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Kinnunen PC, Humphries BA, Luker GD, Luker KE, Linderman JJ. Characterizing heterogeneous single-cell dose responses computationally and experimentally using threshold inhibition surfaces and dose-titration assays. NPJ Syst Biol Appl 2024; 10:42. [PMID: 38637530 PMCID: PMC11026493 DOI: 10.1038/s41540-024-00369-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 04/08/2024] [Indexed: 04/20/2024] Open
Abstract
Single cancer cells within a tumor exhibit variable levels of resistance to drugs, ultimately leading to treatment failures. While tumor heterogeneity is recognized as a major obstacle to cancer therapy, standard dose-response measurements for the potency of targeted kinase inhibitors aggregate populations of cells, obscuring intercellular variations in responses. In this work, we develop an analytical and experimental framework to quantify and model dose responses of individual cancer cells to drugs. We first explore the connection between population and single-cell dose responses using a computational model, revealing that multiple heterogeneous populations can yield nearly identical population dose responses. We demonstrate that a single-cell analysis method, which we term a threshold inhibition surface, can differentiate among these populations. To demonstrate the applicability of this method, we develop a dose-titration assay to measure dose responses in single cells. We apply this assay to breast cancer cells responding to phosphatidylinositol-3-kinase inhibition (PI3Ki), using clinically relevant PI3Kis on breast cancer cell lines expressing fluorescent biosensors for kinase activity. We demonstrate that MCF-7 breast cancer cells exhibit heterogeneous dose responses with some cells requiring over ten-fold higher concentrations than the population average to achieve inhibition. Our work reimagines dose-response relationships for cancer drugs in an emerging paradigm of single-cell tumor heterogeneity.
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Affiliation(s)
- Patrick C Kinnunen
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Brock A Humphries
- Department of Radiology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Gary D Luker
- Department of Radiology, University of Michigan, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kathryn E Luker
- Department of Radiology, University of Michigan, Ann Arbor, MI, 48109, USA
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jennifer J Linderman
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.
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2
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Humphries BA, Zhang A, Buschhaus JM, Bevoor A, Farfel A, Rajendran S, Cutter AC, Luker GD. Enhanced mitochondrial fission inhibits triple-negative breast cancer cell migration through an ROS-dependent mechanism. iScience 2023; 26:106788. [PMID: 37235049 PMCID: PMC10206500 DOI: 10.1016/j.isci.2023.106788] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/27/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
Mitochondria produce reactive oxygen species (ROS), which function in signal transduction. Mitochondrial dynamics, encompassing morphological shifts between fission and fusion, can directly impact ROS levels in cancer cells. In this study, we identified an ROS-dependent mechanism for how enhanced mitochondrial fission inhibits triple negative breast cancer (TNBC) cell migration. We found that enforcing mitochondrial fission in TNBC resulted in an increase in intracellular ROS levels and reduced cell migration and the formation of actin-rich migratory structures. Consistent with mitochondrial fission, increasing ROS levels in cells inhibited cell migration. Conversely, reducing ROS levels with either a global or mitochondrially targeted scavenger overcame the inhibitory effects of mitochondrial fission. Mechanistically, we found that the ROS sensitive SHP-1/2 phosphatases partially regulate inhibitory effects of mitochondrial fission on TNBC migration. Overall, our work reveals the inhibitory effects of ROS in TNBC and supports mitochondrial dynamics as a potential therapeutic target for cancer.
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Affiliation(s)
- Brock A. Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Anne Zhang
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Johanna M. Buschhaus
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Avinash Bevoor
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Alex Farfel
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Shrila Rajendran
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Alyssa C. Cutter
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Gary D. Luker
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI 48109, USA
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3
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Hiraki HL, Matera DL, Wang WY, Prabhu ES, Zhang Z, Midekssa F, Argento AE, Buschhaus JM, Humphries BA, Luker GD, Pena-Francesch A, Baker BM. Fiber density and matrix stiffness modulate distinct cell migration modes in a 3D stroma mimetic composite hydrogel. Acta Biomater 2023; 163:378-391. [PMID: 36179980 PMCID: PMC10043045 DOI: 10.1016/j.actbio.2022.09.043] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 09/12/2022] [Accepted: 09/16/2022] [Indexed: 01/26/2023]
Abstract
The peritumoral stroma is a complex 3D tissue that provides cells with myriad biophysical and biochemical cues. Histologic observations suggest that during metastatic spread of carcinomas, these cues influence transformed epithelial cells, prompting a diversity of migration modes spanning single cell and multicellular phenotypes. Purported consequences of these variations in tumor escape strategies include differential metastatic capability and therapy resistance. Therefore, understanding how cues from the peritumoral stromal microenvironment regulate migration mode has both prognostic and therapeutic value. Here, we utilize a synthetic stromal mimetic in which matrix fiber density and bulk hydrogel mechanics can be orthogonally tuned to investigate the contribution of these two key matrix attributes on MCF10A migration mode phenotypes, epithelial-mesenchymal transition (EMT), and invasive potential. We develop an automated computational image analysis framework to extract migratory phenotypes from fluorescent images and determine 3D migration metrics relevant to metastatic spread. Using this analysis, we find that matrix fiber density and bulk hydrogel mechanics distinctly contribute to a variety of MCF10A migration modes including amoeboid, single mesenchymal, clusters, and strands. We identify combinations of physical and soluble cues that induce a variety of migration modes originating from the same MCF10A spheroid and use these settings to examine a functional consequence of migration mode -resistance to apoptosis. We find that cells migrating as strands are more resistant to staurosporine-induced apoptosis than either disconnected clusters or individual invading cells. Improved models of the peritumoral stromal microenvironment and understanding of the relationships between matrix attributes and cell migration mode can aid ongoing efforts to identify effective cancer therapeutics that address cell plasticity-based therapy resistances. STATEMENT OF SIGNIFICANCE: Stromal extracellular matrix structure dictates both cell homeostasis and activation towards migratory phenotypes. However decoupling the effects of myriad biophysical cues has been difficult to achieve. Here, we encapsulate electrospun fiber segments within an amorphous hydrogel to create a fiber-reinforced hydrogel composite in which fiber density and hydrogel stiffness can be orthogonally tuned. Quantification of 3D cell migration reveal these two parameters uniquely contribute to a diversity of migration phenotypes spanning amoeboid, single mesenchymal, multicellular cluster, and collective strand. By tuning biophysical and biochemical cues to elicit heterogeneous migration phenotypes, we find that collective strands best resist apoptosis. This work establishes a composite approach to modulate fibrous topography and bulk hydrogel mechanics and identified biomaterial parameters to direct distinct 3D cell migration phenotypes.
