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Liu R, Song H, Wu H, Yang Z, Fang S, Zhu J, Ba L. Sub-femtomolar vertical graphene field effect immunosensor for detection of lung tumor markers. Talanta 2024; 278:126498. [PMID: 38959668 DOI: 10.1016/j.talanta.2024.126498] [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: 03/14/2024] [Revised: 06/26/2024] [Accepted: 06/29/2024] [Indexed: 07/05/2024]
Abstract
Lung cancer is the main cancer that endangers human life worldwide, with the highest mortality rate. The detection of lung tumor markers is of great significance for the early diagnosis and subsequent treatment of lung cancer. In this study, a vertical graphene field effect transistor (VGFET) immunosensor based on graphene/C60 heterojunction was created to offer quantitative detections for the lung tumor markers carcinoembryonic antigen (CEA), cytokeratin 19 fragment (Cyfra21-1), and neuron-specific enolase (NSE). The experimental results showed that the sensitive range for standard antigen is between 1 pg/ml to 100 ng/ml, with a limit of detection (LOD) of 5.6 amol/ml for CEA, 33.3 amol/ml for Cyfra 21-1 and 12.8 amol/ml for NSE (1 pg/ml for all). The detection accuracy for these tumor markers was compared with the clinically used method for clinical patients on serum samples. Results are highly consistent with clinically used immunoassay in its efficient diagnosis concentration range. Subsequently, the mesoporous silica nanospheres (MSNs) with an average size of 90 nm were surface modified with glutaraldehyde, and a second antibody was assembled on MSNs, which fixes nanospheres on the antigen and amplified the field effect. The LODs for three markers are 100 fg/ml (0.56 amol/ml for CEA) under optimal circumstances of detection. This result indicates that specific binding to MSNs enhances local field effects and can achieve higher sensing efficiency for tumor marker detection at extremely low concentrations, providing effective assistance for the early diagnosis of lung cancer.
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Affiliation(s)
- Ruifang Liu
- State Key Laboratory of Digital Medical Engineering, School of Biology and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Hang Song
- State Key Laboratory of Digital Medical Engineering, School of Biology and Medical Engineering, Southeast University, Nanjing, 210096, China; Institute of Sports and Health, Southeast University, Nanjing, Jiangsu, 210000, China
| | - Hao Wu
- State Key Laboratory of Digital Medical Engineering, School of Biology and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhihao Yang
- State Key Laboratory of Digital Medical Engineering, School of Biology and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Surong Fang
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China
| | - Jing Zhu
- Department of Emergency, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China
| | - Long Ba
- State Key Laboratory of Digital Medical Engineering, School of Biology and Medical Engineering, Southeast University, Nanjing, 210096, China.
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Urban L, Novák Š, Čoma M, Dvořánková B, Lacina L, Šáchová J, Hradilová M, Svatoňová P, Kolář M, Strnad H, Březinová J, Smetana K, Gál P, Szabo P. Unravelling heterogeneous effects of cancer‑associated fibroblasts on poor prognosis markers in breast cancer EM‑G3 cell line: In vitro‑targeted treatment (anti‑IL-6, anti‑VEGF-A, anti‑MFGE8) based on transcriptomic profiling. Oncol Rep 2024; 51:3. [PMID: 37975220 PMCID: PMC10688412 DOI: 10.3892/or.2023.8662] [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: 06/27/2023] [Accepted: 09/29/2023] [Indexed: 11/19/2023] Open
Abstract
Breast cancer is the most frequently diagnosed cancer in women worldwide. Although dramatically increased survival rates of early diagnosed cases have been observed, late diagnosed patients and metastatic cancer may still be considered fatal. The present study's main focus was on cancer‑associated fibroblasts (CAFs) which is an active component of the tumor microenvironment (TME) regulating the breast cancer ecosystem. Transcriptomic profiling and analysis of CAFs isolated from breast cancer skin metastasis, cutaneous basal cell carcinoma, and squamous cell carcinoma unravelled major gene candidates such as IL6, VEGFA and MFGE8 that induced co‑expression of keratins‑8/‑14 in the EM‑G3 cell line derived from infiltrating ductal breast carcinoma. Western blot analysis of selected keratins (keratin‑8, ‑14, ‑18, ‑19) and epithelial‑mesenchymal transition‑associated markers (SLUG, SNAIL, ZEB1, E‑/N‑cadherin, vimentin) revealed specific responses pointing to certain heterogeneity of the studied CAF populations. Experimental in vitro treatment using neutralizing antibodies against IL-6, VEGF‑A and MFGE8 attenuated the modulatory effect of CAFs on EM‑G3 cells. The present study provided novel data in characterizing and understanding the interactions between CAFs and EM‑G3 cells in vitro. CAFs of different origins support the pro‑inflammatory microenvironment and influence the biology of breast cancer cells. This observation potentially holds significant interest for the development of novel, clinically relevant approaches targeting the TME in breast cancer. Furthermore, its implications extend beyond breast cancer and have the potential to impact a wide range of other cancer types.
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Affiliation(s)
- Lukáš Urban
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University in Košice, 040 11 Košice, Slovak Republic
- Department for Biomedical Research, East-Slovak Institute of Cardiovascular Diseases, Inc., 040 11 Košice, Slovak Republic
| | - Štepán Novák
- Institute of Anatomy, First Faculty of Medicine, Charles University, 128 00 Prague, Czech Republic
- Department of Otorhinolaryngology, Head and Neck Surgery, First Faculty of Medicine, Charles University and University Hospital Motol, 150 06 Prague, Czech Republic
| | - Matúš Čoma
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University in Košice, 040 11 Košice, Slovak Republic
- Department for Biomedical Research, East-Slovak Institute of Cardiovascular Diseases, Inc., 040 11 Košice, Slovak Republic
| | - Barbora Dvořánková
- Institute of Anatomy, First Faculty of Medicine, Charles University, 128 00 Prague, Czech Republic
- BIOCEV, Charles University, First Faculty of Medicine and Faculty of Sciences, 252 50 Vestec, Czech Republic
| | - Lukáš Lacina
- Institute of Anatomy, First Faculty of Medicine, Charles University, 128 00 Prague, Czech Republic
- BIOCEV, Charles University, First Faculty of Medicine and Faculty of Sciences, 252 50 Vestec, Czech Republic
- Department of Dermatovenereology, General University Hospital in Prague and First Faculty of Medicine, Charles University, 128 00 Prague, Czech Republic
| | - Jana Šáchová
- Laboratory of Genomics and Bioinformatics, Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Miluše Hradilová
- Laboratory of Genomics and Bioinformatics, Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Petra Svatoňová
- Laboratory of Genomics and Bioinformatics, Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Michal Kolář
- Laboratory of Genomics and Bioinformatics, Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Hynek Strnad
- Laboratory of Genomics and Bioinformatics, Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Jana Březinová
- Cytogenetic Laboratory, Institute of Hematology and Blood Transfusion, 128 00 Prague, Czech Republic
| | - Karel Smetana
- Institute of Anatomy, First Faculty of Medicine, Charles University, 128 00 Prague, Czech Republic
- BIOCEV, Charles University, First Faculty of Medicine and Faculty of Sciences, 252 50 Vestec, Czech Republic
| | - Peter Gál
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University in Košice, 040 11 Košice, Slovak Republic
- Department for Biomedical Research, East-Slovak Institute of Cardiovascular Diseases, Inc., 040 11 Košice, Slovak Republic
- Department of Pharmacognosy, Faculty of Pharmacy, Comenius University in Bratislava, 832 32 Bratislava, Slovak Republic
- Prague Burn Center, Third Faculty of Medicine, Charles University, 100 34 Prague, Czech Republic
- Insitute of Neurobiology, Biomedical Research Center of the Slovak Academy of Sciences, 040 01 Košice, Slovak Republic
| | - Pavol Szabo
- Institute of Anatomy, First Faculty of Medicine, Charles University, 128 00 Prague, Czech Republic
- BIOCEV, Charles University, First Faculty of Medicine and Faculty of Sciences, 252 50 Vestec, Czech Republic
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3
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Sahoo G, Samal D, Khandayataray P, Murthy MK. A Review on Caspases: Key Regulators of Biological Activities and Apoptosis. Mol Neurobiol 2023; 60:5805-5837. [PMID: 37349620 DOI: 10.1007/s12035-023-03433-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 06/06/2023] [Indexed: 06/24/2023]
Abstract
Caspases are proteolytic enzymes that belong to the cysteine protease family and play a crucial role in homeostasis and programmed cell death. Caspases have been broadly classified by their known roles in apoptosis (caspase-3, caspase-6, caspase-7, caspase-8, and caspase-9 in mammals) and in inflammation (caspase-1, caspase-4, caspase-5, and caspase-12 in humans, and caspase-1, caspase-11, and caspase-12 in mice). Caspases involved in apoptosis have been subclassified by their mechanism of action as either initiator caspases (caspase-8 and caspase-9) or executioner caspases (caspase-3, caspase-6, and caspase-7). Caspases that participate in apoptosis are inhibited by proteins known as inhibitors of apoptosis (IAPs). In addition to apoptosis, caspases play a role in necroptosis, pyroptosis, and autophagy, which are non-apoptotic cell death processes. Dysregulation of caspases features prominently in many human diseases, including cancer, autoimmunity, and neurodegenerative disorders, and increasing evidence shows that altering caspase activity can confer therapeutic benefits. This review covers the different types of caspases, their functions, and their physiological and biological activities and roles in different organisms.
