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Schraink T, Blumenberg L, Hussey G, George S, Miller B, Mathew N, González-Robles TJ, Sviderskiy V, Papagiannakopoulos T, Possemato R, Fenyö D, Ruggles KV. PhosphoDisco: A Toolkit for Co-regulated Phosphorylation Module Discovery in Phosphoproteomic Data. Mol Cell Proteomics 2023; 22:100596. [PMID: 37394063 PMCID: PMC10416063 DOI: 10.1016/j.mcpro.2023.100596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 04/20/2023] [Accepted: 06/12/2023] [Indexed: 07/04/2023] Open
Abstract
Kinases are key players in cancer-relevant pathways and are the targets of many successful precision cancer therapies. Phosphoproteomics is a powerful approach to study kinase activity and has been used increasingly for the characterization of tumor samples leading to the identification of novel chemotherapeutic targets and biomarkers. Finding co-regulated phosphorylation sites which represent potential kinase-substrate sets or members of the same signaling pathway allows us to harness these data to identify clinically relevant and targetable alterations in signaling cascades. Unfortunately, studies have found that databases of co-regulated phosphorylation sites are only experimentally supported in a small number of substrate sets. To address the inherent challenge of defining co-regulated phosphorylation modules relevant to a given dataset, we developed PhosphoDisco, a toolkit for determining co-regulated phosphorylation modules. We applied this approach to tandem mass spectrometry based phosphoproteomic data for breast and non-small cell lung cancer and identified canonical as well as putative new phosphorylation site modules. Our analysis identified several interesting modules in each cohort. Among these was a new cell cycle checkpoint module enriched in basal breast cancer samples and a module of PRKC isozymes putatively co-regulated by CDK12 in lung cancer. We demonstrate that modules defined by PhosphoDisco can be used to further personalized cancer treatment strategies by establishing active signaling pathways in a given patient tumor or set of tumors, and in providing new ways to classify tumors based on signaling activity.
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Affiliation(s)
- Tobias Schraink
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA; Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA; Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, New York, USA
| | - Lili Blumenberg
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA; Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA
| | - Grant Hussey
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA; Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA; Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, New York, USA
| | - Sabrina George
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA; Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA
| | - Brecca Miller
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA; Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA
| | - Nithu Mathew
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA; Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA
| | - Tania J González-Robles
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA; Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA; Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, New York, USA
| | - Vladislav Sviderskiy
- Department of Pathology, New York University Grossman School of Medicine, New York, New York, USA
| | | | - Richard Possemato
- Department of Pathology, New York University Grossman School of Medicine, New York, New York, USA
| | - David Fenyö
- Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA; Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, New York, USA
| | - Kelly V Ruggles
- Division of Precision Medicine, Department of Medicine, New York University Grossman School of Medicine, New York, New York, USA; Institute for Systems Genetics, New York University Grossman School of Medicine, New York, New York, USA.
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Miniaturized technologies for high-throughput drug screening enzymatic assays and diagnostics – A review. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.115862] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Shraim AS, Hunaiti A, Awidi A, Alshaer W, Ababneh NA, Abu-Irmaileh B, Odeh F, Ismail S. Developing and Characterization of Chemically Modified RNA Aptamers for Targeting Wild Type and Mutated c-KIT Receptor Tyrosine Kinases. J Med Chem 2019; 63:2209-2228. [PMID: 31369705 DOI: 10.1021/acs.jmedchem.9b00868] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The c-KIT receptor represents an attractive target for cancer therapy. Aptamers are emerging as a new promising class of nucleic acid therapeutics. In this study, a conventional SELEX approach was applied against the kinase domain of a group of c-KIT proteins (c-KITWT, c-KITD816V, and c-KITD816H) to select aptamers from a random RNA pool that can bind to the kinase domain of each target with high affinity and can selectively interfere with their kinase activities. Interestingly, our data indicated that one candidate aptamer, called V15, can specifically inhibit the in vitro kinase activity of mutant c-KITD816V with an IC50 value that is 9-fold more potent than the sunitinib drug tested under the same conditions. Another aptamer, named as H5/V36, showed the potential to distinguish between the c-KIT kinases by modulating the phosphorylation activity of each in a distinct mechanism of action and in a different potency.
