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Ding Q, Xiong B, Liu J, Rong X, Tian Z, Chen L, Tao H, Li H, Zeng P. Bioinformatics analysis of PANoptosis regulators in the diagnosis and subtyping of steroid-induced osteonecrosis of the femoral head. Medicine (Baltimore) 2024; 103:e37837. [PMID: 38701259 PMCID: PMC11062652 DOI: 10.1097/md.0000000000037837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 03/18/2024] [Indexed: 05/05/2024] Open
Abstract
In this study, we aimed to investigate the involvement of PANoptosis, a form of regulated cell death, in the development of steroid-induced osteonecrosis of the femoral head (SONFH). The underlying pathogenesis of PANoptosis in SONFH remains unclear. To address this, we employed bioinformatics approaches to analyze the key genes associated with PANoptosis. Our analysis was based on the GSE123568 dataset, allowing us to investigate both the expression profiles of PANoptosis-related genes (PRGs) and the immune profiles in SONFHallowing us to investigate the expression profiles of PRGs as well as the immune profiles in SONFH. We conducted cluster classification based on PRGs and assessed immune cell infiltration. Additionally, we used the weighted gene co-expression network analysis (WGCNA) algorithm to identify cluster-specific hub genes. Furthermore, we developed an optimal machine learning model to identify the key predictive genes responsible for SONFH progression. We also constructed a nomogram model with high predictive accuracy for assessing risk factors in SONFH patients, and validated the model using external data (area under the curve; AUC = 1.000). Furthermore, we identified potential drug targets for SONFH through the Coremine medical database. Using the optimal machine learning model, we found that 2 PRGs, CASP1 and MLKL, were significantly correlated with the key predictive genes and exhibited higher expression levels in SONFH. Our analysis revealed the existence of 2 distinct PANoptosis molecular subtypes (C1 and C2) within SONFH. Importantly, we observed significant variations in the distribution of immune cells across these subtypes, with C2 displaying higher levels of immune cell infiltration. Gene set variation analysis indicated that C2 was closely associated with multiple immune responses. In conclusion, our study sheds light on the intricate relationship between PANoptosis and SONFH. We successfully developed a risk predictive model for SONFH patients and different SONFH subtypes. These findings enhance our understanding of the pathogenesis of SONFH and offer potential insights into therapeutic strategies.
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Affiliation(s)
- Qiang Ding
- The First Clinical Medical College, Guangxi University of Chinese Medicine, Nanning, China
| | - Bo Xiong
- Yulin Orthopedic Hospital of Integrated Traditional Chinese and Western Medicine, Yulin, China
| | - Jinfu Liu
- The First Clinical Medical College, Guangxi University of Chinese Medicine, Nanning, China
| | - Xiangbin Rong
- Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine, Nanning, China
| | - Zhao Tian
- The First Clinical Medical College, Guangxi University of Chinese Medicine, Nanning, China
| | - Limin Chen
- The First Clinical Medical College, Guangxi University of Chinese Medicine, Nanning, China
| | - Hongcheng Tao
- The First Clinical Medical College, Guangxi University of Chinese Medicine, Nanning, China
| | - Hao Li
- The First Clinical Medical College, Guangxi University of Chinese Medicine, Nanning, China
| | - Ping Zeng
- Guangxi Traditional Chinese Medical University Affiliated First Hospital, Nanning, China
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Miyake Y, Ameis D, Tse WH, Patel D, Ozturk Aptekmann A, Yamataka A, Keijzer R. The RNA-binding protein quaking is upregulated in nitrofen-induced congenital diaphragmatic hernia lungs at the end of gestation. Pediatr Surg Int 2024; 40:78. [PMID: 38472353 DOI: 10.1007/s00383-023-05608-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/22/2023] [Indexed: 03/14/2024]
Abstract
BACKGROUND The RNA-binding protein Quaking (QKI) increases during epithelial-to-mesenchymal transition and its expression is controlled by microRNA-200 family members. Here, we aimed to describe the expression of QKI in the developing lungs of control and nitrofen-induced congenital diaphragmatic hernia lungs (CDH). METHODS To investigate the expression of QKI, we dissected lungs from control and nitrofen-induced CDH rats on embryonic day 15, 18, 21 (E15, E18, E21). We performed immunofluorescence (IF) and quantitative reverse transcription PCR (RT-qPCR) for QKI expression. Additionally, we assessed Interleukin-6 (IL-6) abundance using IF. RESULTS On E21, IF showed that the abundance of all three QKI isoforms and IL-6 protein was higher in CDH lungs compared to control lungs (QKI5: p = 0.023, QKI6: p = 0.006, QKI7: p = 0.014, IL-6: p = 0.045, respectively). Furthermore, RT-qPCR data showed increased expression of QKI5, QKI6, and QKI7 mRNA in E21 nitrofen lungs by 1.63 fold (p = 0.001), 1.63 fold (p = 0.010), and 1.48 fold (p = 0.018), respectively. CONCLUSIONS Our data show an increase in the abundance and expression of QKI at the end of gestation in nitrofen-induced CDH lungs. Therefore, a disruption in the regulation of QKI during the late stage of pregnancy could be associated with the pathogenesis of abnormal lung development in CDH.
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Affiliation(s)
- Yuichiro Miyake
- Department of Surgery, Division of Pediatric Surgery, University of Manitoba, Children's Hospital Research Institute of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
- Department of Pediatric General and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Dustin Ameis
- Department of Surgery, Division of Pediatric Surgery, University of Manitoba, Children's Hospital Research Institute of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Wai Hei Tse
- Department of Surgery, Division of Pediatric Surgery, University of Manitoba, Children's Hospital Research Institute of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Daywin Patel
- Department of Surgery, Division of Pediatric Surgery, University of Manitoba, Children's Hospital Research Institute of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Arzu Ozturk Aptekmann
- Department of Surgery, Division of Pediatric Surgery, University of Manitoba, Children's Hospital Research Institute of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada
| | - Atsuyuki Yamataka
- Department of Pediatric General and Urogenital Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Richard Keijzer
- Department of Surgery, Division of Pediatric Surgery, University of Manitoba, Children's Hospital Research Institute of Manitoba, AE402-820 Sherbrook Street, Winnipeg, MB, R3A 1S1, Canada.
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Zhang Y, Li G. Predicting feature genes correlated with immune infiltration in patients with abdominal aortic aneurysm based on machine learning algorithms. Sci Rep 2024; 14:5157. [PMID: 38431726 PMCID: PMC10908806 DOI: 10.1038/s41598-024-55941-6] [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: 06/21/2023] [Accepted: 02/29/2024] [Indexed: 03/05/2024] Open
Abstract
Abdominal aortic aneurysm (AAA) is a condition characterized by a pathological and progressive dilatation of the infrarenal abdominal aorta. The exploration of AAA feature genes is crucial for enhancing the prognosis of AAA patients. Microarray datasets of AAA were downloaded from the Gene Expression Omnibus database. A total of 43 upregulated differentially expressed genes (DEGs) and 32 downregulated DEGs were obtained. Function, pathway, disease, and gene set enrichment analyses were performed, in which enrichments were related to inflammation and immune response. AHR, APLNR, ITGA10 and NR2F6 were defined as feature genes via machine learning algorithms and a validation cohort, which indicated high diagnostic abilities by the receiver operating characteristic curves. The cell-type identification by estimating relative subsets of RNA transcripts (CIBERSORT) method was used to quantify the proportions of immune infiltration in samples of AAA and normal tissues. We have predicted AHR, APLNR, ITGA10 and NR2F6 as feature genes of AAA. CD8 + T cells and M2 macrophages correlated with these genes may be involved in the development of AAA, which have the potential to be developed as risk predictors and immune interventions.
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Affiliation(s)
- Yufeng Zhang
- Department of Vascular Surgery, The Second Affiliated Hospital of Shandong First Medical University, Tai'an, 271000, Shandong, China
- Postdoctoral Workstation, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250021, Shandong, China
- Department of Pulmonary and Critical Care Medicine, Jiangyin Hospital of Traditional Chinese Medicine, Jiangyin Hospital Affiliated to Nanjing University of Chinese Medicine, Jiangyin, 214400, Jiangsu, China
| | - Gang Li
- Department of Vascular Surgery, The Second Affiliated Hospital of Shandong First Medical University, Tai'an, 271000, Shandong, China.
