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SurA-like and Skp-like Proteins as Important Virulence Determinants of the Gram Negative Bacterial Pathogens. Int J Mol Sci 2022; 24:ijms24010295. [PMID: 36613738 PMCID: PMC9820271 DOI: 10.3390/ijms24010295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/19/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
In the Gram-negative bacteria, many important virulence factors reach their destination via two-step export systems, and they must traverse the periplasmic space before reaching the outer membrane. Since these proteins must be maintained in a structure competent for transport into or across the membrane, they frequently require the assistance of chaperones. Based on the results obtained for the model bacterium Escherichia coli and related species, it is assumed that in the biogenesis of the outer membrane proteins and the periplasmic transit of secretory proteins, the SurA peptidyl-prolyl isomerase/chaperone plays a leading role, while the Skp chaperone is rather of secondary importance. However, detailed studies carried out on several other Gram-negative pathogens indicate that the importance of individual chaperones in the folding and transport processes depends on the properties of client proteins and is species-specific. Taking into account the importance of SurA functions in bacterial virulence and severity of phenotypes due to surA mutations, this folding factor is considered as a putative therapeutic target to combat microbial infections. In this review, we present recent findings regarding SurA and Skp proteins: their mechanisms of action, involvement in processes related to virulence, and perspectives to use them as therapeutic targets.
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Chu A, Yu X, Guo Q, Li Q, Sun M, Yuan Y, Gong Y. H. pylori slyD, a novel virulence factor, is associated with Wnt pathway protein expression during gastric disease progression. Microb Pathog 2020; 148:104428. [PMID: 32791303 DOI: 10.1016/j.micpath.2020.104428] [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: 07/08/2019] [Revised: 07/22/2020] [Accepted: 07/27/2020] [Indexed: 01/26/2023]
Abstract
We have previously reported that the virulence factor HpslyD is related to the occurrence of gastric diseases. However, its mechanism of pathogenesis is still unclear. It is commonly believed that the Wnt/β-catenin pathway is indispensable for the development of gastric cancer, but it is unclear whether HpslyD and Wnt/β-catenin interact during the development of gastric diseases. Therefore, we measured the expression of E-cadherin, β-catenin, TCF4, and CDX2 proteins by IHC in gastric mucosa specimens from patients with different gastric diseases and compared the differences in protein expression to H. pylori-infection status. The results indicated that the expression of these proteins was associated with HpslyD infection. HpslyD subtype infection, rather than common H. pylori infection, may have a greater effect on the expression of Wnt proteins in atrophic gastritis and gastric cancer. Additionally, HpslyD strain infection promoted the expression of Wnt pathway-related proteins with the progression of gastric disease. This study provides insight into the pathogenesis of H. pylori-related gastric diseases and "type-based treatment" for H. pylori infection.
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Affiliation(s)
- Aining Chu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Xiuwen Yu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Qianqian Guo
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Qiuping Li
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Mingjun Sun
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China
| | - Yuan Yuan
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.
| | - Yuehua Gong
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang, 110001, China; Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang, 110001, China.
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Xu X, Wang H, Li H, Sun H. Metalloproteomic Approaches for Matching Metals to Proteins: The Power of Inductively Coupled Plasma Mass Spectrometry (ICP-MS). CHEM LETT 2020. [DOI: 10.1246/cl.200155] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaohan Xu
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Haibo Wang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Hongyan Li
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Hongzhe Sun
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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Datta C, Subuddhi A, Kumar M, Lepcha TT, Chakraborty S, Jana K, Ghosh Z, Mukhopadhyay AK, Basu J, Kundu M. Genome-wide mRNA-miRNA profiling uncovers a role of the microRNA miR-29b-1-5p/PHLPP1 signalling pathway in Helicobacter pylori-driven matrix metalloproteinase production in gastric epithelial cells. Cell Microbiol 2018; 20:e12859. [PMID: 29749704 DOI: 10.1111/cmi.12859] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 03/29/2018] [Accepted: 05/02/2018] [Indexed: 02/06/2023]
Abstract
Aberrant expression of microRNAs (miRNAs) is associated with tumour progression, extracellular matrix remodelling, and cell proliferation. miRNAs modulate host gene expression during infection by pathogens such as Helicobacter pylori, which is associated with varying degrees of gastric pathology. In order to gain insight into the regulation of gene expression by miRNAs during H. pylori infection of gastric epithelial cells and its likely downstream consequences, we analysed the transcriptomes and miRnomes of AGS cells infected with H. pylori. In silico analysis of miRNA-mRNA interactions suggested that miR-29b-1-5p was a likely regulator of pathways associated with gastric epithelial cell pathology. We validated PH domain leucine rich phosphatase 1 (PHLPP1), a negative regulator of the Akt signalling pathway, as a target of miR-29b-1-5p. In an in vivo mouse model, we observed that infection with H. pylori was associated with upregulation of miR-29b-1-5p and downregulation of PHLPP1. Transfection with either a mimic or an inhibitor of miR-29b-1-5p confirmed that downregulation of PHLPP1 upregulates Akt-dependent NF-κB signalling leading to activation of matrix metalloproteinases 2 and 9, players in the degradation of extracellular matrix during H. pylori infection. The secreted antigen HP0175 was associated with upregulation of miR-29b-1-5p, regulation of metalloproteinase activity, and migration of AGS cells. Our study suggests that targeting the miR-29b-1-5p/PHLPP1 signalling axis could be a potential host-directed approach for regulating the outcome of H. pylori infection.
