1
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Miller SG, Hoh M, Ebmeier CC, Tay JW, Ahn NG. Cooperative polarization of MCAM/CD146 and ERM family proteins in melanoma. Mol Biol Cell 2024; 35:ar31. [PMID: 38117590 PMCID: PMC10916866 DOI: 10.1091/mbc.e23-06-0255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 11/22/2023] [Accepted: 12/15/2023] [Indexed: 12/22/2023] Open
Abstract
The WRAMP structure is a protein network associated with tail-end actomyosin contractility, membrane retraction, and directional persistence during cell migration. A marker of WRAMP structures is melanoma cell adhesion molecule (MCAM) which dynamically polarizes to the cell rear. However, factors that mediate MCAM polarization are still unknown. In this study, BioID using MCAM as bait identifies the ERM family proteins, moesin, ezrin, and radixin, as WRAMP structure components. We also present a novel image analysis pipeline, Protein Polarity by Percentile ("3P"), which classifies protein polarization using machine learning and facilitates quantitative analysis. Using 3P, we find that depletion of moesin, and to a lesser extent ezrin, decreases the proportion of cells with polarized MCAM. Furthermore, although copolarized MCAM and ERM proteins show high spatial overlap, 3P identifies subpopulations with ERM proteins closer to the cell periphery. Live-cell imaging confirms that MCAM and ERM protein polarization is tightly coordinated, but ERM proteins enrich at the cell edge first. Finally, deletion of a juxtamembrane segment in MCAM previously shown to promote ERM protein interactions impedes MCAM polarization. Our findings highlight the requirement for ERM proteins in recruitment of MCAM to WRAMP structures and an advanced computational tool to characterize protein polarization.
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Affiliation(s)
- Suzannah G. Miller
- Department of Biochemistry, University of Colorado Boulder, Boulder CO 80303
| | - Maria Hoh
- Department of Biochemistry, University of Colorado Boulder, Boulder CO 80303
| | | | - Jian Wei Tay
- BioFrontiers Institute, University of Colorado Boulder, Boulder CO 80303
| | - Natalie G. Ahn
- Department of Biochemistry, University of Colorado Boulder, Boulder CO 80303
- BioFrontiers Institute, University of Colorado Boulder, Boulder CO 80303
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2
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Schaub H, Schottl A, Hoh M. Probabilistic Fusion of Depth Maps With a Reliable Estimation of the Local Reconstruction Quality. IEEE Robot Autom Lett 2022. [DOI: 10.1109/lra.2022.3208371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- H. Schaub
- Institute for Applications of Machine Learning and Intelligent Systems, University of Applied Sciences, Munich, Germany
| | - A. Schottl
- Institute for Applications of Machine Learning and Intelligent Systems, University of Applied Sciences, Munich, Germany
| | - M. Hoh
- Institute for Applications of Machine Learning and Intelligent Systems, University of Applied Sciences, Munich, Germany
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3
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Staquicini FI, Hajitou A, Driessen WHP, Proneth B, Cardó-Vila M, Staquicini DI, Markosian C, Hoh M, Cortez M, Hooda-Nehra A, Jaloudi M, Silva IT, Buttura J, Nunes DN, Dias-Neto E, Eckhardt B, Ruiz-Ramírez J, Dogra P, Wang Z, Cristini V, Trepel M, Anderson R, Sidman RL, Gelovani JG, Cristofanilli M, Hortobagyi GN, Bhujwalla ZM, Burley SK, Arap W, Pasqualini R. Targeting a cell surface vitamin D receptor on tumor-associated macrophages in triple-negative breast cancer. eLife 2021; 10:e65145. [PMID: 34060472 PMCID: PMC8169110 DOI: 10.7554/elife.65145] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 11/24/2020] [Accepted: 04/23/2021] [Indexed: 02/06/2023] Open
Abstract
Triple-negative breast cancer (TNBC) is an aggressive tumor with limited treatment options and poor prognosis. We applied the in vivo phage display technology to isolate peptides homing to the immunosuppressive cellular microenvironment of TNBC as a strategy for non-malignant target discovery. We identified a cyclic peptide (CSSTRESAC) that specifically binds to a vitamin D receptor, protein disulfide-isomerase A3 (PDIA3) expressed on the cell surface of tumor-associated macrophages (TAM), and targets breast cancer in syngeneic TNBC, non-TNBC xenograft, and transgenic mouse models. Systemic administration of CSSTRESAC to TNBC-bearing mice shifted the cytokine profile toward an antitumor immune response and delayed tumor growth. Moreover, CSSTRESAC enabled ligand-directed theranostic delivery to tumors and a mathematical model confirmed our experimental findings. Finally, in silico analysis showed PDIA3-expressing TAM in TNBC patients. This work uncovers a functional interplay between a cell surface vitamin D receptor in TAM and antitumor immune response that could be therapeutically exploited.
