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Golledge J, Lu HS, Shah S. Proprotein convertase subtilisin/kexin type 9 as a drug target for abdominal aortic aneurysm. Curr Opin Lipidol 2024; 35:241-247. [PMID: 39052843 PMCID: PMC11387138 DOI: 10.1097/mol.0000000000000945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
PURPOSE OF REVIEW There are no current drug therapies to limit abdominal aortic aneurysm (AAA) growth. This review summarizes evidence suggesting that inhibiting proprotein convertase subtilisin/kexin type 9 (PCSK9) may be a drug target to limit AAA growth. RECENT FINDINGS Mendelian randomization studies suggest that raised LDL and non-HDL-cholesterol are causal in AAA formation. PCSK9 was reported to be upregulated in human AAA samples compared to aortic samples from organ donors. PCSK9 gain of function viral vectors promoted aortic expansion in C57BL/6 mice infused with angiotensin II. The effect of altering PCSK9 expression in the aortic perfusion elastase model was reported to be inconsistent. Mutations in the gene encoding PCSK9, which increase serum cholesterol, were associated with increased risk of human AAA. Patients with AAA also have a high risk of cardiovascular death, myocardial infarction and stroke. Recent research suggests that PCSK9 inhibition would substantially reduce the risk of these events. SUMMARY Past research suggests that drugs that inhibit PCSK9 have potential as a novel therapy for AAA to both limit aneurysm growth and reduce risk of cardiovascular events. A large multinational randomized controlled trial is needed to test if PCSK9 inhibition limits AAA growth and cardiovascular events.
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Affiliation(s)
- Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University
- The Department of Vascular and Endovascular Surgery, The Townsville Hospital
- Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
| | - Hong S Lu
- Saha Cardiovascular Research Center and Saha Aortic Center
- Department of Physiology, University of Kentucky, Lexington, Kentucky, USA
| | - Sonia Shah
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland, Australia
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Hu P, Du Y, Xu Y, Ye P, Xia J. The role of transcription factors in the pathogenesis and therapeutic targeting of vascular diseases. Front Cardiovasc Med 2024; 11:1384294. [PMID: 38745757 PMCID: PMC11091331 DOI: 10.3389/fcvm.2024.1384294] [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] [Received: 02/12/2024] [Accepted: 04/16/2024] [Indexed: 05/16/2024] Open
Abstract
Transcription factors (TFs) constitute an essential component of epigenetic regulation. They contribute to the progression of vascular diseases by regulating epigenetic gene expression in several vascular diseases. Recently, numerous regulatory mechanisms related to vascular pathology, ranging from general TFs that are continuously activated to histiocyte-specific TFs that are activated under specific circumstances, have been studied. TFs participate in the progression of vascular-related diseases by epigenetically regulating vascular endothelial cells (VECs) and vascular smooth muscle cells (VSMCs). The Krüppel-like family (KLF) TF family is widely recognized as the foremost regulator of vascular diseases. KLF11 prevents aneurysm progression by inhibiting the apoptosis of VSMCs and enhancing their contractile function. The presence of KLF4, another crucial member, suppresses the progression of atherosclerosis (AS) and pulmonary hypertension by attenuating the formation of VSMCs-derived foam cells, ameliorating endothelial dysfunction, and inducing vasodilatory effects. However, the mechanism underlying the regulation of the progression of vascular-related diseases by TFs has remained elusive. The present study categorized the TFs involved in vascular diseases and their regulatory mechanisms to shed light on the potential pathogenesis of vascular diseases, and provide novel insights into their diagnosis and treatment.
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Affiliation(s)
- Poyi Hu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yifan Du
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Xu
- Institute of Reproduction Health Research, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ping Ye
- Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, China
| | - Jiahong Xia
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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3
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Allen KN, Torres-Velarde JM, Vazquez JM, Moreno-Santillán DD, Sudmant PH, Vázquez-Medina JP. Hypoxia exposure blunts angiogenic signaling and upregulates the antioxidant system in endothelial cells derived from elephant seals. BMC Biol 2024; 22:91. [PMID: 38654271 PMCID: PMC11040891 DOI: 10.1186/s12915-024-01892-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 04/17/2024] [Indexed: 04/25/2024] Open
Abstract
BACKGROUND Elephant seals exhibit extreme hypoxemic tolerance derived from repetitive hypoxia/reoxygenation episodes they experience during diving bouts. Real-time assessment of the molecular changes underlying protection against hypoxic injury in seals remains restricted by their at-sea inaccessibility. Hence, we developed a proliferative arterial endothelial cell culture model from elephant seals and used RNA-seq, functional assays, and confocal microscopy to assess the molecular response to prolonged hypoxia. RESULTS Seal and human endothelial cells exposed to 1% O2 for up to 6 h respond differently to acute and prolonged hypoxia. Seal cells decouple stabilization of the hypoxia-sensitive transcriptional regulator HIF-1α from angiogenic signaling. Rapid upregulation of genes involved in glutathione (GSH) metabolism supports the maintenance of GSH pools, and intracellular succinate increases in seal but not human cells. High maximal and spare respiratory capacity in seal cells after hypoxia exposure occurs in concert with increasing mitochondrial branch length and independent from major changes in extracellular acidification rate, suggesting that seal cells recover oxidative metabolism without significant glycolytic dependency after hypoxia exposure. CONCLUSIONS We found that the glutathione antioxidant system is upregulated in seal endothelial cells during hypoxia, while this system remains static in comparable human cells. Furthermore, we found that in contrast to human cells, hypoxia exposure rapidly activates HIF-1 in seal cells, but this response is decoupled from the canonical angiogenesis pathway. These results highlight the unique mechanisms that confer extraordinary tolerance to limited oxygen availability in a champion diving mammal.
