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Li W, Gurdziel K, Pitchaikannu A, Gupta N, Hazlett LD, Xu S. The miR-183/96/182 cluster is a checkpoint for resident immune cells and shapes the cellular landscape of the cornea. Ocul Surf 2023; 30:17-41. [PMID: 37536656 PMCID: PMC10834862 DOI: 10.1016/j.jtos.2023.07.012] [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: 01/30/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/05/2023]
Abstract
PURPOSE The conserved miR-183/96/182 cluster (miR-183C) regulates both corneal sensory innervation and corneal resident immune cells (CRICs). This study is to uncover its role in CRICs and in shaping the corneal cellular landscape at a single-cell (sc) level. METHODS Corneas of naïve, young adult [2 and 6 months old (mo)], female miR-183C knockout (KO) mice and wild-type (WT) littermates were harvested and dissociated into single cells. Dead cells were removed using a Dead Cell Removal kit. CD45+ CRICs were enriched by Magnetic Activated Cell Sorting (MACS). scRNA libraries were constructed and sequenced followed by comprehensive bioinformatic analyses. RESULTS The composition of major cell types of the cornea stays relatively stable in WT mice from 2 to 6 mo, however the compositions of subtypes of corneal cells shift with age. Inactivation of miR-183C disrupts the stability of the major cell-type composition and age-related transcriptomic shifts of subtypes of corneal cells. The diversity of CRICs is enhanced with age. Naïve mouse cornea contains previously-unrecognized resident fibrocytes and neutrophils. Resident macrophages (ResMφ) adopt cornea-specific function by expressing abundant extracellular matrix (ECM) and ECM organization-related genes. Naïve cornea is endowed with partially-differentiated proliferative ResMφ and contains microglia-like Mφ. Resident lymphocytes, including innate lymphoid cells (ILCs), NKT and γδT cells, are the major source of innate IL-17a. miR-183C limits the diversity and polarity of ResMφ. CONCLUSION miR-183C serves as a checkpoint for CRICs and imposes a global regulation of the cellular landscape of the cornea.
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Affiliation(s)
- Weifeng Li
- Predoctoral Training Program in Human Genetics, McKusick-Nathans Institute of Genetic Medicine, Department of Genetic Medicine, USA; Wilmer Eye Institute, School of Medicine, The Johns Hopkins University, Baltimore, MD, USA
| | | | - Ahalya Pitchaikannu
- Department of Ophthalmology, Visual and Anatomical Sciences, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Naman Gupta
- Department of Ophthalmology, Visual and Anatomical Sciences, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Linda D Hazlett
- Department of Ophthalmology, Visual and Anatomical Sciences, School of Medicine, Wayne State University, Detroit, MI, USA
| | - Shunbin Xu
- Department of Ophthalmology, Visual and Anatomical Sciences, School of Medicine, Wayne State University, Detroit, MI, USA.
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Sumioka T, Matsumoto KI, Reinach PS, Saika S. Tenascins and osteopontin in biological response in cornea. Ocul Surf 2023; 29:131-149. [PMID: 37209968 DOI: 10.1016/j.jtos.2023.05.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/01/2023] [Accepted: 05/16/2023] [Indexed: 05/22/2023]
Abstract
The structural composition, integrity and regular curvature of the cornea contribute to the maintenance of its transparency and vision. Disruption of its integrity caused by injury results in scarring, inflammation and neovascularization followed by losses in transparency. These sight compromising effects is caused by dysfunctional corneal resident cell responses induced by the wound healing process. Upregulation of growth factors/cytokines and neuropeptides affect development of aberrant behavior. These factors trigger keratocytes to first transform into activated fibroblasts and then to myofibroblasts. Myofibroblasts express extracellular matrix components for tissue repair and contract the tissue to facilitate wound closure. Proper remodeling following primary repair is critical for restoration of transparency and visual function. Extracellular matrix components contributing to the healing process are divided into two groups; a group of classical tissue structural components and matrix macromolecules that modulate cell behaviors/activities besides being integrated into the matrix structure. The latter components are designated as matricellular proteins. Their functionality is elicited through mechanisms which modulate the scaffold integrity, cell behaviors, activation/inactivation of either growth factors or cytoplasmic signaling regulation. We discuss here the functional roles of matricellular proteins in mediating injury-induced corneal tissue repair. The roles are described of major matricellular proteins, which include tenascin C, tenascin X and osteopontin. Focus is directed towards dealing with their roles in modulating individual activities of wound healing-related growth factors, e. g., transforming growth factor β (TGF β). Modulation of matricellular protein functions could encompass a potential novel strategy to improve the outcome of injury-induced corneal wound healing.
