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Lei C, Liu D, Zhou Q, Ma S, Qian H. Engineering of dopamine conjugated with bovine serum albumin and zeolite imidazole framework: A promising drug delivery nanocarrier on lung cancer cells. Heliyon 2024; 10:e36580. [PMID: 39281594 PMCID: PMC11401118 DOI: 10.1016/j.heliyon.2024.e36580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 08/19/2024] [Accepted: 08/19/2024] [Indexed: 09/18/2024] Open
Abstract
Modern, highly abundant materials called metal-organic structures (MOF) comprise metal ions and organic coordinating molecules and have attracted attention as potential biomedical materials due to their unusual properties. In the present study, the anticancer drug sorafenib (SF) and the Kaempferol (KM) were encapsulated in a nanocomposite made of bovine serum albumin (BA) as the core and pH-dependent zeolitic imidazolate framework-8 (ZIF) coating. To develop a multifunctional nanocarrier, polydopamine, Au3+ chelation, and gallic acid (GL) conjugation were used to build BA@SF@ZIF and BA@SF@ZIF/KM. A variety of characterisation techniques verified the success of the nanocarrier's fabrication. Studies in vitro exhibited that BA@SF@ZIF/DA/GL and BA@SF@ZIF/KM/DA/GL released their respective ligands in a pH-dependent manner due to ZIF-8. These nanocarriers' cytotoxicity and apoptotic effects were measured with the MTT evaluation. Morphological and nuclear damage staining in A549 and H1299 human lung cancer cells. The cytotoxicity investigation displayed that BA@SF@ZIF/DA/GL and BA@SF@ZIF/KM/DA/GL were more efficient than free sorafenib in A549 and H1299 cells with less toxicity in HUVECs. The DNA fragmentation of the cells was assessed by utilizing the comet assay. BA@SF@ZIF/KM/DA/GL increased ROS levels and caused mitochondrial membrane potential and DNA damage, which resulted in apoptosis. Therefore, we believe the developed smart BA@SF@ZIF/KM/DA/GL could be a promising therapeutic approach using sorafenib for lung cancer therapy.
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Affiliation(s)
- Chenggang Lei
- Department of Cardiothoracic Surgery, Jingzhou Hospital Affiliated to Yangtze University, No.26, Chuyuan Road, Jingzhou District, Jingzhou City, Hubei Province, 434020, China
| | - Di Liu
- Department of Cardiothoracic Surgery, Jingzhou Hospital Affiliated to Yangtze University, No.26, Chuyuan Road, Jingzhou District, Jingzhou City, Hubei Province, 434020, China
| | - Qian Zhou
- Department of Cardiothoracic Surgery, Jingzhou Hospital Affiliated to Yangtze University, No.26, Chuyuan Road, Jingzhou District, Jingzhou City, Hubei Province, 434020, China
| | - Shengwei Ma
- Department of Cardiothoracic Surgery, Jingzhou Hospital Affiliated to Yangtze University, No.26, Chuyuan Road, Jingzhou District, Jingzhou City, Hubei Province, 434020, China
| | - Haiyun Qian
- Department of Cardiothoracic Surgery, Jingzhou Hospital Affiliated to Yangtze University, No.26, Chuyuan Road, Jingzhou District, Jingzhou City, Hubei Province, 434020, China
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Yue C, Cai-Hong W. Study of the optic nerve in patients with type 2 diabetic retinopathy by shear-wave elastography. Clin Radiol 2024; 79:e574-e581. [PMID: 38278740 DOI: 10.1016/j.crad.2023.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 11/26/2023] [Accepted: 12/24/2023] [Indexed: 01/28/2024]
Abstract
AIM To investigate the clinical value of two-dimensional shear-wave elastography (2D-SWE) in detecting optic nerve elasticity and in-frame adipose tissue elasticity in patients with type 2 diabetic retinopathy (DR). MATERIALS AND METHODS 2D-SWE was used to detect SWE values of the optic nerve and adipose tissue in adjacent optic nerve frames in 30 healthy participants, 30 patients with diabetic non-retinopathy (NDR), 35 patients with non-proliferative diabetic retinopathy (NPDR), and 30 patients with proliferative diabetic retinopathy (PDR). The correlation between SWE values and blood glucose, blood lipid, age, body mass index (BMI) was analysed. Receiver operating characteristic (ROC) curve analysis was performed for SWE values. RESULTS The SWE values of the optic nerve and in-frame adipose tissue increased with the progression of DR, and analysis of variance was compared with groups: the SWE values of the optic nerve and in-frame adipose tissue in each group were significantly different (all p<0.001). The SWE values of the optic nerve and in-frame adipose tissue correlated positively with BMI, age, triglyceride, and fasting blood glucose, and correlated negatively with high-density lipoprotein. The SWE values of the optic nerve and in-frame adipose tissue had higher diagnostic efficacy. The combination of the two had higher diagnostic accuracy. CONCLUSION The elastic modulus of optic nerve and in-frame adipose tissue can effectively predict and grade of DR, that is, 2D-SWE can be used as a non-invasive imaging diagnostic method for DR. The combined diagnostic efficacy of optic nerve SWE value and in-frame adipose tissue SWE value is significantly better than that of single use. This study found that increased BMI, age, triglyceride, and fasting blood glucose, and decreased high-density lipoprotein are risk factors for DR.
