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Thornton M, Sommer N, McGonigle M, Ram AK, Yerrathota S, Ehirim H, Chaturvedi A, Phan JD, Chakraborty A, Chakravarthi PV, Gunewardena S, Tyagi M, Talreja J, Wang T, Singhal P, Tran PV, Fields TA, Ray PE, Dhillon NK, Sharma M. Notch3 deletion regulates HIV-1 gene expression and systemic inflammation to ameliorate chronic kidney disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.09.12.557484. [PMID: 37745500 PMCID: PMC10515825 DOI: 10.1101/2023.09.12.557484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
Antiretroviral therapy (ART) has decreased HIV-1 associated morbidity. However, despite ART, immune cells remain latently infected and slowly release viral proteins, leading to chronic inflammation and HIV-1 associated comorbidities. New strategies are needed to target viral proteins and inflammation. We found activation of Notch3 in several renal cells of the HIV-1 mouse model (HIV-Tg26) and in patients with HIV associated Nephropathy. We hypothesized that targeting Notch3 activation constitutes an effective therapy for HIV-related chronic kidney diseases (HIV-CKD). We generated HIV-Tg26 mice with Notch3 knocked out (Tg-N3KO). Compared to HIV-Tg26 mice at 3 months, HIV-Tg-N3KO mice showed a marked reduction in renal injury, skin lesions and mortality rate. Bulk RNA sequencing revealed that N3KO not only reduced renal infiltrating cells but significantly reduced the expression of HIV genes. Moreover, Notch3 activated the HIV- promoter and induction of HIV-1 resulted in increased Notch3 activation indicating a feedback mechanism. Further, bone marrow derived macrophages (BMDMs) from HIV-Tg26 mice showed activation of Notch3 indicating systemic effects. Consistent with that, systemic levels of TNF-α, MCP-1 and other inflammatory chemokines and cytokines were reduced in Tg-N3KO mice. Thus, Notch3 inhibition/deletion has a dual therapeutic effect in HIV-CKD and may extend to other HIV-related pathologies.
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Affiliation(s)
- Mackenzie Thornton
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Nicole Sommer
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Mercedes McGonigle
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Anil Kumar Ram
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
| | - Sireesha Yerrathota
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Henrietta Ehirim
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Aakriti Chaturvedi
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Johnny Dinh Phan
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Anubhav Chakraborty
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Praveen V Chakravarthi
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS
| | - Sumedha Gunewardena
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS
| | - Mudit Tyagi
- Department of Medicine, Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA
| | - Jaya Talreja
- Division of Pulmonary, Critical Care and Sleep Medicine, Wayne State University School of Medicine and Detroit Medical Center, Detroit, MI
| | - Tao Wang
- Department of Biology, Medicine and Health, The University of Manchester, UK
| | - Pravin Singhal
- Institute of Molecular Medicine, Feinstein Institute for Medical Research, Zucker School of Medicine at Hofstra-Northwell, New York, NY
| | - Pamela V Tran
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Timothy A Fields
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
| | - Patricio E Ray
- Child Health Research Center and Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, VA
| | - Navneet K Dhillon
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
| | - Madhulika Sharma
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS
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Wang X, Chang HC, Gu X, Han W, Mao S, Lu L, Jiang S, Ding H, Han S, Qu X, Bao Z. Renal lipid accumulation and aging linked to tubular cells injury via ANGPTL4. Mech Ageing Dev 2024; 219:111932. [PMID: 38580082 DOI: 10.1016/j.mad.2024.111932] [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: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 04/07/2024]
Abstract
Renal tubular epithelial cells are vulnerable to stress-induced damage, including excessive lipid accumulation and aging, with ANGPTL4 potentially playing a crucial bridging role between these factors. In this study, RNA-sequencing was used to identify a marked increase in ANGPTL4 expression in kidneys of diet-induced obese and aging mice. Overexpression and knockout of ANGPTL4 in renal tubular epithelial cells (HK-2) was used to investigate the underlying mechanism. Subsequently, ANGPTL4 expression in plasma and kidney tissues of normal young controls and elderly individuals was analyzed using ELISA and immunohistochemical techniques. RNA sequencing results showed that ANGPTL4 expression was significantly upregulated in the kidney tissue of diet-induced obesity and aging mice. In vitro experiments demonstrated that overexpression of ANGPTL4 in HK-2 cells led to increased lipid deposition and senescence. Conversely, the absence of ANGPTL4 appears to alleviate the impact of free fatty acids (FFA) on aging in HK-2 cells. Additionally, aging HK-2 cells exhibited elevated ANGPTL4 expression, and stress response markers associated with cell cycle arrest. Furthermore, our clinical evidence revealed dysregulation of ANGPTL4 expression in serum and kidney tissue samples obtained from elderly individuals compared to young subjects. Our study findings indicate a potential association between ANGPTL4 and age-related metabolic disorders, as well as injury to renal tubular epithelial cells. This suggests that targeting ANGPTL4 could be a viable strategy for the clinical treatment of renal aging.
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Affiliation(s)
- Xiaojun Wang
- Department of Gerontology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - Hung-Chen Chang
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - Xuchao Gu
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Department of Traditional Chinese Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - Wanlin Han
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - Shihang Mao
- Department of ENT Institute and Otorhinolaryngology, Eye & ENT Hospital, State Key Laboratory of Medical Neurobiology, NHC Key Laboratory of Hearing Medicine Research, Fudan University, Shanghai, China
| | - Lili Lu
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Department of Traditional Chinese Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - Shuai Jiang
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Department of Thoracic Surgery, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China
| | - Haiyong Ding
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Department of Urologic Surgery, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China.
| | - Shisheng Han
- Department of Nephrology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Xinkai Qu
- Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Department of Cardiology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China.
| | - Zhijun Bao
- Department of Gerontology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China; Shanghai Key Laboratory of Clinical Geriatric Medicine, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, China.
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Mitrovic K, Zivotic I, Kolic I, Zakula J, Zivkovic M, Stankovic A, Jovanovic I. A preliminary study of the miRNA restitution effect on CNV-induced miRNA downregulation in CAKUT. BMC Genomics 2024; 25:218. [PMID: 38413914 PMCID: PMC10900603 DOI: 10.1186/s12864-024-10121-8] [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: 07/25/2023] [Accepted: 02/14/2024] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND The majority of CAKUT-associated CNVs overlap at least one miRNA gene, thus affecting the cellular levels of the corresponding miRNA. We aimed to investigate the potency of restitution of CNV-affected miRNA levels to remediate the dysregulated expression of target genes involved in kidney physiology and development in vitro. METHODS Heterozygous MIR484 knockout HEK293 and homozygous MIR185 knockout HEK293 cell lines were used as models depicting the deletion of the frequently affected miRNA genes by CAKUT-associated CNVs. After treatment with the corresponding miRNA mimics, the levels of the target genes have been compared to the non-targeting control treatment. For both investigated miRNAs, MDM2 and PKD1 were evaluated as common targets, while additional 3 genes were investigated as targets of each individual miRNA (NOTCH3, FIS1 and APAF1 as hsa-miR-484 targets and RHOA, ATF6 and CDC42 as hsa-miR-185-5p targets). RESULTS Restitution of the corresponding miRNA levels in both knockout cell lines has induced a change in the mRNA levels of certain candidate target genes, thus confirming the potential to alleviate the CNV effect on miRNA expression. Intriguingly, HEK293 WT treatment with investigated miRNA mimics has triggered a more pronounced effect, thus suggesting the importance of miRNA interplay in different genomic contexts. CONCLUSIONS Dysregulation of multiple mRNA targets mediated by CNV-affected miRNAs could represent the underlying mechanism behind the unresolved CAKUT occurrence and phenotypic variability observed in CAKUT patients. Characterizing miRNAs located in CNVs and their potential to become molecular targets could eventually help in understanding and improving the management of CAKUT.
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Affiliation(s)
- Kristina Mitrovic
- Department of Radiobiology and Molecular Genetics, "Vinča" Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11001, Belgrade, P.O. Box 522, Serbia
| | - Ivan Zivotic
- Department of Radiobiology and Molecular Genetics, "Vinča" Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11001, Belgrade, P.O. Box 522, Serbia
| | - Ivana Kolic
- Department of Radiobiology and Molecular Genetics, "Vinča" Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11001, Belgrade, P.O. Box 522, Serbia
| | - Jelena Zakula
- Department of Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11001, Belgrade, P.O. Box 522, Serbia
| | - Maja Zivkovic
- Department of Radiobiology and Molecular Genetics, "Vinča" Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11001, Belgrade, P.O. Box 522, Serbia
| | - Aleksandra Stankovic
- Department of Radiobiology and Molecular Genetics, "Vinča" Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11001, Belgrade, P.O. Box 522, Serbia
| | - Ivan Jovanovic
- Department of Radiobiology and Molecular Genetics, "Vinča" Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, 11001, Belgrade, P.O. Box 522, Serbia.
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Wang Q, Fan X, Sheng Q, Yang M, Zhou P, Lu S, Gao Y, Kong Z, Shen N, Lv Z, Wang R. N6-methyladenosine methylation in kidney injury. Clin Epigenetics 2023; 15:170. [PMID: 37865763 PMCID: PMC10590532 DOI: 10.1186/s13148-023-01586-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/11/2023] [Indexed: 10/23/2023] Open
Abstract
Multiple mechanisms are involved in kidney damage, among which the role of epigenetic modifications in the occurrence and development of kidney diseases is constantly being revealed. However, N6-methyladenosine (M6A), a well-known post-transcriptional modification, has been regarded as the most prevalent epigenetic modifications in higher eukaryotic, which is involved in various biological processes of cells such as maintaining the stability of mRNA. The role of M6A modification in the mechanism of kidney damage has attracted widespread attention. In this review, we mainly summarize the role of M6A modification in the progression of kidney diseases from the following aspects: the regulatory pattern of N6-methyladenosine, the critical roles of N6-methyladenosine in chronic kidney disease, acute kidney injury and renal cell carcinoma, and then reveal its potential significance in the diagnosis and treatment of various kidney diseases. A better understanding of this field will be helpful for future research and clinical treatment of kidney diseases.
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Affiliation(s)
- Qimeng Wang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
| | - Xiaoting Fan
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
| | - Qinghao Sheng
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Meilin Yang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Ping Zhou
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
| | - Shangwei Lu
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Ying Gao
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Zhijuan Kong
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Ning Shen
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China
| | - Zhimei Lv
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China.
| | - Rong Wang
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China.
- Department of Nephrology, Shandong Provincial Hospital, Shandong University, Jinan, 250021, Shandong, China.
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Daniel EA, Sommer NA, Sharma M. Polycystic kidneys: interaction of notch and renin. Clin Sci (Lond) 2023; 137:1145-1150. [PMID: 37553961 PMCID: PMC11132639 DOI: 10.1042/cs20230023] [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: 05/28/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 08/10/2023]
Abstract
Polycystic kidney disease (PKD) is a developmental disorder, which either manifests in early childhood or later in life, depending on the genetic mutation one harbors. The mechanisms of cyst initiation are not well understood. Increasing literature is now suggesting that Notch signaling may play a critical role in PKD. Activation of Notch signaling is important during nephrogenesis and slows down after development. Deletion of various Notch molecules in the cap mesenchyme leads to formation of cysts and early death in mice. A new study by Belyea et al. has now found that cells of renin lineage may link Notch expression and cystic kidney disease. Here, we use our understanding of Notch signaling and PKD to speculate about the significance of these interactions.