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Affiliation(s)
- Takayoshi Sumioka
- Department of Ophthalmology, Wakayama Medical University School of Medicine, 811-1 Kimiidera, 641-0012, Japan.
| | - Ken-Ichi Matsumoto
- Department of Biosignaling and Radioisotope Experiment, Interdisciplinary Center for Science Research, Head Office for Research and Academic Information, Shimane University, 89-1 Enya-cho, Izumo, 693-8501, Japan
| | - Peter Sol Reinach
- Department of Biological. Sciences SUNY Optometry, New York, NY, 10036, USA
| | - Shizuya Saika
- Department of Ophthalmology, Wakayama Medical University School of Medicine, 811-1 Kimiidera, 641-0012, Japan
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Filiberti A, Gmyrek GB, Berube AN, Carr DJJ. Osteopontin contributes to virus resistance associated with type I IFN expression, activation of downstream ifn-inducible effector genes, and CCR2 +CD115 +CD206 + macrophage infiltration following ocular HSV-1 infection of mice. Front Immunol 2023; 13:1028341. [PMID: 36685562 PMCID: PMC9846535 DOI: 10.3389/fimmu.2022.1028341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 12/05/2022] [Indexed: 01/06/2023] Open
Abstract
Ocular pathology is often associated with acute herpes simplex virus (HSV)-1 infection of the cornea in mice. The present study was undertaken to determine the role of early T lymphocyte activation 1 protein or osteopontin (OPN) in corneal inflammation and host resistance to ocular HSV-1 infection. C57BL/6 wild type (WT) and osteopontin deficient (OPN KO) mice infected in the cornea with HSV-1 were evaluated for susceptibility to infection and cornea pathology. OPN KO mice were found to possess significantly more infectious virus in the cornea at day 3 and day 7 post infection compared to infected WT mice. Coupled with these findings, HSV-1-infected OPN KO mouse corneas were found to express less interferon (IFN)-α1, double-stranded RNA-dependent protein kinase, and RNase L compared to infected WT animals early post infection that likely contributed to decreased resistance. Notably, OPN KO mice displayed significantly less corneal opacity and neovascularization compared to WT mice that paralleled a decrease in expression of vascular endothelial growth factor (VEGF) A within 12 hr post infection. The change in corneal pathology of the OPN KO mice aligned with a decrease in total leukocyte infiltration into the cornea and specifically, in neutrophils at day 3 post infection and in macrophage subpopulations including CCR2+CD115+CD206+ and CD115+CD183+CD206+ -expressing cells. The infiltration of CD4+ and CD8+ T cells into the cornea was unaltered comparing infected WT to OPN KO mice. Likewise, there was no difference in the total number of HSV-1-specific CD4+ or CD8+ T cells found in the draining lymph node with both sets functionally competent in response to virus antigen comparing WT to OPN KO mice. Collectively, these results demonstrate OPN deficiency directly influences the host innate immune response to ocular HSV-1 infection reducing some aspects of inflammation but at a cost with an increase in local HSV-1 replication.
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Affiliation(s)
- Adrian Filiberti
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Grzegorz B. Gmyrek
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Amanda N. Berube
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Daniel J. J. Carr
- Department of Ophthalmology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
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MCPIP1 alleviates inflammatory response through inducing autophagy in Aspergillus fumigatus keratitis. Int Immunopharmacol 2022; 113:109279. [DOI: 10.1016/j.intimp.2022.109279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/21/2022] [Accepted: 09/21/2022] [Indexed: 11/05/2022]
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Wang LM, Yang H, Yan HJ, Ge RF, Wang YX, Xue SS, Li L, Lyu LY, Che CY. Thymol Protects against Aspergillus Fumigatus Keratitis by Inhibiting the LOX-1/IL-1β Signaling Pathway. Curr Med Sci 2022; 42:620-628. [PMID: 35292873 DOI: 10.1007/s11596-022-2512-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 12/03/2021] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To explore the anti-inflammatory effects and mechanisms of action of thymol in Aspergillus fumigatus (A. fumigatus) keratitis. METHODS The minimum inhibitory concentration of thymol against A. fumigatus was detected. To characterize the anti-inflammatory effects of thymol, mouse corneas and human corneal epithelial cells were pretreated with thymol or dimethyl sulfoxide (DMSO) before infection with A. fumigatus spores. Slit-lamp microscopy, immunohistochemistry, myeloperoxidase detection, quantitative real-time polymerase chain reaction, and Western blotting were used to assess infection. Neutrophil and macrophage recruitment, in addition to the secretion of LOX-1 and IL-1β, were quantified to evaluate the relative contribution of thymol to the inflammatory response. RESULTS We confirmed that the growth of A. fumigatus was directly inhibited by thymol. In contrast with the DMSO group, there was a lower degree of inflammation in the mouse corneas of the thymol-pretreated group. This was characterized by significantly lower clinical scores, less inflammatory cell infiltration, and lower expression of LOX-1 and IL-1β. Similarly, in vitro experiments indicated that the production of LOX-1 and IL-1β was significantly inhibited after thymol treatment, in contrast with the DMSO-pretreated group. CONCLUSION Our findings demonstrate that thymol exerted a direct fungistatic activity on A. fumigatus. Furthermore, thymol played a protective role in fungal keratitis by inhibiting LOX-1/IL-1β signaling pathway and reducing the recruitment of neutrophils and macrophages.
