Diana Legarda-Addison

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TNF receptor 1 (TNFR1) can trigger opposing responses within the same cell: a prosurvival response or a cell-death pathway [1, 2]. Cell survival requires NF-kappaB-mediated transcription of prosurvival genes [3-9]; apoptosis occurs if NF-kappaB signaling is blocked [5, 7-9]. Hence, activation of NF-kappaB acts as a cell-death switch during TNF signaling.(More)
On detecting viral RNAs, the RNA helicase retinoic acid-inducible gene I (RIG-I) activates the interferon regulatory factor 3 (IRF3) signalling pathway to induce type I interferon (IFN) gene transcription. How this antiviral signalling pathway might be negatively regulated is poorly understood. Microarray and bioinformatic analysis indicated that the(More)
TNF receptor 1 (TNFR1) ligation can result in cell survival or cell death. What determines which of the two opposing responses is triggered is not fully understood. The current model suggests that it is the activation of the NF-kappaB pathway and its induction of prosurvival genes, or the lack thereof, which determines the outcome. NF-kappaB essential(More)
B cell maturation Ag (BCMA), a member of the TNFR superfamily expressed on B cells, binds to a proliferation-inducing ligand (APRIL) and B cell-activating factor of the TNF family (BAFF) but the specific B cell responses regulated by BCMA remain unclear. This study demonstrates that ligation of A20 B cells transfected with BCMA induces the expression of(More)
TNF receptor 1 (TNFR1) can trigger opposing responses within the same cell: a prosurvival response or a cell-death pathway [1, 2]. Cell survival requires NF-kB-mediated transcription of prosurvival genes [3–9]; apoptosis occurs if NF-kB signaling is blocked [5, 7–9]. Hence, activation of NF-kB acts as a cell-death switch during TNF signaling. This study(More)
The positive regulation of the NF-kappaB-signaling pathway in response to TCR stimulation has been well-studied. However, little is known about the negative regulation of this pathway in T cells. This negative regulation is crucial in controlling the duration of TCR signaling and preventing abnormal lymphocyte activation and proliferation. Therefore,(More)
TNF receptor 1 (TNFR1) ligation can result in cell survival or cell death. What determines which of the two opposing responses is triggered is not fully understood. The current model suggests that it is the activation of the NF-κB pathway and its induction of pro-survival genes, or the lack thereof, which determines the outcome. NF-κB essential modifier(More)
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