1
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Sessions DT, Kim KB, Kashatus JA, Churchill N, Park KS, Mayo MW, Sesaki H, Kashatus DF. Opa1 and Drp1 reciprocally regulate cristae morphology, ETC function, and NAD + regeneration in KRas-mutant lung adenocarcinoma. Cell Rep 2022; 41:111818. [PMID: 36516772 DOI: 10.1016/j.celrep.2022.111818] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 09/28/2022] [Accepted: 11/22/2022] [Indexed: 12/15/2022] Open
Abstract
Oncogenic KRas activates mitochondrial fission through Erk-mediated phosphorylation of the mitochondrial fission GTPase Drp1. Drp1 deletion inhibits tumorigenesis of KRas-driven pancreatic cancer, but the role of mitochondrial dynamics in other Ras-driven malignancies is poorly defined. Here we show that in vitro and in vivo growth of KRas-driven lung adenocarcinoma is unaffected by deletion of Drp1 but is inhibited by deletion of Opa1, the GTPase that regulates inner membrane fusion and proper cristae morphology. Mechanistically, Opa1 knockout disrupts cristae morphology and inhibits electron transport chain (ETC) assembly and activity, which inhibits tumor cell proliferation through loss of NAD+ regeneration. Simultaneous inactivation of Drp1 and Opa1 restores cristae morphology, ETC activity, and cell proliferation indicating that mitochondrial fission activity drives ETC dysfunction induced by Opa1 knockout. Our results support a model in which mitochondrial fission events disrupt cristae structure, and tumor cells with hyperactive fission activity require Opa1 activity to maintain ETC function.
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Affiliation(s)
- Dane T Sessions
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Kee-Beom Kim
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Jennifer A Kashatus
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Nikolas Churchill
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Kwon-Sik Park
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Marty W Mayo
- Department of Biochemistry and Molecular Genetics, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Hiromi Sesaki
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - David F Kashatus
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA.
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2
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Hussain SS, Tran TM, Ware TB, Luse MA, Prevost CT, Ferguson AN, Kashatus JA, Hsu KL, Kashatus DF. RalA and PLD1 promote lipid droplet growth in response to nutrient withdrawal. Cell Rep 2021; 36:109451. [PMID: 34320341 PMCID: PMC8344381 DOI: 10.1016/j.celrep.2021.109451] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 06/04/2021] [Accepted: 07/02/2021] [Indexed: 01/22/2023] Open
Abstract
Lipid droplets (LDs) are dynamic organelles that undergo dynamic changes in response to changing cellular conditions. During nutrient depletion, LD numbers increase to protect cells against toxic fatty acids generated through autophagy and provide fuel for beta-oxidation. However, the precise mechanisms through which these changes are regulated have remained unclear. Here, we show that the small GTPase RalA acts downstream of autophagy to directly facilitate LD growth during nutrient depletion. Mechanistically, RalA performs this function through phospholipase D1 (PLD1), an enzyme that converts phosphatidylcholine (PC) to phosphatidic acid (PA) and that is recruited to lysosomes during nutrient stress in a RalA-dependent fashion. RalA inhibition prevents recruitment of the LD-associated protein perilipin 3, which is required for LD growth. Our data support a model in which RalA recruits PLD1 to lysosomes during nutrient deprivation to promote the localized production of PA and the recruitment of perilipin 3 to expanding LDs.
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Affiliation(s)
- Syed S Hussain
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Tuyet-Minh Tran
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Timothy B Ware
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904, USA
| | - Melissa A Luse
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Christopher T Prevost
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Ashley N Ferguson
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Jennifer A Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Ku-Lung Hsu
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904, USA; University of Virginia Cancer Center, University of Virginia Health System, Charlottesville, VA 22903, USA
| | - David F Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA; University of Virginia Cancer Center, University of Virginia Health System, Charlottesville, VA 22903, USA.
