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Rajaratnam V, Islam MM, Kub EF, Rajaratnam S, Kim KB, Rahman MT, Rashid F, Benko AM, Cook JM, Arnold LA, Mirza SP. Development and validation of an LC-MS/MS method for the determination of ARN14988, an acid ceramidase inhibitor, and its application to a pharmacokinetic study in a mouse model. Biomed Chromatogr 2024; 38:e5754. [PMID: 37750452 DOI: 10.1002/bmc.5754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 08/31/2023] [Accepted: 09/07/2023] [Indexed: 09/27/2023]
Abstract
Despite aggressive treatment approaches, the overall survival of glioblastoma (GBM) patients remained poor with a strong need for more effective chemotherapeutic agents. A previous study has shown that ARN14988 is more cytotoxic to GBM cells compared to US Food and Drug Administration-approved temozolomide. This finding makes ARN14988 a desirable candidate for further pharmacological assessment. Therefore, an efficient analytical method is needed to quantify ARN14988. Herein, we have developed and validated sample preparation and LC-MS/MS triple quadrupole (QQQ) method for quantification of ARN14988 in mouse plasma. In this method, the liquid-liquid extraction of ARN14988 from mouse plasma was performed using 5% ethyl acetate in hexane. The chromatographic separation was achieved using a C18 -column with mobile phases of 10 mm ammonium acetate (pH 5) and 0.1% formic acid in methanol, within a runtime of 10 min. The monitored transitions were m/z 391.20 → m/z 147.00 for ARN14988, and m/z 455.30 → m/z 165.00 for verapamil (internal standard) in positive electrospray ionization. The developed method for ARN14988 showed linearity over the range of 10-5,000 ng/ml (r2 > 0.99). The selectivity, sensitivity, matrix effect, recovery, stability, inter-day and intraday accuracy and precision were determined using four quality control samples. This validated method was successfully applied to the pharmacokinetic study of ARN14988 in mice.
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Affiliation(s)
- Vilashini Rajaratnam
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | | | - Ethan F Kub
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | - Shaarwin Rajaratnam
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | - Kyu Bum Kim
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | - Md Toufiqur Rahman
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | - Farjana Rashid
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | - Anna M Benko
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | - James M Cook
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | - Leggy A Arnold
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
| | - Shama P Mirza
- Department of Chemistry & Biochemistry, University of Wisconsin-, Milwaukee, WI, USA
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2
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Islam MM, Mirza SP. Versatile use of Carmofur: A comprehensive review of its chemistry and pharmacology. Drug Dev Res 2022; 83:1505-1518. [PMID: 36031762 DOI: 10.1002/ddr.21984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 07/27/2022] [Accepted: 08/11/2022] [Indexed: 11/07/2022]
Abstract
Carmofur, 1-hexylcarbamoyl-5-fluorouracil (HCFU) is an antineoplastic drug, which has been in clinics in Japan since 1981 for the treatment of colorectal cancer. Subsequently, it was also introduced in China, Korea, and Finland. Besides colorectal cancer, it has also shown antitumor activity in other cancers such as breast, head and neck, pancreatic, gastrointestinal, and solid brain tumors. A prodrug of 5-fluorouracil (5-FU), carmofur has shown better gastrointestinal stability and superior antiproliferative activity compared to its active counterpart 5-FU. Recently, carmofur has gained attention as an acid ceramidase inhibitor and as a potential lead compound against several noncancerous diseases such as coronavirus disease 2019, Krabbe disease, acute lung injury, Parkinson's disease, dementia, childhood ependymoma etc. Carmofur has also been reported to have antifungal, and antimicrobial properties. Nevertheless, no comprehensive review is available on this drug. Herein, we summarized the chemistry, pharmacokinetics, and pharmacology of carmofur based on the literature published between January 1976 and March 2022 as identified from PubMed and Google Scholar search engines.
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Affiliation(s)
- Mohammad Mohiminul Islam
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Shama P Mirza
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
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Mian MY, Mondal P, Sharmin D, Pandey KP, Rashid F, Rezvanian S, Golani LK, Tiruveedhula VPB, Rajaratnam V, Mirza SP, Chan JD, Witkin JM, Cook JM. An efficient debromination technique using PMHS with a number of ligands containing different functional groups. ARKIVOC 2022. [DOI: 10.24820/ark.5550190.p011.712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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4
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Stetson LC, Ostrom QT, Schlatzer D, Liao P, Devine K, Waite K, Couce ME, Harris PLR, Kerstetter-Fogle A, Berens ME, Sloan AE, Islam MM, Rajaratnam V, Mirza SP, Chance MR, Barnholtz-Sloan JS. Proteins inform survival-based differences in patients with glioblastoma. Neurooncol Adv 2020; 2:vdaa039. [PMID: 32642694 PMCID: PMC7212893 DOI: 10.1093/noajnl/vdaa039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Background Improving the care of patients with glioblastoma (GB) requires accurate and reliable predictors of patient prognosis. Unfortunately, while protein markers are an effective readout of cellular function, proteomics has been underutilized in GB prognostic marker discovery. Methods For this study, GB patients were prospectively recruited and proteomics discovery using liquid chromatography–mass spectrometry analysis (LC-MS/MS) was performed for 27 patients including 13 short-term survivors (STS) (≤10 months) and 14 long-term survivors (LTS) (≥18 months). Results Proteomics discovery identified 11 941 peptides in 2495 unique proteins, with 469 proteins exhibiting significant dysregulation when comparing STS to LTS. We verified the differential abundance of 67 out of these 469 proteins in a small previously published independent dataset. Proteins involved in axon guidance were upregulated in STS compared to LTS, while those involved in p53 signaling were upregulated in LTS. We also assessed the correlation between LS MS/MS data with RNAseq data from the same discovery patients and found a low correlation between protein abundance and mRNA expression. Finally, using LC-MS/MS on a set of 18 samples from 6 patients, we quantified the intratumoral heterogeneity of more than 2256 proteins in the multisample dataset. Conclusions These proteomic datasets and noted protein variations present a beneficial resource for better predicting patient outcome and investigating potential therapeutic targets.