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Affiliation(s)
| | | | - Manish Kumar
- Department of Chemistry, Bose Institute, Kolkata, India
| | | | | | - Kuladip Jana
- Division of Molecular Medicine, Bose Institute, Kolkata, India
| | - Zhumur Ghosh
- Bioinformatics Centre, Bose Institute, Kolkata, India
| | - Asish Kumar Mukhopadhyay
- Division of Bacteriology, National Institute of Cholera and Enteric Diseases Kolkata, Kolkata, India
| | - Joyoti Basu
- Department of Chemistry, Bose Institute, Kolkata, India
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Zhu Y, Gong Y, Li A, Chen M, Kang D, Liu J, Yuan Y. Differential Proteomic Analysis Reveals Protein Networks and Pathways that May Contribute to Helicobacter pylori FKBP-Type PPIase-Associated Gastric Diseases. Proteomics Clin Appl 2017; 12:e1700127. [PMID: 29148176 DOI: 10.1002/prca.201700127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 10/21/2017] [Indexed: 12/18/2022]
Abstract
PURPOSE Though Helicobacter pylori (H. pylori) has been classified as class I carcinogen, key virulence factor generated by H. pylori that causes gastric cancer remains to be fully determined. Recently, we identified a gastric cancer-associated H. pylori gene, peptidylprolyl isomerase-FK506 binding protein (PPIase-FKBP), and showed that PPIase-FKBP was capable of inducing oncogenic transformation of gastric epithelial cells. But its mechanism was unclear. EXPERIMENTAL DESIGN We carried out a comparative proteomic analysis of human gastric epithelial cells that either express PPIase-FKBP or green fluorescent protein using 2-DE and then MALDI-TOF-MS/MS. RESULTS Our results identified 28 differentially expressed proteins induced by PPIase-FKBP. These proteins participate in some cellular biological processes, such as cell proliferation, cell apoptosis and DNA replication, mRNA splicing, and protein biosynthesis. Ingenuity Pathway Analysis categorized the 28 proteins into two molecular interaction networks, involved primarily in cancer and gastrointestinal diseases. CONCLUSIONS AND CLINICAL RELEVANCE Our results provided insight on the protein interaction networks and signaling pathways that may contribute to PPIase-FKBP-associated gastric diseases and may lead to a better understanding of the mechanisms indicating the oncogenic effects of H. pylori PPIase-FKBP.