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Affiliation(s)
- Li-Mei Wang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Hua Yang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Hai-Jing Yan
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Rui-Feng Ge
- Department of Otorhinolaryngology-Head and Neck Surgery, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Yun-Xiao Wang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Sha-Sha Xue
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Lin Li
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Le-Yu Lyu
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Cheng-Ye Che
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
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Osteopontin as Candidate Biomarker of Coronary Disease despite Low Cardiovascular Risk: Insights from CAPIRE Study. Cells 2022; 11:cells11040669. [PMID: 35203321 PMCID: PMC8870389 DOI: 10.3390/cells11040669] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/02/2022] [Accepted: 02/11/2022] [Indexed: 11/16/2022] Open
Abstract
Stratification according high cardiovascular (CV) risk categories, still represents a clinical challenge. In this analysis of the CAPIRE study (NCT02157662), we investigate whether inflammation could fit between CV risk factors (RFs) and the presence of coronary artery disease (CAD). In total, 544 patients were included and categorized according with the presence of CAD and CV risk factor burden (low/multiple). The primary endpoint was to verify any independent association of neutrophil-related biomarkers with CAD across CV risk categories. The highest values of osteopontin (OPN) were detected in the low RF group and associated with CAD (23.2 vs. 19.4 ng/mL; p = 0.001), although no correlation with plaque extent and/or composition were observed. Conversely, myeloperoxidase (MPO) and resistin did not differ by CAD presence. Again, OPN was identified as independent variable associated with CAD but only in the low RF group (adjOR 8.42 [95% CI 8.42–46.83]; p-value = 0.015). As an ancillary finding, a correlation linked OPN with the neutrophil degranulation biomarker MPO (r = 0.085; p = 0.048) and resistin (r = 0.177; p = 3.4 × 10−5). In the present study, OPN further strengthens its role as biomarker of CAD, potentially bridging subclinical CV risk with development of atherosclerosis.
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Zhang Q, Xu T, Bai N, Tan F, Zhao H, Liu J. Lectin‑type oxidized LDL receptor 1 modulates matrix metalloproteinase 2 production in peri‑implantitis. Exp Ther Med 2021; 23:171. [PMID: 35069852 DOI: 10.3892/etm.2021.11094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/27/2021] [Indexed: 11/06/2022] Open
Affiliation(s)
- Qian Zhang
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Tao Xu
- School of Stomatology of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Na Bai
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Fei Tan
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Hongmei Zhao
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Jie Liu
- Department of Prosthodontics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
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Li C, Wu M, Gu L, Yin M, Li H, Yuan W, Lin J, Wang Q, Xu Q, Jiang N, Zhao G. α- MSH plays anti-inflammatory and anti-fungal role in Aspergillus Fumigatus keratitis. Curr Eye Res 2021; 47:343-351. [PMID: 34766863 DOI: 10.1080/02713683.2021.2006235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE To investigate the anti-inflammatory and anti-fungal role of α-melanocyte stimulating hormone (α-MSH) in Aspergillus Fumigatus (A. fumigatus) keratitis. METHOD Corneas of C57BL/6 mice were infected with A. Fumigatus. α-MSH (5 ul, 1x10-4mmol/ml) was given by subconjunctival injection from day 1 to day 3 post infection (p.i.). After 3 days p.i., clinical score was recored and HE staining was tested. Fungal load in mice corneas was observed by plate counting. Pro-inflammatory mediators and pattern recognition receptors (PRRs) were detected. The numbers of neutrophils and macrophages were tested by immunofluorescence staining. The role of α-MSH in RAW264.7 cells after A. fumigatus stimulation were evaluated by PCR and Western blot, and MPKA protein levels including total-JNK (T-JNK), phosphorylated-JNK (P-JNK), total-ERK (T-ERK) and phosphorylated-ERK (P-ERK) were tested via Western blot with or without α-MSH treatment. RESULTS Compared with PBS control group, α-MSH treatment alleviated disease response and decreased clinical score at 3 days p.i. HE staining showed less infiltration in corneal tissue after α-MSH treatment. Plate counting experiment showed that number of viable fungus in corneas of α-MSH treated group was less than control group. mRNA levels of IL-1β, TNF-α, IL-6, MIP-2, LOX-1, Dectin-1 and iNOS were decreased. Protein levels of IL-1β, TNF-α, IL-6 and Dectin-1 were decreased. α-MSH treatment also decreased the infiltrating neutrophils and macrophages. The levels of pro-inflammatory cytokines, Dectin-1 and LOX-1 stimulated by A. fumigatus, were also suppressed by pretreatment of α-MSH in RAW264.7 cells. The ratio of P-JNK/T-JNK and P-ERK/T-ERK were down regulated in α-MSH group compared with PBS control group. CONCLUSION α-MSH alleviates the severity and decreases fungal load of A. fumigatus keratitis in mice. Migration of neutrophils and macrophages are restrained. α-MSH downregulates the expression of dectin-1 and the ratio of P-JNK/T-JNK and P-ERK/T-ERK in A. fumigatus infection.