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Yang L, Yuan L. Identification of novel N7-methylguanine-related gene signatures associated with ulcerative colitis and the association with biological therapy. Inflamm Res 2023; 72:2169-2180. [PMID: 37889323 DOI: 10.1007/s00011-023-01806-z] [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: 07/23/2023] [Revised: 07/23/2023] [Accepted: 10/11/2023] [Indexed: 10/28/2023] Open
Abstract
OBJECTIVE Ulcerative colitis (UC) is an inflammatory disease characterized by recurrent episodes of chronic intestinal inflammation. It is closely associated with immune dysregulation in the intestines. However, the mechanisms underlying the role of immune-related N7-methylguanosine (m7G) internal modification in UC remain unclear. METHODS We conducted a screening of differentially expressed genes (DEGs) associated with m7G and performed immune infiltration analysis. We then investigated the correlation between m7G-related DEGs and immune cells or pathways. To further explore the functional implications, we conducted functional enrichment analysis to identify gene modules that strongly correlated with hub gene expression. In addition, we constructed a miRNA regulatory network for the hub genes in UC. Furthermore, we examined the association between hub genes and disease remission in UC patients undergoing biologic therapy. RESULTS We obtained 13 m7G-related DEGs and conducted an in-depth analysis of immune infiltration. Among them, we identified five hub genes (NUDT7, NUDT12, POLR2H, QKI, and PRKCB) that showed diagnostic potential for UC. Through WGCNA and KEGG analysis, we found that gene modules strongly correlated with m7G hub gene expression were enriched in inflammation-related pathways. Furthermore, Kaplan-Meier survival analysis revealed a significant association between changes in hub gene expression levels and disease remission in UC patients undergoing biologic therapy. CONCLUSION The findings of this study demonstrate that five m7G-related DEGs, including the m7G-modified recognition protein QKI, play a key role in the occurrence and progression of UC intestinal inflammation, which is closely related to intestinal immunity. These results provide valuable insights into the mechanisms of m7G modification in UC development and offer new perspectives for exploring novel therapeutic targets for UC.
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Affiliation(s)
- Lichao Yang
- Department of General Surgery, The Second Xiangya Hospital of Central South University, Changsha, 410011, China
| | - Lianwen Yuan
- Department of General Surgery, The Second Xiangya Hospital of Central South University, Changsha, 410011, China.
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Yan Z, Ruan B, Wang S, Du T, Shao X, Chen G, Wang L, Zhai D, Zhu S, Lu Z, Cao X. RNA-binding Protein QKI Inhibits Osteogenic Differentiation Via Suppressing Wnt Pathway. Arch Med Res 2023; 54:102853. [PMID: 37460362 DOI: 10.1016/j.arcmed.2023.102853] [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: 01/25/2023] [Revised: 05/23/2023] [Accepted: 07/03/2023] [Indexed: 07/31/2023]
Abstract
BACKGROUND Dysregulation of MSCs differentiation is associated with many pathophysiological processes. Genetically modified MSCs transplantation helps restore bone loss efficiently. METHODS BMSCs-specific QKI overexpressing and knockdown mice were built to explore QKI's role in bone formation and fat accumulation. Primary BMSCs with QKI overexpression and knockout were subjected to osteogenic and adipogenic differentiation. ALP staining and oil red O staining were performed to evaluate the differences between the groups. RNA immunoprecipitation was performed to identify the QKI-related pathway. QKI deficient BMSCs were transplanted into mice with glucocorticoid-induced osteoporosis to evaluate its therapeutic potential. RESULTS Mice harboring BMSC-specific transgenic QKI exhibited reduced bone mass, while BMSC-specific QKI-deficient mice showed an increase in bone mass. Osteogenic differentiation of QKI deficient BMSCs was promoted and adipogenic differentiation was inhibited, while QKI overexpression in BMSCs displayed the opposite effects. To define the underlying mechanisms, RIP sequencing was performed. Wnt pathway-related genes were the putative direct target mRNAs of QKI, Canonical Wnt pathway activation was involved in QKI's effects on osteogenic differentiation. RNA immunoprecipitation quantitative real-time Polymerase Chain Reaction (PCR) and RNA fluorescence in situ hybridization experiments further validated that QKI repressed the expressions of Wnt5b, Fzd7, Dvl3 and β-catenin via direct binding to their putative mRNA specific sites. Glucocorticoid-induced osteoporotic mice transplanted with QKI deficient BMSCs exhibited less bone loss compared with mice transplanted with control BMSCs. CONCLUSIONS QKI suppressed BMSCs osteogenic differentiation by downregulating the expressions of Wnt5b, Fzd7, Dvl3 and β-catenin. Loss of QKI in BMSCs transplantation may provide a new strategy for the treatment of orthopedic diseases such as osteoporosis.
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Affiliation(s)
- Zhao Yan
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China; Department of Anatomy, Histology and Embryology and K.K. Leung Brain Research Centre, Fourth Military Medical University, Xi'an, China
| | - Banjun Ruan
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shan Wang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Tianshu Du
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiaolong Shao
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Guo Chen
- State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Fourth Military Medical University, Xi'an, China
| | - Li Wang
- State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Fourth Military Medical University, Xi'an, China
| | - Dongsheng Zhai
- State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Fourth Military Medical University, Xi'an, China
| | - Shu Zhu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zifan Lu
- State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Fourth Military Medical University, Xi'an, China; Shaanxi Provincial People's Hospital, Xi'an, China
| | - Xiaorui Cao
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
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Yu H, Douglas HF, Wathieu D, Braun RA, Edomwande C, Lightell DJ, Pham T, Klingenberg NC, Bishop SP, Khismatullin DB, Woods TC. Diabetes is accompanied by secretion of pro-atherosclerotic exosomes from vascular smooth muscle cells. Cardiovasc Diabetol 2023; 22:112. [PMID: 37179303 PMCID: PMC10183121 DOI: 10.1186/s12933-023-01833-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 04/14/2023] [Indexed: 05/15/2023] Open
Abstract
BACKGROUND Atherosclerosis is a common co-morbidity of type 2 diabetes mellitus. Monocyte recruitment by an activated endothelium and the pro-inflammatory activity of the resulting macrophages are critical components of atherosclerosis. Exosomal transfer of microRNAs has emerged as a paracrine signaling mechanism regulating atherosclerotic plaque development. MicroRNAs-221 and -222 (miR-221/222) are elevated in vascular smooth muscle cells (VSMCs) of diabetic patients. We hypothesized that the transfer of miR-221/222 via VSMC-derived exosomes from diabetic sources (DVEs) promotes increased vascular inflammation and atherosclerotic plaque development. METHODS Exosomes were obtained from VSMCs, following exposure to non-targeting or miR-221/-222 siRNA (-KD), isolated from diabetic (DVEs) and non-diabetic (NVEs) sources and their miR-221/-222 content was measured using droplet digital PCR (ddPCR). Expression of adhesion molecules and the adhesion of monocytes was measured following exposure to DVEs and NVEs. Macrophage phenotype following exposure to DVEs was determined by measuring mRNA markers and secreted cytokines. Age-matched apolipoprotein-E-deficient mice null (ApoE-/-) mice were maintained on Western diet for 6 weeks and received injections of saline, NVEs, NVE-KDs, DVEs or DVE-KDs every other day. Atherosclerotic plaque formation was measured using Oil Red Oil staining. RESULTS Exposure of human umbilical vein and coronary artery endothelial cells to DVEs, but not NVEs, NVE-KDs, or DVE-KDs promoted increased intercellular adhesion molecule-1 expression and monocyte adhesion. DVEs but not NVEs, NVE-KDs, or DVE-KDs also promoted pro-inflammatory polarization of human monocytes in a miR-221/222 dependent manner. Finally, intravenous administration of DVEs, but not NVEs, resulted in a significant increase in atherosclerotic plaque development. CONCLUSION These data identify a novel paracrine signaling pathway that promotes the cardiovascular complications of diabetes mellitus.
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Affiliation(s)
- Heng Yu
- Department of Biomedical Engineering, Tulane University, New Orleans, LA, USA
| | - Hunter F Douglas
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Donald Wathieu
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Ryan A Braun
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Christine Edomwande
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Daniel J Lightell
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Thaidan Pham
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Natasha C Klingenberg
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Shelia Pugh Bishop
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | | | - T Cooper Woods
- Department of Physiology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA.
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA.
