Regulation of the synthesis of the major surfactant apoprotein in fetal rabbit lung tissue

C. R. Mendelson, C. Chen, V. Boggaram, C. Zacharias, J. M. Snyder

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

Antibodies directed against the major apoprotein of rabbit lung surfactant, a 29-36-kDa glycoprotein, were used to study changes in the levels of translatable surfactant apoprotein mRNA in rabbit lung tissue during development, as well as the effects of cortisol and cyclic AMP analogues on the levels of surfactant apoprotein and its mRNA in fetal rabbit lung tissue in organ culture. The major surfactant apoprotein and its mRNA were undetectable in lung tissues of 21-day gestational age fetal rabbits. Translatable mRNA specific for the major surfactant apoprotein was first detectable in lung tissues of 26-day fetuses, increased 25-fold on day 28, reached peak levels at day 31, and declined after birth. Incubation of 21-day fetal rabbit lung explants with cortisol in serum-free medium resulted in an increase in the specific content of the 29-36-kDa apoprotein. Cyclic AMP analogues and forskolin, an activator of adenylate cyclase, also caused a marked increase in the accumulation of surfactant apoprotein. When fetal lung explants were incubated with cortisol and dibutyryl cyclic AMP in combination, the specific content of the surfactant apoprotein was increased to levels greater than that of explants treated with either cortisol or dibutyryl cyclic AMP alone. These effects of dibutyryl cyclic AMP and cortisol on surfactant apoprotein accumulation were associated with comparable changes in the levels of translatable surfactant apoprotein mRNA. Thus, we have shown for the first time that the induction of pulmonary surfactant apoprotein synthesis during differentiation in vitro and in vivo is associated with an increase in the level of translatable mRNA and that cortisol and cyclic AMP increase both the accumulation of the major surfactant apoprotein and the corresponding mRNA in fetal rabbit lung tissue in vitro.

Original languageEnglish (US)
Pages (from-to)9938-9943
Number of pages6
JournalJournal of Biological Chemistry
Volume261
Issue number21
StatePublished - 1986

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Apoproteins
Surface-Active Agents
Tissue
Rabbits
Lung
Hydrocortisone
Messenger RNA
Bucladesine
Cyclic AMP
Organ Culture Techniques
Serum-Free Culture Media
Colforsin
Adenylyl Cyclases
Gestational Age
Glycoproteins
Fetus
Parturition

ASJC Scopus subject areas

  • Biochemistry

Cite this

Regulation of the synthesis of the major surfactant apoprotein in fetal rabbit lung tissue. / Mendelson, C. R.; Chen, C.; Boggaram, V.; Zacharias, C.; Snyder, J. M.

In: Journal of Biological Chemistry, Vol. 261, No. 21, 1986, p. 9938-9943.

Research output: Contribution to journalArticle

Mendelson, CR, Chen, C, Boggaram, V, Zacharias, C & Snyder, JM 1986, 'Regulation of the synthesis of the major surfactant apoprotein in fetal rabbit lung tissue', Journal of Biological Chemistry, vol. 261, no. 21, pp. 9938-9943.
Mendelson, C. R. ; Chen, C. ; Boggaram, V. ; Zacharias, C. ; Snyder, J. M. / Regulation of the synthesis of the major surfactant apoprotein in fetal rabbit lung tissue. In: Journal of Biological Chemistry. 1986 ; Vol. 261, No. 21. pp. 9938-9943.
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