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Affiliation(s)
- Ala'a S Shraim
- Department of Biological Sciences, School of Science, The University of Jordan, Amman JO 11942, Jordan.,Department of Medical Laboratory Sciences, Faculty of Allied Medical Sciences, Al-Ahliyya Amman University, Amman JO 19328, Jordan
| | - Abdelrahim Hunaiti
- Department of Clinical Laboratory Sciences, School of Science, The University of Jordan, Amman JO 11942, Jordan
| | - Abdalla Awidi
- Cell Therapy Center, The University of Jordan, Amman JO 11942, Jordan
| | - Walhan Alshaer
- Cell Therapy Center, The University of Jordan, Amman JO 11942, Jordan
| | - Nidaa A Ababneh
- Cell Therapy Center, The University of Jordan, Amman JO 11942, Jordan
| | - Bashaer Abu-Irmaileh
- Hamdi Mango Center for Scientific Research, The University of Jordan, Amman JO 11942, Jordan
| | - Fadwa Odeh
- Department of Chemistry, School of Science, The University of Jordan, Amman JO 11942, Jordan
| | - Said Ismail
- Department of Biochemistry and Physiology, School of Medicine, The University of Jordan, Amman JO 11942, Jordan.,Qatar Genome Project, Qatar Foundation, Doha, Qatar
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Imamura RM, Kumagai K, Nakano H, Okabe T, Nagano T, Kojima H. Inexpensive High-Throughput Screening of Kinase Inhibitors Using One-Step Enzyme-Coupled Fluorescence Assay for ADP Detection. SLAS DISCOVERY 2018; 24:284-294. [PMID: 30418800 DOI: 10.1177/2472555218810139] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Protein kinases are attractive targets for both biological research and drug development. Several assay kits, especially for the detection of adenosine diphosphate (ADP), which is universally produced by kinases, are commercially available for high-throughput screening (HTS) of kinase inhibitors, but their cost is quite high for large-scale screening. Here, we report a new enzyme-coupled fluorescence assay for ADP detection, which uses just 10 inexpensive, commercially available components. The assay protocol is very simple, requiring only the mixing of test solutions with ADP detection solution and reading the fluorescence intensity of resorufin produced by coupling reaction. To validate the assay, we focused on CDC2-like kinase 1 (CLK1), a dual-specificity kinase that plays an important role in alternative splicing, and we used the optimized assay to screen an in-house chemical library of about 215,000 compounds for CLK1 inhibitors. We identified and validated 12 potent inhibitors of CLK1, including a novel inhibitory scaffold. The results demonstrate that this assay platform is not only simple and cost-effective, but also sufficiently robust, showing good reproducibility and giving similar results to those obtained with the widely used ADP-Glo bioluminescent assay.
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Affiliation(s)
| | - Kazuo Kumagai
- 1 Drug Discovery Initiative, The University of Tokyo, Tokyo, Japan.,2 Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University, Kobe, Japan
| | - Hirofumi Nakano
- 1 Drug Discovery Initiative, The University of Tokyo, Tokyo, Japan
| | - Takayoshi Okabe
- 1 Drug Discovery Initiative, The University of Tokyo, Tokyo, Japan
| | - Tetsuo Nagano
- 1 Drug Discovery Initiative, The University of Tokyo, Tokyo, Japan
| | - Hirotatsu Kojima
- 1 Drug Discovery Initiative, The University of Tokyo, Tokyo, Japan
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Mao Y, Pan Y, Li X, Li B, Chu J, Pan T. High-precision digital droplet pipetting enabled by a plug-and-play microfluidic pipetting chip. LAB ON A CHIP 2018; 18:2720-2729. [PMID: 30014071 DOI: 10.1039/c8lc00505b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Emerging demands for handling minute liquid samples and reagents have been constantly growing in a wide variety of medical and biological areas. This calls for low-volume and high-precision liquid handling solutions with ease-of-use and portability. In this article, a new digital droplet pipetting method is introduced for the first time, derived from the microfluidic impact printing principle. Configured as a conventional handheld pipette, the prototype device consists of a plug-and-play and disposable microfluidic pipetting chip, driven by a programmable electromagnetic actuator for on-demand dispensing of nanoliter droplets. In particular, the impact-driven microfluidic pipetting chip, in place of the traditional disposable pipette tips, offers both liquid loading and droplet generation. The printing nozzle has been micro-fabricated using a femtosecond laser with a super-hydrophobic structure, in order to minimize the dispensing residues. As a result of the high-precision droplet dispensing principle, the variations of the dispensed volume have been successfully reduced from 49.5% to 0.6% at 0.1 μL, as compared to its commercial counterparts. A proof-of-concept study for concentration dilution and quantitative analysis of cell drug resistance has been carried out by using the digital droplet pipetting system, demonstrating its potential in a broad range of biomedical applications which require both high precision and low-volume processing.
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Affiliation(s)
- Yuxin Mao
- Department of Precision Machinery & Precision Instrumentation, University of Science & Technology of China, Hefei, Anhui 230027, China.
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Using Bioluminescent Kinase Profiling Strips to Identify Kinase Inhibitor Selectivity and Promiscuity. Methods Mol Biol 2016; 1360:59-73. [PMID: 26501902 DOI: 10.1007/978-1-4939-3073-9_5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The advancement of a kinase inhibitor throughout drug discovery and development is predicated upon its selectivity towards the target of interest. Thus, profiling the compound against a broad panel of kinases is important for providing a better understanding of its activity and for obviating any off-target activities that can result in undesirable consequences. To assess the selectivity and potency of an inhibitor against multiple kinases, it is desirable to use a universal assay that can monitor the activity of all classes of kinases regardless of the nature of their substrates. The luminescent ADP-Glo kinase assay is a universal platform that measures kinase activity by quantifying the amount of the common kinase reaction product ADP. Here we present a method using standardized kinase profiling systems for inhibitor profiling studies based on ADP detection by luminescence. The kinase profiling systems are sets of kinases organized by family, presented in multi-tube strips containing eight enzymes, each with corresponding substrate strips, and standardized for optimal kinase activity. We show that using the kinase profiling strips we could quickly and easily generate multiple selectivity profiles using small or large kinase panels, and identify compound promiscuity within the kinome.
