PMID- 31393692 OWN - NLM STAT- MEDLINE DCOM- 20200129 LR - 20200129 IS - 1944-8252 (Electronic) IS - 1944-8244 (Linking) VI - 11 IP - 35 DP - 2019 Sep 4 TI - Regulating Fluorescent Aptamer-Sensing Behavior of Zeolitic Imidazolate Framework (ZIF-8) Platform via Lanthanide Ion Doping. PG - 31755-31762 LID - 10.1021/acsami.9b12253 [doi] AB - Nanoscale metal-organic frameworks (NMOFs) have been proved to be effective quenching platforms for fluorescent detection of DNA via fluorophore-quencher pairs. Zeolitic imidazolate framework-8 (ZIF-8) is one type of the most promising NMOFs because of its excellent biocompatibility and easy preparation. However, ZIF-8 is rarely used as platforms for fluorescence sensing of DNA because of its bad fluorescence quenching property. In this study, lanthanide ions were doped into ZIF-8 to regulate its fluorescence quenching behavior. The La(3+) doped ZIF-8 (ZIF-8-La) showed the best quenching efficiency on dye-labeled DNA. The signal-to-background ratio was around 3 times higher than ZIF-8. Furthermore, a core-shell La(3+)-doped ZIF-8 (CS-ZIF-8-La) was designed to modify more La(3+) on the surface of ZIF-8. Compared with ZIF-8-La, the CS-ZIF-8-La exhibited the same fluorescence sensing behavior toward positive-dye-labeled DNA, but showed completely contrary quenching property on the negative-dye-labeled DNA. On the basis of this phenomenon, CS-ZIF-8-La was successfully used as quenching platform for designing a ratiometric sensor for DNA and microRNA. FAU - Hao, Ya-Bo AU - Hao YB AD - Department of Pharmaceutical Analysis , China Pharmaceutical University , Nanjing 210009 , China. AD - Tianjin Key Laboratory of Food Biotechnology , Tianjin University of Commerce , Tianjin 300134 , China. FAU - Shao, Zhen-Shu AU - Shao ZS AD - Department of Pharmaceutical Analysis , China Pharmaceutical University , Nanjing 210009 , China. FAU - Cheng, Chen AU - Cheng C AD - Department of Pharmaceutical Analysis , China Pharmaceutical University , Nanjing 210009 , China. FAU - Xie, Xiao-Yu AU - Xie XY AUID- ORCID: 0000-0003-3936-3565 AD - School of Pharmacy, Health Science Center , Xi'an Jiaotong University , Xi'an 710061 , China. FAU - Zhang, Jie AU - Zhang J AD - Tianjin Key Laboratory of Food Biotechnology , Tianjin University of Commerce , Tianjin 300134 , China. FAU - Song, Wen-Jun AU - Song WJ AD - Tianjin Key Laboratory of Food Biotechnology , Tianjin University of Commerce , Tianjin 300134 , China. FAU - Wang, Huai-Song AU - Wang HS AUID- ORCID: 0000-0001-7892-018X AD - Department of Pharmaceutical Analysis , China Pharmaceutical University , Nanjing 210009 , China. LA - eng PT - Journal Article DEP - 20190820 PL - United States TA - ACS Appl Mater Interfaces JT - ACS applied materials & interfaces JID - 101504991 RN - 0 (Aptamers, Nucleotide) RN - 0 (Metal-Organic Frameworks) RN - 0 (MicroRNAs) RN - 1318-02-1 (Zeolites) RN - 6I3K30563S (Lanthanum) RN - 9007-49-2 (DNA) SB - IM MH - Aptamers, Nucleotide/*chemistry MH - DNA/*analysis MH - Fluorescence MH - HeLa Cells MH - Humans MH - Lanthanum/*chemistry MH - Metal-Organic Frameworks/*chemistry MH - MicroRNAs/*analysis MH - Zeolites/*chemistry OTO - NOTNLM OT - DNA/microRNA; OT - fluorescence quenching OT - lanthanide ions; OT - metal-organic frameworks; OT - ratiometric sensing; EDAT- 2019/08/09 06:00 MHDA- 2020/01/30 06:00 CRDT- 2019/08/09 06:00 PHST- 2019/08/09 06:00 [pubmed] PHST- 2020/01/30 06:00 [medline] PHST- 2019/08/09 06:00 [entrez] AID - 10.1021/acsami.9b12253 [doi] PST - ppublish SO - ACS Appl Mater Interfaces. 2019 Sep 4;11(35):31755-31762. doi: 10.1021/acsami.9b12253. Epub 2019 Aug 20.