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Ma J, Chen J, Wang H, Lu D, Liang K. AhR regulates VEGF expression by promoting STAT1 transcriptional activity, thereby affecting endothelial angiogenesis in acute limb ischemia. Chem Biol Interact 2023; 369:110253. [PMID: 36347318 DOI: 10.1016/j.cbi.2022.110253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/07/2022] [Accepted: 11/02/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND Angiogenesis has great potential in the treatment of acute limb ischemia (ALI). Here, we aimed to investigate the effect and mechanism of Aryl hydrocarbon receptor (AhR) on angiogenesis in ALI. METHODS The ALI mouse model was constructed by femoral artery ligation, and the cell ischemia injury was induced by Hypoxia/serum deprivation. The laser doppler perfusion imaging was executed to detect the limb blood flow velocity. The tube formation assay was performed to evaluate angiogenesis. The cell viability was measured by 3-(45)-dimethylthiahiazo(-z-y1)-35-di-phenytetrazoliumromide. The cell migration was detected by wound healing assay. Hematoxylin-eosin, immunohistochemistry, immunofluorescence, dual-luciferase reporter gene assay, and Chromatin immunoprecipitation assay were conducted. RESULTS In ALI models, AhR expression was increased and translocated from cytoplasm to nucleus. Besides, necrosis and inflammatory infiltration were also increased in gastrocnemius tissues of model mice. In addition, AhR loss (LV-sh-AhR) promoted cell viability, angiogenesis, and migration, and also elevated the levels of vascular endothelial growth factor (VEGF), Tie2, and Ang2 in HUVEC models with Hypoxia/serum deprivation injury. Meanwhile, the interaction between AhR and signal transducer and activator of transcription 1 (STAT1), as well as STAT1 and VEGF, has also been confirmed. Co-transfection of LV-sh-AhR and LV-STAT1 suppressed cell viability, angiogenesis, and migration of injured HUVECs. Furthermore, injection of AAV2/9-shAhR in vivo also promoted angiogenesis, which was consistent with the in vitro experimental results. CONCLUSIONS In ALI models, activated AhR was translocated to the nucleus and down-regulated VEGF expression by promoting the transcriptional activity of STAT1, thereby inhibiting endothelial angiogenesis.
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Affiliation(s)
- Jinhui Ma
- Department of Vascular and Endovascular Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, China.
| | - Jiangbo Chen
- Department of Vascular and Endovascular Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, China
| | - Heng Wang
- Department of Vascular and Endovascular Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, China
| | - Danghui Lu
- Department of Vascular and Endovascular Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, China
| | - Kai Liang
- Department of Vascular and Endovascular Surgery, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, China
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Zhai D, Wang W, Ye Z, Xue K, Chen G, Hu S, Yan Z, Guo Y, Wang F, Li X, Xiang A, Li X, Lu Z, Wang L. QKI degradation in macrophage by RNF6 protects mice from MRSA infection via enhancing PI3K p110β dependent autophagy. Cell Biosci 2022; 12:154. [PMID: 36088389 PMCID: PMC9464412 DOI: 10.1186/s13578-022-00865-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 08/01/2022] [Indexed: 11/10/2022] Open
Abstract
Background Sepsis is a fatal condition commonly caused by Methicillin-resistant Staphylococcus aureus (MRSA) with a high death rate. Macrophages can protect the host from various microbial pathogens by recognizing and eliminating them. Earlier we found that Quaking (QKI), an RNA binding protein (RBP), was involved in differentiation and polarization of macrophages. However, the role of QKI in sepsis caused by pathogenic microbes, specifically MRSA, is unclear. This study aimed to investigate the role of QKI in regulation of host–pathogen interaction in MRSA-induced sepsis and explored the underlying mechanisms. Methods Transmission electron microscope and immunofluorescence were used to observe the autophagy level in macrophages. Real-time PCR and western blot were used to analyzed the expression of mRNA and protein respectively. The potential protein interaction was analyzed by iTRAQ mass spectrometry and Immunoprecipitation. RNA fluorescence in situ hybridization, dual-luciferase reporter assay and RNA immunoprecipitation were used to explore the mechanism of QKI regulating mRNA of PI3K-p110β. Results The mRNA level of QKI was aberrantly decreased in monocytes and PBMCs of septic patients with the increasing level of plasma procalcitonin (PCT). Then the mice with myeloid specific knockout of QKI was challenged with MRSA or Cecal Ligation and Puncture (CLP). Mice in these two models displayed higher survival rates and lower bacterial loads. Mechanistically, QKI deletion promoted phagocytosis and autophagic degradation of MRSA via activating p110β (a member of Class IA phosphoinositide 3-kinases) mediated autophagic response. QKI expression in macrophages led to the sequestration of p110β in mRNA processing (P) bodies and translational repression. Upon infection, the direct interaction of RNF6, a RING-type E3 ligase, mediated QKI ubiquitination degradation and facilitated PI3K-p110β related autophagic removal of pathogen. The administration of nanoparticles with QKI specific siRNA significantly protected mice from MRSA infection. Conclusions This study disclosed the novel function of QKI in the P body mRNA regulation during infection. QKI degradation in macrophage by RNF6 protects mice from MRSA infection via enhancing PI3K-p110β dependent autophagy. It suggested that QKI may serve as a potential theranostic marker in MRSA-induced sepsis. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13578-022-00865-9.
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Feng X, Yao F, Lang Y, Cao Z. Downregulation of miR-145 alleviates ox-LDL-induced inflammation by targeting QKI in macrophages. Am J Transl Res 2022; 14:4251-4259. [PMID: 35836907 PMCID: PMC9274569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 04/11/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE Atherosclerosis (AS) is a chronic inflammatory disease with high mortality. miRNAs perform a vital role in its development. This study aimed to discuss the effect of miR-145 in AS occurrence and development. METHODS The effects of miR-145 mimics and inhibitors on IL-6, IL-1β and TNF-α expressions were assessed by qRT-PCR and ELISA. CCK-8 was applied to examine the influence of miR-145 on macrophage proliferation. The influence of miR-145 on the QKI transcriptional activity was analyzed using luciferase reporter gene assy. RESULTS Overexpression of miR-145 could enhance the expression of IL-6, IL-1β, and TNF-α. Down-regulation of miR-145 could inhibit the proliferation of macrophages and the expression level of inflammatory cytokines. The effect of miR-145 inhibitor on the expression of inflammatory factors was partially reversed by interfering with the transcription of QKI with siRNA. CONCLUSION miR-145 regulates the inflammatory response induced by macrophage activation through targeting QKI. It provides a means for AS targeted therapy.
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Affiliation(s)
- Xueqiang Feng
- Department of Vascular Intervention, Affiliated Hospital of Weifang Medical UniversityWeifang, Shandong Province, China
| | - Fuwang Yao
- Department of Anesthesiology, Affiliated Hospital of Weifang Medical UniversityWeifang, Shandong Province, China
| | - Yuqin Lang
- Department of Endoscopic Outpatient Operating Room, Affiliated Hospital of Weifang Medical UniversityWeifang, Shandong Province, China
| | - Zhibin Cao
- Department of Endocrinology, Affiliated Hospital of Weifang Medical UniversityWeifang, Shandong Province, China
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Deng L, Wang W, Bian P, Wu M, Wang L, Lei Y, Lu Z, Zhai D. QKI deficiency in macrophages protects mice against JEV infection by regulating cell migration and antiviral response. Mol Immunol 2022; 148:34-44. [PMID: 35665659 DOI: 10.1016/j.molimm.2022.05.119] [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: 01/10/2022] [Revised: 05/07/2022] [Accepted: 05/24/2022] [Indexed: 11/24/2022]
Abstract
Japanese encephalitis (JE) is a major reason to cause viral encephalitis, with 50% patients suffering from severe neuro-inflammation and permanent neural injury. Effective anti-viral treatment is urgently needed. Here, we found RNA binding protein quaking (QKI) was involved in the progression of JE by regulating migration and anti-viral response of macrophages. After JE virus (JEV) infection, QKI-deficient mice had lower viral loads in the brain and fewer neurological symptoms. In comparison with control mice, proinflammatory cytokines in the brain of QKI-deficient animals revealed distinct patterns, with lower levels of IL-6 (interleukin-6) and IFN-β (interferon-β) at the early stage but higher levels at the end of JE. Then we found infiltration of CCR2 positive ((C-C motif) receptor 2) peripheral macrophages and CCR2 expression on macrophages were inhibited in QKI-deficient mice, while the expression of CCR2 ligands was not changed. Bioinformatical analysis showed that a QRE (quaking response element) located on 3'UTR (untranslated region) of Ccr2. We further verified that QKI was able to interact with Ccr2 mRNA and regulate its degradation in vitro. Additionally, since the IFN-β production was increased in QKI-ablation mice after JEV infection, the anti-viral response was analyzed. Results in QKI-silenced N9 cells showed that the expression of RIG-I (retinoic acid-inducible gene-I) and TBK1 (TANK binding kinase 1) was increased, thus further inducing IRF3 (interferon regulatory factor 3) phosphorylation and interferon activation. Overall, these results revealed QKI mediated the anti-viral process via interfering migration of macrophages to CNS (central nervous system) and enhancing RIG-I/IRF3/IFN-β pathway to restrict virus dissemination.