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Affiliation(s)
- Harrison L Hiraki
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Daniel L Matera
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States
| | - William Y Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Eashan S Prabhu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Zane Zhang
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 481095, United States
| | - Firaol Midekssa
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Anna E Argento
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Johanna M Buschhaus
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Radiology, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Brock A Humphries
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Radiology, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Gary D Luker
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Radiology, University of Michigan, Ann Arbor, MI, 48109, United States
| | - Abdon Pena-Francesch
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 481095, United States
| | - Brendon M Baker
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, 48109, United States.
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4
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Buschhaus JM, Rajendran S, Chen S, Wharram BL, Bevoor AS, Cutter AC, Humphries BA, Robison TH, Farfel AP, Luker GD. Bone Marrow Mesenchymal Stem Cells Induce Metabolic Plasticity in Estrogen Receptor-Positive Breast Cancer. Mol Cancer Res 2023; 21:458-471. [PMID: 36735350 PMCID: PMC10159984 DOI: 10.1158/1541-7786.mcr-22-0451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 12/06/2022] [Accepted: 02/01/2023] [Indexed: 02/04/2023]
Abstract
Cancer cells reprogram energy metabolism through metabolic plasticity, adapting ATP-generating pathways in response to treatment or microenvironmental changes. Such adaptations enable cancer cells to resist standard therapy. We employed a coculture model of estrogen receptor-positive (ER+) breast cancer and mesenchymal stem cells (MSC) to model interactions of cancer cells with stromal microenvironments. Using single-cell endogenous and engineered biosensors for cellular metabolism, coculture with MSCs increased oxidative phosphorylation, intracellular ATP, and resistance of cancer cells to standard therapies. Cocultured cancer cells had increased MCT4, a lactate transporter, and were sensitive to the MCT1/4 inhibitor syrosingopine. Combining syrosingopine with fulvestrant, a selective estrogen receptor degrading drug, overcame resistance of ER+ breast cancer cells in coculture with MSCs. Treatment with antiestrogenic therapy increased metabolic plasticity and maintained intracellular ATP levels, while MCT1/4 inhibition successfully limited metabolic transitions and decreased ATP levels. Furthermore, MCT1/4 inhibition decreased heterogenous metabolic treatment responses versus antiestrogenic therapy. These data establish MSCs as a mediator of cancer cell metabolic plasticity and suggest metabolic interventions as a promising strategy to treat ER+ breast cancer and overcome resistance to standard clinical therapies. IMPLICATIONS This study reveals how MSCs reprogram metabolism of ER+ breast cancer cells and point to MCT4 as potential therapeutic target to overcome resistance to antiestrogen drugs.
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Affiliation(s)
- Johanna M. Buschhaus
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel, Blvd., Ann Arbor, MI, 48109-2099, USA
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Shrila Rajendran
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Siyi Chen
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Bryan L. Wharram
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Avinash S. Bevoor
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Alyssa C. Cutter
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Brock A. Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Tanner H. Robison
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel, Blvd., Ann Arbor, MI, 48109-2099, USA
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Alex P. Farfel
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Gary D. Luker
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel, Blvd., Ann Arbor, MI, 48109-2099, USA
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
- Department of Microbiology and Immunology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
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5
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Robison TH, Solipuram M, Heist K, Amouzandeh G, Lee WY, Humphries BA, Buschhaus JM, Bevoor A, Zhang A, Luker KE, Pettit K, Talpaz M, Malyarenko D, Chenevert TL, Ross BD, Luker GD. Multi-parametric MRI to quantify disease and treatment response in mice with myeloproliferative neoplasms. JCI Insight 2022; 7:161457. [PMID: 35998053 PMCID: PMC9675444 DOI: 10.1172/jci.insight.161457] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Histopathology, the standard method to assess BM in hematologic malignancies such as myeloproliferative neoplasms (MPNs), suffers from notable limitations in both research and clinical settings. BM biopsies in patients fail to detect disease heterogeneity, may yield a nondiagnostic sample, and cannot be repeated frequently in clinical oncology. Endpoint histopathology precludes monitoring disease progression and response to therapy in the same mouse over time, missing likely variations among mice. To overcome these shortcomings, we used MRI to measure changes in cellularity, macromolecular constituents, and fat versus hematopoietic cells in BM using diffusion-weighted imaging (DWI), magnetization transfer, and chemical shift–encoded fat imaging. Combining metrics from these imaging parameters revealed dynamic alterations in BM following myeloablative radiation and transplantation. In a mouse MPLW515L BM transplant model of MPN, MRI detected effects of a JAK2 inhibitor, ruxolitinib, within 5 days of initiating treatment and identified differing kinetics of treatment responses in subregions of the tibia. Histopathology validated the MRI results for BM composition and heterogeneity. Anatomic MRI scans also showed reductions in spleen volume during treatment. These findings establish an innovative, clinically translatable MRI approach to quantify spatial and temporal changes in BM in MPN.
