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Yue L, Cao H, Qi J, Yuan J, Wang X, Wang Y, Shan B, Ke H, Li H, Luan N, Liu C. Pretreatment with 3-methyladenine ameliorated Pseudomonas aeruginosa-induced acute pneumonia by inhibiting cell death of neutrophils in a mouse infection model. Int J Med Microbiol 2023; 313:151574. [PMID: 36736016 DOI: 10.1016/j.ijmm.2023.151574] [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: 02/07/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/21/2023] Open
Abstract
Pseudomonas aeruginosa is one of the leading causes of nosocomial infections worldwide. Clinical isolates that are resistant to multiple antimicrobials make it intractable. The interactions between P. aeruginosa and host cell death have multiple effects on bacterial clearance and inflammation; however, the potential intervention effects remain to be defined. Herein, we demonstrated that intravenous administration of 3-methyladenine before, but not after, P. aeruginosa infection enhanced autophagy-independent survival, which was accompanied by a decrease in the bacterial load, alleviation of pathology and reduction in inflammatory cytokines, in an acute pneumonia mouse model. Interestingly, these beneficial effects were not dependent on neutrophil recruitment or phagocytosis, but on the enhanced killing capacity induced by inhibiting the cell death of 3-MA pretreated neutrophils. These findings demonstrate a novel protective role of 3-MA pretreatment in P. aeruginosa-induced acute pneumonia.
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Affiliation(s)
- Lei Yue
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China
| | - Han Cao
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China
| | - Jialong Qi
- The First People's Hospital of Yunnan Province & Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, China
| | - Jin Yuan
- Department of Pathogen Biology and Immunology, Faculty of Basic Medical Science, Kunming Medical University, Kunming 650500, China
| | - Xin Wang
- Department of Pathogen Biology and Immunology, Faculty of Basic Medical Science, Kunming Medical University, Kunming 650500, China
| | - Yunfei Wang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China
| | - Bin Shan
- Department of Clinical Lab, The First Affiliated Hospital of Kunming Medical University, Kunming 650032, China
| | - Huaxin Ke
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China
| | - Hua Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China
| | - Ning Luan
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China.
| | - Cunbao Liu
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China.
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2
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Moshkelgosha S, Duong A, Wilson G, Andrews T, Berra G, Renaud-Picard B, Liu M, Keshavjee S, MacParland S, Yeung J, Martinu T, Juvet S. Interferon-stimulated and metallothionein-expressing macrophages are associated with acute and chronic allograft dysfunction after lung transplantation. J Heart Lung Transplant 2022; 41:1556-1569. [DOI: 10.1016/j.healun.2022.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 05/09/2022] [Accepted: 05/09/2022] [Indexed: 12/27/2022] Open
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3
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Tanno H, Kanno E, Sato S, Asao Y, Shimono M, Kurosaka S, Oikawa Y, Ishi S, Shoji M, Sato K, Kasamatsu J, Miyasaka T, Yamamoto H, Ishii K, Imai Y, Tachi M, Kawakami K. Contribution of Invariant Natural Killer T Cells to the Clearance of Pseudomonas aeruginosa from Skin Wounds. Int J Mol Sci 2021; 22:3931. [PMID: 33920301 PMCID: PMC8070359 DOI: 10.3390/ijms22083931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/05/2021] [Accepted: 04/08/2021] [Indexed: 12/13/2022] Open
Abstract
Chronic infections are considered one of the most severe problems in skin wounds, and bacteria are present in over 90% of chronic wounds. Pseudomonas aeruginosa is frequently isolated from chronic wounds and is thought to be a cause of delayed wound healing. Invariant natural killer T (iNKT) cells, unique lymphocytes with a potent regulatory ability in various inflammatory responses, accelerate the wound healing process. In the present study, we investigated the contribution of iNKT cells in the host defense against P. aeruginosa inoculation at the wound sites. We analyzed the re-epithelialization, bacterial load, accumulation of leukocytes, and production of cytokines and antimicrobial peptides. In iNKT cell-deficient (Jα18KO) mice, re-epithelialization was significantly decreased, and the number of live colonies was significantly increased, when compared with those in wild-type (WT) mice on day 7. IL-17A, and IL-22 production was significantly lower in Jα18KO mice than in WT mice on day 5. Furthermore, the administration of α-galactosylceramide (α-GalCer), a specific activator of iNKT cells, led to enhanced host protection, as shown by reduced bacterial load, and to increased production of IL-22, IL-23, and S100A9 compared that of with WT mice. These results suggest that iNKT cells promote P. aeruginosa clearance during skin wound healing.
