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Wang H, Li H, Liu Z, Zhu Z, Cao Y. Activity of thonningianin A against Candida albicans in vitro and in vivo. Appl Microbiol Biotechnol 2024; 108:96. [PMID: 38212967 PMCID: PMC10784352 DOI: 10.1007/s00253-023-12996-1] [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: 09/06/2023] [Revised: 12/17/2023] [Accepted: 12/26/2023] [Indexed: 01/13/2024]
Abstract
Fungal infections are increasing rapidly, and antifungal agents used in clinics are limited. Therefore, novel antifungal agents with high efficiency are urgently required. In this study, we investigated the antifungal activity of thonningianin A (THA), a natural compound that is widely found in plants. We first determined the activity of THA against Candida albicans, one of the most common fungal pathogens, and found that THA showed antifungal activity against all C. albicans tested, including several fluconazole-resistant isolates. THA also inhibits the growth of non-Candida albicans species. In addition, THA displayed antibiofilm activity and could not only inhibit biofilm formation but also destroy mature biofilms. The in vivo antifungal efficacy of THA was confirmed in a Galleria mellonella infection model. Further studies revealed that THA could enhance intracellular reactive oxygen species (ROS) production and regulate the transcription of several redox-related genes. Specifically, caspase activity and expression of CaMCA1, a caspase-encoding gene in C. albicans, were remarkably increased upon THA treatment. Consistent with this, in the presence of THA, the Camca1 null mutant displayed higher survival rates and reduced caspase activity compared to the wild-type or CaMCA1-reintroduced strains, indicating an important role of CaMCA1 in the antifungal activity of THA. Taken together, our results indicate that THA possesses excellent antifungal activity and may be a promising novel antifungal candidate. KEY POINTS: • THA exhibits activity against Candida species, including fluconazole-resistant isolates • THA inhibits biofilm formation and destroys mature biofilm • Elevated ROS production and CaMCA1-mediated caspase activity are involved in the antifungal mechanisms of THA.
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Affiliation(s)
- Hui Wang
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
| | - Hui Li
- Department of Dermatology, Changhai Hospital, Naval Medical University, Shanghai, 200438, China
| | - ZhiWei Liu
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
| | - ZhenYu Zhu
- School of Pharmacy, Naval Medical University, Shanghai, 200433, China.
| | - YingYing Cao
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China.
- Shanghai Engineering Research Center for Topical Chinese Medicine, Shanghai, 200443, China.
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Yue D, Zheng D, Bai Y, Yang L, Yong J, Li Y. Insights into the anti-Candida albicans properties of natural phytochemicals: An in vitro and in vivo investigation. Phytother Res 2024; 38:2518-2538. [PMID: 38450815 DOI: 10.1002/ptr.8148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/09/2024] [Accepted: 01/19/2024] [Indexed: 03/08/2024]
Abstract
Invasive candidiasis, attributed to Candida albicans, has long been a formidable threat to human health. Despite the advent of effective therapeutics in recent decades, the mortality rate in affected patient populations remains discouraging. This is exacerbated by the emergence of multidrug resistance, significantly limiting the utility of conventional antifungals. Consequently, researchers are compelled to continuously explore novel solutions. Natural phytochemicals present a potential adjunct to the existing arsenal of agents. Previous studies have substantiated the efficacy of phytochemicals against C. albicans. Emerging evidence also underscores the promising application of phytochemicals in the realm of antifungal treatment. This review systematically delineates the inhibitory activity of phytochemicals, both in monotherapy and combination therapy, against C. albicans in both in vivo and in vitro settings. Moreover, it elucidates the mechanisms underpinning the antifungal properties, encompassing (i) cell wall and plasma membrane damage, (ii) inhibition of efflux pumps, (iii) induction of mitochondrial dysfunction, and (iv) inhibition of virulence factors. Subsequently, the review introduces the substantial potential of nanotechnology and photodynamic technology in enhancing the bioavailability of phytochemicals. Lastly, it discusses current limitations and outlines future research priorities, emphasizing the need for high-quality research to comprehensively establish the clinical efficacy and safety of phytochemicals in treating fungal infections. This review aims to inspire further contemplation and recommendations for the effective integration of natural phytochemicals in the development of new medicines for patients afflicted with C. albicans.
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Affiliation(s)
- Daifan Yue
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Dongming Zheng
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuxin Bai
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Linlan Yang
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiangyan Yong
- Department of Clinical Laboratory, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yan Li
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Chen S, Wei B, Fu Y. A Study of the Chemical Composition and Biological Activity of Michelia macclurei Dandy Heartwood: New Sources of Natural Antioxidants, Enzyme Inhibitors and Bacterial Inhibitors. Int J Mol Sci 2023; 24:ijms24097972. [PMID: 37175683 PMCID: PMC10177984 DOI: 10.3390/ijms24097972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/23/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
The wood of Michelia macclurei Dandy (MD) is an excellent material that is widely used in the furniture, handicraft, and construction industries. However, less research has been conducted on the chemical composition and biological activity of heartwood, which is the main valuable part of the wood. This study aimed to investigate the chemical composition and biological activities of the heartwood of Michelia macclurei Dandy (MDHW) and to confirm the active ingredients. Triple quadrupole gas chromatography-mass spectrometry (GC-MS) was used to characterize the volatile components of MDHW, while ultra-performance liquid chromatography-mass spectrometry was used to analyze the non-volatile components (UPLC-MS). The total reducing power, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical, and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging assays, acetylcholinesterase and α-glucosidase inhibition assays, and an antimicrobial test of 4 gram bacteria were used to describe the in vitro bioactivities. The GC-MS analysis showed that the volatile components of MDHW were mainly fatty compounds and terpenoids, with sesquiterpenes and their derivatives dominating the terpene composition. β-elemene was the main terpene component in the steam distillation (11.88%) and ultrasonic extraction (8.2%) methods. A total of 67 compounds, comprising 45 alkaloids, 9 flavonoids, 6 lignans, and others, were found by UPLC-MS analysis. The primary structural kinds of the non-volatile components were 35 isoquinoline alkaloids. Alkaloids were the predominant active constituent in all MDHW extracts, including crude extracts, alkaloid fractions, and non-alkaloid fractions. These extracts all demonstrate some biological effects in terms of antioxidant, enzyme inhibition, and bacterial inhibition. The findings of this study show that MDHW is abundant in chemical structure types, has great bioactivity assessment, and has the potential to be used to create natural antioxidants, products that postpone Alzheimer's disease and lower blood sugar levels and antibacterial agents.
