Embodiments of the synthesis, radiolabeling and biological applications of an activatable tracer that undergoes intramolecular cyclization and aggregation upon activation by cleavage of a blocking moiety are provided. The probes of the disclosure allow for target-controlled self-assembly of small molecules in living subjects for imaging and drug delivery. The aggregated nanoprobes of the disclosure may be detectable optically, by PET detection, magnetic resonance imaging, and the like depending on the detectable reporter attached to the nanoprobe.

The present invention is directed compositions for targeted delivery of RNA interference (RNAi) polynucleotides to cell in vivo. The pharmacokinetic modulator improve in vivo targeting compared to the targeting ligand alone. Targeting ligand-pharmacokinetic modulator targeting moiety targeted RNAi polynucleotides can be administered in vivo alone or together with co-targeted delivery polymers.

Disclosed is a peptide and a cosmetic composition using the same. The peptide inhibits the activity of an aryl hydrocarbon receptor (AhR), whereby the peptide may be used to alleviate skin troubles caused by fine dust.

Provided herein are stable peptide analogs of the native alpha-melanocyte stimulating hormone (α-MSH) having selectivity for the melanocortin 1 receptor (MC1R). Also provided herein are pharmaceutical preparations of the α-MSH peptide analogs, as well as methods of using these analogs in the treatment of medical and veterinary conditions involving MC1R.

The present invention relates to bioactive peptides and to the cosmeceutical compositions containing them, useful for the prevention and treatment of the signs of skin aging, such as wrinkles, fine lines and loss of firmness and elasticity of the skin, thanks to their efficacy in the protection of the dermal collagen.

There is provided a composition for improving memory, learning ability, and cognitive ability and a method of enhancing a brain or cognitive function by administering the composition to a subject in need thereof. It has been confirmed that a peptide having a C-terminal region ended to GAG had an effect of improving the memory. In order for the peptide to have the effect, it has been confirmed that the peptide should be a peptide of which the length consists of at least 4 amino acids. Further, it has been confirmed that a peptide of which the length of the peptide having the C-terminal region ended to GAG consists of 5 to 9 amino acids has the same effect. As a result, the peptide of the present invention can be used as the composition for improving memory, learning ability, and cognitive ability, and the method of enhancing a brain or cognitive function.

A compound of formula (I) R.sub.1-W.sub.m-X.sub.n-AA.sub.1-AA.sub.2-AA.sub.3-AA.sub.4-AA.sub.5-AA.sub.6-Y.sub.p-Z.sub.q-R.sub.2, a stereoisomer and/or cosmetically acceptable salt thereof, and a method of treatment using the compound are described. In the compound, AA.sub.1 is Asp, Gly, Asn, Gln, Ala or no amino acid; AA.sub.2 is Val, Ile, Leu or Ala; AA.sub.3 is Tyr, Phe, Trp, Lys, Arg or His; AA.sub.4 is Lys, Arg, His, Pro or Val; AA.sub.5 is Asn, Asp, Gln or no amino acid; AA.sub.6 is Thr, Ala, Ser or no amino acid. The compounds are useful for the treatment of the symptoms of skin aging and, in particular, for the treatment of skin wrinkles, the treatment of a sagging appearance of the skin, and/or the reduction of facial asymmetry.

Disclosed are inhibitors for the β-catenin/T-cell factor interaction. The inhibitors are selective for β-catenin/T-cell factor over β-catenin/phosphocadherin, and β-catenin/phosphoAPC interactions. Methods of using the disclosed compounds to treat cancer are also disclosed.

Disclosed are geminoid peptide-like compound according to Formula I:

R.sup.1—C(═O)—Z.sub.n—NR.sup.3-R.sup.2  (I)

in which R.sup.1 and R.sup.2 are each independently saturated, partly saturated or unsaturated, straight, branched or cyclic alkyl chains, wherein R.sup.1 has a number of C atoms of 11 or more, preferably 11 to 19, and R.sup.2 has a number of C atoms of 12 or more, preferably 12 to 20; R.sup.3 is hydrogen or C.sub.1-C.sub.6 alkyl; n is an integer from 1-15;
each Z independently is an amino acid residue, wherein Z.sub.n comprises an N-terminus attached to C(═O) and a C-terminus that is attached to NR.sup.3, for use as a medicament.

The disclosure pertains to methods of treating or preventing a disease or condition associated with and/or induced by soluble A-beta oligomer such as Alzheimer's disease by administering to a subject in need thereof conformation specific and/or selective antibodies or binding fragments thereof and related products.