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Affiliation(s)
- Lele Deng
- School of Basic Medicine, Air Force Medical University, No.169, Changle West Road, Xincheng District, Xi'an 710032, Shaanxi Province, China.
| | - Wenwen Wang
- State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Fourth Military Medical University, NO.17, Changle West Road, Xincheng District, Xi'an 710032, Shaanxi Province, China.
| | - Peiyu Bian
- Department of Infectious Diseases, Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, Shaanxi Province, China.
| | - Mengqi Wu
- School of Basic Medicine, Air Force Medical University, No.169, Changle West Road, Xincheng District, Xi'an 710032, Shaanxi Province, China.
| | - Li Wang
- State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Fourth Military Medical University, NO.17, Changle West Road, Xincheng District, Xi'an 710032, Shaanxi Province, China.
| | - Yingfeng Lei
- Department of Microbiology, School of Preclinical Medicine, the Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China.
| | - Zifan Lu
- State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Fourth Military Medical University, NO.17, Changle West Road, Xincheng District, Xi'an 710032, Shaanxi Province, China.
| | - Dongsheng Zhai
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, NO.17, Changle West Road, Xincheng District, Xi'an 710032, Shaanxi Province, China.
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11
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Liu Y, Xue C, Lu H, Zhou Y, Guan R, Wang J, Zhang Q, Ke T, Aschner M, Zhang W, Luo W. Hypoxia causes mitochondrial dysfunction and brain memory disorder in a manner mediated by the reduction of Cirbp. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:151228. [PMID: 34715218 DOI: 10.1016/j.scitotenv.2021.151228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/03/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Environmental hypoxic hazard has increasingly become a global public health issue, with impelling evidences supporting the relation between hypoxia and cognitive disorders. As a potent stressor, hypoxia causes mitochondrial dysfunction with insufficient energy production, thus the formation of brain memory disorder. Yet, the underlying molecular mechanism/s against hypoxia induced injury have yet to be identified. Here, we report that cold inducible RNA binding protein (Cirbp) attenuates hypoxia induced insufficient energy production and oxidative stress. Further analyses show that Cirbp sustains protein levels of respiratory chain complexes II (SDHB) and IV (MT-CO1), and directly binds the 3'UTR of Atp5g3 to control mitochondrial homeostasis and ATP biogenesis upon hypoxic stress. Altogether, our data establish Cirbp as a critical protective factor against hypoxic health hazard and provide novel insights into its latent regulation network.
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Affiliation(s)
- Ying Liu
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Chong Xue
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Huanyu Lu
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Yang Zhou
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Ruili Guan
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Jiye Wang
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Qian Zhang
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Tao Ke
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, United States of America
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, United States of America
| | - Wenbin Zhang
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China.
| | - Wenjing Luo
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China.
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12
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Neumann DP, Goodall GJ, Gregory PA. The Quaking RNA-binding proteins as regulators of cell differentiation. WILEY INTERDISCIPLINARY REVIEWS. RNA 2022; 13:e1724. [PMID: 35298877 PMCID: PMC9786888 DOI: 10.1002/wrna.1724] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 12/30/2022]
Abstract
The RNA-binding protein Quaking (QKI) has emerged as a potent regulator of cellular differentiation in developmental and pathological processes. The QKI gene is itself alternatively spliced to produce three major isoforms, QKI-5, QKI-6, and QKI-7, that possess very distinct functions. Here, we highlight roles of the different QKI isoforms in neuronal, vascular, muscle, and monocyte cell differentiation, and during epithelial-mesenchymal transition in cancer progression. QKI isoforms control cell differentiation through regulating alternative splicing, mRNA stability and translation, with activities in gene transcription now also becoming evident. These diverse functions of the QKI isoforms contribute to their broad influences on RNA metabolism and cellular differentiation. This article is categorized under: RNA Interactions with Proteins and Other Molecules > Protein-RNA Interactions: Functional Implications RNA Processing > Splicing Regulation/Alternative Splicing RNA in Disease and Development > RNA in Development.
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Affiliation(s)
- Daniel P. Neumann
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSouth Australia
| | - Gregory J. Goodall
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSouth Australia,Faculty of Health and Medical SciencesThe University of AdelaideAdelaideSouth Australia
| | - Philip A. Gregory
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSouth Australia,Faculty of Health and Medical SciencesThe University of AdelaideAdelaideSouth Australia
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13
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Liao KC, Chuo V, Fagg WS, Modahl CM, Widen S, Garcia-Blanco MA. The RNA binding protein Quaking represses splicing of the Fibronectin EDA exon and downregulates the interferon response. Nucleic Acids Res 2021; 49:10034-10045. [PMID: 34428287 PMCID: PMC8464043 DOI: 10.1093/nar/gkab732] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 08/06/2021] [Accepted: 08/17/2021] [Indexed: 01/03/2023] Open
Abstract
Quaking (QKI) controls RNA metabolism in many biological processes including innate immunity, where its roles remain incompletely understood. To illuminate these roles, we performed genome scale transcriptome profiling in QKI knockout cells with or without poly(I:C) transfection, a double-stranded RNA analog that mimics viral infection. Analysis of RNA-sequencing data shows that QKI knockout upregulates genes induced by interferons, suggesting that QKI is an immune suppressor. Furthermore, differential splicing analysis shows that QKI primarily controls cassette exons, and among these events, we noted that QKI silences splicing of the extra domain A (EDA) exon in fibronectin (FN1) transcripts. QKI knockout results in elevated production and secretion of FN1-EDA protein, which is a known activator of interferons. Consistent with an upregulation of the interferon response in QKI knockout cells, our results show reduced production of dengue virus-2 and Japanese encephalitis virus in these cells. In conclusion, we demonstrate that QKI downregulates the interferon system and attenuates the antiviral state.
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Affiliation(s)
- Kuo-Chieh Liao
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Vanessa Chuo
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore 169857, Singapore
| | - W Samuel Fagg
- Transplant Division, Department of Surgery, University of Texas Medical Branch, Galveston, TX 77555, USA.,Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Cassandra M Modahl
- Department of Biological Sciences, National University of Singapore, Singapore 119077, Singapore
| | - Steven Widen
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Mariano A Garcia-Blanco
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore 169857, Singapore.,Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX 77555, USA.,Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX 77555, USA.,Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, TX 77555, USA
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14
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Xu Y, Li Z, Huai T, Huo X, Wang H, Bian E, Zhao B. DNMT1 Mediated CAHM Repression Promotes Glioma Invasion via SPAK/JNK Pathway. Cell Mol Neurobiol 2021; 42:2643-2653. [PMID: 34227028 DOI: 10.1007/s10571-021-01125-z] [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] [Received: 02/03/2021] [Accepted: 07/02/2021] [Indexed: 10/20/2022]
Abstract
Gliomas are the most common and fatal brain tumors worldwide. Abnormal DNA promoter methylation is an important mechanism for gene loss of tumor suppressors. A long non-coding RNA colorectal adenocarcinoma hypermethylated (CAHM) has been reported to be nearly deleted in glioblastomas (GBMs). Nevertheless, the roles of CAHM in gliomas remain unknown up to now. In the present study, 969 glioma samples downloaded from the CGGA and Gravendeel databases were included. We found that CAHM expression was correlated with glioma grades, molecular subtype, IDH mutation status, and 1q/19p codel status. In glioma cells, CAHM is hypermethylated by DNA methyltransferase1 (DNMT1) and the loss of CAHM expression could be reversed by 5-Aza-2'-deoxycytidine (5-Aza), a specific inhibitor of DNA methyltransferases. Besides, the expression of CAHM was negatively associated with overall survival in both primary and recurrent gliomas. Moreover, the result of Gene Ontology (GO) analysis suggested that CAHM participated in negatively regulating cell development, nervous system development, neurogenesis, and integrin-mediated signaling pathway. Overexpression of CAHM inhibited glioma cell proliferation, clone formation, and invasion. Further exploring results showed that CAHM overexpression suppressed glioma migration and invasion through SPAK/MAPK pathway. Collectively, this study disclosed that CAHM might be a suppressor in gliomas.
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Affiliation(s)
- Yadi Xu
- Ultrasonography Department, Hubei Hospital of Traditional Chinese Medicine, Wuhan, China
| | - Zelin Li
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Tian Huai
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Xiuhao Huo
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Hongliang Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Erbao Bian
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Bing Zhao
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui, China. .,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China.
