1
|
Wang H, Fang F, Zhang M, Xu C, Liu J, Gao L, Zhao C, Wang Z, Zhong Y, Wang X. Nuclear receptor 4A1 ameliorates renal fibrosis by inhibiting vascular endothelial growth factor A induced angiogenesis in UUO rats. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119813. [PMID: 39142522 DOI: 10.1016/j.bbamcr.2024.119813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 07/29/2024] [Accepted: 08/01/2024] [Indexed: 08/16/2024]
Abstract
INTRODUCTION Angiogenesis is closely related to renal fibrosis; however, its basic mechanism remains unclear. In our study, we found that nuclear receptor 4A1 (NR4A1) inhibits vascular endothelial growth factor A (VEGFA)-induced angiogenesis, ameliorating renal fibrosis. METHODS We prepared a renal fibrosis animal model with unilateral ureteral obstruction (UUO) and NR4A1 knockdown UUO mice model, Using Human umbilical vein endothelial cells (HUVECs) to conduct all in vitro experiments. We then detected and analyzed the expression levels of NR4A1 and other genes related to angiogenesis and fibrosis. RESULTS The angiogenesis related genes, such as VEGFA, vascular endothelial growth factor receptor-2 (VEGFR-2), endoglin (CD105), as well as the expression of fibrosis related genes that included, α-smooth muscle actin (α-SMA), Vimentin, and Collagen I are all significantly increased in the UUO rat model. In addition, the expression of NR4A1 of the kidney tissue of UUO rats was significantly reduced. Therefore, according to the above results, we speculated that angiogenesis may exacerbate renal fibrosis and NR4A1 may repress renal fibrosis by inhibiting angiogenesis. To further verify the above results, we used VEGFA to stimulate HUVECs with (or without) overexpression or knockdown of NR4A1. The results showed that with prolonged stimulation using VEGFA, the expression of NR4A1 decreases. Overexpression of NR4A1 significantly inhibits the expression of related indicators of angiogenesis and renal fibrosis. Furthermore, knockdown of NR4A1 induces endothelial cell proliferation and migration; therefore, exacerbating angiogenesis and fibrosis. Finally, the results of NR4A1 knockdown UUO mice showed that knockdown of NR4A1 can aggravating kidney damage and induce the expression of angiogenesis and renal fibrosis related indicators, while UUO can significantly induce kidney damage, angiogenesis and renal fibrosis. When knockdown of NR4A1, renal kidney damage, angiogenesis and fibrosis becomes more severe than UUO. Thus, all of these results indicate that NR4A1 can ameliorate renal fibrosis by inhibiting angiogenesis. CONCLUSIONS NR4A1 can inhibit angiogenesis to ameliorate renal fibrosis.
Collapse
Affiliation(s)
- Hongshuang Wang
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Fang Fang
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Mengjuan Zhang
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Chang Xu
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Jiazhi Liu
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Lanjun Gao
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Chenchen Zhao
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Zheng Wang
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China; Hebei Key Laboratory of Integrative Medicine on Liver-kidney Patterns, Shijiazhuang 050091, China; Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Yan Zhong
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China; Hebei Key Laboratory of Integrative Medicine on Liver-kidney Patterns, Shijiazhuang 050091, China; Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China.
| | - Xiangting Wang
- Hebei University of Chinese Medicine, Shijiazhuang 050091, China.
| |
Collapse
|
2
|
Pang Q, Chen L, An C, Zhou J, Xiao H. Single-cell and bulk RNA sequencing highlights the role of M1-like infiltrating macrophages in antibody-mediated rejection after kidney transplantation. Heliyon 2024; 10:e27865. [PMID: 38524599 PMCID: PMC10958716 DOI: 10.1016/j.heliyon.2024.e27865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 03/07/2024] [Indexed: 03/26/2024] Open
Abstract
Background Antibody-mediated rejection (ABMR) significantly affects transplanted kidney survival, yet the macrophage phenotype, ontogeny, and mechanisms in ABMR remain unclear. Method We analyzed post-transplant sequencing and clinical data from GEO and ArrayExpress. Using dimensionality reduction and clustering on scRNA-seq data, we identified macrophage subpopulations and compared their infiltration in ABMR and non-rejection cases. Cibersort quantified these subpopulations in bulk samples. Cellchat, SCENIC, monocle2, and monocle3 helped explore intercellular interactions, predict transcription factors, and simulate differentiation of cell subsets. The Scissor method linked macrophage subgroups with transplant prognosis. Furthermore, hdWGCNA, nichnet, and lasso regression identified key genes associated with core transcription factors in selected macrophages, validated by external datasets. Results Six macrophage subgroups were identified in five post-transplant kidney biopsies. M1-like infiltrating macrophages, prevalent in ABMR, correlated with pathological injury severity. MIF acted as a primary intercellular signal in these macrophages. STAT1 regulated monocyte-to-M1-like phenotype transformation, impacting transplant prognosis via the IFNγ pathway. The prognostic models built on the upstream and downstream genes of STAT1 effectively predicted transplant survival. The TLR4-STAT1-PARP9 axis may regulate the pro-inflammatory phenotype of M1-like infiltrating macrophages, identifying PARP9 as a potential target for mitigating ABMR inflammation. Conclusion Our study delineates the macrophage landscape in ABMR post-kidney transplantation, underscoring the detrimental impact of M1-like infiltrating macrophages on ABMR pathology and prognosis.
Collapse
Affiliation(s)
- Qidan Pang
- Department of Nephrology, Bishan Hospital of Chongqing Medical University, Chongqing, 402760, China
| | - Liang Chen
- Department of General Surgery/Gastrointestinal Surgery, Bishan Hospital of Chongqing Medical University, Chongqing, 402760, China
| | - Changyong An
- Department of General Surgery/Gastrointestinal Surgery, Bishan Hospital of Chongqing Medical University, Chongqing, 402760, China
| | - Juan Zhou
- Department of Nephrology, Bishan Hospital of Chongqing Medical University, Chongqing, 402760, China
| | - Hanyu Xiao
- Department of General Surgery/Gastrointestinal Surgery, Bishan Hospital of Chongqing Medical University, Chongqing, 402760, China
| |
Collapse
|
3
|
Zhang T, Ma R, Li Z, Liu T, Yang S, Li N, Wang D. Nur77 alleviates cardiac fibrosis by upregulating GSK-3β transcription during aging. Eur J Pharmacol 2024; 965:176290. [PMID: 38158109 DOI: 10.1016/j.ejphar.2023.176290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 11/23/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024]
Abstract
Cardiac fibrosis is associated with aging, for which no targeted therapies are available. With aging, the levels of nerve growth factor-induced gene B (Nur77) are reduced during cardiac remodelling; however, its role in cardiac fibrosis in aging remains unclear. Here, we found that Nur77 knockout increased cardiac structure abnormalities, systolic and diastolic dysfunction, cardiac hypertrophy, and fibrotic marker expression in 15-month-old mice. Furthermore, Nur77 deficiency induced collagen type I (Col-1) and α-smooth muscle actin overproduction in transforming growth factor beta (TGF-β) treated H9c2 cells, whereas Nur77 overexpression attenuated this effect. Nur77 deficiency in vivo and in vitro downregulated glycogen synthase kinase (GSK)-3β expression and increased β-catenin activity, while its overexpression increased GSK-3β expression. GSK-3β knockdown counteracted the anti-fibrotic effect of Nur77 on TGF-β-treated H9c2 cells. Chromatin immunoprecipitation and luciferase reporter assay results suggested GSK-3β as the direct target of Nur77. Our findings suggest that Nur77 directly initiates GSK-3β transcription and age-related cardiac fibrosis partly through the GSK-3β/β-catenin pathway. This study proposes a novel mechanism for Nur77 regulating cardiac fibrosis and suggests Nur77 as a target for the prevention and treatment of aging-associated cardiac fibrosis and heart failure.
