AI Article Synopsis
- Nanomaterials like silver clusters with very low atomicity show potential as pharmacological agents due to their small size and tunable properties.
- Silver clusters of three atoms (Ag -AQCs) enhance chromatin accessibility specifically during DNA replication, increasing the effectiveness of DNA-targeting cancer drugs.
- Co-administering Ag -AQCs with cisplatin (CDDP) significantly boosts the drug's binding to tumor DNA while sparing normal tissues, leading to a more effective reduction of lung tumors.
Article Abstract
Nanomaterials with very low atomicity deserve consideration as potential pharmacological agents owing to their very small size and to their properties that can be precisely tuned with minor modifications to their size. Here, it is shown that silver clusters of three atoms (Ag -AQCs)-developed by an ad hoc method-augment chromatin accessibility. This effect only occurs during DNA replication. Coadministration of Ag -AQCs increases the cytotoxic effect of DNA-acting drugs on human lung carcinoma cells. In mice with orthotopic lung tumors, the coadministration of Ag -AQCs increases the amount of cisplatin (CDDP) bound to the tumor DNA by fivefold without modifying CDDP levels in normal tissues. As a result, CDDP coadministered with Ag -AQCs more strongly reduces the tumor burden. Evidence of the significance of targeting chromatin compaction to increase the therapeutic index of chemotherapy is now provided.
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| http://dx.doi.org/10.1002/adma.201801317 | DOI Listing |
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