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Ziak J, Dorskind JM, Trigg B, Sudarsanam S, Jin XO, Hand RA, Kolodkin AL. Microtubule-binding protein MAP1B regulates interstitial axon branching of cortical neurons via the tubulin tyrosination cycle. EMBO J 2024; 43:1214-1243. [PMID: 38388748 PMCID: PMC10987652 DOI: 10.1038/s44318-024-00050-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 02/24/2024] Open
Abstract
Regulation of directed axon guidance and branching during development is essential for the generation of neuronal networks. However, the molecular mechanisms that underlie interstitial (or collateral) axon branching in the mammalian brain remain unresolved. Here, we investigate interstitial axon branching in vivo using an approach for precise labeling of layer 2/3 callosal projection neurons (CPNs). This method allows for quantitative analysis of axonal morphology at high acuity and also manipulation of gene expression in well-defined temporal windows. We find that the GSK3β serine/threonine kinase promotes interstitial axon branching in layer 2/3 CPNs by releasing MAP1B-mediated inhibition of axon branching. Further, we find that the tubulin tyrosination cycle is a key downstream component of GSK3β/MAP1B signaling. These data suggest a cell-autonomous molecular regulation of cortical neuron axon morphology, in which GSK3β can release a MAP1B-mediated brake on interstitial axon branching upstream of the posttranslational tubulin code.
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Affiliation(s)
- Jakub Ziak
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins Kavli Neuroscience Discovery Institute, The Johns Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD, 21205, USA
| | - Joelle M Dorskind
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins Kavli Neuroscience Discovery Institute, The Johns Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD, 21205, USA
- Novartis Institutes for BioMedical Research, Boston, MA, USA
| | - Brian Trigg
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins Kavli Neuroscience Discovery Institute, The Johns Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD, 21205, USA
| | - Sriram Sudarsanam
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins Kavli Neuroscience Discovery Institute, The Johns Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD, 21205, USA
| | - Xinyu O Jin
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins Kavli Neuroscience Discovery Institute, The Johns Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD, 21205, USA
| | - Randal A Hand
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins Kavli Neuroscience Discovery Institute, The Johns Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD, 21205, USA
- Prilenia Therapeutics, Boston, MA, USA
| | - Alex L Kolodkin
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins Kavli Neuroscience Discovery Institute, The Johns Hopkins School of Medicine, 725 North Wolfe St., Baltimore, MD, 21205, USA.
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2
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Massey A, Stewart J, Smith C, Parvini C, McCormick M, Do K, Cartagena-Rivera AX. Mechanical properties of human tumour tissues and their implications for cancer development. NATURE REVIEWS. PHYSICS 2024; 6:269-282. [PMID: 38706694 PMCID: PMC11066734 DOI: 10.1038/s42254-024-00707-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/13/2024] [Indexed: 05/07/2024]
Abstract
The mechanical properties of cells and tissues help determine their architecture, composition and function. Alterations to these properties are associated with many diseases, including cancer. Tensional, compressive, adhesive, elastic and viscous properties of individual cells and multicellular tissues are mostly regulated by reorganization of the actomyosin and microtubule cytoskeletons and extracellular glycocalyx, which in turn drive many pathophysiological processes, including cancer progression. This Review provides an in-depth collection of quantitative data on diverse mechanical properties of living human cancer cells and tissues. Additionally, the implications of mechanical property changes for cancer development are discussed. An increased knowledge of the mechanical properties of the tumour microenvironment, as collected using biomechanical approaches capable of multi-timescale and multiparametric analyses, will provide a better understanding of the complex mechanical determinants of cancer organization and progression. This information can lead to a further understanding of resistance mechanisms to chemotherapies and immunotherapies and the metastatic cascade.
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Affiliation(s)
- Andrew Massey
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
| | - Jamie Stewart
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
- These authors contributed equally: Jamie Stewart, Chynna Smith
| | - Chynna Smith
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
- These authors contributed equally: Jamie Stewart, Chynna Smith
| | - Cameron Parvini
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
| | - Moira McCormick
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
| | - Kun Do
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
| | - Alexander X. Cartagena-Rivera
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
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3
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Krawczyk-Wołoszyn K, Roczkowski D, Reich A. Evaluation of Surface Structure and Morphological Phenomena of Caucasian Virgin Hair with Atomic Force Microscopy. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:297. [PMID: 38399584 PMCID: PMC10890343 DOI: 10.3390/medicina60020297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/03/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024]
Abstract
Background and Objectives: Atomic force microscopy (AFM) as a type of scanning microscopy (SPM), which has a resolution of fractions of a nanometer on the atomic scale, is widely used in materials science. To date, research using AFM in medicine has focused on neurodegenerative diseases, osteoporosis, cancer tumors, cell receptors, proteins and the DNA mismatch repair (MMR) system. Only a few small studies of hair imaging have been conducted, mostly in biotechnology or cosmetology. Thanks to the possibilities offered by AFM imaging, dermatologists can non-invasively assess the condition of hair and its possible disorders. Our goal was to capture images and microscopically analyze morphological changes in the surface of healthy hair. Materials and Methods: In this study, three to five hairs were collected from each person. Each hair was examined at nine locations (0.5; 1.0; 1.5; 2.0; 3.5; 4.5; 5.5; 6.5 and 7.0 cm from the root). At least 4 images (4-10 images) were taken at each of the 9 locations. A total of 496 photos were taken and analyzed. Metric measurements of hair scales, such as apparent length, width and scale step height, were taken. Results: This publication presents the changes occurring in hair during the natural delamination process. In addition, morphoological changes visualized on the surface of healthy hair (pitting, oval indentations, rod-shaped macro-fibrillar elements, globules, scratches, wavy edge) are presented. A quantitative analysis of the structures found was carried out. Conclusions: The findings of this study can be used in further research and work related to the subject of human hair. They can serve as a reference for research on scalp and hair diseases, as well as hair care.
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Affiliation(s)
- Karolina Krawczyk-Wołoszyn
- Doctoral School, University of Rzeszow, 35-959 Rzeszów, Poland;
- Department of Dermatology, Institute of Medical Sciences, Medical College of the Rzeszow University, 35-959 Rzeszów, Poland;
| | - Damian Roczkowski
- Department of Dermatology, Institute of Medical Sciences, Medical College of the Rzeszow University, 35-959 Rzeszów, Poland;
| | - Adam Reich
- Department of Dermatology, Institute of Medical Sciences, Medical College of the Rzeszow University, 35-959 Rzeszów, Poland;
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4
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Cho DH, Aguayo S, Cartagena-Rivera AX. Atomic force microscopy-mediated mechanobiological profiling of complex human tissues. Biomaterials 2023; 303:122389. [PMID: 37988897 PMCID: PMC10842832 DOI: 10.1016/j.biomaterials.2023.122389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/23/2023]
Abstract
Tissue mechanobiology is an emerging field with the overarching goal of understanding the interplay between biophysical and biochemical responses affecting development, physiology, and disease. Changes in mechanical properties including stiffness and viscosity have been shown to describe how cells and tissues respond to mechanical cues and modify critical biological functions. To quantitatively characterize the mechanical properties of tissues at physiologically relevant conditions, atomic force microscopy (AFM) has emerged as a highly versatile biomechanical technology. In this review, we describe the fundamental principles of AFM, typical AFM modalities used for tissue mechanics, and commonly used elastic and viscoelastic contact mechanics models to characterize complex human tissues. Furthermore, we discuss the application of AFM-based mechanobiology to characterize the mechanical responses within complex human tissues to track their developmental, physiological/functional, and diseased states, including oral, hearing, and cancer-related tissues. Finally, we discuss the current outlook and challenges to further advance the field of tissue mechanobiology. Altogether, AFM-based tissue mechanobiology provides a mechanistic understanding of biological processes governing the unique functions of tissues.