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Affiliation(s)
- Yanmei Zhu
- Department of Pathology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China.,Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Key Laboratory of Cancer Etiology and Prevention, Liaoning Provincial Education Department, China Medical University, Shenyang, China.,West Virginia University Cancer Institute, West Virginia University, Morgantown, WV, USA
| | - Yuehua Gong
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Key Laboratory of Cancer Etiology and Prevention, Liaoning Provincial Education Department, China Medical University, Shenyang, China
| | - Aodi Li
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Key Laboratory of Cancer Etiology and Prevention, Liaoning Provincial Education Department, China Medical University, Shenyang, China
| | - Moye Chen
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Key Laboratory of Cancer Etiology and Prevention, Liaoning Provincial Education Department, China Medical University, Shenyang, China
| | - Dan Kang
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Key Laboratory of Cancer Etiology and Prevention, Liaoning Provincial Education Department, China Medical University, Shenyang, China
| | - Jun Liu
- West Virginia University Cancer Institute, West Virginia University, Morgantown, WV, USA
| | - Yuan Yuan
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Key Laboratory of Cancer Etiology and Prevention, Liaoning Provincial Education Department, China Medical University, Shenyang, China
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Li Q, Zhu Y, Liu J, Yu X, Chen M, Dong N, Gong Y, Yuan Y. HpSlyD inducing CDX2 and VIL1 expression mediated through TCTP protein may contribute to intestinal metaplasia in the stomach. Sci Rep 2017; 7:2278. [PMID: 28536478 PMCID: PMC5442128 DOI: 10.1038/s41598-017-02642-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 04/13/2017] [Indexed: 12/21/2022] Open
Abstract
Helicobacter pylori infection is the most important risk factor for gastric intestinal metaplasia (IM). Our previous study demonstrated that infection with H. pylori HpslyD-positive strains associated with IM. To further investigate the signalling pathway involved in HpSlyD-induced IM, CDX2 and VIL1 expressions were determined before and after HpSlyD application. TCTP was knocked down by siRNA or overexpressed by plasmid transfection. An HpSlyD binding protein was used to block HpSlyD's enzymatic activity. The expression of CDX2 and TCTP in gastric diseases was measured by immunohistochemistry. Our results showed HpSlyD induced CDX2 and VIL1 expressions. TCTP protein expression was markedly increased after application of HpSlyD and in an HpSlyD-expressing stable cell line. Downregulation of TCTP protein led to decreased HpSlyD-induced CDX2 and VIL1. Overexpression of TCTP protein improved the expression of CDX2 and VIL1. Co-application of HpSlyD and FK506 led to significant reductions in CDX2, VIL1, and TCTP expression. Immunohistochemistry demonstrated that CDX2 and TCTP expression was higher in HpslyD-positive specimens compared with HpslyD-negative ones. Expression of CDX2 was positively correlated with TCTP in HpslyD-positive cells. Our study is the first to show that HpSlyD induction of CDX2 and VIL1 expression mediated through TCTP may contribute to IM in the stomach.
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Affiliation(s)
- Qiuping Li
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang, 110001, China
| | - Yanmei Zhu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang, 110001, China.,Department of Pathology, Cancer Hospital of China Medical University; Liaoning Cancer Hospital & Institute, Shenyang, 110042, Liaoning Province, China
| | - Jun Liu
- Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV, 26506, USA.,Department of Physiology and Pharmacology, West Virginia University, Morgantown, WV, 26506-9229, USA
| | - Xiuwen Yu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang, 110001, China.,Department of Pathology, Qiqihar Medical College, Qiqihar, Heilongjiang, China
| | - Moye Chen
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang, 110001, China
| | - Nannan Dong
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang, 110001, China
| | - Yuehua Gong
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang, 110001, China.
| | - Yuan Yuan
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, the First Affiliated Hospital of China Medical University, and Key Laboratory of Cancer Etiology and Prevention (China Medical University), Liaoning Provincial Education Department, Shenyang, 110001, China.
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Oghalaie A, Saberi S, Esmaeili M, Ebrahimzadeh F, Barkhordari F, Ghamarian A, Tashakoripoor M, Abdirad A, Eshagh Hosseini M, Khalaj V, Mohammadi M. Helicobacter pylori Peptidyl Prolyl Isomerase Expression Is Associated with the Severity of Gastritis. J Gastrointest Cancer 2017; 47:375-380. [PMID: 27370181 DOI: 10.1007/s12029-016-9849-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE Helicobacter pylori secretory peptidyl prolyl isomerase, HP0175, is progressively identified as a pro-inflammatory and pro-carcinogenic protein, which serves to link H. pylori infection to its more severe clinical outcomes. Here, we have analyzed host HP0175-specific antibody responses in relation to the severity of gastritis. METHODS The HP0175 gene fragment was PCR-amplified, cloned, expressed and purified by Ni-NTA affinity chromatography. Serum antigen-specific antibody responses of non-ulcer dyspeptic patients (N = 176) against recombinant HP0175 were detected by western blotting. The infection status of these subjects was determined by rapid urease test, culture, histology, and serology. The grade of inflammation and stage of atrophy were scored blindly according to the OLGA staging system. RESULTS The recombinant HP0175 (rHP0175) was expressed as a ~35 kDa protein and its identity was confirmed by western blotting using anti-6X His tag antibody and pooled H. pylori-positive sera. Serum IgG antibodies against rHP0175 segregated our patients into two similar-sized groups of sero-positives (90/176, 51.1 %) and sero-negatives (86/176, 48.9 %). The former presented with higher grades of gastric inflammation (OR = 4.4, 95 % CI = 1.9-9.9, P = 0.001) and stages of gastric atrophy (OR = 18.3, 95 %CI = 1.4-246.6, P = 0.028). CONCLUSION Our findings lend further support to the pro-inflammatory nature of H. pylori peptidyl prolyl isomerase (HP0175) and recommends this antigen as a non-invasive serum biomarker of the severity of H. pylori-associated gastritis.
