Research output: Contribution to journal › Article › peer-review
Mitochondrial dysfunction in adult midbrain dopamine neurons triggers an early immune response. / Filograna, R.; Lee, S.; Tiklova, K.; Mennuni, Mara; Jonsson, V.; Ringner, M.; Gilberg, Linda; Сопова, Елена Сергеевна; Шупляков, Олег Викторович; Koolmeister, C.; Olson, L.; Perlmann, T.; Larsson, N.G.
In: PLoS Genetics, Vol. 17, No. 9, e1009822, 27.09.2021.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Mitochondrial dysfunction in adult midbrain dopamine neurons triggers an early immune response
AU - Filograna, R.
AU - Lee, S.
AU - Tiklova, K.
AU - Mennuni, Mara
AU - Jonsson, V.
AU - Ringner, M.
AU - Gilberg, Linda
AU - Сопова, Елена Сергеевна
AU - Шупляков, Олег Викторович
AU - Koolmeister, C.
AU - Olson, L.
AU - Perlmann, T.
AU - Larsson, N.G.
N1 - Publisher Copyright: © 2021 Filograna et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
PY - 2021/9/27
Y1 - 2021/9/27
N2 - Dopamine (DA) neurons of the midbrain are at risk to become affected by mitochondrial damage over time and mitochondrial defects have been frequently reported in Parkinson’s disease (PD) patients. However, the causal contribution of adult-onset mitochondrial dysfunction to PD remains uncertain. Here, we developed a mouse model lacking Mitofusin 2 (MFN2), a key regulator of mitochondrial network homeostasis, in adult midbrain DA neurons. The knockout mice develop severe and progressive DA neuron-specific mitochondrial dysfunction resulting in neurodegeneration and parkinsonism. To gain further insights into pathophysiological events, we performed transcriptomic analyses of isolated DA neurons and found that mitochondrial dysfunction triggers an early onset immune response, which precedes mitochondrial swelling, mtDNA depletion, respiratory chain deficiency and cell death. Our experiments show that the immune response is an early pathological event when mitochondrial dysfunction is induced in adult midbrain DA neurons and that neuronal death may be promoted non-cell autonomously by the cross-talk and activation of surrounding glial cells.
AB - Dopamine (DA) neurons of the midbrain are at risk to become affected by mitochondrial damage over time and mitochondrial defects have been frequently reported in Parkinson’s disease (PD) patients. However, the causal contribution of adult-onset mitochondrial dysfunction to PD remains uncertain. Here, we developed a mouse model lacking Mitofusin 2 (MFN2), a key regulator of mitochondrial network homeostasis, in adult midbrain DA neurons. The knockout mice develop severe and progressive DA neuron-specific mitochondrial dysfunction resulting in neurodegeneration and parkinsonism. To gain further insights into pathophysiological events, we performed transcriptomic analyses of isolated DA neurons and found that mitochondrial dysfunction triggers an early onset immune response, which precedes mitochondrial swelling, mtDNA depletion, respiratory chain deficiency and cell death. Our experiments show that the immune response is an early pathological event when mitochondrial dysfunction is induced in adult midbrain DA neurons and that neuronal death may be promoted non-cell autonomously by the cross-talk and activation of surrounding glial cells.
KW - Animals
KW - DNA, Mitochondrial/genetics
KW - Disease Models, Animal
KW - Dopaminergic Neurons/metabolism
KW - Homeostasis
KW - Immunity
KW - Mesencephalon/metabolism
KW - Mice
KW - Mitochondria/metabolism
KW - Parkinsonian Disorders/genetics
UR - http://www.scopus.com/inward/record.url?scp=85118097032&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/9b00fb24-9eba-3708-a368-14726b30b162/
U2 - 10.1371/journal.pgen.1009822
DO - 10.1371/journal.pgen.1009822
M3 - Article
C2 - 34570766
VL - 17
JO - PLoS Genetics
JF - PLoS Genetics
SN - 1553-7390
IS - 9
M1 - e1009822
ER -
ID: 71417052