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Affiliation(s)
- L C Stetson
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Quinn T Ostrom
- Department of Medicine and Division of Hematology-Oncology, Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas, USA.,Department of Medicine, Section of Epidemiology and Population Sciences, Baylor College of Medicine, Houston, Texas, USA
| | - Daniela Schlatzer
- Center for Proteomics and Bioinformatics and Department of Nutrition, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Peter Liao
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Karen Devine
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Kristin Waite
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.,Department of Population and Quantitative Health Sciences and Cleveland Center for Health Outcomes Research (CCHOR), Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Marta E Couce
- Department of Pathology, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Peggy L R Harris
- Brain Tumor and Neuro-Oncology Center & Center of Excellence, Translational Neuro-Oncology, Department of Neurosurgery, Seidman Cancer Center, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Amber Kerstetter-Fogle
- Brain Tumor and Neuro-Oncology Center & Center of Excellence, Translational Neuro-Oncology, Department of Neurosurgery, Seidman Cancer Center, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Michael E Berens
- Translational Genomics Research Institute (TGen), Phoenix, Arizona, USA
| | - Andrew E Sloan
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.,Brain Tumor and Neuro-Oncology Center & Center of Excellence, Translational Neuro-Oncology, Department of Neurosurgery, Seidman Cancer Center, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Mohammad M Islam
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Vilashini Rajaratnam
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Shama P Mirza
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Mark R Chance
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.,Center for Proteomics and Bioinformatics and Department of Nutrition, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Jill S Barnholtz-Sloan
- Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.,Department of Population and Quantitative Health Sciences and Cleveland Center for Health Outcomes Research (CCHOR), Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
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Labbe BD, Hall CL, Kellogg SL, Chen Y, Koehn O, Pickrum AM, Mirza SP, Kristich CJ. Reciprocal Regulation of PASTA Kinase Signaling by Differential Modification. J Bacteriol 2019; 201:e00016-19. [PMID: 30858297 PMCID: PMC6482931 DOI: 10.1128/jb.00016-19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 03/01/2019] [Indexed: 12/20/2022] Open
Abstract
Transmembrane Ser/Thr kinases containing extracellular PASTA (penicillin-binding protein [PBP] and Ser/Thr-associated) domains are ubiquitous among Actinobacteria and Firmicutes species. Such PASTA kinases regulate critical bacterial processes, including antibiotic resistance, cell division, cell envelope homeostasis, and virulence, and are sometimes essential for viability. Previous studies of purified PASTA kinase fragments revealed they are capable of autophosphorylation in vitro, typically at multiple sites on the kinase domain. Autophosphorylation of a specific structural element of the kinase known as the activation loop is thought to enhance kinase activity in response to stimuli. However, the role of kinase phosphorylation at other sites is largely unknown. Moreover, the mechanisms by which PASTA kinases are deactivated once their stimulus has diminished are poorly understood. Enterococcus faecalis is a Gram-positive intestinal bacterium and a major antibiotic-resistant opportunistic pathogen. In E. faecalis, the PASTA kinase IreK drives intrinsic resistance to cell wall-active antimicrobials, and such antimicrobials trigger enhanced phosphorylation of IreK in vivo Here we identify multiple sites of phosphorylation on IreK and evaluate their function in vivo and in vitro While phosphorylation of the IreK activation loop is required for kinase activity, we found that phosphorylation at a site distinct from the activation loop reciprocally modulates IreK activity in vivo, leading to diminished activity (and diminished antimicrobial resistance). Moreover, this site is important for deactivation of IreK in vivo upon removal of an activating stimulus. Our results are consistent with a model in which phosphorylation of IreK at distinct sites reciprocally regulates IreK activity in vivo to promote adaptation to cell wall stresses.IMPORTANCE Transmembrane Ser/Thr kinases containing extracellular PASTA domains are ubiquitous among Actinobacteria and Firmicutes species and regulate critical processes, including antibiotic resistance, cell division, and cell envelope homeostasis. Previous studies of PASTA kinase fragments revealed autophosphorylation at multiple sites. However, the functional role of autophosphorylation and the relative impacts of phosphorylation at distinct sites are poorly understood. The PASTA kinase of Enterococcus faecalis, IreK, regulates intrinsic resistance to antimicrobials. Here we identify multiple sites of phosphorylation on IreK and show that modification of IreK at distinct sites reciprocally regulates IreK activity and antimicrobial resistance in vivo Thus, these results provide new insights into the mechanisms by which PASTA kinases can regulate critical physiological processes in a wide variety of bacterial species.
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Affiliation(s)
- Benjamin D Labbe
- Department of Microbiology and Immunology, Center for Infectious Disease Research, Medical College of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Cherisse L Hall
- Department of Microbiology and Immunology, Center for Infectious Disease Research, Medical College of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Stephanie L Kellogg
- Department of Microbiology and Immunology, Center for Infectious Disease Research, Medical College of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Yao Chen
- Department of Microbiology and Immunology, Center for Infectious Disease Research, Medical College of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Olivia Koehn
- Department of Microbiology and Immunology, Center for Infectious Disease Research, Medical College of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Adam M Pickrum
- Department of Microbiology and Immunology, Center for Infectious Disease Research, Medical College of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Shama P Mirza
- Department of Microbiology and Immunology, Center for Infectious Disease Research, Medical College of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
| | - Christopher J Kristich
- Department of Microbiology and Immunology, Center for Infectious Disease Research, Medical College of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
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Zhang Q, Lee SB, Chen X, Stevenson ME, Pan J, Xiong D, Zhou Y, Miller MS, Lubet RA, Wang Y, Mirza SP, You M. Optimized Bexarotene Aerosol Formulation Inhibits Major Subtypes of Lung Cancer in Mice. Nano Lett 2019; 19:2231-2242. [PMID: 30873838 DOI: 10.1021/acs.nanolett.8b04309] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bexarotene has shown inhibition of lung and mammary gland tumorigenesis in preclinical models and in clinical trials. The main side effects of orally administered bexarotene are hypertriglyceridemia and hypercholesterolemia. We previously demonstrated that aerosolized bexarotene administered by nasal inhalation has potent chemopreventive activity in a lung adenoma preclinical model without causing hypertriglyceridemia. To facilitate its future clinical translation, we modified the formula of the aerosolized bexarotene with a clinically relevant solvent system. This optimized aerosolized bexarotene formulation was tested against lung squamous cell carcinoma mouse model and lung adenocarcinoma mouse model and showed significant chemopreventive effect. This new formula did not cause visible signs of toxicity and did not increase plasma triglycerides or cholesterol. This aerosolized bexarotene was evenly distributed to the mouse lung parenchyma, and it modulated the microenvironment in vivo by increasing the tumor-infiltrating T cell population. RNA sequencing of the lung cancer cell lines demonstrated that multiple pathways are altered by bexarotene. For the first time, these studies demonstrate a new, clinically relevant aerosolized bexarotene formulation that exhibits preventive efficacy against the major subtypes of lung cancer. This approach could be a major advancement in lung cancer prevention for high risk populations, including former and present smokers.
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Affiliation(s)
| | | | | | - Morgan E Stevenson
- Department of Psychology , University of Wisconsin , Milwaukee , Wisconsin 53211 , United States
| | | | | | | | - Mark Steven Miller
- Division of Cancer Prevention , National Cancer Institute , Rockville , Maryland 20850 , United States
| | - Ronald A Lubet
- Division of Cancer Prevention , National Cancer Institute , Rockville , Maryland 20850 , United States
| | | | - Shama P Mirza
- Department of Chemistry and Biochemistry , University of Wisconsin , Milwaukee , Wisconsin 53211 , United States
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7
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Yacout SM, McIlwain KL, Mirza SP, Gaillard ER. Characterization of Retinal Pigment Epithelial Melanin and Degraded Synthetic Melanin Using Mass Spectrometry and In Vitro Biochemical Diagnostics. Photochem Photobiol 2018; 95:183-191. [PMID: 29752877 DOI: 10.1111/php.12934] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/24/2018] [Indexed: 12/14/2022]
Abstract
With increasing age, there is an observable loss of melanin in retinal pigment epithelial (RPE) cells. It is possible that degradation of the pigment contributes to the pathogenesis of retinal disease, as the cellular antioxidant material is depleted. Functionally, intact melanin maintains protective qualities, while oxidative degradation of melanin promotes reactive oxygen species (ROS) generation and formation of metabolic byproducts, such as melanolipofuscin. Understanding the structural and functional changes to RPE melanin with increasing age may contribute to a better understanding of disease progression and risk factors for conditions such as age-related macular degeneration (AMD). In this study, human donor RPE melanin is characterized using MALDI mass spectrometry to follow melanin degradation trends. In vitro models using ARPE-19 cells are used to assess photo-reactivity in repigmented cells. Significant protection against intracellular ROS produced by blue light is observed in calf melanin-pigmented cells versus unpigmented and black latex bead controls (P < 0.0001). UV-B exposure to aged human melanin-pigmented cells results in a significant increase in nitric oxide production versus control cells (P < 0.001). Peroxide-treated synthetic melanin is characterized to elucidate degradation products that may contribute to RPE cell damage.