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Affiliation(s)
- Kaitlin N Allen
- Department of Integrative Biology, University of California Berkeley, Berkeley, CA, 94720, USA
| | | | - Juan Manuel Vazquez
- Department of Integrative Biology, University of California Berkeley, Berkeley, CA, 94720, USA
| | | | - Peter H Sudmant
- Department of Integrative Biology, University of California Berkeley, Berkeley, CA, 94720, USA
- Center for Computational Biology, University of California Berkeley, Berkeley, CA, 94720, USA
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席 进, 张 敏, 张 永, 张 晨, 张 雨, 王 锐, 申 林, 李 静, 宋 雪. [Upregulating KLF11 ameliorates intestinal inflammation in mice with 2, 4, 6-trinitrobenesulfonic acid-induced colitis by inhibiting the JAK2/STAT3 signaling pathway]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2024; 44:765-772. [PMID: 38708511 PMCID: PMC11073944 DOI: 10.12122/j.issn.1673-4254.2024.04.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Indexed: 05/07/2024]
Abstract
OBJECTIVE To investigate the expression level of Kruppel-like transcription factor family member KLF11 in intestinal mucosal tissues of Crohn's disease (CD) and its regulatory effect on intestinal inflammation in CD-like colitis. METHODS We examined KLF11 expression levels in diseased and normal colon mucosal tissues from 12 CD patients and 12 patients with colorectal cancer using immunofluorescence staining. KLF11 expression was also detected in the colon mucosal tissues of a mouse model of 2, 4, 6-trinitrobenesulfonic acid (TNBS)-induced colitis. A recombinant adenoviral vector was used to upregulate KLF11 expression in the mouse models and the changes in intestinal inflammation was observed. A Caco-2 cell model with stable KLF11 overexpression was constructed by lentiviral infection. The effect of KLF11 overexpression on expressions of JAK2/STAT3 signaling pathway proteins was investigated using immunoblotting in both the mouse and cell models. The mouse models were treated with coumermycin A1, a JAK2/STAT3 signaling pathway agonist, and the changes in intestinal inflammatory responses were observed. RESULTS The expression level of KLF11 was significantly lowered in both the clinical specimens of diseased colon mucosal tissues and the colon tissues of mice with TNBS-induced colitis (P < 0.05). Adenovirus-mediated upregulation of KLF11 significantly improved intestinal inflammation and reduced the expression levels of inflammatory factors in the intestinal mucosa of the colitis mouse models (P < 0.05). Overexpression of KLF11 significantly inhibited the expression levels of p-JAK2 and p-STAT3 in intestinal mucosal tissues of the mouse models and in Caco-2 cells (P < 0.05). Treatment with coumermycin A1 obviously inhibited the effect of KLF11 upregulation for improving colitis and significantly increased the expression levels of inflammatory factors in the intestinal mucosa of the mouse models (P < 0.05). CONCLUSION KLF11 is downregulated in the intestinal mucosa in CD, and upregulation of KLF11 can improve intestinal inflammation and reduce the production of inflammatory factors probably by inhibiting the JAK2/STAT3 signaling pathway.
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Affiliation(s)
- 进 席
- 蚌埠医科大学,安徽 蚌埠 233000Bengbu Medical University, Bengbu 233000, China
| | - 敏 张
- 蚌埠医科大学,安徽 蚌埠 233000Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院检验科,安徽 蚌埠 233000Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 永玉 张
- 蚌埠医科大学,安徽 蚌埠 233000Bengbu Medical University, Bengbu 233000, China
| | - 晨 张
- 蚌埠医科大学,安徽 蚌埠 233000Bengbu Medical University, Bengbu 233000, China
| | - 雨路 张
- 蚌埠医科大学,安徽 蚌埠 233000Bengbu Medical University, Bengbu 233000, China
| | - 锐 王
- 蚌埠医科大学,安徽 蚌埠 233000Bengbu Medical University, Bengbu 233000, China
| | - 林 申
- 蚌埠医科大学,安徽 蚌埠 233000Bengbu Medical University, Bengbu 233000, China
| | - 静 李
- 蚌埠医科大学第一附属医院检验科,安徽 蚌埠 233000Clinical Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233000Anhui Province Key Laboratory of Basic and Translational Research of inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - 雪 宋
- 蚌埠医科大学第一附属医院中心实验室,安徽 蚌埠 233000Central Laboratory, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学第一附属医院炎症相关性疾病基础与转化研究安徽省重点实验室,安徽 蚌埠 233000Anhui Province Key Laboratory of Basic and Translational Research of inflammation-related Diseases, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
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Yan K, Bian J, He L, Song B, Shen L, Zhen Y. Effects of KLF11 on Vascular Smooth Muscle Cells and its Underlying Mechanisms in Intracranial Aneurysm. Biochem Genet 2024:10.1007/s10528-024-10681-0. [PMID: 38368567 DOI: 10.1007/s10528-024-10681-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 01/02/2024] [Indexed: 02/19/2024]
Abstract
Vascular smooth muscle cells (VSMCs) affect the phenotypic changes in intracranial aneurysm (IA). They exhibit enhanced dissociation and migration and play a key role in IA pathogenesis. KLF transcription factor 11 (KLF11), a member of the KLF family, significantly affects the cancer cell proliferation, differentiation, and apoptosis. However, its expression, biological functions, and latent action mechanisms in IA remain unclear. This study aimed to analyze the effects of KLF11 on H2O2-induced human brain VSMCs (HBVSMCs) in IA. We determined the mRNA levels of KLF11 in 15 paired arterial wall tissues of patients with IA and healthy volunteers. HBVSMCs were stimulated with H2O2 for 6 h to establish an IA model in vitro. Cell viability, apoptosis, and inflammatory cytokine (interleukin [IL-1β, tumor necrosis factor-α, and IL-6) levels were assessed using the 3-(4,5-dimethylthiazol-2-yl)-2-5-diphenyltetrazolium bromide, flow cytometry, and enzyme-linked immunosorbent assays, respectively. KLF11 expression was determined via quantitative reverse transcription-polymerase chain reaction, western blotting, and immunofluorescence analyses. Furthermore, p-p38, p38, cleaved-caspase 3, and caspase 3 levels were determined via western blotting. KLF11 levels were downregulated in the arterial wall tissues of patients with IA than in those of the control group. KLF11 upregulation by KLF11-plasmid promoted the cell viability, reduced apoptosis, decreased cleaved-caspase 3 expression, and inhibited the secretion of inflammatory factors in H2O2-induced HBVSMCs. KLF11-plasmid remarkably reduced p-p38 expression and p-p38/p-38 ratio; however, these effects were reversed by P79350 treatment. Overall, KLF11 upregulation improved the HBVSMC functions and exerted protective effects against IA, suggesting its potential for IA treatment.
