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Chang C, Li L, Su L, Yang F, Zha Q, Sun M, Tao L, Wang M, Song K, Jiang L, Gao H, Liang Y, Xu C, Yong C, Wang M, Huang J, Liu J, Jin W, Lv W, Dong H, Li Q, Bu F, Yan S, Qi H, Zhao S, Zhu Y, Wang Y, Shi J, Qiao Y, Xu J, Chabot B, Chen J. Intron Retention of DDX39A Driven by SNRPD2 is a Crucial Splicing Axis for Oncogenic MYC/Spliceosome Program in Hepatocellular Carcinoma. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2403387. [PMID: 39018261 PMCID: PMC11425265 DOI: 10.1002/advs.202403387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 07/03/2024] [Indexed: 07/19/2024]
Abstract
RNA splicing is a dynamic molecular process in response to environmental stimuli and is strictly regulated by the spliceosome. Sm proteins, constituents of the spliceosome, are key components that mediate splicing reactions; however, their potential role in hepatocellular carcinoma (HCC) is poorly understood. In the study, SNRPD2 (PD2) is found to be the most highly upregulated Sm protein in HCC and to act as an oncogene. PD2 modulates DDX39A intron retention together with HNRNPL to sustain the DDX39A short variant (39A_S) expression. Mechanistically, 39A_S can mediate MYC mRNA nuclear export to maintain high MYC protein expression, while MYC in turn potentiates PD2 transcription. Importantly, digitoxin can directly interact with PD2 and has a notable cancer-suppressive effect on HCC. The study reveals a novel mechanism by which DDX39A senses oncogenic MYC signaling and undergoes splicing via PD2 to form a positive feedback loop in HCC, which can be targeted by digitoxin.
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Affiliation(s)
- Cunjie Chang
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Lina Li
- Medical Molecular Biology Laboratory, Medical College, Jinhua University of Vocational Technology, Jinhua, 321016, P.R. China
| | - Ling Su
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Fan Yang
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Quanxiu Zha
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Mengqing Sun
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Lin Tao
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Menglan Wang
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Kangli Song
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Liangyu Jiang
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Haojin Gao
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Yexin Liang
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Chao Xu
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Caiyu Yong
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Minmin Wang
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Jiacheng Huang
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Jing Liu
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Weiwei Jin
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Wenyuan Lv
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Heng Dong
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Qian Li
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Fangtian Bu
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Shuanghong Yan
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Haoxiang Qi
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Shujuan Zhao
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Yingshuang Zhu
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
- School of Public Health, Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Yu Wang
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
- Laboratory of Cancer Genomics, Division of Cellular and Molecular Research, National Cancer Centre, Singapore, 169610, Singapore
| | - Junping Shi
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
| | - Yiting Qiao
- The First Affiliated Hospital, Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou, 310003, P. R. China
| | - Jian Xu
- Hepatobiliary and Liver transplantation Department of Hainan Digestive Disease Center, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570216, P. R. China
| | - Benoit Chabot
- Département de Microbiologie et d'Infectiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, QC, J1E 4K8, Canada
| | - Jianxiang Chen
- School of Pharmacy and Department of Hepatology, the Affiliated Hospital of Hangzhou Normal, University Hangzhou Normal University, Hangzhou, 311121, P. R. China
- Laboratory of Cancer Genomics, Division of Cellular and Molecular Research, National Cancer Centre, Singapore, 169610, Singapore
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, School of Pharmacy, Hangzhou Normal University, Hangzhou, 311121, P. R. China
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Eldawud R, Wagner A, Dong C, Gupta N, Rojanasakul Y, O'Doherty G, Stueckle TA, Dinu CZ. Potential antitumor activity of digitoxin and user-designed analog administered to human lung cancer cells. Biochim Biophys Acta Gen Subj 2020; 1864:129683. [PMID: 32679249 DOI: 10.1016/j.bbagen.2020.129683] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/19/2020] [Accepted: 07/09/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Cardiac glycosides (CGs), such as digitoxin, are traditionally used for treatment of congestive heart failure; recently they also gained attention for their anticancer properties. Previous studies showed that digitoxin and a synthetic L-sugar monosaccharide analog treatment decreases cancer cell proliferation, increases apoptosis, and pro-adhesion abilities; however, no reports are available on their potential to alter lung cancer cell cytoskeleton structure and reduce migratory ability. Herein, we investigated the anticancer effects of digitoxin and its analog, digitoxigenin-α-L-rhamnoside (D6MA), to establish whether cytoskeleton reorganization and reduced motility are drug-induced cellular outcomes. METHODS We treated non-small cell lung carcinoma cells (NSCLCs) with sub-therapeutic, therapeutic, and toxic concentrations of digitoxin and D6MA respectively, followed by both single point and real-time assays to evaluate changes in cellular gene and protein expression, adhesion, elasticity, and migration. RESULTS Digitoxin and D6MA induced a decrease in matrix metalloproteinases expression via altered focal adhesion signaling and a suppression of the phosphoinositide 3-kinases / protein kinase B pathway which lead to enhanced adhesion, altered elasticity, and reduced motility of NSCLCs. Global gene expression analysis identified dose-dependent changes to nuclear factor kappa-light-chain-enhancer, epithelial tumor, and microtubule dynamics signaling. CONCLUSIONS Our study demonstrates that digitoxin and D6MA can target antitumor signaling pathways to alter NSCLC cytoskeleton and migratory ability to thus potentially reduce their tumorigenicity. SIGNIFICANCE Discovering signaling pathways that control cancer's cell phenotype and how such pathways are affected by CG treatment will potentially allow for active usage of synthetic CG analogs as therapeutic agents in advanced lung conditions.
