1
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Yimiti M, Fei X, Yang H, Yang X, Li S, Tuoheniyazi H, Liu D, Ma J, Xie J, Zheng J, Song Z, Li Q, Xu D, Zhao Y, Gu Z. HDAC6 inhibitor promotes reactive oxygen species-meditated clearance of Staphylococcus aureus in macrophage. Clin Exp Pharmacol Physiol 2024; 51:e13866. [PMID: 38719209 DOI: 10.1111/1440-1681.13866] [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: 02/23/2024] [Revised: 04/02/2024] [Accepted: 04/06/2024] [Indexed: 05/30/2024]
Abstract
Staphylococcus aureus (S. aureus) pneumonia has become an increasingly important public health problem. Recent evidence suggests that epigenetic modifications are critical in the host immune defence against pathogen infection. In this study, we found that S. aureus infection induces the expression of histone deacetylase 6 (HDAC6) in a dose-dependent manner. Furthermore, by using a S. aureus pneumonia mouse model, we showed that the HDAC6 inhibitor, tubastatin A, demonstrates a protective effect in S. aureus pneumonia, decreasing the mortality and destruction of lung architecture, reducing the bacterial burden in the lungs and inhibiting inflammatory responses. Mechanistic studies in primary bone marrow-derived macrophages demonstrated that the HDAC6 inhibitors, tubastatin A and tubacin, reduced the intracellular bacterial load by promoting bacterial clearance rather than regulating phagocytosis. Finally, N-acetyl-L- cysteine, a widely used reactive oxygen species (ROS) scavenger, antagonized ROS production and significantly inhibited tubastatin A-induced S. aureus clearance. These findings demonstrate that HDAC6 inhibitors promote the bactericidal activity of macrophages by inducing ROS, an important host factor for S. aureus clearance and production. Our study identified HDAC6 as a suitable epigenetic modification target for preventing S. aureus infection, and tubastatin A as a useful compound in treating S. aureus pneumonia.
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Affiliation(s)
- Maimaitiaili Yimiti
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xuefeng Fei
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hao Yang
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaobao Yang
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuhui Li
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huxidanmu Tuoheniyazi
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Danping Liu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junrui Ma
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jialing Xie
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Juanjuan Zheng
- Blood Transfusion Department, Qilu Hospital of Shandong University Dezhou Hospital, Dezhou, Shandong, China
| | - Zhen Song
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingtian Li
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Dakang Xu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanan Zhao
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Health Sciences and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhidong Gu
- Department of Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Laboratory Medicine, Ruijin-Hainan Hospital, Shanghai Jiao Tong University School of Medicine (Hainan Boao Research Hospital), Qionghai, Hainan, China
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2
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Guo M, Renshaw CP, Mull RW, Tal-Gan Y. Noncanonical Streptococcus sanguinis ComCDE circuitry integrates environmental cues in transformation outcome decision. Cell Chem Biol 2024; 31:298-311.e6. [PMID: 37832551 PMCID: PMC10922391 DOI: 10.1016/j.chembiol.2023.09.007] [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: 01/19/2023] [Revised: 07/25/2023] [Accepted: 09/18/2023] [Indexed: 10/15/2023]
Abstract
Natural competence is the principal driver of streptococcal evolution. While acquisition of new traits could facilitate rapid fitness improvement for bacteria, entry into the competent state is a highly orchestrated event, involving an interplay between various pathways. We present a new type of competence-predation coordination mechanism in Streptococcus sanguinis. Unlike other streptococci that mediate competence through the ComABCDE regulon, several key components are missing in the S. sanguinis ComCDE circuitry. We assembled two synthetic biology devices linking competence-stimulating peptide (CSP) cleavage and export with a quantifiable readout to unravel the unique features of the S. sanguinis circuitry. Our results revealed the ComC precursor cleavage pattern and the two host ABC transporters implicated in the export of the S. sanguinis CSP. Moreover, we discovered a ComCDE-dependent bacteriocin locus. Overall, this study presents a mechanism for commensal streptococci to maximize transformation outcome in a fluid environment through extensive circuitry rewiring.
