1
|
Borsato G, Carnio F, Lunardon S, Moletta M, Pavan G, Terrin F, Scarso A, Plotegher N, Fabris F. A β-Glucosyl Sterol Probe for in situ Fluorescent Labelling in Neuronal Cells to Investigate Neurodegenerative Diseases. Chemistry 2024:e202400778. [PMID: 38770991 DOI: 10.1002/chem.202400778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 05/17/2024] [Accepted: 05/21/2024] [Indexed: 05/22/2024]
Abstract
A β-glucosyl sterol probe bearing a terminal alkyne moiety for fluorescent tagging enables the investigation of the neuronal and intracellular localization of this class of compounds involved in neurodegenerative diseases. The compound showed localization in the neuronal cells, with marked differences in the uptake and metabolism leading to enhanced persistence with respect to the un-glycosylated sterol analogue. In addition, a different impact was observed towards lysosomes, with the simple sterol probe showing the enlargement of the lysosome structures, while the β-glucosyl sterol was less capable to alter the morphology of this specific organelle.
Collapse
Affiliation(s)
- Giuseppe Borsato
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Francesco Carnio
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Sara Lunardon
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Mattia Moletta
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Giulio Pavan
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Francesca Terrin
- Dipartimento di Biologia, Università degli Studi di Padova, viale G. Colombo 3, 35131, Padova, Italy
| | - Alessandro Scarso
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| | - Nicoletta Plotegher
- Dipartimento di Biologia, Università degli Studi di Padova, viale G. Colombo 3, 35131, Padova, Italy
| | - Fabrizio Fabris
- Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca' Foscari Venezia, via Torino 155, 30172, Mestre Venezia, Italy
| |
Collapse
|
2
|
Ong LL, Jan HM, Le HHT, Yang TC, Kuo CY, Feng AF, Mong KKT, Lin CH. Membrane lipid remodeling eradicates Helicobacter pylori by manipulating the cholesteryl 6'-acylglucoside biosynthesis. J Biomed Sci 2024; 31:44. [PMID: 38685037 PMCID: PMC11057186 DOI: 10.1186/s12929-024-01031-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 04/14/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND Helicobacter pylori, the main cause of various gastric diseases, infects approximately half of the human population. This pathogen is auxotrophic for cholesterol which it converts to various cholesteryl α-glucoside derivatives, including cholesteryl 6'-acyl α-glucoside (CAG). Since the related biosynthetic enzymes can be translocated to the host cells, the acyl chain of CAG likely comes from its precursor phosphatidylethanolamine (PE) in the host membranes. This work aims at examining how the acyl chain of CAG and PE inhibits the membrane functions, especially bacterial adhesion. METHODS Eleven CAGs that differ in acyl chains were used to study the membrane properties of human gastric adenocarcinoma cells (AGS cells), including lipid rafts clustering (monitored by immunofluorescence with confocal microscopy) and lateral membrane fluidity (by the fluorescence recovery after photobleaching). Cell-based and mouse models were employed to study the degree of bacterial adhesion, the analyses of which were conducted by using flow cytometry and immunofluorescence staining, respectively. The lipidomes of H. pylori, AGS cells and H. pylori-AGS co-cultures were analyzed by Ultraperformance Liquid Chromatography-Tandem Mass Spectroscopy (UPLC-MS/MS) to examine the effect of PE(10:0)2, PE(18:0)2, PE(18:3)2, or PE(22:6)2 treatments. RESULTS CAG10:0, CAG18:3 and CAG22:6 were found to cause the most adverse effect on the bacterial adhesion. Further LC-MS analysis indicated that the treatment of PE(10:0)2 resulted in dual effects to inhibit the bacterial adhesion, including the generation of CAG10:0 and significant changes in the membrane compositions. The initial (1 h) lipidome changes involved in the incorporation of 10:0 acyl chains into dihydro- and phytosphingosine derivatives and ceramides. In contrast, after 16 h, glycerophospholipids displayed obvious increase in their very long chain fatty acids, monounsaturated and polyunsaturated fatty acids that are considered to enhance membrane fluidity. CONCLUSIONS The PE(10:0)2 treatment significantly reduced bacterial adhesion in both AGS cells and mouse models. Our approach of membrane remodeling has thus shown great promise as a new anti-H. pylori therapy.
Collapse
Affiliation(s)
- Lih-Lih Ong
- Institute of Biological Chemistry, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001, University Road, Eastern District, Hsinchu, 300093, Taiwan
- Institute of Chemistry, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
- Sustainable Chemical Science and Technology, Taiwan International Graduate Program, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
| | - Hau-Ming Jan
- Institute of Biological Chemistry, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
- Joint Program in Transfusion Medicine, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, USA
| | - Hong-Hanh Thi Le
- Institute of Biological Chemistry, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
| | - Tsai-Chen Yang
- Institute of Biological Chemistry, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
| | - Chou-Yu Kuo
- Institute of Biological Chemistry, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
| | - Ai-Feng Feng
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001, University Road, Eastern District, Hsinchu, 300093, Taiwan
| | - Kwok-Kong Tony Mong
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001, University Road, Eastern District, Hsinchu, 300093, Taiwan.
| | - Chun-Hung Lin
- Institute of Biological Chemistry, Academia Sinica, No. 128, Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan.
