Abstract: The present application relates to methods and compositions and methods for treating viral infections, especially those caused by SARS-CoV-2. In one aspect, a method of treatment comprises administering to a subject in need of such treatment an effective amount of a pharmaceutical composition comprising a multipartite SARS-CoV-2-inhibiting peptide comprising a secretion modulating region (VI-SMR) peptide from HIV-1 Nef in combination with a cell-penetrating peptide (CPP) domain, a Clusterin (Clu)-binding peptide (Clu-BP) domain, a mitochondrial targeting (Mito-T) peptide domain, an anti-fusogenic (AF) peptide domain, a viral attachment inhibitor (VAI) domain or combination thereof, optionally where the SARS-CoV-2-inhibiting peptide is pegylated and/or modified with one or more hydrophobic domains.

Abstract: A method for treating a cancer comprises administering to a subject in need of such treatment an effective amount of a pharmaceutical composition comprising an anti-cancer agent having at least one secretion modifying region (SMR) peptide from HIV-1 Nef fused to at least one cell-penetrating peptide (CPP) or at least one Clusterin (Clu)-binding peptide (Clu-BP).

Abstract: The present application relates to methods and compositions and methods for treating viral infections, especially those caused by SARS-CoV-2. In one aspect, a method of treatment comprises administering to a subject in need of such treatment an effective amount of a pharmaceutical composition comprising a multipartite SARS-CoV-2-inhibiting peptide comprising a secretion modulating region (VI-SMR) peptide from HIV-1 Nef in combination with a cell-penetrating peptide (CPP) domain, a Clusterin (Clu)-binding peptide (Clu-BP) domain, a mitochondrial targeting (Mito-T) peptide domain, an anti-fusogenic (AF) peptide domain, a viral attachment inhibitor (VAI) domain or combination thereof, optionally where the SARS-CoV-2-inhibiting peptide is pegylated and/or modified with one or more hydrophobic domains.

Abstract: The present application discloses a method for treating microbial infection using an antimicrobial composition comprises antimicrobial peptide which contains at least one VGFPV motif.

Abstract: The present application discloses a method for treating microbial infection using an antimicrobial composition comprises antimicrobial peptide which contains at least one VGFPV motif.

Abstract: The present application relates to methods and compositions and methods for treating viral infections, especially those caused by SARS-CoV-2. In one aspect, a method of treatment comprises administering to a subject in need of such treatment an effective amount of a pharmaceutical composition comprising a multipartite SARS-CoV-2-inhibiting peptide comprising a secretion modulating region (VI-SMR) peptide from HIV-1 Nef in combination with a cell-penetrating peptide (CPP) domain, a Clusterin (Clu)-binding peptide (Clu-BP) domain, a mitochondrial targeting (Mito-T) peptide domain, an anti-fusogenic (AF) peptide domain, a viral attachment inhibitor (VAI) domain or combination thereof, optionally where the SARS-CoV-2-inhibiting peptide is pegylated and/or modified with one or more hydrophobic domains.

Abstract: The present application relates to methods of producing exosomes. The application also provides a method for preparing a protein composition comprising culturing an exosome-producing cell expressing a Nef-fusion protein comprising a Nef-derived peptide fused to a protein of interest; isolating exosomes from the exosome-producing cell culture; and purifying the protein of interest from the isolated exosomes. The application further discloses compositions that comprise exosomes containing the Nef-fusion protein, as well as methods of using the Nef-fusion protein and exosomes containing the Nef-fusion protein.

Abstract: The present application relates to methods of producing exosomes. The application also provides a method for preparing a protein composition comprising culturing an exosome-producing cell expressing a Nef-fusion protein comprising a Nef-derived peptide fused to a protein of interest; isolating exosomes from the exosome-producing cell culture; and purifying the protein of interest from the isolated exosomes. The application further discloses compositions that comprise exosomes containing the Nef-fusion protein, as well as methods of using the Nef-fusion protein and exosomes containing the Nef-fusion protein.

Abstract: A method for treating a cancer comprises administering to a subject in need of such treatment an effective amount of a pharmaceutical composition comprising an anti-cancer agent having at least one secretion modifying region (SMR) peptide from HIV-1 Nef fused to at least one cell-penetrating peptide (CPP) or at least one Clusterin (Clu)-binding peptide (Clu-BP).