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Affiliation(s)
- C Yue
- Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou City, Inner Mongolia Autonomous Region, 014010, China.
| | - W Cai-Hong
- Department of Ultrasound, The Second Affiliated Hospital of Inner Mongolia University of Science and Technology, Baotou City, Inner Mongolia Autonomous Region, 014031, China
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Lv C, Cheng T, Zhang B, Sun K, Lu K. Triptolide protects against podocyte injury in diabetic nephropathy by activating the Nrf2/HO-1 pathway and inhibiting the NLRP3 inflammasome pathway. Ren Fail 2023; 45:2165103. [PMID: 36938748 PMCID: PMC10035962 DOI: 10.1080/0886022x.2023.2165103] [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] [Indexed: 03/21/2023] Open
Abstract
Objectives: Diabetic nephropathy (DN) is the most common microvascular complication of diabetes mellitus. This study investigated the mechanism of triptolide (TP) in podocyte injury in DN.Methods: DN mouse models were established by feeding with a high-fat diet and injecting with streptozocin and MPC5 podocyte injury models were induced by high-glucose (HG), followed by TP treatment. Fasting blood glucose and renal function indicators, such as 24 h urine albumin (UAlb), serum creatinine (SCr), blood urea nitrogen (BUN), and kidney/body weight ratio of mice were examined. H&E and TUNEL staining were performed for evaluating pathological changes and apoptosis in renal tissue. The podocyte markers, reactive oxygen species (ROS), oxidative stress (OS), serum inflammatory cytokines, nuclear factor-erythroid 2-related factor 2 (Nrf2) pathway-related proteins, and pyroptosis were detected by Western blotting and corresponding kits. MPC5 cell viability and pyroptosis were evaluated by MTT and Hoechst 33342/PI double-fluorescence staining. Nrf2 inhibitor ML385 was used to verify the regulation of TP on Nrf2.Results: TP improved renal function and histopathological injury of DN mice, alleviated podocytes injury, reduced OS and ROS by activating the Nrf2/heme oxygenase-1 (HO-1) pathway, and weakened pyroptosis by inhibiting the nod-like receptor (NLR) family pyrin domain containing 3 (NLRP3) inflammasome pathway. In vitro experiments further verified the inhibition of TP on OS and pyroptosis by mediating the Nrf2/HO-1 and NLRP3 inflammasome pathways. Inhibition of Nrf2 reversed the protective effect of TP on MPC5 cells.Conclusions: Overall, TP alleviated podocyte injury in DN by inhibiting OS and pyroptosis via Nrf2/ROS/NLRP3 axis.
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Affiliation(s)
- Chenlei Lv
- Department of Nephrology, The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Tianyang Cheng
- Department of Nephrology, The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Bingbing Zhang
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Ke Sun
- Department of Nephrology, The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
| | - Keda Lu
- Department of Nephrology, The Third Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China
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Jin Q, Liu T, Chen D, Yang L, Mao H, Ma F, Wang Y, Li P, Zhan Y. Therapeutic potential of artemisinin and its derivatives in managing kidney diseases. Front Pharmacol 2023; 14:1097206. [PMID: 36874000 PMCID: PMC9974673 DOI: 10.3389/fphar.2023.1097206] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
Artemisinin, an antimalarial traditional Chinese herb, is isolated from Artemisia annua. L, and has shown fewer side effects. Several pieces of evidence have demonstrated that artemisinin and its derivatives exhibited therapeutic effects on diseases like malaria, cancer, immune disorders, and inflammatory diseases. Additionally, the antimalarial drugs demonstrated antioxidant and anti-inflammatory activities, regulating the immune system and autophagy and modulating glycolipid metabolism properties, suggesting an alternative for managing kidney disease. This review assessed the pharmacological activities of artemisinin. It summarized the critical outcomes and probable mechanism of artemisinins in treating kidney diseases, including inflammatory, oxidative stress, autophagy, mitochondrial homeostasis, endoplasmic reticulum stress, glycolipid metabolism, insulin resistance, diabetic nephropathy, lupus nephritis, membranous nephropathy, IgA nephropathy, and acute kidney injury, suggesting the therapeutic potential of artemisinin and its derivatives in managing kidney diseases, especially the podocyte-associated kidney diseases.
