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Zhen Y, Liu K, Shi L, Shah S, Xu Q, Ellis H, Balasooriya ER, Kreuzer J, Morris R, Baldwin AS, Juric D, Haas W, Bardeesy N. FGFR inhibition blocks NF-ĸB-dependent glucose metabolism and confers metabolic vulnerabilities in cholangiocarcinoma. Nat Commun 2024; 15:3805. [PMID: 38714664 PMCID: PMC11076599 DOI: 10.1038/s41467-024-47514-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 04/04/2024] [Indexed: 05/10/2024] Open
Abstract
Genomic alterations that activate Fibroblast Growth Factor Receptor 2 (FGFR2) are common in intrahepatic cholangiocarcinoma (ICC) and confer sensitivity to FGFR inhibition. However, the depth and duration of response is often limited. Here, we conduct integrative transcriptomics, metabolomics, and phosphoproteomics analysis of patient-derived models to define pathways downstream of oncogenic FGFR2 signaling that fuel ICC growth and to uncover compensatory mechanisms associated with pathway inhibition. We find that FGFR2-mediated activation of Nuclear factor-κB (NF-κB) maintains a highly glycolytic phenotype. Conversely, FGFR inhibition blocks glucose uptake and glycolysis while inciting adaptive changes, including switching fuel source utilization favoring fatty acid oxidation and increasing mitochondrial fusion and autophagy. Accordingly, FGFR inhibitor efficacy is potentiated by combined mitochondrial targeting, an effect enhanced in xenograft models by intermittent fasting. Thus, we show that oncogenic FGFR2 signaling drives NF-κB-dependent glycolysis in ICC and that metabolic reprogramming in response to FGFR inhibition confers new targetable vulnerabilities.
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Affiliation(s)
- Yuanli Zhen
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA
- The Cancer Program, Broad Institute, Cambridge, MA, USA
| | - Kai Liu
- Center for Computational and Integrative Biology, Department of Molecular Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Lei Shi
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA
- The Cancer Program, Broad Institute, Cambridge, MA, USA
| | - Simran Shah
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
| | - Qin Xu
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA
- The Cancer Program, Broad Institute, Cambridge, MA, USA
| | - Haley Ellis
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA
- The Cancer Program, Broad Institute, Cambridge, MA, USA
| | - Eranga R Balasooriya
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA
- The Cancer Program, Broad Institute, Cambridge, MA, USA
| | - Johannes Kreuzer
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA
| | - Robert Morris
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
| | - Albert S Baldwin
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, USA
| | - Dejan Juric
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA
| | - Wilhelm Haas
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA
| | - Nabeel Bardeesy
- Krantz Family Center for Cancer Research, Massachusetts General Hospital, Boston, MA, USA.
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, USA.
- Dept. of Medicine, Harvard Medical School, Boston, MA, USA.
- The Cancer Program, Broad Institute, Cambridge, MA, USA.
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Woronzow V, Möhner J, Remane D, Zischler H. Generation of somatic de novo structural variation as a hallmark of cellular senescence in human lung fibroblasts. Front Cell Dev Biol 2023; 11:1274807. [PMID: 38152346 PMCID: PMC10751365 DOI: 10.3389/fcell.2023.1274807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/29/2023] [Indexed: 12/29/2023] Open
Abstract
Cellular senescence is characterized by replication arrest in response to stress stimuli. Senescent cells accumulate in aging tissues and can trigger organ-specific and possibly systemic dysfunction. Although senescent cell populations are heterogeneous, a key feature is that they exhibit epigenetic changes. Epigenetic changes such as loss of repressive constitutive heterochromatin could lead to subsequent LINE-1 derepression, a phenomenon often described in the context of senescence or somatic evolution. LINE-1 elements decode the retroposition machinery and reverse transcription generates cDNA from autonomous and non-autonomous TEs that can potentially reintegrate into genomes and cause structural variants. Another feature of cellular senescence is mitochondrial dysfunction caused by mitochondrial damage. In combination with impaired mitophagy, which is characteristic of senescent cells, this could lead to cytosolic mtDNA accumulation and, as a genomic consequence, integrations of mtDNA into nuclear DNA (nDNA), resulting in mitochondrial pseudogenes called numts. Thus, both phenomena could cause structural variants in aging genomes that go beyond epigenetic changes. We therefore compared proliferating and senescent IMR-90 cells in terms of somatic de novo numts and integrations of a non-autonomous composite retrotransposons - the so-called SVA elements-that hijack the retropositional machinery of LINE-1. We applied a subtractive and kinetic enrichment technique using proliferating cell DNA as a driver and senescent genomes as a tester for the detection of nuclear flanks of de novo SVA integrations. Coupled with deep sequencing we obtained a genomic readout for SVA retrotransposition possibly linked to cellular senescence in the IMR-90 model. Furthermore, we compared the genomes of proliferative and senescent IMR-90 cells by deep sequencing or after enrichment of nuclear DNA using AluScan technology. A total of 1,695 de novo SVA integrations were detected in senescent IMR-90 cells, of which 333 were unique. Moreover, we identified a total of 81 de novo numts with perfect identity to both mtDNA and nuclear hg38 flanks. In summary, we present evidence for possible age-dependent structural genomic changes by paralogization that go beyond epigenetic modifications. We hypothesize, that the structural variants we observe potentially impact processes associated with replicative aging of IMR-90 cells.
