CRF analog conjugates

Details CRF analog conjugates CRF analog conjugates

1990-04-11

1992-07-21

Lee, Lester L.

Drug, bio-affecting and body treating compositions

Lymphokine

530306, 530324, 530350, 530402, 530807, 514805, 930 70, 930280, 930DIG570, C12P 2100, C07K 738

Patent

active

051321114

ABSTRACT:
Agonists and antagonists of rCRF are disclosed that exhibit good binding affinity to CRF receptors. One exemplary agonist is: H-Ser-Gln-Glu-Pro-Pro-Ile-Ser- Leu-Asp-Leu-Thr-Phe-His-Leu-Leu-Arg-Glu-Met-Leu-Glu-Met- Ala-Arg-Ala-Glu-Gln-Glu-Ala-Glu-Gln-Ala-Ala-Leu-Asn-Arg- Leu-Leu-Leu-Glu-Glu-Ala-NH.sub.2. In the agonists, one or more of the first five N-terminal residues may be deleted or may be substituted by a peptide up to 10 amino acids long. A number of other substitutions may also be made throughout the chain. Similar peptides which function as CRF antagonists are created by deleting the first 7, 8 or 9 N-terminal residues. These analogs are coupled to a cytotoxin, such as gelonin, by a dialdehyde or the like, e.g., glutaraldehyde. The conjugates may be used to eliminate CRF Target Cells, and thus to regulate secretion of ACTH, .beta.-lipotropin and the like. Such conjugates can also be administered to alleviate conditions associated with hyperactivity of the hypothalamus-pituitary adrenal axis as well as neoplastic diseases associated with tumors that express CRF receptor.

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