Review Article

Integration of Mitochondrial Targeting for Molecular Cancer Therapeutics

Table 2

Prototypic examples of novel anticancer strategies combining oncogenic kinases and mitochondrial activity inhibitors.

Inhibitor of oncogenic driver
(target; drug)
Induction of mitochondrial addictionMechanism(s) of mitochondrial activationCombination (target; drug)Cancer type; cell type; experimental modelsAnticancer effects on cells resistant to targeted therapyReference

PI3K inhibitor;
PX-866
+Paradoxical activation of mitochondrial Akt2 and thereby of cyclophilin D phosphorylationCyclophilin D inhibitor;
Gamitrinib
Glioblastoma, breast and lung adenocarcinoma;
cell lines and patient organotypic culture;
in vitro and in vivo (xenograft models)
nd[34]

MEK inhibitor; Selumetinib+/−MITF-PGC-1α axis regulated by mTORC1/2mTORC1/2 inhibitor;
AZD 8055
Subpopulation of melanoma with high levels of OXPHOS;
cell lines and tumor biopsies;
in vitro and in vivo (xenograft models)
+[35]

TKI such as BCRABL inhibitor (imatinib) or FLT3 inhibitor (quirzatinib)+Pyruvate entry in the TCA cycleOligomycin A
(at low nmol/L concentrations)
BCRABL+ CM leukemia
FLT3 ITD AML;
cell lines;
in vitro and in vivo (mouse leukemia models)
nd[36]

MEK inhibitor (AZD8330) and dual PI3K/mTOR inhibitor (BEZ235)+Mitochondrial biogenesis and activityOligomycin APancreatic ductal adenocarcinoma
with mutated KRAS;
cell lines;
in vitro and in vivo (genetically engineered mouse models)
nd[37] 

Mutated BRAF inhibitor (vemurafenib)+PGC-1α dependent and independent pathwaysMitochondrial-targeted prooxidative drug, elesclomol
-KCN
Melanoma;
cell lines and patient biopsies;
in vitro and in vivo (patient-derived tumor xenograft models)
cell lines
+

+JARID positive slow cycling melanoma
[19] 


[38]
+PhenforminMelanoma;
cell lines;
in vitro and in vivo (genetically engineered mouse models)
Delay the onset of acquired resistance to BRAFi[39]
+PGC-1α dependent mitochondrial biogenesisOligomycin AMelanoma;
cell lines and clinical samples;
in vitro and in vivo (xenograft models)
+JARID positive slow cycling melanoma [40, 41]
ndndPDK inhibitor (DCA)Melanoma;
cell lines;
In vitro
nd[28]
ndndMetforminMelanoma patients; retrospective analysis of clinical recordsNot significant[42]

Akt inhibitorndndMetforminAcute myeloid leukemia;
cell lines;
in vitro and in vivo (xenograft models)
nd[22]

Multiple kinase inhibitor
(sorafenib)
ndndPDK inhibitor (DCA)Hepatocarcinoma; cell lines;
in vitro and in vivo (xenograft models)
+[25]