The present invention relates to the development of stable mutants of FGF-1 and FGF-2. In particular, it relates to novel engineered FGF-1 and FGF-2 polypeptides as well as polynucleotides, DNA constructs, and vectors encoding such polypeptides. In another aspect, pharmaceutical compositions and hydrogels including the disclosed polypeptides, polynucleotides, DNA constructs, and vectors are provided. In a still further aspect, methods of treating conditions using the compositions disclosed herein are provided.

The present disclosure provides FGF1 mutant proteins, such as those having an N-terminal deletion, point mutation(s), or combinations thereof, which can reduce blood glucose in a mammal. Such mutant FGF1 proteins can be part of a chimeric protein that includes a -Klotho-binding protein, an FGFR1c-binding protein, a -Klotho-binding protein and a FGFR1c-binding protein, a C-terminal region from FGF19 or FGF21. In some examples, mutant FGF1 proteins have reduced mitogenic activity. Also provided are nucleic acid molecules that encode such proteins, and vectors and cells that include such nucleic acids. Methods of using the disclosed molecules to reduce blood glucose levels are also provided.

The present disclosure provides FGF1 mutant proteins, which include an N-terminal deletion, point mutation(s), or combinations thereof. In some examples, the mutant FGF1 proteins have reduced mitogenic activity. Also provided are nucleic acid molecules that encode such proteins, and vectors and cells that include such nucleic acids. The disclosed FGF1 mutants can reduce blood glucose in a mammal, and in some examples are used to treat a metabolic disorder.

The present invention provides dominant negative mutants of FGF2 for suppressing FGF-mediated cellular signaling. Related compositions, methods, and kits are disclosed.

The invention refers to genetic engineering and can be used in biotechnology, medicine, and agriculture for the manufacture of gene therapy products. A gene therapy DNA vector based on the VTvaf1V gene therapy DNA vector is proposed that carries a target gene selected from the group of genes ANG, ANGPT1, VEGFA, FGF1, HIF1a, HGF, SDF1, KFK4, PDGFC, PROK1, PROK2, to increase the expression level of this target gene in humans and animals. Gene therapy DNA vector VTvaf17-ANG or VTvaf 17-AN GPT 1 or VTvaf17-VEGFA or VTvaf17-FGF1 or VTvaf17-HIF1a or VTvaf17-HGF or VTvaf17-SDF1 or VTvaf 17-KFK4 or VTvaf 17-PDGFC, or VTvaf 17-PDKFC or VTvaf17 has the nucleotide sequence of SEQ ID No. 1 or SEQ ID No. 2 or SEQ ID No. 3 or SEQ ID No. 4 or SEQ ID No. 5 or SEQ ID No. 6 or SEQ ID No. 7 or SEQ ID No. 8 or SEQ ID No. 9 or SEQ ID No. 10 or SEQ ID No. 11, respectively. Also provided are a method of producing said vector, the use of a vector, a strain of Escherichia coli carrying said vector, as well as a method of industrial production of said vector.

Mutant fibroblast growth factor (FGF) proteins having a polypeptide sequence with a high sequence identity to proteins encoded by members of the Fgf-1 subfamily of genes from a mammalian species, such as human, and with a specific amino acid substitution of an alanine at a position corresponding to amino acid position 66 of human FGF-1 with a cysteine and/or a specific amino acid substitution of a phenylalanine at a position corresponding to amino acid position 132 of human FGF-1 with a tryptophan (based on the 140 amino acid numbering scheme of human FGF-1) are provided. Other amino acid mutations or substitutions may be combined. Polynucleotide sequences encoding the mutant FGF proteins and host cells containing such polynucleotide sequences are provided. Methods of administering a mutant FGF protein to an individual to treat an ischemic condition or disease or a wound or tissue injury are also provided.

Methods of using FGF1 analogs, such as FGF1 mutant proteins having an N-terminal deletion, point mutation(s), or combinations thereof, to reduce blood glucose levels in subjects with steroid-induced diabetes, hypercortisolemia, or diabetes due to treatment with an antipsychotic agent, are provided. Such mutant FGF1 proteins can be part of a chimeric protein that includes a -Klotho-binding protein, an FGFR1-binding protein, a -Klotho-binding protein and a FGFR1-binding protein, a C-terminal region from FGF19 or FGF21.

Mutant fibroblast growth factor (FGF) proteins having a polypeptide sequence with a high sequence identity to proteins encoded by members of the Fgf-1 subfamily of genes from a mammalian species, such as human, and with a specific amino acid substitution of an alanine at a position corresponding to amino acid position 66 of human FGF-1 with a cysteine and/or a specific amino acid substitution of a phenylalanine at a position corresponding to amino acid position 132 of human FGF-1 with a tryptophan (based on the 140 amino acid numbering scheme of human FGF-1) are provided. Other amino acid mutations or substitutions may be combined. Polynucleotide sequences encoding the mutant FGF proteins and host cells containing such polynucleotide sequences are provided. Methods of administering a mutant FGF protein to an individual to treat an ischemic condition or disease or a wound or tissue injury are also provided.

The present disclosure provides FGF1 mutant proteins, such as those having an N-terminal deletion, point mutation(s), or combinations thereof, which can reduce blood glucose in a mammal. Such mutant FGF1 proteins can be part of a chimeric protein that includes a -Klotho-binding protein, an FGFR1c-binding protein, a -Klotho-binding protein and a FGFR1c-binding protein, a C-terminal region from FGF19 or FGF21. In some examples, mutant FGF1 proteins have reduced mitogenic activity. Also provided are nucleic acid molecules that encode such proteins, and vectors and cells that include such nucleic acids. Methods of using the disclosed molecules to reduce blood glucose levels are also provided.

The present invention relates to a chimeric protein that includes an N-terminus coupled to a C-terminus, where the N-terminus includes a portion of a paracrine fibroblast growth factor (FGF) and the C-terminus includes a C-terminal portion of an FGF21 molecule. The portion of the paracrine FGF is modified to decrease binding affinity for heparin and/or heparan sulfate compared to the portion without the modification. The present invention also relates to pharmaceutical compositions including chimeric proteins according to the present invention, methods for treating a subject suffering from diabetes, obesity, or metabolic syndrome, and methods of screening for compounds with enhanced binding affinity for the Klotho-FGF receptor complex involving the use of chimeric proteins of the present invention.