This invention discloses a nucleic acid aptamer AS1411 modified DNA tetrahedron. The preparation method includes the steps of (1) binding an AS1411 sequence to the 5 terminal of any DNA single-strand in a DNA tetrahedron, synthesizing the DNA, dissolving obtained DNA powder with ddH.sub.2O; (2) measuring an absorbance of the DNA and then calculating a total volume of the four single strands; (3) pipetting the DNA obtained in step (1) according to the calculation results in step (2), mixing the DNA with a TM buffer, mixing the mixture uniformly with vortex vibration, and performing a PCR progress. The preparation method is simple. The produced product can effectively solve the problem that the unmodified DNA tetrahedron cannot enter the nucleus and the problem that the AS1411 cannot carry drugs directly.

The present disclosure relates to methods of altering expression of a genomic locus of interest or specifically targeting a genomic locus of interest in a plant cell, which may involve contacting the genomic locus with a non-naturally occurring or engineered composition that comprises a DNA binding domain comprising one or more Transcription Activator-Like (TAL) effector monomers specifically ordered to target the genomic locus of interest to improve tolerance of the plant cell to an effective concentration of an inhibitor herbicide.

This invention discloses a nucleic acid aptamer AS1411 modified DNA tetrahedron. The preparation method includes the steps of (1) binding an AS1411 sequence to the 5 terminal of any DNA single-strand in a DNA tetrahedron, synthesizing the DNA, dissolving obtained DNA powder with ddH.sub.2O; (2) measuring an absorbance of the DNA and then calculating a total volume of the four single strands; (3) pipetting the DNA obtained in step (1) according to the calculation results in step (2), mixing the DNA with a TM buffer, mixing the mixture uniformly with vortex vibration, and performing a PCR progress. The preparation method is simple. The produced product can effectively solve the problem that the unmodified DNA tetrahedron cannot enter the nucleus and the problem that the AS1411 cannot carry drugs directly.

Disclosed herein are droplets comprising gene editing systems and barcodes. The disclosure further relates to methods for large-scale identification of genes in vivo using barcodes and methods for large-scale identification of gene function in a plurality of subjects using a plurality of droplets.

A conformationally-constrained kinked peptide includes: a conformationally-constraining portion and a kinked portion linked to the conformationally-constraining portion that conformationally constrains the kinked portion, the kinked portion comprising an endosomal-disrupting peptide. The peptide can include a peptide sequence of one of SEQ ID NOs: 1, 5-38, or 40-54 or 61-69. The conformationally-constrained kinked portion can be a majority portion or minority of the peptide. The peptide can include one of Formulae 1-1C, wherein: CC-Peptide includes a peptide that conformationally constrains the ED-KP; Peptide independently includes natural, unnatural, essential or non-essential aromatic, aliphatic, or other amino acids having L or D configuration; ED-KP includes an endosomal-disrupting kinked peptide; Xaa, Xaa1, and Xaa2 are independently one or more natural or non-natural amino acids, essential amino acids, or non-essential amino acids, or derivatives of amino acids having L or D configuration; L1 and L2 are independently linkers; and n1, n2, n3, and n4 are independently 0-50.

Provided herein, in certain embodiments, are programmable nucleases, guide nucleic acids, and complexes thereof. Certain programmable nucleases provided herein comprise a RuvC domain. Also provided herein are nucleic acids encoding said programmable nucleases and guide nucleic acids. Also provided herein are methods of genome editing, methods of regulating gene expression, and methods of detecting nucleic acids with said programmable nucleases and guide nucleic acids.

The present disclosure provides for circular RNA (circRNA) compositions and methods purification and use of the same. In particular, the disclosure relates to compositions and methods of making and using circRNA comprising one or more aptamers which specifically bind an affinity ligand.

The present invention provides a novel siRNA specifically inhibiting the expression of IL-23 and a pharmaceutical composition comprising the siRNA specifically a double stranded RNA comprising a sense strand and an antisense strand wherein each strand has 19 to 30 nucleotides and comprises the base sequence selected from SEQ ID NO: 2, SEQ ID NO: 3, SEQ ID NO: 4, SEQ ID NO: 5 or SEQ ID NO: 6 or a complementary base sequence thereof and a pharmaceutical composition comprising the double stranded RNA.