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Hennek J, Alves J, Yao E, Goueli SA, Zegzouti H. Bioluminescent kinase strips: A novel approach to targeted and flexible kinase inhibitor profiling. Anal Biochem 2015; 495:9-20. [PMID: 26628096 DOI: 10.1016/j.ab.2015.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 11/11/2015] [Accepted: 11/16/2015] [Indexed: 11/19/2022]
Abstract
In addition to target efficacy, drug safety is a major requirement during the drug discovery process and is influenced by target specificity. Therefore, it is imperative that every new drug candidate be profiled against various liability panels that include protein kinases. Here, an effective methodology to streamline kinase inhibitor profiling is described. An accessible standardized profiling system for 112 protein kinases covering all branches of the kinome was developed. This approach consists of creating different sets of kinases and their corresponding substrates in multi-tube strips. The kinase stocks are pre-standardized for optimal kinase activity and used for inhibitor profiling using a bioluminescent ADP detection assay. We show that these strips can routinely generate inhibitor selectivity profiles for small or broad kinase family panels. Lipid kinases were also assembled in strip format and profiled together with protein kinases. We identified two specific PI3K inhibitors that have off-target effects on CK2 that were not reported before and would have been missed if compounds were not profiled against lipid and protein kinases simultaneously. To validate the accuracy of the data generated by this method, we confirmed that the inhibition potencies observed are consistent with published values produced by more complex technologies such as radioactivity assays.
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Affiliation(s)
- J Hennek
- R&D Department, Promega Corporation, Madison, WI 53711, USA
| | - J Alves
- R&D Department, Promega Corporation, Madison, WI 53711, USA
| | - E Yao
- SignalChem Pharmaceuticals, Richmond, British Columbia V6V 2J2, Canada
| | - S A Goueli
- R&D Department, Promega Corporation, Madison, WI 53711, USA; Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA
| | - H Zegzouti
- R&D Department, Promega Corporation, Madison, WI 53711, USA.
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Considerations for the design and reporting of enzyme assays in high-throughput screening applications. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.pisc.2013.12.001] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Jung IH, Leem GL, Jung DE, Kim MH, Kim EY, Kim SH, Park HC, Park SW. Glioma is formed by active Akt1 alone and promoted by active Rac1 in transgenic zebrafish. Neuro Oncol 2013; 15:290-304. [PMID: 23325864 DOI: 10.1093/neuonc/nos387] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Ongoing characterization of glioma has revealed that Akt signaling plays a crucial role in gliomagenesis. In mouse models, however, Akt alone was not sufficient to induce glioma. METHODS We established transgenic zebrafish that overexpressed dominant-active (DA) human Akt1 or Rac1(G12V) (DARac1) at ptf1a domain and investigated transgenic phenotypes and mechanisms leading to gliomagenesis. RESULTS Transgene expressions were spatiotemporally restricted without any developmental abnormality of embryos and persisted at cerebellum and medulla in adult zebrafish. DAAkt1 alone induced glioma (with visible bumps at the head), with incidences of 36.6% and 49% at 6 and 9 months, respectively. Histologically, gliomas showed various histologic grades, increased proliferation, and frequent invasion into the fourth ventricle. Preferential location of small tumors at periventricular area and coexpression of Her4 suggested that tumors originated from Ptf1a- and Her4-positive progenitor cells at ventricular zone. Gliomagenesis was principally mediated by activation of survival pathway through upregulation of survivin genes. Although DARac1 alone was incapable of gliomagenesis, when coexpressed with DAAkt1, gliomagenesis was accelerated, showing higher tumor incidences (62.0% and 73.3% at 6 and 9 months, respectively), advanced histologic grade, invasiveness, and shortened survival. DARac1 upregulated survivin2, cyclin D1, β-catenin, and snail1a but downregulated E-cadherin, indicating that DARac1 promotes gliomagenesis by enhancing proliferation, survival, and epithelial-to-mesenchymal transition. On pharmacologic tests, only Akt1/2 inhibitor effectively suppressed gliomagenesis, inhibited cellular proliferation, and induced apoptosis in established gliomas. CONCLUSIONS The zebrafish model reinforces the pivotal role of Akt signaling in gliomagenesis and suggests Rac1 as an important protein involved in progression.
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Affiliation(s)
- In Hye Jung
- Postgraduate School of National Core Research Center for Nanomedical Technology, Seoul, Korea
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