Chapter title |
LRRK2 and the “LRRKtosome” at the Crossroads of Programmed Cell Death: Clues from RIP Kinase Relatives
|
---|---|
Chapter number | 10 |
Book title |
Leucine-Rich Repeat Kinase 2 (LRRK2)
|
Published in |
Advances in neurobiology, March 2017
|
DOI | 10.1007/978-3-319-49969-7_10 |
Pubmed ID | |
Book ISBNs |
978-3-31-949967-3, 978-3-31-949969-7
|
Authors |
Rideout, Hardy J., Re, Diane B., Hardy J. Rideout, Diane B. Re |
Editors |
Hardy J. Rideout |
Abstract |
Since its cloning and identification in 2004, considerable gains have been made in the understanding of the basic functionality of leucine-rich repeat kinase 2 (LRRK2), including its kinase and GTPase activities, its protein interactors and subcellular localization, and its expression in the CNS and peripheral tissues. However, the mechanism(s) by which expression of mutant forms of LRRK2 lead to the death of dopaminergic neurons of the ventral midbrain remains largely uncharacterized. Because of its complex domain structure, LRRK2 exhibits similarities with multiple protein families including ROCO proteins, as well as the RIP kinases. Cellular models in which mutant LRRK2 is overexpressed in neuronal-like cell lines or in primary neurons have found evidence of apoptotic cell death involving components of the extrinsic as well as intrinsic death pathways. However, since the expression of LRRK2 is comparatively quite low in ventral midbrain dopaminergic neurons, the possibility exists that non-cell autonomous signaling also contributes to the loss of these neurons. In this chapter, we will discuss the different neuronal death pathways that may be activated by mutant forms of LRRK2, guided in part by the behavior of other members of the RIP kinase protein family. |
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