Mitochondrial fission factor (MFF) is a critical regulator of peroxisome maturation
Mitochondrial fission factor (MFF) is a critical regulator of peroxisome maturation
复制标题
线粒体裂变因子 (MFF) 是过氧化物酶体成熟的关键调节因子
DOI:
10.1101/2020.01.08.898486
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Passmore J
中科院分区:
文献类型:
--
作者:
Passmore J
Peroxisomes are highly dynamic subcellular compartments with important functions in lipid and ROS metabolism. Impaired peroxisomal function can lead to severe metabolic disorders with developmental defects and neurological abnormalities. Recently, a new group of disorders has been identified, characterised by defects in the membrane dynamics and division of peroxisomes rather than by loss of metabolic functions. However, the contribution of impaired peroxisome plasticity to the pathophysiology of those disorders is not well understood. Mitochondrial fission factor (MFF) is a key component of both the peroxisomal and mitochondrial division machinery. Patients with MFF deficiency present with developmental and neurological abnormalities. Peroxisomes (and mitochondria) in patient fibroblasts are highly elongated as a result of impaired organelle division. The majority of studies into MFF-deficiency have focused on mitochondrial dysfunction, but the contribution of peroxisomal alterations to the pathophysiology is largely unknown. Here, we show that MFF deficiency does not cause alterations to overall peroxisomal biochemical function. However, loss of MFF results in reduced import-competency of the peroxisomal compartment and leads to the accumulation of pre-peroxisomal membrane structures. We show that peroxisomes in MFF-deficient cells display alterations in peroxisomal redox state and intra-peroxisomal pH. Removal of elongated peroxisomes through induction of autophagic processes is not impaired. A mathematical model describing key processes involved in peroxisome dynamics sheds further light into the physical processes disturbed in MFF-deficient cells. The consequences of our findings for the pathophysiology of MFF-deficiency and related disorders with impaired peroxisome plasticity are discussed.
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影响因子:
4
作者:
Koch, Johannes;Brocard, Cecile
通讯作者:
Brocard, Cecile
影响因子:
4
作者:
Koch, A;Schneider, G;Schrader, M
通讯作者:
Schrader, M
DOI:
10.1007/978-1-4939-6937-1_16
发表时间:
2017-01-01
期刊:
PEROXISOMES: METHODS AND PROTOCOLS
影响因子:
--
作者:
Godinho, Luis F.;Schrader, Michael
通讯作者:
Schrader, Michael
影响因子:
2
作者:
M. Schrader;I. Castro;H. Fahimi;M. Islinger
通讯作者:
M. Islinger
影响因子:
2.5
作者:
M. Schrader;M. Thiemann;H. Fahimi
通讯作者:
H. Fahimi