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Zhao L, Zhang S, Xiao R, Zhang C, Lyu Z, Zhang F. Diversity and Functionality of Bacteria Associated with Different Tissues of Spider Heteropoda venatoria Revealed through Integration of High-Throughput Sequencing and Culturomics Approaches. MICROBIAL ECOLOGY 2024; 87:67. [PMID: 38703220 PMCID: PMC11069485 DOI: 10.1007/s00248-024-02383-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 04/19/2024] [Indexed: 05/06/2024]
Abstract
Spiders host a diverse range of bacteria in their guts and other tissues, which have been found to play a significant role in their fitness. This study aimed to investigate the community diversity and functional characteristics of spider-associated bacteria in four tissues of Heteropoda venatoria using HTS of the 16S rRNA gene and culturomics technologies, as well as the functional verification of the isolated strains. The results of HTS showed that the spider-associated bacteria in different tissues belonged to 34 phyla, 72 classes, 170 orders, 277 families, and 458 genera. Bacillus was found to be the most abundant bacteria in the venom gland, silk gland, and ovary, while Stenotrophomonas, Acinetobacter, and Sphingomonas were dominant in the gut microbiota. Based on the amplicon sequencing results, 21 distinct cultivation conditions were developed using culturomics to isolate bacteria from the ovary, gut, venom gland, and silk gland. A total of 119 bacterial strains, representing 4 phyla and 25 genera, with Bacillus and Serratia as the dominant genera, were isolated. Five strains exhibited high efficiency in degrading pesticides in the in vitro experiments. Out of the 119 isolates, 28 exhibited antibacterial activity against at least one of the tested bacterial strains, including the pathogenic bacteria Staphylococcus aureus, Acinetobacter baumanii, and Enterococcus faecalis. The study also identified three strains, GL312, PL211, and PL316, which exhibited significant cytotoxicity against MGC-803. The crude extract from the fermentation broth of strain PL316 was found to effectively induce apoptosis in MGC-803 cells. Overall, this study offers a comprehensive understanding of the bacterial community structure associated with H. venatoria. It also provides valuable insights into discovering novel antitumor natural products for gastric cancer and xenobiotic-degrading bacteria of spiders.
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Affiliation(s)
- Likun Zhao
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, People's Republic of China
- The Key Laboratory of Microbial Diversity Research and Application of Hebei Province, Baoding, 071002, People's Republic of China
| | - Shanfeng Zhang
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, People's Republic of China
| | - Ruoyi Xiao
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, People's Republic of China
| | - Chao Zhang
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, People's Republic of China
| | - Zhitang Lyu
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, People's Republic of China.
- The Key Laboratory of Microbial Diversity Research and Application of Hebei Province, Baoding, 071002, People's Republic of China.
| | - Feng Zhang
- College of Life Sciences, Institute of Life Sciences and Green Development, Hebei University, Baoding, 071002, People's Republic of China.
- The Key Laboratory of Zoological Systematics and Application of Hebei Province, Baoding, 071002, People's Republic of China.
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Alsufyani T, Al-Otaibi N, Alotaibi NJ, M'sakni NH, Alghamdi EM. GC Analysis, Anticancer, and Antibacterial Activities of Secondary Bioactive Compounds from Endosymbiotic Bacteria of Pomegranate Aphid and Its Predator and Protector. Molecules 2023; 28:molecules28104255. [PMID: 37241995 DOI: 10.3390/molecules28104255] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/10/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Bacterial secondary metabolites are a valuable source of various molecules that have antibacterial and anticancer activity. In this study, ten endosymbiotic bacteria of aphids, aphid predators and ants were isolated. Bacterial strains were identified according to the 16S rRNA gene. Ethyl acetate fractions of methanol extract (EA-ME) were prepared from each isolated bacterium and tested for their antibacterial activities using the disk diffusion method. The EA-ME of three bacterial species, Planococcus sp., Klebsiella aerogenes, Enterococcus avium, from the pomegranate aphids Aphis punicae, Chrysoperia carnea, and Tapinoma magnum, respectively, exhibited elevated antibacterial activity against one or several of the five pathogenic bacteria tested. The inhibition zones ranged from 10.00 ± 0.13 to 20.00 ± 1.11 mm, with minimum inhibitory concentration (MIC) values ranging from 0.156 mg/mL to 1.25 mg/mL. The most notable antibacterial activity was found in the EA-ME of K. aerogenes against Klebsiella pneumonia and Escherichia coli, with an MIC value of 0.156 mg/mL. The cytotoxic activity of EA-ME was dependent on the cell line tested. The most significant cytotoxicity effect was observed for extracts of K. aerogenes and E. avium, at 12.5 µg/mL, against the epithelial cells of lung carcinoma (A549), with a cell reduction of 79.4% and 67.2%, respectively. For the EA-ME of K. aerogenes and Pantoea agglomerans at 12.5 µg/mL, 69.4% and 67.8% cell reduction were observed against human colon cancer (Hct116), respectively. Gas chromatography-mass spectrometry (GC-MS) analysis of three EA-ME revealed the presence of several bioactive secondary metabolites that have been reported previously to possess antibacterial and anticancer properties. To the best of our knowledge, this is the first study to examine the biological activities of endosymbiotic bacteria in aphids, aphid predators and ants. The promising data presented in this study may pave the way for alternative drugs to overcome the continued emergence of multidrug-resistant bacteria, and find alternative drugs to conventional cancer therapies.
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Affiliation(s)
- Taghreed Alsufyani
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- High Altitude Research Centre, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Najwa Al-Otaibi
- High Altitude Research Centre, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Noura J Alotaibi
- High Altitude Research Centre, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Nour Houda M'sakni
- Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- High Altitude Research Centre, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Laboratory of the Interfaces and Advanced Materials (LIMA), Science Faculty, Monastir University, P.O. Box 05019, Monastir 5019, Tunisia
| | - Eman M Alghamdi
- Chemistry Department, Faculty of Science, King Abdul Aziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia
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Wang M, Huang Y, Xin M, Li T, Wang X, Fang Y, Liang S, Cai T, Xu X, Dong L, Wang C, Xu Z, Song X, Li J, Zheng Y, Sun W, Li L. The impact of microbially modified metabolites associated with obesity and bariatric surgery on antitumor immunity. Front Immunol 2023; 14:1156471. [PMID: 37266441 PMCID: PMC10230250 DOI: 10.3389/fimmu.2023.1156471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 04/24/2023] [Indexed: 06/03/2023] Open
Abstract
Obesity is strongly associated with the occurrence and development of many types of cancers. Patients with obesity and cancer present with features of a disordered gut microbiota and metabolism, which may inhibit the physiological immune response to tumors and possibly damage immune cells in the tumor microenvironment. In recent years, bariatric surgery has become increasingly common and is recognized as an effective strategy for long-term weight loss; furthermore, bariatric surgery can induce favorable changes in the gut microbiota. Some studies have found that microbial metabolites, such as short-chain fatty acids (SCFAs), inosine bile acids and spermidine, play an important role in anticancer immunity. In this review, we describe the changes in microbial metabolites initiated by bariatric surgery and discuss the effects of these metabolites on anticancer immunity. This review attempts to clarify the relationship between alterations in microbial metabolites due to bariatric surgery and the effectiveness of cancer treatment. Furthermore, this review seeks to provide strategies for the development of microbial metabolites mimicking the benefits of bariatric surgery with the aim of improving therapeutic outcomes in cancer patients who have not received bariatric surgery.
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Affiliation(s)
- Meng Wang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
- National Institute of Traditional Chinese Medicine Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yuhong Huang
- College of Life Science, Yangtze University, Jingzhou, Hubei, China
| | - Meiling Xin
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Tianxing Li
- National Institute of Traditional Chinese Medicine Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xueke Wang
- National Institute of Traditional Chinese Medicine Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
- The Second Clinical Medical College, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Yini Fang
- National Institute of Traditional Chinese Medicine Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
- Basic Medical College, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Shufei Liang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Tianqi Cai
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Xiaoxue Xu
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Ling Dong
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Chao Wang
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Zhengbao Xu
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Xinhua Song
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Jingda Li
- College of Life Science, Yangtze University, Jingzhou, Hubei, China
| | - Yanfei Zheng
- National Institute of Traditional Chinese Medicine Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Wenlong Sun
- School of Life Sciences and Medicine, Shandong University of Technology, Zibo, Shandong, China
| | - Lingru Li
- National Institute of Traditional Chinese Medicine Constitution and Preventive Medicine, Beijing University of Chinese Medicine, Beijing, China
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Li J, Wang YF, Shen ZC, Zou Q, Lin XF, Wang XY. Recent developments on natural polysaccharides as potential anti-gastric cancer substance: Structural feature and bioactivity. Int J Biol Macromol 2023; 232:123390. [PMID: 36706878 DOI: 10.1016/j.ijbiomac.2023.123390] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 01/13/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023]
Abstract
Gastric cancer (GC) is being a serious threat to human health. Seeking safer and more effective ingredients for anti-GC is of significance. Increasing natural polysaccharides (NPs) have been demonstrated to possess anti-GC activity. However, the information on anti-GC NPs is scattered. For well-understanding the potential of NPs as anti-GC substances, the recent developments on structure, bioactivity and mechanism of anti-GC NPs were comprehensively reviewed in this article. Meanwhile, the structure-activity relationship was discussed. Recent studies indicated that anti-GC NPs could be mainly divided into glucan and heteropolysaccharide, whose structures affected by sources and protocols of extraction and purification. NPs exhibited anti-GC activities in cell and animal experiments as well as clinical trials, and the mechanisms might be anti-proliferation, inducing apoptosis, anti-metastasis and anti-invasion, inducing autophagy, boosting immunity, anti-angiogenesis, reducing drug resistance, anti-angiogenesis, improving antioxidant level and changing metabolites. Moreover, structural features included molecular weight, functional groups, uronic acid and monosaccharide composition, glycosidic linkage type, and degree of branching and conformation might influence the activities. Otherwise, modifications could enhance the anti-GC activity of NPs, and anti-GC NPs could be combinedly used with chemotherapeutic drugs. This review supports the applications of NPs in anti-GC and provides theoretical basis for future study.
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Affiliation(s)
- Jing Li
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Yi-Fei Wang
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Zi-Chun Shen
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Qi Zou
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Xiao-Fan Lin
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China
| | - Xiao-Yin Wang
- School of Public Health and Health Management, Gannan Medical University, Ganzhou 341000, China.