- Department of Chemistry and Institute of Biochemical Sciences, National Taiwan University, Taipei, 10617, Taiwan.
| |
Collapse
|
3
|
Sadeghloo Z, Saffarian P, Hakemi-Vala M, Sadeghi A, Yadegar A. The modulatory effect of Lactobacillus gasseri ATCC 33323 on autophagy induced by extracellular vesicles of Helicobacter pylori in gastric epithelial cells in vitro. Microb Pathog 2024; 188:106559. [PMID: 38272328 DOI: 10.1016/j.micpath.2024.106559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/22/2024] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
Helicobacter pylori has been recognized as a true pathogen, which is associated with various gastroduodenal diseases, and gastric adenocarcinoma. The crosstalk between H. pylori virulence factors and host autophagy remains challenging. H. pylori can produce extracellular vesicles (EVs) that contribute to gastric inflammation and malignancy. Some probiotic strains have been documented to modulate cell autophagy process. This study was aimed to investigate the modulatory effect of cell-free supernatant (CFS) obtained from Lactobacillus gasseri ATCC 33323 on autophagy induced by H. pylori-derived EVs. EVs were isolated from two clinical H. pylori strains (BY-1 and OC824), and characterized using transmission electron microscopy (TEM) and dynamic light scattering (DLS). The viability of AGS cells was assessed after exposure to different concentrations of H. pylori EVs, and L. gasseri CFS. Based on MTT assay and Annexin V-FITC/PI staining, 50 μg/ml of H. pylori EVs and 10 % v/v of L. gasseri CFS were used for further cell treatment experiments. Autophagy was examined using acridin orange (AO) staining, RT-qPCR analysis for autophagy mediators (LC3B, ATG5, ATG12, ATG16L1, BECN1, MTOR, and NOD1), and western blotting for LC3B expression. H. pylori EVs were detected to range in size from 50 to 200 nm. EVs of both H. pylori strains and L. gasseri CFS showed no significant effect on cell viability as compared to untreated cells. H. pylori EVs promoted the development of acidic vesicular organelles and the expression of autophagy-related genes (LC3B, ATG5, ATG12, ATG16L1, BECN1, and NOD1), and decreased the expression of MTOR in AGS cells at 12 and 24 h time periods. In addition, the production of LC3B was increased following 12 h of treatment in AGS cells. In contrast, L. gasseri CFS effectively inhibited EVs-induced autophagy, as evidenced by reduced acidic vesicular organelle formation and modulation of autophagy markers. Our study indicated that L. gasseri CFS can effectively suppress H. pylori EV-induced autophagy in AGS cells. Further investigations are required to decipher the mechanism of action L. gasseri CFS and its metabolites on autophagy inhibition induced by H. pylori.
Collapse
Affiliation(s)
- Zahra Sadeghloo
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Parvaneh Saffarian
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mojdeh Hakemi-Vala
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Sadeghi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
4
|
Kim HS, Jang E, Kim HI, Hari Babu M, Lee JY, Kim SK, Sim J. Chemical Glycosylation with p-Methoxyphenyl (PMP) Glycosides via Oxidative Activation. Org Lett 2023; 25:3471-3475. [PMID: 37140886 DOI: 10.1021/acs.orglett.3c01050] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A novel persulfate-mediated oxidative glycosylation system using p-methoxyphenyl (PMP) glycosides as bench-stable glycosyl donors is developed. This study shows that both K2S2O8 as an oxidant and Hf(OTf)4 as a Lewis acid catalyst play important roles in the oxidative activation of the PMP group into a potential leaving group. This convenient glycosylation protocol proceeds under mild conditions and delivers a wide range of biologically and synthetically valuable glycoconjugates, including glycosyl fluorides.
Collapse
Affiliation(s)
- Hyun Su Kim
- College of Pharmacy, CHA University, 120 Haeryong-ro, Pocheon-si, Gyeonggi-do 11160, Republic of Korea
| | - Eunbin Jang
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea
| | - Hoe In Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea
| | - Madala Hari Babu
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jae-Young Lee
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea
| | - Sang Kyum Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea
| | - Jaehoon Sim
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Regulatory Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
- Institute of Regulatory Innovation through Science, Kyung Hee University, Seoul 02447, Republic of Korea
| |
Collapse
|
5
|
Shimamura M, Kamijo SI, Illarionov P. C-type lectin Mincle-dependent and -independent activation of invariant NKT cells by exposure to Helicobacter pylori α-cholesteryl glucosides. FEBS J 2023; 290:134-147. [PMID: 35920835 DOI: 10.1111/febs.16588] [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: 02/23/2022] [Revised: 07/01/2022] [Accepted: 08/03/2022] [Indexed: 01/14/2023]
Abstract
Helicobacter pylori extracts cholesterol from the host and converts it to its glycosides. We found that cholesteryl 6'-O-acyl α-glucoside (ChAcαG) produced by H. pylori is recognised by both invariant Vα14+ NKT (iNKT) cells and a C-type lectin receptor Mincle (Clec4e). However, it is unclear how these duplicated recognitions cooperate and contribute to host defence against H. pylori. Among T cell populations in the liver, iNKT cells predominantly expressed the T cell activation marker CD69 just after stimulation with ChAcαG. The production of IFN-γ and IL-4 was strictly dependent on both CD1d and Jα18 expressions, indicating the necessity of iNKT cell activation for the initiation of immune responses. Production of IFN-γ by iNKT cells was markedly reduced by the Mincle deficiency on antigen-presenting cells (APCs), while IL-4 production was not significantly influenced. IL-2 production by iNKT cell hybridomas was also diminished by the Mincle deficiency upon stimulation with APCs previously loaded with ChAcαG. Here, the immune responses of iNKT cell hybridomas stimulated with wild-type APCs were reduced by the addition of anti-IL-12 blocking antibody to the level stimulated with Mincle-deficient APCs. Collectively, these results suggest that iNKT cells can be activated with the cholesteryl glycosides via a Mincle-dependent, IL-12 signal-dependent pathway and a Mincle-independent, invariant TCR signal-dominant pathway. iNKT cells activated via the Mincle-dependent pathway produce IFN-γ-dominant cytokines; hence, they may contribute to enhancing proinflammatory responses against H. pylori infection.