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Affiliation(s)
- Gayatri Sahoo
- Department of Zoology, PSSJ College, Banarpal, 759128, Odisha, India
| | - Dibyaranjan Samal
- Department of Biotechnology, Academy of Management and Information Technology (AMIT, affiliated to Utkal University), Khurda, 752057, Odisha, India
| | | | - Meesala Krishna Murthy
- Department of Allied Health Sciences, Chitkara School of Health Sciences, Chitkara University, Rajpura, Punjab, 140401, India.
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Keyser BM. Cytotoxicity, oxidative stress, and inflammatory response of smokeless tobacco extracts and cytotoxicity of combustible cigarette whole smoke in a 3D oral organotypic buccal cell model. Toxicol Mech Methods 2022; 32:352-361. [PMID: 34923904 DOI: 10.1080/15376516.2021.2009949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 11/18/2021] [Accepted: 11/18/2021] [Indexed: 10/19/2022]
Abstract
Oral disease is frequently associated with viral and environmental exposures and oral hygiene. The use of tobacco is a risk factor in the development of oral disease. Cytotoxicity, inflammatory response, and oxidative stress have been reported to have a role in the development of oral disease. These three endpoints were evaluated in a 3D human oral buccal model, EpiOral™, following exposure to CORESTA reference smokeless tobacco products (CRPs) and cigarette whole smoke. CRPs for Swedish style snus (CRP1), moist snuff (CRP2), and dry snuff (CRP3) were each extracted in complete artificial saliva (CAS) with a ratio of 300 mg CRP to 1 mL of CAS. Each of the CRP extracts (15-300 mg/ml) were applied to the apical side of a 3D organotypic buccal cell model for 24 or 48 h continuously, then cytotoxicity (LDH), oxidative stress (8-isoprostane), and inflammatory response (IP10, IL-1α, and IL-8) were measured. Experiments with 3R4F cigarettes were conducted by exposing the buccal tissues to whole smoke for a maximum of 2.5 h. Cytotoxicity (MTT) was measured 24 h post-exposure. Exposure of buccal tissues to whole smoke from a cigarette induced a dose-dependent cytotoxic response. In contrast, the CRP extracts elicited minimal cytotoxicity (<15%) when compared to CAS (vehicle control), but time- and dose-dependent effects on oxidative stress and inflammatory response were observed. Collectively, these data demonstrate that a 3D organotypic buccal human model may be used to assess biological mechanisms (MOAs) involved in the development of oral disease following exposure to smokeless tobacco products and may be applicable for differentiation between tobacco product categories.
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Affiliation(s)
- Brian M Keyser
- Scientific & Regulatory Affairs, RAI Services Company, Winston-Salem, NC, USA
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5
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Saeed M, Kausar MA, Singh R, Siddiqui AJ, Akhter A. The Role of Glyoxalase in Glycation and Carbonyl Stress Induced Metabolic Disorders. Curr Protein Pept Sci 2021; 21:846-859. [PMID: 32368974 DOI: 10.2174/1389203721666200505101734] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/09/2019] [Accepted: 12/08/2019] [Indexed: 12/14/2022]
Abstract
Glycation refers to the covalent binding of sugar molecules to macromolecules, such as DNA, proteins, and lipids in a non-enzymatic reaction, resulting in the formation of irreversibly bound products known as advanced glycation end products (AGEs). AGEs are synthesized in high amounts both in pathological conditions, such as diabetes and under physiological conditions resulting in aging. The body's anti-glycation defense mechanisms play a critical role in removing glycated products. However, if this defense system fails, AGEs start accumulating, which results in pathological conditions. Studies have been shown that increased accumulation of AGEs acts as key mediators in multiple diseases, such as diabetes, obesity, arthritis, cancer, atherosclerosis, decreased skin elasticity, male erectile dysfunction, pulmonary fibrosis, aging, and Alzheimer's disease. Furthermore, glycation of nucleotides, proteins, and phospholipids by α-oxoaldehyde metabolites, such as glyoxal (GO) and methylglyoxal (MGO), causes potential damage to the genome, proteome, and lipidome. Glyoxalase-1 (GLO-1) acts as a part of the anti-glycation defense system by carrying out detoxification of GO and MGO. It has been demonstrated that GLO-1 protects dicarbonyl modifications of the proteome and lipidome, thereby impeding the cell signaling and affecting age-related diseases. Its relationship with detoxification and anti-glycation defense is well established. Glycation of proteins by MGO and GO results in protein misfolding, thereby affecting their structure and function. These findings provide evidence for the rationale that the functional modulation of the GLO pathway could be used as a potential therapeutic target. In the present review, we summarized the newly emerged literature on the GLO pathway, including enzymes regulating the process. In addition, we described small bioactive molecules with the potential to modulate the GLO pathway, thereby providing a basis for the development of new treatment strategies against age-related complications.