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5
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Ngashangva N, Mukherjee PK, Sharma C, Kalita MC, Sarangthem I. Integrated genomics and proteomics analysis of Paenibacillus peoriae IBSD35 and insights into its antimicrobial characteristics. Sci Rep 2022; 12:18861. [PMID: 36344671 PMCID: PMC9640621 DOI: 10.1038/s41598-022-23613-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
Abstract
Antimicrobial resistance has been developing fast and incurring a loss of human life, and there is a need for new antimicrobial agents. Naturally occurring antimicrobial peptides offer the characteristics to counter AMR because the resistance development is low or no resistance. Antimicrobial peptides from Paenibacillus peoriae IBSD35 cell-free supernatant were salted out and purified using chromatography and characterized with liquid chromatography-tandem-mass spectrometry. The extract has shown a high and broad spectrum of antimicrobial activity. Combining the strain IBSD35 genome sequence with its proteomic data enabled the prediction of biosynthetic gene clusters by connecting the peptide from LC-MS/MS data to the gene that encode. Antimicrobial peptide databases offered a platform for the effective search, prediction, and design of AMPs and expanded the studies on their isolation, structure elucidation, biological evaluation, and pathway engineering. The genome-based taxonomy and comparisons have shown that P. peoriae IBSD35 is closely related to Paenibacillus peoriae FSL J3-0120. P. peoriae IBSD35 harbored endophytic trait genes and nonribosomal peptide synthases biosynthetic gene clusters. The comparative genomics revealed evolutionary insights and facilitated the discovery of novel SMs using proteomics from the extract of P. peoriae IBSD35. It will increase the potential to find novel bio-molecules to counter AMR.
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Affiliation(s)
- Ng Ngashangva
- grid.464584.f0000 0004 0640 0101A National Institute of Department of Biotechnology, Institute of Bioresources and Sustainable Development (IBSD), Govt. of India, Takyelpat, Imphal, Manipur 795001 India
| | - Pulok K. Mukherjee
- grid.464584.f0000 0004 0640 0101A National Institute of Department of Biotechnology, Institute of Bioresources and Sustainable Development (IBSD), Govt. of India, Takyelpat, Imphal, Manipur 795001 India
| | - Chandradev Sharma
- grid.464584.f0000 0004 0640 0101A National Institute of Department of Biotechnology, Institute of Bioresources and Sustainable Development (IBSD), Govt. of India, Takyelpat, Imphal, Manipur 795001 India
| | - Mohan C. Kalita
- grid.411779.d0000 0001 2109 4622Department of Biotechnology, Gauhati University, Jalukbari, Guwahati, Assam 781014 India
| | - Indira Sarangthem
- grid.464584.f0000 0004 0640 0101A National Institute of Department of Biotechnology, Institute of Bioresources and Sustainable Development (IBSD), Govt. of India, Takyelpat, Imphal, Manipur 795001 India
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6
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Kandasamy GD, Kathirvel P. Insights into bacterial endophytic diversity and isolation with a focus on their potential applications –A review. Microbiol Res 2022; 266:127256. [DOI: 10.1016/j.micres.2022.127256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 11/02/2022] [Accepted: 11/06/2022] [Indexed: 11/14/2022]
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Zhou J, Xie Y, Liao Y, Li X, Li Y, Li S, Ma X, Lei S, Lin F, Jiang W, He YQ. Characterization of a Bacillus velezensis strain isolated from Bolbostemmatis Rhizoma displaying strong antagonistic activities against a variety of rice pathogens. Front Microbiol 2022; 13:983781. [PMID: 36246295 PMCID: PMC9555170 DOI: 10.3389/fmicb.2022.983781] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/30/2022] [Indexed: 11/25/2022] Open
Abstract
Biological control is an effective measure in the green control of rice diseases. To search for biocontrol agents with broad-spectrum and high efficiency against rice diseases, in this study, a strain of antagonistic bacterium BR-01 with strong inhibitory effect against various rice diseases was isolated from Bolbostemmatis Rhizoma by plate confrontation method. The strain was identified as Bacillus velezensis by morphological observation, physiological and biochemical identification, and molecular characterization by 16S rDNA and gyrB gene sequencing analysis. The confrontation test (dual culture) and Oxford cup assays demonstrated that B. velezensis BR-01 had strong antagonistic effects on Magnaporthe oryzae, Ustilaginoidea virens, Fusarium fujikuroi, Xanthomonas oryzae pv. Oryzicola, and Xanthomonas oryzae pv. oryzae, the major rice pathogens. The genes encoding antimicrobial peptides (ituA, ituD, bmyB, bmyC, srfAA, fenB, fenD, bacA, and bacD) were found in B. velezensis BR-01 by PCR amplification with specific primers. B. velezensis BR-01 could produce protease, cellulase, β-1,3-glucanase, chitinase, indoleacetic acid, siderophore, and 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and might produce three lipopeptide antibiotics, surfactin, iturin, and fengycin based on Liquid chromatography–mass spectrometry (LC-MS) results. Furthermore, the plant assays showed that B. velezensis BR-01 had significant control effects on rice bacterial blight and bacterial leaf streak by pot experiments in greenhouse. In conclusion, B. velezensis BR-01 is a broad-spectrum antagonistic bacterium and has the potential as the ideal biocontrol agent in controlling multiple rice diseases with high efficiency.
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Affiliation(s)
- Jianping Zhou
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
| | - Yunqiao Xie
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Yuhong Liao
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Xinyang Li
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Yiming Li
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
| | - Shuping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
| | - Xiuguo Ma
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Shimin Lei
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Fei Lin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou, China
| | - Wei Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
- *Correspondence: Wei Jiang,
| | - Yong-Qiang He
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresource and College of Life Science and Technology, Nanning, China
- Yong-Qiang He,
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Sheng S, Fu Y, Pan N, Zhang H, Xiu L, Liang Y, Liu Y, Liu B, Ma C, Du R, Wang X. Novel exopolysaccharide derived from probiotic Lactobacillus pantheris TCP102 strain with immune-enhancing and anticancer activities. Front Microbiol 2022; 13:1015270. [PMID: 36225355 PMCID: PMC9549278 DOI: 10.3389/fmicb.2022.1015270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 08/30/2022] [Indexed: 11/24/2022] Open
Abstract
Probiotics are gaining attention due to their functions of regulating the intestinal barrier and promoting human health. The production of exopolysaccharide (EPS) is one of the important factors for probiotics to exert beneficial properties. This study aimed to screen exopolysaccharides-producing lactic acid bacteria (LAB) and evaluate the probiotic potential. we obtained three exopolysaccharide fractions (EPS1, EPS2, and EPS3) from Lactobacillus pantheris TCP102 and purified by a combination of ion-exchange chromatography and gel permeation chromatography. The structures of the fractions were characterized by FT-IR, UV, HPLC, and scanning electron microscopy (SEM) analysis. The Mw of EPS1, EPS2, and EPS3 were approximately 20.3, 23.0, and 19.3 kDa, and were mainly composed of galactose, glucose, and mannose, with approximate molar ratios of 2.86:1:1.48, 1.26:1:1, 1.58:1.80:1, respectively. Furthermore, SEM analysis demonstrated that the three polysaccharide fractions differ in microstructure and surface morphology. Additionally, preliminary results for immune-enhancing and anticancer activities reveal that these EPSs significantly induced the production of nitric oxide (NO), TNF-α, and IL-6 in Ana-1 cells and peritoneal macrophage cells. Meanwhile, the EPSs also significantly suppressed the proliferation of HCT-116, BCG-803, and particularly A-2780 cells. The results suggest that the three novel EPSs isolated from Lactobacillus pantheris TCP102 can be regarded as potential application value in functional food and natural antitumor drugs.
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Affiliation(s)
- Shouxin Sheng
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yubing Fu
- School of Life Sciences, Faculty of Medicine and Life Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University, Xiamen, China
| | - Na Pan
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Haochi Zhang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Lei Xiu
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yanchen Liang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yang Liu
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Bohui Liu
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Cheng Ma
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Ruiping Du
- Animal Nutrition Institute, Agriculture and Animal Husbandry Academy of Inner Mongolia, Hohhot, China
- *Correspondence: Ruiping Du,
| | - Xiao Wang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
- Xiao Wang,
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9
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Alshawwa SZ, Alshallash KS, Ghareeb A, Elazzazy AM, Sharaf M, Alharthi A, Abdelgawad FE, El-Hossary D, Jaremko M, Emwas AH, Helmy YA. Assessment of Pharmacological Potential of Novel Exopolysaccharide Isolated from Marine Kocuria sp. Strain AG5: Broad-Spectrum Biological Investigations. Life (Basel) 2022; 12:life12091387. [PMID: 36143424 PMCID: PMC9504734 DOI: 10.3390/life12091387] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 12/24/2022] Open
Abstract
With more than 17 clinically approved Drugs and over 20 prodrugs under clinical investigations, marine bacteria are believed to have a potential supply of innovative therapeutic bioactive compounds. In the current study, Kocuria sp. strain AG5 isolated from the Red Sea was identified and characterized by biochemical and physiological analysis, and examination of a phylogenetic 16S rRNA sequences. Innovative exopolysaccharide (EPS) was separated from the AG5 isolate as a major fraction of EPS (EPSR5, 6.84 g/L−1). The analysis of EPSR5 revealed that EPSR5 has a molecular weight (Mw) of 4.9 × 104 g/mol and number average molecular weight (Mn) of 5.4 × 104 g/mol and contains sulfate (25.6%) and uronic acid (21.77%). Analysis of the monosaccharide composition indicated that the EPSR5 fraction composes of glucose, galacturonic acid, arabinose, and xylose in a molar ratio of 2.0:0.5:0.25:1.0, respectively. Assessment of the pharmacological potency of EPSR5 was explored by examining its cytotoxicity, anti-inflammatory, antioxidant, and anti-acetylcholine esterase influences. The antioxidant effect of EPSR5 was dose- and time-dependently increased and the maximum antioxidant activity (98%) was observed at 2000 µg/mL after 120 min. Further, EPSR5 displayed a significant repressive effect regarding the proliferation of HepG-2, A-549, HCT-116, MCF7, HEP2, and PC3 cells with IC50 453.46 ± 21.8 µg/mL, 873.74 ± 15.4 µg/mL, 788.2 ± 32.6 µg/mL, 1691 ± 44.2 µg/mL, 913.1 ± 38.8 µg/mL, and 876.4 ± 39.8 µg/mL, respectively. Evaluation of the inhibitory activity of the anti-inflammatory activity of EPSR5 indicated that EPSR5 has a significant inhibitory activity toward lipoxygenase (5-LOX) and cyclooxygenase (COX-2) activities (IC50 15.39 ± 0.82 µg/mL and 28.06 ± 1.1 µg/mL, respectively). Finally, ESPR5 presented a substantial hemolysis suppressive action with an IC50 of 65.13 ± 0.89 µg /mL, and a considerable inhibitory activity toward acetylcholine esterase activity (IC50 797.02 μg/mL). Together, this study reveals that secondary metabolites produced by Kocuria sp. strain AG5 marine bacteria serve as an important source of pharmacologically active compounds, and their impact on human health is expected to grow with additional global work and research.
