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001-es BibID:	BIBFORM043609
Első szerző:	Albert Réka
Cím:	Cultivation and characterization of cornea limbal epithelial stem cells on lens capsule in animal material-free medium / Réka Albert, Zoltán Veréb, Krisztián Csomós, Morten C. Moe, Erik O. Johnsen, Ole Kristoffer Olstad, Bjørn Nicolaissen, Éva Rajnavölgyi, László Fésüs, András Berta, Goran Petrovski
Dátum:	2012
ISSN:	1932-6203
Megjegyzések:	A simple, reproducible, animal-material free method for cultivating and characterizing cornea limbal epithelial stem cells (LESCs) on human lens capsule (LC) was developed for future clinical transplantation. The limbal tissue explants (2 ? 2 ? 0.25 mm) were harvested from 77 cadavers and expanded ex vivo on either cell culture plates or LC in medium containing human serum as the only growth supplement. Cell outgrowth at the edge of the explants was observed within 24 hours of cultivation and achieved viable outgrowth (>97% viability as measured by MTT assay and flow cytometry) within two weeks. The outgrowing cells were examined by genome-wide microarray including markers of stemness (p63?, ABCG2, CK19, Vimentin and Integrin ?9), proliferation (Ki-67), limbal epithelial cells (CK 8/18 and 14) and differentiated cornea epithelial cells (CK 3 and 12). Immunostaining revealed the non-hematopoietic, -endothelial and -mesenchymal stem cell phenotype of the LESCs and the localization of specific markers in situ. Cell adhesion molecules, integrins and lectin-based surface carbohydrate profiling showed a specific pattern on these cells, while colony-formation assay confirmed their clonal potency. The LESCs expressed a specific surface marker fingerprint (CD117/c-kit, CXCR4, CD144/VE-Cadherin, CD146/MCAM, CD166/ALCAM, and surface carbohydrates: WGA, ConA, RCA, PNA and AIL) which can be used for better localization of the limbal stem cell niche. In summary, we report a novel method combining the use of a medium with human serum as the only growth supplement with LC for cultivating, characterizing and expanding cornea LESCs from cadavers or alternatively from autologous donors for possible treatment of LESC deficiency.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban Limbal epithelial stem cell egyetemen (Magyarországon) készült közlemény
Megjelenés:	PLoS One. - 7 : 10 (2012), p. e47187. -
További szerzők:	Veréb Zoltán (1980-) (immunológus, mikrobiológus, molekuláris biológus) Csomós Krisztián (1981-) (molekuláris biológus) Moe, Morten C. Johnsen, Erik O. Olstad, Ole Kristoffer Nicolaissen, Bjorn Rajnavölgyi Éva (1950-) (immunológus) Fésüs László (1947-) (orvos biokémikus) Berta András (1955-) (szemész, gyermekszemész) Petrovski, Goran (1975-) (orvos)
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001-es BibID:	BIBFORM049105
Első szerző:	Petrovski, Goran (orvos)
Cím:	Autophagy in the eye : a double-edged sword / Goran Petrovski, Réka Albert, Kai Kaarniranta, Morten C. Moe, László Fésüs, András Berta, Dipak K. Das
Dátum:	2012
Megjegyzések:	Autophagy, a cytoplasmic recycling process active from early development throughout lifetime and aging has turned from largely a morphological phenomenon to a well described molecular mechanism in health and disease. The eye as an organ in which an interplay of three germ layers is responsible for achieving complex visual response, is the place where battles for cellular life or death takes place continuously ? an organ in which the highest dead cell turnover occurs in the human body. The role of autophagy in the different segments of the eye remains not so well understood or described, making it difficult to classify autophagy as a protective or disease causing process. This chaptersummarizes the current knowledge about the role of autophagy in eye health and disease as well as the present drug targets applying autophagy as a protective mechanism against ophthalmic neurodegeneration and aging.
ISBN:	978 1 61942 266 7
Tárgyszavak:	Orvostudományok Elméleti orvostudományok könyvfejezet Autophagy double-edged sword
Megjelenés:	Autophagy: Principles, Regulation and Roles in Disease / szerk. Nikolai Gorbunov. - p. 157-180. -
További szerzők:	Albert Réka (1986-) Kaarniranta, Kai (1972-) (szemész szakorvos) Moe, Morten C. Fésüs László (1947-) (orvos biokémikus) Berta András (1955-) (szemész, gyermekszemész) Das, Dipak Kumar
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM028036
Első szerző:	Petrovski, Goran (orvos)
Cím:	Clearance of dying ARPE-19 cells by professional and nonprofessional phagocytes in vitro- implications for age-related macular degeneration (AMD) / Petrovski Goran, Berényi Erika, Moe Morten C., Vajas Attila, Fésüs László, Berta András, Facskó Andrea
Dátum:	2011
ISSN:	1755-375X
Megjegyzések:	Failure of retinal pigment epithelial (RPE) cells and macrophages to engulf different dying cells in the retina may result in accumulation of debris and development of age-related macular degeneration (AMD). The dynamics and influence of different treatments on this clearance process can be studied in vitro using human ARPE-19 cells and macrophages as phagocytes modelling dry and wet type of AMD, respectively. METHODS: Death through extracellular matrix detachment using polyHEMA-coated surfaces (anoikis) and UV irradiation (apoptosis) was induced in ARPE-19 cells. Two-coloured phagocytic assays were performed to quantify the amount of dying cells phagocytes engulfed (flow cytometry) and for visualization (fluorescent and scanning electron microscopy). The effect of phosphatidylserine inhibition with recombinant annexin-V and glucocorticoid (triamcinolone) treatment on the phagocytic process was tested. RESULTS: The clearance of anoikic and apoptotic cells by nondying ARPE-19 cells over 8 hr of co-incubation increased over time (at 8 hr, over 53% and 35% of the phagocytes contained engulfed dying cells, respectively). The human macrophages engulfed the anoikic and apoptotic ARPE-19 cells with seven and four times lower capacity, respectively. Phosphatidylserine appearance on the dying cells did not affect, but triamcinolone treatment enhanced the phagocytosis of the dying cells by macrophages. CONCLUSIONS: ARPE-19 cells are more efficient in clearing anoikic than UV-induced apoptotic cells. Macrophages are less efficient in the clearance process than ARPE-19 cells. The present model can be used for studying both dry and wet type of AMD in vitro and for testing different pharmacological aspects affecting this disease.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Acta Ophthalmologica. - 89 : 1 (2011), p. 30-34. -
További szerzők:	Berényi Erika Moe, Morten C. Vajas Attila (1973-) (szemész) Fésüs László (1947-) (orvos biokémikus) Berta András (1955-) (szemész, gyermekszemész) Facskó Andrea (1953-) (szemész)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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