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Ghazi PC, O'Toole KT, Srinivas Boggaram S, Scherzer MT, Silvis MR, Zhang Y, Bogdan M, Smith BD, Lozano G, Flynn DL, Snyder EL, Kinsey CG, McMahon M. Inhibition of ULK1/2 and KRAS G12C controls tumor growth in preclinical models of lung cancer. eLife 2024; 13:RP96992. [PMID: 39213022 PMCID: PMC11364435 DOI: 10.7554/elife.96992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024] Open
Abstract
Mutational activation of KRAS occurs commonly in lung carcinogenesis and, with the recent U.S. Food and Drug Administration approval of covalent inhibitors of KRASG12C such as sotorasib or adagrasib, KRAS oncoproteins are important pharmacological targets in non-small cell lung cancer (NSCLC). However, not all KRASG12C-driven NSCLCs respond to these inhibitors, and the emergence of drug resistance in those patients who do respond can be rapid and pleiotropic. Hence, based on a backbone of covalent inhibition of KRASG12C, efforts are underway to develop effective combination therapies. Here, we report that the inhibition of KRASG12C signaling increases autophagy in KRASG12C-expressing lung cancer cells. Moreover, the combination of DCC-3116, a selective ULK1/2 inhibitor, plus sotorasib displays cooperative/synergistic suppression of human KRASG12C-driven lung cancer cell proliferation in vitro and superior tumor control in vivo. Additionally, in genetically engineered mouse models of KRASG12C-driven NSCLC, inhibition of either KRASG12C or ULK1/2 decreases tumor burden and increases mouse survival. Consequently, these data suggest that ULK1/2-mediated autophagy is a pharmacologically actionable cytoprotective stress response to inhibition of KRASG12C in lung cancer.
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Affiliation(s)
- Phaedra C Ghazi
- Department of Oncological Sciences, University of UtahSalt Lake CityUnited States
- Huntsman Cancer Institute, University of UtahSalt Lake CityUnited States
| | - Kayla T O'Toole
- Department of Oncological Sciences, University of UtahSalt Lake CityUnited States
- Huntsman Cancer Institute, University of UtahSalt Lake CityUnited States
| | - Sanjana Srinivas Boggaram
- Department of Oncological Sciences, University of UtahSalt Lake CityUnited States
- Huntsman Cancer Institute, University of UtahSalt Lake CityUnited States
| | - Michael T Scherzer
- Department of Oncological Sciences, University of UtahSalt Lake CityUnited States
- Huntsman Cancer Institute, University of UtahSalt Lake CityUnited States
| | - Mark R Silvis
- Department of Oncological Sciences, University of UtahSalt Lake CityUnited States
- Huntsman Cancer Institute, University of UtahSalt Lake CityUnited States
| | - Yun Zhang
- Department of Genetics, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | | | | | - Guillermina Lozano
- Department of Genetics, The University of Texas MD Anderson Cancer CenterHoustonUnited States
| | | | - Eric L Snyder
- Department of Oncological Sciences, University of UtahSalt Lake CityUnited States
- Huntsman Cancer Institute, University of UtahSalt Lake CityUnited States
- Department of Pathology, University of UtahSalt Lake CityUnited States
| | - Conan G Kinsey
- Department of Oncological Sciences, University of UtahSalt Lake CityUnited States
- Huntsman Cancer Institute, University of UtahSalt Lake CityUnited States
- Department of Internal Medicine, Division of Medical Oncology, University of UtahSalt Lake CityUnited States
| | - Martin McMahon
- Department of Oncological Sciences, University of UtahSalt Lake CityUnited States
- Huntsman Cancer Institute, University of UtahSalt Lake CityUnited States
- Department of Dermatology, University of UtahSalt Lake CityUnited States
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Oka M, Nakajima S, Suzuki E, Yamamoto S, Ando K. Glucose uptake in pigment glia suppresses tau-induced inflammation and photoreceptor degeneration in Drosophila. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.14.607919. [PMID: 39229232 PMCID: PMC11370381 DOI: 10.1101/2024.08.14.607919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Brain inflammation contributes to the pathogenesis of neurodegenerative diseases such as Alzheimer's disease (AD). Glucose hypometabolism and glial activation are pathological features seen in AD brains; however, the connection between the two is not fully understood. Using a Drosophila model of AD, we identified that glucose metabolism in glia plays a critical role in neuroinflammation under disease conditions. Expression of human tau in the retinal cells, including photoreceptor neurons and pigment glia, causes photoreceptor degeneration accompanied by inclusion formation and swelling of lamina glial cells. We found that inclusions are formed by glial phagocytosis, and swelling of the laminal cortex correlates with the expression of antimicrobial peptides (AMPs). Co-expression of human glucose transporter 3 ( GLUT3 ) with tau in the retina does not affect tau levels but suppresses these inflammatory responses and photoreceptor degeneration. We also found that expression of GLUT3 , specifically in the pigment glia, is sufficient to suppress inflammatory phenotypes and mitigate photoreceptor degeneration in the tau-expressing retina. Our results suggest that glial glucose metabolism contributes to inflammatory responses and neurodegeneration in tauopathy. Highlights Tau expression in the fly retina induces glial activationPigment glial cells mediate inflammatory phenotypes in the degenerating retinaEnhanced glucose uptake in the pigment glia suppresses inflammation and photoreceptor neurodegeneration caused by tau expression.
