MRG1, the product of a melanocyte-specific gene related gene, is a cytokine-inducible transcription factor with transformation activity

Hui (Herb) Sun, Yuan Xiao Zhu, Tinggui Yin, George Sledge, Yu Chung Yang

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

Identification of cytokine-inducible genes is imperative for determining the mechanisms of cytokine action. A cytokine-inducible gene, mrg1 [melanocyte-specific gene (msg1) related gene], was identified through mRNA differential display of interleukin (IL) 9-stimulated and unstimulated mouse helper T cells. In addition to IL-9, mrg1 can be induced by other cytokines and biological stimuli, including IL-1α, -2, -4, -6, and -11, granulocyte/macrophage colony-stimulating factor, interferon λ, platelet- derived growth factor, insulin, serum, and lipopolysaccharide in diverse cell types. The induction of mrg1 by these stimuli appears to be transient, with induction kinetics similar to other primary response genes, implicating its role in diverse biological processes. Deletion or point mutations of either the Box1 motif (binds Janus kinase 1) or the signal transducer and activator of transcription 3 binding site-containing region within the intracellular domain of the IL-9 receptor ligand binding subunit abolished or greatly reduced mrg1 induction by IL-9, suggesting that the Janus kinase/signal transducer and activator of transcription signaling pathway is required for mrg1 induction, at least in response to IL-9. Transfection of mrg1 cDNA into TS1, an IL-9-dependent mouse T cell line, converted these cells to IL-9- independent growth through a nonautocrine mechanism. Overexpression of mrg1 in Rat1 cells resulted in loss of cell contact inhibition, anchorage- independent growth in soft agar, and tumor formation in nude mice, demonstrating that mrg1 is a transforming gene. MRG1 is a transcriptional activator and may represent a founding member of an additional family of transcription factors.

Original languageEnglish (US)
Pages (from-to)13555-13560
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume95
Issue number23
DOIs
StatePublished - Nov 10 1998
Externally publishedYes

Fingerprint

Interleukin-9
Melanocytes
Transcription Factors
Cytokines
Genes
Interleukin-9 Receptors
Janus Kinase 1
Contact Inhibition
Janus Kinases
Biological Phenomena
STAT3 Transcription Factor
Sequence Deletion
Platelet-Derived Growth Factor
Gene Expression Profiling
Granulocyte-Macrophage Colony-Stimulating Factor
Growth
Helper-Inducer T-Lymphocytes
Transducers
Interleukin-1
Oncogenes

ASJC Scopus subject areas

  • Genetics
  • General

Cite this

MRG1, the product of a melanocyte-specific gene related gene, is a cytokine-inducible transcription factor with transformation activity. / Sun, Hui (Herb); Zhu, Yuan Xiao; Yin, Tinggui; Sledge, George; Yang, Yu Chung.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 95, No. 23, 10.11.1998, p. 13555-13560.

Research output: Contribution to journalArticle

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