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1.

001-es BibID:BIBFORM001478
Első szerző:Bai Péter (biokémikus)
Cím:Poly(ADP-ribose) polymerase-2 controls adipocyte differentiation and adipose tissue function through the regulation of the activity of the retinoid X receptor/peroxisome proliferator-activated receptor-gamma heterodimer / Bai P., Houten S. M., Huber A., Schreiber V., Watanabe M., Kiss B., de Murcia G., Auwerx J., Ménissier-de Murcia J.
Dátum:2007
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:The Journal of Biological Chemistry. - 282 : 52 (2007), p. 37738-37746. -
További szerzők:Houten, Sander M. Huber, Aline Schreiber, Valérie Watanabe, Mitsuhiro Kiss Borbála Katalin (1977-) (bőrgyógyász, onkológus) de Murcia, Gilbert Auwerx, Johan Menissier-de Murcia, Josiane
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2.

001-es BibID:BIBFORM014055
Első szerző:Benkő Szilvia (molekuláris biológus)
Cím:Molecular determinants of the balance between co-repressor and co-activator recruitment to the retinoic acid receptor / Szilvia Benko, James D. Love, Marta Beladi, John W. R. Schwabe, Laszlo Nagy
Dátum:2003
ISSN:0021-9258
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:The Journal of Biological Chemistry. - 278 : 44 (2003), p. 43797-43806. -
További szerzők:Love, James D. Beládi Márta Schwabe, John W. R. Nagy László (1966-) (molekuláris sejtbiológus, biokémikus)
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elektronikus változat
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3.

001-es BibID:BIBFORM005675
Első szerző:Benkő Szilvia (molekuláris biológus)
Cím:Dendritic cell subtypes as primary targets of vaccines : the emerging role and cross-talk of pattern recognition receptors / Szilvia Benko, Zoltan Magyarics, Attila Szabo, Eva Rajnavolgyi
Dátum:2008
ISSN:1437-4315
Megjegyzések:Preventive vaccination is the most successful approach against infectious diseases and has a great impact on world health. Vaccines operate through the activation of innate immunity that helps to stimulate antigen-specific T- and B-lymphocytes. These events are orchestrated by dendritic cells (DCs) that are able to sample foreign structures and concomitantly sense 'danger signals'. Thus, DCs provide a functional link between innate and acquired immunity, and due to their regulatory potential are referred to as natural adjuvants. Human conventional and plasmacytoid DCs express different sets of well-characterized Toll-like membrane receptors (TLRs) that recognize a broad range of conserved molecular patterns of pathogens. The recently discovered cytosolic Nod-like receptors (NLRs) and RIG-like helicases (RLHs) also turned out to participate in pathogen recognition and modulation of immune responses through interacting signaling pathways. As a result of their collaboration, the TLR, NLR and RLH recognition systems induce the secretion of different combinations of cytokines that play a fundamental role in T-cell activation and instruction. Ligands of the innate recognition systems emerge as new adjuvants for vaccine design, whereas manipulation of the signaling pathways mediated by these receptors offers new avenues for fine tuning immune responses and optimizing immunotherapies.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
cross-priming
cytokines
immunomodulation
innate immunity
signaling
T-cell polarization
Megjelenés:Biological Chemistry. - 389 : 5 (2008), p. 469-485. -
További szerzők:Magyarics Zoltán (1982-) (immunológus) Szabó Attila (1981-) (molekuláris biológus, immunológus, filozófus) Rajnavölgyi Éva (1950-) (immunológus)
Internet cím:elektronikus változat
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elektronikus változat
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4.

001-es BibID:BIBFORM018870
Első szerző:Bodoor, Khaldon
Cím:Smoothelin-like 1 protein is a bifunctional regulator of the progesterone receptor during pregnancy / Khaldon Bodoor, Beata Lontay, Rachid Safi, Douglas Weitzel, David Loiselle, Zhengzheng Wei, Szabolcs Lengyel, Donald McDonnell, Timothy A. Haystead
Dátum:2011
ISSN:0021-9258
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal of biological chemistry 286 : 36 (2011), p. 31839-31851. -
További szerzők:Lontay Beáta (1975-) (biokémikus) Safi, Rachid Weitzel, Douglas H. Loiselle, David Wei, Zhengzheng Lengyel Szabolcs (1971-) (biológus) McDonnell, Donald Haystead, Timothy A. J.
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5.