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Affiliation(s)
- Cui Li
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Mengqi Wu
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Lingwen Gu
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Min Yin
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Hui Li
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Wu Yuan
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Jing Lin
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Qian Wang
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Qiang Xu
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Nan Jiang
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
| | - Guiqiu Zhao
- Department of Ophthalmology The Affiliated Hospital of Qingdao University Qingdao, China, 266003
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Li C, He K, Yin M, Zhang Q, Lin J, Niu Y, Wang Q, Xu Q, Jiang N, Zhao G. LOX-1 Regulates Neutrophil Apoptosis and Fungal Load in A. Fumigatus Keratitis. Curr Eye Res 2021; 46:1800-1811. [PMID: 34264144 DOI: 10.1080/02713683.2021.1948063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
PURPOSE To determine whether LOX-1 regulates neutrophil apoptosis and fungal load in A. fumigatus keratitis. METHODS Fas, FasL, CASP3, CASP8, CASP9 and BCL2 were tested in normal and infected corneas of C57BL/6 mice. Mice corneas were infected with A. fumigatus with or without pretreatment of LOX-1 neutralizing antibody or inhibitor (Poly I). Clinical score was recored and HE staining was tested. Fungal load in mice corneas was observed by plate counting. Poly morphonuclear neutrophilic leukocytes (PMNs) were stimulated with 75% ethanol-killed A. fumigatus with or without pretreatment of LOX-1 neutralizing antibody or Poly I. PCR, western blot and immunostaining tested expression of Fas, FasL, CASP3, CASP8, CASP9, BCL2 and cleaved caspase-3. PMNs infiltration and TUNEL-positive cells were assessed by immunofluorescent staining. Flow cytometry assay tested the percentage of apoptosis neutrophils. RESULTS Fas, Fas ligand, caspase-8, caspase-9 and caspase-3 mRNA levels were significantly higher in C57BL/6 mice corneas infected with A. fumigatus than normal corneas. Poly I treatment alleviated the severity and decreased clinical score at 3, 5 and 7 days post infecrion (p.i.). HE staining showed less infiltration in corneal tissue after LOX-1 inhibition. Plate counting experiment showed that number of viable fungus in corneas of Poly I treated group was significantly less than control group. LOX-1 neutralizing antibody or Poly I treatment significantly decreased neutrophil infiltration, the quantity of TUNEL-positive cells, the expression of Fas, Fas ligand, caspase-8, caspase-9, caspase-3, cleaved caspase-3 and the percentage of apoptosis neutrophils compared with control corneas. LOX-1 neutralizing antibody treatment significantly decreased Fas, FasL, CASP3, CASP8, CASP9 and cleaved caspase-3 expression in neutrophils. CONCLUSION LOX-1 inhibition decrease neutrophil apoptosis and fungal load in A. fumigatus keratitis.
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Affiliation(s)
- Cui Li
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Kun He
- Department of Ophthalmology, Zhejiang Quhua Hospital Quzhou, Zhejiang, China
| | - Min Yin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Qiuqiu Zhang
- Department of Ophthalmology, Zaozhuang Municipal Hospital, Zaozhuang, Shandong, China
| | - Jing Lin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yawen Niu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Qian Wang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Qiang Xu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Nan Jiang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Guiqiu Zhao
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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Zhang R, Peng X, Lin J, Zhang Y, Zhan L, Tian X, Yin J, Zhao G. The Role of SREC-Ⅰ in Innate Immunity to Aspergillus fumigatus Keratitis. Invest Ophthalmol Vis Sci 2021; 62:12. [PMID: 34236384 PMCID: PMC8267217 DOI: 10.1167/iovs.62.9.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose To determine the role of scavenger receptor expressed by endothelial cell-1 (SREC-Ⅰ) in vitro and in a mouse model of Aspergillus fumigatus keratitis. Methods SREC-Ⅰ mRNA and protein expression were tested in both normal and A fumigatus stimulated human corneal epithelial cells (HCECs). Immunofluorescence was used to detect SREC-Ⅰ expression in human corneas with or without A fumigatus infection. HCECs were incubated with SREC-Ⅰ small interfering RNA, then the mRNA levels of LOX-1, IL-1β, and TNF-α were detected after A fumigatus stimulation. A mouse fungal keratitis (FK) model was established and SREC-Ⅰ mRNA and protein expression were detected by RT-PCR, Western blot and immunofluorescence. The severity of FK was evaluated by clinical score. CLCX1, LOX-1, IL-1β, and TNF-α mRNA expression levels were tested before and after anti-SREC-Ⅰ treatment. Results SREC-Ⅰ expressed in normal and A fumigatus treated HCECs and human corneal epithelium. In vitro experiment showed that SREC-Ⅰ mRNA and protein levels were significantly increased after A fumigatus stimulation. SREC-Ⅰ small interfering RNA treatment inhibited the expressions of LOX-1, IL-1β, and TNF-α in HCECs. The expressions of CLCX1, LOX-1, IL-1β, and TNF-α were elevated in mice with A fumigatus keratitis, which could be decreased by SREC-Ⅰ-neutralizing antibody treatment. Conclusions SREC-Ⅰ is a key mediator in inflammatory response induced by A fumigatus keratitis. SREC-Ⅰ blockade could be a potential therapeutic approach for FK.