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Affiliation(s)
- Sally M Yacout
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL
| | - Kelsey L McIlwain
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL
| | - Shama P Mirza
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, WI
| | - Elizabeth R Gaillard
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL.,Department of Biological Sciences, Northern Illinois University, DeKalb, IL
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8
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Doan NB, Nguyen HS, Alhajala HS, Jaber B, Al-Gizawiy MM, Ahn EYE, Mueller WM, Chitambar CR, Mirza SP, Schmainda KM. Identification of radiation responsive genes and transcriptome profiling via complete RNA sequencing in a stable radioresistant U87 glioblastoma model. Oncotarget 2018; 9:23532-23542. [PMID: 29805753 PMCID: PMC5955095 DOI: 10.18632/oncotarget.25247] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/08/2018] [Indexed: 12/19/2022] Open
Abstract
The absence of major progress in the treatment of glioblastoma (GBM) is partly attributable to our poor understanding of both GBM tumor biology and the acquirement of treatment resistance in recurrent GBMs. Recurrent GBMs are characterized by their resistance to radiation. In this study, we used an established stable U87 radioresistant GBM model and total RNA sequencing to shed light on global mRNA expression changes following irradiation. We identified many genes, the expressions of which were altered in our radioresistant GBM model, that have never before been reported to be associated with the development of radioresistant GBM and should be concertedly further investigated to understand their roles in radioresistance. These genes were enriched in various biological processes such as inflammatory response, cell migration, positive regulation of epithelial to mesenchymal transition, angiogenesis, apoptosis, positive regulation of T-cell migration, positive regulation of macrophage chemotaxis, T-cell antigen processing and presentation, and microglial cell activation involved in immune response genes. These findings furnish crucial information for elucidating the molecular mechanisms associated with radioresistance in GBM. Therapeutically, with the global alterations of multiple biological pathways observed in irradiated GBM cells, an effective GBM therapy may require a cocktail carrying multiple agents targeting multiple implicated pathways in order to have a chance at making a substantial impact on improving the overall GBM survival.
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Affiliation(s)
- Ninh B Doan
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Ha S Nguyen
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Hisham S Alhajala
- Department of Medicine, Hematology/Oncology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Basem Jaber
- Faculty of Medicine, University of Damascus, Damascus, Syria
| | - Mona M Al-Gizawiy
- Department of Radiology, Medical College of Wisconsin, Milwaukee, WI, USA
| | | | - Wade M Mueller
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Christopher R Chitambar
- Department of Medicine, Hematology/Oncology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Shama P Mirza
- Department of Chemistry and Biochemistry, University of Wisconsin, Milwaukee, WI, USA
| | - Kathleen M Schmainda
- Department of Radiology, Medical College of Wisconsin, Milwaukee, WI, USA.,Biophysics, Medical College of Wisconsin, Milwaukee, WI, USA
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Doan NB, Nguyen HS, Montoure A, Al-Gizawiy MM, Mueller WM, Kurpad S, Rand SD, Connelly JM, Chitambar CR, Schmainda KM, Mirza SP. Acid ceramidase is a novel drug target for pediatric brain tumors. Oncotarget 2018; 8:24753-24761. [PMID: 28445970 PMCID: PMC5421885 DOI: 10.18632/oncotarget.15800] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 02/15/2017] [Indexed: 11/29/2022] Open
Abstract
Pediatric brain tumors are the most common solid tumors in children and are also a leading culprit of cancer-related fatalities in children. Pediatric brain tumors remain hard to treat. In this study, we demonstrated that medulloblastoma, pediatric glioblastoma, and atypical teratoid rhabdoid tumors express significant levels of acid ceramidase, where levels are highest in the radioresistant tumors, suggesting that acid ceramidase may confer radioresistance. More importantly, we also showed that acid ceramidase inhibitors are highly effective at targeting these pediatric brain tumors with low IC50 values (4.6–50 μM). This data suggests acid ceramidase as a novel drug target for adjuvant pediatric brain tumor therapies. Of these acid ceramidase inhibitors, carmofur has seen clinical use in Japan since 1981 for colorectal cancers and is a promising drug to undergo further animal studies and subsequently a clinical trial as a treatment for pediatric patients with brain tumors.
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Affiliation(s)
- Ninh B Doan
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA.,Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Ha S Nguyen
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Andrew Montoure
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Mona M Al-Gizawiy
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Wade M Mueller
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Shekar Kurpad
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Scott D Rand
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Jennifer M Connelly
- Department of Neurology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | | | - Kathleen M Schmainda
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA.,Department of Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Shama P Mirza
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA.,Obstetrics and Gynecology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA.,Department of Chemistry and Biochemistry, University of Wisconsin, Milwaukee, Wisconsin, 53211, USA
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10
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Doan NB, Alhajala H, Al-Gizawiy MM, Mueller WM, Rand SD, Connelly JM, Cochran EJ, Chitambar CR, Clark P, Kuo J, Schmainda KM, Mirza SP. Acid ceramidase and its inhibitors: a de novo drug target and a new class of drugs for killing glioblastoma cancer stem cells with high efficiency. Oncotarget 2017; 8:112662-112674. [PMID: 29348854 PMCID: PMC5762539 DOI: 10.18632/oncotarget.22637] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 09/30/2017] [Indexed: 01/12/2023] Open
Abstract
Glioblastoma remains the most common, malignant primary cancer of the central nervous system with a low life expectancy and an overall survival of less than 1.5 years. The treatment options are limited and there is no cure. Moreover, almost all patients develop recurrent tumors, which typically are more aggressive. Therapeutically resistant glioblastoma or glioblastoma stem-like cells (GSCs) are hypothesized to cause this inevitable recurrence. Identifying prognostic biomarkers of glioblastoma will potentially advance knowledge about glioblastoma tumorigenesis and enable discovery of more effective therapies. Proteomic analysis of more than 600 glioblastoma-specific proteins revealed, for the first time, that expression of acid ceramidase (ASAH1) is associated with poor glioblastoma survival. CD133+ GSCs express significantly higher ASAH1 compared to CD133- GSCs and serum-cultured glioblastoma cell lines, such as U87MG. These findings implicate ASAH1 as a plausible independent prognostic marker, providing a target for a therapy tailored toward GSCs. We further demonstrate that ASAH1 inhibition increases cellular ceramide level and induces apoptosis. Strikingly, U87MG cells, and three different patient-derived glioblastoma stem-like cancer cell lines were efficiently killed, through apoptosis, by three different known ASAH1 inhibitors with IC50's ranging from 11–104 μM. In comparison, the standard glioblastoma chemotherapy agent, temozolomide, had minimal GSC-targeted effects at comparable or even higher concentrations (IC50 > 750 μM against GSCs). ASAH1 is identified as a de novo glioblastoma drug target, and ASAH1 inhibitors, such as carmofur, are shown to be highly effective and to specifically target glioblastoma GSCs. Carmofur is an ASAH1 inhibitor that crosses the blood-brain barrier, a major bottleneck in glioblastoma treatment. It has been approved in Japan since 1981 for colorectal cancer therapy. Therefore, it is poised for repurposing and translation to glioblastoma clinical trials.
