Jayasankar 2022 ACS Omega

Jayasankar V, Vrdoljak N, Roma A, Ahmed N, Tcheng M, Minden MD, Spagnuolo PA (2022) Novel mango ginger bioactive (2,4,6-trihydroxy-3,5-diprenyldihydrochalcone) inhibits mitochondrial metabolism in combination with Avocatin B. ACS Omega 7:1682-93. https://doi.org/10.1021/acsomega.1c04053

» PMID: 35071863 Open Access

Jayasankar V, Vrdoljak N, Roma A, Ahmed N, Tcheng M, Minden MD, Spagnuolo PA (2022) ACS Omega

Abstract: Acute myeloid leukemia (AML) is an aggressive blood cancer with limited effective chemotherapy options and negative patient outcomes. Food-derived molecules such as avocatin B (Avo B), a fatty-acid oxidation (FAO) inhibitor, are promising novel therapeutics. The roots of the Curcuma amada plants have been historically used in traditional medicine, but isolated bioactive compounds have seldom been studied. Here, we report that 2,4,6-trihydroxy-3,5-diprenyldihydrochalcone (M1), a bioactive from C. Amada, possesses novel anticancer activity. This in vitro study investigated the antileukemia properties of M1 and its effects on mitochondrial metabolism. In combination with Avo B, M1 synergistically reduced AML cell line viability and patient-derived clonogenic growth with no effect on normal peripheral blood stem cells. Mechanistically, M1 alone inhibited mitochondria complex I, while the M1/Avo B combination inhibited FAO by 60 %, a process essential to the synergy. These results identified a novel food-derived bioactive and its potential as a novel chemotherapeutic for AML.

• Bioblast editor: Gnaiger E • O2k-Network Lab: CA Guelph Ballantyne JS

Correction: FADH₂ and Complex II

FADH₂ is shown as the substrate feeding electrons into Complex II (CII). This is wrong and requires correction - for details see Gnaiger (2024).

Gnaiger E (2024) Complex II ambiguities ― FADH₂ in the electron transfer system. J Biol Chem 300:105470. https://doi.org/10.1016/j.jbc.2023.105470 - »Bioblast link«

Labels: MiParea: Respiration, Pharmacology;toxicology 

Preparation: Permeabilized cells 

Coupling state: OXPHOS  Pathway: F, N  HRR: Oxygraph-2k