Collapse
Affiliation(s)
- Michio Shimamura
- Tsukuba Research Center for Interdisciplinary Materials Science, University of Tsukuba, Japan.,Mitsubishi Kagaku Institute of Life Sciences, Tokyo, Japan.,School of Science and Technology, Meiji University, Kawasaki, Japan
| | - Shin-Ichi Kamijo
- Mitsubishi Kagaku Institute of Life Sciences, Tokyo, Japan.,LifeWill Corporation, Tokyo, Japan
| | | |
Collapse
|
6
|
Chitas R, Nunes C, Reis S, Parreira P, Martins MCL. How Charge, Size and Protein Corona Modulate the Specific Activity of Nanostructured Lipid Carriers (NLC) against Helicobacter pylori. Pharmaceutics 2022; 14:pharmaceutics14122745. [PMID: 36559239 PMCID: PMC9785867 DOI: 10.3390/pharmaceutics14122745] [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: 11/01/2022] [Revised: 11/30/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022] Open
Abstract
The major risk factor associated with the development of gastric cancer is chronic infection with Helicobacter pylori. The available treatments, based on a cocktail of antibiotics, fail in up to 40% of patients and disrupt their gut microbiota. The potential of blank nanostructured lipid carriers (NLC) for H. pylori eradication was previously demonstrated by us. However, the effect of NLC charge, size and protein corona on H. pylori-specific bactericidal activity herein studied was unknown at that time. All developed NLC formulations proved bactericidal against H. pylori. Although cationic NLC had 10-fold higher bactericidal activity than anionic NLC, they lacked specificity, since Lactobacillus acidophilus was also affected. Anionic NLC achieved complete clearance in both H. pylori morphologies (rod- and coccoid-shape) by inducing alterations in bacteria membranes and the cytoplasm, as visualized by transmission electron microscopy (TEM). The presence of an NLC protein corona, composed of 93% albumin, was confirmed by mass spectrometry. This protein corona delayed the bactericidal activity of anionic NLC against H. pylori and hindered NLC activity against Escherichia coli. Overall, these results sustain the use of NLC as a promising antibiotic-free strategy targeting H. pylori.
Collapse
Affiliation(s)
- Rute Chitas
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
| | - Cláudia Nunes
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
- LAQV-REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal
| | - Salette Reis
- LAQV-REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313 Porto, Portugal
| | - Paula Parreira
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
| | - Maria Cristina L. Martins
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
- Correspondence:
| |
Collapse
|
7
|
Inhibitory and Injury-Protection Effects of O-Glycan on Gastric Epithelial Cells Infected with Helicobacter pylori. Infect Immun 2022; 90:e0039322. [PMID: 36190255 PMCID: PMC9584294 DOI: 10.1128/iai.00393-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Helicobacter pylori (H. pylori) is an important pathogen that can cause gastric cancer. Multiple adhesion molecules mediated H. pylori adherence to cells is the initial step in the infection of host cells. H. pylori cholesterol-α-glucosyltransferase (CGT) recognizes and extracts cholesterol from cell membranes to destroy lipid raft structure, further promotes H. pylori adhesion to gastric epithelial cells. O-Glycan, a substance secreted by the deep gastric mucosa, can competitively inhibit CGT activity and may serve as an important factor to prevent H. pylori colonization in the deep gastric mucosa. However, the inhibitory and injury-protection effects of O-Glycan against H. pylori infection has not been well investigated. In this study, we found that O-Glycan significantly inhibited the relative urease content in the coinfection system. In the presence of O-glycan, the injury of GES-1 cells in H. pylori persistent infection model was attenuated and the cell viability was increased. We use fluorescein isothiocyanate-conjugated cholera toxin subunit B (FITC-CTX-B) to detect lipid rafts on gastric epithelial cells and observed that O-glycan can protect H. pylori from damaging lipid raft structures on cell membranes. In addition, transcriptome data showed that O-glycan treatment significantly reduced the activation of inflammatory cancer transformation pathway caused by H. pylori infection. Our results suggest that O-Glycan is able to inhibit H. pylori persistent infection of gastric epithelial cells, reduce the damage caused by H. pylori, and could serve as a potential medicine to treat patients infected with H. pylori.
Collapse
|
8
|
Chang CC, Jan HM, Tseng CJ, Mondal S, Abera AB, Hsieh MY, Yang TC, Muthusamy S, Huang SC, Lin CH, Tony Mong KK. Metabolic Isolation, Stereochemical Determination, and Total Synthesis of Predominant Native Cholesteryl Phosphatidyl-α-glucoside from Carcinogenic Helicobacter pylori. Org Lett 2022; 24:5045-5050. [PMID: 35816729 DOI: 10.1021/acs.orglett.2c01815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report the isolation and stereochemical determination of the predominant native cholesteryl 6-O-phosphatidyl α-glucoside (CPG) from Helicobacter pylori via an integrated biological and chemical strategy. The strategy employed (i) the metabolic isolation of a CPG analogue and (ii) the enzymatic degradation of the analogue to obtain the native lactobacillic acid for the stereochemical determination. The absolute stereochemistry of the acid was found to be 11R and 12S. Using the new stereochemical data, we accomplished the total synthesis of predominant native CPG and other predominant αCG derivatives.