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Affiliation(s)
- Shixiang Chen
- College of Forestry, Guangxi University, Nanning 530004, China
| | - Bochen Wei
- College of Forestry, Guangxi University, Nanning 530004, China
| | - Yunlin Fu
- College of Forestry, Guangxi University, Nanning 530004, China
- Key Laboratory of National Forestry and Grassland Administration on Cultivation of Fast-Growing Timber in Central South China, College of Forestry, Guangxi University, Nanning 530004, China
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do Rosário Esteves Guimarães C, de Freitas HF, Barros TF. Candida albicans antibiofilm molecules: analysis based on inhibition and eradication studies. Braz J Microbiol 2023; 54:37-52. [PMID: 36576671 PMCID: PMC9944165 DOI: 10.1007/s42770-022-00876-1] [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: 09/22/2022] [Accepted: 11/14/2022] [Indexed: 12/29/2022] Open
Abstract
Biofilms are communities of microbial cells surrounded by an extracellular polysaccharide matrix, recognized as a fungal source for local and systemic infections and less susceptible to antifungal drugs. Thus, treatment of biofilm-related Candida spp. infections with popular antifungals such as fluconazole is limited and species-dependent and alternatively demands the use of expensive and high toxic drugs. In this sense, molecules with antibiofilm activity have been studied but without care regarding the use of important criteria such as antibiofilm concentration lower than antifungal concentration when considering the process of inhibition of formation and concentrations equal to or lower than 300 µM. Therefore, this review tries to gather the most promising molecules regarding the activity against the C. albicans biofilm described in the last 10 years, considering the activity of inhibition and eradication. From January 2011 to July 2021, articles were searched on Scopus, PubMed, and Science Direct, combining the keywords "antibiofilm," "candida albicans," "compound," and "molecule" with AND and OR operators. After 3 phases of selection, 21 articles describing 42 molecules were discussed in the review. Most of them were more promising for the inhibition of biofilm formation, with SM21 (24) being an interesting molecule for presenting inhibitory and eradication activity in biofilms with 24 and 48 h, as well as alizarin (26) and chrysazine (27), with concentrations well below the antifungal concentration. Despite the detection of these molecules and the attempts to determine the mechanisms of action by microscopic analysis and gene expression, no specific target has been determined. Thus, a gap is signaled, requiring further studies such as proteomic analyses to clarify it.
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Affiliation(s)
- Carolina do Rosário Esteves Guimarães
- Post-Graduation Program in Pharmacy, Pharmacy College, Federal University of Bahia, Barão de Geremoabo Street, 147, Ondina, Salvador, Bahia CEP, 40170115, Brazil
| | - Humberto Fonseca de Freitas
- Post-Graduation Program in Pharmacy, Pharmacy College, Federal University of Bahia, Barão de Geremoabo Street, 147, Ondina, Salvador, Bahia CEP, 40170115, Brazil
| | - Tânia Fraga Barros
- Post-Graduation Program in Pharmacy, Pharmacy College, Federal University of Bahia, Barão de Geremoabo Street, 147, Ondina, Salvador, Bahia CEP, 40170115, Brazil.
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Khan A, Moni SS, Ali M, Mohan S, Jan H, Rasool S, Kamal MA, Alshahrani S, Halawi M, Alhazmi HA. Antifungal Activity of Plant Secondary Metabolites on Candida albicans: An Updated Review. Curr Mol Pharmacol 2023; 16:15-42. [PMID: 35249516 DOI: 10.2174/1874467215666220304143332] [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: 09/06/2021] [Revised: 11/24/2021] [Accepted: 12/06/2021] [Indexed: 11/22/2022]
Abstract
Fungal infections have been increasing continuously worldwide, especially in immunocompromised individuals. Fungi, regarded as eukaryotic pathogens, have many similarities to the host cells, which inhibit anti-fungal drug development progress. Various fungal model systems have been studied, and it was concluded that Candida spp. is the most common disease-causing fungus. Candida species are well known to cause infections not only in our mouth, skin, and vagina, but they are also a frequent cause of life-threatening hospital bloodstream infections. The morphological and developmental pathways of Candida have been studied extensively, providing insight into the fungus development. Candida albicans is known to be the most pathogenic species responsible for a variety of infections in humans. Conventional anti-fungal drugs, mainly azoles drugs available in the market, have been used for years developing resistance in C. albicans. Hence, the production of new anti-fungal drugs, which require detailed molecular knowledge of fungal pathogenesis, needs to be encouraged. Therefore, this review targets the new approach of "Green Medicines" or the phytochemicals and their secondary metabolites as a source of novel anti-fungal agents to overcome the drug resistance of C. albicans, their mechanism of action, and their combined effects with the available anti-fungal drugs.
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Affiliation(s)
- Andleeb Khan
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan, 45142, Saudi Arabia
| | | | - M Ali
- Department of Pharmacognosy, College of Pharmacy, Jazan University, Jazan, 45142, Saudi Arabia
| | - Syam Mohan
- Substance Abuse and Toxicology Research Center, Jazan University, Jazan, 45142, Saudi Arabia
- School of Health Sciences, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Huma Jan
- Department of Clinical Biochemistry, University of Kashmir, Hazratbal, Srinagar -190006, J&K, India
| | - Saiema Rasool
- Department of School Education, Govt. of Jammu & Kashmir, Srinagar, 190001 J&K, India
| | - Mohammad A Kamal
- Institutes for Systems Genetics, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
- King Fahd Medical Research Center, King Abdulaziz University, P. O. Box 80216, Jeddah 21589. Saudi Arabia
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
- Enzymoics, 7 Peterlee place, Hebersham, NSW 2770; Novel Global Community Educational Foundation, Australia
| | - Saeed Alshahrani
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan, 45142, Saudi Arabia
| | - Maryam Halawi
- Department of Clinical Pharmacy, College of Pharmacy, Jazan University, Jazan, 45142, Saudi Arabia
| | - Hassan A Alhazmi
- Substance Abuse and Toxicology Research Center, Jazan University, Jazan, 45142, Saudi Arabia
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, 45142, Saudi Arabia
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Loaiza-Oliva M, Arias-Durango L, Martínez-Pabón MC. The Cytotoxic and Inhibitory Effects of Plant Derivatives on Candida albicans Biofilms: A Scoping Review. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010130. [PMID: 36615324 PMCID: PMC9822484 DOI: 10.3390/molecules28010130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 12/12/2022] [Accepted: 12/19/2022] [Indexed: 12/29/2022]
Abstract
Candida albicans infections are related to biofilm formation. The increase in antifungal resistance and their adverse effects have led to the search for therapeutic options as plant derivatives. This scoping review aims to identify the current status of in vitro research on the cytotoxicity and inhibitory effects of plant derivatives on C. albicans biofilms. In this study, PRISMA items were followed. After recognition of the inclusion criteria, full texts were read and disagreements were resolved with a third party. A risk of bias assessment was performed, and information was summarized using Microsoft Office Excel. Thirty-nine papers fulfilling the selection criteria were included. The risk of bias analysis identified most of the studies as low risk. Studies evaluated plant derivatives such as extracts, essential oils, terpenes, alkaloids, flavonoids and polyphenols. Some studies evaluated the inhibition of C. albicans biofilm formation, inhibition on preformed biofilms or both. The derivatives at concentrations greater than or equal to those that have an inhibitory effect on C. albicans biofilms, without showing cytotoxicity, include magnoflorin, ellagic acid, myricetin and eucarobustol from Eucalyptus robusta and, as the works in which these derivatives were studied are of good quality, it is desirable to carry out study in other experimental phases, with methodologies that generate comparable information.
