This report describes Perry syndrome, an autosomal dominant neurodegenerative disorder. The human gene implicated in this disease is DCTN1, which encodes dynactin 1 (p150, Glued (Drosophila) homolog), the largest polypeptide of the dynactin complex. There is one high-scoring fly ortholog, DCTN1-p150, for which RNAi targeting constructs, alleles caused by insertional mutagenesis, and classical amorphic alleles have been generated. DCTN1 is also associated with neuronopathy, distal hereditary motor, autosomal dominant 14 (HMND14; MIM:607641; FBhh0000147) and with an increased susceptibility to amyotrophic lateral sclerosis (MIM:105400; FBhh0000002). There is a second, moderate-scoring, ortholog in flies, Dred.
Multiple UAS constructs of the human Hsap\DCTN1 gene have been introduced into flies, including wild-type and a gene carrying a mutational lesion implicated in Perry syndrome. See the 'Disease-Implicated Variants' table below. Strong pan-neuronal overexpression of the wild-type human gene is toxic; low-level expression allows heterologous rescue (functional complementation) of the larval lethal phenotype of DCTN1-p150 amorphic mutations, however, the rescued adults are sterile. Phenotypes of variants analogous to those associated with Perry syndrome have been compared to those associated with distal hereditary motor neuronopathy (HMND14, FBhh0000147).
Homozygous amorphic mutations of Dmel\Hsap\DCTN1 are lethal in the embryonic or early larval stages. Heterozygous animals exhibit neuroanatomy defects, neurophysiology defects, and small roughened eyes.
[updated Feb. 2024 by FlyBase; FBrf0222196]
[PERRY SYNDROME](https://omim.org/entry/168605)
[DYNACTIN 1; DCTN1](https://omim.org/entry/601143)
Perry syndrome is an autosomal dominant neurodegenerative disorder classically characterized by adult-onset parkinsonism and depression, followed by weight loss and respiratory hypoventilation (Perry et al., 1975, pubmed:1122713). The phenotype has subsequently been expanded to include features that overlap with other neurodegenerative conditions, including frontotemporal dementia (see, e.g., MIM:600274) and progressive supranuclear palsy (PSP; MIM:601104). There is intrafamilial variation in the manifestations of the disorder (summary by Caroppo et al., 2014, pubmed:24343258; review by Wider et al., 2010, pubmed:19732908). Mutation in the DCTN1 gene can also cause distal motor neuropathy type VIIB (HMN7B; MIM:607641, temp-HMN7B) and confer increased susceptibility to amyotrophic lateral sclerosis (ALS; see MIM:105400, FBhh0000002). [From MIM:168605, 2016.01.08]
Perry syndrome is caused by heterozygous mutation in the DCTN1 gene. [From MIM:168605, 2016.01.08]
The DCTN1 gene encodes p150(Glued), the largest polypeptide of the dynactin complex, which binds directly to microtubules and to cytoplasmic dynein (DYNC1H1; MIM:600112), a microtubule-based biologic motor protein (Holzbaur and Tokito, 1996, pubmed:8838327). [From MIM:601143, 2016.01.08]
One to many: 1 human to 2 Drosophila.
High-scoring ortholog of human DCTN1 (2 Drosophila to 1 human); Dmel\DCTN1-p150 shares 34% identity and 55% similarity with the human gene.