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Jin LL, He MY, Zhou H, Xie WP, Kong H. [Effects of macrophage glycolytic reprogramming on tuberculosis granuloma formation]. Zhonghua Jie He He Hu Xi Za Zhi 2023; 46:834-838. [PMID: 37536997 DOI: 10.3760/cma.j.cn112147-20221119-00912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
The formation of granulomatous lesions is a typical pathological feature of tuberculosis, and infection with Mycobacterium tuberculosis is the main cause. Although the mechanism underlying granuloma formation remains unclear, increasing evidence suggests that immune metabolism plays an important role. In this review, we summarized the latest advances in macrophage glycolytic reprogramming in tuberculosis granuloma formation to discover new methods for early diagnosis and provided new ideas for tuberculosis therapeutics based on the regulation of immune metabolism.
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Affiliation(s)
- L L Jin
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - M Y He
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H Zhou
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - W P Xie
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - H Kong
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Jin LL, Wybenga-Groot LE, Tong J, Taylor P, Minden MD, Trudel S, McGlade CJ, Moran MF. Tyrosine phosphorylation of the Lyn Src homology 2 (SH2) domain modulates its binding affinity and specificity. Mol Cell Proteomics 2015; 14:695-706. [PMID: 25587033 DOI: 10.1074/mcp.m114.044404] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Src homology 2 (SH2) domains are modular protein structures that bind phosphotyrosine (pY)-containing polypeptides and regulate cellular functions through protein-protein interactions. Proteomics analysis showed that the SH2 domains of Src family kinases are themselves tyrosine phosphorylated in blood system cancers, including acute myeloid leukemia, chronic lymphocytic leukemia, and multiple myeloma. Using the Src family kinase Lyn SH2 domain as a model, we found that phosphorylation at the conserved SH2 domain residue Y(194) impacts the affinity and specificity of SH2 domain binding to pY-containing peptides and proteins. Analysis of the Lyn SH2 domain crystal structure supports a model wherein phosphorylation of Y(194) on the EF loop modulates the binding pocket that engages amino acid side chains at the pY+2/+3 position. These data indicate another level of regulation wherein SH2-mediated protein-protein interactions are modulated by SH2 kinases and phosphatases.
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Affiliation(s)
- Lily L Jin
- From the ‡Molecular Structure and Function, The Hospital For Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada; ‡‡Departments of Molecular Genetics, Medical Science Building, Room 4386, 1 King's College Circle, Toronto, ON M5S 1A8, Canada
| | - Leanne E Wybenga-Groot
- §Cell Biology, The Hospital For Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada; ¶The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital For Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada
| | - Jiefei Tong
- From the ‡Molecular Structure and Function, The Hospital For Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada
| | - Paul Taylor
- From the ‡Molecular Structure and Function, The Hospital For Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada
| | - Mark D Minden
- ‖Medical Biophysics, University of Toronto, Medical Science Building, Room 4386, 1 King's College Circle, Toronto, ON M5S 1A8, Canada; **The Princess Margaret Cancer Center, 610 University Avenue, M5G 2M9, Toronto, Canada
| | - Suzanne Trudel
- ‖Medical Biophysics, University of Toronto, Medical Science Building, Room 4386, 1 King's College Circle, Toronto, ON M5S 1A8, Canada; **The Princess Margaret Cancer Center, 610 University Avenue, M5G 2M9, Toronto, Canada
| | - C Jane McGlade
- §Cell Biology, The Hospital For Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada; ¶The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital For Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada; ‖Medical Biophysics, University of Toronto, Medical Science Building, Room 4386, 1 King's College Circle, Toronto, ON M5S 1A8, Canada
| | - Michael F Moran
- From the ‡Molecular Structure and Function, The Hospital For Sick Children, 686 Bay Street, Toronto, M5G 0A4, Canada; ‡‡Departments of Molecular Genetics, Medical Science Building, Room 4386, 1 King's College Circle, Toronto, ON M5S 1A8, Canada; **The Princess Margaret Cancer Center, 610 University Avenue, M5G 2M9, Toronto, Canada
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Abstract
OBJECTIVE A meta-analysis to compare the incidence of postoperative cognitive dysfunction (POCD) following off-pump coronary artery bypass grafting (OPCAB) versus after conventional coronary artery bypass grafting (CABG). METHODS A systematic search of the Medline(®), EMBASE(®) and Cochrane Library databases was performed to identify randomized controlled trials published until the end of November 2011. Data were analysed using RevMan version 5.0 software. RESULTS The literature search identified 13 randomized controlled trials which included a total of 2326 cases. Meta-analysis found that the incidence of POCD was significantly higher following CABG than after OPCAB during the perioperative period (1-2 weeks) and at 3 months postsurgery. There were no significant between-group differences at 6 or 12 months postsurgery. CONCLUSIONS Compared with CABG, OPCAB was found to be associated with a reduced incidence of early-stage POCD. Caution must be taken when interpreting these findings because of limitations in the available data.
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Affiliation(s)
- J H Sun
- Department of Anaesthesia, The First Affiliated Hospital, Wenzhou Medical College, 2 Fu-Xue Street, Lucheng District, Wenzhou, China.