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Affiliation(s)
- Ninh B Doan
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA.,Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Hisham Alhajala
- Medicine, Hematology/Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Mona M Al-Gizawiy
- Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Wade M Mueller
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Scott D Rand
- Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | | | | | - Christopher R Chitambar
- Medicine, Hematology/Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Paul Clark
- Department of Neurological Surgery and Human Oncology, University of Wisconsin, Madison, Wisconsin, 53792, USA
| | - John Kuo
- Department of Neurological Surgery and Human Oncology, University of Wisconsin, Madison, Wisconsin, 53792, USA
| | - Kathleen M Schmainda
- Medicine, Hematology/Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA.,Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA
| | - Shama P Mirza
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA.,Obstetrics and Gynecology, Medical College of Wisconsin, Milwaukee, Wisconsin, 53226, USA.,Department of Chemistry and Biochemistry, University of Wisconsin, Milwaukee, Wisconsin, 53211, USA
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Al-Gizawiy MM, Wujek RT, Alhajala HS, Doan NB, Knipstein J, Connelly JM, Mirza SP, Chitambar CR, Schmainda KM. TMOD-08. IN VITRO PRE-TREATMENT OF CELL LINES PRODUCES A ROBUST IN VIVO XENOGRAFT MODEL MIMICKING RECURRENT GLIOBLASTOMA. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox168.1047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Doan NB, Nguyen HS, Al-Gizawiy MM, Mueller WM, Sabbadini RA, Rand SD, Connelly JM, Chitambar CR, Schmainda KM, Mirza SP. Acid ceramidase confers radioresistance to glioblastoma cells. Oncol Rep 2017; 38:1932-1940. [PMID: 28765947 PMCID: PMC5652937 DOI: 10.3892/or.2017.5855] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 06/19/2017] [Indexed: 01/06/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most common primary, intracranial malignancy of the central nervous system. The standard treatment protocol, which involves surgical resection, and concurrent radiation with adjuvant temozolomide (TMZ), still imparts a grim prognosis. Ultimately, all GBMs exhibit recurrence or progression, developing resistance to standard treatment. This study demonstrates that GBMs acquire resistance to radiation via upregulation of acid ceramidase (ASAH1) and sphingosine-1-phosphate (Sph-1P). Moreover, inhibition of ASAH1 and Sph-1P, either with humanized monoclonal antibodies, small molecule drugs (i.e. carmofur), or a combination of both, led to suppression of GBM cell growth. These results suggest that ASAH1 and Sph-1P may be excellent targets for the treatment of new GBMs and recurrent GBMs, especially since the latter overexpresses ASAH1.
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Affiliation(s)
- Ninh B Doan
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Ha S Nguyen
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Mona M Al-Gizawiy
- Department of Radiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Wade M Mueller
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Roger A Sabbadini
- Department of Biology, San Diego State University, and Lpath Inc., San Diego, CA 92121, USA
| | - Scott D Rand
- Department of Radiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Jennifer M Connelly
- Department of Neurology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | | | | | - Shama P Mirza
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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Al-Gizawiy MM, Doan NB, Wujek RT, Alhajala HS, Mirza SP, Chitambar CR, Schmainda KM. TMOD-09. A PATIENT-DERIVED XENOGRAFT MODEL MIMICKING RECURRENT PEDIATRIC MALIGNANT GLIOMA. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox083.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Al-Gizawiy MM, Doan NB, Schmainda KM, Mueller WM, Connelly JM, Mirza SP. MPTH-19. GLIOMA CHARACTERIZATION USING THE NOVEL BIOMARKER ACID CERAMIDASE. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now212.457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Al-Gizawiy MM, Doan NB, Schmainda KM, Palomares JA, Mueller WM, Connelly JM, Mirza SP. MPTH-28. ACID CERAMIDASE IS A SUPPLEMENTARY BIOMARKER OF SURVIVAL IN GLIOMA. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now212.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Doan NB, Al-Gizawiy MM, Nguyen HS, Schmainda KM, Mueller WM, Mirza SP. CBIO-09. ACID CERAMIDASE CONFERS RADIORESISTANCE TO GLIOBLASTOMA CELLS. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now212.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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17
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Cossette SM, Bhute VJ, Bao X, Harmann LM, Horswill MA, Sinha I, Gastonguay A, Pooya S, Bordas M, Kumar SN, Mirza SP, Palecek SP, Strande JL, Ramchandran R. Sucrose Nonfermenting-Related Kinase Enzyme-Mediated Rho-Associated Kinase Signaling is Responsible for Cardiac Function. ACTA ACUST UNITED AC 2016; 9:474-486. [PMID: 27780848 DOI: 10.1161/circgenetics.116.001515] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 09/28/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Cardiac metabolism is critical for the functioning of the heart, and disturbance in this homeostasis is likely to influence cardiac disorders or cardiomyopathy. Our laboratory has previously shown that SNRK (sucrose nonfermenting related kinase) enzyme, which belongs to the AMPK (adenosine monophosphate-activated kinase) family, was essential for cardiac metabolism in mammals. Snrk global homozygous knockout (KO) mice die at postnatal day 0, and conditional deletion of Snrk in cardiomyocytes (Snrk cmcKO) leads to cardiac failure and death by 8 to 10 months. METHODS AND RESULTS We performed additional cardiac functional studies using echocardiography and identified further cardiac functional deficits in Snrk cmcKO mice. Nuclear magnetic resonance-based metabolomics analysis identified key metabolic pathway deficits in SNRK knockdown cardiomyocytes in vitro. Specifically, metabolites involved in lipid metabolism and oxidative phosphorylation are altered, and perturbations in these pathways can result in cardiac function deficits and heart failure. A phosphopeptide-based proteomic screen identified ROCK (Rho-associated kinase) as a putative substrate for SNRK, and mass spec-based fragment analysis confirmed key amino acid residues on ROCK that are phosphorylated by SNRK. Western blot analysis on heart lysates from Snrk cmcKO adult mice and SNRK knockdown cardiomyocytes showed increased ROCK activity. In addition, in vivo inhibition of ROCK partially rescued the in vivo Snrk cmcKO cardiac function deficits. CONCLUSIONS Collectively, our data suggest that SNRK in cardiomyocytes is responsible for maintaining cardiac metabolic homeostasis, which is mediated in part by ROCK, and alteration of this homeostasis influences cardiac function in the adult heart.
