Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Old Drug, New Delivery Strategy: MMAE Repackaged
Δημιουργός/Συγγραφέας:	Lahnif, Hanane Grus, Tilmann Salvanou, Evangelia-Alexandra Deligianni, Elisavet [EL] Στέλλας, Δημήτρης[EN] Stellas, Dimitris Bouziotis, Penelope Rösch, Frank
Ημερομηνία:	2023-05-10
Γλώσσα:	Αγγλικά
ISSN:	1422-0067
DOI:	10.3390/ijms24108543
Άλλο:	37239890
Περίληψη:	Targeting therapy is a concept that has gained significant importance in recent years, especially in oncology. The severe dose-limiting side effects of chemotherapy necessitate the development of novel, efficient and tolerable therapy approaches. In this regard, the prostate specific membrane antigene (PSMA) has been well established as a molecular target for diagnosis of, as well as therapy for, prostate cancer. Although most PSMA-targeting ligands are radiopharmaceuticals used in imaging or radioligand therapy, this article evaluates a PSMA-targeting small molecule-drug conjugate, and, thus, addresses a hitherto little-explored field. PSMA binding affinity and cytotoxicity were determined in vitro using cell-based assays. Enzyme-specific cleavage of the active drug was quantified via an enzyme-based assay. Efficacy and tolerability in vivo were assessed using an LNCaP xenograft model. Histopathological characterization of the tumor in terms of apoptotic status and proliferation rate was carried out using caspase-3 and Ki67 staining. The binding affinity of the Monomethyl auristatin E (MMAE) conjugate was moderate, compared to the drug-free PSMA ligand. Cytotoxicity in vitro was in the nanomolar range. Both binding and cytotoxicity were found to be PSMA-specific. Additionally, complete MMAE release could be reached after incubation with cathepsin B. In vivo, the MMAE conjugate displayed good tolerability and dose-dependent inhibition of tumor growth. Immunohistochemical and histological studies revealed the antitumor effect of MMAE.VC.SA.617, resulting in the inhibition of proliferation and the enhancement of apoptosis. The developed MMAE conjugate showed good properties in vitro, as well as in vivo, and should, therefore, be considered a promising candidate for a translational approach.
Τίτλος πηγής δημοσίευσης:	International journal of molecular sciences
Τόμος/Κεφάλαιο:	24
Τεύχος:	10
Θεματική Κατηγορία:	[EL] Νεοπλάσματα. Όγκοι. Ογκολογία (περ. Καρκίνος, κακινογόνες ουσίες)[EN] Neoplasms. Tumors. Oncology (Incl.cancer, carcinogens) [EL] Βιοχημεία[EN] Biochemistry [EL] Ανοσολογία[EN] Immunology [EL] Κυτταρολογία[EN] Cytology [EL] Φαρμακευτική χημεία[EN] Pharmaceutical chemistry
Λέξεις-Κλειδιά:	MMAE PSMA Drug targeting Prostate cancer Small molecule–drug conjugates Therapeutic efficacy
Κάτοχος πνευματικών δικαιωμάτων:	© 2023 by the authors. Licensee MDPI, Basel, Switzerland.
Όροι και προϋποθέσεις δικαιωμάτων:	This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://www.mdpi.com/1422-0067/24/10/8543
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο