P75 neurotrophin receptor regulates BMP-induced SVZ neural stem cell migration.
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PROVIDER: PRJNA639162 | ENA |
REPOSITORIES: ENA
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Project description:RNA sequencing of neuronal stem/progenitor cells from wildtype and p75NTR-/- mice isolated at E12.5
2021-12-31 | GSE152396 | GEO
Project description:Neurotrophins (NTs) promotes angiogenesis and EC survival, via tropomyosin kinase trkA and trkB receptors. A different p75NTR receptor of NTs, which belongs to the TNF-alfa receptor superfamily, is not or scarcely expressed by endothelial cells (EC) and endothelial progenitor cells (EPC) under basal conditions. Both diabetes and muscular ischemia induce p75NTR in capillary EC. In this study, by gene transfer, we forced the expression of p75NTR in EC and EPC to study the effect on cell survival, proliferation, adhesion, migration, and capillary-like tubes formation on matrigel, which all resulted impaired by p75NTR. We identified that p75NTR inhibits the VEGF-A/Akt/eNOS/NO pro-angiogenesis/pro-EC survival pathway and reduces the mRNA contents of survivin and securin in EC. By Illumina technology and real-time PCR, we found that p75-NTR alters the expression of VEGF-A and beta-1 integrin, which are implicated in angiogenesis and cell survival. p75NTR transfer to ischemic murine limb muscles impaired neoangiogenesis and blood flow recovery and induced apoptosis of bone marrow Sca-1+/Lin- progenitor cells. Diabetes induced p75NTR in bone marrow Sca-1+/Lin- cells and this correlated with apoptosis. Finally, inhibition of p75NTR signaling in diabetic ischemic limb muscles restored proper muscular neovascularization and blood flow recovery. Keywords: Response to ectopic receptor expression on angiogenesis Two series of 4 mice each were treated with either control adenovirus (AdNull) or adenovirus expressing neurotrophin p75 receptor (AdP75). Anaesthetized mice received 3 adenovirus injections (for a total of 109 p.f.u. virus in 20 micro L) into 3 equidistant sites of the normoperfused or ischemic left adductor muscles, as described (2. Emanueli C, Graiani G, Salis MB, Gadau S, Desortes E, Madeddu P. Prophylactic gene therapy with human tissue kallikrein ameliorates limb ischemia recovery in type 1 diabetic mice. Diabetes. 2004 Apr;53(4):1096-103. )
2010-06-25 | E-GEOD-9910 | biostudies-arrayexpress
Project description:The cranial sutures are fibrous joints containing skeletal progenitor cells, which maintain homeostasis of the uninjured skull or participate in healing the skull after injury. Nerve growth factor (NGF) via its high-affinity receptor tropomyosin receptor kinase A (TrkA) regulates skeletal re-innervation, which is essential for later elements of bone repair, including revascularization and bone matrix deposition. However, emerging evidence suggests that NGF signaling may have more pleiotropic effects in bone repair than previously considered. In addition to induction of nerve ingrowth and promotion of nerve survival, pro-NGF may bind to its low-affinity receptor Ngfr (p75, Cd271), which is present in a variety of mesenchymal cells. p75 expression has been correlated to cell migration and invasion in multiple cell types. NGF binding to the p75 receptor stimulates migration and initiates recruitment of various adaptors, which activate NF-κB, RhoA, and c-Jun N-terminal kinase (JNK) signaling. In this study, single cell transcriptomics highlights altered signaling pathway activation and impaired cellular migration with p75 conditional gene deletion in PDGFRα-expressing cells.