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Affiliation(s)
- Mingzhe Guo
- Department of Chemistry, University of Nevada, Reno, 1664 N. Virginia St, Reno, NV 89557, USA
| | - Clay P Renshaw
- Department of Chemistry, University of Nevada, Reno, 1664 N. Virginia St, Reno, NV 89557, USA
| | - Ryan W Mull
- Department of Chemistry, University of Nevada, Reno, 1664 N. Virginia St, Reno, NV 89557, USA
| | - Yftah Tal-Gan
- Department of Chemistry, University of Nevada, Reno, 1664 N. Virginia St, Reno, NV 89557, USA.
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Chiu HW, Lee HL, Lee HH, Lu HW, Lin KYH, Lin YF, Lin CH. AIM2 promotes irradiation resistance, migration ability and PD-L1 expression through STAT1/NF-κB activation in oral squamous cell carcinoma. J Transl Med 2024; 22:13. [PMID: 38166970 PMCID: PMC10762966 DOI: 10.1186/s12967-023-04825-w] [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: 09/18/2023] [Accepted: 12/22/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Radioresistance and lymph node metastasis are common phenotypes of refractory oral squamous cell carcinoma (OSCC). As a result, understanding the mechanism for radioresistance and metastatic progression is urgently needed for the precise management of refractory OSCC. Recently, immunotherapies, e.g. immune checkpoint inhibitors (ICIs), were employed to treat refractory OSCC; however, the lack of predictive biomarkers still limited their therapeutic effectiveness. METHODS The Cancer Genome Atlas (TCGA)/Gene Expression Omnibus (GEO) databases and RT-PCR analysis were used to determine absent in melanoma 2 (AIM2) expression in OSCC samples. Colony-forming assay and trans-well cultivation was established for estimating AIM2 function in modulating the irradiation resistance and migration ability of OSCC cells, respectively. RT-PCR, Western blot and flow-cytometric analyses were performed to examine AIM2 effects on the expression of programmed death-ligand 1 (PD-L1) expression. Luciferase-based reporter assay and site-directed mutagenesis were employed to determine the transcriptional regulatory activity of Signal Transducer and Activator of Transcription 1 (STAT1) and NF-κB towards the AIM2-triggered PD-L1 expression. RESULTS Here, we found that AIM2 is extensively upregulated in primary tumors compared to the normal adjacent tissues and acts as a poor prognostic marker in OSCC. AIM2 knockdown mitigated, but overexpression promoted, radioresistance, migration and PD-L1 expression via modulating the activity of STAT1/NF-κB in OSCC cell variants. AIM2 upregulation significantly predicted a favorable response in patients receiving ICI treatments. CONCLUSIONS Our data unveil AIM2 as a critical factor for promoting radioresistance, metastasis and PD-L1 expression and as a potential biomarker for predicting ICI effectiveness on the refractory OSCC.
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Affiliation(s)
- Hui-Wen Chiu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Department of Medical Research, Shuang Ho Hospital, Taipei Medical University, New Taipei City, 23561, Taiwan
- TMU Research Center of Urology and Kidney, Taipei Medical University, Taipei, 11031, Taiwan
| | - Hsin-Lun Lee
- Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Department of Radiation Oncology, Taipei Medical University Hospital, Taipei, 11031, Taiwan
| | - Hsun-Hua Lee
- Department of Neurology, Taipei Medical University Hospital, Taipei Medical University, Taipei, 11031, Taiwan
- Department of Neurology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Department of Neurology, Vertigo and Balance Impairment Center, Shuang Ho Hospital, Taipei Medical University, New Taipei City, 23561, Taiwan
| | - Hsiao-Wei Lu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Department of Otolaryngology Head and Neck Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, 23561, Taiwan
- Department of Otolaryngology, Taipei Medical University Hospital, Taipei Medical University, Taipei, 11031, Taiwan
| | - Kent Yu-Hsien Lin
- Department of Obstetrics and Gynaecology, North Shore Private Hospital, Sydney, NSW, Australia
- Department of Gynecology, Ryde Hospital, Northern Sydney Local Health District, Sydney, NSW, Australia
- Northern Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Yuan-Feng Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, 11031, Taiwan
- Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei, 11696, Taiwan
| | - Che-Hsuan Lin
- Department of Otolaryngology, Taipei Medical University Hospital, Taipei Medical University, Taipei, 11031, Taiwan.
