1
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Xiao Y, Cheng Y, Shi S, Li R, Dong H, Han F. Generation of xanthohumol derivatives through fungi-mediated biotransformation. Nat Prod Res 2024:1-7. [PMID: 39066549 DOI: 10.1080/14786419.2024.2381648] [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: 01/30/2024] [Revised: 07/03/2024] [Accepted: 07/13/2024] [Indexed: 07/28/2024]
Abstract
Xanthohumol (XTH, 1), a major prenylated chalcone in hops, has attracted considerable interests because of its pharmaceutical potency. To explore more related derivatives of XTH, its biotransformation was performed using the in vitro microbial model. Fungus Mucor sp. exhibited a robust biocatalytic feature to transform the substrate. Preparative fungi-mediated biotransformation led to the isolation of two new (2 and 5) and eight known (3, 4 and 6-11) metabolites. The two new metabolites were identified as (2″R)-dihydroxanthohumol B (2) and xanthohumol L 4'-O-β-D-glucopyranoside (5) based on the combined spectroscopic analysis. According to the cytotoxic activities of all metabolites, compounds 7 and 9 showed relatively sensitive cytotoxic activity against A375 and A549 cancer cell lines, respectively. These findings not only provided a biological approach to achieve the derivatives of XTH but also gave an information for the lead optimisation of XTH for the development of potential anti-cancer agents.
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Affiliation(s)
- Yina Xiao
- College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
- College of Pharmacy, Chonnam National University, Gwangju, Korea
| | - Yutong Cheng
- State Key Laboratory of Macromolecular Drugs and Large-scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Shi Shi
- State Key Laboratory of Macromolecular Drugs and Large-scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Rui Li
- College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Huijun Dong
- State Key Laboratory of Macromolecular Drugs and Large-scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
| | - Fubo Han
- College of Pharmacy, Chonnam National University, Gwangju, Korea
- State Key Laboratory of Macromolecular Drugs and Large-scale Manufacturing, School of Pharmaceutical Sciences, Liaocheng University, Liaocheng, China
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2
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Tronina T, Bartmańska A, Popłoński J, Rychlicka M, Sordon S, Filip-Psurska B, Milczarek M, Wietrzyk J, Huszcza E. Prenylated Flavonoids with Selective Toxicity against Human Cancers. Int J Mol Sci 2023; 24:ijms24087408. [PMID: 37108571 PMCID: PMC10138577 DOI: 10.3390/ijms24087408] [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: 03/16/2023] [Revised: 04/11/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
The antiproliferative activity of xanthohumol (1), a major prenylated chalcone naturally occurring in hops, and its aurone type derivative (Z)-6,4'-dihydroxy-4-methoxy-7-prenylaurone (2) were investigated. Both flavonoids, as well as cisplatin as a reference anticancer drug, were tested in vivo against ten human cancer cell lines (breast cancer (MCF-7, SK-BR-3, T47D), colon cancer (HT-29, LoVo, LoVo/Dx), prostate cancer (PC-3, Du145), lung cancer (A549) and leukemia (MV-4-11) and two normal cell lines (human lung microvascular endothelial (HLMEC)) and murine embryonic fibroblasts (BALB/3T3). Chalcone 1 and aurone 2 demonstrated potent to moderate anticancer activity against nine tested cancer cell lines (including drug-resistant ones). The antiproliferative activity of all the tested compounds against cancer and the normal cell lines was compared to determine their selectivity of action. Prenylated flavonoids, especially the semisynthetic derivative of xanthohumol (1), aurone 2, were found as selective antiproliferative agents in most of the used cancer cell lines, whereas the reference drug, cisplatin, acted non-selectively. Our findings suggest that the tested flavonoids can be considered strong potential candidates for further studies in the search for effective anticancer drugs.
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Affiliation(s)
- Tomasz Tronina
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland
| | - Agnieszka Bartmańska
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland
| | - Jarosław Popłoński
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland
| | - Magdalena Rychlicka
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland
| | - Sandra Sordon
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland
| | - Beata Filip-Psurska
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Weigla 12, 53-114 Wroclaw, Poland
| | - Magdalena Milczarek
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Weigla 12, 53-114 Wroclaw, Poland
| | - Joanna Wietrzyk
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Weigla 12, 53-114 Wroclaw, Poland
| | - Ewa Huszcza
- Department of Food Chemistry and Biocatalysis, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland
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3
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Zhai J, Sun B, Sang F. Progress of isolation, chemical synthesis and biological activities of natural chalcones bearing 2-hydroxy-3-methyl-3-butenyl group. Front Chem 2022; 10:964089. [PMID: 36046729 PMCID: PMC9420912 DOI: 10.3389/fchem.2022.964089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 07/20/2022] [Indexed: 11/13/2022] Open
Abstract
Chalcones have a three-carbon α,β-unsaturated carbonyl system composed of two phenolic rings. Many chalcones have shown broad spectrum of biological activities with clinical potentials against various diseases. They are usually abundant in seeds, fruit skin, bark and flowers of most edible plants. Among them, chalcones bearing 2-hydroxy-3-methyl-3-butenyl (HMB) group have been reported several times in the past few decades due to their novel scaffolds and numerous interesting biological activities. In this paper, we reviewed the isolation of twelve natural chalcones and a natural chalcone-type compound bearing 2-hydroxy-3-methyl-3-butenyl group discovered so far, and reviewed their synthesis methods and biological activities reported in the literature. We anticipate that this review will inspire further research of natural chalcones.
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Affiliation(s)
- Jiadai Zhai
- Research Center of Chemical Biology and Pharmaceutical Chemistry, School of Life Sciences and Medicine, Shandong University of Technology, Zibo, China
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Bingxia Sun
- Research Center of Chemical Biology and Pharmaceutical Chemistry, School of Life Sciences and Medicine, Shandong University of Technology, Zibo, China
| | - Feng Sang
- Research Center of Chemical Biology and Pharmaceutical Chemistry, School of Life Sciences and Medicine, Shandong University of Technology, Zibo, China
- *Correspondence: Feng Sang,
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4
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Carmo F, Silva C, Martel F. Inhibition of Glutamine Cellular Uptake Contributes to the Cytotoxic Effect of Xanthohumol in Triple-Negative Breast Cancer Cells. Nutr Cancer 2022; 74:3413-3430. [PMID: 35594207 DOI: 10.1080/01635581.2022.2076889] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Breast cancer constitutes the most incident cancer and one of the most common causes of cancer-related death. "Glutamine addiction", an important metabolic feature of cancer cells, is dependent on supply of this amino acid from external sources. In this study, the effect of several polyphenols (catechin, epicatechin, EGCG, catechin:lysine, naringenin, hesperidin, malvidin, delphinidin, kaempferol, quercetin, rutin, myricetin, resveratrol, xanthohumol, and chrysin) upon glutamine (3H-GLN) uptake by human breast epithelial adenocarcinoma cell lines with distinct characteristics (MCF-7 and MDA-MB-231) was assessed.Several polyphenols interfere with 3H-GLN uptake by both cell lines. Xanthohumol markedly decreases total and Na+-dependent 3H-GLN uptake and showed a cytotoxic and anti-proliferative effect in MDA-MB-231 cells. Xanthohumol is as an uncompetitive inhibitor of Na+-dependent 3H-GLN uptake and inhibits GPNA (L-γ-glutamyl-p-nitroanilide)-sensitive, both ASCT2 (alanine, serine, cysteine transporter 2)-mediated and non-ASCT2-mediated 3H-GLN uptake. Xanthohumol does not interfere with the transcription rates of ASCT2. The cytotoxic effect of xanthohumol, but not its anti-proliferative effect, is GPNA-sensitive and related to ASCT2 inhibition. Combination of xanthohumol with the breast cancer chemotherapeutic agent doxorubicin results in an additive anti-proliferative, but not cytotoxic effect.We conclude that targeting glutamine uptake might constitute a potential interesting strategy for triple-negative breast cancer.