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Affiliation(s)
- David H Cho
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
| | - Sebastian Aguayo
- Dentistry School, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile; Schools of Engineering, Medicine, and Biological Sciences, Institute for Biological and Medical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alexander X Cartagena-Rivera
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA.
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Muthumanickam S, Ramachandran B, Boomi P, Jeyakanthan J, Prabu HG, Jegatheswaran S, Premkumar K. Combination of bendamustine-azacitidine against Syk target of breast cancer: an in silico study. J Biomol Struct Dyn 2023; 41:13950-13962. [PMID: 37098715 DOI: 10.1080/07391102.2023.2203259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/28/2023] [Indexed: 04/27/2023]
Abstract
Breast cancer (BC) is the most serious and second leading cause of death in women worldwide. When breast cancer is diagnosed and treated early, the chance of long-term survival is up to 90%. On the other hand, 90% of BC patient deaths are due to metastasis and a lack of effective early diagnosis. The existing conventional chemotherapy provides negative feedback due to transportation barriers towards the action sites, multidrug resistance, poor bio-availability, non-specific delivery and systemic side effects on the healthy tissue. Syk protein Kinase has been reported in BC, as a tumor modulator, providing a pro-survival signal and also by restricting epithelial-mesenchymal transition, enhancing cell-cell interactions and inhibiting migration. In the present study, we explored the possibility of targeting BC by attenuating Syk protein Kinase. Hence, we have conjugated the hydrophobic Bendamustine (BEN) and hydrophilic Azacitidine (AZA) anticancer drugs to evaluate their efficacy against BC. The native drugs (BEN and AZA) and designed drug-drug conjugate (BEN-AZA) were docked with Syk protein. Then, the docked complex was performed for Binding Free Energy and Molecular Dynamics Simulations. Furthermore, DFT and ADME properties were carried out. The results revealed that the designed drug-drug conjugate has a better docking score, ΔGbind and admirable stability throughout the simulation when compared with native drugs. In DFT and ADME analyses, the designed drug-drug conjugate has shown good stereo electronic features and pharmaceutical relevant parameters than that of native drugs. The overall results suggested that the designed drug-drug conjugate may be a suitable candidate for BC treatment.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | | | - Pandi Boomi
- Department of Bioinformatics, Alagappa University, Karaikudi, Tamil Nadu, India
| | | | - Halliah Gurumallesh Prabu
- Department of Industrial Chemistry, School of Chemical Sciences, Alagappa University, Karaikudi, Tamil Nadu, India
| | | | - Kumpati Premkumar
- Department of Biomedical Science, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
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6
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McCraw MR, Uluutku B, Solomon HD, Anderson MS, Sarkar K, Solares SD. Optimizing the accuracy of viscoelastic characterization with AFM force-distance experiments in the time and frequency domains. SOFT MATTER 2023; 19:451-467. [PMID: 36530043 DOI: 10.1039/d2sm01331b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Atomic Force Microscopy (AFM) force-distance (FD) experiments have emerged as an attractive alternative to traditional micro-rheology measurement techniques owing to their versatility of use in materials of a wide range of mechanical properties. Here, we show that the range of time dependent behaviour which can reliably be resolved from the typical method of FD inversion (fitting constitutive FD relations to FD data) is inherently restricted by the experimental parameters: sampling frequency, experiment length, and strain rate. Specifically, we demonstrate that violating these restrictions can result in errors in the values of the parameters of the complex modulus. In the case of complex materials, such as cells, whose behaviour is not specifically understood a priori, the physical sensibility of these parameters cannot be assessed and may lead to falsely attributing a physical phenomenon to an artifact of the violation of these restrictions. We use arguments from information theory to understand the nature of these inconsistencies as well as devise limits on the range of mechanical parameters which can be reliably obtained from FD experiments. The results further demonstrate that the nature of these restrictions depends on the domain (time or frequency) used in the inversion process, with the time domain being far more restrictive than the frequency domain. Finally, we demonstrate how to use these restrictions to better design FD experiments to target specific timescales of a material's behaviour through our analysis of a polydimethylsiloxane (PDMS) polymer sample.
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Affiliation(s)
- Marshall R McCraw
- Department of Mechanical and Aerospace Engineering, The George Washington University School of Engineering and Applied Science, Washington, District of Columbia, USA.
| | - Berkin Uluutku
- Department of Mechanical and Aerospace Engineering, The George Washington University School of Engineering and Applied Science, Washington, District of Columbia, USA.
| | - Halen D Solomon
- Department of Mechanical and Aerospace Engineering, The George Washington University School of Engineering and Applied Science, Washington, District of Columbia, USA.
| | - Megan S Anderson
- Department of Mechanical and Aerospace Engineering, The George Washington University School of Engineering and Applied Science, Washington, District of Columbia, USA.
| | - Kausik Sarkar
- Department of Mechanical and Aerospace Engineering, The George Washington University School of Engineering and Applied Science, Washington, District of Columbia, USA.
| | - Santiago D Solares
- Department of Mechanical and Aerospace Engineering, The George Washington University School of Engineering and Applied Science, Washington, District of Columbia, USA.
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7
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Tension of plus-end tracking protein Clip170 confers directionality and aggressiveness during breast cancer migration. Cell Death Dis 2022; 13:856. [PMID: 36209218 PMCID: PMC9547975 DOI: 10.1038/s41419-022-05306-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 11/17/2022]
Abstract
The microtubule (MT) plus-end binding protein Clip170 is associated closely with breast cancer invasion and migration. In this study, Clip170 tension observed by a newly designed cpstFRET tension probe was suggested to be positive related to breast cancer aggressiveness, which could be regulated by α-tubulin detyrosination-induced MT disassembly. Clip170 phosphorylation induced by Ribosomal protein S6 kinase (RSK) could also increase its tension and promote the conversion of a discrete comet-like Clip-170 distribution into a spotty pattern during cancer metastasis. Heightened Clip170 tension was correlated with the formation of cortactin-associated filopodia and lamellipodia, and then promoted invasion and metastasis both in vitro and in vivo. Meanwhile, Clip170 tension enhanced at the leading edge in directional migration, accompanying with IQGAP1 subcellular distribution variation. Our work indicates that the malignancy and directionality during breast cancer migration depend on the magnitude and polarization of Clip170 tension, and we suggest Clip170 tension as a new potential drug target for breast cancer therapy.
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8
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Zhou Y, Wang J, Huang Z, Gong P, Xie M. Deriving prognostic significance from a molecular subtype model of laryngeal carcinoma. Head Neck 2022; 44:2206-2219. [PMID: 35809031 DOI: 10.1002/hed.27137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 04/01/2022] [Accepted: 06/16/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This study explored whether laryngeal carcinoma could be divided into different subtypes based on molecular differences using a molecular subtype-prediction model. METHODS We extracted data from the Cancer Genome Atlas and Gene Expression Omnibus databases and then performed unsupervised cluster analysis to identify discrete molecular subtypes of laryngeal carcinoma. Significance analysis of microarrays was performed to detect differentially expressed genes for each subtype, and gene set enrichment analysis and the GenCliP3 software were used to label gene functions and identify key pathways. RESULTS We categorized 126 patients into C1 and C2 molecular subtypes associated with pathologic grade. The C2 subtype appeared more aggressive, with a worse prognosis. The most significant enrichment pathway of the C2 subtype was the Hedgehog pathway, and GLI1 was a core gene. CONCLUSIONS Laryngeal carcinoma can be divided into two subtypes based on differences in molecular expression, which could identify key molecules associated with prognosis.