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Affiliation(s)
- Qi Jin
- China Academy of Chinese Medical Sciences, Guang'anmen Hospital, Beijing, China
| | - Tongtong Liu
- China Academy of Chinese Medical Sciences, Guang'anmen Hospital, Beijing, China
| | - Danqian Chen
- China-Japan Friendship Hospital, Institute of Clinical Medical Sciences, Beijing, China
| | - Liping Yang
- China Academy of Chinese Medical Sciences, Guang'anmen Hospital, Beijing, China
| | - Huimin Mao
- China Academy of Chinese Medical Sciences, Guang'anmen Hospital, Beijing, China
| | - Fang Ma
- China Academy of Chinese Medical Sciences, Guang'anmen Hospital, Beijing, China
| | - Yuyang Wang
- China Academy of Chinese Medical Sciences, Guang'anmen Hospital, Beijing, China
| | - Ping Li
- China-Japan Friendship Hospital, Institute of Clinical Medical Sciences, Beijing, China
| | - Yongli Zhan
- China Academy of Chinese Medical Sciences, Guang'anmen Hospital, Beijing, China
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Channer B, Matt SM, Nickoloff-Bybel EA, Pappa V, Agarwal Y, Wickman J, Gaskill PJ. Dopamine, Immunity, and Disease. Pharmacol Rev 2023; 75:62-158. [PMID: 36757901 PMCID: PMC9832385 DOI: 10.1124/pharmrev.122.000618] [Citation(s) in RCA: 77] [Impact Index Per Article: 38.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 12/14/2022] Open
Abstract
The neurotransmitter dopamine is a key factor in central nervous system (CNS) function, regulating many processes including reward, movement, and cognition. Dopamine also regulates critical functions in peripheral organs, such as blood pressure, renal activity, and intestinal motility. Beyond these functions, a growing body of evidence indicates that dopamine is an important immunoregulatory factor. Most types of immune cells express dopamine receptors and other dopaminergic proteins, and many immune cells take up, produce, store, and/or release dopamine, suggesting that dopaminergic immunomodulation is important for immune function. Targeting these pathways could be a promising avenue for the treatment of inflammation and disease, but despite increasing research in this area, data on the specific effects of dopamine on many immune cells and disease processes remain inconsistent and poorly understood. Therefore, this review integrates the current knowledge of the role of dopamine in immune cell function and inflammatory signaling across systems. We also discuss the current understanding of dopaminergic regulation of immune signaling in the CNS and peripheral tissues, highlighting the role of dopaminergic immunomodulation in diseases such as Parkinson's disease, several neuropsychiatric conditions, neurologic human immunodeficiency virus, inflammatory bowel disease, rheumatoid arthritis, and others. Careful consideration is given to the influence of experimental design on results, and we note a number of areas in need of further research. Overall, this review integrates our knowledge of dopaminergic immunology at the cellular, tissue, and disease level and prompts the development of therapeutics and strategies targeted toward ameliorating disease through dopaminergic regulation of immunity. SIGNIFICANCE STATEMENT: Canonically, dopamine is recognized as a neurotransmitter involved in the regulation of movement, cognition, and reward. However, dopamine also acts as an immune modulator in the central nervous system and periphery. This review comprehensively assesses the current knowledge of dopaminergic immunomodulation and the role of dopamine in disease pathogenesis at the cellular and tissue level. This will provide broad access to this information across fields, identify areas in need of further investigation, and drive the development of dopaminergic therapeutic strategies.
