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Zhang J, Wong MG, Wong M, Gross S, Chen J, Pollock C, Saad S. Correction: A Cationic-Independent Mannose 6-Phosphate Receptor Inhibitor (PXS64) Ameliorates Kidney Fibrosis by Inhibiting Activation of Transforming Growth Factor-β1. PLoS One 2022; 17:e0262725. [PMID: 35020773 PMCID: PMC8754332 DOI: 10.1371/journal.pone.0262725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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2
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Meng T, Chang H, Meng H. Exploring the mechanism of Shendi Bushen capsule in anti-renal fibrosis using metabolomics theory and network analysis. Mol Omics 2022; 18:873-883. [DOI: 10.1039/d2mo00141a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Shendi Bushen capsule (SDBS) is a Chinese patent medicine used for the treatment of renal fibrosis (RF).
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Affiliation(s)
- Tianwei Meng
- Graduate School, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang, 150036, China
| | - Hong Chang
- Department of Pharmacy, Baotou Medical College, Baotou, Inner Mongolia, 014040, China
| | - Hongyu Meng
- Department of Nephrology and Endocrinology, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100027, China
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3
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Tang PCT, Chan ASW, Zhang CB, García Córdoba CA, Zhang YY, To KF, Leung KT, Lan HY, Tang PMK. TGF-β1 Signaling: Immune Dynamics of Chronic Kidney Diseases. Front Med (Lausanne) 2021; 8:628519. [PMID: 33718407 PMCID: PMC7948440 DOI: 10.3389/fmed.2021.628519] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 01/21/2021] [Indexed: 12/13/2022] Open
Abstract
Chronic kidney disease (CKD) is a major cause of morbidity and mortality worldwide, imposing a great burden on the healthcare system. Regrettably, effective CKD therapeutic strategies are yet available due to their elusive pathogenic mechanisms. CKD is featured by progressive inflammation and fibrosis associated with immune cell dysfunction, leading to the formation of an inflammatory microenvironment, which ultimately exacerbating renal fibrosis. Transforming growth factor β1 (TGF-β1) is an indispensable immunoregulator promoting CKD progression by controlling the activation, proliferation, and apoptosis of immunocytes via both canonical and non-canonical pathways. More importantly, recent studies have uncovered a new mechanism of TGF-β1 for de novo generation of myofibroblast via macrophage-myofibroblast transition (MMT). This review will update the versatile roles of TGF-β signaling in the dynamics of renal immunity, a better understanding may facilitate the discovery of novel therapeutic strategies against CKD.
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Affiliation(s)
- Philip Chiu-Tsun Tang
- State Key Laboratory of Translational Oncology, Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Alex Siu-Wing Chan
- Department of Applied Social Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Cai-Bin Zhang
- State Key Laboratory of Translational Oncology, Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Cristina Alexandra García Córdoba
- State Key Laboratory of Translational Oncology, Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Ying-Ying Zhang
- Department of Nephrology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ka-Fai To
- State Key Laboratory of Translational Oncology, Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Kam-Tong Leung
- Department of Paediatrics, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Hui-Yao Lan
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong.,Guangdong-Hong Kong Joint Laboratory on Immunological and Genetic Kidney Diseases, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Patrick Ming-Kuen Tang
- State Key Laboratory of Translational Oncology, Department of Anatomical and Cellular Pathology, The Chinese University of Hong Kong, Shatin, Hong Kong
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4
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Sun M, Zhou W, Yao F, Song J, Xu Y, Deng Z, Diao H, Li S. MicroRNA-302b mitigates renal fibrosis via inhibiting TGF-β/Smad pathway activation. ACTA ACUST UNITED AC 2021; 54:e9206. [PMID: 33503202 PMCID: PMC7836400 DOI: 10.1590/1414-431x20209206] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 08/31/2020] [Indexed: 11/22/2022]
Abstract
Renal fibrosis is one of the most significant pathological changes after ureteral
obstruction. Transforming growth factor-β (TGF-β) signaling pathway plays
essential roles in kidney fibrosis regulation. The aims of the present study
were to investigate effects of microRNA-302b (miR-302b) on renal fibrosis, and
interaction between miR-302b and TGF-β signaling pathway in murine unilateral
ureteral obstruction (UUO) model. Microarray dataset GSE42716 was downloaded by
retrieving Gene Expression Omnibus database. In accordance with bioinformatics