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Affiliation(s)
- Yibo Zhou
- Department of Otolaryngology Head and Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Department of Otolaryngology Head and Neck Surgery, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Jiahong Wang
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhongxi Huang
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Pinggui Gong
- Department of Otolaryngology Head and Neck Surgery, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Minqiang Xie
- Department of Otolaryngology Head and Neck Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Department of Otolaryngology Head and Neck Surgery, Zhuhai People's Hospital, Zhuhai, China
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9
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Viscoelastic parameterization of human skin cells characterize material behavior at multiple timescales. Commun Biol 2022; 5:17. [PMID: 35017622 PMCID: PMC8752830 DOI: 10.1038/s42003-021-02959-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 12/06/2021] [Indexed: 01/22/2023] Open
Abstract
Countless biophysical studies have sought distinct markers in the cellular mechanical response that could be linked to morphogenesis, homeostasis, and disease. Here, an iterative-fitting methodology visualizes the time-dependent viscoelastic behavior of human skin cells under physiologically relevant conditions. Past investigations often involved parameterizing elastic relationships and assuming purely Hertzian contact mechanics, which fails to properly account for the rich temporal information available. We demonstrate the performance superiority of the proposed iterative viscoelastic characterization method over standard open-search approaches. Our viscoelastic measurements revealed that 2D adherent metastatic melanoma cells exhibit reduced elasticity compared to their normal counterparts—melanocytes and fibroblasts, and are significantly less viscous than fibroblasts over timescales spanning three orders of magnitude. The measured loss angle indicates clear differential viscoelastic responses across multiple timescales between the measured cells. This method provides insight into the complex viscoelastic behavior of metastatic melanoma cells relevant to better understanding cancer metastasis and aggression. Parvini, Cartagena and Solares introduce an iterative viscoelastic approach based on the generalized Maxwell and Kelvin-Voigt models. The results showed that metastatic melanoma cells had lower elasticity than normal fibroblasts and melanoma cells were less viscous than the fibroblasts over a large frequency range, enhancing the understanding of cellular responses at different frequencies.
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10
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Alunda BO, Lee YJ. Review: Cantilever-Based Sensors for High Speed Atomic Force Microscopy. SENSORS (BASEL, SWITZERLAND) 2020; 20:E4784. [PMID: 32854193 PMCID: PMC7506678 DOI: 10.3390/s20174784] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/13/2022]
Abstract
This review critically summarizes the recent advances of the microcantilever-based force sensors for atomic force microscope (AFM) applications. They are one the most common mechanical spring-mass systems and are extremely sensitive to changes in the resonant frequency, thus finding numerous applications especially for molecular sensing. Specifically, we comment on the latest progress in research on the deflection detection systems, fabrication, coating and functionalization of the microcantilevers and their application as bio- and chemical sensors. A trend on the recent breakthroughs on the study of biological samples using high-speed atomic force microscope is also reported in this review.
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Affiliation(s)
- Bernard Ouma Alunda
- School of Mines and Engineering, Taita Taveta University, P.O. Box 635-80300 Voi, Kenya;
| | - Yong Joong Lee
- School of Mechanical Engineering, Kyungpook National University, Daegu 41566, Korea
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11
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Garcia R. Nanomechanical mapping of soft materials with the atomic force microscope: methods, theory and applications. Chem Soc Rev 2020; 49:5850-5884. [PMID: 32662499 DOI: 10.1039/d0cs00318b] [Citation(s) in RCA: 161] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Fast, high-resolution, non-destructive and quantitative characterization methods are needed to develop materials with tailored properties at the nanoscale or to understand the relationship between mechanical properties and cell physiology. This review introduces the state-of-the-art force microscope-based methods to map at high-spatial resolution the elastic and viscoelastic properties of soft materials. The experimental methods are explained in terms of the theories that enable the transformation of observables into material properties. Several applications in materials science, molecular biology and mechanobiology illustrate the scope, impact and potential of nanomechanical mapping methods.
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Affiliation(s)
- Ricardo Garcia
- Instituto de Ciencia de Materiales de Madrid, CSIC, c/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
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12
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Yuan B, Hao J, Zhang Q, Wang Y, Zhu Y. Role of Bcl-2 on drug resistance in breast cancer polyploidy-induced spindle poisons. Oncol Lett 2020; 19:1701-1710. [PMID: 32194662 PMCID: PMC7039128 DOI: 10.3892/ol.2020.11256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 10/22/2019] [Indexed: 12/13/2022] Open
Abstract
Spindle poisons are chemotherapeutic drugs used in the treatment of malignant tumors; however, numerous patients develop resistance following chemotherapy. The present study aimed to induce polyploidy in breast cancer cells using the spindle poison nocodazole to investigate the mechanism of polyploid-induced tumor resistance. It was revealed that the spindle poison nocodazole induced apoptosis in HCC1806 cells but also induced polyploidy in MDA-MB-231 cells. The drug sensitivities of the polyploid MDA-MB-231 cells to paclitaxel, docetaxel, epirubicin, 5-fluorouracil and oxaliplatin were lower than those of the original tumor cells; however, the polyploid MDA-MB-231 cells were more sensitive to etoposide than the original tumor cells. The expression of F-box and WD repeat domain containing 7 (FBW7) was decreased, while the expression of MCL1 apoptosis regulator BCL2 family member (MCL-1) and Bcl-2 was increased, and caspase-3/9 and Bax were not expressed in MDA-MB-231 cells. The resistance to docetaxel and etoposide was reversed, but the sensitivity of paclitaxel was not changed following Bcl-2 silencing. The formation of polyploidy in tumors may be one of the molecular mechanisms underlying tumor resistance to spindle poisons. Expression of the Bcl-2 family members, for example FBW7 and MCL-1, plays a key role in apoptosis and the cell escape process that forms polyploid cells. However, Bcl-2 silencing has different reversal effects on different anti-tumor drugs, which requires further investigation.
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Affiliation(s)
- Bibo Yuan
- Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
| | - Juan Hao
- Department of Gynecology and Obstetrics, Peking University People's Hospital, Beijing 100044, P.R. China
| | - Qian Zhang
- Department of Gynecology and Obstetrics, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Yan Wang
- Department of Gynecology and Obstetrics, Tianjin Jinghai Hospital, Tianjin 301600, P.R. China
| | - Yu Zhu
- Department of Clinical Laboratory, Tianjin Huanhu Hospital, Tianjin 300350, P.R. China
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Amiri A, Hastert F, Stühn L, Dietz C. Structural analysis of healthy and cancerous epithelial-type breast cells by nanomechanical spectroscopy allows us to obtain peculiarities of the skeleton and junctions. NANOSCALE ADVANCES 2019; 1:4853-4862. [PMID: 36133137 PMCID: PMC9418382 DOI: 10.1039/c9na00021f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 10/24/2019] [Indexed: 06/16/2023]
Abstract
The transition of healthy epithelial cells to carcinoma is associated with an alteration in the structure and organization of the cytoskeleton of the cells. A comparison of the mechanical properties of cancerous and healthy cells indicated a higher deformability of the cancer cells based on averaging the mechanical properties of single cells. However, the exact reason for softening of the cancerous cells compared to their counterparts remains unclear. Here, we focused on nanomechanical spectroscopy of healthy and cancerous ductal epithelial-type breast cells by means of atomic force microscopy with high lateral and depth precision. As a result, based on atomic force microscopy measurements formation of significantly fewer microtubules in cancerous cells which was observed in our study is most likely one of the main causes for the overall change in mechanical properties without any phenotypic shift. Strikingly, in a confluent layer of invasive ductal carcinoma cells, we observed the formation of cell-cell junctions that have the potential for signal transduction among neighboring cells such as desmosomes and adherens junctions. This increases the possibility of cancerous cell collaboration in malignancy, infiltration or metastasis phenomena.