Collapse
Affiliation(s)
- Chia-Chen Chang
- Applied Chemistry Department, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu City 300093Taiwan, R.O.C
| | - Hau-Ming Jan
- Institute of Biological Chemistry, Academia Sinica, No.128 Academia Road Section 2, Nan-Kang, Taipei 11529, Taiwan
| | - Chieh-Jen Tseng
- Applied Chemistry Department, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu City 300093Taiwan, R.O.C
| | - Soumik Mondal
- Applied Chemistry Department, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu City 300093Taiwan, R.O.C
| | - Andualem Bahiru Abera
- Institute of Biological Chemistry, Academia Sinica, No.128 Academia Road Section 2, Nan-Kang, Taipei 11529, Taiwan.,Molecular and Biological Agricultural Sciences, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan.,Graduate Institute of Biotechnology and Biotechnology Center, National Chung-Hsing University, Taichung 40227, Taiwan
| | - Ming-Yen Hsieh
- Institute of Biological Chemistry, Academia Sinica, No.128 Academia Road Section 2, Nan-Kang, Taipei 11529, Taiwan
| | - Tsai-Chen Yang
- Institute of Biological Chemistry, Academia Sinica, No.128 Academia Road Section 2, Nan-Kang, Taipei 11529, Taiwan
| | - Sasikala Muthusamy
- Institute of Biological Chemistry, Academia Sinica, No.128 Academia Road Section 2, Nan-Kang, Taipei 11529, Taiwan.,Molecular and Biological Agricultural Sciences, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan.,Graduate Institute of Biotechnology and Biotechnology Center, National Chung-Hsing University, Taichung 40227, Taiwan
| | - Sheng-Cih Huang
- Applied Chemistry Department, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu City 300093Taiwan, R.O.C
| | - Chun-Hung Lin
- Institute of Biological Chemistry, Academia Sinica, No.128 Academia Road Section 2, Nan-Kang, Taipei 11529, Taiwan.,Molecular and Biological Agricultural Sciences, Taiwan International Graduate Program, Academia Sinica, Taipei 11529, Taiwan.,Graduate Institute of Biotechnology and Biotechnology Center, National Chung-Hsing University, Taichung 40227, Taiwan.,Department of Chemistry and Institute of Biochemical Sciences, National Taiwan University, Taipei 10617, Taiwan
| | - Kwok-Kong Tony Mong
- Applied Chemistry Department, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu City 300093Taiwan, R.O.C
| |
Collapse
|
9
|
Miri AH, Kamankesh M, Llopis-Lorente A, Liu C, Wacker MG, Haririan I, Asadzadeh Aghdaei H, Hamblin MR, Yadegar A, Rad-Malekshahi M, Zali MR. The Potential Use of Antibiotics Against Helicobacter pylori Infection: Biopharmaceutical Implications. Front Pharmacol 2022; 13:917184. [PMID: 35833028 PMCID: PMC9271669 DOI: 10.3389/fphar.2022.917184] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Helicobacter pylori (H. pylori) is a notorious, recalcitrant and silent germ, which can cause a variety of debilitating stomach diseases, including gastric and duodenal ulcers and gastric cancer. This microbe predominantly colonizes the mucosal layer of the human stomach and survives in the inhospitable gastric microenvironment, by adapting to this hostile milieu. In this review, we first discuss H. pylori colonization and invasion. Thereafter, we provide a survey of current curative options based on polypharmacy, looking at pharmacokinetics, pharmacodynamics and pharmaceutical microbiology concepts, in the battle against H. pylori infection.
Collapse
Affiliation(s)
- Amir Hossein Miri
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mojtaba Kamankesh
- Polymer Chemistry Department, School of Science, University of Tehran, Tehran, Iran
| | - Antoni Llopis-Lorente
- Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Chenguang Liu
- College of Marine Life Science, Ocean University of China, Qingdao, China
| | - Matthias G. Wacker
- Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Ismaeil Haririan
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Asadzadeh Aghdaei
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Michael R. Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, South Africa
- *Correspondence: Michael R. Hamblin, ; Abbas Yadegar, ; Mazda Rad-Malekshahi, ; Mohammad Reza Zali,
| | - Abbas Yadegar
- Foodborne and Waterborne Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Michael R. Hamblin, ; Abbas Yadegar, ; Mazda Rad-Malekshahi, ; Mohammad Reza Zali,
| | - Mazda Rad-Malekshahi
- Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- *Correspondence: Michael R. Hamblin, ; Abbas Yadegar, ; Mazda Rad-Malekshahi, ; Mohammad Reza Zali,
| | - Mohammad Reza Zali
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- *Correspondence: Michael R. Hamblin, ; Abbas Yadegar, ; Mazda Rad-Malekshahi, ; Mohammad Reza Zali,
| |
Collapse
|
10
|
Do AD, Su CH, Hsu YM. Antagonistic Activities of Lactobacillus rhamnosus JB3 Against Helicobacter pylori Infection Through Lipid Raft Formation. Front Immunol 2022; 12:796177. [PMID: 35095872 PMCID: PMC8794797 DOI: 10.3389/fimmu.2021.796177] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 12/24/2021] [Indexed: 11/13/2022] Open
Abstract
Helicobacter pylori is a Gram-negative pathogen that can increase the risk of stomach cancer in infected patients. H. pylori exploits lipid rafts to infect host cells. Infection triggers clustering of Lewis x antigen (Lex) and integrins in lipid rafts to facilitate H. pylori adherence to the gastric epithelium. H. pylori infection can be treated with probiotics containing lactic acid bacteria that offer numerous benefits to the host while lacking the side effects associated with antibiotic therapy. Previously, we showed that the cell-free supernatant (CFS) derived from Lactobacillus rhamnosus JB3 (LR-JB3) at a multiplicity of infection (MOI) of 25 attenuated the pathogenicity of H. pylori. In this study, we established a mucin model to simulate the gastric environment and to further understand the influence of mucin on the pathogenesis of H. pylori. Porcine stomach mucin dramatically upregulated H. pylori virulence gene expression, including that of babA, sabA, fucT, vacA, hp0499, cagA, and cagL, as well as the adhesion and invasion ability of H. pylori and induced increased levels of IL-8 in infected-AGS cells. The CFS derived from LR-JB3 at a MOI of 25 reduced the expression of H. pylori sabA, fucT, and hp0499 in mucin, as well as that of the Lex antigen and the α5β1 integrin in AGS cells during co-cultivation. These inhibitory effects of LR-JB3 also suppressed lipid raft clustering and attenuated Lewis antigen-dependent adherence, type IV secretion system-mediated cell contact, and lipid raft-mediated entry of VacA to host cells. In conclusion, LR-JB3 could affect H. pylori infection through mediating lipid raft formation of the host cells. The currently unknown cues secreted from LR-JB3 are valuable not only for treating H. pylori infection, but also for treating diseases that are also mediated by lipid raft signaling, such as cancer and aging-associated and neurodegenerative conditions.