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Affiliation(s)
- Samar Zuhair Alshawwa
- Department of Pharmaceutical Sciences, College of Pharmacy, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Khalid S. Alshallash
- College of Science and Humanities—Huraymila, Imam Mohammed Bin Saud Islamic University (IMSIU), Riyadh Province, Riyadh 11432, Saudi Arabia
| | - Ahmed Ghareeb
- Botany and Microbiology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Ahmed M. Elazzazy
- National Research Centre, Department of Chemistry of Natural and Microbial Products, Division of Pharmaceutical and Drug Industries, Cairo 12622, Egypt
| | - Mohamed Sharaf
- Department of Biochemistry, Faculty of Agriculture, AL-Azhar University, Cairo 11751, Egypt
| | - Afaf Alharthi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif 21944, Saudi Arabia
| | - Fathy Elsayed Abdelgawad
- Medical Biochemistry Department, Faculty of Medicine, Al-Azhar University, Cairo 11651, Egypt
- Chemistry Department, Faculty of Science, Islamic University of Madinah, Madinah 42351, Saudi Arabia
| | - Dalia El-Hossary
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Zagazig 44519, Egypt
| | - Mariusz Jaremko
- Smart-Health Initiative and Red Sea Research Center, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, P.O. Box 4700, Thuwal 23955-6900, Saudi Arabia
| | - Abdul-Hamid Emwas
- Core Labs, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Yosra A. Helmy
- Department of Animal Hygiene, Zoonoses and Animal Ethology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 41522, Egypt
- Department of Veterinary Science, College of Agriculture, Food, and Environment, University of Kentucky, Lexington, KY 40503, USA
- Correspondence:
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Falade AO, Adewole KE, Ekundayo TC. Aptitude of endophytic microbes for production of novel biocontrol agents and industrial enzymes towards agro-industrial sustainability. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2021. [DOI: 10.1186/s43088-021-00146-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Abstract
Background
Endophytes have continued to receive increased attention worldwide, probably, due to the enormous biotechnological potentials spanning through various industrial sectors. This paper outlines the biotechnological potentials of endophytes in biocontrol and industrial enzyme production, and the possible contribution towards achieving agro-industrial sustainability using published articles on endophytes in both Web of Science and Scopus (1990–2020).
Main body of the abstract
This review discusses the potential of endophytes to produce novel secondary metabolites with effective biocontrol activity against insect pests and plant pathogens. More so, the aptitude of endophytes for production of a wide range of enzymes with potential applications in agriculture, energy and health is discussed in this review. Furthermore, this review highlights the emerging potentials of endophytes in the production of exopolysaccharide and fatty acids. This paper also advocates the need for bioprospecting endophytes for novel biocontrol agents against termites, which are known for causing significant damage to forest and stored products.
Short conclusion
Exploration of endophytes for biocontrol and production of biomolecules of industrial significance could contribute significantly towards agricultural and industrial sustainability.
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Genome Mining Associated with Analysis of Structure, Antioxidant Activity Reveals the Potential Production of Levan-Rich Exopolysaccharides by Food-Derived Bacillus velezensis VTX20. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11157055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Exopolysaccharides (EPSs) produced by Bacillus species have recently emerged as promising commercial antioxidants in various industries, such as pharmaceutics and biomedicine. However, little is known about EPS production and function from Bacillus velezensis so far. In the present study, the effect of sugar sources on EPS production by B. velezensis VTX20 and the genetic biosynthesis, characteristics, and antioxidant activity of the resulting EPS were evaluated. The strain VTX20 produced the maximum EPS yield of 75.5 ± 4.8 g/L from an initial 200 g/L of sucrose after a 48-h cultivation. Through genomic analysis, ls-levB operon was found, for the first time, to be responsible for the levan-type EPS production in B. velezensis. Biochemical and structural characterization further confirmed the majority of levan, followed by an extremely low level of dextran biopolymer. The water solubility index and water holding capacity of the EPSs were 81.9 ± 3.4% and 100.2 ± 3.4%, respectively. In vitro antioxidant activity analyses showed strong scavenging activity for 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radical values of 40.1–64.0% and 16.0–40%, respectively. These findings shed light on the EPS biosynthesis of B. velezensis at both structural and genetic levels and the potential application of EPS as a natural antioxidant for pharmaceutical and biomedical industries.
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Ngashangva N, Mukherjee P, Sharma KC, Kalita MC, Indira S. Analysis of Antimicrobial Peptide Metabolome of Bacterial Endophyte Isolated From Traditionally Used Medicinal Plant Millettia pachycarpa Benth. Front Microbiol 2021; 12:656896. [PMID: 34149644 PMCID: PMC8208310 DOI: 10.3389/fmicb.2021.656896] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 04/21/2021] [Indexed: 12/13/2022] Open
Abstract
Increasing prevalence of antimicrobial resistance (AMR) has posed a major health concern worldwide, and the addition of new antimicrobial agents is diminishing due to overexploitation of plants and microbial resources. Inevitably, alternative sources and new strategies are needed to find novel biomolecules to counter AMR and pandemic circumstances. The association of plants with microorganisms is one basic natural interaction that involves the exchange of biomolecules. Such a symbiotic relationship might affect the respective bio-chemical properties and production of secondary metabolites in the host and microbes. Furthermore, the discovery of taxol and taxane from an endophytic fungus, Taxomyces andreanae from Taxus wallachiana, has stimulated much research on endophytes from medicinal plants. A gram-positive endophytic bacterium, Paenibacillus peoriae IBSD35, was isolated from the stem of Millettia pachycarpa Benth. It is a rod-shaped, motile, gram-positive, and endospore-forming bacteria. It is neutralophilic as per Joint Genome Institute’s (JGI) IMG system analysis. The plant was selected based on its ethnobotany history of traditional uses and highly insecticidal properties. Bioactive molecules were purified from P. peoriae IBSD35 culture broth using 70% ammonium sulfate and column chromatography techniques. The biomolecule was enriched to 151.72-fold and the yield percentage was 0.05. Peoriaerin II, a highly potent and broad-spectrum antimicrobial peptide against Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, and Candida albicans ATCC 10231 was isolated. LC-MS sequencing revealed that its N-terminal is methionine. It has four negatively charged residues (Asp + Glu) and a total number of two positively charged residues (Arg + Lys). Its molecular weight is 4,685.13 Da. It is linked to an LC-MS/MS inferred biosynthetic gene cluster with accession number A0A2S6P0H9, and blastp has shown it is 82.4% similar to fusaricidin synthetase of Paenibacillus polymyxa SC2. The 3D structure conformation of the BGC and AMP were predicted using SWISS MODEL homology modeling. Therefore, combining both genomic and proteomic results obtained from P. peoriae IBSD35, associated with M. pachycarpa Benth., will substantially increase the understanding of antimicrobial peptides and assist to uncover novel biological agents.
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Affiliation(s)
- Ng Ngashangva
- A National Institute of Department of Biotechnology, Institute of Bioresources and Sustainable Development (IBSD), Govt. of India, Imphal, India
| | - Pulok Mukherjee
- A National Institute of Department of Biotechnology, Institute of Bioresources and Sustainable Development (IBSD), Govt. of India, Imphal, India
| | - K Chandradev Sharma
- A National Institute of Department of Biotechnology, Institute of Bioresources and Sustainable Development (IBSD), Govt. of India, Imphal, India
| | - M C Kalita
- Department of Biotechnology, Gauhati University, Guwahati, India
| | - Sarangthem Indira
- A National Institute of Department of Biotechnology, Institute of Bioresources and Sustainable Development (IBSD), Govt. of India, Imphal, India
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13
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Antunes VDC, Freitag D, Serrato RV. Differential exopolysaccharide production and composition by Herbaspirillum strains from diverse ecological environments. Arch Microbiol 2021; 203:3883-3892. [PMID: 34009446 DOI: 10.1007/s00203-021-02371-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/22/2021] [Accepted: 05/08/2021] [Indexed: 11/26/2022]
Abstract
Bacteria belonging to the genus Herbaspirillum are found in many different ecological niches. Some species are typically endophytic, while others were reported as free-living organisms that occupy various environments. Also, opportunistic herbaspirilli have been found infecting humans affected by several diseases. We have analyzed the production of exopolysaccharides (EPS) by Herbaspirillum strains isolated from different sources and with distinct ecological characteristics. The monosaccharide composition was determined for the EPS obtained for selected strains including free-living, plant-associated and clinical isolates, and the relationship with the ecological niches occupied by Herbaspirillum spp. is proposed.
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Affiliation(s)
- Valquíria D C Antunes
- Department of Biochemistry and Molecular Biology, Setor de Ciências Biológicas-Centro Politécnico, Universidade Federal do Paraná , R. Francisco H. dos Santos, 100 , PO Box 19046, Curitiba, PR, 81531-980, Brazil
| | - Daniela Freitag
- Department of Biochemistry and Molecular Biology, Setor de Ciências Biológicas-Centro Politécnico, Universidade Federal do Paraná , R. Francisco H. dos Santos, 100 , PO Box 19046, Curitiba, PR, 81531-980, Brazil
| | - Rodrigo V Serrato
- Department of Biochemistry and Molecular Biology, Setor de Ciências Biológicas-Centro Politécnico, Universidade Federal do Paraná , R. Francisco H. dos Santos, 100 , PO Box 19046, Curitiba, PR, 81531-980, Brazil.
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14
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Raimi A, Adeleke R. Bioprospecting of endophytic microorganisms for bioactive compounds of therapeutic importance. Arch Microbiol 2021; 203:1917-1942. [PMID: 33677637 DOI: 10.1007/s00203-021-02256-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/27/2021] [Accepted: 02/18/2021] [Indexed: 01/09/2023]
Abstract
Presently, several drug discovery investigations on therapeutic management of human health are aimed at bioprospecting for microorganisms, especially endophytic microbes of biotechnological importance. This review investigates the benefits of endophytes, especially in producing bioactive compounds useful in modern medicine by systematically reviewing published data from 12 databases. Only experimental studies investigating either or both bacterial and fungal endophytes and within the scope of this review were selected. The published data from the last 2 decades (2000-2019) revealed diverse endophytes associated with different plants produce a broad spectrum of bioactive compounds with therapeutic benefits. Notably, antibacterial, followed by anticancer and antifungal activities, were mostly reported. Only three studies investigated the anti-plasmodial activity. The variation observed in the synthesis of bioactive compounds amongst endophytes varied with host type, endophyte species, and cultivation medium. Fungal endophytes were more investigated than bacterial endophytes, with both endophytes having species diversity amongst literature. The endophytes were predominantly from medicinal plants and belonged to either Ascomycota (fungi) or Proteobacteria and Firmicutes (bacteria). This review presents excellent prospects of harnessing endophytes and their unique bioactive compounds in developing novel and effective compounds of medicinal importance.
