Abstract
Purpose
Autophagy-dependent tumorigenic growth is one of the most commonly reported molecular mechanisms in glioblastoma (GBM) progression. However, the mechanistic correlation between autophagy and GBM is still largely unexplored, especially the roles of autophagy-related genes involved in GBM oncogenesis. In this study, we aimed to explore the genetic alterations that interact with both autophagic activity and GBM tumorigenesis, and to investigate the molecular mechanisms of autophagy involved in GBM cell death and survival.
Method
For this purpose, we systematically explored the alterations of autophagic molecules at the genome level in human GBM samples through deep RNA sequencing. The effect of genetic and pharmacologic inhibition of ERK on GBM growth in vitro and in vivo was researched. An image-based tracking analysis of LC3 using mCherry-eGFP-LC3 plasmid, and transmission electron microscopy were utilized to monitor autophagic flux. Immunoblot analysis was used to measure the related proteins.
Results
MAPK ERK expression was identified as one of the most probable autophagy-related transcriptional responses during GBM growth. The genetic and pharmacologic inhibition of ERK in vivo and in vitro led to cell death, demonstrating its critical role for GBM proliferation and survival. To our surprise, autophagic activities were excessively activated and resulted in cytodestructive effects on GBM cells upon ERK inhibitor treatment. Furthermore, based on the observation of downregulation of mTOR signaling, we speculated the ERK inhibitor-induced GBM cells death might depend on mTOR-mediated pathway, leading to autophagy dysregulation. Accordingly, the in vivo and in vitro experiments revealed that the mTOR inhibitor rapamycin further increased cell mortality and exhibited enhanced antitumor effect on GBM cells when co-treated with the ERK inhibitor.
Conclusion
Our data creatively demonstrated that the autophagy-related regulator ERK maintains autophagic activity during GBM tumorigenesis via mTOR signaling pathway. The pharmacologic inhibition of both mTOR and ERK signaling exhibited synergistic therapeutic effect on GBM growth in vivo and in vitro, which has certain novelty and may provide a potential therapeutic approach for GBM treatment in the future.
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Data availability
All data generated or analyzed during this study are included in this article, which are available from the corresponding author on reasonable request. No additional data are available.
Code availability
Not applicable.
References
Diamandis P, Aldape K (2018) World Health Organization 2016 classification of central nervous system tumors. Neurol Clin 36:439–447. https://doi.org/10.1016/j.ncl.2018.04.003
Ostrom QT, Cioffi G, Gittleman H, Patil N, Waite K, Kruchko C, Barnholtz-Sloan JS (2019) CBTRUS statistical report: primary brain and other central nervous system tumors diagnosed in the United States in 2012–2016. Neuro Oncol 21:v1–v100. https://doi.org/10.1093/neuonc/noz150
Lukas RV, Wainwright DA, Ladomersky E, Sachdev S, Sonabend AM, Stupp R (2019) Newly diagnosed glioblastoma: a review on clinical management. Oncology 33:91–100
Carlsson SK, Brothers SP, Wahlestedt C (2014) Emerging treatment strategies for glioblastoma multiforme. EMBO Mol Med 6:1359–1370. https://doi.org/10.15252/emmm.201302627