- Department of Otolaryngology, School of Medicine, College of Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan.
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4
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Chen HJ, Huang TX, Jiang YX, Chen X, Wang AF. Multifunctional roles of inflammation and its causative factors in primary liver cancer: A literature review. World J Hepatol 2023; 15:1258-1271. [PMID: 38223416 PMCID: PMC10784815 DOI: 10.4254/wjh.v15.i12.1258] [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] [Received: 08/21/2023] [Revised: 11/06/2023] [Accepted: 11/24/2023] [Indexed: 12/25/2023] Open
Abstract
Primary liver cancer is a severe and complex disease, leading to 800000 global deaths annually. Emerging evidence suggests that inflammation is one of the critical factors in the development of hepatocellular carcinoma (HCC). Patients with viral hepatitis, alcoholic hepatitis, and steatohepatitis symptoms are at higher risk of developing HCC. However, not all inflammatory factors have a pathogenic function in HCC development. The current study describes the process and mechanism of hepatitis development and its progression to HCC, particularly focusing on viral hepatitis, alcoholic hepatitis, and steatohepatitis. Furthermore, the roles of some essential inflammatory cytokines in HCC progression are described in addition to a summary of future research directions.
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Affiliation(s)
- Hong-Jin Chen
- Department of Pharmacology, School of Basic Medical Sciences, Translational Medicine Research Center, Guizhou Medical University, Guiyang 550025, Guizhou Province, China
| | - Ting-Xiong Huang
- School of Clinical Medical, Translational Medicine Research Center, Guizhou Medical University, Guiyang 550025, Guizhou Province, China
| | - Yu-Xi Jiang
- Zhejiang Provincial Key Laboratory of Medical Genetics, Key Laboratory of Laboratory Medicine, Ministry of Education, Wenzhou 325035, Zhejiang Province, China
| | - Xiong Chen
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, Zhejiang Province, China
- Department of Endocrinology, The People's Hospital of Yuhuan, The Yuhuan Branch of The First Affiliated Hospital of Wenzhou Medical University, Yuhuan 317600, Zhejiang Province, China
| | - Ai-Fang Wang
- Department of Endocrinology, The People's Hospital of Yuhuan, The Yuhuan Branch of The First Affiliated Hospital of Wenzhou Medical University, Yuhuan 317600, Zhejiang Province, China.
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5
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Brennan AA, Harrington A, Guo M, Renshaw CP, Tillett RL, Miura P, Tal-Gan Y. Investigating the Streptococcus sinensis competence regulon through a combination of transcriptome analysis and phenotypic evaluation. MICROBIOLOGY (READING, ENGLAND) 2022; 168. [PMID: 36282148 DOI: 10.1099/mic.0.001256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Streptococcus sinensis is a recently identified member of the Mitis group of streptococci. This species has been associated with infective endocarditis; however its mechanisms of pathogenesis and virulence are not fully understood. This study aimed to investigate the influence of the competence-stimulating peptide (CSP) and the competence regulon quorum-sensing circuitry (ComABCDE) on subsequent gene transcription and expression, as well as resultant phenotypes. In this study we confirmed the native CSP identity, ascertained when endogenous CSP was produced and completed a transcriptome-wide analysis of all genes following CSP exposure. RNA sequencing analysis revealed the upregulation of genes known to be associated with competence, biofilm formation and virulence. As such, a variety of phenotypic assays were utilized to assess the correlation between increased mRNA expression and potential phenotype response, ultimately gaining insight into the effects of CSP on both gene expression and developed phenotypes. The results indicated that the addition of exogenous CSP aided in competence development and successful transformation, yielding an average transformation efficiency comparable to that of other Mitis group streptococci. Additional studies are needed to further delineate the effects of CSP exposure on biofilm formation and virulence. Overall, this study provides novel information regarding S. sinensis and provides a substantial foundation on which this species and its role in disease pathogenesis can be further investigated.