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Affiliation(s)
- Adekunle Raimi
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa
| | - Rasheed Adeleke
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa.
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15
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Sharaf MH, El-Sherbiny GM, Moghannem SA, Abdelmonem M, Elsehemy IA, Metwaly AM, Kalaba MH. New combination approaches to combat methicillin-resistant Staphylococcus aureus (MRSA). Sci Rep 2021; 11:4240. [PMID: 33608582 PMCID: PMC7896049 DOI: 10.1038/s41598-021-82550-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 01/21/2021] [Indexed: 01/27/2023] Open
Abstract
The herbal products proved to be more promising antimicrobials even though their antimicrobial activity is milder than commercially available antibiotics. Moreover, herbal drugs may act synergistically with antibiotics to kill microbes. In this study, we aimed to enhance the activity of penicillin against MRSA through combination with the active saponin fraction isolated from the Zygophyllum album plant. Three different types of metabolites (saponins, sterols, and phenolics) have been extracted from Zygophyllum album with ethanol and purified using different chromatographic techniques. The antibacterial activity of crude extract and the separated metabolites were checked against MRSA isolates, Saponin fraction (ZA-S) was only the active one followed by the crude extract. Therefore, the compounds in this fraction were identified using ultra-high-performance liquid chromatography connected to quadrupole time-of-flight mass spectrometry (UHPLC/QTOF-MS) operated in positive and negative ionization modes. UHPLC/QTOF-MS revealed the presence of major six ursane-type tritepenoidal saponins (Quinovic acid, Quinovic acid 3β-O-β-D-quinovopyranoside, Zygophylloside C, Zygophylloside G, Zygophylloside K and Ursolic acid), in addition to Oleanolic acid. Interaction studies between saponin fraction and penicillin against MRSA were performed through the checkerboard method and time-kill assay. According to checkerboard results, only three combinations showed a fractional inhibitory concentration index less than 0.5 at concentrations of (62.5 + 312.5, 62.5 + 156.25, and 62.5 + 78.125 of penicillin and ZA-S, respectively). Time kill assay results showed that the highest reduction in log10 colony-forming unit (CFU)/ml of initial inoculum of MRSA after 24 h occurred by 3.7 at concentrations of 62.5 + 312.5 (µg/µg)/ml of penicillin and ZA-S, respectively. Thus, the combination between saponin fraction of Zygophyllum album and penicillin with these concentrations could be a potential agent against MRSA that can serve as possible model for new antibacterial drug.
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Affiliation(s)
- Mohamed H Sharaf
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt
| | - Gamal M El-Sherbiny
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt.
| | - Saad A Moghannem
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt
| | | | - Islam A Elsehemy
- Chemistry of Natural and Microbial Products, National Research Centre, Giza, Egypt
| | - Ahmed M Metwaly
- Pharmacognosy and Medicinal Plants Department, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Mohamed H Kalaba
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt
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16
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WoldemariamYohannes K, Wan Z, Yu Q, Li H, Wei X, Liu Y, Wang J, Sun B. Prebiotic, Probiotic, Antimicrobial, and Functional Food Applications of Bacillus amyloliquefaciens. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:14709-14727. [PMID: 33280382 DOI: 10.1021/acs.jafc.0c06396] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Bacillus amyloliquefaciens belongs to the genus Bacillus and family Baciliaceae. It is ubiquitously found in food, plants, animals, soil, and in different environments. In this review, the application of B. amyloliquefaciens in probiotic and prebiotic microbes in fermentation, synthesis, and hydrolysis of food compounds is discussed as well as further insights into its potential application and gaps. B. amyloliquefaciens is also a potential microbe in the synthesis of bioactive compounds including peptides and exopolysaccharides. In addition, it can synthesize antimicrobial compounds (e.g., Fengycin, and Bacillomycin Lb), which makes its novelty in the food sector greater. Moreover, it imparts and improves the functional, sensory, and shelf life of the end products. The hydrolysis of complex compounds including insoluble proteins, carbohydrates, fibers, hemicellulose, and lignans also shows that B. amyloliquefaciens is a multifunctional and potential microbe which can be applied in the food industry and in functional food processing.
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Affiliation(s)
- Kalekristos WoldemariamYohannes
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Zhen Wan
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Qinglin Yu
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Hongyan Li
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Xuetuan Wei
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yingli Liu
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Jing Wang
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Baoguo Sun
- China-Canada Joint Lab of Food Nutrition and Health (Beijing), Beijing Advanced Innovation Center for Food Nutrition and Human Health (BTBU), Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing 100048, China
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17
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Ling Y, Tang Y, Xu Y, Zhang Q, Zhang C, Zhang Y, Chen Y, Yang C, Zeng H, Guo S, Li L, Ding L, Zhang L, Jiang D, Zhao J, Luo M. Rapid Screening and Identification of Chemical Constituents From Ophiopogon japonicus by High-Performance Liquid Chromatography Coupled to Electrospray Ionization and Quadrupole Time-of-Flight Mass Spectrometry. J Chromatogr Sci 2020; 58:641-650. [PMID: 32613225 DOI: 10.1093/chromsci/bmaa029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Indexed: 11/13/2022]
Abstract
Ophiopogon japonicus (Thunb.) Ker-Gawl (Liliaceae), which is named as "Maidong" in China, is widely used in traditional Chinese medicine for treating fever, cough, inflammation, epistaxis, constipation, respiratory disease and gastrointestinal disorders. However, the systematic analysis of chemical constituents of O. japonicus has not been well established because of the complexity and trace. In this paper, an effective and reliable high-performance liquid chromatography coupled to electrospray ionization and quadrupole time-of-flight mass spectrometry method was successfully developed to separate and identify the chemical constituents from O. japonicus. As a result, a total of 30 compounds including steroidal saponins, homoisoflavonoids, allylbenzene, cholest and cryptomeridiol were screened or tentatively identified. Of them, three new steroidal saponins were found and tentatively characterized in O. japonicus. This study provides a meaningful material basis for further quality control and pharmacological research.
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Affiliation(s)
- Yun Ling
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Yihua Tang
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Yuanyuan Xu
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Qing Zhang
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Chao Zhang
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Yinyu Zhang
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Youyan Chen
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Chaoqing Yang
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Huayan Zeng
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Shufen Guo
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Li Li
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Li Ding
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Lei Zhang
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Dengzhao Jiang
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Jianguo Zhao
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
| | - Mingli Luo
- Department of Pharmaceutical and Life Sciences, Jiujiang University, Jiujiang 332005, People's Republic of China
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Zadeh Hosseingholi E, Neghabi N, Molavi G, Gheibi Hayat SM, Shahriarpour H. In silico identification and characterization of antineoplastic asparaginase enzyme from endophytic bacteria. IUBMB Life 2020; 72:991-1000. [DOI: 10.1002/iub.2237] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/10/2020] [Indexed: 12/24/2022]
Affiliation(s)
| | - Neda Neghabi
- Department of Biology, Faculty of Basic SciencesAzarbaijan Shahid Madani University Tabriz Iran
| | - Ghader Molavi
- Drug Applied Research CenterTabriz University of Medical Sciences Tabriz Iran
- Department of Molecular Medicine, Faculty of Advanced Medical SciencesTabriz University of Medical Sciences Tabriz Iran
| | | | - Hamed Shahriarpour
- Department of Biology, Faculty of Basic SciencesAzarbaijan Shahid Madani University Tabriz Iran
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19
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Farag MM, Moghannem SA, Shehabeldine AM, Azab MS. Antitumor effect of exopolysaccharide produced by Bacillus mycoides. Microb Pathog 2020; 140:103947. [DOI: 10.1016/j.micpath.2019.103947] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 12/23/2022]
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Carboxymethylated Sulfated Heteroexopolysaccharide from a Haloarchaeal Strain as Potential Biomolecule for Harmless Adjuvant Therapy in Cancer Treatment. J CHEM-NY 2020. [DOI: 10.1155/2020/8907958] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
This study explored the possible use of a microbial carboxymethylated sulfated heteroexopolysaccharide (CS-hEPS) as a potential anticancer agent. The investigation was carried out through antioxidant, antifatigue, and antiproliferative activities. Antioxidant potential including scavenging DPPH and hydroxyl radical activities and reducing power was evaluated. Antifatigue activity was determined by assessing the endurance of mice using the forced swimming test. Following 30 days of CS-hEPS oral treatment at different doses, biochemical parameters related to fatigue such as lactic dehydrogenase (LDH), serum urea nitrogen (SUN), and hepatic glycogen (HG) contents were measured. Antitumor activities were investigated against human cancer liver and myelogenous leukemia cells. Results showed that CS-hEPS possesses notable antioxidant, antifatigue, and antitumor effects. CS-hEPS significantly inhibited the proliferation of leukemia (86.6 ± 0.32%) and cancer liver (58.6 ± 0.43%) cells. CS-hEPS are promising natural antioxidant, antifatigue, and antitumor harmless adjuvant materials that could be applied in human cancer therapy.