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Affiliation(s)
- Ranran Zhang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Xudong Peng
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Jing Lin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Yingxue Zhang
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School of Medicine, Detroit, Michigan, United States
| | - Lu Zhan
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Xue Tian
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Jiao Yin
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Guiqiu Zhao
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
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Zhu G, Lyu L, Yang H, Liu G, Yang S, Gu C, Wang L, Yan H, Hu M, Che C. SARS‑CoV‑2 spike protein‑induced host inflammatory response signature in human corneal epithelial cells. Mol Med Rep 2021; 24:584. [PMID: 34132373 DOI: 10.3892/mmr.2021.12223] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 04/20/2021] [Indexed: 11/06/2022] Open
Abstract
Coronavirus disease 2019 (COVID‑19), caused by the severe acute respiratory syndrome coronavirus‑2 (SARS‑CoV‑2), led to an outbreak of viral pneumonia in December 2019. The present study aimed to investigate the host inflammatory response signature‑caused by SARS‑CoV‑2 in human corneal epithelial cells (HCECs). The expression level of angiotensin‑converting enzyme 2 (ACE2) in the human cornea was determined via immunofluorescence. In vitro experiments were performed in HCECs stimulated with the SARS‑CoV‑2 spike protein. Moreover, the expression levels of ACE2, IL‑8, TNF‑α, IL‑6, gasdermin D (GSDMD) and IL‑1β in HCECs were detected using reverse transcription‑quantitative PCR and/or western blotting. It was identified that ACE2 was expressed in normal human corneal epithelium and HCECs cultured in vitro. Furthermore, the expression levels of IL‑8, TNF‑α and IL‑6 in HCECs were decreased following SARS‑CoV‑2 spike protein stimulation, while the expression levels of GSDMD and IL‑1β were increased. In conclusion, the present results demonstrated that the SARS‑CoV‑2 spike protein suppressed the host inflammatory response and induced pyroptosis in HCECs. Therefore, blocking the ACE2 receptor in HCECs may reduce the infection rate of COVID‑19.
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Affiliation(s)
- Guoqiang Zhu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Leyu Lyu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Hua Yang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Guibo Liu
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Shuo Yang
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Chuankai Gu
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Limei Wang
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Haijing Yan
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
| | - Ming Hu
- Department of Special Medicine, School of Basic Medical Sciences, Qingdao University, Qingdao, Shandong 266021, P.R. China
| | - Chengye Che
- Department of Ophthalmology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong 266003, P.R. China
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Zhu G, Lyu L, Yang H, Lee J, Sun J, Zhang J, Xue S, Yan H, Wang L, Chen X, Che C. CLEC-1 Acts as a Negative Regulator of Dectin-1 Induced Host Inflammatory Response Signature in Aspergillus fumigatus Keratitis. Invest Ophthalmol Vis Sci 2021; 62:28. [PMID: 34043748 PMCID: PMC8164365 DOI: 10.1167/iovs.62.6.28] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose C-type lectin-like receptor-1 (CLEC-1) is a member of the Dectin-1 cluster of pattern recognition receptors (PRRs). It is involved in host immunity, has immunoregulatory function, and supports allograft tolerance. Our study aimed to describe the role of CLEC-1 in response to fungal keratitis, in situ, in vivo, and in vitro. Methods Quantitative polymerase chain reaction (qRT-PCR) and immunofluorescence were used to detect the expression of CLEC-1 in corneas of patients with Aspergillus fumigatus (A. fumigatus) keratitis. In vitro and in vivo experiments were designed in THP-1 macrophages and C57BL/6 mouse models, respectively. The expression of CLEC-1 in corneas of mice model was determined by qRT-PCR, Western blot, and immunofluorescence. CLEC-1 overexpression in mouse corneas was achieved by intrastromal injection of adeno-associated virus (AAV) vectors. Disease response was evaluated by slit-lamp photography, clinical score, and colony forming unit (CFU). Bioluminescence imaging system image acquisition, myeloperoxidase (MPO) assays, immunofluorescence staining, qRT-PCR, and Western blot were used to investigate the role of CLEC-1. To further define the role of CLEC-1, we used lentivirus vectors to overexpress CLEC-1 or/and Dectin-1 in THP-1 macrophages. Results The expression of CLEC-1 was increased in corneas of patients with A. fumigatus keratitis. In corneas of mice from the A. fumigatus keratitis model, the expression of CLEC-1 was decreased in the acute inflammatory stage and increased during convalescence. Following Natamycin treatment, CLEC-1 was upregulated in A. fumigatus keratitis mice. Compared with normal C57BL/6 mice, overexpression of CLEC-1 converted the characteristic susceptible response to resistance, as demonstrated by slit-lamp photography and clinical score. In vivo studies revealed decreased MPO levels and neutrophils recruitment and higher fungal load after the upregulation of CLEC-1. Compared with control corneas, CLEC-1 overexpression impaired corneal pro-inflammatory cytokine IL-1β production. Conclusions These findings demonstrate that CLEC-1 may act as a negative regulator of Dectin-1 induced host inflammatory response via suppressing neutrophils recruitment and production of pro-inflammatory cytokine IL-1β production in response to A. fumigatus keratitis.