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Affiliation(s)
- Reem Eldawud
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Alixandra Wagner
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Chenbo Dong
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Neha Gupta
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Yon Rojanasakul
- Department of Basic Pharmaceutical Sciences, West Virginia University, Morgantown, WV 26506, USA
| | - George O'Doherty
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA
| | - Todd A Stueckle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Cerasela Zoica Dinu
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
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Stueckle TA, White A, Wagner A, Gupta RK, Rojanasakul Y, Dinu CZ. Impacts of Organomodified Nanoclays and Their Incinerated Byproducts on Bronchial Cell Monolayer Integrity. Chem Res Toxicol 2019; 32:2445-2458. [PMID: 31698904 DOI: 10.1021/acs.chemrestox.9b00277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Incorporation of engineered nanomaterials (ENMs) into nanocomposites using advanced manufacturing strategies is set to revolutionize diverse technologies. Of these, organomodified nanoclays (ONCs; i.e., smectite clays with different organic coatings) act as nanofillers in applications ranging from automotive to aerospace and biomedical systems. Recent toxicological evaluations increased awareness that exposure to ONC can occur along their entire life cycle, namely, during synthesis, handling, use, manipulation, and disposal. Compared to other ENMs, however, little information exists describing which physicochemical properties contribute to induced health risk. This study conducted high content screening on bronchial epithelial cell monolayers for coupled high-throughput in vitro assessment strategies aimed to evaluate acute toxicity of a library of ONCs (all of prevalent use) prior to and after simulated disposal by incineration. Coating-, incineration status-, and time-dependent effects were considered to determine changes in the pulmonary monolayer integrity, cell transepithelial resistance, apoptosis, and cell metabolism. Results showed that after exposure to each ONC at its half-maximal inhibitory concentration (IC50) there is a material-induced toxicity effect with pristine nanoclay, for instance, displaying acute loss of monolayer coverage, resistance, and metabolism, coupled with increased number of apoptotic cells. Conversely, the other three ONCs tested displayed little loss of monolayer integrity; however, they exhibited differential coating-dependent increased apoptosis and up to 40-45% initial reduction in cell metabolism. Moreover, incinerated byproducts of ONCs exhibited significant loss of monolayer coverage and integrity, increased necrosis, with little evidence of monolayer re-establishment. These findings indicate that characteristics of organic coating type largely determine the mechanism of cytotoxicity and the ability of the monolayer to recover. Use of high content screening coupled with traditional in vitro assays proves to serve as a rapid pulmonary toxicity assessment tool to help define prevention by targeted physicochemical material properties design strategies.