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3
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Przanowska RK, Sobierajska E, Su Z, Jensen K, Przanowski P, Nagdas S, Kashatus JA, Kashatus DF, Bhatnagar S, Lukens JR, Dutta A. miR-206 family is important for mitochondrial and muscle function, but not essential for myogenesis in vitro. FASEB J 2020; 34:7687-7702. [PMID: 32277852 DOI: 10.1096/fj.201902855rr] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 02/05/2023]
Abstract
miR-206, miR-1a-1, and miR-1a-2 are induced during differentiation of skeletal myoblasts and promote myogenesis in vitro. miR-206 is required for skeletal muscle regeneration in vivo. Although this miRNA family is hypothesized to play an essential role in differentiation, a triple knock-out (tKO) of the three genes has not been done to test this hypothesis. We report that tKO C2C12 myoblasts generated using CRISPR/Cas9 method differentiate despite the expected derepression of the miRNA targets. Surprisingly, their mitochondrial function is diminished. tKO mice demonstrate partial embryonic lethality, most likely due to the role of miR-1a in cardiac muscle differentiation. Two tKO mice survive and grow normally to adulthood with smaller myofiber diameter, diminished physical performance, and an increase in PAX7 positive satellite cells. Thus, unlike other miRNAs important in other differentiation pathways, the miR-206 family is not absolutely essential for myogenesis and is instead a modulator of optimal differentiation of skeletal myoblasts.
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Affiliation(s)
- Roza K Przanowska
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Ewelina Sobierajska
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Zhangli Su
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Kate Jensen
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Piotr Przanowski
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Sarbajeet Nagdas
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Jennifer A Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - David F Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Sanchita Bhatnagar
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, USA.,Department of Neuroscience, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - John R Lukens
- Department of Neuroscience, School of Medicine, Center for Brain Immunology and Glia, University of Virginia, Charlottesville, VA, USA
| | - Anindya Dutta
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, USA
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4
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Nagdas S, Kashatus JA, Nascimento A, Hussain SS, Trainor RE, Pollock SR, Adair SJ, Michaels AD, Sesaki H, Stelow EB, Bauer TW, Kashatus DF. Drp1 Promotes KRas-Driven Metabolic Changes to Drive Pancreatic Tumor Growth. Cell Rep 2019; 28:1845-1859.e5. [PMID: 31412251 PMCID: PMC6711191 DOI: 10.1016/j.celrep.2019.07.031] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/03/2019] [Accepted: 07/11/2019] [Indexed: 12/13/2022] Open
Abstract
Mitochondria undergo fission and fusion to maintain homeostasis, and tumors exhibit the dysregulation of mitochondrial dynamics. We recently demonstrated that ectopic HRasG12V promotes mitochondrial fragmentation and tumor growth through Erk phosphorylation of the mitochondrial fission GTPase Dynamin-related protein 1 (Drp1). However, the role of Drp1 in the setting of endogenous oncogenic KRas remains unknown. Here, we show that Drp1 is required for KRas-driven anchorage-independent growth in fibroblasts and patient-derived pancreatic cancer cell lines, and it promotes glycolytic flux, in part through the regulation of hexokinase 2 (HK2). Furthermore, Drp1 deletion imparts a significant survival advantage in a model of KRas-driven pancreatic cancer, and tumors exhibit a strong selective pressure against complete Drp1 deletion. Rare tumors that arise in the absence of Drp1 have restored glycolysis but exhibit defective mitochondrial metabolism. This work demonstrates that Drp1 plays dual roles in KRas-driven tumor growth: supporting both glycolysis and mitochondrial function through independent mechanisms.
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Affiliation(s)
- Sarbajeet Nagdas
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Jennifer A Kashatus
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Aldo Nascimento
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Syed S Hussain
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Riley E Trainor
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Sarah R Pollock
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Sara J Adair
- Department of Surgery, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Alex D Michaels
- Department of Surgery, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Hiromi Sesaki
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Edward B Stelow
- Department of Pathology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Todd W Bauer
- Department of Surgery, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - David F Kashatus
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA.
