University of Wisconsin–Madison

Lixin Rui, PhD

Assistant Professor, Medicine (Hematology/Oncology)

lrui@medicine.wisc.edu

608-265-8525

4053 WIMR
1111 Highland Ave

Lab Website
Rui Lab

Lixin Rui

Research Interests

The major research interest in our laboratory is the mechanisms of the JAK-STAT signaling pathway in lymphomagenesis. We previously studied primary mediastinal and Hodgkin lymphoma, both of which share biological and molecular features. One common genetic change in these two cancers is an amplification of chromosome 9p24 region where JAK2 resides. JAK2 and the co-amplified JMJD2C, a gene encoding histone demethylase, cooperate to promote tumor growth. The molecular mechanism of this synergism is histone modifications with H3K9 demethylation by JMJD2C and H3Y41 phosphorylation by JAK2, both of which lead to opening up chromatin structure for gene transcription. Some of JAK2 target genes will be potential molecular targets since their expression is required for cancer cell survival. Recently, we have extended this finding and discovered a similar epigenetic mechanism by the other family member JAK1 in aggressive diffuse large B-cell lymphoma. We will employ a multidisciplinary approach, using biochemistry, RNA interference, DNA microarray, next-generation sequencing, and systems biology methods, to identify JAK1 target genes in this lymphoma.

Our interests also include investigation of the F-box protein FBXO10. Our recent work has characterized FBXO10 as a potential tumor suppressor. As the ubiquitin E3 ligase, FBXO10 targets the anti-apoptotic protein BCL2 for degradation. The gene FBXO10 is infrequently mutated in diffuse large-B cell lymphomas but has reduced expression in a vast majority of these patient samples. We will collaborate with Dr. Michael Gould to dissect FBXO10 function in vivo using FBXO10 knockout murine models established in his lab.

Honors & Awards

  • 2014- UW ICTR KL2 Scholar Award
  • 2013 – Editorial Board, Journal of Hematology and Transfusion
  • 2006-2007 – CJ Martin Postdoctoral Fellowship from NHMRC of Australia

Selected Publications

(Find publications on PubMed)

  • Zhu F, Hwang B, Miyamoto S, Rui L. Nuclear Import of JAK1 is Mediated by a Classical NLS and is Required for Survival of Diffuse Large B-cell Lymphoma. Mol Cancer Res. 2017; 15(3): 348-357.
  • Rui L, Drennan AC, Ceribelli M, Zhu F, Wright GW, Huang D, Xiao W, Li Y, Grindle KM, Lu L, Hodson DJ, Shaffer AL, Zhao H, Xu W, Yang Y, and Staudt LM. Epigenetic gene regulation by Janus kinase 1 in diffuse large B cell lymphoma. Proc Natl Acad Sci U S A. 2016; 113(46): E7260-E7267.
  • Li Y, Bouchlaka MN, Wolff J, Grindle KM, Lu L, Qian S, Zhong X, Pflum N, Jobin P, Kahl BS, Eickhoff JC, Wuerzberger-Davis SM, Miyamoto S, Thomas CJ, Yang DT, Capitini CM, Rui L. FBXO10 Deficiency and BTK Activation Upregulate BCL2 Expression in Mantle Cell Lymphoma. Oncogene.  2016; 35(48): 6223-6234.
  • Chiorazzi M*, Rui L*, Yang Y, Ceribelli M, Tishbi N, Maurer CW, Ranuncolo SM, Zhao H, Xu W, Chan WC, Jaffe ES, Gascoyne RD, Campo E, Rosenwald A, Ott G, Delabie J, Rimsza LM, Shaham S, Staudt LM. Proc Natl Acad Sci U S A. 2013; 110(10):3943-8.