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He Z, Yu H, Wu H, Su L, Shi K, Zhao Y, Zong Y, Chen W, Du R. Antidepressant effects of total alkaloids of Fibraurea recisa on improving corticosterone-induced apoptosis of HT-22 cells and chronic unpredictable mild stress-induced depressive-like behaviour in mice. PHARMACEUTICAL BIOLOGY 2022; 60:1436-1448. [PMID: 35938494 PMCID: PMC9361772 DOI: 10.1080/13880209.2022.2099429] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 06/28/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
CONTEXT Fibraurea recisa Pierre. (Menispermaceae) (FR) is a traditional Chinese medicine known as "Huangteng." The total alkaloids of FR (AFR) are the main active ingredients. However, the pharmacological effects of AFR in the treatment of depression have not been reported. OBJECTIVES This study investigates the antidepressant effects of AFR by network pharmacology and verification experiments. MATERIALS AND METHODS Compound-Target-Pathway (C-P-T) network of FR and depression was constructed through network pharmacology. In vitro, HT-22 cells were treated with corticosterone (CORT) solution (0.35 mg/mL), then AFR (0.05 mg/mL) solution and inhibitor AZD6244 (14 μM/mL) or BAY11-7082 (10 μM/mL) were added, respectively. The cell viability was detected by CCK-8. In vivo, C57BL/6 mice were divided into 5 groups, namely the normal group, the CUMS group, the AFR (400 mg/kg) group, and the 2 groups that were simultaneously administered the inhibitory group AZD6244 (8 mg/kg) and BAY11-7082 (5 mg/kg). Western blotting was used to assess the expression level of the proteins. RESULTS AFR could protect HT-22 cells from CORT-induced damage and increase the cell viability from 49.12 ± 3.4% to 87.26 ± 1.5%. Moreover, AFR significantly increased the levels of BDNF (1.3, 1.4-fold), p-ERK (1.4, 1.2-fold) and p-CERB (1.6, 1.3-fold), and decreased the levels of NLRP3 (11.3%, 31.6%), ASC (19.2%, 34.2%) and caspase-1 (18.0%, 27.6%) in HT-22 cells and the hippocampus, respectively. DISCUSSION AND CONCLUSIONS AFR can improve depressive-like behaviours and can develop drugs for depression treatment. Further studies are needed to validate its potential in clinical medicine.
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Affiliation(s)
- Zhongmei He
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - He Yu
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Hong Wu
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Lili Su
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Kun Shi
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Yan Zhao
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Ying Zong
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Weijia Chen
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
| | - Rui Du
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, China
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun, China
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China
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Hao DC, Xu LJ, Zheng YW, Lyu HY, Xiao PG. Mining Therapeutic Efficacy from Treasure Chest of Biodiversity and Chemodiversity: Pharmacophylogeny of Ranunculales Medicinal Plants. Chin J Integr Med 2022; 28:1111-1126. [PMID: 35809180 PMCID: PMC9282152 DOI: 10.1007/s11655-022-3576-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2022] [Indexed: 11/17/2022]
Abstract
Ranunculales, comprising of 7 families that are rich in medicinal species frequently utilized by traditional medicine and ethnomedicine, represents a treasure chest of biodiversity and chemodiversity. The phylogenetically related species often have similar chemical profile, which makes them often possess similar therapeutic spectrum. This has been validated by both ethnomedicinal experiences and pharmacological investigations. This paper summarizes molecular phylogeny, chemical constituents, and therapeutic applications of Ranunculales, i.e., a pharmacophylogeny study of this representative medicinal order. The phytochemistry/metabolome, ethnomedicine and bioactivity/pharmacology data are incorporated within the phylogenetic framework of Ranunculales. The most studied compounds of this order include benzylisoquinoline alkaloid, flavonoid, terpenoid, saponin and lignan, etc. Bisbenzylisoquinoline alkaloids are especially abundant in Berberidaceae and Menispermaceae. The most frequent ethnomedicinal uses are arthritis, heat-clearing and detoxification, carbuncle-abscess and sore-toxin. The most studied bioactivities are anticancer/cytotoxic, antimicrobial, and anti-inflammatory activities, etc. The pharmacophylogeny analysis, integrated with both traditional and modern medicinal uses, agrees with the molecular phylogeny based on chloroplast and nuclear DNA sequences, in which Ranunculales is divided into Ranunculaceae, Berberidaceae, Menispermaceae, Lardizabalaceae, Circaeasteraceae, Papaveraceae, and Eupteleaceae families. Chemical constituents and therapeutic efficacy of each taxonomic group are reviewed and the underlying connection between phylogeny, chemodiversity and clinical uses is revealed, which facilitate the conservation and sustainable utilization of Ranunculales pharmaceutical resources, as well as developing novel plant-based pharmacotherapy.
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Affiliation(s)
- Da-Cheng Hao
- Biotechnology Institute, School of Environment and Chemical Engineering, Dalian Jiaotong University, Dalian, 116028, China
| | - Li-Jia Xu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing, 100193, China
| | - Yu-Wei Zheng
- Biotechnology Institute, School of Environment and Chemical Engineering, Dalian Jiaotong University, Dalian, 116028, China
| | - Huai-Yu Lyu
- Biotechnology Institute, School of Environment and Chemical Engineering, Dalian Jiaotong University, Dalian, 116028, China
| | - Pei-Gen Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing, 100193, China.
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Targeting Virulence Factors of Candida albicans with Natural Products. Foods 2022; 11:foods11192951. [PMID: 36230026 PMCID: PMC9562657 DOI: 10.3390/foods11192951] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/11/2022] [Accepted: 09/16/2022] [Indexed: 11/17/2022] Open
Abstract
Natural products derived from natural resources, including nutritional functional food, play an important role in human health. In recent years, the study of anti-fungal and other properties of agri-foods and derived functional compounds has been a hot research topic. Candida albicans is a parasitic fungus that thrives on human mucosal surfaces, which are colonized through opportunistic infection. It is the most prevalent cause of invasive fungal infection in immunocompromised individuals, resulting in a wide variety of clinical symptoms. Moreover, the efficacy of classical therapeutic medications such as fluconazole is often limited by the development of resistance. There is an ongoing need for the development of novel and effective antifungal therapy and medications. Infection of C. albicans is influenced by a great quantity of virulence factors, like adhesion, invasion-promoting enzymes, mycelial growth, and phenotypic change, and among others. Furthermore, various natural products especially from food sources that target C. albicans virulence factors have been researched, providing promising prospects for C. albicans prevention and treatment. In this review, we discuss the virulence factors of C. albicans and how functional foods and derived functional compounds affect them. Our hope is that this review will stimulate additional thoughts and suggestions regarding nutritional functional food and therapeutic development for patients afflicted with C. albicans.
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Sulaiman M, Jannat K, Nissapatorn V, Rahmatullah M, Paul AK, de Lourdes Pereira M, Rajagopal M, Suleiman M, Butler MS, Break MKB, Weber JF, Wilairatana P, Wiart C. Antibacterial and Antifungal Alkaloids from Asian Angiosperms: Distribution, Mechanisms of Action, Structure-Activity, and Clinical Potentials. Antibiotics (Basel) 2022; 11:1146. [PMID: 36139926 PMCID: PMC9495154 DOI: 10.3390/antibiotics11091146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/06/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
The emergence of multidrug-resistant bacteria and fungi requires the development of antibiotics and antifungal agents. This review identified natural products isolated from Asian angiosperms with antibacterial and/or antifungal activities and analyzed their distribution, molecular weights, solubility, and modes of action. All data in this review were compiled from Google Scholar, PubMed, Science Direct, Web of Science, ChemSpider, PubChem, and a library search from 1979 to 2022. One hundred and forty-one antibacterial and/or antifungal alkaloids were identified during this period, mainly from basal angiosperms. The most active alkaloids are mainly planar, amphiphilic, with a molecular mass between 200 and 400 g/mol, and a polar surface area of about 50 Å2, and target DNA and/or topoisomerase as well as the cytoplasmic membrane. 8-Acetylnorchelerythrine, cryptolepine, 8-hydroxydihydrochelerythrine, 6-methoxydihydrosanguinarine, 2'-nortiliacorinine, pendulamine A and B, rhetsisine, sampangine, tiliacorine, tryptanthrin, tylophorinine, vallesamine, and viroallosecurinine yielded MIC ≤ 1 µg/mL and are candidates for the development of lead molecules.
