Harmaline to Human Mitochondrial Caseinolytic Serine Protease Activation for Pediatric Diffuse Intrinsic Pontine Glioma Treatment

Diffuse intrinsic pontine glioma (DIPG), affecting children aged 4-7 years, is a rare, aggressive tumor that originates in the pons and then spreads to nearby tissue. DIPG is the leading cause of death for pediatric brain tumors due to its infiltrative nature and inoperability. Radiotherapy has only a palliative effect on stabilizing symptoms. In silico and preclinical studies identified ONC201 as a cytotoxic agent against some human cancer cell lines, including DIPG ones. A single-crystal X-ray analysis of the complex of the human mitochondrial caseinolytic serine protease type C (hClpP) and ONC201 (PDB ID: 6DL7) allowed hClpP to be identified as its main target. The hyperactivation of hClpP causes damage to mitochondrial oxidative phosphorylation and cell death. In some DIPG patients receiving ONC201, an acquired resistance was observed. In this context, a wide program was initiated to discover original scaffolds for new hClpP activators to treat ONC201-non-responding patients. Harmaline, a small molecule belonging to the chemical class of β-carboline, was identified through Fingerprints for Ligands and Proteins (FLAP), a structure-based virtual screening approach. Molecular dynamics simulations and a deep in vitro investigation showed interesting information on the interaction and activation of hClpP by harmaline.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:17

Enthalten in:

Pharmaceuticals (Basel, Switzerland) - 17(2024), 1 vom: 19. Jan.

Sprache:

Englisch

Beteiligte Personen:

Miciaccia, Morena [VerfasserIn]
Rizzo, Francesca [VerfasserIn]
Centonze, Antonella [VerfasserIn]
Cavallaro, Gianfranco [VerfasserIn]
Contino, Marialessandra [VerfasserIn]
Armenise, Domenico [VerfasserIn]
Baldelli, Olga Maria [VerfasserIn]
Solidoro, Roberta [VerfasserIn]
Ferorelli, Savina [VerfasserIn]
Scarcia, Pasquale [VerfasserIn]
Agrimi, Gennaro [VerfasserIn]
Zingales, Veronica [VerfasserIn]
Cimetta, Elisa [VerfasserIn]
Ronsisvalle, Simone [VerfasserIn]
Sipala, Federica Maria [VerfasserIn]
Polosa, Paola Loguercio [VerfasserIn]
Fortuna, Cosimo Gianluca [VerfasserIn]
Perrone, Maria Grazia [VerfasserIn]
Scilimati, Antonio [VerfasserIn]

Links:

Volltext

Themen:

DIPG
HClpP activation
Harmaline
Journal Article
Molecular modeling

Anmerkungen:

Date Revised 29.01.2024

published: Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.3390/ph17010135

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM367664232