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15
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Zeng X, Xia S, Yan X, Hu C, An K, Luo L. High expression of aryl hydrocarbon receptor (AhR) plays an important role in the formation of fibrous epulis. Oral Dis 2021; 28:2258-2266. [PMID: 34139032 DOI: 10.1111/odi.13940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/03/2021] [Accepted: 06/08/2021] [Indexed: 01/09/2023]
Abstract
OBJECTIVES Epulis is considered to be a massive reactive lesion rather than a true neoplasia. AhR is thought to be associated with inflammation and development of neoplasms. Here, we aimed to observe the expression of AhR in fibrous epulis and explore its role and possible mechanism in the pathogenesis of epulis. MATERIALS AND METHODS Epulis and normal gingival tissues were collected, and AhR expression was detected at the mRNA and protein levels by quantitative polymerase chain reaction (qPCR) and immunohistochemistry, respectively. The expression levels of proinflammatory cytokines and apoptosis-related factor genes in human periodontal ligament cells (hPDLCs) and human gingival fibroblasts (hGFs) transfected with AhR short interfering RNA (siRNA) or negative control siRNA, upon stimulation with lipopolysaccharide of Porphyromonas gingivalis (Pg-LPS), were then examined. Finally, the expression levels of the proinflammatory cytokines and apoptosis-related factor genes in the epulis tissues were observed by qPCR. RESULTS AhR expression in fibrous epulis was significantly increased at both the mRNA and protein levels. The expression of proinflammatory cytokines and apoptosis-related factor genes in hPDLCs transfected with AhR siRNA was significantly decreased when stimulated with Pg-LPS. The same trends were observed for hGFs. The opposite trend was detected in the epulis tissues. CONCLUSION AhR may be a key factor in fibrous epulis pathogenesis that acts by regulating the expression of BCL2 family genes and inflammatory factor-related genes.
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Affiliation(s)
- Xuwen Zeng
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Department of Periodontics, School of Stomatology, Tongji University, Shanghai, China
| | - Siying Xia
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Department of Periodontics, School of Stomatology, Tongji University, Shanghai, China
| | - Xiangzhen Yan
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Department of Periodontics, School of Stomatology, Tongji University, Shanghai, China
| | - Congjiao Hu
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Department of Periodontics, School of Stomatology, Tongji University, Shanghai, China
| | - Kangkang An
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Department of Periodontics, School of Stomatology, Tongji University, Shanghai, China
| | - Lijun Luo
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Department of Periodontics, School of Stomatology, Tongji University, Shanghai, China
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16
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Wang W, Zhai D, Bai Y, Xue K, Deng L, Ma L, Du T, Ye Z, Qu D, Xiang A, Chen G, Zhao Y, Wang L, Lu Z. Loss of QKI in macrophage aggravates inflammatory bowel disease through amplified ROS signaling and microbiota disproportion. Cell Death Discov 2021; 7:58. [PMID: 33758177 PMCID: PMC7988119 DOI: 10.1038/s41420-021-00444-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/13/2021] [Accepted: 02/27/2021] [Indexed: 01/20/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a refractory chronic inflammatory illness of the gastrointestinal (GI) tract. Macrophage exerts an important role in IBD development. QKI, as an RNA binding protein, was related with inflammatory responses in bacterial infections by regulating the polarization of macrophages. Therefore, we suspected that QKI-regulated macrophages have the potential to play a certain role in IBD and the underlying mechanism. Our results demonstrated that the mice with macrophage-specific deletion of QKI induced with dextran sodium sulfate (DSS) are more susceptible to IBD development, exhibited a severe leaky gut barrier phenotype and higher intense oxidative stress, which are rescued by treating with butylated hydroxyanisole (BHA), an agonist of NRF2. Mechanically, we observed that Keap1 mRNA in the nucleus was exported to the cytoplasm after LPS stimuli in parallel with QKI reductions, and the removal of QKI by shRNA facilitated Keap1 mRNA nuclear exporting and expression in cytoplasm, consequently NRF2 activation in nucleus was weakened, and led to the impaired antioxidant abilities. In addition, mice models of fecal microbiota transplant (FMT) and the co-culturing of mice epithelia cells with feces derived from the DSS-treated QKI-deficit mice revealed consistently aggravated colitis along with a severe oxidative stress; 16S sequencing analysis substantiated the altered compositions of commensal bacteria too. Overall, the current study represents the first effort to explore the anti-oxidant role of QKI in the intestinal macrophage via post-transcriptional regulation of Keap1 mRNA localization and the relevant NRF2 antioxidant signaling, and the disproportional changes in the microbiota were attributable to the mediation of pathogenic damage in the IBD development of QKI-deficit mice.
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Affiliation(s)
- Wenwen Wang
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Dongsheng Zhai
- Department of Pharmacology, School of Pharmacy, Air Force Medical University, Xi'an, Shaanxi, China
| | - Yongquan Bai
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Ke Xue
- Department of Dermatology, Xijing Hospital, Air Force Medical University, Xi'an, China
| | - Lele Deng
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Lirong Ma
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Tianshu Du
- PLA Institute of Orthopaedics, Xijing Hospital, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Zicheng Ye
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Di Qu
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - An Xiang
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Guo Chen
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Yi Zhao
- Breast Disease Diagnosis and Treatment Center of Affiliated Hospital of Qinghai University & Affiliated Cancer Hospital of Qinghai University, Xining, Qinghai Province, China.
| | - Li Wang
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China.
| | - Zifan Lu
- PLA Institute of State Key Laboratory of Cancer Biology, Department of Biopharmaceutics, Air Force Medical University, No. 17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China.
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17
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Pai S, Njoku DB. The Role of Hypoxia-Induced Mitogenic Factor in Organ-Specific Inflammation in the Lung and Liver: Key Concepts and Gaps in Knowledge Regarding Molecular Mechanisms of Acute or Immune-Mediated Liver Injury. Int J Mol Sci 2021; 22:ijms22052717. [PMID: 33800244 PMCID: PMC7962531 DOI: 10.3390/ijms22052717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 01/15/2023] Open
Abstract
Hypoxia-induced mitogenic factor (HIMF), which is also known as resistin-like molecule α (RELM-α), found in inflammatory zone 1 (FIZZ1), or resistin-like alpha (retlna), is a cysteine-rich secretory protein and cytokine. HIMF has been investigated in the lung as a mediator of pulmonary fibrosis, inflammation and as a marker for alternatively activated macrophages. Although these macrophages have been found to have a role in acute liver injury and acetaminophen toxicity, few studies have investigated the role of HIMF in acute or immune-mediated liver injury. The aim of this focused review is to analyze the literature and examine the effects of HIMF and its human homolog in organ-specific inflammation in the lung and liver. We followed the guidelines set by PRISMA in constructing this review. The relevant checklist items from PRISMA were included. Items related to meta-analysis were excluded because there were no randomized controlled clinical trials. We found that HIMF was increased in most models of acute liver injury and reduced damage from acetaminophen-induced liver injury. We also found strong evidence for HIMF as a marker for alternatively activated macrophages. Our overall risk of bias assessment of all studies included revealed that 80% of manuscripts demonstrated some concerns in the randomization process. We also demonstrated some concerns (54.1%) and high risk (45.9%) of bias in the selection of the reported results. The need for randomization and reduction of bias in the reported results was similarly detected in the studies that focused on HIMF and the liver. In conclusion, we propose that HIMF could be utilized as a marker for M2 macrophages in immune-mediated liver injury. However, we also detected the need for randomized clinical trials and additional experimental and human prospective studies in order to fully comprehend the role of HIMF in acute or immune-mediated liver injury.
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Affiliation(s)
- Sananda Pai
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, MD 21287, USA;
| | - Dolores B. Njoku
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, MD 21287, USA;
- Department of Pediatrics, Johns Hopkins University, Baltimore, MD 21287, USA
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21287, USA
- Correspondence:
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18
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Ameis D, Liu F, Kirby E, Patel D, Keijzer R. The RNA-binding protein Quaking regulates multiciliated and basal cell abundance in the developing lung. Am J Physiol Lung Cell Mol Physiol 2021; 320:L557-L567. [PMID: 33438508 DOI: 10.1152/ajplung.00481.2019] [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: 11/22/2022] Open
Abstract
RNA-binding proteins (RBPs) form complexes with RNA, changing how the RNA is processed and thereby regulating gene expression. RBPs are important sources of gene regulation during organogenesis, including the development of lungs. The RBP called Quaking (QK) is critical for embryogenesis, yet it has not been studied in the developing lung. Here, we show that QK is widely expressed during rat lung development and into adulthood. The QK isoforms QK5 and QK7 colocalize to the nuclei of nearly all lung cells. QK6 is present in the nuclei and cytoplasm of mesenchymal cells and is only present in the epithelium during branching morphogenesis. QK knockdown in embryonic lung explants caused a greater number of multiciliated cells to appear in the airways, at the expense of basal cells. The mRNA of multiciliated cell genes and the abundance of FOXJ1/SOX2+ cells increased after knockdown, whereas P63/SOX2+ cells decreased. The cytokine IL-6, a known regulator of multiciliated cell differentiation, had increased mRNA levels after QK knockdown, although protein levels remained unchanged. Further studies are necessary to confirm whether QK acts as a blocker for the IL-6-induced differentiation of basal cells into multiciliated cells, and a conditional QK knockout would likely lead to additional discoveries on QK's role during lung development.