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Affiliation(s)
- Fernanda I Staquicini
- Rutgers Cancer Institute of New JerseyNewarkUnited States
- Division of Cancer Biology, Department of Radiation Oncology, Rutgers New Jersey Medical SchoolNewarkUnited States
| | - Amin Hajitou
- Phage Therapy Group, Department of Brain Sciences, Imperial College LondonLondonUnited Kingdom
| | | | - Bettina Proneth
- Institute of Metabolism and Cell Death, Helmholtz Zentrum MuenchenNeuherbergGermany
| | - Marina Cardó-Vila
- Department of Cellular and Molecular Medicine, The University of Arizona Cancer Center, University of ArizonaTucsonUnited States
- Department of Otolaryngology-Head and Neck Surgery, The University of Arizona Cancer Center, University of ArizonaTucsonUnited States
| | - Daniela I Staquicini
- Rutgers Cancer Institute of New JerseyNewarkUnited States
- Division of Cancer Biology, Department of Radiation Oncology, Rutgers New Jersey Medical SchoolNewarkUnited States
| | - Christopher Markosian
- Rutgers Cancer Institute of New JerseyNewarkUnited States
- Division of Cancer Biology, Department of Radiation Oncology, Rutgers New Jersey Medical SchoolNewarkUnited States
| | - Maria Hoh
- Division of Cancer Imaging Research, The Russell H Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of MedicineBaltimoreUnited States
| | - Mauro Cortez
- Department of Parasitology, Institute of Biomedical Sciences, University of São PauloSão PauloBrazil
| | - Anupama Hooda-Nehra
- Rutgers Cancer Institute of New JerseyNewarkUnited States
- Division of Hematology/Oncology, Department of Medicine, Rutgers New Jersey Medical SchoolNewarkUnited States
| | - Mohammed Jaloudi
- Rutgers Cancer Institute of New JerseyNewarkUnited States
- Division of Hematology/Oncology, Department of Medicine, Rutgers New Jersey Medical SchoolNewarkUnited States
| | - Israel T Silva
- Laboratory of Computational Biology, A.C. Camargo Cancer CenterSão PauloBrazil
| | - Jaqueline Buttura
- Laboratory of Computational Biology, A.C. Camargo Cancer CenterSão PauloBrazil
| | - Diana N Nunes
- Laboratory of Medical Genomics, A.C. Camargo Cancer CenterSão PauloBrazil
| | - Emmanuel Dias-Neto
- Laboratory of Computational Biology, A.C. Camargo Cancer CenterSão PauloBrazil
- Laboratory of Medical Genomics, A.C. Camargo Cancer CenterSão PauloBrazil
| | - Bedrich Eckhardt
- Translational Breast Cancer Program, Olivia Newton-John Cancer Research InstituteMelbourneAustralia
| | - Javier Ruiz-Ramírez
- Mathematics in Medicine Program, The Houston Methodist Research InstituteHoustonUnited States
| | - Prashant Dogra
- Mathematics in Medicine Program, The Houston Methodist Research InstituteHoustonUnited States
| | - Zhihui Wang
- Mathematics in Medicine Program, The Houston Methodist Research InstituteHoustonUnited States
| | - Vittorio Cristini
- Mathematics in Medicine Program, The Houston Methodist Research InstituteHoustonUnited States
| | - Martin Trepel
- Department of Oncology and Hematology, University Medical Center Hamburg-EppendorfHamburgGermany
- Department of Oncology and Hematology, University Medical Center AugsburgAugsburgGermany
| | - Robin Anderson
- Translational Breast Cancer Program, Olivia Newton-John Cancer Research InstituteMelbourneAustralia
| | - Richard L Sidman
- Department of Neurology, Harvard Medical SchoolBostonUnited States
| | - Juri G Gelovani
- Department of Biomedical Engineering, College of Engineering, Wayne State UniversityDetroitUnited States
- Department of Oncology, School of Medicine, Wayne State UniversityDetroitUnited States
- Department of Neurosurgery, School of Medicine, Wayne State UniversityDetroitUnited States