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Affiliation(s)
- Ke Yan
- Department of Neurosurgery, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, No. 98 Nantong West Road, Yangzhou, 225001, China
| | - Jiarong Bian
- Department of Respiratory Medicine, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, Yangzhou, 225001, China
| | - Liang He
- Department of Neurosurgery, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, No. 98 Nantong West Road, Yangzhou, 225001, China
| | - Bingwei Song
- Department of Neurosurgery, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, No. 98 Nantong West Road, Yangzhou, 225001, China
| | - Linhai Shen
- Department of Neurosurgery, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, No. 98 Nantong West Road, Yangzhou, 225001, China
| | - Yong Zhen
- Department of Neurosurgery, Clinical Medical College of Yangzhou University, Northern Jiangsu People's Hospital, No. 98 Nantong West Road, Yangzhou, 225001, China.
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Zhou ZQ, Lv X, Liu SB, Qu HC, Xie QP, Sun LF, Li G. The induction of ferroptosis by KLF11/NCOA4 axis: the inhibitory role in clear cell renal cell carcinoma. Hum Cell 2023; 36:2162-2178. [PMID: 37642832 DOI: 10.1007/s13577-023-00973-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
Ferroptosis is a form of cell death and has great potential application in the treatment of many cancers, including clear cell renal cell carcinoma (ccRCC). Herein, we identified the essential roles of Krüppel-like factor 11 (KLF11) in suppressing the progression of ccRCC. By analyzing mRNA expression data from the Gene Expression Omnibus (GEO) database, we found that KLF11 was a significantly downregulated gene in ccRCC tissues. The results of subsequent functional assays verified that KLF11 played an antiproliferative role in ccRCC cells and xenograft tumors. Furthermore, gene set enrichment analysis indicated that ferroptosis was involved in ccRCC development, and correlation analysis revealed that KLF11 was positively related to ferroptosis drivers. We also found that KLF11 promoted ferroptosis in ccRCC by downregulating the protein expression of ferritin, system xc (-) cystine/glutamate antiporter (xCT), and glutathione peroxidase 4 (GPX4), acting as the inhibitory factors of ferroptosis and increasing the intracellular levels of lipid reactive oxygen species (ROS). As a transcriptional regulator, KLF11 significantly increased the promoter activity of nuclear receptor coactivator 4 (NCOA4), a gene significantly downregulated in ccRCC and whose low expression is associated with poor survival. The characteristics of ccRCC cells caused by KLF11 overexpression were reversed after NCOA4 silencing. In summary, the present study suggests that KLF11 suppresses the progression of ccRCC by increasing NCOA4 transcription. Therefore, the KLF11/NCOA4 axis may serve as a novel therapeutic target for human ccRCC.
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Affiliation(s)
- Zi-Qi Zhou
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Xi Lv
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Shi-Bo Liu
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Hong-Chen Qu
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Qing-Peng Xie
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China
| | - Long-Feng Sun
- Department of Geriatric Cardiology, The First Hospital of China Medical University, No. 155, Nanjing North Street, Shenyang, Liaoning Province, China.
| | - Gang Li
- Department of Urology,, Cancer Hospital of China Medical University (Liaoning Cancer Hospital and Institute), No. 44, Xiaoheyan Road, Dadong District, Shenyang, Liaoning Province, China.
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Hasan M, Al-Thani H, El-Menyar A, Zeidan A, Al-Thani A, Yalcin HC. Disturbed hemodynamics and oxidative stress interaction in endothelial dysfunction and AAA progression: Focus on Nrf2 pathway. Int J Cardiol 2023; 389:131238. [PMID: 37536420 DOI: 10.1016/j.ijcard.2023.131238] [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: 02/03/2023] [Revised: 04/30/2023] [Accepted: 07/31/2023] [Indexed: 08/05/2023]
Abstract
Hemodynamic shear stress is one of the major factors that are involved in the pathogenesis of many cardiovascular diseases including atherosclerosis and abdominal aortic aneurysm (AAA), through its modulatory effect on the endothelial cell's redox homeostasis and mechanosensitive gene expression. Among important mechanisms, oxidative stress, endoplasmic reticulum stress activation, and the subsequent endothelial dysfunction are attributed to disturbed blood flow and low shear stress in the vascular curvature and bifurcations which are considered atheroprone regions and aneurysm occurrence spots. Many pathways were shown to be involved in AAA progression. Of particular interest from recent findings is, the (Nrf2)/Keap-1 pathway, where Nrf2 is a transcription factor that has antioxidant properties and is strongly associated with several CVDs, yet, the exact mechanism by which Nrf2 alleviates CVDs still to be elucidated. Nrf2 expression is closely affected by shear stress and was shown to participate in AAA. In the current review paper, we discussed the link between disturbed hemodynamics and its effect on Nrf2 as a mechanosensitive gene and its role in the development of endothelial dysfunction which is linked to the progression of AAA.
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Affiliation(s)
- Maram Hasan
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Hassan Al-Thani
- Department of Surgery, Trauma and Vascular Surgery, Hamad General Hospital, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Ayman El-Menyar
- Department of Surgery, Trauma and Vascular Surgery, Hamad General Hospital, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar; Clinical Medicine, Weill Cornell Medical College, Doha, Qatar
| | - Asad Zeidan
- Department of Basic Sciences, College of Medicine, QU health, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Asmaa Al-Thani
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar; Department of Biomedical Science, College of Health Sciences, QU Health, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Huseyin C Yalcin
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar.
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Allen KN, Torres-Velarde JM, Vazquez JM, Moreno-Santillan DD, Sudmant PH, Vázquez-Medina JP. Hypoxia blunts angiogenic signaling and upregulates the antioxidant system in elephant seal endothelial cells. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.01.547248. [PMID: 37461722 PMCID: PMC10350019 DOI: 10.1101/2023.07.01.547248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
Elephant seals experience extreme hypoxemia during diving bouts. Similar depletions in oxygen availability characterize pathologies including myocardial infarction and ischemic stroke in humans, but seals manage these repeated episodes without injury. However, the real-time assessment of the molecular changes underlying protection against hypoxic injury in seals remains restricted by their at-sea inaccessibility. Hence, we developed a proliferative arterial endothelial cell culture system to assess the molecular response to prolonged hypoxia. Seal and human cells exposed to 1% O 2 for up to 6 h demonstrated differential responses to both acute and prolonged hypoxia. Seal cells decouple stabilization of the hypoxia-sensitive transcriptional regulator HIF-1α from angiogenic signaling at both the transcriptional and cellular level. Rapid upregulation of genes involved in the glutathione (GSH) metabolism pathway supported maintenance of GSH pools and increases in intracellular succinate in seal but not human cells during hypoxia exposure. High maximal and spare respiratory capacity in seal cells after hypoxia exposure occurred in concert with increasing mitochondrial branch length and independent from major changes in extracellular acidification rate, suggesting seal cells recover oxidative metabolism without significant glycolytic dependency after hypoxia exposure. In sum, our studies show that in contrast to human cells, seal cells adapt to hypoxia exposure by dampening angiogenic signaling, increasing antioxidant protection, and maintaining mitochondrial morphological integrity and function.
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Wang Z, Zhao X, Zhao G, Guo Y, Lu H, Mu W, Zhong J, Garcia-Barrio M, Zhang J, Chen YE, Chang L. PRDM16 deficiency in vascular smooth muscle cells aggravates abdominal aortic aneurysm. JCI Insight 2023; 8:e167041. [PMID: 37079380 PMCID: PMC10393233 DOI: 10.1172/jci.insight.167041] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 04/19/2023] [Indexed: 04/21/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is usually asymptomatic until life-threatening complications occur, predominantly involving aortic rupture. Currently, no drug-based treatments are available, primarily due to limited understanding of AAA pathogenesis. The transcriptional regulator PR domain-containing protein 16 (PRDM16) is highly expressed in the aorta, but its functions in the aorta are largely unknown. By RNA-seq analysis, we found that vascular smooth muscle cell-specific (VSMC-specific) Prdm16-knockout (Prdm16SMKO) mice already showed extensive changes in the expression of genes associated with extracellular matrix (ECM) remodeling and inflammation in the abdominal aorta under normal housing conditions without any pathological stimuli. Human AAA lesions displayed lower PRDM16 expression. Periadventitial elastase application to the suprarenal region of the abdominal aorta aggravated AAA formation in Prdm16SMKO mice. During AAA development, VSMCs undergo apoptosis because of both intrinsic and environmental changes, including inflammation and ECM remodeling. Prdm16 deficiency promoted inflammation and apoptosis in VSMCs. A disintegrin and metalloproteinase 12 (ADAM12) is a gelatinase that can degrade various ECMs. We found that ADAM12 is a target of transcriptional repression by PRDM16. Adam12 knockdown reversed VSMC apoptosis induced by Prdm16 deficiency. Our study demonstrated that PRDM16 deficiency in VSMCs promoted ADAM12 expression and aggravates AAA formation, which may provide potential targets for AAA treatment.
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Affiliation(s)
- Zhenguo Wang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Xiangjie Zhao
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
- Key Laboratory of Animal Cellular and Genetics, Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, P.R. China
| | - Guizhen Zhao
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Yanhong Guo
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Haocheng Lu
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
- Department of Pharmacology, Southern University of Science and Technology, Shenzhen, P.R. China
| | - Wenjuan Mu
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Juan Zhong
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Minerva Garcia-Barrio
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Jifeng Zhang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Y. Eugene Chen
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Lin Chang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA
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Zhao G, Liang J, Shan G, Gu J, Xu F, Lu C, Ma T, Bi G, Zhan C, Ge D. KLF11 regulates lung adenocarcinoma ferroptosis and chemosensitivity by suppressing GPX4. Commun Biol 2023; 6:570. [PMID: 37248295 DOI: 10.1038/s42003-023-04959-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/20/2023] [Indexed: 05/31/2023] Open
Abstract
Ferroptosis, an iron-dependent non-apoptotic cell death, has been shown to play a vital role in tumor proliferation and chemotherapy resistance. Here, we report that KLF11 inhibits lung adenocarcinoma (LUAD) cell proliferation and promotes chemotherapy sensitivity by participating in the GPX4-related ferroptosis pathway. Through an RNA-sequence screen from LUAD cells pretreatment with ferroptosis inducers (FINs), we discovered that KLF11 expression was significantly higher in FINs-treated cells, suggesting that KLF11 may be involved in ferroptosis. Overexpression of KLF11 promoted LUAD cells to undergo ferroptosis alterations. Meanwhile, upregulation of KLF11 expression also inhibited cell proliferation and increased chemosensitivity, whereas knockout of KLF11 did the opposite. With ChIP-Seq and RNA-Seq, we identified GPX4 as a downstream target of KLF11. Through ChIP-qPCR and dual luciferase assay, we clarified that KLF11 binds to the promoter region of GPX4 and represses its transcription. Restored GPX4 expression antagonized the ability of KLF11 to promote ferroptosis, increase chemotherapy sensitivity and inhibit cell proliferation in vitro and in vivo. Clinically, KLF11 declined in LUAD and its low expression was associated with reduced patient survival. Our findings established the function of KLF11 to promote ferroptosis in LUAD, thereby inhibiting cell proliferation and enhancing the efficacy of chemotherapy.