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Affiliation(s)
- Akbar Oghalaie
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Samaneh Saberi
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Maryam Esmaeili
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Fatemeh Ebrahimzadeh
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Farzaneh Barkhordari
- Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Abdolreza Ghamarian
- Fungal Biotechnology Lab, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Mohammad Tashakoripoor
- Department of Gastroenterology, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, 1145765111, Iran
| | - Afshin Abdirad
- Cancer Institute, Tehran University of Medical Sciences, Tehran, 141979733141, Iran
| | - Mahmoud Eshagh Hosseini
- Department of Gastroenterology, Amiralam Hospital, Tehran University of Medical Sciences, Tehran, 1145765111, Iran
| | - Vahid Khalaj
- Fungal Biotechnology Lab, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran
| | - Marjan Mohammadi
- HPGC Group, Department of Medical Biotechnology, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, 1316943551, Iran.
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Naveen V, Chu CH, Chen BW, Tsai YC, Hsiao CD, Sun YJ. Helicobacter pylori cell binding factor 2: Insights into domain motion. J Struct Biol 2016; 194:90-101. [PMID: 26850168 DOI: 10.1016/j.jsb.2016.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 12/22/2015] [Accepted: 02/02/2016] [Indexed: 12/18/2022]
Abstract
Helicobacter pylori cell binding factor 2 (HpCBF2) is an antigenic virulence factor belonging to the SurA-like peptidyl-prolyl cis-trans isomerase family with implications for pathogenicity in the human gastrointestinal tract. HpCBF2 possesses PPIase activity and could act as a periplasmic chaperone to regulate outer membrane protein assembly. Here, we measured the isomerization and chaperone activity of HpCBF2, and determined the crystal structure of HpCBF2 in complex with an inhibitor, indole-2-carboxylic acid (I2CA), at 2.4Å resolution. HpCBF2-I2CA forms a homodimer encasing a large central hydrophobic cavity with a basket-like structure, and each monomer contains a PPIase and a chaperone domain. In the HpCBF2-I2CA dimer, the two PPIase domains separate by a distance of 22.8Å, while the two chaperone domains arrange in a domain-swap manner. The PPIase domains bound with I2CA ligand face towards the chaperone domains and are shielded by surrounding hydrophobic residues. With the aid of SAXS experiments, we also revealed domain motion between the apo- and I2CA-bound states of HpCBF2. The domain motion in HpCBF2 might be necessary for the isomerization activity of PPIase and the accommodation of the unfolded and partially folded peptides to refold by chaperone domain.
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Affiliation(s)
- Vankadari Naveen
- Molecular Cell Biology, Taiwan International Graduate Program, Graduate Institute of Life Sciences, National Defense Medical Center and Academia Sinica, Taipei 115, Taiwan; Institute of Molecular Biology, Academia Sinica, Taipei 115, Taiwan
| | - Chen-Hsi Chu
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Bo-Wei Chen
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Yen-Chun Tsai
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Chwan-Deng Hsiao
- Molecular Cell Biology, Taiwan International Graduate Program, Graduate Institute of Life Sciences, National Defense Medical Center and Academia Sinica, Taipei 115, Taiwan; Institute of Molecular Biology, Academia Sinica, Taipei 115, Taiwan.
| | - Yuh-Ju Sun
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu 300, Taiwan.