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Affiliation(s)
- Tanner H Robison
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, United States of America
| | - Manisha Solipuram
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Kevin Heist
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Ghoncheh Amouzandeh
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Winston Y Lee
- Department of Pathology, University of Michigan, Ann Arbor, United States of America
| | - Brock A Humphries
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Johanna M Buschhaus
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, United States of America
| | - Avinash Bevoor
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Anne Zhang
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Kathryn E Luker
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Kristen Pettit
- Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, United States of America
| | - Moshe Talpaz
- Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, United States of America
| | - Dariya Malyarenko
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Thomas L Chenevert
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Brian D Ross
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
| | - Gary D Luker
- Department of Radiology, University of Michigan, Ann Arbor, United States of America
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6
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Buschhaus JM, Rajendran S, Humphries BA, Cutter AC, Muñiz AJ, Ciavattone NG, Buschhaus AM, Cañeque T, Nwosu ZC, Sahoo D, Bevoor AS, Shah YM, Lyssiotis CA, Ghosh P, Wicha MS, Rodriguez R, Luker GD. Effects of iron modulation on mesenchymal stem cell-induced drug resistance in estrogen receptor-positive breast cancer. Oncogene 2022; 41:3705-3718. [PMID: 35732800 PMCID: PMC9288981 DOI: 10.1038/s41388-022-02385-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [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: 03/07/2022] [Revised: 05/31/2022] [Accepted: 06/13/2022] [Indexed: 01/03/2023]
Abstract
Patients with estrogen receptor-positive (ER+) breast cancer, the most common subtype, remain at risk for lethal metastatic disease years after diagnosis. Recurrence arises partly because tumor cells in bone marrow become resistant to estrogen-targeted therapy. Here, we utilized a co-culture model of bone marrow mesenchymal stem cells (MSCs) and ER+ breast cancer cells to recapitulate interactions of cancer cells in bone marrow niches. ER+ breast cancer cells in direct contact with MSCs acquire cancer stem-like (CSC) phenotypes with increased resistance to standard antiestrogenic drugs. We confirmed that co-culture with MSCs increased labile iron in breast cancer cells, a phenotype associated with CSCs and disease progression. Clinically approved iron chelators and in-house lysosomal iron-targeting compounds restored sensitivity to antiestrogenic therapy. These findings establish iron modulation as a mechanism to reverse MSC-induced drug resistance and suggest iron modulation in combination with estrogen-targeted therapy as a promising, translatable strategy to treat ER+ breast cancer.
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Affiliation(s)
- Johanna M Buschhaus
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel, Blvd., Ann Arbor, MI, 48109-2099, USA
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Shrila Rajendran
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Brock A Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Alyssa C Cutter
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Ayşe J Muñiz
- Macromolecular Science and Engineering and Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109-2200, USA
| | - Nicholas G Ciavattone
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Alexander M Buschhaus
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Tatiana Cañeque
- Institut Curie, Chemical Biology of Cancer Laboratory, CNRS UMR 3666, INSERM U1143, PSL Research University, Paris, France
| | - Zeribe C Nwosu
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Debashis Sahoo
- Pediatrics, and Computer Science and Engineering, University of California San Diego, La Jolla, CA, USA
| | - Avinash S Bevoor
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Yatrik M Shah
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA
- Division of Gastroenterology, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Costas A Lyssiotis
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Pradipta Ghosh
- Departments of Medicine and Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, USA
| | - Max S Wicha
- Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Raphaël Rodriguez
- Institut Curie, Chemical Biology of Cancer Laboratory, CNRS UMR 3666, INSERM U1143, PSL Research University, Paris, France
| | - Gary D Luker
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel, Blvd., Ann Arbor, MI, 48109-2099, USA.
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
- Department of Microbiology and Immunology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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7
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Humphries BA, Aliabouzar M, Quesada C, Bevoor A, Ho KKY, Farfel A, Buschhaus JM, Rajendran S, Fabiilli ML, Luker GD. Ultrasound-Induced Mechanical Compaction in Acoustically Responsive Scaffolds Promotes Spatiotemporally Modulated Signaling in Triple Negative Breast Cancer. Adv Healthc Mater 2022; 11:e2101672. [PMID: 35106975 PMCID: PMC9117464 DOI: 10.1002/adhm.202101672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 08/13/2021] [Revised: 01/10/2022] [Indexed: 11/06/2022]
Abstract
Cancer cells continually sense and respond to mechanical cues from the extracellular matrix (ECM). Interaction with the ECM can alter intracellular signaling cascades, leading to changes in processes that promote cancer cell growth, migration, and survival. The present study used a recently developed composite hydrogel composed of a fibrin matrix and phase-shift emulsion, termed an acoustically responsive scaffold (ARS), to investigate effects of local mechanical properties on breast cancer cell signaling. Treatment of ARSs with focused ultrasound drives acoustic droplet vaporization (ADV) in a spatiotemporally controlled manner, inducing local compaction and stiffening of the fibrin matrix adjacent to the matrix-bubble interface. Combining ARSs and live single cell imaging of triple-negative breast cancer cells, it is discovered that both basal and growth-factor stimulated activities of protein kinase B (also known as Akt) and extracellular signal-regulated kinase (ERK), two major kinases driving cancer progression, negatively correlate with increasing distance from the ADV-induced bubble both in vitro and in a mouse model. Together, these data demonstrate that local changes in ECM compaction regulate Akt and ERK signaling in breast cancer and support further applications of the novel ARS technology to analyze spatial and temporal effects of ECM mechanics on cell signaling and cancer biology.
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Affiliation(s)
- Brock A. Humphries
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
- Center for Molecular Imaging University of Michigan Ann Arbor MI 48109 USA
| | - Mitra Aliabouzar
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
| | - Carole Quesada
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
| | - Avinash Bevoor
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
- Center for Molecular Imaging University of Michigan Ann Arbor MI 48109 USA
| | - Kenneth K. Y. Ho
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
- Center for Molecular Imaging University of Michigan Ann Arbor MI 48109 USA
| | - Alex Farfel
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
- Center for Molecular Imaging University of Michigan Ann Arbor MI 48109 USA
| | - Johanna M. Buschhaus
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
- Center for Molecular Imaging University of Michigan Ann Arbor MI 48109 USA
- Department of Biomedical Engineering University of Michigan Ann Arbor MI 48109 USA
| | - Shrila Rajendran
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
- Center for Molecular Imaging University of Michigan Ann Arbor MI 48109 USA
| | - Mario L. Fabiilli
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
- Department of Biomedical Engineering University of Michigan Ann Arbor MI 48109 USA
- Applied Physics Program University of Michigan Ann Arbor MI 48109 USA
| | - Gary D. Luker
- Department of Radiology University of Michigan Ann Arbor MI 48109 USA
- Center for Molecular Imaging University of Michigan Ann Arbor MI 48109 USA
- Department of Biomedical Engineering University of Michigan Ann Arbor MI 48109 USA
- Department of Microbiology and Immunology University of Michigan Ann Arbor MI 48109 USA
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8
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Humphries BA, Hwang PY, Kendrick AA, Kulkarni RP, Pozzar RA, San Martin R. Overstretched and overlooked: solving challenges faced by early-career investigators after the pandemic. Trends Cancer 2021; 7:879-882. [PMID: 34462237 PMCID: PMC8391088 DOI: 10.1016/j.trecan.2021.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/27/2021] [Accepted: 07/30/2021] [Indexed: 12/05/2022]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has had a detrimental effect on research. However, little has been done to identify and solve the unique challenges faced by early career investigators (ECIs). As a group of American Cancer Society-funded ECIs, we provide recommendations for solving these challenges in the aftermath of the pandemic.