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Affiliation(s)
- Mohd Saeed
- Department of Biology, College of Sciences, University of Hail, Hail, Saudi Arabia
| | - Mohd Adnan Kausar
- Department of Biochemistry, College of Medicine, University of Hail, Hail, Saudi Arabia
| | - Rajeev Singh
- Department of Environmental Studies, Sataywati College, Delhi University, Delhi, India
| | - Arif J Siddiqui
- Department of Biology, College of Sciences, University of Hail, Hail, Saudi Arabia
| | - Asma Akhter
- Department of Biosciences, Integral University, Lucknow, Uttar Pradesh 226026, India
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6
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Dysregulation of glutaminase and glutamine synthetase in cancer. Cancer Lett 2019; 467:29-39. [DOI: 10.1016/j.canlet.2019.09.011] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/11/2019] [Accepted: 09/19/2019] [Indexed: 12/20/2022]
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7
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Wang W, Xu X, Wang W, Shao W, Li L, Yin W, Xiu L, Mo M, Zhao J, He Q, He J. The expression and clinical significance of CLIC1 and HSP27 in lung adenocarcinoma. Tumour Biol 2011; 32:1199-208. [PMID: 21858536 DOI: 10.1007/s13277-011-0223-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2011] [Accepted: 08/08/2011] [Indexed: 02/07/2023] Open
Abstract
The purpose of this research was to study the roles of chloride intracellular channel protein 1 (CLIC1) and heat shock protein 27 (HSP27) in the clinical pathology of lung adenocarcinoma and to explore whether the expression of CLIC1 and HSP27 can be used as independent factors for the prediction of recurrence and prognosis after radical resection of lung adenocarcinoma. One hundred and three paraffin sections of lung adenocarcinoma tissues were collected, and the expression of CLIC1 and HSP27 was detected in these tumors using immunohistochemistry. The correlation of the expression of these two proteins with clinicopathological parameters and prognosis was statistically analyzed. In the 103 samples, the expression of HSP27 and CLIC1 was strongly positive in 61 (59.2%) and 49 cases (47.6%), respectively. Statistical analysis showed that the expression level of HSP27 did not significantly correlate with the patient's age, sex, degree of tumor differentiation, T staging of tumors, and TNM staging of tumors (p > 0.05), whereas the expression of CLIC1 did significantly correlate with T staging of tumors (p = 0.029). Univariate analysis indicated that the patient's ECOG score, T staging, N staging, TNM staging, and CLIC1 expression correlated with prognosis (p = 0.031, 0.001, 0.011, 0.013, and <0.001, respectively). Multivariate statistical analysis showed that age, T staging, and CLIC1 expression were independent associated factors for predicting the 5-year survival rate of patients (p = 0.026, 0.004, and <0.001, respectively). Age, T staging, and CLIC1 expression significantly correlated with the overall survival of post-operative lung adenocarcinoma patients. CLIC1 may be closely associated with the occurrence and development of lung adenocarcinoma and may be used as an effective marker for predicting the prognosis of this disease.
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Affiliation(s)
- Wei Wang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Guangzhou Medical College, Guangzhou, People's Republic of China
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Jia M, Souchelnytskyi N, Hellman U, O'Hare M, Jat PS, Souchelnytskyi S. Proteome profiling of immortalization-to-senescence transition of human breast epithelial cells identified MAP2K3 as a senescence-promoting protein which is downregulated in human breast cancer. Proteomics Clin Appl 2011; 4:816-28. [PMID: 21137025 DOI: 10.1002/prca.201000006] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE immortalization is one of the first changes in cells undergoing carcinogenic transformation. Proteome profiling of the immortalization-senescence transition is expected to provide insights into the molecular mechanisms of early tumorigenesis. EXPERIMENTAL DESIGN 2-DE and MALDI-MS were used to identify proteins in primary human breast epithelial cells, relevant to the immortalization-senescence transition. Cell and molecular biology and immunohistochemistry were used to validate involvement of mitogen-activated protein kinase kinase 3 (MAP2K3) in the immortalization-senescence transition. RESULTS we identified 71 proteins whose expression changed upon induction of senescence. The identified proteins include regulators of cell growth, death, cell assembly and organization. Analysis of the network formed by the identified proteins suggested that the immortalization-to-senescence transition could affect regulators of the cell cycle, protein synthesis, transport, post-translational modifications, DNA recombination and repair, and lipid and amino acid metabolism. We observed that MAP2K3 was downregulated in immortal human breast epithelial cells and that upregulation of MAP2K3 expression promoted cell senescence. Decreased expression of MAP2K3 was observed in human breast infiltrating ductal carcinomas, as compared to non-cancerous human breast tissues. CONCLUSION AND CLINICAL RELEVANCE we described a proteome profile of the immortalization-to-senescence transition for human breast epithelial cells, and identified MAP2K3 as a protein that promotes senescence in these cells.