Collapse
Affiliation(s)
- Tiantian Zhang
- Department of Geriatrics, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China
| | - Ruzhe Ma
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Zhichi Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Tingting Liu
- Department of Geriatrics, The First Hospital of China Medical University, Shenyang, 110001, Liaoning, People's Republic of China
| | - Sijia Yang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Na Li
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China
| | - Difei Wang
- Department of Gerontology and Geriatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, People's Republic of China.
| |
Collapse
|
4
|
Lin G, Jiang H, Zhang Z, Ning L, Zhang W, Peng L, Xu S, Sun W, Tao S, Zhang T, Tang L. Molecular mechanism of NR4A1/MDM2/P53 signaling pathway regulation inducing ferroptosis in renal tubular epithelial cells involved in the progression of renal ischemia-reperfusion injury. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166968. [PMID: 38008232 DOI: 10.1016/j.bbadis.2023.166968] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 10/26/2023] [Accepted: 11/20/2023] [Indexed: 11/28/2023]
Abstract
Revealing the possible molecular mechanism of the NR4A1 (nuclear receptor subfamily 4 group A member 1)-MDM2 (MDM2 proto-oncogene)-P53 (tumor protein p53) signaling pathway that induces ferroptosis in renal tubular epithelial cells. Renal ischemia-reperfusion injury (RIRI) -related datasets were obtained from the GEO database. Differentially expressed genes in RIRI were analyzed using R language, intersected with RIRI-related genes in the GeneCard database, and retrieved from the literature to finally obtain differential ferroptosis-related genes. An in vitro cell model of RIRI was constructed using mouse renal cortical proximal tubule epithelial cells (mRTEC cells) treated with hypoxia-reoxygenation (H/R). Bioinformatic analysis showed that NR4A1 may be involved in RIRI through the induction of ferroptosis; in addition, we predicted through online databases that the downstream target gene of NR4A1, MDM2, could be targeted and regulated by ChIP and dual luciferase assays, and that NR4A1 could prevent MDM2 by inhibiting it, and NR4A1 was able to promote ferroptosis by inhibiting the ubiquitinated degradation of P53. NR4A1 expression was significantly increased in mRTEC cells in the hypoxia/reoxygenation model, and the expression of ferroptosis-related genes was increased in vitro experiments. NR4A1 reduces the ubiquitinated degradation of P53 by targeting the inhibition of MDM2 expression, thereby inducing ferroptosis and ultimately exacerbating RIRI by affecting the oxidative respiration process in mitochondria and producing oxidized lipids. This study presents a novel therapeutic approach for the clinical treatment of renal ischemia-reperfusion injury by developing drugs that inhibit NR4A1 to alleviate kidney damage caused by renal ischemia-reperfusion.
Collapse
Affiliation(s)
- Guangzheng Lin
- Department of Urology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Heng Jiang
- Department of General Surgery, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Zhihui Zhang
- Department of Urology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Ling Ning
- Department of Infectious Diseases, The First Affiliated Hospital of USTC (Anhui Provincial Hospital), Hefei 230000, PR China
| | - Wenbo Zhang
- Department of Urology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Longfei Peng
- Department of Urology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Shen Xu
- Department of Urology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Wei Sun
- Department of Urology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China
| | - Sha Tao
- Second School of Clinical Medicine, Anhui Medical University, Hefei 230601, PR China
| | - Tao Zhang
- Department of Urology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China.
| | - Liang Tang
- Department of Urology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, PR China.
| |
Collapse
|
5
|
Wang H, Zhang M, Fang F, Xu C, Liu J, Gao L, Zhao C, Wang Z, Zhong Y, Wang X. The nuclear receptor subfamily 4 group A1 in human disease. Biochem Cell Biol 2023; 101:148-159. [PMID: 36861809 DOI: 10.1139/bcb-2022-0331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Nuclear receptor 4A1 (NR4A1), a member of the NR4A subfamily, acts as a gene regulator in a wide range of signaling pathways and responses to human diseases. Here, we provide a brief overview of the current functions of NR4A1 in human diseases and the factors involved in its function. A deeper understanding of these mechanisms can potentially improve drug development and disease therapy.
Collapse
Affiliation(s)
- Hongshuang Wang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Mengjuan Zhang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Fang Fang
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Chang Xu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Jiazhi Liu
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Lanjun Gao
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Chenchen Zhao
- Graduate School, Hebei University of Chinese Medicine, Shijiazhuang 050091, China
| | - Zheng Wang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, China.,Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Yan Zhong
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, China.,Institute of Integrative Medicine, College of Integrative Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Xiangting Wang
- Hebei Key Laboratory of Integrative Medicine on Liver-Kidney Patterns Research, Shijiazhuang 050091, China
| |
Collapse
|
6
|
Cao Y, Du Y, Jia W, Ding J, Yuan J, Zhang H, Zhang X, Tao K, Yang Z. Identification of biomarkers for the diagnosis of chronic kidney disease (CKD) with non-alcoholic fatty liver disease (NAFLD) by bioinformatics analysis and machine learning. Front Endocrinol (Lausanne) 2023; 14:1125829. [PMID: 36923221 PMCID: PMC10009268 DOI: 10.3389/fendo.2023.1125829] [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: 12/16/2022] [Accepted: 02/09/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) and non-alcoholic fatty liver disease (NAFLD) are closely related to immune and inflammatory pathways. This study aimed to explore the diagnostic markers for CKD patients with NAFLD. METHODS CKD and NAFLD microarray data sets were screened from the GEO database and analyzed the differentially expressed genes (DEGs) in GSE10495 of CKD date set. Weighted Gene Co-Expression Network Analysis (WGCNA) method was used to construct gene coexpression networks and identify functional modules of NAFLD in GSE89632 date set. Then obtaining NAFLD-related share genes by intersecting DEGs of CKD and modular genes of NAFLD. Then functional enrichment analysis of NAFLD-related share genes was performed. The NAFLD-related hub genes come from intersection of cytoscape software and machine learning. ROC curves were used to examine the diagnostic value of NAFLD related hub genes in the CKD data sets and GSE89632 date set of NAFLD. CIBERSORTx was also used to explore the immune landscape in GSE104954, and the correlation between immune infiltration and hub genes expression was investigated. RESULTS A total of 45 NAFLD-related share genes were obtained, and 4 were NAFLD-related hub genes. Enrichment analysis showed that the NAFLD-related share genes were significantly enriched in immune-related pathways, programmed cell death, and inflammatory response. ROC curve confirmed 4 NAFLD-related hub genes in CKD training set GSE104954 and other validation sets. Then they were used as diagnostic markers for CKD. Interestingly, these 4 diagnostic markers of CKD also showed good diagnostic value in the NAFLD date set GSE89632, so these genes may be important targets of NAFLD in the development of CKD. The expression levels of the 4 diagnostic markers for CKD were significantly correlated with the infiltration of immune cells. CONCLUSION 4 NAFLD-related genes (DUSP1, NR4A1, FOSB, ZFP36) were identified as diagnostic markers in CKD patients with NAFLD. Our study may provide diagnostic markers and therapeutic targets for CKD patients with NAFLD.
Collapse
Affiliation(s)
- Yang Cao
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Yiwei Du
- Department of Nephrology, Tangdu Hospital, The Fourth Military Medical University, Xi’an, China
| | - Weili Jia
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Jian Ding
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Juzheng Yuan
- Department of General Surgery, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Hong Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - Xuan Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
- *Correspondence: Xuan Zhang, ; Kaishan Tao, ; Zhaoxu Yang,
| | - Kaishan Tao
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
- *Correspondence: Xuan Zhang, ; Kaishan Tao, ; Zhaoxu Yang,
| | - Zhaoxu Yang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
- *Correspondence: Xuan Zhang, ; Kaishan Tao, ; Zhaoxu Yang,
| |
Collapse
|
7
|
Bai J, Pu X, Zhang Y, Dai E. Renal tubular gen e biomarkers identification based on immune infiltrates in focal segmental glomerulosclerosis. Ren Fail 2022; 44:966-986. [PMID: 35713363 PMCID: PMC9225740 DOI: 10.1080/0886022x.2022.2081579] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
OBJECTIVE The present study identified novel renal tubular biomarkers that may influence the diagnosis and treatment of focal segmental glomerulosclerosis (FSGS) based on immune infiltration. METHODS Three FSGS microarray datasets, GSE108112, GSE133288 and GSE121211, were downloaded from the Gene Expression Omnibus (GEO) database. The R statistical software limma package and the combat function of the sva package were applied for preprocessing and to remove the batch effects. Differentially expressed genes (DEGs) between 120 FSGS and 15 control samples were identified with the limma package. Disease Ontology (DO) pathway enrichment analysis was conducted with statistical R software to search for related diseases. Gene set enrichment analysis (GSEA) was used to interpret the gene expression data and it revealed many common biological pathways. A protein-protein interaction (PPI) network was built using the Search Tool for the Retrieval of Interacting Genes (STRING) database, and hub genes were identified by the Cytoscape (version 3.7.2) plug-in CytoHubba. The plug-in Molecular Complex Detection (MCODE) was used to screen hub modules of the PPI network in Cytoscape, while functional analysis of the hub genes and hub nodes involved in the submodule was performed by ClusterProfiler. The least absolute shrinkage and selection operator (LASSO) regression and support vector machine recursive feature elimination (SVM-RFE) analysis were used to screen characteristic genes and build a logistic regression model. Receiver operating characteristic (ROC) curve analyses were used to investigate the logistic regression model and it was then validated by an external dataset GSE125779, which contained 8 FSGS samples and 8 healthy subjects. Cell-type identification by estimating relative subsets of RNA transcripts (CIBERSORT) was used to calculate the immune infiltration of FSGS samples. RESULTS We acquired 179 DEGs, 79 genes with downregulated expression (44.1%) and 100 genes with upregulated expression (55.9%), in the FSGS samples. The DEGs were significantly associated with arteriosclerosis, kidney disease and arteriosclerotic cardiovascular disease. GSEA revealed that these gene sets were significantly enriched in allograft rejection signaling pathways and activation of immune response in biological processes. Fifteen genes were demonstrated to be hub genes by PPI, and three submodules were screened by MCODE linked with FSGS. Analysis by machine learning methodologies identified nuclear receptor subfamily 4 group A member 1 (NR4A1) and dual specificity phosphatase 1 (DUSP1) as sensitive tubular renal biomarkers in the diagnosis of FSGS, and they were selected as hub genes, as well as hub nodes which were enriched in the MAPK signaling pathway. Immune cell infiltration analysis revealed that the genetic biomarkers were both correlated with activated mast cells, which may amplify FSGS biological processes. CONCLUSION DUSP1 and NR4A1 were identified as sensitive potential biomarkers in the diagnosis of FSGS. Activated mast cells have a decisive effect on the occurrence and development of FSGS through tubular lesions and tubulointerstitial inflammation, and they are expected to become therapeutic targets in FSGS.
