P.)
- Correspondence: (M.M.-O.); (F.R.); (F.J.R.-Z.); Tel.: +34-958-243-252 (F.J.R.-Z.)
| | - Fernando J. Reyes-Zurita
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, University of Granada, Av. Fuentenueva, 18071 Granada, Spain; (F.J.); (M.M.); (M.J.S.-L.); (E.E.R.-P.); (J.A.L.)
- Correspondence: (M.M.-O.); (F.R.); (F.J.R.-Z.); Tel.: +34-958-243-252 (F.J.R.-Z.)
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Khwaza V, Oyedeji OO, Aderibigbe BA, Morifi E, Fonkui YT, Ndinteh DT, Steenkamp V. Synthesis, antibacterial, and cytotoxicity evaluation of oleanolic acid-4-aminoquinoline based hybrid compounds. ACTA ACUST UNITED AC 2021; 16:122-136. [PMID: 33568035 DOI: 10.2174/1574891x16666210210165547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/11/2021] [Accepted: 02/01/2021] [Indexed: 11/22/2022]
Abstract
AIM To prepare a class of oleanolic-based compounds. BACKGROUND Conventional drugs used to treat infectious diseases suffer from limitations such as drug toxicity and drug resistance. The resistance of microbes to antimicrobial agents is a significant challenge in treating microbial infections. Combining two or more drugs with different modes of action to treat microbial infections results in a delay in developing drug resistance by the microbes. However, it is challenging to select the appropriate choice of drugs for combination therapy due to the differences in stability and pharmacokinetic profile of the drugs.Therefore, developing hybrid compounds using the existing drugs is a promising approach to design effective antimicrobial agents. OBJECTIVES To prepare oleanolic-based hybrid compounds followed by characterization, in vitro antibacterial, and cytotoxicity evaluation. METHODS Oleanolic acid-4-aminoquinoline-based hybrid compounds weresynthesized via esterification and amidation. The compounds werecharacterized using FTIR, NMR, and UHPLC-HRMS. Oleanolic acid was isolated from the flower buds of Syszygium aromaticum (L.) Merr. & L.M.Perry, a specie from Kingdom Plantae, order Mytales in Myrtaceae family. Their antibacterial and cytotoxicity activity was determined against selected strains of bacteria assessed using the microdilution assay and sulforhodamine B assay against selected cancer cell lines. RESULTS The synthesized hybrid compounds exhibited significant antibacterial activity against the Gram-positive bacteria Enterococcus faecalis (ATCC13047), Bacillus subtilis (ATCC19659), Staphylococcus aureus as well as Gram-negative bacteria,Klebsiella oxytoca (ATCC8724), Escherischia coli (ATCC25922), and Proteus vulgaris (ATCC6380)with minimum inhibitory concentrations of 1.25 mg/mLcompared to oleanolic acid (2.5 mg/mL). Compounds 13 and 14 displayed significant cytotoxic effectsin vitro against the cancer cell lines (MCF-7 and DU 145) compared to the oleanolic acid (IC50 ˃ 200 µM). CONCLUSION The present study revealed that the modification of C28 of OA enhanced its biological properties.
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Affiliation(s)
- Vuyolwethu Khwaza
- Department of Chemistry, University of Fort Hare, Alice Campus, Alice, Eastern Cape. South Africa
| | - Opeoluwa O Oyedeji
- Department of Chemistry, University of Fort Hare, Alice Campus, Alice, Eastern Cape. South Africa
| | - Blessing A Aderibigbe
- Department of Chemistry, University of Fort Hare, Alice Campus, Alice, Eastern Cape. South Africa
| | - Eric Morifi
- School of Chemistry, Mass Spectrometry division, University of Witwatersrand, Johannesburg. South Africa
| | - Y T Fonkui
- Department of Biotechnology and Food Technology, University of Johannesburg, Doornfontein Campus, Johannesburg. South Africa
| | - D T Ndinteh
- Department of Applied Chemistry, University of Johannesburg, Doornfontein Campus, Johannesburg. South Africa
| | - V Steenkamp
- Department of Pharmacology, Faculty of Health Sciences, University of Pretoria. South Africa
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10
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Sen A. Prophylactic and therapeutic roles of oleanolic acid and its derivatives in several diseases. World J Clin Cases 2020; 8:1767-1792. [PMID: 32518769 PMCID: PMC7262697 DOI: 10.12998/wjcc.v8.i10.1767] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 03/27/2020] [Accepted: 05/01/2020] [Indexed: 02/05/2023] Open
Abstract
Oleanolic acid (OA) and its derivatives are widely found in diverse plants and are naturally effective pentacyclic triterpenoid compounds with broad prophylactic and therapeutic roles in various diseases such as ulcerative colitis, multiple sclerosis, metabolic disorders, diabetes, hepatitis and different cancers. This review assembles and presents the latest in vivo reports on the impacts of OA and OA derivatives from various plant sources and the biological mechanisms of OA activities. Thus, this review presents sufficient data proposing that OA and its derivatives are potential alternative and complementary therapies for the treatment and management of several diseases.