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Affiliation(s)
- Mazdida Sulaiman
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Khoshnur Jannat
- Department of Biotechnology & Genetic Engineering, University of Development Alternative, Dhaka 1207, Bangladesh
| | - Veeranoot Nissapatorn
- School of Allied Health Sciences and World Union for Herbal Drug Discovery (WUHeDD), Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Mohammed Rahmatullah
- Department of Biotechnology & Genetic Engineering, University of Development Alternative, Dhaka 1207, Bangladesh
| | - Alok K. Paul
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7001, Australia
| | - Maria de Lourdes Pereira
- CICECO-Aveiro Institute of Materials & Department of Medical Sciences, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mogana Rajagopal
- Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur 56000, Malaysia
| | - Monica Suleiman
- Institute for Tropical Biology & Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
| | | | - Mohammed Khaled Bin Break
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail 81411, Saudi Arabia
| | - Jean-Frédéric Weber
- UFR Sciences Pharmaceutiques, INRAE, Bordeaux INP, UR ŒNOLOGIE, EA 4577, USC 1366, ISVV, Université de Bordeaux, 210 Chemin de Leysotte, 33882 Villenave d’Ornon, France
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Christophe Wiart
- Institute for Tropical Biology & Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
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Sun FJ, Li M, Gu L, Wang ML, Yang MH. Recent progress on anti-Candida natural products. Chin J Nat Med 2021; 19:561-579. [PMID: 34419257 DOI: 10.1016/s1875-5364(21)60057-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Indexed: 12/18/2022]
Abstract
Candida is an intractable life-threatening pathogen. Candida infection is extremely difficult to eradicate, and thus is the major cause of morbidity and mortality in immunocompromised individuals. Morevover, the rapid spread of drug-resistant fungi has led to significant decreases in the therapeutic effects of clinical drugs. New anti-Candida agents are urgently needed to solve the complicated medical problem. Natural products with intricate structures have attracted great attention of researchers who make every endeavor to discover leading compounds for antifungal agents. Their novel mechanisms and diverse modes of action expand the variety of fungistatic agents and reduce the emergence of drug resistance. In recent decades, considerable effort has been devoted to finding unique antifungal agents from nature and revealing their unusual mechanisms, which results in important progress on the development of new antifungals, such as the novel cell wall inhibitors YW3548 and SCY-078 which are being tested in clinical trials. This review will present a brief summary on the landscape of anti-Candida natural products within the last decade. We will also discuss in-depth the research progress on diverse natural fungistatic agents along with their novel mechanisms.
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Affiliation(s)
- Fu-Juan Sun
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Min Li
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Liang Gu
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Ming-Ling Wang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Ming-Hua Yang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China.
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12
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Li L, Xin Z, Okwong RO, OuYang Q, Che J, Zhou J, Tao N. Antofine inhibits postharvest green mold due to imazalil-resistant Penicillium digitatum strain Pdw03 by triggering oxidative burst. J Food Biochem 2021; 45:e13751. [PMID: 33949723 DOI: 10.1111/jfbc.13751] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/13/2021] [Accepted: 04/18/2021] [Indexed: 01/05/2023]
Abstract
The emergence of imazalil (IMZ) resistance in Penicillium digitatum has become a great threat for controlling citrus green mold. In this paper, we investigated the antifungal efficiency and mechanism of an alkaloid antofine against an IMZ-resistant P. digitatum strain Pdw03. Results showed that antofine exhibited a strong antifungal activity against the mycelial growth of strain Pdw03, with a minimum inhibitory concentration (MIC) and the minimum fungicidal concentration (MFC) of 1.56 × 10-3 and 1.25 × 10-2 g/L, respectively. In vivo application of antofine effectively delayed the disease progress and reduced the incidence of green mold in citrus fruit. The disease incidence of 10 × MFC antofine-treated fruit after 6 days of storage was only 11% ± 4%, which was significantly lower than that of the control (100% ± 0%). Antofine treatment altered mycelial morphology of strain Pdw03 without affecting the cell wall integrity. Although the ergosterol contents remained stable, a decrease in the total lipid content induced by lipid peroxidation was observed at 30 min of exposure, indicating disruption of cell membrane permeability of strain Pdw03. In addition, the mitochondrial membrane potential (MMP) and adenosine triphosphate (ATP) contents were also decreased at 60 min of exposure. These results indicated that antofine inhibited the growth of strain Pdw03 by disrupting cell membrane permeability and impairing energy metabolism induced by oxidative burst. PRACTICAL APPLICATIONS: One of the most economically important postharvest diseases of citrus fruit is green mold caused by Penicillium digitatum. The pathogen is mainly controlled by using imazalil, but the prolonged and extensive application of this chemical fungicide has led to emergence of numerous IMZ-resistant strains among P. digitatum isolates. Consequently, new and safe strategies for controlling citrus green mold caused by IMZ-resistant P. digitatum strains are urgently needed. In this study, an alkaloid antofine effectively inhibited the growth of IMZ-resistant P. digitatum strain Pdw03 and significantly decreased green mold incidence in the affected citrus fruits. Antofine induced membrane lipid peroxidation of Pdw03 mycelia, resulting in damage to the cell membrane and impairment of energy metabolism. Antofine is therefore a potential antifungal agent for the control of green mold, which provide theoretical guidance for the food industry.
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Affiliation(s)
- Lu Li
- School of Chemical Engineering, Xiangtan University, Xiangtan, China
| | - Zhitong Xin
- School of Chemical Engineering, Xiangtan University, Xiangtan, China
| | | | - Qiuli OuYang
- School of Chemical Engineering, Xiangtan University, Xiangtan, China
| | - Jinxin Che
- School of Chemical Engineering, Xiangtan University, Xiangtan, China
| | - Jia Zhou
- School of Chemical Engineering, Xiangtan University, Xiangtan, China
| | - Nengguo Tao
- School of Chemical Engineering, Xiangtan University, Xiangtan, China
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13
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Zou L, Mei Z, Guan T, Zhang B, Deng Q. Underlying mechanisms of the effect of minocycline against Candida albicans biofilms. Exp Ther Med 2021; 21:413. [PMID: 33747154 PMCID: PMC7967842 DOI: 10.3892/etm.2021.9857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 10/26/2020] [Indexed: 12/14/2022] Open
Abstract
Minocycline (MH) is a broad-spectrum antimicrobial agent and semisynthetic tetracycline derivative, which has been widely used in the clinic due to its efficacy. Having the strongest anti-microbial effect, MH exceeded the traditional scope of antibiotics and its previously unknown antifungal activity is also gradually being discovered. To preliminarily investigate the inhibitory effect of MH on Candida albicans (C. albicans), changes of cell growth, hyphal formation and transition, biofilm production and signaling pathway gene expression of C. albicans in the presence of MH were assessed in the present study. An XTT reduction assay was performed to quantitatively detect the metabolic activity of biofilms and evaluate the inhibition of MH on this. The results suggested that biofilm formation was clearly inhibited by 67% (P<0.0001) in the presence of 250 µg/ml MH, while mature biofilms were not significantly affected. In addition, MH inhibited the transition from yeast to hypha in a dose-dependent manner. Furthermore, reverse transcription-quantitative PCR revealed that several hyphae- and adhesion-specific genes associated with the Ras/cyclic (c)AMP/protein kinase A (PKA) pathway were differentially expressed following MH treatment, including downregulation of ras family GTPase (RAS1), adenylyl cyclase-associated protein 1 (CAP1), thiamin pyrophosphokinase 1 (TPK1), adenylate cyclase (CDC35), transcription factor (TEC1), agglutinin-like protein 3 (ALS3) and hyphal wall protein 1 (HWP1) and upregulation of EFG1 (enhanced filamentous growth protein 1 gene) and PDE2 (high-affinity phosphodiesterase gene). The most obviously changed genes were TPK1, HWP1 and RAS1, downregulated by 0.33-, 0.48- and 0.55-fold, respectively. It was suggested that MH is associated with alterations in the morphology of C. albicans, such as the repression of hypha and biofilm formation of cells, and MH affected the Ras/cAMP pathway to regulate the expression of cAMP-associated genes.
