Diplacone Isolated from Paulownia tomentosa Mature Fruit Induces Ferroptosis-Mediated Cell Death through Mitochondrial Ca2+ Influx and Mitochondrial Permeability Transition

The recently defined type of cell death ferroptosis has garnered significant attention as a potential new approach to cancer treatment owing to its more immunogenic nature when compared with apoptosis. Ferroptosis is characterized by the depletion of glutathione (GSH)/glutathione peroxidase-4 (GPx4) and iron-dependent lipid peroxidation. Diplacone (DP), a geranylated flavonoid compound found in Paulownia tomentosa fruit, has been identified to have anti-inflammatory and anti-radical activity. In this study, the potential anticancer activity of DP was explored against A549 human lung cancer cells. It was found that DP induced a form of cytotoxicity distinct from apoptosis, which was accompanied by extensive mitochondrial-derived cytoplasmic vacuoles. DP was also shown to increase mitochondrial Ca2+ influx, reactive oxygen species (ROS) production, and mitochondrial permeability transition (MPT) pore-opening. These changes led to decreases in mitochondrial membrane potential and DP-induced cell death. DP also induced lipid peroxidation and ATF3 expression, which are hallmarks of ferroptosis. The ferroptosis inhibitors ferrostatin-1 and liproxstatin-1 were effective in counteracting the DP-mediated ferroptosis-related features. Our results could contribute to the use of DP as a ferroptosis-inducing agent, enabling studies focusing on the relationship between ferroptosis and the immunogenic cell death of cancer cells.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:24

Enthalten in:

International journal of molecular sciences - 24(2023), 8 vom: 11. Apr.

Sprache:

Englisch

Beteiligte Personen:

Kang, Myung-Ji [VerfasserIn]
Ryu, Hyung Won [VerfasserIn]
Oh, Eun Sol [VerfasserIn]
Song, Yu Na [VerfasserIn]
Huh, Yang Hoon [VerfasserIn]
Park, Ji-Yoon [VerfasserIn]
Oh, Seon Min [VerfasserIn]
Lee, Su-Yeon [VerfasserIn]
Park, Yhun Jung [VerfasserIn]
Kim, Doo-Young [VerfasserIn]
Ro, Hyunju [VerfasserIn]
Hong, Sung-Tae [VerfasserIn]
Lee, Su Ui [VerfasserIn]
Moon, Dong-Oh [VerfasserIn]
Kim, Mun-Ock [VerfasserIn]

Links:

Volltext

Themen:

Diplacone
Diplacone (DP)
Ferroptosis
GAN16C9B8O
Glutathione
Journal Article
Mitochondria permeability transition (MPT)
Mitochondrial Permeability Transition Pore
Reactive Oxygen Species
Vacuolation

Anmerkungen:

Date Completed 01.05.2023

Date Revised 09.11.2023

published: Electronic

Citation Status MEDLINE

doi:

10.3390/ijms24087057

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM356117952