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Affiliation(s)
- Emily A Daniel
- Department of Internal Medicine, The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, Kansas 66160, U.S.A
| | - Nicole A Sommer
- Department of Internal Medicine, The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, Kansas 66160, U.S.A
| | - Madhulika Sharma
- Department of Internal Medicine, The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, Kansas 66160, U.S.A
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Notch Signaling in Acute Inflammation and Sepsis. Int J Mol Sci 2023; 24:ijms24043458. [PMID: 36834869 PMCID: PMC9967996 DOI: 10.3390/ijms24043458] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/27/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
Notch signaling, a highly conserved pathway in mammals, is crucial for differentiation and homeostasis of immune cells. Besides, this pathway is also directly involved in the transmission of immune signals. Notch signaling per se does not have a clear pro- or anti-inflammatory effect, but rather its impact is highly dependent on the immune cell type and the cellular environment, modulating several inflammatory conditions including sepsis, and therefore significantly impacts the course of disease. In this review, we will discuss the contribution of Notch signaling on the clinical picture of systemic inflammatory diseases, especially sepsis. Specifically, we will review its role during immune cell development and its contribution to the modulation of organ-specific immune responses. Finally, we will evaluate to what extent manipulation of the Notch signaling pathway could be a future therapeutic strategy.
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Politis PK, Charonis AS. Calreticulin in renal fibrosis: A short review. J Cell Mol Med 2022; 26:5949-5954. [PMID: 36440574 PMCID: PMC9753439 DOI: 10.1111/jcmm.17627] [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: 09/21/2022] [Revised: 11/02/2022] [Accepted: 11/11/2022] [Indexed: 11/29/2022] Open
Abstract
Fibrosis is a common denominator of several pathological conditions. Over the last decade, Calreticulin has emerged as a critical player in the fibrotic processes in many tissues and organs. Here we review the recent advances in our understanding of the regulatory roles of Calreticulin in renal fibrosis. In particular, a proteomic screen that we performed more than 15 years ago, for the identification of novel components involved in the mechanisms of renal fibrosis, led to the observation that Calreticulin is associated with the initiation and progression of kidney fibrosis in a rodent model. We also showed that altered expression levels of Calreticulin in vitro and in vivo are significantly affecting the fibrotic phenotype in cellular systems and animal models, respectively. We also identified an upstream regulatory mechanism that mediates the transcriptional control of Calreticulin expression during the progression of renal fibrosis, by showing that the druggable orphan nuclear receptor NR5A2 and its SUMOylation is involved in this action. These data provide novel targets for future pharmacological interventions against fibrosis. In addition, further proteomic analysis uncovered a correlation between the up-regulation of Calreticulin and that of 14-3-3σ protein. Collectively, our previous observations suggest that Calreticulin is a central node in a regulatory axis that controls the initiation and progression of renal fibrosis.
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Affiliation(s)
- Panagiotis K. Politis
- Center for Basic ResearchBiomedical Research Foundation of the Academy of AthensAthensGreece
| | - Aristidis S. Charonis
- Center for Clinical, Experimental Surgery and Translational ResearchBiomedical Research Foundation of the Academy of AthensAthensGreece,University Research Institute of Maternal and Child Health and Precision MedicineAthensGreece
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8
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Xu-Dubois Y, Kavvadas P, Keuylian Z, Hertig A, Rondeau E, Chatziantoniou C. Notch3 expression in capillary pericytes predicts worse graft outcome in human renal grafts with antibody-mediated rejection. J Cell Mol Med 2022; 26:3203-3212. [PMID: 35611804 PMCID: PMC9170800 DOI: 10.1111/jcmm.17325] [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: 11/25/2021] [Revised: 03/04/2022] [Accepted: 03/22/2022] [Indexed: 11/29/2022] Open
Abstract
Microvasculature consisting of endothelial cells and pericytes is the main site of injury during antibody-mediated rejection (ABMR) of renal grafts. Little is known about the mechanisms of activation of pericytes in this pathology. We have found recently that activation of Notch3, a mediator of vascular smooth muscle cell proliferation and dedifferentiation, promotes renal inflammation and fibrosis and aggravates progression of renal disease. Therefore, we studied the pericyte expression of Notch3 in 49 non-selected renal graft biopsies (32 for clinical cause, 17 for graft surveillance). We analysed its relationship with patients' clinical and morphological data, and compared with the expression of partial endothelial mesenchymal transition (pEndMT) markers, known to reflect endothelial activation during ABMR. Notch3 was de novo expressed in pericytes of grafts with ABMR, and was significantly correlated with the microcirculation inflammation scores of peritubular capillaritis and glomerulitis and with the expression of pEndMT markers. Notch3 expression was also associated with graft dysfunction and proteinuria at the time of biopsy and in the long term. Multivariate analysis confirmed pericyte expression of Notch3 as an independent risk factor predicting graft loss. These data suggest that Notch3 is activated in the pericytes of renal grafts with ABMR and is associated with poor graft outcome.
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Affiliation(s)
- Yichun Xu-Dubois
- INSERM UMRS 1155, Tenon Hospital, Paris, France.,Public Health, Assistance Publique-Hôpitaux de Paris (AP-HP), Tenon Hospital, Paris, France
| | - Panagiotis Kavvadas
- INSERM UMRS 1155, Tenon Hospital, Paris, France.,Sorbonne University, Paris, France
| | - Zela Keuylian
- INSERM UMRS 1155, Tenon Hospital, Paris, France.,Sorbonne University, Paris, France
| | - Alexandre Hertig
- INSERM UMRS 1155, Tenon Hospital, Paris, France.,Sorbonne University, Paris, France.,Nephrology Department, Foch Hospital, Suresnes, France
| | - Eric Rondeau
- INSERM UMRS 1155, Tenon Hospital, Paris, France.,Sorbonne University, Paris, France.,Intensive Care Nephrology and Transplantation Department, Tenon Hospital, APHP, Paris, France
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Li MR, Lei CT, Tang H, Yin XJ, Hao Z, Qiu Y, Xie YR, Zeng JY, Su H, Zhang C. MAD2B promotes podocyte injury through regulating Numb-dependent Notch 1 pathway in diabetic nephropathy. Int J Biol Sci 2022; 18:1896-1911. [PMID: 35342338 PMCID: PMC8935242 DOI: 10.7150/ijbs.68977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 02/03/2022] [Indexed: 11/12/2022] Open
Abstract
Rationale: Recent studies have demonstrated that the loss of podocyte is a critical event in diabetic nephropathy (DN). Previously, our group have found that the mitotic arrest deficient protein MAD2B was involved in high glucose (HG)-induced podocyte injury by regulating APC/C activity. However, the exact mechanism of MAD2B implicated in podocyte injury is still lacking. Methods: The experiments were conducted by using kidney tissues from streptozotocin (STZ) induced diabetic mice with or without podocyte-specific deletion of MAD2B and the cultured podocytes exposed to different treatments. Glomerular pathological injury was evaluated by periodic acid-Schiff staining and transmission electron microscopy. The endogenous interaction between MAD2B and Numb was discovered by yeast two-hybrid analysis and co-immunoprecipitation assay. The expressions of MAD2B, Numb and related pathway were detected by western blot, immunochemistry and immunofluorescence. Results: The present study revealed that MAD2B was upregulated in diabetic glomeruli and cultured podocytes under hyperglycemic conditions. Podocyte-specific deletion of MAD2B alleviated podocyte injury and renal function deterioration in mice of diabetic nephropathy. Afterwards, MAD2B was found to interact with Numb, which was downregulated in diabetic glomeruli and HG-stimulated cultured podocytes. Interestingly, MAD2B genetic deletion could partly reverse the decline of Numb in podocytes exposed to HG and in diabetic mice, and the expressions of Numb downstream molecules such as NICD and Hes-1 were decreased accordingly. In addition, overexpression of Numb ameliorated HG-induced podocyte injury. Conclusions: The present findings suggest that upregulated MAD2B expression contributes to Numb depletion and activation of Notch 1 signaling pathway, which ultimately leads to podocyte injury during DN progression.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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10
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Wu X, Ren L, Yang Q, Song H, Tang Q, Zhang M, Zhang J, Tang Z, Shi S. Glucocorticoids Inhibit EGFR Signaling Activation in Podocytes in Anti-GBM Crescentic Glomerulonephritis. Front Med (Lausanne) 2022; 9:697443. [PMID: 35223886 PMCID: PMC8866651 DOI: 10.3389/fmed.2022.697443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 01/18/2022] [Indexed: 11/24/2022] Open
Abstract
Glucocorticoids are commonly used to treat anti-GBM crescentic glomerulonephritis, however, the mechanism underlying its therapeutic effectiveness is not completely understood. Since podocyte EGFR/STAT3 signaling is known to mediate the development of anti-GBM glomerulonephritis, we investigated the effect of glucocorticoids on EGFR/STAT3 signaling in podocytes. We found that the levels of phosphorylated (activated) EGFR and STAT3 in podocytes were markedly elevated in anti-GBM patients without glucocorticoids treatment, but were normalized in patients with glucocorticoids treatment. In a rat model of anti-GBM glomerulonephritis, glucocorticoids treatment significantly attenuated the proteinuria, crescent formation, parietal epithelial cell (PEC) activation and proliferation, accompanied by elimination of podocyte EGFR/STAT3 signaling activation. In cultured podocytes, glucocorticoids were found to inhibit HB-EGF-induced EGFR and STAT3 activation. The conditioned medium from podocytes treated with HB-EGF in the absence but not presence of glucocorticoids was capable of activating Notch signaling (which is known to be involved in PEC proliferation and crescent formation) and enhancing proliferative activity in primary PECs, suggesting that glucocorticoids prevent podocytes from producing secreted factors that cause PEC proliferation and crescent formation. Furthermore, we found that glucocorticoids can downregulate the expression of EGFR ligands, EGF and HB-EGF, while upregulate the expression of EGFR inhibitor, Gene 33, explaining how glucocorticoids suppress EGFR signaling. Taken together, glucocorticoids exert therapeutic effect on anti-GBM crescentic glomerulonephritis through inhibiting podocyte EGFR/STAT3 signaling and the downstream pathway that leads to PEC proliferation and crescent formation.
