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Sklepkiewicz P, Dymek BA, Mlacki M, Koralewski R, Mazur M, Nejman-Gryz P, Korur S, Zagozdzon A, Rymaszewska A, von der Thüsen JH, Siwińska AM, Güner NC, Cheda Ł, Paplinska-Goryca M, Proboszcz M, van den Bosch TPP, Górska K, Golab J, Kamiński RM, Krenke R, Golebiowski A, Dzwonek K, Dobrzanski P. Inhibition of CHIT1 as a novel therapeutic approach in idiopathic pulmonary fibrosis. Eur J Pharmacol 2022; 919:174792. [PMID: 35122869 DOI: 10.1016/j.ejphar.2022.174792] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 12/13/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive and eventually fatal lung disease with a complex etiology. Approved drugs, nintedanib and pirfenidone, modify disease progression, but IPF remains incurable and there is an urgent need for new therapies. We identified chitotriosidase (CHIT1) as new driver of fibrosis in IPF and a novel therapeutic target. We demonstrate that CHIT1 activity and expression are significantly increased in serum (3-fold) and induced sputum (4-fold) from IPF patients. In the lungs CHIT1 is expressed in a distinct subpopulation of profibrotic, disease-specific macrophages, which are only present in patients with ILDs and CHIT1 is one of the defining markers of this fibrosis-associated gene cluster. To define CHIT1 role in fibrosis, we used the therapeutic protocol of the bleomycin-induced pulmonary fibrosis mouse model. We demonstrate that in the context of chitinase induction and the macrophage-specific expression of CHIT1, this model recapitulates lung fibrosis in ILDs. Genetic inactivation of Chit1 attenuated bleomycin-induced fibrosis (decreasing the Ashcroft scoring by 28%) and decreased expression of profibrotic factors in lung tissues. Pharmacological inhibition of chitinases by OATD-01 reduced fibrosis and soluble collagen concentration. OATD-01 exhibited anti-fibrotic activity comparable to pirfenidone resulting in the reduction of the Ashcroft score by 32% and 31%, respectively. These studies provide a preclinical proof-of-concept for the antifibrotic effects of OATD-01 and establish CHIT1 as a potential new therapeutic target for IPF.
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Affiliation(s)
| | - Barbara A Dymek
- OncoArendi Therapeutics SA, 02-089, Warsaw, Poland; Postgraduate School of Molecular Medicine, Medical University of Warsaw, 02-097, Warsaw, Poland.
| | | | | | | | - Patrycja Nejman-Gryz
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, 02-097, Warsaw, Poland
| | - Serdar Korur
- OncoArendi Therapeutics SA, 02-089, Warsaw, Poland
| | | | | | - Jan H von der Thüsen
- Department of Pathology, Erasmus Medical Center, 3015 GD, Rotterdam, the Netherlands
| | | | | | - Łukasz Cheda
- OncoArendi Therapeutics SA, 02-089, Warsaw, Poland
| | - Magdalena Paplinska-Goryca
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, 02-097, Warsaw, Poland
| | - Małgorzata Proboszcz
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, 02-097, Warsaw, Poland
| | | | - Katarzyna Górska
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, 02-097, Warsaw, Poland
| | - Jakub Golab
- Department of Immunology, Medical University of Warsaw, 02-097, Warsaw, Poland
| | | | - Rafał Krenke
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, 02-097, Warsaw, Poland
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Korur S, Huber RM, Sivasankaran B, Petrich M, Morin P, Hemmings BA, Merlo A, Lino MM. GSK3beta regulates differentiation and growth arrest in glioblastoma. PLoS One 2009; 4:e7443. [PMID: 19823589 PMCID: PMC2757722 DOI: 10.1371/journal.pone.0007443] [Citation(s) in RCA: 118] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2009] [Accepted: 09/21/2009] [Indexed: 01/06/2023] Open
Abstract
Cancers are driven by a population of cells with the stem cell properties of self-renewal and unlimited growth. As a subpopulation within the tumor mass, these cells are believed to constitute a tumor cell reservoir. Pathways controlling the renewal of normal stem cells are deregulated in cancer. The polycomb group gene Bmi1, which is required for neural stem cell self-renewal and also controls anti-oxidant defense in neurons, is upregulated in several cancers, including medulloblastoma. We have found that Bmi1 is consistently and highly expressed in GBM. Downregulation of Bmi1 by shRNAs induced a differentiation phenotype and reduced expression of the stem cell markers Sox2 and Nestin. Interestingly, expression of glycogen synthase kinase 3 beta (GSK3β), which was found to be consistently expressed in primary GBM, also declined. This suggests a functional link between Bmi1 and GSK3β. Interference with GSK3β activity by siRNA, the specific inhibitor SB216763, or lithium chloride (LiCl) induced tumor cell differentiation. In addition, tumor cell apoptosis was enhanced, the formation of neurospheres was impaired, and clonogenicity reduced in a dose-dependent manner. GBM cell lines consist mainly of CD133-negative (CD133-) cells. Interestingly, ex vivo cells from primary tumor biopsies allowed the identification of a CD133- subpopulation of cells that express stem cell markers and are depleted by inactivation of GSK3β. Drugs that inhibit GSK3, including the psychiatric drug LiCl, may deplete the GBM stem cell reservoir independently of CD133 status.