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Affiliation(s)
- Brock A Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - Priscilla Y Hwang
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA.
| | - Agnieszka A Kendrick
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA, USA.
| | - Rajan P Kulkarni
- Department of Dermatology, Oregon Health and Science University (OHSU), Portland, OR, USA; Department of Biomedical Engineering, Oregon Health and Science University (OHSU), Portland, OR, USA; Cancer Early Detection Advanced Research Center (CEDAR), Knight Cancer Institute, Oregon Health and Science University (OHSU), Portland, OR, USA; Operative Care Division, VA Portland Health Care System (VAPORHCS), Portland, OR, USA.
| | - Rachel A Pozzar
- Phyllis F. Cantor Center for Research in Nursing and Patient Care Services, Dana-Farber Cancer Institute, Boston, MA, USA.
| | - Rebeca San Martin
- Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, TN, USA.
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9
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Spinosa PC, Kinnunen PC, Humphries BA, Luker GD, Luker KE, Linderman JJ. Pre-existing Cell States Control Heterogeneity of Both EGFR and CXCR4 Signaling. Cell Mol Bioeng 2021; 14:49-64. [PMID: 33643466 PMCID: PMC7878609 DOI: 10.1007/s12195-020-00640-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 07/22/2020] [Indexed: 10/23/2022] Open
Abstract
INTRODUCTION CXCR4 and epidermal growth factor receptor (EGFR) represent two major families of receptors, G-protein coupled receptors and receptor tyrosine kinases, with central functions in cancer. While utilizing different upstream signaling molecules, both CXCR4 and EGFR activate kinases ERK and Akt, although single-cell activation of these kinases is markedly heterogeneous. One hypothesis regarding the origin of signaling heterogeneity proposes that intercellular variations arise from differences in pre-existing intracellular states set by extrinsic noise. While pre-existing cell states vary among cells, each pre-existing state defines deterministic signaling outputs to downstream effectors. Understanding causes of signaling heterogeneity will inform treatment of cancers with drugs targeting drivers of oncogenic signaling. METHODS We built a single-cell computational model to predict Akt and ERK responses to CXCR4- and EGFR-mediated stimulation. We investigated signaling heterogeneity through these receptors and tested model predictions using quantitative, live-cell time-lapse imaging. RESULTS We show that the pre-existing cell state predicts single-cell signaling through both CXCR4 and EGFR. Computational modeling reveals that the same set of pre-existing cell states explains signaling heterogeneity through both EGFR and CXCR4 at multiple doses of ligands and in two different breast cancer cell lines. The model also predicts how phosphatidylinositol-3-kinase (PI3K) targeted therapies potentiate ERK signaling in certain breast cancer cells and that low level, combined inhibition of MEK and PI3K ablates potentiated ERK signaling. CONCLUSIONS Our data demonstrate that a conserved motif exists for EGFR and CXCR4 signaling and suggest potential clinical utility of the computational model to optimize therapy.
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Affiliation(s)
- Phillip C. Spinosa
- Department of Chemical Engineering, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI 48109-2800 USA
| | - Patrick C. Kinnunen
- Department of Chemical Engineering, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI 48109-2800 USA
| | - Brock A. Humphries
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI 48109 USA
| | - Gary D. Luker
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI 48109 USA
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI USA 48109
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI USA 48109
| | - Kathryn E. Luker
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI 48109 USA
- Department of Radiology, Center for Molecular Imaging, University of Michigan, 109 Zina Pitcher Place, A526 BSRB, Ann Arbor, MI 48109-2200 USA
| | - Jennifer J. Linderman
- Department of Chemical Engineering, University of Michigan, 2800 Plymouth Road, Ann Arbor, MI 48109-2800 USA
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI USA 48109
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10
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Eckley SS, Buschhaus JM, Humphries BA, Robison TH, Luker KE, Luker GD. Short-Term Environmental Conditioning Enhances Tumorigenic Potential of Triple-Negative Breast Cancer Cells. ACTA ACUST UNITED AC 2020; 5:346-357. [PMID: 31893233 PMCID: PMC6935992 DOI: 10.18383/j.tom.2019.00019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Tumor microenvironments expose cancer cells to heterogeneous, dynamic environments by shifting availability of nutrients, growth factors, and metabolites. Cells integrate various inputs to generate cellular memory that determines trajectories of subsequent phenotypes. Here we report that short-term exposure of triple-negative breast cancer cells to growth factors or targeted inhibitors regulates subsequent tumor initiation. Using breast cancer cells with different driver mutations, we conditioned cells lines with various stimuli for 4 hours before implanting these cells as tumor xenografts and quantifying tumor progression by means of bioluminescence imaging. In the orthotopic model, conditioning a low number of cancer cells with fetal bovine serum led to enhancement of tumor-initiating potential, tumor volume, and liver metastases. Epidermal growth factor and the mTORC1 inhibitor ridaforolimus produced similar but relatively reduced effects on tumorigenic potential. These data show that a short-term stimulus increases tumorigenic phenotypes based on cellular memory. Conditioning regimens failed to alter proliferation or adhesion of cancer cells in vitro or kinase signaling through Akt and ERK measured by multiphoton microscopy in vivo, suggesting that other mechanisms enhanced tumorigenesis. Given the dynamic nature of the tumor environment and time-varying concentrations of small-molecule drugs, this work highlights how variable conditions in tumor environments shape tumor formation, metastasis, and response to therapy.