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Ghazi PC, O'Toole KT, Srinivas Boggaram S, Scherzer MT, Silvis MR, Zhang Y, Bogdan M, Smith BD, Lozano G, Flynn DL, Snyder EL, Kinsey CG, McMahon M. Inhibition of ULK1/2 and KRAS G12C controls tumor growth in preclinical models of lung cancer. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.06.579200. [PMID: 38370808 PMCID: PMC10871191 DOI: 10.1101/2024.02.06.579200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Mutational activation of KRAS occurs commonly in lung carcinogenesis and, with the recent FDA approval of covalent inhibitors of KRAS G12C such as sotorasib or adagrasib, KRAS oncoproteins are important pharmacological targets in non-small cell lung cancer (NSCLC). However, not all KRAS G12C -driven NSCLCs respond to these inhibitors, and the emergence of drug resistance in those patients that do respond can be rapid and pleiotropic. Hence, based on a backbone of covalent inhibition of KRAS G12C , efforts are underway to develop effective combination therapies. Here we report that inhibition of KRAS G12C signaling increases autophagy in KRAS G12C expressing lung cancer cells. Moreover, the combination of DCC-3116, a selective ULK1/2 inhibitor, plus sotorasib displays cooperative/synergistic suppression of human KRAS G12C -driven lung cancer cell proliferation in vitro and superior tumor control in vivo . Additionally, in genetically engineered mouse models of KRAS G12C -driven NSCLC, inhibition of either KRAS G12C or ULK1/2 decreases tumor burden and increases mouse survival. Consequently, these data suggest that ULK1/2-mediated autophagy is a pharmacologically actionable cytoprotective stress response to inhibition of KRAS G12C in lung cancer.
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Li F, Si W, Xia L, Yin D, Wei T, Tao M, Cui X, Yang J, Hong T, Wei R. Positive feedback regulation between glycolysis and histone lactylation drives oncogenesis in pancreatic ductal adenocarcinoma. Mol Cancer 2024; 23:90. [PMID: 38711083 PMCID: PMC11071201 DOI: 10.1186/s12943-024-02008-9] [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: 12/20/2023] [Accepted: 04/24/2024] [Indexed: 05/08/2024] Open
Abstract
BACKGROUND Metabolic reprogramming and epigenetic alterations contribute to the aggressiveness of pancreatic ductal adenocarcinoma (PDAC). Lactate-dependent histone modification is a new type of histone mark, which links glycolysis metabolite to the epigenetic process of lactylation. However, the role of histone lactylation in PDAC remains unclear. METHODS The level of histone lactylation in PDAC was identified by western blot and immunohistochemistry, and its relationship with the overall survival was evaluated using a Kaplan-Meier survival plot. The participation of histone lactylation in the growth and progression of PDAC was confirmed through inhibition of histone lactylation by glycolysis inhibitors or lactate dehydrogenase A (LDHA) knockdown both in vitro and in vivo. The potential writers and erasers of histone lactylation in PDAC were identified by western blot and functional experiments. The potential target genes of H3K18 lactylation (H3K18la) were screened by CUT&Tag and RNA-seq analyses. The candidate target genes TTK protein kinase (TTK) and BUB1 mitotic checkpoint serine/threonine kinase B (BUB1B) were validated through ChIP-qPCR, RT-qPCR and western blot analyses. Next, the effects of these two genes in PDAC were confirmed by knockdown or overexpression. The interaction between TTK and LDHA was identified by Co-IP assay. RESULTS Histone lactylation, especially H3K18la level was elevated in PDAC, and the high level of H3K18la was associated with poor prognosis. The suppression of glycolytic activity by different kinds of inhibitors or LDHA knockdown contributed to the anti-tumor effects of PDAC in vitro and in vivo. E1A binding protein p300 (P300) and histone deacetylase 2 were the potential writer and eraser of histone lactylation in PDAC cells, respectively. H3K18la was enriched at the promoters and activated the transcription of mitotic checkpoint regulators TTK and BUB1B. Interestingly, TTK and BUB1B could elevate the expression of P300 which in turn increased glycolysis. Moreover, TTK phosphorylated LDHA at tyrosine 239 (Y239) and activated LDHA, and subsequently upregulated lactate and H3K18la levels. CONCLUSIONS The glycolysis-H3K18la-TTK/BUB1B positive feedback loop exacerbates dysfunction in PDAC. These findings delivered a new exploration and significant inter-relationship between lactate metabolic reprogramming and epigenetic regulation, which might pave the way toward novel lactylation treatment strategies in PDAC therapy.