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Affiliation(s)
- Anahid Amiri
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt Alarich-Weiss-Str. 2 64287 Darmstadt Germany
| | - Florian Hastert
- Cell Biology and Epigenetics, Department of Biology, Technische Universität Darmstadt 64287 Darmstadt Germany
| | - Lukas Stühn
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt Alarich-Weiss-Str. 2 64287 Darmstadt Germany
| | - Christian Dietz
- Physics of Surfaces, Institute of Materials Science, Technische Universität Darmstadt Alarich-Weiss-Str. 2 64287 Darmstadt Germany
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14
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Umeda S, Kanda M, Miwa T, Tanaka H, Tanaka C, Kobayashi D, Hayashi M, Yamada S, Nakayama G, Koike M, Kodera Y. Fraser extracellular matrix complex subunit 1 promotes liver metastasis of gastric cancer. Int J Cancer 2019; 146:2865-2876. [PMID: 31597194 DOI: 10.1002/ijc.32705] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 08/26/2019] [Accepted: 09/16/2019] [Indexed: 12/18/2022]
Abstract
Liver metastasis is often fatal in patients with gastric cancer, therefore, we aimed to identify genes associated with the mechanisms of liver metastasis of gastric cancer (GC) and to investigate their potential to predict recurrence and to serve as targets of therapy. Recurrence pattern-specific transcriptome analysis was performed to identify liver metastasis-associated genes. A stable knockout cell line was generated to investigate metabolic pathways that contribute to the malignant phenotype in vitro and vivo. Three hundred GC patients were analyzed to demonstrate an association between gene expression levels and clinicopathological parameters. As a results extracellular matrix complex subunit 1 (FRAS1) was identified as a liver metastasis-associated gene. Pathway analysis revealed that FRAS1 expression was significantly correlated with the expression of genes encoding TGFB1, MAP1B, AHNAK, BMP2, MUC1, BIRC5, MET, CDH1, RB1 and MKI67. FRAS1 expression was associated with the activation of the EGFR and PI3K signaling pathways. The proliferation ability of FRAS1 knockout cell line (FRAS1-KO) was inhibited compared to that of the parent cell line through caspase activity increment and cell cycle alteration. FRAS1-KO cells exhibited increased responsiveness to oxygen stress and diminished stemness, invasiveness, and migration. Mouse models of GC revealed decreases in tumor formation and generation of metastasis by FRAS1-KO cells. Moreover, the cumulative liver recurrence rate was significantly increased in patients with GC with high FRAS1 expression levels. We concluded that FRAS1 contributes to the malignant phenotype of GC, especially liver metastasis, and may therefore serve as a predictive marker or a target for treating liver metastasis.
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Affiliation(s)
- Shinichi Umeda
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Mitsuro Kanda
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takashi Miwa
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Haruyoshi Tanaka
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Chie Tanaka
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Daisuke Kobayashi
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masamichi Hayashi
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Suguru Yamada
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Goro Nakayama
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masahiko Koike
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuhiro Kodera
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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15
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Atomic force microscopy-based cancer diagnosis by detecting cancer-specific biomolecules and cells. Biochim Biophys Acta Rev Cancer 2019; 1871:367-378. [DOI: 10.1016/j.bbcan.2019.03.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/21/2019] [Accepted: 03/26/2019] [Indexed: 02/07/2023]
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16
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Expression of Syk and MAP4 proteins in ovarian cancer. J Cancer Res Clin Oncol 2019; 145:909-919. [PMID: 30737623 PMCID: PMC6435630 DOI: 10.1007/s00432-019-02856-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 02/01/2019] [Indexed: 01/05/2023]
Abstract
Purpose We have previously reported on the prognostic importance of the calpain family of proteins in ovarian cancer, especially calpain-2. Spleen tyrosine kinase (Syk) phosphorylates a variety of cytoskeletal proteins with studies suggesting potential interactions between Syk and conventional calpains. Microtubule-associated protein 4 (MAP4) has been reported to be regulated by Syk. Methods The current study assessed Syk and MAP4 protein expression, by immunohistochemistry on a tissue microarray comprised of cores from primary ovarian carcinomas (n = 575), to evaluate associations with patient clinical outcomes and other clinicopathological factors and sought to determine whether there were any correlations between the expression of Syk, MAP4 and the calpain system. Results MAP4 expression was significantly associated with ovarian cancer histological subtype (P < 0.001), stage (P = 0.001), grade (P < 0.001) and residual tumour (P = 0.005). Despite this finding, we found no significant association existing between MAP4 expression and overall survival. Syk expression was also found significantly associated with histological subtype (P < 0.001). Syk seems to play a contradictory role with respect to tumour progression: low cytoplasmic Syk expression was significantly associated with low stage (P = 0.013), and low nuclear Syk expression with chemo-resistance in patients treated with taxane-containing therapy (P = 0.006). Interestingly, despite the lack of association in the whole cohort, high nuclear Syk expression was significantly associated with better overall survival in certain subgroups (P = 0.001). Conclusions The current study indicates a lack of correlation between calpain-2 expression and Syk and MAP4. Syk, MAP4 and calpain-1 appeared to significantly correlate with each other in the whole cohort, with calpain-1 being more highly associated with MAP4 and Syk in mucinous carcinomas. Overall, the current results suggest that Syk, MAP4, and calpain-1 expression are correlated with each other and these proteins may be involved in early stages of tumour spread. Electronic supplementary material The online version of this article (10.1007/s00432-019-02856-9) contains supplementary material, which is available to authorized users.
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Stylianou A, Kontomaris SV, Grant C, Alexandratou E. Atomic Force Microscopy on Biological Materials Related to Pathological Conditions. SCANNING 2019; 2019:8452851. [PMID: 31214274 PMCID: PMC6535871 DOI: 10.1155/2019/8452851] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 02/23/2019] [Accepted: 03/07/2019] [Indexed: 05/16/2023]
Abstract
Atomic force microscopy (AFM) is an easy-to-use, powerful, high-resolution microscope that allows the user to image any surface and under any aqueous condition. AFM has been used in the investigation of the structural and mechanical properties of a wide range of biological matters including biomolecules, biomaterials, cells, and tissues. It provides the capacity to acquire high-resolution images of biosamples at the nanoscale and allows at readily carrying out mechanical characterization. The capacity of AFM to image and interact with surfaces, under physiologically relevant conditions, is of great importance for realistic and accurate medical and pharmaceutical applications. The aim of this paper is to review recent trends of the use of AFM on biological materials related to health and sickness. First, we present AFM components and its different imaging modes and we continue with combined imaging and coupled AFM systems. Then, we discuss the use of AFM to nanocharacterize collagen, the major fibrous protein of the human body, which has been correlated with many pathological conditions. In the next section, AFM nanolevel surface characterization as a tool to detect possible pathological conditions such as osteoarthritis and cancer is presented. Finally, we demonstrate the use of AFM for studying other pathological conditions, such as Alzheimer's disease and human immunodeficiency virus (HIV), through the investigation of amyloid fibrils and viruses, respectively. Consequently, AFM stands out as the ideal research instrument for exploring the detection of pathological conditions even at very early stages, making it very attractive in the area of bio- and nanomedicine.
