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1.

001-es BibID:BIBFORM076128
035-os BibID:(Wos)000450299400006 (Scopus)85055751019
Első szerző:Nizsalóczki Enikő
Cím:Minimum degree of overlap between IL-9R and IL-2R on human T lymphoma cells : a quantitative CLSM and FRET analysis / Nizsalóczki Enikő, Nagy Péter, Mocsár Gábor, Szabó Ágnes, Csomós István, Waldmann Thomas A., Vámosi György, Mátyus László, Bodnár Andrea
Dátum:2018
ISSN:1552-4922 1552-4930
Megjegyzések:The heterodimeric receptor complex of IL-9 consists of the cytokine-speci?c ?-subunit and the common ? -chain shared with other cytokines, including IL-2, a central regulator of T cell function. We have shown previously the bipartite spatial relationship of IL-9 and IL-2 receptors at the surface of human T lymphoma cells: in addition to common clusters, expression of the two receptor kinds could also be observed in segregated membrane areas. Here we analyzed further the mutual cell surface organization of IL-9 and IL-2 receptors. Complementing Pearson correlation data with co-occurrence analysis of confocal microscopic images revealed that a minimum degree of IL-9R/IL-2R co-localization exists at the cell surface regardless of the overall spatial correlation of the two receptor kinds. Moreover, our FRET experiments demonstrated molecular scale assemblies of the elements of the IL-9/IL-2R system. Binding of IL-9 altered the structure and/or composition of these clusters. It is hypothesized, that by sequestering receptor subunits in common membrane areas, the overlapping domains of IL-9R and IL-2R provide a platform enabling both the formation of the appropriate receptor complex as well as subunit sharing between related cytokines.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
IL-9 and -2 receptors
uorescence resonance energy transfer
Manders coef-cient
co-occurrence analysis
Pearson correlation analysis
confocal microscopy
human T lymphoma cells
co-localization of membrane proteins
Megjelenés:Cytometry Part A. - 93 : 11 (2018), p. 1106-1117. -
További szerzők:Nagy Péter (1971-) (biofizikus) Mocsár Gábor (1981-) (biofizikus) Nagyné Szabó Ágnes Timea (1982-) (vegyész) Csomós István (1983-) (molekuláris biológus) Waldmann, Thomas A. Vámosi György (1967-) (biofizikus) Mátyus László (1956-) (biofizikus) Dóczy-Bodnár Andrea (1970-) (biofizikus)
Pályázati támogatás:EFOP-3.6.3-VEKOP-16-2017-00009
EFOP
GINOP-2.3.2-15-2016-00026
GINOP
GINOP-2.3.3-15-2016-00003
GINOP
K120302
OTKA
Intramural research program of the National Cancer Institute, NIH
Egyéb
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Intézményi repozitóriumban (DEA) tárolt változat
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2.

001-es BibID:BIBFORM095719
035-os BibID:(WoS)000668898600016
Első szerző:Shaw, Abhirup
Cím:Mitophagy is downregulated upon thermogenic stimulus in human beige adipocytes / Shaw Abhirup, Szatmári-Tóth Mária, Csomós István, Mocsár Gábor, Balajthy Zoltán, Győry Ferenc, Kristóf Endre Károly, Fésüs László
Dátum:2021
ISSN:2211-5463
Megjegyzések:Adipocytes are classi?ed into white, brown and beige. Brown and beige adipocytes are important targets to combat obesity, as they are capable to dissipate energy in the form of heat, while the white adipocytes are primarily for energy storage. UCP1, an inner mitochondrial membrane protein mediates thermogenesis by uncoupling the mitochondrial respiratory chain from ATP synthesis. Hence, mitochondria are important for the thermogenic and metabolic functions of adipocytes. UCP1+ mitochondria in human adipocytes are mostly fragmented (Pisani et al, 2017). Mitophagy plays a vital role in beige to white adipocyte transition in mouse (Altshuler-Keylin et al, 2016). We intend to characterize the role of mitophagy in the thermogenic activation of primary human abdominal subcutaneous adipocytes and SGBS cells. Isolated preadipocytes were differentiated into white and browning adipocytes, which were treated with dibutyryl-cAMP (6, 10 and 14 hours). Genes related to parkin-dependent and independent mitophagy were downregulated upon thermogenic stimulus; the parkin dependent ones being the most downregulated. The lipidated form of LC3, LC3-II is recruited on the outer membrane of the autophagosome which indicates ongoing autophagy. TOM20 is an outer mitochondrial membrane protein and marks the mitochondria. LC3 and TOM20 immunostaining were performed, followed by quanti?cation of LC3 punctae,which was high in untreated control adipocytes but decreased signi?cantly upon thermogenic stimulus, suggesting repressed autophagy/mitophagy. Colocalization of TOM20 and LC3 can indicate mitophagy. Decreased colocalization was observed upon thermogenic stimulus, which further proved repressed mitophagy.TOM20 quanti?cation showed increased number of fragmented mitochondria upon thermogenic stimulus suggesting prompt inhibition of mitophagy, thereby protecting many fragmented mitochondria from degradation and boosting thermogenesis.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idézhető absztrakt
folyóiratcikk
Megjelenés:FEBS Open Bio. - 11 : S1 (2021), p. 9. -
További szerzők:Szatmári-Tóth Mária (1987-) (molekuláris biológus) Csomós István (1983-) (molekuláris biológus) Mocsár Gábor (1981-) (biofizikus) Balajthy Zoltán (1957-) (biokémikus, sejtbiológus) Győry Ferenc (1964-) (sebész) Kristóf Endre (1987-) (általános orvos) Fésüs László (1947-) (orvos biokémikus)
Pályázati támogatás:GINOP-2.3.2-15-2016-00006
GINOP
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
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3.