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5
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Pollock SR, Schinlever AR, Rohani A, Kashatus JA, Kashatus DF. RalA and RalB relocalization to depolarized mitochondria depends on clathrin-mediated endocytosis and facilitates TBK1 activation. PLoS One 2019; 14:e0214764. [PMID: 30995277 PMCID: PMC6469766 DOI: 10.1371/journal.pone.0214764] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 03/19/2019] [Indexed: 01/08/2023] Open
Abstract
Healthy mitochondria use an electrochemical gradient across the inner mitochondrial membrane (IMM) to generate energy in the form of ATP. A variety of endogenous and exogenous factors can lead to transient or sustained depolarization of the IMM, including mitochondrial fission events, expression of uncoupling proteins, electron transport chain (ETC) inhibitors, or chemical uncouplers. This depolarization in turn leads to a variety of physiological responses, ranging from selective mitochondrial clearance (mitophagy) to cell death. How cells recognize and ultimately respond to depolarized mitochondria remains incompletely understood. Here we show that the small GTPases RalA and RalB both relocalize to mitochondria following depolarization in a process dependent on clathrin-mediated endocytosis (CME). Furthermore, both genetic and pharmacologic inhibition of RalA and RalB leads to an increase in the activity of the atypical IκB kinase TBK1 both basally and in response to mitochondrial depolarization. This phenotype was also observed following inhibition of Ral relocalization. Collectively, these data suggest a model in which RalA and RalB inhibit TBK1 and that relocalization of Ral to depolarized mitochondria facilitates TBK1 activation through release of this inhibition.
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Affiliation(s)
- Sarah R. Pollock
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Austin R. Schinlever
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Ali Rohani
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Jennifer A. Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - David F. Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
- * E-mail:
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6
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Wilson RJ, Drake JC, Cui D, Zhang M, Perry HM, Kashatus JA, Kusminski CM, Scherer PE, Kashatus DF, Okusa MD, Yan Z. Conditional MitoTimer reporter mice for assessment of mitochondrial structure, oxidative stress, and mitophagy. Mitochondrion 2017; 44:20-26. [PMID: 29274400 PMCID: PMC6387589 DOI: 10.1016/j.mito.2017.12.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/24/2017] [Accepted: 12/15/2017] [Indexed: 11/18/2022]
Abstract
Assessment of structural and functional changes of mitochondria is vital for biomedical research as mitochondria are the power plants essential for biological processes and tissue/organ functions. Others and we have developed a novel reporter gene, pMitoTimer, which codes for a redox sensitive mitochondrial targeted protein that switches from green fluorescence protein (GFP) to red fluorescent protein (DsRed) when oxidized. It has been shown in transfected cells, transgenic C. elegans and Drosophila m., as well as somatically transfected adult skeletal muscle that this reporter gene allows quantifiable assessment of mitochondrial structure, oxidative stress, and lysosomal targeting of mitochondria-containing autophagosomes. Here, we generated CAG-CAT-MitoTimer transgenic mice using a transgene containing MitoTimer downstream of LoxP-flanked bacterial chloramphenicol acetyltransferase (CAT) gene with stop codon under the control of the cytomegalovirus (CMV) enhancer fused to the chicken β-actin promoter (CAG). When CAG-CAT-MitoTimer mice were crossbred with various tissue-specific (muscle, adipose tissue, kidney, and pancreatic tumor) or global Cre transgenic mice, the double transgenic offspring showed MitoTimer expression in tissue-specific or global manner. Lastly, we show that hindlimb ischemia-reperfusion caused early, transient increases of mitochondrial oxidative stress, mitochondrial fragmentation and lysosomal targeting of autophagosomes containing mitochondria as well as a later reduction of mitochondrial content in skeletal muscle along with mitochondrial oxidative stress in sciatic nerve. Thus, we have generated conditional MitoTimer mice and provided proof of principle evidence of their utility to simultaneously assess mitochondrial structure, oxidative stress, and mitophagy in vivo in a tissue-specific, controllable fashion.
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Affiliation(s)
- Rebecca J Wilson
- Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, United States; Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Joshua C Drake
- Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Di Cui
- Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Mei Zhang
- Department of Medicine-Cardiovascular Medicine, University of Virginia School of Medicine, Charlottesville, VA, United States; Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Heather M Perry
- Department of Medicine-Nephrology and Center for Immunity, Inflammation, and Regenerative Medicine, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Jennifer A Kashatus
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, United States
| | | | - Philipp E Scherer
- Department of Internal Medicine, UT Southwestern, Dallas, TX, United States
| | - David F Kashatus
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Mark D Okusa
- Department of Medicine-Nephrology and Center for Immunity, Inflammation, and Regenerative Medicine, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Zhen Yan
- Department of Medicine-Cardiovascular Medicine, University of Virginia School of Medicine, Charlottesville, VA, United States; Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, VA, United States; Department of Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA, United States; Center for Skeletal Muscle Research at Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, United States.
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7
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Abstract
![]()
Mitochondrial dynamics
play an important role within several pathological
conditions, including cancer and neurological diseases. For the purpose
of identifying therapies that target aberrant regulation of the mitochondrial
dynamics machinery and characterizing the regulating signaling pathways,
there is a need for label-free means to detect the dynamic alterations
in mitochondrial morphology. We present the use of dielectrophoresis
for label-free quantification of intracellular mitochondrial modifications
that alter cytoplasmic conductivity, and these changes are benchmarked
against label-based image analysis of the mitochondrial network. This
is validated by quantifying the mitochondrial alterations that are
carried out by entirely independent means on two different cell lines:
human embryonic kidney cells and mouse embryonic fibroblasts. In both
cell lines, the inhibition of mitochondrial fission that leads to
a mitochondrial structure of higher connectivity is shown to substantially
enhance conductivity of the cell interior, as apparent from the significantly
higher positive dielectrophoresis levels in the 0.5–15 MHz
range. Using single-cell velocity tracking, we show ∼10-fold
higher positive dielectrophoresis levels at 0.5 MHz for cells with
a highly connected versus those with a highly fragmented mitochondrial
structure, suggesting the feasibility for frequency-selective dielectrophoretic
isolation of cells to aid the discovery process for development of
therapeutics targeting the mitochondrial machinery.
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Affiliation(s)
- Ali Rohani
- Department of Electrical and Computer Engineering, University of Virginia , Charlottesville, Virginia 22904, United States
| | - John H Moore
- Department of Electrical and Computer Engineering, University of Virginia , Charlottesville, Virginia 22904, United States
| | - Jennifer A Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine , Charlottesville, Virginia 22908, United States
| | - Hiromi Sesaki
- Department of Cell Biology, Johns Hopkins University School of Medicine , Baltimore, Maryland 21205, United States
| | - David F Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia School of Medicine , Charlottesville, Virginia 22908, United States
| | - Nathan S Swami
- Department of Electrical and Computer Engineering, University of Virginia , Charlottesville, Virginia 22904, United States
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8
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Kashatus JA, Nascimento A, Myers LJ, Sher A, Byrne FL, Hoehn KL, Counter CM, Kashatus DF. Erk2 phosphorylation of Drp1 promotes mitochondrial fission and MAPK-driven tumor growth. Mol Cell 2015; 57:537-51. [PMID: 25658205 DOI: 10.1016/j.molcel.2015.01.002] [Citation(s) in RCA: 477] [Impact Index Per Article: 53.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 11/20/2014] [Accepted: 12/29/2014] [Indexed: 02/08/2023]
Abstract
Ras is mutated in up to 30% of cancers, including 90% of pancreatic ductal adenocarcinomas, causing it to be constitutively GTP-bound, and leading to activation of downstream effectors that promote a tumorigenic phenotype. As targeting Ras directly is difficult, there is a significant effort to understand the downstream biological processes that underlie its protumorigenic activity. Here, we show that expression of oncogenic Ras or direct activation of the MAPK pathway leads to increased mitochondrial fragmentation and that blocking this phenotype, through knockdown of the mitochondrial fission-mediating GTPase Drp1, inhibits tumor growth. This fission is driven by Erk2-mediated phosphorylation of Drp1 on Serine 616, and both this phosphorylation and mitochondrial fragmentation are increased in human pancreatic cancer. Finally, this phosphorylation is required for Ras-associated mitochondrial fission, and its inhibition is sufficient to block xenograft growth. Collectively, these data suggest mitochondrial fission may be a target for treating MAPK-driven malignancies.
