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Zou L, Mo S, Jia C, Pang J, Chang X, Chen J. The tumoral microbiome of pancreatic intraductal papillary mucinous neoplasm: A single-center retrospective cohort study. J Gastroenterol Hepatol 2024; 39:496-505. [PMID: 38111357 DOI: 10.1111/jgh.16437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 10/18/2023] [Accepted: 11/14/2023] [Indexed: 12/20/2023]
Abstract
BACKGROUND AND AIM Pancreatic intraductal papillary mucinous neoplasm (IPMN) is one of the most common precancerous lesions of pancreatic carcinoma. Studies have found that the tumoral microbiome has an important influence on pancreatic carcinoma. However, the tumoral microbiome of IPMNs has rarely been explored. METHODS Tumoral microbiome gene sequencing was carried out using 16 specimens of IPMN and 45 specimens of IPMN with associated invasive carcinoma (IPMN-IC) by 2bRAD sequencing for microbiome. The profile of the tumoral microbiome was summarized. Associations of the tumoral microbiome with disease grade, histological subtype, and prognosis were analyzed. RESULTS A total of 598 species of microbes were identified, comprising 228 genera, 109 families, 60 orders, 29 classes, 14 phyla, and 2 kingdoms. The genus Pseudomonas was detected more frequently and had higher relative abundance in IPMN-ICs; Alcaligenes faecalis was detected with higher relative abundance in IPMNs. Bifidobacterium pseudolongum had a higher relative abundance in the IPMN-IC group, regardless of histological subtype. Moreover, among patients with IPMN-ICs, those with a high relative abundance of B. pseudolongum had better overall survival than those with a low relative abundance. Patients who were positive for Staphylococcus aureus or Mycolicibacillus koreensis had shorter survival. The presence of S. aureus was an independent risk factor for poor prognosis. CONCLUSIONS There are enriching tumoral microbes in IPMN. The tumoral microbiome of IPMN is different from that of IPMN-IC.
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Affiliation(s)
- Long Zou
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shengwei Mo
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Congwei Jia
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Junyi Pang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaoyan Chang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie Chen
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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8-Hydroxyquinoline a natural chelating agent from Streptomyces spp. inhibits A549 lung cancer cell lines via BCL2/STAT3 regulating pathways. World J Microbiol Biotechnol 2022; 38:182. [PMID: 35953631 DOI: 10.1007/s11274-022-03368-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/28/2022] [Indexed: 10/15/2022]
Abstract
Biomolecules from Streptomyces spp. are emerging sources of natural drugs and have been focused on over the decade. The discovery of bioactive chemotherapeutic molecules from soil Streptomyces spp. has opened the medium for the search for natural drugs. In the current study, 8-HOQ was extracted and purified from soil Streptomyces spp. and was evaluated on A549 and BEAS cell lines. The apoptotic and caspase mediated pathways were evaluated using cell proliferation, dual fluorescent staining, migration, invasion and mRNA as well as protein quantification of apoptotic markers. In vitro cytotoxicity test revealed that 8-HOQ possesses potent cytotoxicity activities with IC50 values of 26 µM, 5 µM, 7.2 µM at 24 h, 48 h, and 72 h respectively against A549 lung cancer cell lines. The result also demonstrated that 8-HOQ from Streptomyces spp significantly inhibited the A549 lung cancer cell lines and activated the intrinsic pathways of apoptosis. The caspase-3 and caspase-8 activities were potentially elevated in 8-HOQ treated A549 cell lines and confirmed that 8-HOQ mediated A549 cancer cell death through the intrinsic pathway. The results explored caspase-mediated apoptosis as a mechanism underlying the inhibition of cancer cell viability in a dose-dependent manner. The expression of P53, BCL2 and STAT3 were inhibited in A549 cell lines and confirmed the metastasis inhibitory potential of 8-HOQ by blocking migration and invasion in A549 cell lines. These results indicated that 8-HOQ from Streptomyces spp. potentially inhibited growth and migration of A549 lung cancer cell lines.
