Abstract: Herein provided is a novel method, nanoPARE (parallel analysis of RNA ends from low-input RNA), for generating multiple sequencing libraries from a single full-length cDNA library, specifically an RNA 5? end sequencing library and/or a gene body cDNA library, and method for analyzing RNA 5? ends, and optionally associated software developed therefor. Further provided is a cDNA library generated therefor.

Abstract: Provided herein are methods and systems for amplifying and/or detecting target double-stranded or single-stranded nucleic acids. The methods comprise combining a sample comprising the target nucleic acid with an amplification reaction mixture, amplifying the target nucleic acid, and further amplifying the target nucleic acid by repeated opening, unwinding, annealing and extension under isothermal conditions. The amplification reaction mixture may include an amplification CRISPR system, a helicase, a primer pair, and a polymerase. The amplification CRISPR system may comprise a first and second CRISPR/Cas complex, the first and second CRISPR/Cas complex may comprise a first CRISPR/Cas enzyme and a first guide molecule that guides the first CRISPR/Cas complex to a first strand of the target nucleic acid; the second CRISPR/Cas complex may comprise a second CRISPR/Cas enzyme and a second guide molecule that guides the second CRISPR/Cas complex to a second strand of the target nucleic acid.

Abstract: The embodiments disclosed herein utilized RNA targeting effectors to provide robust CRISPR-based nucleic acid amplification methods and systems. Embodiments disclosed herein can amplify both double-stranded and single-stranded nucleic acid targets. Moreover, the embodiments disclosed herein can be combined with various detection platforms, for example, CRISPR-SHERLOCK, to achieve detection and diagnostic with attomolar sensitivity. Such embodiments are useful in multiple scenarios in human health including, for example, viral detection, bacterial strain typing, sensitive genotyping, and detection of disease-associated cell free DNA.

Abstract: Provided herein are methods and systems for detecting a target nucleic acid sequence. The method comprises contacting an oligonucleotide comprising the target nucleic acid sequence with a transposon complex; inserting one or more T7 RNA promoters into the oligonucleotide using the transposase; and (c) amplifying the target nucleic acid sequence. The transposon complex may comprise a transposase and a transposon sequence comprising one or more T7 RNA promoters. The target nucleic sequence may be amplified by generating RNA oligonucleotides comprising the target nucleic acid sequence via transcription from the inserted one or more T7 RNA promoters. The amplified target nucleic acid may be detected using a CRISPR Cas13-based detection system.