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Affiliation(s)
- Li Zou
- Department of Clinical Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Zhao Mei
- Department of Pharmacy, The People's Hospital of China Three Gorges University, Yichang, Hubei 443000, P.R. China.,Medical College of China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Tao Guan
- Department of Clinical Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Bo Zhang
- Department of Clinical Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei 443000, P.R. China
| | - Qun Deng
- Department of Clinical Laboratory, The People's Hospital of China Three Gorges University, Yichang, Hubei 443000, P.R. China
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14
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Huang X, Liu Y, Ni T, Li L, Yan L, An M, Zhang D, Jiang Y. 11g, a Potent Antifungal Candidate, Enhances Candida albicans Immunogenicity by Unmasking β-Glucan in Fungal Cell Wall. Front Microbiol 2020; 11:1324. [PMID: 32695076 PMCID: PMC7338940 DOI: 10.3389/fmicb.2020.01324] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 05/25/2020] [Indexed: 12/14/2022] Open
Abstract
In the course of optimizing GPI biosynthesis inhibitors, we designed and synthetized a 2-aminonicotinamide derivative named 11g. After evaluating the antifungal activity of compound 11g in vitro, we investigated the influences of 11g on fungi immunogenicity. In addition, we also took advantage of murine systemic candidiasis model to investigate the protective effects of 11g in vivo. Results show that 11g exhibited potent antifungal activity both in vitro and in vivo. Further study shows that 11g caused the unmasking of fungi β-glucan layer, leading to stronger immune responses in macrophages through Dectin-1. These results suggest that 11g is a very promising antifungal candidate, which assists in eliciting stronger immune responses to help host immune system disposing pathogens. The discovery of 11g might expand the toolbox of fungal infection treatment.
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Affiliation(s)
- Xin Huang
- Department of Pharmacology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yu Liu
- School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Tingjunhong Ni
- Department of Pharmacology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liping Li
- Department of Pharmacology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lan Yan
- School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Maomao An
- Department of Pharmacology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Dazhi Zhang
- School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Yuanying Jiang
- Department of Pharmacology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,School of Pharmacy, Second Military Medical University, Shanghai, China
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15
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Vaňková E, Kašparová P, Dulíčková N, Čeřovský V. Combined effect of lasioglossin LL-III derivative with azoles against Candida albicans virulence factors: biofilm formation, phospholipases, proteases and hemolytic activity. FEMS Yeast Res 2020; 20:5824167. [DOI: 10.1093/femsyr/foaa020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/21/2020] [Indexed: 12/18/2022] Open
Abstract
ABSTRACT
Candida albicans has several virulence factors at its disposal, including yeast–hyphal transition associated with biofilm formation, phospholipases, proteases and hemolytic activity, all of which contribute to its pathogenesis. We used synthetic derivative LL-III/43 of antimicrobial peptide lasioglossin LL-III to enhance effect of azoles on attenuation of C. albicans virulence factors. LL-III/43 was able to inhibit initial adhesion or biofilm formation of C. albicans strains at 50 µM. Azoles, however, were ineffective at this concentration. Using fluorescently labeled LL-III/43, we observed that peptide covered C. albicans cells, partially penetrated through their membranes and then accumulated inside cells. LL-III/43 (25 µM) in combination with clotrimazole prevented biofilm formation already at 3.1 µM clotrimazole. Neither LL-III/43 nor azoles were able to significantly inhibit phospholipases, proteases, or hemolytic activity of C. albicans. LL-III/43 (25 µM) and clotrimazole (50 µM) in combination decreased production of these virulence factors, and it completely attenuated its hemolytic activity. Scanning electron microscopy showed that LL-III/43 (50 µM) prevented C. albicans biofilm formation on Ti-6Al-4 V alloy used in orthopedic surgeries and combination of LL-III/43 (25 µM) with clotrimazole (3.1 µM) prevented biofilm formation on urinary catheters. Therefore, mixture of LL-III/43 and clotrimazole is suitable candidate for future pharmaceutical research.
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Affiliation(s)
- Eva Vaňková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 166 10, Prague, Czech Republic
- University of Chemistry and Technology Prague, Technická 5, 166 28, Prague, Czech Republic
| | - Petra Kašparová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 166 10, Prague, Czech Republic
- University of Chemistry and Technology Prague, Technická 5, 166 28, Prague, Czech Republic
| | - Nikola Dulíčková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 166 10, Prague, Czech Republic
- University of Chemistry and Technology Prague, Technická 5, 166 28, Prague, Czech Republic
| | - Václav Čeřovský
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo náměstí 542/2, 166 10, Prague, Czech Republic
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16
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Jiang Y, Liu M, Liu H, Liu S. A critical review: traditional uses, phytochemistry, pharmacology and toxicology of Stephania tetrandra S. Moore (Fen Fang Ji). PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2020; 19:449-489. [PMID: 32336965 PMCID: PMC7180683 DOI: 10.1007/s11101-020-09673-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 04/15/2020] [Indexed: 05/05/2023]
Abstract
ABSTRACT Stephania tetrandra S. Moore (S. tetrandra) is distributed widely in tropical and subtropical regions of Asia and Africa. The root of this plant is known in Chinese as "Fen Fang Ji". It is commonly used in traditional Chinese medicine to treat arthralgia caused by rheumatism, wet beriberi, dysuria, eczema and inflamed sores. Although promising reports have been published on the various chemical constituents and activities of S. tetrandra, no review comprehensively summarizes its traditional uses, phytochemistry, pharmacology and toxicology. Therefore, the review aims to provide a critical and comprehensive evaluation of the traditional use, phytochemistry, pharmacological properties, pharmacokinetics and toxicology of S. tetrandra in China, and meaningful guidelines for future investigations.