| | - Massimo Cristofanilli
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University ChicagoChicagoUnited States
| | - Gabriel N Hortobagyi
- Department of Breast Medical Oncology, The University of Texas M.D. Anderson Cancer CenterHoustonUnited States
| | - Zaver M Bhujwalla
- Division of Cancer Imaging Research, The Russell H Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of MedicineBaltimoreUnited States
| | - Stephen K Burley
- Rutgers Cancer Institute of New JerseyNew BrunswickUnited States
- Research Collaboratory for Structural Bioinformatics Protein Data Bank, San Diego Supercomputer Center, University of California-San DiegoLa JollaUnited States
- Research Collaboratory for Structural Bioinformatics Protein Data Bank, Institute for Quantitative Biomedicine, Rutgers, The State University of New JerseyPiscatawayUnited States
| | - Wadih Arap
- Rutgers Cancer Institute of New JerseyNewarkUnited States
- Division of Hematology/Oncology, Department of Medicine, Rutgers New Jersey Medical SchoolNewarkUnited States
| | - Renata Pasqualini
- Rutgers Cancer Institute of New JerseyNewarkUnited States
- Division of Cancer Biology, Department of Radiation Oncology, Rutgers New Jersey Medical SchoolNewarkUnited States
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4
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Galbraith MD, Andrysik Z, Pandey A, Hoh M, Bonner EA, Hill AA, Sullivan KD, Espinosa JM. CDK8 Kinase Activity Promotes Glycolysis. Cell Rep 2018; 21:1495-1506. [PMID: 29117556 DOI: 10.1016/j.celrep.2017.10.058] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [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: 07/31/2017] [Revised: 09/21/2017] [Accepted: 10/13/2017] [Indexed: 12/27/2022] Open
Abstract
Aerobic glycolysis, also known as the Warburg effect, is a hallmark of cancerous tissues. Despite its importance in cancer development, our understanding of mechanisms driving this form of metabolic reprogramming is incomplete. We report here an analysis of colorectal cancer cells engineered to carry a single point mutation in the active site of the Mediator-associated kinase CDK8, creating hypomorphic alleles sensitive to bulky ATP analogs. Transcriptome analysis revealed that CDK8 kinase activity is required for the expression of many components of the glycolytic cascade. CDK8 inhibition impairs glucose transporter expression, glucose uptake, glycolytic capacity and reserve, as well as cell proliferation and anchorage-independent growth, both in normoxia and hypoxia. Importantly, CDK8 impairment sensitizes cells to pharmacological glycolysis inhibition, a result reproduced with Senexin A, a dual inhibitor of CDK8/CDK19. Altogether, these results contribute to our understanding of CDK8 as an oncogene, and they justify investigations to target CDK8 in highly glycolytic tumors.
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Affiliation(s)
- Matthew D Galbraith
- Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
| | - Zdenek Andrysik
- Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Ahwan Pandey
- Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Maria Hoh
- Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Elizabeth A Bonner
- Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Amanda A Hill
- Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kelly D Sullivan
- Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Joaquín M Espinosa
- Linda Crnic Institute for Down Syndrome, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Pharmacology, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, Boulder, CO 80309, USA.