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Affiliation(s)
- F Carmo
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - C Silva
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
| | - F Martel
- Unit of Biochemistry, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S), University of Porto, Porto, Portugal
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5
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De Luca F, Di Chio C, Zappalà M, Ettari R. Dihydrochalcones as antitumor agents. Curr Med Chem 2022; 29:5042-5061. [PMID: 35430969 DOI: 10.2174/0929867329666220415113219] [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: 08/05/2021] [Revised: 01/16/2022] [Accepted: 01/25/2022] [Indexed: 11/22/2022]
Abstract
Dihydrochalcones are a class of secondary metabolites, possessing several biological properties such as antitumor, antioxidant, antibacterial, antidiabetic, estrogenic, anti-inflammatory, antithrombotic, antiviral, neuroprotective and immunomodulator properties; therefore, they are currently considered promising candidates in the drug discovery process. This review intend to debate their pharmacological actions with a particular attention to their antitumor activity against a panel of cancer cell-lines and to the description of the inhibition mechanisms of cell proliferation such as the regulation of angiogenesis, apoptosis, etc etc.
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Affiliation(s)
- Fabiola De Luca
- Department of Chemical, Biological, Pharmaceutical and Environmental Chemistry, University of Messina, Italy
| | - Carla Di Chio
- Department of Chemical, Biological, Pharmaceutical and Environmental Chemistry, University of Messina, Italy
| | - Maria Zappalà
- Department of Chemical, Biological, Pharmaceutical and Environmental Chemistry, University of Messina, Italy
| | - Roberta Ettari
- Department of Chemical, Biological, Pharmaceutical and Environmental Chemistry, University of Messina, Italy
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6
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Nowak B, Matuszewska A, Popłoński J, Nikodem A, Filipiak J, Tomanik M, Dziewiszek W, Danielewski M, Belowska-Bień K, Kłobucki M, Sordon S, Jędrzejuk D, Ceremuga I, Trocha M, Sozański T, Piasecki T, Bolanowski M, Huszcza E, Szeląg A. Prenylflavonoids counteract ovariectomy-induced disturbances in rats. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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7
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Tronina T, Mrozowska M, Bartmańska A, Popłoński J, Sordon S, Huszcza E. Simple and Rapid Method for Wogonin Preparation and Its Biotransformation. Int J Mol Sci 2021; 22:ijms22168973. [PMID: 34445678 PMCID: PMC8396506 DOI: 10.3390/ijms22168973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 11/16/2022] Open
Abstract
Wogonin is one of the most active flavonoids from Scutellaria baicalensis Georgi (baikal skullcap), widely used in traditional Chinese medicine. It exhibits a broad spectrum of health-promoting and therapeutic activities. Together with baicalein, it is considered to be the one of main active ingredients of Chinese medicines for the management of COVID-19. However, therapeutic use of wogonin may be limited due to low market availability connected with its low content in baikal skullcap and lack of efficient preparative methods for obtaining this compound. Although the amount of wogonin in skullcap root often does not exceed 0.5%, this material is rich in wogonin glucuronide, which may be used as a substrate for wogonin production. In the present study, a rapid, simple, cheap and effective method of wogonin and baicalein preparation, which provides gram quantities of both flavonoids, is proposed. The obtained wogonin was used as a substrate for biotransformation. Thirty-six microorganisms were tested in screening studies. The most efficient were used in enlarged scale transformations to determine metabolism of this xenobiotic. The major phase I metabolism product was 4′-hydroxywogonin—a rare flavonoid which exhibits anticancer activity—whereas phase II metabolism products were glucosides of wogonin. The present studies complement and extend the knowledge on the effect of substitution of A- and B-ring on the regioselective glycosylation of flavonoids catalyzed by microorganisms.
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Affiliation(s)
- Tomasz Tronina
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland; (A.B.); (J.P.); (S.S.); (E.H.)
- Correspondence: ; Tel.: +48-71320-5019
| | - Monika Mrozowska
- Department of Histology and Embryology, Wroclaw Medical University, T. Chałubinskiego 6a, 50-368 Wroclaw, Poland;
| | - Agnieszka Bartmańska
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland; (A.B.); (J.P.); (S.S.); (E.H.)
| | - Jarosław Popłoński
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland; (A.B.); (J.P.); (S.S.); (E.H.)
| | - Sandra Sordon
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland; (A.B.); (J.P.); (S.S.); (E.H.)
| | - Ewa Huszcza
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland; (A.B.); (J.P.); (S.S.); (E.H.)
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8
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Xiao Y, Han F, Kim MJ, Lee KY, Lee IS. Microbial Transformation of Broussochalcones A and B by Aspergillus niger. JOURNAL OF NATURAL PRODUCTS 2021; 84:601-607. [PMID: 33527835 DOI: 10.1021/acs.jnatprod.0c01102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Broussochalcones A (BCA, 1) and B (BCB, 2) are major bioactive constituents isolated from Broussonetia papyrifera, a polyphenol-rich plant belonging to the family Moraceae. Due to their low yields from natural sources, BCA (1) and BCB (2) were prepared synthetically by employing Claisen-Schmidt condensation, and these were used as substrates for microbial transformation to obtain novel derivatives. Microbial transformation of BCA (1) and BCB (2) with the endophytic fungus Aspergillus niger KCCM 60332 yielded 10 previously undescribed chalcones (1a-1e and 2a-2e). Their structures were established based on the spectroscopic methods. The cytotoxicity of BCA (1), BCB (2), and their metabolites (1a-1e and 2a-2e) was determined by human cancer cell lines A375P, A549, HT-29, MCF-7, and HepG2, with 1e shown to be most cytotoxic.
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Affiliation(s)
- Yina Xiao
- College of Pharmacy, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Fubo Han
- College of Pharmacy, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Myeong Ji Kim
- College of Pharmacy, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Kwang Youl Lee
- College of Pharmacy, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ik-Soo Lee
- College of Pharmacy, Chonnam National University, Gwangju 61186, Republic of Korea
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9
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Cano-Flores A, Espinoza M, Delgado G. Bio- and chemo- transformations of glabranin and 7- O-methylglabranin and cytotoxic evaluations of the transformed products. Nat Prod Res 2020; 36:3404-3412. [PMID: 33356563 DOI: 10.1080/14786419.2020.1862835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The biotransformation of glabranin (1) with Aspergillus niger and Cunninghamella blakesleeana favoured the formation of benzofuran derivatives (3 and 4), while in contrast, its acid-catalysed chemical transformation favoured the formation of benzopyran derivatives (6 and 7). Compound 6 was further biooxidised at C-4'. Biotransformation of 7-O-methylglabranin (2) proceeded via oxidation of the prenyl group and C-4' by the same fungi, and the obtention of 11 mimics the biosynthesis of this last compound. Some compounds displayed moderate antiproliferative activity against selected human cancer cell lines, with glabranin being the most active, suggesting that the prenyl group and the phenol at C-7 are important structural determinants for cytotoxicity.