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21
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Zhang XG, Ma GY, Kou F, Liu WJ, Sun QY, Guo GJ, Ma XD, Guo SJ, Jian-Ning Z. Reynoutria Japonica from Traditional Chinese Medicine: A Source of Competitive Adenosine Deaminase Inhibitors for Anticancer. Comb Chem High Throughput Screen 2020; 22:113-122. [PMID: 30987561 DOI: 10.2174/1386207322666190415100618] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 02/15/2019] [Accepted: 03/29/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Adenosine deaminase (ADA) is an important enzyme in purine metabolism and is known as a potential therapeutic target for the treatment of lymphoproliferative disorders and cancer. Traditional Chinese Herbal Medicine (TCHM) is widely used alone or in combination with chemotherapy to treat cancer, due to its ability to deliver a broad variety of bioactive secondary metabolites as promising sources of novel organic natural agents. OBJECTIVE In the present study, 29 varieties of medicinal plants were screened for the presence of ADA inhibitors. RESULTS Extracts from Reynoutria japonica, Glycyrrhiza uralensis, Lithospermum erythrorhizon, Magnolia officinalis, Gardenia jasminoides, Stephania tetrandra, Commiphora myrrha, Raphanus sativus and Corydalis yanhusuo demonstrated strong ADA inhibition with rates greater than 50%. However, Reynoutria japonica possessed the highest ADA inhibitory activity at 95.26% and so was used in our study for isolating the ADA inhibitor to be further studied. Eight compounds were obtained and their structures were identified. The compound H1 had strong ADA inhibitory activity and was deduced to be emodin by 1H and 13C-NMR spectroscopic analysis with an IC50 of 0.629 mM. The molecular docking data showed that emodin could bind tightly to the active site of ADA. Our results demonstrated that emodin displayed a new biological activity which is ADA inhibitory activity with high cytotoxic activity against K562 leukemia cells. The bioactivity of cordycepin was significantly increased when used in combination with emodin. CONCLUSION Emodin may represent a good candidate anti-cancer therapy and adenosine protective agent.
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Affiliation(s)
- Xin-Guo Zhang
- School of Life Science and Engineering, Key Laboratory of Drug Screening and Deep Processing for Traditional Chinese and Tibetan Medicine of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
| | - Guo-Yan Ma
- School of Life Science and Engineering, Key Laboratory of Drug Screening and Deep Processing for Traditional Chinese and Tibetan Medicine of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
| | - Fei Kou
- School of Life Science and Engineering, Key Laboratory of Drug Screening and Deep Processing for Traditional Chinese and Tibetan Medicine of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
| | - Wen-Jie Liu
- School of Life Science and Engineering, Key Laboratory of Drug Screening and Deep Processing for Traditional Chinese and Tibetan Medicine of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
| | - Qiao-Yun Sun
- School of Life Science and Engineering, Key Laboratory of Drug Screening and Deep Processing for Traditional Chinese and Tibetan Medicine of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
| | - Guang-Jun Guo
- School of Life Science and Engineering, Key Laboratory of Drug Screening and Deep Processing for Traditional Chinese and Tibetan Medicine of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
| | - Xiao-Di Ma
- School of Life Science and Engineering, Key Laboratory of Drug Screening and Deep Processing for Traditional Chinese and Tibetan Medicine of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
| | - Si-Jia Guo
- School of Life Science and Engineering, Key Laboratory of Drug Screening and Deep Processing for Traditional Chinese and Tibetan Medicine of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China
| | - Zhu Jian-Ning
- Drug Evaluation and Certification Center of Gansu Food and Drug Administration, Lanzhou 730060, China
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The anti-tumor activity of exopolysaccharides from Pseudomonas strains against HT-29 colorectal cancer cell line. Int J Biol Macromol 2020; 149:1072-1076. [PMID: 32004609 DOI: 10.1016/j.ijbiomac.2020.01.268] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 01/27/2020] [Accepted: 01/27/2020] [Indexed: 12/16/2022]
Abstract
The anti-tumor activity of extracted exopolysaccharides (EPSs) (without any side effects) of Pseudomonas aeruginosa on HT-29 colorectal cancer cell line has not been previously investigated. The extraction and partial characterization of EPS from the strains of P. aeruginosa including A (CIP A22(PTCC1310)), and B (a clinical strain) were performed. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and sulphorhodamine B (SRB) assays as well as microscopy were used to estimate the cell viability and morphological changes in HT-29 cells subjected to EPS at 0, 7.6, 15.8, 31.2, 62.5 and 125 μg/ml. The apoptotic effects of EPS were also examined by flow cytometry. The EPSs were found to be cytotoxic against HT-29 cells with IC50 values at 44.8 (EPS-A) and 12.7 (EPS-B) μg/ml. The counteraction of 125 μg/ml of EPS-A (87.5 and 56.7%) and EPS-B (86.7 and 59.2%) resulted in the highest repressive rates using the MTT and SRB assays, respectively. Flow cytometric results showed that EPS-A and EPS-B could induce apoptosis (33% and 39%) and necrosis (65% and 59%). The extracted EPSs of both bacterial strains can be used as natural, effective, efficient and anti-cancer drugs. However, more characterization at molecular and structural levels in this respect may be required.
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Agricultural and Other Biotechnological Applications Resulting from Trophic Plant-Endophyte Interactions. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9120779] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Endophytic microbiota plays a role not only in supplying plants with the basic nutrients indispensable for their growth, but also helps them in the mechanisms of adaptation to various environmental stresses (i.e., salinity, drought), which is important in the aspect of crop yields. From the agricultural and biotechnological points of view, the knowledge of endophytes and their roles in increasing crop yields, plant resistance to diseases, and helping to survive environmental stress is extremely desirable. This paper reviews some of the beneficial plant–microbe interactions that might be potentially used in both agriculture (plant growth stimulation effect, adaptation of host organisms in salinity and drought conditions, and support of defense mechanisms in plants), and in biotechnology (bioactive metabolites, application of endophytes for bioremediation and biotransformation processes, and production of biofertilizers and biopreparations). Importantly, relatively recent reports on endophytes from the last 10 years are summarized in this paper.
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Abid Y, Azabou S, Joulak I, Casillo A, Lanzetta R, Corsaro MM, Gharsallaoui A, Attia H. Potential biotechnological properties of an exopolysaccharide produced by newly isolated Bacillus tequilensis-GM from spontaneously fermented goat milk. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.02.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Ashu EE, Xu J, Yuan ZC. Bacteria in Cancer Therapeutics: A Framework for Effective Therapeutic Bacterial Screening and Identification. J Cancer 2019; 10:1781-1793. [PMID: 31205534 PMCID: PMC6547982 DOI: 10.7150/jca.31699] [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: 11/21/2018] [Accepted: 02/21/2019] [Indexed: 12/11/2022] Open
Abstract
By 2030, the global incidence of cancer is expected to increase by approximately 50%. However, most conventional therapies still lack cancer selectivity, which can have severe unintended side effects on healthy body tissue. Despite being an unconventional and contentious therapy, the last two decades have seen a significant renaissance of bacterium-mediated cancer therapy (BMCT). Although promising, most present-day therapeutic bacterial candidates have not shown satisfactory efficacy, effectiveness, or safety. Furthermore, therapeutic bacterial candidates are available to only a few of the approximately 200 existing cancer types. Excitingly, the recent surge in BMCT has piqued the interest of non-BMCT microbiologists. To help advance these interests, in this paper we reviewed important aspects of cancer, present-day cancer treatments, and historical aspects of BMCT. Here, we provided a four-step framework that can be used in screening and identifying bacteria with cancer therapeutic potential, including those that are uncultivable. Systematic methodologies such as the ones suggested here could prove valuable to new BMCT researchers, including experienced non-BMCT researchers in possession of extensive knowledge and resources of bacterial genomics. Lastly, our analyses highlight the need to establish and standardize quantitative methods that can be used to identify and compare bacteria with important cancer therapeutic traits.
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Affiliation(s)
- Eta E Ashu
- Department of Microbiology & Immunology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
| | - Jianping Xu
- Department of Biology, McMaster University, Hamilton, Ontario, Canada
| | - Ze-Chun Yuan
- Department of Microbiology & Immunology, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,London Research and Development Centre, Agriculture and Agri-Food Canada, London, Ontario, Canada
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Ek-Ramos MJ, Gomez-Flores R, Orozco-Flores AA, Rodríguez-Padilla C, González-Ochoa G, Tamez-Guerra P. Bioactive Products From Plant-Endophytic Gram-Positive Bacteria. Front Microbiol 2019; 10:463. [PMID: 30984118 PMCID: PMC6449470 DOI: 10.3389/fmicb.2019.00463] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 02/21/2019] [Indexed: 11/13/2022] Open
Abstract
Endophytes constitute plant-colonizing microorganisms in a mutualistic symbiosis relationship. They are found in most ecosystems reducing plant crops' biotic and abiotic stressors by stimulating immune responses, excluding plant pathogens by niche competition, and participating in antioxidant activities and phenylpropanoid metabolism, whose activation produces plant defense, structural support, and survival molecules. In fact, metabolomic studies have demonstrated that endophyte genes associated to specific metabolites are involved in plant growth promotion (PGP) by stimulating plant hormones production such as auxins and gibberellins or as plant protective agents against microbial pathogens, cancer, and insect pests, but eco-friendly and eco-safe. A number of metabolites of Gram-positive endophytes isolated from agriculture, forest, mangrove, and medicinal plants, mainly related to the Firmicutes phyla, possess distinctive biocontrol and plant growth-promoting activities. In general, Actinobacteria and Bacillus endophytes produce aromatic compounds, lipopeptides, plant hormones, polysaccharides, and several enzymes linked to phenylpropanoid metabolism, thus representing high potential for PGP and crop management strategies. Furthermore, Actinobacteria have been shown to produce metabolites with antimicrobial and antitumor activities, useful in agriculture, medicine, and veterinary areas. The great endophytes diversity, their metabolites production, and their adaptation to stress conditions make them a suitable and unlimited source of novel metabolites, whose application could reduce agrochemicals usage in food and drugs production.
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Affiliation(s)
- María J. Ek-Ramos
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Mexico
| | - Ricardo Gomez-Flores
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Mexico
| | - Alonso A. Orozco-Flores
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Mexico
| | - Cristina Rodríguez-Padilla
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Mexico
| | - Guadalupe González-Ochoa
- Departamento de Ciencias Químico Biológicas, División de Ciencias e Ingeniería, Universidad de Sonora, Navojoa, Mexico
| | - Patricia Tamez-Guerra
- Departamento de Microbiología e Inmunología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza, Mexico
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Uche-Okereafor N, Sebola T, Tapfuma K, Mekuto L, Green E, Mavumengwana V. Antibacterial Activities of Crude Secondary Metabolite Extracts from Pantoea Species Obtained from the Stem of Solanum mauritianum and Their Effects on Two Cancer Cell Lines. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E602. [PMID: 30791418 PMCID: PMC6406648 DOI: 10.3390/ijerph16040602] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 02/07/2019] [Accepted: 02/14/2019] [Indexed: 12/11/2022]
Abstract
Endophytes are microorganisms that are perceived as non-pathogenic symbionts found inside plants since they cause no symptoms of disease on the host plant. Soil conditions and geography among other factors contribute to the type(s) of endophytes isolated from plants. Our research interest is the antibacterial activity of secondary metabolite crude extracts from the medicinal plant Solanum mauritianum and its bacterial endophytes. Fresh, healthy stems of S. mauritianum were collected, washed, surface sterilized, macerated in PBS, inoculated in the nutrient agar plates, and incubated for 5 days at 30 °C. Amplification and sequencing of the 16S rRNA gene was applied to identify the isolated bacterial endophytes. These endophytes were then grown in nutrient broth for 7⁻14 days, after which sterilized Amberlite® XAD7HP 20⁻60 mesh (Merck KGaA, Darmstadt, Germany) resin was added to each culture to adsorb the secondary metabolites, which were later extracted using ethyl acetate. Concentrated crude extracts from each bacterial endophyte were tested for antibacterial activity against 11 pathogenic bacteria and two human cancer cell lines. In this study, a total of three bacterial endophytes of the Pantoea genus were identified from the stem of S. mauritianum. The antibacterial test showed that crude secondary metabolites of the endophytes and stem of S. mauritianum possessed antibacterial properties against pathogenic microbes such as Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, and Pseudomonas aeruginosa, with concentrations showing inhibition ranging from 0.0625 to 8.0000 mg/mL. The anticancer analysis showed an increase in cell proliferation when A549 lung carcinoma and UMG87 glioblastoma cell lines were treated with both the plant and endophytes' crude extracts. As far as we know, this is the first study of its kind on Solanum mauritianum in South Africa showing S. mauritianum endophytes having activity against some of the common human pathogenic organisms.
