Medical College of Wisconsin
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Guan Chen MD, PhD

Guan Chen MD, PhD

Professor

Institution: Medical College of Wisconsin
Department: Pharmacology and Toxicology
Program: Program Development

Member of the Cancer Center

View Curriculum Vitae

Research Experience

  • Cancer Signaling, Ras Oncogenesis, Nuclear Receptors

    • Publications

  • p38γ Mitogen-activated protein kinase signals through phosphorylating its phosphatase PTPH1 in regulating ras protein oncogenesis and stress response. (Hou S, Suresh PS, Qi X, Lepp A, Mirza SP, Chen G) J Biol Chem 2012 Aug 10;287(33):27895-905 PMID: 22730326 PMCID: PMC3431700 06/26/2012
  • p38γ mitogen-activated protein kinase (MAPK) confers breast cancer hormone sensitivity by switching estrogen receptor (ER) signaling from classical to nonclassical pathway via stimulating ER phosphorylation and c-Jun transcription. (Qi X, Zhi H, Lepp A, Wang P, Huang J, Basir Z, Chitambar CR, Myers CR, Chen G) J Biol Chem 2012 Apr 27;287(18):14681-91 PMID: 22399296 PMCID: PMC3340246 03/09/2012
  • Phosphorylation and stabilization of topoisomerase IIα protein by p38γ mitogen-activated protein kinase sensitize breast cancer cells to its poisons. (Qi X, Hou S, Lepp A, Li R, Basir Z, Lou Z, Chen G) J Biol Chem 2011 Oct 14;286(41):35883-90 PMID: 21878638 PMCID: PMC3195563 09/01/2011
  • PTPH1 cooperates with vitamin D receptor to stimulate breast cancer growth through their mutual stabilization. (Zhi HY, Hou SW, Li RS, Basir Z, Xiang Q, Szabo A, Chen G) Oncogene 2011 Apr 7;30(14):1706-15 PMID: 21119599 PMCID: PMC3072445 12/02/2010
  • PTPH1 dephosphorylates and cooperates with p38gamma MAPK to increase ras oncogenesis through PDZ-mediated interaction. (Hou SW, Zhi HY, Pohl N, Loesch M, Qi XM, Li RS, Basir Z, Chen G) Cancer Res 2010 Apr 1;70(7):2901-10 PMID: 20332238 PMCID: PMC2848905 03/25/2010
  • p38gamma MAPK cooperates with c-Jun in trans-activating matrix metalloproteinase 9. (Loesch M, Zhi HY, Hou SW, Qi XM, Li RS, Basir Z, Iftner T, Cuenda A, Chen G) J Biol Chem 2010 May 14;285(20):15149-58 PMID: 20231272 PMCID: PMC2865276 03/17/2010
  • The p38 MAPK stress pathway as a tumor suppressor or more? (Loesch M, Chen G) Front Biosci 2008;13:3581-93 PMID: 18508457 PMCID: PMC4758212 05/30/2008
  • p38alpha antagonizes p38gamma activity through c-Jun-dependent ubiquitin-proteasome pathways in regulating Ras transformation and stress response. (Qi X, Pohl NM, Loesch M, Hou S, Li R, Qin JZ, Cuenda A, Chen G) J Biol Chem 2007 Oct 26;282(43):31398-408 PMID: 17724032 08/29/2007
  • Stress-induced c-Jun-dependent Vitamin D receptor (VDR) activation dissects the non-classical VDR pathway from the classical VDR activity. (Li QP, Qi X, Pramanik R, Pohl NM, Loesch M, Chen G) J Biol Chem 2007 Jan 19;282(3):1544-51 PMID: 17121851 11/24/2006
  • p38gamma mitogen-activated protein kinase integrates signaling crosstalk between Ras and estrogen receptor to increase breast cancer invasion. (Qi X, Tang J, Loesch M, Pohl N, Alkan S, Chen G) Cancer Res 2006 Aug 1;66(15):7540-7 PMID: 16885352 PMCID: PMC2174269 08/04/2006
  • Essential role of p38gamma in K-Ras transformation independent of phosphorylation. (Tang J, Qi X, Mercola D, Han J, Chen G) J Biol Chem 2005 Jun 24;280(25):23910-7 PMID: 15851477 PMCID: PMC1224721 04/27/2005
  • p38 MAPK activation selectively induces cell death in K-ras-mutated human colon cancer cells through regulation of vitamin D receptor. (Qi X, Tang J, Pramanik R, Schultz RM, Shirasawa S, Sasazuki T, Han J, Chen G) J Biol Chem 2004 May 21;279(21):22138-44 PMID: 15037631 03/24/2004
  • Estrogen receptor inhibits c-Jun-dependent stress-induced cell death by binding and modifying c-Jun activity in human breast cancer cells. (Qi X, Borowicz S, Pramanik R, Schultz RM, Han J, Chen G) J Biol Chem 2004 Feb 20;279(8):6769-77 PMID: 14638681 11/26/2003
  • p38 isoforms have opposite effects on AP-1-dependent transcription through regulation of c-Jun. The determinant roles of the isoforms in the p38 MAPK signal specificity. (Pramanik R, Qi X, Borowicz S, Choubey D, Schultz RM, Han J, Chen G) J Biol Chem 2003 Feb 14;278(7):4831-9 PMID: 12475989 12/12/2002
  • The p38 and JNK pathways cooperate to trans-activate vitamin D receptor via c-Jun/AP-1 and sensitize human breast cancer cells to vitamin D(3)-induced growth inhibition. (Qi X, Pramanik R, Wang J, Schultz RM, Maitra RK, Han J, DeLuca HF, Chen G) J Biol Chem 2002 Jul 19;277(29):25884-92 PMID: 11983707 05/02/2002
  • The p38 pathway provides negative feedback for Ras proliferative signaling. (Chen G, Hitomi M, Han J, Stacey DW) J Biol Chem 2000 Dec 15;275(50):38973-80 PMID: 10978313 09/09/2000
    • Last update: 05/06/2015