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Affiliation(s)
- Alaattin Sen
- Department of Molecular Biology and Genetics, Faculty of Life and Natural Sciences, Abdullah Gul University, Kayseri 38080, Turkey
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Nyakudya TT, Mukwevho E, Erlwanger KH. The protective effect of neonatal oral administration of oleanolic acid against the subsequent development of fructose-induced metabolic dysfunction in male and female rats. Nutr Metab (Lond) 2018; 15:82. [PMID: 30479649 PMCID: PMC6245863 DOI: 10.1186/s12986-018-0314-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 10/22/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Consumption of fructose-rich diets has been implicated in the increasing global prevalence of metabolic syndrome (MetS). Interventions during periods of early ontogenic developmental plasticity can cause epigenetic changes which program metabolism for positive or negative health benefits later in life. The phytochemical oleanolic acid (OA) possesses anti-diabetic and anti-obesity effects. We investigated the potential protective effects of neonatal administration of OA on the subsequent development of high fructose diet-induced metabolic dysfunction in rats. METHOD Male and female (N = 112) suckling rats were randomly assigned to four groups and administered orally: distilled water (DW), oleanolic acid (OA; 60 mg/kg), high-fructose solution (HF; 20% w/v) or OA + HF for 7 days. The rats were weaned onto normal commercial rat chow up to day 55. From day 56, half of the rats in each treatment group were continued on plain water and the rest on a high fructose solution as drinking fluid for 8 weeks. On day 110, the rats were subjected to an oral glucose tolerance test and then euthanased on day 112. Tissue and blood samples were collected to determine the effects of the treatments on visceral fat pad mass, fasting plasma levels of cholesterol, insulin, glucose, triglycerides, insulin resistance (HOMA-IR) and glucose tolerance. RESULTS Rats which consumed fructose as neonates and then later as adults (HF + F) and those which consumed fructose only in adulthood (DW + F) had significant increases in terminal body mass (females only), visceral fat mass (males and females), serum triglycerides (females only), epididymal fat (males only), fasting plasma glucose (males and females), impaired glucose metabolism (females only), β-cell dysfunction and insulin resistance (males and females) compared to the other treatment groups (P < 0.05). There were no differences in fasting serum cholesterol levels across all treatment groups in both male and female rats (P > 0.05). CONCLUSION We conclude that neonatal oral administration of OA during the critical window of developmental plasticity protected against the development of health outcomes associated with fructose-induced metabolic disorders in the rats.
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Affiliation(s)
- Trevor T. Nyakudya
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
- Department of Human Anatomy and Physiology, Faculty of Health Sciences, University of Johannesburg, Doornfontein, Johannesburg, 2028 South Africa
| | - Emmanuel Mukwevho
- Department of Biochemistry, Faculty of Natural Sciences & Agriculture, North West University, Mafikeng, Mmabatho, 2735 South Africa
| | - Kennedy H. Erlwanger
- School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg, 2193 South Africa
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Khwaza V, Oyedeji OO, Aderibigbe BA. Antiviral Activities of Oleanolic Acid and Its Analogues. Molecules 2018; 23:molecules23092300. [PMID: 30205592 PMCID: PMC6225463 DOI: 10.3390/molecules23092300] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 08/30/2018] [Accepted: 09/05/2018] [Indexed: 12/13/2022] Open
Abstract
Viral diseases, such as human immune deficiency virus (HIV), influenza, hepatitis, and herpes, are the leading causes of human death in the world. The shortage of effective vaccines or therapeutics for the prevention and treatment of the numerous viral infections, and the great increase in the number of new drug-resistant viruses, indicate that there is a great need for the development of novel and potent antiviral drugs. Natural products are one of the most valuable sources for drug discovery. Most natural triterpenoids, such as oleanolic acid (OA), possess notable antiviral activity. Therefore, it is important to validate how plant isolates, such as OA and its analogues, can improve and produce potent drugs for the treatment of viral disease. This article reports a review of the analogues of oleanolic acid and their selected pathogenic antiviral activities, which include HIV, the influenza virus, hepatitis B and C viruses, and herpes viruses.
