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TitleApoptolidin family glycomacrolides target leukemia through inhibition of ATP synthase.
Journal, issue, pagesNat Chem Biol, Vol. 18, Issue 4, Page 360-367, Year 2022
Publish dateDec 2, 2021
AuthorsBenjamin J Reisman / Hui Guo / Haley E Ramsey / Madison T Wright / Bradley I Reinfeld / P Brent Ferrell / Gary A Sulikowski / W Kimryn Rathmell / Michael R Savona / Lars Plate / John L Rubinstein / Brian O Bachmann /
PubMed AbstractCancer cells have long been recognized to exhibit unique bioenergetic requirements. The apoptolidin family of glycomacrolides are distinguished by their selective cytotoxicity towards oncogene- ...Cancer cells have long been recognized to exhibit unique bioenergetic requirements. The apoptolidin family of glycomacrolides are distinguished by their selective cytotoxicity towards oncogene-transformed cells, yet their molecular mechanism remains uncertain. We used photoaffinity analogs of the apoptolidins to identify the F subcomplex of mitochondrial ATP synthase as the target of apoptolidin A. Cryogenic electron microscopy (cryo-EM) of apoptolidin and ammocidin-ATP synthase complexes revealed a novel shared mode of inhibition that was confirmed by deep mutational scanning of the binding interface to reveal resistance mutations which were confirmed using CRISPR-Cas9. Ammocidin A was found to suppress leukemia progression in vivo at doses that were tolerated with minimal toxicity. The combination of cellular, structural, mutagenesis, and in vivo evidence defines the mechanism of action of apoptolidin family glycomacrolides and establishes a path to address oxidative phosphorylation-dependent cancers.
External linksNat Chem Biol / PubMed:34857958 / PubMed Central
MethodsEM (single particle)
Resolution3.1 - 4.2 Å
Structure data

23763

7md2

EMDB-23763, PDB-7md2:
The F1 region of ammocidin-bound Saccharomyces cerevisiae ATP synthase
Method: EM (single particle) / Resolution: 3.1 Å

23764

7md3

EMDB-23764, PDB-7md3:
The F1 region of apoptolidin-bound Saccharomyces cerevisiae ATP synthase
Method: EM (single particle) / Resolution: 3.3 Å

EMDB-23765:
The F1 region of inhibitor-free Saccharomyces cerevisiae ATP synthase
Method: EM (single particle) / Resolution: 4.2 Å

Chemicals

ChemComp-ATP:
ADENOSINE-5'-TRIPHOSPHATE / ATP, energy-carrying molecule*YM

ChemComp-MG:
Unknown entry

ChemComp-PO4:
PHOSPHATE ION

ChemComp-ZHD:
(3~{E},5~{Z},7~{E},9~{R},10~{S},11~{E},13~{E},15~{E},17~{R},18~{S},20~{S})-20-[(1~{R})-1-[(2~{S},3~{R},4~{R},5~{S},6~{R})-5-[(2~{S},4~{S},5~{S},6~{R})-5-[(2~{S},4~{R},5~{R},6~{R})-4,6-dimethyl-4,5-bis(oxidanyl)oxan-2-yl]oxy-6-methyl-4-oxidanyl-oxan-2-yl]oxy-3-methoxy-6-(3-methoxypropyl)-5-methyl-2,4-bis(oxidanyl)oxan-2-yl]ethyl]-5,18-dimethoxy-3,7,9,11,13,15-hexamethyl-10-[(2~{R},3~{S},4~{R},5~{R},6~{S})-6-methyl-3,4,5-tris(oxidanyl)oxan-2-yl]oxy-17-oxidanyl-1-oxacycloicosa-3,5,7,11,13,15-hexaen-2-one

ChemComp-ZH7:
(3~{E},5~{E},7~{E},9~{R},10~{R},11~{E},13~{E},17~{S},18~{S},20~{S})-18-methoxy-20-[(~{R})-[(2~{R},3~{R},4~{S},5~{R},6~{R})-6-[(2~{R})-3-methoxy-2-[(2~{R},4~{S},5~{S},6~{S})-5-[(2~{S},4~{R},5~{R},6~{R})-4-methoxy-6-methyl-5-oxidanyl-oxan-2-yl]oxy-4,6-dimethyl-4-oxidanyl-oxan-2-yl]oxy-propyl]-3,5-dimethyl-2,4-bis(oxidanyl)oxan-2-yl]-oxidanyl-methyl]-10-[(2~{R},3~{S},4~{S},5~{R},6~{S})-5-methoxy-6-methyl-3,4-bis(oxidanyl)oxan-2-yl]oxy-3,5,7,9,13-pentamethyl-17-oxidanyl-1-oxacycloicosa-3,5,7,11,13-pentaen-2-one

Source
  • saccharomyces cerevisiae (brewer's yeast)
KeywordsHYDROLASE/HYDROLASE INHIBITOR / F1-ATPase / inhibitor / anti-cancer / HYDROLASE / HYDROLASE-HYDROLASE INHIBITOR complex / TRANSLOCASE

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