Interleukin-2 induces proliferation of T lymphocyte mutants lacking protein kinase C

Gordon Mills, Peggy Girard, Sergio Grinstein, Erwin W. Gelfand

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

We have identified a murine T lymphocyte clone that apparently lacks diacylglycerol- and phospholipid-activated protein kinase C (PKC): cell extracts do not display phosphatidylserine, Ca2+, or phorbol ester-dependent phosphotransferase activity; the enzyme was not detected in immunoblots with PKC-specific antibodies; phorbol ester binding sites are not detectable in intact cells; and activators of PKC do not stimulate proliferation or Na+ H+ exchange in intact cells. Only PKC beta mRNA was detected in normal murine T lymphocytes. The mutant T lymphocytes contained amounts of 4.4 kb PKC beta message similar to those in normal murine lymphocytes, but the 2.9 kb and 1.2 kb messages found in normal lymphocytes were barely detectable. No abnormalities were detected on Southern analysis, suggesting that the abnormality may be at the level of message splicing or stability. Since PKC-deficient cells proliferate in response to the T lymphocyte growth factor, interleukin-2, we conclude that activation of PKC is not essential for the growth-promoting action of interleukin-2.

Original languageEnglish (US)
Pages (from-to)91-100
Number of pages10
JournalCell
Volume55
Issue number1
DOIs
StatePublished - Oct 7 1988
Externally publishedYes

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T-cells
Mutant Proteins
Protein Kinase C
Interleukin-2
T-Lymphocytes
Protein Kinase C beta
Lymphocytes
Phorbol Esters
Phosphatidylserines
Diglycerides
Cell Extracts
Phospholipids
Intercellular Signaling Peptides and Proteins
Phosphotransferases
Clone Cells
Chemical activation
Binding Sites
Messenger RNA
Antibodies
Enzymes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Interleukin-2 induces proliferation of T lymphocyte mutants lacking protein kinase C. / Mills, Gordon; Girard, Peggy; Grinstein, Sergio; Gelfand, Erwin W.

In: Cell, Vol. 55, No. 1, 07.10.1988, p. 91-100.

Research output: Contribution to journalArticle

Mills, Gordon ; Girard, Peggy ; Grinstein, Sergio ; Gelfand, Erwin W. / Interleukin-2 induces proliferation of T lymphocyte mutants lacking protein kinase C. In: Cell. 1988 ; Vol. 55, No. 1. pp. 91-100.
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