analysis results, miR-302b was significantly down-regulated in UUO mouse kidney
tissue and TGF-β1-treated HK-2 cells. Masson's trichrome staining showed that
miR-302b mimics decreased renal fibrosis induced by UUO. The increased mRNA
expression of collagen I and α-smooth muscle actin (α-SMA) and decreased
expression of E-cadherin were reversed by miR-302b mimics. In addition, miR-302b
up-regulation also inhibited TGF-β1-induced epithelial mesenchymal transition
(EMT) of HK-2 cells by restoring E-cadherin expression and decreasing α-SMA
expression. miR-302b mimics suppressed both luciferase activity and protein
expression of TGF-βR2. However, miR-302b inhibitor increased TGF-βR2 luciferase
activity and protein expression. Meanwhile, miR-302b mimics inhibited TGF-βR2
mRNA expression and decreased Smad2 and Smad3 phosphorylation in
vivo and in vitro. Furthermore, over-expression of
TGF-βR2 restored the miR-302b-induced decrease of collagen I and α-SMA
expression. In conclusion, this study demonstrated that miR-302b attenuated
renal fibrosis by targeting TGF-βR2 to suppress TGF-β/Smad signaling activation.
Our findings showed that elevating renal miR-302b levels may be a novel
therapeutic strategy for preventing renal fibrosis.
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Affiliation(s)
- Mengkui Sun
- Department of Urology, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China.,Laboratory of Pelvic Floor Muscle Function, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China
| | - Wei Zhou
- Department of Urology, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China.,Laboratory of Pelvic Floor Muscle Function, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China
| | - Fei Yao
- Department of Urology, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China.,Laboratory of Pelvic Floor Muscle Function, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China
| | - Jianming Song
- Department of Pathology, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China
| | - Yanan Xu
- Department of Urology, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China.,Laboratory of Pelvic Floor Muscle Function, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China
| | - Zhimei Deng
- Department of Urology, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China.,Laboratory of Pelvic Floor Muscle Function, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China
| | - Hongwang Diao
- Department of Urology, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China.,Laboratory of Pelvic Floor Muscle Function, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China
| | - Shoulin Li
- Department of Urology, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China.,Laboratory of Pelvic Floor Muscle Function, Shenzhen Children's Hospital, Shenzhen, Guangdong Province, China
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5
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Armutcu F, Demircan K, Yildirim U, Namuslu M, Yagmurca M, Celik HT. Hypoxia causes important changes of extracellular matrix biomarkers and ADAMTS proteinases in the adriamycin-induced renal fibrosis model. Nephrology (Carlton) 2019; 24:863-875. [PMID: 30719800 DOI: 10.1111/nep.13572] [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] [Accepted: 01/30/2019] [Indexed: 12/12/2022]
Abstract
AIM Renal fibrosis is a common cause of renal dysfunction with chronic kidney diseases. This process is characterized by excessive production of extracellular matrix (ECM) or inhibition of ECM degradation. A disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS) proteinases, which are widely presented in mammals, have very critical roles in ECM remodelling. We aimed to study the role of ADAMTS proteinases and some of the ECM markers in the pathogenesis of renal fibrosis and to investigate the effects of hypoxia on these biomarkers. METHODS In addition to the control group, Adriamycin (ADR) treated rats were divided into four groups as ADR, sham and two hypoxia groups. Renal nephropathy was assessed biochemical assays, pathological and immunohistochemical staining methods. The expression of ADAMTSs and mRNA were determined using Western blotting and real-time PCR, respectively. RESULTS Renal dysfuntion and tissue damage in favour of ECM accumulation and renal fibrosis were observed in the ADR group. This was approved by remarkable changes in the expression of ADAMTS such as increased ADAMTS-1, -12 and -15. In addition, it was found that hypoxia and duration of hypoxia enhanced markers of tubulointerstitial fibrosis in the rat kidney tissues. Also, expression differences especially in ADAMTS-1, -6 and -15 were observed in the hypoxia groups. The variable and different expression patterns of ADAMTS proteinases in the ADR-induced renal fibrosis suggest that ADAMTS family members are involved in the development and progression of fibrosis. CONCLUSION The expression changes of ADAMTS proteinases in kidney and association with hypoxia have potential clues to contribute to the early diagnosis and treatment options of renal fibrosis.