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Affiliation(s)
- Min Jia
- Karolinska Biomics Center, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
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Rabbani N, Thornalley PJ. Glyoxalase in diabetes, obesity and related disorders. Semin Cell Dev Biol 2011; 22:309-17. [PMID: 21335095 DOI: 10.1016/j.semcdb.2011.02.015] [Citation(s) in RCA: 185] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 02/04/2011] [Accepted: 02/10/2011] [Indexed: 01/21/2023]
Abstract
Diabetes was the first disease state where evidence emerged for increased formation of methylglyoxal. Metabolism of methylglyoxal by the glyoxalase system has been linked to the development of vascular complications of diabetes - nephropathy, retinopathy, neuropathy and cardiovascular disease. Increased formation of methylglyoxal in hyperglycaemia associated with diabetes and down regulation of glyoxalase 1 by inflammatory signalling in vascular cells leads to a marked increased modification of proteins by methylglyoxal to form advanced glycation endproducts at the sites of vascular complications. Hotspot protein targets of methylglyoxal that suffer functional impairment - the dicarbonyl proteome - likely play a key role in the mechanisms underlying the development of vascular complications in diabetes: particularly modification of integrin binding sites in extracellular matrix proteins leading to endothelial cell shedding and anoikis, modification of mitochondrial proteins and increased formation of reaction oxygen species, and modification of apolipoprotein B100 of low density lipoprotein leading to its increased atherogenicity. Some current therapeutic agents counter partially dysfunctional metabolism of methylglyoxal by the glyoxalase system in diabetes - including the recent development of high dose thiamine therapy for early stage diabetic nephropathy. Further pharmacologic strategies are required to overcome the down regulation of glyoxalase1 in diabetes. The glyoxalase system is likely to be a continuing and future focus for research on clinical biomarkers and therapeutic development for respectively assessment of metabolic control and prevention of vascular complications in diabetes and obesity.
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Affiliation(s)
- Naila Rabbani
- Clinical Sciences Research Institute, Warwick Medical School, University of Warwick, University Hospital, Coventry, UK.
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DeAngelis JT, Li Y, Mitchell N, Wilson L, Kim H, Tollefsbol TO. 2D difference gel electrophoresis analysis of different time points during the course of neoplastic transformation of human mammary epithelial cells. J Proteome Res 2010; 10:447-58. [PMID: 21105747 DOI: 10.1021/pr100533k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cell culture models of oncogenesis that use cellular reprogramming to generate a neoplastic cell from a normal cell provide one of the few opportunities to study the early stages of breast cancer development. Human mammary epithelial cells (HMECs) were induced to undergo a neoplastic transformation using defined genetic elements to generate transformed HMECs (THMECs). To identify proteins that displayed significantly different levels of abundance at three consecutive time points in oncogenesis over an 80 day period, protein extracts were analyzed by two-dimensional difference gel electrophoresis (2D-DIGE). Nine proteins were found to be significantly different in abundance: keratin 1, keratin 7, heat shock protein 4A-like, t-complex protein 1, stathmin, gelsolin, FK506 binding protein 5, ribosomal protein P0, and maspin. Keratin 7 and maspin displayed a linear down-regulation over 80 days. All of these proteins have been shown to be involved in the maintenance of a metastatic state including cytoskeletal modifications and motility. We conclude that, following neoplastic induction, THMECs display an early and progressive increase in metastatic potential. Further investigations into the function and regulatory mechanisms of these proteins will provide an unparalleled understanding of the initial states through which a breast cancer cell transitions following acquisition of the genetic abnormalities required for oncogenesis.