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Affiliation(s)
- Yueping Jiang
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008 China
- Institute of Hospital Pharmacy, Central South University, Changsha, 410008 China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 China
| | - Min Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008 China
- Institute of Hospital Pharmacy, Central South University, Changsha, 410008 China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 China
| | - Haitao Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008 China
- Institute of Hospital Pharmacy, Central South University, Changsha, 410008 China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 China
| | - Shao Liu
- Department of Pharmacy, Xiangya Hospital, Central South University, Changsha, 410008 China
- Institute of Hospital Pharmacy, Central South University, Changsha, 410008 China
- Institute for Rational and Safe Medication Practices, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008 China
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17
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Nugraha AS, Damayanti YD, Wangchuk P, Keller PA. Anti-Infective and Anti-Cancer Properties of the Annona Species: Their Ethnomedicinal Uses, Alkaloid Diversity, and Pharmacological Activities. Molecules 2019; 24:molecules24234419. [PMID: 31816948 PMCID: PMC6930583 DOI: 10.3390/molecules24234419] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 11/30/2022] Open
Abstract
Annona species have been a valuable source of anti-infective and anticancer agents. However, only limited evaluations of their alkaloids have been carried out. This review collates and evaluates the biological data from extracts and purified isolates for their anti-infective and anti-cancer activities. An isoquinoline backbone is a major structural alkaloid moiety of the Annona genus, and more than 83 alkaloids have been isolated from this genus alone. Crude extracts of Annona genus are reported with moderate activities against Plasmodium falciparum showing larvicidal activities. However, no pure compounds from the Annona genus were tested against the parasite. The methanol extract of Annona muricata showed apparent antimicrobial activities. The isolated alkaloids from this genus including liriodenine, anonaine, asimilobine showed sensitivity against Staphylococcus epidermidis. Other alkaloids such as (+)-Xylopine and isocoreximine indicated significant anti-cancer activity against A549 and K-562 cell lines, respectively. This review revealed that the alkaloids from Annona genus are rich in structural diversity and pharmacological activities. Further exploration of this genus and their alkaloids has potential for developing novel anti-infective and anticancer drugs.
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Affiliation(s)
- Ari Satia Nugraha
- Drug Utilisation and Discovery Research Group, Faculty of Pharmacy, University of Jember, Jember 68121, Indonesia;
- School of Chemistry & Molecular Bioscience and Molecular Horizons, University of Wollongong, and Illawarra Health & Medical Research Institute, Wollongong, NSW 2533, Australia
- Correspondence: (A.S.N.); (P.A.K.); Tel.: +62-331-324-736 (A.S.N.); +61-2-4221-4692 (P.A.K.)
| | - Yuvita Dian Damayanti
- Drug Utilisation and Discovery Research Group, Faculty of Pharmacy, University of Jember, Jember 68121, Indonesia;
| | - Phurpa Wangchuk
- Centre for Biodiscovery and Molecular Development of Therapeutics, Australian Institute of Tropical Health and Medicine, James Cook University, Cairns, QLD 4878, Australia;
| | - Paul A. Keller
- School of Chemistry & Molecular Bioscience and Molecular Horizons, University of Wollongong, and Illawarra Health & Medical Research Institute, Wollongong, NSW 2533, Australia
- Correspondence: (A.S.N.); (P.A.K.); Tel.: +62-331-324-736 (A.S.N.); +61-2-4221-4692 (P.A.K.)
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18
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Cavalcanti Filho JRN, Silva TF, Nobre WQ, Oliveira de Souza LI, Silva e Silva Figueiredo CS, de Figueiredo RCBQ, de Gusmão NB, Silva MV, Nascimento da Silva LC, Correia MTDS. Antimicrobial activity of Buchenavia tetraphylla against Candida albicans strains isolated from vaginal secretions. PHARMACEUTICAL BIOLOGY 2017; 55:1521-1527. [PMID: 28376640 PMCID: PMC7011787 DOI: 10.1080/13880209.2017.1304427] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 01/25/2017] [Accepted: 03/03/2017] [Indexed: 06/07/2023]
Abstract
CONTEXT Buchenavia tetraphylla (Aubl.) RA Howard (Combretaceae: Combretoideae) is an ethnomedicinal plant with reported antifungal action. OBJECTIVE This study evaluates the antimicrobial activity of B. tetraphylla leaf extracts against clinical isolates of Candida albicans. The morphological alterations, combinatory effects with fluconazole and the cytotoxicity of the active extract were analyzed. MATERIALS AND METHODS Extracts were obtained using different solvents (hexane: BTHE; chloroform: BTCE; ethyl acetate: BTEE; and methanol: BTME). Antimicrobial activity was determined by the broth microdilution method using nine strains of C. albicans isolated from vaginal secretions and one standard strain (UFPEDA 1007). RESULTS All extracts showed anti-C. albicans activity, including against the azole-resistant strains. The MIC values ranged from 156 to 2500 μg/mL for the BTHE; 156 to 1250 μg/mL for the BTCE; 625 to 1250 μg/mL for the BTME and 625 μg/mL to 2500 μg/mL for the BTEE. BTME showed the best anti-C. albicans activity. This extract demonstrated additive/synergistic interactions with fluconazole. Scanning electron microscopy analysis suggested that the BTME interferes with the cell division and development of C. albicans. BTME showed IC50 values of 981 and 3935 μg/mL, against J774 macrophages and human erythrocytes, respectively. This extract also enhanced the production of nitric oxide by J774 macrophages. DISCUSSION AND CONCLUSION Buchenavia tetraphylla methanolic extract (BTME) is a great source of antimicrobial compounds that are able to enhance the action of fluconazole against different C. albicans strains; this action seems related to inhibition of cell division.
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Affiliation(s)
| | - Tiago Fonseca Silva
- Departamento de Bioquímica, Universidade Federal de Pernambuco, Recife, Brasil
- Curso de Farmácia, Faculdade Pernambucana de Saúde, Recife, Brasil
| | | | | | | | | | | | - Márcia Vanusa Silva
- Departamento de Bioquímica, Universidade Federal de Pernambuco, Recife, Brasil
| | - Luís Cláudio Nascimento da Silva
- Curso de Farmácia, Faculdade Pernambucana de Saúde, Recife, Brasil
- Programa de Pós-graduação, Universidade CEUMA, Sao Luis, Brasil
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19
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Vrablikova A, Czernekova L, Cahlikova R, Novy Z, Petrik M, Imran S, Novak Z, Krupka M, Cerovsky V, Turanek J, Raska M. Lasioglossins LLIII affect the morphogenesis of Candida albicans and reduces the duration of experimental vaginal candidiasis in mice. Microbiol Immunol 2017; 61:474-481. [PMID: 28892177 DOI: 10.1111/1348-0421.12538] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 05/22/2017] [Accepted: 09/07/2017] [Indexed: 11/30/2022]
Abstract
Lasioglossins are a group of peptides with identified antimicrobial activity. The inhibitory effects of two synthetic lasioglossin derivatives, LLIII and D-isomeric variant LLIII-D, on morphological changes in Candida albicans in vitro and the effect of local administration of LLIII during experimental murine candidiasis were investigated. C. albicans blastoconidia were grown in the presence of lasioglossin LLIII or LLIII-D at concentrations of 11.5 μM and 21 μM, respectively, for 1, 2 and 3 days and their viability determined by flow cytometry using eosin Y staining. Morphological changes were examined by light and fluorescent microscopy. The Candida-inhibitory effect of daily intravaginal administration of 0.7 or 1.4 μg of LLIII was assessed in mice with experimentally-induced vaginal candidiasis. LLIII and LLIII-D lasioglossins exhibited candidacidal activity in vitro (>76% after 24 hr and >84% after 48 hr of incubation). After 72 hr incubation of Candida with low concentration of lasioglossins, an increase in viability was detected, probably due to a Candida antimicrobial peptides evasion strategy. Furthermore, lasioglossins inhibited temperature-induced morphotype changes toward hyphae and pseudohyphae with sporadic occurrence of atypical cells with two or enlarged nuclei, suggesting interference with mitosis or cytokinesis. Local application of LLIII reduced the duration of experimental candidiasis with no evidence of adverse effects. Lasioglossin LLIII is a promising candidate for development as an antimicrobial drug for treating the vaginal candidiasis.