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Affiliation(s)
- Arturo Cano-Flores
- Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México, México
| | - Marina Espinoza
- Facultad de Estudios Superiores Zaragoza, UNAM, Ciudad de México, México
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10
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Shiwakoti S, Adhikari D, Lee JP, Kang KW, Lee IS, Kim HJ, Oak MH. Prevention of Fine Dust-Induced Vascular Senescence by Humulus lupulus Extract and Its Major Bioactive Compounds. Antioxidants (Basel) 2020; 9:E1243. [PMID: 33297587 PMCID: PMC7762380 DOI: 10.3390/antiox9121243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 12/23/2022] Open
Abstract
Both short- and long-term exposure to fine dust (FD) from air pollution has been linked to various cardiovascular diseases (CVDs). Endothelial cell (EC) senescence is an important risk factor for CVDs, and recent evidence suggests that FD-induced premature EC senescence increases oxidative stress levels. Hop plant (Humulus lupulus) is a very rich source of polyphenols known to have nutritional and therapeutic properties, including antioxidant behavior. The aims of this study were to evaluate whether Humulus lupulus extract prevents FD-induced vascular senescence and dysfunction and, if so, to characterize the underlying mechanisms and active components. Porcine coronary arteries and endothelial cells were treated with FD in the presence or absence of hop extract (HOP), and the senescence-associated-beta galactosidase (SA-β-gal) activity, cell-cycle progression, expression of senescence markers, oxidative stress level, and vascular function were evaluated. Results indicated that HOP inhibited FD-induced SA-β-gal activity, cell-cycle arrest, and oxidative stress, suggesting that HOP prevents premature induction of senescence by FD. HOP also ameliorated FD-induced vascular dysfunction. Additionally, xanthohumol (XN) and isoxanthohumol (IX) were found to produce the protective effects of HOP. Treatment with HOP and its primary active components XN and IX downregulated the expression of p22phox, p53, and angiotensin type 1 receptor, which all are known FD-induced redox-sensitive EC senescence inducers. Taken together, HOP and its active components protect against FD-induced endothelial senescence most likely via antioxidant activity and may be a potential therapeutic agent for preventing and/or treating air-pollution-associated CVDs.
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Affiliation(s)
- Saugat Shiwakoti
- College of Pharmacy, Mokpo National University, Jeonnam, Muan-gun 58554, Korea; (S.S.); (D.A.); (J.P.L.)
| | - Deepak Adhikari
- College of Pharmacy, Mokpo National University, Jeonnam, Muan-gun 58554, Korea; (S.S.); (D.A.); (J.P.L.)
| | - Jeong Pyo Lee
- College of Pharmacy, Mokpo National University, Jeonnam, Muan-gun 58554, Korea; (S.S.); (D.A.); (J.P.L.)
| | - Ki-Woon Kang
- Division of Cardiology, Eulji University Hospital, Eulji University School of Medicine, Daejeon 34824, Korea;
| | - Ik-Soo Lee
- College of Pharmacy, Chonnam National University, Gwangju 61186, Korea;
| | - Hyun Jung Kim
- College of Pharmacy, Mokpo National University, Jeonnam, Muan-gun 58554, Korea; (S.S.); (D.A.); (J.P.L.)
| | - Min-Ho Oak
- College of Pharmacy, Mokpo National University, Jeonnam, Muan-gun 58554, Korea; (S.S.); (D.A.); (J.P.L.)
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11
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Cardoso HJ, Carvalho TMA, Fonseca LRS, Figueira MI, Vaz CV, Socorro S. Revisiting prostate cancer metabolism: From metabolites to disease and therapy. Med Res Rev 2020; 41:1499-1538. [PMID: 33274768 DOI: 10.1002/med.21766] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/24/2020] [Accepted: 11/22/2020] [Indexed: 12/24/2022]
Abstract
Prostate cancer (PCa), one of the most commonly diagnosed cancers worldwide, still presents important unmet clinical needs concerning treatment. In the last years, the metabolic reprogramming and the specificities of tumor cells emerged as an exciting field for cancer therapy. The unique features of PCa cells metabolism, and the activation of specific metabolic pathways, propelled the use of metabolic inhibitors for treatment. The present work revises the knowledge of PCa metabolism and the metabolic alterations that underlie the development and progression of the disease. A focus is given to the role of bioenergetic sources, namely, glucose, lipids, and glutamine sustaining PCa cell survival and growth. Moreover, it is described as the action of oncogenes/tumor suppressors and sex steroid hormones in the metabolic reprogramming of PCa. Finally, the status of PCa treatment based on the inhibition of metabolic pathways is presented. Globally, this review updates the landscape of PCa metabolism, highlighting the critical metabolic alterations that could have a clinical and therapeutic interest.
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Affiliation(s)
- Henrique J Cardoso
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Tiago M A Carvalho
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Lara R S Fonseca
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Marília I Figueira
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Cátia V Vaz
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
| | - Sílvia Socorro
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, Covilhã, Portugal
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12
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Cano-Flores A, Gómez J, S. Escalona-Torres I, Velasco-Bejarano B. Microorganisms as Biocatalysts and Enzyme Sources. Microorganisms 2020. [DOI: 10.5772/intechopen.90338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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13
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Li M, Gao F, Yu X, Zhao Q, Zhou L, Liu W, Li W. Promotion of ubiquitination-dependent survivin destruction contributes to xanthohumol-mediated tumor suppression and overcomes radioresistance in human oral squamous cell carcinoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2020; 39:88. [PMID: 32410646 PMCID: PMC7227341 DOI: 10.1186/s13046-020-01593-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/08/2020] [Indexed: 02/07/2023]
Abstract
Background Overexpression of survivin plays a crucial role in tumorigenesis and correlates with poor prognosis in human malignancies. Thus, survivin has been proposed as an attractive target for new anti-tumor interventions. Methods A natural product library was used for natural compound screening through MTS assay. The expression of survivin in oral squamous cell carcinoma (OSCC) and the inhibitory effect of xanthohumol (XN) on OSCC were examined by anchorage-dependent and -independent growth assays, immunoblot, immunofluorescence, immunohistochemical staining, ubiquitination analysis, co-immunoprecipitation assay, CRISPR-Cas9-based gene knockout, and xenograft experiment. Results Survivin is highly expressed in OSCC patient-derived tissues and cell lines. Knockout of survivin reduced the tumorigenic properties of OSCC cells in vitro and in vivo. With a natural compound screening, we identified that xanthohumol inhibited OSCC cells by reducing survivin protein level and activating mitochondrial apoptotic signaling. Xanthohumol inhibited the Akt-Wee1-CDK1 signaling, which in turn decreased survivin phosphorylation on Thr34, and facilitated E3 ligase Fbxl7-mediated survivin ubiquitination and degradation. Xanthohumol alone or in combination with radiation overcame radioresistance in OSCC xenograft tumors. Conclusion Our findings indicate that targeting survivin for degradation might a promising strategy for OSCC treatment.
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Affiliation(s)
- Ming Li
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, People's Republic of China.,Changsha Stomatological Hospital, Changsha, Hunan, 410004, People's Republic of China.,School of Stomatology, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, People's Republic of China.,Xiangya Stomatological Hospital & School of Stomatology, Central South University, Changsha, Hunan, 410000, People's Republic of China
| | - Feng Gao
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, People's Republic of China.,Department of Ultrasonography, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Xinfang Yu
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, People's Republic of China
| | - Qing Zhao
- Changsha Stomatological Hospital, Changsha, Hunan, 410004, People's Republic of China.,School of Stomatology, Hunan University of Chinese Medicine, Changsha, Hunan, 410208, People's Republic of China
| | - Li Zhou
- Department of Pathology, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Wenbin Liu
- Department of Pathology, Hunan Cancer Hospital, Changsha, Hunan, 410013, People's Republic of China
| | - Wei Li
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, Hunan, 410013, People's Republic of China. .,Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, Hunan, 410013, People's Republic of China.