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Affiliation(s)
- J Tyson DeAngelis
- Department of Biology, UAB Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, Alabama 35294-1170, USA
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Balasubramani M, Nakao C, Uechi GT, Cardamone J, Kamath K, Leslie KL, Balachandran R, Wilson L, Day BW, Jordan MA. Characterization and detection of cellular and proteomic alterations in stable stathmin-overexpressing, taxol-resistant BT549 breast cancer cells using offgel IEF/PAGE difference gel electrophoresis. Mutat Res 2010; 722:154-64. [PMID: 20816848 DOI: 10.1016/j.mrgentox.2010.08.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Accepted: 08/25/2010] [Indexed: 12/15/2022]
Abstract
Stathmin/oncoprotein 18, a protein that regulates microtubule dynamics, is highly expressed in a number of tumors including leukemia, lymphoma, neuroblastoma, breast, ovarian, and prostate cancers. High stathmin levels have been associated with the development of resistance to the widely used anti-cancer drug taxol ((®)Taxol, paclitaxel). The mechanisms of stathmin-mediated taxol resistance are not well-understood at the molecular level. To better understand the role of stathmin in taxol resistance, we stably overexpressed stathmin twofold in BT549 human breast cancer cells and characterized several cell processes involved in the mechanism of action of taxol. After stable overexpression of stathmin, neither the cell doubling time nor the mitotic index was altered and the microtubule polymer mass was reduced only modestly (by 18%). Unexpectedly, microtubule dynamicity was reduced by 29% after stathmin overexpression, resulting primarily from reduction in the catastrophe frequency. Sensitivity to taxol was reduced significantly (by 44%) in a clonogenic assay, and stathmin appeared to protect the cells from the spindle-damaging effects of taxol. The results suggest that in the stably stathmin-overexpressing clones, compensatory gene expression occurred that resulted in normal rates of cell proliferation and prevented the increase in catastrophe frequency expected in response to stathmin. Stathmin overexpression protected the cells from taxol-induced abnormal mitoses, and thus induced taxol resistance. Using offgel IEF/PAGE difference gel electrophoresis, we identified a number of proteins whose expression is reduced in the taxol-resistant stathmin-overexpressing cell lines, including proteins involved in the cytoskeleton and cell structure, the stress response, protein folding, glycolysis, and catalysis.
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Mladkova J, Sanda M, Matouskova E, Selicharova I. Phenotyping breast cancer cell lines EM-G3, HCC1937, MCF7 and MDA-MB-231 using 2-D electrophoresis and affinity chromatography for glutathione-binding proteins. BMC Cancer 2010; 10:449. [PMID: 20731849 PMCID: PMC2933630 DOI: 10.1186/1471-2407-10-449] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Accepted: 08/23/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Transformed phenotypes are common to cell lines derived from various cancers. Proteome profiling is a valuable tool that may reveal uncharacteristic cell phenotypes in transformed cells. Changes in expression of glutathione S-transferases (GSTs) and other proteins interacting with glutathione (GSH) in model cell lines could be of particular interest. METHODS We compared the phenotypes of breast cell lines EM-G3, HCC1937, MCF7 and MDA-MB-231 using 2-D electrophoresis (2-DE). We further separated GSH-binding proteins from the cell lines using affinity chromatography with GSH-Sepharose 4B, performed 2-DE analysis and identified the main protein spots. RESULTS Correlation coefficients among 2-DE gels from the cell lines were lower than 0.65, pointing to dissimilarity among the cell lines. Differences in primary constituents of the cytoskeleton were shown by the 2-D protein maps and western blots. The spot patterns in gels of GSH-binding fractions from primary carcinoma-derived cell lines HCC1937 and EM-G3 were similar to each other, and they differed from the spot patterns of cell lines MCF7 and MDA-MB-231 that were derived from pleural effusions of metastatic mammary carcinoma patients. Major differences in the expression of GST P1-1 and carbonyl reductase [NADPH] 1 were observed among the cell lines, indicating differential abilities of the cell lines to metabolize xenobiotics. CONCLUSIONS Our results confirmed the applicability of targeted affinity chromatography to proteome profiling and allowed us to characterize the phenotypes of four breast cancer cell lines.
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Affiliation(s)
- Jana Mladkova
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic vvi, Prague, Czech Republic
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Johnson MD, Schilz J, Djordjevic MV, Rice JR, Shields PG. Evaluation of in vitro assays for assessing the toxicity of cigarette smoke and smokeless tobacco. Cancer Epidemiol Biomarkers Prev 2009; 18:3263-304. [PMID: 19959677 PMCID: PMC2789344 DOI: 10.1158/1055-9965.epi-09-0965] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND In vitro toxicology studies of tobacco and tobacco smoke have been used to understand why tobacco use causes cancer and to assess the toxicologic impact of tobacco product design changes. The need for toxicology studies has been heightened given the Food and Drug Administration's newly granted authority over tobacco products for mandating tobacco product performance standards and evaluate manufacturers' health claims about modified tobacco products. The goal of this review is to critically evaluate in vitro toxicology methods related to cancer for assessing tobacco products and to identify related research gaps. METHODS PubMed database searches were used to identify tobacco-related in vitro toxicology studies published since 1980. Articles published before 1980 with high relevance also were identified. The data were compiled to examine (a) the goals of the study, (b) the methods for collecting test substances, (c) experimental designs, (d) toxicologic end points, and (e) relevance to cancer risk. RESULTS A variety of in vitro assays are available to assess tobacco smoke that address different modes of action, mostly using non-human cell models. However, smokeless tobacco products perform poorly in these assays. Although reliable as a screening tool for qualitative assessments, the available in vitro assays have been poorly validated for quantitative comparisons of different tobacco products. Assay batteries have not been developed, although they exist for nontobacco assessments. Extrapolating data from in vitro studies to human risks remains hypothetical. CONCLUSIONS In vitro toxicology methods are useful for screening toxicity, but better methods are needed for today's context of regulation and evaluation of health claims.