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Affiliation(s)
- Serdar Korur
- Laboratory of Molecular Neuro-Oncology, University Hospital Basel, Basel, Switzerland
| | - Roland M. Huber
- Laboratory of Molecular Neuro-Oncology, University Hospital Basel, Basel, Switzerland
| | | | - Michael Petrich
- Laboratory of Molecular Neuro-Oncology, University Hospital Basel, Basel, Switzerland
| | - Pier Morin
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - Brian A. Hemmings
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - Adrian Merlo
- Laboratory of Molecular Neuro-Oncology, University Hospital Basel, Basel, Switzerland
- * E-mail:
| | - Maria Maddalena Lino
- Laboratory of Molecular Neuro-Oncology, University Hospital Basel, Basel, Switzerland
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Egler V, Korur S, Failly M, Boulay JL, Imber R, Lino MM, Merlo A. Histone deacetylase inhibition and blockade of the glycolytic pathway synergistically induce glioblastoma cell death. Clin Cancer Res 2008; 14:3132-40. [PMID: 18483381 DOI: 10.1158/1078-0432.ccr-07-4182] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
PURPOSE High-grade gliomas are difficult to treat due to their location behind the blood-brain barrier and to inherent radioresistance and chemoresistance. EXPERIMENTAL DESIGN Because tumorigenesis is considered a multistep process of accumulating mutations affecting distinct signaling pathways, combinations of compounds, which inhibit nonoverlapping pathways, are being explored to improve treatment of gliomas. Histone deacetylase inhibitors (HDI) have proven antitumor activity by blocking cell proliferation, promoting differentiation, and inducing tumor cell apoptosis. RESULTS In this report, we show that the HDIs trichostatin A, sodium butyrate, and low nanomolar doses of LAQ824 combined with the glycolysis inhibitor 2-deoxy-d-glucose induce strong apoptosis in cancer cell lines of brain, breast, and cervix in a p53-independent manner. HDIs up-regulate p21, which is blocked by concomitant administration of 2-deoxy-d-glucose. CONCLUSIONS We propose simultaneous blockade of histone deacetylation and glycolysis as a novel therapeutic strategy for several major cancers.
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Affiliation(s)
- Vivian Egler
- Laboratory of Molecular Neuro-oncology, Department of Research and Surgery, University Hospitals, Basel, Switzerland
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Failly M, Korur S, Egler V, Boulay JL, Lino MM, Imber R, Merlo A. Combination of sublethal concentrations of epidermal growth factor receptor inhibitor and microtubule stabilizer induces apoptosis of glioblastoma cells. Mol Cancer Ther 2007; 6:773-81. [PMID: 17308073 DOI: 10.1158/1535-7163.mct-06-0566] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The oncogenic epidermal growth factor receptor (EGFR) pathway triggers downstream phosphatidylinositol 3-kinase (PI3K)/RAS-mediated signaling cascades. In transgenic mice, glioblastoma cannot develop on single but only on simultaneous activation of the EGFR signaling mediators RAS and AKT. However, complete blockade of EGFR activation does not result in apoptosis in human glioblastoma cells, suggesting additional cross-talk between downstream pathways. Based on these observations, we investigated combination therapies using protein kinase inhibitors against EGFR, platelet-derived growth factor receptor, and mammalian target of rapamycin, assessing glioblastoma cell survival. Clinically relevant doses of AEE788, Gleevec (imatinib), and RAD001 (everolimus), alone or in combinations, did not induce glioblastoma cell apoptosis. In contrast, simultaneous inactivation of the EGFR downstream targets mitogen-activated protein/extracellular signal-regulated kinase (ERK) kinase and PI3K by U0126 and wortmannin triggered rapid tumor cell death. Blocking EGFR with AEE788 in combination with sublethal concentrations of the microtubule stabilizer patupilone also induced apoptosis and reduced cell proliferation in glioblastoma cells, accompanied by reduced AKT and ERK activity. These data underline the critical role of the PI3K/AKT and the RAS/RAF/mitogen-activated protein/ERK kinase/ERK signaling cascades in the cell-intrinsic survival program of sensitive glioblastoma cell lines. We conclude that drug combinations, which down-regulate both ERK and protein kinase B/AKT activity, may prove effective in overcoming cell resistance in a subgroup of glioblastoma.
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Affiliation(s)
- Mike Failly
- Laboratory of Molecular Neurooncology, Departments of Research and Surgery, University Hospital Basel, Spitalstrasse 21, 4031 Basel, Switzerland
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