001-es BibID:BIBFORM036713
Első szerző:Bögel Gábor
Cím:Frank-ter Haar syndrome protein Tks4 regulates EGF-dependent cell migration / Gábor Böge, Annamária Gujdár, Miklós Geiszt, Árpád Lányi, Anna Fekete, Szabolcs Sipeki, Julian Downward, László Buday
Dátum:2012
ISSN:0021-9258
Megjegyzések:Mutations in the SH3PXD2B gene coding for the Tks4 protein are responsible for the autosomal-recessive Frank-ter Haar syndrome. Tks4, a substrate of Src tyrosine kinase is implicated in the regulation of podosome formation. Here, we report a novel role for Tks4 in the EGF signalling pathway. In EGF-treated cells, Tks4 is tyrosine phosphorylated and associated with the activated EGF receptor. This association is not direct but requires the presence of Src tyrosine kinase. In addition, treatment of cells with LY294002, an inhibitor of PI 3-kinase, or mutations of the PX domain reduces tyrosine phosphorylation and membrane translocation of Tks4. Furthermore, a PX domain mutant (R43W) Tks4 carrying a reported point mutation in a Frank-ter Haar syndrome patient showed aberrant intracellular expression and reduced phosphoinositide binding. Finally, silencing of Tks4 was shown to markedly inhibit HeLa cell migration in a Boyden chamber assay in response to EGF or serum. Our results therefore reveal a new function for Tks4 in the regulation of growth factor-dependent cell migration.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
EGF receptor
Tks4
cell migration
Frank-ter Haar syndrome
PX domain
Molekuláris Medicina
Megjelenés:Journal Of Biological Chemistry. - 287 : 37 (2012), p. 31321-31329. -
További szerzők:Gujdár Annamária Geiszt Miklós Lányi Árpád (1962-) (biológus, immunológus) Fekete Anna Sipeki Szabolcs Downward, Julian Buday László
Pályázati támogatás:TÁMOP-4.2.1/B-09/1/KONV-2010-0007
TÁMOP
A HOFI/SH3PXD2B aktin citoszkeletont szabályozó új adaptor fehérje funkcionális vizsgálata
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6.

001-es BibID:BIBFORM041839
Első szerző:Boldogh István
Cím:Activation of ras signaling pathway by 8-oxoguanine DNA glycosylase bound to its excision product, 8-oxoguanine / Istvan Boldogh, Gyorgy Hajas, Leopoldo Aguilera-Aguirre, Muralidhar L. Hegde, Zsolt Radak, Attila Bacsi, Sanjiv Sur, Tapas K. Hazra, Sankar Mitra
Dátum:2012
ISSN:0021-9258
Megjegyzések:8-Oxo-7,8-dihydroguanine (8-oxoG), arguably the most abundant base lesion induced in mammalian genomes by reactive oxygen species, is repaired via the base excision repair pathway that is initiated with the excision of 8-oxoG by OGG1. Here we show that OGG1 binds the 8-oxoG base with high affinity and that the complex then interacts with canonical Ras family GTPases to catalyze replacement of GDP with GTP, thus serving as a guanine nuclear exchange factor. OGG1-mediated activation of Ras leads to phosphorylation of the mitogen-activated kinases MEK1,2/ERK1,2 and increasing downstream gene expression. These studies document for the first time that in addition to its role in repairing oxidized purines, OGG1 has an independent guanine nuclear exchange factor activity when bound to 8-oxoG.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal of Biological Chemistry 287 : 25 (2012), p. 20769-20773. -
További szerzők:Hajas György (1970-) (biológus) Aguilera-Aguirre, Leopoldo Hegde, Muralidhar L. Radák Zsolt Bácsi Attila (1967-) (immunológus) Sur, Sanjiv Hazra, Tapas K. Mitra, Sankar
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7.