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Affiliation(s)
- Dustin Ameis
- Departments of Surgery, Division of Pediatric Surgery, Pediatrics & Child Health and Physiology & Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada.,Biology of Breathing Theme, Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Franklin Liu
- Departments of Surgery, Division of Pediatric Surgery, Pediatrics & Child Health and Physiology & Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada.,Biology of Breathing Theme, Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Eimear Kirby
- Departments of Surgery, Division of Pediatric Surgery, Pediatrics & Child Health and Physiology & Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada.,Biology of Breathing Theme, Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Daywin Patel
- Departments of Surgery, Division of Pediatric Surgery, Pediatrics & Child Health and Physiology & Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada.,Biology of Breathing Theme, Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Richard Keijzer
- Departments of Surgery, Division of Pediatric Surgery, Pediatrics & Child Health and Physiology & Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada.,Biology of Breathing Theme, Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
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19
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Does NLRP3 Inflammasome and Aryl Hydrocarbon Receptor Play an Interlinked Role in Bowel Inflammation and Colitis-Associated Colorectal Cancer? Molecules 2020; 25:molecules25102427. [PMID: 32456012 PMCID: PMC7287590 DOI: 10.3390/molecules25102427] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/17/2020] [Accepted: 05/21/2020] [Indexed: 12/22/2022] Open
Abstract
Inflammation is a hallmark in many forms of cancer; with colitis-associated colorectal cancer (CAC) being a progressive intestinal inflammation due to inflammatory bowel disease (IBD). While this is an exemplification of the negatives of inflammation, it is just as crucial to have some degree of the inflammatory process to maintain a healthy immune system. A pivotal component in the maintenance of such intestinal homeostasis is the innate immunity component, inflammasomes. Inflammasomes are large, cytosolic protein complexes formed following stimulation of microbial and stress signals that lead to the expression of pro-inflammatory cytokines. The NOD-, LRR- and pyrin domain-containing protein 3 (NLRP3) inflammasome has been extensively studied in part due to its strong association with colitis and CAC. The aryl hydrocarbon receptor (AhR) has recently been acknowledged for its connection to the immune system aside from its role as an environmental sensor. AhR has been described to play a role in the inhibition of the NLRP3 inflammasome activation pathway. This review will summarise the signalling pathways of both the NLRP3 inflammasome and AhR; as well as new-found links between these two signalling pathways in intestinal immunity and some potential therapeutic agents that have been found to take advantage of this link in the treatment of colitis and CAC.
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20
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Zhang H, Cao N, Yang Z, Fang X, Yang X, Li H, Hong Z, Ji Z. Bilobalide Alleviated Dextran Sulfate Sodium-Induced Experimental Colitis by Inhibiting M1 Macrophage Polarization Through the NF-κB Signaling Pathway. Front Pharmacol 2020; 11:718. [PMID: 32670051 PMCID: PMC7326085 DOI: 10.3389/fphar.2020.00718] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 04/30/2020] [Indexed: 12/17/2022] Open
Abstract
Bilobalide, a unique Ginkgo biloba constituent has attracted significant interest as a novel therapeutic option for neuronal protection. However, there is paucity of data on its effect on colitis. This work sought to evaluate the effect of bilobalide on macrophage polarization in vitro and dextran sulfate sodium (DSS) induced colitis in vivo. Through the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and annexin V/PI assay, it was shown that bilobalide has no significant toxicity on macrophage. Lipopolysaccharide (LPS) and interferon-gamma (IFN-γ) induced macrophage activation and polarization were significantly suppressed by bilobalide as indicated by reduced expression of cytokine, major histocompatibility complex II (MHC-II), and CD11c. Pertinently, the signaling pathway study showed that the phosphorylation of p65 and its nuclear translocation were decreased while STAT1 was not affected. In DSS-treated mice, administration (i.g) of three doses of bilobalide na\mely 1.25 mg/kg (low dose group), 2.5 mg/kg (medium dose group), and 5 mg/kg (high dose group) was performed daily starting from day 1 to day 10. Medium and high dose bilobalide markedly reduced the inflammation of colitis proved via elevation of bodyweight, decrement in disease activity index (DAI), alleviation of colon damage as well as reduction in activity of colon tissue myeloperoxidase activity. In accordance with the in vitro results, the levels of inflammatory cytokines such as interleukin 6 (IL-6), IL-1β, and tumor necrosis factor (TNF-α) in serum as well as messenger RNA (mRNA) expression in colon were obviously reduced in the bilobalide treated groups. Also, factor nuclear factor kappa B (NF-κB) signaling pathway was decreased significantly by bilobalide treatment. Collectively, these results indicated that administration of bilobalide improved experimental colitis via inhibition of M1 macrophage polarization through the NF-κB signaling pathway. Thus, bilobalide could act as a potential drug for the treatment of inflammatory bowel disease (IBD) in the not-too-distant future.
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Affiliation(s)
- Heng Zhang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Nengqi Cao
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Zhilong Yang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Xingchao Fang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Xinyu Yang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Hao Li
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Zhi Hong
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Zhenling Ji
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
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21
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Du T, Yan Z, Zhu S, Chen G, Wang L, Ye Z, Wang W, Zhu Q, Lu Z, Cao X. QKI deficiency leads to osteoporosis by promoting RANKL-induced osteoclastogenesis and disrupting bone metabolism. Cell Death Dis 2020; 11:330. [PMID: 32382069 PMCID: PMC7205892 DOI: 10.1038/s41419-020-2548-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 11/20/2022]
Abstract
Quaking (QKI), an RNA-binding protein, has been reported to exhibit numerous biological functions, such as mRNA regulation, cancer suppression, and anti-inflammation. However, little known about the effects of QKI on bone metabolism. In this study, we used a monocyte/macrophage-specific QKI knockout transgenic mouse model to investigate the effects of QKI deficiency on receptor activator of NF-κB ligand (RANKL)-induced osteoclastogenesis. The loss of QKI promoted the formation of multinucleated tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts (OCs) from bone marrow macrophages, and upregulated the expression of OC-specific markers, including TRAP (Acp5) and cathepsin K (Ctsk). The pro-osteoclastogenesis effect of QKI deficiency was achieved by amplifying the signaling cascades of the NF-κB and mitogen-activated protein kinase (MAPK) pathways; then, signaling upregulated the activation of nuclear factor of activated T cells c1 (NFATc1), which is considered to be the core transcription factor that regulates OC differentiation. In addition, QKI deficiency could inhibit osteoblast (OB) formation through the inflammatory microenvironment. Taken together, our data suggest that QKI deficiency promoted OC differentiation and disrupted bone metabolic balance, and eventually led to osteopenia under physiological conditions and aggravated the degree of osteoporosis under pathological conditions.
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Affiliation(s)
- Tianshu Du
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Zhao Yan
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Shu Zhu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Guo Chen
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Li Wang
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Zichen Ye
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Wenwen Wang
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China
| | - Qingsheng Zhu
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China.
| | - Zifan Lu
- State Key Laboratory of Cancer Biology, Department of Pharmacogenomics, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China.
| | - Xiaorui Cao
- PLA Institute of Orthopaedics, Xijing Hospital, Fourth Military Medical University, No.17, Changle West Road, Xincheng District, Xi'an, Shaanxi Province, China.
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22
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Lu H, Ye Z, Zhai Y, Wang L, Liu Y, Wang J, Zhang W, Luo W, Lu Z, Chen J. QKI regulates adipose tissue metabolism by acting as a brake on thermogenesis and promoting obesity. EMBO Rep 2020; 21:e47929. [PMID: 31868295 PMCID: PMC6944952 DOI: 10.15252/embr.201947929] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 10/22/2019] [Accepted: 11/08/2019] [Indexed: 12/31/2022] Open
Abstract
Adipose tissue controls numerous physiological processes, and its dysfunction has a causative role in the development of systemic metabolic disorders. The role of posttranscriptional regulation in adipose metabolism has yet to be fully understood. Here, we show that the RNA-binding protein quaking (QKI) plays an important role in controlling metabolic homeostasis of the adipose tissue. QKI-deficient mice are resistant to high-fat-diet (HFD)-induced obesity. Additionally, QKI depletion increased brown fat energy dissipation and browning of subcutaneous white fat. Adipose tissue-specific depletion of QKI in mice enhances cold-induced thermogenesis, thereby preventing hypothermia in response to cold stimulus. Further mechanistic analysis reveals that QKI is transcriptionally induced by the cAMP-cAMP response element-binding protein (CREB) axis and restricts adipose tissue energy consumption by decreasing stability, nuclear export, and translation of mRNAs encoding UCP1 and PGC1α. These findings extend our knowledge of the significance of posttranscriptional regulation in adipose metabolic homeostasis and provide a potential therapeutic target to defend against obesity and its related metabolic diseases.
