Notoginsenoside R1 attenuates glucose-induced podocyte injury via the inhibition of apoptosis and the activation of autophagy through the PI3K/Akt/mTOR signaling pathway

Huang, Guodong; Zou, Bingyu; Lv, Jianzhen; Li, Tongyu; Huai, Guoli; Xiang, Shaowei; Lu, Shilong; Luo, Huan; Zhang, Yaping; Jin, Y.; Wang, Yi

doi:10.3892/ijmm.2017.2864

Cited by 37 publications

(29 citation statements)

References 49 publications

(50 reference statements)

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“…An adipokine, apelin, that promoted podocyte injury and the progression of diabetic nephropathy in kkAy mice, inhibited autophagy in podocytes through activating the mTOR pathway [90]. A Chinese herbal compound notoginsenoside R1 (NR1), a major component of Panax notoginseng, increased mTORC1-dependent autophagy in podocytes exposed to high glucose and protected podocyte injury [91]. Podocyte-selective mTOR-KO mice worsened proteinuria compared to control littermates, and podocytes from these mice accumulated autophagosomes, autolysosomes, and damaged mitochondria [112].…”

Section: Mtorc1-ulk1-mediated Autophagy In Renal Injurymentioning

confidence: 99%

Autophagy Function and Regulation in Kidney Disease

et al. 2020

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Autophagy is a dynamic process by which intracellular damaged macromolecules and organelles are degraded and recycled for the synthesis of new cellular components. Basal autophagy in the kidney acts as a quality control system and is vital for cellular metabolic and organelle homeostasis. Under pathological conditions, autophagy facilitates cellular adaptation; however, activation of autophagy in response to renal injury may be insufficient to provide protection, especially under dysregulated conditions. Kidney-specific deletion of Atg genes in mice has consistently demonstrated worsened acute kidney injury (AKI) outcomes supporting the notion of a pro-survival role of autophagy. Recent studies have also begun to unfold the role of autophagy in progressive renal disease and subsequent fibrosis. Autophagy also influences tubular cell death in renal injury. In this review, we reported the current understanding of autophagy regulation and its role in the pathogenesis of renal injury. In particular, the classic mammalian target of rapamycin (mTOR)-dependent signaling pathway and other mTOR-independent alternative signaling pathways of autophagy regulation were described. Finally, we summarized the impact of autophagy activation on different forms of cell death, including apoptosis and regulated necrosis, associated with the pathophysiology of renal injury. Understanding the regulatory mechanisms of autophagy would identify important targets for therapeutic approaches.

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Section: Mtorc1-ulk1-mediated Autophagy In Renal Injurymentioning

confidence: 99%

Autophagy Function and Regulation in Kidney Disease

et al. 2020

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“…Notoginsenoside R1 (NGR1) is one of the major bioactive ingredients of R. notoginseng. Increasing amount of literatures have shown its pharmacological effects, including anti-inflammatory, antioxidant, anti-apoptotic, and neuro-protective properties [5][6][7][8]. Because of that, NGR1 has been considered to have promise in treating various diseases, like chronic atrophic gastritis [9], cerebral hypoxia [10], Alzheimer's disease [11], and so forth.…”

Section: Introductionmentioning

confidence: 99%

Notoginsenoside R1 alleviates high glucose-evoked damage in RSC96 cells through down-regulation of miR-503

Wang

Hao

2019

Artificial Cells, Nanomedicine, and Biotechnology

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Notoginsenoside R1 (NGR1) is a major bioactive ingredient of Radix notoginseng that has promise in treating several diabetes-related diseases, like diabetic nephropathy and diabetic cardiomyopathy. This work is designed to explore if NGR1 has potential in treating diabetic peripheral neuropathy (DPN). A cell model of DPN was made by stimulating RSC96 cells with high glucose. The effects of NGR1 preconditioning were examined by conducting CCK-8 assay, flow cytometry, ROS assay and Western blot. The downstream effector and signalling of NGR1 were then explored by qRT-PCR and Western blot. High glucose incubation led to cell viability loss, apoptosis facilitation, caspase-3 and PARP cleavage, and ROS generation of RSC96 cells. Meanwhile, expression of NGF and BDNF was declined by high glucose. Preconditioning NGR1 significantly protected RSC96 cells against high glucose-evoked damage. And NGR1 prevented high glucose-induced expression of miR-503. The beneficial functions of NGR1 towards high glucose-injured RSC96 cells were impeded by miR-503 overexpression. Further, NGR1 activated PI3K/AKT and b-catenin signalling through a miR-503-dependent way. This paper illustrated the neuroprotective and neurotrophic function of NGR1 in RSC96 cells. The beneficial function may due to its regulation on miR-503 expression and the downstream signalling such as PI3K/AKT and b-catenin.

