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Wyszukujesz frazę "Glycosylation" wg kryterium: Temat


Tytuł:
Study of concentration of advanced protein glycation products in pregnant women with physiological pregnancy and pregnancy complicated with pre-eclampsia
Czy AGEs mogą być markerami stanu przedrzucawkowego? Badanie stężenia zaawansowanych produktów glikacji białek u kobiet ciężarnych z ciążą fizjologiczną i ciążą powikłaną stanem przedrzucawkowym
Autorzy:
Bodzek, Piotr
Janosz, Iwona
Damasiewicz-Bodzek, Aleksandra
Witek, Łukasz
Olejek, Anita
Powiązania:
https://bibliotekanauki.pl/articles/2130135.pdf
Data publikacji:
2022-10-12
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
AGEs
pregnancy
pre-eclampsia
non-enzymatic glycosylation
advanced glycation end products
ciąża
stan przedrzucawkowy
nieenzymatyczna glikozylacja
zaawansowane produkty glikacji białek
Opis:
INTRODUCTION: The role of advanced glycation end products (AGEs) in the pathomechanism of arterial hypertension has been demonstrated, but little information is available on the influence of AGEs on the course of pre-eclampsia (PE). The aim of the study was to assess the concentration profile of advanced protein glycation products in pregnant women diagnosed with PE. MATERIAL AND METHODS: The concentrations of AGEs, carboxymethyllysine (CML), carboxyethyllysine (CEL) and methylglyoxal (MG) in the sera of female respondents were determined using the enzyme immunoassay method. RESULTS: The levels of AGE and CML were lower in the group of women with PE compared to the group of non- -pregnant women (p = 0.0411 and p = 0.0072). A lower CML concentration was found in healthy pregnant women as compared to healthy non-pregnant women (p = 0.00068). Positive correlations were found between AGE and CML levels in women with PE (R = 0.339, p = 0.032) and between CML and CEL in healthy non-pregnant women (R = 0.447, p = 0.012). CONCLUSIONS:We suggest that there is a decrease in the intensity of non-enzymatic protein glycation during pregnancy. Moreover, our study indicates that isolated PE may be associated with a different pathomechanism than chronic hypertension, and therefore AGEs cannot be at present considered a marker of PE.
WSTĘP: Rola końcowych produktów zaawansowanejglikacji (advanced glycation end products – AGEs) w patomechanizmie nadciśnienia tętniczego została udowodniona, jednak niewiele jest informacji na temat wpływu AGEs na prze-bieg stanu przedrzucawkowego (pre-eclampsia – PE). Celem pracy była ocena profilu stężeń zaawansowanych produktów glikacji białek u kobiet ciężarnych z rozpoznaniem PE. MATERIAŁ I METODY: Oznaczenia stężeń AGEs, karboksymetylolizyny (carboxymethyllysine – CML), karboksyetylolizyny (carboxyethyllysine – CEL) i metyloglioksalu (methylglyoxal – MG) w surowicy badanych kobiet wykonano metodą immunoenzymatyczną. WYNIKI: Stężenia AGE i CML były niższe w grupie kobiet z PE w porównaniu z grupą kobiet nieciężarnych (p = 0,0411 i p = 0,0072). Stwierdzono niższe stężenie CML u zdrowych ciężarnych w porównaniu ze zdrowymi nieciężarnymi (p = 0,00068). Stwierdzono dodatnie korelacje pomiędzy stężeniem AGE i CML u kobiet z PE (R = 0,339, p = 0,032) oraz pomiędzy CML i CEL u zdrowych kobiet nieciężarnych (R = 0,447, p = 0,012). WNIOSKI: Sugerujemy, że w czasie ciąży dochodzi do zmniejszenia intensywności nieenzymatycznej glikacji białek. Ponadto nasze badanie wskazuje, że izolowane PE może być związane z innym patomechanizmem niż przewlekłe nadciśnienie tętnicze i dlatego AGEs nie mogą być obecnie uważane za marker PE.