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Zhang XG, Guo SJ, Wang WN, Wei GX, Ma GY, Ma XD. Diversity and Bioactivity of Endophytes From Angelica sinensis in China. Front Microbiol 2020; 11:1489. [PMID: 33013716 PMCID: PMC7461802 DOI: 10.3389/fmicb.2020.01489] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 06/08/2020] [Indexed: 12/14/2022] Open
Abstract
Plant seeds are not merely reproductive organs, they are also carriers of microorganism, particularly, inherent and non-invasive characteristic endophytes in host plant. Therefore, in this study, the endophytic diversity of Angelica seeds was studied and compared with endophytes isolated from healthy leaves, stems, roots, and seeds of A. sinensis using 20 different media. The metabolites of endophytic strains were evaluated with six different methods for their antioxidant activity and the paper disc diffusion method for antimicrobial activities. As a result, 226 endophytes were isolated. Compared with the biodiversity and abundance of uncultured fungi from Angelica seed, the result showed that the most frequent endophytic fungi were Alternaria sp. as seen in artificial media; moreover, compared with artificial media, the pathogenic fungi, including Fusarium sp. and Pseudallescheria sp., were not found from the Angelica seed, the results suggested it may not be inherent endophytes in plants. In addition, bacteria from seven phyla were identified by high-throughput sequencing, while five phyla of endophytic bacteria were not isolated on artificial media including Proteobacteria, Actinobacteria, Bacteroidetes, Microgenomates, and Saccharibacteria. Furthermore, the sample JH-4 mycelium displayed the best antioxidant activity, and the active constituent may be a flavonoid as determined by total phenol and flavonoid content. Moreover, YH-12-1 mycelium had strong inhibitory activity against the five tested strains and the minimum inhibitory concentration (MIC) against Pseudomonas aeruginosa and Streptococcus pneumoniae was found to be 25 μg/mL. Our results confirm that plant endophytes are rich in biodiversity and contain important resource of many uncultured microorganisms.
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Affiliation(s)
- Xin-Guo Zhang
- School of Life Sciences and Engineering, Lanzhou University of Technology, Lanzhou, China.,Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, China
| | - Si-Jia Guo
- School of Life Sciences and Engineering, Lanzhou University of Technology, Lanzhou, China.,Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, China
| | - Wen-Na Wang
- School of Life Sciences and Engineering, Lanzhou University of Technology, Lanzhou, China.,Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, China
| | - Guo-Xing Wei
- School of Life Sciences and Engineering, Lanzhou University of Technology, Lanzhou, China.,Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, China
| | - Guo-Yan Ma
- School of Life Sciences and Engineering, Lanzhou University of Technology, Lanzhou, China.,Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, China
| | - Xiao-Di Ma
- School of Life Sciences and Engineering, Lanzhou University of Technology, Lanzhou, China.,Key Laboratory of Screening and Processing in New Tibetan Medicine of Gansu Province, Gansu, China
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Frankfater C, Henson WR, Juenger-Leif A, Foston M, Moon TS, Turk J, Kao JLF, Haas A, Hsu FF. Structural Determination of a New Peptidolipid Family from Rhodococcus opacus and the Pathogen Rhodococcus equi by Multiple Stage Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2020; 31:611-623. [PMID: 31967470 DOI: 10.1021/jasms.9b00059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The cell walls of the genus Rhodococcus including the pathogenic bacterium Rhodococcus equi (R. equi) and biotechnologically important bacterium Rhodococcus opacus (R. opacus) contain an abundant peptidolipid (or termed lipopeptide) family whose structures have not been reported previously. Here, we describe a linear ion-trap multiple-stage mass spectrometric (LIT MSn) approach with high resolution mass spectrometry (HRMS), in conjunction with NMR spectroscopy, chemical reactions, and GC/MS analysis to define the structures of these compounds. We employed LIT MSn (n = 2-8) on the [M + Na]+ ion species to establish the peptide sequence, the identity of the fatty acyl substituent, and its location within the molecule, while NMR spectroscopy and GC/MS were used to recognize the Leu and Ile moieties. The major new lipopeptide found in R. opacus is defined as C17H35CH(OH)CH2CO-NHLeu-Ser-Leu-Ile-Thr-Ile-PheCOOH, where a β-OH fatty acyl (C18-C22) substituent is attached to the N-terminal of the LSLITIF peptide chain via a NH-CO bond. By contrast, the main peptidolipids found in R. equi belong to the cyclopeptidolipid family, which possesses the same peptide sequence and lipid chain, but the β-OH group of the fatty acyl moiety and the C-terminus of the peptide (i.e., the -COOH) are cyclized by an ester bond formation to a lactone, with a structure similar to iturin-A (Peypoux, F. et al. Biochemistry 1978, 17, 3992-3996). The antibiotic activity test of these new lipids did not reveal an activity against any of seven microorganisms tested.
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Affiliation(s)
| | | | - Alexandra Juenger-Leif
- Institute for Cell Biology, University of Bonn, Ulrich-Haberland-Strasse 61a, 53121 Bonn, Germany
| | | | | | | | | | - Albert Haas
- Institute for Cell Biology, University of Bonn, Ulrich-Haberland-Strasse 61a, 53121 Bonn, Germany
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Phylogenetic Analysis and Screening of Antimicrobial and Antiproliferative Activities of Culturable Bacteria Associated with the Ascidian Styela clava from the Yellow Sea, China. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7851251. [PMID: 31559313 PMCID: PMC6735190 DOI: 10.1155/2019/7851251] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/04/2019] [Accepted: 07/28/2019] [Indexed: 01/01/2023]
Abstract
Over 1,000 compounds, including ecteinascidin-743 and didemnin B, have been isolated from ascidians, with most having bioactive properties such as antimicrobial, antitumor, and enzyme-inhibiting activities. In recent years, direct and indirect evidence has shown that some bioactive compounds isolated from ascidians are not produced by ascidians themselves but by their symbiotic microorganisms. Isolated culturable bacteria associated with ascidians and investigating their potential bioactivity are an important approach for discovering novel compounds. In this study, a total of 269 bacteria were isolated from the ascidian Styela clava collected from the coast of Weihai in the north of the Yellow Sea, China. Phylogenetic relationships among 183 isolates were determined using their 16S rRNA gene sequences. Isolates were tested for antimicrobial activity against seven indicator strains, and an antiproliferative activity assay was performed to test for inhibition of human hepatocellular carcinoma Bel 7402 and human cervical carcinoma HeLa cell proliferation. Our results showed that the isolates belonged to 26 genera from 18 families in four phyla (Firmicutes, Actinobacteria, Proteobacteria, and Bacteroidetes). Bacillus and Streptomyces were the most dominant genera; 146 strains had potent antimicrobial activities and inhibited at least one of the indicator strains. Crude extracts from 29 strains showed antiproliferative activity against Bel 7402 cells with IC50 values below 500 μg·mL-1, and 53 strains showed antiproliferative activity against HeLa cells, with IC50 values less than 500 μg·mL-1. Our results suggest that culturable bacteria associated with the ascidian Styela clava may be a promising source of novel bioactive compounds.
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Babadi ZK, Sudarman E, Ebrahimipour GH, Primahana G, Stadler M, Wink J. Structurally diverse metabolites from the rare actinobacterium Saccharothrix xinjiangensis. J Antibiot (Tokyo) 2019; 73:48-55. [PMID: 31451754 DOI: 10.1038/s41429-019-0223-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 07/17/2019] [Accepted: 08/08/2019] [Indexed: 11/09/2022]
Abstract
The bioassay-guided fractionation from cultures of the actinobacterium Saccharothrix xinjiangensis Act24Zk, collected from the Caspian Sea beach in Iran led to the isolation of three new compounds, caerulomycin M (1), saccharopyrone (2), and saccharonoic acid (3), together with the known compound, caerulomycin A (4). Their structures were elucidated from HR-ESIMS and 1D and 2D NMR data. Compound 2 displayed moderate cytotoxic activity against the human cervix carcinoma HeLa cells KB3.1 with an IC50 value of 5.4 µM.
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Affiliation(s)
- Zahra Khosravi Babadi
- Department of Microbiology & Microbial Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University GC, Tehran, Iran.,Microbial Strain Collection, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Enge Sudarman
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany.,German Centre for Infection Research Association (DZIF), Partner site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Gholam Hossein Ebrahimipour
- Department of Microbiology & Microbial Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University GC, Tehran, Iran
| | - Gian Primahana
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany.,German Centre for Infection Research Association (DZIF), Partner site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Marc Stadler
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany.,German Centre for Infection Research Association (DZIF), Partner site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany
| | - Joachim Wink
- Microbial Strain Collection, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany. .,German Centre for Infection Research Association (DZIF), Partner site Hannover-Braunschweig, Inhoffenstrasse 7, 38124, Braunschweig, Germany.
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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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