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Affiliation(s)
- Samantha S Eckley
- Unit for Laboratory Animal Medicine, University of Michigan Medical School, Ann Arbor, MI
| | - Johanna M Buschhaus
- Department of Biomedical Engineering, University of Michigan College of Engineering and Medical School, Ann Arbor, MI.,Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI; and
| | - Brock A Humphries
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI; and
| | - Tanner H Robison
- Department of Biomedical Engineering, University of Michigan College of Engineering and Medical School, Ann Arbor, MI.,Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI; and
| | - Kathryn E Luker
- Department of Biomedical Engineering, University of Michigan College of Engineering and Medical School, Ann Arbor, MI
| | - Gary D Luker
- Department of Biomedical Engineering, University of Michigan College of Engineering and Medical School, Ann Arbor, MI.,Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI; and.,Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI
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11
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Buschhaus JM, Muniz AJ, Luo M, Burnett JP, Truchan NA, Brooks MD, Humphries BA, Luker KE, Lahann J, Sun D, Wicha MS, Luker GD. Abstract 5727: Metabolic status and adaptability of breast cancer stem cells. Cancer Res 2020. [DOI: 10.1158/1538-7445.am2020-5727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Breast cancer stem cells (BCSCs) represent the subpopulation of malignant cells that cause tumor initiation, metastasis, and recurrence. BCSCs resist therapy with radiation and standard drugs, emphasizing the need to identify new vulnerabilities as therapeutic targets. Here, we investigated the metabolism of BCSCs at single-cell resolution using molecular imaging and scRNA sequencing techniques. We imaged retention of the fluorescent dye PKH26 or expression of a CRISPR/Cas9-engineered ALDH1A3-mCherry promoter-reporter to identify BCSCs and metabolic state of cells by two-photon microscopy with fluorescence lifetime imaging (FLIM) of endogenous NADH. We previously reported that sorted BCSCs exhibited enhanced metabolic plasticity relative to bulk tumor cells in 2D culture and rapidly metabolically adapted to the glycolysis inhibitor 2-deoxyglucose (2DG). Since cells rewire signaling and metabolism in 3D environments, we utilized two-photon microscopy to quantify metabolism in secondary mammospheres and living animals. In both intact spheres and orthotopic tumor xenografts, BCSCs marked by either fluorescent reporter utilized glycolysis to a greater extent than bulk cancer cells. We validated our findings by correlating cellular entropy as a marker for cancer stem cells with metabolic pathway preferences on a single-cell basis. When treated with 2DG, mammospheres showed increased OXPHOS and a significant decrease in the percentage of ALDH1A3-mCherry+ cells. These data 1) highlight capabilities of FLIM to measure the metabolism of single cancer cells in physiologic environments; 2) correlate molecular phenotypes with real-time molecular imaging profiles of metabolism and stem-ness; and 3) reveal that BCSCs rely on glycolysis, suggesting a potential target for metabolic therapy.
Citation Format: Johanna M. Buschhaus, Ayse J. Muniz, Ming Luo, Joseph P. Burnett, Nathan A. Truchan, Michael D. Brooks, Brock A. Humphries, Kathy E. Luker, Joerg Lahann, Duxin Sun, Max S. Wicha, Gary D. Luker. Metabolic status and adaptability of breast cancer stem cells [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 5727.
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Affiliation(s)
| | | | - Ming Luo
- University of Michigan, Ann Arbor, MI
| | | | | | | | | | | | | | - Duxin Sun
- University of Michigan, Ann Arbor, MI
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12
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Buschhaus JM, Humphries BA, Eckley SS, Robison TH, Cutter AC, Rajendran S, Haley HR, Bevoor AS, Luker KE, Luker GD. Targeting disseminated estrogen-receptor-positive breast cancer cells in bone marrow. Oncogene 2020; 39:5649-5662. [PMID: 32678295 PMCID: PMC7442734 DOI: 10.1038/s41388-020-01391-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 01/02/2020] [Revised: 06/08/2020] [Accepted: 07/07/2020] [Indexed: 12/19/2022]
Abstract
Estrogen receptor-positive (ER+) breast cancer can recur up to 20 years after initial diagnosis. Delayed recurrences arise from disseminated tumors cells (DTCs) in sites such as bone marrow that remain quiescent during endocrine therapy and subsequently proliferate to produce clinically detectable metastases. Identifying therapies that eliminate DTCs and/or effectively target cells transitioning to proliferation promises to reduce risk of recurrence. To tackle this problem, we utilized a 3D co-culture model incorporating ER+ breast cancer cells and bone marrow mesenchymal stem cells to represent DTCs in a bone marrow niche. 3D co-cultures maintained cancer cells in a quiescent, viable state as measured by both single-cell and population-scale imaging. Single-cell imaging methods for metabolism by fluorescence lifetime (FLIM) of NADH and signaling by kinases Akt and ERK revealed that breast cancer cells utilized oxidative phosphorylation and signaling by Akt to a greater extent both in 3D co-cultures and a mouse model of ER+ breast cancer cells in bone marrow. Using our 3D co-culture model, we discovered that combination therapies targeting oxidative phosphorylation via the thioredoxin reductase (TrxR) inhibitor, D9, and the Akt inhibitor, MK-2206, preferentially eliminated breast cancer cells without altering viability of bone marrow stromal cells. Treatment of mice with disseminated ER+ human breast cancer showed that D9 plus MK-2206 blocked formation of new metastases more effectively than tamoxifen. These data establish an integrated experimental system to investigate DTCs in bone marrow and identify combination therapy against metabolic and kinase targets as a promising approach to effectively target these cells and reduce risk of recurrence in breast cancer.
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Affiliation(s)
- Johanna M Buschhaus
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel, Blvd., Ann Arbor, MI, 48109-2099, USA
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Brock A Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Samantha S Eckley
- Unit for Laboratory Animal Medicine, University of Michigan, 412 Victor Vaughan, Ann Arbor, MI, 48109-2200, USA
- Office of Animal Resources, University of Iowa, Iowa City, IA, USA
| | - Tanner H Robison
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel, Blvd., Ann Arbor, MI, 48109-2099, USA
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Alyssa C Cutter
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Shrila Rajendran
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Henry R Haley
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Avinash S Bevoor
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Kathryn E Luker
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA
| | - Gary D Luker
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel, Blvd., Ann Arbor, MI, 48109-2099, USA.
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
- Department of Microbiology and Immunology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.