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Affiliation(s)
- Stephanie M Cossette
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Vijesh J Bhute
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Xiaoping Bao
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Leanne M Harmann
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Mark A Horswill
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Indranil Sinha
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Adam Gastonguay
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Shabnam Pooya
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Michelle Bordas
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Suresh N Kumar
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Shama P Mirza
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Sean P Palecek
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Jennifer L Strande
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.)
| | - Ramani Ramchandran
- From the Department of Pediatrics (S.M.C., A.G., S. Pooya, M.B., R.R.), OBGYN, Developmental Vascular Biology Program, Children's Research Institute (R.R.), Division of Cardiovascular Medicine, Cardiovascular Center, Clinical and Translational Science Institute (L.M.H.), Division of Cardiovascular Medicine, Department of Cell Biology, Neurobiology and Anatomy, Cardiovascular Center, Clinical and Translational Science Institute (J.L.S.), and Division of Pediatric Pathology, Department of Pathology (S.N.K.), Medical College of Wisconsin, Milwaukee; Department of Chemical and Biological Engineering (V.J.B., X.B., S. Palecek), Morgridge Institute for Research (M.A.H.), University of Wisconsin-Madison; Marginalen Bank, Stockholm, Sweden (I.S.); Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee (S.P.M.).
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Raphael R, Purushotham D, Gastonguay C, Chesnik MA, Kwok WM, Wu HE, Shah SJ, Mirza SP, Strande JL. Combining patient proteomics and in vitro cardiomyocyte phenotype testing to identify potential mediators of heart failure with preserved ejection fraction. J Transl Med 2016; 14:18. [PMID: 26792056 PMCID: PMC4719542 DOI: 10.1186/s12967-016-0774-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 01/06/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Heart failure with ejection fraction (HFpEF) is a syndrome resulting from several co-morbidities in which specific mediators are unknown. The platelet proteome responds to disease processes. We hypothesize that the platelet proteome will change composition in patients with HFpEF and may uncover mediators of the syndrome. METHODS AND RESULTS Proteomic changes were assessed in platelets from hospitalized subjects with symptoms of HFpEF (n = 9), the same subjects several weeks later without symptoms (n = 7) and control subjects (n = 8). Mass spectrometry identified 6102 proteins with five scans with peptide probabilities of ≥0.85. Of the 6102 proteins, 165 were present only in symptomatic subjects, 78 were only found in outpatient subjects and 157 proteins were unique to the control group. The S100A8 protein was identified consistently in HFpEF samples when compared with controls. We validated the fining that plasma S100A8 levels are increased in subjects with HFpEF (654 ± 391) compared to controls (352 ± 204) in an external cohort (p = 0.002). Recombinant S100A8 had direct effects on the electrophysiological and calcium handling profile in human induced pluripotent stem cell-derived cardiomyocytes. CONCLUSIONS Platelets may harbor proteins associated with HFpEF. S100A8 is present in the platelets of subjects with HFpEF and increased in the plasma of the same subjects. We further established a bedside-to-bench translational system that can be utilized as a secondary screen to ascertain whether the biomarkers may be an associated finding or causal to the disease process. S100A8 has been linked with other cardiovascular disease such as atherosclerosis and risk for myocardial infarction, stroke, or death. This is the first report on association of S100A8 with HFpEF.
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Affiliation(s)
- Roseanne Raphael
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Diana Purushotham
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Courtney Gastonguay
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, USA. .,Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA. .,Division of Cardiovascular Medicine, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Marla A Chesnik
- Biotechnology and Bioengineering, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Wai-Meng Kwok
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Hsiang-En Wu
- Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Sanjiv J Shah
- Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
| | - Shama P Mirza
- Biotechnology and Bioengineering, Medical College of Wisconsin, Milwaukee, WI, USA.
| | - Jennifer L Strande
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, USA. .,Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA. .,Division of Cardiovascular Medicine, Medical College of Wisconsin, Milwaukee, WI, USA. .,, MEB/CVC 4579, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
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Qi X, Xie C, Hou S, Li G, Yin N, Dong L, Lepp A, Chesnik MA, Mirza SP, Szabo A, Tsai S, Basir Z, Wu S, Chen G. Identification of a ternary protein-complex as a therapeutic target for K-Ras-dependent colon cancer. Oncotarget 2015; 5:4269-82. [PMID: 24962213 PMCID: PMC4147322 DOI: 10.18632/oncotarget.2001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A cancer phenotype is driven by several proteins and targeting a cluster of functionally interdependent molecules should be more effective for therapeutic intervention. This is specifically important for Ras-dependent cancer, as mutated (MT) Ras is non-druggable and targeting its interaction with effectors may be essential for therapeutic intervention. Here, we report that a protein-complex activated by the Ras effector p38γ MAPK is a novel therapeutic target for K-Ras-dependent colon cancer. Unbiased proteomic screening and immune-precipitation analyses identified p38γ interaction with heat shock protein 90 (Hsp90) and K-Ras in K-Ras MT, but not wild-type (WT), colon cancer cells, indicating a role of this complex in Ras-dependent growth. Further experiments showed that this complex requires p38γ and Hsp90 activity to maintain MT, but not WT, K-Ras protein expression. Additional studies demonstrated that this complex is activated by p38γ-induced Hsp90 phosphorylation at S595, which is important for MT K-Ras stability and for K-Ras dependent growth. Of most important, pharmacologically inhibition of Hsp90 or p38γ activity disrupts the complex, decreases K-Ras expression, and selectively inhibits the growth of K-Ras MT colon cancer in vitro and in vivo. These results demonstrated that the p38γ-activated ternary complex is a novel therapeutic target for K-Ras-dependent colon cancer.
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Affiliation(s)
- Xiaomei Qi
- Department of Pharmacology and Toxicology, Medical College of Wisconsin
| | | | | | | | | | | | | | | | | | | | | | | | - Shixiu Wu
- Department of Radiation Oncology, First Affiliated Hospital, Wenzhou Medical College, Wenzhou, China
| | - Guan Chen
- Department of Pharmacology and Toxicology, Medical College of Wisconsin; Research Services, Zablocki Veterans Affairs Medical Center, Medical College of Wisconsin, Milwaukee, WI
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Heroux MS, Chesnik MA, Halligan BD, Al-Gizawiy M, Connelly JM, Mueller WM, Rand SD, Cochran EJ, LaViolette PS, Malkin MG, Schmainda KM, Mirza SP. Comprehensive characterization of glioblastoma tumor tissues for biomarker identification using mass spectrometry-based label-free quantitative proteomics. Physiol Genomics 2014; 46:467-81. [PMID: 24803679 PMCID: PMC4587597 DOI: 10.1152/physiolgenomics.00034.2014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 05/05/2014] [Indexed: 01/21/2023] Open
Abstract
Cancer is a complex disease; glioblastoma (GBM) is no exception. Short survival, poor prognosis, and very limited treatment options make it imperative to unravel the disease pathophysiology. The critically important identification of proteins that mediate various cellular events during disease is made possible with advancements in mass spectrometry (MS)-based proteomics. The objective of our study is to identify and characterize proteins that are differentially expressed in GBM to better understand their interactions and functions that lead to the disease condition. Further identification of upstream regulators will provide new potential therapeutic targets. We analyzed GBM tumors by SDS-PAGE fractionation with internal DNA markers followed by liquid chromatography-tandem mass spectrometry (MS). Brain tissue specimens obtained for clinical purposes during epilepsy surgeries were used as controls, and the quantification of MS data was performed by label-free spectral counting. The differentially expressed proteins were further characterized by Ingenuity Pathway Analysis (IPA) to identify protein interactions, functions, and upstream regulators. Our study identified several important proteins that are involved in GBM progression. The IPA revealed glioma activation with z score 2.236 during unbiased core analysis. Upstream regulators STAT3 and SP1 were activated and CTNNα was inhibited. We verified overexpression of several proteins by immunoblot to complement the MS data. This work represents an important step towards the identification of GBM biomarkers, which could open avenues to identify therapeutic targets for better treatment of GBM patients. The workflow developed represents a powerful and efficient method to identify biomarkers in GBM.