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Affiliation(s)
- Nkemdinma Uche-Okereafor
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, PO Box 17011, Doornfontein, Johannesburg 2028, South Africa.
| | - Tendani Sebola
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, PO Box 17011, Doornfontein, Johannesburg 2028, South Africa.
| | - Kudzanai Tapfuma
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, PO Box 17011, Doornfontein, Johannesburg 2028, South Africa.
| | - Lukhanyo Mekuto
- Department of Chemical Engineering, Faculty of Engineering and the Built Environment, University of Johannesburg, PO Box 17011, Doornfontein, Johannesburg 2028, South Africa.
| | - Ezekiel Green
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, PO Box 17011, Doornfontein, Johannesburg 2028, South Africa.
| | - Vuyo Mavumengwana
- South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Department of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa.
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Immune enhancement activity of a novel polysaccharide produced by Dendrobium officinale endophytic fungus Fusarium solani DO7. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.12.038] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Hamidi M, Mirzaei R, Delattre C, Khanaki K, Pierre G, Gardarin C, Petit E, Karimitabar F, Faezi S. Characterization of a new exopolysaccharide produced by Halorubrum sp. TBZ112 and evaluation of its anti-proliferative effect on gastric cancer cells. 3 Biotech 2019; 9:1. [PMID: 30555767 DOI: 10.1007/s13205-018-1515-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 11/13/2018] [Indexed: 11/28/2022] Open
Abstract
In the present study, we aimed to extract, purify, analyze monosaccharide composition of exopolysaccharide (EPS) produced by Halorubrum sp. TBZ112 (KCTC 4203 and IBRC-M 10773) and also to evaluate its possible antiproliferative activity against human gastric cancer (MKN-45) cell line and its biocompatibility effect on normal cells using human dermal fibroblast (HDF) cell line. Average molecular weight and monosaccharide composition were determined by high-pressure size exclusion chromatography (HPSEC) with multi-angle laser light scattering (MALLS) and high-pressure anion exchange chromatography (HPAEC), respectively. Fourier transform infrared (FTIR) spectroscopy was used for the partial characterization of the EPS. The EPS effect on the cell proliferation and viability of MKN-45 and HDF cells was assessed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and trypan blue dye exclusion, respectively. Strain TBZ112 excreted 480 mg.l-1 of the EPS under optimal growth conditions. The EPS had a molecular weight of 5.052 kDa and was a heteropolysaccharide containing ten moieties mainly composed of mannose (19.95%), glucosamine (15.55%), galacturonic acid (15.43%), arabinose (12.24%), and glucuronic acid (12.05%). No significant difference of the EPS treatments on the proliferation activity of MKN-45 and HDF cells were observed (P > 0.05). For the first time, the EPS from Halorubrum sp. TBZ112, an extremely halophilic archaeon related to Halorubrum genus, was isolated and chemically characterized. The EPS from Halorubrum sp. TBZ112 possesses a relatively low molecular weight and might be applied as a biocompatible compound. More investigations are needed to determine other biological activities of the EPS along with further details of its chemical structure.
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Affiliation(s)
- Masoud Hamidi
- 1Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Rasool Mirzaei
- 1Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Cédric Delattre
- 2Institut Pascal UMR CNRS 6602, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Korosh Khanaki
- 1Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Guillaume Pierre
- 2Institut Pascal UMR CNRS 6602, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Christine Gardarin
- 2Institut Pascal UMR CNRS 6602, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Emmanuel Petit
- 3EA3900 BIOPI, Université de Picardie Jules Verne, Avenue des facultés, Le Bailly, 80025 Amiens cedex, France
| | - Fatemeh Karimitabar
- 1Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Sobhan Faezi
- 1Medical Biotechnology Research Center, School of Paramedicine, Guilan University of Medical Sciences, Rasht, Iran
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Isolation and diversity of culturable rhizobacteria associated with economically important crops and uncultivated plants in Québec, Canada. Syst Appl Microbiol 2018; 41:629-640. [DOI: 10.1016/j.syapm.2018.06.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 06/26/2018] [Indexed: 11/19/2022]
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Shahzad R, Latif Khan A, Ali L, Bilal S, Imran M, Choi KS, Al-Harrasi A, Lee IJ. Characterization of New Bioactive Enzyme Inhibitors from Endophytic Bacillus amyloliquefaciens RWL-1. Molecules 2018; 23:molecules23010114. [PMID: 29304029 PMCID: PMC6017712 DOI: 10.3390/molecules23010114] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 01/03/2018] [Accepted: 01/04/2018] [Indexed: 12/28/2022] Open
Abstract
Endophytic bacteria are known to produce a wide array of bioactive secondary metabolites with beneficial effects on human health. In the current study, a novel endophytic bacterial strain, Bacillus amyloliquefaciens RWL-1, was isolated from the seeds of Oryza sativa. Initially, the crude extract of RWL-1 was assessed for potential biological effects of enzyme inhibition and cytotoxicity and was found to exhibit a broad spectrum inhibition for α-glucosidase (37 ± 0.09%) and urease (49.4 ± 0.53%). The screening results were followed by bioassay-guided isolation of secondary metabolite(s) from RWL-1. Extensive chromatographic and spectrophotometry analyses revealed the presence of compound 1 (S)-2-hydroxy-N-((S)-1-((S)-8-hydroxy-1-oxoisochroman-3-yl)-3-methylbutyl)-2-((S)-5-oxo-2,5-dihydrofuran-2-yl)acetamide. Further bioassays of compound 1 showed significant inhibition of α-glucosidase (52.98 ± 0.8%) and urease (51.27 ± 1.0%), compared with positive control values of 79.14 ± 1.9% and 88.24 ± 2.2%, and negative controls (0.08 ± 0.1% and 0.05 ± 0.01%), respectively. The current study suggests that bacterial endophytes are a rich source of novel bioactive compounds with high therapeutic value.
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Affiliation(s)
- Raheem Shahzad
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
| | - Abdul Latif Khan
- UoN Chair of Oman's Medicinal Plants & Marine Natural Products, University of Nizwa, Nizwa 616, Oman.
| | - Liaqat Ali
- Department of Chemistry, University of Sargodha, Sub-Campus Mianwali, Mianwali 42200, Pakistan.
| | - Saqib Bilal
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
| | - Muhammad Imran
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
| | - Kyung-Sook Choi
- School of Agricultural Civil & Bio-Industrial Machinery Engineering, Kyungpook National University, Daegu 41566, Korea.
| | - Ahmed Al-Harrasi
- UoN Chair of Oman's Medicinal Plants & Marine Natural Products, University of Nizwa, Nizwa 616, Oman.
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
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Zhang XG, Liu JW, Tang P, Liu ZY, Guo GJ, Sun QY, Yin JJ. Identification of a New Uncompetitive Inhibitor of Adenosine Deaminase from Endophyte Aspergillus niger sp. Curr Microbiol 2017; 75:565-573. [PMID: 29243069 DOI: 10.1007/s00284-017-1418-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 12/08/2017] [Indexed: 11/28/2022]
Abstract
Adenosine deaminase (ADA) is an enzyme widely distributed from bacteria to humans. ADA is known as a potential therapeutic target for the treatment of lymphoproliferative disorders and cancer. Endophytes are endosymbionts, often bacteria or fungi, which live within plant tissues and internal organs or intercellular space. Endophytes have a broad variety of bioactive metabolites that are used for the identification of novel natural compounds. Here, 54 morphologically distinct endophyte strains were isolated from six plants such as Peganum harmala Linn., Rheum officinale Baill., Gentiana macrophylla Pall., Radix stephaniae tetrandrae, Myrrha, and Equisetum hyemale Linn. The isolated strains were used for the search of ADA inhibitors that resulted in the identification of the strain with the highest inhibition activity, Aspergillus niger sp. Four compounds were isolated from this strain using three-step chromatography procedure, and compound 2 was determined as the compound with the highest inhibition activity of ADA. Based on the results of 1H and 13C NMR spectroscopies, compound 2 was identified as 3-(4-nitrophenyl)-5-phenyl isoxazole. We showed that compound 2 was a new uncompetitive inhibitor of ADA with high cytotoxic effect on HepG2 and SMCC-7721 cells (the IC50 values were 0.347 and 0.380 mM, respectively). These results suggest that endophyte strains serve as promising sources for the identification of ADA inhibitors, and compound 2 could be an effective drug in the cancer treatment.
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Affiliation(s)
- Xin-Guo Zhang
- School of Life Science and Engineering, Key Laboratory of Herbal-Tebitan Drug Screening and Deep Processing of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, China.
| | - Jin-Wen Liu
- School of Life Science and Engineering, Key Laboratory of Herbal-Tebitan Drug Screening and Deep Processing of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Peng Tang
- School of Life Science and Engineering, Key Laboratory of Herbal-Tebitan Drug Screening and Deep Processing of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Zi-Yu Liu
- School of Life Science and Engineering, Key Laboratory of Herbal-Tebitan Drug Screening and Deep Processing of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Guang-Jun Guo
- School of Life Science and Engineering, Key Laboratory of Herbal-Tebitan Drug Screening and Deep Processing of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Qiao-Yun Sun
- School of Life Science and Engineering, Key Laboratory of Herbal-Tebitan Drug Screening and Deep Processing of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Jian-Jun Yin
- School of Life Science and Engineering, Key Laboratory of Herbal-Tebitan Drug Screening and Deep Processing of Gansu Province, Lanzhou University of Technology, Lanzhou, 730050, China.