Źródło:
Annales Academiae Medicae Silesiensis; 2022, 76; 106-111
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes of the expression of Lewis blood group antigens in glycoproteins of renal cancer tissues
Autorzy:
Borzym-Kluczyk, Małgorzata
Radziejewska, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/1039579.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
ELISA
sialyl Lewisa/x
glycosylation
renal cancer
Opis:
Sialic acid and sialyl Lewisa/x are found on N- and O-glycans of many human malignant cells. Carbohydrate antigens can be used as tumor markers, and an increase of their levels in cancer cells is associated with tumor progression. The aim of this study was to assess the level of some Lewis blood group antigens on glycoproteins in tumor (cancer tissue), intermediate zone (adjacent to tumor tissue), and normal renal cortex/medulla (uninvolved by tumor). The study was performed on tissues taken from 30 patients. Relative amounts of sugar structures of proteins with molecular masses above 30 kDa were determined by ELISA-like test with biotinylated lectins: MAA (Maackia amurensis), SNA (Sambucus nigra), and monoclonal antibodies anti-sialyl Lewisa/x.. Higher expression of all examined structures was revealed in cancer tissues. Significant increases were observed for sialic acid linked α 2-3 in cancer tissues when compared to healthy ones and also among intermediate and healthy tissues. The sialic acid linked α 2-6 and sialyl Lewisx structures were significantly increased in cancerous cells when compared to normal and intermediate renal tissue. In case of sialyl Lewisa antigen, a significant difference was discovered between normal and intermediate tissue. Our results confirm that the examined Lewis antigens can be involved in tumor development. Their increase in cancer tissues can suggest their specific role in the process.
Źródło:
Acta Biochimica Polonica; 2013, 60, 2; 223-226
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Congenital disorders of glycosylation. Part I. Defects of protein N-glycosylation
Autorzy:
Cylwik, Bogdan
Naklicki, Marcin
Chrostek, Lech
Gruszewska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/1039567.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
N-glycosylation
genetic defects
diagnostics
Opis:
Glycosylation is the most common chemical process of protein modification and occurs in every living cell. Disturbances of this process may be either congenital or acquired. Congenital disorders of glycosylation (CDG) are a rapidly growing disease family, with about 50 disorders reported since its first clinical description in 1980. Most of the human diseases have been discovered recently. CDG result from defects in the synthesis of the N- and O-glycans moiety of glycoproteins, and in the attachment to the polypeptide chain of proteins. These defects have been found in the activation, presentation, and transport of sugar precursors, in the enzymes responsible for glycosylation, and in proteins that control the traffic of component. There are two main types of protein glycosylation: N-glycosylation and O-glycosylation. Most diseases are due to defects in the N-glycosylation pathway. For the sake of convenience, CDG were divided into 2 types, type I and II. CDG can affect nearly all organs and systems. The considerable variability of clinical features makes it difficult to recognize patients with CDG. Diagnosis can be made on the basis of abnormal glycosylation display. In this paper, an overview of CDG with a new nomenclature limited to the group of protein N-glycosylation disorders, clinical phenotype and diagnostic approach, have been presented. The location, reasons for defects, and the number of cases have been also described. This publication aims to draw attention to the possibility of occurrence of CDG in each multisystem disorder with an unknown origin.