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Affiliation(s)
- Ferah Armutcu
- Department of Biochemistry, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey
| | - Kadir Demircan
- Department of Medical Biology, Turgut Ozal University, Faculty of Medicine, Ankara, Turkey
| | - Umran Yildirim
- Department of Pathology, Turgut Ozal University, Faculty of Medicine, Ankara, Turkey
| | - Mehmet Namuslu
- Department of Biochemistry, Turgut Ozal University, Faculty of Medicine, Ankara, Turkey
| | - Murat Yagmurca
- Health Sciences University, Higher Specialization Training and Research Hospital, Histology and Embryology Clinic, Bursa, Turkey
| | - Hüseyin T Celik
- Department of Biochemistry, Turgut Ozal University, Faculty of Medicine, Ankara, Turkey
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6
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Shah S, Fourgeaud C, Derieux S, Mirshahi S, Contant G, Pimpie C, Lo Dico R, Soria J, Pocard M, Mirshahi M. The close relationship between heparanase and epithelial mesenchymal transition in gastric signet-ring cell adenocarcinoma. Oncotarget 2018; 9:33778-33787. [PMID: 30333909 PMCID: PMC6173471 DOI: 10.18632/oncotarget.26042] [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: 07/05/2018] [Accepted: 08/16/2018] [Indexed: 01/30/2023] Open
Abstract
Heparanase (HPSE), a heparan sulfate-specific endo-β-D-glucuronidase, plays an important role in tumor cell metastasis through the degradation of extracellular matrix heparan sulfate proteoglycans. Suramin, a polysulfonated naphthylurea, is an inhibitor of HPSE with suramin analogues. Our objective was to analyze the HPSE involvement in gastric signet ring cell adenocarcinoma (SRCA) invasion. High expression of HPSE mRNA and protein was found in the tumor and in ascites of SRCA as well as in KATO-III cell line. Beside of collagen-I, growth factors (TGF-β1 and VEGF-A, except FGF-2) and epithelial mesenchymal transition (EMT) markers (Snail, Slug, Vimentin, α-SMA and Fibronectin, except E-cadherin) were found higher in main nodules of SRCA as compared to peritumoral sites. Among MDR proteins, MDR-1 and LRP (lung resistance protein) were highly expressed in tumor cells. The formation of 3D cell spheroids was found to be correlated with their origin (adherent or non-adherent KATO-III). After treatment of KATO-III cells with a HPSE inhibitor (suramin), cell proliferation and EMT-related markers, besides collagen-1 expression, were down regulated. In conclusion, in SRCA, HPSE via an autocrine secretion is involved in acquisition of mesenchymal phenotype and tumor cell malignancy. Therefore, HPSE could be an interesting pharmacological target for the treatment of SRCA.