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Affiliation(s)
- Michael D Johnson
- Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC 20057-1465, USA
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14
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Veselý P, Rösel D, Panková D, Tolde O, Blase C, Matousková E, Folk P, Brábek J, Bereiter-Hahn J. Confocal microscopy reveals Myzitiras and Vthela morphotypes as new signatures of malignancy progression. SCANNING 2009; 31:102-106. [PMID: 19444860 DOI: 10.1002/sca.20146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
G3S1 cells are a new line derived from EM-G3 breast cancer cells by chronic nutritional stress and treatments with 12-O-tetradecanoylphorbol-13-acetate. These cells are capable of growing in standard medium. G3S1 cells exhibited elevated invasiveness in Matrigel invasion chambers as compared with parental EM-G3 cells. Elevated invasiveness of G3S1 cells was accompanied by higher incidence of myzitiras morphotype (sucker-like) and newly observed vthela morphotype (leech-like) both inducible in Hanks' Balanced Salt Solution test. Time-lapse phase contrast microscopy showed a capacity of G3S1 cells to form lobopodial protrusions already 20 min after seeding on gelatin. These protrusions could make contact with the dish and possibly produce the vthela shape. The possible relationship of mysitiras and vthela morphotypes to an increase in malignant potential marked by enhanced invasiveness was thus indicated.
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Affiliation(s)
- Pavel Veselý
- Institute of Molecular Genetics AS, Prague, Czech Republic
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15
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Bhaskaran N, Lin KW, Gautier A, Woksepp H, Hellman U, Souchelnytskyi S. Comparative proteome profiling of MCF10A and 184A1 human breast epithelial cells emphasized involvement of CDK4 and cyclin D3 in cell proliferation. Proteomics Clin Appl 2008; 3:68-77. [DOI: 10.1002/prca.200800045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2008] [Indexed: 01/31/2023]
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16
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Vydra J, Selicharová I, Smutná K, Šanda M, Matoušková E, Buršíková E, Prchalová M, Velenská Z, Coufal D, Jiráček J. Two-dimensional electrophoretic comparison of metastatic and non-metastatic human breast tumors using in vitro cultured epithelial cells derived from the cancer tissues. BMC Cancer 2008; 8:107. [PMID: 18416831 PMCID: PMC2377273 DOI: 10.1186/1471-2407-8-107] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2008] [Accepted: 04/16/2008] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Breast carcinomas represent a heterogeneous group of tumors diverse in behavior, outcome, and response to therapy. Identification of proteins resembling the tumor biology can improve the diagnosis, prediction, treatment selection, and targeting of therapy. Since the beginning of the post-genomic era, the focus of molecular biology gradually moved from genomes to proteins and proteomes and to their functionality. Proteomics can potentially capture dynamic changes in protein expression integrating both genetic and epigenetic influences. METHODS We prepared primary cultures of epithelial cells from 23 breast cancer tissue samples and performed comparative proteomic analysis. Seven patients developed distant metastases within three-year follow-up. These samples were included into a metastase-positive group, the others formed a metastase-negative group. Two-dimensional electrophoretical (2-DE) gels in pH range 4-7 were prepared. Spot densities in 2-DE protein maps were subjected to statistical analyses (R/maanova package) and data-mining analysis (GUHA). For identification of proteins in selected spots, liquid chromatography-tandem mass spectrometry (LC-MS/MS) was employed. RESULTS Three protein spots were significantly altered between the metastatic and non-metastatic groups. The correlations were proven at the 0.05 significance level. Nucleophosmin was increased in the group with metastases. The levels of 2,3-trans-enoyl-CoA isomerase and glutathione peroxidase 1 were decreased. CONCLUSION We have performed an extensive proteomic study of mammary epithelial cells from breast cancer patients. We have found differentially expressed proteins between the samples from metastase-positive and metastase-negative patient groups.