Źródło:
Acta Biochimica Polonica; 2013, 60, 2; 151-161
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Congenital disorders of glycosylation. Part II. Defects of protein O-glycosylation
Autorzy:
Cylwik, Bogdan
Lipartowska, Karina
Chrostek, Lech
Gruszewska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/1039531.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
O-glycosylation
genetic defects
diagnostics
Opis:
Glycosylation is a form of post-translational modification of proteins and occurs in every living cell. The carbohydrate chains attached to the proteins serve various functions. There are two main types of protein glycosylation: N-glycosylation and O-glycosylation. In this paper, we describe the O-glycosylation process and currently known congenital disorders of glycosylation associated with defects of protein O-glycosylation. This process takes place in the cis Golgi apparatus after N-glycosylation and folding of the proteins. The O-glycosylation is essential in the biosynthesis of mucins, the formation of proteoglycan core proteins and blood group proteins. Most common forms of O-glycans are the mucin-type glycans. There are more than 20 known disorders related to O-glycosylation disturbances. We review 8 of the following diseases linked to defects in the synthesis of O-xylosylglycans, O-N acetylgalactosaminylglycans, O-xylosyl/N-acetylglycans, O-mannosylglycans, and O-fucosylglycans: multiple exostoses, progeroid variant of Ehlers-Danlos syndrome, progeria, familial tumoral calcinosis, Schneckenbecken dysplasia, Walker-Warburg syndrome, spondylocostal dysostosis type 3, and Peter's plus syndrome. Causes of these diseases include gene mutations and deficiency of proteins (enzymes). Their diagnosis includes syndromic presentation, organ-specific expression and laboratory findings.
Źródło:
Acta Biochimica Polonica; 2013, 60, 3; 361-368
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative biochemical analysis of lectin and nuclease from Chelidonium majus L.
Autorzy:
Fik, Ewa
Dalgalarrondo, Michele
Haertlé, Thomas
Goździcka-Józefiak, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1044368.pdf
Data publikacji:
2000
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
glycoproteins
glycosylation
plant lectins
Chelidonium majus
Opis:
It has been recently recognized that lectins exhibit other activities besides hemagglutination. Previously we have found that purified lectin from Chelidonium majus showed DNase activity (Fik, Goździcka-Józefiak & Kędzia, 1995, Herba Polon. 41, 84-95). Comparison of lectin and DNase from the sap from leaves and roots of Chelidonium majus proved that both these compounds are composed of 24 kDa monomer subunits which have an identical N-terminal sequence but differ in amino-acid composition and degree of glycosylation. Possible interrelationship between lectin and DNase is discussed.
Źródło:
Acta Biochimica Polonica; 2000, 47, 2; 413-420
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Disruption of Trichoderma reesei gene encoding protein O-mannosyltransferase I results in a decrease of the enzyme activity and alteration of cell wall composition
Autorzy:
Górka-Nieć, Wioletta
Pniewski, Michał
Kania, Anna
Perlińska-Lenart, Urszula
Palamarczyk, Grażyna
Kruszewska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1040737.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Trichoderma reesei
pmt1 gene disruption
protein glycosylation
cell wall composition
Opis:
In fungi transfer of the first mannosyl residue to proteins during their O-glycosylation is catalyzed by protein O-mannosyltransferases encoded by pmt genes. Disruption of the pmt1 gene in Trichoderma caused a significant decrease in the total activity of protein O-mannosyltransferases. Moreover, disruption of the pmt1 gene also led to osmotic sensitivity of the strain, indicating an essential role of the PMTI protein activity for cell wall synthesis. At the same time, the strain was defective in septa formation, producing only half the number of septa per unit length of hypha compared with the wild type. Disruption of the pmt1 gene decreased protein secretion but had no effect on glycosylation of secreted proteins, which suggests that PMTI protein O-mannosyltranferase does not take part in glycosylation of these proteins.