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Affiliation(s)
- Shahid Shah
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France.,Present address: Department of Pharmacy Practice, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Caroline Fourgeaud
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France
| | - Simon Derieux
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France
| | - Shahsoltan Mirshahi
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France
| | | | - Cynthia Pimpie
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France
| | - Rea Lo Dico
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France
| | - Jeannette Soria
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France
| | - Marc Pocard
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France
| | - Massoud Mirshahi
- Lariboisière Hospital, INSERM U965, Sorbonne University Paris Cité -Paris 7, 75010 Paris, France
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7
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Stangenberg S, Saad S, Schilter HC, Zaky A, Gill A, Pollock CA, Wong MG. Lysyl oxidase-like 2 inhibition ameliorates glomerulosclerosis and albuminuria in diabetic nephropathy. Sci Rep 2018; 8:9423. [PMID: 29930330 PMCID: PMC6013429 DOI: 10.1038/s41598-018-27462-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 05/29/2018] [Indexed: 12/13/2022] Open
Abstract
Diabetic nephropathy is characterised by the excessive amount of extracellular matrix in glomeruli and tubulointerstitial space. Lysyl oxidase-like 2 (LOXL2) is elevated in renal fibrosis and known to play key roles in ECM stabilisation by facilitating collagen cross-links, epithelial to mesenchymal transition and myofibroblast activation. Thus, targeting LOXL2 may prove to be a useful strategy to prevent diabetic nephropathy. We explored the renoprotective effect of a selective small molecule LOXL2 inhibitor (PXS-S2B) in a streptozotocin-induced diabetes model. Diabetic mice were treated with PXS-S2B for 24 weeks and outcomes compared with untreated diabetic mice and with telmisartan treated animals as comparator of current standard of care. Diabetic mice had albuminuria, higher glomerulosclerosis scores, upregulation of fibrosis markers and increased renal cortical LOXL2 expression. Treatment with PXS-S2B reduced albuminuria and ameliorated glomerulosclerosis. This was associated with reduced expression of glomerular fibronectin and tubulointerstitial collagen I. The renoprotective effects of both PXS-S2B and telmisartan were more marked in the glomerular compartment than in the tubulointerstitial space. The study reveals that LOXL2 inhibition was beneficial in preserving glomerular structure and function. Thus, LOXL2 may be a potential therapeutic target in diabetic nephropathy.
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Affiliation(s)
- Stefanie Stangenberg
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.,Sydney Medical School Northern, University of Sydney, NSW, Sydney, Australia
| | - Sonia Saad
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.
| | - Heidi C Schilter
- Pharmaxis Pharmaceutical Ltd., Frenchs Forest, NSW, Sydney, Australia
| | - Amgad Zaky
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia
| | - Anthony Gill
- Department of Cancer Research and Pathology Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia
| | - Carol A Pollock
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.,Sydney Medical School Northern, University of Sydney, NSW, Sydney, Australia
| | - Muh Geot Wong
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.
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8
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Ghadiri M, Canney F, Pacciana C, Colombo G, Young PM, Traini D. The use of fatty acids as absorption enhancer for pulmonary drug delivery. Int J Pharm 2018; 541:93-100. [DOI: 10.1016/j.ijpharm.2018.02.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Revised: 01/15/2018] [Accepted: 02/15/2018] [Indexed: 01/12/2023]
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9
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Nguyen LT, Chen H, Pollock C, Saad S. SIRT1 reduction is associated with sex-specific dysregulation of renal lipid metabolism and stress responses in offspring by maternal high-fat diet. Sci Rep 2017; 7:8982. [PMID: 28827681 PMCID: PMC5567163 DOI: 10.1038/s41598-017-08694-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 07/12/2017] [Indexed: 12/15/2022] Open
Abstract
Rodent models of maternal obesity have been associated with kidney damage and dysfunction in offspring. However, the underlying mechanisms are yet to be elucidated. In this study, female rats were fed a high-fat diet (HFD) for 6 weeks prior to mating, throughout gestation and lactation; both male and female offspring were examined at weaning. Our results demonstrate that renal lipid deposition was increased in male offspring only, which is associated with reduced protein expression of Sirtuin (SIRT) 1, an essential regulator of lipid metabolism and stress response. Other components in its signalling network including phosphorylated 5′-AMP-activated protein kinase (pAMPKα), Forkhead box FOXO3a and Peroxisome proliferator-activated receptor (PPAR)γ coactivator 1-alpha (PGC-1α) were also downregulated. By contrast, in female offspring, renal fat/lipid distribution was unchanged in coupling with normal SIRT1 regulation. Specific autophagy and antioxidant markers were suppressed in both sexes. On the other hand, fibronectin and Collagen type IV protein expression was significantly higher in the offspring born HFD-fed dams, particularly in the males. Collectively, these findings suggest that maternal HFD consumption can induce sex-specific changes in offspring kidney lipid metabolism and stress responses at early ages, which may underpin the risk of kidney diseases later in life.