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Affiliation(s)
- Maxime S Heroux
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Marla A Chesnik
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Brian D Halligan
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Mona Al-Gizawiy
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | | | - Wade M Mueller
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Scott D Rand
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Elizabeth J Cochran
- Department of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin; and
| | - Peter S LaViolette
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin; and
| | - Mark G Malkin
- Department of Neurology, Virginia Commonwealth University, Richmond, Virginia
| | - Kathleen M Schmainda
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biophysics, Medical College of Wisconsin, Milwaukee, Wisconsin; and
| | - Shama P Mirza
- Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin; Department of Biochemistry, Medical College of Wisconsin, Milwaukee, Wisconsin;
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Mesrobian HGO, Kryger JV, Groth TW, Fiscus GE, Mirza SP. Urinary Proteome Analysis in Patients With Stable SFU Grade 4 Ureteropelvic Junction Obstruction Differs From Normal. Urology 2013; 82:745.e1-10. [DOI: 10.1016/j.urology.2013.06.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 05/29/2013] [Accepted: 06/04/2013] [Indexed: 10/26/2022]
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Abstract
Unilateral ureteropelvic junction obstruction (UPJO) is the most common prenatally detected disease leading to hydronephrosis. The obstructive anatomic lesion leads to varying degrees of hydronephrosis, ranging from no apparent effect on renal function to atrophy. Furthermore, the natural course of hydronephrosis varies from spontaneous resolution to progressive deterioration and may take upwards of 3 years for a kidney to declare itself. The objectives of this article are to update our knowledge regarding the evaluation and management of UPJO in depth and to discuss the emerging value of urinary proteome analysis to the clinical arena.
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Affiliation(s)
- Hrair-George O Mesrobian
- Division of Pediatric Urology, Department of Urology, Medical College and Children's Hospital of Wisconsin, Milwaukee, WI 53226, USA.
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Hou S, Suresh PS, Qi X, Lepp A, Mirza SP, Chen G. p38γ Mitogen-activated protein kinase signals through phosphorylating its phosphatase PTPH1 in regulating ras protein oncogenesis and stress response. J Biol Chem 2012; 287:27895-905. [PMID: 22730326 DOI: 10.1074/jbc.m111.335794] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Phosphatase plays a crucial role in determining cellular fate by inactivating its substrate kinase, but it is not known whether a kinase can vice versa phosphorylate its phosphatase to execute this function. Protein-tyrosine phosphatase H1 (PTPH1) is a specific phosphatase of p38γ mitogen-activated protein kinase (MAPK) through PDZ binding, and here, we show that p38γ is also a PTPH1 kinase through which it executes its oncogenic activity and regulates stress response. PTPH1 was identified as a substrate of p38γ by unbiased proteomic analysis, and its resultant phosphorylation at Ser-459 occurs in vitro and in vivo through their complex formation. Genetic and pharmacological analyses showed further that Ser-459 phosphorylation is directly regulated by Ras signaling and is important for Ras, p38γ, and PTPH1 oncogenic activity. Moreover, experiments with physiological stimuli revealed a novel stress pathway from p38γ to PTPH1/Ser-459 phosphorylation in regulating cell growth and cell death by a mechanism dependent on cellular environments but independent of canonical MAPK activities. These results thus reveal a new mechanism by which a MAPK regulates Ras oncogenesis and stress response through directly phosphorylating its phosphatase.
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Affiliation(s)
- Songwang Hou
- Department of Pharmacology and Toxicology, Zablocki Veterans Affairs Medical Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
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Chesnik M, Halligan B, Olivier M, Mirza SP. Sequential abundant ion fragmentation analysis (SAIFA): an alternative approach for phosphopeptide identification using an ion trap mass spectrometer. Anal Biochem 2011; 418:197-203. [PMID: 21855524 DOI: 10.1016/j.ab.2011.07.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Revised: 07/21/2011] [Accepted: 07/22/2011] [Indexed: 10/17/2022]
Abstract
Phosphorylation has been the most studied of all the posttranslational modifications of proteins. Mass spectrometry has emerged as a powerful tool for phosphomapping on proteins/peptides. Collision-induced dissociation (CID) of phosphopeptides leads to the loss of phosphoric or metaphosphoric acid as a neutral molecule, giving an intense neutral loss product ion in the mass spectrum. Dissociation of the neutral loss product ion identifies peptide sequence. This method of data-dependent constant neutral loss (DDNL) scanning analysis has been commonly used for mapping phosphopeptides. However, preferential losses of groups other than phosphate are frequently observed during CID of phosphopeptides. Ions that result from such losses are not identified during DDNL analysis due to predetermined scanning for phosphate loss. In this study, we describe an alternative approach for improved identification of phosphopeptides by sequential abundant ion fragmentation analysis (SAIFA). In this approach, there is no predetermined neutral loss molecule, thereby undergoing sequential fragmentation of abundant peak, irrespective of the moiety lost during CID. In addition to improved phosphomapping, the method increases the sequence coverage of the proteins identified, thereby increasing the confidence of protein identification. To the best of our knowledge, this is the first report to use SAIFA for phosphopeptide identification.
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Affiliation(s)
- Marla Chesnik
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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Narayan M, Mirza SP, Twining SS. Identification of phosphorylation sites on extracellular corneal epithelial cell maspin. Proteomics 2011; 11:1382-90. [PMID: 21365746 DOI: 10.1002/pmic.201000362] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 11/24/2010] [Accepted: 12/30/2010] [Indexed: 11/05/2022]
Abstract
Maspin, a 42-kDa non-classical serine protease inhibitor (serpin), is expressed by epithelial cells of various tissues including the cornea. The protein localizes to the nucleus and cytosol, and is present in the extracellular space. While extracellular maspin regulates corneal stromal fibroblast adhesion and inhibits angiogenesis during wound healing in the cornea, the molecular mechanism of its extracellular functions is unclear. We hypothesized that identifying post-translational modifications of maspin, such as phosphorylation, may help decipher its mode of action. The focus of this study was on the identification of phosphorylation sites on extracellular maspin, since the extracellular form of the molecule is implicated in several functions. Multi-stage fragmentation MS was used to identify sites of phosphorylation on extracellular corneal epithelial cell maspin. A total of eight serine and threonine phosphorylation sites (Thr50, Ser97, Thr118, Thr157, Ser240, Ser298, Thr310 and Ser316) were identified on the extracellular forms of the molecule. Phosphorylation of tyrosine residues was not detected on extracellular maspin from corneal epithelial cell, in contrast to breast epithelial cells. This study provides the basis for further investigation into the functional role of phosphorylation of corneal epithelial maspin.