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Affiliation(s)
- Xiaomei Wu
- National Clinical Research Center for Kidney Diseases, Jingling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Lu Ren
- National Clinical Research Center of Kidney Diseases, Jinling Clinical Medical College of Nanjing Medical University, Nanjing, China
| | - Qianqian Yang
- National Clinical Research Center of Kidney Diseases, Jinling Clinical Medical College of Nanjing Medical University, Nanjing, China
| | - Hui Song
- National Clinical Research Center for Kidney Diseases, Jingling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Qiaoli Tang
- National Clinical Research Center for Kidney Diseases, Jingling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Mingchao Zhang
- National Clinical Research Center for Kidney Diseases, Jingling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Jiong Zhang
- National Clinical Research Center for Kidney Diseases, Jingling Hospital, Nanjing University School of Medicine, Nanjing, China
- *Correspondence: Jiong Zhang
| | - Zheng Tang
- National Clinical Research Center for Kidney Diseases, Jingling Hospital, Nanjing University School of Medicine, Nanjing, China
- Zheng Tang
| | - Shaolin Shi
- National Clinical Research Center for Kidney Diseases, Jingling Hospital, Nanjing University School of Medicine, Nanjing, China
- Shaolin Shi
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11
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Epigenetic Modulation of Gremlin-1/NOTCH Pathway in Experimental Crescentic Immune-Mediated Glomerulonephritis. Pharmaceuticals (Basel) 2022; 15:ph15020121. [PMID: 35215234 PMCID: PMC8876310 DOI: 10.3390/ph15020121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 12/20/2022] Open
Abstract
Crescentic glomerulonephritis is a devastating autoimmune disease that without early and properly treatment may rapidly progress to end-stage renal disease and death. Current immunosuppressive treatment provides limited efficacy and an important burden of adverse events. Epigenetic drugs are a source of novel therapeutic tools. Among them, bromodomain and extraterminal domain (BET) inhibitors (iBETs) block the interaction between bromodomains and acetylated proteins, including histones and transcription factors. iBETs have demonstrated protective effects on malignancy, inflammatory disorders and experimental kidney disease. Recently, Gremlin-1 was proposed as a urinary biomarker of disease progression in human anti-neutrophil cytoplasmic antibody (ANCA)-associated crescentic glomerulonephritis. We have now evaluated whether iBETs could regulate Gremlin-1 in experimental anti-glomerular basement membrane nephritis induced by nephrotoxic serum (NTS) in mice, a model resembling human crescentic glomerulonephritis. In NTS-injected mice, the iBET JQ1 inhibited renal Gremlin-1 overexpression and diminished glomerular damage, restoring podocyte numbers. Chromatin immunoprecipitation assay demonstrated BRD4 enrichment of the Grem-1 gene promoter in injured kidneys, consistent with Gremlin-1 epigenetic regulation. Moreover, JQ1 blocked BRD4 binding and inhibited Grem-1 gene transcription. The beneficial effect of iBETs was also mediated by modulation of NOTCH pathway. JQ1 inhibited the gene expression of the NOTCH effectors Hes-1 and Hey-1 in NTS-injured kidneys. Our results further support the role for epigenetic drugs, such as iBETs, in the treatment of rapidly progressive crescentic glomerulonephritis.
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12
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Activation of Notch3 in Renal Tubular Cells Leads to Progressive Cystic Kidney Disease. Int J Mol Sci 2022; 23:ijms23020884. [PMID: 35055068 PMCID: PMC8778905 DOI: 10.3390/ijms23020884] [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: 12/21/2021] [Revised: 01/06/2022] [Accepted: 01/11/2022] [Indexed: 11/18/2022] Open
Abstract
Background: Polycystic kidney disease (PKD) is a genetic disorder affecting millions of people worldwide that is characterized by fluid-filled cysts and leads to end-stage renal disease (ESRD). The hallmarks of PKD are proliferation and dedifferentiation of tubular epithelial cells, cellular processes known to be regulated by Notch signaling. Methods: We found increased Notch3 expression in human PKD and renal cell carcinoma biopsies. To obtain insight into the underlying mechanisms and the functional consequences of this abnormal expression, we developed a transgenic mouse model with conditional overexpression of the intracellular Notch3 (ICN3) domain specifically in renal tubules. We evaluated the alterations in renal function (creatininemia, BUN) and structure (cysts, fibrosis, inflammation) and measured the expression of several genes involved in Notch signaling and the mechanisms of inflammation, proliferation, dedifferentiation, fibrosis, injury, apoptosis and regeneration. Results: After one month of ICN3 overexpression, kidneys were larger with tubules grossly enlarged in diameter, with cell hypertrophy and hyperplasia, exclusively in the outer stripe of the outer medulla. After three months, mice developed numerous cysts in proximal and distal tubules. The cysts had variable sizes and were lined with a single- or multilayered, flattened, cuboid or columnar epithelium. This resulted in epithelial hyperplasia, which was observed as protrusions into the cystic lumen in some of the renal cysts. The pre-cystic and cystic epithelium showed increased expression of cytoskeletal filaments and markers of epithelial injury and dedifferentiation. Additionally, the epithelium showed increased proliferation with an aberrant orientation of the mitotic spindle. These phenotypic tubular alterations led to progressive interstitial inflammation and fibrosis. Conclusions: In summary, Notch3 signaling promoted tubular cell proliferation, the alignment of cell division, dedifferentiation and hyperplasia, leading to cystic kidney diseases and pre-neoplastic lesions.
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13
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Yang X, Feng J, Liang W, Zhu Z, Chen Z, Hu J, Yang D, Ding G. Roles of SIRT6 in kidney disease: a novel therapeutic target. Cell Mol Life Sci 2021; 79:53. [PMID: 34950960 PMCID: PMC11072764 DOI: 10.1007/s00018-021-04061-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 11/24/2021] [Accepted: 11/25/2021] [Indexed: 12/13/2022]
Abstract
SIRT6 is an NAD+ dependent deacetylase that belongs to the mammalian sirtuin family. SIRT6 is mainly located in the nucleus and regulates chromatin remodeling, genome stability, and gene transcription. SIRT6 extensively participates in various physiological activities such as DNA repair, energy metabolism, oxidative stress, inflammation, and fibrosis. In recent years, the role of epigenetics such as acetylation modification in renal disease has gradually received widespread attention. SIRT6 reduces oxidative stress, inflammation, and renal fibrosis, which is of great importance in maintaining cellular homeostasis and delaying the chronic progression of kidney disease. Here, we review the structure and biological function of SIRT6 and summarize the regulatory mechanisms of SIRT6 in kidney disease. Moreover, the role of SIRT6 as a potential therapeutic target for the progression of kidney disease will be discussed. SIRT6 plays an important role in kidney disease. SIRT6 regulates mitochondrial dynamics and mitochondrial biogenesis, induces G2/M cycle arrest, and plays an antioxidant role in nephrotoxicity, IR, obstructive nephropathy, and sepsis-induced AKI. SIRT6 prevents and delays progressive CKD induced by hyperglycemia, kidney senescence, hypertension, and lipid accumulation by regulating mitochondrial biogenesis, and has antioxidant, anti-inflammatory, and antifibrosis effects. Additionally, hypoxia, inflammation, and fibrosis are the main mechanisms of the AKI-to-CKD transition. SIRT6 plays a critical role in the AKI-to-CKD transition and kidney repair through anti-inflammatory, antifibrotic, and mitochondrial quality control mechanisms. AKI Acute kidney injury, CKD Chronic kidney disease.
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Affiliation(s)
- Xueyan Yang
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Jun Feng
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Wei Liang
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Zijing Zhu
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Zhaowei Chen
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Jijia Hu
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Dingping Yang
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China
| | - Guohua Ding
- Division of Nephrology, Renmin Hospital of Wuhan University, Wuhan, 430060, Hubei, China.
- Nephrology and Urology Research Institute of Wuhan University, Wuhan, Hubei, China.
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14
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EP300/CBP is crucial for cAMP-PKA pathway to alleviate podocyte dedifferentiation via targeting Notch3 signaling. Exp Cell Res 2021; 407:112825. [PMID: 34506759 DOI: 10.1016/j.yexcr.2021.112825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 08/24/2021] [Accepted: 09/05/2021] [Indexed: 11/20/2022]
Abstract
Podocyte injury is the hallmark of proteinuric glomerular diseases. Notch3 is neo-activated simultaneously in damaged podocytes and podocyte's progenitor cells of FSGS, indicating a unique role of Notch3. We previously showed that activation of cAMP-PKA pathway alleviated podocyte injury possibly via inhibiting Notch3 expression. However, the mechanisms are unknown. In the present study, Notch3 signaling was significantly activated in ADR-induced podocytes in vitro and in PAN nephrosis rats and patients with idiopathic FSGS in vivo, concomitantly with podocyte dedifferentiation. In cultured podocytes, pCPT-cAMP, a selective cAMP-PKA activator, dramatically blocked ADR-induced activation of Notch3 signaling as well as inhibition of cAMP-PKA pathway, thus alleviating the decreased cell viability and podocyte dedifferentiation. Bioinformatics analysis revealed EP300/CBP, a transcriptional co-activator, as a central hub for the crosstalk between these two signaling pathways. Additionally, CREB/KLF15 in cAMP-PKA pathway competed with RBP-J the major transcriptional factor of Notch3 signaling for binding to EP300/CBP. EP300/CBP siRNA significantly inhibited these two signaling transduction pathways and disrupted the interactions between the above major transcriptional factors. These data indicate a crucial role of EP300/CBP in regulating the crosstalk between cAMP-PKA pathway and Notch3 signaling and modulating the phenotypic change of podocytes, and enrich the reno-protective mechanisms of cAMP-PKA pathway.
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15
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Marquez-Exposito L, Rodrigues-Diez RR, Rayego-Mateos S, Fierro-Fernandez M, Rodrigues-Diez R, Orejudo M, Santos-Sanchez L, Blanco EM, Laborda J, Mezzano S, Lamas S, Lavoz C, Ruiz-Ortega M. Deletion of delta-like 1 homologue accelerates renal inflammation by modulating the Th17 immune response. FASEB J 2021; 35:e21213. [PMID: 33368614 DOI: 10.1096/fj.201903131r] [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] [Received: 12/23/2019] [Revised: 10/30/2020] [Accepted: 11/10/2020] [Indexed: 12/12/2022]
Abstract
Preclinical studies have demonstrated that activation of the NOTCH pathway plays a key role in the pathogenesis of kidney damage. There is currently no information on the role of the Delta-like homologue 1 (DLK1), a NOTCH inhibitor, in the regulation of renal damage. Here, we investigated the contribution of DLK1 to experimental renal damage and the underlying molecular mechanisms. Using a Dlk1-null mouse model in the experimental renal damage of unilateral ureteral obstruction, we found activation of NOTCH, as shown by increased nuclear translocation of the NOTCH1 intracellular domain, and upregulation of Dlk2/hey-1 expression compared to wild-type (WT) littermates. NOTCH1 over-activation in Dlk1-null injured kidneys was associated with a higher inflammatory response, characterized by infiltration of inflammatory cells, mainly CD4/IL17A + lymphocytes, and activation of the Th17 immune response. Furthermore, pharmacological NOTCH blockade inhibited the transcription factors controlling Th17 differentiation and gene expression of the Th17 effector cytokine IL-17A and other related-inflammatory factors, linked to a diminution of inflammation in the injured kidneys. We propose that the non-canonical NOTCH ligand DLK1 acts as a NOTCH antagonist in renal injury regulating the Th17-mediated inflammatory response.
