Provided herein are dendrimer-targeting agent conjugates comprising a dendrimer, the dendrimer comprising a core unit and lysine or lysine analogue building units, a HER2 targeting agent which is a peptidic moiety having a molecular weight of up to about 80 kDa and comprising an antigen-binding site, which is covalently linked by a spacer group, and a therapeutic agent which is covalently linked to a surface building unit of the dendrimer. Also provided herein are compositions comprising the conjugates, and therapeutic methods using the conjugates, particularly for treating cancer.

The present invention relates to a heterotandem bicyclic peptide complex which comprises a first peptide ligand, which binds to Nectin-4, conjugated via a linker to two second peptide ligands, which bind to CD137. The invention also relates to the use of said heterotandem bicyclic peptide complex in preventing, suppressing or treating cancer.

The present invention relates to a heterotandem bicyclic peptide complex which comprises a first peptide ligand, which binds to EphA2, conjugated via a linker to two second peptide ligands, which bind to CD137. The invention also relates to the use of said heterotandem bicyclic peptide complex in preventing, suppressing or treating cancer.

The present disclosure relates to pharmaceutical compositions comprising a peptide or multivalent polypeptide, and an anti-cancer agent. In some embodiments, the anti-cancer agent is conjugated to the peptide or multivalent polypeptide. The present disclosure also relates to a method of treating cancer or reducing cancer cell proliferation using the peptide or multivalent polypeptide. In some aspects, the peptide or multivalent polypeptide enhances the efficacy of the anti-cancer agent, the targeting of the anti-cancer agent to the cancer cells, or both.

Described herein are silicon based conjugates capable of delivering one or more payload moieties to a target cell or tissue. Contemplated conjugates may include a silicon-heteroatom core, one or more optional catalytic moieties, a targeting moiety that permits accumulation of the conjugate within a target cell or tissue, one or more payload moieties (e.g., a therapeutic agent or imaging agent), and two or more non-interfering moieties covalently bound to the silicon-heteroatom core.

The present invention relates to a heterotandem bicyclic peptide complex which comprises a first peptide ligand, which binds to EphA2, conjugated via a linker to two second peptide ligands, which bind to CD137. The invention also relates to the use of said heterotandem bicyclic peptide complex in preventing, suppressing or treating cancer.

The present invention relates to a heterotandem bicyclic peptide complex which comprises a first peptide ligand, which binds to Nectin-4, conjugated via a linker to two second peptide ligands, which bind to CD137. The invention also relates to the use of said heterotandem bicyclic peptide complex in preventing, suppressing or treating cancer.

A star polymer of formula O[D1]-([X]-A(D2)-[Z]-[D3])n where O is a core; A is a polymer arm that comprises reactive monomers, hydrophilic monomers and/or charged monomers and is attached to the core; X is a linker molecule between the core and the polymer arm; Z is a linker molecule between the end of the polymer arm and D3; D1 is a drug molecule linked to the core; D2 is a drug molecule linked to reactive monomers distributed along the polymer arm; D3 is a drug molecule linked to the ends of the polymer arms; n is an integer number; [ ] denotes that the group is optional; and D2 is linked to the reactive monomers distributed along the polymer arm at a density of between 1 mol % and 80 mol %.

Disclosed are peptide conjugates comprising an active agent, a spacer moiety, and a dimeric collagen hybridizing peptide comprising a first and second collagen hybridizing peptide, a linker; and a branch point, wherein the first and second collagen hybridizing peptides comprise the sequence of at least (GXY)n, wherein G is glycine, wherein X and Y are any amino acid, and wherein n is any number between 3 and 12. Also disclosed are methods of detecting denatured collagen in a sample comprising contacting a composition comprising any one of the disclosed peptide conjugates to a sample, wherein the active agent comprises a therapeutic agent, and detecting the presence or absence of binding of the peptide conjugate to denatured collagen, the presence of binding indicating the presence of denatured collagen in the sample. Also disclosed are methods of treating a disease or injury involving collagen damage comprising administering to a subject having a disease or injury involving collagen damage any one of the disclosed peptide conjugates.

Provided herein are compositions comprising peptide amphiphiles, glycosylated peptide amphiphiles (GPAs), supramolecular nanostructures assembled therefrom, and methods of use thereof. The peptide amphiphiles described herein may extend the half-life of bone morphogenic proteins, promote cell differentiation, suppress proliferation, and increase chemosensitivity of cells. Accordingly, the compositions described herein may be used for cancer treatment methods. In particular, provided herein are bone morphogenic proteins bound to peptide amphiphiles and glycosylated peptide amphiphiles or composites thereof, and methods of use of the same for the treatment of cancer. Also, provided herein are bone morphogenic proteins bound to peptide amphiphiles and glycosylated peptide amphiphiles or composites thereof, and methods of use of the same in a combinatorial approach together with chemotherapeutic medications for the treatment of cancer.