PINK1-Dependent Mitophagy Regulates the Migration and Homing of Multiple Myeloma Cells via the MOB1B-Mediated Hippo-YAP/TAZ Pathway.

Advanced Science
Shengjun FanYubin Kang

Abstract

The roles of mitochondrial dysfunction in carcinogenesis remain largely unknown. The effects of PTEN-induced putative kinase 1 (PINK1)-dependent mitophagy on the pathogenesis of multiple myeloma (MM) are determined. The levels of the PINK1-dependent mitophagy markers PINK1 and parkin RBR E3 ubiquitin protein ligase (PARK2) in CD138+ plasma cells are reduced in patients with MM and correlate with clinical outcomes in myeloma patients. Moreover, the induction of PINK1-dependent mitophagy with carbonylcyanide-m-chlorophenylhydrazone (CCCP) or salinomycin, or overexpression of PINK1 leads to inhibition of transwell migration, suppression of myeloma cell homing to calvarium, and decreased osteolytic bone lesions. Furthermore, genetic deletion of pink1 accelerates myeloma development in a spontaneous X-box binding protein-1 spliced isoform (XBP-1s) transgenic myeloma mouse model and in VK*MYC transplantable myeloma recipient mice. Additionally, treatment with salinomycin shows significant antimyeloma activities in vivo in murine myeloma xenograft models. Finally, the effects of PINK1-dependent mitophagy on myeloma pathogenesis are driven by the activation of the Mps one binder kinase activator (MOB1B)-mediated Hippo pathway and the s...Continue Reading

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Citations

Oct 22, 2020·Cell Death & Disease·Dongying WangTianmin Xu
Nov 28, 2020·Pharmacology & Therapeutics·Michele AventaggiatoMarco Tafani
Jul 3, 2021·Cancers·Giampaolo MorcianoCarlotta Giorgi

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Methods Mentioned

BETA
confocal microscopy
Xenograft
bioluminescence imaging
PCR
Transgenic
electrophoresis
GTPase
Protein Assay
X‐ray
ELISA

Software Mentioned

RT2 Profiler PCR
Avizo
Leica Application Suite Advanced Fluorescence ( LAS AF )
QuantStudio
Leica LAS ‐ AF
MitoProbe

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