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TitleStructural basis of human monocarboxylate transporter 1 inhibition by anti-cancer drug candidates.
Journal, issue, pagesCell, Vol. 184, Issue 2, Page 370-383.e13, Year 2021
Publish dateJan 21, 2021
AuthorsNan Wang / Xin Jiang / Shuo Zhang / Angqi Zhu / Yafei Yuan / Hanwen Xu / Jianlin Lei / Chuangye Yan /
PubMed AbstractProton-coupled monocarboxylate transporters MCT1-4 catalyze the transmembrane movement of metabolically essential monocarboxylates and have been targeted for cancer treatment because of their ...Proton-coupled monocarboxylate transporters MCT1-4 catalyze the transmembrane movement of metabolically essential monocarboxylates and have been targeted for cancer treatment because of their enhanced expression in various tumors. Here, we report five cryo-EM structures, at resolutions of 3.0-3.3 Å, of human MCT1 bound to lactate or inhibitors in the presence of Basigin-2, a single transmembrane segment (TM)-containing chaperon. MCT1 exhibits similar outward-open conformations when complexed with lactate or the inhibitors BAY-8002 and AZD3965. In the presence of the inhibitor 7ACC2 or with the neutralization of the proton-coupling residue Asp309 by Asn, similar inward-open structures were captured. Complemented by structural-guided biochemical analyses, our studies reveal the substrate binding and transport mechanism of MCTs, elucidate the mode of action of three anti-cancer drug candidates, and identify the determinants for subtype-specific sensitivities to AZD3965 by MCT1 and MCT4. These findings lay out an important framework for structure-guided drug discovery targeting MCTs.
External linksCell / PubMed:33333023
MethodsEM (single particle)
Resolution2.95 - 3.3 Å
Structure data

EMDB-30019, PDB-6lyy:
Cryo-EM structure of the human MCT1/Basigin-2 complex in the presence of anti-cancer drug candidate AZD3965 in the outward-open conformation.
Method: EM (single particle) / Resolution: 3.2 Å

EMDB-30020, PDB-6lz0:
Cryo-EM structure of human MCT1 in complex with Basigin-2 in the presence of lactate
Method: EM (single particle) / Resolution: 3.3 Å

EMDB-30389: Cryo-EM structure of the human MCT1/Basigin-2 complex in the presence of anti-cancer drug candidate 7ACC2 in the inward-open conformation.
PDB-7cko: Cryo-EM structure of the human MCT1/Basigin-2 complex in the presence of anti-cancer drug candidate 7ACC2 in the inward-open conformation
Method: EM (single particle) / Resolution: 2.95 Å

EMDB-30391, PDB-7ckr:
Cryo-EM structure of the human MCT1/Basigin-2 complex in the presence of anti-cancer drug candidate BAY-8002 in the outward-open conformation.
Method: EM (single particle) / Resolution: 3.0 Å

EMDB-30623, PDB-7da5:
Cryo-EM structure of the human MCT1 D309N mutant in complex with Basigin-2 in the inward-open conformation.
Method: EM (single particle) / Resolution: 3.3 Å

Chemicals

ChemComp-EY0:
3-methyl-5-[[(4~{R})-4-methyl-4-oxidanyl-1,2-oxazolidin-2-yl]carbonyl]-6-[[5-methyl-3-(trifluoromethyl)-1~{H}-pyrazol-4-yl]methyl]-1-propan-2-yl-thieno[2,3-d]pyrimidine-2,4-dione

ChemComp-2OP:
(2S)-2-HYDROXYPROPANOIC ACID

ChemComp-G5L:
7-[methyl-(phenylmethyl)amino]-2-oxidanylidene-chromene-3-carboxylic acid

ChemComp-G5O:
2-[[2-chloranyl-5-(phenylsulfonyl)phenyl]carbonylamino]benzoic acid

Source
  • homo sapiens (human)
KeywordsTRANSPORT PROTEIN / Proton-coupled monocarboxylate transporter / MCT1 / Basigin / anti-cancer / AZD3965 / BAY-8002 / 7ACC2 / single particle cryo-EM / latate transporter / lactate transporter / Basigin-2 / anti-cancer drug candidate

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