001-es BibID:BIBFORM087859
035-os BibID:(cikkazonosító)6640 (scopus)85090621567 (wos)000580228400001
Első szerző:Szatmári-Tóth Mária (molekuláris biológus)
Cím:Thermogenic Activation Downregulates High Mitophagy Rate in Human Masked and Mature Beige Adipocytes / Mária Szatmári-Tóth, Abhirup Shaw, István Csomós, Gábor Mocsár, Pamela Fischer-Posovszky, Martin Wabitsch, Zoltán Balajthy, Cecília Lányi, Ferenc Győry, Endre Kristóf, László Fésüs
Dátum:2020
ISSN:1661-6596 1422-0067
Megjegyzések:Thermogenic brown and beige adipocytes oxidize metabolic substrates producing heat, mainly by the mitochondrial uncoupling protein UCP1, and can thus counteract obesity. Masked beige adipocytes possess white adipocyte-like morphology, but can be made thermogenic by adrenergic stimuli. We investigated the regulation of mitophagy upon thermogenic activation of human masked and mature beige adipocytes. Human primary abdominal subcutaneous adipose-derived stromal cells (hASCs) and SGBS preadipocytes were differentiated to white and beige adipocytes, then their cAMP-induced thermogenic potential was assessed by detecting increased expressions of UCP1, mitochondrial DNA content and respiratory chain complex subunits. cAMP increased the thermogenic potential of white adipocytes similarly to beige ones, indicating the presence of a masked beige population. In unstimulated conditions, a high autophagic flux and mitophagy rates (demonstrated by LC3 punctae and TOM20 co-immunostaining) were observed in white adipocytes, while these were lower in beige adipocytes. Silencing and gene expression experiments showed that the ongoing mitophagy was Parkin-independent. cAMP treatment led to the downregulation of mitophagy through PKA in both types of adipocytes, resulting in more fragmented mitochondria and increased UCP1 levels. Our data indicates that mitophagy is repressed upon encountering a short-term adrenergic stimulus, as a fast regulatory mechanism to provide high mitochondrial content for thermogenesis.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:International Journal of Molecular Sciences. - 21 : 18 (2020), p. 1-21. -
További szerzők:Shaw, Abhirup (1992-) Csomós István (1983-) (molekuláris biológus) Mocsár Gábor (1981-) (biofizikus) Fischer-Posovszky Pamela Wabitsch, Martin Balajthy Zoltán (1957-) (biokémikus, sejtbiológus) Lányi Cecília Győry Ferenc (1964-) (sebész) Kristóf Endre (1987-) (általános orvos) Fésüs László (1947-) (orvos biokémikus)
Pályázati támogatás:GINOP-2.3.2-15-2016-00006
GINOP
FK131424
OTKA
K129139
OTKA
ÚNKP-20-5-DE-12
Egyéb
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
DOI
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4.