Collapse
Affiliation(s)
- JunYuan Bai
- Medical College of Integrated Chinese and Western Medicine, GanSu University of Traditional Chinese Medicine, GanSu, China
| | - XiaoWei Pu
- Medical College of Integrated Chinese and Western Medicine, GanSu University of Traditional Chinese Medicine, GanSu, China
| | - YunXia Zhang
- Medical College of Integrated Chinese and Western Medicine, GanSu University of Traditional Chinese Medicine, GanSu, China
| | - Enlai Dai
- Department of Anesthesiology and Surgery, GanSu University of Traditional Chinese Medicine, Gansu, China
| |
Collapse
|
8
|
Wang S, Zuo A, Jiang W, Xie J, Lin H, Sun W, Zhao M, Xia J, Shao J, Zhao X, Liang D, Yang A, Sun J, Wang M. JMJD1A/NR4A1 Signaling Regulates the Procession of Renal Tubular Epithelial Interstitial Fibrosis Induced by AGEs in HK-2. Front Med (Lausanne) 2022; 8:807694. [PMID: 35186975 PMCID: PMC8850412 DOI: 10.3389/fmed.2021.807694] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/14/2021] [Indexed: 12/14/2022] Open
Abstract
Diabetic kidney disease (DKD) is one of the most serious complications of diabetic patients. Advanced glycation end products (AGEs) induce epithelial-mesenchymal transformation (EMT) of renal tubular epithelial cells (HK-2), resulting in renal tubulointerstitial fibrosis. However, the underlying epigenetic mechanisms remain to be further investigated. In this work, we investigated the functional role of JMJD1A involved in DKD progression. The molecular mechanism study was performed in AGEs-induced HK-2 cells by gene expression analysis, RNA sequencing (RNA-seq), and JMJD1A lentiviral knockdown and overexpression particle transfection. The results showed that AGEs could upregulate JMJD1A, and the expressions of related fibrotic factor were also increased. At the same time, in the DKD animal model induced by unilateral nephrectomy plus streptozotocin (STZ), IHC immunohistochemical staining showed that compared with the control group, the expressions of JMJD1A, FN, and COL1 in the model group were all increased, masson staining results also show that the model group has typical fibrotic changes. This is consistent with the results of our in vitro experiments. In order to determine the downstream pathway, we screened out JMJD1A downstream transcription factors by RNA-seq. Further analysis showed that JMJD1A overexpression could accelerate the progression of AGEs-induced renal fibrosis by reducing the expression of NR4A1 in HK-2 cells. Meanwhile, NR4A1 inhibitor can promote the expression of fibrosis-related factors such as VIM, a-SMA in HK-2 cells, and aggravate the process of fibrosis. Taken together, JMJD1A/NR4A1 signaling can regulate the procession of renal tubular epithelial interstitial fibrosis induced by AGEs in HK-2.
Collapse
Affiliation(s)
- Shaoting Wang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Anna Zuo
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Weiqiang Jiang
- Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jiarun Xie
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Haoyu Lin
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Wei Sun
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Min Zhao
- Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jinjin Xia
- Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Junqiao Shao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Xiaoshan Zhao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Donghui Liang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
- Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Aicheng Yang
- The Affiliated Jiangmen Traditional Chinese Medicine Hospital, Jinan University, Guangzhou, China
- Aicheng Yang
| | - Jia Sun
- Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Jia Sun
| | - Ming Wang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
- Zhujiang Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Ming Wang
| |
Collapse
|
9
|
Gokula V, Terrero D, Joe B. Six Decades of History of Hypertension Research at the University of Toledo: Highlighting Pioneering Contributions in Biochemistry, Genetics, and Host-Microbiota Interactions. Curr Hypertens Rep 2022; 24:669-685. [PMID: 36301488 PMCID: PMC9708772 DOI: 10.1007/s11906-022-01226-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2022] [Indexed: 01/31/2023]
Abstract
PURPOSE OF REVIEW The study aims to capture the history and lineage of hypertension researchers from the University of Toledo in Ohio and showcase their collective scientific contributions dating from their initial discoveries of the physiology of adrenal and renal systems and genetics regulating blood pressure (BP) to its more contemporary contributions including microbiota and metabolomic links to BP regulation. RECENT FINDINGS The University of Toledo College of Medicine and Life Sciences (UTCOMLS), previously known as the Medical College of Ohio, has contributed significantly to our understanding of the etiology of hypertension. Two of the scientists, Patrick Mulrow and John Rapp from UTCOMLS, have been recognized with the highest honor, the Excellence in Hypertension award from the American Heart Association for their pioneering work on the physiology and genetics of hypertension, respectively. More recently, Bina Joe has continued their legacy in the basic sciences by uncovering previously unknown novel links between microbiota and metabolites to the etiology of hypertension, work that has been recognized by the American Heart Association with multiple awards. On the clinical research front, Christopher Cooper and colleagues lead the CORAL trials and contributed importantly to the investigations on renal artery stenosis treatment paradigms. Hypertension research at this institution has not only provided these pioneering insights, but also grown careers of scientists as leaders in academia as University Presidents and Deans of Medical Schools. Through the last decade, the university has expanded its commitment to Hypertension research as evident through the development of the Center for Hypertension and Precision Medicine led by Bina Joe as its founding Director. Hypertension being the top risk factor for cardiovascular diseases, which is the leading cause of human mortality, is an important area of research in multiple international universities. The UTCOMLS is one such university which, for the last 6 decades, has made significant contributions to our current understanding of hypertension. This review is a synthesis of this rich history. Additionally, it also serves as a collection of audio archives by more recent faculty who are also prominent leaders in the field of hypertension research, including John Rapp, Bina Joe, and Christopher Cooper, which are cataloged at Interviews .
Collapse
Affiliation(s)
- Veda Gokula
- grid.267337.40000 0001 2184 944XCenter for Hypertension and Precision Medicine, Department of Physiology and Pharmacology, College of Medicine and Life Sciences, University of Toledo College of Medicine and Life Sciences, Block Health Science Building, 3000 Arlington Ave, Toledo, OH 43614-2598 USA
| | - David Terrero
- grid.267337.40000 0001 2184 944XDepartment of Pharmacology and Experimental Therapeutics, College of Pharmacy, University of Toledo, Toledo, OH USA
| | - Bina Joe
- grid.267337.40000 0001 2184 944XCenter for Hypertension and Precision Medicine, Department of Physiology and Pharmacology, College of Medicine and Life Sciences, University of Toledo College of Medicine and Life Sciences, Block Health Science Building, 3000 Arlington Ave, Toledo, OH 43614-2598 USA
| |
Collapse
|
10
|
Role of NR4A family members in myeloid cells and leukemia. CURRENT RESEARCH IN IMMUNOLOGY 2022; 3:23-36. [PMID: 35496823 PMCID: PMC9040138 DOI: 10.1016/j.crimmu.2022.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 02/01/2022] [Accepted: 02/10/2022] [Indexed: 11/24/2022] Open
Abstract
The myeloid cellular compartment comprises monocytes, dendritic cells (DCs), macrophages and granulocytes. As diverse as this group of cells may be, they are all an important part of the innate immune system and are therefore linked by the necessity to be acutely sensitive to their environment and to rapidly and appropriately respond to any changes that may occur. The nuclear orphan receptors NR4A1, NR4A2 and NR4A3 are encoded by immediate early genes as their expression is rapidly induced in response to various signals. It is perhaps because of this characteristic that this family of transcription factors has many known roles in myeloid cells. In this review, we will regroup and discuss the diverse roles NR4As have in different myeloid cell subsets, including in differentiation, migration, activation, and metabolism. We will also highlight the importance these molecules have in the development of myeloid leukemia. NR4A1-3 have important roles in the different cells of the myeloid compartment. These orphan receptors homeostasis, differentiation, and activation. NR4A family is important in suppressing the development of myeloid leukemias. NR4As have been linked to several diseases and could be pharmacological targets.