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Affiliation(s)
- Huanyu Lu
- Department of Occupational and Environmental Healththe Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational EnvironmentSchool of Public HealthFourth Military Medical UniversityXi'anChina
| | - Zichen Ye
- State Key Laboratory of Cancer BiologyDepartment of PharmacogenomicsSchool of PharmacyFourth Military Medical UniversityXi'anChina
| | - Yue Zhai
- Department of Cell BiologyFourth Military Medical UniversityXi'anChina
| | - Li Wang
- State Key Laboratory of Cancer BiologyDepartment of PharmacogenomicsSchool of PharmacyFourth Military Medical UniversityXi'anChina
| | - Ying Liu
- Department of Occupational and Environmental Healththe Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational EnvironmentSchool of Public HealthFourth Military Medical UniversityXi'anChina
| | - Jiye Wang
- Department of Occupational and Environmental Healththe Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational EnvironmentSchool of Public HealthFourth Military Medical UniversityXi'anChina
| | - Wenbin Zhang
- Department of Occupational and Environmental Healththe Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational EnvironmentSchool of Public HealthFourth Military Medical UniversityXi'anChina
| | - Wenjing Luo
- Department of Occupational and Environmental Healththe Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational EnvironmentSchool of Public HealthFourth Military Medical UniversityXi'anChina
| | - Zifan Lu
- State Key Laboratory of Cancer BiologyDepartment of PharmacogenomicsSchool of PharmacyFourth Military Medical UniversityXi'anChina
| | - Jingyuan Chen
- Department of Occupational and Environmental Healththe Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational EnvironmentSchool of Public HealthFourth Military Medical UniversityXi'anChina
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23
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Liao KC, Chuo V, Fagg WS, Bradrick SS, Pompon J, Garcia-Blanco MA. The RNA binding protein Quaking represses host interferon response by downregulating MAVS. RNA Biol 2019; 17:366-380. [PMID: 31829086 DOI: 10.1080/15476286.2019.1703069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Quaking (QKI) is an RNA-binding protein (RBP) involved in multiple aspects of RNA metabolism and many biological processes. Despite a known immune function in regulating monocyte differentiation and inflammatory responses, the degree to which QKI regulates the host interferon (IFN) response remains poorly characterized. Here we show that QKI ablation enhances poly(I:C) and viral infection-induced IFNβ transcription. Characterization of IFN-related signalling cascades reveals that QKI knockout results in higher levels of IRF3 phosphorylation. Interestingly, complementation with QKI-5 isoform alone is sufficient to rescue this phenotype and reduce IRF3 phosphorylation. Further analysis shows that MAVS, but not RIG-I or MDA5, is robustly upregulated in the absence of QKI, suggesting that QKI downregulates MAVS and thus represses the host IFN response. As expected, MAVS depletion reduces IFNβ activation and knockout of MAVS in the QKI knockout cells completely abolishes IFNβ induction. Consistently, ectopic expression of RIG-I activates stronger IFNβ induction via MAVS-IRF3 pathway in the absence of QKI. Collectively, these findings demonstrate a novel role for QKI in negatively regulating host IFN response by reducing MAVS levels.
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Affiliation(s)
- Kuo-Chieh Liao
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
| | - Vanessa Chuo
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore
| | - W Samuel Fagg
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, USA.,Department of Surgery, Transplant Division, The University of Texas Medical Branch, Galveston, TX, USA
| | - Shelton S Bradrick
- Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, USA
| | - Julien Pompon
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore.,IRD, CNRS, Université de Montpellier, Montpellier, France
| | - Mariano A Garcia-Blanco
- Programme in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore.,Department of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX, USA
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24
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Montoya A, Elgueta D, Campos J, Chovar O, Falcón P, Matus S, Alfaro I, Bono MR, Pacheco R. Dopamine receptor D3 signalling in astrocytes promotes neuroinflammation. J Neuroinflammation 2019; 16:258. [PMID: 31810491 PMCID: PMC6896356 DOI: 10.1186/s12974-019-1652-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 11/19/2019] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Neuroinflammation constitutes a pathogenic process leading to neurodegeneration in several disorders, including Alzheimer's disease, Parkinson's disease (PD) and sepsis. Despite microglial cells being the central players in neuroinflammation, astrocytes play a key regulatory role in this process. Our previous results indicated that pharmacologic-antagonism or genetic deficiency of dopamine receptor D3 (DRD3) attenuated neuroinflammation and neurodegeneration in two mouse models of PD. Here, we studied how DRD3-signalling affects the dynamic of activation of microglia and astrocyte in the context of systemic inflammation. METHODS Neuroinflammation was induced by intraperitoneal administration of LPS. The effect of genetic DRD3-deficiency or pharmacologic DRD3-antagonism in the functional phenotype of astrocytes and microglia was determined by immunohistochemistry and flow cytometry at different time-points. RESULTS Our results show that DRD3 was expressed in astrocytes, but not in microglial cells. DRD3 deficiency resulted in unresponsiveness of astrocytes and in attenuated microglial activation upon systemic inflammation. Furthermore, similar alterations in the functional phenotypes of glial cells were observed by DRD3 antagonism and genetic deficiency of DRD3 upon LPS challenge. Mechanistic analyses show that DRD3 deficiency resulted in exacerbated expression of the anti-inflammatory protein Fizz1 in glial cells both in vitro and in vivo. CONCLUSIONS These results suggest that DRD3 signalling regulates the dynamic of the acquisition of pro-inflammatory and anti-inflammatory features by astrocytes and microglia, finally favouring microglial activation and promoting neuroinflammation.
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Affiliation(s)
- Andro Montoya
- Fundación Ciencia & Vida, Avenida Zañartu #1482, Ñuñoa, 7780272, Santiago, Chile
| | - Daniela Elgueta
- Fundación Ciencia & Vida, Avenida Zañartu #1482, Ñuñoa, 7780272, Santiago, Chile
| | - Javier Campos
- Fundación Ciencia & Vida, Avenida Zañartu #1482, Ñuñoa, 7780272, Santiago, Chile
| | - Ornella Chovar
- Fundación Ciencia & Vida, Avenida Zañartu #1482, Ñuñoa, 7780272, Santiago, Chile
| | - Paulina Falcón
- Fundación Ciencia & Vida, Avenida Zañartu #1482, Ñuñoa, 7780272, Santiago, Chile.,Facultad de Medicina y Ciencia, Universidad San Sebastián, Providencia, 7510157, Santiago, Chile
| | - Soledad Matus
- Fundación Ciencia & Vida, Avenida Zañartu #1482, Ñuñoa, 7780272, Santiago, Chile.,Facultad de Medicina y Ciencia, Universidad San Sebastián, Providencia, 7510157, Santiago, Chile.,Center for Geroscience, Brain Health and Metabolism, 7800003, Santiago, Chile
| | - Iván Alfaro
- Fundación Ciencia & Vida, Avenida Zañartu #1482, Ñuñoa, 7780272, Santiago, Chile.,Instituto de Ciencias e Innovación en Medicina, Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Las Condes, 7590943, Santiago, Chile
| | - María Rosa Bono
- Departamento de Biología, Facultad de Ciencias, Universidad de Chile, 7800003, Santiago, Chile
| | - Rodrigo Pacheco
- Fundación Ciencia & Vida, Avenida Zañartu #1482, Ñuñoa, 7780272, Santiago, Chile. .,Facultad de Medicina y Ciencia, Universidad San Sebastián, Providencia, 7510157, Santiago, Chile. .,Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andres Bello, 8370146, Santiago, Chile.