Źródło:
Acta Biochimica Polonica; 2008, 55, 2; 251-259
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of recombinant Duffy protein-linked N-glycans using lectins and glycosidases
Autorzy:
Grodecka, Magdalena
Czerwiński, Marcin
Duk, Maria
Lisowska, Elwira
Waśniowska, Kazimiera
Powiązania:
https://bibliotekanauki.pl/articles/1040421.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Duffy antigen
chemokine receptor
chemokines
N-glycosylation
lectins
Opis:
Duffy antigen is a glycosylated blood group protein acting as a malarial and chemokine receptor. Using glycosylation mutants we have previously demonstrated, that all three potential glycosylation sites of the Duffy antigen are occupied by N-linked oligosaccharide chains. In this study, wild-type Duffy glycoprotein and three mutants, each containing a single N-glycan, were used to characterize the oligosaccharide chains by lectin blotting and endoglycosidase digestion. The positive reaction of all the recombinant Duffy forms with Datura stramonium and Sambucus nigra lectins showed that each Duffy N-linked glycan contains Galβ1-4GlcNAc units terminated by (α2-6)-linked sialic acid residues, typical of complex oligosaccharides. The reactivity with Aleuria aurantia and Lens culinaris lectins suggested the presence of (α1-6)-linked fucose at the N-glycan chitobiose core. The failure of the Galanthus nivalis and Canavalia ensiformis lectins to bind to any of the Duffy mutants or to the wild-type antigen indicated that none of the three Duffy N-glycosylation sites carries detectable levels of high-mannose oligosaccharide chains. Digestion of Duffy samples with peptide N-glycosidase F and endoglycosidase H confirmed the presence of N-linked complex oligosaccharides. Our results indicate that Duffy antigen N-glycans are mostly core-fucosylated complex type oligosaccharides rich in N-acetyllactosamine and terminated by (α2-6)-linked sialic acid residues.
Źródło:
Acta Biochimica Polonica; 2010, 57, 1; 49-53
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of individual azurocidin N-glycosylation sites in regard to its secretion by insect cells, susceptibility to proteolysis and antibacterial activity
Autorzy:
Indyk, Katarzyna
Olczak, Teresa
Ciuraszkiewicz, Justyna
Wątorek, Wiesław
Olczak, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1041040.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
glycosylation
protein secretion
azurocidin
antimicrobial activity
Opis:
Azurocidin is an inactive serine protease homolog with primary sequence similarity to neutrophil elastase, cathepsin G, and proteinase 3. The aim of this study was to investigate possible consequences of differential glycosylation of azurocidin in regard to its secretion, protein stability as measured by susceptibility to proteolysis, and antibacterial activity. Site-directed mutagenesis was employed to generate mutant azurocidin variants lacking individual N-glycosylation sites. Our results show that N-linked glycans may play a role in proper azurocidin folding and subsequent secretion by insect cells. We also demonstrate that N-linked glycosylation contributes to azurocidin stability by protecting it from proteolysis. The lack of N-glycosylation at individual sites does not significantly influence the azurocidin antibacterial activity.
Źródło:
Acta Biochimica Polonica; 2007, 54, 3; 567-573
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of α3β1 and αvβ3 integrin glycosylation on interaction of melanoma cells with vitronectin
Autorzy:
Janik, Marcelina
Przybyło, Małgorzata
Pocheć, Ewa
Pokrywka, Małgorzata
Lityńska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1040422.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
adhesion
integrin
glycosylation
migration
vitronectin
Opis:
The metastatic transformation of melanocytes is associated with altered expression of adhesion molecules, including αvβ3 and α3β1 integrins. Integrin αvβ3 is a primary vitronectin (VN) receptor, while both integrin types take part in adhesion to VN when they are in complex with uPAR. Although their role in melanoma cell interaction with VN is of great interest, the influence of N-oligosaccharides attached to these glycoproteins is still unappreciated. The present study assesses the role of αvβ3 and α3β1 integrins and the influence of their glycosylation status on WM9 and WM239 metastatic melanoma cell interactions with VN. Cell adhesion to and migration on VN were selected as the studied cell behaviour parameters. Functionblocking antibodies and swainsonine (SW) treatment were used in these tests. Both cell lines interacted with VN in an integrin-mediated but cell-line-specific manner. In WM9 cells, migration was not completely inhibited by antibodies against α3β1 or αvβ3 integrins, suggesting the participation of other VN receptors. In both cell lines in coprecipitation test the formation of an integrins/uPAR complex was shown. In the presence of SW formation of the complex did not occur, suggesting the participation of glycosylation in this proccess. Additionally, the adhesion properties of WM9 cells were changed after SW treatment. Our results suggest that in these two metastatic cell lines integrin-linked N-oligosaccharides influence the VN adhesion receptor activity and function.