Collapse
|
11
|
Pulakazhi Venu VK, Alston L, Iftinca M, Tsai YC, Stephens M, Warriyar K V V, Rehal S, Hudson G, Szczepanski H, von der Weid PY, Altier C, Hirota SA. Nr4A1 modulates inflammation-associated intestinal fibrosis and dampens fibrogenic signaling in myofibroblasts. Am J Physiol Gastrointest Liver Physiol 2021; 321:G280-G297. [PMID: 34288735 DOI: 10.1152/ajpgi.00338.2019] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Intestinal fibrosis is a common complication of the inflammatory bowel diseases (IBDs), contributing to tissue stiffening and luminal narrowing. Human nuclear receptor 4A 1 (NR4A1) was previously reported to regulate mesenchymal cell function and dampen fibrogenic signaling. NR4A1 gene variants are associated with IBD risk, and it has been shown to regulate intestinal inflammation. Here, we tested the hypothesis that NR4A1 acts as a negative regulator of intestinal fibrosis through regulating myofibroblast function. Using the SAMP1/YitFc mouse, we tested whether two pharmacological agents known to enhance NR4A1 signaling, cytosporone B (Csn-B) or 6-mercaptopurine (6-MP), could reduce fibrosis. We also used the dextran sulfate sodium (DSS) model of colitis and assessed the magnitude of colonic fibrosis in mouse nuclear receptor 4A 1 (Nr4a1-/-) and their wild-type littermates (Nr4a1+/+). Lastly, intestinal myofibroblasts isolated from Nr4a1-/- and Nr4a1+/+ mice or primary human intestinal myofibroblasts were stimulated with transforming growth factor-β1 (TGF-β1), in the presence or absence of Csn-B or 6-MP, and proliferation and ECM gene expression assessed. Csn-B or 6-MP treatment significantly reduced ileal thickness, collagen, and overall ECM content in SAMP1/YitFc mice. This was associated with a reduction in proliferative markers within the mesenchymal compartment. Nr4a1-/- mice exposed to DSS exhibited increased colonic thickening and ECM content. Nr4a1-/- myofibroblasts displayed enhanced TGF-β1-induced proliferation. Furthermore, Csn-B or 6-MP treatment was antiproliferative in Nr4a1+/+ but not Nr4a1-/- cells. Lastly, activating NR4A1 in human myofibroblasts reduced TGF-β1-induced collagen deposition and fibrosis-related gene expression. Our data suggest that NR4A1 can attenuate fibrotic processes in intestinal myofibroblasts and could provide a valuable clinical target to treat inflammation-associated intestinal fibrosis.NEW & NOTEWORTHY Fibrosis and increased muscle thickening contribute to stricture formation and intestinal obstruction, a complication that occurs in 30%-50% of patients with CD within 10 yr of disease onset. More than 50% of those who undergo surgery to remove the obstructed bowel will experience stricture recurrence. To date, there are no drug-based approaches approved to treat intestinal strictures. In the current submission, we identify NR4A1 as a novel target to treat inflammation-associated intestinal fibrosis.
Collapse
Affiliation(s)
- Vivek Krishna Pulakazhi Venu
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada
| | - Laurie Alston
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada
| | - Mircea Iftinca
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada
| | - Yi-Cheng Tsai
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada
| | - Matthew Stephens
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada
| | - Vineetha Warriyar K V
- Faculty of Kinesiology, Sport Injury Prevention Research Centre, University of Calgary, Calgary, Alberta, Canada
| | - Sonia Rehal
- Department of Advanced Diagnostics, University Health Network, Toronto, Ontario, Canada
| | - Grace Hudson
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada
| | - Holly Szczepanski
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada
| | - Pierre-Yves von der Weid
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada
| | - Christophe Altier
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| | - Simon A Hirota
- Department of Physiology & Pharmacology, University of Calgary, Calgary, Alberta, Canada.,Department of Immunology, Microbiology & Infectious Diseases, University of Calgary, Calgary, Alberta, Canada.,Snyder Institute for Chronic Disease, University of Calgary, Calgary, Alberta, Canada.,Alberta Children's Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
| |
Collapse
|
12
|
Cobb MB, Wu W, Attipoe EM, Johnson AC, Garrett MR. Nephron-deficient HSRA rats exhibit renal injury with age but have limited renal damage from streptozotocin-induced hyperglycemia. Am J Physiol Renal Physiol 2021; 320:F1093-F1105. [PMID: 33843272 PMCID: PMC8285653 DOI: 10.1152/ajprenal.00487.2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 04/05/2021] [Accepted: 04/05/2021] [Indexed: 01/13/2023] Open
Abstract
Hypertension and diabetes are the greatest factors influencing the progression of chronic kidney disease (CKD). Investigation into the role of nephron number in CKD alone or with hypertension has revealed a strong inverse relationship between the two; however, not much is known about the connection between nephron number and diabetic kidney disease. The heterogeneous stock-derived model of unilateral renal agenesis (HSRA) rat, a novel model of nephron deficiency, provides a unique opportunity to study the association between nephron number and hypertension and diabetes on CKD. HSRA rats exhibit failure of one kidney to develop in 50-75% of offspring, whereas the remaining offspring are born with two kidneys. Rats born with one kidney (HSRA-S) develop significant renal injury with age compared with two-kidney littermates (HSRA-C). The induction of hypertension as a secondary stressor leads to significantly more renal injury in HSRA-S compared with HSRA-C rats and nephrectomized HSRA-C (HSRA-UNX) rats. The present study sought to address the hypothesis that nephron deficiency in the HSRA rat would hasten renal injury in the presence of a secondary stressor of hyperglycemia. HSRA animals did not exhibit diabetes-related traits at any age; thus, streptozotocin (STZ) was used to induce hyperglycemia in HSRA-S, HSRA-C, and HSRA-UNX rats. STZ- and vehicle-treated animals were followed for 15 wk. STZ-treated animals developed robust hyperglycemia, but in contrast to the response to hypertension, neither HSRA-S nor HSRA-UNX animals developed proteinuria compared with vehicle treatment. In total, our data indicate that hyperglycemia from STZ alone does not have a significant impact on the onset or progression of injury in young one-kidney HSRA animals.NEW & NOTEWORTHY The HSRA rat, a novel model of nephron deficiency, provides a unique opportunity to study the association between nephron number and confounding cardiovascular complications that impact kidney health. Although hypertension was previously shown to exacerbate renal injury in young HSRA animals, diabetic hyperglycemia did not lead to worse renal injury, suggesting that nephron number has limited impact on kidney injury, at least in this model.
Collapse
Affiliation(s)
- Meredith B Cobb
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Wenjie Wu
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Esinam M Attipoe
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Ashley C Johnson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Michael R Garrett
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
- Department of Medicine (Nephrology), University of Mississippi Medical Center, Jackson, Mississippi
- Department of Pediatrics (Genetics), University of Mississippi Medical Center, Jackson, Mississippi
| |
Collapse
|
13
|
Keele GR, Prokop JW, He H, Holl K, Littrell J, Deal AW, Kim Y, Kyle PB, Attipoe E, Johnson AC, Uhl KL, Sirpilla OL, Jahanbakhsh S, Robinson M, Levy S, Valdar W, Garrett MR, Solberg Woods LC. Sept8/SEPTIN8 involvement in cellular structure and kidney damage is identified by genetic mapping and a novel human tubule hypoxic model. Sci Rep 2021; 11:2071. [PMID: 33483609 PMCID: PMC7822875 DOI: 10.1038/s41598-021-81550-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 01/05/2021] [Indexed: 01/29/2023] Open
Abstract
Chronic kidney disease (CKD), which can ultimately progress to kidney failure, is influenced by genetics and the environment. Genes identified in human genome wide association studies (GWAS) explain only a small proportion of the heritable variation and lack functional validation, indicating the need for additional model systems. Outbred heterogeneous stock (HS) rats have been used for genetic fine-mapping of complex traits, but have not previously been used for CKD traits. We performed GWAS for urinary protein excretion (UPE) and CKD related serum biochemistries in 245 male HS rats. Quantitative trait loci (QTL) were identified using a linear mixed effect model that tested for association with imputed genotypes. Candidate genes were identified using bioinformatics tools and targeted RNAseq followed by testing in a novel in vitro model of human tubule, hypoxia-induced damage. We identified two QTL for UPE and five for serum biochemistries. Protein modeling identified a missense variant within Septin 8 (Sept8) as a candidate for UPE. Sept8/SEPTIN8 expression increased in HS rats with elevated UPE and tubulointerstitial injury and in the in vitro hypoxia model. SEPTIN8 is detected within proximal tubule cells in human kidney samples and localizes with acetyl-alpha tubulin in the culture system. After hypoxia, SEPTIN8 staining becomes diffuse and appears to relocalize with actin. These data suggest a role of SEPTIN8 in cellular organization and structure in response to environmental stress. This study demonstrates that integration of a rat genetic model with an environmentally induced tubule damage system identifies Sept8/SEPTIN8 and informs novel aspects of the complex gene by environmental interactions contributing to CKD risk.
