Microanalysis of stomach cancer glycosaminoglycans (original) (raw)
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Einstein (São Paulo), 2015
Objective To determine the presence of glycosaminoglycans in the extracellular matrix of connective tissue from neoplastic and non-neoplastic colorectal tissues, since it has a central role in tumor development and progression. Methods Tissue samples from neoplastic and non-neoplastic colorectal tissues were obtained from 64 operated patients who had colorectal carcinoma with no distant metastases. Expressions of heparan sulphate, chondroitin sulphate, dermatan sulphate and their fragments were analyzed by electrospray ionization mass spectrometry, with the technique for extraction and quantification of glycosaminoglycans after proteolysis and electrophoresis. The statistical analysis included mean, standard deviation, and Student’st test. Results The glycosaminoglycans extracted from colorectal tissue showed three electrophoretic bands in agarose gel. Electrospray ionization mass spectrometry showed characteristic disaccharide fragments from glycosaminoglycans, indicating their str...
2009
The glycosaminoglycans are implicated in many processes important in the growth and progression of malignant tumors. In the present study glycosaminoglycans were purified from healthy, macroscopically normal and cancerous specimens of different anatomic sites and different stages of cancer and analyzed by FACE after chondroitinases and sulfatases digestion. The cancerous samples contained increased levels of 6-sulfated unsaturated disaccharides compared to macroscopically normal and healthy samples, the increase being stage-related. The differences in sulfation were found to be related to the anatomic site and the stage of cancer. RT-PCR analysis of 4-sulfotransferase mRNA revealed its presence in decreasing amounts as the stage of the cancer increased. Furthermore, the percent content of hyaluronan disaccharides was elevated in macroscopically normal samples compared to the cancerous, and in addition, it was much more elevated than that of healthy samples. Haluronan levels increase with stage in cancerous tissues. Therefore, it could be concluded that the glycosaminoglycans in colorectal cancer are biosynthetically directed to contribute in different ways depending on the cancer stage and anatomical site.
Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease, 2000
The amount and the types of glycosaminoglycans (GAGs) present in human pancreatic carcinoma were examined and compared with those in normal pancreas. Human pancreatic carcinoma contained increased levels (4-fold) of total GAGs. Particularly, this carcinoma is characterized by a 12-fold increase of hyaluronan (HA) and a 22-fold increase in chondroitin sulfate (CS) content. CS in pancreatic carcinoma exhibited an altered disaccharide composition which is associated with marked increase of non-sulfated and 6-sulfated disaccharides. Dermatan sulfate (DS) was also increased (1.5-fold) in carcinoma, whereas heparan sulfate (HS), the major GAG of normal pancreas, becomes the minor GAG in pancreatic carcinoma without significant changes in the content and in molecular size. In all cases, the galactosaminoglycans (GalGAGs, i.e. CS and DS) derived from pancreatic carcinomas were of lower molecular size compared to those from normal pancreas. The results in this study indicate, for the first time, that human pancreatic carcinoma is characterized by highly increased amounts of HA and of a structurally altered CS.
Review: Glycosaminoglycans (GAGs) versus Cancer
Journal of Environmental Bioremediation and Toxicology, 2014
Cancer or tumor is a killer disease that brings mortality worldwide. Extracellular matrix (ECM) constituents involve in the potential growth, invasive and metastasis of the tumor cell through its interaction with cell-surface receptors, growth factors and cytokines. Thus, previous researchers came with a discovery of a potential anticancer compound known as glycosaminoglycans (GAGs). GAG is a polysachharide that plays an important role in physiological and pathologicalconditions by affecting the cell properties and its functions. GAGs are majored from chondroitin sulfate (CS), dermatan sulfate (DS), keratan sulfate, heparin and heparan sulfate (HS), and hyaluronan which have their own important roles in cancer progression and cell signalling. Many researchers have reported the finding of GAGs in animal but there were least research of GAGs extraction from seafood and marine fauna. There are a few researches on extraction and analysis of GAGs from seafood wastes and marine lives such...
