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- W1916217928 abstract "Nucleophosmin-anaplastic lymphoma kinase (NPM-ALK) is aberrantly expressed in a subset of T cell lymphoma that commonly affects children and young adults. NPM-ALK possesses significant oncogenic potential that was previously documented using in vitro and in vivo experimental models. The exact mechanisms by which NPM-ALK induces its effects are poorly understood. We have recently demonstrated that NPM-ALK is physically associated with type I insulin-like growth factor receptor (IGF-IR). A positive feedback loop appears to exist between NPM-ALK and IGF-IR through which these two kinases interact to potentiate their effects. We have also found that a single mutation of the Tyr(644) or Tyr(664) residue of the C terminus of NPM-ALK to phenylalanine decreases significantly, but does not completely abolish, the association between NPM-ALK and IGF-IR. The purpose of this study was to determine whether the dual mutation of Tyr(644) and Tyr(664) abrogates the association and interactions between NPM-ALK and IGF-IR. We also examined the impact of this dual mutation on the oncogenic potential of NPM-ALK. Our results show that NPM-ALK(Y644,664F) completely lacks association with IGF-IR. Importantly, we found that the dual mutation of Tyr(644) and Tyr(664) diminishes the oncogenic effects of NPM-ALK, including its ability to induce anchorage-independent colony formation and to sustain cellular transformation, proliferation, and migration. Furthermore, the association between NPM-ALK and IGF-IR through Tyr(644) and Tyr(664) appears to contribute to maintaining the stability of NPM-ALK protein. Our results provide novel insights into the mechanisms by which NPM-ALK induces its oncogenic effects through interactions with IGF-IR in this aggressive lymphoma." @default.
- W1916217928 created "2016-06-24" @default.
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- W1916217928 date "2013-06-01" @default.
- W1916217928 modified "2023-09-25" @default.
- W1916217928 title "Molecular and Functional Characterizations of the Association and Interactions between Nucleophosmin-Anaplastic Lymphoma Kinase and Type I Insulin-Like Growth Factor Receptor" @default.
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- W1916217928 doi "https://doi.org/10.1593/neo.122012" @default.
- W1916217928 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3664999" @default.
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