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Affiliation(s)
- Alena Vrablikova
- Department of Immunology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic
| | - Lydie Czernekova
- Department of Immunology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic
| | - Romana Cahlikova
- Department of Immunology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic
| | - Zbynek Novy
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic
| | - Milos Petrik
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic
| | - Saima Imran
- Department of Immunology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic
| | - Zdenek Novak
- Department of Surgery, University of Alabama at Birmingham, BDB 503, 18th St. So., 35294, Birmingham, Alabama, USA
| | - Michal Krupka
- Department of Immunology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic
| | - Vaclav Cerovsky
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 542/2, 166 10 Praha, Czech Republic
| | - Jaroslav Turanek
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic
| | - Milan Raska
- Department of Immunology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic.,Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, 772 00 Olomouc, Czech Republic.,Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Hudcova 296/70, 621 00 Brno, Czech Republic
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20
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Kumar SN, Mohandas C. An Antifungal Mechanism of Protolichesterinic Acid from the Lichen Usnea albopunctata Lies in the Accumulation of Intracellular ROS and Mitochondria-Mediated Cell Death Due to Apoptosis in Candida tropicalis. Front Pharmacol 2017; 8:301. [PMID: 28611662 PMCID: PMC5447038 DOI: 10.3389/fphar.2017.00301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 05/10/2017] [Indexed: 12/12/2022] Open
Abstract
Candida species causes superficial and life-threatening systemic infections and are difficult to treat due to the resistance of these organism to various clinically used drugs. Protolichesterinic acid is a well-known lichen compound. Although the antibacterial activity of protolichesterinic acid has been reported earlier, the antifungal property and its mechanism of action are still largely unidentified. The goal of the present investigation is to explore the anticandidal activity and mechanism of action of protolichesterinic acid, especially against Candida tropicalis. The Minimum Inhibitory Concentration (MIC) value was established through microdilution techniques against four Candida species and out of four species tested, C. tropicalis showed a significant effect (MIC: 2 μg/ml). In the morphological interference assay, we observed the enhanced inhibition of hyphae when the cells were treated with protolichesterinic acid. Time-kill assay demonstrated that the maximum rate of killing was recorded between 2 and 6 h. C. tropicalis exposed to protolichesterinic acid exhibited an increased ROS production, which is one of the key factors of fungal death. The rise in ROS was due to the dysfunction of mitochondria caused by protolichesterinic acid. We confirmed that protolichesterinic acid-induced dysfunction of mitochondria in C. tropicalis. The damage of cell membrane due to protolichesterinic acid treatment was confirmed by the influx of propidium iodide and was further confirmed by the release of potassium ions. The treatment of protolichesterinic acid also triggered calcium ion signaling. Moreover, it commenced apoptosis which is clearly evidenced by Annexin V and propidium iodide staining. Interestingly protolichesterinic acid recorded excellent immunomodulatory property when tested against lymphocytes. Finally protolichesterinic acid showed low toxicity toward a normal human cell line Foreskin (FS) normal fibroblast. In in vivo test, protolichesterinic acid significantly enhanced the survival of C. tropicalis infected Caenorhabditis elegans. This investigation proposes that the protolichesterinic acid induces apoptosis in C. tropicalis via the enhanced accumulation of intracellular ROS and mitochondrial damage, which leads fungal cell death via apoptosis. Our work revealed a new key aspect of mechanisms of action of protolichesterinic acid in Candida species. This article is the first study on the antifungal and mechanism of action of protolichesterinic acid in Candida species.
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Affiliation(s)
- S N Kumar
- Division of Crop Protection, Central Tuber Crops Research InstituteSreekariyam, India
| | - C Mohandas
- Division of Crop Protection, Central Tuber Crops Research InstituteSreekariyam, India
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21
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Transcriptomic analysis displays the effect of (-)-roemerine on the motility and nutrient uptake in Escherichia coli. Curr Genet 2016; 63:709-722. [PMID: 28013396 DOI: 10.1007/s00294-016-0673-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 12/13/2016] [Accepted: 12/15/2016] [Indexed: 10/20/2022]
Abstract
Among the different families of plant alkaloids, (-)-roemerine, an aporphine type, was recently shown to possess significant antibacterial activity in Escherichia coli. Based on the increasing demand for antibacterials with novel mechanisms of action, the present work investigates the potential of the plant-derived alkaloid (-)-roemerine as an antibacterial in E. coli cells using microarray technology. Analysis of the genome-wide transcriptional reprogramming in cells after 60 min treatment with 100 μg/mL (-)-roemerine showed significant changes in the expression of 241 genes (p value <0.05 and fold change >2). Expression of selected genes was confirmed by qPCR. Differentially expressed genes were classified into functional categories to map biological processes and molecular pathways involved. Cellular activities with roles in carbohydrate transport and metabolism, energy production and conversion, lipid transport and metabolism, amino acid transport and metabolism, two-component signaling systems, and cell motility (in particular, the flagellar organization and motility) were among metabolic processes altered in the presence of (-)-roemerine. The down-regulation of the outer membrane proteins probably led to a decrease in carbohydrate uptake rate, which in turn results in nutrient limitation. Consequently, energy metabolism is slowed down. Interestingly, the majority of the expressional alterations were found in the flagellar system. This suggested reduction in motility and loss in the ability to form biofilms, thus affecting protection of E. coli against host cell defense mechanisms. In summary, our findings suggest that the antimicrobial action of (-)-roemerine in E. coli is linked to disturbances in motility and nutrient uptake.
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Lu M, Li T, Wan J, Li X, Yuan L, Sun S. Antifungal effects of phytocompounds on Candida species alone and in combination with fluconazole. Int J Antimicrob Agents 2016; 49:125-136. [PMID: 28040409 DOI: 10.1016/j.ijantimicag.2016.10.021] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 09/14/2016] [Accepted: 10/14/2016] [Indexed: 12/14/2022]
Abstract
Invasive fungal infections caused by Candida spp. remain the most predominant nosocomial fungal infections. Owing to the increased use of antifungal agents, resistance of Candida spp. to antimycotics has emerged frequently, especially to fluconazole (FLC). To cope with this issue, new efforts have been dedicated to discovering novel antimycotics or new agents that can enhance the susceptibility of Candida spp. to existing antimycotics. The secondary metabolites of plants represent a large library of compounds that are important sources for new drugs or compounds suitable for further modification. Research on the anti-Candida activities of phytocompounds has been carried out in recent years and the results showed that a series of phytocompounds have anti-Candida properties, such as phenylpropanoids, flavonoids, terpenoids and alkaloids. Among these phytocompounds, some displayed potent antifungal activity, with minimum inhibitory concentrations (MICs) of ≤8 µg/mL, and several compounds were even more effective against drug-resistant Candida spp. than FLC or itraconazole (e.g. honokiol, magnolol and shikonin). Interestingly, quite a few phytocompounds not only displayed anti-Candida activity alone but also synergised with FLC against Candida spp., even leading to a reversal of FLC resistance. This review focuses on summarising the anti-Candida activities of phytocompounds as well as the interactions of phytocompounds with FLC. In addition, we briefly overview the synergistic mechanisms and present the structure of the antimycotic phytocompounds. Hopefully, this analysis will provide insight into antifungal agent discovery and new approaches against antifungal drug resistance.
