Abstract:
The invention concerns a multicistronic nucleic acid, in particular an isolated multicistronic nucleic acid, comprising: A) a sequence comprising successively: A1) a sequence encoding the light chain variable domain of an antibody of interest, fused in the frame with A2) a sequence encoding the constant region of the light chain of an immunoglobulin Ig; and B) a sequence comprising successively: B1) a sequence encoding the heavy chain variable domain of said antibody of interest, fused in the frame with B2) a sequence encoding the constant regions of the heavy chain of an immunoglobulin Ig' in secretory form; B3) an intronic sequence of the gene of the heavy chain of said immunoglobulin Ig', said intronic sequence comprising an internal 5' splice site enabling the splicing of said intronic sequence B3) and a secretory-specific poly(A) (p AS) signal from the 3' terminal exon of said gene; B4) a sequence, in frame with sequence B1), encoding the transmembrane and cytoplasmic domains M1 and M2 of the immunoglobulin Ig' BCR, wherein said sequence B4) comprises, between the coding sequences of the M1 and M2 domains, an intronic sequence containing a splice site enabling the splicing of said intronic sequence between the M1 and M2 domains coding sequences; and B5) a membrane-anchored specific poly(A) signal (p AM), after the stop codon of the M2 domain, wherein the multicistronic nucleic acid enables the co-expression of the sequences A and B into separate proteins.
Abstract:
The invention provides recombinant adenovirus (rAd) and rAd vectors comprising a bidirectional mouse CMV (mCMV) promoter operably linked to a first transgene in one direction and to a second transgene in the opposite direction. The invention also provides methods of making and using such rAd and rAd vectors.
Abstract:
The present disclosure describes improved adeno-associated virus (AAV) vectors for gene therapy applications in the treatment of glycogen storage disease, particularly glycogen storage disease type la (GSD-Ia). Described are recombinant nucleic acid molecules, vectors and recombinant AAV that include a G6PC promoter/enhancer, a synthetic intron, a G6PC coding sequence (such as a wild-type or codon-optimized G6PC coding sequence), and stuffer nucleic acid sequence situated between the G6PC promoter/enhancer and the intron, as well as between the intron and the G6PC coding sequence. The recombinant AAVs disclosed herein exhibit highly efficient liver transduction and are capable of correcting metabolic abnormalities in an animal model of GSD-Ia.
Abstract:
Compositions and methods are provided for achieving persistent, high level expression of transgenes in vitro and in vivo. Aspects of the invention include vectors comprising an intronic cassette that comprises plasmid elements, and methods that rely on the use of vectors comprising an intronic cassette that comprises plasmid elements. These compositions and methods find use in many applications, including therapeutic applications such as in gene therapy; synthesis applications such as in the synthesis of peptides, proteins, and RNAs, e.g. for research or therapeutic purposes; and research applications, such as in the production of transgenic cells and animals. In addition, reagents, devices and kits thereof that find use in making the subject compositions and practicing the subject methods are provided.
Abstract:
Methods of treating hemophilia A in a subject with an F8 gene mutation, wherein the F8 gene is repaired and the resultant repaired gene, upon expression, confers improved coagulation functionality to the encoded FVIII protein of the subject compared to the non-repaired F8 gene. The invention also includes methods of inducing immune tolerance to a FVIII replacement product ((r)FVIII) in a subject having a FVIII deficiency, wherein the F8 gene mutation is repaired and the repaired gene, upon expression, provides for the induction of immune tolerance to an administered replacement FVIII protein product. The invention also includes isolated nucleic acids, vectors, recombinant viruses, cells, and pharmaceutical compositions to repair the F8 gene.
Abstract:
The invention provides an expression and secretion system, and methods of using the same, for the expression and secretion of one fusion protein in prokaryotic cells and a second fusion protein in eukaryotic cells. Also provided herein are nucleic acid molecules, vectors and host cells comprising such vectors and nucleic acid molecules.
Abstract:
The present invention relates to a bicistronic expression vector for expressing an antibody, comprising a first expression cassette comprising 'promoter-intron-antibody light chain gene -polyA tail' and a second expression cassette comprising 'promoter-intron-antibody heavy chain gene-internal ribosome entry site (IRES)-amplification gene-polyA tail', an animal cell transfected with the expression vector, and a method for producing the antibody comprising culturing the animal cell. Based on the bicistronic expression vector for producing antibody comprising an intron of the present invention, an expression vector capable of expressing a desired antibody at high efficiency can be prepared. Also, through culturing the animal cells transfected with the expression vector, the desired antibody can be expressed stably and at high efficiency.
Abstract:
A method and vectors for controlling blood glucose levels in a mammal are disclosed. In one embodiment, the method comprises the steps of: treating the hepatocyte cells of a patient with a first, second or third vector, wherein the first vector comprises a promoter enhancer, glucose inducible regulatory elements, a liver-specific promoter, a gene encoding human insulin with modified peptidase and an albumin 3'UTR and lacks an HGH intron, wherein the second vector comprises an HGH intron, glucose inducible regulatory elements, a liver-specific promoter, a gene encoding human insulin with modified peptidase site and an albumin 3'UTR and lacks a promoter enhancer, wherein the third vector comprises an HGH intron, glucose inducible regulatory elements, a liver-specific promoter, a gene encoding human insulin with modified peptidase site, an albumin 3'UTR and a promoter enhancer and observing the patient's insulin levels, wherein the patient's insulin levels are controlled.