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Zhu Y, Chen M, Gong Y, Liu Z, Li A, Kang D, Han F, Liu J, Liu J, Yuan Y. Helicobacter pylori FKBP-type PPIase promotes gastric epithelial cell proliferation and anchorage-independent growth through activation of ERK-mediated mitogenic signaling pathway. FEMS Microbiol Lett 2015; 362:fnv023. [DOI: 10.1093/femsle/fnv023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Abstract
AIM To investigate the biological activity of the H. pylori SlyD in vitro. METHODS Helicobacter pylori (H.pylori) slyD prokaryotic expression vector was carried out in Escherichia coli (E.coli), and recombination SlyD (rSlyD) was purified by immobilized metal affinity chromatography. The proliferation, apoptosis, invasion, transformation effects of rSlyD on AGS cells was detected by CCK-8, cell cycle, caspase-3 activity, matrigel invasion assay, and double-deck soft agar colony forming efficiency. In addition, the expressions of PCNA, KI-67, caspase-3, and MMP-9 were detected by western blot and immunofluorescence assay, respectively. RESULTS The CCK-8 assay revealed that cell proliferation was increased in a time and dose-dependent manner in AGS + rSlyD group compared with that of AGS or AGS + PBS group (p < .05). There are significant difference of PCNA and KI67 expressions among AGS, AGS + PBS, AGS + rSlyD groups (p < .05). Soft agar colony formation assay revealed the colony number (foci>100 μm) in AGS + rSlyD group was 26.3 ± 7.09, whereas 5.6 ± 1.15 in AGS and 5.0 ± 1.0 in AGS + PBS groups, respectively (p < .01). Colorimetric enzyme assay revealed the activity of caspase-3 was decreased to 31.45 ± 0.49 after treatment with rSlyD, whereas 55.5 ± 0.43 in AGS and 55.1 ± 0.25 in AGS + PBS group, respectively (p < .001). Similar caspase-3 expression also was confirmed by Western blot. The number of invasive cells in transwell chambers assay is 196.66 ± 40.41 in AGS + rSlyD group higher than 85 ± 22.9 in AGS or 81.66 ± 15.27 in AGS + PBS group, respectively (p < .001). The MMP-9 expression in AGS + rSlyD group was also higher than that of AGS or AGS + PBS group. CONCLUSION These results suggest that the HpSlyD may play an important role in disturbing cell proliferation, apoptosis, and enhancing cell transformation and invasion in the AGS cell line. HpSlyD might contribute to gastric pathogenicity in H.pylori-associated diseases.
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Affiliation(s)
- Dan Kang
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
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Hu L, Cheng T, He B, Li L, Wang Y, Lai YT, Jiang G, Sun H. Identification of Metal-Associated Proteins in Cells by Using Continuous-Flow Gel Electrophoresis and Inductively Coupled Plasma Mass Spectrometry. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300794] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Hu L, Cheng T, He B, Li L, Wang Y, Lai YT, Jiang G, Sun H. Identification of metal-associated proteins in cells by using continuous-flow gel electrophoresis and inductively coupled plasma mass spectrometry. Angew Chem Int Ed Engl 2013; 52:4916-20. [PMID: 23553936 DOI: 10.1002/anie.201300794] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Ligang Hu
- Department of Chemistry, The University of Hong Kong, Pokfulam, Hong Kong, P. R. China
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13
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Tanca A, Pisanu S, Biosa G, Pagnozzi D, Antuofermo E, Burrai GP, Canzonieri V, Cossu-Rocca P, De Re V, Eccher A, Fanciulli G, Rocca S, Uzzau S, Addis MF. Application of 2D-DIGE to formalin-fixed diseased tissue samples from hospital repositories: results from four case studies. Proteomics Clin Appl 2013; 7:252-63. [PMID: 23090899 DOI: 10.1002/prca.201200054] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 08/01/2012] [Accepted: 09/28/2012] [Indexed: 02/06/2023]
Abstract
PURPOSE In the recent past, the potential suitability of fixed samples to 2D-DIGE studies has been demonstrated on model tissues, but not on "real-world" archival tissues. Therefore, this study was aimed to assess the quality of the results delivered by 2D-DIGE on samples retrieved from hospital tissue repositories. EXPERIMENTAL DESIGN Diseased and normal tissue samples (namely, human gastric adenocarcinoma and normal gastric tissue, human lung neuroendocrine tumors, canine mammary tubulo-papillary carcinoma and normal mammary tissue, sheep liver with cloudy swelling degeneration and normal liver tissue) were retrieved from human and veterinary biorepositories and subjected to full-length protein extraction, cyanine labeling, 2D-DIGE separation, image analysis, MS analysis, and protein identification. RESULTS Archival samples could be successfully subjected to 2D-DIGE, providing maps of satisfactory resolution, although with varying pattern complexity (possibly influenced by preanalytical variables). Moreover, differentially expressed protein identities were consistent with the disease biology. CONCLUSIONS AND CLINICAL RELEVANCE 2D-DIGE can support biomarker discovery and validation studies on large sample cohorts. In fact, although some information complexity is lost when compared to fresh-frozen tissues, their vast availability and the associated patient information can considerably boost studies suffering limited sample availability or involving long-distance exchange of samples.