Abstract: The present application discloses a method for treating microbial infection using an antimicrobial composition comprises antimicrobial peptide which contains at least one VGFPV motif.

Abstract: A method for treating a cancer comprises administering to a subject in need of such treatment an effective amount of a pharmaceutical composition comprising an anti-cancer agent having at least one secretion modifying region (SMR) peptide from HIV-1 Nef fused to at least one cell-penetrating peptide (CPP) or at least one Clusterin (Clu)-binding peptide (Clu-BP).

Abstract: Compositions and methods for reducing the growth of and/or preventing the formation of a microbial biofilm are disclosed. The composition comprises an antimicrobial SMR peptide comprising an HIV-1 SMRwt peptide and a cell penetrating peptide (CPP) domain. In some embodiments, the composition further comprises one or more other antimicrobial peptides (AMPs), antibiotics, matrix-inhibiting compounds, matrix-disaggregating compounds, quorum sensing inhibitors, or a combination thereof. In other embodiments, the compositions are used for impregnating or coating an article and/or material surface with the composition to render it less prone to microbial infections.

Abstract: A multipartite peptide that inhibits release of exosomes in a cell, comprising an N-terminal end and a C-terminal end and comprising at least one secretion modifying region (SMR) peptide from HIV-1 Nef and at least one Clusterin (Clu)-binding peptide (Clu-BP). Pharmaceutical compositions comprising these peptides alone or in synergistic combinations with other active agents in methods for treating cancers and/or infectious diseases are further provided herein.

Abstract: The present application relates to methods of producing exosomes. The application also provides a method for preparing a protein composition comprising culturing an exosome-producing cell expressing a Nef-fusion protein comprising a Nef-derived peptide fused to a protein of interest; isolating exosomes from the exosome-producing cell culture; and purifying the protein of interest from the isolated exosomes. The application further discloses compositions that comprise exosomes containing the Nef-fusion protein, as well as methods of using the Nef-fusion protein and exosomes containing the Nef-fusion protein.

Abstract: The present application relates to methods of producing exosomes. The application also provides a method for preparing a protein composition comprising culturing an exosome-producing cell expressing a Nef-fusion protein comprising a Nef-derived peptide fused to a protein of interest; isolating exosomes from the exosome-producing cell culture; and purifying the protein of interest from the isolated exosomes. The application further discloses compositions that comprise exosomes containing the Nef-fusion protein, as well as methods of using the Nef-fusion protein and exosomes containing the Nef-fusion protein.

Abstract: The present application relates to methods of producing exosomes. The application also provides a method for preparing a protein composition comprising culturing an exosome-producing cell expressing a Nef-fusion protein comprising a Nef-derived peptide fused to a protein of interest; isolating exosomes from the exosome-producing cell culture; and purifying the protein of interest from the isolated exosomes. The application further discloses compositions that comprise exosomes containing the Nef-fusion protein, as well as methods of using the Nef-fusion protein and exosomes containing the Nef-fusion protein.

Abstract: The present application discloses a method for treating microbial infection using an antimicrobial composition comprises antimicrobial peptide which contains at least one VGFPV motif.

Abstract: Compositions and methods for reducing the growth of and/or preventing the formation of a microbial biofilm are disclosed. The composition comprises an antimicrobial SMR peptide comprising an HIV-1 SMRwt peptide and a cell penetrating peptide (CPP) domain. In some embodiments, the composition further comprises one or more other antimicrobial peptides (AMPs), antibiotics, matrix-inhibiting compounds, matrix-disaggregating compounds, quorum sensing inhibitors, or a combination thereof. In other embodiments, the compositions are used for impregnating or coating an article and/or material surface with the composition to render it less prone to microbial infections.

Abstract: A method for treating a cancer comprises administering to a subject in need of such treatment an effective amount of a pharmaceutical composition comprising an anti-cancer agent having at least one secretion modifying region (SMR) peptide from HIV-1 Nef fused to at least one cell-penetrating peptide (CPP) or at least one Clusterin (Clu)-binding peptide (Clu-BP).

Abstract: The present application discloses a method for treating microbial infection using an antimicrobial composition comprises antimicrobial peptide which contains at least one VGFPV motif.