The present invention relates to methods and compositions for maggot debridement therapy. More specifically, the invention relates to recombinant nucleic acid constructs, transgenic maggots comprising the recombinant nucleic acids, methods for making the maggots, and methods for the use of the maggots, including debridement and promoting of wound healing.

Disclosed herein are compositions and methods for the treatment of otic disorders with immunomodulating agents and auris pressure modulators. In these methods, the auris compositions and formulations are administered locally to an individual afflicted with an otic disorder, through direct application of the immunomodulating and/or auris pressure modulating compositions and formulations onto the auris media and/or auris interna target areas, or via perfusion into the auris media and/or auris interna structures.

Acellular compositions for treating inflammation, comprising two or more of IL1-ra, sTNF-R1, sTNF-RII, IGF-I, EGF, HGF, PDGF-AB, PDGF-BB, VEGF, TGF-β1, and sIL-1RII. Components of the acellular compositions may be derived from biologic materials, such as blood clots and urine. Components may also be obtained from cell cultures.

The present disclosure provides a composition comprising a bioactive fraction derived from a platelet concentrate, methods of making the bioactive fraction, and culture medium supplemented with the bioactive fraction. Preferred bioactive fractions have relatively low fibrinogen concentrations while retaining native growth factors in beneficial amounts and ratios.

In vitro and in vivo application of sub-atmospheric, negative pressure on growth factor starting material, such as whole blood, extracts growth factors from the platelet granules of the growth factor starting material in a non-destructive medium without activating the clotting process. The extracted growth factors are released into a growth factor composition containing blood plasma, extracellular fluid or interstitial fluid depending upon the type and location of the growth factor starting material. The growth factors have a weight of about 70-76 kDaltons and are applied in either a filtered or unfiltered state topically to the area of a surface wound to effect healing. The extracted growth factors are also injected into soft tissue, such as a torn tendon, to promote tissue growth and healing. The growth factors are released in one method from a patient's own blood. In another method the growth factors are released from a whole blood source and freeze dried by lyophilization. Then at a later date, the freeze-dried product is reconstituted by normal saline for treatment of a patient's wound, for use in a surgical procedure, or for tissue regeneration.

The invention relates to a viral inactivated biological liquid or dry mixture and to its preparation. Principally, the invention relates, but is not limited, to a mixture derived from a platelet source.

Embodiments provide methods and apparatus for fabricating blood products, such as platelet-rich plasma, containing elevated concentrations of growth factors such as platelet derived growth factor. The platelet-rich plasma can be autologous, and the concentration of growth factors (e.g., platelet derived growth factor) is elevated relative to other samples isolated from the same subject. The platelet-rich plasma can be used to promote tissue regeneration, including wound healing, joint repair, hair growth, and the like. The compositions can be combined with stem cells and used to treat disorders otherwise treated with stem cells. The growth factors present in the samples can direct the differentiation of the stem cells.

This disclosure relates to mRNA therapy for (i) the promotion and/or improvement of wound healing, (ii) the prevention and/or reduction of scar formation at a wound, (iii) the reduction of the visibility of a scar, and/or (iv) the treatment of epidermolysis bullosa. mRNAs for use in the invention, when intradermally (e.g., using microneedles) or topically administered in vivo, encode a wound healing polypeptide (e.g., a growth factor, a cytokine, a chemokine, a protease inhibitor, or a collagen).

Methods of treating a subject in need thereof are provided which include: administering a recombinant platelet derived growth factor D (PDGF D) composition to a mesenchymal stem cell of the subject and/or a progenitor derived therefrom, in vivo, or ex vivo, producing a treated mesenchymal stem cell of the subject and/or a progenitor derived therefrom, thereby stimulating the mesenchymal stem cell (MSC) and/or a progenitor derived therefrom. Cells expressing a recombinant PDGF D composition of the present are administered to the subject for in vivo delivery of the recombinant PDGF D composition according to aspects of the present disclosure. Methods and compositions are provided including recombinant PDGF D hemidimer (HD) including a full-length PDGF D polypeptide and a C-terminal growth factor domain of PDGF D, which lacks a CUB domain, promoting regulation of bone marrow MSC differentiation into osteogenic lineage cells.

The present disclosure is directed to systems, methods, and compositions for functional interaction of fibroblasts with one or more types of immune cells such that the interaction results in modification to the fibroblasts, the one or more types of immune cells, or both. In some embodiments, one or more certain agents are also utilized during the interaction or in lieu of one of the types of cells. In specific embodiments, cells to be used in cellular transplantation therapy are modified to have reduced immunogenicity.