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Grants
- a Grant-in-Aid for Scientific Research (B) (19H03918), The Ministry of Education, Culture, Sports, Science and Technology of Japan
- a Grant-in-Aid for Challenging Exploratory Research (17K19710) The Ministry of Education, Culture, Sports, Science and Technology of Japan
- a Grant-in-Aid for Young Scientists (17K17393) the Ministry of Education, Culture, Sports, Science and Technology of Japan
- a Grant-in-Aid for Young Scientists (19K19494) The Ministry of Education, Culture, Sports, Science and Technology of Japan
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Affiliation(s)
- Hiromasa Tanno
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Emi Kanno
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Suzuna Sato
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Yu Asao
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Mizuki Shimono
- Department of Science of Nursing Practice, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (E.K.); (S.S.); (Y.A.); (M.S.)
| | - Shiho Kurosaka
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Yukari Oikawa
- Department of Medical Microbiology, Mycology and Immunology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (Y.O.); (K.I.); (K.K.)
| | - Shinyo Ishi
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Miki Shoji
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Ko Sato
- Department of Intelligent Network for Infection Control, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (K.S.); (J.K.)
| | - Jun Kasamatsu
- Department of Intelligent Network for Infection Control, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (K.S.); (J.K.)
| | - Tomomitsu Miyasaka
- Division of Pathophysiology, Department of Pharmaceutical Sciences, Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Sendai 981-8558, Japan;
| | - Hideki Yamamoto
- Graduate School of Health Sciences, Niigata University, 2-746 Asahimachi-dori, Chuo-ku, Niigata 951-8518, Japan;
| | - Keiko Ishii
- Department of Medical Microbiology, Mycology and Immunology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (Y.O.); (K.I.); (K.K.)
| | - Yoshimichi Imai
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Masahiro Tachi
- Department of Plastic and Reconstructive Surgery, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (S.K.); (S.I.); (M.S.); (Y.I.); (M.T.)
| | - Kazuyoshi Kawakami
- Department of Medical Microbiology, Mycology and Immunology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (Y.O.); (K.I.); (K.K.)
- Department of Intelligent Network for Infection Control, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai 980-8575, Japan; (K.S.); (J.K.)
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4
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She P, Liu Y, Luo Z, Chen L, Zhou L, Hussain Z, Wu Y. PA2146 Gene Knockout Is Associated With Pseudomonas aeruginosa Pathogenicity in Macrophage and Host Immune Response. Front Cell Infect Microbiol 2020; 10:559803. [PMID: 33134189 PMCID: PMC7579411 DOI: 10.3389/fcimb.2020.559803] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 09/08/2020] [Indexed: 12/22/2022] Open
Abstract
Pseudomonas aeruginosa is a common gram-negative bacterium that usually causes nosocomial infection. The main pathogenicity of P. aeruginosa is caused by its virulence factors. PA2146 is reported to be a potential virulence-regulating gene and is highly expressed in the biofilms of P. aeruginosa. However, the effect of PA2146 mutant (PAO1ΔPA2146) on the macrophage immune response and murine models has not been reported. In the present study, PA2146 knockout was performed by homologous recombination. We found that PAO1ΔPA2146 stimulation significantly increased pyocyanin production but inhibited interleukin-6 secretion by neutrophils compared to PAO1 stimulation. In addition, PAO1ΔPA2146 treatment significantly inhibited cytokine production in macrophages independent of cell killing. In an acute pneumonia murine infection model, treatment with P. aeruginosa infected with PAO1ΔPA2146 inhibited cytokine secretion in the lungs but increased the infiltration of inflammatory cells compared to the wild-type group. The paradoxical results indicate that PA2146 deletion may also increase the production of virulence factors other than pyocyanin, which may not only increase inflammatory cell infiltration in the lungs but also lead to immune cells “shock.” Overall, our findings suggest that PA2146 could serve as a P. aeruginosa virulence-regulating gene that regulates its macrophage and host immune response.
