Signal-amplified detection of the tumor biomarker FEN1 based on cleavage-induced ligation of a dumbbell DNA probe and rolling circle amplification

B Li, A Xia, S Xie, L Lin, Z Ji, T Suo, X Zhang… - Analytical …, 2021 - ACS Publications
Flap endonuclease 1 (FEN1), an endogenous nuclease with the ability to cleave the 5′
overhang of branched dsDNA, is of significance in DNA replication and repair. The …

Dual-mode FEN1 activity detection based on Nt. BstNBI-induced tandem signal amplification

H Yang, C Wang, E Xu, W Wei, Y Liu, S Liu - Analytical Chemistry, 2021 - ACS Publications
Flap endonuclease 1 (FEN1) is a structure-specific nuclease that cleaves the 5′ single-
stranded protrusion (also known as 5′ flap) during Okazaki fragment processing. It is …

Fluorometric detection of cancer marker FEN1 based on double-flapped dumbbell DNA nanoprobe functionalized with silver nanoclusters

B Li, P Zhang, B Zhou, S Xie, A Xia, T Suo, S Feng… - Analytica Chimica …, 2021 - Elsevier
Abstract Flap endonuclease 1 (FEN1), a ubiquitous enzyme involved in DNA repair and
replication, is overexpressed in highly proliferative cancer cells. FEN1 has been recognized …

A magnetic separation-assisted cascade hybridization chain reaction amplification strategy for sensitive detection of flap endonuclease 1

L Zhang, X Liu, N Zhang, X Liu, W Jiang - Sensors and Actuators B …, 2022 - Elsevier
Sensitive and accurate detection of flap endonuclease 1 (FEN1) is essential to understand
its roles in DNA replication and repair and explore its functions in tumor diagnosis and …

Exponential amplification reaction-based fluorescent sensor for the sensitive detection of tumor biomarker flap endonuclease 1

B Zhou, L Lin, B Li - Sensors and Actuators B: Chemical, 2021 - Elsevier
Abstract Flap endonuclease 1 (FEN1) is a nuclease overexpressed in cells with a high
replicate rate, which has been recognized as a potential biomarker in the molecular …

Fluorescent assay of FEN1 activity with nicking enzyme-assisted signal amplification based on ZIF-8 for imaging in living cells

Y Tang, W Wei, Y Liu, S Liu - Analytical Chemistry, 2021 - ACS Publications
Flap endonuclease 1 (FEN1) participates in both DNA replication and repair to maintain the
stability and integrity of the genome. As a potential tumor marker, detecting FEN1 activity …

Label-free imaging of flap endonuclease 1 in living cells by assembling original and multifunctional nanoprobe

C Wang, D Zhang, Y Tang, W Wei, Y Liu… - ACS Applied Bio …, 2020 - ACS Publications
Flap endonuclease 1 (FEN1) becomes a potential tumor marker since it is closely related to
cancer occurrence and development. Here, a poly dA20-mediated nanoprobe (AuNPs-poly …

Versatile types of DNA-based nanobiosensors for specific detection of cancer biomarker FEN1 in living cells and cell-free systems

H Zhang, S Ba, D Mahajan, JY Lee, R Ye, F Shao… - Nano Letters, 2018 - ACS Publications
Flap structure-specific endonuclease 1 (FEN1) is overexpressed in various types of human
cancer cells and has been recognized as a promising biomarker for cancer diagnosis in the …

Fluorescence imaging of FEN1 activity in living cells based on controlled-release of fluorescence probe from mesoporous silica nanoparticles

Y Tang, D Zhang, Y Lu, S Liu, J Zhang, Y Pu… - Biosensors and …, 2022 - Elsevier
Abstract Flap endonuclease 1 (FEN1) is a structure-specific nuclease, which catalyzes the
removal of 5′ overhanging DNA flap from a specific DNA structure. FEN1 has been …

Complementary non-radioactive assays for investigation of human flap endonuclease 1 activity

D Dorjsuren, D Kim, DJ Maloney… - Nucleic acids …, 2011 - academic.oup.com
FEN1, a key participant in DNA replication and repair, is the major human flap
endonuclease that recognizes and cleaves flap DNA structures. Deficiencies in FEN1 …