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“…In glomerular diseases, podocyte damage leads to increased glomerular barrier pore size, allowing the passage of proteins or other mediators to the tubular lumen, which results in proteinuria and progressive loss of kidney function (2). Accumulating evidence indicates that hyperglycemia contributes to podocyte lesions (3). Clinical data demonstrate that podocyte integrity is impaired, and the decreased podocyte number is confirmed in individuals with type 1 (T1DM) and 2 diabetes mellitus (T2DM) (4,5).…”

Section: Introductionmentioning

confidence: 94%

Overexpression of miR‑130a‑3p/301a‑3p attenuates high glucose‑induced MPC5 podocyte dysfunction through suppression of TNF‑α signaling

Jiang

Wang²,

Liu

et al. 2017

Exp Ther Med

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Abstract. Tumor necrosis factor (TNF)-α has been reported to be important in glomerulonephritis, which is closely associated with podocyte dysfunction and apoptosis. However, the precise mechanisms by which TNF-α expression are regulated remain unclear. The purpose of the present study was to investigate the role of microRNA (miR)-130a-3p/301a-3p in the post-transcriptional control of TNF-α expression and high glucose (HG)-induced podocyte dysfunction. Mice MPC5 podocytes were incubated with HG and transfected with miR-130a-3p/301a-3p mimics or inhibitors, reactive oxygen species (ROS) levels were measured by flow cytometry assay, and the mRNA and protein levels were assayed by using reverse transcription-quantitative polymerase chain reaction and western blotting, respectively. The targeted genes were predicted by a bioinformatics algorithm and verified using a dual luciferase reporter assay. It was observed that miR-130a-3p/301a-3p was a novel regulator of TNF-α in mouse podocytes. miR-130a-3p/301a-3p mimics inhibited TNF-α 3'-untranslated region luciferase reporter activity, in addition to endogenous TNF-α protein expression. Furthermore, forced expression of miR-130a-3p or miR-301a-3p resulted in the downregulation of ROS and malondialdehyde (MDA) and the upregulation of superoxide dismutase (SOD) 1 in the presence of HG. Inhibition of TNF-α level prevented a remarkable reduc tion in SOD activity and a marked increase in ROS and MDA levels in HG-treated podocytes. Furthermore, TNF-α loss-of-function significantly reversed HG-induced podocyte apoptosis. These data demonstrated a novel up-stream role for miR-130a-3p/301a-3p in TNF-α-mediated podocyte dysfunction and apoptosis in the presence of HG. IntroductionGlomerular podocytes are highly differentiated cells that play a key role in maintaining the integrity of the glomerular filtration barrier (1). In glomerular diseases, podocyte damage leads to increased glomerular barrier pore size, allowing the passage of proteins or other mediators to the tubular lumen, which results in proteinuria and progressive loss of kidney function (2). Accumulating evidence indicates that hyperglycemia contributes to podocyte lesions (3). Clinical data demonstrate that podocyte integrity is impaired, and the decreased podocyte number is confirmed in individuals with type 1 (T1DM) and 2 diabetes mellitus (T2DM) (4,5). In cultured podocytes, high glucose induces apoptosis, epithelial-mesenchymal transition (EMT), mitochondrial fission and autophagy through different signaling pathways (6-9). However, the underlying molecular mechanisms of high glucose-induced MPC5 podocytes dysfunction remain to be fully elucidated.MicroRNAs (miRs) are endogenous, noncoding, short, single-stranded RNAs (18-25 nucleotides) that are evolutionarily highly conserved, believed to regulate the translation of target messenger RNAs (mRNAs) by binding to its 3'-untranslated regions (3'-UTRs) and verified to play a role in controlling a variety of biological processes (10). Recently, several studies have h...

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Notoginsenoside R1 attenuates glucose-induced podocyte injury via the inhibition of apoptosis and the activation of autophagy through the PI3K/Akt/mTOR signaling pathway

Cited by 37 publications

References 49 publications

Autophagy Function and Regulation in Kidney Disease

Autophagy Function and Regulation in Kidney Disease

Notoginsenoside R1 alleviates high glucose-evoked damage in RSC96 cells through down-regulation of miR-503

Overexpression of miR‑130a‑3p/301a‑3p attenuates high glucose‑induced MPC5 podocyte dysfunction through suppression of TNF‑α signaling

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