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001-es BibID:	BIBFORM048561
Első szerző:	Antonella Nadalutti, Cristina
Cím:	Thioredoxin Is Involved in Endothelial Cell Extracellular Transglutaminase 2 Activation Mediated by Celiac Disease Patient IgA / Cristina Antonella Nadalutti, Ilma Rita Korponay-Szabo, Katri Kaukinen, Zhuo Wang, Martin Griffin, Markku Mäki, Katri Lindfors
Dátum:	2013
ISSN:	1932-6203
Megjegyzések:	PURPOSE:To investigate the role of thioredoxin (TRX), a novel regulator of extracellular transglutaminase 2 (TG2), in celiac patients IgA (CD IgA) mediated TG2 enzymatic activation.METHODS:TG2 enzymatic activity was evaluated in endothelial cells (HUVECs) under different experimental conditions by ELISA and Western blotting. Extracellular TG2 expression was studied by ELISA and immunofluorescence. TRX was analysed by Western blotting and ELISA. Serum immunoglobulins class A from healthy subjects (H IgA) were used as controls. Extracellular TG2 enzymatic activity was inhibited by R281. PX12, a TRX inhibitor, was also employed in the present study.RESULTS:We have found that in HUVECs CD IgA is able to induce the activation of extracellular TG2 in a dose-dependent manner. Particularly, we noted that the extracellular modulation of TG2 activity mediated by CD IgA occurred only under reducing conditions, also needed to maintain antibody binding. Furthermore, CD IgA-treated HUVECs were characterized by a slightly augmented TG2 surface expression which was independent from extracellular TG2 activation. We also observed that HUVECs cultured in the presence of CD IgA evinced decreased TRX surface expression, coupled with increased secretion of the protein into the culture medium. Intriguingly, inhibition of TRX after CD IgA treatment was able to overcome most of the CD IgA-mediated effects including the TG2 extracellular transamidase activity.CONCLUSIONS:Altogether our findings suggest that in endothelial cells CD IgA mediate the constitutive activation of extracellular TG2 by a mechanism involving the redox sensor protein TRX.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban Thioredoxin IgA TG2
Megjelenés:	Plos One. - 8 : 10 (2013), p. e77277. -
További szerzők:	Korponay-Szabó Ilma (1959-) (gyermekgyógyász) Kaukinen, Katri Wang, Zhuo Griffin, Martin Mäki, Markku Lindfors, Katri
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM077371
035-os BibID:	(cikkazonosító)e0197713 (WOS)000433900800036 (Scopus)85048036551
Első szerző:	Hellmuth, Christian
Cím:	The impact of human breast milk components on the infant metabolism / Hellmuth Christian, Uhl Olaf, Demmelmair Hans, Grunewald Maria, Auricchio Renata, Castillejo Gemma, Korponay-Szabo Ilma R., Polanco Isabel, Roca María, Vriezinga Sabine L., Werkstetter Katharina J., Koletzko Berthold, Mearin M. Luisa, Kirchberg Franca F.
Dátum:	2018
ISSN:	1932-6203
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Plos One. - 13 : 6 (2018), p. 1-19. -
További szerzők:	Uhl, Olaf Demmelmair, Hans Grunewald, Maria Auricchio, Renata Castillejo, Gemma (gyermekgyógyász, gasztroenterológus) Korponay-Szabó Ilma (1959-) (gyermekgyógyász) Polanco, Isabel Roca, María Vriezinga, Sabine Lisa (gyermekgyógyász) Werkstetter, Katharina (gyermekgyógyász, gasztroenterológus) Koletzko, Berthold Mearin, Maria Luisa Kirchberg, Franca F.
Pályázati támogatás:	A101788 OTKA TAMOP 2.2.11/1/KONV-2012-0023 TÁMOP NKFI120392 NKFIH
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM048568
035-os BibID:	Article ID: e65887
Első szerző:	Kalliokoski, Suvi
Cím:	Celiac Disease-Specific TG2-Targeted Autoantibodies Inhibit Angiogenesis Ex Vivo and In Vivo in Mice by Interfering with Endothelial Cell Dynamics / Suvi Kalliokoski, Ana-Marija Sulic, Ilma R. Korponay-Szabo, Zsuzsa Szondy, Rafael Frias, Mileidys Alea Perez, Stefania Martucciello, Anne Roivainen, Lauri J. Pelliniemi, Carla Esposito, Martin Griffin, Daniele Sblattero, Markku Mäki, Katri Kaukinen, Katri Lindfors, Sergio Caja
Dátum:	2013
ISSN:	1932-6203
Megjegyzések:	A characteristic feature of celiac disease is the presence of circulating autoantibodies targeted against transglutaminase 2 (TG2), reputed to have a function in angiogenesis. In this study we investigated whether TG2-specific autoantibodies derived from celiac patients inhibit angiogenesis in both ex vivo and in vivo models and sought to clarify the mechanism behind this phenomenon. We used the ex vivo murine aorta-ring and the in vivo mouse matrigel-plug assays to address aforementioned issues. We found angiogenesis to be impaired as a result of celiac disease antibody supplementation in both systems. Our results also showed the dynamics of endothelial cells was affected in the presence of celiac antibodies. In the in vivo angiogenesis assays, the vessels formed were able to transport blood despite impairment of functionality after treatment with celiac autoantibodies, as revealed by positron emission tomography. We conclude that celiac autoantibodies inhibit angiogenesis ex vivo and in vivo and impair vascular functionality. Our data suggest that the anti-angiogenic mechanism of the celiac disease-specific autoantibodies involves extracellular TG2 and inhibited endothelial cell mobility.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Plos One [electronic resource]. - 8 : 6 (2013), [8] p. -
További szerzők:	Sulic, Ana-Marija Korponay-Szabó Ilma (1959-) (gyermekgyógyász) Szondy Zsuzsanna (1959-) (molekuláris sejtbiológus, biokémikus) Frías, Rafael Perez, Mileidys Alea Martucciello, Stefania Roivainen, Anne Pelliniemi, Lauri J. Esposito, Carla Griffin, Martin Sblattero, Daniele Mäki, Markku Kaukinen, Katri Lindfors, Katri Caja, Sergio
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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