Synthesis and biological evaluation of mouse growth hormone-releasing factor.
The recently described mouse growth hormone-releasing factor (mGRF) was synthesized by the solid phase procedure, purified by 2 stages of preparative high performance liquid chromatography and fully characterized. The biologic activity of the 42-amino acid peptide (H-His-Val-Asp-Ala-Ile-Phe- Thr-Thr-Asn-Tyr- Arg-Lys-Leu-Leu-Ser-Gln-Leu-Tyr-Ala-Arg-Lys-Val-Ile-Gln-Asp-Ile-Met-Asn- Lys- Gln-Gly-Glu-Arg-Ile- Gln-Glu-Gln-Arg-Ala-Arg-Leu-Ser-OH) was assessed in primary cultures of both mouse and rat anterior pituitary cells and compared to synthetic rat (rGRF) and human (hGRF) growth hormone-releasing factors. mGRF was equipotent to rGRF in mouse somatotrophs but slightly less potent in rat somatotrophs, while hGRF was 3-5 times less potent in both rodent species.
Heimer
E P
EP
Peptide Research Department, Roche Research Center, Hoffmann-La Roche Inc., Nutley, NJ.
Ahmad
M
M
Lambros
T J
TJ
Felix
A M
AM
Downs
T R
TR
Frohman
L A
LA
D000595:Amino Acid Sequence; D000818:Animals; D002478:Cells, Cultured; D013006:Growth Hormone / Q000378:metabolism; D013007:Growth Hormone-Releasing Hormone / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D006801:Humans; D008297:Male; D051379:Mice; D008969:Molecular Sequence Data; D010903:Pituitary Gland, Anterior / Q000187:drug effects / Q000378:metabolism; D051381:Rats; D011919:Rats, Inbred Strains
D013006:Growth Hormone; D013007:Growth Hormone-Releasing Hormone