A carbon nanotube reporter of microRNA hybridization events in vivo
Journal Article
·
· Nature Biomedical Engineering (Online)
- Memorial Sloan Kettering Cancer Center, New York City, NY (United States). Molecular Pharmacology Program; Weill Cornell Medical College, New York City, NY (United States). Dept. of Pharmacology; OSTI
- Memorial Sloan Kettering Cancer Center, New York City, NY (United States). Molecular Pharmacology Program
- Memorial Sloan Kettering Cancer Center, New York City, NY (United States). Molecular Pharmacology Program; Weill Cornell Medical College, New York City, NY (United States). Dept. of Pharmacology
- Lehigh Univ., Bethlehem, PA (United States). Dept. of Chemical and Biomolecular Engineering
- Univ. of Rhode Island, Kingston, RI (United States). Dept. of Chemical Engineering
MicroRNAs and other small oligonucleotides in biofluids are promising disease biomarkers, yet conventional assays require complex processing steps that are unsuitable for point-of-care testing or for implantable or wearable sensors. Single-walled carbon nanotubes are an ideal material for implantable sensors, owing to their emission in the near-infrared spectral region, photostability and exquisite sensitivity. In this, we report an engineered carbon-nanotube-based sensor capable of real-time optical quantification of hybridization events of microRNA and other oligonucleotides. The mechanism of the sensor arises from competitive effects between displacement of both oligonucleotide charge groups and water from the nanotube surface, which result in a solvatochromism-like response. The sensor, which allows for detection via single-molecule sensor elements and for multiplexing by using multiple nanotube chiralities, can monitor toehold-based strand-displacement events, which reverse the sensor response and regenerate the sensor complex. We also show that the sensor functions in whole urine and serum, and can non-invasively measure DNA and microRNA after implantation in live mice.
- Research Organization:
- Lawrence Berkeley National Laboratory-National Energy Research Scientific Computing Center; Lehigh Univ., Bethlehem, PA (United States)
- Sponsoring Organization:
- American Cancer Society (ACS); National Inst. of Health (NIH); National Science Foundation (NSF); Ovarian Cancer Research Fund Alliance (OCRFA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- Contributing Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Grant/Contract Number:
- AC02-05CH11231; SC0013979
- OSTI ID:
- 1462350
- Alternate ID(s):
- OSTI ID: 1490254
- Journal Information:
- Nature Biomedical Engineering (Online), Journal Name: Nature Biomedical Engineering (Online) Journal Issue: 4 Vol. 1; ISSN 2157-846X
- Country of Publication:
- United States
- Language:
- English
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