A potent aminonaphthalimide platinum(IV) complex with effective antitumor activities in vitro and in vivo displaying dual DNA damage effects on tumor cells
摘要:
A new aminonaphthalimide platinum(IV) complex was developed by incorporating aminonaphthalimide, a DNA intercalator, into the platinum(IV) system. This complex displayed potent antitumor activities against all tested tumor cell lines in vitro and showed great potential in overcoming drug resistance of cisplatin. Moreover, it remarkably inhibited the growth of CT26 xenografts in BALB/c mice without severe side effects in vivo. Then, the compound exhibited a dual DNA damage antitumor mechanism that it could interact with DNA in tetravalent form via the naphthalimide group to cause DNA lesion, and the further liberation of platinum(II) complex after reduction would induce remarkable secondary damage to DNA. Meanwhile, it caused cell apoptosis through an intrinsic apoptosis pathway by up-regulating the expression of caspase 3 and caspase 9.
METHODS OF MODULATING NEUROTROPHIN-MEDIATED ACTIVITY
申请人:VOHRA Rahul
公开号:US20090082368A1
公开(公告)日:2009-03-26
Disclosed are compositions which modulate the interaction with nerve growth factor and precursors thereof with neurotrophic receptors. Also disclosed are methods of using the compositions of the invention, including methods of administration.
potential in overcoming the drugresistance of cisplatin. Furthermore, naphthalimide platinum(IV) complexes could effectively combine with HSA by electrostatic force, which would influence the drug distribution and bioactivities in vivo. Moreover, the accumulation of the tested platinum(IV) compounds in whole cells and DNA is remarkably enhanced in comparison with cisplatin and oxaliplatin.
Naphthalimide platinum(IV) antitumor complexes with potential dual DNA damage mechanism were designed, synthesized and evaluated for antitumor activities. The incorporation of DNA targeted naphthalimide group to the platinum(IV) system exerts much positive impacts on their antitumorefficacy. The mechanism research reveals that the title compounds could interact with dsDNA in platinum(IV) form via the
Methods of modulating neurotrophin-mediated activity
申请人:Babinski Kazimierz
公开号:US20070093474A1
公开(公告)日:2007-04-26
Disclosed are compositions which modulate the interaction with nerve growth factor and precursors thereof with neurotrophic receptors. Also disclosed are methods of using the compositions of the invention, including methods of administration.