Novel Tumor Suppressor Function of Glucocorticoid-Induced TNF Receptor GITR in Multiple Myeloma

Yang Liu, Phong Quang, Esteban D Braggio, Hai Ngo, Gayane Badalian-Very, Ludmila Flores, Yong Zhang, Antonio Sacco, Patricia Maiso, Abdel Kareem Azab, Feda Azab, Ruben Carrasco, Barrett J. Rollins, Aldo M. Roccaro, Irene M. Ghobrial

Research output: Contribution to journalArticle

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Abstract

Glucocorticoid-induced TNF receptor (GITR) plays a crucial role in modulating immune response and inflammation, however the role of GITR in human cancers is poorly understood. In this study, we demonstrated that GITR is inactivated during tumor progression in Multiple Myeloma (MM) through promoter CpG island methylation, mediating gene silencing in primary MM plasma cells and MM cell lines. Restoration of GITR expression in GITR deficient MM cells led to inhibition of MM proliferation in vitro and in vivo and induction of apoptosis. These findings were supported by the presence of induction of p21 and PUMA, two direct downstream targets of p53, together with modulation of NF-κB in GITR-overexpressing MM cells. Moreover, the unbalanced expression of GITR in clonal plasma cells correlated with MM disease progression, poor prognosis and survival. These findings provide novel insights into the pivotal role of GITR in MM pathogenesis and disease progression.

Original languageEnglish (US)
Article numbere66982
JournalPLoS One
Volume8
Issue number6
DOIs
StatePublished - Jun 13 2013

Fingerprint

myeloma
Tumor Necrosis Factor Receptors
glucocorticoids
Multiple Myeloma
Glucocorticoids
Tumors
receptors
neoplasms
Neoplasms
disease course
Disease Progression
Plasmas
CpG Islands
Methylation
glucocorticoid receptors
plasma cells
Gene Silencing
gene silencing
Restoration
Plasma Cells

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Novel Tumor Suppressor Function of Glucocorticoid-Induced TNF Receptor GITR in Multiple Myeloma. / Liu, Yang; Quang, Phong; Braggio, Esteban D; Ngo, Hai; Badalian-Very, Gayane; Flores, Ludmila; Zhang, Yong; Sacco, Antonio; Maiso, Patricia; Azab, Abdel Kareem; Azab, Feda; Carrasco, Ruben; Rollins, Barrett J.; Roccaro, Aldo M.; Ghobrial, Irene M.

In: PLoS One, Vol. 8, No. 6, e66982, 13.06.2013.

Research output: Contribution to journalArticle

Liu, Y, Quang, P, Braggio, ED, Ngo, H, Badalian-Very, G, Flores, L, Zhang, Y, Sacco, A, Maiso, P, Azab, AK, Azab, F, Carrasco, R, Rollins, BJ, Roccaro, AM & Ghobrial, IM 2013, 'Novel Tumor Suppressor Function of Glucocorticoid-Induced TNF Receptor GITR in Multiple Myeloma', PLoS One, vol. 8, no. 6, e66982. https://doi.org/10.1371/journal.pone.0066982
Liu, Yang ; Quang, Phong ; Braggio, Esteban D ; Ngo, Hai ; Badalian-Very, Gayane ; Flores, Ludmila ; Zhang, Yong ; Sacco, Antonio ; Maiso, Patricia ; Azab, Abdel Kareem ; Azab, Feda ; Carrasco, Ruben ; Rollins, Barrett J. ; Roccaro, Aldo M. ; Ghobrial, Irene M. / Novel Tumor Suppressor Function of Glucocorticoid-Induced TNF Receptor GITR in Multiple Myeloma. In: PLoS One. 2013 ; Vol. 8, No. 6.
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