Inclusion body myopathy, Paget's disease of the bone and fronto-temporal dementia: a disorder of autophagy

JS Ju, CC Weihl - Human molecular genetics, 2010 - academic.oup.com
JS Ju, CC Weihl
Human molecular genetics, 2010academic.oup.com
Inclusion body myopathy associated with Paget's disease of the bone and fronto-temporal
dementia (IBMPFD) is a progressive autosomal dominant disorder caused by mutations in
p97/VCP (valosin-containing protein). p97/VCP is a member of the AAA+ (ATPase
associated with a variety of activities) protein family and participates in multiple cellular
processes. One particularly important role for p97/VCP is facilitating intracellular protein
degradation. p97/VCP has traditionally been thought to mediate the ubiquitin-proteasome …
Abstract
Inclusion body myopathy associated with Paget's disease of the bone and fronto-temporal dementia (IBMPFD) is a progressive autosomal dominant disorder caused by mutations in p97/VCP (valosin-containing protein). p97/VCP is a member of the AAA+ (ATPase associated with a variety of activities) protein family and participates in multiple cellular processes. One particularly important role for p97/VCP is facilitating intracellular protein degradation. p97/VCP has traditionally been thought to mediate the ubiquitin-proteasome degradation of proteins; however, recent studies challenge this dogma. p97/VCP clearly participates in the degradation of aggregate-prone proteins, a process principally mediated by autophagy. In addition, IBMPFD mutations in p97/VCP lead to accumulation of autophagic structures in patient and transgenic animal tissue. This is likely due to a defect in p97/VCP-mediated autophagosome maturation. The following review will discuss the evidence for p97/VCP in autophagy and how a disruption in this process contributes to IBMPFD pathogenesis.
Oxford University Press