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Affiliation(s)
- Vuyolwethu Khwaza
- Department of Chemistry, University of Fort Hare, Alice Campus, Alice 5700, Eastern Cape, South Africa.
| | - Opeoluwa O Oyedeji
- Department of Chemistry, University of Fort Hare, Alice Campus, Alice 5700, Eastern Cape, South Africa.
| | - Blessing A Aderibigbe
- Department of Chemistry, University of Fort Hare, Alice Campus, Alice 5700, Eastern Cape, South Africa.
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Neonatal intake of oleanolic acid attenuates the subsequent development of high fructose diet-induced non-alcoholic fatty liver disease in rats. J Dev Orig Health Dis 2018; 9:500-510. [PMID: 29792584 DOI: 10.1017/s2040174418000259] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dietary manipulations during the early postnatal period are associated with the development of metabolic disorders including non-alcoholic fatty liver disease (NAFLD) or long-term protection against metabolic dysfunction. We investigated the potential hepatoprotective effects of neonatal administration of oleanolic acid (OA), a phytochemical, on the subsequent development in adulthood, of dietary fructose-induced NAFLD. Male and female suckling rats (n=112) were gavaged with; distilled water (DW), OA (60 mg/kg), high fructose solution (HF; 20% w/v) and OA+HF (OAHF) for 7 days. The rats were weaned onto normal rat chow on day 21 up to day 55. From day 56, half of the rats in each treatment group were continued on plain water or HF as drinking fluid for 8 weeks. Hepatic lipid accumulation and hepatic histomorphometry were then determined. Fructose consumption in adulthood following neonatal fructose intake (HF+F) caused a 47-49% increase in hepatic lipid content of both male and female rats (P<0.05). However, fructose administered in adulthood only, caused a significant increase (P<0.05) in liver lipid content in females only. NAFLD activity scores for inflammation and steatosis were higher in the fructose-fed rats compared with other groups (P<0.05). Steatosis, low-grade inflammation and fibrosis were observed in rats that received HF+F. NAFLD area fraction for fibrosis was three times higher in rats that received fructose neonatally and in adulthood compared with the rats in the negative control group (P<0.05). Treatment with OA during a critical window of developmental plasticity in rats prevented the development of fructose-induced NAFLD.
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Zhou M, Zhang RH, Wang M, Xu GB, Liao SG. Prodrugs of triterpenoids and their derivatives. Eur J Med Chem 2017; 131:222-236. [DOI: 10.1016/j.ejmech.2017.03.005] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 03/01/2017] [Accepted: 03/03/2017] [Indexed: 12/12/2022]
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15
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Ren Y, Liu Y, Niu R, Liao X, Zhang J, Yang B. Host-guest inclusion system of oleanolic acid with methyl-β-cyclodextrin: Preparation, characterization and anticancer activity. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.03.071] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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16
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Rali S, Oyedeji OO, Aremu OO, Oyedeji AO, Nkeh-Chungag BN. Semisynthesis of Derivatives of Oleanolic Acid from Syzygium aromaticum and Their Antinociceptive and Anti-Inflammatory Properties. Mediators Inflamm 2016; 2016:8401843. [PMID: 27382191 PMCID: PMC4921646 DOI: 10.1155/2016/8401843] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 05/13/2016] [Accepted: 05/15/2016] [Indexed: 02/08/2023] Open
Abstract
Oleanolic acid is a pentacyclic triterpenoid compound widely found in plants and well known for its medicinal properties. Oleanolic acid (OA) was isolated from the ethyl acetate extract of Syzygium aromaticum flower buds. Semisynthesis afforded both acetate and ester derivatives. The derived compounds were monitored with thin layer chromatography and confirmed with nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry (MS), Fourier infrared (FT-IR) spectroscopy, and melting point (Mp). All these compounds were evaluated for their analgesic and anti-inflammatory properties at a dose of 40 mg/kg. Significant analgesic and anti-inflammatory effects were noted for all OA-derived compounds. In the formalin-induced pain test, the derivatives showed better analgesic effects compared to their precursor, whereas, in the tale flick test, oleanolic acid proved to be superior in analgesic effects compared to all its derivatives with the exception of the acetyl derivative. Acute inflammatory tests showed that acetyl derivatives possessed better anti-inflammatory activity compared to the other compounds. In conclusion, semisynthesis of oleanolic acid yielded several derivatives with improved solubility and enhanced analgesic and anti-inflammatory properties.