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Affiliation(s)
- Guoqiang Zhu
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China.,Department of Ophthalmology, the Affiliated Hospital of Jining Medical University, Jining, China
| | - Leyu Lyu
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Hua Yang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jieun Lee
- Department of Ophthalmology, School of Medicine, Pusan National University, Yangsan, Korea
| | - Jintao Sun
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jie Zhang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shasha Xue
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Haijing Yan
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Limei Wang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaomeng Chen
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
| | - Chengye Che
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, China
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In Silico Drug Repurposing by Structural Alteration after Induced Fit: Discovery of a Candidate Agent for Recovery of Nucleotide Excision Repair in Xeroderma Pigmentosum Group D Mutant (R683W). Biomedicines 2021; 9:biomedicines9030249. [PMID: 33802476 PMCID: PMC7999925 DOI: 10.3390/biomedicines9030249] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/25/2021] [Accepted: 02/25/2021] [Indexed: 11/16/2022] Open
Abstract
Xeroderma pigmentosum complementation group D (XPD) is a UV-sensitive syndrome and a rare incurable genetic disease which is caused by the genetic mutation of the excision repair cross-complementation group 2 gene (ERCC2). Patients who harbor only XPD R683W mutant protein develop severe photosensitivity and progressive neurological symptoms. Cultured cells derived from patients with XPD (XPD R683W cells) demonstrate a reduced nucleotide excision repair (NER) ability. We hope to ameliorate clinical symptoms if we can identify candidate agents that would aid recovery of the cells' NER ability. To investigate such candidates, we created in silico methods of drug repurposing (in silico DR), a strategy that utilizes the recovery of ATP-binding in the XPD R683W protein after the induced fit. We chose 4E1RCat and aprepitant as the candidates for our in silico DR, and evaluated them by using the UV-induced unscheduled DNA synthesis (UDS) assay to verify the recovery of NER in XPD R683W cells. UDS values of the cells improved about 1.4-1.7 times after 4E1RCat treatment compared with solvent-only controls; aprepitant showed no positive effect. In this study, therefore, we succeeded in finding the candidate agent 4E1RCat for XPD R683W. We also demonstrated that our in silico DR method is a cost-effective approach for drug candidate discovery.
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Han F, Guo H, Wang L, Zhang Y, Sun L, Dai C, Wu X. The cGAS-STING signaling pathway contributes to the inflammatory response and autophagy in Aspergillus fumigatus keratitis. Exp Eye Res 2020; 202:108366. [PMID: 33227296 DOI: 10.1016/j.exer.2020.108366] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/26/2020] [Accepted: 11/16/2020] [Indexed: 12/20/2022]
Abstract
Fungal keratitis is a serious corneal infection, which can lead to significant visual impairment and blindness. The cGAS-STING signaling pathway has emerged as a key player in innate immunity by sensing of invading pathogens. However, the role of the cGAS-STING pathway in Aspergillus fumigatus (A. fumigatus) keratitis is still unknown. In this study, we showed that the cGAS-STING signaling pathway was activated in human corneal epithelial cells (HCECs) and in mouse corneas infected with A. fumigatus. Knockdown of cGAS reduced A. fumigatus-induced production of pro-inflammatory cytokines, including TNF-α, IL-1β, IL-6, and IFN-β. However, reconstruction of cGAS activity restored the inflammatory response in HCECs infected with A. fumigatus. A specific cGAS inhibitor, RU.521, could also significantly inhibit A. fumigatus-induced inflammatory cytokine expression. In addition, we found that cGAS was indispensable for the autophagy flux evoked by A. fumigatus infection. Moreover, inhibition of cGAS using siRNA or RU.521 alleviated the severity of A. fumigatus keratitis in the mouse cornea. Therefore, the cGAS-STING signaling pathway contributes to the progression of A. fumigatus keratitis and targeting this pathway may provide therapeutic potential.
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Affiliation(s)
- Fang Han
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, 250012, China; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Hui Guo
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Leyi Wang
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Yuting Zhang
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Lin Sun
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, 250012, China; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Chenyang Dai
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, 250012, China; The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Xinyi Wu
- Department of Ophthalmology, Qilu Hospital of Shandong University, Jinan, 250012, China.
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15
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Cen Y, Li Y, Huang C, Wang W. Bibliometric and visualized analysis of global research on fungal keratitis from 1959 to 2019. Medicine (Baltimore) 2020; 99:e20420. [PMID: 32481438 DOI: 10.1097/md.0000000000020420] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Fungal keratitis is one of the leading causes of ocular morbidity. The prognosis of fungal keratitis is poorer than many other forms of keratitis but the research of which relatively lags behind. We conducted a bibliometric and visualized analysis in order to characterize the overall status, general trends and current foci of keratomycosis research field. METHODS Literature database ranged from 1959 to 2019 was obtained from web of science core collection and analyzed by Citespace and VOSviewer software. RESULTS A total of 1906 papers of fungal keratitis were retrieved and derived a 27,917 references document set. The number of publications increased rapidly in past 30 years. Cornea was the journal published most papers of keratomycosis. The leading countries were United States of America (USA), India and Peoples Republic of China (PRC), from where came the most productive and most cited institutions and authors. Co-cited reference analysis revealed the most cited manuscripts were concerned about epidemiology or spectrum. Lens-associated Fusarium, amphotericin B, voriconazole, corneal cross-linking, predisposing factor are some of the high frequency topics in clustered co-cited reference analysis and co-occurrence keywords analysis. Burst detection analysis of keywords showed ocular drug delivery was the new research foci. CONCLUSION From this study, we received an overall view to the current status, trends and hot spots of fungal keratitis research field. Visualized bibliometric analysis is an efficient way for literature learning and useful for future researchers.