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25
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Shi F, Deng Z, Zhou Z, Jiang CY, Zhao RZ, Sun F, Cui D, Bei XY, Yang BY, Sun Q, Wang XJ, Wu Q, Xia SJ, Han BM. QKI-6 inhibits bladder cancer malignant behaviours through down-regulating E2F3 and NF-κB signalling. J Cell Mol Med 2019; 23:6578-6594. [PMID: 31449345 PMCID: PMC6787450 DOI: 10.1111/jcmm.14481] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/13/2019] [Accepted: 05/15/2019] [Indexed: 02/06/2023] Open
Abstract
Quaking homolog (QKI) is a member of the RNA‐binding signal transduction and activator of proteins family. Previous studies showed that QKI possesses the tumour suppressor activity in human cancers by interacting with the 3'‐untraslated region (3'‐UTR) of various gene transcripts via the STAR domain. This study first assessed the association of QKI‐6 expression with clinicopathological and survival data from bladder cancer patients and then investigated the underlying molecular mechanisms. Bladder cancer tissues (n = 223) were subjected to immunohistochemistry, and tumour cell lines and nude mice were used for different in vitro and in vivo assays following QKI‐6 overexpression or knockdown. QKI‐6 down‐regulation was associated with advanced tumour TNM stages and poor patient overall survival. QKI‐6 overexpression inhibited bladder cancer cell growth and invasion capacity, but induced tumour cell apoptosis and cell cycle arrest. Furthermore, ectopic expression of QKI‐6 reduced tumour xenograft growth and expression of proliferation markers, Ki67 and PCNA. However, knockdown of QKI‐6 expression had opposite effects in vitro and in vivo. QKI‐6 inhibited expression of E2 transcription factor 3 (E2F3) by directly binding to the E2F3 3'‐UTR, whereas E2F3 induced QKI‐6 transcription by binding to the QKI‐6 promoter in negative feedback mechanism. QKI‐6 expression also suppressed activity and expression of nuclear factor‐κB (NF‐κB) signalling proteins in vitro, implying a novel multilevel regulatory network downstream of QKI‐6. In conclusion, QKI‐6 down‐regulation contributes to bladder cancer development and progression.
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Affiliation(s)
- Fei Shi
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Zheng Deng
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Zheng Zhou
- Department of Urology, Shanghai General Hospital Affiliated to Nanjing Medical University, Shanghai, China
| | - Chen-Yi Jiang
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Rui-Zhe Zhao
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Feng Sun
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, China
| | - Di Cui
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao-Yu Bei
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, China
| | - Bo-Yu Yang
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Qian Sun
- Department of Urology, Shanghai General Hospital Affiliated to Nanjing Medical University, Shanghai, China
| | - Xing-Jie Wang
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, China
| | - Qi Wu
- Department of Urology, Shanghai General Hospital Affiliated to Nanjing Medical University, Shanghai, China
| | - Shu-Jie Xia
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, China
| | - Bang-Min Han
- Department of Urology, School of Medicine, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China.,Institute of Urology, Shanghai Jiao Tong University, Shanghai, China
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26
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Kim EJ, Kim JS, Lee S, Lee H, Yoon JS, Hong JH, Chun SH, Sun DS, Won HS, Hong SA, Kang K, Jo JY, Choi M, Shin DH, Ahn YH, Ko YH. QKI, a miR-200 target gene, suppresses epithelial-to-mesenchymal transition and tumor growth. Int J Cancer 2019; 145:1585-1595. [PMID: 31026342 DOI: 10.1002/ijc.32372] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 03/28/2019] [Accepted: 04/17/2019] [Indexed: 12/11/2022]
Abstract
The microRNA-200 (miR-200) family plays a major role in specifying epithelial phenotype by preventing expression of the transcription repressors ZEB1 and ZEB2, which are well-known regulators of the epithelial-to-mesenchymal transition (EMT) in epithelial tumors including oral squamous cell carcinoma (OSCC). Here, we elucidated whether miR-200 family members control RNA-binding protein quaking (QKI), a newly identified tumor suppressor that is regulated during EMT. We predicted that miR-200a and miR-200b could recognize QKI 3'-UTR by analyzing TargetScan and The Cancer Genome Atlas head and neck squamous cell carcinoma (HNSCC) dataset. Forced expression of miR-200b/a/429 inhibited expression of ZEB1/2 and decreased cell migration in OSCC cell lines CAL27 and HSC3. QKI expression was also suppressed by miR-200 overexpression, and the 3'-UTR of QKI mRNA was directly targeted by miR-200 in luciferase reporter assays. Interestingly, shRNA-mediated knockdown of QKI led to pronounced EMT and protumor effects in both in vitro and in vivo studies of OSCC. Furthermore, high expression of QKI protein is associated with favorable prognosis in surgically resected HNSCC and lung adenocarcinoma. In conclusion, QKI increases during EMT and is targeted by miR-200; while, it suppresses EMT and tumorigenesis. We suggest that QKI and miR-200 form a negative feedback loop to maintain homeostatic responses to EMT-inducing signals.
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Affiliation(s)
- Eun Ju Kim
- Department of Molecular Medicine and Tissue Injury Defense Research Center, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Jeong Seon Kim
- Department of Molecular Medicine and Tissue Injury Defense Research Center, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Sieun Lee
- Department of Molecular Medicine and Tissue Injury Defense Research Center, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Heejin Lee
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jung-Sook Yoon
- Clinical Research Laboratory, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Gyeonggi, South Korea
| | - Ji Hyung Hong
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sang Hoon Chun
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Der Sheng Sun
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hye Sung Won
- Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Soon Auck Hong
- Department of Pathology, College of Medicine, Chung-Ang University, Seoul, South Korea
| | - Keunsoo Kang
- Department of Microbiology, College of Natural Sciences, Dankook University, Cheonan, Chungnam, South Korea
| | - Jeong Yeon Jo
- Research Institute and Department of Cancer Biomedical Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Gyeonggi, South Korea
| | - Minyoung Choi
- Research Institute and Department of Cancer Biomedical Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Gyeonggi, South Korea
| | - Dong Hoon Shin
- Research Institute and Department of Cancer Biomedical Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Gyeonggi, South Korea
| | - Young-Ho Ahn
- Department of Molecular Medicine and Tissue Injury Defense Research Center, College of Medicine, Ewha Womans University, Seoul, South Korea
| | - Yoon Ho Ko
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, South Korea.,Division of Oncology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
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27
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Wang C, Petriello MC, Zhu B, Hennig B. PCB 126 induces monocyte/macrophage polarization and inflammation through AhR and NF-κB pathways. Toxicol Appl Pharmacol 2019; 367:71-81. [PMID: 30768972 DOI: 10.1016/j.taap.2019.02.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 01/25/2019] [Accepted: 02/11/2019] [Indexed: 02/07/2023]
Abstract
Polychlorinated biphenyls (PCBs) are persistent organic pollutants that contribute to inflammatory diseases such as atherosclerosis, and macrophages play a key role in the overall inflammatory response. Depending on specific environmental stimuli, macrophages can be polarized either to pro-inflammatory (e.g., M1) or anti-inflammatory (e.g., M2) phenotypes. We hypothesize that dioxin-like PCBs can contribute to macrophage polarization associated with inflammation. To test this hypothesis, human monocytes (THP-1) were differentiated to macrophages and subsequently exposed to PCB 126. Exposure to PCB 126, but not to PCB 153 or 118, significantly induced the expression of inflammatory cytokines, including TNFα and IL-1β, suggesting polarization to the pro-inflammatory M1 phenotype. Additionally, monocyte chemoattractant protein-1 (MCP-1) was increased in PCB 126-activated macrophages, suggesting induction of chemokines which regulate immune cell recruitment and infiltration of monocytes/macrophages into vascular tissues. In addition, oxidative stress sensitive markers including nuclear factor (erythroid-derived 2)-like 2 (NFE2L2; Nrf2) and down-stream genes, such as heme oxygenase 1 (HMOX1) and NAD(P)H quinone oxidoreductase 1 (NQO1), were induced following PCB 126 exposure. Since dioxin-like PCBs may elicit inflammatory cascades through multiple mechanisms, we then pretreated macrophages with both aryl hydrocarbon receptor (AhR) and NF-κB antagonists prior to PCB treatment. The NF-κB antagonist BMS-345541 significantly decreased mRNA and protein levels of multiple cytokines by approximately 50% compared to PCB treatment alone, but the AhR antagonist CH-223191 was protective to a lesser degree. Our data demonstrate the involvement of PCB 126 in macrophage polarization and inflammation, indicating another important role of dioxin-like PCBs in the pathology of atherosclerosis.
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Affiliation(s)
- Chunyan Wang
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA
| | - Michael C Petriello
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA; Cardiovascular Medicine, University of Kentucky, Lexington, KY, USA
| | - Beibei Zhu
- Department of Internal Medicine, Division of Endocrinology, Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Bernhard Hennig
- University of Kentucky Superfund Research Center, University of Kentucky, Lexington, KY, USA; Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, USA.
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