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14
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Stompor M, Broda D, Bajek-Bil A. Dihydrochalcones: Methods of Acquisition and Pharmacological Properties-A First Systematic Review. Molecules 2019; 24:molecules24244468. [PMID: 31817526 PMCID: PMC6943545 DOI: 10.3390/molecules24244468] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 12/18/2022] Open
Abstract
Dihydrochalcones are a class of secondary metabolites, for which demand in biological and pharmacological applications is still growing. They posses several health-endorsing properties and, therefore, are promising candidates for further research and development. However, low content of dihydrochalcones in plants along with their low solubility and bioavailability restrict the development of these compounds as clinical therapeutics. Therefore, chemomicrobial and enzymatic modifications are required to expand their application. This review aims at analyzing and summarizing the methods of obtaining dihydrochalcones and of presenting their pharmacological actions that have been described in the literature to support potential future development of this group of compounds as novel therapeutic drugs. We have also performed an evaluation of the available literature on beneficial effects of dihydrochalcones with potent antioxidant activity and multifactorial pharmacological effects, including antidiabetic, antitumor, lipometabolism regulating, antioxidant, anti-inflammatory, antibacterial, antiviral, and immunomodulatory ones. In addition, we provide useful information on their properties, sources, and usefulness in medicinal chemistry.
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Affiliation(s)
- Monika Stompor
- Institute of Medical Sciences, University of Rzeszów, 35-959 Rzeszów, Poland
- Correspondence:
| | - Daniel Broda
- Department of Biotechnology, Institute of Biology and Biotechnology, University of Rzeszów, 35-959 Rzeszów, Poland;
| | - Agata Bajek-Bil
- Faculty of Chemistry, Rzeszow University of Technology, 35-959 Rzeszów, Poland;
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15
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Xanthohumol, a Prenylated Flavonoid from Hops, Induces Caspase-Dependent Degradation of Oncoprotein BCR-ABL in K562 Cells. Antioxidants (Basel) 2019; 8:antiox8090402. [PMID: 31527518 PMCID: PMC6769755 DOI: 10.3390/antiox8090402] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 09/10/2019] [Accepted: 09/13/2019] [Indexed: 12/11/2022] Open
Abstract
BCR-ABL oncoprotein drives the initiation, promotion, and progression of chronic myelogenous leukemia (CML). Tyrosine kinase inhibitors are the first choice for CML therapy, however, BCR-ABL mediated drug resistance limits its clinical application and prognosis. A novel promising therapeutic strategy for CML therapy is to degrade BCR-ABL using small molecules. Antioxidant xanthohumol (XN) is a hop-derived prenylated flavonoid with multiple bioactivities. In this study, we showed XN could inhibit the proliferation, induce S phase cell cycle arrest, and stimulate apoptosis in K562 cells. XN degraded BCR-ABL in a concentration- and time-dependent manner, and the involved degradation pathway was caspase activation, while not autophagy induction or ubiquitin proteasome system (UPS) activation. Moreover, we revealed for the first time that XN could inhibit the UPS and autophagy in K562 cells, and the inhibitory effect of XN on autophagy could attenuate imatinib-induced autophagy and enhance the therapeutic efficiency of imatinib in K562 cells. Our present findings identified XN act as a degrader of BCR-ABL in K562 cells, and XN had potential to be developed as an alternate agent for CML therapy.
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16
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Krajnović T, Drača D, Kaluđerović GN, Dunđerović D, Mirkov I, Wessjohann LA, Maksimović-Ivanić D, Mijatović S. The hop-derived prenylflavonoid isoxanthohumol inhibits the formation of lung metastasis in B16-F10 murine melanoma model. Food Chem Toxicol 2019; 129:257-268. [PMID: 31034931 DOI: 10.1016/j.fct.2019.04.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 04/13/2019] [Accepted: 04/25/2019] [Indexed: 12/22/2022]
Abstract
Isoxanthohumol (IXN), a prenylflavonoid from hops and beer, gained increasing attention as a potential chemopreventive agent. In the present study, IXN antimetastatic potential in vitro against the highly invasive melanoma cell line B16-F10 and in vivo in a murine metastatic model was investigated. Melanoma cell viability was diminished in a dose-dependent manner following the treatment with IXN. This decrease was a consequence of autophagy and caspase-dependent apoptosis. Additionally, the dividing potential of highly proliferative melanoma cells was dramatically affected by this isoflavanone, which was in correlation with an abrogated cell colony forming potential, indicating changes in their metastatic features. Concordantly, IXN promoted strong suppression of the processes that define metastasis- cell adhesion, invasion, and migration. Further investigation at the molecular level revealed that the abolished metastatic potential of a melanoma subclone was due to disrupted integrin signaling. Importantly, these results were reaffirmed in vivo where IXN inhibited the development of lung metastatic foci in tumor-challenged animals. The results of the present study may highlight the beneficial effects of IXN on melanoma as the most aggressive type of skin cancer and will hopefully shed a light on the possible use of this prenylflavonoid in the treatment of metastatic malignancies.
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Affiliation(s)
- Tamara Krajnović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia.
| | - Dijana Drača
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia.
| | - Goran N Kaluđerović
- Department of Bioorganic Chemistry, Leibniz-Institute of Plant Biochemistry, Weinberg 3, D 06120, Halle (Saale), Germany.
| | - Duško Dunđerović
- Institute of Pathology, School of Medicine, University of Belgrade, dr Subotića 1, 11000, Belgrade, Serbia.
| | - Ivana Mirkov
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia.
| | - Ludger A Wessjohann
- Department of Bioorganic Chemistry, Leibniz-Institute of Plant Biochemistry, Weinberg 3, D 06120, Halle (Saale), Germany.
| | - Danijela Maksimović-Ivanić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia.
| | - Sanja Mijatović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia.
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17
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Logan IE, Miranda CL, Lowry MB, Maier CS, Stevens JF, Gombart AF. Antiproliferative and Cytotoxic Activity of Xanthohumol and Its Non-Estrogenic Derivatives in Colon and Hepatocellular Carcinoma Cell Lines. Int J Mol Sci 2019; 20:ijms20051203. [PMID: 30857300 PMCID: PMC6429097 DOI: 10.3390/ijms20051203] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 02/28/2019] [Accepted: 03/05/2019] [Indexed: 11/16/2022] Open
Abstract
Xanthohumol (XN), a prenylated flavonoid found in hops, inhibits growth in a variety of cancer cell lines; however, its use raises concerns as gut microbiota and the host’s hepatic cytochrome P450 enzymes metabolize it into the most potent phytoestrogen known, 8-prenylnaringenin (8-PN). The XN derivatives dihydroxanthohumol (DXN) and tetrahydroxanthohumol (TXN) are not metabolized into 8-PN and they show higher tissue concentrations in vivo compared with XN when orally administered to mice at the same dose. Here we show that DXN and TXN possess improved anti-proliferative activity compared with XN in two colon (HCT116, HT29) and two hepatocellular (HepG2, Huh7) carcinoma cell lines, as indicated by their respective IC50 values. Furthermore, XN, DXN, and TXN induce extensive apoptosis in all these carcinoma cell lines. Finally, TXN induces G0/G1 cell cycle arrest in the colon carcinoma cell line HT29. Our findings suggest that DXN and TXN could show promise as therapeutic agents against colorectal and liver cancer in preclinical studies without the drawback of metabolism into a phytoestrogen.
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Affiliation(s)
- Isabelle E Logan
- Department of Biochemistry and Biophysics, Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA.
| | - Cristobal L Miranda
- Department of Pharmaceutical Sciences, Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA.
| | - Malcolm B Lowry
- Department of Microbiology, Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA.
| | - Claudia S Maier
- Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA.
| | - Jan F Stevens
- Department of Pharmaceutical Sciences, Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA.
| | - Adrian F Gombart
- Linus Pauling Institute, Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR 97331, USA.