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Affiliation(s)
- Andreas Stylianou
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 2238, Cyprus
| | - Stylianos-Vasileios Kontomaris
- Mobile Radio Communications Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, Iroon Polytechniou, Athens 15780, Greece
- Athens Metropolitan College, Sorou 74, Marousi 15125, Greece
| | - Colin Grant
- Hitachi High-Technologies Europe, Techspace One, Keckwick Lane, Warrington WA4 4AB, UK
| | - Eleni Alexandratou
- Biomedical Optics and Applied Biophysics Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, Iroon Polytechniou, Athens 15780, Greece
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Cingir Koker S, Jahja E, Shehwana H, Keskus AG, Konu O. Cholinergic Receptor Nicotinic Alpha 5 (CHRNA5) RNAi is associated with cell cycle inhibition, apoptosis, DNA damage response and drug sensitivity in breast cancer. PLoS One 2018; 13:e0208982. [PMID: 30543688 PMCID: PMC6292578 DOI: 10.1371/journal.pone.0208982] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/28/2018] [Indexed: 12/15/2022] Open
Abstract
Cholinergic Receptor Nicotinic Alpha 5 (CHRNA5) is an important susceptibility locus for nicotine addiction and lung cancer. Depletion of CHRNA5 has been associated with reduced cell viability, increased apoptosis and alterations in cellular motility in different cancers yet not in breast cancer. Herein we first showed the expression of CHRNA5 was variable and positively correlated with the fraction of total genomic alterations in breast cancer cell lines and tumors indicating its potential role in DNA damage response (DDR). Next, we demonstrated that silencing of CHRNA5 expression in MCF7 breast cancer cell line by RNAi affected expression of genes involved in cytoskeleton, TP53 signaling, DNA synthesis and repair, cell cycle, and apoptosis. The transcription profile of CHRNA5 depleted MCF7 cells showed a significant positive correlation with that of A549 lung cancer cell line while exhibiting a negative association with the CHRNA5 co-expression profile obtained from Cancer Cell Line Encylopedia (CCLE). Moreover, it exhibited high similarities with published MCF7 expression profiles obtained from exposure to TP53 inducer nutlin-3a and topoisomerase inhibitors. We then demonstrated that CHRNA5 siRNA treatment reduced cell viability and DNA synthesis indicating G1 arrest while it significantly increased apoptotic sub-G1 cell population. Accordingly, we observed lower levels of phosphorylated RB (Ser807/811) and an increased BAX/BCL2 ratio in RNAi treated MCF7 cells. We also showed that CHRNA5 RNAi transcriptome correlated negatively with DDR relevant gene expression profile in breast cancer gene expression datasets while the coexposure to topoisomerase inhibitors in the presence of CHRNA5 RNAi enhanced chemosensitivity potentially due to reduced DDR. CHRNA5 RNAi consistently lowered total CHEK1 mRNA and protein levels as well as phosphorylated CHEK1 (Ser345) in MCF7 cells. We also detected a significant positive correlation between the expression levels of CHRNA5 and CHEK1 in CCLE, TCGA and METABRIC breast cancer datasets. Our study suggests CHRNA5 RNAi is associated with cell cycle inhibition, apoptosis as well as reduced DDR and increased drug sensitivity in breast cancer yet future studies are warranted since dose- and cell line-specific differences exist in response to CHRNA5 depletion. Gene expression microarray data can be accessed from GEO database under the accession number GSE89333.
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Affiliation(s)
- Sahika Cingir Koker
- Department of Molecular Biology and Genetics, Faculty of Science, Bilkent University, Ankara, Turkey
| | - Ermira Jahja
- Department of Molecular Biology and Genetics, Faculty of Science, Bilkent University, Ankara, Turkey
| | - Huma Shehwana
- Department of Molecular Biology and Genetics, Faculty of Science, Bilkent University, Ankara, Turkey
- Department of Multidisciplinary Studies, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Ayse Gokce Keskus
- Interdisciplinary Neuroscience Program, Bilkent University, Ankara, Turkey
| | - Ozlen Konu
- Department of Molecular Biology and Genetics, Faculty of Science, Bilkent University, Ankara, Turkey
- Interdisciplinary Neuroscience Program, Bilkent University, Ankara, Turkey
- UNAM-Institute of Materials Science and Nanotechnology, Ankara, Turkey
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Stylianou A, Lekka M, Stylianopoulos T. AFM assessing of nanomechanical fingerprints for cancer early diagnosis and classification: from single cell to tissue level. NANOSCALE 2018; 10:20930-20945. [PMID: 30406223 DOI: 10.1039/c8nr06146g] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cancer development and progression are closely associated with changes both in the mechano-cellular phenotype of cancer and stromal cells and in the extracellular matrix (ECM) structure, composition, and mechanics. In this paper, we review the use of atomic force microscopy (AFM) as a tool for assessing the nanomechanical fingerprints of solid tumors, so as to be potentially used as a diagnostic biomarker for more accurate identification and early cancer grading/classification. The development of such a methodology is expected to provide new insights and a novel approach for cancer diagnosis. We propose that AFM measurements could be employed to complement standard biopsy procedures, offering an objective, novel and quantitative diagnostic approach with the properties of a blind assay, allowing unbiased evaluation of the sample.
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Affiliation(s)
- Andreas Stylianou
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Cyprus.
| | - Malgorzata Lekka
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Kraków, Poland.
| | - Triantafyllos Stylianopoulos
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Cyprus.
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20
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Mapping heterogeneity of cellular mechanics by multi-harmonic atomic force microscopy. Nat Protoc 2018; 13:2200-2216. [DOI: 10.1038/s41596-018-0031-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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21
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Nader JS, Abadie J, Deshayes S, Boissard A, Blandin S, Blanquart C, Boisgerault N, Coqueret O, Guette C, Grégoire M, Pouliquen DL. Characterization of increasing stages of invasiveness identifies stromal/cancer cell crosstalk in rat models of mesothelioma. Oncotarget 2018; 9:16311-16329. [PMID: 29662647 PMCID: PMC5893242 DOI: 10.18632/oncotarget.24632] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 02/25/2018] [Indexed: 12/11/2022] Open
Abstract
Sarcomatoid mesothelioma (SM) is a devastating cancer associated with one of the poorest outcome. Therefore, representative preclinical models reproducing different tumor microenvironments (TME) observed in patients would open up new prospects for the identification of markers and evaluation of innovative therapies. Histological analyses of four original models of rat SM revealed their increasing infiltrative and metastatic potential were associated with differences in Ki67 index, blood-vessel density, and T-lymphocyte and macrophage infiltration. In comparison with the noninvasive tumor M5-T2, proteomic analysis demonstrated the three invasive tumors F4-T2, F5-T1 and M5-T1 shared in common a very significant increase in the abundance of the multifunctional proteins galectin-3, prohibitin and annexin A5, and a decrease in proteins involved in cell adhesion, tumor suppression, or epithelial differentiation. The increased metastatic potential of the F5-T1 tumor, relative to F4-T2, was associated with an increased macrophage vs T-cell infiltrate, changes in the levels of expression of a panel of cytokine genes, an increased content of proteins involved in chromatin organization, ribosome structure, splicing, or presenting anti-adhesive properties, and a decreased content of proteins involved in protection against oxidative stress, normoxia and intracellular trafficking. The most invasive tumor, M5-T1, was characterized by a pattern of specific phenotypic and molecular features affecting the presentation of MHC class I-mediated antigens and immune cell infiltration, or involved in the reorganization of the cytoskeleton and composition of the extracellular matrix. These four preclinical models and data represent a new resource available to the cancer research community to catalyze further investigations on invasiveness.