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Affiliation(s)
- Mengjiao Lu
- School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong Province 250012, China
| | - Tao Li
- Intensive Care Unit, Qianfoshan Hospital affiliated to Shandong University, Jinan, Shandong Province 250014, China
| | - Jianjian Wan
- Department of Respiratory, Yucheng People's Hospital, Yucheng, Shandong Province 251200, China
| | - Xiuyun Li
- School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong Province 250012, China
| | - Lei Yuan
- Department of Pharmacy, Baodi District People's Hospital, Tianjin 301800, China
| | - Shujuan Sun
- Department of Pharmacy, Qianfoshan Hospital Affiliated to Shandong University, Jinan, Shandong Province 250014, China.
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Woolford CA, Lagree K, Xu W, Aleynikov T, Adhikari H, Sanchez H, Cullen PJ, Lanni F, Andes DR, Mitchell AP. Bypass of Candida albicans Filamentation/Biofilm Regulators through Diminished Expression of Protein Kinase Cak1. PLoS Genet 2016; 12:e1006487. [PMID: 27935965 PMCID: PMC5147786 DOI: 10.1371/journal.pgen.1006487] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/15/2016] [Indexed: 12/17/2022] Open
Abstract
Biofilm formation on implanted medical devices is a major source of lethal invasive infection by Candida albicans. Filamentous growth of this fungus is tied to biofilm formation because many filamentation-associated genes are required for surface adherence. Cell cycle or cell growth defects can induce filamentation, but we have limited information about the coupling between filamentation and filamentation-associated gene expression after cell cycle/cell growth inhibition. Here we identified the CDK activating protein kinase Cak1 as a determinant of filamentation and filamentation-associated gene expression through a screen of mutations that diminish expression of protein kinase-related genes implicated in cell cycle/cell growth control. A cak1diminished expression (DX) strain displays filamentous growth and expresses filamentation-associated genes in the absence of typical inducing signals. In a wild-type background, expression of filamentation-associated genes depends upon the transcription factors Bcr1, Brg1, Efg1, Tec1, and Ume6. In the cak1 DX background, the dependence of filamentation-associated gene expression on each transcription factor is substantially relieved. The unexpected bypass of filamentation-associated gene expression activators has the functional consequence of enabling biofilm formation in the absence of Bcr1, Brg1, Tec1, Ume6, or in the absence of both Brg1 and Ume6. It also enables filamentous cell morphogenesis, though not biofilm formation, in the absence of Efg1. Because these transcription factors are known to have shared target genes, we suggest that cell cycle/cell growth limitation leads to activation of several transcription factors, thus relieving dependence on any one. The ability of the pathogen Candida albicans to grow on surfaces as biofilms is a determinant of infection ability, because biofilms on implanted medical devices seed infections. Biofilm formation by this organism requires growth in the form of filamentous cells and the expression of filamentation-associated genes. Inhibition of cell proliferation can induce filamentous cell formation, as we find here for strains that express greatly reduced levels of the cell cycle regulator Cak1. Surprisingly, biofilm formation occurs independently of many central biofilm regulatory genes when Cak1 levels are reduced. This response to proliferation inhibition may reflect the activation of numerous biofilm regulators, thus relieving the dependence on any one regulator. The stimulation of biofilm formation by proliferation inhibition, a property of many bacterial pathogens as well, may contribute to the limited effectiveness of antimicrobials against biofilms.
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Affiliation(s)
- Carol A. Woolford
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
| | - Katherine Lagree
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
| | - Wenjie Xu
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
| | - Tatyana Aleynikov
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
| | - Hema Adhikari
- Department of Biological Sciences at the University at Buffalo, Buffalo, New York, United States of America
| | - Hiram Sanchez
- Departments of Medicine and Medical Microbiology and Immunology, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Paul J. Cullen
- Department of Biological Sciences at the University at Buffalo, Buffalo, New York, United States of America
| | - Frederick Lanni
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
| | - David R. Andes
- Departments of Medicine and Medical Microbiology and Immunology, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Aaron P. Mitchell
- Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America
- * E-mail:
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Possible role of hydrolytic enzymes (Sap, Kex2) in Candida albicans response to aromatic compounds bearing a sulfone moiety. CHEMICAL PAPERS 2016. [DOI: 10.1515/chempap-2016-0072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
AbstractHydrolytic enzymes e.g., Saps and
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Yin S, Rao G, Wang J, Luo L, He G, Wang C, Ma C, Luo X, Hou Z, Xu G. Roemerine Improves the Survival Rate of Septicemic BALB/c Mice by Increasing the Cell Membrane Permeability of Staphylococcus aureus. PLoS One 2015; 10:e0143863. [PMID: 26606133 PMCID: PMC4659618 DOI: 10.1371/journal.pone.0143863] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 11/10/2015] [Indexed: 11/29/2022] Open
Abstract
Staphylococcus aureus is one of the most frequently occurring hospital- and community-associated pathogenic bacteria featuring high morbidity and mortality. The occurrence of methicillin-resistant S. aureus (MRSA) has increased persistently over the years. Therefore, developing novel anti-MRSA drugs to circumvent drug resistance of S. aureus is highly important. Roemerine, an aporphine alkaloid, has previously been reported to exhibit antibacterial activity. The present study aimed to investigate whether roemerine can maintain these activities against S.aureus in vivo and further explore the underlying mechanism. We found that roemerine is effective in vitro against four S. aureus strains as well as in vivo against MRSA insepticemic BALB/c mice. Furthermore, roemerine was found to increase cell membrane permeability in a concentration-dependent manner. These findings suggest that roemerine may be developed as a promising compound for treating S. aureus, especially methicillin-resistant strains of these bacteria.
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Affiliation(s)
- Sunjun Yin
- Department of Pharmacy, Kunming General Hospital of Chengdu Military Region, Kunming, Yunnan, 650500, China
| | - Gaoxiong Rao
- Yunnan University of Traditional Chinese Medicine, Kunming, Yunnan, 650500, China
| | - Jin Wang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi, 710032, China
| | - Liyang Luo
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi, 710032, China
| | - Gonghao He
- Department of Pharmacy, Kunming General Hospital of Chengdu Military Region, Kunming, Yunnan, 650500, China
| | - Chengying Wang
- Yunnan University of Traditional Chinese Medicine, Kunming, Yunnan, 650500, China
| | - Chaoyu Ma
- Kunming Medical University, Kunming, Yunnan, 650500, China
| | - Xiaoxing Luo
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi, 710032, China
| | - Zheng Hou
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, Shaanxi, 710032, China
- * E-mail: (ZH); (GLX)
| | - Guili Xu
- Department of Pharmacy, Kunming General Hospital of Chengdu Military Region, Kunming, Yunnan, 650500, China
- * E-mail: (ZH); (GLX)
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