Stupp R, Hegi ME, Mason WP, van den Bent MJ, Taphoorn MJ, Janzer RC, Ludwin SK, Allgeier A, Fisher B, Belanger K, Hau P, Brandes AA, Gijtenbeek J, Marosi C, Vecht CJ, Mokhtari K, Wesseling P, Villa S, Eisenhauer E, Gorlia T, Weller M, Lacombe D, Cairncross JG, Mirimanoff RO, European Organisation for R, Treatment of Cancer Brain T, Radiation Oncology G, National Cancer Institute of Canada Clinical Trials G (2009) Effects of radiotherapy with concomitant and adjuvant temozolomide versus radiotherapy alone on survival in glioblastoma in a randomised phase III study: 5-year analysis of the EORTC-NCIC trial. Lancet Oncol 10:459–466. https://doi.org/10.1016/S1470-2045(09)70025-7
Tabatabai G, Wakimoto H (2019) Glioblastoma: state of the art and future perspectives. Cancers. https://doi.org/10.3390/cancers11081091
Claes A, Idema AJ, Wesseling P (2007) Diffuse glioma growth: a guerilla war. Acta Neuropathol 114:443–458. https://doi.org/10.1007/s00401-007-0293-7
de Groot JF, Fuller G, Kumar AJ, Piao Y, Eterovic K, Ji Y, Conrad CA (2010) Tumor invasion after treatment of glioblastoma with bevacizumab: radiographic and pathologic correlation in humans and mice. Neuro Oncol 12:233–242. https://doi.org/10.1093/neuonc/nop027
Strniskova M, Barancik M, Ravingerova T (2002) Mitogen-activated protein kinases and their role in regulation of cellular processes. Gen Physiol Biophys 21:231–255
Hottinger AF, Stupp R, Homicsko K (2014) Standards of care and novel approaches in the management of glioblastoma multiforme. Chin J Cancer 33:32–39. https://doi.org/10.5732/cjc.013.10207
Lee DH, Ryu HW, Won HR, Kwon SH (2017) Advances in epigenetic glioblastoma therapy. Oncotarget 8:18577–18589. https://doi.org/10.18632/oncotarget.14612
Jin T, Li D, Yang T, Liu F, Kong J, Zhou Y (2019) PTPN1 promotes the progression of glioma by activating the MAPK/ERK and PI3K/AKT pathways and is associated with poor patient survival. Oncol Rep 42:717–725. https://doi.org/10.3892/or.2019.7180
Guo YJ, Pan WW, Liu SB, Shen ZF, Xu Y, Hu LL (2020) ERK/MAPK signalling pathway and tumorigenesis. Exp Ther Med 19:1997–2007. https://doi.org/10.3892/etm.2020.8454
Batara DCR, Choi MC, Shin HU, Kim H, Kim SH (2021) Friend or foe: paradoxical roles of autophagy in gliomagenesis. Cells. https://doi.org/10.3390/cells10061411
Buzun K, Gornowicz A, Lesyk R, Bielawski K, Bielawska A (2021) Autophagy modulators in cancer therapy. Int J Mol Sci. https://doi.org/10.3390/ijms22115804
Giampieri F, Afrin S, Forbes-Hernandez TY, Gasparrini M, Cianciosi D, Reboredo-Rodriguez P, Varela-Lopez A, Quiles JL, Battino M (2019) Autophagy in human health and disease: novel therapeutic opportunities. Antioxid Redox Signal 30:577–634. https://doi.org/10.1089/ars.2017.7234
Liu X, Zhao P, Wang X, Wang L, Zhu Y, Song Y, Gao W (2019) Correction to: celastrol mediates autophagy and apoptosis via the ROS/JNK and Akt/mTOR signaling pathways in glioma cells. J Exp Clin Cancer Res 38:284. https://doi.org/10.1186/s13046-019-1285-x
Howarth A, Madureira PA, Lockwood G, Storer LCD, Grundy R, Rahman R, Pilkington GJ, Hill R (2019) Modulating autophagy as a therapeutic strategy for the treatment of paediatric high-grade glioma. Brain Pathol 29:707–725. https://doi.org/10.1111/bpa.12729
White E (2012) Deconvoluting the context-dependent role for autophagy in cancer. Nat Rev Cancer 12:401–410. https://doi.org/10.1038/nrc3262
Ciechomska IA (2018) The role of autophagy in cancer—characterization of crosstalk between apoptosis and autophagy; autophagy as a new therapeutic strategy in glioblastoma. Postep Biochem 64:119–128. https://doi.org/10.18388/pb.2018_121
Guo F, Liu X, Cai H, Le W (2018) Autophagy in neurodegenerative diseases: pathogenesis and therapy. Brain Pathol 28:3–13. https://doi.org/10.1111/bpa.12545