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Affiliation(s)
- Laura Marquez-Exposito
- Cellular and Molecular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz. Universidad Autónoma de Madrid, Madrid, Spain.,Red de Investigación Renal (REDINREN), Madrid, Spain
| | - Raul R Rodrigues-Diez
- Cellular and Molecular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz. Universidad Autónoma de Madrid, Madrid, Spain.,Red de Investigación Renal (REDINREN), Madrid, Spain
| | - Sandra Rayego-Mateos
- Cellular and Molecular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz. Universidad Autónoma de Madrid, Madrid, Spain.,Vascular and Renal Translational Research Group, Institut de Recerca Biomèdica de Lleida IRBLleida, Lleida, Spain
| | | | - Raquel Rodrigues-Diez
- Departamento de Farmacología, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Macarena Orejudo
- Cellular and Molecular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz. Universidad Autónoma de Madrid, Madrid, Spain.,Red de Investigación Renal (REDINREN), Madrid, Spain
| | - Laura Santos-Sanchez
- Cellular and Molecular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz. Universidad Autónoma de Madrid, Madrid, Spain.,Red de Investigación Renal (REDINREN), Madrid, Spain
| | - Eva Maria Blanco
- Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Madrid, Spain
| | - Jorge Laborda
- Biochemistry and Molecular Biology Branch, Department of Inorganic and Organic Chemistry and Biochemistry, University of Castilla-La Mancha, Spanish National Research Council (CSIC), Albacete, Spain
| | - Sergio Mezzano
- Division of Nephrology, School of Medicine, Universidad Austral, Valdivia, Chile
| | - Santiago Lamas
- Centro de Biología Molecular "Severo Ochoa" (CSIC-UAM), Madrid, Spain
| | - Carolina Lavoz
- Division of Nephrology, School of Medicine, Universidad Austral, Valdivia, Chile
| | - Marta Ruiz-Ortega
- Cellular and Molecular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz. Universidad Autónoma de Madrid, Madrid, Spain.,Red de Investigación Renal (REDINREN), Madrid, Spain
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16
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Christopoulos PF, Gjølberg TT, Krüger S, Haraldsen G, Andersen JT, Sundlisæter E. Targeting the Notch Signaling Pathway in Chronic Inflammatory Diseases. Front Immunol 2021; 12:668207. [PMID: 33912195 PMCID: PMC8071949 DOI: 10.3389/fimmu.2021.668207] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 03/24/2021] [Indexed: 12/14/2022] Open
Abstract
The Notch signaling pathway regulates developmental cell-fate decisions and has recently also been linked to inflammatory diseases. Although therapies targeting Notch signaling in inflammation in theory are attractive, their design and implementation have proven difficult, at least partly due to the broad involvement of Notch signaling in regenerative and homeostatic processes. In this review, we summarize the supporting role of Notch signaling in various inflammation-driven diseases, and highlight efforts to intervene with this pathway by targeting Notch ligands and/or receptors with distinct therapeutic strategies, including antibody designs. We discuss this in light of lessons learned from Notch targeting in cancer treatment. Finally, we elaborate on the impact of individual Notch members in inflammation, which may lay the foundation for development of therapeutic strategies in chronic inflammatory diseases.
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Affiliation(s)
| | - Torleif T. Gjølberg
- Institute of Clinical Medicine and Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Centre for Eye Research and Department of Ophthalmology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Stig Krüger
- Department of Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Guttorm Haraldsen
- Department of Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Jan Terje Andersen
- Institute of Clinical Medicine and Department of Pharmacology, University of Oslo and Oslo University Hospital, Oslo, Norway
- Department of Immunology, University of Oslo and Oslo University Hospital, Oslo, Norway
| | - Eirik Sundlisæter
- Department of Pathology, University of Oslo and Oslo University Hospital, Oslo, Norway
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17
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Sharma M, Yerrathota S, Thornton MM, Gunewardena S. Transcriptomic data showing differentially expressed genes between Notch3 and Notch4 deleted mice. Data Brief 2021; 35:106873. [PMID: 33665264 PMCID: PMC7905437 DOI: 10.1016/j.dib.2021.106873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 11/28/2022] Open
Abstract
The Notch signaling pathway is an important conserved pathway for normal homeostasis during development. However, targeted deletion of Notch4 (Notch4d1 ) or Notch3 (Notch3d1 ) in mice is not lethal. In fact, both Notch4d1 and Notch3d1 mice develop normally and are fertile. Here we present RNA seq analysis of differential gene expression in the kidneys of Notch4d1 mice versus the Notch3 d1 mice, all on FVB background. Kidneys were collected from Notch4d1 and Notch3 d1 littermates at 3 months of age. RNA sequencing was carried out. The raw data were analyzed for differential gene expression using a negative binomial generalized linear model in the DeSeq2 software package. We used P-value ≤0.05 and an absolute fold change of 1.5 or greater to identify top upregulated and downregulated genes in Notch4 d1 mice compared to Notch3 d1 mice. The data provided will indentify targets of Notch3 and Notch4 signaling, specifically in kidney diseases where Notch3 or Notch4 are abberantly or redundantly expressed.
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Affiliation(s)
- Madhulika Sharma
- Departments of Internal Medicine, United States
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS, United States
| | - Sireesha Yerrathota
- Departments of Internal Medicine, United States
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS, United States
| | - Mackenzie M Thornton
- Departments of Internal Medicine, United States
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS, United States
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18
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Abed A, Leroyer AS, Kavvadas P, Authier F, Bachelier R, Foucault-Bertaud A, Bardin N, Cohen CD, Lindenmeyer MT, Genest M, Joshkon A, Jourde-Chiche N, Burtey S, Blot-Chabaud M, Dignat-George F, Chadjichristos CE. Endothelial-Specific Deletion of CD146 Protects Against Experimental Glomerulonephritis in Mice. Hypertension 2021; 77:1260-1272. [PMID: 33689459 DOI: 10.1161/hypertensionaha.119.14176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Ahmed Abed
- From the INSERM UMR-S1155, Tenon Hospital, Paris, France (A.A., P.K., F.A., M.G., C.E.C.).,Sorbonne Université, Paris, France (A.A., C.E.C.)
| | - Aurélie S Leroyer
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.)
| | - Panagiotis Kavvadas
- From the INSERM UMR-S1155, Tenon Hospital, Paris, France (A.A., P.K., F.A., M.G., C.E.C.)
| | - Florence Authier
- From the INSERM UMR-S1155, Tenon Hospital, Paris, France (A.A., P.K., F.A., M.G., C.E.C.)
| | - Richard Bachelier
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.)
| | - Alexandrine Foucault-Bertaud
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.)
| | - Nathalie Bardin
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.)
| | - Clemens D Cohen
- Nephrological Center, Medical Clinic and Policlinic IV, University of Munich, Germany (C.D.C.)
| | - Maja T Lindenmeyer
- Department of Medicine, University Medical Center Hamburg-Eppendorf, Germany (M.T.L.)
| | - Magali Genest
- From the INSERM UMR-S1155, Tenon Hospital, Paris, France (A.A., P.K., F.A., M.G., C.E.C.)
| | - Ahmad Joshkon
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.)
| | - Noémie Jourde-Chiche
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.).,Department of Nephrology, Aix-Marseille University, AP-HM Hôpital de la Conception, Marseille, France (N.J.-C., S.B.)
| | - Stéphane Burtey
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.).,Department of Nephrology, Aix-Marseille University, AP-HM Hôpital de la Conception, Marseille, France (N.J.-C., S.B.)
| | - Marcel Blot-Chabaud
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.)
| | - Françoise Dignat-George
- Aix-Marseille University, INSERM 1263, INRAE 1260, C2VN, France (A.S.L., R.B., A.F.-B., N.B., A.J., N.J.-C., S.B., M.B.-C., F.D.-G.)
| | - Christos E Chadjichristos
- From the INSERM UMR-S1155, Tenon Hospital, Paris, France (A.A., P.K., F.A., M.G., C.E.C.).,Sorbonne Université, Paris, France (A.A., C.E.C.)
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19
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Molecular Mechanisms of Renal Progenitor Regulation: How Many Pieces in the Puzzle? Cells 2021; 10:cells10010059. [PMID: 33401654 PMCID: PMC7823786 DOI: 10.3390/cells10010059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/26/2020] [Accepted: 12/29/2020] [Indexed: 12/12/2022] Open
Abstract
Kidneys of mice, rats and humans possess progenitors that maintain daily homeostasis and take part in endogenous regenerative processes following injury, owing to their capacity to proliferate and differentiate. In the glomerular and tubular compartments of the nephron, consistent studies demonstrated that well-characterized, distinct populations of progenitor cells, localized in the parietal epithelium of Bowman capsule and scattered in the proximal and distal tubules, could generate segment-specific cells in physiological conditions and following tissue injury. However, defective or abnormal regenerative responses of these progenitors can contribute to pathologic conditions. The molecular characteristics of renal progenitors have been extensively studied, revealing that numerous classical and evolutionarily conserved pathways, such as Notch or Wnt/β-catenin, play a major role in cell regulation. Others, such as retinoic acid, renin-angiotensin-aldosterone system, TLR2 (Toll-like receptor 2) and leptin, are also important in this process. In this review, we summarize the plethora of molecular mechanisms directing renal progenitor responses during homeostasis and following kidney injury. Finally, we will explore how single-cell RNA sequencing could bring the characterization of renal progenitors to the next level, while knowing their molecular signature is gaining relevance in the clinic.
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20
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The Role of Notch3 Signaling in Kidney Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1809408. [PMID: 33149805 PMCID: PMC7603621 DOI: 10.1155/2020/1809408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 08/28/2020] [Accepted: 10/04/2020] [Indexed: 12/17/2022]
Abstract
Notch receptors are transmembrane proteins that are members of the epidermal growth factor-like family. These receptors are widely expressed on the cell surface and are highly conserved. Binding to ligands on adjacent cells results in cleavage of these receptors, and their intracellular domains translocate into the nucleus, where target gene transcription is initiated. In the mammalian kidney, Notch receptors are activated during nephrogenesis and become silenced in the normal kidney after birth. Reactivation of Notch signaling in the adult kidney could be due to the genetic activation of Notch signaling or kidney injury. Notch3 is a mammalian heterodimeric transmembrane receptor in the Notch gene family. Notch3 activation is significantly increased in various glomerular diseases, renal tubulointerstitial diseases, glomerular sclerosis, and renal fibrosis and mediates disease occurrence and development. Here, we discuss numerous recently published papers describing the role of Notch3 signaling in kidney disease.
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21
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Brandt S, Ballhause TM, Bernhardt A, Becker A, Salaru D, Le-Deffge HM, Fehr A, Fu Y, Philipsen L, Djudjaj S, Müller AJ, Kramann R, Ibrahim M, Geffers R, Siebel C, Isermann B, Heidel FH, Lindquist JA, Mertens PR. Fibrosis and Immune Cell Infiltration Are Separate Events Regulated by Cell-Specific Receptor Notch3 Expression. J Am Soc Nephrol 2020; 31:2589-2608. [PMID: 32859670 DOI: 10.1681/asn.2019121289] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 07/12/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Kidney injuries that result in chronic inflammation initiate crosstalk between stressed resident cells and infiltrating immune cells. In animal models, whole-body receptor Notch3 deficiency protects from leukocyte infiltration and organ fibrosis. However, the relative contribution of Notch3 expression in tissue versus infiltrating immune cells is unknown. METHODS Chimeric mice deficient for Notch3 in hematopoietic cells and/or resident tissue cells were generated, and kidney fibrosis and inflammation after unilateral ureteral obstruction (UUO) were analyzed. Adoptive transfer of labeled bone marrow-derived cells validated the results in a murine Leishmania ear infection model. In vitro adhesion assays, integrin activation, and extracellular matrix production were analyzed. RESULTS Fibrosis follows UUO, but inflammatory cell infiltration mostly depends upon Notch3 expression in hematopoietic cells, which coincides with an enhanced proinflammatory milieu (e.g., CCL2 and CCL5 upregulation). Notch3 expression on CD45+ leukocytes plays a prominent role in efficient cell transmigration. Functionally, leukocyte adhesion and integrin activation are abrogated in the absence of receptor Notch3. Chimeric animal models also reveal that tubulointerstitial fibrosis develops, even in the absence of prominent leukocyte infiltrates after ureteral obstruction. Deleting Notch3 receptors on resident cells blunts kidney fibrosis, ablates NF-κB signaling, and lessens matrix deposition. CONCLUSIONS Cell-specific receptor Notch3 signaling independently orchestrates leukocyte infiltration and organ fibrosis. Interference with Notch3 signaling may present a novel therapeutic approach in inflammatory as well as fibrotic diseases.