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Affiliation(s)
- Pengfei She
- Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yiqing Liu
- Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Zhen Luo
- Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Lihua Chen
- Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Linying Zhou
- Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Zubair Hussain
- Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Yong Wu
- Department of Clinical Laboratory, The Third Xiangya Hospital of Central South University, Changsha, China
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5
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Matic S, D’Souza DH, Wu T, Pangloli P, Dia VP. Bovine Milk Exosomes Affect Proliferation and Protect Macrophages against Cisplatin-Induced Cytotoxicity. Immunol Invest 2020; 49:711-725. [DOI: 10.1080/08820139.2020.1769647] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Svjetlana Matic
- Department of Food Science, University of Tennessee, Knoxville, Tennessee, USA
| | - Doris H. D’Souza
- Department of Food Science, University of Tennessee, Knoxville, Tennessee, USA
| | - Tao Wu
- Department of Food Science, University of Tennessee, Knoxville, Tennessee, USA
| | - Philipus Pangloli
- Department of Food Science, University of Tennessee, Knoxville, Tennessee, USA
| | - Vermont P. Dia
- Department of Food Science, University of Tennessee, Knoxville, Tennessee, USA
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6
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Ljungberg JK, Kling JC, Tran TT, Blumenthal A. Functions of the WNT Signaling Network in Shaping Host Responses to Infection. Front Immunol 2019; 10:2521. [PMID: 31781093 PMCID: PMC6857519 DOI: 10.3389/fimmu.2019.02521] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 10/10/2019] [Indexed: 12/15/2022] Open
Abstract
It is well-established that aberrant WNT expression and signaling is associated with developmental defects, malignant transformation and carcinogenesis. More recently, WNT ligands have emerged as integral components of host responses to infection but their functions in the context of immune responses are incompletely understood. Roles in the modulation of inflammatory cytokine production, host cell intrinsic innate defense mechanisms, as well as the bridging of innate and adaptive immunity have been described. To what degree WNT responses are defined by the nature of the invading pathogen or are specific for subsets of host cells is currently not well-understood. Here we provide an overview of WNT responses during infection with phylogenetically diverse pathogens and highlight functions of WNT ligands in the host defense against infection. Detailed understanding of how the WNT network orchestrates immune cell functions will not only improve our understanding of the fundamental principles underlying complex immune response, but also help identify therapeutic opportunities or potential risks associated with the pharmacological targeting of the WNT network, as currently pursued for novel therapeutics in cancer and bone disorders.
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Affiliation(s)
- Johanna K Ljungberg
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Jessica C Kling
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Thao Thanh Tran
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Antje Blumenthal
- The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, QLD, Australia
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7
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Silva-García O, Valdez-Alarcón JJ, Baizabal-Aguirre VM. Wnt/β-Catenin Signaling as a Molecular Target by Pathogenic Bacteria. Front Immunol 2019; 10:2135. [PMID: 31611869 PMCID: PMC6776594 DOI: 10.3389/fimmu.2019.02135] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 08/27/2019] [Indexed: 12/31/2022] Open
Abstract
The Wnt/β-catenin signaling pathway is crucial to regulate cell proliferation and polarity, cell determination, and tissue homeostasis. The activation of Wnt/β-catenin signaling is based on the interaction between Wnt glycoproteins and seven transmembrane receptors-Frizzled (Fzd). This binding promotes recruitment of the scaffolding protein Disheveled (Dvl), which results in the phosphorylation of the co-receptor LRP5/6. The resultant molecular complex Wnt-Fzd-LRP5/6-Dvl forms a structural region for Axin interaction that disrupts Axin-mediated phosphorylation/degradation of the transcriptional co-activator β-catenin, thereby allowing it to stabilize and accumulate in the nucleus where it activates the expression of Wnt-dependent genes. Due to the prominent physiological function, the Wnt/β-catenin signaling must be strictly controlled because its dysregulation, which is caused by different stimuli, may lead to alterations in cell proliferation, apoptosis, and inflammation-associated cancer. The virulence factors from pathogenic bacteria such as Salmonella enterica sv Typhimurium, Helicobacter pylori, Mycobacterium tuberculosis, Pseudomonas aeruginosa, Citrobacter rodentium, Clostridium difficile, Bacteroides fragilis, Escherichia coli, Haemophilus parasuis, Lawsonia intracellularis, Shigella dysenteriae, and Staphylococcus epidermidis employ a variety of molecular strategies to alter the appropriate functioning of diverse signaling pathways. Among these, Wnt/β-catenin has recently emerged as an important target of several virulence factors produced by bacteria. The mechanisms used by these factors to interfere with the activity of Wnt/β-catenin is diverse and include the repression of Wnt inhibitors' expression by the epigenetic modification of histones, blocking Wnt-Fzd ligand binding, activation or inhibition of β-catenin nuclear translocation, down- or up-regulation of Wnt family members, and inhibition of Axin-1 expression that promotes β-catenin activity. Such a variety of mechanisms illustrate an evolutionary co-adaptation of eukaryotic molecular signaling to a battery of soluble or structural components synthesized by pathogenic bacteria. This review gathers the recent efforts to elucidate the mechanistic details through which bacterial virulence factors modulate Wnt/β-catenin signaling and its physiological consequences concerning the inflammatory response and cancer.