001-es BibID:BIBFORM004658
Első szerző:Burgess, Janette K.
Cím:Physical proximity and functional association of glycoprotein 1balpha and protein-disulfide isomerase on the platelet plasma membrane / Burgess, J. K., Hotchkiss, K. A., Suter, C., Dudman, N. P., Szollosi, J., Chesterman, C. N., Chong, B. H., Hogg, P. J.
Dátum:2000
Megjegyzések:Platelet function is influenced by the platelet thiol-disulfide balance. Platelet activation resulted in 440% increase in surface protein thiol groups. Two proteins that presented free thiol(s) on the activated platelet surface were protein-disulfide isomerase (PDI) and glycoprotein 1balpha (GP1balpha). PDI contains two active site dithiols/disulfides. The active sites of 26% of the PDI on resting platelets was in the dithiol form, compared with 81% in the dithiol form on activated platelets. Similarly, GP1balpha presented one or more free thiols on the activated platelet surface but not on resting platelets. Anti-PDI antibodies increased the dissociation constant for binding of vWF to platelets by approximately 50% and PDI and GP1balpha were sufficiently close on the platelet surface to allow fluorescence resonance energy transfer between chromophores attached to PDI and GP1balpha. Incubation of resting platelets with anti-PDI antibodies followed by activation with thrombin enhanced labeling and binding of monoclonal antibodies to the N-terminal region of GP1balpha on the activated platelet surface. These observations indicated that platelet activation triggered reduction of the active site disulfides of PDI and a conformational change in GP1balpha that resulted in exposure of a free thiol(s).
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Antibodies
blood
Blood Platelets
Cell Membrane
chemistry
Disulfides
Energy Transfer
enzymology
Fluorescence
Glycoproteins
Human
immunology
Membrane Glycoproteins
metabolism
Molecular Weight
pathology
Platelet Activation
Platelet Aggregation
Platelet Membrane Glycoproteins
Protein Disulfide-Isomerase
Proteins
Research
Sulfhydryl Compounds
Support, Non-U.S.Gov't
Thrombin
von Willebrand Factor
Megjelenés:The Journal of Biological Chemistry. - 275 : 13 (2000), p. 9758-9766. -
További szerzők:Hotchkiss, Kylie A. Suter, Catherine Dudman, Nicholas P. B. Szöllősi János (1953-) (biofizikus) Chesterman, Colin N. Chong, Beng H. Hogg, Philip J.
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8.

001-es BibID:BIBFORM004333
Első szerző:Choi, Sung Hee
Cím:Characterization of the interaction of phorbol esters with the C1 domain of MRCK (myotonic dystrophy kinase-related Cdc42 binding kinase) alpha/beta / Choi S. H., Czifra G., Kedei N., Lewin N. E., Lázár J., Pu Y., Marquez V. E., Blumberg P. M.
Dátum:2008
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:The Journal of Biological Chemistry 283 : 16 (2008), p. 10543-10549. -
További szerzők:Czifra Gabriella (1975-) (élettanász) Kedei Noémi Lewin, Nancy E. Lázár József Pu, Yongmei Marquez, Victor E. Blumberg, Peter M.
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9.

001-es BibID:BIBFORM095956
035-os BibID:(Scopus)85113278549 (cikkazonosító)101015 (WOS)000706408900003 (PubMed)34329682
Első szerző:Diszházi Gyula (gyógyszerész)
Cím:TRPM4 links calcium signaling to membrane potential in pancreatic acinar cells / Gyula Diszházi, Zsuzsanna É. Magyar, Erika Lisztes, Edit Tóth-Molnár, Péter P. Nánási, Rudi Vennekens, Balázs I. Tóth, János Almássy
Dátum:2021
ISSN:0021-9258 1083-351X
Megjegyzések:TRPM4 is a Ca2+-activated nonselective cation channel that mediates membrane depolarization. Although, a current with the hallmarks of a TRPM4-mediated current has been previously reported in pancreatic acinar cells (PAC), the role of TRPM4 in the regulation of acinar cell function has not yet been explored. In the present study, we identify this TRPM4 current and describe its role in context of Ca2+ signaling of PACs using pharmacological tools and TRPM4-deficient mice. We found a significant Ca2+-activated cation current in PACs that was sensitive to the TRPM4 inhibitors 9-phenanthrol and CBA (4-Chloro-2-[[2-(2-chlorophenoxy)acetyl]amino]benzoic acid). We demonstrated that the CBA-sensitive current was responsible for a Ca2+-dependent depolarization of PACs from a resting membrane potential of -44.4 ? 2.9 to -27.7 ? 3 mV. Furthermore, we showed that Ca2+ influx was higher in the TRPM4 KO- and CBA-treated PACs than in control cells. As hormone induced repetitive Ca2+ transients partially rely on Ca2+ influx in PACs, the role of TRPM4 was also assessed on Ca2+ oscillations elicited by physiologically relevant concentrations of the cholecystokinin analogue cerulein. These data show that the amplitude of Ca2+ signals were significantly higher in TRPM4 KO than in control PACs. Our results suggest that PACs are depolarized by TRPM4 currents to an extent that results in a significant reduction of the inward driving force for Ca2+. In conclusion, TRPM4 links intracellular Ca2+ signaling to membrane potential as a negative feedback regulator of Ca2+ entry in PACs.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
pancreatic acinar cells
calcium signaling
ion channels
Megjelenés:Journal of Biological Chemistry. - 297 : 3 (2021), p. 101015. -
További szerzők:Magyar Zsuzsanna Édua (1993-) (molekuláris biológus) Lisztes Erika (1986-) (élettanász) Tóth-Molnár Edit Nánási Péter Pál (1956-) (élettanász) Vennekens, Rudi Tóth István Balázs (1978-) (élettanász) Almássy János (1981-) (élettanász, biológus, angol-magyar szakfordító)
Pályázati támogatás:FK_135130
OTKA
FK_134725
OTKA
GINOP-2.3.2-15-2016-00040
GINOP
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10.