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Affiliation(s)
- Sabine Brandt
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany
| | - Tobias M Ballhause
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Anja Bernhardt
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany
| | - Annika Becker
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Delia Salaru
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Hien Minh Le-Deffge
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Alexander Fehr
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany
| | - Yan Fu
- Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany.,Institute of Molecular and Clinical Immunology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Lars Philipsen
- Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany.,Institute of Molecular and Clinical Immunology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Sonja Djudjaj
- Institute of Pathology, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany
| | - Andreas J Müller
- Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany.,Institute of Molecular and Clinical Immunology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Intravital Microscopy of Infection and Immunity Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Rafael Kramann
- Department of Nephrology and Clinical Immunology, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany.,Department of Internal Medicine, Nephrology and Transplantation, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Mahmoud Ibrahim
- Department of Nephrology and Clinical Immunology, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany
| | - Robert Geffers
- Genome Analytics Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Chris Siebel
- Department of Discovery Oncology, Genentech, Inc., South San Francisco, California
| | - Berend Isermann
- Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany.,Institute of Clinical Chemistry and Pathobiochemistry, Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Florian H Heidel
- Department of Hematology and Oncology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Department of Internal Medicine II, Hematology and Oncology, Friedrich Schiller University Medical Center, Jena, Germany.,Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
| | - Jonathan A Lindquist
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany
| | - Peter R Mertens
- Clinic of Nephrology and Hypertension, Diabetes and Endocrinology, Otto-von-Guericke University Magdeburg, Magdeburg, Germany .,Health Campus Immunology, Infectiology and Inflammation (GCI3), Otto-von-Guericke University, Magdeburg, Germany
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22
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Puri RV, Yerrathota S, Home T, Idowu JY, Chakravarthi VP, Ward CJ, Singhal PC, Vanden Heuvel GB, Fields TA, Sharma M. Notch4 activation aggravates NF-κB-mediated inflammation in HIV-1-associated nephropathy. Dis Model Mech 2019; 12:dmm.040642. [PMID: 31727625 PMCID: PMC6918754 DOI: 10.1242/dmm.040642] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 11/06/2019] [Indexed: 12/14/2022] Open
Abstract
Notch pathway activation plays a central role in the pathogenesis of many glomerular diseases. We have previously shown that Notch4 expression was upregulated in various renal cells in human immunodeficiency virus (HIV)-associated nephropathy (HIVAN) patients and rodent models of HIVAN. In this study, we examined whether the Notch pathway can be distinctly activated by HIV-1 gene products and whether Notch4, in particular, can influence disease progression. Using luciferase reporter assays, we did not observe activation of the NOTCH4 promoter with the HIV protein Nef in podocytes. Further, we observed upregulated expression of a gamma secretase complex protein, presenilin 1, but not Notch4, in podocytes infected with an HIV-1 expression construct. To assess the effects of Notch4 on HIVAN disease progression, we engineered Tg26 mice with global deletion of the Notch4 intracellular domain (Notch4dl), which is required for signaling function. These mice (Notch4d1/Tg26+) showed a significant improvement in renal function and a significant decrease in mortality compared to Tg26 mice. Histological examination of kidneys showed that Notch4d1/Tg26+ mice had overall glomerular, tubulointerstitial injury and a marked decrease in interstitial inflammation. A significant decrease in the proliferating cells was observed in the tubulointerstitial compartments of Notch4d1/Tg26+ mice. Consistent with the diminished inflammation, kidneys from Notch4d1/Tg26+ mice also showed a significant decrease in expression of the inflammatory cytokine transcripts Il-6 and Ccl2, as well as the master inflammatory transcription factor NF-κB (Nfkb1 transcripts and p65 protein). These data identify Notch4 as an important mediator of tubulointerstitial injury and inflammation in HIVAN and a potential therapeutic target. Summary: Notch4 activation contributes to the inflammation seen in HIV-associated nephropathy (HIVAN), and inhibition of Notch4 ameliorates inflammation and prolongs life in a mouse model of HIVAN.
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Affiliation(s)
- Rajni Vaid Puri
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.,The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Sireesha Yerrathota
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.,The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Trisha Home
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.,The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Jessica Y Idowu
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.,The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - V Praveen Chakravarthi
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Christopher J Ward
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA.,The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Pravin C Singhal
- Institute of Molecular Medicine, Feinstein Institute for Medical Research and Zucker School of Medicine at Hofstra-Northwell, New York, NY 11549, USA
| | | | - Timothy A Fields
- The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA.,Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Madhulika Sharma
- Department of Internal Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA .,The Jared Grantham Kidney Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA
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23
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Wang XF, Zhang BH, Lu XQ, Wang RQ. DLX5 gene regulates the Notch signaling pathway to promote glomerulosclerosis and interstitial fibrosis in uremic rats. J Cell Physiol 2019; 234:21825-21837. [PMID: 31297803 DOI: 10.1002/jcp.28032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 11/30/2018] [Indexed: 01/31/2023]
Abstract
Uremia largely results from the accumulation of organic waste products normally cleared by the kidneys, which commonly accompanies kidney failure and chronic kidney disease. However, genetic investigations in a uremia remain largely unclear. This study aimed to determine the expression patterns of distal-less homeobox 5 (DLX5) in uremia rat model and further to study its effects on glomerulosclerosis and interstitial fibrosis. Uremic expression chip was applied to screen differentially expressed genes in uremia. Next, we used small interfering RNA-mediated RNA interference to specifically silence DLX5 in experimental uremic rats to understand the regulatory mechanism of DLX5. To understand effect of Notch1 signaling pathway in uremia, we also treated experimental uremic rats with γ-secretase inhibitor (GSI), an inhibitor of Notch1 signaling pathway. The expression of fibronectin (FN), laminin (LN), transforming growth factor-β1 (TGF-β1), Hes1, Hes5, and Jagged2 was determined. The semiquantitative assessment was applied to verify the effects of DLX5 on glomerulosclerosis. In the uremic expression chip, we found that DLX5 was upregulated in uremia samples, and considered to regulate the Notch signaling pathway. We found that small interfering RNA-mediated DLX5 inhibition or Notch1 signaling pathway inhibitory treatment relieved and delayed the kidney injury and glomerulosclerosis in uremia. Meanwhile, inhibition of DLX5 or Nothch1 signaling pathway reduced expression of FN, LN, Nothch1, TGF-β1, Hes1, Hes5, and Jagged2. Intriguingly, we discovered that Notch1 signaling pathway was inhibited after silencing DLX5. In conclusion, these findings highlight that DLX5 regulates Notch signaling, which may, in turn, promote complications of uremia such as kidney fibrosis, providing a novel therapeutic target for treating uremia.
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Affiliation(s)
- Xin-Fang Wang
- Department of Blood Purification, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Bei-Hao Zhang
- Department of Blood Purification, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Xiao-Qing Lu
- Department of Blood Purification, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Rui-Qiang Wang
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
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24
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Cassis P, Zoja C, Perico L, Remuzzi G. A preclinical overview of emerging therapeutic targets for glomerular diseases. Expert Opin Ther Targets 2019; 23:593-606. [PMID: 31150308 DOI: 10.1080/14728222.2019.1626827] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Animal models have provided significant insights into the mechanisms responsible for the development of glomerular lesions and proteinuria; they have also helped to identify molecules that control the podocyte function as suitable target-specific therapeutics. Areas covered: We discuss putative therapeutic targets for proteinuric glomerular diseases. An exhaustive search for eligible studies was performed in PubMed/MEDLINE. Most of the selected reports were published in the last decade, but we did not exclude older relevant milestone publications. We consider the molecules that regulate podocyte cytoskeletal dynamics and the transcription factors that regulate the expression of slit-diaphragm proteins. There is a focus on SGLT2 and sirtuins which have recently emerged as mediators of podocyte injury and repair. We also examine paracrine signallings involved in the cross-talk of injured podocytes with the neighbouring glomerular endothelial cells and parietal epithelial cells. Expert opinion: There is a need to discover novel therapeutic moleecules with renoprotective effects for those patients with glomerular diseases who do not respond completely to standard therapy. Emerging strategies targeting components of the podocyte cytoskeleton or signallings that regulate cellular communication within the glomerulus are promising avenues for treating glomerular diseases.
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Affiliation(s)
- Paola Cassis
- a Department of Molecular Medicine , Istituto di Ricerche Farmacologiche Mario Negri IRCCS,Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso , Bergamo , Italy
| | - Carlamaria Zoja
- a Department of Molecular Medicine , Istituto di Ricerche Farmacologiche Mario Negri IRCCS,Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso , Bergamo , Italy
| | - Luca Perico
- a Department of Molecular Medicine , Istituto di Ricerche Farmacologiche Mario Negri IRCCS,Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso , Bergamo , Italy
| | - Giuseppe Remuzzi
- a Department of Molecular Medicine , Istituto di Ricerche Farmacologiche Mario Negri IRCCS,Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso , Bergamo , Italy.,b 'L. Sacco' Department of Biomedical and Clinical Sciences , University of Milan , Milan , Italy
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25
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Miao D, Ma TT, Chen M, Zhao MH. Platelets release proinflammatory microparticles in anti-neutrophil cytoplasmic antibody-associated vasculitis. Rheumatology (Oxford) 2019; 58:kez044. [PMID: 30843591 DOI: 10.1093/rheumatology/kez044] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 01/09/2019] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES The biological functions of the platelets contributing to ANCA-associated vasculitis (AAV) are largely unclear. The current study aimed to investigate the potential role of platelet-derived microparticles (PMPs) in AAV. METHODS In the current study, microparticles in AAV patients were analysed by flow cytometry, and PMPs were probed for relative levels of 640 bioactive proteins secreted from patients' platelets using antibody microarrays. These data were then correlated with clinical and pathological parameters. RESULTS PMPs were significantly increased in 69 AAV patients, predominantly MPO-ANCA positive patients in active stage compared with in remission [4406.8/μl (2135.4, 5485.0) vs 549.7/μl (350, 708.5), P < 0.0001], and 43% of microparticles in active AAV were PMPs. Compared with 15 patients in remission, highly expressed proinflammatory molecules in the microparticles from platelets in 15 AAV patients in active stage revealed that potential functions of PMPs were promotion of the effect of chemotaxis, adhesion, growth and apoptosis (all the patients for array analysis were MPO-ANCA positive). The level of PMPs had a significant association with disease activity, inflammation, and renal damage. CONCLUSION PMPs may serve as inflammatory propagators through their wide production of proinflammatory cytokines in AAV, potentially providing a novel therapeutic target.
