Solid boxes represent the colocalization of insulin granules and syntaxin 1 clusters. Inhibition of extracellular signalregulated kinase erk 12. Glucosemediated spatial interactions of voltage dependent. Colocalization of insulinlike growth factor1 receptor and. Metamorph software s flexibility and versatility make it a powerful system for performing operations such as time lapse, multidimensional acquisition and 3d reconstruction, and for making measurements such as morphometry, colocalization and brightness. Metamorph basic software is compatible with the spot cameras via the spot metamorph driver, also available at the spot market webstore. If you complete your trial quickly, you can claim a 10% discount free consultation. Somatostatin srif is widely distributed in neuronal and endocrine tissues and exists in two biologically active forms, srif14 and srif28. In keeping with the faint insulin immunostaining fig. Colocalization of insulin and cpeptide was observed in only. Frontiers insulin confers differing effects on neurite. May 11, 2005 images were collected by the cooled ccd camera operated with metamorph software and then were analyzed by metamorph.
Nephrin is expressed on the surface of insulin vesicles. The aim of this study was to investigate whether diabetes modulates nephrin expression in human pancreatic islets and to explore the role of nephrin in. Oral administration of glucose and fat results in biphasic glp1 secretion. Colocalization analysis in fluorescence microscopy article pdf available in methods in molecular biology clifton, n. However, the benefitrisk balance of insulin remains controversial. We have previously demonstrated that snare solublenethylmaleimidesensitive fusion protein attachment protein receptors hypothesis may be applicable to insulin exocytosis in pancreatic. The metamorph software is on a dedicated computer using a 20 inch flat screen monitor with associated color printer. The area, average intensity, and integrated intensity in the region of overlap can be measured and saved to a log file. Nearly all of the image analysis methods described here are incorporated into image analysis software provided with microscope systems, in standalone software designed for cell biologists, and in imagej plugins, some of which are listed below. Most all measurement functions and some nonmeasurement functions used for screening save their data in the data log. B correlation between insulin concentration and luciferase activity of samples shown in a. Role of erk12 activation in microtubule stabilization and. To determine colocalization of the probes in the evanescent. Nov 30, 2006 the ratio of surface glut4 to total glut4 for each time point was fit to a single exponential decrease described by the following equation.
The data were analyzed by metamorph software nippon roper co. Colocalization of luciferase and insulin in ins1e cells expressing the reporter confocal imaging of ins1e cells expressing the reporter, with colocalization quantified in figure 1e. An integrated system for bioimaging molecular devices. Hepatic gluconeogenesis is essential for maintenance of normal blood glucose concentrations and is regulated by opposing stimulatory cyclic adenosine monophosphate, camp and inhibitory insulin.
The potential market for an oral form of insulin is assumed to be enormous, thus many laboratories have attempted to devise ways of moving enough intact insulin from the gut. Feb 24, 2010 the differential effect of insulin resistance on glut4 accumulation in the evanescent field and insertion of this glut4 into the pm is an example of selective insulin resistance, a state when one insulin regulated process is resistant to the effect of insulin, whereas another retains sensitivity brown and goldstein, 2008. Statistical tests for measures of colocalization in. Junctophilin 3 expresses in pancreatic beta cells and. Dietary and genetic control of glucose transporter 2. Arrowed boxes represent the insulin granules to be fused eventually by 50 m m kcl stimulation see the dual colored movie in supplemental data. Insulin staining was strong in the islets but fainter in the insulinoma. Next select the right stacks for the analysis in channel1 and channel2. Colocalization of glut4 and tf in the insulin stimulated state.
Transmission electron microscopy tissues and cells were fixed with 2. This includes measurements of regions, colocalization, thresholds and variables discussed later. The core staff can provide basic technical support with the use of this software. Insulin release assay control and tat fusion proteintreated 70. Site of docking and fusion of insulin secretory granules in live. Diabetes, insulin and oral hypoglycemic agents flashcards. Animations of 3d reconstructions were created with metaporph or voxx 21. The insulin structure and composition varies in different species as the sequence of the amino acids in human insulin is highly conserved. It is in the menus at analyze colocalization colocalization test. Metamorph software divides the data that is measured into different classes that are stored in different logs. The colocalization correlation coefficient was measured by using correlation plot plugin present in the metamorph 6 software costes et al. There are many menu options offered like manually count objects, colour combine, integrated morphometry analysis, region measurements and count cells.