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13
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Humphries BA, Cutter AC, Buschhaus JM, Chen YC, Qyli T, Palagama DSW, Eckley S, Robison TH, Bevoor A, Chiang B, Haley HR, Sahoo S, Spinosa PC, Neale DB, Boppisetti J, Sahoo D, Ghosh P, Lahann J, Ross BD, Yoon E, Luker KE, Luker GD. Enhanced mitochondrial fission suppresses signaling and metastasis in triple-negative breast cancer. Breast Cancer Res 2020; 22:60. [PMID: 32503622 PMCID: PMC7275541 DOI: 10.1186/s13058-020-01301-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [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: 03/23/2020] [Accepted: 05/20/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Mitochondrial dynamics underlies malignant transformation, cancer progression, and response to treatment. Current research presents conflicting evidence for functions of mitochondrial fission and fusion in tumor progression. Here, we investigated how mitochondrial fission and fusion states regulate underlying processes of cancer progression and metastasis in triple-negative breast cancer (TNBC). METHODS We enforced mitochondrial fission and fusion states through chemical or genetic approaches and measured migration and invasion of TNBC cells in 2D and 3D in vitro models. We also utilized kinase translocation reporters (KTRs) to identify single cell effects of mitochondrial state on signaling cascades, PI3K/Akt/mTOR and Ras/Raf/MEK/ERK, commonly activated in TNBC. Furthermore, we determined effects of fission and fusion states on metastasis, bone destruction, and signaling in mouse models of breast cancer. RESULTS Enforcing mitochondrial fission through chemical or genetic approaches inhibited migration, invasion, and metastasis in TNBC. Breast cancer cells with predominantly fissioned mitochondria exhibited reduced activation of Akt and ERK both in vitro and in mouse models of breast cancer. Treatment with leflunomide, a potent activator of mitochondrial fusion proteins, overcame inhibitory effects of fission on migration, signaling, and metastasis. Mining existing datasets for breast cancer revealed that increased expression of genes associated with mitochondrial fission correlated with improved survival in human breast cancer. CONCLUSIONS In TNBC, mitochondrial fission inhibits cellular processes and signaling pathways associated with cancer progression and metastasis. These data suggest that therapies driving mitochondrial fission may benefit patients with breast cancer.
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Affiliation(s)
- Brock A Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Alyssa C Cutter
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Johanna M Buschhaus
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Yu-Chih Chen
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
- Comprehensive Cancer Center, University of Michigan, Ann Arbor, MI, USA
- Forbes Institute for Cancer Discovery, University of Michigan, Ann Arbor, MI, USA
| | - Tonela Qyli
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Dilrukshika S W Palagama
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Samantha Eckley
- Unit for Laboratory Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Tanner H Robison
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
- Department of Biomedical Engineering, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Avinash Bevoor
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Benjamin Chiang
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Henry R Haley
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Saswat Sahoo
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
| | - Phillip C Spinosa
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Dylan B Neale
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, USA
- Biointerfaces Institute, University of Michigan, Ann Arbor, MI, USA
| | - Jagadish Boppisetti
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Debashis Sahoo
- Department of Pediatrics, Department of Computer Science and Engineering, Jacob's School of Engineering, Rebecca and John Moore Comprehensive Cancer Center, University of California San Diego, La Jolla, CA, USA
| | - Pradipta Ghosh
- Department of Medicine, Department of Cellular and Molecular Medicine, Rebecca and John Moore Comprehensive Cancer Center, Veterans Affairs Medical Center, University of California San Diego, La Jolla, CA, USA
| | - Joerg Lahann
- Biointerfaces Institute, Departments of Chemical Engineering, Materials Science and Engineering, Biomedical Engineering, and Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Brian D Ross
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
- Comprehensive Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - Eusik Yoon
- Department of Biomedical Engineering, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
| | - Kathryn E Luker
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA
| | - Gary D Luker
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA.
- Department of Biomedical Engineering, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA.
- Department of Microbiology and Immunology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109, USA.
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14
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Humphries BA, Wang Z, Yang C. MicroRNA Regulation of the Small Rho GTPase Regulators-Complexities and Opportunities in Targeting Cancer Metastasis. Cancers (Basel) 2020; 12:E1092. [PMID: 32353968 PMCID: PMC7281527 DOI: 10.3390/cancers12051092] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/24/2020] [Accepted: 04/25/2020] [Indexed: 02/07/2023] Open
Abstract
The small Rho GTPases regulate important cellular processes that affect cancer metastasis, such as cell survival and proliferation, actin dynamics, adhesion, migration, invasion and transcriptional activation. The Rho GTPases function as molecular switches cycling between an active GTP-bound and inactive guanosine diphosphate (GDP)-bound conformation. It is known that Rho GTPase activities are mainly regulated by guanine nucleotide exchange factors (RhoGEFs), GTPase-activating proteins (RhoGAPs), GDP dissociation inhibitors (RhoGDIs) and guanine nucleotide exchange modifiers (GEMs). These Rho GTPase regulators are often dysregulated in cancer; however, the underlying mechanisms are not well understood. MicroRNAs (miRNAs), a large family of small non-coding RNAs that negatively regulate protein-coding gene expression, have been shown to play important roles in cancer metastasis. Recent studies showed that miRNAs are capable of directly targeting RhoGAPs, RhoGEFs, and RhoGDIs, and regulate the activities of Rho GTPases. This not only provides new evidence for the critical role of miRNA dysregulation in cancer metastasis, it also reveals novel mechanisms for Rho GTPase regulation. This review summarizes recent exciting findings showing that miRNAs play important roles in regulating Rho GTPase regulators (RhoGEFs, RhoGAPs, RhoGDIs), thus affecting Rho GTPase activities and cancer metastasis. The potential opportunities and challenges for targeting miRNAs and Rho GTPase regulators in treating cancer metastasis are also discussed. A comprehensive list of the currently validated miRNA-targeting of small Rho GTPase regulators is presented as a reference resource.