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Affiliation(s)
- Di Miao
- Renal Division, Peking University First Hospital, Institute of Nephrology, Peking University
- Key Laboratory of Renal Disease, Ministry of Health of China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China
- Academy for Advanced Interdisciplinary Studies, Peking University
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Tian-Tian Ma
- Renal Division, Peking University First Hospital, Institute of Nephrology, Peking University
- Key Laboratory of Renal Disease, Ministry of Health of China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China
| | - Min Chen
- Renal Division, Peking University First Hospital, Institute of Nephrology, Peking University
- Key Laboratory of Renal Disease, Ministry of Health of China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China
| | - Ming-Hui Zhao
- Renal Division, Peking University First Hospital, Institute of Nephrology, Peking University
- Key Laboratory of Renal Disease, Ministry of Health of China
- Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education of China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
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26
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Gera S, Dighe RR. The soluble ligand Y box-1 activates Notch3 receptor by binding to epidermal growth factor like repeats 20-23. Arch Biochem Biophys 2018; 660:129-136. [PMID: 30321499 DOI: 10.1016/j.abb.2018.10.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 09/14/2018] [Accepted: 10/11/2018] [Indexed: 12/15/2022]
Abstract
The transduction of signal by the Notch receptors to the intracellular domain is highly regulated and relies on binding of the ligands to the Epidermal growth factor Like Repeats (ELRs) of receptor's extracellular domain. Both canonical and non-canonical ligands are known to interact with different ELRs and activate Notch receptors. The aim of this study was to investigate the interaction of a soluble non-canonical ligand, Y box-1 (Yb-1) with Notch3 receptor ELRs. Polyclonal antibodies were employed as novel tools to identify the binding site of this ligand. Using various ligand binding and signaling assays, soluble Yb-1 was found to interact specifically with the Notch3 receptor, but not with Notch1. The ELRs 17-24 of Notch3 were identified as the binding site for Yb-1. Further, Yb-1 and Notch3 ELRs 17-24 structures were modelled and the Yb-1-Notch3 interaction interface was predicted to be Notch3 ELRs 20-23. Binding of the Yb-1 with Notch3 ELRs different from those reported for canonical DSL ligands also transduced the signal to the intracellular domain through the negative regulatory region. In conclusion, study highlights the importance of molecular modifications in different Notch3 ELRs for the transduction of signal to the negative regulatory region.
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Affiliation(s)
- Sakshi Gera
- Department of Molecular Reproduction Development and Genetics, Indian Institute of Science, Bangalore, 560012, India
| | - Rajan R Dighe
- Department of Molecular Reproduction Development and Genetics, Indian Institute of Science, Bangalore, 560012, India.
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27
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Huang M, Zhang J, Xu H, Ding T, Tang D, Yuan Q, Tao L, Ye Z. The TGFβ-ERK pathway contributes to Notch3 upregulation in the renal tubular epithelial cells of patients with obstructive nephropathy. Cell Signal 2018; 51:139-151. [PMID: 30081092 DOI: 10.1016/j.cellsig.2018.08.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 01/01/2023]
Abstract
Renal interstitial fibrosis is a common renal injury resulted from a variety of chronic kidney conditions and an array of factors. We report here that Notch3 is a potential contributor. In comparison to 6 healthy individuals, a robust elevation of Notch3 expression was observed in the renal tubular epithelial cells of 18 patients with obstructive nephropathy. In a rat unilateral ureteral obstruction (UUO) model which mimics the human disease, Notch3 upregulation closely followed the course of renal injury, renal fibrosis, TGFβ expression, and alpha-smooth muscle actin (α-SMA) expression, suggesting a role of Notch3 in promoting tubulointerstitial fibrosis. This possibility was supported by the observation that TGFβ, the major renal fibrogenic cytokine, stimulated Notch3 expression in human proximal tubule epithelial HK-2 cells. TGFβ enhanced the activation of ERK, p38, but not JNK MAP kinases in HK-2 cells. While inhibition of p38 activation using SB203580 did not affect TGFβ-induced Notch3 expression, inhibition of ERK activation with a MEK1 inhibitor PD98059 dramatically reduced the event. Furthermore, enforced ERK activation through overexpression of the constitutively active MEK1 mutant MEK1Q56P upregulated Notch3 expression in HK-2 cells, and PD98059 reduced ERK activation and Notch3 expression in HK-2 cells expressing MEK1Q56P. Collectively, we provide the first clinical evidence for Notch3 upregulation in patients with obstructive nephropathy; the upregulation is likely mediated through the TGFβ-ERK pathway. This study suggests that Notch3 upregulation contributes to renal injury caused by obstructive nephropathy, which could be prevented or delayed through ERK inhibition.
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Affiliation(s)
- Mei Huang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jin Zhang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; Department of Nephrology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, China
| | - Hui Xu
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China.
| | - Ting Ding
- Department of Nephrology, The Second Affiliated Hospital of University of South China, Hengyang, Hunan 421001, China
| | - Damu Tang
- Division of Nephrology, Department of Medicine, McMaster University, Canada; The Hamilton Center for Kidney Research, St. Joseph's Hospital, Hamilton, Ontario, Canada
| | - Qiongjing Yuan
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Lijian Tao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China; State Key Laboratory of Medical Genetics of China, Central South University, Changsha, Hunan 410008, China
| | - Zunlong Ye
- 1717 Class, ChangJun High School of Changsha, Changsha, Hunan 410002, China
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28
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Rizou M, Frangou EA, Marineli F, Prakoura N, Zoidakis J, Gakiopoulou H, Liapis G, Kavvadas P, Chatziantoniou C, Makridakis M, Vlahou A, Boletis J, Vlahakos D, Goumenos D, Daphnis E, Iatrou C, Charonis AS. The family of 14-3-3 proteins and specifically 14-3-3σ are up-regulated during the development of renal pathologies. J Cell Mol Med 2018; 22:4139-4149. [PMID: 29956451 PMCID: PMC6111864 DOI: 10.1111/jcmm.13691] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/19/2018] [Indexed: 12/16/2022] Open
Abstract
Chronic kidney disease, the end result of most renal and some systemic diseases, is a common condition where renal function is compromised due to fibrosis. During renal fibrosis, calreticulin, a multifunctional chaperone of the endoplasmic reticulum (ER) is up‐regulated in tubular epithelial cells (TECs) both in vitro and in vivo. Proteomic analysis of cultured TECs overexpressing calreticulin led to the identification of the family of 14‐3‐3 proteins as key proteins overexpressed as well. Furthermore, an increased expression in the majority of 14‐3‐3 family members was observed in 3 different animal models of renal pathologies: the unilateral ureteric obstruction, the nephrotoxic serum administration and the ischaemia‐reperfusion. In all these models, the 14‐3‐3σ isoform (also known as stratifin) was predominantly overexpressed. As in all these models ischaemia is a common denominator, we showed that the ischaemia‐induced transcription factor HIF1α is specifically associated with the promoter region of the 14‐3‐3σ gene. Finally, we evaluated the expression of the family of 14‐3‐3 proteins and specifically 14‐3‐3σ in biopsies from IgA nephropathy and membranous nephropathy patients. These results propose an involvement of 14‐3‐3σ in renal pathology and provide evidence for the first time that hypoxia may be responsible for its altered expression.
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Affiliation(s)
- Myrto Rizou
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Eleni A Frangou
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Filio Marineli
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Niki Prakoura
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece.,Laikon University Hospital, Nephrology Clinic, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Jerome Zoidakis
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Harikleia Gakiopoulou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, and Laikon Hospital, Athens, Greece
| | - George Liapis
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, and Laikon Hospital, Athens, Greece
| | | | | | | | - Antonia Vlahou
- Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - John Boletis
- Laikon University Hospital, Nephrology Clinic, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Demetrios Vlahakos
- Division of Nephrology, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece
| | - Dimitrios Goumenos
- Department of Nephrology, Medical School of Patras, University Hospital of Patras, Rio, Greece
| | - Evgenios Daphnis
- Medical School of the University of Crete, University Hospital of Iraklion, Iraklion, Greece
| | - Christos Iatrou
- Center for Nephrology "G. Papadakis", General Hospital of Nikaia-Piraeus, Athens, Greece
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29
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Notch3 orchestrates epithelial and inflammatory responses to promote acute kidney injury. Kidney Int 2018; 94:126-138. [PMID: 29751972 DOI: 10.1016/j.kint.2018.01.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 01/11/2018] [Accepted: 01/18/2018] [Indexed: 12/20/2022]
Abstract
Acute kidney injury is a major risk factor for subsequent chronic renal and/or cardiovascular complications. Previous studies have shown that Notch3 was de novo expressed in the injured renal epithelium in the early phases of chronic kidney disease. Here we examined whether Notch3 is involved in the inflammatory response and the epithelial cell damage that typifies ischemic kidneys using Notch3 knockout mice and mice with short-term activated Notch3 signaling (N3ICD) in renal epithelial cells. After ischemia/reperfusion, N3ICD mice showed exacerbated infiltration of inflammatory cells and severe tubular damage compared to control mice. Inversely, Notch3 knockout mice were protected against ischemia/reperfusion injury. Renal macrophages derived from Notch3 knockout mice failed to activate proinflammatory cytokines. Chromatin immunoprecipitation analysis of the Notch3 promoter identified NF-κB as the principal inducer of Notch3 in ischemia/reperfusion. Thus, Notch3 induced by NF-κB in the injured epithelium sustains a proinflammatory environment attracting activated macrophages to the site of injury leading to a rapid deterioration of renal function and structure. Hence, targeting Notch3 may provide a novel therapeutic strategy against ischemia/reperfusion and acute kidney injury by preservation of epithelial structure and disruption of proinflammatory signaling.
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30
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Aberrant Regulation of Notch3 Signaling Pathway in Polycystic Kidney Disease. Sci Rep 2018; 8:3340. [PMID: 29463793 PMCID: PMC5820265 DOI: 10.1038/s41598-018-21132-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 01/30/2018] [Indexed: 12/12/2022] Open
Abstract
Polycystic kidney disease (PKD) is a genetic disorder characterized by fluid-filled cysts in the kidney and liver that ultimately leads to end-stage renal disease. Currently there is no globally approved therapy for PKD. The Notch signaling pathway regulates cellular processes such as proliferation and de-differentiation, which are cellular hallmarks of PKD. Thus we hypothesized that the Notch pathway plays a critical role in PKD. Evaluation of protein expression of Notch signaling components in kidneys of Autosomal Recessive PKD (ARPKD) and Autosomal Dominant PKD (ADPKD) mouse models and of ADPKD patients revealed that Notch pathway members, particularly Notch3, were consistently upregulated or activated in cyst-lining epithelial cells. Notch3 expression correlated with rapidly growing cysts and co-localized with the proliferation marker, PCNA. Importantly, Notch inhibition significantly decreased forskolin-induced Notch3 activation and proliferation of primary human ADPKD cells, and significantly reduced cyst formation and growth of human ADPKD cells cultured in collagen gels. Thus our data indicate that Notch3 is aberrantly activated and facilitates epithelial cell proliferation in PKD, and that inhibition of Notch signaling may prevent cyst formation and growth.