001-es BibID:BIBFORM116662
035-os BibID:(Scopus)85171172955 (WoS)001023372700001 (cikkazonosító)1249909
Első szerző:Vámos Attila (gyógyszer-biotechnológus)
Cím:Corrigendum : Human abdominal subcutaneous-derived active beige adipocytes carrying FTO rs1421085 obesity-risk alleles exert lower thermogenic capacity / Vámos Attila, Arianti Rini, Vinnai Boglárka Ágnes, Alrifai Rahaf, Shaw Abhirup, Póliska Szilárd, Guba Andrea, Csősz Éva, Csomós István, Mocsár Gábor, Lányi Cecilia, Balajthy Zoltán, Fésüs László, Kristóf Endre
Dátum:2023
ISSN:2296-634X
Megjegyzések:In the published article, there was an error. In the published article, the Reference "Bjune et al., 2005" was cited with an incorrect year of publication. The correct year of publication is 2019. In the published article "Bjune, J. I., Haugen, C., Gudbrandsen, O., Nordb?, O. P., Nielsen, H. J., V?age, V., et al. (2019). IRX5 regulates adipocyte amyloid precursor protein and mitochondrial respiration in obesity. Int J Obes (Lond)., 43(11), 2151?2162. https://doi.org/10.1038/s41366-018-0275-y" was not referenced in the article. The reference has now been inserted into the article. A correction has been made to the Introduction. This sentence previously stated: "In addition, IRX5 silencing increased the mitochondrial respiration in isolated mouse adipocytes (Bjune et al., 2005)." The corrected sentence appears below: "In addition, IRX5 silencing increased the mitochondrial respiration in isolated mouse adipocytes (Bjune et al., 2019)." The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated. Copyright ? 2023 Vámos, Arianti, Vinnai, Alrifai, Shaw, Póliska, Guba, Csősz, Csomós, Mocsár, Lányi, Balajthy, Fésüs and Kristóf.
Tárgyszavak:Orvostudományok Elméleti orvostudományok hozzászólás
folyóiratcikk
adipocytes
beige
FTO rs1421085
obesity
SLC7A10
thermogenesis
UCP 1
Megjelenés:Frontiers in Cell and Developmental Biology. - 11 (2023), p. 1-2. -
További szerzők:Arianti, Rini (1991-) (biokémikus) Vinnai Boglárka Ágnes (1996-) (molekuláris biológus) Alrifai, Rahaf Shaw, Abhirup (1992-) Póliska Szilárd (1978-) (biológus) Guba Andrea (1975-) (Okleveles vegyész) Csősz Éva (1977-) (biokémikus, molekuláris biológus) Csomós István (1983-) (molekuláris biológus) Mocsár Gábor (1981-) (biofizikus) Lányi Cecília Balajthy Zoltán (1957-) (biokémikus, sejtbiológus) Fésüs László (1947-) (orvos biokémikus) Kristóf Endre (1987-) (általános orvos)
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Intézményi repozitóriumban (DEA) tárolt változat
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5.

001-es BibID:BIBFORM112108
035-os BibID:(cikkazonosító)1155673 (scopus)85164495947 (wos)001023372700001
Első szerző:Vámos Attila (gyógyszer-biotechnológus)
Cím:Human Abdominal Subcutaneous-Derived Active Beige Adipocytes Carrying FTO rs1421085 Obesity-Risk Alleles Exert Lower Thermogenic Capacity / Vámos Attila, Arianti Rini, Vinnai Boglárka Ágnes, Alrifai Rahaf, Shaw Abhirup, Póliska Szilárd, Guba Andrea, Csősz Éva, Csomós István, Mocsár Gábor, Lányi Cecília, Balajthy Zoltán, Fésüs László, Kristóf Endre
Dátum:2023
ISSN:2296-634X
Megjegyzések:White adipocytes store lipids, have a large lipid droplet and few mitochondria. Brown and beige adipocytes, which produce heat, are characterized by high expression of uncoupling protein (UCP) 1, multilocular lipid droplets, and large amounts of mitochondria. The rs1421085 T-to-C single-nucleotide polymorphism (SNP) of the human FTO gene interrupts a conserved motif for ARID5B repressor, resulting in adipocyte type shift from beige to white. We obtained abdominal subcutaneous adipose tissue from donors carrying FTO rs1421085 TT (risk-free) or CC (obesity-risk) genotypes, isolated and differentiated their preadipocytes into beige adipocytes (driven by the PPAR? agonist rosiglitazone for 14 days), and activated them with dibutyryl-cAMP for 4 hours. Then, either the same culture conditions were applied for additional 14 days (active beige adipocytes) or it was replaced by a white differentiation medium (inactive beige adipocytes). White adipocytes were differentiated by their medium for 28 days. RNA-sequencing was performed to investigate the gene expression pattern of adipocytes carrying different FTO alleles and found that active beige adipocytes had higher brown adipocyte content and browning capacity compared to white or inactive beige ones when the cells were obtained from risk-free TT but not from obesity-risk CC genotype carriers. Active beige adipocytes carrying FTO CC had lower thermogenic gene (e.g., UCP1, PM20D1, CIDEA) expression and thermogenesis measured by proton leak respiration as compared to TT carriers. In addition, active beige adipocytes with CC alleles exerted lower expression of ASC-1 neutral amino acid transporter (encoded by SLC7A10) and less consumption of Ala, Ser, Cys, and Gly as compared to risk-free carriers. We did not observe any influence of the FTO rs1421085 SNP on white and inactive beige adipocytes highlighting its exclusive and critical effect when adipocytes were activated for thermogenesis.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
adipocytes
beige
obesity
FTO rs1421085
thermogenesis
UCP1
SLC7A10
Megjelenés:Frontiers in Cell and Developmental Biology. - 11 (2023), p. 1-18. -
További szerzők:Arianti, Rini (1991-) (biokémikus) Vinnai Boglárka Ágnes (1996-) (molekuláris biológus) Alrifai, Rahaf Shaw, Abhirup (1992-) Póliska Szilárd (1978-) (biológus) Guba Andrea (1975-) (Okleveles vegyész) Csősz Éva (1977-) (biokémikus, molekuláris biológus) Csomós István (1983-) (molekuláris biológus) Mocsár Gábor (1981-) (biofizikus) Lányi Cecília Balajthy Zoltán (1957-) (biokémikus, sejtbiológus) Fésüs László (1947-) (orvos biokémikus) Kristóf Endre (1987-) (általános orvos)
Pályázati támogatás:FK131424
OTKA
K129139
OTKA
ÚNKP-22-3-I-DE-30
Egyéb
ÚNKP-22-3-II-DE-25
Egyéb
Internet cím:Szerző által megadott URL
Intézményi repozitóriumban (DEA) tárolt változat
DOI
Borító:

