Monocytes and macrophages as biomarkers for the diagnosis of megalencephalic leukoencephalopathy with subcortical cysts. (Articolo in rivista)

Type
Label
  • Monocytes and macrophages as biomarkers for the diagnosis of megalencephalic leukoencephalopathy with subcortical cysts. (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.mcn.2013.07.001. (literal)
Alternative label
  • Petrini S 1, Minnone G 2, Coccetti M 1 , Frank C 3 , Aiello C 4, Cutarelli A 3, Ambrosini E5, Lanciotti A5, Brignone MS5, D'Oria V1, Strippoli R 2,6, De Benedetti F 2, Bertini E 4 and Bracci-Laudiero L 2,7. (2013)
    Monocytes and macrophages as biomarkers for the diagnosis of megalencephalic leukoencephalopathy with subcortical cysts.
    in Molecular and cellular neurosciences (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Petrini S 1, Minnone G 2, Coccetti M 1 , Frank C 3 , Aiello C 4, Cutarelli A 3, Ambrosini E5, Lanciotti A5, Brignone MS5, D'Oria V1, Strippoli R 2,6, De Benedetti F 2, Bertini E 4 and Bracci-Laudiero L 2,7. (literal)
Pagina inizio
  • 307 (literal)
Pagina fine
  • 320 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 56 (literal)
Rivista
Note
  • PubMe (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 Confocal Microscopy Core Facility, Research Center, Bambino Gesù Children's Hospital, IRCCS 2 Division of Rheumatology, Bambino Gesu' Children's Hospital IRCCS, Rome Italy 3 National Center for Rare Diseases, Istituto Superiore di Sanità, Rome, Italy 4 Unit of Molecular Medicine for Neuromuscular and Neurodegenerative Disorders, Bambino Gesu' Children's Hospital IRCCS, Rome Italy 5 Department of Cell Biology and Neurosciences, Istituto Superiore di Sanità, Rome, Italy 6 Integrin Signaling Laboratory, Department of Vascular Biology and Inflammation, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain 7 Institute of Translational Pharmacology, CNR, Rome Italy (literal)
Titolo
  • Monocytes and macrophages as biomarkers for the diagnosis of megalencephalic leukoencephalopathy with subcortical cysts. (literal)
Abstract
  • Megalencephalic leukoencephalopathy with subcortical cysts (MLC) is a rare congenital leukodystrophy characterized by macrocephaly, subcortical cysts and demyelination. The majority of patients harbor mutations in the MLC1 gene encoding for a membrane protein with largely unknown function. Mutations in MLC1 hamper its normal trafficking and distribution in cell membranes, leading to enhanced degradation. MLC1 protein is highly expressed in brain astrocytes and in circulating blood cells, particularly monocytes. We used these easily available cells and monocyte-derived macrophages from healthy donors and MLC1-mutated patients to study MLC1 expression and localization, and to investigate how defective MLC1 mutations may affect macrophage functions. RT-PCR, western blot and immunofluorescence analyses show that MLC1 is expressed in both monocytes and macrophages, and its biosynthesis follows protein trafficking between endoplasmic reticulum and trans-Golgi network and the secretory pathway to the cell surface. MLC1 is transported along the endosomal recycling pathway passing through Rab5+ and Rab11A+vesicles before lysosomal degradation. Alterations in MLC1 trafficking and distribution were observed in macrophages from MLC1-mutated patients, which also showed changes in the expression and localization of several proteins involved in plasma membrane permeability, ion and water homeostasis and ion-regulated exocytosis. As a consequence of these alterations, patient-derived macrophages show abnormal cell morphology and intracellular calcium influx and altered response to hypo-osmotic stress. Our results suggest that blood-derived macrophages may give relevant information on MLC1 function and may be considered as valid biomarkers for MLC diagnosis and for investigating therapeutic strategies aimed to restore MLC1 trafficking in patient cells. (literal)
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