Abstract:
:Intrinsic apoptosis is critical to prevent tumor formation and is engaged by many anti-cancer agents to eliminate tumor cells. BAX and BAK, the two essential mediators of apoptosis, are thought to be regulated through similar mechanisms and act redundantly to drive apoptotic cell death. From an unbiased genome-wide CRISPR/Cas9 screen, we identified VDAC2 (voltage-dependent anion channel 2) as important for BAX, but not BAK, to function. Genetic deletion of VDAC2 abrogated the association of BAX and BAK with mitochondrial complexes containing VDAC1, VDAC2, and VDAC3, but only inhibited BAX apoptotic function. Deleting VDAC2 phenocopied the loss of BAX in impairing both the killing of tumor cells by anti-cancer agents and the ability to suppress tumor formation. Together, our studies show that efficient BAX-mediated apoptosis depends on VDAC2, and reveal a striking difference in how BAX and BAK are functionally impacted by their interactions with VDAC2.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Chin HS,Li MX,Tan IKL,Ninnis RL,Reljic B,Scicluna K,Dagley LF,Sandow JJ,Kelly GL,Samson AL,Chappaz S,Khaw SL,Chang C,Morokoff A,Brinkmann K,Webb A,Hockings C,Hall CM,Kueh AJ,Ryan MT,Kluck RM,Bouillet P,Herolddoi
10.1038/s41467-018-07309-4subject
Has Abstractpub_date
2018-11-26 00:00:00pages
4976issue
1issn
2041-1723pii
10.1038/s41467-018-07309-4journal_volume
9pub_type
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