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Affiliation(s)
- Brock A. Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI 48109, USA
| | - Zhishan Wang
- Department of Toxicology and Cancer Biology, College of Medicine, University of Kentucky, 1095 V A Drive, Lexington, KY 40536, USA;
| | - Chengfeng Yang
- Department of Toxicology and Cancer Biology, College of Medicine, University of Kentucky, 1095 V A Drive, Lexington, KY 40536, USA;
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15
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Spinosa PC, Humphries BA, Lewin Mejia D, Buschhaus JM, Linderman JJ, Luker GD, Luker KE. Short-term cellular memory tunes the signaling responses of the chemokine receptor CXCR4. Sci Signal 2019; 12:eaaw4204. [PMID: 31289212 PMCID: PMC7059217 DOI: 10.1126/scisignal.aaw4204] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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] [Indexed: 12/16/2022]
Abstract
The chemokine receptor CXCR4 regulates fundamental processes in development, normal physiology, and diseases, including cancer. Small subpopulations of CXCR4-positive cells drive the local invasion and dissemination of malignant cells during metastasis, emphasizing the need to understand the mechanisms controlling responses at the single-cell level to receptor activation by the chemokine ligand CXCL12. Using single-cell imaging, we discovered that short-term cellular memory of changes in environmental conditions tuned CXCR4 signaling to Akt and ERK, two kinases activated by this receptor. Conditioning cells with growth stimuli before CXCL12 exposure increased the number of cells that initiated CXCR4 signaling and the amplitude of Akt and ERK activation. Data-driven, single-cell computational modeling revealed that growth factor conditioning modulated CXCR4-dependent activation of Akt and ERK by decreasing extrinsic noise (preexisting cell-to-cell differences in kinase activity) in PI3K and mTORC1. Modeling established mTORC1 as critical for tuning single-cell responses to CXCL12-CXCR4 signaling. Our single-cell model predicted how combinations of extrinsic noise in PI3K, Ras, and mTORC1 superimposed on different driver mutations in the ERK and/or Akt pathways to bias CXCR4 signaling. Computational experiments correctly predicted that selected kinase inhibitors used for cancer therapy shifted subsets of cells to states that were more permissive to CXCR4 activation, suggesting that such drugs may inadvertently potentiate pro-metastatic CXCR4 signaling. Our work establishes how changing environmental inputs modulate CXCR4 signaling in single cells and provides a framework to optimize the development and use of drugs targeting this signaling pathway.
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Affiliation(s)
- Phillip C Spinosa
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Brock A Humphries
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Daniela Lewin Mejia
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Johanna M Buschhaus
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Jennifer J Linderman
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Gary D Luker
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, USA
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Kathryn E Luker
- Department of Radiology Center for Molecular Imaging, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
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16
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Humphries BA, Buschhaus JM, Chen YC, Haley HR, Qyli T, Chiang B, Shen N, Rajendran S, Cutter A, Cheng YH, Chen YT, Cong J, Spinosa PC, Yoon E, Luker KE, Luker GD. Plasminogen Activator Inhibitor 1 (PAI1) Promotes Actin Cytoskeleton Reorganization and Glycolytic Metabolism in Triple-Negative Breast Cancer. Mol Cancer Res 2019; 17:1142-1154. [PMID: 30718260 DOI: 10.1158/1541-7786.mcr-18-0836] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/22/2018] [Accepted: 01/29/2019] [Indexed: 11/16/2022]
Abstract
Migration and invasion of cancer cells constitute fundamental processes in tumor progression and metastasis. Migratory cancer cells commonly upregulate expression of plasminogen activator inhibitor 1 (PAI1), and PAI1 correlates with poor prognosis in breast cancer. However, mechanisms by which PAI1 promotes migration of cancer cells remain incompletely defined. Here we show that increased PAI1 drives rearrangement of the actin cytoskeleton, mitochondrial fragmentation, and glycolytic metabolism in triple-negative breast cancer (TNBC) cells. In two-dimensional environments, both stable expression of PAI1 and treatment with recombinant PAI1 increased migration, which could be blocked with the specific inhibitor tiplaxtinin. PAI1 also promoted invasion into the extracellular matrix from coculture spheroids with human mammary fibroblasts in fibrin gels. Elevated cellular PAI1 enhanced cytoskeletal features associated with migration, actin-rich migratory structures, and reduced actin stress fibers. In orthotopic tumor xenografts, we discovered that TNBC cells with elevated PAI1 show collagen fibers aligned perpendicular to the tumor margin, an established marker of invasive breast tumors. Further studies revealed that PAI1 activates ERK signaling, a central regulator of motility, and promotes mitochondrial fragmentation. Consistent with known effects of mitochondrial fragmentation on metabolism, fluorescence lifetime imaging microscopy of endogenous NADH showed that PAI1 promotes glycolysis in cell-based assays, orthotopic tumor xenografts, and lung metastases. Together, these data demonstrate for the first time that PAI1 regulates cancer cell metabolism and suggest targeting metabolism to block motility and tumor progression. IMPLICATIONS: We identified a novel mechanism through which cancer cells alter their metabolism to promote tumor progression.
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Affiliation(s)
- Brock A Humphries
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Johanna M Buschhaus
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Yu-Chih Chen
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan.,Comprehensive Cancer Center, University of Michigan, Ann Arbor, Michigan.,Forbes Institute for Cancer Discovery, University of Michigan, Ann Arbor, Michigan
| | - Henry R Haley
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Tonela Qyli
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Benjamin Chiang
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Nathan Shen
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Shrila Rajendran
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Alyssa Cutter
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Yu-Heng Cheng
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan
| | - Yu-Ting Chen
- Computer Science Department UCLA, Boelter Hall, Los Angeles, California
| | - Jason Cong
- Computer Science Department UCLA, Boelter Hall, Los Angeles, California
| | - Phillip C Spinosa
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Euisik Yoon
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan
| | - Kathryn E Luker
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan
| | - Gary D Luker
- Center for Molecular Imaging, Department of Radiology, University of Michigan, Ann Arbor, Michigan. .,Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.,Department of Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan
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Shepardson SP, Humphries BA, Pelkki KL, Stanton DJ. Spermatozoon ultrastructure of hangingflies, Bittacus strigosus and Bittacus stigmaterus. J Insect Sci 2014; 14:10. [PMID: 25373157 PMCID: PMC4204384 DOI: 10.1093/jis/14.1.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 12/31/2013] [Indexed: 06/04/2023]
Abstract
In the present study, spermatozoon ultrastructure was documented in two species of hangingflies, Bittacus strigosus Hagen (Mecoptera: Bittacidae) and B. stigmaterus Say. Structures considered important to phylogenetic assessment that were observed in B. strigosus and B. stigmaterus included a short bilayered acrosome, elongated nucleus, tube-like glycocalyx, centriole adjunct material, accessory bodies, two mitochondrial derivatives, extra axonemal rods, globular units, and 9+2 arrangement of microtubules in the axoneme. Comparisons were made to Bittacus planus Cheng, which was previously examined by electron microscopy (Xie and Hua 2010). Similarities among the ultrastructural characteristics of the three Bittacus species support the monophyly of this genus. Displacement of a mitochondrial derivative by an accessory body was documented for the first time. This paper includes clarifications on differences between accessory bodies and extra axonemal rods, which are issues important to phylogenetic placement.