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Affiliation(s)
- Jan Vydra
- Department of Oncology, 1st Faculty of Medicine, Charles University Prague, Czech Republic
| | - Irena Selicharová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Kateřina Smutná
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Miloslav Šanda
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Eva Matoušková
- Institute of Biochemistry and Experimental Oncology, 1st Faculty of Medicine, Charles University Prague, Czech Republic
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- Prague Burn Centre, 3rd Faculty of Medicine, Charles University Prague, Czech Republic
| | - Eva Buršíková
- Institute of Biochemistry and Experimental Oncology, 1st Faculty of Medicine, Charles University Prague, Czech Republic
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- Prague Burn Centre, 3rd Faculty of Medicine, Charles University Prague, Czech Republic
| | - Markéta Prchalová
- Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
- Prague Burn Centre, 3rd Faculty of Medicine, Charles University Prague, Czech Republic
| | - Zuzana Velenská
- Institute of Pathology 1st Faculty of Medicine, Charles University Prague and General Teaching Hospital, Prague, Czech Republic
| | - David Coufal
- Institute of Computer Science, Academy of Sciences of the Czech Republic, Prague, Czech Republic
| | - Jiří Jiráček
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic
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17
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Denecker G, Ovaere P, Vandenabeele P, Declercq W. Caspase-14 reveals its secrets. J Cell Biol 2008; 180:451-8. [PMID: 18250198 PMCID: PMC2234247 DOI: 10.1083/jcb.200709098] [Citation(s) in RCA: 146] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2007] [Accepted: 12/02/2007] [Indexed: 12/13/2022] Open
Abstract
Caspase-14 is a unique member of the evolutionarily conserved family of cysteinyl aspartate-specific proteinases, which are mainly involved in inflammation and apoptosis. However, recent evidence also implicates these proteases in proliferation and differentiation. Although most caspases are ubiquitously expressed, caspase-14 expression is confined mainly to cornifying epithelia, such as the skin. Moreover, caspase-14 activation correlates with cornification, indicating that it plays a role in terminal keratinocyte differentiation. The determination of in vitro conditions for caspase-14 activity paved the way to identifying its substrates. The recent development of caspase-14-deficient mice underscored its importance in the correct degradation of (pro)filaggrin and in the formation of the epidermal barrier that protects against dehydration and UVB radiation. Here, we review the current knowledge on caspase-14 in skin homeostasis and disease.
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Affiliation(s)
- Geertrui Denecker
- Department for Molecular Biomedical Research, Flanders Institute for Biotechnology (VIB), 9052 Ghent, Belgium
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18
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Thornalley PJ. Protein and nucleotide damage by glyoxal and methylglyoxal in physiological systems--role in ageing and disease. DRUG METABOLISM AND DRUG INTERACTIONS 2008; 23:125-50. [PMID: 18533367 PMCID: PMC2649415 DOI: 10.1515/dmdi.2008.23.1-2.125] [Citation(s) in RCA: 336] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Glycation of proteins, nucleotides and basic phospholipids by glyoxal and methylglyoxal--physiological substrates of glyoxalase 1--is potentially damaging to the proteome, genome and lipidome. Glyoxalase 1 suppresses glycation by these alpha-oxoaldehyde metabolites and thereby represents part of the enzymatic defence against glycation. Albert Szent-Györgyi pioneered and struggled to understand the physiological function of methylglyoxal and the glyoxalase system. We now appreciate that glyoxalase 1 protects against dicarbonyl modifications of the proteome, genome and lipome. Latest research suggests there are functional modifications of this process--implying a role in cell signalling, ageing and disease.
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Affiliation(s)
- Paul J Thornalley
- Protein Damage and Systems Biology Research Group, Clinical Sciences Research Institute, Warwick Medical School, University of Warwick, University Hospital, Coventry, UK.
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19
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Maixnerová J, Hlavácek J, Blokesová D, Kowalczyk W, Elbert T, Sanda M, Blechová M, Zelezná B, Slaninová J, Maletínská L. Structure-activity relationship of CART (cocaine- and amphetamine-regulated transcript) peptide fragments. Peptides 2007; 28:1945-53. [PMID: 17766010 DOI: 10.1016/j.peptides.2007.07.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Revised: 07/20/2007] [Accepted: 07/20/2007] [Indexed: 11/19/2022]
Abstract
CART (cocaine- and amphetamine-regulated transcript) peptides are neuropeptides abundant in the central nervous system and periphery found to be involved in the regulation of food intake behavior and other physiological processes. Recently, we reported specific binding of (125)I-CART(61-102) to the rat adrenal pheochromocytoma cell line PC12, both intact cells and cell membranes. In this study, several fragments of CART(61-102) corresponding to its structural loops were synthesized and tested for their potency in binding experiments using PC12 intact cells and cell membranes and in feeding test with fasted mice. From all shorter peptides tested, only CART(74-86) and CART(62-86) containing disulfide bridges kept partial binding potency of the original molecule with K(i) in 10(-5) and 10(-4)M range. However, these fragments were not able to inhibit food intake after their central administration up to a dose of 4 nmol/mouse. The results showed that a compact structure containing three disulfide bridges is necessary for preservation of full biological activity of CART peptides.
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Affiliation(s)
- Jana Maixnerová
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
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