The current disclosure relates to a composition for promoting bone regeneration, preventing or treating bone diseases using a composition containing a hydrogel and a stem cell spheroid and a use thereof, and a method for preparing the same, wherein the composition for bone regeneration has the effect of promoting bone regeneration of injured bone tissue and alleviating pain while promoting the differentiation of the injected mesenchymal stem cells into osteoblasts and osteocytes at the same time, and thus, can be used for the prevention or treatment of bone diseases.

Aspects of the invention described herein include a hydrogel prodrug and methods of making a hydrogel prodrug for drug delivery. Also contemplated are methods of treating, inhibiting, ameliorating or inhibiting a disease or disorder. Without being limiting, the methods for treatment can be directed to a cancer, HIV, a virus, pain, a bacterial infection, a neurological disorder, hemorrhaging, multiple sclerosis, diabetes, high blood pressure, Alzheimer's, or inhibiting a fungal growth in a subject in need.

Described herein are drug delivery systems for delivering biologically active agents comprising primary or secondary amines, or a ring nitrogen atom of an azaheteroaryl ring, pharmaceutically acceptable salts thereof, drug delivery reagents related thereto, pharmaceutical compositions comprising the drug delivery systems, and the use of the drug delivery systems as sustained release therapeutics.

Injectable hydrogels in the form of crosslinked nano beads or particle in the size range 5 nm to 10 μm, comprising PAMAM dendrimer with asymmetrical peripheral end groups such that one of the terminal groups is involved in formation of hydrogel and the other in involved in the conjugation of drugs or imaging agents are formed by reaction of the PAMAM dendrimer with asymmetrical end groups with linear, branched, hyperbranched or star shaped polymers with functionalized terminal groups. The PAMAM dendrimer with asymmetrical terminal groups consists of a Generation 2 and above PAMAM dendrimer with symmetrical end groups modified using the amino acids or their modified forms. The gel is formed as small crosslinked particles in the size range 25 nm to 10 μm and is suitable for injectable delivery of hydrogel or ocular delivery for the purpose of therapeutic treatment and imaging.

The present disclosure provides a pharmaceutical association for use in the treatment, prevention and/or diagnostic of a neoplastic disease, said association comprising at least one growth factor receptor-binding compound, which activates at least one growth factor receptor of a neoplastic cell, and at least one bioactive carrier forming at least one covalent or non-covalent interaction with said at least one growth factor receptor-binding compound, and wherein said association reduces or suppresses, in the neoplastic cell, the gene expression of at least one cyclin D and/or reduces or suppresses the formation of at least one complex formed between said at least one cyclin D and at least one of cyclin dependent-kinase 4 or 6.

The present invention relates to a pharmaceutical composition comprising a population of stromal cells derived from neonatal felines and a pharmaceutically acceptable vehicle, in particular a solution comprising a cryoprotectant. The invention also relates to a population of neonatal stromal cells or a pharmaceutical composition comprising such a population for use in cell therapy, in particular allogeneic cell therapy, and more particularly for treating feline stomatitis. The invention also relates to a ready-to-use injectable solution comprising stromal cells derived from neonatal felines.

Provided are β-eliminative linkers suitable for the conjugation of small molecule, peptide, and protein and compounds comprising the linkers.

Trans-cyclooctene conjugates of therapeutic agents may be used for bioorthogonal delivery to a targeted location in a subject. The compositions and methods have applications in the treatment of various diseases or conditions including cancer, tumor growths, and bacterial infections.

Ultra-low crosslinked microgels made of an ultra-low crosslinked polymer are provided. The microgels, also referred to as Platelet-like Particles (PLPs), preferably have <0.5% crosslinking densities. One or more of the polymers are conjugated with a fibrin-binding element or moiety, preferably H6, in an amount effective to confer to the microgel selective binding to fibrin under physiological conditions. The PLPs can recapitulate multiple key functions of platelets including binding, stabilizing and enhancing fibrin clot formation, responsiveness to injury cues, and induction of clot contraction. In a preferred embodiment, the microgel or PLP has little or no binding to soluble fibrinogen under physiological conditions compared to its binding to fibrin. The microgels or PLPs are prepared using crosslinker-free synthesis conditions, and can promote or induce clotting and clot contraction.

Compositions and methods for treating aggregation-associated diseases are disclosed. In particular, compositions comprising the nascent polypeptide-associated complex (NAC) and the apical domain of CCT1 as well as peptide fragments thereof and fusion proteins containing NAC and CCT1 peptides can be used to suppress pathological protein aggregation and are useful for treatment of diseases associated with polyQ aggregation, amyloid beta aggregation, and alpha-synuclein aggregation.