Stable tumor vessel normalization with pO2 increase and endothelial PTEN activation by inositol trispyrophosphate brings novel tumor treatment. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Molecular Medicine Année : 2013

Stable tumor vessel normalization with pO2 increase and endothelial PTEN activation by inositol trispyrophosphate brings novel tumor treatment.

Claudine Kieda
Guillaume Collet
Catherine Grillon

Résumé

Tumor hypoxia is a characteristic of cancer cell growth and invasion, promoting angiogenesis, which facilitates metastasis. Oxygen delivery remains impaired because tumor vessels are anarchic and leaky, contributing to tumor cell dissemination. Counteracting hypoxia by normalizing tumor vessels in order to improve drug and radio therapy efficacy and avoid cancer stem-like cell selection is a highly challenging issue. We show here that inositol trispyrophosphate (ITPP) treatment stably increases oxygen tension and blood flow in melanoma and breast cancer syngeneic models. It suppresses hypoxia-inducible factors (HIFs) and proangiogenic/glycolysis genes and proteins cascade. It selectively activates the tumor suppressor phosphatase and tensin homolog (PTEN) in vitro and in vivo at the endothelial cell (EC) level thus inhibiting PI3K and reducing tumor AKT phosphorylation. These mechanisms normalize tumor vessels by EC reorganization, maturation, pericytes attraction, and lowering progenitor cells recruitment in the tumor. It strongly reduces vascular leakage, tumor growth, drug resistance, and metastasis. ITPP treatment avoids cancer stem-like cell selection, multidrug resistance (MDR) activation and efficiently enhances chemotherapeutic drugs activity. These data show that counteracting tumor hypoxia by stably restoring healthy vasculature is achieved by ITPP treatment, which opens new therapeutic options overcoming hypoxia-related limitations of antiangiogenesis-restricted therapies. By achieving long-term vessels normalization, ITPP should provide the adjuvant treatment required in order to overcome the subtle definition of therapeutic windows for in vivo treatments aimed by the current strategies against angiogenesis-dependent tumors.
Fichier principal
Vignette du fichier
2013 Kieda et al J Mol Med.pdf (1.49 Mo) Télécharger le fichier
Origine : Publication financée par une institution

Dates et versions

hal-00817464 , version 1 (23-11-2020)

Licence

Paternité

Identifiants

Citer

Claudine Kieda, Bouchra El Hafny-Rahbi, Guillaume Collet, Nathalie Lamerant-Fayel, Catherine Grillon, et al.. Stable tumor vessel normalization with pO2 increase and endothelial PTEN activation by inositol trispyrophosphate brings novel tumor treatment.. Journal of Molecular Medicine, 2013, epub ahead of print. ⟨10.1007/s00109-013-0992-6⟩. ⟨hal-00817464⟩
159 Consultations
70 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More