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Affiliation(s)
- Todd A Stueckle
- Health Effects Laboratory Division , National Institute for Occupational Safety and Health , Morgantown , West Virginia 26505 , United States
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Seidel D, Rothe R, Kirsten M, Jahnke HG, Dumann K, Ziemer M, Simon JC, Robitzki AA. A multidimensional impedance platform for the real-time analysis of single and combination drug pharmacology in patient-derived viable melanoma models. Biosens Bioelectron 2018; 123:185-194. [PMID: 30201332 DOI: 10.1016/j.bios.2018.08.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/14/2018] [Accepted: 08/20/2018] [Indexed: 02/06/2023]
Abstract
In today's development of anticancer drugs, there is an enormous demand for sensitive, non-invasive real-time screening technologies to identify pharmacodynamics/-kinetics of single and combined drugs with high precision. The combination of sophisticated drug sensitivity testing with advanced in vitro tumor models reflecting heterogeneous tumor behavior in vivo is needed to more reasonably predict therapeutic outcome in vivo. In this study, the benefits of our real-time, non-invasive multidimensional impedance platform over standard in vitro drug sensitivity assays were demonstrated quantitatively using an advanced melanoma model. Detailed pharmacological profiles of clinically established targeted therapeutics in single and combination treatment have been identified in patient tissue and isolated 2D/3D cell line cultures. Impedance spectroscopy revealed significant differences in tissue structure responsible for BRAF inhibitor pharmacokinetics in BRAFV600E tumor microfragments and cell lines. Remarkably, BRAF-/MEK inhibitor combination treatment of direct patient-derived tissue, but not melanoma cell lines, resulted in short-term antagonistic effects consistent with in vivo findings. In contrast, the clinically validated resistance delay and thus long-term synergy of targeted therapeutics in advanced melanoma models has been demonstrated using impedance technology. The results demonstrate limited clinical transferability of 2D/3D cancer cell line-based chemosensitivity data and underline the importance of in vivo-like direct patient-derived tissue for predictive drug studies. Our non-invasive and highly sensitive multidimensional impedance platform offers great potential for quantifying short- and long-term drug kinetics and synergies to identify the most effective drug combinations in advanced cancer models, thereby improving personalized drug development and treatment planning and ultimately, overall patient outcomes.
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Affiliation(s)
- Diana Seidel
- Center for Biotechnology and Biomedicine (BBZ), Universität Leipzig, Division of Molecular Biological-Biochemical Processing Technology, Deutscher Platz 5, 04103 Leipzig, Germany
| | - Rebecca Rothe
- Center for Biotechnology and Biomedicine (BBZ), Universität Leipzig, Division of Molecular Biological-Biochemical Processing Technology, Deutscher Platz 5, 04103 Leipzig, Germany
| | - Mandy Kirsten
- Center for Biotechnology and Biomedicine (BBZ), Universität Leipzig, Division of Molecular Biological-Biochemical Processing Technology, Deutscher Platz 5, 04103 Leipzig, Germany
| | - Heinz-Georg Jahnke
- Center for Biotechnology and Biomedicine (BBZ), Universität Leipzig, Division of Molecular Biological-Biochemical Processing Technology, Deutscher Platz 5, 04103 Leipzig, Germany
| | - Konstantin Dumann
- Leipzig University Medical Center, Department of Dermatology, Venerology and Allergology, Philipp-Rosenthal-Str. 23, 04103 Leipzig, Germany
| | - Mirjana Ziemer
- Leipzig University Medical Center, Department of Dermatology, Venerology and Allergology, Philipp-Rosenthal-Str. 23, 04103 Leipzig, Germany
| | - Jan-Christoph Simon
- Leipzig University Medical Center, Department of Dermatology, Venerology and Allergology, Philipp-Rosenthal-Str. 23, 04103 Leipzig, Germany
| | - Andrea A Robitzki
- Center for Biotechnology and Biomedicine (BBZ), Universität Leipzig, Division of Molecular Biological-Biochemical Processing Technology, Deutscher Platz 5, 04103 Leipzig, Germany.