Guo JY, Karsli-Uzunbas G, Mathew R, Aisner SC, Kamphorst JJ, Strohecker AM, Chen G, Price S, Lu W, Teng X, Snyder E, Santanam U, Dipaola RS, Jacks T, Rabinowitz JD, White E (2013) Autophagy suppresses progression of K-ras-induced lung tumors to oncocytomas and maintains lipid homeostasis. Genes Dev 27:1447–1461. https://doi.org/10.1101/gad.219642.113
Kimmelman AC, White E (2017) Autophagy and tumor metabolism. Cell Metab 25:1037–1043. https://doi.org/10.1016/j.cmet.2017.04.004
Bhutia SK, Mukhopadhyay S, Sinha N, Das DN, Panda PK, Patra SK, Maiti TK, Mandal M, Dent P, Wang XY, Das SK, Sarkar D, Fisher PB (2013) Autophagy: cancer’s friend or foe? Adv Cancer Res 118:61–95. https://doi.org/10.1016/B978-0-12-407173-5.00003-0
Shao N, Mao J, Xue L, Wang R, Zhi F, Lan Q (2019) Carnosic acid potentiates the anticancer effect of temozolomide by inducing apoptosis and autophagy in glioma. J Neurooncol 141:277–288. https://doi.org/10.1007/s11060-018-03043-5
Trejo-Solis C, Serrano-Garcia N, Escamilla-Ramirez A, Castillo-Rodriguez RA, Jimenez-Farfan D, Palencia G, Calvillo M, Alvarez-Lemus MA, Flores-Najera A, Cruz-Salgado A, Sotelo J (2018) Autophagic and apoptotic pathways as targets for chemotherapy in glioblastoma. Int J Mol Sci. https://doi.org/10.3390/ijms19123773
Guo Z, Guozhang H, Wang H, Li Z, Liu N (2019) Ampelopsin inhibits human glioma through inducing apoptosis and autophagy dependent on ROS generation and JNK pathway. Biomed Pharmacother 116:108524. https://doi.org/10.1016/j.biopha.2018.12.136
Chen JH, Zhang P, Chen WD, Li DD, Wu XQ, Deng R, Jiao L, Li X, Ji J, Feng GK, Zeng YX, Jiang JW, Zhu XF (2015) ATM-mediated PTEN phosphorylation promotes PTEN nuclear translocation and autophagy in response to DNA-damaging agents in cancer cells. Autophagy 11:239–252. https://doi.org/10.1080/15548627.2015.1009767
Jutten B, Keulers TG, Peeters HJM, Schaaf MBE, Savelkouls KGM, Compter I, Clarijs R, Schijns O, Ackermans L, Teernstra OPM, Zonneveld MI, Colaris RME, Dubois L, Vooijs MA, Bussink J, Sotelo J, Theys J, Lammering G, Rouschop KMA (2018) EGFRvIII expression triggers a metabolic dependency and therapeutic vulnerability sensitive to autophagy inhibition. Autophagy 14:283–295. https://doi.org/10.1080/15548627.2017.1409926
Shi L, Li B, Zhang B, Zhen C, Zhou J, Tang S (2019) Mouse embryonic palatal mesenchymal cells maintain stemness through the PTEN-Akt-mTOR autophagic pathway. Stem Cell Res Ther 10:217. https://doi.org/10.1186/s13287-019-1340-8
Dolma S, Selvadurai HJ, Lan X, Lee L, Kushida M, Voisin V, Whetstone H, So M, Aviv T, Park N, Zhu X, Xu C, Head R, Rowland KJ, Bernstein M, Clarke ID, Bader G, Harrington L, Brumell JH, Tyers M, Dirks PB (2016) Inhibition of dopamine receptor D4 impedes autophagic flux, proliferation, and survival of glioblastoma stem cells. Cancer Cell 29:859–873. https://doi.org/10.1016/j.ccell.2016.05.002
Leng ZG, Lin SJ, Wu ZR, Guo YH, Cai L, Shang HB, Tang H, Xue YJ, Lou MQ, Zhao W, Le WD, Zhao WG, Zhang X, Wu ZB (2017) Activation of DRD5 (dopamine receptor D5) inhibits tumor growth by autophagic cell death. Autophagy 13:1404–1419. https://doi.org/10.1080/15548627.2017.1328347
Lin SJ, Leng ZG, Guo YH, Cai L, Cai Y, Li N, Shang HB, Le WD, Zhao WG, Wu ZB (2015) Suppression of mTOR pathway and induction of autophagy-dependent cell death by cabergoline. Oncotarget 6:39329–39341. https://doi.org/10.18632/oncotarget.5744
Moussay E, Kaoma T, Baginska J, Muller A, Van Moer K, Nicot N, Nazarov PV, Vallar L, Chouaib S, Berchem G, Janji B (2011) The acquisition of resistance to TNFα in breast cancer cells is associated with constitutive activation of autophagy as revealed by a transcriptome analysis using a custom microarray. Autophagy 7(7):760–70