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Affiliation(s)
- Breana Channer
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Stephanie M Matt
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Emily A Nickoloff-Bybel
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Vasiliki Pappa
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Yash Agarwal
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Jason Wickman
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
| | - Peter J Gaskill
- Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania (B.C., S.M.M., E.A.N-B., Y.A., J.W., P.J.G.); and The Children's Hospital of Philadelphia Research Institute, Philadelphia, Pennsylvania (V.P.)
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Chen X, Wang J, Lin Y, Liu Y, Zhou T. Signaling Pathways of Podocyte Injury in Diabetic Kidney Disease and the Effect of Sodium-Glucose Cotransporter 2 Inhibitors. Cells 2022; 11:3913. [PMID: 36497173 PMCID: PMC9736207 DOI: 10.3390/cells11233913] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/28/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Diabetic kidney disease (DKD) is one of the most important comorbidities for patients with diabetes, and its incidence has exceeded one tenth, with an increasing trend. Studies have shown that diabetes is associated with a decrease in the number of podocytes. Diabetes can induce apoptosis of podocytes through several apoptotic pathways or induce autophagy of podocytes through related pathways. At the same time, hyperglycemia can also directly lead to apoptosis of podocytes, and the related inflammatory reactions are all harmful to podocytes. Podocyte damage is often accompanied by the production of proteinuria and the progression of DKD. As a new therapeutic agent for diabetes, sodium-glucose cotransporter 2 inhibitors (SGLT2i) have been demonstrated to be effective in the treatment of diabetes and the improvement of terminal outcomes in many rodent experiments and clinical studies. At the same time, SGLT2i can also play a protective role in diabetes-induced podocyte injury by improving the expression of nephrotic protein defects and inhibiting podocyte cytoskeletal remodeling. Some studies have also shown that SGLT2i can play a role in inhibiting the apoptosis and autophagy of cells. However, there is no relevant study that clearly indicates whether SGLT2i can also play a role in the above pathways in podocytes. This review mainly summarizes the damage to podocyte structure and function in DKD patients and related signaling pathways, as well as the possible protective mechanism of SGLT2i on podocyte function.
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Affiliation(s)
- Xiutian Chen
- Department of Nephrology, The Second Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
| | - Jiali Wang
- Department of Nephrology, The Second Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
| | - Yongda Lin
- Department of Nephrology, The Second Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
| | - Yiping Liu
- Department of Nephrology, The Second Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
| | - Tianbiao Zhou
- Department of Nephrology, The Second Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
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Li H, Wu R, Xi Y, Li H, Chang G, Sun F, Wei C, Jiao L, Wen X, Zhang G, Zaid A, Hao J. Dopamine 1 receptors inhibit apoptosis via activating CSE/H 2 S pathway in high glucose-induced vascular endothelial cells. Cell Biol Int 2022; 46:1098-1108. [PMID: 35293655 DOI: 10.1002/cbin.11794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/10/2022] [Accepted: 03/07/2022] [Indexed: 11/08/2022]
Abstract
High glucose (HG) induced dysfunction of vascular endothelial cells plays a crucial role in the development of diabetic vascular complications. Inhibition of cystathionine γ-synthase/hydrogen sulfide (CSE/H2 S) pathway is one of the causes of vascular endothelial cells injury induced by HG. Dopamine D1 receptors (DR1) are widely expressed and regulate important physiological functions in the vascular system. However, the effect of DR1 inhibition on HG-induced vascular endothelial apoptosis by regulating CSE/H2 S pathway is unclear. Therefore, we aimed to determine if DR1 can regulate the CSE/H2 S pathway and the effect of DR1 on HG-induced apoptosis in human umbilical vein endothelial cells (HUVECs). In this study, we found that HG treatment significantly decreased the expression of DR1 and CSE and the endogenous content of H2 S, DR1 agonist SKF 38393 reversed these effect, while NaHS only increased CSE expression and the endogenous H2 S production and had no effect on DR1 expression. Meanwhile, HG significantly raised intracellular calcium concentration ([Ca2+ ]i ), SKF 38393 further increased HG-induced [Ca2+ ]i . In addition, HG increased LDH activity, MDA and ROS contents, apoptotic rate, the expression of cleaved caspase-3, -9 and Cytochrome C and the activity of phosphorylated-IκBα (p-IκBα) and phosphorylated-NF-κB (p-NF-κB), reduced cell viability, SOD activity and Bcl-2 expressions. SKF 38393 and NaHS markedly reversed the effect of HG. The effect of SKF 38393 was similar to NAC (an inhibitor of oxidative stress) or PDTC (a NF-kB inhibitor). Taken together, DR1 up-regulate CSE/H2 S pathway by increasing [Ca2+ ]i , which inhibits HG-induced apoptosis via down-regulating NF-κB/IκBα pathway in vascular endothelial cells. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hongzhu Li