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Wen M, Jin LL, Wang HY, Wang Z, Shen BF, Lu YR, Chen JE, Yan XQ. Determination of carrier-envelope phase of relativistic few-cycle laser pulses by Thomson backscattering spectroscopy. Phys Rev E Stat Nonlin Soft Matter Phys 2012; 85:035401. [PMID: 22587142 DOI: 10.1103/physreve.85.035401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Indexed: 05/31/2023]
Abstract
A method is proposed to determine the carrier-envelope phase (CEP) of a relativistic few-cycle laser pulse via the frequency of the Thomson backscattering (TBS) light. We theoretically investigate the generation of a flying mirror when a few-cycle drive pulse with relativistic intensity interacts with a target combined with a thin and a thick foil. The frequency of the TBS light generated from the flying mirror shows a sensitive dependence on the CEP of the drive pulse. The obtained results are verified by one-dimensional particle-in-cell simulations and are explained by an analytical model.
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Affiliation(s)
- M Wen
- State Key Laboratory of Nuclear Physics and Technology, Center for Applied Physics and Technology (CAPT), Peking University, Beijing 100871, China.
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Karisch R, Fernandez M, Taylor P, Virtanen C, St-Germain JR, Jin LL, Harris IS, Mori J, Mak TW, Senis YA, Östman A, Moran MF, Neel BG. Global proteomic assessment of the classical protein-tyrosine phosphatome and "Redoxome". Cell 2011; 146:826-40. [PMID: 21884940 DOI: 10.1016/j.cell.2011.07.020] [Citation(s) in RCA: 133] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2010] [Revised: 05/06/2011] [Accepted: 07/01/2011] [Indexed: 12/30/2022]
Abstract
Protein-tyrosine phosphatases (PTPs), along with protein-tyrosine kinases, play key roles in cellular signaling. All Class I PTPs contain an essential active site cysteinyl residue, which executes a nucleophilic attack on substrate phosphotyrosyl residues. The high reactivity of the catalytic cysteine also predisposes PTPs to oxidation by reactive oxygen species, such as H(2)O(2). Reversible PTP oxidation is emerging as an important cellular regulatory mechanism and might contribute to diseases such as cancer. We exploited these unique features of PTP enzymology to develop proteomic methods, broadly applicable to cell and tissue samples, that enable the comprehensive identification and quantification of expressed classical PTPs (PTPome) and the oxidized subset of the PTPome (oxPTPome). We find that mouse and human cells and tissues, including cancer cells, display distinctive PTPomes and oxPTPomes, revealing additional levels of complexity in the regulation of protein-tyrosine phosphorylation in normal and malignant cells.
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Affiliation(s)
- Robert Karisch
- Department of Medical Biophysics, University of Toronto, Toronto M5G 2M9, ON, Canada.
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Tong J, Taylor P, Jovceva E, St-Germain JR, Jin LL, Nikolic A, Gu X, Li ZH, Trudel S, Moran MF. Tandem Immunoprecipitation of Phosphotyrosine-Mass Spectrometry (TIPY-MS) Indicates C19ORF19 Becomes Tyrosine-Phosphorylated and Associated with Activated Epidermal Growth Factor Receptor. J Proteome Res 2008; 7:1067-77. [DOI: 10.1021/pr7006363] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jiefei Tong
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Paul Taylor
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Eleonora Jovceva
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Jonathan R. St-Germain
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Lily L. Jin
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Ana Nikolic
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Xiaoping Gu
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Zhi Hua Li
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Suzanne Trudel
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
| | - Michael F. Moran
- Program in Molecular Structure and Function, Hospital for Sick Children, Department of Molecular Genetics, and Banting & Best Department of Medical Research, University of Toronto, Toronto, Canada, McLaughlin Centre for Molecular Medicine, Toronto, Canada, and Hematology-Oncology, Princess Margaret Hospital, Toronto, Canada
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Sultan F, Jin LL, Jobling MG, Holmes RK, Stanley SL. Mucosal immunogenicity of a holotoxin-like molecule containing the serine-rich Entamoeba histolytica protein (SREHP) fused to the A2 domain of cholera toxin. Infect Immun 1998; 66:462-8. [PMID: 9453596 PMCID: PMC107928 DOI: 10.1128/iai.66.2.462-468.1998] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
One strategy for the induction of mucosal immune responses by oral immunization is to administer the antigen in conjunction with cholera toxin. Cholera toxin consists of one A polypeptide (CTA) which is noncovalently linked to five B subunits (CTB) via the A2 portion of the A subunit (CTA2). Coupling of antigens to the nontoxic B subunit of cholera toxin may improve the immunogenicity of antigens by targeting them to GM1 ganglioside on M cells and intestinal epithelial cells. Here, we describe the construction of a translational fusion protein containing the serine-rich Entamoeba histolytica protein (SREHP), a protective amebic antigen, fused to a maltose binding protein (MBP) and to CTA2. When coexpressed in Escherichia coli with the CTB gene, these proteins assembled into a holotoxin-like chimera containing MBP-SREHP-CTA2 and CTB. This holotoxin-like chimera (SREHP-H) inhibited the binding of cholera toxin to GM1 ganglioside. Oral vaccination of mice with SREHP-H induced mucosal immunoglobulin A (IgA) and serum IgG antiamebic antibodies and low levels of mucosal anti-CTB antibodies. Our studies confirm that the genetic coupling of antigens to CTA2 and their coexpression in E. coli can produce holotoxin-like molecules that are mucosally immunogenic without the requirement for supplemental cholera toxin, and they establish the SREHP-H protein as a candidate for evaluation as a vaccine to prevent amebiasis.
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Affiliation(s)
- F Sultan
- Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA
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