Changes in composition and sulfation patterns of glycoaminoglycans in renal cell carcinoma
Glycoconjugate journal, 2015
Glycosaminoglycans (GAGs) are heterogeneous, linear, highly charged, anionic polysaccharides consisting of repeating disaccharides units. GAGs have some biological significance in cancer progression (invasion and metastasis) and cell signaling. In different cancer types, GAGs undergo specific structural changes. In the present study, in depth investigation of changes in sulfation pattern and composition of GAGs, heparan sulfate (HS)/heparin (HP), chondroitin sulfate (CS)/dermatan sulfate and hyaluronan (HA) in normal renal tissue (NRT) and renal cell carcinoma tissue (RCCT) were evaluated. The statistical evaluation showed that alteration of the HS (HSNRT = 415.1 ± 115.3; HSRCCT = 277.5 ± 134.3), and CS (CSNRT = 35.3 ± 12.3; CSRCCT = 166.7 ± 108.8) amounts (in ng/mg dry tissue) were statistically significant (p < 0.05). Sulfation pattern in NRT and RCCT was evaluated to reveal disaccharide profiles. Statistical analyses showed that RCCT samples contain significantly increased amo...
Altered expression of glycosaminoglycans in metastatic 13762NF rat mammary adenocarcinoma cells
Biochemistry, 1987
A difference in the expression and metabolism of sulfated glycosaminoglycans between rat mammary tumor cells derived from a primary tumor and those from its metastatic lesions has been observed. Cells from the primary tumor possessed about equal quantities of chondroitin sulfate and heparan sulfate on their cell surfaces but released fourfold more chondroitin sulfate than heparan sulfate into their medium. ' Abbreviations: GAG, glycosaminoglycans; HS, heparan sulfate; CS, chondroitin sulfate: HA, hyaluronic acid; AMEM, a-modified minimum essential medium; FBS, fetal bovine serum; PBS, phosphate-buffered saline; CHAPS, 3-[ (3-cholamidopropyl)dimethylammonio]-l -propanesulfonate; Tris-HCI, tris(hydroxymethy1)aminomethane hydrochloride; BSA, bovine serum albumin; EDTA, ethylenediaminetetraacetic acid; ADi-OS, 2-acetamido-2-deoxy-3-O-(~-~-gluco-4-enepyranosyluronic acid)-o-galactose; ADi-4S, 2-acetamido-2-deoxy-3-O-(a-~-gluco-4-enepyranosyluronic acid)-4-O-sulfo-o-galactose; ADi-6S, 2-acetamido-2deoxy-3-O-(a-~-gluco-4-enepyranosyluronic acid)-6-O-sulfo-o-galactose; TRU, turbidity-reducing units.
Serum Glycan Signatures of Gastric Cancer
Cancer Prevention Research, 2013
Glycomics, a comprehensive study of glycans expressed in biologic systems, is emerging as a simple yet highly sensitive diagnostic tool for disease onset and progression. This study aimed to use glycomics to investigate glycan markers that would differentiate patients with gastric cancer from those with nonatrophic gastritis. Patients with duodenal ulcer were also included because they are thought to represent a biologically different response to infection with Helicobacter pylori, a bacterial infection that can cause either gastric cancer or duodenal ulcer. We collected 72 serum samples from patients in Mexico City that presented with nonatrophic gastritis, duodenal ulcer, or gastric cancer. N-glycans were released from serum samples using the generic method with PNGase F and were analyzed by matrix-assisted laser desorption/ionization Fourier transform-ion cyclotron resonance mass spectrometry. The corresponding glycan compositions were calculated based on accurate mass. ANOVA-bas...
Assay for Glycosaminoglycans by Tandem Mass Spectrometry and its Applications
Journal of analytical & bioanalytical techniques, 2014
Glycosaminoglycans (GAGs) are distributed in the whole body and play a variety of important physiological roles associated with inflammation, growth, coagulation, fibrinolysis, lipolysis, and cell-matrix biology. Accumulation of undegraded GAGs in lysosomes gives rise to a distinct clinical syndrome, mucopolysaccharidoses. Measurement of each specific GAG in a variety of specimens is urgently required to understand GAG interaction with other molecules, physiological status of patients, and prognosis and pathogenesis of the disease. We established a highly sensitive and accurate tandem mass spectrometry (LC-MS/MS) method for measurements of disaccharides derived from four specific GAGs [dermatan sulfate (DS), heparan sulfate (HS), keratan sulfate (KS), and chondroitin sulfate (CS)]. Disaccharides were produced by specific enzyme digestion of each GAG, and quantified by negative ion mode of multiple reaction monitoring. Subclasses of HS and GAGs with identical molecular weights can be...