- School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Ren Wu
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Yuxin Xi
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Hongxia Li
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Guiquan Chang
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Fengqi Sun
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Can Wei
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Lijie Jiao
- School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China
| | - Xin Wen
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Gensheng Zhang
- Department of Critical Care Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Altaany Zaid
- Faculty of Medicine, Yarmouk University, Irbid, Jordan
| | - Jinghui Hao
- Department of Pathophysiology, Harbin Medical University, Harbin, 150081, Heilongjiang, China
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Mitochondrial Oxidative Stress and Cell Death in Podocytopathies. Biomolecules 2022; 12:biom12030403. [DOI: 10.3390/biom12030403] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/26/2022] [Accepted: 03/01/2022] [Indexed: 02/05/2023] Open
Abstract
Podocytopathies are kidney diseases that are driven by podocyte injury with proteinuria and proteinuria-related symptoms as the main clinical presentations. Albeit podocytopathies are the major contributors to end-stage kidney disease, the underlying molecular mechanisms of podocyte injury remain to be elucidated. Mitochondrial oxidative stress is associated with kidney diseases, and increasing evidence suggests that oxidative stress plays a vital role in the pathogenesis of podocytopathies. Accumulating evidence has placed mitochondrial oxidative stress in the focus of cell death research. Excessive generated reactive oxygen species over antioxidant defense under pathological conditions lead to oxidative damage to cellular components and regulate cell death in the podocyte. Conversely, exogenous antioxidants can protect podocyte from cell death. This review provides an overview of the role of mitochondrial oxidative stress in podocytopathies and discusses its role in the cell death of the podocyte, aiming to identify the novel targets to improve the treatment of patients with podocytopathies.
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Hosni ND, Anauate AC, Boim MA. Reference genes for mesangial cell and podocyte qPCR gene expression studies under high-glucose and renin-angiotensin-system blocker conditions. PLoS One 2021; 16:e0246227. [PMID: 34242222 PMCID: PMC8270477 DOI: 10.1371/journal.pone.0246227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 06/21/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Real-time PCR remains currently the gold standard method for gene expression studies. Identification of the best reference gene is a key point in performing high-quality qPCR, providing strong support for results, and performing as a source of bias when inappropriately chosen. Mesangial cells and podocytes, as essential cell lines to study diabetic kidney disease (DKD) physiopathology, demand accurate analysis of the reference genes used thus far to enhance the validity of gene expression studies, especially regarding high glucose (HG) and DKD treatments, with angiotensin II receptor blockers (e.g., losartan) being the most commonly used. This study aimed to evaluate the suitability and define the most stable reference gene for mesangial cell and podocyte studies of an in vitro DKD model of disease and its treatment. METHODS Five software packages (RefFinder, NormFinder, GeNorm, Bestkeeper, and DataAssist) and the comparative ΔCt method were selected to analyze six different candidate genes: HPRT, ACTB, PGAM-1, GAPDH, PPIA, and B2M. RNA was extracted, and cDNA was synthesized from immortalized mouse mesangial cells and podocytes cultured in 4 groups: control (n = 5; 5 mM glucose), mannitol (n = 5; 30 mM, as osmotic control), HG (n = 5; 30 mM glucose), and HG + losartan (n = 5; 30 mM glucose and 10-4 mM losartan). Real-time PCR was performed according to MIQE guidelines. RESULTS We identified that the use of 2 genes was the best combination for qPCR normalization for both mesangial cells and podocytes. For mesangial cells, the combination of HPRT and ACTB presented higher stability values. For podocytes, HPRT and GAPDH showed the best results. CONCLUSION This analysis provides support for the use of HPRT and ACTB as reference genes in mouse mesangial cell studies of gene expression via real-time PCR, while for podocytes, HPRT and GAPDH should be chosen.
