A tetrapeptide, capable of inducing dermal extracellular matrix protein upregulation, selected from the group consisting of tetrapeptides having the amino acid sequence U-QTAV-Z wherein Q denotes Glutamine, T denotes Threonine, A denotes Alanine and V denotes Valine, at the N-terminal end, U is independently selected from the group consisting of octanoyl (C8), decanoyl (C10), lauroyl (C12), myristoyl (C14), palmitoyl (C16), stearoyl (C18), biotinoyl, elaidoyl, oleoyle, lipoyle, at the C-terminal end, Z is selected from the group consisting of OH, O R1, NHR1 or NR1R2, R1 and R2 are independently selected from the group consisting of alkyl, aryl, aralkyl, alkylaryl, alkoxy, saccharide and aryloxy group, which may be linear, branched, cyclical, polycyclic, unsaturated, hydroxylates, carbonylated, phosphorylated and/or sulphurous, said groups comprising from 1 to 24 carbon atoms and being capable of including one or more heteroatoms O, S and/or N.

According to the present invention, there is provided a tetrapeptide, capable of inducing dermal extracellular matrix protein upregulation, having the amino acid sequence U-(SEQ ID No: 1)-Z, U-(SEQ ID No: 2)-Z, U-(SEQ ID No: 3)-Z, U-(SEQ ID No: 4)-Z, U-(SEQ ID No: 5)-Z, U-(SEQ ID No: 6)-Z, U-(SEQ ID No: 7)-Z, U-(SEQ ID No: 8)-Z, U-(SEQ ID No: 9)-Z, U-(SEQ ID No: 11)-Z, U-(SEQ ID No: 12)-Z, U-(SEQ ID No: 13)-Z, U-(SEQ ID No: 14)-Z, U-(SEQ ID No: 15)-Z, U-(SEQ ID No: 16)-Z, U-(SEQ ID No: 17)-Z, U-(SEQ ID No: 18)-Z, U-(SEQ ID No: 19)-Z, U-(SEQ ID No: 20)-Z, U-(SEQ ID No: 21)-Z, U-(SEQ ID No: 22)-Z, U-(SEQ ID No: 23)-Z, U-(SEQ ID No: 24)-Z, U-(SEQ ID No: 25)-Z, U-(SEQ ID No: 26)-Z, U-(SEQ ID No: 27)-Z, U-(SEQ ID No: 28)-Z, and U-(SEQ ID No: 29)-Z.

Disclosed herein are peptoids and related compounds, including peptoid affinity ligands for binding and/or purifying immunoglobulins, immunoglobulin fragments or immunoglobulin fusion proteins thereof. Methods of making peptoid affinity ligands and using the same to bind, purify and/or isolate immunoglobulins and related compounds are also disclosed. Such peptoid affinity ligands comprise a peptoid compound consisting of sequentially coupled peptoid residues forming a peptoid backbone, with one or more functional groups appended to a nitrogen of the peptoid residues of the peptoid backbone configured to provide the desired binding affinity.

The disclosure relates to a method for protecting a kidney from renal injury. For example, acute renal injury may be associated with decreased or blocked blood flow in the subject's kidney or exposure to a nephrotoxic agent, such as a radiocontrast dye. The methods include administering to the subject an effective amount of an aromatic-cationic peptide to a subject in need thereof.

The invention provides a method for reducing oxidative damage in a mammal, a removed organ, or a cell in need thereof The method comprises administering an effective amount of an aromatic cationic peptide. The aromatic cationic peptide has (a) at least one net positive charge; (b) a minimum of three amino acids; (c) a maximum of about twenty amino acids, (d) a relationship between the minimum number of net positive charges (p.sub.m) and the total number of amino acid residues (r) wherein 3 p.sub.m is the largest number that is less than or equal to r+1; (e) a relationship between the minimum number of aromatic groups (a) and the total number of net positive charges (p.sub.t) wherein 3a or 2a is the largest number that is less than or equal to p.sub.t+1, except that when a is 1, p.sub.t may also be 1; and (f) at least one tyrosine or tryptophan amino acid.

The disclosure provides methods of preventing, ameliorating or treating disruption of mitochondrial function and symptoms thereof. The methods provide administering aromatic-cationic peptides in effective amounts to prevent, treat or ameliorate the disruption of mitochondrial oxidative phosphorylation in a cell such as that found in a subject suffering from, or predisposed to a mitochondrial disease or disorder. In some embodiments, the methods comprise administering to a subject suffering from, or at risk for a mitochondrial disease or disorder, an effective amount of an aromatic-cationic peptide to subjects in need thereof.

The present disclosure provides certain chiral peptide agents, and uses relating thereto.

The instant disclosure is directed to solution phase fragment coupling methods for preparing etelcalcetide and its pharmaceutically acceptable salts.

The present invention provides compounds and pharmaceutical compositions of a peptidomimetic ligand, e.g. LLP2A, conjugated with a bisphosphonate drug, e.g. Alendronate. The compounds and pharmaceutical compositions of the present invention are useful in the treatment of osteoporosis and for the promotion of bone growth due to their specificity for the .sub.4.sub.1 integrin on mesenchymal stem cells and for the surface of bone.

Disclosed are various crystalline salt forms of Boc-D-Arg-DMT-Lys(Boc)-Phe-NH.sub.2.