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A series of pyrido[2,3-d]pyrimidine derivatives were designed and synthesized based on known CC chemokine receptor 4 (CCR4) antagonists. The activities of all the newly synthesized compounds were evaluated using a chemotaxis inhibition assay. Compound 6b was proven to be a potent CCR4 antagonist that can block cell chemotaxis induced by macrophage-derived(More)
The catalytic hairpin DNA assembly-programmed active Mg(2+)-dependent DNAzyme was proposed for dual-signal amplified detection toward protein and DNA. The protein detection was implemented with the further combination of an additional terminal protection strategy. The detection limit toward avidin and target DNA could be achieved as 2 pM and 0.5 pM,(More)
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