Collapse
Affiliation(s)
| | - Jeremy W Prokop
- HudsonAlpha Institute, Huntsville, AL, USA
- Department of Pediatrics and Human Development, Department of Pharmacology, Michigan State University, Grand Rapids, MI, USA
| | - Hong He
- Departments of Pediatrics and Physiology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Katie Holl
- Departments of Pediatrics and Physiology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - John Littrell
- Departments of Pediatrics and Physiology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Aaron W Deal
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Yunjung Kim
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Patrick B Kyle
- Department of Pharmacology, Medicine (Nephrology), Pediatrics (Genetics), University of Mississippi Medical Center, Jackson, MS, USA
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Esinam Attipoe
- Department of Pharmacology, Medicine (Nephrology), Pediatrics (Genetics), University of Mississippi Medical Center, Jackson, MS, USA
| | - Ashley C Johnson
- Department of Pharmacology, Medicine (Nephrology), Pediatrics (Genetics), University of Mississippi Medical Center, Jackson, MS, USA
| | - Katie L Uhl
- Department of Pediatrics and Human Development, Department of Pharmacology, Michigan State University, Grand Rapids, MI, USA
| | - Olivia L Sirpilla
- Department of Pediatrics and Human Development, Department of Pharmacology, Michigan State University, Grand Rapids, MI, USA
| | - Seyedehameneh Jahanbakhsh
- Department of Pediatrics and Human Development, Department of Pharmacology, Michigan State University, Grand Rapids, MI, USA
| | | | - Shawn Levy
- HudsonAlpha Institute, Huntsville, AL, USA
| | - William Valdar
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Michael R Garrett
- Department of Pharmacology, Medicine (Nephrology), Pediatrics (Genetics), University of Mississippi Medical Center, Jackson, MS, USA
| | - Leah C Solberg Woods
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA.
| |
Collapse
|
14
|
Ko SF, Yip HK, Zhen YY, Hung CC, Lee CC, Huang CC, Ng SH, Chen YL, Lin JW. Renal Damages in Deoxycorticosterone Acetate-Salt Hypertensive Rats: Assessment with Diffusion Tensor Imaging and T2-mapping. Mol Imaging Biol 2021; 22:94-104. [PMID: 31065896 DOI: 10.1007/s11307-019-01364-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE This study aimed to investigate the feasibility of diffusion tensor imaging (DTI) and T2-mapping to assess temporal renal damage in deoxycorticosterone acetate-salt (DOCA-salt) hypertensive rats and compare the results with histopathologic and immunohistochemical findings. PROCEDURES After baseline renal magnetic resonance imaging (MRI), 24 out of 30 uninephrectomized Sprague-Dawley rats with DOCA-salt-induced hypertension were divided equally into four groups. Group 1 had renal MRI at weeks 2, 4, 6, and 8, and groups 2, 3, and 4 had MRI at weeks 2, 4, and 6, respectively. The remaining 6 rats were used as sham controls. The renal cortex and outer and inner stripes of the outer medulla were examined over time using fractional anisotropy (FA), apparent diffusion coefficient (ADC), and T2-mapping, and the results were compared with baseline values. The degree of glomerular and tubular injury, endothelial cell thickening, hyaline arteriolosclerosis, macrophage infiltration, microcyst formation, and fibrosis in different zones at different time points in the DOCA-salt rats were compared with controls. RESULTS Compared with baseline values, DOCA-salt rats demonstrated a significant decrease in renal cortical FA from week 4 to week 8 (0.244 ± 0.015 vs 0.172 ± 0.014-0.150 ± 0.016, P = 0.018-0.002), corresponding to significantly more glomerular damage, arteriolosclerosis, macrophage infiltration, and fibrosis. The DOCA-salt rats had significantly increased cortical ADC and T2 values at weeks 6 and 8 (1.778 ± 0.051 × 10-3 mm2/s vs 1.872 ± 0.058-1.917 ± 0.066 × 10-3 mm2/s; 93.7 ± 4.9 ms vs 98.0 ± 2.9-100.7 ± 4.0 ms, respectively, all P < 0.05), consistent with excessively fluid-filled microcysts (aquaporin-2+). Despite DOCA-salt rats harbored markedly increased fibrosis in outer and inner stripes of the outer medulla at weeks 6 and 8, only nonsignificant decreases in FA were observed in comparison with the controls suggesting that only limited microstructural changes were present. CONCLUSIONS Renal cortical FA is useful for the early detection and monitoring of renal damage in DOCA-salt hypertensive rats.
Collapse
Affiliation(s)
- Sheung-Fat Ko
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung District, Kaohsiung, 833, Taiwan.
| | - Hon-Kan Yip
- Department of Cardiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.,Center for Translational Researches in Biomedical Sciences, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yen-Yi Zhen
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chi-Chih Hung
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chen-Chang Lee
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung District, Kaohsiung, 833, Taiwan
| | - Chung-Cheng Huang
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung District, Kaohsiung, 833, Taiwan
| | - Shu-Hang Ng
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung District, Kaohsiung, 833, Taiwan
| | - Yi-Ling Chen
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, 123 Ta-Pei Road, Niao-Sung District, Kaohsiung, 833, Taiwan.,Center for Translational Researches in Biomedical Sciences, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Jui-Wei Lin
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| |
Collapse
|
15
|
Szpirer C. Rat models of human diseases and related phenotypes: a systematic inventory of the causative genes. J Biomed Sci 2020; 27:84. [PMID: 32741357 PMCID: PMC7395987 DOI: 10.1186/s12929-020-00673-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 07/09/2020] [Indexed: 12/13/2022] Open
Abstract
The laboratory rat has been used for a long time as the model of choice in several biomedical disciplines. Numerous inbred strains have been isolated, displaying a wide range of phenotypes and providing many models of human traits and diseases. Rat genome mapping and genomics was considerably developed in the last decades. The availability of these resources has stimulated numerous studies aimed at discovering causal disease genes by positional identification. Numerous rat genes have now been identified that underlie monogenic or complex diseases and remarkably, these results have been translated to the human in a significant proportion of cases, leading to the identification of novel human disease susceptibility genes, helping in studying the mechanisms underlying the pathological abnormalities and also suggesting new therapeutic approaches. In addition, reverse genetic tools have been developed. Several genome-editing methods were introduced to generate targeted mutations in genes the function of which could be clarified in this manner [generally these are knockout mutations]. Furthermore, even when the human gene causing a disease had been identified without resorting to a rat model, mutated rat strains (in particular KO strains) were created to analyze the gene function and the disease pathogenesis. Today, over 350 rat genes have been identified as underlying diseases or playing a key role in critical biological processes that are altered in diseases, thereby providing a rich resource of disease models. This article is an update of the progress made in this research and provides the reader with an inventory of these disease genes, a significant number of which have similar effects in rat and humans.
Collapse
Affiliation(s)
- Claude Szpirer
- Université Libre de Bruxelles, B-6041, Gosselies, Belgium.
- , Waterloo, Belgium.
| |
Collapse
|
16
|
Shi W, Dong J, Liang Y, Liu K, Peng Y. NR4A1 silencing protects against renal ischemia-reperfusion injury through activation of the β-catenin signaling pathway in old mice. Exp Mol Pathol 2019; 111:104303. [PMID: 31465766 DOI: 10.1016/j.yexmp.2019.104303] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/28/2019] [Accepted: 08/25/2019] [Indexed: 10/26/2022]
Abstract
Renal ischemia-reperfusion injury (IRI), a major cause of acute kidney injury as well as a contributor to a rapid kidney dysfunction and high mortality rates, is a complex yet not fully understood process. Investigation on the underlying molecular mechanism including the inflammation initiation and progression can help to have a better understanding of the disease, and thereby lead to a potential therapeutic approach. We established renal IRI mouse model groups differing in their ages. These renal IRI mice were treated either only with si-nuclear receptor subfamily 4, group A, member 1 (NR4A1) or together with si-β-catenin by tail vein injection to analyze the role of NR4A1 and β-catenin in the development of renal IRI. Serum creatinine (SCr) and blood urea nitrogen (BUN) levels were examined for renal function analysis. Levels of the apoptosis markers B-cell lymphoma-2 (Bcl-2), Bcl-2 associated protein X (Bax), and cleaved caspase-3 were determined. NR4A1 gene was up-regulated in the renal tissues of all mice with IRI, which showed a much higher level in the old mice with IRI. si-NR4A1 treatment resulted in reduced SCr and BUN levels and a decrease of cell apoptosis, indicated by lower expression of Bax and cleaved Caspase-3, while in contrast increased levels of Bcl-2 were detected. Interestingly, also the β-catenin level was increased by knockdown of NR4A1. Furthermore, si-β-catenin reversed the effect of knockdown of NR4A1, leading to aggravated renal function damage, severe pathological injury and increased apoptosis. Thus, silencing NR4A1 ameliorates renal IRI via β-catenin signaling pathway activation. Down-regulated NR4A1 confirms renoprotective properties against renal IRI via the activation of β-catenin signaling pathway in old mice.
