Abstract
Receptor-interacting protein kinase 1/3 (RIPK1/3) and mixed lineage kinase domain-like (MLKL)-mediated necroptosis contributes to brain injury after ischemic stroke. Ligustroflavone is an ingredient of common privet with activities of anti-inflammation and complement inhibition. This study aims to explore the effect of ligustroflavone on ischemic brain injury in stroke rat and the underlying mechanisms. A rat model of ischemic stroke was established by middle cerebral artery occlusion (MCAO), which showed ischemic injury (increase in neurological deficit score and infarct volume) and upregulation of necroptosis-associated proteins (RIPK1, RIPK3 and MLKL/p-MLKL). Administration of ligustroflavone (30 mg/kg, i.g.) 15 min before ischemia evidently improved neurological function, reduced infarct volume, and decreased the levels of necroptosis-associated proteins except the RIPK1. Consistently, hypoxia-cultured PC12 cells (O2/N2/CO2, 1:94:5, 8 h) caused cellular injury (LDH release and necroposis) concomitant with up-regulation of necroptosis-associated proteins, and these phenomena were blocked in the presence of ligustroflavone (25 μM) except the elevated RIPK1 levels. Using the Molecular Operating Environment (MOE) program, we identified RIPK1, RIPK3, and MLKL as potential targets of ligustroflavone. Further studies showed that the interaction between RIPK3 and RIPK1 or MLKL was significantly enhanced, which was blocked in the presence of ligustroflavone. Based on these observations, we conclude that ligustroflavone protects rat brain from ischemic injury, and its beneficial effect is related to the prevention of necroptosis through a mechanism involving targeting RIPK1, RIPK3, and/or MLKL.
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References
Bailey LJ, Alahari S, Tagliaferro A, Post M, Caniggia I (2017) Augmented trophoblast cell death in preeclampsia can proceed via ceramide-mediated necroptosis. Cell Death Dis 8:e2590
Conrad M, Angeli JP, Vandenabeele P, Stockwell BR (2016) Regulated necrosis: disease relevance and therapeutic opportunities. Nat Rev Drug Discov 15:348–366
Cook WD, Moujalled DM, Ralph TJ, Lock P, Young SN, Murphy JM, Vaux DL (2014) RIPK1- and RIPK3-induced cell death mode is determined by target availability. Cell Death Differ 21:1600–1612
Cruz SA, Qin Z, Stewart AFR, Chen HH (2018) Dabrafenib, an inhibitor of RIP3 kinase-dependent necroptosis, reduces ischemic brain injury. Neural Regen Res 13:252–256
Dunai Z, Bauer PI, Mihalik R (2011) Necroptosis: biochemical, physiological and pathological aspects. Pathol Oncol Res 17:791–800
Duprez L, Takahashi N, Van Hauwermeiren F, Vandendriessche B, Goossens V, Vanden Berghe T, Declercq W, Libert C, Cauwels A, Vandenabeele P (2011) RIP kinase-dependent necrosis drives lethal systemic inflammatory response syndrome. Immunity 35:908–918
Green DR, Oberst A, Dillon CP, Weinlich R, Salvesen GS (2011) RIPK-dependent necrosis and its regulation by caspases: a mystery in five acts. Mol Cell 44:9–16
Khoshnam SE, Winlow W, Farzaneh M, Farbood Y, Moghaddam HF (2017) Pathogenic mechanisms following ischemic stroke. Neurol Sci 38:1167–1186
Koudstaal S, Oerlemans MI, Van der Spoel TI, Janssen AW, Hoefer IE, Doevendans PA, Sluijter JP, Chamuleau SA (2015) Necrostatin-1 alleviates reperfusion injury following acute myocardial infarction in pigs. Eur J Clin Investig 45:150–159
Li D, Meng L, Xu T, Su Y, Liu X, Zhang Z, Wang X (2017) RIPK1-RIPK3-MLKL-dependent necrosis promotes the aging of mouse male reproductive system. Elife 6
Ni Y, Gu WW, Liu ZH, Zhu YM, Rong JG, Kent TA, Li M, Qiao SG, An JZ, Zhang HL (2018) RIP1K contributes to neuronal and astrocytic cell death in ischemic stroke via activating Autophagic-lysosomal pathway. Neuroscience 371:60–74