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Singh M, Kumar A, Singh R, Pandey KD. Endophytic bacteria: a new source of bioactive compounds. 3 Biotech 2017; 7:315. [PMID: 28955612 DOI: 10.1007/s13205-017-0942-z] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 09/05/2017] [Indexed: 12/20/2022] Open
Abstract
In recent years, bioactive compounds are in high demand in the pharmaceuticals and naturopathy, due to their health benefits to human and plants. Microorganisms synthesize these compounds and some enzymes either alone or in association with plants. Microbes residing inside the plant tissues, known as endophytes, also produce an array of these compounds. Endophytic actinomycetes act as a promising resource of biotechnologically valuable bioactive compounds and secondary metabolites. Endophytic Streptomyces sp. produced some novel antibiotics which are effective against multi-drug-resistant bacteria Antimicrobial agents produced by endophytes are eco-friendly, toxic to pathogens and do not harm the human. Endophytic inoculation of the plants modulates the synthesis of bioactive compounds with high pharmaceutical properties besides promoting growth of the plants. Hydrolases, the extracellular enzymes, produced by endophytic bacteria, help the plants to establish systemic resistance against pathogens invasion. Phytohormones produced by endophytes play an essential role in plant development and drought resistance management. The high diversity of endophytes and their adaptation to various environmental stresses seem to be an untapped source of new secondary metabolites. The present review summarizes the role of endophytic bacteria in synthesis and modulation of bioactive compounds.
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Abdelnasser SM, M Yahya SM, Mohamed WF, Asker MMS, Abu Shady HM, Mahmoud MG, Gadallah MA. Antitumor Exopolysaccharides Derived from Novel Marine Bacillus: Isolation, Characterization Aspect and Biological Activity. Asian Pac J Cancer Prev 2017; 18:1847-1854. [PMID: 28749119 PMCID: PMC5648389 DOI: 10.22034/apjcp.2017.18.7.1847] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Objective: Exopolysaccharides gained attention as new source for cancer treatment as recent treatments cause side
effects and multidrug resistance. Polysaccharides containing sulfur and uronic acids exhibited antioxidant activity, by
restoring cell redox regulation, thus inhibiting cell proliferation and cancer formation. Following this context, our study
was performed to assess the cytotoxic activity of exopolysaccharides produced by novel Egyptian marine bacterial
strains on HepG2 cells. Methods: Bacteria were isolated, purified and cultured through routine microbiological
techniques. 16S rRNA gene amplification and sequence analyses, Fourier Transform Infra-red (FTIR), Identification
of monosugars by HPLC molecular weight estimation, sulfur content determination and neutral red uptake assay were
utilized. Results: BLAST showed that the isolates were related to the Bacillus sp. FTIR analysis indicated that the
four EPSs under study contained sulfur as substituent functional group but with different percentage in each EPS.
The highest sulfur percentage (46%) appeared in the EPS-6 that was produced by Bacillus flexus isolated from the
Mediterranean Sea. HPLC showed that EPSs contained uronic acids which appeared as glucuronic and galacturonic acid
in the low molecular weight EPS-6 (4.296×104 g mol-1). Arabinose appeared besides the glucuronic and galacturonic
acid residues. EPS-6 showed the highest cytotoxicity, IC50 (218 μg ml-1) which could be correlated to the presence of
sulfure and uronic acids in its structure. Conclusion: The novel Firmicutes from the Egyptian saline habitat produced
EPSs of cytotoxic activity on hepatocellular carcinoma.
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Affiliation(s)
- Salma M Abdelnasser
- Department of Microbial Biotechnology, National Research Centre, Dokki, Giza, Egypt .
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Zhang H, Wang X, Li R, Sun X, Sun S, Li Q, Xu C. Preparation and Bioactivity of Exopolysaccharide from an Endophytic Fungus Chaetomium sp. of the Medicinal Plant Gynostemma Pentaphylla. Pharmacogn Mag 2017; 13:477-482. [PMID: 28839375 PMCID: PMC5551368 DOI: 10.4103/0973-1296.211033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 08/30/2016] [Indexed: 11/20/2022] Open
Abstract
Background: Many exopolysaccharides from the endophytes in medicinal plants possess various potential bioactivities. Materials and Methods: The endophytic fungus JY25 was isolated from the leave of the Chinese medicinal plant Gynostemma pentaphylla and identified as Chaetomium sp. by its phylogenetic and physiological analysis. One exopolysaccharide (EPS) fraction was isolated from the fermentation broth by ethanol precipitation and purified by gel filtration chromatography on Sepharose CL-6B. The molecular characteristics were examined by GC-MS, FT-IR, and multiangle laser light scattering (MALLS). Results: The monosaccharide composition analysis indicated that the purified EPS was mainly composed of glucose, mannose, arabinose, and galactose with the molecular ratio of 78.29: 8.99: 8.64: 4.08. FT-IR spectral analysis of the purified EPS revealed prominent characteristic groups, such as carbonyl bond, pyranose ring, and so on. The weight-average molar mass and the polydispersity ratio of the EPS were revealed to be 1.961×104 g/mol and 1.838, respectively. Furthermore, thermo gravimetric analysis (TGA) indicated that the degradation temperature of the purified EPS was 305° C. The purified EPS from the endophytic fungus Chaetomium sp. displayed antioxidant and antiproliferative activities. Conclusion: The results demonstrated that the EPS could be used as a healthful food and material source in pharmaceutical industries. SUMMARY An exopolysaccharides (EPS) with antioxidant and antiproliferative activities from an endophytic fungus Chaetomium sp. was reported.
Abbreviations used: ANOVA: Analysis of variance; DPPH: 2,2-diphenyl-1-picrylhydrazyl; EPS: Exopolysaccharide; FT-IR: Fourier transform infrared spectroscopy; GC-MS: Gas chromatography–mass spectrometry; Mw: Mass weight; MALLS: Multiangle laser light scattering; SEC: Size Exclusion Chomatography; SPSS: Statistical Package of the Social Science; TGA: Thermo gravimetric analysis; TFA: Trifluoroacetic acid.
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Affiliation(s)
- Huiru Zhang
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, P. R. China
| | - Xueqin Wang
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, P. R. China
| | - Ruifang Li
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, P. R. China
| | - Xincheng Sun
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, P. R. China
| | - Siwen Sun
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, P. R. China
| | - Qiang Li
- College of Bioengineering, Henan University of Technology, Zhengzhou, Henan, P. R. China
| | - Chunping Xu
- College of Food and Biological Engineering, Zhengzhou University of Light Industry, Zhengzhou, Henan, P. R. China
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Zhang XG, Liu ZY, Liu JW, Zeng YL, Guo GJ, Sun QY. Antitumor activity of a Rhodococcus sp. Lut0910 isolated from polluted soil. Tumour Biol 2017. [PMID: 28639891 DOI: 10.1177/1010428317711661] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The actinomycetes strain, lut0910, was isolated from polluted soil and identified as the Rhodococcus species with 99% similarity based on the sequence analysis of 16S recombinant DNA. The extract of this strain demonstrated in vivo and in vitro antitumor activity. The treatment of two human cancer cell lines, hepatocellular carcinoma HepG2 and cervical carcinoma Hela cells, with the lut0910 extract caused the delay in cell propagation in a dose-dependent manner with an IC50 of 73.39 and 33.09 µg/mL, respectively. Also, the oral administration of lut0910 extract to the mice with a solid tumor resulted in the inhibition of tumor growth in comparison with a placebo group. The thymus and spleen indexes were significantly increased in mice groups treated with the lut0910 extract. The histopathological changes of the tumor tissues showed that there were massive necrotic areas in the tumor tissues after treatment with different doses of the lut0910 extract. Our result would provide a new way and potent source for development of new anticancer agent from the polluted environment.
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Affiliation(s)
- Xin-Guo Zhang
- 1 School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China.,2 Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, P.R. China
| | - Zi-Yu Liu
- 1 School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China.,2 Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, P.R. China
| | - Jin-Wen Liu
- 1 School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China.,2 Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, P.R. China
| | - Yan-Long Zeng
- 1 School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China.,2 Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, P.R. China
| | - Guang-Jun Guo
- 1 School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China.,2 Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, P.R. China
| | - Qiao-Yun Sun
- 1 School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China.,2 Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, P.R. China
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Chen J, Yuan J, Zhou L, Zhu M, Shi Z, Song J, Xu Q, Yin G, Lv Y, Luo Y, Jia X, Feng L. Regulation of different components from Ophiopogon japonicus on autophagy in human lung adenocarcinoma A549Cells through PI3K/Akt/mTOR signaling pathway. Biomed Pharmacother 2017; 87:118-126. [DOI: 10.1016/j.biopha.2016.12.093] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 12/14/2016] [Accepted: 12/22/2016] [Indexed: 11/29/2022] Open
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Recent advances in endophytic exopolysaccharides: Production, structural characterization, physiological role and biological activity. Carbohydr Polym 2017; 157:1113-1124. [DOI: 10.1016/j.carbpol.2016.10.084] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 10/24/2016] [Accepted: 10/27/2016] [Indexed: 01/08/2023]
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Fouad H, Hongjie L, Yanmei D, Baoting Y, El-Shakh A, Abbas G, Jianchu M. Synthesis and characterization of silver nanoparticles using Bacillus amyloliquefaciens and Bacillus subtilis to control filarial vector Culex pipiens pallens and its antimicrobial activity. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:1369-1378. [PMID: 27855517 DOI: 10.1080/21691401.2016.1241793] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Culex pipiens pallens are the most common mosquito's vector in Asia. In order to protect the people from diseases, the anti-mosquito population is necessary that uses safe and new bio-pesticides such as bacteria-AgNPs. In our report, we used two kinds of bacteria to synthesize silver nanoparticles to examine the toxic effect on the larvae and pupae of Cx. pipiens pallens and also used as antimicrobial activity. The biosynthesis of AgNPs and its characterization was carried out by UV-Vis spectrophotometry, FTIR, TEM, SEM, and EDX. The larvicidal and pupicidal assays revealed that the lethal concentration LC50 values of Bacillus amyloliquefaciens-AgNPs were 0.72 ppm (I), 0.73 ppm (II), 0.69 ppm (III), 1.16 ppm (IV), and 4.18 (Pupae), while LC50 values of Bacillus subtilis-AgNPs were 0.60 ppm (I), 0.62 ppm (II), 0.21 ppm (III), 0.28 ppm (IV), and 3.46 ppm (Pupae) after 72 h of exposure. Antibacterial activity test of AgNPs reveals better results against rice pathogenic bacteria than bacteria alone. Thus, bacteria-mediated silver nanoparticles have a rapid effect on vector mosquito and microbial pathogen suggesting savings of energy and resources. Hence, bacteria-AgNPs may be used in the future as an effective weapon to control vector mosquito and harmful bacteria.