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31
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Prakoura N, Kavvadas P, Kormann R, Dussaule JC, Chadjichristos CE, Chatziantoniou C. NF κB-Induced Periostin Activates Integrin- β3 Signaling to Promote Renal Injury in GN. J Am Soc Nephrol 2016; 28:1475-1490. [PMID: 27920156 DOI: 10.1681/asn.2016070709] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 10/31/2016] [Indexed: 12/31/2022] Open
Abstract
De novo expression in the kidney of periostin, a protein involved in odontogenesis and osteogenesis, has been suggested as a biomarker of renal disease. In this study, we investigated the mechanism(s) of induction and the role of periostin in renal disease. Using a combination of bioinformatics, reporter assay, and chromatin immunoprecipitation analyses, we found that NFκB and other proinflammatory transcription factors induce periostin expression in vitro and that binding of these factors on the periostin promoter is enriched in glomeruli during experimental GN. Mice lacking expression of periostin displayed preserved renal function and structure during GN. Furthermore, delayed administration of periostin antisense oligonucleotides in wild-type animals with GN reversed already established proteinuria, diminished tissue inflammation, and improved renal structure. Lack of periostin expression also blunted the de novo renal expression of integrin-β3 and phosphorylation of focal adhesion kinase and AKT, known mediators of integrin-β3 signaling that affect cell motility and survival, observed during GN in wild-type animals. In vitro, recombinant periostin increased the expression of integrin-β3 and the concomitant phosphorylation of focal adhesion kinase and AKT in podocytes. Notably, periostin and integrin-β3 were highly colocalized in biopsy specimens from patients with inflammatory GN. These results demonstrate that interplay between periostin and renal inflammation orchestrates inflammatory and fibrotic responses, driving podocyte damage through downstream activation of integrin-β3 signaling. Targeting periostin may be a novel therapeutic strategy for treating CKD.
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Affiliation(s)
- Niki Prakoura
- Institut National de la Santé Et de la Recherche Médicale, Unité Mixte de Recherche Scientifique 1155, Tenon Hospital, Paris, France
| | - Panagiotis Kavvadas
- Institut National de la Santé Et de la Recherche Médicale, Unité Mixte de Recherche Scientifique 1155, Tenon Hospital, Paris, France
| | - Raphaёl Kormann
- Institut National de la Santé Et de la Recherche Médicale, Unité Mixte de Recherche Scientifique 1155, Tenon Hospital, Paris, France.,Sorbonne Université, Université Pierre-et-Marie-Curie Paris 6, Paris, France; and
| | - Jean-Claude Dussaule
- Institut National de la Santé Et de la Recherche Médicale, Unité Mixte de Recherche Scientifique 1155, Tenon Hospital, Paris, France.,Sorbonne Université, Université Pierre-et-Marie-Curie Paris 6, Paris, France; and.,Department of Physiology, Saint-Antoine Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Christos E Chadjichristos
- Institut National de la Santé Et de la Recherche Médicale, Unité Mixte de Recherche Scientifique 1155, Tenon Hospital, Paris, France.,Sorbonne Université, Université Pierre-et-Marie-Curie Paris 6, Paris, France; and
| | - Christos Chatziantoniou
- Institut National de la Santé Et de la Recherche Médicale, Unité Mixte de Recherche Scientifique 1155, Tenon Hospital, Paris, France; .,Sorbonne Université, Université Pierre-et-Marie-Curie Paris 6, Paris, France; and
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Dou XW, Park W, Lee S, Zhang QZ, Carrasco LR, Le AD. Loss of Notch3 Signaling Enhances Osteogenesis of Mesenchymal Stem Cells from Mandibular Torus. J Dent Res 2016; 96:347-354. [PMID: 27879421 DOI: 10.1177/0022034516680349] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Mandibular torus (MT) is a common intraoral osseous outgrowth located on the lingual surface of the mandible. Histologic features include hyperplastic bone consisting of mature cortical and trabecular bone. Some theories on the etiology of MT have been postulated, such as genetic factors, masticatory hyperfunction, trauma, and continued growth, but the underlying mechanism remains largely unknown. In this study, we investigated the potential role of mesenchymal stem cells (MSCs) derived from human MT in the pathogenesis of bone outgrowth. We demonstrated that MT harbored a distinct subpopulation of MSCs, with enhanced osteogenic and decreased adipogenic differentiation capacities, as compared with their counterparts from normal jaw bone. The increased osteogenic differentiation of mandibular torus MSCs was associated with the suppression of Notch3 signaling and its downstream target genes, Jag1 and Hey1, and a reciprocal increase in the transcriptional activation of ATF4 and NFATc1 genes. Targeted knockdown of Notch3 expression by transient siRNA transfection promoted the expression of osteogenic transcription factors in normal jaw bone MSCs. Our data suggest that the loss of Notch3 signaling may contribute partly to bone outgrowth in MT, as mediated by enhanced MSC-driven osteogenic differentiation in the jaw bone.
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Affiliation(s)
- X W Dou
- 1 Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - W Park
- 1 Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA.,2 Department of Advanced General Dentistry, College of Dentistry, Yonsei University, Seoul, South Korea
| | - S Lee
- 3 Department of Endodontics, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - Q Z Zhang
- 1 Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
| | - L R Carrasco
- 1 Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA.,4 Department of Oral and Maxillofacial Surgery, Penn Medicine Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - A D Le
- 1 Department of Oral and Maxillofacial Surgery and Pharmacology, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA.,4 Department of Oral and Maxillofacial Surgery, Penn Medicine Hospital of the University of Pennsylvania, Philadelphia, PA, USA
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Succar L, Boadle RA, Harris DC, Rangan GK. Formation of tight junctions between neighboring podocytes is an early ultrastructural feature in experimental crescentic glomerulonephritis. Int J Nephrol Renovasc Dis 2016; 9:297-312. [PMID: 27920570 PMCID: PMC5126005 DOI: 10.2147/ijnrd.s113071] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Purpose In crescentic glomerulonephritis (CGN), the development of cellular bridges between podocytes and parietal epithelial cells (PECs) triggers glomerular crescent formation. However, the sequential changes in glomerular ultrastructure in CGN are not well defined. This study investigated the time course of glomerular ultrastructure in experimental CGN. Methods Transmission electron microscopy (TEM) was performed using kidney samples from rats with nephrotoxic serum nephritis (NSN) from day 1 to day 14. Morphometric analysis was conducted on randomly selected glomeruli captured on TEM digital images. Results On day 1 of NSN, there was widespread formation of focal contacts between the cell bodies of neighboring podocytes, and tight junctions were evident at the site of cell-to-cell contact. This was confirmed by the increased expression of the tight junction molecule, zonula occludens-1 (ZO-1), which localized to the points of podocyte cell–cell body contact. On day 2, the interpodocyte distance decreased and the glomerular basement membrane thickness increased. Foot process effacement (FPE) was segmental on day 3 and diffuse by day 5, accompanied by the formation of podocyte cellular bridges with Bowman’s capsule, as confirmed by a decrease in podocyte-to-PEC distance. Fibrinoid necrosis and cellular crescents were evident in all glomeruli by days 7 and 14. In vitro, the exposure of podocytes to macrophage-conditioned media altered cellular morphology and caused an intracellular redistribution of ZO-1. Conclusion The formation of tight junctions between podocytes is an early ultrastructural abnormality in CGN, preceding FPE and podocyte bridge formation and occurring in response to inflammatory injury. Podocyte-to-podocyte tight junction formation may be a compensatory mechanism to maintain the integrity of the glomerular filtration barrier following severe endocapillary injury.
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Affiliation(s)
- Lena Succar
- Centre for Transplant and Renal Research, The Westmead Institute for Medical Research, The University of Sydney
| | - Ross A Boadle
- Electron Microscopy Laboratory, Institute of Clinical Pathology and Medical Research, Westmead Hospital
| | - David C Harris
- Centre for Transplant and Renal Research, The Westmead Institute for Medical Research, The University of Sydney; Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Westmead, Sydney, NSW, Australia
| | - Gopala K Rangan
- Centre for Transplant and Renal Research, The Westmead Institute for Medical Research, The University of Sydney; Department of Renal Medicine, Westmead Hospital, Western Sydney Local Health District, Westmead, Sydney, NSW, Australia
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Valiño-Rivas L, Gonzalez-Lafuente L, Sanz AB, Ruiz-Ortega M, Ortiz A, Sanchez-Niño MD. Non-canonical NFκB activation promotes chemokine expression in podocytes. Sci Rep 2016; 6:28857. [PMID: 27353019 PMCID: PMC4926283 DOI: 10.1038/srep28857] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 06/10/2016] [Indexed: 12/13/2022] Open
Abstract
TNF-like weak inducer of apoptosis (TWEAK) receptor Fn14 is expressed by podocytes and Fn14 deficiency protects from experimental proteinuric kidney disease. However, the downstream effectors of TWEAK/Fn14 in podocytes are poorly characterized. We have explored TWEAK activation of non-canonical NFκB signaling in cultured podocytes. In cultured podocytes, TWEAK increased the expression of the chemokines CCL21, CCL19 and RANTES in a time-dependent manner. The inhibitor of canonical NFκB activation parthenolide inhibited the CCL19 and the early RANTES responses, but not the CCL21 or late RANTES responses. In this regard, TWEAK induced non-canonical NFκB activation in podocytes, characterized by NFκB2/p100 processing to NFκB2/p52 and nuclear migration of RelB/p52. Silencing by a specific siRNA of NIK, the upstream kinase of the non-canonical NFκB pathway, prevented CCL21 upregulation but did not modulate CCL19 or RANTES expression in response to TWEAK, thus establishing CCL21 as a non-canonical NFκB target in podocytes. Increased kidney Fn14 and CCL21 expression was also observed in rat proteinuric kidney disease induced by puromycin, and was localized to podocytes. In conclusion, TWEAK activates the non-canonical NFκB pathway in podocytes, leading to upregulation of CCL21 expression. The non-canonical NFκB pathway should be explored as a potential therapeutic target in proteinuric kidney disease.
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Affiliation(s)
- Lara Valiño-Rivas
- IIS-Fundación Jiménez Díaz-Universidad Autónoma de Madrid and Fundación Renal Iñigo Alvarez de Toledo-IRSIN, Madrid, Spain.,REDINREN, Madrid, Spain
| | - Laura Gonzalez-Lafuente
- IIS-Fundación Jiménez Díaz-Universidad Autónoma de Madrid and Fundación Renal Iñigo Alvarez de Toledo-IRSIN, Madrid, Spain.,REDINREN, Madrid, Spain
| | - Ana B Sanz
- IIS-Fundación Jiménez Díaz-Universidad Autónoma de Madrid and Fundación Renal Iñigo Alvarez de Toledo-IRSIN, Madrid, Spain.,REDINREN, Madrid, Spain
| | - Marta Ruiz-Ortega
- IIS-Fundación Jiménez Díaz-Universidad Autónoma de Madrid and Fundación Renal Iñigo Alvarez de Toledo-IRSIN, Madrid, Spain.,REDINREN, Madrid, Spain
| | - Alberto Ortiz
- IIS-Fundación Jiménez Díaz-Universidad Autónoma de Madrid and Fundación Renal Iñigo Alvarez de Toledo-IRSIN, Madrid, Spain.,REDINREN, Madrid, Spain
| | - Maria D Sanchez-Niño
- IIS-Fundación Jiménez Díaz-Universidad Autónoma de Madrid and Fundación Renal Iñigo Alvarez de Toledo-IRSIN, Madrid, Spain.,REDINREN, Madrid, Spain
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Ragot H, Monfort A, Baudet M, Azibani F, Fazal L, Merval R, Polidano E, Cohen-Solal A, Delcayre C, Vodovar N, Chatziantoniou C, Samuel JL. Loss of Notch3 Signaling in Vascular Smooth Muscle Cells Promotes Severe Heart Failure Upon Hypertension. Hypertension 2016; 68:392-400. [PMID: 27296994 DOI: 10.1161/hypertensionaha.116.07694] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 05/10/2016] [Indexed: 12/28/2022]
Abstract
Hypertension, which is a risk factor of heart failure, provokes adaptive changes at the vasculature and cardiac levels. Notch3 signaling plays an important role in resistance arteries by controlling the maturation of vascular smooth muscle cells. Notch3 deletion is protective in pulmonary hypertension while deleterious in arterial hypertension. Although this latter phenotype was attributed to renal and cardiac alterations, the underlying mechanisms remained unknown. To investigate the role of Notch3 signaling in the cardiac adaptation to hypertension, we used mice with either constitutive Notch3 or smooth muscle cell-specific conditional RBPJκ knockout. At baseline, both genotypes exhibited a cardiac arteriolar rarefaction associated with oxidative stress. In response to angiotensin II-induced hypertension, the heart of Notch3 knockout and SM-RBPJκ knockout mice did not adapt to pressure overload and developed heart failure, which could lead to an early and fatal acute decompensation of heart failure. This cardiac maladaptation was characterized by an absence of media hypertrophy of the media arteries, the transition of smooth muscle cells toward a synthetic phenotype, and an alteration of angiogenic pathways. A subset of mice exhibited an early fatal acute decompensated heart failure, in which the same alterations were observed, although in a more rapid timeframe. Altogether, these observations indicate that Notch3 plays a major role in coronary adaptation to pressure overload. These data also show that the hypertrophy of coronary arterial media on pressure overload is mandatory to initially maintain a normal cardiac function and is regulated by the Notch3/RBPJκ pathway.