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Affiliation(s)
- Malathi Narayan
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, USA
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Collins LA, Mirza SP, Kissebah AH, Olivier M. Integrated approach for the comprehensive characterization of lipoproteins from human plasma using FPLC and nano-HPLC-tandem mass spectrometry. Physiol Genomics 2009; 40:208-15. [PMID: 19903763 DOI: 10.1152/physiolgenomics.00136.2009] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The implication of the various lipoprotein classes in the development of atherosclerotic cardiovascular disease has served to focus a great deal of attention on these particles over the past half-century. Using knowledge gained by the sequencing of the human genome, recent research efforts have been directed toward the elucidation of the proteomes of several lipoprotein subclasses. One of the challenges of such proteomic experimentation is the ability to initially isolate plasma lipoproteins subsequent to their analysis by mass spectrometry. Although several methods for the isolation of plasma lipoproteins are available, the most commonly utilized techniques require large sample volumes and may cause destruction and dissociation of lipoprotein particle-associated proteins. Fast protein liquid chromatography (FPLC) is a nondenaturing technique that has been validated for the isolation of plasma lipoproteins from relatively small sample volumes. In this study, we present the use of FPLC in conjunction with nano-HPLC-ESI-tandem mass spectrometry as a new integrated methodology suitable for the proteomic analysis of human lipoprotein fractions. Results from our analysis show that only 200 microl of human plasma suffices for the isolation of whole high density lipoprotein (HDL) and the identification of the majority of all known HDL-associated proteins using mass spectrometry of the resulting fractions.
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Affiliation(s)
- Lisamarie A Collins
- Biotechnology and Bioengineering Center, Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
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Lee JE, Mirza SP, Didier DN, Scalf M, Olivier M, Greene AS, Smith LM. Identification of cell surface markers to differentiate rat endothelial and fibroblast cells using lectin arrays and LC-ESI-MS/MS. Anal Chem 2008; 80:8269-75. [PMID: 18821777 DOI: 10.1021/ac801390b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vascular endothelial cells located at the inner surface of blood vessels are a key component in angiogenesis and are employed as a primary cell type in the study of angiogenesis. These endothelial cells are, however, easily contaminated with fibroblast cells, which are located in proximity to the endothelial cells, during their isolation from tissue. It is thus important to find markers to distinguish the two cell types. In the present work, lectin arrays were prepared using aldehyde-terminated self-assembled monolayers (SAMs) and utilized to explore cell surface carbohydrate expression patterns on endothelial and fibroblast cells. It was found that the lectins Griffonia simplicifolia II (GS II) and Ulex europaeus agglutinin I (UEA I) selectively bind to rat fibroblast cells and not to rat endothelial cells. GS II-binding glycoproteins on fibroblast cells, which are potential cell surface markers to differentiate endothelial and fibroblast cells, were captured on a GS II lectin column and analyzed by LC-ESI-MS/MS. Six candidate cell surface glycoproteins were identified. Differential expression was confirmed by Western blot analysis for two of these proteins, lysosome-associated membrane glycoprotein-1 and transmembrane glycoprotein NMB.
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Affiliation(s)
- Ji Eun Lee
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA
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29
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Abstract
Proteomics-based quantification methods for differential protein expression measurements are among the most important and challenging techniques in the field of mass spectrometry. Though numerous quantification methods have been established, no method meets all the demands for measuring accurate protein expression levels. Of the various relative quantification methods by isotopic labeling, (18)O labeling method has been shown to be simple, specific, cost-effective and applicable to a wide range of analyses. However, some researchers refrain from using the method due to long incubation periods required during the labeling process. To address this problem, we demonstrate a method by which the labeling procedure can be completed in 15 min. We digested and labeled samples using immobilized trypsin on micro-spin columns to speed up the enzyme-mediated oxygen substitution, thereby completing the labeling process within 15 min with high labeling efficiency. We demonstrate the efficiency and accuracy of the method using a four protein mixture and whole cell lysate from rat vascular endothelial cells.
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Affiliation(s)
- Shama P Mirza
- National Center for Proteomics Research, Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA.
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Mirza SP, Olivier M. Methods and approaches for the comprehensive characterization and quantification of cellular proteomes using mass spectrometry. Physiol Genomics 2007; 33:3-11. [PMID: 18162499 DOI: 10.1152/physiolgenomics.00292.2007] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Proteomics has been proposed as one of the key technologies in the postgenomic era. So far, however, the comprehensive analysis of cellular proteomes has been a challenge because of the dynamic nature and complexity of the multitude of proteins in cells and tissues. Various approaches have been established for the analyses of proteins in a cell at a given state, and mass spectrometry (MS) has proven to be an efficient and versatile tool. MS-based proteomics approaches have significantly improved beyond the initial identification of proteins to comprehensive characterization and quantification of proteomes and their posttranslational modifications (PTMs). Despite these advances, there is still ongoing development of new technologies to profile and analyze cellular proteomes more completely and efficiently. In this review, we focus on MS-based techniques, describe basic approaches for MS-based profiling of cellular proteomes and analysis methods to identify proteins in complex mixtures, and discuss the different approaches for quantitative proteome analysis. Finally, we briefly discuss novel developments for the analysis of PTMs. Altered levels of PTM, sometimes in the absence of protein expression changes, are often linked to cellular responses and disease states, and the comprehensive analysis of cellular proteome would not be complete without the identification and quantification of the extent of PTMs of proteins.
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Affiliation(s)
- Shama P Mirza
- National Center for Proteomics Research, Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA. e-mail:
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Abstract
Membrane-bound and membrane-associated proteins are difficult to analyze by mass spectrometry, since the association with lipids impedes the isolation and solubilization of the proteins in buffers suitable for mass spectrometry and the efficient generation of positively charged peptide ions by electrospray ionization. Current methods mostly utilize detergents for the isolation of proteins from membranes. In this study, we present an improved detergent-free method for the isolation and mass spectrometric identification of membrane-bound and membrane-associated proteins. We delipidate proteins from the membrane bilayer by chloroform extraction to overcome dissolution and ionization problems during analysis. Comparison of our results to results obtained by direct tryptic digestion of insoluble membrane pellets identifies an increased number of membrane proteins, and a higher quality of the resulting mass spectral data.
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Affiliation(s)
- Shama P Mirza
- National Center for Proteomics Research, Biotechnology and Bioengineering Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA.