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Affiliation(s)
- Guangyin Zhao
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiaqi Liang
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Guangyao Shan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jie Gu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Fengkai Xu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Chunlai Lu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Teng Ma
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Guoshu Bi
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cheng Zhan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Di Ge
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.
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11
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Ling X, Wang Q, Zhang J, Zhang G. Genome-Wide Analysis of the KLF Gene Family in Chicken: Characterization and Expression Profile. Animals (Basel) 2023; 13:ani13091429. [PMID: 37174466 PMCID: PMC10177326 DOI: 10.3390/ani13091429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/08/2023] [Accepted: 04/20/2023] [Indexed: 05/15/2023] Open
Abstract
The kruppel-like factor (KLF) gene family is a group of transcription factors containing highly conserved zinc-finger motifs, which play a crucial role in cell proliferation and differentiation. Chicken has been widely used as a model animal for analyzing gene function, however, little is known about the function of the KLF gene family in chickens. In this study, we performed genome-wide studies of chicken KLF genes and analyzed their biological and expression characteristics. We identified 13 KLF genes from chickens. Our phylogenetic, motif, and conserved domain analyses indicate that the KLF gene family has remained conserved through evolution. Synteny analysis showed the collinear relationship among KLFs, which indicated that they had related biomolecular functions. Interaction network analysis revealed that KLFs worked with 20 genes in biological processes. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that KLF2 was involved in Apelin and Forkhead Box O (FOXO) signaling pathways. Moreover, qPCR showed that 13 KLF genes were expressed in the nine selected tissues and displayed various gene expression patterns in chickens. RNA-seq showed that KLF3 and KLF10 genes were differentially expressed in the normal and high-fat diet fed groups, and KLF4, KLF5, KLF6, KLF7, KLF9, KLF12, and KLF13 genes were differentially expressed between undifferentiated and differentiated chicken preadipocytes. Besides, RNA-seq also showed that KLF genes displayed different expression patterns in muscle at 11 and 16 embryonic days old, and in 1-day-old chickens. These results indicated that the KLF genes were involved in the development of muscle and fat in chickens. Our findings provide some valuable reference points for the subsequent study of the function of KLF genes.
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Affiliation(s)
- Xuanze Ling
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225000, China
| | - Qifan Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225000, China
| | - Jin Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225000, China
| | - Genxi Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, China
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, Yangzhou University, Yangzhou 225000, China
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12
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Abstract
ABSTRACT The incidence of abdominal aortic aneurysm (AAA) in the elderly is increasing year by year with high mortality. Current treatment is mainly through surgery or endovascular intervention, which is not sufficient to reduce future risk. Therefore, we still need to find an effective conservative measure as an adjunct therapy or early intervention to prevent AAA progression. Traditional therapeutic agents, such as β-receptor blockers, calcium channel blockers, and statins, have been shown to have limited effects on the growth of AAA. Recently, sodium-glucose cotransport proteins inhibitors (SGLT2is), a new class hypoglycemic drug, have shown outstanding beneficiary effects on cardiovascular diseases by plasma volume reduction, vascular tone regulation, and various unidentified mechanisms. It has been demonstrated that SGLT2i is abundantly expressed in the aorta, and some studies also showed promising results of SGLT2i in treating animal AAA models. This article aims to summarize the recent progress of AAA studies and look forward to the application of SGLT2i in AAA treatment for early intervention or adjunct therapy after surgical repair or stent graft.
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Affiliation(s)
- Zhongtiao Jin
- Master of Medicine, Department of Endocrinology, Renmin Hospital of Wuhan University, 430060, China; and
| | - Hongping Deng
- Department of Vascular Surgery, Renmin Hospital of Wuhan University, 430060, China.
| | - Sizheng Xiong
- Department of Vascular Surgery, Renmin Hospital of Wuhan University, 430060, China.
| | - Ling Gao
- Master of Medicine, Department of Endocrinology, Renmin Hospital of Wuhan University, 430060, China; and
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13
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Dai M, Zhu X, Zeng S, Liu Q, Hu R, Huang L, Wang Y, Deng J, Yu Q. Dexmedetomidine protects cells from Angiotensin II-induced smooth muscle cell phenotype switch and endothelial cell dysfunction. Cell Cycle 2023; 22:450-463. [PMID: 36196460 PMCID: PMC9879174 DOI: 10.1080/15384101.2022.2124489] [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: 06/07/2022] [Revised: 08/07/2022] [Accepted: 09/10/2022] [Indexed: 01/29/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is a vascular disorder greatly threatening life of the elderly population. Dexmedetomidine (DEX), an α2-adrenergic receptor agonist, has been shown to suppress AAA development. Nevertheless, the signaling pathways that might be mediated by DEX in AAA has not been clarified. Vascular smooth muscle cells (VSMCs) and endothelial cells (ECs) were treated with Angiotensin II (Ang II) to mimic AAA in vitro. BrdU, wound healing, and Transwell assays were utilized for measuring VSMC proliferation and migration. Western blotting was used for evaluating protein levels of contractile VSMC markers, collagens and matrix metalloproteinases (MMPs) in VSMCs as well as apoptosis- and HMGB1/TLR4/NF-κB signaling-related markers in ECs. Cell adhesion molecule expression and monocyte-endothelial adhesion were assessed by immunofluorescence staining and adhesion assays. Flow cytometry was implemented for analyzing EC apoptosis. Hematoxylin-eosin staining and ELISA were used to detect the effect of DEX in vivo. In this study, DEX inhibited Ang II-evoked VSMC phenotype switch and extracellular matrix degradation. DEX suppressed the inflammatory response and apoptosis of ECs induced by Ang II. DEX inhibited HMGB1/TLR4/NF-κB signaling pathway in Ang II-treated ECs. DEX attenuated Ang II-induced AAA and inflammation in mice. Overall, DEX ameliorates Ang II-induced VSMC phenotype switch, and inactivates HMGB1/TLR4/NF-κB signaling pathway to alleviate Ang II-induced EC dysfunction.
