Vitellogenic Blood Protein Synthesis by Insect Fat Body

Abstract

The female fat body of a moth and a roach incorporated labeled amino acids in vitro into substances precipitable by antibodies formed in response to the sex-limited vitellogenic blood proteins of these species. The fat body of males failed to do so, as did that of females before the appearance of these proteins in the blood.

Multiple piscine vitellogenins: biomarkers of fish exposure to estrogenic endocrine disruptors in aquatic environments

“…The term "vitellogenin" was first used by Pan et al (1969) to describe a female-specific protein in the hemolymph of the Cecropia moth. In teleost fishes, Hara and Hirai (1976) discovered an iron-binding female-specific serum protein (FSSP) in chum salmon (Oncorhynchus keta) and rainbow trout (O. mykiss).…”

Vitellogenesis and choriogenesis in fishes

“…We also discovered a female-specific iron-binding serum protein (FS) in rainbow trout Oncorhynchus mykiss and chum salmon O. keta [15] while analyzing interspecies differences in electrophoretic patterns of serum proteins. In 1969, in the field of entomology, such female-specific proteins expressed in the blood (body fluid) during oogenesis were named 'vitellogenin (Vtg)' (vitelline + genin, meaning source of egg yolk) [16], and the name has been used ever since for proteins specifically expressed in the blood of maturing females in oviparous vertebrates. In general, Vtg in oviparous vertebrates is a lipoglycophosphoprotein and serves as a major precursor of egg yolk proteins stored as essential nutrients for future embryogenesis.…”

Untitled

“…29 The term vitellogenesis means the process of synthesizing yolk platelets and includes vitellogenin formation from the liver. 30 Follett and Redshaw 30 (1967) used serum lipophosphoprotein (SLPP) to substitute for vitellogenin.…”

“…They were maintained in a natural environment with an approximate 12 hours light/dark cycle. The ambient temperature was [25][26][27][28][29][30][31][32][33][34][35] o C, and the relative humidity ranged from 80 to 100%. Pelleted frog feeds were given daily in the afternoon.…”