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Results: 1 to 3 of 3

Publication Record


Identification of Proteomic Features To Distinguish Benign Pulmonary Nodules from Lung Adenocarcinoma.
Codreanu SG, Hoeksema MD, Slebos RJC, Zimmerman LJ, Rahman SMJ, Li M, Chen SC, Chen H, Eisenberg R, Liebler DC, Massion PP
(2017) J Proteome Res 16: 3266-3276
MeSH Terms: 5-Lipoxygenase-Activating Proteins, Adenocarcinoma, Adenocarcinoma of Lung, Adult, Aged, Antigens, CD, Arachidonate 5-Lipoxygenase, Biomarkers, Tumor, CD11 Antigens, Cell Adhesion Molecules, Diagnosis, Differential, Female, GPI-Linked Proteins, Gene Expression Regulation, Neoplastic, Glucose Transporter Type 3, Humans, Integrin alpha Chains, Lung Neoplasms, Male, Middle Aged, Neoplasm Proteins, Proteomics, Respiratory Mucosa, Solitary Pulmonary Nodule, Tandem Mass Spectrometry, Tissue Array Analysis, Transcriptome
Show Abstract · Added January 29, 2018
We hypothesized that distinct protein expression features of benign and malignant pulmonary nodules may reveal novel candidate biomarkers for the early detection of lung cancer. We performed proteome profiling by liquid chromatography-tandem mass spectrometry to characterize 34 resected benign lung nodules, 24 untreated lung adenocarcinomas (ADCs), and biopsies of bronchial epithelium. Group comparisons identified 65 proteins that differentiate nodules from ADCs and normal bronchial epithelium and 66 proteins that differentiate ADCs from nodules and normal bronchial epithelium. We developed a multiplexed parallel reaction monitoring (PRM) assay to quantify a subset of 43 of these candidate biomarkers in an independent cohort of 20 benign nodules, 21 ADCs, and 20 normal bronchial biopsies. PRM analyses confirmed significant nodule-specific abundance of 10 proteins including ALOX5, ALOX5AP, CCL19, CILP1, COL5A2, ITGB2, ITGAX, PTPRE, S100A12, and SLC2A3 and significant ADC-specific abundance of CEACAM6, CRABP2, LAD1, PLOD2, and TMEM110-MUSTN1. Immunohistochemistry analyses for seven selected proteins performed on an independent set of tissue microarrays confirmed nodule-specific expression of ALOX5, ALOX5AP, ITGAX, and SLC2A3 and cancer-specific expression of CEACAM6. These studies illustrate the value of global and targeted proteomics in a systematic process to identify and qualify candidate biomarkers for noninvasive molecular diagnosis of lung cancer.
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27 MeSH Terms
Two protein N-acetylgalactosaminyl transferases regulate synaptic plasticity by activity-dependent regulation of integrin signaling.
Dani N, Zhu H, Broadie K
(2014) J Neurosci 34: 13047-65
MeSH Terms: Animals, Drosophila, Drosophila Proteins, Integrin alpha Chains, N-Acetylgalactosaminyltransferases, Neuromuscular Junction, Neuronal Plasticity, Synaptic Transmission, Synaptic Vesicles, Tenascin
Show Abstract · Added March 29, 2017
Using a Drosophila whole-genome transgenic RNAi screen for glycogenes regulating synapse function, we have identified two protein α-N-acetylgalactosaminyltransferases (pgant3 and pgant35A) that regulate synaptic O-linked glycosylation (GalNAcα1-O-S/T). Loss of either pgant alone elevates presynaptic/postsynaptic molecular assembly and evoked neurotransmission strength, but synapses appear restored to normal in double mutants. Likewise, activity-dependent facilitation, augmentation, and posttetanic potentiation are all suppressively impaired in pgant mutants. In non-neuronal contexts, pgant function regulates integrin signaling, and we show here that the synaptic Position Specific 2 (αPS2) integrin receptor and transmembrane tenascin ligand are both suppressively downregulated in pgant mutants. Channelrhodopsin-driven activity rapidly (<1 min) drives integrin signaling in wild-type synapses but is suppressively abolished in pgant mutants. Optogenetic stimulation in pgant mutants alters presynaptic vesicle trafficking and postsynaptic pocket size during the perturbed integrin signaling underlying synaptic plasticity defects. Critically, acute blockade of integrin signaling acts synergistically with pgant mutants to eliminate all activity-dependent synaptic plasticity.
Copyright © 2014 the authors 0270-6474/14/3413047-19$15.00/0.
1 Communities
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10 MeSH Terms
Forces for morphogenesis investigated with laser microsurgery and quantitative modeling.
Hutson MS, Tokutake Y, Chang MS, Bloor JW, Venakides S, Kiehart DP, Edwards GS
(2003) Science 300: 145-9
MeSH Terms: Animals, Animals, Genetically Modified, Cell Adhesion, Drosophila, Drosophila Proteins, Embryo, Nonmammalian, Embryonic Development, Epithelial Cells, Epithelium, Genes, Insect, Image Processing, Computer-Assisted, Integrin alpha Chains, Integrins, Lasers, Mathematics, Microscopy, Confocal, Microsurgery, Models, Biological, Morphogenesis, Mutation, Pseudopodia
Show Abstract · Added May 20, 2014
We investigated the forces that connect the genetic program of development to morphogenesis in Drosophila. We focused on dorsal closure, a powerful model system for development and wound healing. We found that the bulk of progress toward closure is driven by contractility in supracellular "purse strings" and in the amnioserosa, whereas adhesion-mediated zipping coordinates the forces produced by the purse strings and is essential only for the end stages. We applied quantitative modeling to show that these forces, generated in distinct cells, are coordinated in space and synchronized in time. Modeling of wild-type and mutant phenotypes is predictive; although closure in myospheroid mutants ultimately fails when the cell sheets rip themselves apart, our analysis indicates that beta(PS) integrin has an earlier, important role in zipping.
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21 MeSH Terms