Results for pcc are on the top row, mcc diff on the bottom row. Acquire and multichannel capture in metamorph software. It is essential to anticipate and limit the social, economic and sanitary cost of type 2 diabetes t2d, which is in constant progression worldwide. Philipson1 1department of medicine, section of endocrinology, and 2department of pathology, the university of chicago, chicago.
Colocalization of and tubulin was visualized using a plug in for image j written by pierre bourdoncle institut jacques fig. Jan 23, 2015 today, im here to share a bit more about the missing mineral you need to prevent insulin resistance in case just diet alone isnt cutting it for some of you. Metamorph offers analysis tools to handle everything from simple intensity logging to advanced morphometry analysis, colocalization, fret, 3d measurements, and more. Confocal imaging of gfptagged secretory granules combined with the use of impermeant extracellular dyes permits direct observation of insulin packaged in secretory granules, trafficking of these granules to the plasma membrane, exocytotic fusion of granules with the plasma membrane, and eventually the retrieval of membranes by endocytosis. Quantification of insulin effects by colocalization of glut2 and sucraseisomaltase over total sucraseisomaltasepositive cells fluo counted from four independent cultures with 10 fields and 200 control and 200 insulintreated cells. An insulinrelated peptide expressed in 3t3l1 adipocytes. Choose the correct channel 1 and channel 2 images stacks from the drop down lists. The colocalization test plugin performs the costes test for statistical significance which you should always do after calculating the thresholded manders coefficients and the scatterplot. Insulin regulation of hepatic gluconeogenesis through. Direct imaging shows that insulin granule exocytosis. The glucoseinsulin system helps us to keep this steady state.
A healthy person, normally has a blood glucose concentration at about 70. Physiologically, srif has a potent inhibitory effect on the secretion of a large number of hormones, including gh, insulin, glucagon, gastrin, and cholecystokinin. Demonstrates how to set up complex multidimensional imaging acquisition. Imaging exocytosis of single glucagonlike peptide1. The pattern of colocalization of syncollingfp and insulin as well as. Lhistidine sensing by calcium sensing receptor inhibits. A signaling hub of insulin receptor, dystrophin glycoprotein. Insulin internalizes glut2 in the enterocytes of healthy but.
Glucoseinduced erm protein activation and translocation. Covers different types of insulin and mixing insulin learn with flashcards, games, and more for free. Loss of mbnl function owing to sequestration of cug repeat rna has been proposed to play a role in dm pathogenesis miller et al. Jun 22, 2004 confocal imaging of gfptagged secretory granules combined with the use of impermeant extracellular dyes permits direct observation of insulin packaged in secretory granules, trafficking of these granules to the plasma membrane, exocytotic fusion of granules with the plasma membrane, and eventually the retrieval of membranes by endocytosis. The ratiometric recording of emitted fluorescence from yfp 540 nm and cfp 490 nm was created by metamorph software molecular devices.
Colocalization ratio of grp78 and mitotracker was calculated by metamorph software molecular devices, sunnyvale, ca, usa automatically. Novel signaling hub of insulin receptor, dystrophin. Schematic diagram of the insulin signaling cascade that openi. Image analysis, microscopy imaging center, larner college. Trek1 channels are expressed in insulin containing cells. The software programs include those for image analysis, statistical analysis, flow cytometry, data analysis and graphing, mass spectrometry, molecular biology, biochemistry, microarray analysis, nmr and xray diffraction and protein crystallization, and structural prediction. Glut4 is sorted to vesicles whose accumulation beneath and. Using the multi dimensional acquisition in metamorph. We, further, examined the localization of the introduced pro insulin and glut1 in 3t3l1. Metamorph basic software is a robust set of image acquisition, processing and built in analysis tools, for a costeffective solution. Colocalization of somatostatin receptor sst5 and insulin.
