Immunoreactive growth hormone production by human lymphocyte cell lines

Ting Lin Kao, Scott C. Supowit, E. Aubrey Thompson, Walter J. Meyer

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

1. Two human lymphocyte cell lines, a T-cell line and a B-cell line, were shown to produce and secrete immunoreactive growth hormone (irGH). The irGH molecules secreted by the two cell lines appeared to be de novo synthesized and their molecular size was similar to that of pituitary GH as well as irGH secreted by peripheral blood lymphocytes. 2. Affinity-purified irGH molecules had human growth hormone (hGH)-like mitogenic activity on Nb2 cells. These findings indicate that the irGH molecules produced by H9 and IM9 were similar to hGH in structure. 3. However, the irGH messages could not be amplified by polymerase chain reaction (PCR) primers which had been demonstrated to be able to amplify reverse-transcribed hGH messenger RNA successfully, suggesting that the lymphocyte-derived irGH and pituitary hGH are not exactly identical molecules. 4. We conclude that the H9 and IM9 cells produce a growth hormone-related molecule whose structure is different from that in the anterior pituitary.

Original languageEnglish (US)
Pages (from-to)483-498
Number of pages16
JournalCellular and Molecular Neurobiology
Volume12
Issue number5
DOIs
StatePublished - Oct 1992

Keywords

  • cell culture
  • growth hormone
  • lymphocytes
  • pituitary
  • polymerase chain reaction

ASJC Scopus subject areas

  • Neuroscience(all)
  • Genetics
  • Clinical Biochemistry
  • Cell Biology

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