摘要:
Disclosed herein are protein translation switches and conditional gene expression systems that are compatible with retroviral and lentiviral gene delivery. The linking of a protein translation switch to a 3' gene of interest suppresses translation of the gene of interest, and the alteration of the protein translation switch by DNA recombinase-mediated DNA recombination relieves the suppressed translation of the 3' gene of interest. Also disclosed herein are methods of mimicking clinical pharmacology in a pre-clinical setting.
摘要:
In order to improve mRNA stability and translatabihty in cells, the present invention provides pVec that is obtained through in turn constructing pcDNA3.1 -5'UTR-MCS-3'UTR- pA, pcDNA3.1 -5'UTR-MCS (no Spel, BamHI/EcoRI)-3'UTR-pA, pVecO-5'UTR-MCS (no Spel, BamHI/EcoRI)-3'UTR-pA, achieving pVecl -5'UTR-MCS (no Spel, BamHI/EcoRI)- 3'UTR-pA, referred to as pVec. It contains CMV enhancer/promoter, T7 promoter, 5'UTR, MCS, 3'UTR, poly A (120A)-TTATT, BGH poly (A) signal, kanamycin resistance gene and pUC origin, etc., and is mainly characterized in being able to enhance the stability and translatabihty of the in vitro transcribed mRNA in cells. pVec can be both a DNA vaccine or drug vector and an mRNA vaccine or drug vector. The present invention also provides the construction of pVec-GM-CSF, pVec-hlL-12 and pVAX1 -hlL-12, which are as application examples of evaluating the benefits of pVec.
摘要:
Выявлены точечные изменения нуклеотидной последовательности 3'UTR гена vegf, которые существенно увеличивают время жизни продукта его транскрипции - мРНК в клетках млекопитающих. Экспериментальным путем выбрана генная конструкция с оптимальным перечнем выявленных мутаций, характеризующаяся наибольшим временем жизни мРНК. Подтвержден биологический эффект разработанной генной конструкции и фармацевтической композиции на ее основе in vitro и in vivo.
摘要:
The present invention provides a bi-cistronic bigenic mammalian expression vector. This mammalian expression vector is comprised of three transcription cassettes, transcription cassette one for expression of first polypeptide of interest, transcription cassette two for expression of DHFR gene and transcription cassette three for expression of second polypeptide of interest. The present vector also have atleast two different antibiotic selection marker genes and atleast one matrix attachment region (MAR). The expression vector facilitates high level expression of polypeptides of interest and easy and cost effective selection of high producing host cell clones.
摘要:
The invention relates to an artificial nucleic acid molecule comprising at least one open reading frame and at least one 3'-untranslated region element (3'-UTR element) comprising a nucleic acid sequence which is derived from the 3'-UTR of a FIG4 gene or from a variant of the 3'-UTR of a FIG4 gene. The invention further relates to the use of such an artificial nucleic acid molecule in gene therapy and/or genetic vaccination. Furthermore, the invention relates to the use of a 3'-UTR element comprising a nucleic acid sequence which is derived from the 3'-UTR of a FIG4 gene or from a variant of the 3'-UTR of a FIG4 gene for the stabilization and/or prolongation of protein expression from a nucleic acid sequence comprising such 3'-UTR element.
摘要:
Aspects of the invention relate to methods for increasing gene expression in a targeted manner. In some embodiments, methods and compositions are provided that are useful for posttranscriptionally altering protein and/or RNA levels in a targeted manner. Aspects of the invention disclosed herein provide methods and compositions that are useful for protecting RNAs from degradation (e.g., exonuclease mediated degradation).
摘要:
The present invention relates to a nucleic acid sequence, comprising or coding for a coding region, encoding at least one peptide or protein comprising a pathogenic antigen or a fragment, variant or derivative thereof, at least one histone stem-loop and a poly(A) sequence or a polyadenylation signal. Furthermore the present invention provides the use of the nucleic acid for increasing the expression of said encoded peptide or protein. It also discloses its use for the preparation of a pharmaceutical composition, especially a vaccine, e.g. for use in the treatment of infectious diseases. The present invention further describes a method for increasing the expression of a peptide or protein comprising a pathogenic antigen or a fragment, variant or derivative thereof, using the nucleic acid comprising or coding for a histone stem-loop and a poly(A) sequence or a polyadenylation signal.
摘要:
The present invention relates to a nucleic acid sequence, comprising or coding for a coding region, encoding at least one peptide or protein comprising a therapeutic protein or a fragment, variant or derivative thereof, at least one histone stem-loop and a poly(A) sequence or a polyadenylation signal. Furthermore the present invention provides the use of the nucleic acid for increasing the expression of said encoded peptide or protein, particularly for the use in gene therapy. It also discloses its use for the preparation of a pharmaceutical composition, e.g. for use in gene therapy, particularly in the treatment of diseases which are in need of a treatment with a therapeutic peptide or protein, preferably as defined herein. The present invention further describes a method for increasing the expression of a peptide or protein comprising a therapeutic protein or a fragment, variant or derivative thereof, using the nucleic acid comprising or coding for a histone stem-loop and a poly(A) sequence or a polyadenylation signal.