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. 1989 May;86(9):3342–3345. doi: 10.1073/pnas.86.9.3342

Developmental control of lymphokine gene expression in fetal thymocytes during T-cell ontogeny.

S R Carding 1, E J Jenkinson 1, R Kingston 1, A C Hayday 1, K Bottomly 1, J J Owen 1
PMCID: PMC287128  PMID: 2497464

Abstract

We have used the technique of in situ hybridization to investigate the expression of lymphokine genes by immature thymocytes during intrathymic development. In 13-day fetal thymocytes a population of cells constitutively produces low levels of interleukin 2 (IL-2) and interleukin 4 (IL-4) mRNAs. A second phase of lymphokine gene expression occurs in the majority of 15-day thymocytes, and a population of cells constitutively produces both IL-2 and IL-4 mRNAs. Thymocytes at 14 days of gestation and after 16 days up until birth do not express detectable lymphokine mRNA. By contrast, the population of IL-2 receptor mRNA-producing thymocytes increases progressively up to 15 days of gestation, and expression thereafter decreases up to birth. In addition, thymocytes expressing interferon gamma mRNA were not present until just prior to birth. Our findings indicate developmental control of lymphokine and lymphokine receptor gene expression in fetal thymocytes during ontogeny.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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