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Affiliation(s)
- Min Dai
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xiaohong Zhu
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Simin Zeng
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Qiang Liu
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ruilin Hu
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Lianghui Huang
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Yu Wang
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jun Deng
- Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Qi Yu
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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14
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Zhou C, Sun P, Hamblin MH, Yin KJ. Genetic deletion of Krüppel-like factor 11 aggravates traumatic brain injury. J Neuroinflammation 2022; 19:281. [PMID: 36403074 PMCID: PMC9675068 DOI: 10.1186/s12974-022-02638-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/06/2022] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND The long-term functional recovery of traumatic brain injury (TBI) is hampered by pathological events, such as parenchymal neuroinflammation, neuronal death, and white matter injury. Krüppel-like transcription factor 11 (KLF 11) belongs to the zinc finger family of transcription factors and actively participates in various pathophysiological processes in neurological disorders. Up to now, the role and molecular mechanisms of KLF11 in regulating the pathogenesis of brain trauma is poorly understood. METHODS KLF11 knockout (KO) and wild-type (WT) mice were subjected to experimental TBI, and sensorimotor and cognitive functions were evaluated by rotarod, adhesive tape removal, foot fault, water maze, and passive avoidance tests. Brain tissue loss/neuronal death was examined by MAP2 and NeuN immunostaining, and Cresyl violet staining. White matter injury was assessed by Luxol fast blue staining, and also MBP/SMI32 and Caspr/Nav1.6 immunostaining. Activation of cerebral glial cells and infiltration of blood-borne immune cells were detected by GFAP, Iba-1/CD16/32, Iba-1/CD206, Ly-6B, and F4/80 immunostaining. Brian parenchymal inflammatory cytokines were measured with inflammatory array kits. RESULTS Genetic deletion of KLF11 worsened brain trauma-induced sensorimotor and cognitive deficits, brain tissue loss and neuronal death, and white matter injury in mice. KLF11 genetic deficiency in mice also accelerated post-trauma astrocytic activation, promoted microglial polarization to a pro-inflammatory phenotype, and increased the infiltration of peripheral neutrophils and macrophages into the brain parenchyma. Mechanistically, loss-of-KLF11 function was found to directly increase the expression of pro-inflammatory cytokines in the brains of TBI mice. CONCLUSION KLF11 acts as a novel protective factor in TBI. KLF11 genetic deficiency in mice aggravated the neuroinflammatory responses, grey and white matter injury, and impaired long-term sensorimotor and cognitive recovery. Elucidating the functional importance of KLF11 in TBI may lead us to discover novel pharmacological targets for the development of effective therapies against brain trauma.
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Affiliation(s)
- Chao Zhou
- Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, 15261, USA
- Department of Neurology, School of Medicine, Pittsburgh Institute of Brain Disorders & Recovery, University of Pittsburgh, S514 BST, 200 Lothrop Street, Pittsburgh, PA, 15213, USA
| | - Ping Sun
- Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, 15261, USA
- Department of Neurology, School of Medicine, Pittsburgh Institute of Brain Disorders & Recovery, University of Pittsburgh, S514 BST, 200 Lothrop Street, Pittsburgh, PA, 15213, USA
| | - Milton H Hamblin
- Tulane University Health Sciences Center, Tulane University, New Orleans, LA, 70112, USA
- College of Pharmacy, Xavier University of Louisiana, New Orleans, LA, 70125, USA
| | - Ke-Jie Yin
- Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, 15261, USA.
- Department of Neurology, School of Medicine, Pittsburgh Institute of Brain Disorders & Recovery, University of Pittsburgh, S514 BST, 200 Lothrop Street, Pittsburgh, PA, 15213, USA.
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15
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Zhao G, Zhao Y, Lu H, Chang Z, Liu H, Wang H, Liang W, Liu Y, Zhu T, Rom O, Guo Y, Chang L, Yang B, Garcia-Barrio MT, Lin JD, Chen YE, Zhang J. BAF60c prevents abdominal aortic aneurysm formation through epigenetic control of vascular smooth muscle cell homeostasis. J Clin Invest 2022; 132:e158309. [PMID: 36066968 PMCID: PMC9621131 DOI: 10.1172/jci158309] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 09/01/2022] [Indexed: 01/19/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is a life-threatening vascular disease. BAF60c, a unique subunit of the SWItch/sucrose nonfermentable (SWI/SNF) chromatin remodeling complex, is critical for cardiac and skeletal myogenesis, yet little is known about its function in the vasculature and, specifically, in AAA pathogenesis. Here, we found that BAF60c was downregulated in human and mouse AAA tissues, with primary staining to vascular smooth muscle cells (VSMCs), confirmed by single-cell RNA-sequencing. In vivo studies revealed that VSMC-specific knockout of Baf60c significantly aggravated both angiotensin II- (Ang II-) and elastase-induced AAA formation in mice, with a significant increase in elastin degradation, inflammatory cell infiltration, VSMC phenotypic switch, and apoptosis. In vitro studies showed that BAF60c knockdown in VSMCs resulted in loss of contractile phenotype, increased VSMC inflammation, and apoptosis. Mechanistically, we demonstrated that BAF60c preserved VSMC contractile phenotype by strengthening serum response factor (SRF) association with its coactivator P300 and the SWI/SNF complex and suppressing VSMC inflammation by promoting a repressive chromatin state of NF-κB target genes as well as preventing VSMC apoptosis through transcriptional activation of KLF5-dependent B cell lymphoma 2 (BCL2) expression. Our identification of the essential role of BAF60c in preserving VSMC homeostasis expands its therapeutic potential in preventing and treating AAA.