6.

001-es BibID:BIBFORM101024
035-os BibID:(cikkazonosító)363 (WoS)000774617800001 (Scopus)85127543748
Első szerző:Vámos Attila (gyógyszer-biotechnológus)
Cím:Mitophagy Mediates the Beige to White Transition of Human Primary Subcutaneous Adipocytes Ex Vivo / Vámos Attila, Shaw Abhirup, Varga Klára, Csomós István, Mocsár Gábor, Balajthy Zoltán, Lányi Cecília, Bacso Zsolt, Szatmári-Tóth Mária, Kristóf Endre
Dátum:2022
ISSN:1424-8247
Megjegyzések:Brown and beige adipocytes have multilocular lipid droplets, express uncoupling protein (UCP) 1, and promote energy expenditure. In rodents, when the stimulus of browning subsides, parkin-dependent mitophagy is activated and dormant beige adipocytes persist. In humans, however, the molecular events during the beige to white transition have not been studied in detail. In this study, human primary subcutaneous abdominal preadipocytes were differentiated to beige for 14 days, then either the beige culture conditions were applied for an additional 14 days or it was replaced by a white medium. Control white adipocytes were differentiated by their specific cocktail for 28 days. Peroxisome proliferator-activated receptor ?-driven beige differentiation resulted in increased mitochondrial biogenesis, UCP1 expression, fragmentation, and respiration as compared to white. Morphology, UCP1 content, mitochondrial fragmentation, and basal respiration of the adipocytes that underwent transition, along with the induction of mitophagy, were similar to control white adipocytes. However, white converted beige adipocytes had a stronger responsiveness to dibutyril-cAMP, which mimics adrenergic stimulus, than the control white ones. Gene expression patterns showed that the removal of mitochondria in transitioning adipocytes may involve both parkin-dependent and -independent pathways. Preventing the entry of beige adipocytes into white transition can be a feasible way to maintain elevated thermogenesis and energy expenditure.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
obesity
beige adipocytes
mitophagy
thermogenesis
uncoupling protein 1
parkin
Megjelenés:Pharmaceuticals. - 15 : 3 (2022), p. 1-21. -
További szerzők:Shaw, Abhirup (1992-) Varga Klára Csomós István (1983-) (molekuláris biológus) Mocsár Gábor (1981-) (biofizikus) Balajthy Zoltán (1957-) (biokémikus, sejtbiológus) Lányi Cecília Bacsó Zsolt (1963-) (biofizikus) Szatmári-Tóth Mária (1987-) (molekuláris biológus) Kristóf Endre (1987-) (általános orvos)
Pályázati támogatás:FK131424
OTKA
EFOP-3.6.3-VEKOP-16-2017-00009
EFOP
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
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