001-es BibID:BIBFORM004705
035-os BibID:(scopus)18544371851 (wos)000173421300040
Első szerző:Dornan, Saffron
Cím:Differential association of CD45 isoforms with CD4 and CD8 regulates the actions of specific pools of p56lck tyrosine kinase in T cell antigen receptor signal transduction / Dornan, S., Sebestyen, Z., Gamble, J., Nagy, P., Bodnar, A., Alldridge, L., Doe, S., Holmes, N., Goff, L. K., Beverley, P., Szollosi, J., Alexander, D. R.
Dátum:2002
Megjegyzések:An investigation into the role of CD45 isoforms in T cell antigen receptor signal transduction was carried out by transfecting CD45-negative CD4(+)CD8(+) HPB-ALL T cells with the CD45R0, CD45RBC, and CD45RABC isoforms. Fluorescence resonance energy transfer analysis showed that the CD45R0 isoform, but not the CD45RBC or CD45RABC isoforms, was found as homodimers and also preferentially associated with CD4 and CD8 at the cell-surface. A comparison was therefore made of T cell antigen receptor signaling between sub-clones expressing either CD45R0 or CD45RBC. Under basal conditions CD4-associated p56(lck) tyrosine kinase activity and cellular protein tyrosine phosphorylation levels were higher in the CD45R0(+) than in the CD45RBC(+) sub-clones. Upon CD3-CD4 ligation, TCR-zeta phosphorylation, ZAP-70 recruitment to the p21/p23 TCR-zeta phosphoisomers, ZAP-70 phosphorylation, as well as p56(lck), c-Cbl and Slp-76 phosphorylation, were all markedly increased in CD45R0(+) compared with CD45RBC(+) cells. T cell antigen receptor (TCR) stimulation alone also promoted c-Cbl phosphorylation in CD45R0(+) but not in CD45RBC(+) cells. Our results are consistent with a model in which association of CD45R0 with CD4 generates a more active pool of CD4-associated p56(lck) kinase molecules. Upon CD3-CD4 co-ligation, the active p56(lck) increases the intensity of T cell antigen receptor signal transduction coupling by promoting TCR-zeta chain phosphorylation and ZAP-70 recruitment.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
analysis
Antigens,CD4
Antigens,CD45
Antigens,CD8
Energy Transfer
Fluorescence
Human
immunology
Lymphocyte Specific Protein Tyrosine Kinase p56(lck)
metabolism
Phosphorylation
Receptors,Antigen,T-Cell
Signal Transduction
Support,Non-U.S.Gov't
Megjelenés:The Journal of Biological Chemistry. - 277 : 3 (2002), p. 1912-1918. -
További szerzők:Sebestyén Zsolt Gamble, John Nagy Péter (1971-) (biofizikus) Dóczy-Bodnár Andrea (1970-) (biofizikus) Alldridge, Lou Doe, Senam Holmes, Nick Goff, Lindsey K. Beverley, Peter Szöllősi János (1953-) (biofizikus) Alexander, Denis R.
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elektronikus változat
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11.