Collapse
Affiliation(s)
- Anh Duy Do
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Chiu-Hsian Su
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan.,Department of Animal Science and Technology, Tunghai University, Taichung, Taiwan
| | - Yuan-Man Hsu
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan.,Department of Animal Science and Technology, Tunghai University, Taichung, Taiwan
| |
Collapse
|
11
|
Muthusamy S, Jan HM, Hsieh MY, Mondal S, Liu WC, Ko YA, Yang WY, Mong KKT, Chen GC, Lin CH. Enhanced enzymatic production of cholesteryl 6'-acylglucoside impairs lysosomal degradation for the intracellular survival of Helicobacter pylori. J Biomed Sci 2021; 28:72. [PMID: 34706729 PMCID: PMC8549234 DOI: 10.1186/s12929-021-00768-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 10/08/2021] [Indexed: 01/15/2023] Open
Abstract
Background During autophagy defense against invading microbes, certain lipid types are indispensable for generating specialized membrane-bound organelles. The lipid composition of autophagosomes remains obscure, as does the issue of how specific lipids and lipid-associated enzymes participate in autophagosome formation and maturation. Helicobacter pylori is auxotrophic for cholesterol and converts cholesterol to cholesteryl glucoside derivatives, including cholesteryl 6ʹ-O-acyl-α-d-glucoside (CAG). We investigated how CAG and its biosynthetic acyltransferase assist H. pylori to escape host-cell autophagy. Methods We applied a metabolite-tagging method to obtain fluorophore-containing cholesteryl glucosides that were utilized to understand their intracellular locations. H. pylori 26695 and a cholesteryl glucosyltransferase (CGT)-deletion mutant (ΔCGT) were used as the standard strain and the negative control that contains no cholesterol-derived metabolites, respectively. Bacterial internalization and several autophagy-related assays were conducted to unravel the possible mechanism that H. pylori develops to hijack the host-cell autophagy response. Subcellular fractions of H. pylori-infected AGS cells were obtained and measured for the acyltransferase activity. Results The imaging studies of fluorophore-labeled cholesteryl glucosides pinpointed their intracellular localization in AGS cells. The result indicated that CAG enhances the internalization of H. pylori in AGS cells. Particularly, CAG, instead of CG and CPG, is able to augment the autophagy response induced by H. pylori. How CAG participates in the autophagy process is multifaceted. CAG was found to intervene in the degradation of autophagosomes and reduce lysosomal biogenesis, supporting the idea that intracellular H. pylori is harbored by autophago-lysosomes in favor of the bacterial survival. Furthermore, we performed the enzyme activity assay of subcellular fractions of H. pylori-infected AGS cells. The analysis showed that the acyltransferase is mainly distributed in autophago-lysosomal compartments. Conclusions Our results support the idea that the acyltransferase is mainly distributed in the subcellular compartment consisting of autophagosomes, late endosomes, and lysosomes, in which the acidic environment is beneficial for the maximal acyltransferase activity. The resulting elevated level of CAG can facilitate bacterial internalization, interfere with the autophagy flux, and causes reduced lysosomal biogenesis. Supplementary Information The online version contains supplementary material available at 10.1186/s12929-021-00768-w.
Collapse
Affiliation(s)
- Sasikala Muthusamy
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan.,Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, National Chung-Hsing University and Academia Sinica, Taipei, 11529, Taiwan.,Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 40227, Taiwan.,Biotechnology Center, National Chung-Hsing University, Taichung, 40227, Taiwan
| | - Hau-Ming Jan
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
| | - Ming-Yen Hsieh
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan
| | - Soumik Mondal
- Department of Applied Chemistry, National Chiao Tung University, Hsin-Chu, 30010, Taiwan
| | - Wen-Chun Liu
- Biomedical Translation Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Yi-An Ko
- Biomedical Translation Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Wei-Yuan Yang
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Kwok-Kong Tony Mong
- Department of Applied Chemistry, National Chiao Tung University, Hsin-Chu, 30010, Taiwan
| | - Guang-Chao Chen
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan.,Institute of Biochemical Sciences, National Taiwan University, Taipei, 10617, Taiwan
| | - Chun-Hung Lin
- Institute of Biological Chemistry, Academia Sinica, No. 128 Academia Road Section 2, Nan-Kang, Taipei, 11529, Taiwan. .,Molecular and Biological Agricultural Sciences Program, Taiwan International Graduate Program, National Chung-Hsing University and Academia Sinica, Taipei, 11529, Taiwan. .,Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung, 40227, Taiwan. .,Biotechnology Center, National Chung-Hsing University, Taichung, 40227, Taiwan. .,Institute of Biochemical Sciences, National Taiwan University, Taipei, 10617, Taiwan. .,Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
| |
Collapse
|
12
|
Hsu CY, Yeh JY, Chen CY, Wu HY, Chiang MH, Wu CL, Lin HJ, Chiu CH, Lai CH. Helicobacter pylori cholesterol-α-glucosyltransferase manipulates cholesterol for bacterial adherence to gastric epithelial cells. Virulence 2021; 12:2341-2351. [PMID: 34506250 PMCID: PMC8437457 DOI: 10.1080/21505594.2021.1969171] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Helicobacter pylori infection is associated with several gastrointestinal diseases, including gastritis, peptic ulcers, and gastric cancer. Infection of cells with H. pylori is dependent on lipid rafts, which are cholesterol-rich microdomains located in the cell membrane. H. pylori cholesterol-α-glucosyltransferase (CGT) catalyzes the conversion of membrane cholesterol to cholesteryl glucosides, which can be incorporated into the bacterial cell wall, facilitating evasion from immune defense and colonization in the host. However, the detailed mechanisms underlying this process remain to be explored. In this study, we discovered for the first time that H. pylori CGT could promote adherence to gastric epithelial cells in a cholesterol-dependent manner. Externalization of cell membrane phosphatidylserine (PS) is crucial for enhancement of binding of H. pylori to cells by CGT and for cytotoxin-associated gene A (CagA)-induced pathogenesis. Furthermore, exogenous cholesterol interferes with the actions of H. pylori CGT to catalyze cellular cholesterol, which impedes bacterial binding to cells and attenuates subsequent inflammation, indicating that the initial attachment of H. pylori to cells is closely dependent on host cholesterol. These results provide evidence that CGT contributes to H. pylori infectivity and it may serve as a key target for the treatment of H. pylori-associated diseases.