Collapse
Affiliation(s)
- Wenjian Shi
- Department of Nephrology, The Second Xiangya Hospital, Renal Research Institute of Central South University, Key Lab of Kidney Disease and Blood Purification in Hunan, Changsha 410011, PR China
| | - Jing Dong
- Intensive Care Unit, Hunan Cancer Hospital, Changsha 410006, PR China
| | - Yumei Liang
- Department of Nephrology, The Hunan Provincial People's Hospital, Changsha 410002, PR China
| | - Kanghan Liu
- Department of Nephrology, The Hunan Provincial People's Hospital, Changsha 410002, PR China
| | - Youming Peng
- Department of Nephrology, The Second Xiangya Hospital, Renal Research Institute of Central South University, Key Lab of Kidney Disease and Blood Purification in Hunan, Changsha 410011, PR China.
| |
Collapse
|
17
|
Screening and Bioinformatics Analysis of IgA Nephropathy Gene Based on GEO Databases. BIOMED RESEARCH INTERNATIONAL 2019; 2019:8794013. [PMID: 31392215 PMCID: PMC6662497 DOI: 10.1155/2019/8794013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 04/14/2019] [Accepted: 05/30/2019] [Indexed: 12/16/2022]
Abstract
Purpose To identify novel biomarkers of IgA nephropathy (IgAN) through bioinformatics analysis and elucidate the possible molecular mechanism. Methods The GSE93798 and GSE73953 datasets containing microarray data from IgAN patients and healthy controls were downloaded from the GEO database and analyzed by the GEO2R web tool to obtain different expressed genes (DEGs). Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis, protein-protein interaction (PPI), and Biological Networks Gene Oncology tool (BiNGO) were then performed to elucidate the molecular mechanism of IgAN. Results A total of 223 DEGs were identified, of which 21 were hub genes, and involved in inflammatory response, cellular response to lipopolysaccharide, transcription factor activity, extracellular exosome, TNF signaling pathway, and MAPK signaling pathway. Conclusions TNF and MAPK pathways likely form the basis of IgAN progression, and JUN/JUNB, FOS, NR4A1/2, EGR1, and FOSL1/2 are novel prognostic biomarkers of IgAN.
Collapse
|
18
|
Kuriakose J, Redecke V, Guy C, Zhou J, Wu R, Ippagunta SK, Tillman H, Walker PD, Vogel P, Häcker H. Patrolling monocytes promote the pathogenesis of early lupus-like glomerulonephritis. J Clin Invest 2019; 129:2251-2265. [PMID: 31033479 DOI: 10.1172/jci125116] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 03/12/2019] [Indexed: 12/24/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a complex autoimmune disease with genetic and environmental contributions. Hallmarks of the disease are the appearance of immune complexes (IC) containing autoreactive Abs and TLR-activating nucleic acids, whose deposition in kidney glomeruli is suspected to promote tissue injury and glomerulonephritis (GN). Here, using a mouse model based on the human SLE susceptibility locus TNFAIP3-interacting protein 1 (TNIP1, also known as ABIN1), we investigated the pathogenesis of GN. We found that GN was driven by TLRs but, remarkably, proceeded independently of ICs. Rather, disease in 3 different mouse models and patients with SLE was characterized by glomerular accumulation of patrolling monocytes (PMos), a cell type with an emerging key function in vascular inflammation. Consistent with such function in GN, monocyte-specific deletion of ABIN1 promoted kidney disease, whereas selective elimination of PMos provided protection. In contrast to GN, PMo elimination did not protect from reduced survival or disease symptoms such as IC generation and splenomegaly, suggesting that GN and other inflammatory processes are governed by distinct pathogenic mechanisms. These data identify TLR-activated PMos as the principal component of an intravascular process that contributes to glomerular inflammation and kidney injury.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Heather Tillman
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | | | - Peter Vogel
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | | |
Collapse
|
19
|
Rouillard C, Baillargeon J, Paquet B, St-Hilaire M, Maheux J, Lévesque C, Darlix N, Majeur S, Lévesque D. Genetic disruption of the nuclear receptor Nur77 (Nr4a1) in rat reduces dopamine cell loss and l-Dopa-induced dyskinesia in experimental Parkinson's disease. Exp Neurol 2018. [DOI: 10.1016/j.expneurol.2018.03.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
20
|
Turner PA, Garrett MR, Didion SP, Janorkar AV. Spheroid Culture System Confers Differentiated Transcriptome Profile and Functional Advantage to 3T3-L1 Adipocytes. Ann Biomed Eng 2018; 46:772-787. [PMID: 29500565 DOI: 10.1007/s10439-018-1993-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 02/05/2018] [Indexed: 12/21/2022]
Abstract
This study highlights functional differences between 2-D monolayer and 3-D spheroid 3T3-L1 adipocyte culture models and explores the underlying genomic mechanisms responsible for the different phenotypes present. The spheroids showed higher triglyceride accumulation than the monolayer culture and further increase with larger spheroid size. Whole transcriptome analysis indicated significant differential expression of genes related to adipogenesis, including adipocytokine signaling, fatty acid metabolism, and PPAR-γ signaling. Spheroids also showed downregulation of matrix metalloproteinases (MMPs), integrin, actin-cytoskeleton associated genes, and Rho/GTPase3 expression relative to 2-D monolayer, indicating suppression of the Rho-ROCK pathway and thereby promoting adipogenic differentiation. When exposed to linoleic acid (500 μM) and TNF-α (125 ng/mL) to promote chronic adiposity, linoleic acid treatment resulted in increased intracellular triglycerides and subsequent TNF-α treatment resulted in significantly altered adipocytokine signaling, fatty acid metabolism, and PPAR signaling, in addition to upregulation of multiple MMPs in spheroids vs. monolayer. Overall, 3-D spheroids showed enhanced adipogenic phenotype as indicated by triglyceride synthesis and transcriptome changes while retaining sensitivity to a pro-inflammatory stimulus. The 3-D spheroid culture thus may provide a simple, convenient, and sensitive in vitro model to study adipocyte response to metabolic stresses relevant to clinical pathologies.
Collapse
Affiliation(s)
- Paul A Turner
- Department of Biomedical Materials Science, School of Dentistry, University of Mississippi Medical Center, Jackson, MS, USA
| | - Michael R Garrett
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - Sean P Didion
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - Amol V Janorkar
- Department of Biomedical Materials Science, School of Dentistry, University of Mississippi Medical Center, Jackson, MS, USA.
| |
Collapse
|
21
|
Spann RA, Lawson WJ, Bidwell GL, Zamarripa CA, Maranon RO, Bandyopadhyay S, Taylor ER, Reckelhoff JF, Garrett MR, Grayson BE. Rodent vertical sleeve gastrectomy alters maternal immune health and fetoplacental development. Clin Sci (Lond) 2018; 132:295-312. [PMID: 29167317 PMCID: PMC5989318 DOI: 10.1042/cs20171416] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/10/2017] [Accepted: 11/21/2017] [Indexed: 12/23/2022]
Abstract
Bariatric surgery is increasingly employed to improve fertility and reduce obesity-related co-morbidities in obese women. Surgical weight loss not only improves the chance of conception but reduces the risk of pregnancy complications including pre-eclampsia, gestational diabetes, and macrosomia. However, bariatric procedures increase the incidence of intrauterine growth restriction (IUGR), fetal demise, thromboembolism, and other gestational disorders. Using our rodent model of vertical sleeve gastrectomy (VSG), we tested the hypothesis that VSG in diet-induced, obese dams would cause immune and placental structural abnormalities that may be responsible for fetal demise during pregnancy. VSG dams studied on gestational day (G) 19 had reduced circulating T-cell (CD3+ and CD8+) populations compared with lean or obese controls. Further, local interleukin (IL) 1β and IL 1 receptor antagonist (il1rn) cmRNA were increased in placenta of VSG dams. Placental barrier function was also affected, with increased transplacental permeability to small molecules, increased matrix metalloproteinase 9 expression, and increased apoptosis in VSG. Furthermore, we identified increased placental mTOR signaling that may contribute to preserving the body weight of the fetuses during gestation. These changes occurred in the absence of a macronutrient deficit or gestational hypertension in the VSG dams. In summary, previous VSG in dams may contribute to fetal demise by affecting maternal immune system activity and compromise placental integrity.
Collapse
Affiliation(s)
- Redin A Spann
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - William J Lawson
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - Gene L Bidwell
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - C Austin Zamarripa
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - Rodrigo O Maranon
- Department of Nephrology, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - Sibali Bandyopadhyay
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - Erin R Taylor
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - Jane F Reckelhoff
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - Michael R Garrett
- Department of Pharmacology, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A.
- Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Mississippi Center for Obesity Research, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| | - Bernadette E Grayson
- Department of Neurobiology and Anatomical Sciences, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A.
- Women's Health Research Center, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Mississippi Center of Excellence in Perinatal Research, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
- Mississippi Center for Obesity Research, University of Mississippi Medical Center, Jackson, MS 39216, U.S.A
| |
Collapse
|
22
|
Yang H, Huo P, Hu G, Wei B, Kong D, Li H. Identification of gene markers associated with metastasis in clear cell renal cell carcinoma. Oncol Lett 2017; 13:4755-4761. [PMID: 28599476 PMCID: PMC5453167 DOI: 10.3892/ol.2017.6084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 01/31/2017] [Indexed: 12/22/2022] Open
Abstract
The present study aimed to screen potential target genes for the early diagnosis and treatment of early metastatic clear cell renal cell carcinoma (ccRCC) using the microarray data of early metastatic and non-metastatic ccRCC samples. The DNA microarray dataset GSE47352 was downloaded from Gene Expression Omnibus and included 4 early metastatic and 5 non-metastatic ccRCC samples. Differentially expressed genes (DEGs) were screened using the limma package. Then, pheatmap package was used to conduct two-way clustering for the DEGs. Subsequently, MAPPFinder and GenMAPP were employed separately to perform functional and pathway enrichment analysis for the DEGs. Additionally, a protein-protein interaction (PPI) network was constructed using Cytoscape, and small drug molecules were searched using Connectivity map (cmap). In total, 196 upregulated and 163 downregulated genes were identified. DEGs, including JUN, tumor necrosis factor (TNF), Ras homolog family member B (RHOB) and transforming growth factor β2 (TGFβ2) were significantly enriched in the signaling pathway of renal cell carcinoma. Furthermore, nuclear receptor subfamily 4 group A member 1 (NR4A1) was significantly enriched in the mitogen-activated protein kinase signaling pathway; in addition, laminin subunit α (LAMA) 1, LAMA2 and LAMA4 were significantly enriched in extracellular matrix-receptor interaction. JUN (degree=6) had the highest degree in the PPI network. Thapsigargin (score=−0.913) possessed the highest performance in terms of the treatment of early metastatic ccRCC. In the present study, it was discovered that certain DEGs, including JUN, TNF, RHOB, NR4A1, TGFβ2, LAMA1, LAMA2 and LAMA4 were potential target genes associated with early metastatic ccRCC. In addition, thapsigargin could be used as an efficient small drug molecule for the treatment of early metastatic ccRCC.
Collapse
Affiliation(s)
- Hailing Yang
- Emergency Department, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China
| | - Pengfei Huo
- Intensive Care Unit, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China
| | - Guozhang Hu
- Emergency Department, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China
| | - Bo Wei
- Department of Neurosurgery, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China
| | - Dalian Kong
- Department of Orthopedics, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China
| | - Hongjun Li
- Health Examination Center, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China
| |
Collapse
|
23
|
Wang X, Johnson AC, Sasser JM, Williams JM, Solberg Woods LC, Garrett MR. Spontaneous one-kidney rats are more susceptible to develop hypertension by DOCA-NaCl and subsequent kidney injury compared with uninephrectomized rats. Am J Physiol Renal Physiol 2016; 310:F1054-64. [PMID: 26936874 PMCID: PMC5002061 DOI: 10.1152/ajprenal.00555.2015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 02/25/2016] [Indexed: 12/12/2022] Open
Abstract
There is little clinical data of how hypertension may influence individuals with nephron deficiency in the context of being born with a single kidney. We recently developed a new rat model (the heterogeneous stock-derived model of unilateral renal agenesis rat) that is born with a single kidney and exhibits progressive kidney injury and decline in kidney function with age. We hypothesized that DOCA-salt would induce a greater increase in blood pressure and therefore accelerate the progression of kidney injury in rats born with a solitary kidney compared with rats that have undergone unilateral nephrectomy. Time course evaluation of blood pressure, kidney injury, and renal hemodynamics was performed in the following six groups of animals from weeks 13 to 18: 1) DOCA-treated rats with a solitary kidney (DOCA+S group), 2) placebo-treated rats with a solitary kidney, 3) DOCA-treated control rats with two kidneys (DOCA+C group), 4) placebo-treated control rats with two kidneys, 5) DOCA-treated rats with two kidneys that underwent uninephrectomy (DOCA+UNX8 group), and 6) placebo-treated rats with two kidneys that underwent uninephrectomy. DOCA+S rats demonstrated a significant rise (P < 0.05) in blood pressure (192 ± 4 mmHg), proteinuria (205 ± 31 mg/24 h), and a decline in glomerular filtration rate (600 ± 42 μl·min(-1)·g kidney weight(-1)) relative to the DOCA+UNX8 (173 ± 3 mmHg, 76 ± 26 mg/24 h, and 963 ± 36 μl·min(-1)·g kidney weight(-1)) and DOCA+C (154 ± 2 mmHg, 7 ± 1 mg/24 h, and 1,484 ± 121 μl·min(-1)·g kidney weight(-1)) groups. Placebo-treated groups showed no significant change among the three groups. An assessment of renal injury markers via real-time PCR/Western blot analysis and histological analysis was concordant with the measured physiological parameters. In summary, congenital solitary kidney rats are highly susceptible to the induction of hypertension compared with uninephrectomized rats, suggesting that low nephron endowment is an important driver of elevated blood pressure, hastening nephron injury through the transmission of elevated systemic blood pressure and thereby accelerating decline in kidney function.
Collapse
Affiliation(s)
- Xuexiang Wang
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Ashley C Johnson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Jennifer M Sasser
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Jan M Williams
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | | | - Michael R Garrett
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi; Department of Medicine (Nephrology), University of Mississippi Medical Center, Jackson, Mississippi; and
| |
Collapse
|
24
|
Wang WN, Zhang WL, Zhou GY, Ma FZ, Sun T, Su SS, Xu ZG. Prediction of the molecular mechanisms and potential therapeutic targets for diabetic nephropathy by bioinformatics methods. Int J Mol Med 2016; 37:1181-8. [PMID: 26986014 PMCID: PMC4829133 DOI: 10.3892/ijmm.2016.2527] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 02/26/2016] [Indexed: 01/22/2023] Open
Abstract
In this study, we aimed to explore the molecular mechanisms of and genetic factors influencing diabetic nephropathy (DN). Gene expression profiles associated with DN were obtained from the GEO database (Accession no. GSE20844). The differentially expressed genes (DEGs) between diabetic mice and non-diabetic mice were screened. Subsequently, the DEGs were subjected to functional and pathway analysis. The protein-protein interaction (PPI) network was constructed and the transcription factors (TFs) were screened among the DEGs. A total of 92 upregulated and 118 downregulated genes were screened. Pathway analysis revealed that the p53 signaling pathway, the transforming growth factor (TGF)-β signaling pathway and the mitogen-activated protein kinase (MAPK) signaling pathway were significantly enriched by upregulated genes. Serpine1 (also known as plasminogen activator inhibitor-1), early growth response 1 (Egr1) and Mdk were found to be significant nodes in the PPI network by three methods. A total of 12 TFs were found to be differentially expressed, of which nuclear receptor subfamily 4, group A, member 1 (Nr4a1) and peroxisome proliferator-activated receptor gamma (Pparg) were found to have multiple interactions with other DEGs. We demonstrated that the p53 signaling pathway, the TGF-β signaling pathway and the MAPK signaling pathway were dysregulated in the diabetic mice. The significant nodes (Serpine1, Egr1 and Mdk) and differentially expressed TFs (Nr4a1 and Pparg) may provide a novel avenue for the targeted therapy of DN.