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Affiliation(s)
- Joëlle S. Nader
- CRCINA, INSERM, Université d’Angers, Université de Nantes, Nantes, France
| | - Jérôme Abadie
- CRCINA, INSERM, Université d’Angers, Université de Nantes, Nantes, France
- ONIRIS, Nantes, France
| | - Sophie Deshayes
- CRCINA, INSERM, Université d’Angers, Université de Nantes, Nantes, France
| | - Alice Boissard
- CRCINA, INSERM, Université de Nantes, Université d’Angers, Angers, France
- ICO, Angers, France
| | - Stéphanie Blandin
- Plate-Forme MicroPICell, SFR François Bonamy, Université de Nantes, France
| | | | | | - Olivier Coqueret
- CRCINA, INSERM, Université de Nantes, Université d’Angers, Angers, France
- ICO, Angers, France
| | - Catherine Guette
- CRCINA, INSERM, Université de Nantes, Université d’Angers, Angers, France
- ICO, Angers, France
| | - Marc Grégoire
- CRCINA, INSERM, Université d’Angers, Université de Nantes, Nantes, France
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Adeniba OO, Corbin EA, Ewoldt RH, Bashir R. Optomechanical microrheology of single adherent cancer cells. APL Bioeng 2018; 2:016108. [PMID: 31069293 PMCID: PMC6481704 DOI: 10.1063/1.5010721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/18/2018] [Indexed: 01/04/2023] Open
Abstract
There is a close relationship between the mechanical properties of cells and their physiological function. Non-invasive measurements of the physical properties of cells, especially of adherent cells, are challenging to perform. Through a non-contact optical interferometric technique, we measure and combine the phase, amplitude, and frequency of vibrating silicon pedestal micromechanical resonant sensors to quantify the "loss tangent" of individual adherent human colon cancer cells (HT-29). The loss tangent, a dimensionless ratio of viscoelastic energy loss and energy storage - a measure of the viscoelasticity of soft materials, obtained through an optical path length model, was found to be 1.88 ± 0.08 for live cells and 4.32 ± 0.13 for fixed cells, revealing significant changes (p < 0.001) in mechanical properties associated with estimated nanoscale cell membrane fluctuations of 3.86 ± 0.2 nm for live cells and 2.87 ± 0.1 nm for fixed cells. By combining these values with the corresponding two-degree-of-freedom Kelvin-Voigt model, we obtain the elastic stiffness and viscous loss associated with each individual cell rather than estimations from a population. The technique is unique as it decouples the heterogeneity of individual cells in our population and further refines the viscoelastic solution space.
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Affiliation(s)
| | | | - Randy H Ewoldt
- Department of Mechanical Science and Engineering, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, USA
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23
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Zhang W, Chen Y, Xia X, Chu J. Material discrimination and mixture ratio estimation in nanocomposites via harmonic atomic force microscopy. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2017; 8:2771-2780. [PMID: 29354348 PMCID: PMC5753115 DOI: 10.3762/bjnano.8.276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 11/14/2017] [Indexed: 06/07/2023]
Abstract
Harmonic atomic force microscopy (AFM) was employed to discriminate between different materials and to estimate the mixture ratio of the constituent components in nanocomposites. The major influencing factors, namely amplitude feedback set-point, drive frequency and laser spot position along the cantilever beam, were systematically investigated. Employing different set-points induces alternation of tip-sample interaction forces and thus different harmonic responses. The numerical simulations of the cantilever dynamics were well-correlated with the experimental observations. Owing to the deviation of the drive frequency from the fundamental resonance, harmonic amplitude contrast reversal may occur. It was also found that the laser spot position affects the harmonic signal strengths as expected. Based on these investigations, harmonic AFM was employed to identify material components and estimate the mixture ratio in multicomponent materials. The composite samples are composed of different kinds of nanoparticles with almost the same shape and size. Higher harmonic imaging offers better information on the distribution and mixture of different nanoparticles as compared to other techniques, including topography and conventional tapping phase. Therefore, harmonic AFM has potential applications in various fields of nanoscience and nanotechnology.
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Affiliation(s)
- Weijie Zhang
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
| | - Yuhang Chen
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
| | - Xicheng Xia
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
| | - Jiaru Chu
- Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China
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24
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席 作, 梁 伟. [Spleen tyrosine kinase inhibits proliferation and promotes apoptosis of colorectal cancer cells in vitro via regulating Fra-1]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2017; 37:1654-1659. [PMID: 29292261 PMCID: PMC6744020 DOI: 10.3969/j.issn.1673-4254.2017.12.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To investigate the effects of spleen tyrosine kinase (SYK) overexpression on proliferation and apoptosis of colorectal cancer cells and explore the possible mechanism. METHODS The mRNA expressions of SYK and Fra?1 in 10 clinical specimens of colorectal cancer and 10 adjacent tissues were measured with qRT?PCR, and their protein expressions were detected with Western blotting. The recombinant plasmid pcDNA.3.1?SYK was constructed and transfected into colorectal cancer cells to induce SYK overexpression, and the cell viability and proliferation were assessed using by MTT assay and BrdU assay, respectively; caspase?3 activity in the cells was evaluated with a commercial kit and the cell apoptosis was analyzed with Annexin?V FITC/PI assay. RESULTS The expressions of SYK were significantly decreased in colorectal cancer tissues and colorectal cancer cell lines. Transfection of pcDNA.3.1?SYK into the colorectal cancer cells induced obviously upregulated mRNA and protein expressions of SYK, which caused a significant suppression of the cell viability and proliferation and enhancement of the cell apoptosis along with a significant inhibition of Fra?1 expression. CONCLUSION s SYK overexpression inhibits the proliferation and promotes apoptosis of colorectal cancer cells, and these effects are possibly mediated by the regulation of Fra?1 expression by SYK.
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Affiliation(s)
- 作武 席
- 河南省中医院肛肠科,河南 郑州 450000Department of Proctology, Henan Provincial Hospital of Traditional Chinese Medicine, Zhengzhou 450002, China
| | - 伟涛 梁
- 河南中医药大学中医外科,河南 郑州 450000Surgery of Traditional Chinese Medicine, Henan University of Chinese Medicine, Zhengzhou 450046, China
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25
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Efremov YM, Wang WH, Hardy SD, Geahlen RL, Raman A. Measuring nanoscale viscoelastic parameters of cells directly from AFM force-displacement curves. Sci Rep 2017; 7:1541. [PMID: 28484282 PMCID: PMC5431511 DOI: 10.1038/s41598-017-01784-3] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 04/04/2017] [Indexed: 01/12/2023] Open
Abstract
Force-displacement (F-Z) curves are the most commonly used Atomic Force Microscopy (AFM) mode to measure the local, nanoscale elastic properties of soft materials like living cells. Yet a theoretical framework has been lacking that allows the post-processing of F-Z data to extract their viscoelastic constitutive parameters. Here, we propose a new method to extract nanoscale viscoelastic properties of soft samples like living cells and hydrogels directly from conventional AFM F-Z experiments, thereby creating a common platform for the analysis of cell elastic and viscoelastic properties with arbitrary linear constitutive relations. The method based on the elastic-viscoelastic correspondence principle was validated using finite element (FE) simulations and by comparison with the existed AFM techniques on living cells and hydrogels. The method also allows a discrimination of which viscoelastic relaxation model, for example, standard linear solid (SLS) or power-law rheology (PLR), best suits the experimental data. The method was used to extract the viscoelastic properties of benign and cancerous cell lines (NIH 3T3 fibroblasts, NMuMG epithelial, MDA-MB-231 and MCF-7 breast cancer cells). Finally, we studied the changes in viscoelastic properties related to tumorigenesis including TGF-β induced epithelial-to-mesenchymal transition on NMuMG cells and Syk expression induced phenotype changes in MDA-MB-231 cells.