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Affiliation(s)
- Nicole Dittrich Hosni
- Nephrology Division, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ana Carolina Anauate
- Nephrology Division, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Mirian Aparecida Boim
- Nephrology Division, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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Benchoula K, Parhar IS, Madhavan P, Hwa WE. CREB nuclear transcription activity as a targeting factor in the treatment of diabetes and diabetes complications. Biochem Pharmacol 2021; 188:114531. [PMID: 33773975 DOI: 10.1016/j.bcp.2021.114531] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/09/2021] [Accepted: 03/17/2021] [Indexed: 02/06/2023]
Abstract
Diabetes mellitus is a metabolic disorder diagnosed by elevated blood glucose levels and a defect in insulin production. Blood glucose, an energy source in the body, is regenerated by two fundamental processes: glycolysis and gluconeogenesis. These two processes are the main mechanisms used by humans and many other animals to maintain blood glucose levels, thereby avoiding hypoglycaemia. The released insulin from pancreatic β-cells activates glycolysis. However, the glucagon released from the pancreatic α-cells activates gluconeogenesis in the liver, leading to pyruvate conversion to glucose-6-phosphate by different enzymes such as fructose 1,6-bisphosphatase and glucose 6-phosphatase. These enzymes' expression is controlled by the glucagon/ cyclic adenosine 3',5'-monophosphate (cAMP)/ proteinkinase A (PKA) pathway. This pathway phosphorylates cAMP-response element-binding protein (CREB) in the nucleus to bind it to these enzyme promoters and activate their expression. During fasting, this process is activated to supply the body with glucose; however, it is overactivated in diabetes. Thus, the inhibition of this process by blocking the expression of the enzymes via CREB is an alternative strategy for the treatment of diabetes. This review was designed to investigate the association between CREB activity and the treatment of diabetes and diabetes complications. The phosphorylation of CREB is a crucial step in regulating the gene expression of the enzymes of gluconeogenesis. Many studies have proven that CREB is over-activated by glucagon and many other factors contributing to the elevation of fasting glucose levels in people with diabetes. The physiological function of CREB should be regarded in developing a therapeutic strategy for the treatment of diabetes mellitus and its complications. However, the accessible laboratory findings for CREB activity of the previous research still not strong enough for continuing to the clinical trial yet.
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Affiliation(s)
- Khaled Benchoula
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500 Subang Jaya, Selangor, Malaysia
| | - Ishwar S Parhar
- Monash University (Malaysia) BRIMS, Jeffrey Cheah School of Medicine & Health Sciences, Jalan Lagoon Selatan, Bandar Sunway, 47500 Subang Jaya, Selangor, Malaysia
| | - Priya Madhavan
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500 Subang Jaya, Selangor, Malaysia
| | - Wong Eng Hwa
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, 1, Jalan Taylors, 47500 Subang Jaya, Selangor, Malaysia.
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A novel podocyte protein, R3h domain containing-like, inhibits TGF-β-induced p38 MAPK and regulates the structure of podocytes and glomerular basement membrane. J Mol Med (Berl) 2021; 99:859-876. [PMID: 33620517 DOI: 10.1007/s00109-021-02050-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 01/14/2021] [Accepted: 02/10/2021] [Indexed: 12/14/2022]
Abstract
Not only in kidney glomerular physiological function but also glomerular pathology especially in diabetic condition, glomerular podocytes play pivotal roles. Therefore, it is important to increase our knowledge about the genes and proteins expressed in podocytes. Recently, we have identified a novel podocyte-expressed gene, R3h domain containing-like (R3hdml) and analyzed its function in vivo as well as in vitro. Transforming growth factor-β (TGF-β) signaling regulated the expression of R3hdml. And R3hdml inhibited p38 mitogen-activated protein kinase phosphorylation, which was induced by TGF-β, leading to the amelioration of podocyte apoptosis. Furthermore, a lack of R3hdml in mice significantly worsened glomerular function in streptozotocin (STZ)-induced diabetes, while overexpression of R3hdml ameliorated albuminuria in STZ-induced diabetes. Our results surmise that the functional analyses of R3hdml may lead to the development of novel therapeutic strategies for diabetic nephropathy in the future. KEY MESSAGES: • A novel podocyte expressed protein R3h domain containing-like was identified. • R3HDML inhibits podocyte apoptosis by inhibiting TGF-β-mediated p38 MAPK signaling. • Overexpression of R3HDML ameliorates albuminuria in STZ-induced diabetes mice. • R3HDML may prove to be a novel therapeutic strategy for diabetic nephropathy.