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18
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Alsayari A, Muhsinah AB, Hassan MZ, Ahsan MJ, Alshehri JA, Begum N. Aurone: A biologically attractive scaffold as anticancer agent. Eur J Med Chem 2019; 166:417-431. [PMID: 30739824 DOI: 10.1016/j.ejmech.2019.01.078] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/28/2019] [Accepted: 01/29/2019] [Indexed: 12/11/2022]
Abstract
Aurones are very simple, promising anticancer lead molecules containing three rings (A, B and C). A very slight structural variation in the aurones elicits diverse affinity and specificity towards different molecular targets. The present review discusses the design, discovery and development of natural and synthetic aurones as small molecule anticancer agents. Detailed structure-activity relationship and intermolecular interactions at different targets are also discussed. Due to their rare occurrence in nature and minimal mention in literature, the anticancer potential of aurones is rather recent but in constant progress.
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Affiliation(s)
| | | | | | | | | | - Naseem Begum
- College of Applied Medical Sciences, King Khalid University, Abha, 62529, Saudi Arabia
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19
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Paraiso IL, Plagmann LS, Yang L, Zielke R, Gombart AF, Maier CS, Sikora AE, Blakemore PR, Stevens JF. Reductive Metabolism of Xanthohumol and 8-Prenylnaringenin by the Intestinal Bacterium Eubacterium ramulus. Mol Nutr Food Res 2018; 63:e1800923. [PMID: 30471194 DOI: 10.1002/mnfr.201800923] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 11/14/2018] [Indexed: 12/16/2022]
Abstract
SCOPE The intestinal microbiota transforms a wide range of available substrates, including polyphenols. Microbial catabolites of polyphenols can contribute in significant ways to the health-promoting properties of their parent polyphenols. This work aims to identify intestinal metabolites of xanthohumol (XN), a prenylated flavonoid found in hops (Humulus lupulus) and beer, as well as to identify pathways of metabolism of XN in the gut. METHODS AND RESULTS To investigate intestinal metabolism, XN and related prenylated flavonoids, isoxanthohumol (IX), and 8-prenylnaringenin (8PN) were added to growing cultures of intestinal bacteria, Eubacterium ramulus and E. limosum. Liquid chromatography coupled with mass spectrometry was used to identify metabolites of the flavonoids from the cultures. The metabolic capacity of E. limosum appears to be limited to O-demethylation. Evidence from the study indicates that E. ramulus hydrogenates XN to form α,β-dihydroxanthohumol (DXN) and metabolizes the potent phytoestrogen 8PN into the chalcones, O-desmethylxanthohumol (DMX) and O-desmethyl-α,β-dihydroxanthohumol (DDXN). CONCLUSION Microbial metabolism is likely to affect both activity and toxicity of XN and derivatives. This study along with others highlights that attention should be focused on metabolites, in particular, products of intestinal microbial metabolism.
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Affiliation(s)
- Ines L Paraiso
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, 97331, USA.,Linus Pauling Institute, Oregon State University, Corvallis, OR, 97331, USA
| | - Layhna S Plagmann
- Linus Pauling Institute, Oregon State University, Corvallis, OR, 97331, USA.,Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - Liping Yang
- Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - Ryszard Zielke
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, 97331, USA
| | - Adrian F Gombart
- Linus Pauling Institute, Oregon State University, Corvallis, OR, 97331, USA.,Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, 97331, USA
| | - Claudia S Maier
- Linus Pauling Institute, Oregon State University, Corvallis, OR, 97331, USA.,Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - Aleksandra E Sikora
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, 97331, USA.,Vaccine and Gene Therapy Institute, Oregon Health and Science University, Beaverton, OR, 97006, USA
| | - Paul R Blakemore
- Linus Pauling Institute, Oregon State University, Corvallis, OR, 97331, USA.,Department of Chemistry, Oregon State University, Corvallis, OR, 97331, USA
| | - Jan F Stevens
- Department of Pharmaceutical Sciences, Oregon State University, Corvallis, OR, 97331, USA.,Linus Pauling Institute, Oregon State University, Corvallis, OR, 97331, USA
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20
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Bartmańska A, Tronina T, Popłoński J, Milczarek M, Filip-Psurska B, Wietrzyk J. Highly Cancer Selective Antiproliferative Activity of Natural Prenylated Flavonoids. Molecules 2018; 23:molecules23112922. [PMID: 30423918 PMCID: PMC6278664 DOI: 10.3390/molecules23112922] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/31/2018] [Accepted: 11/08/2018] [Indexed: 02/05/2023] Open
Abstract
Xanthohumol (XN) and four minor hops prenylflavonoids: α,β-dihydroxanthohumol (2HXN), isoxanthohumol (IXN), 8-prenylnaringenin (8PN), and 6-prenylnaringenin (6PN), were tested for antiproliferative activity towards human cancer and normal cell lines. Nonprenylated naringenin (NG) was used as a model compound. Xanthohumol, α,β-dihydroxanthohumol and 6-prenylnaringenin were the most active compounds. Xanthohumol exhibited higher antiproliferative activity than cisplatin (CP) against five cancer cell lines: ovarian resistant to cisplatin A2780cis, breast MDA-MB-231 and T-47D, prostate PC-3, and colon HT-29. Isoxanthohumol was more potent than cisplatin against breast cancer cell lines MDA-MB-231 and T-47D whereas 6-prenylnaringenin was stronger than cisplatin against breast cancer cell line T-47D. It was found that tested chalcones possessed highly selective antiproliferative activity towards all tested breast cancer lines compared to the normal breast MCF 10A cell line (the calculated selectivity index ranged from 5 to 10). Low antiproliferative activity of naringenin indicates the importance of the prenyl group with respect to antiproliferative activity.
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Affiliation(s)
- Agnieszka Bartmańska
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland.
| | - Tomasz Tronina
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland.
| | - Jarosław Popłoński
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland.
| | - Magdalena Milczarek
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland.
| | - Beata Filip-Psurska
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland.
| | - Joanna Wietrzyk
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland.
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21
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Mijatović S, Bramanti A, Nicoletti F, Fagone P, Kaluđerović GN, Maksimović-Ivanić D. Naturally occurring compounds in differentiation based therapy of cancer. Biotechnol Adv 2018; 36:1622-1632. [DOI: 10.1016/j.biotechadv.2018.04.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 03/22/2018] [Accepted: 04/10/2018] [Indexed: 12/22/2022]
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22
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Bartmańska A, Wałecka-Zacharska E, Tronina T, Popłoński J, Sordon S, Brzezowska E, Bania J, Huszcza E. Antimicrobial Properties of Spent Hops Extracts, Flavonoids Isolated Therefrom, and Their Derivatives. Molecules 2018; 23:E2059. [PMID: 30126093 PMCID: PMC6222488 DOI: 10.3390/molecules23082059] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 08/13/2018] [Accepted: 08/15/2018] [Indexed: 12/18/2022] Open
Abstract
Hop cones preparations possess a wide range of biological activities including antimicrobial properties. In this work, we evaluated the effect of various organic extracts obtained from spent hops, as well as six hops flavonoids and their twenty natural and synthetic derivatives on human and plant microbial pathogens. Methylene chloride, acetone, ethyl acetate, and methanol were used as extractants. Seven flavonoids, among them two natural (α,β-dihydroxanthohumol and 8-prenylnaringenin) showed significant activity against methicillin sensitive and resistant Staphylococcus aureus and Staphylococcus epidermidis strains with the lowest MIC80 value of 0.5 µg/mL. The crude ethyl acetate, acetone, and methanol extracts from the spent hops exhibited antifungal activity against Fusarium oxysporum, F. culmorum, and F. semitectum with the lowest MIC50 of 0.5 mg/mL, while the methylene chloride extract exerted antifungal activity against Botrytis cinerea with the MIC50 of 1 mg/mL. The preparation obtained after the removal of xanthohumol from the spent hops crude extracts retained up to 95% of activity. These findings suggest that various spent hops extracts may be effective agents for the control of plant pathogens of economic importance, like Botrytis cinerea and Fusarium oxysporum, while some compounds from spent hops or their derivatives may become useful for staphylococcal infections.