K return t, where a represents the fraction of glut4 at the cell surface at either the basal a basal or the insulin. It is available as part of the microscopes image acquisition system or as a standalone version. Mathematical models and software tools for the glucose. Objective to evaluate the safety and efficacy of treatment with insulin alone, insulin plus metformin, or insulin plus troglitazone in individuals with type 2 diabetes. Comparative storage and utilization analysis of insulin. Appendix of image analysis software providing colocalization assays. Cholesterol accumulation increases insulin granule size. Insulin internalizes glut2 in the enterocytes of healthy but not insulin resistant mice article pdf available in diabetes 573.
Insulin is stored in large densecore granules in pancreatic. Direct imaging shows that insulin granule exocytosis occurs by. A free powerpoint ppt presentation displayed as a flash slide show on id. Metamorph for olympus offers analysis tools to handle everything from simple intensity logging to advanced morphometry analysis, colocalization, fret, 3d measurements, and more. Try our software first before purchasing its license. Type 1 diabetes, juvenile onset and insulindependent, and type 2 diabetes, adult onset and insulinindependent. Comparative storage and utilization analysis of insulin across inpatient hospital settings tristan a. Inflammatory cytokine signaling in insulin producing. Colocalization of tsnares and insulin granules in the plasma membrane of. The merged image indicated colocalization of trek1 and. Glucoseinduced erm protein activation and translocation regulates insulin secretion james p. Immunofluorescent labeling of trek1 channels endogenously expressed in mouse pancreatic islets a and b and min6b1. Differentially regulated by insulin and selectively.
Because erk12 inhibition improved insulin stimulated 2dg uptake, we examined the effect of this inhibition on insulin signaling. Mar, 2020 in fact, the potential colocalization of gfp. Desktop app to analyze colocalization in fluorescence images on a mac. Glp1 is a potent incretin hormone that enhances the glucosedependent insulin release from pancreatic. Image acquisition was performed with metamorph software universal imaging at a monochromatic excitation of 480 nm egfp or 575 nm texas red 6nm bandwidth, with illumination times of usually 500 ms range 300 to ms.
Metamorph however is a more powerful tool and is the preferred option. In drg neurons which showed colocalization of the insr and trpv1, insulin significantly increased the total neurite length from 542. Two commonly used measurements require two selected images for proper evaluation. Pdf insulin internalizes glut2 in the enterocytes of. Imaging exocytosis of single insulin secretory granules with. A practical guide to evaluating colocalization in biological. Metamorph software molecular devices, sunnyvale, ca was used for image processing and quantification as described previously lampson et al. Activate your free trial after downloading and installing colocalizer pro app on your mac. Confocal image analysis and calculation of colocalization correlation coefficient of vdcc with car. Metamorph offline software universal imaging corporation, a subsidiary of molecular devices is a high end software package used extensively for image analysis, including colocalization, measurements of areas and distances and object counting. Increasing evidence supports that igf1 contributes to pain hypersensitivity through its insulin like growth factor1 receptor igf1r by activating igf1rakt or mapk signaling pathways, whereas v 3.
Pdk4 augments ermitochondria contact to dampen skeletal. Metamorph software molecular devices, sunnyvale, ca was. Insulin stimulation results in tyrosine phosphorylation of irs and activation of pi3k, which catalyzes the formation of pi3,4,5p3 from pi4,5p2, leading to the action of pdk1 and 2. Modeling and simulation of glucoseinsulin metabolism. Elks was colocalized with both insulin granules and syn. Colocalization in metamorph provides quantitative data regarding regions of overlap of two fluorescent probes. Site of docking and fusion of insulin secretory granules. Vimentin staining showed the presence of fibrotic tissue within the insulinoma fig. Site of docking and fusion of insulin secretory granules in. Physiologically, srif has a potent inhibitory effect on the secretion of a large number of hormones, including gh, insulin.