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Affiliation(s)
- Yuri M Efremov
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, 47907, USA.,Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Wen-Horng Wang
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Shana D Hardy
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Robert L Geahlen
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, 47907, USA.,Purdue University Center for Cancer Research, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Arvind Raman
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, 47907, USA. .,Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana, 47907, USA.
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Wu J, He Z, Wang DL, Sun FL. Depletion of JMJD5 sensitizes tumor cells to microtubule-destabilizing agents by altering microtubule stability. Cell Cycle 2016; 15:2980-2991. [PMID: 27715397 DOI: 10.1080/15384101.2016.1234548] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Microtubules play essential roles in mitosis, cell migration, and intracellular trafficking. Drugs that target microtubules have demonstrated great clinical success in cancer treatment due to their capacity to impair microtubule dynamics in both mitotic and interphase stages. In a previous report, we demonstrated that JMJD5 associated with mitotic spindle and was required for proper mitosis. However, it remains elusive whether JMJD5 could regulate the stability of cytoskeletal microtubules and whether it affects the efficacy of microtubule-targeting agents. In this study, we find that JMJD5 localizes not only to the nucleus, a fraction of it also localizes to the cytoplasm. JMJD5 depletion decreases the acetylation and detyrosination of α-tubulin, both of which are markers of microtubule stability. In addition, microtubules in JMJD5-depleted cells are more sensitive to nocodazole-induced depolymerization, whereas JMJD5 overexpression increases α-tubulin detyrosination and enhances the resistance of microtubules to nocodazole. Mechanistic studies revealed that JMJD5 regulates MAP1B protein levels and that MAP1B overexpression rescued the microtubule destabilization induced by JMJD5 depletion. Furthermore, JMJD5 depletion significantly promoted apoptosis in cancer cells treated with the microtubule-targeting anti-cancer drugs vinblastine or colchicine. Together, these findings suggest that JMJD5 is required to regulate the stability of cytoskeletal microtubules and that JMJD5 depletion increases the susceptibility of cancer cells to microtubule-destabilizing agents.
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Affiliation(s)
- Junyu Wu
- a Department of Basic Medical Sciences , School of Medicine, Tsinghua University , Beijing , China
| | - Zhimin He
- a Department of Basic Medical Sciences , School of Medicine, Tsinghua University , Beijing , China
| | - Da-Liang Wang
- a Department of Basic Medical Sciences , School of Medicine, Tsinghua University , Beijing , China
| | - Fang-Lin Sun
- a Department of Basic Medical Sciences , School of Medicine, Tsinghua University , Beijing , China.,b Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Tongji University , Shanghai , China
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Developments in dynamic atomic force microscopy techniques to characterize viscoelastic behaviors of food materials at the nanometer-scale. Curr Opin Food Sci 2016. [DOI: 10.1016/j.cofs.2016.09.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Stylianou A, Stylianopoulos T. Atomic Force Microscopy Probing of Cancer Cells and Tumor Microenvironment Components. BIONANOSCIENCE 2015. [DOI: 10.1007/s12668-015-0187-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Yu Y, Gaillard S, Phillip JM, Huang TC, Pinto SM, Tessarollo NG, Zhang Z, Pandey A, Wirtz D, Ayhan A, Davidson B, Wang TL, Shih IM. Inhibition of Spleen Tyrosine Kinase Potentiates Paclitaxel-Induced Cytotoxicity in Ovarian Cancer Cells by Stabilizing Microtubules. Cancer Cell 2015; 28:82-96. [PMID: 26096845 PMCID: PMC5257279 DOI: 10.1016/j.ccell.2015.05.009] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 03/11/2015] [Accepted: 05/12/2015] [Indexed: 01/25/2023]
Abstract
Resistance to chemotherapy represents a major obstacle for long-term remission, and effective strategies to overcome drug resistance would have significant clinical impact. We report that recurrent ovarian carcinomas after paclitaxel/carboplatin treatment have higher levels of spleen tyrosine kinase (SYK) and phospho-SYK. In vitro, paclitaxel-resistant cells expressed higher SYK, and the ratio of phospho-SYK/SYK positively associated with paclitaxel resistance in ovarian cancer cells. Inactivation of SYK by inhibitors or gene knockdown sensitized paclitaxel cytotoxicity in vitro and in vivo. Analysis of the phosphotyrosine proteome in paclitaxel-resistant tumor cells revealed that SYK phosphorylates tubulins and microtubule-associated proteins. Inhibition of SYK enhanced microtubule stability in paclitaxel-resistant tumor cells that were otherwise insensitive. Thus, targeting SYK pathway is a promising strategy to enhance paclitaxel response.
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Affiliation(s)
- Yu Yu
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| | - Stephanie Gaillard
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| | - Jude M Phillip
- Department of Chemical and Biomolecular Engineering, Physical Sciences-Oncology Center, and Institute for NanoBioTechology, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Tai-Chung Huang
- Department of Biological Chemistry and Oncology, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| | - Sneha M Pinto
- Department of Biological Chemistry and Oncology, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| | - Nayara G Tessarollo
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA; Biotechnology Program/Renorbio, Health Science Center, Federal University of Espirito Santo, Vitória 29075-910, Brazil
| | - Zhen Zhang
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| | - Akhilesh Pandey
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA; Department of Biological Chemistry and Oncology, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA
| | - Denis Wirtz
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA; Department of Chemical and Biomolecular Engineering, Physical Sciences-Oncology Center, and Institute for NanoBioTechology, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Ayse Ayhan
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA; Department of Pathology, Seirei Mikatahara Hospital and Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
| | - Ben Davidson
- Department of Pathology, Oslo University Hospital, Norwegian Radium Hospital, 0310 Oslo, Norway; Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, 0316 Oslo, Norway
| | - Tian-Li Wang
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA.
| | - Ie-Ming Shih
- Department of Pathology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD 21205, USA; Department of Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD 21287, USA.
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30
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Cartagena-Rivera AX, Wang WH, Geahlen RL, Raman A. Fast, multi-frequency, and quantitative nanomechanical mapping of live cells using the atomic force microscope. Sci Rep 2015; 5:11692. [PMID: 26118423 PMCID: PMC4484408 DOI: 10.1038/srep11692] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 06/03/2015] [Indexed: 11/08/2022] Open
Abstract
A longstanding goal in cellular mechanobiology has been to link dynamic biomolecular processes underpinning disease or morphogenesis to spatio-temporal changes in nanoscale mechanical properties such as viscoelasticity, surface tension, and adhesion. This requires the development of quantitative mechanical microscopy methods with high spatio-temporal resolution within a single cell. The Atomic Force Microscope (AFM) can map the heterogeneous mechanical properties of cells with high spatial resolution, however, the image acquisition time is 1-2 orders of magnitude longer than that required to study dynamic cellular processes. We present a technique that allows commercial AFM systems to map quantitatively the dynamically changing viscoelastic properties of live eukaryotic cells at widely separated frequencies over large areas (several 10's of microns) with spatial resolution equal to amplitude-modulation (AM-AFM) and with image acquisition times (tens of seconds) approaching those of speckle fluorescence methods. This represents a ~20 fold improvement in nanomechanical imaging throughput compared to AM-AFM and is fully compatible with emerging high speed AFM systems. This method is used to study the spatio-temporal mechanical response of MDA-MB-231 breast carcinoma cells to the inhibition of Syk protein tyrosine kinase giving insight into the signaling pathways by which Syk negatively regulates motility of highly invasive cancer cells.