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Affiliation(s)
- Guizhen Zhao
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Yang Zhao
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Haocheng Lu
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Ziyi Chang
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Hongyu Liu
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Huilun Wang
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Wenying Liang
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Yuhao Liu
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Tianqing Zhu
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Oren Rom
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
- Department of Pathology and Translational Pathobiology, Louisiana State University Health Science Center–Shreveport, Shreveport, Louisiana, USA
| | - Yanhong Guo
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Lin Chang
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Bo Yang
- Department of Cardiac Surgery, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Minerva T. Garcia-Barrio
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Jiandie D. Lin
- Life Sciences Institute and Department of Cell & Developmental Biology, University of Michigan, Ann Arbor, Michigan, USA
| | - Y. Eugene Chen
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
| | - Jifeng Zhang
- Frankel Cardiovascular Center, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, USA
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16
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Ghajar-Rahimi G, Agarwal A. Endothelial KLF11 as a Nephroprotectant in AKI. KIDNEY360 2022; 3:1302-1305. [PMID: 36176668 PMCID: PMC9416841 DOI: 10.34067/kid.0003422022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 06/14/2022] [Indexed: 06/16/2023]
Affiliation(s)
- Gelare Ghajar-Rahimi
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- Nephrology Research and Training Center, University of Alabama at Birmingham, Birmingham, Alabama
- Division of Cardiothoracic Surgery, Department of Surgery, University of Alabama at Birmingham, Birmingham, Alabama
| | - Anupam Agarwal
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- Birmingham Veterans Administration Health Care Services, Birmingham, Alabama
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17
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Wang Y, Gao P, Li F, Du J. Insights on aortic aneurysm and dissection: Role of the extracellular environment in vascular homeostasis. J Mol Cell Cardiol 2022; 171:90-101. [DOI: 10.1016/j.yjmcc.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 05/06/2022] [Accepted: 06/29/2022] [Indexed: 11/29/2022]
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18
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Jauhiainen S, Kiema M, Hedman M, Laakkonen JP. Large Vessel Cell Heterogeneity and Plasticity: Focus in Aortic Aneurysms. Arterioscler Thromb Vasc Biol 2022; 42:811-818. [PMID: 35587695 DOI: 10.1161/atvbaha.121.316237] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Smooth muscle cells and endothelial cells have a remarkable level of plasticity in vascular pathologies. In thoracic and abdominal aortic aneurysms, smooth muscle cells have been suggested to undergo phenotypic switching and to contribute to degradation of the aortic wall structure in response to, for example, inflammatory mediators, dysregulation of growth factor signaling or oxidative stress. Recently, endothelial-to-mesenchymal transition, and a clonal expansion of degradative smooth muscle cells and immune cells, as well as mesenchymal stem-like cells have been suggested to contribute to the progression of aortic aneurysms. What are the factors driving the aortic cell phenotype changes and how vascular flow, known to affect aortic wall structure and to be altered in aortic aneurysms, could affect aortic cell remodeling? In this review, we summarize the current literature on aortic cell heterogeneity and phenotypic switching in relation to changes in vascular flow and aortic wall structure in aortic aneurysms in clinical samples with special focus on smooth muscle and endothelial cells. The differences between thoracic and abdominal aortic aneurysms are discussed.
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Affiliation(s)
- Suvi Jauhiainen
- A.I. Virtanen Institute for Molecular Sciences (S.J., M.K., J.P.L.), University of Eastern Finland, Kuopio
| | - Miika Kiema
- A.I. Virtanen Institute for Molecular Sciences (S.J., M.K., J.P.L.), University of Eastern Finland, Kuopio
| | - Marja Hedman
- Institute of Clinical Medicine (M.H.), University of Eastern Finland, Kuopio
- Department of Clinical Radiology, Kuopio University Hospital, Finland (M.H.)
- Department of Heart and Thoracic Surgery, Kuopio University Hospital, Heart Center, Kuopio, Finland (M.H.)
| | - Johanna P Laakkonen
- A.I. Virtanen Institute for Molecular Sciences (S.J., M.K., J.P.L.), University of Eastern Finland, Kuopio
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19
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Nath KA, Singh RD, Croatt AJ, Ackerman AW, Grande JP, Khazaie K, Chen YE, Zhang J. KLF11 Is a Novel Endogenous Protectant against Renal Ischemia-Reperfusion Injury. KIDNEY360 2022; 3:1417-1422. [PMID: 36176648 PMCID: PMC9416845 DOI: 10.34067/kid.0002272022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/05/2022] [Indexed: 01/19/2023]
Abstract
Discovering new nephroprotectants may provide therapeutic strategies in AKI.This study provides the first evidence that KLF11, a member of the Krüppel-like factor (KLF) family of proteins, protects against AKI.In the absence of KLF11, exaggerated induction of endothelin-1 and IL-6 occurs after ischemic renal injury and may contribute to worse AKI.