Nikseresht S, Khodagholi F, Ahmadiani A (2019) Protective effects of ex-527 on cerebral ischemia-reperfusion injury through necroptosis signaling pathway attenuation. J Cell Physiol 234:1816–1826
Pieroni A, Pachaly P (2000) Isolation and structure elucidation of ligustroflavone, a new apigenin triglycoside from the leaves of Ligustrum vulgare L. Pharmazie 55:78–80
Pieroni A, Pachaly P, Huang Y, Van Poel B, Vlietinck AJ (2000) Studies on anti-complementary activity of extracts and isolated flavones from Ligustrum vulgare and Phillyrea latifolia leaves (Oleaceae). J Ethnopharmacol 70:213–217
Schabitz WR, Schade H, Heiland S, Kollmar R, Bardutzky J, Henninger N, Muller H, Carl U, Toyokuni S, Sommer C, Schwab S (2004) Neuroprotection by hyperbaric oxygenation after experimental focal cerebral ischemia monitored by MRI. Stroke 35:1175–1179
Tian J, Guo S, Chen H, Peng JJ, Jia MM, Li NS, Zhang XJ, Yang J, Luo XJ, Peng J (2018) Combination of Emricasan with Ponatinib synergistically reduces ischemia/reperfusion injury in rat brain through simultaneous prevention of apoptosis and necroptosis. Transl Stroke Res 9:382–392
Tonnus W, Linkermann A (2017) The in vivo evidence for regulated necrosis. Immunol Rev 277:128–149
Vanden Berghe T, Linkermann A, Jouan-Lanhouet S, Walczak H, Vandenabeele P (2014) Regulated necrosis: the expanding network of non-apoptotic cell death pathways. Nat Rev Mol Cell Biol 15:135–147
Vieira M, Fernandes J, Carreto L, Anuncibay-Soto B, Santos M, Han J, Fernandez-Lopez A, Duarte CB, Carvalho AL, Santos AE (2014) Ischemic insults induce necroptotic cell death in hippocampal neurons through the up-regulation of endogenous RIP3. Neurobiol Dis 68:26–36
Yang J, Zhao Y, Zhang L, Fan H, Qi C, Zhang K, Liu X, Fei L, Chen S, Wang M, Kuang F, Wang Y, Wu S (2018) RIPK3/MLKL-mediated neuronal necroptosis modulates the M1/M2 polarization of microglia/macrophages in the ischemic cortex. Cereb Cortex 28:2622–2635
Yuan J, Amin P, Ofengeim D (2019) Necroptosis and RIPK1-mediated neuroinflammation in CNS diseases. Nat Rev Neurosci 20:19–33
Zhang HF, Li TB, Liu B, Lou Z, Zhang JJ, Peng JJ, Zhang XJ, Ma QL, Peng J, Luo XJ (2015) Inhibition of myosin light chain kinase reduces NADPH oxidase-mediated oxidative injury in rat brain following cerebral ischemia/reperfusion. Naunyn Schmiedeberg's Arch Pharmacol 388:953–963
Zhang YZ, Wang L, Zhang JJ, Xiong XM, Zhang D, Tang XM, Luo XJ, Ma QL, Peng J (2018) Vascular peroxide 1 promotes ox-LDL-induced programmed necrosis in endothelial cells through a mechanism involving beta-catenin signaling. Atherosclerosis 274:128–138
Funding
This work was supported by the National Nature Science Foundation of China (No. 81573430 to Xiu-Ju Luo, No. 81872873 to Jun Peng), and Hunan Provincial Natural Science Foundation of China (No. 2015JJ2156 to Xiu-Ju Luo).
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LXJ, PJ, and YJ conceived and designed the research. ZYY, LWN, and LYQ conducted experiments. ZYY and ZXJ analyzed data. ZYY, LXJ, and PJ wrote the manuscript. All authors read and approved the manuscript.
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The study was done with compliance to the ethics standards and approval from the ethics committee of the Central South University, China.
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Zhang, YY., Liu, WN., Li, YQ. et al. Ligustroflavone reduces necroptosis in rat brain after ischemic stroke through targeting RIPK1/RIPK3/MLKL pathway. Naunyn-Schmiedeberg's Arch Pharmacol 392, 1085–1095 (2019). https://doi.org/10.1007/s00210-019-01656-9
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DOI: https://doi.org/10.1007/s00210-019-01656-9