PUBLICATION

Development of a Highly In Vivo Efficacious Dual Antitumor and Antiangiogenic Organoiridium Complex as a Potential Anti-Lung Cancer Agent

Authors
Gadre, S., M, M., Chakraborty, G., Rayrikar, A., Paul, S., Patra, C., Patra, M.
ID
ZDB-PUB-231003-60
Date
2023
Source
Journal of medicinal chemistry   66(19): 13481-13500 (Journal)
Registered Authors
Patra, Chinmoy, Rayrikar, Amey
Keywords
none
MeSH Terms
  • Animals
  • Antineoplastic Agents*/chemistry
  • Antineoplastic Agents*/pharmacology
  • Antineoplastic Agents*/therapeutic use
  • Cell Line, Tumor
  • Cisplatin
  • Coordination Complexes*/chemistry
  • Coordination Complexes*/pharmacology
  • Coordination Complexes*/therapeutic use
  • Humans
  • Iridium/chemistry
  • Lung Neoplasms*/drug therapy
  • Mice
  • Zebrafish
PubMed
37784224 Full text @ J. Med. Chem.
Abstract
While the phenomenal clinical success of blockbuster platinum (Pt) drugs is highly encouraging, the inherent and acquired resistance and dose-limiting side effects severely limit their clinical application. To find a better alternative with translational potential, we synthesized a library of six organo-IrIII half-sandwich [(η5-CpX)Ir(N∧N)Cl]+-type complexes. In vitro screening identified two lead candidates [(η5-CpXPh)Ir(Ph2Phen)Cl]+ (5, CpXPh = tetramethyl-phenyl-cyclopentadienyl and Ph2Phen = 4,7-diphenyl-1,10-phenanthroline) and [(η5-CpXBiPh)Ir(Ph2Phen)Cl]+ (6, CpXBiPh = tetramethyl-biphenyl-cyclopentadienyl) with nanomolar IC50 values. Both 5 and 6 efficiently overcame Pt resistance and presented excellent cancer cell selectivity in vitro. Potent antiangiogenic properties of 6 were demonstrated in the zebrafish model. Satisfyingly, 6 and its nanoliposome Lipo-6 presented considerably higher in vivo antitumor efficacy as compared to cisplatin, as well as earlier reported IrIII half-sandwich complexes in mice bearing the A549 non-small lung cancer xenograft. In particular, complex 6 is the first example of this class that exerted dual in vivo antiangiogenic and antitumor properties.
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