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Affiliation(s)
- Hatem Fouad
- a Ministry of Agriculture Key Laboratory of Agricultural Entomology , Institute of Insect Sciences, Zhejiang University , Zhejiang , PR China.,b Department of Field Crop Pests , Plant Protection Research Institute, Agricultural Research Centre , Cairo , Egypt
| | - Li Hongjie
- a Ministry of Agriculture Key Laboratory of Agricultural Entomology , Institute of Insect Sciences, Zhejiang University , Zhejiang , PR China
| | - Ding Yanmei
- a Ministry of Agriculture Key Laboratory of Agricultural Entomology , Institute of Insect Sciences, Zhejiang University , Zhejiang , PR China
| | - Yu Baoting
- a Ministry of Agriculture Key Laboratory of Agricultural Entomology , Institute of Insect Sciences, Zhejiang University , Zhejiang , PR China
| | - Ahmed El-Shakh
- c Department of Crop Protection , University of Bakht Alruda , Ad Douiem , White Nile State , Sudan
| | - Ghulam Abbas
- d Department of Chemical Engineering , University of Gujrat , Gujrat , Pakistan
| | - Mo Jianchu
- a Ministry of Agriculture Key Laboratory of Agricultural Entomology , Institute of Insect Sciences, Zhejiang University , Zhejiang , PR China
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40
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Exopolysaccharide-producing isolates from Thai milk kefir and their antioxidant activities. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2016.06.068] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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41
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Exopolysaccharides of Halophilic Microorganisms: An Overview. Ind Biotechnol (New Rochelle N Y) 2016. [DOI: 10.1201/b19347-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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42
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Priyanka P, Arun AB, Ashwini P, Rekha PD. Functional and cell proliferative properties of an exopolysaccharide produced by Nitratireductor sp. PRIM-31. Int J Biol Macromol 2016; 85:400-4. [PMID: 26772917 DOI: 10.1016/j.ijbiomac.2015.12.091] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 12/21/2015] [Accepted: 12/31/2015] [Indexed: 10/22/2022]
Abstract
Exopolysaccharides (EPS) produced by bacteria are important source of natural biomolecules with therapeutic applications. In this study EPS produced by a strain PRIM-31 isolated from seawater from south west coast of India identified by 16S rRNA gene sequencing as Nitratireductor sp. was investigated for its biotechnological applications. The isolate produced 650 mg L(-1) EPS under optimum growth conditions. The purified EPS contained 58.3% carbohydrates with 7.08% uronic acid containing sugars, functional groups such as sulfate (2.68%) and trace amounts of proteins (0.65%). Molecular weight of the EPS was 90 kDa and monosaccharide composition was arabinose, glucose, xylose, glucuronic acid and galactose (6.6: 3.5: 2.1: 1.3: 1). The EPS displayed antioxidant activity in terms of total antioxidant capacity, ferric reducing power, scavenging of DPPH (IC50 390 μg mL(-1)) and superoxide radicals (IC50 340 μg mL(-1)). Cell proliferative activity of the EPS was evidenced by significant improvement in human dermal fibroblast (HDF) proliferation compared to control. Further, significant improvement (41%) in HDF cell migration was observed in in vitro scratch assay with EPS treatment. The EPS also showed antiproliferative activity against glioblastoma cells with an IC50 of 234.04 μg mL(-1). These functional properties of the EPS prospect its biotechnological applications.
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Affiliation(s)
- P Priyanka
- Yenepoya Research Centre, Yenepoya University, Mangalore, India
| | - A B Arun
- Yenepoya Research Centre, Yenepoya University, Mangalore, India
| | - P Ashwini
- Yenepoya Research Centre, Yenepoya University, Mangalore, India
| | - P D Rekha
- Yenepoya Research Centre, Yenepoya University, Mangalore, India.
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Zang QQ, Zhang L, Gao N, Huang C. Ophiopogonin D inhibits cell proliferation, causes cell cycle arrest at G2/M, and induces apoptosis in human breast carcinoma MCF-7 cells. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2016; 14:51-9. [DOI: 10.1016/s2095-4964(16)60238-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Nutritional Composition,α-Glucosidase Inhibitory and Antioxidant Activities ofOphiopogon japonicusTubers. J CHEM-NY 2015. [DOI: 10.1155/2015/893074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Ophiopogon japonicustubers have been widely used as food and traditional Chinese medicine in China. However, their nutritional composition has not been fully reported yet. This study aimed to analyze the nutritional composition ofO. japonicustubers. Theα-glucosidase inhibitory and antioxidant activities of the extracts obtained fromO. japonicustubers were also evaluated byin vitroassays. The results indicated thatO. japonicustubers are rich in carbohydrates, proteins, minerals, and amino acids. Among four extracts, the n-butanol fraction (nBF) and chloroform/methanol extract (CME) ofO. japonicustubers had high amounts of total phenolic and flavonoid contents and exhibited goodα-glucosidase inhibitory and antioxidant activities. Theα-glucosidase inhibition of nBF was higher than acarbose. Overall,O. japonicustubers are full of nutritional compounds and have goodα-glucosidase inhibitory and antioxidant activities.
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Vignesh V, Sathiyanarayanan G, Sathishkumar G, Parthiban K, Sathish-Kumar K, Thirumurugan R. Formulation of iron oxide nanoparticles using exopolysaccharide: evaluation of their antibacterial and anticancer activities. RSC Adv 2015. [DOI: 10.1039/c5ra03134f] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Formulation of FeONPs using bacterial exopolysaccharide and their significance.
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Affiliation(s)
- Venkatasamy Vignesh
- Laboratory of Aquabiotics/Nanoscience
- Department of Animal Science
- School of Life Sciences
- Bharathidasan University
- Tiruchirappalli-620024
| | - Ganesan Sathiyanarayanan
- Department of Plant Science
- School of Life Sciences
- Bharathidasan University
- Tiruchirappalli-620024
- India
| | - Gnanasekar Sathishkumar
- Department of Biotechnology and Genetic Engineering
- School of Life Sciences
- Bharathidasan University
- Tiruchirappalli-620024
- India
| | - Karuppaiah Parthiban
- Laboratory of Aquabiotics/Nanoscience
- Department of Animal Science
- School of Life Sciences
- Bharathidasan University
- Tiruchirappalli-620024
| | | | - Ramasamy Thirumurugan
- Laboratory of Aquabiotics/Nanoscience
- Department of Animal Science
- School of Life Sciences
- Bharathidasan University
- Tiruchirappalli-620024
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Abdalla MA, Matasyoh JC. Endophytes as producers of peptides: an overview about the recently discovered peptides from endophytic microbes. NATURAL PRODUCTS AND BIOPROSPECTING 2014; 4:257-70. [PMID: 25205333 PMCID: PMC4199945 DOI: 10.1007/s13659-014-0038-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 08/24/2014] [Indexed: 05/15/2023]
Abstract
An endophyte is a fungus or bacterium that lives within a plant in a symbiotic relationship. Extensive colonization of the plant tissue by endophytes creates a barrier effect, where they outcompete and prevent pathogenic organisms from taking hold. This happens by producing secondary metabolites that inhibit the growth of the competitors or pathogens. In this way they play a very important role in the plant defence mechanisms. The metabolites produced by these endophytes fall within a wide range of classes of compounds that include peptides which are the focus of this review. Peptides are increasingly being selected for drug development because they are specific for their targets and have a higher degree of interactions. There have been quite a number of endophytic peptides reported in the recent past indicating that endophytes can be used for the production of peptide based drugs. Molecular screening for NRPS, which shows peptide producing capability, has also shown that endophytes are potential producers of peptides. The presence of NRPS also offers the possibility of genetic modifications which may generate peptides with high pharmacological activities. This review, therefore, aims to show the current status of peptides isolated from endophytic bacteria and fungi in the recent decade. Endophytes as potential sources of peptides according to NRPS studies will also be discussed.
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Affiliation(s)
- Muna Ali Abdalla
- Department of Food Science and Technology, Faculty of Agriculture, University of Khartoum, 13314, Shambat, Khartoum North, Sudan,
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Aravind SR, Sreelekha TT, Dileep Kumar BS, Kumar SN, Mohandas C. Characterization of three depside compounds from a Western Ghat lichen Parmelia erumpens Kurok with special reference to antimicrobial and anticancer activity. RSC Adv 2014. [DOI: 10.1039/c4ra04137b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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48
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Isolation and identification of an endophytic fungus Pezicula sp. in Forsythia viridissima and its secondary metabolites. World J Microbiol Biotechnol 2014; 30:2639-44. [DOI: 10.1007/s11274-014-1686-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 06/04/2014] [Indexed: 10/25/2022]
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49
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RATNA SULISTIYANI TRI, LISDIYANTI PUSPITA, LESTARI YULIN. Population and Diversity of Endophytic Bacteria Associated with Medicinal Plant Curcuma zedoaria. MICROBIOLOGY INDONESIA 2014. [DOI: 10.5454/mi.8.2.4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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50
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Nishanth Kumar S, Dileep C, Mohandas C, Nambisan B, Ca J. Cyclo(d-Tyr-d-Phe): a new antibacterial, anticancer, and antioxidant cyclic dipeptide fromBacillussp. N strain associated with a rhabditid entomopathogenic nematode. J Pept Sci 2013; 20:173-85. [DOI: 10.1002/psc.2594] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 10/28/2013] [Accepted: 11/04/2013] [Indexed: 12/22/2022]
Affiliation(s)
- S. Nishanth Kumar
- Division of Crop Protection/Division of Crop Utilization; Central Tuber Crops Research Institute; Sreekariyam Thiruvananthapuram 695017 India
| | - C. Dileep
- Department of Botany; SD College; Alappuzha 688003 Kerala India
| | - C. Mohandas
- Division of Crop Protection/Division of Crop Utilization; Central Tuber Crops Research Institute; Sreekariyam Thiruvananthapuram 695017 India
| | - Bala Nambisan
- Division of Crop Protection/Division of Crop Utilization; Central Tuber Crops Research Institute; Sreekariyam Thiruvananthapuram 695017 India
| | - Jayaprakas Ca
- Division of Crop Protection/Division of Crop Utilization; Central Tuber Crops Research Institute; Sreekariyam Thiruvananthapuram 695017 India
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