例如:"lncRNA", "apoptosis", "WRKY"

Nuclear localization of ING3 is required to suppress melanoma cell migration, invasion and angiogenesis.

Biochem Biophys Res Commun. 2020 Jun 25;527(2):418-424. Epub 2020 Apr 22
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摘要


Inhibitor of growth family member 3 (ING3), a tumor suppressor, plays crucial roles in cell cycle regulation, apoptosis and transcription. Previous studies suggest important roles of nuclear ING3, however, the nuclear localization sequence (NLS) of ING3 is not defined and its biological functions remain to be elucidated. In this study, various ING3 mutants were generated to identify its NLS. The NLS of ING3 was determined as KKFK between 164 and 167 amino acids. More intriguingly, replacement of Lysine 164 residue of ING3 with alanine (K164A) resulted in retention of ING3 in the cytoplasm. Overexpression of ING3 led to inhibition of melanoma cell migration, invasion, and angiogenesis respectively, however, this inhibition was abrogated in cells with overexpression of ING3-K164A mutant. In conclusion, this study identified the NLS of ING3 and demonstrated the significance of ING3 nuclear localization for tumor suppressive functions of ING3, and future studies await to elucidate the role of ING3 (K164) post-modificaton in its nuclear transportation and cancer development.

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