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Kumarasamy V, Wang J, Frangou C, Wan Y, Dynka A, Rosenheck H, Dey P, Abel EV, Knudsen ES, Witkiewicz AK. The Extracellular Niche and Tumor Microenvironment Enhance KRAS Inhibitor Efficacy in Pancreatic Cancer. Cancer Res 2024; 84:1115-1132. [PMID: 38294344 PMCID: PMC10982648 DOI: 10.1158/0008-5472.can-23-2504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 11/28/2023] [Accepted: 01/25/2024] [Indexed: 02/01/2024]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is an aggressive disease that lacks effective treatment options, highlighting the need for developing new therapeutic interventions. Here, we assessed the response to pharmacologic inhibition of KRAS, the central oncogenic driver of PDAC. In a panel of PDAC cell lines, inhibition of KRASG12D with MRTX1133 yielded variable efficacy in suppressing cell growth and downstream gene expression programs in 2D cultures. On the basis of CRISPR-Cas9 loss-of-function screens, ITGB1 was identified as a target to enhance the therapeutic response to MRTX1133 by regulating mechanotransduction signaling and YAP/TAZ expression, which was confirmed by gene-specific knockdown and combinatorial drug synergy. Interestingly, MRTX1133 was considerably more efficacious in 3D cell cultures. Moreover, MRTX1133 elicited a pronounced cytostatic effect in vivo and controlled tumor growth in PDAC patient-derived xenografts. In syngeneic models, KRASG12D inhibition led to tumor regression that did not occur in immune-deficient hosts. Digital spatial profiling on tumor tissues indicated that MRTX1133-mediated KRAS inhibition enhanced IFNγ signaling and induced antigen presentation that modulated the tumor microenvironment. Further investigation of the immunologic response using single-cell sequencing and multispectral imaging revealed that tumor regression was associated with suppression of neutrophils and influx of effector CD8+ T cells. Together, these findings demonstrate that both tumor cell-intrinsic and -extrinsic events contribute to response to MRTX1133 and credential KRASG12D inhibition as a promising therapeutic strategy for a large percentage of patients with PDAC. SIGNIFICANCE Pharmacologic inhibition of KRAS elicits varied responses in pancreatic cancer 2D cell lines, 3D organoid cultures, and xenografts, underscoring the importance of mechanotransduction and the tumor microenvironment in regulating therapeutic responses.
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Affiliation(s)
- Vishnu Kumarasamy
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Jianxin Wang
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Costakis Frangou
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Yin Wan
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Andrew Dynka
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Hanna Rosenheck
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Prasenjit Dey
- Department of Immunology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Ethan V. Abel
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Erik S. Knudsen
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
| | - Agnieszka K. Witkiewicz
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, New York
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Kumarasamy V, Frangou C, Wang J, Wan Y, Dynka A, Rosenheck H, Dey P, Abel EV, Knudsen ES, Witkiewicz AK. Pharmacologically targeting KRAS G12D in PDAC models: tumor cell intrinsic and extrinsic impact. bioRxiv 2023:2023.03.18.533261. [PMID: 37162905 PMCID: PMC10168422 DOI: 10.1101/2023.03.18.533261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is an aggressive disease for which new therapeutic interventions are needed. Here we assessed the cellular response to pharmacological KRAS inhibition, which target the central oncogenic factor in PDAC. In a panel of PDAC cell lines, pharmaceutical inhibition of KRAS G12D allele, with MRTX1133 yields variable efficacy in the suppression of cell growth and downstream gene expression programs in 2D culture. CRISPR screens identify new drivers for enhanced therapeutic response that regulate focal adhesion and signaling cascades, which were confirmed by gene specific knockdowns and combinatorial drug synergy. Interestingly, MRTX1133 is considerably more efficacious in the context of 3D cell cultures and in vivo PDAC patient-derived xenografts. In syngeneic models, KRAS G12D inhibition elicits potent tumor regression that did not occur in immune-deficient hosts. Digital spatial profiling on tumor tissues indicates that MRTX1133 activates interferon-γ signaling and induces antigen presentation that modulate the tumor microenvironment. Further investigation on the immunological response using single cell sequencing and multispectral imaging reveals that tumor regression is associated with suppression of neutrophils and influx of effector CD8 + T-cells. Thus, both tumor cell intrinsic and extrinsic events contribute to response and credential KRAS G12D inhibition as promising strategy for a large percentage of PDAC tumors.
