AEG-1/MTDH/LYRIC, the Beginning: Initial cloning, structure, expression profile, and regulation of expression.

Seok Geun Lee, Dong Chul Kang, Rob DeSalle, Devanand Sarkar, Paul B. Fisher

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

59 Citations (Scopus)

Abstract

Since its initial identification as a HIV-1-inducible gene in 2002, astrocyte elevated gene-1 (AEG-1), subsequently cloned as metadherin (MTDH) and lysine-rich CEACAM1 coisolated (LYRIC), has emerged over the past 10 years as an important oncogene providing a valuable prognostic marker in patients with various cancers. Recent studies demonstrate that AEG-1/MTDH/LYRIC is a pleiotropic protein that can localize in the cell membrane, cytoplasm, endoplasmic reticulum (ER), nucleus, and nucleolus, and contributes to diverse signaling pathways such as PI3K-AKT, NF-κB, MAPK, and Wnt. In addition to tumorigenesis, this multifunctional protein is implicated in various physiological and pathological processes including development, neurodegeneration, and inflammation. The present review focuses on the discovery of AEG-1/MTDH/LYRIC and conceptualizes areas of future direction for this intriguing gene. We begin by describing how AEG-1, MTDH, and LYRIC were initially identified by different research groups and then discuss AEG-1 structure, functions, localization, and evolution. We conclude with a discussion of the expression profile of AEG-1/MTDH/LYRIC in the context of cancer, neurological disorders, inflammation, and embryogenesis, and discuss how AEG-1/MTDH/LYRIC is regulated. This introductory discussion of AEG-1/MTDH/LYRIC will serve as the basis for the detailed discussions in other chapters of the unique properties of this intriguing molecule.

Original languageEnglish
Title of host publicationAdvances in Cancer Research
PublisherAcademic Press Inc.
Pages1-38
Number of pages38
DOIs
Publication statusPublished - 2013

Publication series

NameAdvances in Cancer Research
Volume120
ISSN (Print)0065-230X

Bibliographical note

Funding Information:
We are indebted to the National Institutes of Health, including the National Cancer Institute Grant 1 R01 CA134721, National Institute of Neurological Disease and Stroke, 5 P01 NS31492, and the Thelma Newmeyer Corman Endowment to P. B. F., by National Cancer Institute Grant R01 CA138540 to D. S., by HRF-G-2012-6 to D. K. from Hallym University, and by a National Research Foundation of Korea grant (No. 2012-0005755) to S.-G. L. D. S. is a Harrison Scholar in the VCU Massey Cancer Center. P. B. F. holds the Thelma Newmeyer Corman Endowed Chair in Cancer Research at the VCU Massey Cancer Center.

Keywords

  • AEG-1/MTDH/LYRIC
  • C-Myc
  • Cloning
  • HIV
  • Ha-ras
  • PI3K/AKT

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