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Affiliation(s)
- Long The Nguyen
- Renal medicine, Kolling Institute, Royal North Shore Hospital, University of Sydney, Sydney, New South Wales, Australia. .,School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, New South Wales, Australia.
| | - Hui Chen
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, New South Wales, Australia
| | - Carol Pollock
- Renal medicine, Kolling Institute, Royal North Shore Hospital, University of Sydney, Sydney, New South Wales, Australia
| | - Sonia Saad
- Renal medicine, Kolling Institute, Royal North Shore Hospital, University of Sydney, Sydney, New South Wales, Australia
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10
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Abstract
Hypertrophic scar and contracture in burn patients is a complex process. Contributing factors include critical injury depth and activation of key cell subpopulations, including deep dermal fibroblasts, myofibroblasts, fibrocytes, and T-helper cells, which cause scarring rather than regeneration. These cells influence each other via cellular profibrotic and antifibrotic signals, which help to determine the outcome. These cells also both modify and interact with extracellular matrix of the wound, ultimately forming hypertrophic scar. Current treatments reduce hypertrophic scar formation or improve remodeling by targeting these pathways and signals.
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Affiliation(s)
- Peter O Kwan
- 2A Plastic Surgery, Kaye Edmonton Clinic, University of Alberta, 11400 University Avenue, Edmonton, Alberta T6G 1Z1, Canada
| | - Edward E Tredget
- Department of Surgery, University of Alberta, 2D2.28 WMHSC, 8440-112 Street Northwest, Edmonton, Alberta T6G 2B7, Canada.
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11
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Ghadiri M, Young PM, Jarolimek W, Grau GER, Oliver BGG, Traini D. The effect of non-specific tight junction modulators on the transepithelial transport of poorly permeable drugs across airway epithelial cells. J Drug Target 2016; 25:342-349. [DOI: 10.1080/1061186x.2016.1258703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Maliheh Ghadiri
- Department of Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Glebe, Australia
| | - Paul M. Young
- Department of Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Glebe, Australia
| | | | - Georges E. R. Grau
- Vascular Immunology Unit, Sydney Medical School & Bosch Institute, University of Sydney, Camperdown, Australia
| | - Brian G. G. Oliver
- Respiratory Cellular and Molecular Biology, Woolcock Institute of Medical Research, The University of Sydney and School of Life Sciences, University of Technology, Sydney, Australia
| | - Daniela Traini
- Department of Respiratory Technology, Woolcock Institute of Medical Research and Discipline of Pharmacology, Sydney Medical School, Glebe, Australia
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12
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Mouse Models of Diabetes, Obesity and Related Kidney Disease. PLoS One 2016; 11:e0162131. [PMID: 27579698 PMCID: PMC5006968 DOI: 10.1371/journal.pone.0162131] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 08/17/2016] [Indexed: 12/13/2022] Open
Abstract
Multiple rodent models have been used to study diabetic kidney disease (DKD). The purpose of the present study was to compare models of diabetes and obesity-induced metabolic syndrome and determine differences in renal outcomes. C57BL/6 male mice were fed either normal chow or high fat diet (HFD). At postnatal week 8, chow-fed mice were randomly assigned to low-dose streptozotocin (STZ, 55 mg/kg/day, five consecutive days) or vehicle control, whereas HFD-fed mice were given either one high-dose of STZ (100 mg/kg) or vehicle control. Intraperitoneal glucose tolerance tests were performed at Week 14, 20 and 30. Urinary albumin to creatinine ratio (ACR) and serum creatinine were measured, and renal structure was assessed using Periodic Acid Schiff (PAS) staining at Week 32. Results showed that chow-fed mice exposed to five doses of STZ resembled type 1 diabetes mellitus with a lean phenotype, hyperglycaemia, microalbuminuria and increased serum creatinine levels. Their kidneys demonstrated moderate tubular injury with evidence of tubular dilatation and glycogenated nuclear inclusion bodies. HFD-fed mice resembled metabolic syndrome as they were obese with dyslipidaemia, insulin resistance, and significantly impaired glucose tolerance. One dose STZ, in addition to HFD, did not worsen metabolic features (including fasting glucose, non esterified fatty acid, and triglyceride levels). There were significant increases in urinary ACR and serum creatinine levels, and renal structural changes were predominantly related to interstitial vacuolation and tubular dilatation in HFD-fed mice.