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Affiliation(s)
- Hélène Ragot
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Astrid Monfort
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Mathilde Baudet
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Fériel Azibani
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Loubina Fazal
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Régine Merval
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Evelyne Polidano
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Alain Cohen-Solal
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Claude Delcayre
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Nicolas Vodovar
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Christos Chatziantoniou
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.)
| | - Jane-Lise Samuel
- From the Inserm UMR-S 942 and Paris Diderot University, Paris, France (H.R., A.M., M.B., F.A., L.F., R.M., E.P., A.C.-S., C.D., N.V., J.-L.S.); Department of Cardiology, Lariboisière Hospital, Paris, France (A.C.-S.); and Inserm UMR-S 1155 and Pierre and Marie Curie University, Paris, France (C.C.).
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Delta-Like Ligand 4 Modulates Liver Damage by Down-Regulating Chemokine Expression. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:1874-1889. [PMID: 27171900 DOI: 10.1016/j.ajpath.2016.03.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 01/16/2016] [Accepted: 03/07/2016] [Indexed: 12/29/2022]
Abstract
Disrupting Notch signaling ameliorates experimental liver fibrosis. However, the role of individual Notch ligands in liver damage is unknown. We investigated the effects of Delta-like ligand 4 (Dll4) in liver disease. DLL4 expression was measured in 31 human liver tissues by immunohistochemistry. Dll4 function was examined in carbon tetrachloride- and bile duct ligation-challenged mouse models in vivo and evaluated in hepatic stellate cells, hepatocytes, and Kupffer cells in vitro. DLL4 was expressed in patients' Kupffer and liver sinusoidal endothelial cells. Recombinant Dll4 protein (rDll4) ameliorated hepatocyte apoptosis, inflammation, and fibrosis in mice after carbon tetrachloride challenge. In vitro, rDll4 significantly decreased lipopolysaccharide-dependent chemokine expression in both Kupffer and hepatic stellate cells. In bile duct ligation mice, rDll4 induced massive hepatic necrosis, resulting in the death of all animals within 1 week. Inflammatory cell infiltration and chemokine ligand 2 (Ccl2) expression were significantly reduced in rDll4-receiving bile duct ligation mice. Recombinant Ccl2 rescued bile duct ligation mice from rDll4-mediated death. In patients with acute-on-chronic liver failure, DLL4 expression was inversely associated with CCL2 abundance. Mechanistically, Dll4 regulated Ccl2 expression via NF-κB. Taken together, Dll4 modulates liver inflammatory response by down-regulating chemokine expression. rDll4 application results in opposing outcomes in two models of liver damage. Loss of DLL4 may be associated with CCL2-mediated cytokine storm in patients with acute-on-chronic liver failure.
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37
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Edeling M, Ragi G, Huang S, Pavenstädt H, Susztak K. Developmental signalling pathways in renal fibrosis: the roles of Notch, Wnt and Hedgehog. Nat Rev Nephrol 2016; 12:426-39. [PMID: 27140856 DOI: 10.1038/nrneph.2016.54] [Citation(s) in RCA: 279] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Kidney fibrosis is a common histological manifestation of functional decline in the kidney. Fibrosis is a reactive process that develops in response to excessive epithelial injury and inflammation, leading to myofibroblast activation and an accumulation of extracellular matrix. Here, we describe how three key developmental signalling pathways - Notch, Wnt and Hedgehog (Hh) - are reactivated in response to kidney injury and contribute to the fibrotic response. Although transient activation of these pathways is needed for repair of injured tissue, their sustained activation is thought to promote fibrosis. Excessive Wnt and Notch expression prohibit epithelial differentiation, whereas increased Wnt and Hh expression induce fibroblast proliferation and myofibroblastic transdifferentiation. Notch, Wnt and Hh are fundamentally different signalling pathways, but their choreographed activation seems to be just as important for fibrosis as it is for embryonic kidney development. Decreasing the activity of Notch, Wnt or Hh signalling could potentially provide a new therapeutic strategy to ameliorate the development of fibrosis in chronic kidney disease.
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Affiliation(s)
- Maria Edeling
- Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, 415 Curie Boulevard, 415 Clinical Research Building, Philadelphia, Pennsylvania 19104, USA.,Department of Molecular Nephrology, Internal Medicine D, University Hospital Albert-Schweitzer-Straße 33, Münster 48149, Germany
| | - Grace Ragi
- Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, 415 Curie Boulevard, 415 Clinical Research Building, Philadelphia, Pennsylvania 19104, USA
| | - Shizheng Huang
- Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, 415 Curie Boulevard, 415 Clinical Research Building, Philadelphia, Pennsylvania 19104, USA
| | - Hermann Pavenstädt
- Department of Molecular Nephrology, Internal Medicine D, University Hospital Albert-Schweitzer-Straße 33, Münster 48149, Germany
| | - Katalin Susztak
- Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, 415 Curie Boulevard, 415 Clinical Research Building, Philadelphia, Pennsylvania 19104, USA
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38
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Hu B, Phan SH. Notch in fibrosis and as a target of anti-fibrotic therapy. Pharmacol Res 2016; 108:57-64. [PMID: 27107790 DOI: 10.1016/j.phrs.2016.04.010] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 04/13/2016] [Indexed: 02/07/2023]
Abstract
The Notch pathway represents a highly conserved signaling network with essential roles in regulation of key cellular processes and functions, many of which are critical for development. Accumulating evidence indicates that it is also essential for fibrosis and thus the pathogenesis of chronic fibroproliferative diseases in diverse organs and tissues. Different effects of Notch activation are observed depending on cellular and tissue context as well as in both physiologic and pathologic states. Close interactions of Notch signaling pathway with other signaling pathways have been identified. In this review, current knowledge on the role of the Notch signaling with special focus on fibrosis and its potential as a therapeutic target is summarized.
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Affiliation(s)
- Biao Hu
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
| | - Sem H Phan
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
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39
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The role of Notch signaling in kidney podocytes. Clin Exp Nephrol 2016; 21:1-6. [DOI: 10.1007/s10157-016-1247-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 02/07/2016] [Indexed: 10/22/2022]
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40
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Abstract
Podocytes are highly specialized cells of the kidney glomerulus that wrap around capillaries and that neighbor cells of the Bowman’s capsule. When it comes to glomerular filtration, podocytes play an active role in preventing plasma proteins from entering the urinary ultrafiltrate by providing a barrier comprising filtration slits between foot processes, which in aggregate represent a dynamic network of cellular extensions. Foot processes interdigitate with foot processes from adjacent podocytes and form a network of narrow and rather uniform gaps. The fenestrated endothelial cells retain blood cells but permit passage of small solutes and an overlying basement membrane less permeable to macromolecules, in particular to albumin. The cytoskeletal dynamics and structural plasticity of podocytes as well as the signaling between each of these distinct layers are essential for an efficient glomerular filtration and thus for proper renal function. The genetic or acquired impairment of podocytes may lead to foot process effacement (podocyte fusion or retraction), a morphological hallmark of proteinuric renal diseases. Here, we briefly discuss aspects of a contemporary view of podocytes in glomerular filtration, the patterns of structural changes in podocytes associated with common glomerular diseases, and the current state of basic and clinical research.
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Affiliation(s)
- Jochen Reiser
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Mehmet M Altintas
- Department of Medicine, Rush University Medical Center, Chicago, IL, USA
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41
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Sweetwyne MT, Gruenwald A, Niranjan T, Nishinakamura R, Strobl LJ, Susztak K. Notch1 and Notch2 in Podocytes Play Differential Roles During Diabetic Nephropathy Development. Diabetes 2015; 64:4099-111. [PMID: 26293507 PMCID: PMC4657584 DOI: 10.2337/db15-0260] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 08/04/2015] [Indexed: 12/29/2022]
Abstract
Notch pathway activation in podocytes has been shown to play an important role in diabetic kidney disease (DKD) development; however, the receptors and ligands involved in the process have not been identified. Here, we report that conditional deletion of Notch1 in podocytes using NPHS2(cre)Notch1(flox/flox) animals resulted in marked amelioration of DKD. On the contrary, podocyte-specific genetic deletion of Notch2 had no effect on albuminuria and mesangial expansion. Notch1-null podocytes were protected from apoptosis and dedifferentiation in vitro, likely explaining the protective phenotype in vivo. Deletion of Notch1 in podocytes also resulted in an increase in Notch2 expression, indicating an interaction between the receptors. At the same time, transgenic overexpression of Notch2 in podocytes did not induce phenotypic changes, while constitutive expression of Notch1 caused rapid development of albuminuria and glomerulosclerosis. In summary, our studies indicate that Notch1 plays a distinct (nonredundant) role in podocytes during DKD development.
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MESH Headings
- Animals
- Apoptosis
- Biomarkers/metabolism
- Cell Dedifferentiation
- Cell Line, Transformed
- Cells, Cultured
- Crosses, Genetic
- Diabetic Nephropathies/metabolism
- Diabetic Nephropathies/pathology
- Diabetic Nephropathies/prevention & control
- Glomerular Mesangium/metabolism
- Glomerular Mesangium/pathology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Peptide Fragments/genetics
- Peptide Fragments/metabolism
- Podocytes/metabolism
- Podocytes/pathology
- Protein Interaction Domains and Motifs
- RNA, Messenger/metabolism
- Receptor, Notch1/chemistry
- Receptor, Notch1/genetics
- Receptor, Notch1/metabolism
- Receptor, Notch2/chemistry
- Receptor, Notch2/genetics
- Receptor, Notch2/metabolism
- Recombinant Proteins/chemistry
- Recombinant Proteins/metabolism
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Affiliation(s)
- Mariya T Sweetwyne
- Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Antje Gruenwald
- Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Thiruvur Niranjan
- Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Ryuichi Nishinakamura
- Department of Kidney Development, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Lothar J Strobl
- Department of Gene Vectors, Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
| | - Katalin Susztak
- Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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