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Premsingh S, Venkataramanan NS, Rajagopal S, Mirza SP, Vairamani M, Rao PS, Velavan K. Electron Transfer Reaction of Oxo(salen)chromium(V) Ion with Anilines. Inorg Chem 2004; 43:5744-53. [PMID: 15332827 DOI: 10.1021/ic049482w] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The kinetics of oxidation of 16 meta-, ortho-, and para-substituted anilines with nine oxo(salen)chromium(V) ions have been studied by spectrophotometric, ESIMS, and EPR techniques. During the course of the reaction, two new peaks with lambda(max) at 470 and 730 nm appear in the absorption spectrum, and these peaks are due to the formation of emeraldine forms of oligomers of aniline supported by the ESIMS peaks with m/z values 274 and 365 (for the trimer and tetramer of aniline). The rate of the reaction is highly sensitive to the change of substituents in the aryl moiety of aniline and in the salen ligand of chromium(V) complexes. Application of the Hammett equation to analyze kinetic data yields a rho value of -3.8 for the substituent variation in aniline and +2.2 for the substituent variation in the salen ligand of the metal complex. On the basis of the spectral, kinetic, and product analysis studies, a mechanism involving an electron transfer from the nitrogen of aniline to the metal complex in the rate controlling step has been proposed. The Marcus equation has been successfully applied to this system, and the calculated values are compliant with the measured values.
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Prabhakar S, Radha Kishan M, Mirza SP, Raghavan KV, Vairamani M. Mass spectral study of meso-alkyl and meso-cycloalkyl calix(4)pyrroles under electron impact conditions. Rapid Commun Mass Spectrom 2004; 18:2077-2086. [PMID: 15378721 DOI: 10.1002/rcm.1594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A series of meso-cycloalkyl calix(4)pyrroles (I) and meso-dialkyl calix(4)pyrroles (II) has been studied under electron ionization (EI) mass spectral conditions. All the calix(4)pyrroles showed prominent molecular ions. The cleavage of the C--C bond linked at position 2 of the pyrrole ring (beta-cleavage) is the foremost and dominant fragmentation process. The beta-cleavage process, either through ring opening or directly, results in the loss of an alkyl radical from the molecular ion. The collision-induced dissociation (CID) spectra of I showed specific sequential expulsion of pyrrole and/or cycloalkyl rings from the molecular ion with or without hydrogen migrations, revealing more information on the structure of individual compounds than was available from the EI spectra. The isomeric cycloalkyl calix(4)pyrroles showed distinguishable CID spectra, indicating structure specificity in initial ring opening whereas, in the case of II, the EI mass spectrum contains all the structure-indicative fragment ions. The CID spectra of II resulted in a dominant [M-R]+ ion, with other characteristic ions being less abundant.
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Affiliation(s)
- S Prabhakar
- National Center for Mass Spectrometry, Indian Institute of Chemical Technology, Hyderabad 500 007, India.
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Abstract
Some dialkylaminoethanols, precursors of chemical warfare agents such as V-agents and nitrogen mustards, were analyzed by electron impact (EI) and electrospray ionization (ESI) mass spectrometry. The fragmentation pathways in EI and ESI-MS/MS methods are rationalized. The collision-induced dissociation (CID) spectra of [M+H](+) ions of aminoethanols in ESI mode are clearly distinguishable from one another, including those of isomeric normal and branched chain dialkylaminoethanols. Structures can be proposed based on the general fragmentation pathways of these molecules.
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Affiliation(s)
- T Jagadeshwar Reddy
- National Centre for Mass Spectrometry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
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Mirza SP, Prabhakar S, Vairamani M. Estimation of proton affinity of proline and tryptophan under electrospray ionization conditions using the extended kinetic method. Rapid Commun Mass Spectrom 2001; 15:957-962. [PMID: 11400203 DOI: 10.1002/rcm.319] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The relative order of the proton affinity (PA) of 20 naturally occurring amino acids has been determined under electrospray ionization conditions and compared with earlier studies of different research workers. The order we obtained is similar to that reported by other groups except in three cases viz., valine--aspartic acid, asparagine--glutamic acid and tryptophan--proline. The PA values of proline and tryptophan are determined by the extended kinetic method using amino acids themselves as reference bases. The PA values we thus obtained for proline and tryptophan are 219.9 and 221.6 kcal/mol, respectively.
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Affiliation(s)
- S P Mirza
- National Centre for Mass Spectrometry, Indian Institute of Chemical Technology, Hyderabad - 500 007, India
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Raju NP, Mirza SP, Vairamani M, Ramulu AR, Pardhasaradhi M. 5-Ethyl-2-mercaptothiazole as matrix for matrix-assisted laser desorption/ionization of a broad spectrum of analytes in positive and negative ion mode. Rapid Commun Mass Spectrom 2001; 15:1879-1884. [PMID: 11565107 DOI: 10.1002/rcm.392] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A preliminary investigation of the use of 5-ethyl-2-mercaptothiazole as matrix in matrix-assisted laser desorption/ionization (MALDI) of a broad spectrum of analytes is reported. The analytes studied are substance P, insulin, beta-cyclodextrin, triacylglycerols of coconut oil and polypropylene glycol 2000 (PPG 2000). In the positive ion mass spectra of the matrix/analyte combinations, the formation of [M + H]+ and [M + cation]+ species were observed and compared with those obtained by using well-established matrices such as alpha-cyano-4-hydroxycinnamic acid, genticic acid, sinapinic acid and dithranol. In addition, the usefulness of this new matrix for MALDI in negative ion mode is also described using substance P and beta-cyclodextrin as examples.
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Affiliation(s)
- N P Raju
- National Centre for Mass Spectrometry, Indian Institute of Chemical Technology, Hyderabad-500 007, India
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Prabhakar S, Mirza SP, Kundu A, Roy S, Vairamani M. Claisen rearrangement of allyl phenyl ether and its sulfur and selenium analogues on electron impact. Rapid Commun Mass Spectrom 2000; 14:1116-1122. [PMID: 10867686 DOI: 10.1002/1097-0231(20000715)14:13<1116::aid-rcm997>3.0.co;2-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The electron impact (EI) mass spectrum of allyl phenyl ether (1) includes an ion at m/z 106 that is formed mainly by the loss of CO from the molecular ion, as supported by high resolution and MS/MS data. The formation of the [M - CO](+) ion from 1 can be explained in terms of the Claisen rearrangement of 1 after ionization in the ion source of the mass spectrometer. Similarly, allyl phenyl sulfide (2) and allyl phenyl selenide (3) showed characteristic ions corresponding to [M - CH(3)](+), [M - XH](+) (X = S or Se) and [M - C(2)H(4)](+.), and the formation of these ions are explained via Claisen rearrangement of 2 and 3 in the ion source of the mass spectrometer resulting in a mixture of rearrangement products. The formation of molecular ions of 2-allyl thiophenol and 2-allyl selenophenol as intermediates, that cannot be isolated as the neutrals from the solution phase Claisen rearrangement of 2 and 3, respectively, is clearly indicated in the gas phase. The mass spectra of the rearrangement products obtained from the solution phase reaction were also consistent with the proposal of formation of these products in the ion source of the mass spectrometer. The formation of characteristic fragment ions attributed to the Claisen rearrangement products are also evident in the collision induced dissociation spectra of the corresponding molecular ions. Copyright 2000 John Wiley & Sons, Ltd.
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Affiliation(s)
- S Prabhakar
- Indian Institute of Chemical Technology, Hyderabad - 500 007, India
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