Találati lista | Tudóstér

001-es BibID:	BIBFORM060767
Első szerző:	Nemes Z.
Cím:	Expression and activation of tissue transglutaminase in apoptotic cells of involuting rodent mammary tissue / Z. Nemes, R. R. Friis, D. Aeschlimann, S. Saurer, M. Paulsson, L. Fésüs
Dátum:	1996
ISSN:	0171-9335
Megjegyzések:	Apoptosis is a form of cell death in which cellular integrity is maintained and neither cytoplasmic nor nuclear content is released. The Ca(2+)-dependent tissue transglutaminase (tTG) is an enzyme that forms protein cross-links between specific glutamyl and lysyl side-chains of intra- and extracellular proteins, therefore it may be responsible for the structural stabilization observed during the death process. In this study, the expression of tTG was investigated following the physiological process of forced weaning which results in an almost complete elimination of secretory epithelium by apoptosis and remodelling of the tissue structure. A dramatic induction of tTG was detected by immunoblotting of total mammary gland homogenates prepared from the involuting glands. The concentration of epsilon(gamma-glutamyl)-lysine crosslinks was also elevated in these samples, showing that the enzyme is activated during apoptosis. To determine the distribution of tTG and its relationship to apoptotic cells, paraffin-embedded specimens were studied by RNA in situ hybridization and immunohistochemical methods as well as using in situ labeling for nuclear fragmentation. All of these approaches indicated that mammary secretory epithelium expressed tissue transglutaminase coincident with the onset of apoptosis. The apoptotic and tTG-expressing cells were found to be identical as demonstrated by a histological double-labeling technique.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	European Journal of Cell Biology 70 : 2 (1996), p. 125-133. -
További szerzők:	Friis, Bob R. R. Aeschlimann, Daniel Saurer, S. Paulsson, M. Fésüs László (1947-) (orvos biokémikus)
Borító:
Saját polcon:

001-es BibID:	BIBFORM014101
Első szerző:	Szondy Zsuzsanna (molekuláris sejtbiológus, biokémikus)
Cím:	Transglutaminase 2-/- mice reveal a phagocytosis-associated crosstalk between macrophages and apoptotic cells / Zsuzsa Szondy, Zsolt Sarang, Péter Molnár, Tamás Németh, Mauro Piacentini, Pier Giorgio Mastroberardino, Laura Falasca, Daniel Aeschlimann, Judit Kovács, Ildikó Kiss, Éva Szegezdi, Gabriella Lakos, Éva Rajnavölgyi , Paul J. Birckbichler, Gerry Melino, László Fésüs
Dátum:	2003
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Proceedings of the National Academy of Sciences of the United States of America. - 100 : 13 (2003), p. 7812-7817. -
További szerzők:	Sarang Zsolt (1976-) (mikrobiológus) Molnár Péter Pál (1951-) (pathológus) Németh Tamás (patológus) Piacentini, Mauro Mastroberardino, Pier Giorgio Falasca, Laura Aeschlimann, Daniel Kovács Judit (patológus) Kiss Ildikó Szegezdi Éva Lakos Gabriella (1963-) (laboratóriumi szakorvos, transzfúziológus, immunológus) Rajnavölgyi Éva (1950-) (immunológus) Birckbichler, Paul J. Melino, Gerry Fésüs László (1947-) (orvos biokémikus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
Borító:
Saját polcon:

001-es BibID:	BIBFORM008295
Első szerző:	Tóth Beáta
Cím:	Transglutaminase 2 is needed for the formation of an efficient phagocyte portal in macrophages engulfing apoptotic cells / Beáta Tóth, Éva Garabuczi, Zsolt Sarang, György Vereb, György Vámosi, Daniel Aeschlimann, Bernadett Blaskó, Bálint Bécsi, Ferenc Erdődi, Adam Lacy-Hulbert, Ailiang Zhang, Laura Falsca, Raymond B. Birge, Zoltán Balajthy, Gerry Melino, László Fésüs, Zsuzsa Szondy
Dátum:	2009
Megjegyzések:	Transglutaminase 2 (TG2), a protein cross-linking enzyme with many additional biological functions, acts as coreceptor for integrin beta3. We have previously shown that TG2-/- mice develop an age-dependent autoimmunity due to defective in vivo clearance of apoptotic cells. Here we report that TG2 on the cell surface and in guanine nucleotide-bound form promotes phagocytosis. Besides being a binding partner for integrin beta3, a receptor known to mediate the uptake of apoptotic cells via activating Rac1, we also show that TG2 binds MFG-E8 (milk fat globulin EGF factor 8), a protein known to bridge integrin beta3 to apoptotic cells. Finally, we report that in wild-type macrophages one or two engulfing portals are formed during phagocytosis of apoptotic cells that are characterized by accumulation of integrin beta3 and Rac1. In the absence of TG2, integrin beta3 cannot properly recognize the apoptotic cells, is not accumulated in the phagocytic cup, and its signaling is impaired. As a result, the formation of the engulfing portals, as well as the portals formed, is much less efficient. We propose that TG2 has a novel function to stabilize efficient phagocytic portals.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	The Journal of Immunology 182 : 4 (2009), p. 2084-2092. -
További szerzők:	Garabuczi Éva (1982-) (biokémikus, molekuláris biológus) Sarang Zsolt (1976-) (mikrobiológus) Vereb György (1965-) (biofizikus, orvos) Vámosi György (1967-) (biofizikus) Aeschlimann, Daniel Blaskó Bernadett Bécsi Bálint (1981-) (vegyészmérnök) Erdődi Ferenc (1953-) (biokémikus) Lacy-Hulbert, Adam Zhang, Ailiang Falsca, Laura Birge, Raymond B. Balajthy Zoltán (1957-) (biokémikus, sejtbiológus) Melino, Gerry Fésüs László (1947-) (orvos biokémikus) Szondy Zsuzsanna (1959-) (molekuláris sejtbiológus, biokémikus)
Internet cím:	elektronikus változat DOI
Borító:
Saját polcon: