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Regulation of the Hippo Pathway by Phosphatidic Acid-Mediated Lipid-Protein Interaction.

Molecular cell | 2018

The Hippo pathway plays a crucial role in organ size control and tumor suppression, but its precise regulation is not fully understood. In this study, we discovered that phosphatidic acid (PA)-related lipid signaling is a key regulator of the Hippo pathway. Supplementing PA in various Hippo-activating conditions activates YAP. This PA-related lipid signaling is involved in Rho-mediated YAP activation. Mechanistically, PA directly interacts with Hippo components LATS and NF2 to disrupt LATS-MOB1 complex formation and NF2-mediated LATS membrane translocation and activation, respectively. Inhibition of phospholipase D (PLD)-dependent PA production suppresses YAP oncogenic activities. PLD1 is highly expressed in breast cancer and positively correlates with YAP activation, suggesting their pathological relevance in breast cancer development. Taken together, our study not only reveals a role of PLD-PA lipid signaling in regulating the Hippo pathway but also indicates that the PLD-PA-YAP axis is a potential therapeutic target for cancer treatment.

Pubmed ID: 30293781 RIS Download

Associated grants

  • Agency: NCI NIH HHS, United States
    Id: R35 CA196878
  • Agency: NIGMS NIH HHS, United States
    Id: R01 GM079383
  • Agency: NIGMS NIH HHS, United States
    Id: R01 GM051586
  • Agency: NIGMS NIH HHS, United States
    Id: R01 GM126048
  • Agency: NIGMS NIH HHS, United States
    Id: R01 GM093040
  • Agency: NCI NIH HHS, United States
    Id: P30 CA062203

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