Collapse
Affiliation(s)
- Chung-Yao Hsu
- Graduate Institute of Biomedical Sciences, Department of Microbiology and Immunology, Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Jia-Yin Yeh
- Graduate Institute of Biomedical Sciences, Department of Microbiology and Immunology, Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Chun-Ya Chen
- Department of Laboratory Medicine, Taichung Veterans General Hospital Chiayi Branch, Chiayi, Taiwan
| | - Hui-Yu Wu
- Graduate Institute of Biomedical Sciences, Department of Microbiology and Immunology, Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Meng-Hsuan Chiang
- Graduate Institute of Biomedical Sciences, Department of Microbiology and Immunology, Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Department of Pediatrics, Department of Neurology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chia-Lin Wu
- Graduate Institute of Biomedical Sciences, Department of Microbiology and Immunology, Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Department of Pediatrics, Department of Neurology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Hwai-Jeng Lin
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Shuang-Ho Hospital, New Taipei, Taiwan.,Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Cheng-Hsun Chiu
- Graduate Institute of Biomedical Sciences, Department of Microbiology and Immunology, Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Department of Pediatrics, Department of Neurology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Chih-Ho Lai
- Graduate Institute of Biomedical Sciences, Department of Microbiology and Immunology, Department of Biochemistry, College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Molecular Infectious Disease Research Center, Department of Pediatrics, Department of Neurology, Chang Gung Memorial Hospital, Linkou, Taiwan.,Department of Microbiology, School of Medicine, China Medical University, Taichung, Taiwan.,Department of Nursing, Asia University, Taichung, Taiwan
| |
Collapse
|
13
|
Zhou S, Zhong X, Guo A, Xiao Q, Ao J, Zhu W, Cai H, Ishiwata A, Ito Y, Liu XW, Ding F. ZnI 2-Directed Stereocontrolled α-Glucosylation. Org Lett 2021; 23:6841-6845. [PMID: 34411478 DOI: 10.1021/acs.orglett.1c02405] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Here we report a glucosylation strategy mediated by ZnI2, a cheap and mild Lewis acid, for the highly stereoselective construction of 1,2-cis-O-glycosidic linkages using easily accessible and common 4,6-O-tethered glucosyl donors. The versatility and effectiveness of the α-glucosylation strategy were demonstrated successfully with various acceptors, including complex alcohols. This approach demonstrates the feasibility of the modular synthesis of various α-glucans with both linear and branched backbone structures.
Collapse
Affiliation(s)
- Siai Zhou
- School of Pharmaceutical Sciences-Shenzhen, Sun Yat-sen University, Shenzhen 518107, China
| | - Xuemei Zhong
- School of Pharmaceutical Sciences-Shenzhen, Sun Yat-sen University, Shenzhen 518107, China
| | - Aoxin Guo
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 637371 Singapore
| | - Qian Xiao
- School of Pharmaceutical Sciences-Shenzhen, Sun Yat-sen University, Shenzhen 518107, China
| | - Jiaming Ao
- School of Pharmaceutical Sciences-Shenzhen, Sun Yat-sen University, Shenzhen 518107, China
| | - Wanmeng Zhu
- School of Pharmaceutical Sciences-Shenzhen, Sun Yat-sen University, Shenzhen 518107, China
| | - Hui Cai
- School of Pharmaceutical Sciences-Shenzhen, Sun Yat-sen University, Shenzhen 518107, China
| | - Akihiro Ishiwata
- RIKEN Cluster for Pioneering Research, Wako, Saitama 3510198, Japan
| | - Yukishige Ito
- RIKEN Cluster for Pioneering Research, Wako, Saitama 3510198, Japan.,Graduate School of Science, Osaka University, Toyonaka, Osaka 5600043, Japan
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, Nanyang Technological University, 637371 Singapore
| | - Feiqing Ding
- School of Pharmaceutical Sciences-Shenzhen, Sun Yat-sen University, Shenzhen 518107, China
| |
Collapse
|
14
|
Timmer MSM, Teunissen TJ, Kodar K, Foster AJ, Yamasaki S, Stocker BL. Cholesteryl glucosides signal through the carbohydrate recognition domain of the macrophage inducible C-type lectin (mincle). Org Biomol Chem 2021; 19:2198-2202. [PMID: 33625427 DOI: 10.1039/d0ob02342f] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Cholesteryl α-d-glucosides (αGCs) are unique metabolic products of the cancer-causing human pathogen Helicobacter pylori. Via signalling through the Macrophage inducible C-type lectin (Mincle) and the induction of a pro-inflammatory response, they are thought to play a role in the development of gastric atrophy. Herein, we prepared the first library of steryl d-glucosides and determined that they preferentially signal through the carbohydrate recognition domain of human Mincle, rather than the amino acid consensus motif. Lipidated steryl d-glucosides exhibited enhanced Mincle agonist activity, with C18 cholesteryl 6-O-acyl-α-d-glucoside (2c) being the most potent activator of human monocytes. Despite exhibiting strong Mincle signalling, sito- (5b) and stigmasterol glycosides (6b) led to a poor inflammatory response in primary cells, suggesting that Mincle is a potential therapeutic target for preventing H. pylori-mediated inflammation and cancer.