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Affiliation(s)
| | - Juan J Valdez-Alarcón
- Centro Multidisciplinario de Estudios en Biotecnología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Víctor M Baizabal-Aguirre
- Centro Multidisciplinario de Estudios en Biotecnología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
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8
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Chu CW, Ko HJ, Chou CH, Cheng TS, Cheng HW, Liang YH, Lai YL, Lin CY, Wang C, Loh JK, Cheng JT, Chiou SJ, Su CL, Huang CYF, Hong YR. Thioridazine Enhances P62-Mediated Autophagy and Apoptosis Through Wnt/β-Catenin Signaling Pathway in Glioma Cells. Int J Mol Sci 2019; 20:ijms20030473. [PMID: 30678307 PMCID: PMC6386927 DOI: 10.3390/ijms20030473] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 01/18/2019] [Indexed: 12/12/2022] Open
Abstract
Thioridazine (THD) is a common phenothiazine antipsychotic drug reported to suppress growth in several types of cancer cells. We previously showed that THD acts as an antiglioblastoma and anticancer stem-like cell agent. However, the signaling pathway underlying autophagy and apoptosis induction remains unclear. THD treatment significantly induced autophagy with upregulated AMPK activity and engendered cell death with increased sub-G1 in glioblastoma multiform (GBM) cell lines. Notably, through whole gene expression screening with THD treatment, frizzled (Fzd) proteins, a family of G-protein-coupled receptors, were found, suggesting the participation of Wnt/β-catenin signaling. After THD treatment, Fzd-1 and GSK3β-S9 phosphorylation (inactivated form) was reduced to promote β-catenin degradation, which attenuated P62 inhibition. The autophagy marker LC3-II markedly increased when P62 was released from β-catenin inhibition. Additionally, the P62-dependent caspase-8 activation that induced P53-independent apoptosis was confirmed by inhibiting T-cell factor/β-catenin and autophagy flux. Moreover, treatment with THD combined with temozolomide (TMZ) engendered increased LC3-II expression and caspase-3 activity, indicating promising drug synergism. In conclusion, THD induces autophagy in GBM cells by not only upregulating AMPK activity, but also enhancing P62-mediated autophagy and apoptosis through Wnt/β-catenin signaling. Therefore, THD is a potential alternative therapeutic agent for drug repositioning in GBM.
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Affiliation(s)
- Cheng-Wei Chu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-W.C.); (H.-J.K.); (C.-H.C.); (Y.-L.L.); (C.-Y.L.); (J.-K.L.); (S.-J.C.)
- Division of Neurosurgery, Department of Surgery, Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung 801, Taiwan
| | - Huey-Jiun Ko
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-W.C.); (H.-J.K.); (C.-H.C.); (Y.-L.L.); (C.-Y.L.); (J.-K.L.); (S.-J.C.)
| | - Chia-Hua Chou
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-W.C.); (H.-J.K.); (C.-H.C.); (Y.-L.L.); (C.-Y.L.); (J.-K.L.); (S.-J.C.)
| | - Tai-Shan Cheng
- Department of Biotechnology and Laboratory Science in Medicine, Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei 112, Taiwan; (T.-S.C.); (H.-W.C.); (Y.-H.L.)
| | - Hui-Wen Cheng
- Department of Biotechnology and Laboratory Science in Medicine, Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei 112, Taiwan; (T.-S.C.); (H.-W.C.); (Y.-H.L.)