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Affiliation(s)
- Sibusiso Rali
- Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
| | - Opeoluwa O. Oyedeji
- Department of Chemistry, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
| | - Olukayode O. Aremu
- Department of Human Biology, Faculty of Health Sciences, Walter Sisulu University, Private Bag X1, Mthatha 5117, South Africa
| | - Adebola O. Oyedeji
- Department of Chemical and Physical Sciences, Faculty of Natural Sciences, Walter Sisulu University, Private Bag X1, Mthatha 5117, South Africa
| | - Benedicta N. Nkeh-Chungag
- Department of Biological and Environmental Science, Faculty of Natural Sciences, Walter Sisulu University, Private Bag X1, Mthatha 5117, South Africa
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17
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Ren Y, Liu Y, Yang Z, Niu R, Gao K, Yang B, Liao X, Zhang J. Solid inclusion complexes of oleanolic acid with amino-appended β-cyclodextrins (ACDs): Preparation, characterization, water solubility and anticancer activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 69:68-76. [PMID: 27612690 DOI: 10.1016/j.msec.2016.05.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 05/02/2016] [Accepted: 05/05/2016] [Indexed: 01/11/2023]
Abstract
Oleanolic acid (OA) is a pentacyclic triterpenoid acid of natural abundance in plants which possesses important biological activities. However, its medicinal applications were severely impeded by the poor water solubility and resultant low bioavailability and potency. In this work, studies on solid inclusion complexes of OA with a series of amino-appended β-cyclodextrins (ACDs) were conducted in order to address this issue. These complexes were prepared by suspension method and were well characterized by NMR, SEM, XRD, TG, DSC and Zeta potential measurement. The 2:1 inclusion mode of ACDs/OA complexes was elucidated by elaborate 2D NMR (ROESY). Besides, water solubility of OA was dramatically promoted by inclusion complexation with ACDs. Moreover, in vitro anticancer activities of OA against human cancer cell lines HepG2, HT29 and HCT116 were significantly enhanced after formation of inclusion complexes, while the apoptotic response results indicated their induction of apoptosis of cancer cells. This could provide a novel approach to development of novel pharmaceutical formulations of OA.
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Affiliation(s)
- Yufeng Ren
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Ying Liu
- Faculty of Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Zhikuan Yang
- Faculty of Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Raomei Niu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Kai Gao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Bo Yang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Xiali Liao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
| | - Jihong Zhang
- Faculty of Medicine, Kunming University of Science and Technology, Kunming 650500, China; Research Centre for Pharmaceutical Care and Quality Management, First People's Hospital of Yunnan Province, Kunming 650500, China.
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Long C, Yang J, Yang H, Li X, Wang G. Attenuation of renal ischemia/reperfusion injury by oleanolic acid preconditioning via its antioxidant, anti‑inflammatory, and anti‑apoptotic activities. Mol Med Rep 2016; 13:4697-704. [PMID: 27082705 DOI: 10.3892/mmr.2016.5128] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 01/20/2016] [Indexed: 12/13/2022] Open
Abstract
Ischemia/reperfusion (I/R)‑associated acute kidney injury is a major clinical problem in both native and transplanted kidneys. Renal I/R, and subsequent renal injury, may be attributed to oxidative stress, inflammation, and apoptosis. Oleanolic acid (OA) is a natural product, which possesses antioxidant, anti‑inflammatory, and anti‑apoptotic activities. The present study aimed to examine the effects of OA preconditioning on renal I/R and the possible underlying mechanisms. In a renal I/R model, rats were administered OA (12.5, 25 and 50 mg/kg) for 15 consecutive days prior to bilateral renal I/R induction. Serum samples and kidneys were then collected and stored for subsequent determination. The results of the present study demonstrated that OA significantly and dose‑dependently attenuated I/R‑induced renal damage. OA prevented renal I/R injury, as evidenced by decreased levels of blood urea nitrogen, creatinine, kidney injury molecule‑1 and lactate dehydrogenase. In addition, OA defended against oxidative stress, as reflected by decreased levels of methane dicarboxylic aldehyde, increased activities of superoxide dismutase, catalase and glutathione peroxidase, and increased glutathione (GSH) levels. Levels of proinflammatory cytokines, interferon‑γ, interleukin (IL)‑6) and myeloperoxidase, were also reduced by OA, whereas the anti‑inflammatory cytokine IL‑10 was increased. Furthermore, OA prevented I/R‑induced apoptotic cell death, and prevented decreases in the mRNA expression levels of nuclear factor erythroid 2‑related factor 2 (Nrf2) and γ‑glutamylcysteine ligase (GCLc). Conversely, buthionine sulphoximine attenuated the protective effects of OA on renal I/R injury. These results indicated that OA preconditioning may prevent I/R‑induced renal damage via antioxidant, anti‑inflammatory, and anti‑apoptotic activities. Stabilization of Nrf2/GCLc signaling and subsequent maintenance of the GSH pool is critical for the protective effects of OA against renal I/R injury. The present study reported a novel therapeutic strategy for the treatment of renal I/R injury.
