Advancements in a FRET Biosensor for Live-Cell Fluorescence-Lifetime High-Throughput Screening of Alpha-Synuclein.
Advancements in a FRET Biosensor for Live-Cell Fluorescence-Lifetime High-Throughput Screening of Alpha-Synuclein.
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α-突触核蛋白的活细胞荧光高通量筛选的FRET生物传感器中的进步。
DOI:
10.1177/17590914231184086
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发表时间:
2023-01
期刊:
影响因子:
4.7
通讯作者:
Sachs, Jonathan N.
中科院分区:
文献类型:
--
作者:
Braun, Anthony R.;Kochen, Noah Nathan;Yuen, Samantha L.;Liao, Elly E.;Cornea, Razvan L.;Thomas, David D.;Sachs, Jonathan N.
There is a critical need for small molecules capable of rescuing pathophysiological phenotypes induced by alpha-synuclein (aSyn) misfolding and oligomerization. Building upon our previous aSyn cellular fluorescence lifetime (FLT)-Förster resonance energy transfer (FRET) biosensors, we have developed an inducible cell model incorporating the red-shifted mCyRFP1/mMaroon1 (OFP/MFP) FRET pair. This new aSyn FRET biosensor improves the signal-to-noise ratio, reduces nonspecific background FRET, and results in a 4-fold increase (transient transfection) and 2-fold increase (stable, inducible cell lines) in FRET signal relative to our previous GFP/RFP aSyn biosensors. The inducible system institutes greater temporal control and scalability, allowing for fine-tuning of biosensor expression and minimizes cellular cytotoxicity due to overexpression of aSyn. Using these inducible aSyn-OFP/MFP biosensors, we screened the Selleck library of 2684 commercially available, FDA-approved compounds and identified proanthocyanidins and casanthranol as novel hits. Secondary assays validated the ability of these compounds to modulate aSyn FLT-FRET. Functional assays probing cellular cytotoxicity and aSyn fibrillization demonstrated their capability to inhibit seeded aSyn fibrillization. Proanthocyanidins completely rescued aSyn fibril-induced cellular toxicity with EC50 of 200 nM and casanthranol supported a 85.5% rescue with a projected EC50 of 34.2 μM. Furthermore, proanthocyanidins provide a valuable tool compound to validate our aSyn biosensor performance in future high-throughput screening campaigns of industrial-scale (million-compound) chemical libraries.
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影响因子:
4
作者:
Kamboj S;Harms C;Kumar L;Creamer D;West C;Klein-Seetharaman J;Sarkar SK
通讯作者:
Sarkar SK
影响因子:
--
作者:
Gruber SJ;Cornea RL;Li J;Peterson KC;Schaaf TM;Gillispie GD;Dahl R;Zsebo KM;Robia SL;Thomas DD
通讯作者:
Thomas DD
影响因子:
1.8
作者:
Young, Malaney C. C.;Vunnam, Nagamani;Rebbeck, Robyn T. T.;Yuen, Samantha L. L.;Thomas, David D. D.;Sachs, Jonathan N. N.
通讯作者:
Sachs, Jonathan N. N.
DOI:
10.1016/j.bbrc.2010.08.088
发表时间:
2010-10-01
影响因子:
3.1
作者:
Bae, Song Yi;Kim, Seulgi;Kim, T. Doohun
通讯作者:
Kim, T. Doohun
影响因子:
7.4
作者:
Kaspar, James W.;Niture, Suryakant K.;Jaiswal, Anil K.
通讯作者:
Jaiswal, Anil K.