Elks, a protein structurally related to the active zone. The 3d confocal images obtained were processed with nikon ezc1 software as described above and imported into metamorph 6 software. Cholesterol accumulation increases insulin granule size and. Scan density analyses of biotinglut2 in insulintreated cells biotin were quantified in eight. Metamorph software opens the door for new insights into cellular function. Most such studies have been done in tumor cell lines. In order to determine the colocalization of vdcc with car, the confocal image was color thresholded for green vdcc and red car channels together.
Because erk12 inhibition improved insulinstimulated 2dg uptake, we examined the effect of this inhibition on insulin signaling. Research design and methods a total of 88 type 2 diabetic subjects using insulin monotherapy baseline hbalc 8. Using region tools, making intensityovertime measurements can be simplified with. Metamorph microscopy automation and image analysis software.
Direct imaging shows that insulin granule exocytosis occurs. The colocalization threshold plugin performs several functions for you in one go. Images were collected by the cooled ccd camera operated with metamorph software and then were analyzed by metamorph. We show that the murine glcnactiva glycosyltransferase is required for glut2 residency on the. Colocalization of gwas and eqtl signals detects target genes posted on november 21, 2016 by lana martin farhad hormozdiari recently developed a method for combining genomewide association studies gwass and quantitative trait loci eqtl studies in a statistical framework that quantifies the probability of each variant to be causal while. Red lines are objects with a diameter of 21 pixels, green lines. The glucoseinsulin system is an example of a closedloop physiological system. Lir with lc3, plakoglobin, and the insulin receptor decreased markedly compared to gfptagged fl. Colocalization of gwas and eqtl signals detects target genes. Imaging exocytosis of single insulin secretory granules.
Feb 28, 2011 the 3d confocal images obtained and processed as mentioned above by using nikon ezc1 software were imported into metamorph 6 universal imaging inc. Objective nephrin, an immunoglobulinlike protein essential for the function of the glomerular podocyte and regulated in diabetic nephropathy, is also expressed in pancreatic. Optional application modules perform assayspecific analysis, such as counting nuclei or assessing cell cycle phases, in a simple wizardlike interface. In biological experiments using live cell imaging, metamorph software combines the speed, flexibility. Forty to 80 optical sections were obtained at 150nm vertical steps. Junctophilin 3 expresses in pancreatic beta cells and is required for. Images were analyzed by usingmetaporph image processing software or nih image j wayne rasband, research services branch, national institute of mental health, bethesda.
Potentiation of calcium influx and insulin secretion in. The missing mineral you need to prevent insulin resistance. Both source images were thresholded to select only the punctate structures prior to performing the measurements. Percentage of simulated images with p values less than 0. For this particular lineage, more effort is still required to stress the importance of developing an efficient, reproducible, easy, and costeffective differentiation protocol to obtain more mature, homogeneous, and functional insulin secreting cells. Schematic diagram of the insulin signaling cascade that regulates glut4 exocytosis in the plasma membrane in adipose cells. Supplemental information high throughput luminescent. Insulin like growth factor1 igf1 is a neurotrophic factor and plays important roles in the nervous system. Pdf colocalization analysis in fluorescence microscopy. Sec16a is known to be required for copii vesicle formation from the er. To quantify the colocalization of syntaxin 6 and insulin, we utilized the colocalization measurement tools in metamorph image analysis software. Lhistidine sensing by calcium sensing receptor inhibits voltagedependent calcium channel activity and insulin secretion in.
Sec16a is a rab10 effector required for insulinstimulated. Imaris suite bitplane this is one of the best software packages available for processing and analysis of 3d and 4d images. Metamorph basic microscopy automation and image analysis. Human pluripotent stem cells retain the extraordinary capacity to differentiate into pancreatic beta cells. Philipson1 1department of medicine, section of endocrinology, and 2department of pathology, the university of chicago, chicago, illinois submitted 5 april 2010. When blood glucose targets are not achieved with diet and lifestyle intervention, insulin is recommended whether or not the patient is already taking hypoglycaemic drugs.
1396 659 904 733 432 480 1271 1136 231 1244 258 749 552 634 1535 1299 1219 1340 739 1149 1349 1555 985 436 980 275 632 1486 1580 1118 855 1150 16 599 666 1564 10 828 1373 497 515 912 746 754 936 1236 433