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Affiliation(s)
- Alexander X. Cartagena-Rivera
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana, USA
| | - Wen-Horng Wang
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
| | - Robert L. Geahlen
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
- Purdue University Center for Cancer Research, Purdue University, West Lafayette, Indiana, USA
| | - Arvind Raman
- School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana, USA
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31
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Lee NS, Evgrafov OV, Souaiaia T, Bonyad A, Herstein J, Lee JY, Kim J, Ning Y, Sixto M, Weitz AC, Lenz HJ, Wang K, Knowles JA, Press MF, Salvaterra PM, Shung KK, Chow RH. Non-coding RNAs derived from an alternatively spliced REST transcript (REST-003) regulate breast cancer invasiveness. Sci Rep 2015; 5:11207. [PMID: 26053433 PMCID: PMC4459148 DOI: 10.1038/srep11207] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 04/17/2015] [Indexed: 11/29/2022] Open
Abstract
RE1-Silencing Transcription factor (REST) has a well-established role in regulating transcription of genes important for neuronal development. Its role in cancer, though significant, is less well understood. We show that REST downregulation in weakly invasive MCF-7 breast cancer cells converts them to a more invasive phenotype, while REST overexpression in highly invasive MDA-MB-231 cells suppresses invasiveness. Surprisingly, the mechanism responsible for these phenotypic changes does not depend directly on the transcriptional function of REST protein. Instead, it is driven by previously unstudied mid-size (30–200 nt) non-coding RNAs (ncRNAs) derived from the first exon of an alternatively spliced REST transcript: REST-003. We show that processing of REST-003 into ncRNAs is controlled by an uncharacterized serine/arginine repeat-related protein, SRRM3. SRRM3 expression may be under REST-mediated transcriptional control, as it increases following REST downregulation. The SRRM3-dependent regulation of REST-003 processing into ncRNAs has many similarities to recently described promoter-associated small RNA-like processes. Targeting ncRNAs that control invasiveness could lead to new therapeutic approaches to limit breast cancer metastasis.
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Affiliation(s)
- Nan Sook Lee
- 1] Physiology &Biophysics and Zilkha Neurogenetic Institute, University of Southern California, Los Angeles [2] Dept of Biomedical Engineering, University of Southern California, Los Angeles
| | - Oleg V Evgrafov
- Psychiatry &the Behavioral Sciences, University of Southern California, Los Angeles
| | - Tade Souaiaia
- Psychiatry &the Behavioral Sciences, University of Southern California, Los Angeles
| | - Adrineh Bonyad
- Physiology &Biophysics and Zilkha Neurogenetic Institute, University of Southern California, Los Angeles
| | - Jennifer Herstein
- Psychiatry &the Behavioral Sciences, University of Southern California, Los Angeles
| | - Joo Yeun Lee
- Neuroscience Graduate Program, University of Southern California, Los Angeles
| | - Jihong Kim
- Psychiatry &the Behavioral Sciences, University of Southern California, Los Angeles
| | - Yan Ning
- Dept of Medicine, Norris Cancer Center, University of Southern California, Los Angeles
| | | | - Andrew C Weitz
- Dept of Ophthalmology, University of Southern California, Los Angeles, CA
| | - Heinz-Josef Lenz
- Dept of Medicine, Norris Cancer Center, University of Southern California, Los Angeles
| | - Kai Wang
- Psychiatry &the Behavioral Sciences, University of Southern California, Los Angeles
| | - James A Knowles
- Psychiatry &the Behavioral Sciences, University of Southern California, Los Angeles
| | - Michael F Press
- Dept of Pathology, Norris Cancer Center, University of Southern California, Los Angeles
| | - Paul M Salvaterra
- Department of Neuroscience, Beckman Research Institute of the City of Hope, Duarte, CA
| | - K Kirk Shung
- Dept of Biomedical Engineering, University of Southern California, Los Angeles
| | - Robert H Chow
- Physiology &Biophysics and Zilkha Neurogenetic Institute, University of Southern California, Los Angeles
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32
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Babahosseini H, Carmichael B, Strobl JS, Mahmoodi SN, Agah M. Sub-cellular force microscopy in single normal and cancer cells. Biochem Biophys Res Commun 2015; 463:587-92. [PMID: 26036579 DOI: 10.1016/j.bbrc.2015.05.100] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 05/28/2015] [Indexed: 01/26/2023]
Abstract
This work investigates the biomechanical properties of sub-cellular structures of breast cells using atomic force microscopy (AFM). The cells are modeled as a triple-layered structure where the Generalized Maxwell model is applied to experimental data from AFM stress-relaxation tests to extract the elastic modulus, the apparent viscosity, and the relaxation time of sub-cellular structures. The triple-layered modeling results allow for determination and comparison of the biomechanical properties of the three major sub-cellular structures between normal and cancerous cells: the up plasma membrane/actin cortex, the mid cytoplasm/nucleus, and the low nuclear/integrin sub-domains. The results reveal that the sub-domains become stiffer and significantly more viscous with depth, regardless of cell type. In addition, there is a decreasing trend in the average elastic modulus and apparent viscosity of the all corresponding sub-cellular structures from normal to cancerous cells, which becomes most remarkable in the deeper sub-domain. The presented modeling in this work constitutes a unique AFM-based experimental framework to study the biomechanics of sub-cellular structures.
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Affiliation(s)
- H Babahosseini
- VT MEMS Laboratory, The Bradley Department of Electrical and Computer Engineering, Blacksburg, VA 24061, USA
| | - B Carmichael
- Nonlinear Intelligent Structures Laboratory, Department of Mechanical Engineering, University of Alabama, Tuscaloosa, AL 35487-0276, USA
| | - J S Strobl
- VT MEMS Laboratory, The Bradley Department of Electrical and Computer Engineering, Blacksburg, VA 24061, USA
| | - S N Mahmoodi
- Nonlinear Intelligent Structures Laboratory, Department of Mechanical Engineering, University of Alabama, Tuscaloosa, AL 35487-0276, USA.
| | - M Agah
- VT MEMS Laboratory, The Bradley Department of Electrical and Computer Engineering, Blacksburg, VA 24061, USA.
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33
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Krisenko MO, Geahlen RL. Calling in SYK: SYK's dual role as a tumor promoter and tumor suppressor in cancer. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1853:254-63. [PMID: 25447675 DOI: 10.1016/j.bbamcr.2014.10.022] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 10/21/2014] [Accepted: 10/27/2014] [Indexed: 12/18/2022]
Abstract
SYK (spleen tyrosine kinase) is well-characterized in the immune system as an essential enzyme required for signaling through multiple classes of immune recognition receptors. As a modulator of tumorigenesis, SYK has a bit of a schizophrenic reputation, acting in some cells as a tumor promoter and in others as a tumor suppressor. In many hematopoietic malignancies, SYK provides an important survival function and its inhibition or silencing frequently leads to apoptosis. In cancers of non-immune cells, SYK provides a pro-survival signal, but can also suppress tumorigenesis by restricting epithelial-mesenchymal transition, enhancing cell-cell interactions and inhibiting migration.
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Affiliation(s)
- Mariya O Krisenko
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue Center for Cancer Research, Purdue University, West Lafayette, IN 47907, United States
| | - Robert L Geahlen
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue Center for Cancer Research, Purdue University, West Lafayette, IN 47907, United States.
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