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5
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Fitzwalter BE, Towers CG, Sullivan KD, Andrysik Z, Hoh M, Ludwig M, O'Prey J, Ryan KM, Espinosa JM, Morgan MJ, Thorburn A. Autophagy Inhibition Mediates Apoptosis Sensitization in Cancer Therapy by Relieving FOXO3a Turnover. Dev Cell 2018; 44:555-565.e3. [PMID: 29533771 PMCID: PMC5866042 DOI: 10.1016/j.devcel.2018.02.014] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [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: 05/10/2017] [Revised: 01/03/2018] [Accepted: 02/13/2018] [Indexed: 12/14/2022]
Abstract
Macroautophagy (autophagy) is intimately linked with cell death and allows cells to evade apoptosis. This has prompted clinical trials to combine autophagy inhibitors with other drugs with the aim of increasing the likelihood of cancer cells dying. However, the molecular basis for such effects is unknown. Here, we describe a transcriptional mechanism that connects autophagy to apoptosis. The autophagy-regulating transcription factor, FOXO3a, is itself turned over by basal autophagy creating a potential feedback loop. Increased FOXO3a upon autophagy inhibition stimulates transcription of the pro-apoptotic BBC3/PUMA gene to cause apoptosis sensitization. This mechanism explains how autophagy inhibition can sensitize tumor cells to chemotherapy drugs and allows an autophagy inhibitor to change the action of an MDM2-targeted drug from growth inhibition to apoptosis, reducing tumor burden in vivo. Thus, a link between two processes mediated via a single transcription factor binding site in the genome can be leveraged to improve anti-cancer therapies.
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Affiliation(s)
- Brent E Fitzwalter
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA
| | - Christina G Towers
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA
| | - Kelly D Sullivan
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA; Linda Crnic Institute for Down Syndrome, University of Colorado, Denver, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Zdenek Andrysik
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA
| | - Maria Hoh
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA
| | - Michael Ludwig
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA
| | - Jim O'Prey
- Cancer Research UK, Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | - Kevin M Ryan
- Cancer Research UK, Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK
| | - Joaquin M Espinosa
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA; Linda Crnic Institute for Down Syndrome, University of Colorado, Denver, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Michael J Morgan
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA
| | - Andrew Thorburn
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Mail Stop 8303, 12801 East 17th Avenue, Room L18-6105, Aurora, CO 80045, USA.
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6
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Soucy PA, Hoh M, Heinz W, Hoh J, Romer L. Oriented matrix promotes directional tubulogenesis. Acta Biomater 2015; 11:264-73. [PMID: 25219769 DOI: 10.1016/j.actbio.2014.08.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [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: 04/02/2014] [Revised: 07/02/2014] [Accepted: 08/28/2014] [Indexed: 12/22/2022]
Abstract
Detailed control over the structural organization of scaffolds and engineered tissue constructs is a critical need in the quest to engineer functional tissues using biomaterials. This work presents a new approach to spatially direct endothelial tubulogenesis. Micropatterned fibronectin substrates were used to control lung fibroblast adhesion and growth and the subsequent deposition of fibroblast-derived matrix during culture. The fibroblast-derived matrix produced on the micropatterned substrates was tightly oriented by these patterns, with an average variation of only 8.5°. Further, regions of this oriented extracellular matrix provided directional control of developing endothelial tubes to within 10° of the original micropatterned substrate design. Endothelial cells seeded directly onto the micropatterned substrate did not form tubes. A metric for matrix anisotropy showed a relationship between the fibroblast-derived matrix and the endothelial tubes that were subsequently developed on the same micropatterns with a resulting aspect ratio over 1.5 for endothelial tubulogenesis. Micropatterns in "L" and "Y" shapes were used to direct endothelial tubes to turn and branch with the same level of precision. These data demonstrate that anisotropic fibroblast-derived matrices instruct the alignment and shape of endothelial tube networks, thereby introducing an approach that could be adapted for future design of microvascular implants featuring organ-specific natural matrix that patterns microvascular growth.
