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MCL1 modulates mTORC1 signaling to promote bioenergetics and tumorigenesis

  • Wentao Gui
  • , Petr Paral
  • , Bhavuk Dhamija
  • , Eman Hagag
  • , Martin Dusa
  • , Jana Humajova
  • , Pavla V Francova
  • , Jan Kucka
  • , Jan Pankrac
  • , Caroline Schütz
  • , Vasileios Armenis
  • , Filippo Ferrucci
  • , Mario Schubert
  • , Kaomei Guan
  • , Franziska Baenke
  • , Daniel E Stange
  • , Lorenz H Lehmann
  • , Wolfram Weckwerth
  • , Peter Mirtschink
  • , Sofia Traikov
  • Belmonte Giuseppe, Clelia Miracco, Martin Bornhäuser, Saverio Minucci, Ludek Sefc, Libor Macurek, Mohamed Elgendy (Korresp. Autor*in)

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

Abstract

Myeloid cell leukemia-1 (MCL1) is among the most overexpressed proteins in tumors. MCL1 contributes to tumorigenesis by antagonizing apoptosis. However, apoptosis-unrelated functions are emerging. Screening an array of signaling switches identifies mTORC1 to be modulated by MCL1 but not by the anti-apoptotic Bcl-2 or Bcl-xL. mTORC1 is a central metabolic regulator. MCL1 impacts metabolism via modulating the expression of hexokinase 2 (HK2) in an mTORC1-dependent manner, which ultimately contributes to the tumor-promoting effects of MCL1. MCL1 inhibitors suppress mTORC1 in tumor cells but are associated with cardiotoxicity due to mTORC1 inhibition in the heart. Dietary leucine supplementation rescues mTORC1 signaling in the hearts of humanized Mcl-1 mice and greatly ameliorates the cardiotoxicity of MCL1 inhibitors. Taken together, here we describe tumor-promoting roles for MCL1 in regulating mTORC1 signaling and subsequently in bioenergetics, besides its role in antagonizing apoptosis, identifying MCL1 as a hinge of cell bioenergetics and survival.

OriginalspracheEnglisch
Aufsatznummer10841
FachzeitschriftNature Communications
Jahrgang16
Ausgabenummer1
DOIs
PublikationsstatusVeröffentlicht - 1 Dez. 2025

Fördermittel

We are thankful to Dr. Manja Wobus for providing AML cells and to Dr. David Huang and Dr. Anna García-Saéz for providing WT and Bax/Bak DKO MEFs and to Dr Marco Herold for providing the huMcl-1 mice. We are also thankful for Dr. Tomáš Mráček and Dr. Alena Pecinová for their kind help with metabolic analysis of heart tissues. M.E. has received funding from the European Research Council (ERC) under Horizon 2020 research and innovation programme (Onco-Energetics_OFF, grant agreement no. 852761) and the German Research Foundation (Project No. EL 1081/2-1) and has received partial support from Czech Science Foundation (GACR) (project no. 19-22156Y). L.S. has received funding from The Czech Science Foundation (GACR) Lead Agency (Weave) (Project No. 22-16819 K) and Czech-BioImaging large RI project (LM2023050 funded by MEYS CR) and GACR European Regional Development Fund (Project No. CZ.02.1.01/0.0/0.0/16_013/0001775) supported imaging lab and instrument funding. P. V.-F. has been partially supported as a student by Charles University grant SVV 260519/2023. L.M. and W.G. were partially supported by the National Institute for Cancer Research (Programme EXCELES, ID Project No. LX22NPO5102).

UN SDGs

Dieser Output leistet einen Beitrag zu folgendem(n) Ziel(en) für nachhaltige Entwicklung

  1. SDG 3 – Gesundheit und Wohlergehen
    SDG 3 – Gesundheit und Wohlergehen

ÖFOS 2012

  • 301904 Krebsforschung

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