Collapse
Affiliation(s)
- Wan-Ning Wang
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Wen-Long Zhang
- Department of Hematology and Oncology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Guang-Yu Zhou
- Department of Nephrology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Fu-Zhe Ma
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Tao Sun
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Sen-Sen Su
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| | - Zhong-Gao Xu
- Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China
| |
Collapse
|
25
|
Hamers AAJ, Argmann C, Moerland PD, Koenis DS, Marinković G, Sokolović M, de Vos AF, de Vries CJM, van Tiel CM. Nur77-deficiency in bone marrow-derived macrophages modulates inflammatory responses, extracellular matrix homeostasis, phagocytosis and tolerance. BMC Genomics 2016; 17:162. [PMID: 26932821 PMCID: PMC4774191 DOI: 10.1186/s12864-016-2469-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 02/12/2016] [Indexed: 02/08/2023] Open
Abstract
Background The nuclear orphan receptor Nur77 (NR4A1, TR3, or NGFI-B) has been shown to modulate the inflammatory response of macrophages. To further elucidate the role of Nur77 in macrophage physiology, we compared the transcriptome of bone marrow-derived macrophages (BMM) from wild-type (WT) and Nur77-knockout (KO) mice. Results In line with previous observations, SDF-1α (CXCL12) was among the most upregulated genes in Nur77-deficient BMM and we demonstrated that Nur77 binds directly to the SDF-1α promoter, resulting in inhibition of SDF-1α expression. The cytokine receptor CX3CR1 was strongly downregulated in Nur77-KO BMM, implying involvement of Nur77 in macrophage tolerance. Ingenuity pathway analyses (IPA) to identify canonical pathways regulation and gene set enrichment analyses (GSEA) revealed a potential role for Nur77 in extracellular matrix homeostasis. Nur77-deficiency increased the collagen content of macrophage extracellular matrix through enhanced expression of several collagen subtypes and diminished matrix metalloproteinase (MMP)-9 activity. IPA upstream regulator analyses discerned the small GTPase Rac1 as a novel regulator of Nur77-mediated gene expression. We identified an inhibitory feedback loop with increased Rac1 activity in Nur77-KO BMM, which may explain the augmented phagocytic activity of these cells. Finally, we predict multiple chronic inflammatory diseases to be influenced by macrophage Nur77 expression. GSEA and IPA associated Nur77 to osteoarthritis, chronic obstructive pulmonary disease, rheumatoid arthritis, psoriasis, and allergic airway inflammatory diseases. Conclusions Altogether these data identify Nur77 as a modulator of macrophage function and an interesting target to treat chronic inflammatory disease. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-2469-9) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Anouk A J Hamers
- Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. .,Present address: Department of Inflammation Biology, La Jolla Institute for Allergy and Immunology, San Diego, USA.
| | - Carmen Argmann
- Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. .,Present address: Institute for Genomics and Multiscale Biology Mount Sinai Hospital, New York, USA.
| | - Perry D Moerland
- Bioinformatics Laboratory, Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Duco S Koenis
- Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Goran Marinković
- Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Milka Sokolović
- Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. .,Present address: European Food Information Council, Brussels, Belgium.
| | - Alex F de Vos
- Center for Experimental and Molecular Medicine, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Carlie J M de Vries
- Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| | - Claudia M van Tiel
- Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
| |
Collapse
|
26
|
Jia Z, Johnson AC, Wang X, Guo Z, Dreisbach AW, Lewin JR, Kyle PB, Garrett MR. Allelic Variants in Arhgef11 via the Rho-Rock Pathway Are Linked to Epithelial-Mesenchymal Transition and Contributes to Kidney Injury in the Dahl Salt-Sensitive Rat. PLoS One 2015; 10:e0132553. [PMID: 26172442 PMCID: PMC4501567 DOI: 10.1371/journal.pone.0132553] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 06/17/2015] [Indexed: 12/21/2022] Open
Abstract
Previously, genetic analyses identified that variants in Arhgef11 may influence kidney injury in the Dahl salt-sensitive (S) rat, a model of hypertensive chronic kidney disease. To understand the potential mechanism by which altered expression and/or protein differences in Arhgef11 could play a role in kidney injury, stably transduced Arhgef11 knockdown cell lines as well as primary cultures of proximal tubule cells were studied. Genetic knockdown of Arhgef11 in HEK293 and NRK resulted in reduced RhoA activity, decreased activation of Rho-ROCK pathway, and less stress fiber formation versus control, similar to what was observed by pharmacological inhibition (fasudil). Primary proximal tubule cells (PTC) cultured from the S exhibited increased expression of Arhgef11, increased RhoA activity, and up regulation of Rho-ROCK signaling compared to control (small congenic). The cells were also more prone (versus control) to TGFβ-1 induced epithelial-mesenchymal transition (EMT), a hallmark feature of the development of renal interstitial fibrosis, and characterized by development of spindle shape morphology, gene expression changes in EMT markers (Col1a3, Mmp9, Bmp7, and Ocln) and increased expression of N-Cadherin and Vimentin. S derived PTC demonstrated a decreased ability to uptake FITC-albumin compared to the small congenic in vitro, which was confirmed by assessment of albumin re-uptake in vivo by infusion of FITC-albumin and immunofluorescence imaging. In summary, these studies suggest that genetic variants in the S form of Arhgef11 via increased expression and/or protein activity play a role in promoting kidney injury in the S rat through changes in cell morphology (Rho-Rock and/or EMT) that impact the function of tubule cells.
Collapse
Affiliation(s)
- Zhen Jia
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, United States of America
| | - Ashley C. Johnson
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, United States of America
| | - Xuexiang Wang
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, United States of America
| | - Zibiao Guo
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, United States of America
- Molecular and Genomics Core Facility, University of Mississippi Medical Center, Jackson, MS, United States of America
| | - Albert W. Dreisbach
- Department of Medicine (Nephrology), University of Mississippi Medical Center, Jackson, MS, United States of America
| | - Jack R. Lewin
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, United States of America
| | - Patrick B. Kyle
- Department of Pathology, University of Mississippi Medical Center, Jackson, MS, United States of America
| | - Michael R. Garrett
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, United States of America
- Department of Medicine (Nephrology), University of Mississippi Medical Center, Jackson, MS, United States of America
- * E-mail:
| |
Collapse
|
27
|
Lobert S, Graichen ME, Hamilton RD, Pitman KT, Garrett MR, Hicks C, Koganti T. Prognostic biomarkers for HNSCC using quantitative real-time PCR and microarray analysis: β-tubulin isotypes and the p53 interactome. Cytoskeleton (Hoboken) 2014; 71:628-37. [PMID: 25355403 DOI: 10.1002/cm.21195] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 10/18/2014] [Accepted: 10/22/2014] [Indexed: 12/29/2022]
Abstract
In 2014, more than 40,000 people in the United States will be diagnosed with head and neck squamous cell cancer (HNSCC) and nearly 8400 people will die of the disease (www.cancer.org/acs/groups). Little is known regarding molecular targets that might lead to better therapies and improved outcomes for these patients. The incorporation of taxanes into the standard cisplatin/5-fluouracil initial chemotherapy for HNSCC has been associated with improved response rate and survival. Taxanes target the β-subunit of the tubulin heterodimers, the major protein in microtubules, and halt cell division at G2/M phase. Both laboratory and clinical research suggest a link between β-tubulin expression and cancer patient survival, indicating that patterns of expression for β-tubulin isotypes along with activity of tumor suppressors such as p53 or micro-RNAs could be useful prognostic biomarkers and could suggest therapeutic targets. © 2014 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Sharon Lobert
- School of Nursing, University of Mississippi Medical Center, Jackson, Mississippi
| | | | | | | | | | | | | |
Collapse
|
28
|
Wang X, Johnson AC, Williams JM, White T, Chade AR, Zhang J, Liu R, Roman RJ, Lee JW, Kyle PB, Solberg-Woods L, Garrett MR. Nephron Deficiency and Predisposition to Renal Injury in a Novel One-Kidney Genetic Model. J Am Soc Nephrol 2014; 26:1634-46. [PMID: 25349207 DOI: 10.1681/asn.2014040328] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 09/08/2014] [Indexed: 11/03/2022] Open
Abstract
Some studies have reported up to 40% of patients born with a single kidney develop hypertension, proteinuria, and in some cases renal failure. The increased susceptibility to renal injury may be due, in part, to reduced nephron numbers. Notably, children who undergo nephrectomy or adults who serve as kidney donors exhibit little difference in renal function compared with persons who have two kidneys. However, the difference in risk between being born with a single kidney versus being born with two kidneys and then undergoing nephrectomy are unclear. Animal models used previously to investigate this question are not ideal because they require invasive methods to model congenital solitary kidney. In this study, we describe a new genetic animal model, the heterogeneous stock-derived model of unilateral renal agenesis (HSRA) rat, which demonstrates 50%-75% spontaneous incidence of a single kidney. The HSRA model is characterized by reduced nephron number (more than would be expected by loss of one kidney), early kidney/glomerular hypertrophy, and progressive renal injury, which culminates in reduced renal function. Long-term studies of temporal relationships among BP, renal hemodynamics, and renal function demonstrate that spontaneous single-kidney HSRA rats are more likely than uninephrectomized normal littermates to exhibit renal impairment because of the combination of reduced nephron numbers and prolonged exposure to renal compensatory mechanisms (i.e., hyperfiltration). Future studies with this novel animal model may provide additional insight into the genetic contributions to kidney development and agenesis and the factors influencing susceptibility to renal injury in individuals with congenital solitary kidney.
Collapse
Affiliation(s)
| | | | - Jan M Williams
- Departments of *Pharmacology and Toxicology, Medicine (Nephrology)
| | | | - Alejandro R Chade
- Physiology and Biophysics, Radiology, University of Mississippi Medical Center, Jackson, Mississippi; and
| | | | | | - Richard J Roman
- Departments of *Pharmacology and Toxicology, Medicine (Nephrology)
| | | | | | - Leah Solberg-Woods
- Department of Pediatrics, Medical College of Wisconsin, Madison, Wisconsin
| | | |
Collapse
|