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Affiliation(s)
- Agnieszka Bartmańska
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Ewa Wałecka-Zacharska
- Department of Food Hygiene and Consumer Health Protection, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Tomasz Tronina
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Jarosław Popłoński
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Sandra Sordon
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Ewa Brzezowska
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Jacek Bania
- Department of Food Hygiene and Consumer Health Protection, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Ewa Huszcza
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
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23
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Engleder M, Pichler H. On the current role of hydratases in biocatalysis. Appl Microbiol Biotechnol 2018; 102:5841-5858. [PMID: 29785499 PMCID: PMC6013536 DOI: 10.1007/s00253-018-9065-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 04/27/2018] [Accepted: 04/27/2018] [Indexed: 11/06/2022]
Abstract
Water addition to carbon-carbon double bonds provides access to value-added products from inexpensive organic feedstock. This interesting but relatively little-studied reaction is catalysed by hydratases in a highly regio- and enantiospecific fashion with excellent atom economy. Considering that asymmetric hydration of (non-activated) carbon-carbon double bonds is virtually impossible with current organic chemistry, enzymatic hydration reactions are highly attractive for industrial applications. Hydratases have been known for several decades but their biocatalytic potential has only been explored over the past 15 years. As a result, a considerable amount of information on this enzyme group has become available, enabling their development for practical applications. This review focuses on hydratases catalysing water addition to non-activated carbon-carbon double bonds, and examines hydratases from a biochemical, structural and mechanistic angle. Current challenges and opportunities in hydration biocatalysis are discussed, and, ultimately, their potential for organic synthesis is highlighted.
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Affiliation(s)
- Matthias Engleder
- Austrian Centre of Industrial Biotechnology (acib), Petersgasse 14, 8010, Graz, Austria
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Petersgasse 8010, Graz, Austria
| | - Harald Pichler
- Austrian Centre of Industrial Biotechnology (acib), Petersgasse 14, 8010, Graz, Austria.
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Petersgasse 8010, Graz, Austria.
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24
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Popłoński J, Turlej E, Sordon S, Tronina T, Bartmańska A, Wietrzyk J, Huszcza E. Synthesis and Antiproliferative Activity of Minor Hops Prenylflavonoids and New Insights on Prenyl Group Cyclization. Molecules 2018; 23:E776. [PMID: 29597299 PMCID: PMC6017146 DOI: 10.3390/molecules23040776] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 03/22/2018] [Accepted: 03/27/2018] [Indexed: 12/22/2022] Open
Abstract
Synthesis of minor prenylflavonoids found in hops and their non-natural derivatives were performed. The antiproliferative activity of the obtained compounds against some human cancer cell lines was investigated. Using xanthohumol isolated from spent hops as a lead compound, a series of minor hop prenylflavonoids and synthetic derivatives were obtained by isomerization, cyclisation, oxidative-cyclisation, oxidation, reduction and demethylation reactions. Three human cancer cell lines-breast (MCF-7), prostate (PC-3) and colon (HT-29)-were used in antiproliferative assays, with cisplatin as a control compound. Five minor hop prenyl flavonoids and nine non-natural derivatives of xanthohumol have been synthetized. Syntheses of xanthohumol K, its dihydro- and tetrahydro-derivatives and 1″,2″,α,β-tetrahydroxanthohumol C were described for the first time. All of the minor hops prenyl flavonoids exhibited strong to moderate antiproliferative activity in vitro. The minor hops flavonoids xanthohumol C and 1″,2″-dihydroxanthohumol K and non-natural 2,3-dehydroisoxanthohumol exhibited the activity comparable to cisplatin. Results described in the article suggest that flavonoids containing chromane- and chromene-like moieties, especially chalcones, are potent antiproliferative agents. The developed new efficient, regioselective cyclisation reaction of the xanthohumol prenyl group to 1″,2″-dihydroxantohumol K may be used in the synthesis of other compounds with the chromane moiety.
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Affiliation(s)
- Jarosław Popłoński
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Eliza Turlej
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland.
| | - Sandra Sordon
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Tomasz Tronina
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Agnieszka Bartmańska
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Joanna Wietrzyk
- Department of Experimental Oncology, Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Weigla 12, 53-114 Wrocław, Poland.
| | - Ewa Huszcza
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
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25
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Engleder M, Horvat M, Emmerstorfer-Augustin A, Wriessnegger T, Gabriel S, Strohmeier G, Weber H, Müller M, Kaluzna I, Mink D, Schürmann M, Pichler H. Recombinant expression, purification and biochemical characterization of kievitone hydratase from Nectria haematococca. PLoS One 2018; 13:e0192653. [PMID: 29420618 PMCID: PMC5805349 DOI: 10.1371/journal.pone.0192653] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 01/26/2018] [Indexed: 01/29/2023] Open
Abstract
Kievitone hydratase catalyzes the addition of water to the double bond of the prenyl moiety of plant isoflavonoid kievitone and, thereby, forms the tertiary alcohol hydroxy-kievitone. In nature, this conversion is associated with a defense mechanism of fungal pathogens against phytoalexins generated by host plants after infection. As of today, a gene sequence coding for kievitone hydratase activity has only been identified and characterized in Fusarium solani f. sp. phaseoli. Here, we report on the identification of a putative kievitone hydratase sequence in Nectria haematococca (NhKHS), the teleomorph state of F. solani, based on in silico sequence analyses. After heterologous expression of the enzyme in the methylotrophic yeast Pichia pastoris, we have confirmed its kievitone hydration activity and have assessed its biochemical properties and substrate specificity. Purified recombinant NhKHS is obviously a homodimeric glycoprotein. Due to its good activity for the readily available chalcone derivative xanthohumol (XN), this compound was selected as a model substrate for biochemical studies. The optimal pH and temperature for hydratase activity were 6.0 and 35°C, respectively, and apparent Vmax and Km values for hydration of XN were 7.16 μmol min-1 mg-1 and 0.98 ± 0.13 mM, respectively. Due to its catalytic properties and apparent substrate promiscuity, NhKHS is a promising enzyme for the biocatalytic production of tertiary alcohols.