001-es BibID:BIBFORM019815
Első szerző:Eckhardt, Erik R. M.
Cím:High density lipoprotein endocytosis by scavenger receptor SR-BII is clathrin-dependent and requires a carboxyl-terminal dileucine motif / Erik R. M. Eckhardt, Lei Cai, Shoba Shetty, Zhenze Zhao, Attila Szanto, Nancy R. Webb, Deneys R. Van der Westhuyzen
Dátum:2006
ISSN:0021-9258
Megjegyzések:The high density lipoprotein (HDL) receptor Scavenger Receptor BII (SR-BII) is encoded by an alternatively spliced mRNA from the SR-BI gene and is expressed in various tissues. SR-BII protein differs from SR-BI only in the carboxyl-terminal cytoplasmic tail, which, as we showed previously, must contain a signal that confers predominant intracellular expression and rapid endocytosis of HDL. We have shown that SR-BII mediates HDL endocytosis through aclathrin-dependent, caveolae-independent pathway. Two candidate amino acid motifs were identified in the tail that could mediate association with clathrin-containing endocytic vesicles: a putative dileucine motif at position 492-493 and an overlapping tyrosine-based YXXZ motif starting at position 489. Although substitution of tyrosine at position 489 with alanine or histidine did not affect endocytosis, substitution L492A resulted in increased surface binding of HDL and reduced HDL particle endocytosis. Substitution L493A had a less dramatic effect. No other regions in the carboxyl-terminal tail appeared to contain motifs required for HDL endocytosis. Substitutions of leucine at position 492 with the hydrophobic amino acids valine or phenylalanine also reduced HDL endocytosis, stressing the importance of leucine at this position. Introducing the SR-BII YTPLL motif into the carboxyl-terminal cytoplasmic tail of SR-BI converted SR-BI into an endocytic receptor resembling SR-BII. These results demonstrated that SR-BII differs from SR-BI in subcellular localization and trafficking and suggest that the two isoforms differ in the manner in which they target ligands intracellularly.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal Of Biological Chemistry. - 281 : 7 (2006), p. 4348-4353. -
További szerzők:Szántó Attila (1976-) (orvos, biokémikus) Cai, Lei Shetty, Shoba Zhao, Zhenze Webb, Nancy R. Westhuyzen, Deneys R. van der
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12.

001-es BibID:BIBFORM049069
Első szerző:Estève, Eric
Cím:Critical Amino Acid Residues Determine the Binding Affinity and the Ca2+ Release Efficacy of Maurocalcine in Skeletal Muscle Cells / Eric Estève, Sophia Smida-Rezgui, Sandor Sarkozi, Csaba Szegedi, Imed Regaya, Lili Chen, Xavier Altafaj, Hervé Rochat, Paul Allen, Isaac N. Pessah, Isabelle Marty, Jean-Marc Sabatier, Istvan Jona, Michel De Waard, Michel Ronjat
Dátum:2003
ISSN:0021-9258 1083-351X
Megjegyzések:Maurocalcine (MCa) is a 33 amino acid residue peptide toxin isolated from the scorpion Scorpio maurus palmatus. MCa and mutated analogues were chemically synthesized, and their interaction with the skeletal muscle ryanodine receptor (RyR1) was studied on purified RyR1, sarcoplasmic reticulum (SR) vesicles, and cultured myotubes. MCa strongly potentiates [3H]ryanodine binding on SR vesicles (7-fold at pCa 5) with an apparent EC50 of 12 nm. MCa decreases the sensitivity of [3H]ryanodine binding to inhibitory high Ca2+ concentrations and increases it to the stimulatory low Ca2+ concentrations. In the presence of MCa, purified RyR1 channels show long-lasting openings characterized by a conductance equivalent to 60% of the full conductance. This effect correlates with a global increase in Ca2+ efflux as demonstrated by MCa effects on Ca2+ release from SR vesicles. In addition, we show for the first time that external application of MCa to cultured myotubes produces a cytosolic Ca2+ increase due to Ca2+ release from 4-chloro-m-cresol-sensitive intracellular stores. Using various MCa mutants, we identified a critical role of Arg24 for MCa binding onto RyR1. All of the other MCa mutants are still able to modify [3H]ryanodine binding although with a decreased EC50 and a lower stimulation efficacy. All of the active mutants produce both the appearance of a subconductance state and Ca2+ release from SR vesicles. Overall, these data identify some amino acid residues of MCa that support the effect of this toxin on ryanodine binding, RyR1 biophysical properties, and Ca2+ release from SR.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Journal of Biological Chemistry. - 278 : 39 (2003), p. 37822-37831. -
További szerzők:Smida-Resgui, Sophia Sárközi Sándor (1966-) (élettanász) Szegedi Csaba Regaya, Imed Chen, Li-Li Altafaj, Xavier Rochat, Hervé Allen, Paul Pessah, Isaac N. Marty, Isabelle Sabatier, Jean Marc Jóna István (1948-) (élettanász, fizikus) De Waard, Michel Ronjat, Michel
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