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Affiliation(s)
- Sally P Shepardson
- Biology Department, Saginaw Valley State University, University Center, MI 48710
| | - Brock A Humphries
- Biology Department, Saginaw Valley State University, University Center, MI 48710
| | - Kathleen L Pelkki
- Biology Department, Saginaw Valley State University, University Center, MI 48710
| | - David J Stanton
- Biology Department, Saginaw Valley State University, University Center, MI 48710
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Costigan SE, Warnasooriya SN, Humphries BA, Montgomery BL. Root-localized phytochrome chromophore synthesis is required for photoregulation of root elongation and impacts root sensitivity to jasmonic acid in Arabidopsis. Plant Physiol 2011; 157:1138-50. [PMID: 21875894 PMCID: PMC3252167 DOI: 10.1104/pp.111.184689] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Accepted: 08/25/2011] [Indexed: 05/18/2023]
Abstract
Plants exhibit organ- and tissue-specific light responses. To explore the molecular basis of spatial-specific phytochrome-regulated responses, a transgenic approach for regulating the synthesis and accumulation of the phytochrome chromophore phytochromobilin (PΦB) was employed. In prior experiments, transgenic expression of the BILIVERDIN REDUCTASE (BVR) gene was used to metabolically inactivate biliverdin IXα, a key precursor in the biosynthesis of PΦB, and thereby render cells accumulating BVR phytochrome deficient. Here, we report analyses of transgenic Arabidopsis (Arabidopsis thaliana) lines with distinct patterns of BVR accumulation dependent upon constitutive or tissue-specific, promoter-driven BVR expression that have resulted in insights on a correlation between root-localized BVR accumulation and photoregulation of root elongation. Plants with BVR accumulation in roots and a PΦB-deficient elongated hypocotyl2 (hy2-1) mutant exhibit roots that are longer than those of wild-type plants under white illumination. Additional analyses of a line with root-specific BVR accumulation generated using a GAL4-dependent bipartite enhancer-trap system confirmed that PΦB or phytochromes localized in roots directly impact light-dependent root elongation under white, blue, and red illumination. Additionally, roots of plants with constitutive plastid-localized or root-specific cytosolic BVR accumulation, as well as phytochrome chromophore-deficient hy1-1 and hy2-1 mutants, exhibit reduced sensitivity to the plant hormone jasmonic acid (JA) in JA-dependent root inhibition assays, similar to the response observed for the JA-insensitive mutants jar1 and myc2. Our analyses of lines with root-localized phytochrome deficiency or root-specific phytochrome depletion have provided novel insights into the roles of root-specific PΦB, or phytochromes themselves, in the photoregulation of root development and root sensitivity to JA.
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Humphries BA, Melnychuk M, Donegan EJ, Snee RD. Automated enzymatic assay for plasma ammonia. Clin Chem 1979; 25:26-30. [PMID: 32974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An enzymatic method for determining plasma ammonia with the Du Pont Automatic Clinical Analyzer (aca) is described. The assay requires a sample volume of 500 muL for a kinetic ammonia measurement. The reaction is initiated with glutamate dehydrogenase and the rate of depletion of NADPH is monitored with two measurements, 17 s apart, at 340 nm. Reaction conditions have been optimized for maximum sensitivity through both one-factor-at-a-time and multiple variable response surface optimization techniques. Linearity to 1000 mumol of ammonia per liter of plasma has been achieved. No significant interferences were observed from anticoagulants or endogenous blood components, including pyruvate and oxalacetate. Use of the coenzyme NADPH (instead of NADH) in this aca procedure eliminates the lengthy pre-incubation otherwise required for endogenous dehydrogenase reactions.
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Abstract
Abstract
An enzymatic method for determining plasma ammonia with the Du Pont Automatic Clinical Analyzer (aca) is described. The assay requires a sample volume of 500 muL for a kinetic ammonia measurement. The reaction is initiated with glutamate dehydrogenase and the rate of depletion of NADPH is monitored with two measurements, 17 s apart, at 340 nm. Reaction conditions have been optimized for maximum sensitivity through both one-factor-at-a-time and multiple variable response surface optimization techniques. Linearity to 1000 mumol of ammonia per liter of plasma has been achieved. No significant interferences were observed from anticoagulants or endogenous blood components, including pyruvate and oxalacetate. Use of the coenzyme NADPH (instead of NADH) in this aca procedure eliminates the lengthy pre-incubation otherwise required for endogenous dehydrogenase reactions.
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Humphries BA, Harrison JH. 4,4'-Bis-dimethylaminodiphenylcarbinol modification of active center sulfhydryl residues in malate dehydrogenase. J Biol Chem 1974; 249:3574-8. [PMID: 4831231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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Rohrbach MS, Humphries BA, Yost FJ, Rhodes WG, Boatman S, Hiskey RG, Harrison JH. The reaction of 4,4'-bis-dimethylaminodiphenylcarbinol with the sulfhydryl group. A new reagent for sulfhydryl analysis. Anal Biochem 1973; 52:127-42. [PMID: 4696683 DOI: 10.1016/0003-2697(73)90338-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Humphries BA, Rohrbach MS, Harrison JH. 4,4'-Bis dimethylaminodiphenylcarbinol: a new reagent for selective chemical modification. Interaction with porcine malate dehydrogenase. Biochem Biophys Res Commun 1973; 50:493-9. [PMID: 4347522 DOI: 10.1016/0006-291x(73)90867-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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