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Affiliation(s)
- Jennifer A Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Aldo Nascimento
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Lindsey J Myers
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Annie Sher
- Department of Pharmacology and Cancer Biology, Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710, USA
| | - Frances L Byrne
- Department of Pharmacology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Kyle L Hoehn
- Department of Pharmacology, University of Virginia Health System, Charlottesville, VA 22908, USA
| | - Christopher M Counter
- Department of Pharmacology and Cancer Biology, Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710, USA
| | - David F Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA 22908, USA.
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9
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Trump RP, Bresciani S, Cooper AWJ, Tellam JP, Wojno J, Blaikley J, Orband-Miller LA, Kashatus JA, Boudjelal M, Dawson HC, Loudon A, Ray D, Grant D, Farrow SN, Willson TM, Tomkinson NCO. Optimized chemical probes for REV-ERBα. J Med Chem 2013; 56:4729-37. [PMID: 23656296 DOI: 10.1021/jm400458q] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
REV-ERBα has emerged as an important target for regulation of circadian rhythm and its associated physiology. Herein, we report on the optimization of a series of REV-ERBα agonists based on GSK4112 (1) for potency, selectivity, and bioavailability. (1) Potent REV-ERBα agonists 4, 10, 16, and 23 are detailed for their ability to suppress BMAL and IL-6 expression from human cells while also demonstrating excellent selectivity over LXRα. Amine 4 demonstrated in vivo bioavailability after either iv or oral dosing.
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Affiliation(s)
- Ryan P Trump
- Molecular Discovery Research, GlaxoSmithKline, Research Triangle Park, North Carolina 27709-3398, USA.
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10
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Katamreddy SR, Carpenter AJ, Ammala CE, Boros EE, Brashear RL, Briscoe CP, Bullard SR, Caldwell RD, Conlee CR, Croom DK, Hart SM, Heyer DO, Johnson PR, Kashatus JA, Minick DJ, Peckham GE, Ross SA, Roller SG, Samano VA, Sauls HR, Tadepalli SM, Thompson JB, Xu Y, Way JM. Discovery of 6,7-Dihydro-5H-pyrrolo[2,3-a]pyrimidines as Orally Available G Protein-Coupled Receptor 119 Agonists. J Med Chem 2012; 55:10972-94. [DOI: 10.1021/jm301404a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Subba R. Katamreddy
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Andrew J. Carpenter
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Carina E. Ammala
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Eric E. Boros
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Ron L. Brashear
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Celia P. Briscoe
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Sarah R. Bullard
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Richard D. Caldwell
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Christopher R. Conlee
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Dallas K. Croom
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Shane M. Hart
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Dennis O. Heyer
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Paul R. Johnson
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Jennifer A. Kashatus
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Doug J. Minick
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Gregory E. Peckham
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Sean A. Ross
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Shane G. Roller
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Vicente A. Samano
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Howard R. Sauls
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Sarva M. Tadepalli
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - James B. Thompson
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - Yun Xu
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
| | - James M. Way
- GlaxoSmithKline Research & Development, Five Moore Drive, Research Triangle Park, North Carolina 27709, United States
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