Selective distribution of protein kinase A regulatory subunit RII{alpha} in rodent gliomas.

Neuro-oncology
Carla Mucignat-CarettaAntonio Caretta

Abstract

Differential diagnosis of brain tumor types is mainly based on cell morphology and could benefit from additional markers. The cAMP second-messenger system is involved in regulating cell proliferation and differentiation and is conceivably modulated during cancer transformation. The cAMP second-messenger system mainly activates protein kinases, which are in part docked to cytoskeleton, membranes, or organelles by anchoring proteins, forming protein aggregates that are detergent insoluble and not freely diffusible and that are characteristic for each cell type. The intracellular distribution of the detergent-insoluble regulatory subunits (R) of the cAMP-dependent protein kinase has been examined in mouse and rat glioma cells both in vitro and in vivo by immunohistochemistry. In normal rodent brains, the RIIalpha regulatory subunit is detergent insoluble only in ependymal cells, while in the rest of the brain it is present in soluble form. Immunohistochemistry shows that in both mouse and rat glioma cell lines, RIIalpha is mainly detergent insoluble. RIIalpha is localized close to the nucleus, associated with smooth vesicles in the trans-Golgi network area. Both paclitaxel and vinblastine cause a redistribution of RIIalpha within ...Continue Reading

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Citations

Apr 20, 2010·BMC Cancer·Carla Mucignat-CarettaAntonio Caretta
May 9, 2015·Future Oncology·Maira ZorzanCarla Mucignat-Caretta
Jan 1, 2011·Cancers·Antonio Caretta, Carla Mucignat-Caretta
Dec 22, 2017·Cancers·Carla Mucignat-CarettaAntonio Caretta
Nov 2, 2019·Cancers·Antonio CarettaCarla Mucignat-Caretta
Jan 30, 2020·Archiv der Pharmazie·Giovanni RibaudoCarla Mucignat-Caretta
May 3, 2020·International Journal of Molecular Sciences·Carla Mucignat-Caretta, Antonio Caretta

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