4.7 Article

Platinum squares with high selectivity and affinity for human telomeric G-quadruplexes

Journal

CHEMICAL COMMUNICATIONS
Volume 48, Issue 61, Pages 7607-7609

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc32942e

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Funding

  1. National Natural Science Foundation of China [21121061, 21172274]
  2. Doctoral Scientific Fund Project of the Ministry of Education of China [20100171110013]
  3. Fundamental Research Funds for the Central Universities

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Two new Pt(II) squares with quinoxaline-bridges selectively stabilize human telomeric G-quadruplexes with high binding constants (10(7)-10(9) M-1) and an unprecedented binding stoichiometric ratio of Pt(II) square/G-quadruplex (6 : 1). This selectivity is likely due to the Pt(II) squares' cube-like shape. Both Pt(II) squares also show significant telomerase inhibition and anticancer efficacy.

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