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Affiliation(s)
- Matthias Engleder
- acib—Austrian Centre of Industrial Biotechnology, Graz, Austria
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Graz, Austria
| | - Melissa Horvat
- acib—Austrian Centre of Industrial Biotechnology, Graz, Austria
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Graz, Austria
| | | | | | - Stefanie Gabriel
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Graz, Austria
| | - Gernot Strohmeier
- acib—Austrian Centre of Industrial Biotechnology, Graz, Austria
- Institute of Organic Chemistry, Graz University of Technology, NAWI Graz, Graz, Austria
| | - Hansjörg Weber
- Institute of Organic Chemistry, Graz University of Technology, NAWI Graz, Graz, Austria
| | - Monika Müller
- DSM Ahead R&D—Innovative Synthesis, Geleen, The Netherlands
| | - Iwona Kaluzna
- DSM Ahead R&D—Innovative Synthesis, Geleen, The Netherlands
| | - Daniel Mink
- DSM Ahead R&D—Innovative Synthesis, Geleen, The Netherlands
| | | | - Harald Pichler
- acib—Austrian Centre of Industrial Biotechnology, Graz, Austria
- Institute of Molecular Biotechnology, Graz University of Technology, NAWI Graz, BioTechMed Graz, Graz, Austria
- * E-mail:
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26
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Żyszka B, Anioł M, Lipok J. Highly effective, regiospecific reduction of chalcone by cyanobacteria leads to the formation of dihydrochalcone: two steps towards natural sweetness. Microb Cell Fact 2017; 16:136. [PMID: 28778165 PMCID: PMC5545019 DOI: 10.1186/s12934-017-0752-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 07/28/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chalcones are the biogenetic precursors of all known flavonoids, which play an essential role in various metabolic processes in photosynthesizing organisms. The use of whole cyanobacteria cells in a two-step, light-catalysed regioselective bio-reduction of chalcone, leading to the formation of the corresponding dihydrochalcone, is reported. The prokaryotic microalgae cyanobacteria are known to produce phenolic compounds, including flavonoids, as natural components of cells. It seems logical that organisms producing such compounds possess a suitable "enzymatic apparatus" to carry out their biotransformation. Therefore, determination of the ability of whole cells of selected cyanobacteria to carry out biocatalytic transformations of chalcone, the biogenetic precursor of all known flavonoids, was the aim of our study. RESULTS Chalcone was found to be converted to dihydrochalcone by all examined cyanobacterial strains; however, the effectiveness of this process depends on the strain with biotransformation yields ranging from 3% to >99%. The most effective biocatalysts are Anabaena laxa, Aphanizomenon klebahnii, Nodularia moravica, Synechocystis aquatilis (>99% yield) and Merismopedia glauca (92% yield). The strains Anabaena sp. and Chroococcus minutus transformed chalcone in more than one way, forming a few products; however, dihydrochalcone was the dominant product. The course of biotransformation shed light on the pathway of chalcone conversion, indicating that the process proceeds through the intermediate cis-chalcone. The scaled-up process, conducted on a preparative scale and by using a mini-pilot photobioreactor, fully confirmed the high effectiveness of this bioconversion. Moreover, in the case of the mini-pilot photobioreactor batch cultures, the optimization of culturing conditions allowed the shortening of the process conducted by A. klebahnii by 50% (from 8 to 4 days), maintaining its >99% yield. CONCLUSIONS This is the first report related to the use of whole cells of halophilic and freshwater cyanobacteria strains in a two-step, light-catalysed regioselective bio-reduction of chalcone, leading to the formation of the corresponding dihydrochalcone. The total bioconversion of chalcone in analytical, preparative, and mini-pilot scales of this process creates the possibility of its use in the food industry for the production of natural sweeteners.
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Affiliation(s)
- Beata Żyszka
- Department of Analytical and Ecological Chemistry, Faculty of Chemistry, University of Opole, Oleska 48, 45-052, Opole, Poland
| | - Mirosław Anioł
- Department of Chemistry, Faculty of Food Science, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375, Wroclaw, Poland
| | - Jacek Lipok
- Department of Analytical and Ecological Chemistry, Faculty of Chemistry, University of Opole, Oleska 48, 45-052, Opole, Poland.
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The Influence of Glycosylation of Natural and Synthetic Prenylated Flavonoids on Binding to Human Serum Albumin and Inhibition of Cyclooxygenases COX-1 and COX-2. Molecules 2017; 22:molecules22071230. [PMID: 28754033 PMCID: PMC6152009 DOI: 10.3390/molecules22071230] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 11/23/2022] Open
Abstract
The synthesis of different classes of prenylated aglycones (α,β-dihydroxanthohumol (2) and (Z)-6,4’-dihydroxy-4-methoxy-7-prenylaurone (3)) was performed in one step reactions from xanthohumol (1)—major prenylated chalcone naturally occurring in hops. Obtained flavonoids (2–3) and xanthohumol (1) were used as substrates for regioselective fungal glycosylation catalyzed by two Absidia species and Beauveria bassiana. As a result six glycosides (4–9) were formed, of which four glycosides (6–9) have not been published so far. The influence of flavonoid skeleton and the presence of glucopyranose and 4-O-methylglucopyranose moiety in flavonoid molecule on binding to main protein in plasma, human serum albumin (HSA), and inhibition of cyclooxygenases COX-1 and COX-2 were investigated. Results showed that chalcone (1) had the highest binding affinity to HSA (8.624 × 104 M−1) of all tested compounds. It has also exhibited the highest inhibition of cyclooxygenases activity, and it was a two-fold stronger inhibitor than α,β-dihydrochalcone (2) and aurone (3). The presence of sugar moiety in flavonoid molecule caused the loss of HSA binding activity as well as the decrease in inhibition of cyclooxygenases activity.
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28
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Novel 3',5'-diprenylated chalcones inhibited the proliferation of cancer cells in vitro by inducing cell apoptosis and arresting cell cycle phase. Eur J Med Chem 2017; 133:227-239. [PMID: 28390228 DOI: 10.1016/j.ejmech.2017.03.077] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 03/03/2017] [Accepted: 03/30/2017] [Indexed: 12/12/2022]
Abstract
A double Claisen rearrangements synthetic strategy was established for the total synthesis of 4,4'-dimethyl medicagenin (compound 6c). A series of its analogs also were prepared, including two novel 3',5'-diprenylated chalcones, in which ring B was replaced by azaheterocycle. The structures of the twenty-two newly synthesized compounds were confirmed by 1H NMR, 13C NMR and ESI-MS. In vitro, the cytotoxicity of the target compounds was evaluated using cancer cells. Noticeably, compound 10 exhibited broad-spectrum cytotoxicity on PC3 prostate cancer cells, MDA-MB-231 breast cancer cells (MDA), HEL and K562 erythroleukemia cells with IC50 values of 2.92, 3.14, 1.85 and 2.64 μM, respectively. Further studies indicated that compound 10 induced apoptosis and arrested the cell cycle phase of the above mentioned four cancer cell lines. By contrast, compound 6g selectively displayed potent inhibitory activity against the proliferation of HEL cells with an IC50 value of 4.35 μM. Compound 6g slightly induced apoptosis and arrested cell cycle phase of HEL cells. Preliminary structure-activity relationship studies indicated that, in all cancer cell lines evaluated, the 3-pyridinyl group was essential for cytotoxicity.
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Krajnović T, Kaluđerović GN, Wessjohann LA, Mijatović S, Maksimović-Ivanić D. Versatile antitumor potential of isoxanthohumol: Enhancement of paclitaxel activity in vivo. Pharmacol Res 2016; 105:62-73. [PMID: 26784390 DOI: 10.1016/j.phrs.2016.01.011] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 12/18/2015] [Accepted: 01/13/2016] [Indexed: 01/19/2023]
Abstract
Isoxanthohumol (IXN), a prenylated flavonoid from hops, exhibits diverse biological activities, e.g. antitumor, antiinflammatory, antioxidant and antiangiogenic. In this study, the effect of IXN is evaluated on two melanoma cell lines with dissimilar molecular background, B16 and A375. The treatment of both cell lines with IXN resulted in dose-dependent decrease of cell viability. Abolished viability was in correlation with changed morphology and loss of dividing potential indicating phenotypical alteration of both tested cell lines. While modified B16 cells underwent the process of non-classic differentiation followed by tyrosinase activity without enhancement of melanin content, inhibition of Notch 1, β-catenin and Oct-3/4 was observed in A375 cells indicating loss of their pluripotent characteristics. In parallel with this, distinct subpopulations in both cell cultures entered the process of programmed cell death-apoptosis in a caspase independent manner. The described changes in cultures upon exposure to IXN could be connected with the suppression of reactive oxygen (ROS) and nitrogen species (RNS) induced by the drug. Despite the differences in which IXN promoted modifications in the upper part of the PI3K/Akt and MEK-ERK signaling pathways between B16 and A375 cells, p70S6K and its target S6 protein in both types of melanoma cells, after transient activation, became inhibited. In addition to direct input of IXN on cell viability, this study for the first time shows that IXN strongly sensitizes melanoma cells to the treatment with paclitaxel in vivo, in concordance with data obtained in vitro on B16 cells as well as their highly invasive F10 subclone.