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Eldawud R, Wagner A, Dong C, Stueckle TA, Rojanasakul Y, Dinu CZ. Carbon nanotubes physicochemical properties influence the overall cellular behavior and fate. NANOIMPACT 2018; 9:72-84. [PMID: 31544167 PMCID: PMC6753956 DOI: 10.1016/j.impact.2017.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The unique properties of single walled carbon nanotubes (SWCNTs) make them viable candidates for versatile implementation in the next generation of biomedical devices for targeted delivery of chemotherapeutic agents or cellular-sensing probes. Such implementation requires user-tailored changes in SWCNT's physicochemical characteristics to allow for efficient cellular integration while maintaining nanotubes' functionality. However, isolated reports showed that user-tailoring could induce deleterious effects in exposed cells, from decrease in cellular proliferation, to changes in cellular adhesion, generation of reactive oxygen species or phenotypical variations, just to name a few. Before full implementation of SWCNTs is achieved, their toxicological profiles need to be mechanistically correlated with their physicochemical properties to determine how the induced cellular fate is related to the exposure conditions or samples' characteristics. Our study provides a comprehensive analysis of the synergistic cyto- and genotoxic effects resulted from short-term exposure of human lung epithelial cells to pristine (as manufactured) and user-tailored SWCNTs, as a function of their physicochemical properties. Specifically, through a systematic approach we are correlating the nanotube uptake and nanotube-induced cellular changes to the sample's physicochemical characteristics (e.g., metal impurities, length, agglomerate size, surface area, dispersion, and surface functionalization). By identifying changes in active hallmarks involved in cell-cell connections and maintaining epithelial layer integrity, we also determine the role that short-term exposure to SWCNTs plays in the overall cellular fate and cellular transformation. Lastly, we assess cellular structure-function relationships to identify non-apoptotic pathways induced by SWCNTs exposure that could however lead to changes in cellular behavior and cellular transformation. Our results show that the degree of cell transformation is a function of the physicochemical properties of the SWCNT, with the nanotube with higher length, higher metal content and larger agglomerate size reducing cell viability to a larger extent. Such changes in cell viability are also complemented by changes in cell structure, cycle and cell-cell interactions, all responsible for maintaining cell fate.
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Affiliation(s)
- Reem Eldawud
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Alixandra Wagner
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Chenbo Dong
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Todd A. Stueckle
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Yon Rojanasakul
- Department of Pharmaceutical Sciences, West Virginia University, WV 26506, USA
| | - Cerasela Zoica Dinu
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
- Department of Pharmaceutical Sciences, West Virginia University, WV 26506, USA
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Wagner A, Eldawud R, White A, Agarwal S, Stueckle TA, Sierros KA, Rojanasakul Y, Gupta RK, Dinu CZ. Toxicity evaluations of nanoclays and thermally degraded byproducts through spectroscopical and microscopical approaches. Biochim Biophys Acta Gen Subj 2016; 1861:3406-3415. [PMID: 27612663 DOI: 10.1016/j.bbagen.2016.09.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/23/2016] [Accepted: 09/04/2016] [Indexed: 01/03/2023]
Abstract
BACKGROUND Montmorillonite is a type of nanoclay that originates from the clay fraction of the soil and is incorporated into polymers to form nanocomposites with enhanced mechanical strength, barrier, and flammability properties used for food packaging, automotive, and medical devices. However, with implementation in such consumer applications, the interaction of montmorillonite-based composites or derived byproducts with biological systems needs to be investigated. METHODS Herein we examined the potential of Cloisite Na+ (pristine) and Cloisite 30B (organically modified montmorillonite nanoclay) and their thermally degraded byproducts' to induce toxicity in model human lung epithelial cells. The experimental set-up mimicked biological exposure in manufacturing and disposal areas and employed cellular treatments with occupationally relevant doses of nanoclays previously characterized using spectroscopical and microscopical approaches. For nanoclay-cellular interactions and for cellular analyses respectively, biosensorial-based analytical platforms were used, with induced cellular changes being confirmed via live cell counts, viability assays, and cell imaging. RESULTS Our analysis of byproducts' chemical and physical properties revealed both structural and functional changes. Real-time high throughput analyses of exposed cellular systems confirmed that nanoclay induced significant toxic effects, with Cloisite 30B showing time-dependent decreases in live cell count and cellular viability relative to control and pristine nanoclay, respectively. Byproducts produced less toxic effects; all treatments caused alterations in the cell morphology upon exposure. CONCLUSIONS Our morphological, behavioral, and viability cellular changes show that nanoclays have the potential to produce toxic effects when used both in manufacturing or disposal environments. GENERAL SIGNIFICANCE The reported toxicological mechanisms prove the extensibility of a biosensorial-based platform for cellular behavior analysis upon treatment with a variety of nanomaterials.
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Affiliation(s)
- Alixandra Wagner
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Reem Eldawud
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Andrew White
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Sushant Agarwal
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Todd A Stueckle
- National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA
| | - Konstantinos A Sierros
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506, USA
| | - Yon Rojanasakul
- Department of Pharmaceutical Sciences, West Virginia University, Morgantown, WV, 26506, USA
| | - Rakesh K Gupta
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA.
| | - Cerasela Zoica Dinu
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA.
