The present disclosure provides compositions and methods related to transcription factor systems. Such systems provide for modular and tunable protein expression driven by regulated transcriptional activity.

The present disclosure provides for systems, methods, and compositions for targeting nucleic acids. In particular, the invention provides mutated Cas13 proteins and their use in modifying target sequences as well as mutated Cas13 nucleic acid sequences and vectors encoding mutated Cas13 proteins and vector systems or CRISPR-Cas13 systems.

Provided are a fusion protein that improves gene editing efficiency and an application thereof. The fusion protein comprises a single-stranded DNA binding protein functional domain, nucleoside deaminase and nuclease. According to CBEs, when carrying our base conversion from C-G to T-A, nucleoside deaminase such as cytosine deaminase carries out deamination by using single-stranded DNA as a substrate, and by re-fusing the single-stranded DNA binding protein functional domain on the fusion protein of the nucleoside deaminase and nuclease, the chance of single-stranded DNA being exposed to the nucleoside deaminase is greatly increased, thereby significantly improving base editing efficiency. The present disclosure provides a breakthrough improvement of single-base gene editing technology and can greatly promote the application thereof in aspects such as gene editing, gene therapy, cell therapy, animal model making, and crop genetic breeding.

The present invention relates to methods for developing engineered T-cells for immunotherapy and more specifically to methods for modifying T-cells by inactivating at immune checkpoint genes, preferably at least two selected from different pathways, to increase T-cell immune activity This method involves the use of specific rare cutting endonucleases, in particular TALE-nucleases (TAL effector endonuclease) and polynucleotides encoding such polypeptides, to precisely target a selection of key genes in T-cells, which are available from donors or from culture of primary cells. The invention opens the way to highly efficient adoptive immunotherapy strategies for treating cancer and viral infections.

Disclosed herein are polypeptides, polynucleotides encoding, cells and organisms comprising novel DNA-binding domains, including TALE DNA-binding domains. Also disclosed are methods of using these novel DNA-binding domains for modulation of gene expression and/or genomic editing of endogenous cellular sequences.

A composition of matter comprising a fusion protein attached to the outer surface of a substrate is disclosed. The fusion protein comprises a light-generating protein and a light-transducing protein. Uses of the composition of matter are disclosed.

Provided herein are artificial transcription factor systems and related methods for modulating gene expression.

The present invention provides agents and compositions for modulating expression (e.g., enhanced or reduced expression) of a hepatocyte nuclear factor 4 alpha (HNF4a) gene by targeting an HNF4α expression control region and methods of use thereof for treating an HNF4α associated disorder, e.g., cirrhosis.

The present disclosure relates generally to methods and compositions for modulating frataxin (FXN) expression, e.g., to treat Friedreich ataxia (FRDA).

Aspects of the disclosure relate to compositions and methods for regulation of transgene (e.g., miRNAs, shRNAs or coding sequences) expression from viral vectors. In some embodiments, the disclosure provides expression constructs comprising a viral vector encoding one or more transgenes, the expression of which is regulated by a rapamycin/rapalog-based system.