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Trivedi DK, Yadav S, Vaid N, Tuteja N. Genome wide analysis of Cyclophilin gene family from rice and Arabidopsis and its comparison with yeast. PLANT SIGNALING & BEHAVIOR 2012; 7:1653-66. [PMID: 23073011 PMCID: PMC3578907 DOI: 10.4161/psb.22306] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Cyclophilin proteins are the members of immunophillin group of proteins, known for their property of binding to the immune-suppressant drug cyclosporin A, hence named as cyclophilins. These proteins are characterized by the presence of peptidyl prolyl isomerase (PPIase) domain which catalyzes the cis-trans isomerisation process of proline residues. In the present study, an in-silico based approach was followed to identify and characterize the cyclophilin family from rice, Arabidopsis and yeast. We were able to identify 28 rice, 35 Arabidopsis and 8 yeast cyclophilin genes from their respective genomes on the basis of their annotation as well as the presence of highly conserved PPIase domain. The evolutionary relationship of the cyclophilin genes from the three genomes was analyzed using the phylogenetic tree. We have also classified the rice cyclophilin genes on the basis of localization of the protein in cell. The structural similarity of the cyclophilins was also analyzed on the basis of their homology model. The expression analysis performed using Genevestigator revealed a very strong stress responsive behavior of the gene family which was more prominent in later stages of stress. The study indicates the importance of the gene family in stress response as well as several developmental stages thus opening up many avenues for future study on the cyclophilin proteins.
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Chen MY, Yuan Y. Helicobacter pylori virulence factors that act at different stages of infection. Shijie Huaren Xiaohua Zazhi 2012; 20:2937-2943. [DOI: 10.11569/wcjd.v20.i30.2937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Helicobacter pylori (H. pylori) plays an essential role in the development of various gastroduodenal diseases, such as chronic superficial gastritis, peptic ulcer, gastric mucosa associated lymphoid tissue (MALT) lymphoma, and gastric adenocarcinoma. The diverse clinical outcomes after H. pylori infection are partly attributable to various H. pylori virulence factors. These virulence factors can act at different stages of infection, including (1) establishing successful colonization; (2) evading the host's immune system and (3) invading the gastric mucosa. In this paper, we review the recent advances in research of H. pylori virulence factors associated with the pathogenic process of H. pylori infection.
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Chen MY, Gong YH, Yuan Y. Differential distribution of the PPIase gene in Helicobacter pylori strains isolated from patients with different gastric diseases. Shijie Huaren Xiaohua Zazhi 2012; 20:155-159. [DOI: 10.11569/wcjd.v20.i2.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the distribution of the peptidyl-prolyl cis-trans isomerase (PPIase) gene in Helicobacter pylori (H. pylori) strains isolated from patients with different gastric diseases.
METHODS: Biopsy specimens were taken from the gastric mucosa of patients with superficial gastritis (GS), atrophic gastritis (GA) or gastric cancer (GC) and used to isolate a total of 64 H. pylori strains. The distribution of the PPIase gene in these strains was analyzed by PCR.
RESULTS: The GA group had the highest distribution frequency (94.4%) of the PPIase gene, which was significantly higher than those in the GS (57.7%) and GC (65.0%) groups (P = 0.014, 0.045). Although the frequency of the PPIase gene was higher in the GC group than in the GS group, there was no statistical difference between them (P > 0.05).
CONCLUSION: H. pylori strains isolated from patients with AG carried a higher frequency of the PPIase gene.
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