Synthesis and Biological Evaluation of a Novel Dual-Targeting Small Molecule Drug Conjugate Modulating the Crosstalk between α5β1 Integrin and MDM2 in Glioblastoma
Federico Arrigoni, Ana Ferrari, Helena Prpić, Elena Markeviciute, Alessia Muzi, Giuseppe Roscilli, Silvia Gazzola, Umberto Piarulli
TL;DR
A new drug targeting two proteins linked to glioblastoma was developed and shown to stop cancer cell growth and reactivate a key tumor suppressor.
Contribution
A novel dual-targeting small molecule drug conjugate was designed to modulate the crosstalk between α5β1 integrin and MDM2 in glioblastoma.
Findings
The drug conjugate retained antiproliferative activity in glioblastoma cells.
It induced p53 reactivation with minimal MDM2 induction.
It caused cell cycle redistribution, suggesting a unique mechanism of action.
Abstract
Negative crosstalk between α5β1 integrin and the p53-MDM2 regulatory axis contributes to glioblastoma progression and therapeutic resistance. To explore the potential of dual inhibition of these two biological targets, the dual targeting small molecule drug conjugate (SMDC) (1) was designed by coupling the MDM2 inhibitor SAR405838 to a selective α5β1 integrin ligand cyclo(phg-isoDGR-k) (7) through a stable chemical linker. The resulting conjugate retained antiproliferative activity in U87-MG glioblastoma cells and induced p53 reactivation with minimal MDM2 induction. Cell cycle distribution analysis revealed a redistribution of cells from the G0/G1 phase to the G2/M phase exclusively upon treatment with conjugate 1, suggesting that a different mechanism of action is engaged. These findings support the potential of this dual-targeting approach through a dual-targeting SMDC as a promising…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsCell Adhesion Molecules Research · Cancer-related Molecular Pathways · Retinoids in leukemia and cellular processes