Mao X, Cai T, Olyarchuk JG, Wei L (2005) Automated genome annotation and pathway identification using the KEGG orthology (KO) as a controlled vocabulary. Bioinformatics 21:3787–3793. https://doi.org/10.1093/bioinformatics/bti430
Young MD, Wakefield MJ, Smyth GK, Oshlack A (2010) Gene ontology analysis for RNA-seq: accounting for selection bias. Genome Biol 11:R14. https://doi.org/10.1186/gb-2010-11-2-r14
Fujishiro SH, Tanimura S, Mure S, Kashimoto Y, Watanabe K, Kohno M (2008) ERK1/2 phosphorylate GEF-H1 to enhance its guanine nucleotide exchange activity toward RhoA. Biochem Biophys Res Commun 368:162–167. https://doi.org/10.1016/j.bbrc.2008.01.066
Vomastek T, Iwanicki MP, Burack WR, Tiwari D, Kumar D, Parsons JT, Weber MJ, Nandicoori VK (2008) Extracellular signal-regulated kinase 2 (ERK2) phosphorylation sites and docking domain on the nuclear pore complex protein Tpr cooperatively regulate ERK2-Tpr interaction. Mol Cell Biol 28:6954–6966. https://doi.org/10.1128/MCB.00925-08
Morris EJ, Jha S, Restaino CR, Dayananth P, Zhu H, Cooper A, Carr D, Deng Y, Jin W, Black S, Long B, Liu J, Dinunzio E, Windsor W, Zhang R, Zhao S, Angagaw MH, Pinheiro EM, Desai J, Xiao L, Shipps G, Hruza A, Wang J, Kelly J, Paliwal S, Gao X, Babu BS, Zhu L, Daublain P, Zhang L, Lutterbach BA, Pelletier MR, Philippar U, Siliphaivanh P, Witter D, Kirschmeier P, Bishop WR, Hicklin D, Gilliland DG, Jayaraman L, Zawel L, Fawell S, Samatar AA (2013) Discovery of a novel ERK inhibitor with activity in models of acquired resistance to BRAF and MEK inhibitors. Cancer Discov 3:742–750. https://doi.org/10.1158/2159-8290.CD-13-0070
Cagnol S, Chambard JC (2010) ERK and cell death: mechanisms of ERK-induced cell death–apoptosis, autophagy and senescence. FEBS J 277:2–21. https://doi.org/10.1111/j.1742-4658.2009.07366.x
Settembre C, Di Malta C, Polito VA, Garcia Arencibia M, Vetrini F, Erdin S, Erdin SU, Huynh T, Medina D, Colella P, Sardiello M, Rubinsztein DC, Ballabio A (2011) TFEB links autophagy to lysosomal biogenesis. Science 332:1429–1433. https://doi.org/10.1126/science.1204592
Yang K, Wei M, Yang Z, Fu Z, Xu R, Cheng C, Chen X, Chen S, Dammer E, Le W (2020) Activation of dopamine receptor D1 inhibits glioblastoma tumorigenicity by regulating autophagic activity. Cell Oncol 43:1175–1190. https://doi.org/10.1007/s13402-020-00550-4
Klionsky DJ, Abdelmohsen K, Abe A, Abedin MJ, Zughaier SM (2016) Guidelines for the use and interpretation of assays for monitoring autophagy (3rd edition). Autophagy 12:1–222. https://doi.org/10.1080/15548627.2015.1100356
Wei Y, Pattingre S, Sinha S, Bassik M, Levine B (2008) JNK1-mediated phosphorylation of Bcl-2 regulates starvation-induced autophagy. Mol Cell 30:678–688. https://doi.org/10.1016/j.molcel.2008.06.001
Fazekas D, Koltai M, Turei D, Modos D, Palfy M, Dul Z, Zsakai L, Szalay-Beko M, Lenti K, Farkas IJ, Vellai T, Csermely P, Korcsmaros T (2013) SignaLink 2—a signaling pathway resource with multi-layered regulatory networks. BMC Syst Biol 7:7. https://doi.org/10.1186/1752-0509-7-7
Yang W, Ju JH, Lee KM, Nam K, Oh S, Shin I (2013) Protein kinase B/Akt1 inhibits autophagy by down-regulating UVRAG expression. Exp Cell Res 319:122–133. https://doi.org/10.1016/j.yexcr.2012.11.014
Fu MM, Holzbaur EL (2014) MAPK8IP1/JIP1 regulates the trafficking of autophagosomes in neurons. Autophagy 10:2079–2081. https://doi.org/10.4161/auto.34451
Bryant KL, Stalnecker CA, Zeitouni D, Klomp JE, Peng S, Tikunov AP, Gunda V, Pierobon M, Waters AM, George SD, Tomar G, Papke B, Hobbs GA, Yan L, Hayes TK, Diehl JN, Goode GD, Chaika NV, Wang Y, Zhang GF, Witkiewicz AK, Knudsen ES, Petricoin EF 3rd, Singh PK, Macdonald JM, Tran NL, Lyssiotis CA, Ying H, Kimmelman AC, Cox AD, Der CJ (2020) Author correction: combination of ERK and autophagy inhibition as a treatment approach for pancreatic cancer. Nat Med 26:982. https://doi.org/10.1038/s41591-020-0947-8
Martina JA, Chen Y, Gucek M, Puertollano R (2012) MTORC1 functions as a transcriptional regulator of autophagy by preventing nuclear transport of TFEB. Autophagy 8:903–914. https://doi.org/10.4161/auto.19653
Settembre C, Zoncu R, Medina DL, Vetrini F, Erdin S, Erdin S, Huynh T, Ferron M, Karsenty G, Vellard MC, Facchinetti V, Sabatini DM, Ballabio A (2012) A lysosome-to-nucleus signalling mechanism senses and regulates the lysosome via mTOR and TFEB. EMBO J 31:1095–1108. https://doi.org/10.1038/emboj.2012.32
Jewell JL, Russell RC, Guan KL (2013) Amino acid signalling upstream of mTOR. Nat Rev Mol Cell Biol 14:133–139. https://doi.org/10.1038/nrm3522
Fernandez AF, Sebti S, Wei Y, Zou Z, Shi M, McMillan KL, He C, Ting T, Liu Y, Chiang WC, Marciano DK, Schiattarella GG, Bhagat G, Moe OW, Hu MC, Levine B (2018) Disruption of the beclin 1-BCL2 autophagy regulatory complex promotes longevity in mice. Nature 558:136–140. https://doi.org/10.1038/s41586-018-0162-7
Wu H, Li X, Feng M, Yao L, Deng Z, Zao G, Zhou Y, Chen S, Du Z (2018) Downregulation of RNF138 inhibits cellular proliferation, migration, invasion and EMT in glioma cells via suppression of the Erk signaling pathway. Oncol Rep 40:3285–3296. https://doi.org/10.3892/or.2018.6744
Lan YL, Wang X, Lou JC, Xing JS, Zou S, Yu ZL, Ma XC, Wang H, Zhang B (2018) Marinobufagenin inhibits glioma growth through sodium pump alpha1 subunit and ERK signaling-mediated mitochondrial apoptotic pathway. Cancer Med 7:2034–2047. https://doi.org/10.1002/cam4.1469
Yu M, Yu S, Xue Y, Yu H, Chen D, Wei X, Liu Y (2018) Over-expressed FEZF1 predicts a poor prognosis in glioma and promotes glioma cell malignant biological properties by regulating Akt-ERK pathway. J Mol Neurosci 65:411–419. https://doi.org/10.1007/s12031-018-1108-0
Wang J, Whiteman MW, Lian H, Wang G, Singh A, Huang D, Denmark T (2009) A non-canonical MEK/ERK signaling pathway regulates autophagy via regulating Beclin 1. J Biol Chem 284:21412–21424. https://doi.org/10.1074/jbc.M109.026013
Yuan J, Dong X, Yap J, Hu J (2020) The MAPK and AMPK signalings: interplay and implication in targeted cancer therapy. J Hematol Oncol 13:113. https://doi.org/10.1186/s13045-020-00949-4
Yu Z, Zhao G, Xie G, Zhao L, Chen Y, Yu H, Zhang Z, Li C, Li Y (2015) Metformin and temozolomide act synergistically to inhibit growth of glioma cells and glioma stem cells in vitro and in vivo. Oncotarget 6:32930–32943. https://doi.org/10.18632/oncotarget.5405
Manning BD, Toker A (2017) AKT/PKB signaling: navigating the Network. Cell 169:381–405. https://doi.org/10.1016/j.cell.2017.04.001
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The study conception and design were performed by KY and JY. Material preparation, data collection and analysis were performed by KY, LL, XL and XS. The first draft of the manuscript was written by KY. All authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Yang, K., Luan, L., Li, X. et al. ERK inhibition in glioblastoma is associated with autophagy activation and tumorigenesis suppression. J Neurooncol 156, 123–137 (2022). https://doi.org/10.1007/s11060-021-03896-3
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DOI: https://doi.org/10.1007/s11060-021-03896-3