4.7 Article

The role of LRRK2 in the periphery: link with Parkinson's disease and inflammatory diseases

期刊

NEUROBIOLOGY OF DISEASE
卷 172, 期 -, 页码 -

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.nbd.2022.105806

关键词

Parkinson's disease; Leucine-rich repeat kinase 2; Alpha-synuclein; Gut-brain axis; Environmental risk; Peripheral inflammation

资金

  1. FWO Flanders [G0E1917N, G081121N]
  2. ERANET-NEURON REACT-NSC
  3. KU Leuven [C14/18/102]

向作者/读者索取更多资源

Parkinson's disease is considered a multisystemic disorder rather than a pure brain disease. There is increasing evidence that the pathology may originate in the periphery, but unknown aspects and contradictory data on peripheral pathological processes hinder the interpretation and treatment of Parkinson's disease. Mutations in the LRRK2 gene have been linked to Parkinson's disease, but the actual role of LRRK2 in its pathophysiology is not well understood.
Parkinson's disease (PD) is currently considered a multisystemic disorder rather than a pure brain disease, in line with the multiple hit hypothesis from Braak. However, despite increasing evidence that the pathology might originate in the periphery, multiple unknown aspects and contradictory data on the pathological processes taking place in the periphery jeopardize the interpretation and therapeutic targeting of PD. Mutations in the leucine-rich-repeat kinase 2 (LRRK2) gene have been widely linked with familial and sporadic PD cases. However, the actual role of LRRK2 in PD pathophysiology is far from understood. There is evidence that LRRK2 may be involved in alpha-synuclein (alpha-synuclein) pathology and immune cell regulation, but it has also been associated with inflammatory diseases such as inflammatory bowel disease, tuberculosis, leprosy, and several other bacterial infections. In this review, we focus on the different roles of LRRK2 in the periphery. More specifically, we discuss the involvement of LRRK2 in the propagation of alpha-synuclein pathology and its regulatory role in peripheral inflammation. A deeper understanding of the multidimensional functions of LRRK2 will pave the way for more accurate characterization of PD pathophysiology and its association with other inflammatory diseases.

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