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Affiliation(s)
- Valentina Woronzow
- Division of Anthropology, Institute of Organismic and Molecular Evolution, Faculty of Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Jonas Möhner
- Division of Anthropology, Institute of Organismic and Molecular Evolution, Faculty of Biology, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Daniel Remane
- Division of Anthropology, Institute of Organismic and Molecular Evolution, Faculty of Biology, Johannes Gutenberg University Mainz, Mainz, Germany
- HOX Life Science GmbH, Frankfurt, Hessen, Germany
| | - Hans Zischler
- Division of Anthropology, Institute of Organismic and Molecular Evolution, Faculty of Biology, Johannes Gutenberg University Mainz, Mainz, Germany
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Li-Zhen L, Chen ZC, Wang SS, Liu WB, Zhuang XD. Klotho deficiency causes cardiac ageing by impairing autophagic and activating apoptotic activity. Eur J Pharmacol 2021; 911:174559. [PMID: 34637700 DOI: 10.1016/j.ejphar.2021.174559] [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] [Received: 06/20/2021] [Revised: 10/03/2021] [Accepted: 10/06/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVE In this study, it was hypothesized that klotho deficiency plays an essential role in cardiac ageing in vivo and demonstrated that supplementation with exogenous klotho protects against cardiomyocyte ageing in vitro. METHODS We measured the lifespan of wild-type (WT) and klotho-hypomorphic mutant (KL-/-) mice and recorded the cardiac function of the mice through echocardiography. We used immunofluorescence staining to detect the LC3B (microtubule-associated protein light chain 3 B), Beclin 1, Bax and Bcl 2 proteins. In vitro, H9c2 cells were incubated with different levels of D-galactose (D-gal) with or without klotho. SA-β-galactosidase staining and western blotting were performed to detect ageing-associated proteins (P53, P21 and P16), autophagy-associated proteins (LC3 II/LC3 I and Beclin 1) and apoptosis-associated proteins (Bax and Bcl 2). Moreover, one-step TUNEL apoptosis, CCK-8, cell morphology, Hoechst 33258 staining, lactate dehydrogenase (LDH) release, and caspase-3 activity assays were performed, and intracellular reactive oxygen species (ROS) levels were measured. RESULTS Genetic klotho deficiency decreased lifespan and cardiac function in mice, impaired autophagic activity and increased apoptotic activity. Exogenous klotho attenuated cardiomyocyte ageing and reversed changes in autophagic and apoptotic activity caused by D-gal. Moreover, klotho supplementation prevented D-gal-induced oxidative stress and cytotoxicity. CONCLUSIONS Klotho might have a protective effect on cardiac ageing via autophagy activation and apoptosis inhibition.
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Affiliation(s)
- Liao Li-Zhen
- Guangdong Engineering Research Center for Light and Health, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong, PR China; Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong, PR China
| | - Zhi-Chong Chen
- Cardiovascular Department, The Sixth Affiliated Hospital of Sun Yat-sen University, No. 26, Erheng Road, Yuan Village, Tianhe District, Guangzhou, Guangdong Province, PR China
| | - Sui-Sui Wang
- Guangdong Engineering Research Center for Light and Health, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong, PR China; Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong, PR China
| | - Wen-Bin Liu
- Guangdong Engineering Research Center for Light and Health, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong, PR China; Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong, PR China
| | - Xiao-Dong Zhuang
- Cardiology Department, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou, Guangdong, PR China.
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