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Seldeen KL, Shahini A, Thiyagarajan R, Redae Y, Leiker M, Rajabian N, Dynka A, Andreadis ST, Troen BR. Short-term nicotinamide riboside treatment improves muscle quality and function in mice and increases cellular energetics and differentiating capacity of myogenic progenitors. Nutrition 2021; 87-88:111189. [PMID: 33744645 DOI: 10.1016/j.nut.2021.111189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 01/29/2023]
Abstract
OBJECTIVES Nicotinamide adenine dinucleotide (NAD+), an essential cofactor for mitochondrial function, declines with aging, which may lead to impaired physical performance. Nicotinamide riboside (NR), a NAD+ precursor, restores cellular NAD+ levels. The aim of this study was to examine the effects of short-term NR supplementation on physical performance in middle-aged mice and the effects on mouse and human muscle stem cells. METHODS We treated 15-mo-old male C57BL/6J mice with NR at 300 mg·kg·d-1 (NR3), 600 mg·kg·d-1 (NR6), or placebo (PLB), n = 8 per group, and assessed changes in physical performance, muscle histology, and NAD+ content after 4 wk of treatment. RESULTS NR increased total NAD+ in muscle tissue (NR3 P = 0.01; NR6 P = 0.004, both versus PLB), enhanced treadmill endurance and open-field activity, and prevented decline in grip strength. Histologic analysis revealed NR-treated mice exhibited enlarged slow-twitch fibers (NR6 versus PLB P = 0.014; NR3 P = 0.16) and a trend toward more slow fibers (NR3 P = 0.14; NR6 P = 0.22). We next carried out experiments to characterize NR effects on mitochondrial activity and cellular energetics in vitro. We observed that NR boosted basal and maximal cellular aerobic and anaerobic respiration in both mouse and human myoblasts and human myotubes. Additionally, NR treatment improved the differentiating capacity of myoblasts and increased myotube size and fusion index upon stimulation of these progenitors to form multinucleated myotubes. CONCLUSION These findings support a role for NR in improving cellular energetics and functional capacity in mice, which support the translation of this work into clinical settings as a strategy for improving and/or maintaining health span during aging.
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Affiliation(s)
- Kenneth Ladd Seldeen
- Division of Geriatrics and Palliative Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo and Research Service, Veterans Affairs Western New York Healthcare System, Buffalo, NY, United States
| | - Aref Shahini
- Bioengineering Laboratory, Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Ramkumar Thiyagarajan
- Division of Geriatrics and Palliative Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo and Research Service, Veterans Affairs Western New York Healthcare System, Buffalo, NY, United States
| | - Yonas Redae
- Division of Geriatrics and Palliative Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo and Research Service, Veterans Affairs Western New York Healthcare System, Buffalo, NY, United States
| | - Merced Leiker
- Division of Geriatrics and Palliative Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo and Research Service, Veterans Affairs Western New York Healthcare System, Buffalo, NY, United States
| | - Nika Rajabian
- Bioengineering Laboratory, Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Andrew Dynka
- Division of Geriatrics and Palliative Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo and Research Service, Veterans Affairs Western New York Healthcare System, Buffalo, NY, United States
| | - Stelios T Andreadis
- Bioengineering Laboratory, Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Bruce Robert Troen
- Division of Geriatrics and Palliative Medicine, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo and Research Service, Veterans Affairs Western New York Healthcare System, Buffalo, NY, United States.
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