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Affiliation(s)
- Alec A Brennan
- Department of Chemistry, University of Nevada, Reno, 1664 North Virginia Street, Reno, Nevada 89557, USA
| | - Anthony Harrington
- Department of Chemistry, University of Nevada, Reno, 1664 North Virginia Street, Reno, Nevada 89557, USA
| | - Mingzhe Guo
- Department of Chemistry, University of Nevada, Reno, 1664 North Virginia Street, Reno, Nevada 89557, USA
| | - Clay P Renshaw
- Department of Chemistry, University of Nevada, Reno, 1664 North Virginia Street, Reno, Nevada 89557, USA
| | - Richard L Tillett
- Nevada Center for Bioinformatics, University of Nevada, Reno, 1664 North Virginia Street, Reno, Nevada 89557, USA
| | - Pedro Miura
- Department of Biology, University of Nevada, Reno, 1664 North Virginia Street, Reno, Nevada 89557, USA
| | - Yftah Tal-Gan
- Department of Chemistry, University of Nevada, Reno, 1664 North Virginia Street, Reno, Nevada 89557, USA
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6
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Yu S, Ge H, Li S, Qiu HJ. Modulation of Macrophage Polarization by Viruses: Turning Off/On Host Antiviral Responses. Front Microbiol 2022; 13:839585. [PMID: 35222345 PMCID: PMC8874017 DOI: 10.3389/fmicb.2022.839585] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/12/2022] [Indexed: 11/17/2022] Open
Abstract
Macrophages are professional antigen-presenting cells and serve as the first line of defense against invading pathogens. Macrophages are polarized toward the proinflammatory classical (M1) or anti-inflammatory alternative (M2) phenotype upon viral infections. M1-polarized macrophages exert critical roles in antiviral responses via different mechanisms. Within the long competitive history between viruses and hosts, viruses have evolved various immune evasion strategies, inhibiting macrophage acquisition of an antiviral phenotype, impairing the antiviral responses of activated macrophages, and/or exploiting macrophage phenotypes for efficient replication. This review focuses on the sophisticated regulation of macrophage polarization utilized by viruses and is expected to provide systematic insights into the regulatory mechanisms of macrophage polarization by viruses and further facilitate the design of therapeutic targets for antivirals.
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PHAM HHS, FUJII Y, ARAKAWA K, HATABU T. Differential effects of orally administered <i>Lactobacillus acidophilus</i> L-55 on the gene expression of cytokines and master immune switches in the ileum and spleen of laying hen with an attenuated Newcastle disease virus vaccine. BIOSCIENCE OF MICROBIOTA, FOOD AND HEALTH 2022; 41:12-19. [PMID: 35036249 PMCID: PMC8727056 DOI: 10.12938/bmfh.2021-026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 07/26/2021] [Indexed: 11/17/2022]
Abstract
This study aimed to evaluate the benefits of oral administration of Lactobacillus
acidophilus strain L-55 (LaL-55) to chickens inoculated with a Newcastle
disease virus (NDV)-based live-attenuated vaccine by examining the mRNA expression of
several genes related to viral infection in the spleen and ileum by quantitative reverse
transcription polymerase chain reaction. In the spleen, interferon (IFN)-α was
significantly higher in the low- and middle-dose LaL-55 groups at 6 weeks than at 4 weeks.
IFN regulatory factor (IRF)-3 and IRF-7 expression was significantly higher in the
low-dose LaL-55 group than in the middle- and high-dose LaL-55 groups. In the ileum,
melanoma differentiation-associated gene 5 showed a dose-dependent increase at 4 weeks.
IFN-γ and IRF-7 showed dose-dependent increases at 6 weeks. These results suggested that
LaL-55 boosts the immune response to the NDV vaccine, albeit by different mechanisms in
the spleen and ileum.
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Affiliation(s)
- Hung Hoang Son PHAM
- Laboratory of Animal Physiology, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama 700-8530, Japan
| | - Yusuke FUJII
- Research & Development, Ohayo Dairy Products Co., Ltd., 565 Koshita, Naka-ku, Okayama-shi, Okayama 703-8505, Japan
| | - Kensuke ARAKAWA
- Laboratory of Animal Applied Microbiology, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama 700-8530, Japan
| | - Toshimitsu HATABU
- Laboratory of Animal Physiology, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama 700-8530, Japan
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