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001-es BibID:BIBFORM058666
Első szerző:Bacskai Ildikó (immunológus)
Cím:Mesenchymal stromal cell-like cells set the balance of stimulatory and inhibitory signals in monocyte-derived dendritic cells / Ildikó Bacskai, Anett Mázló, Katalin Kis-Tóth, Attila Szabó, György Panyi, Balázs Sarkadi, Ágota Apáti, Éva Rajnavölgyi
Dátum:2015
ISSN:1547-3287
Megjegyzések:The major reservoir of human multipotent mesenchymal stem/stromal cells (MSC) is the bone marrow (BM) with the capability to control hematopoietic stem cell (HSC) development. The regenerative potential of MSC is associated with enhanced endogenous repair and healing mechanisms that modulate inflammatory responses. Our previous results revealed that MSC-like (MSCl) cells derived from pluripotent human embryonic stem cells resemble BM-derived MSC in morphology, phenotype and differentiating potential. Here we investigated the effects of MSCl cells on the phenotype and functions of dendritic cells (DC). To assess how anti-viral immune responses could be regulated by intracellular pattern recognition receptors (PRR) of DC in the presence of MSCl cells we activated DC with the specific ligands of retinoic acid-inducible gene I (RIG-I) helicases and found that activated DC co-cultured with MSCl cells exhibited reduced expression of CD1a and CD83 cell surface molecules serving as phenotypic indicators of DC differentiation and activation, respectively. However, RIG-I-mediated stimulation of DC via specific ligands in the presence of MSCl cells resulted in significantly higher expression of the co-stimulatory molecules CD80 and CD86 than in the presence of BM-MSC. In line with these results the concentration of IL-6, IL-10 and CXCL8 was increased in the supernatant of the DC-MSCl co-cultures, while the secretion of TNF-?, CXCL10, IL-12 and IFN? was reduced. Furthermore, the concerted action of mechanisms involved in the regulation of DC migration resulted in the blockade of cell migration indicating altered DC functionality mediated by MSCl cell-derived signals and mechanisms resulting in a suppressive microenvironment.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
mesenchymal stromal cell
dendritic cell
immunsuppression
RIG-like receptors
matrix metalloproteinases
Megjelenés:Stem Cells And Development. - 24 : 15 (2015), p. 1805-1816. -
További szerzők:Türk-Mázló Anett (1989-) (molekuláris biológus) Kis-Tóth Katalin (1975-) (immunológus) Szabó Attila (1981-) (molekuláris biológus, immunológus, filozófus) Panyi György (1966-) (biofizikus) Sarkadi Balázs Apáti Ágota Rajnavölgyi Éva (1950-) (immunológus)
Pályázati támogatás:TÁMOP 4.2.4. A/2-11-1-2012-0001
TÁMOP
TÁMOP 4.2.2.A-11/1/KONV-2012-0023
TÁMOP
OTKA NK 101538
OTKA
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2.

001-es BibID:BIBFORM040245
035-os BibID:PMID:17055487
Első szerző:Müller Marianna
Cím:Co-expression of human ABCG5 and ABCG8 in insect cells generates an androstan stimulated membrane ATPase activity / Marianna Müller, Izabella Klein, Szilárd Kopácsi, Alan T. Remaley, Éva Rajnavölgyi, Balázs Sarkadi, András Váradi
Dátum:2006
ISSN:0014-5793
Megjegyzések:Mutations in the ATP-binding cassette (ABC) proteins ABCG5 or ABCG8 cause sitosterolemia, a condition with increased accumulation of plant sterols. Upon high level expression of the ABCG5 and ABCG8 proteins in baculovirus-Sf9 cell expression system we found a distinct, vanadate sensitive ATPase activity in isolated membrane preparations only when the two proteins were co-expressed. This ATPase activity was significantly stimulated by the addition of certain androgen hormones and analogs, and was effectively inhibited by progesterone. Our results provide a new aspect of biochemical and functional characterization of the ABCG5/ABCG8 proteins and their possible involvement in steroid hormone transport or regulation.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
egyetemen (Magyarországon) készült közlemény
Megjelenés:FEBS Letters. - 580 : 26 (2006), p. 6139-6144. -
További szerzők:Klein Izabella Kopácsi Szilárd Remaley, Alan T. Sarkadi Balázs Váradi András Rajnavölgyi Éva (1950-) (immunológus)
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3.

001-es BibID:BIBFORM020779
Első szerző:Varga Nóra
Cím:Mesenchymal stem cell like (MSCl) cells generated from human embryonic stem cells support pluripotent cell growth. / Nóra Varga, Zoltán Veréb, Éva Rajnavölgyi, Katalin Német, Ferenc Uher, Balázs Sarkadi, Ágota Apáti
Dátum:2011
Megjegyzések:Mesenchymal stem cell like (MSCl) cells were generated from human embryonic stem cells (hESC) through embryoid body formation, and isolated by adherence to plastic surface. MSCl cell lines could be propagated without changes in morphological or functional characteristics for more than 15 passages. These cells, as well as their fluorescent protein expressing stable derivatives, efficiently supported the growth of undifferentiated human embryonic stem cells as feeder cells. The MSCl cells did not express the embryonic (Oct4, Nanog, ABCG2, PODXL, or SSEA4), or hematopoietic (CD34, CD45, CD14, CD133, HLA-DR) stem cell markers, while were positive for the characteristic cell surface markers of MSCs (CD44, CD73, CD90, CD105). MSCl cells could be differentiated toward osteogenic, chondrogenic or adipogenic directions and exhibited significant inhibition of mitogen-activated lymphocyte proliferation, and thus presented immunosuppressive features. We suggest that cultured MSCl cells can properly model human MSCs and be applied as efficient feeders in hESC cultures.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Biochemical and Biophysical Research Communications. - 414 : 3 (2011), p. 474-480. -
További szerzők:Veréb Zoltán (1980-) (immunológus, mikrobiológus, molekuláris biológus) Rajnavölgyi Éva (1950-) (immunológus) Német Katalin Uher Ferenc Sarkadi Balázs Apáti Ágota
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