Gene Set: DIRMEIER_LMP1_RESPONSE_LATE_UP

Standard name DIRMEIER_LMP1_RESPONSE_LATE_UP
Systematic name M4976
Brief description Cluster 3: genes up-regulated in B2264-19/3 cells (primary B lymphocytes) within 60-180 min after activation of LMP1 (an oncogene encoded by Epstein-Barr virus, EBV).
Full description or abstract Latent membrane protein 1 (LMP1), an oncoprotein encoded by Epstein-Barr virus (EBV), is an integral membrane protein, which acts like a constitutively active receptor. LMP1 is critical for some facet of EBV's induction and maintenance of proliferation of infected B cells. It, in part, mimics signaling by the CD40 receptor and has been implicated in regulating proliferation, survival, or both properties of EBV-infected cells. We established a conditional LMP1 allele in the context of the intact EBV genome to define the immediate-early cellular target genes regulated by LMP1 in order to assess its contributions to infected human B cells. The functional analysis of this conditional system indicated that LMP1 specifically induces mitogenic B-cell activation through c-myc and Jun/AP1 family members and confirms its direct role in upregulating expression of multiple genes with opposing activities involved in cell survival. LMP1's signals were found to be essential for the G1/S transition in human B cells; cells lacking LMP1's signals are cell cycle arrested and survive quiescently. LMP1's activities are therefore not required to maintain survival in nonproliferating cells. LMP1 does induce both pro- and antiapoptotic genes whose balance seems to permit survival during LMP1's induction and maintenance of proliferation.
Collection C2: curated gene sets
      CGP: chemical and genetic perturbations
Source publication Pubmed 15674340   Authors: Dirmeier U,Hoffmann R,Kilger E,Schultheiss U,Briseņo C,Gires O,Kieser A,Eick D,Sugden B,Hammerschmidt W
Exact source Table 1S: cluster 3
Related gene sets (show 2 additional gene sets from the source publication)

(show 41 gene sets from the same authors)
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Organism Homo sapiens
Contributed by Arthur Liberzon (MSigDB Team)
Source platform HUMAN_SEQ_ACCESSION
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Version history 3.0: First introduced

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