Collapse
Affiliation(s)
- Mattie S M Timmer
- School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand.
| | - Thomas J Teunissen
- School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand.
| | - Kristel Kodar
- School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand.
| | - Amy J Foster
- School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand.
| | - Sho Yamasaki
- Department of Molecular Immunology, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan and Laboratory of Molecular Immunology, Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka 565-0871, Japan and Division of Molecular Design, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Fukuoka 812-8582, Japan and Division of Molecular Immunology, Medical Mycology Research Center, Chiba University, Chiba 260-8673, Japan
| | - Bridget L Stocker
- School of Chemical and Physical Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand.
| |
Collapse
|
15
|
Imai S, Ooki T, Murata-Kamiya N, Komura D, Tahmina K, Wu W, Takahashi-Kanemitsu A, Knight CT, Kunita A, Suzuki N, Del Valle AA, Tsuboi M, Hata M, Hayakawa Y, Ohnishi N, Ueda K, Fukayama M, Ushiku T, Ishikawa S, Hatakeyama M. Helicobacter pylori CagA elicits BRCAness to induce genome instability that may underlie bacterial gastric carcinogenesis. Cell Host Microbe 2021; 29:941-958.e10. [PMID: 33989515 DOI: 10.1016/j.chom.2021.04.006] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/17/2021] [Accepted: 04/14/2021] [Indexed: 12/15/2022]
Abstract
Infection with CagA-producing Helicobacter pylori plays a causative role in the development of gastric cancer. Upon delivery into gastric epithelial cells, CagA deregulates prooncogenic phosphatase SHP2 while inhibiting polarity-regulating kinase PAR1b through complex formation. Here, we show that CagA/PAR1b interaction subverts nuclear translocation of BRCA1 by inhibiting PAR1b-mediated BRCA1 phosphorylation. It hereby induces BRCAness that promotes DNA double-strand breaks (DSBs) while disabling error-free homologous recombination-mediated DNA repair. The CagA/PAR1b interaction also stimulates Hippo signaling that circumvents apoptosis of DNA-damaged cells, giving cells time to repair DSBs through error-prone mechanisms. The DSB-activated p53-p21Cip1 axis inhibits proliferation of CagA-delivered cells, but the inhibition can be overcome by p53 inactivation. Indeed, sequential pulses of CagA in TP53-mutant cells drove somatic mutation with BRCAness-associated genetic signatures. Expansion of CagA-delivered cells with BRCAness-mediated genome instability, from which CagA-independent cancer-predisposing cells arise, provides a plausible "hit-and-run mechanism" of H. pylori CagA for gastric carcinogenesis.
Collapse
Affiliation(s)
- Satoshi Imai
- Department of Microbiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Takuya Ooki
- Department of Microbiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Naoko Murata-Kamiya
- Department of Microbiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan.
| | - Daisuke Komura
- Department of Preventive Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Kamrunnesa Tahmina
- Department of Microbiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Weida Wu
- Department of Microbiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | | | - Christopher Takaya Knight
- Department of Microbiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Akiko Kunita
- Department of Pathology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Nobumi Suzuki
- Department of Gastroenterology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Adriana A Del Valle
- Department of Microbiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Mayo Tsuboi
- Department of Gastroenterology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Masahiro Hata
- Department of Gastroenterology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Yoku Hayakawa
- Department of Gastroenterology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Naomi Ohnishi
- Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Koji Ueda
- Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo 135-8550, Japan
| | - Masashi Fukayama
- Department of Pathology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Tetsuo Ushiku
- Department of Pathology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Shumpei Ishikawa
- Department of Preventive Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Masanori Hatakeyama
- Department of Microbiology, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan.
| |
Collapse
|
16
|
Qaria MA, Qumar S, Sepe LP, Ahmed N. Cholesterol glucosylation-based survival strategy in Helicobacter pylori. Helicobacter 2021; 26:e12777. [PMID: 33368895 DOI: 10.1111/hel.12777] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 11/09/2020] [Accepted: 11/12/2020] [Indexed: 12/14/2022]
Abstract
Helicobacter pylori is a major chronic health problem, infecting more than half of the population worldwide. H. pylori infection is linked with various clinical complications ranging from gastritis to gastric cancer. The resolution of gastritis and peptic ulcer appears to be linked with the eradication of H. pylori. However, resistance to antibiotics and eradication failure rates are reaching alarmingly high levels. This calls for urgent action in finding alternate methods for H. pylori eradication. Here, we discuss the recently identified mechanism of H. pylori known as cholesterol glucosylation, mediated by the enzyme cholesterol-α-glucosyltransferase, encoded by the gene cgt. Cholesterol glucosylation serves several functions that include promoting immune evasion, enhancing antibiotic resistance, maintaining the native helical morphology, and supporting functions of prominent virulence factors such as CagA and VacA. Consequently, strategies aiming at inhibition of the cholesterol glucosylation process have the potential to attenuate the potency of H. pylori infection and abrogate H. pylori immune evasion capabilities. Knockout of H. pylori cgt results in unsuccessful colonization and elimination by the host immune responses. Moreover, blocking cholesterol glucosylation can reverse antibiotic susceptibility in H. pylori. In this work, we review the main roles of cholesterol glucosylation in H. pylori and evaluate whether this mechanism can be targeted for the development of alternate methods for eradication of H. pylori infection.