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Affiliation(s)
- Tamara Krajnović
- Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia.
| | - Goran N Kaluđerović
- Department of Bioorganic Chemistry, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle (Saale), D 06120 Halle, Germany.
| | - Ludger A Wessjohann
- Department of Bioorganic Chemistry, Leibniz-Institute of Plant Biochemistry, Weinberg 3, Halle (Saale), D 06120 Halle, Germany.
| | - Sanja Mijatović
- Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia.
| | - Danijela Maksimović-Ivanić
- Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia.
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Sławińska-Brych A, Król SK, Dmoszyńska-Graniczka M, Zdzisińska B, Stepulak A, Gagoś M. Xanthohumol inhibits cell cycle progression and proliferation of larynx cancer cells in vitro. Chem Biol Interact 2015; 240:110-8. [PMID: 26297991 DOI: 10.1016/j.cbi.2015.08.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 07/19/2015] [Accepted: 08/11/2015] [Indexed: 12/14/2022]
Abstract
Xanthohumol (XN), a prenylflavonoid derived from the hop plant (Humulus lupulus L.) has been found to exhibit a broad spectrum of biological properties, including anti-cancer activity. In this study, the mechanisms involved in anti-cancer activity of XN in human RK33 and RK45 larynx cancer cell lines were investigated. The effect of XN on the viability of larynx cancer and normal cells (human skin fibroblasts HSF and rat oligodendroglia-derived cells, OLN-93) was compared. Additionally, the influence of XN on proliferation, cell cycle progression, induction of apoptosis in larynx cancer cells, as well as the molecular mechanisms underlying in these processes were analyzed. XN promoted the reduction of cell viability in cancer cells, but showed low cytotoxicity to normal cells. The decrease in cell viability in the cancer cells was coupled with induction of apoptosis via two pathways. The mechanisms involved in these effects of XN were associated with cell growth inhibition by induction of cell cycle arrest in the G1 phase, increased p53 and p21/WAF1 expression levels, downregulation of cyclin D1 and Bcl-2, and activation of caspases-9, -8, and -3. Moreover, this compound inhibited phosphorylation of ERK1/2, suggesting a key role of the ERKs pathway in the XN-mediated growth suppressing effects against the studied cells. These results indicate that XN could be used as a potential agent for the treatment of patients with larynx cancer.
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Affiliation(s)
- Adrianna Sławińska-Brych
- Department of Cell Biology, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland.
| | - Sylwia Katarzyna Król
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Chodźki 1, 20-093 Lublin, Poland
| | | | - Barbara Zdzisińska
- Department of Virology and Immunology, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland
| | - Andrzej Stepulak
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Chodźki 1, 20-093 Lublin, Poland
| | - Mariusz Gagoś
- Department of Cell Biology, Maria Curie-Sklodowska University, Akademicka 19, 20-033 Lublin, Poland
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Correia-Branco A, Azevedo CF, Araújo JR, Guimarães JT, Faria A, Keating E, Martel F. Xanthohumol impairs glucose uptake by a human first-trimester extravillous trophoblast cell line (HTR-8/SVneo cells) and impacts the process of placentation. Mol Hum Reprod 2015; 21:803-15. [DOI: 10.1093/molehr/gav043] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 07/15/2015] [Indexed: 12/31/2022] Open
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Biotransformations and biological activities of hop flavonoids. Biotechnol Adv 2015; 33:1063-90. [PMID: 25708386 DOI: 10.1016/j.biotechadv.2015.02.009] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 02/13/2015] [Accepted: 02/16/2015] [Indexed: 12/13/2022]
Abstract
Female hop cones are used extensively in the brewing industry, but there is now increasing interest in possible uses of hops for non-brewing purposes, especially in the pharmaceutical industry. Among pharmaceutically important compounds from hops are flavonoids, having proven anticarcinogenic, antioxidant, antimicrobial, anti-inflammatory and estrogenic effects. In this review we aim to present current knowledge on the biotransformation of flavonoids from hop cones with respect to products, catalysis and conversion. A list of microbial enzymatic reactions associated with gastrointestinal microbiota is presented. A comparative analysis of the biological activities of hop flavonoids and their biotransformation products is described, indicating where further research has potential for applications in the pharmaceutical industry.
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Isoxanthohumol, a constituent of hop (Humulus lupulus L.), increases stress resistance in Caenorhabditis elegans dependent on the transcription factor DAF-16. Eur J Nutr 2015; 55:257-65. [PMID: 25644181 DOI: 10.1007/s00394-015-0843-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 01/25/2015] [Indexed: 01/27/2023]
Abstract
PURPOSE The flavanone isoxanthohumol (IX) has gained attention as antioxidative and chemopreventive agent, but the molecular mechanism of action remains unclear. We investigated effects of this secondary plant compound in vivo using the model organism Caenorhabditis elegans. METHODS Adult C. elegans nematodes were incubated with IX, and then, the stress resistance was analysed in the SYTOX assay; lifespan was monitored by touch-provoked movement method, the amount of reactive oxygen species (ROS) was measured in the DCF assay, and the nuclear localisation of the transcription factor DAF-16 was analysed by using a transgenic strain. By the use of a DAF-16 loss-of-function strain, we analysed whether the effects are dependent on DAF-16. RESULTS IX increases the resistance of the nematode against thermal stress. Additionally, a reduction in ROS in vivo was caused by IX. Since the flavanone only has a marginal radical-scavenging capacity (TEAC assay), we suggest that IX mediates its antioxidative effects indirectly via activation of DAF-16 (homologue to mammalian FOXO proteins). The nuclear translocation of this transcription factor is increased by IX. In the DAF-16-mutated strain, the IX-mediated increase in stress resistance was completely abolished; furthermore, an increased formation of ROS and a reduced lifespan was mediated by IX. CONCLUSION IX or a bacterial metabolite of IX causes antioxidative effects as well as an increased stress resistance in C. elegans via activation of DAF-16. The homologous pathway may have implications in the molecular mechanism of IX in mammals.
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Pharmacological profile of xanthohumol, a prenylated flavonoid from hops (Humulus lupulus). Molecules 2015; 20:754-79. [PMID: 25574819 PMCID: PMC6272297 DOI: 10.3390/molecules20010754] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 12/30/2014] [Indexed: 11/17/2022] Open
Abstract
The female inflorescences of hops (Humulus lupulus L.), a well-known bittering agent used in the brewing industry, have long been used in traditional medicines. Xanthohumol (XN) is one of the bioactive substances contributing to its medical applications. Among foodstuffs XN is found primarily in beer and its natural occurrence is surveyed. In recent years, XN has received much attention for its biological effects. The present review describes the pharmacological aspects of XN and summarizes the most interesting findings obtained in the preclinical research related to this compound, including the pharmacological activity, the pharmacokinetics, and the safety of XN. Furthermore, the potential use of XN as a food additive considering its many positive biological effects is discussed.
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Cao H, Chen X, Jassbi AR, Xiao J. Microbial biotransformation of bioactive flavonoids. Biotechnol Adv 2015; 33:214-223. [PMID: 25447420 DOI: 10.1016/j.biotechadv.2014.10.012] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 09/21/2014] [Accepted: 10/29/2014] [Indexed: 02/08/2023]
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Tronina T, Bartmańska A, Milczarek M, Wietrzyk J, Popłoński J, Rój E, Huszcza E. Antioxidant and antiproliferative activity of glycosides obtained by biotransformation of xanthohumol. Bioorg Med Chem Lett 2013; 23:1957-60. [DOI: 10.1016/j.bmcl.2013.02.031] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 02/01/2013] [Accepted: 02/07/2013] [Indexed: 11/30/2022]
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