Role of the BLT2, a leukotriene B4 receptor, in Ras transformation

Min Hyuk Yoo, Haiwon Song, Chang Hoon Woo, HeungGyu Kim, Jae-Hong Kim

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Oncogenic Ras is known to drive both the Rac and Raf-MAP-kinase pathways, which act in concert to cause cell transformation. Unlike the Raf-MAP-kinase cascade, however, the downstream elements of Rac pathway are not fully understood. Previously, we showed that cytosolic phospholipase A2 (cPLA2) and subsequent metabolism of arachidonic acid act downstream of Rac to mediate the transformation signaling induced by Ha-RasV12. In the present study, we observed that leukotriene B4 (LTB 4) and its synthetic enzymes as well as BLT2, the low-affinity LTB4 receptor, are all elevated in Ha-RasV12-transformed cells. In addition, the malignant phenotypes of Ras-transformed cells were markedly inhibited by BLT2 blockade, as was their tumorigenicity in vivo. Finally, in situ hybridization analysis revealed that expression of BLT2 is significantly upregulated in a variety of human cancers. Taken together, our results suggest that an LTB4-BLT2-linked cascade plays a crucial mediatory role in the cell transformation induced by oncogenic Ha-Ras V12, possibly acting downstream of Rac-cPLA2.

Original languageEnglish
Pages (from-to)9259-9268
Number of pages10
JournalOncogene
Volume23
Issue number57
DOIs
Publication statusPublished - 2004 Dec 9

Fingerprint

Leukotriene B4 Receptors
raf Kinases
Cytosolic Phospholipases A2
Leukotriene B4
MAP Kinase Signaling System
Arachidonic Acid
In Situ Hybridization
Phenotype
Enzymes
Neoplasms

Keywords

  • BLT2
  • Cancer
  • Leukotriene B
  • Ras transformation

ASJC Scopus subject areas

  • Molecular Biology
  • Cancer Research
  • Genetics

Cite this

Role of the BLT2, a leukotriene B4 receptor, in Ras transformation. / Yoo, Min Hyuk; Song, Haiwon; Woo, Chang Hoon; Kim, HeungGyu; Kim, Jae-Hong.

In: Oncogene, Vol. 23, No. 57, 09.12.2004, p. 9259-9268.

Research output: Contribution to journalArticle

Yoo, Min Hyuk ; Song, Haiwon ; Woo, Chang Hoon ; Kim, HeungGyu ; Kim, Jae-Hong. / Role of the BLT2, a leukotriene B4 receptor, in Ras transformation. In: Oncogene. 2004 ; Vol. 23, No. 57. pp. 9259-9268.
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