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13
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Salacz ME, Kast RE, Saki N, Brüning A, Karpel-Massler G, Halatsch ME. Toward a noncytotoxic glioblastoma therapy: blocking MCP-1 with the MTZ Regimen. Onco Targets Ther 2016; 9:2535-45. [PMID: 27175087 PMCID: PMC4854261 DOI: 10.2147/ott.s100407] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
To improve the prognosis of glioblastoma, we developed an adjuvant treatment directed to a neglected aspect of glioblastoma growth, the contribution of nonmalignant monocyte lineage cells (MLCs) (monocyte, macrophage, microglia, dendritic cells) that infiltrated a main tumor mass. These nonmalignant cells contribute to glioblastoma growth and tumor homeostasis. MLCs comprise of approximately 10%-30% of glioblastoma by volume. After integration into the tumor mass, these become polarized toward an M2 immunosuppressive, pro-angiogenic phenotype that promotes continued tumor growth. Glioblastoma cells initiate and promote this process by synthesizing 13 kDa MCP-1 that attracts circulating monocytes to the tumor. Infiltrating monocytes, after polarizing toward an M2 phenotype, synthesize more MCP-1, forming an amplification loop. Three noncytotoxic drugs, an antibiotic - minocycline, an antihypertensive drug - telmisartan, and a bisphosphonate - zoledronic acid, have ancillary attributes of MCP-1 synthesis inhibition and could be re-purposed, singly or in combination, to inhibit or reverse MLC-mediated immunosuppression, angiogenesis, and other growth-enhancing aspects. Minocycline, telmisartan, and zoledronic acid - the MTZ Regimen - have low-toxicity profiles and could be added to standard radiotherapy and temozolomide. Re-purposing older drugs has advantages of established safety and low drug cost. Four core observations support this approach: 1) malignant glioblastoma cells require a reciprocal trophic relationship with nonmalignant macrophages or microglia to thrive; 2) glioblastoma cells secrete MCP-1 to start the cycle, attracting MLCs, which subsequently also secrete MCP-1 perpetuating the recruitment cycle; 3) increasing cytokine levels in the tumor environment generate further immunosuppression and tumor growth; and 4) MTZ regimen may impede MCP-1-driven processes, thereby interfering with glioblastoma growth.