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Digitoxin enhances the growth inhibitory effects of thapsigargin and simvastatin on ER negative human breast cancer cells. Fitoterapia 2016; 109:146-54. [DOI: 10.1016/j.fitote.2015.12.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/07/2015] [Accepted: 12/10/2015] [Indexed: 12/20/2022]
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8
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Eldawud R, Reitzig M, Opitz J, Rojansakul Y, Jiang W, Nangia S, Dinu CZ. Combinatorial approaches to evaluate nanodiamond uptake and induced cellular fate. NANOTECHNOLOGY 2016; 27:085107. [PMID: 26820775 PMCID: PMC4889219 DOI: 10.1088/0957-4484/27/8/085107] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Nanodiamonds (NDs) are an emerging class of engineered nanomaterials that hold great promise for the next generation of bionanotechnological products to be used for drug and gene delivery, or for bio-imaging and biosensing. Previous studies have shown that upon their cellular uptake, NDs exhibit high biocompatibility in various in vitro and in vivo set-ups. Herein we hypothesized that the increased NDs biocompatibility is a result of minimum membrane perturbations and their reduced ability to induce disruption or damage during cellular translocation. Using multi-scale combinatorial approaches that simulate ND-membrane interactions, we correlated NDs real-time cellular uptake and kinetics with the ND-induced membrane fluctuations to derive energy requirements for the uptake to occur. Our discrete and real-time analyses showed that the majority of NDs internalization occurs within 2 h of cellular exposure, however, with no effects on cellular viability, proliferation or cellular behavior. Furthermore, our simulation analyses using coarse-grained models identified key changes in the energy profile, membrane deformation and recovery time, all functions of the average ND or ND-based agglomerate size. Understanding the mechanisms responsible for ND-cell membrane interactions could possibly advance their implementation in various biomedical applications.
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Affiliation(s)
- Reem Eldawud
- Department of Chemical Engineering, West Virginia University, WV, USA
| | - Manuela Reitzig
- Fraunhofer Institute for Ceramic Technologies and Systems, Dresden, Germany
| | - Jörg Opitz
- Fraunhofer Institute for Ceramic Technologies and Systems, Dresden, Germany
| | - Yon Rojansakul
- Department of Pharmaceutical Sciences, West Virginia University, WV, USA
| | - Wenjuan Jiang
- Department of Biomedical and Chemical Engineering, Syracuse University, NY, USA
| | - Shikha Nangia
- Department of Biomedical and Chemical Engineering, Syracuse University, NY, USA
| | - Cerasela Zoica Dinu
- Department of Chemical Engineering, West Virginia University, WV, USA
- Department of Pharmaceutical Sciences, West Virginia University, WV, USA
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Eldawud R, Wagner A, Dong C, Rojansakul Y, Zoica Dinu C. Electronic platform for real-time multi-parametric analysis of cellular behavior post-exposure to single-walled carbon nanotubes. Biosens Bioelectron 2015; 71:269-277. [PMID: 25913448 DOI: 10.1016/j.bios.2015.04.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 04/10/2015] [Accepted: 04/14/2015] [Indexed: 12/28/2022]
Abstract
Single-walled carbon nanotubes (SWCNTs) implementation in a variety of biomedical applications from bioimaging, to controlled drug delivery and cellular-directed alignment for muscle myofiber fabrication, has raised awareness of their potential toxicity. Nanotubes structural aspects which resemble asbestos, as well as their ability to induce cyto and genotoxicity upon interaction with biological systems by generating reactive oxygen species or inducing membrane damage, just to name a few, have led to focused efforts aimed to assess associated risks prior their user implementation. In this study, we employed a non-invasive and real-time electric cell impedance sensing (ECIS) platform to monitor behavior of lung epithelial cells upon exposure to a library of SWCNTs with user-defined physico-chemical properties. Using the natural sensitivity of the cells, we evaluated SWCNT-induced cellular changes in relation to cell attachment, cell-cell interactions and cell viability respectively. Our methods have the potential to lead to the development of standardized assays for risk assessment of other nanomaterials as well as risk differentiation based on the nanomaterials surface chemistry, purity and agglomeration state.
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Affiliation(s)
- Reem Eldawud
- Department of Chemical Engineering, West Virginia University, WV 26506, United States
| | - Alixandra Wagner
- Department of Chemical Engineering, West Virginia University, WV 26506, United States
| | - Chenbo Dong
- Department of Chemical Engineering, West Virginia University, WV 26506, United States
| | - Yon Rojansakul
- Department of Basic Pharmaceutical Sciences, West Virginia University, WV 26505, United States
| | - Cerasela Zoica Dinu
- Department of Chemical Engineering, West Virginia University, WV 26506, United States; Department of Basic Pharmaceutical Sciences, West Virginia University, WV 26505, United States.
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