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The Role of the Renal Dopaminergic System and Oxidative Stress in the Pathogenesis of Hypertension. Biomedicines 2021; 9:biomedicines9020139. [PMID: 33535566 PMCID: PMC7912729 DOI: 10.3390/biomedicines9020139] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 01/11/2023] Open
Abstract
The kidney is critical in the long-term regulation of blood pressure. Oxidative stress is one of the many factors that is accountable for the development of hypertension. The five dopamine receptor subtypes (D1R–D5R) have important roles in the regulation of blood pressure through several mechanisms, such as inhibition of oxidative stress. Dopamine receptors, including those expressed in the kidney, reduce oxidative stress by inhibiting the expression or action of receptors that increase oxidative stress. In addition, dopamine receptors stimulate the expression or action of receptors that decrease oxidative stress. This article examines the importance and relationship between the renal dopaminergic system and oxidative stress in the regulation of renal sodium handling and blood pressure. It discusses the current information on renal dopamine receptor-mediated antioxidative network, which includes the production of reactive oxygen species and abnormalities of renal dopamine receptors. Recognizing the mechanisms by which renal dopamine receptors regulate oxidative stress and their degree of influence on the pathogenesis of hypertension would further advance the understanding of the pathophysiology of hypertension.
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Sun Y, Deng M, Ke X, Lei X, Ju H, Liu Z, Bai X. Epidermal Growth Factor Protects Against High Glucose-Induced Podocyte Injury Possibly via Modulation of Autophagy and PI3K/AKT/mTOR Signaling Pathway Through DNA Methylation. Diabetes Metab Syndr Obes 2021; 14:2255-2268. [PMID: 34045875 PMCID: PMC8149214 DOI: 10.2147/dmso.s299562] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 04/23/2021] [Indexed: 01/03/2023] Open
Abstract
AIM Diabetic nephropathy (DN) is a serious health problem worldwide. Epidermal growth factor (EGF) has suggested as a potential biomarker for the progression of chronic kidney disease. In this study, we examined the effects of EGF on the high glucose (HG)-induced podocyte injury and explored the underlying molecular mechanisms. METHODS The cell proliferation, toxicity, and cell apoptosis of podocytes were determined by CCK-8 assay, lactate dehydrogenase release assay, and flow cytometry, respectively, and protein levels in the podocytes were determined by Western blot assay. Mechanistically, DNA methylation analysis, bioinformatic analysis, methylation‑specific PCR and quantitative real-time PCR were used to analyze functional pathways in differentially methylated genes and the expression of the key methylated genes in the podocytes after different interventions. RESULTS EGF treatment significantly increased the protein expression level of LC3 and decreased the protein level of P62 in HG-stimulated podocytes, which was attenuated by autophagy inhibitor, 3-methyladenine. EGF increased the cell proliferation and the protein expression levels of nephrin and synaptopodin, but reduced cell toxicity and cell apoptosis and protein expression level of cleaved caspase-3, which was partially antagonized by 3-methyladenine. DNA methylation expression profiles revealed the differential hypermethylation sites and hypomethylation sites among podocytes treated with normal glucose, HG and HG+EGF. GO enrichment analysis showed that DNA methylation was significantly enriched in negative regulation of phosphorylation, cell-cell junction and GTPase binding. KEGG pathway analysis showed that these genes were mainly enriched in PI3K-Akt, Hippo and autophagy pathways. Further validation studies revealed that six hub genes (ITGB1, GRB2, FN1, ITGB3, FZD10 and FGFR1) may be associated with the protective effects of EGF on the HG-induced podocyte injury. CONCLUSION In summary, our results demonstrated that EGF exerted protective effects on HG-induced podocytes injury via enhancing cell proliferation and inhibiting cell apoptosis. Further mechanistic studies implied that EGF-mediated protective effects in HG-stimulated podocytes may be associated with modulation of autophagy and PI3K/AKT/mTOR signaling pathway.
