Joel L Pomerantz

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The activation of NF-kappaB by receptors in the tumor necrosis factor (TNF) receptor and Toll/interleukin-1 (IL-1) receptor families requires the TRAF family of adaptor proteins. Receptor oligomerization causes the recruitment of TRAFs to the receptor complex, followed by the activation of a kinase cascade that results in the phosphorylation of IkappaB.(More)
NF-kappaB is a transcription factor that is critical for innate and adaptive immunity. Recently, a noncanonical pathway for NF-kappaB activation has emerged. Four recent papers provide physiological roles for this pathway and expand our understanding of lymphoid development and organogenesis with potential applications in the treatment of autoimmune disease.
PKC isoforms and CARMA1 play crucial roles in immunoreceptor-dependent NF-kappaB activation. We tested whether PKC-dependent phosphorylation of CARMA1 directly regulates this signaling cascade. B cell antigen receptor (BCR) engagement led to the progressive recruitment of CARMA1 into lipid rafts and to the association of CARMA1 with, and phosphorylation by,(More)
The homeodomain is a highly conserved structural module that binds DNA and participates in protein-protein interactions. Most homeodomains contain residues at positions 47 and 51 which mediate recognition of a TAAT core binding sequence in the major groove. The constraints imposed on the identity of these residues by homeodomain structure and DNA docking(More)
Minocycline is a tetracycline family antibiotic that has anti-inflammatory and immunomodulatory properties. These properties have shown promise in the treatment of conditions such as rheumatoid arthritis, Huntington disease, and multiple sclerosis. As lymphocyte activation is involved in the pathogenesis of many of these diseases, T cells are postulated to(More)
NF-kappaB is a critical target of signaling downstream of the T cell receptor (TCR) complex, but how TCR signaling activates NF-kappaB is poorly understood. We have developed an expression cloning strategy that can identify catalytic and noncatalytic molecules that participate in different pathways of NF-kappaB activation. Screening of a mouse thymus cDNA(More)
The alpha/immediate early genes of herpes simplex virus are regulated by the specific assembly of a multiprotein enhancer complex containing the Oct-1 POU domain protein, the viral alpha-transinduction factor alpha TIF, (VP16, ICP25), and the C1 cellular factor. The C1 factor from mammalian cells is a heterogeneous but related set of polypeptides that(More)
Designing DNA-binding proteins with novel sequence specificities may provide valuable tools for biological research and gene therapy. Computer modeling was used to design a dimeric zinc finger protein, ZFGD1, containing zinc fingers 1 and 2 from Zif268 and a portion of the dimerization domain of GAL4. ZFGD1 binds with high affinity and specificity to the(More)
HIV-1 latency in resting CD4(+) T cells represents a major barrier to virus eradication in patients on highly active antiretroviral therapy (HAART). Eliminating the latent HIV-1 reservoir may require the reactivation of viral gene expression in latently infected cells. Most approaches for reactivating latent HIV-1 require nonspecific T cell activation,(More)
The regulated activation of NF-κB by antigen receptor signaling is required for normal B and T lymphocyte activation during the adaptive immune response. Dysregulated NF-κB activation is associated with several types of lymphoma, including diffuse large B cell lymphoma (DLBCL). During normal antigen receptor signaling, the multidomain scaffold protein(More)