Provided are a method for producing a soluble recombinant human-basic fibroblast growth factor (rh-bFGF), a recombinant human-basic fibroblast growth factor (rh-bFGF) obtained by the method, and a mutated nucleic acid molecule encoding the recombinant human-basic fibroblast growth factor (rh-bFGF).

The present disclosure relates to a highly stable basic fibroblast growth factor mutant, and a use thereof. More specifically, the present disclosure provides: a highly stable basic fibroblast growth factor (bFGF) mutant, in which two or more amino acids in an amino acid sequence of SEQ ID NO: 1 are substituted with serine and one or more amino acids are substituted with cysteine; a DNA base sequence encoding the bFGF mutant; an expression vector including the DNA base sequence; a transformant transformed by the expression vector; a method of producing the bFGF mutant; and a composition including the bFGF mutant as an active ingredient. According to the present disclosure, the bFGF mutant of the present disclosure has excellent stability in an aqueous solution state and excellent thermal stability, and thus it is possible to produce functional cosmetics and skin inflammation medicines which do not lose activity, unlike conventional wild-type bFGF products, even during distribution and storage.

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

A thermally stable polypeptide having FGF7 activity is provided. The polypeptide is a thermally stable polypeptide having FGF7 activity, wherein, in SEQ ID NO: 1, a 120th alanine (A) is substituted with cysteine (C), one including at least one substitution selected from substitution of a 126th lysine (K) with aspartic acid (D) and a 178th lysine (K) with glutamic acid (E) or aspartic acid (D) forms a salt bridge with a 175th arginine (R), and a 133rd cysteine (C) and a 137th cysteine (C) are disulfide bonded.

The invention provides an isolated thermostable polypeptide possessing FGF2 activity and having at least 85% sequence identity to SEQ ID NO: 2 (FGF2 wt) or a functional fragment thereof, and comprising at least one amino acid substitution R31L and the use thereof in the cell biology research, regenerative medicine and related medical applications or cosmetics. Further it discloses a culture medium comprising subjected FGF2 suitable for culturing a human pluripotent stem cells involving both human embryonic stem cells and induced pluripotent stem cells.

The present invention relates to the preparation of human basic fibroblast growth factor by using Bacillus subtilis and endonuclease. Specifically, the present invention provides a nucleic acid construct, which comprises an insert, and the insert comprises, from the 5′ end to the 3′ end, a polynucleotide sequence that encodes a short peptide affinity tag, a trans-splicing intein derived from Anabaena and an exogenous polypeptide; and wherein the short peptide affinity tag serves as an N-terminal extein of the trans-splicing intein, and the exogenous polypeptide serves as a C-terminal extein of the trans-splicing intein. The present invention further provides an expression vector and a host cell that comprise the construct, and a method for producing and purifying foreign proteins. The expression system and method of the present invention can significantly improve the expression efficiency of biologically active exogenous proteins, reduce the generation of inclusion bodies, simplify purification steps, greatly reduce purification costs, and are especially suitable for large-scale cultivation.

Provided is a method of preparing a circular permutation (CP)-based functional recombinant human-derived fibroblast growth factor 7 and a use thereof. The fibroblast growth factor 7 to which a circular permutation is applied (CP-hFGF7.sup.115-114) is independently expressed in a host cell, such that soluble overexpression of the fibroblast growth factor 7 may be induced without causing problems according to the related art, such as lower expression level and stability compared to those of a wild-type hFGF7 protein and amino acid changes in a process of removing a fusion tag.

Engineered FGF1 and FGF2 polypeptides, polynucleotides encoding these polypeptides and DNA constructs, vectors and compositions including these engineered polypeptides are provided herein. The engineered FGF1 and FGF2 polypeptides are more stable than their wild-type counterparts and may be more effective at treating a variety of conditions that FGF1 and FGF2 are useful for treating such as wound healing.

The present disclosure provides certain silk-fibroin compositions with particular characteristics and/or properties. In some embodiments, the disclosure provides low molecular weight compositions. In some embodiments, the disclosure provides silk fibroin compositions that comprise an active (e.g., a biological) agent or component. In some embodiments, the disclosure provides low molecular weight silk fibroin compositions that comprise an active (e.g., a biological) agent or component. In some embodiments, an active agent is stabilized in a silk composition, e.g., for a period of time and/or against certain conditions or events. In some embodiments, a component present in a silk fibroin composition may be subject to analysis and/or characterization. In some embodiments, a component present in a silk fibroin composition may be recovered from the composition.

The invention relates to molecular biology, biotechnology, medicine, veterinary science. A group of inventions is proposed: a fusion protein comprising a ligand to MATN1 protein, and a growth factor of EGF, TGF, FGF, IGF, connected via a flexible link; such fusion protein further comprising the Fc-fragment of an antibody or a polypeptide binding with FcRn and/or transferrin or a fragment thereof, connected via a flexible link; encoding polynucleotide, a genetic construct for the synthesis of the fusion protein in producer cells, or cells of a target organism, the fusion protein producer, a producer of the genetic construct, a preparation for the regeneration of cartilage containing at least 1 fusion protein or genetic construct, for parenteral or, in the case of the preparation based on at least 1 fusion protein containing the transport domain, —oral administration, in the latter case the preparation is enclosed in an enteric coating.