PMID- 23699531 OWN - NLM STAT- MEDLINE DCOM- 20130809 LR - 20220409 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 33 IP - 21 DP - 2013 May 22 TI - Progranulin does not bind tumor necrosis factor (TNF) receptors and is not a direct regulator of TNF-dependent signaling or bioactivity in immune or neuronal cells. PG - 9202-13 LID - 10.1523/JNEUROSCI.5336-12.2013 [doi] AB - Progranulin (PGRN) is a secreted glycoprotein expressed in neurons and glia that is implicated in neuronal survival on the basis that mutations in the GRN gene causing haploinsufficiency result in a familial form of frontotemporal dementia (FTD). Recently, a direct interaction between PGRN and tumor necrosis factor receptors (TNFR I/II) was reported and proposed to be a mechanism by which PGRN exerts anti-inflammatory activity, raising the possibility that aberrant PGRN-TNFR interactions underlie the molecular basis for neuroinflammation in frontotemporal lobar degeneration pathogenesis. Here, we report that we find no evidence for a direct physical or functional interaction between PGRN and TNFRs. Using coimmunoprecipitation and surface plasmon resonance (SPR) we replicated the interaction between PGRN and sortilin and that between TNF and TNFRI/II, but not the interaction between PGRN and TNFRs. Recombinant PGRN or transfection of a cDNA encoding PGRN did not antagonize TNF-dependent NFkappaB, Akt, and Erk1/2 pathway activation; inflammatory gene expression; or secretion of inflammatory factors in BV2 microglia and bone marrow-derived macrophages (BMDMs). Moreover, PGRN did not antagonize TNF-induced cytotoxicity on dopaminergic neuroblastoma cells. Last, co-addition or pre-incubation with various N- or C-terminal-tagged recombinant PGRNs did not alter lipopolysaccharide-induced inflammatory gene expression or cytokine secretion in any cell type examined, including BMDMs from Grn+/- or Grn-/- mice. Therefore, the neuroinflammatory phenotype associated with PGRN deficiency in the CNS is not a direct consequence of the loss of TNF antagonism by PGRN, but may be a secondary response by glia to disrupted interactions between PGRN and Sortilin and/or other binding partners yet to be identified. FAU - Chen, Xi AU - Chen X AD - Department of Physiology and Department of Pharmacology, Emory University, School of Medicine, Atlanta, Georgia 30322, USA. FAU - Chang, Jianjun AU - Chang J FAU - Deng, Qiudong AU - Deng Q FAU - Xu, Jie AU - Xu J FAU - Nguyen, Thi A AU - Nguyen TA FAU - Martens, Lauren H AU - Martens LH FAU - Cenik, Basar AU - Cenik B FAU - Taylor, Georgia AU - Taylor G FAU - Hudson, Kathryn F AU - Hudson KF FAU - Chung, Jaegwon AU - Chung J FAU - Yu, Kimberley AU - Yu K FAU - Yu, Phillip AU - Yu P FAU - Herz, Joachim AU - Herz J FAU - Farese, Robert V Jr AU - Farese RV Jr FAU - Kukar, Thomas AU - Kukar T FAU - Tansey, Malu G AU - Tansey MG LA - eng GR - P50 AG023501/AG/NIA NIH HHS/United States GR - P30 DK063720/DK/NIDDK NIH HHS/United States GR - P50 AG016574/AG/NIA NIH HHS/United States GR - R01 NS049433/NS/NINDS NIH HHS/United States GR - 5P50AG016574-14/AG/NIA NIH HHS/United States GR - NIH-HL20948/HL/NHLBI NIH HHS/United States GR - R00 AG032362/AG/NIA NIH HHS/United States GR - R37 HL063762/HL/NHLBI NIH HHS/United States GR - NIH-NINDS 5RO1NS049433-05/NS/NINDS NIH HHS/United States GR - P01 HL020948/HL/NHLBI NIH HHS/United States GR - HL63762/HL/NHLBI NIH HHS/United States GR - R01 HL063762/HL/NHLBI NIH HHS/United States GR - NIH-NIA 4R00AG032362-03/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - 0 (Adaptor Proteins, Vesicular Transport) RN - 0 (Culture Media, Conditioned) RN - 0 (Cytokines) RN - 0 (Granulins) RN - 0 (Grn protein, mouse) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Isoquinolines) RN - 0 (Lipopolysaccharides) RN - 0 (NF-kappa B) RN - 0 (Progranulins) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Recombinant Proteins) RN - 9654F8OVKE (lucifer yellow) RN - Z020Y8WIJ4 (sortilin) SB - IM MH - Adaptor Proteins, Vesicular Transport/metabolism MH - Analysis of Variance MH - Animals MH - Cell Line MH - Cell Proliferation/drug effects MH - Culture Media, Conditioned/pharmacology MH - Cytokines/*metabolism MH - Gene Expression Regulation/drug effects/genetics/*immunology MH - Granulins MH - Humans MH - Immunoprecipitation MH - Intercellular Signaling Peptides and Proteins/deficiency/genetics/*metabolism MH - Isoquinolines/metabolism MH - Lipopolysaccharides/pharmacology MH - MAP Kinase Signaling System/drug effects/immunology MH - Macrophages/drug effects/immunology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Microglia/drug effects/metabolism MH - NF-kappa B/metabolism MH - Progranulins MH - Protein Binding/genetics MH - Receptors, Tumor Necrosis Factor/genetics/*metabolism MH - Recombinant Proteins/pharmacology MH - Signal Transduction/drug effects/*physiology MH - Surface Plasmon Resonance MH - Transfection PMC - PMC3707136 MID - NIHMS483492 EDAT- 2013/05/24 06:00 MHDA- 2013/08/10 06:00 PMCR- 2013/11/22 CRDT- 2013/05/24 06:00 PHST- 2013/05/24 06:00 [entrez] PHST- 2013/05/24 06:00 [pubmed] PHST- 2013/08/10 06:00 [medline] PHST- 2013/11/22 00:00 [pmc-release] AID - 33/21/9202 [pii] AID - 5336-12 [pii] AID - 10.1523/JNEUROSCI.5336-12.2013 [doi] PST - ppublish SO - J Neurosci. 2013 May 22;33(21):9202-13. doi: 10.1523/JNEUROSCI.5336-12.2013.