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Affiliation(s)
- Patricia A Soucy
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Bioengineering, University of Louisville, Louisville, KY 40292, USA
| | - Maria Hoh
- Intelligent Substrates, Inc., Sykesville, MD, USA
| | - Will Heinz
- Intelligent Substrates, Inc., Sykesville, MD, USA; Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jan Hoh
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Lewis Romer
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Anesthesiology and Critical Care Medicine, Cell Biology, and Pediatrics, and the Center for Cell Dynamics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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7
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Abstract
Protein micropatterned substrates have emerged as important tools for studying how cells interact with their environment, as well as allowing useful experimental control over, for example, cell shape and cell position on a surface. Here we present a new approach for protein micropatterning in which a focused laser is used to locally inactivate proteins on a protein-coated substrate. By translating the laser relative to the substrate, protein patterns of essentially arbitrary shape can be produced. This approach has a number of useful features. To begin, it is a maskless writing approach. Thus new patterns can be designed and implemented quickly. Laser inactivation can also be performed on a number of different substrate materials, ranging from glass to polydimethylsiloxane. Further, the inactivation is dose dependent, thus complex gradients and other non-uniform distributions of proteins can be produced. Because the focus of the laser can be changed quickly, laser-based patterning can also be applied to substrates with complex topographies or enclosed surfaces--as long as an optical path is available. To demonstrate this capability, protein patterns were made on the inside of small quartz capillary tubes. Patterned substrates produced using laser inactivation constrain cell shape in predictable ways, and we show that these substrates are compatible with a number of different eukaryotic cell lines.
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Affiliation(s)
- William F Heinz
- Department of Physiology, Johns Hopkins School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA
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8
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Hoh M, Werbin JL, Dumas JK, Heinz WF, Hoh JH. Nanometer-scale embossing of polydimethylsiloxane. Langmuir 2010; 26:2187-2190. [PMID: 20067244 DOI: 10.1021/la9029886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Microstructured polydimethylsiloxane (PDMS) is an important and widely used material in biology and chemistry. Here we report that micrometer- and nanometer-scale features can be introduced into the surface of PDMS in a process that is functionally equivalent to embossing. We show that surface features <50 nm can be replicated onto the surface of previously cured PDMS at room temperature and at low pressure. This type of embossing can be performed on samples in solution. It also allows one template to be used for many different types of microstructures by changing the embossing time or serial embossing at different alignments. The balance between elastic and plastic properties of the PDMS has the effect of high-pass filtering the features that are captured and produces a sample that is suitable for sensitive surface characterization technologies such as atomic force microscopy. These findings extend the applications of PDMS as well as open the possibility for new uses.
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Affiliation(s)
- Maria Hoh
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
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9
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Ratner L, Griffith RC, Marselle L, Hoh M, Wong-Staal F, Saxinger C. A lymphoproliferative disorder caused by human T-lymphotropic virus type I. Demonstration of a continuum between acute and chronic adult T-cell leukemia/lymphoma. Am J Med 1987; 83:953-8. [PMID: 2890302 DOI: 10.1016/0002-9343(87)90658-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A 35-year-old black man is described who had a human T-lymphotropic virus type I (HTLV-I) infection while living in a non-endemic region. A lymphoproliferative disorder developed that might be considered as a transition stage between acute and chronic adult T-cell leukemia/lymphoma. This suggests that HTLV-I-induced neoplasias represent a continuous disease spectrum.