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Affiliation(s)
- Yan Sun
- Department of Endocrinology, Southern University of Science and Technology Hospital, Shenzhen, People’s Republic of China
| | - Ming Deng
- Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen Sun Yat-Sen Cardiovascular Hospital, Shenzhen, 518057, People’s Republic of China
| | - Xiao Ke
- Department of Cardiology, Fuwai Hospital, Chinese Academy of Medical Sciences, Shenzhen Sun Yat-Sen Cardiovascular Hospital, Shenzhen, 518057, People’s Republic of China
| | - Xiangyang Lei
- Department of Endocrinology, Affiliated Longhua People’s Hospital, Southern Medical University, Longhua People’s Hospital, Shenzhen, People’s Republic of China
| | - Hao Ju
- Department of Endocrinology, Affiliated Longhua People’s Hospital, Southern Medical University, Longhua People’s Hospital, Shenzhen, People’s Republic of China
| | - Zhiming Liu
- Department of Endocrinology, Affiliated Longhua People’s Hospital, Southern Medical University, Longhua People’s Hospital, Shenzhen, People’s Republic of China
| | - Xiaosu Bai
- Department of Endocrinology, Affiliated Longhua People’s Hospital, Southern Medical University, Longhua People’s Hospital, Shenzhen, People’s Republic of China
- Department of General Practice; Affiliated Longhua People’s Hospital, Southern Medical University, Longhua People’s Hospital, Shenzhen, People’s Republic of China
- Correspondence: Xiaosu Bai Affiliated Longhua People’s Hospital, Southern Medical University, Longhua People’s Hospital, No. 2, Jianshe East Road, Bao’an District, Shenzhen, 518109, People’s Republic of ChinaTel +86-755-27741585 Email
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Hu J, Lu X, Zhang X, Shao X, Wang Y, Chen J, Zhao B, Li S, Xu C, Wei C. Exogenous spermine attenuates myocardial fibrosis in diabetic cardiomyopathy by inhibiting endoplasmic reticulum stress and the canonical Wnt signaling pathway. Cell Biol Int 2020; 44:1660-1670. [PMID: 32304136 DOI: 10.1002/cbin.11360] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/30/2020] [Accepted: 04/11/2020] [Indexed: 12/13/2022]
Abstract
Myocardial fibrosis is one of the main pathological manifestations of diabetic cardiomyopathy (DCM). Spermine (SPM), a product of polyamine metabolism, plays an important role in many cardiac diseases including hypertrophy, ischemia, and infarction, but its role in diabetic myocardial fibrosis has not been clarified. This study aimed to investigate the role of polyamine metabolism, specifically SPM, in diabetic myocardial fibrosis and to explore the related mechanisms. We used intraperitoneal injection of streptozotocin (STZ, 60 mg/kg) in Wistar rats and high glucose (HG, 40 mM) stimulated cardiac fibroblasts (CFs) to established a type 1 diabetes (T1D) model in vivo and in vitro, which were pretreated with exogenous SPM (5 mg/kg per day and 5 μM). The results showed that hyperglycemia induced the expression of the key polyamine synthesis enzyme ornithine decarboxylase (ODC) decreased and the key catabolic enzyme spermidine/spermine N1 -acetyltransferase (SSAT) increased compared with those in the control group. The body weight, blood insulin level, and cardiac ejection function were decreased, while blood glucose, heart weight, the ratio of heart weight to body weight, myocardial interstitial collagen deposition, and endoplasmic reticulum stress (ERS)-related protein (glucose-regulated protein-78, glucose-regulated protein-94, activating transcription factor-4, and C/EBP homology protein) expression in the T1D group were all significantly increased. HG also caused an increased expression of Wnt3, β-catenin (in cytoplasm and nucleus), while Axin2 and phosphorylated β-catenin decreased. Exogenous SPM improved the above changes caused by polyamine metabolic disorders. In conclusion, polyamine metabolism disorder occurs in the myocardial tissue of diabetic rats, causing myocardial fibrosis and ERS. Exogenous SPM plays a myocardial protective role via inhibiting of ERS and the canonical Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Jing Hu
- Department of Pathophysiology, Harbin Medical University, Harbin, China
| | - Xiaoxiao Lu
- Department of Physical Diagnostics, First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - Xinying Zhang
- Department of Pathophysiology, Harbin Medical University, Harbin, China
| | - Xiaoting Shao
- Department of Pathophysiology, Harbin Medical University, Harbin, China
| | - Yuehong Wang
- Department of Pathophysiology, Harbin Medical University, Harbin, China
| | - Junting Chen
- Department of Anesthesiology, Harbin Medical University Fourth Hospital, Harbin, China
| | - Bingbing Zhao
- Department of Pathophysiology, Harbin Medical University, Harbin, China
| | - Siwei Li
- Department of Pathophysiology, Harbin Medical University, Harbin, China
| | - Changqing Xu
- Department of Pathophysiology, Harbin Medical University, Harbin, China
| | - Can Wei
- Department of Pathophysiology, Harbin Medical University, Harbin, China
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