3 research outputs found
Additional file 1 of SLC25A17 inhibits autophagy to promote triple-negative breast cancer tumorigenesis by ROS-mediated JAK2/STAT3 signaling pathway
Supplementary Material
Nanosensor-Driven Detection of Neuron-Derived Exosomal Aβ<sub>42</sub> with Graphene Electrolyte-Gated Transistor for Alzheimer’s Disease Diagnosis
Blood-based
tests have sparked tremendous attention in non-invasive
early diagnosis of Alzheimer’s disease (AD), a most prevalent
neurodegenerative malady worldwide. Despite significant progress in
the methodologies for detecting AD core biomarkers such as Aβ42 from serum/plasma, there remains cautious optimism going
forward due to its controversial diagnostic value and disease relevance.
Here, a graphene electrolyte-gated transistor biosensor is reported
for the detection of serum neuron-derived exosomal Aβ42 (NDE-Aβ42), which is an emerging, compelling trove
of blood biomarker for AD. Assisted by the antifouling strategy with
the dual-blocking process, the noise against complex biological background
was considerably reduced, forging an impressive sensitivity gain with
a limit of detection of 447 ag/mL. An accurate detection of SH-SY5Y-derived
exosomal Aβ42 was also achieved with highly conformable
enzyme-linked immunosorbent assay results. Importantly, the clinical
analysis for 27 subjects revealed the immense diagnostic value of
NDE-Aβ42, which can outclass that of serum Aβ42. The developed electronic assay demonstrates, for the first
time, nanosensor-driven NDE-Aβ42 detection, which
enables a reliable discrimination of AD patients from non-AD individuals
and even the differential diagnosis between AD and vascular dementia
patients, with an accuracy of 100% and a Youden index of 1. This NDE-Aβ42 biosensor defines a robust approach for blood-based confident
AD ascertain
Tandem Cas13a/crRNA-Mediated CRISPR-FET Biosensor: A One-for-All Check Station for Virus without Amplification
The path toward field-effect transistor (FET) application
from
laboratory to clinic has delivered a compelling push in the biomedical
domain, yet ultrasensitive and timely pathogen identification without
PCR remains a long-lasting challenge. Herein, we create a generic
check station termed “CRISPR-FET”, first incorporating
the CRISPR/Cas13a system within the FET modality, for accelerated
and unamplified detection of viral RNA. Unlike conventional FETs bearing
target-specific receptors, this sensor holds three unique advancements:
(i) an ingenious sensing mechanism is used, which converts the signal
of a large-sized analyte into an on-chip cleavage response of an immobilized
CRISPR reporter, enabling signal generation events to occur all within
the Debye length; (ii) the multipurpose inspection of the CoV ORF1ab,
CoV N gene, and HCV RNA unveils the potential for “one-for-all”
scalable FET-based molecular diagnostics; and (iii) it is shown that
Cas13a-crRNAs targeting different sites of the viral genome can be
deployed in tandem to amplify the FET response, empowering the detection
limit down to 1.56 aM, which is a world-record level of sensitivity
in the FET for direct viral gene sensing. Notably, a brilliant clinical
applicability was made in distinguishing HCV-infected patients from
normal controls. Overall, this study sheds new insights into FET-based
nucleic acid sensing technology and invokes a vision for its possible
future roles in diagnosis of various viral diseases