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Affiliation(s)
- L Ratner
- Department of Medicine, Washington University, St. Louis, Missouri 63110
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10
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Saxinger WC, Wantzin GL, Thomsen K, Hoh M, Gallo RC. Occurrence of HTLV-I antibodies in Danish patients with cutaneous T-cell lymphoma. Scand J Haematol 1985; 34:455-62. [PMID: 2990023 DOI: 10.1111/j.1600-0609.1985.tb00777.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
10 of 68 CTCL (cutaneous T-cell lymphoma) patients without features of ATLL had antibodies against HTLV-I (human T-cell leukaemia virus, type I). The titre of antibody in these positive patients was generally much lower than that seen in cases of ATLL (adult T-cell leukaemia/lymphoma); geometric mean of 80 for CTCL vs. 8000 for Caribbean ATLL. The presence of HTLV-I antibody was unrelated to clinical remission, relapse, or stages of the disease, and some positives were detected in the earliest phases of mycosis fungoides. Among controls and normal donors between the ages of 40 and 65, only 1 of 36 and 3 of 113, respectively, had low titre antibodies to HTLV-I in their sera. Only 5 of 354 Danish normal donors of all ages had antibody, which was identical to the rate in over 2000 US normal donors. In negative control experiments, these antibodies were unreactive with bovine leukaemia virus. These data suggest that HTLV-I or a related retrovirus crossreactive with HTLV-I occurs in a low percentage of the Danish population and patients with CTCL have such antibodies at an increased rate, but less than the rate seen for ATLL (greater than 90%).
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11
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Saxinger WC, Levine PH, Dean AG, de Thé G, Lange-Wantzin G, Moghissi J, Laurent F, Hoh M, Sarngadharan MG, Gallo RC. Evidence for exposure to HTLV-III in Uganda before 1973. Science 1985; 227:1036-8. [PMID: 2983417 DOI: 10.1126/science.2983417] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Fifty of 75 serum samples collected in the West Nile district of Uganda between August 1972 and July 1973 contained antibodies reactive with human T-cell leukemia (lymphotropic) virus type 3 (HTLV-III; mean titer, 601), while 12 of 75 samples were positive in a similar test for HTLV type 1 (HTLV-1) antibodies (mean titer, 236). The samples were screened by enzyme-linked immunosorbent assay and positive results were confirmed by a newly developed unlabeled antibody-peroxidase procedure with enhanced sensitivity for detection of antibody binding to immunoblots of HTLV-III antigen, demonstrating antibodies to proteins with molecular weights of 24,000, 41,000, and 76,000 in nearly all positive samples. Analysis of titration data indicated enhanced titers of antibody against HTLV-III and HTLV-I when coinfection occurred. The high prevalence and relatively low titers [compared to serum from patients with acquired immune deficiency syndrome (AIDS)] of antibodies recognizing HTLV-III proteins in sera from this population at a time that may predate or coincide with the appearance or spread of the AIDS agent (HTLV-III) suggest that the virus detected may have been a predecessor of HTLV-III or is HTLV-III itself but existing in a population acclimated to its presence. It further suggests an African origin of HTLV-III.
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12
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Saxinger W, Blattner WA, Levine PH, Clark J, Biggar R, Hoh M, Moghissi J, Jacobs P, Wilson L, Jacobson R. Human T-cell leukemia virus (HTLV-I) antibodies in Africa. Science 1984; 225:1473-6. [PMID: 6089348 DOI: 10.1126/science.6089348] [Citation(s) in RCA: 174] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Antibodies specific for human T-cell leukemia-lymphoma virus type I (HTLV-I) were demonstrated in serum samples from various groups of people in South Africa, Uganda, Ghana, Nigeria, Tunisia, and Egypt. The samples had been collected for other purposes and were presumably selected without bias toward clinical conditions associated with HTLV infections. Regional differences in antibody positivity were observed, indicating widely distributed loci of occurrence of HTLV on the African continent in people of both black and white ancestry. Two patients with high titers of antibody to HTLV-I had some signs of adult T-cell leukemia-lymphoma. In several groups a high frequency of false positive serum reactions was indicated when specific confirmation steps were included in the assay. Further characterization of these sera revealed highly elevated immunoglobulin levels, possibly due to polyclonal activation of immunoglobulin synthesis in these subjects. The possibility that related cross-reactive human retroviruses coexist in the same groups was not eliminated.
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