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Affiliation(s)
- Yujie Cen
- Department of Ophthalmology
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve
| | - Yingyu Li
- Department of Ophthalmology
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve
| | - Chen Huang
- Department of Ophthalmology
- Medical Research Center, Peking University Third Hospital, Beijing, China
| | - Wei Wang
- Department of Ophthalmology
- Beijing Key Laboratory of Restoration of Damaged Ocular Nerve
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Yang H, Wang Q, Han L, Yang X, Zhao W, Lyu L, Wang L, Yan H, Che C. Nerolidol inhibits the LOX-1 / IL-1β signaling to protect against the Aspergillus fumigatus keratitis inflammation damage to the cornea. Int Immunopharmacol 2020; 80:106118. [PMID: 31926445 DOI: 10.1016/j.intimp.2019.106118] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 12/01/2019] [Accepted: 12/07/2019] [Indexed: 12/30/2022]
Abstract
PURPOSE Nerolidol, a naturally occurring sesquiterpene has both anti-microbial and anti-inflammatory properties. The current study aims to investigate the antifungal and the anti-inflammatory effects of nerolidol against mouse Aspergillus fumigatus (A. fumigatus) keratitis. METHODS The minimum inhibitory concentration (MIC) and cytotoxicity tests were used to study the antifungal ability. For in vivo and in vitro studies, the mouse corneas and the human corneal epithelial cells (HCECs) infected with A. fumigatus spores were intervented with nerolidol or phosphate buffer saline (PBS). Thereafter, the effect of the nerolidol on the response against inflammation was analyzed using the following parameters: recruitment of the neutrophils or macrophages and the expression of the lectin-type oxidized low density lipoprotein receptor-1 (LOX-1) and interleukin 1β (IL-1β). Techniques used were the slit lamp, immunofluorescence, myeloperoxidase (MPO) detection, quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot. RESULTS Nerolidol directly inhibits the growth of A. fumigatus. The administration of nerolidol reduced the severity of fungal keratitis with infiltration of fewer inflammatory cells and reduced levels of the LOX-1, as well the anti-inflammatory cytokines such as IL-1β were reduced compared with the PBS group. Additionally, in vitro studies showed that treatment with nerolidol inhibited the production of the LOX-1 / IL-1β levels in A. fumigatus stimulated HCECs. CONCLUSION Nerolidol attenuated the A. fumigatus keratitis inflammatory response by inhibiting the growth of A. fumigatus, reducing the recruitment of the neutrophils and the macrophages, and inhibiting the LOX-1/ IL-1β signaling.
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Affiliation(s)
- Hua Yang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Qian Wang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Lin Han
- Gout Laboratory, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Xuejiao Yang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Wenyi Zhao
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Leyu Lyu
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Limei Wang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Haijing Yan
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Chengye Che
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
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Cheng M, Lin J, Li C, Zhao W, Yang H, Lv L, Che C. Wedelolactone suppresses IL-1β maturation and neutrophil infiltration in Aspergillus fumigatus keratitis. Int Immunopharmacol 2019; 73:17-22. [PMID: 31078922 DOI: 10.1016/j.intimp.2019.04.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE Wedelolactone, a chemical compound extracted from Wedelia calendulacea or Eclipta alba, has been reported to regulate key steps in inflammation. However, the effects of wedelolactone on fungal keratitis are not known. Hence, we aimed to characterize the impact of wedelolactone in Aspergillus fumigatus keratitis. METHODS Aspergillus fumigatus was used to establish an in vivo mouse model of fungal keratitis and an in vitro model of THP-1 macrophages. Mice and THP-1 macrophages were pre-treated with wedelolactone. Clinical evaluation, myeloperoxidase (MPO) assay, neutrophil staining, western blot and quantitative polymerase chain reaction (qRT-PCR) were used to assess the effect of wedelolactone on A. fumigatus infection. Therapeutic effect of natamycin treatment with or without wedelolactone was measured via slit lamp microscopy. RESULTS We confirmed that wedelolactone attenuated the infiltration of neutrophils and decreased MPO level at earlier time points in mice with A. fumigatus keratitis. Pre-treatment with wedelolactone decreased pro-inflammatory cytokine interleukin 1 beta (IL-1β) maturation by inhibiting caspase-1 activity. Combined with natamycin, wedelolactone protected corneal transparency in mouse with fungal keratitis. CONCLUSION Present findings indicated that wedelolactone reduced host immune responses by attenuating neutrophil recruitment and IL-1β maturation in Aspergillus fumigatus keratitis. Wedelolactone combined with an antifungal medicine could be a potential therapy for reducing lesion severity in fungal keratitis.