Źródło:
Acta Biochimica Polonica; 2010, 57, 1; 55-61
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Faba bean albumins glycation
Autorzy:
Kostyra, H.
Darewicz, M.
Smyk, B.
Powiązania:
https://bibliotekanauki.pl/articles/1371479.pdf
Data publikacji:
1992
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
glycotransferase
food biotechnology
albumin
monosaccharide
protein
pepsin
trypsin
physiological condition
faba bean
enzymatic glycosylation
glycation
Źródło:
Polish Journal of Food and Nutrition Sciences; 1992, 01, 4; 121-126
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adhesive properties of carcinoembryonic antigen glycoforms expressed in glycosylation-deficient Chinese hamster ovary cell lines.
Autorzy:
Krop-Watorek, Anna
Klopocki, Arkadiusz
Czerwinski, Marcin
Lisowska, Elwira
Powiązania:
https://bibliotekanauki.pl/articles/1043841.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
solid-phase cell adhesion assay
N-glycoforms
carcinoembryonic antigen
glycosylation defective mutants
Opis:
Carcinoembryonic antigen (CEA) is an oncofoetal cell surface glycoprotein that serves as an important tumour marker for colorectal and some other carcinomas. Its immunoglobulin-like structure places CEA within the immunoglobulin superfamily. CEA functions in several biological roles including homotypic and heterotypic (with other CEA family members) cell adhesion. Cell-cell interaction can be modulated by different factors, e.g., post-translational modifications such as glycosylation. The purpose of this study was to examine whether changes in carbohydrate composition of CEA oligosaccharides can influence homotypic (CEA-CEA) interactions. In order to modulate glycosylation of CEA we used two different glycosylation mutants of Chinese hamster ovary (CHO) cells, Lec2 and Lec8. Lec2 cells should produce CEA with nonsialylated N-glycans, while Lec8 cells should yield more truncated sugar structures than Lec2. Parental CHO (Pro5) cells and the glycosylation deficient mutants were stably transfected with CEA cDNA. All three CEA glycoforms, tested in a solid-phase cell adhesion assay, showed an ability to mediate CEA-dependent cell adhesion, and no qualitative differences in the adhesion between the glycoforms were observed. Thus, it may be assumed that carbohydrates do not play a role in homotypic adhesion, and the interactions between CEA molecules depend solely on the polypeptide structure.
Źródło:
Acta Biochimica Polonica; 2002, 49, 1; 273-283
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alterations in protein secretion caused by metabolic engineering of glycosylation pathways in fungi
Autorzy:
Kruszewska, Joanna
Perlińska-Lenart, Urszula
Górka-Nieć, Wioletta
Orłowski, Jacek
Zembek, Patrycja
Palamarczyk, Grażyna
Powiązania:
https://bibliotekanauki.pl/articles/1040697.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
glycosylation
protein secretion
Trichoderma
Opis:
Due to its natural properties, Trichoderma reesei is commonly used in industry-scale production of secretory proteins. Since almost all secreted proteins are O-glycosylated, modulation of the activity of enzymes of the O-glycosylation pathway are likely to affect protein production and secretion or change the glycosylation pattern of the secreted proteins, altering their stability and biological activity. Understanding how the activation of different components of the O-glycosylation pathway influences the glycosylation pattern of proteins and their production and secretion could help in elucidating the mechanism of the regulation of these processes and should facilitate creation of engineered microorganisms producing high amounts of useful proteins. In this review we focus on data concerning Trichoderma, but also present some background information allowing comparison with other fungal species.