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Affiliation(s)
- Fei Li
- Department of Endocrinology and Metabolism, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital, Beijing, 100191, China
| | - Wenzhe Si
- Department of Laboratory Medicine, Peking University Third Hospital, Beijing, 100191, China
| | - Li Xia
- Department of Endocrinology and Metabolism, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital, Beijing, 100191, China
| | - Deshan Yin
- Department of Endocrinology and Metabolism, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital, Beijing, 100191, China
| | - Tianjiao Wei
- Department of Endocrinology and Metabolism, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital, Beijing, 100191, China
| | - Ming Tao
- Department of General Surgery, Peking University Third Hospital, Beijing, 100191, China
| | - Xiaona Cui
- Department of Endocrinology and Metabolism, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital, Beijing, 100191, China
| | - Jin Yang
- Department of Endocrinology and Metabolism, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital, Beijing, 100191, China
| | - Tianpei Hong
- Department of Endocrinology and Metabolism, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital, Beijing, 100191, China.
| | - Rui Wei
- Department of Endocrinology and Metabolism, State Key Laboratory of Female Fertility Promotion, Peking University Third Hospital, Beijing, 100191, China.
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Zhang L, Chai R, Tai Z, Miao F, Shi X, Chen Z, Zhu Q. Noval advance of histone modification in inflammatory skin diseases and related treatment methods. Front Immunol 2024; 14:1286776. [PMID: 38235133 PMCID: PMC10792063 DOI: 10.3389/fimmu.2023.1286776] [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: 09/01/2023] [Accepted: 12/08/2023] [Indexed: 01/19/2024] Open
Abstract
Inflammatory skin diseases are a group of diseases caused by the disruption of skin tissue due to immune system disorders. Histone modification plays a pivotal role in the pathogenesis and treatment of chronic inflammatory skin diseases, encompassing a wide range of conditions, including psoriasis, atopic dermatitis, lupus, systemic sclerosis, contact dermatitis, lichen planus, and alopecia areata. Analyzing histone modification as a significant epigenetic regulatory approach holds great promise for advancing our understanding and managing these complex disorders. Additionally, therapeutic interventions targeting histone modifications have emerged as promising strategies for effectively managing inflammatory skin disorders. This comprehensive review provides an overview of the diverse types of histone modification. We discuss the intricate association between histone modification and prevalent chronic inflammatory skin diseases. We also review current and potential therapeutic approaches that revolve around modulating histone modifications. Finally, we investigated the prospects of research on histone modifications in the context of chronic inflammatory skin diseases, paving the way for innovative therapeutic interventions and improved patient outcomes.
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Affiliation(s)
- Lichen Zhang
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Rongrong Chai
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Zongguang Tai
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Fengze Miao
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Xinwei Shi
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Zhongjian Chen
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
| | - Quangang Zhu
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of External Chinese Medicine, Shanghai, China
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Talukdar PD, Chatterji U. Transcriptional co-activators: emerging roles in signaling pathways and potential therapeutic targets for diseases. Signal Transduct Target Ther 2023; 8:427. [PMID: 37953273 PMCID: PMC10641101 DOI: 10.1038/s41392-023-01651-w] [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: 04/18/2023] [Revised: 08/27/2023] [Accepted: 09/10/2023] [Indexed: 11/14/2023] Open
Abstract
Specific cell states in metazoans are established by the symphony of gene expression programs that necessitate intricate synergic interactions between transcription factors and the co-activators. Deregulation of these regulatory molecules is associated with cell state transitions, which in turn is accountable for diverse maladies, including developmental disorders, metabolic disorders, and most significantly, cancer. A decade back most transcription factors, the key enablers of disease development, were historically viewed as 'undruggable'; however, in the intervening years, a wealth of literature validated that they can be targeted indirectly through transcriptional co-activators, their confederates in various physiological and molecular processes. These co-activators, along with transcription factors, have the ability to initiate and modulate transcription of diverse genes necessary for normal physiological functions, whereby, deregulation of such interactions may foster tissue-specific disease phenotype. Hence, it is essential to analyze how these co-activators modulate specific multilateral processes in coordination with other factors. The proposed review attempts to elaborate an in-depth account of the transcription co-activators, their involvement in transcription regulation, and context-specific contributions to pathophysiological conditions. This review also addresses an issue that has not been dealt with in a comprehensive manner and hopes to direct attention towards future research that will encompass patient-friendly therapeutic strategies, where drugs targeting co-activators will have enhanced benefits and reduced side effects. Additional insights into currently available therapeutic interventions and the associated constraints will eventually reveal multitudes of advanced therapeutic targets aiming for disease amelioration and good patient prognosis.
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Affiliation(s)
- Priyanka Dey Talukdar
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India
| | - Urmi Chatterji
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
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