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Affiliation(s)
- Min Cheng
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China; Department of Ophthalmology, Laixi Municipal Hospital, Qingdao, Shandong Province, China
| | - Jing Lin
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Cui Li
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Wenyi Zhao
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Hua Yang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Leyu Lv
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Chengye Che
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
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Maresin1 regulates neutrophil recruitment and IL-10 expression in Aspergillus fumigatus keratitis. Int Immunopharmacol 2019; 69:103-108. [DOI: 10.1016/j.intimp.2019.01.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 12/19/2018] [Accepted: 01/22/2019] [Indexed: 12/31/2022]
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Bonaventura A, Montecucco F. Inflammation and pericarditis: Are neutrophils actors behind the scenes? J Cell Physiol 2018; 234:5390-5398. [PMID: 30417336 DOI: 10.1002/jcp.27436] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 08/28/2018] [Indexed: 12/11/2022]
Abstract
The morbidity of acute pericarditis is increasing over time impacting on patient quality of life. Recent clinical trials focused especially on clinical aspects, with a modest interest in pathophysiological mechanisms. This narrative review, based on papers in English language obtained via PubMed up to April 2018, aims at focusing on the role of the innate immunity in pericarditis and discussing future potential therapeutic strategies impacting on disease pathophysiology. In developed countries, most cases of pericarditis are referred to as idiopathic, although etiological causes have been described, with autoreactive/lymphocytic, malignant, and infectious ones as the most frequent causes. Apart the known impairment of the adaptive immunity, recently a large body evidence indicated the central role of the innate immune system in the pathogenesis of recurrent pericarditis, starting from similarities with autoinflammatory diseases. Accordingly, the "inflammasome" has been shown to behave as an important player in pericarditis development. Similarly, the beneficial effect of colchicine in recurrent pericarditis confirms that neutrophils are important effectors as colchicine, which can block neutrophil chemotaxis, interferes with neutrophil adhesion and recruitment to injured tissues and abrogate superoxide production. Anyway, the role of the adaptive immune system in pericarditis cannot be reduced to a black or white issue as mechanisms often overlap. Therefore, we believe that more efficient therapeutic strategies have to be investigated by targeting neutrophil-derived mediators (such as metalloproteinases) and disentangling the strict interplay between neutrophils and platelets. In this view, some progress has been done by using the recombinant human interleukin-1 receptor antagonist anakinra.
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Affiliation(s)
- Aldo Bonaventura
- Department of Internal Medicine, First Clinic of Internal Medicine, University of Genoa, Genoa, Italy
| | - Fabrizio Montecucco
- Department of Internal Medicine, First Clinic of Internal Medicine, University of Genoa, Genoa, Italy
- Ospedale Policlinico San Martino, Genoa, Italy
- Centre of Excellence for Biomedical Research (CEBR), University of Genoa, Genoa, Italy
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Carbone F, Montecucco F. Novel cardiovascular risk biomarkers in carotid atherogenesis. Biomark Med 2018; 12:1065-1067. [PMID: 30227729 DOI: 10.2217/bmm-2018-0198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- Federico Carbone
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy.,IRCCS Ospedale Policlinico San Martino, Genova 10 Largo Benzi, 16132, Genoa, Italy & Center of Excellence for Biomedical Research (CEBR), University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy
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Wnt5a contributes to dectin-1 and LOX-1 induced host inflammatory response signature in Aspergillus fumigatus keratitis. Cell Signal 2018; 52:103-111. [PMID: 30172652 DOI: 10.1016/j.cellsig.2018.08.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/24/2018] [Accepted: 08/30/2018] [Indexed: 01/18/2023]
Abstract
Fungal keratitis causes devastating corneal ulcers which can result in significant visual impairment and even blindness. As a ligand that activates the non-canonical Wnt signaling pathways, Wnt5a triggers the production of important inflammatory chemokines and the chemotactic migration of neutrophils. In this study we aimed to characterize the role of Wnt5a production, in situ, in vivo and in vitro in response to fungal keratitis. Wnt5a expression in corneas of Aspergillus fumigatus (A. fumigatus) keratitis patients was determined by quantitative polymerase chain reaction (qRT-PCR) and immunofluorescence. In vivo and in vitro experiments were then performed in mouse models and THP-1 macrophages cell cultures infected with A. fumigatus, respectively. C57BL/6 mice were pretreated with siRNAs or neutralizing antibodies for dectin-1, LOX-1 and Wnt5a, or inhibitors of erk1/2 and JNK. Changes in Wnt5a expression were assessed by clinical evaluation, qRT-PCR, immunofluorescence, western blot and bioluminescence imaging system image acquisition. We confirmed that corneal Wnt5a expression increased with A. fumigatus keratitis in patients and a murine model. Wnt5a production was dependent on dectin-1 and LOX-1 expression with contributions by Erk1/2 and JNK pathways. Additionally, Wnt5a knockdown revealed decreased levels of MPO, lower neutrophil recruitment, and a higher fungal load in mouse models. Compared with controls, Wnt5a knockdown impaired pro-inflammatory cytokine IL-1β production in response to A. fumigatus exposure. Wnt5a also produces dectin-1 and LOX-1 induced inflammatory signature via effective neutrophil recruitment and inflammatory cytokine production in response to A. fumigatus keratitis. These findings demonstrate that Wnt5a is a critical component of the antifungal immune response.
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