Źródło:
Acta Biochimica Polonica; 2008, 55, 3; 447-456
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on oligosaccharyl transferase in yeast
Autorzy:
Lennarz, William
Powiązania:
https://bibliotekanauki.pl/articles/1040850.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
oligosaccharyl transferase
protein glycosylation
yeast
Opis:
In yeast, OT consists of nine different subunits, all of which contain one or more predicted transmembrane segments. In yeast, five of these proteins are encoded by essential genes, Swp1p, Wbp1p, Ost2p, Ost1p and Stt3p. Four others are not essential Ost3p, Ost4p, Ost5p, Ost6p. All yeast OT subunits have been cloned and sequenced (Kelleher et al., 1992; 2003; Kelleher & Gilmore, 1997; Kumar et al., 1994; 1995; Breuer & Bause, 1995) and the structure of one of them, Ost4p, has been solved by NMR (Zubkov et al., 2004). Very recently, the preliminary crystal structure of the lumenal domain of an archaeal Stt3p homolog has been reported (Mayumi et al., 2007). Homologs of all OT subunits have been identified in higher eukaryotic organisms (Kelleher et al., 1992; 2003; Kumar et al., 1994; Kelleher & Gilmore, 1997).
Źródło:
Acta Biochimica Polonica; 2007, 54, 4; 673-677
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adhesion properties of human bladder cell lines with extracellular matrix components: the role of integrins and glycosylation.
Autorzy:
Lityńska, Anna
Przybyło, Małgorzata
Pocheć, Ewa
Laidler, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1043727.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
glycosylation
integrins
bladder cell lines
adhesion
Opis:
Integrin subunits present on human bladder cells displayed heterogeneous functional specificity in adhesion to extracellular matrix proteins (ECM). The non-malignant cell line (HCV29) showed significantly higher adhesion efficiency to collagen IV, laminin (LN) and fibronectin (FN) than cancer (T24, Hu456) and v-raf transfected (BC3726) cell lines. Specific antibodies to the α2, a5 and β1 integrin subunits inhibited adhesion of the non-malignant cells, indicating these integrin participation in the adhesion to ECM proteins. In contrast, adhesion of cancer cells was not inhibited by specific antibodies to the β1 integrin subunit. Antibodies to α3 integrin increased adhesion of cancer cells to collagen, LN and FN, but also of the HCV29 line with colagen. It seems that α3 subunit plays a major role in modulation of other integrin receptors especially in cancer cells. Differences in adhesion to ECM proteins between the non-malignant and cancer cell lines in response to Gal and Fuc were not evident, except for the v-raf transfected cell line which showed a distinct about 6-fold increased adhesion to LN on addition of both saccharides. N-Acetylneuraminic acid inhibited adhesion of all cell lines to LN and FN irrespective of their malignancy.
Źródło:
Acta Biochimica Polonica; 2002, 49, 3; 643-650
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure of the oligosaccharides of α3β1 integrin from human ureter epithelium (HCV29) cell line.
Autorzy:
Lityńska, Anna
Pocheć, Ewa
Hoja-Łukowicz, Dorota
Kremser, Elżbieta
Laidler, Piotr
Amoresano, Angela
Monti, Chiara
Powiązania:
https://bibliotekanauki.pl/articles/1043787.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
glycosylation
α3β1 integrin
cell line
MALDI MS
Opis:
There is a growing line of evidence that glycosylation of α and β subunits is important for the function of integrins. Integrin α3β1, from human ureter epithelium cell - line HCV29, was isolated by affinity chromatography on laminin GD6 peptide. Characterization of its carbohydrate moieties was carried out using sodium dodecyl sulfate/polyacrylamide gel electrophoresis followed by Western blotting on Immobilon P and on-blot deglycosylation with peptide N-glycosidase-F. Profiles of N-glycans for each subunit were obtained by matrix-assisted laser desorption/ionization mass spectrometry. Our findings demonstrated, in both subunits of integrin α3β1, the presence of complex type oligosaccharides with a wide heterogeneity. Bi- tri- and tetraantennary structures were the most common, while high-mannose type structures were minor. Also the presence of short poly-N-acetyllactosamine entities was shown. These results show that while the predominant oligosaccharides of both subunits are identical, some slight differences between them do exist.
Źródło:
Acta Biochimica Polonica; 2002, 49, 2; 491-500
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł

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