Collapse
Affiliation(s)
- Majjid A Qaria
- Pathogen Biology Laboratory, Department of Biotechnology and Bioinformatics, University of Hyderabad, Hyderabad, India
| | - Shamsul Qumar
- Pathogen Biology Laboratory, Department of Biotechnology and Bioinformatics, University of Hyderabad, Hyderabad, India
| | - Ludovico P Sepe
- Department of Biological Safety, German Federal Institute for Risk Assessment (BfR), Berlin, Germany
| | - Niyaz Ahmed
- Pathogen Biology Laboratory, Department of Biotechnology and Bioinformatics, University of Hyderabad, Hyderabad, India
| |
Collapse
|
17
|
Mayengbam SS, Singh A, Pillai AD, Bhat MK. Influence of cholesterol on cancer progression and therapy. Transl Oncol 2021; 14:101043. [PMID: 33751965 PMCID: PMC8010885 DOI: 10.1016/j.tranon.2021.101043] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/24/2021] [Accepted: 02/11/2021] [Indexed: 12/24/2022] Open
Abstract
Abnormality in blood cholesterol level is significantly correlated with risk of different cancers. Majority of tumor tissue from cancer patient exhibits overexpression of LDLR and ACAT for supporting rapid cancer cell proliferation. Alteration of the cholesterol metabolism in cancer cells hampers therapeutic response. Targeting cholesterol metabolism for treatment of cancer with other conventional chemotherapeutic drugs appears to be beneficial.
Cholesterol is a fundamental molecule necessary for the maintenance of cell structure and is vital to various normal biological functions. It is a key factor in lifestyle-related diseases including obesity, diabetes, cardiovascular disease, and cancer. Owing to its altered serum chemistry status under pathological states, it is now being investigated to unravel the mechanism by which it triggers various health complications. Numerous clinical studies in cancer patients indicate an alteration in blood cholesterol level (either decreased or increased) in comparison to normal healthy individuals. This article elaborates on our understanding as to how cholesterol is being hijacked in the malignancy for the development, survival, stemness, progression, and metastasis of cancerous cells. Also, it provides a glimpse of how cholesterol derived entities, alters the signaling pathway towards their advantage. Moreover, deregulation of the cholesterol metabolism pathway has been often reported to hamper various treatment strategies in different cancer. In this context, attempts have been made to bring forth its relevance in being targeted, in pre-clinical and clinical studies for various treatment modalities. Thus, understanding the role of cholesterol and deciphering associated molecular mechanisms in cancer progression and therapy are of relevance towards improvement in the management of various cancers.
Collapse
Affiliation(s)
| | - Abhijeet Singh
- National Centre for Cell Science, Savitribai Phule Pune University, Ganeshkhind, Pune 411 007, India
| | - Ajay D Pillai
- National Centre for Cell Science, Savitribai Phule Pune University, Ganeshkhind, Pune 411 007, India
| | - Manoj Kumar Bhat
- National Centre for Cell Science, Savitribai Phule Pune University, Ganeshkhind, Pune 411 007, India.
| |
Collapse
|
18
|
Structure, metabolism and biological functions of steryl glycosides in mammals. Biochem J 2021; 477:4243-4261. [PMID: 33186452 PMCID: PMC7666875 DOI: 10.1042/bcj20200532] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/09/2020] [Accepted: 10/21/2020] [Indexed: 12/20/2022]
Abstract
Steryl glycosides (SGs) are sterols glycosylated at their 3β-hydroxy group. They are widely distributed in plants, algae, and fungi, but are relatively rare in bacteria and animals. Glycosylation of sterols, resulting in important components of the cell membrane SGs, alters their biophysical properties and confers resistance against stress by freezing or heat shock to cells. Besides, many biological functions in animals have been suggested from the observations of SG administration. Recently, cholesteryl glucosides synthesized via the transglycosidation by glucocerebrosidases (GBAs) were found in the central nervous system of animals. Identification of patients with congenital mutations in GBA genes or availability of respective animal models will enable investigation of the function of such endogenously synthesized cholesteryl glycosides by genetic approaches. In addition, mechanisms of the host immune responses against pathogenic bacterial SGs have partially been resolved. This review is focused on the biological functions of SGs in mammals taking into consideration their therapeutic applications in the future.
Collapse
|
19
|
Smith DGM, Ito E, Yamasaki S, Williams SJ. Cholesteryl 6- O-acyl-α-glucosides from diverse Helicobacter spp. signal through the C-type lectin receptor Mincle. Org Biomol Chem 2020; 18:7907-7915. [PMID: 32996960 DOI: 10.1039/d0ob01776k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Helicobacter spp. are Gram-negative bacteria that cause a spectrum of disease in the gut, biliary tree and liver. Many Helicobacter spp. produce a range of cholesteryl α-glucosides that have the potential to act as pathogen associated molecular patterns. We report a highly stereoselective α-glucosylation of cholesterol using 3,4,6-tri-O-acetyl-2-O-benzyl-d-glucopyranosyl N-phenyl-2,2,2-trifluoroacetimidate, which allowed the synthesis of cholesteryl α-glucoside (αCG) and representative Helicobacter spp. cholesteryl 6-O-acyl-α-glucosides (αCAGs; acyl = C12:0, 14:0, C16:0, C18:0, C18:1). All αCAGs, irrespective of the nature of their acyl chain composition, strongly agonised signalling through the C-type lectin receptor Mincle from human and mouse to similar degrees. By contrast, αCG only weakly signalled through human Mincle, and did not signal through mouse Mincle. These results provide a molecular basis for understanding of the immunobiology of non-pylori Helicobacter infections in humans and other animals.
Collapse
Affiliation(s)
- Dylan G M Smith
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3010, Australia.
| | | | | | | |
Collapse
|