The Rps23rg gene family originated through retroposition of the ribosomal protein s23 mRNA and encodes proteins that decrease Alzheimer's β-amyloid level and tau phosphorylation

Xiumei Huang, Yaomin Chen, Wu Bo Li, Stanley N. Cohen, Francesca-Fang Liao, Limin Li, Huaxi Xu, Yun Wu Zhang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Retroposition is an important mechanism for gene origination. However, studies to elucidate the functions of new genes originated through retroposition, especially the functions related to diseases, are limited. We recently identified a mouse gene, Rps23 retroposed gene 1 (Rps23rg1), that regulates β-amyloid (Aβ) level and tau phosphorylation, two major pathological hallmarks of Alzheimer's disease (AD), and found that Rps23rg1 originated through retroposition of the mouse ribosomal protein S23 (Rps23) mRNA. Here we show that retroposition of Rps23 mRNA occurred multiple times in different species but only generated another functionally expressed Rps23rg1-homologous gene, Rps23rg2, in mice, whereas humans may not possess functional Rps23rg homologs. Both Rps23rg1 and Rps23rg2 are reversely transcribed relative to the parental Rps23 gene, expressed in various tissues and encode proteins that interact with adenylate cyclases. Similar to the RPS23RG1 protein, RPS23RG2 can upregulate protein kinase A activity to reduce the activity of glycogen synthase kinase-3, Aβ level and tau phosphorylation. However, the effects of RPS23RG2 are weaker than those of RPS23RG1 and such a difference could be attributed to the extra carboxyl-terminal region of RPS23RG2, which may have an inhibitory effect. In addition, we show that the transmembrane domain of RPS23RG1 is important for its function. Together, our results present a new gene family, whose products and associated signaling pathways might prevent mice from developing AD-like pathologies.

Original languageEnglish (US)
Article numberddq302
Pages (from-to)3835-3843
Number of pages9
JournalHuman molecular genetics
Volume19
Issue number19
DOIs
StatePublished - Jul 22 2010

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Ribosomal Proteins
Amyloid
Phosphorylation
Messenger RNA
Genes
Proteins
1-phenyl-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline
Alzheimer Disease
Glycogen Synthase Kinase 3
Cyclic AMP-Dependent Protein Kinases
Adenylyl Cyclases
Up-Regulation
Pathology

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics
  • Genetics(clinical)

Cite this

The Rps23rg gene family originated through retroposition of the ribosomal protein s23 mRNA and encodes proteins that decrease Alzheimer's β-amyloid level and tau phosphorylation. / Huang, Xiumei; Chen, Yaomin; Li, Wu Bo; Cohen, Stanley N.; Liao, Francesca-Fang; Li, Limin; Xu, Huaxi; Zhang, Yun Wu.

In: Human molecular genetics, Vol. 19, No. 19, ddq302, 22.07.2010, p. 3835-3843.

Research output: Contribution to journalArticle

Huang, Xiumei ; Chen, Yaomin ; Li, Wu Bo ; Cohen, Stanley N. ; Liao, Francesca-Fang ; Li, Limin ; Xu, Huaxi ; Zhang, Yun Wu. / The Rps23rg gene family originated through retroposition of the ribosomal protein s23 mRNA and encodes proteins that decrease Alzheimer's β-amyloid level and tau phosphorylation. In: Human molecular genetics. 2010 ; Vol. 19, No. 19. pp. 3835-3843.
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