Myelos Corporation

D Elliott Parks

David Erick Wright

The invention provides methods of treatment using retro-inverso peptides derived from leukemia inhibitory factor (LIF) having between 18 and about 40 amino acids and including the sequence that is retro-inverso with respect to SEQ ID NO: 1. The peptides of the invention have the same activity as native LIF and also have neurotrophic activity. The peptides of the invention are also less susceptible to proteolytic degradation in vivo because of their D-amino acid linkage.

Method of using retro inverso peptides derived from leukemia inhibitory factor

This invention provides methods of treatment using retro-inverso peptides derived from interleukin-6 (IL-6) having between 15 and about 40 amino acids, and including the sequence that is retro-inverso with respect to SEQ ID NO: 1, i.e. wherein said peptide comprises the sequence D-Glu-D-Ala-D-Met-D-Lys-D-Pro-D-Leu-D-Asn-D-Leu-D-Asn-D-Asn-D-Glu-D-Ala-D-Leu-D-Ala-D-Glu. The peptides of the invention have the same activity as native IL-6 and also have neurotrophic activity. The peptides of the invention are also less susceptible to proteolytic degradation in vivo because of their D-amino acid linkage.

Methods of using retro-inverso peptides derived from interleukin-6

Retro-inverso peptides derived from interleukin-6 (IL-6) having between 17 and about 40 amino acids and including the sequence shown in SEQ ID NO: 1. These peptides have the same activity as native IL-6 and also have neurotrophic activity. Because of the D-amino acid linkage in the peptides, they are less susceptible to proteolytic degradation in vivo.

Retro-inverso peptides derived from interleukin-6

Retro-inverso peptides derived from interleukin-3 (IL-3) having between 12 and about 40 amino acids and including the sequence shown in SEQ ID NO: 1. These peptides have the same activity as native IL-3 and also have neurotrophic activity. Because of the D-amino acid linkage in the peptides, they are less susceptible to proteolytic degradation in vivo.

Retro-inverso peptides derived from interleukin-3

Retro-inverso peptides derived from leukemia inhibitory factor (LIF) having between 18 and about 40 amino acids and including the sequence shown in SEQ ID NO: 1. These peptides have the same activity as native LIF and also have neurotrophic activity. Because of the D-amino acid linkage in the peptides, they are less susceptible to proteolytic degradation in vivo.

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Del Mar, CA, United States of America

D Elliott Parks