| | - Yu-Hsin Liang
- Department of Biotechnology and Laboratory Science in Medicine, Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei 112, Taiwan; (T.-S.C.); (H.-W.C.); (Y.-H.L.)
| | - Yun-Ling Lai
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-W.C.); (H.-J.K.); (C.-H.C.); (Y.-L.L.); (C.-Y.L.); (J.-K.L.); (S.-J.C.)
| | - Chen-Yen Lin
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-W.C.); (H.-J.K.); (C.-H.C.); (Y.-L.L.); (C.-Y.L.); (J.-K.L.); (S.-J.C.)
| | - Chihuei Wang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Joon-Khim Loh
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-W.C.); (H.-J.K.); (C.-H.C.); (Y.-L.L.); (C.-Y.L.); (J.-K.L.); (S.-J.C.)
- Department of Neurosurgery, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Jiin-Tsuey Cheng
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;
| | - Shean-Jaw Chiou
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-W.C.); (H.-J.K.); (C.-H.C.); (Y.-L.L.); (C.-Y.L.); (J.-K.L.); (S.-J.C.)
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Department of Biochemistry & Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chun-Li Su
- Department of Human Development and Family Studies, National Taiwan Normal University, Taipei 106, Taiwan;
| | - Chi-Ying F. Huang
- Department of Biotechnology and Laboratory Science in Medicine, Institute of Biopharmaceutical Sciences, National Yang-Ming University, Taipei 112, Taiwan; (T.-S.C.); (H.-W.C.); (Y.-H.L.)
- Department of Biochemistry & Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Correspondence: (C.-Y.F.H.); (Y.-R.H.)
| | - Yi-Ren Hong
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (C.-W.C.); (H.-J.K.); (C.-H.C.); (Y.-L.L.); (C.-Y.L.); (J.-K.L.); (S.-J.C.)
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;
- Department of Biochemistry & Graduate Institute of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Correspondence: (C.-Y.F.H.); (Y.-R.H.)
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9
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Jati S, Kundu S, Chakraborty A, Mahata SK, Nizet V, Sen M. Wnt5A Signaling Promotes Defense Against Bacterial Pathogens by Activating a Host Autophagy Circuit. Front Immunol 2018; 9:679. [PMID: 29686674 PMCID: PMC5900007 DOI: 10.3389/fimmu.2018.00679] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 03/20/2018] [Indexed: 12/14/2022] Open
Abstract
Bacterial pathogens are associated with severe infections (e.g., sepsis) and exacerbation of debilitating conditions such as chronic obstructive pulmonary disease (COPD). The interactions of bacterial pathogens with macrophages, a key component of innate immunity and host defense, are not clearly understood and continue to be intensively studied. Having previously demonstrated a role of Wnt5A signaling in phagocytosis, we proceeded to decipher the connection of Wnt5A signaling with infection by pathogenic bacteria, namely Pseudomonas aeruginosa (PA) and Streptococcus pneumoniae (SP), which are related with the progression of COPD and sepsis. We found that during the initial hours of infection with PA and SP, there is decrease in the steady state levels of the Wnt5A protein in macrophages. Suppression of Wnt5A signaling, moreover, impairs macrophage clearance of the bacterial infection both in vitro and in vivo. Activation of Wnt5A signaling, on the other hand, enhances clearance of the infection. Macrophage-mediated containment of bacterial infection in our study is dependant on Wnt5A-induced Rac1/Disheveled activation and cytochalasin D inhibitable actin assembly, which is associated with ULK1 kinase activity and LC3BII accumulation. Our experimental findings are consistent with Wnt5A signaling-dependent induction of autophagic killing (xenophagy) of PA and SP, as further substantiated by transmission electron microscopy. Overall, our study unveils the prevalence of a Wnt5A-Rac1-Disheveled-mediated actin-associated autophagy circuit as an important component of innate immunity in host macrophages that may turn out crucial for restricting infection by leading bacterial pathogens.
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Affiliation(s)
- Suborno Jati
- Division of Cancer Biology and Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Suman Kundu
- Division of Cancer Biology and Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Arijit Chakraborty
- Division of Cancer Biology and Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Sushil Kumar Mahata
- Department of Medicine, VA San Diego Healthcare System and University of California, San Diego, La Jolla, CA, United States
| | - Victor Nizet
- Department of Pediatrics and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, United States
| | - Malini Sen
- Division of Cancer Biology and Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, Kolkata, India
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