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Affiliation(s)
- Michael E Salacz
- Department of Internal Medicine, University of Kansas, Kansas City, KS, USA; Department of Neurosurgery, University of Kansas, Kansas City, KS, USA
| | | | - Najmaldin Saki
- Health Research Institute, Research Center of Thalassemia and Hemoglobinopathy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ansgar Brüning
- Molecular Biology Laboratory, University Hospital Munich, Munich, Germany
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14
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Effect of GLP-1 Receptor Activation on Offspring Kidney Health in a Rat Model of Maternal Obesity. Sci Rep 2016; 6:23525. [PMID: 27004609 PMCID: PMC4804207 DOI: 10.1038/srep23525] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 03/08/2016] [Indexed: 11/29/2022] Open
Abstract
Maternal obesity is associated with an increased risk of chronic disease in offspring, including type 2 diabetes (T2D). Exendin-4 (Exd-4) activates the glucagon like peptide-1 (GLP-1) receptor thereby decreasing serum glucose levels and body weight. In addition, Exd-4 has been shown to reduce renal and cardiac complications in experimental models of T2D. We hypothesized that treatment with Exd-4 would ameliorate the detrimental effects of maternal and diet-induced obesity on renal characteristics in offspring. Female Sprague-Dawley rats were fed either normal or high-fat diet (HFD) for 6 weeks prior to pregnancy, during pregnancy and lactation, and their offspring were weaned to normal or HFD. The offspring were randomized to Exd-4 or placebo from weaning and their kidneys harvested at Week 9. We found that the kidneys of offspring from obese mothers, regardless of postnatal diet, had significantly increased markers of inflammation, oxidative stress and fibrosis. Exd-4 ameliorated the negative renal effects of maternal obesity and in particular, reduced renal inflammation, oxidative stress and fibrosis. In conclusion, maternal obesity has persisting effects on renal structure in the offspring. GLP-1 analogues are potentially useful for protecting against the deleterious effects of maternal obesity on renal physiology in offspring.
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15
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Feng G, Zhang J, Li Y, Nie Y, Zhu D, Wang R, Liu J, Gao J, Liu N, He N, Du W, Tao H, Che Y, Xu Y, Kong D, Zhao Q, Li Z. IGF-1 C Domain-Modified Hydrogel Enhances Cell Therapy for AKI. J Am Soc Nephrol 2016; 27:2357-69. [PMID: 26869006 DOI: 10.1681/asn.2015050578] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 10/30/2015] [Indexed: 12/15/2022] Open
Abstract
Low cell retention and engraftment after transplantation limit the successful application of stem cell therapy for AKI. Engineered microenvironments consisting of a hydrogel matrix and growth factors have been increasingly successful in controlling stem cell fate by mimicking native stem cell niche components. Here, we synthesized a bioactive hydrogel by immobilizing the C domain peptide of IGF-1 (IGF-1C) on chitosan, and we hypothesized that this hydrogel could provide a favorable niche for adipose-derived mesenchymal stem cells (ADSCs) and thereby enhance cell survival in an AKI model. In vitro studies demonstrated that compared with no hydrogel or chitosan hydrogel only, the chitosan-IGF-1C hydrogel increased cell viability through paracrine effects. In vivo, cotransplantation of the chitosan-IGF-1C hydrogel and ADSCs in ischemic kidneys ameliorated renal function, likely by the observed promotion of stem cell survival and angiogenesis, as visualized by bioluminescence imaging and attenuation of fibrosis. In conclusion, IGF-1C immobilized on a chitosan hydrogel provides an artificial microenvironment for ADSCs and may be a promising therapeutic approach for AKI.
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Affiliation(s)
- Guowei Feng
- School of Medicine and State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China; Department of Urology, Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China; and
| | - Jimin Zhang
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | | | | | | | | | - Jianfeng Liu
- Tianjin Key Laboratory of Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Science & Peking Union Medical College, Tianjin, China
| | - Jie Gao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Na Liu
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | | | | | | | | | - Yong Xu
- Department of Urology, Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, China; and
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China
| | - Qiang Zhao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China;
| | - Zongjin Li
- School of Medicine and State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, China;
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16
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Agarwal V, Toshniwal P, Smith NE, Smith NM, Li B, Clemons TD, Byrne LT, Kakulas F, Wood FM, Fear M, Corry B, Swaminathan Iyer K. Enhancing the efficacy of cation-independent mannose 6-phosphate receptor inhibitors by intracellular delivery. Chem Commun (Camb) 2016; 52:327-30. [DOI: 10.1039/c5cc06826f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Intracellular delivery of M6P/IGFII receptor inhibitors exhibits better efficacy than extracellular inhibitors to regulate TGFβ1 mediated upregulation of profibrotic marker, collagen I.
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