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Affiliation(s)
- Karl A. Nath
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Raman Deep Singh
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Anthony J. Croatt
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Allan W. Ackerman
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota
| | - Joseph P. Grande
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | | | - Y. Eugene Chen
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan
| | - Jifeng Zhang
- Department of Internal Medicine, Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan
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20
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Liang W, Lu H, Sun J, Zhao G, Wang H, Guo Y, Eitzman D, Chen YE, Fan Y, Zhang J. KLF11 Protects against Venous Thrombosis via Suppressing Tissue Factor Expression. Thromb Haemost 2022; 122:777-788. [PMID: 34428834 PMCID: PMC10468287 DOI: 10.1055/s-0041-1735191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Krüppel-like factors (KLFs) play essential roles in multiple biological functions, including maintaining vascular homeostasis. KLF11, a causative gene for maturity-onset diabetes of the young type 7, inhibits endothelial activation and protects against stroke. However, the role of KLF11 in venous thrombosis remains to be explored. Utilizing stasis-induced murine deep vein thrombosis (DVT) model and cultured endothelial cells (ECs), we identified an increase of KLF11 expression under prothrombotic conditions both in vivo and in vitro. The expression change of thrombosis-related genes was determined by utilizing gain- and loss-of-function approaches to alter KLF11 expression in ECs. Among these genes, KLF11 significantly downregulated tumor necrosis factor-α (TNF-α)-induced tissue factor (TF) gene transcription. Using reporter gene assay, chromatin immunoprecipitation assay, and co-immunoprecipitation, we revealed that KLF11 could reduce TNF-α-induced binding of early growth response 1 (EGR1) to TF gene promoter in ECs. In addition, we demonstrated that conventional Klf11 knockout mice were more susceptible to developing stasis-induced DVT. These results suggest that under prothrombotic conditions, KLF11 downregulates TF gene transcription via inhibition of EGR1 in ECs. In conclusion, KLF11 protects against venous thrombosis, constituting a potential molecular target for treating thrombosis.
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Affiliation(s)
- Wenying Liang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, Unites States
| | - Haocheng Lu
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Jinjian Sun
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Guizhen Zhao
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Huilun Wang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan, Unites States
| | - Yanhong Guo
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Daniel Eitzman
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Y Eugene Chen
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
| | - Yanbo Fan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, Ohio, Unites States
- Division of Cardiovascular Health and Disease, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, Unites States
| | - Jifeng Zhang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan Medical Center, Ann Arbor, Michigan, United States
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21
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Cheng CK, Lin X, Pu Y, Tse JKY, Wang Y, Zhang CL, Cao X, Lau CW, Huang J, He L, Luo JY, Shih YT, Wan S, Ng CF, Wang L, Ma RCW, Chiu JJ, Chan TF, Yu Tian X, Huang Y. SOX4 is a novel phenotypic regulator of endothelial cells in atherosclerosis revealed by single-cell analysis. J Adv Res 2022; 43:187-203. [PMID: 36585108 PMCID: PMC9811326 DOI: 10.1016/j.jare.2022.02.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 01/07/2023] Open
Abstract
INTRODUCTION Atherosclerotic complications represent the leading cause of cardiovascular mortality globally. Dysfunction of endothelial cells (ECs) often initiates the pathological events in atherosclerosis. OBJECTIVES In this study, we sought to investigate the transcriptional profile of atherosclerotic aortae, identify novel regulator in dysfunctional ECs and hence provide mechanistic insights into atherosclerotic progression. METHODS We applied single-cell RNA sequencing (scRNA-seq) on aortic cells from Western diet-fed apolipoprotein E-deficient (ApoE-/-) mice to explore the transcriptional landscape and heterogeneity of dysfunctional ECs. In vivo validation of SOX4 upregulation in ECs were performed in atherosclerotic tissues, including mouse aortic tissues, human coronary arteries, and human renal arteries. Single-cell analysis on human aortic aneurysmal tissue was also performed. Downstream vascular abnormalities induced by EC-specific SOX4 overexpression, and upstream modulators of SOX4 were revealed by biochemical assays, immunostaining, and wire myography. Effects of shear stress on endothelial SOX4 expression was investigated by in vitro hemodynamic study. RESULTS Among the compendium of aortic cells, mesenchymal markers in ECs were significantly enriched. Two EC subsets were subsequently distinguished, as the 'endothelial-like' and 'mesenchymal-like' subsets. Conventional assays consistently identified SOX4 as a novel atherosclerotic marker in mouse and different human arteries, additional to a cancer marker. EC-specific SOX4 overexpression promoted atherogenesis and endothelial-to-mesenchymal transition (EndoMT). Importantly, hyperlipidemia-associated cytokines and oscillatory blood flow upregulated, whereas the anti-diabetic drug metformin pharmacologically suppressed SOX4 level in ECs. CONCLUSION Our study unravels SOX4 as a novel phenotypic regulator during endothelial dysfunction, which exacerbates atherogenesis. Our study also pinpoints hyperlipidemia-associated cytokines and oscillatory blood flow as endogenous SOX4 inducers, providing more therapeutic insights against atherosclerotic diseases.
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Affiliation(s)
- Chak Kwong Cheng
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Department of Biomedical Sciences, City University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Xiao Lin
- School of Life Sciences, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Yujie Pu
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Joyce Ka Yu Tse
- School of Life Sciences, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Yu Wang
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Cheng-Lin Zhang
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Xiaoyun Cao
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Chi Wai Lau
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Juan Huang
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Lei He
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Jiang-Yun Luo
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Yu-Tsung Shih
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Song Wan
- Department of Surgery, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Chi Fai Ng
- Department of Surgery, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Li Wang
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Ronald Ching Wan Ma
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Hong Kong Institute of Diabetes and Obesity, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Jeng-Jiann Chiu
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli 35053, Taiwan; School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Ting Fung Chan
- School of Life Sciences, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region
| | - Xiao Yu Tian
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region.
| | - Yu Huang
- School of Biomedical Sciences and Li Ka Shing Institute of Health Science, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Heart and Vascular Institute and Shenzhen Research Institute, The Chinese University of Hong Kong, 999077, Hong Kong Special Administrative Region; Department of Biomedical Sciences, City University of Hong Kong, 999077, Hong Kong Special Administrative Region.
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