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Affiliation(s)
- Chengmei Long
- Graduate Faculty, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Jinran Yang
- Department of Organ Transplantation, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Hua Yang
- Department of Organ Transplantation, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Xinchang Li
- Department of Organ Transplantation, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Gongxian Wang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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Yu Z, Sun W, Peng W, Yu R, Li G, Jiang T. Pharmacokinetics in Vitro and in Vivo of Two Novel Prodrugs of Oleanolic Acid in Rats and Its Hepatoprotective Effects against Liver Injury Induced by CCl4. Mol Pharm 2016; 13:1699-710. [PMID: 27018970 DOI: 10.1021/acs.molpharmaceut.6b00129] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Oleanolic acid (OA) is a well-known pentacyclic triterpenoid compound, which has been used as a dietary supplement and is supplied as an over-the-counter drug for the treatment of human liver diseases. These are reasons for the low bioavailability of OA which have restricted its wider application. In this study, two OA prodrugs (1,3-cyclic propanyl phosphate esters of OA) were designed and synthesized. The hepatoprotective effects of these prodrugs were evaluated against carbon tetrachloride (CCl4) induced liver injury in mice; the levels of alanine aminotransferase (ALT), lactic dehydrogenase (LDH), and aspartate aminotransferase (AST) were significantly increased, and the level of the hepatic malondialdehyde (MDA) was increased. The metabolism, in vitro, of the prodrugs was studied by incubation in rat liver microsome; the plasma pharmacokinetics and the biodistribution in vivo after intravenous (iv) injection to six rats were investigated, respectively. The prodrugs diminished gradually with time; most of the parent drugs were released within 30 min in vitro, and the presumed mechanism of the in vitro metabolism was confirmed. The plasma-concentration data in vivo was analyzed by a compartmental method: both the prodrugs and the corresponding released parent drugs existed at up to 48 h in rats. The t1/2 improved after intravenous administration in rats compared with direct injection of the parent drugs. All analyte concentrations were highest in the liver, and most of the prodrugs were excreted in feces (>47.11%). Therefore, 1,3-cyclic propanyl phosphate esters of OA can serve as a promising lead candidate for drugs.
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Affiliation(s)
- Zongjiang Yu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Weizhi Sun
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao 266101, China
| | - Weibing Peng
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Rilei Yu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Guoqiang Li
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
| | - Tao Jiang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Pharmacy, Ocean University of China , Qingdao 266003, P. R. China
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Oleanolic Acid Attenuates Insulin Resistance via NF-κB to Regulate the IRS1-GLUT4 Pathway in HepG2 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:643102. [PMID: 26843885 PMCID: PMC4710921 DOI: 10.1155/2015/643102] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Revised: 12/09/2015] [Accepted: 12/15/2015] [Indexed: 12/16/2022]
Abstract
The aim of our study is to elucidate the mechanisms of oleanolic acid (OA) on insulin resistance (IR) in HepG2 cells. HepG2 cells were induced with FFA as the insulin resistance model and were treated with OA. Then the glucose content and the levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were analyzed. Moreover, protein expression of nuclear factor kappa B (NF-κB), insulin receptor substrate 1(IRS1), and glucose transporter 4 (GLUT4) in cells treated with OA were measured by Western blot analysis. Additionally, IRS1 protein expression exposed to OA was detected after using pyrrolidine dithiocarbamate (PDTC).Our results revealed that OA decreased the glucose content in HepG2 cells in vitro. Moreover, OA reduced the levels of TNF-α and IL-6 and upregulated IRS1 and GLUT4 protein expression. Furthermore, OA also reduced NF-κB protein expression in insulin-resistant HepG2 cells. After blocking NF-κB, the expression of IRS1 protein had no obvious changes when treated with OA. OA attenuated insulin resistance and decreased the levels of TNF-α and IL-6. Meanwhile, OA decreased NF-κB protein expression and upregulated IRS1 and GLUT4 protein expression. Therefore, regulating the IRS1-GLUT4 pathway via NF-κB was the underlying mechanism of OA on insulin resistance.
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