2021-12-22 | GSE179890 | GEO
Project description:Neurotrophins (NTs) promotes angiogenesis and EC survival, via tropomyosin kinase trkA and trkB receptors. A different p75NTR receptor of NTs, which belongs to the TNF-alfa receptor superfamily, is not or scarcely expressed by endothelial cells (EC) and endothelial progenitor cells (EPC) under basal conditions. Both diabetes and muscular ischemia induce p75NTR in capillary EC. In this study, by gene transfer, we forced the expression of p75NTR in EC and EPC to study the effect on cell survival, proliferation, adhesion, migration, and capillary-like tubes formation on matrigel, which all resulted impaired by p75NTR. We identified that p75NTR inhibits the VEGF-A/Akt/eNOS/NO pro-angiogenesis/pro-EC survival pathway and reduces the mRNA contents of survivin and securin in EC. By Illumina technology and real-time PCR, we found that p75-NTR alters the expression of VEGF-A and beta-1 integrin, which are implicated in angiogenesis and cell survival. p75NTR transfer to ischemic murine limb muscles impaired neoangiogenesis and blood flow recovery and induced apoptosis of bone marrow Sca-1+/Lin- progenitor cells. Diabetes induced p75NTR in bone marrow Sca-1+/Lin- cells and this correlated with apoptosis. Finally, inhibition of p75NTR signaling in diabetic ischemic limb muscles restored proper muscular neovascularization and blood flow recovery. Keywords: Response to ectopic receptor expression on angiogenesis
2008-07-17 | GSE9910 | GEO
Project description:Comparative gene expression profiling of olfactory enshealting cells : p75 High vs p75 Low cells population
2011-07-20 | GSE30797 | GEO
Project description:Myeloid-to-mesenchymal NGF-p75 signaling coordinates cell migration during repair.
| PRJNA745466 | ENA
Project description:Comparative gene expression profiling of olfactory enshealting cells : p75 High vs p75 Low cells population Two-color experiment, p75 high(Cy5)/p75Low (Cy3). Biological replicates: 4 . Paired samples.
2011-07-19 | E-GEOD-30797 | biostudies-arrayexpress
Project description:A limited number of growth factors are capable of regulating numerous developmental processes, but how they accomplish this is unclear. In the gustatory system, brain-derived neurotrophic factor (BDNF) and neurotrophin-4 (NT4) have different developmental roles but exert their effects through the same receptors (TrkB and p75). Using genome wide expression analysis, we determined that BDNF and NT4 also regulate the expression of different sets of genes downstream of receptor signaling in geniculate ganglion. These differences in gene expression likely determine their different roles. BDNF and NT4 could function differently because of temporal or spatial differences of expression or the activation of different signaling pathways.
2013-02-28 | GSE44734 | GEO
Project description:The study has been focused on the characterization of the role of LEDGF/p75 in chemiresistance in pediatric leukemia Abstract: MLL is an aggressive subtype of leukemia with a poor prognosis that mostly affects pediatric patients. MLL-rearranged fusion proteins (MLLr) induce aberrant target gene expression resulting in leukemogenesis. MLL and its fusions are tethered to chromatin by LEDGF/p75, a transcriptional co-activator that specifically recognizes H3K36me2/3. LEDGF/p75 is ubiquitously expressed and associated with regulation of gene expression, autoimmune responses and HIV replication. LEDGF/p75 was proven to be essential for leukemogenesis in MLL. Apart from MLL, LEDGF/p75 has been linked to lung, breast and prostate cancer. Intriguingly, LEDGF/p75 interacts with Med-1, which co-localizes with BRD4. Both are known as co-activators of super-enhancers. Here, we describe LEDGF/p75-dependent chemoresistance of MLLr cell lines. Investigation of the underlying mechanism revealed a role of LEDGF/p75 in the cell cycle and in survival pathways and showed that LEDGF/p75 protects against apoptosis during chemotherapy. Remarkably, LEDGF/p75 levels also affected expression of BRD4 and Med1. Altogether, our data suggest a role of LEDGF/p75 in cancer survival, stem cell renewal, and activation of nuclear super enhancers.
2021-01-14 | GSE164751 | GEO
Project description:A limited number of growth factors are capable of regulating numerous developmental processes, but how they accomplish this is unclear. In the gustatory system, brain-derived neurotrophic factor (BDNF) and neurotrophin-4 (NT4) have different developmental roles but exert their effects through the same receptors (TrkB and p75). Using genome wide expression analysis, we determined that BDNF and NT4 also regulate the expression of different sets of genes downstream of receptor signaling in geniculate ganglion. These differences in gene expression likely determine their different roles. BDNF and NT4 could function differently because of temporal or spatial differences of expression or the activation of different signaling pathways. BDNF and NT4 regulate cell death, axonal growth and axonal guidance by altering gene expression. Because many of these functions of the two neurotrophins differ in taste development, each likely alters gene expression in a unique way. To determine if removal of BDNF and NT4 alters gene expression in different ways, I will compare microarray gene expression profiles in the geniculate ganglion among BDNF knockout, Nt4 knockout, and wild type mice during development.
2013-02-28 | E-GEOD-44734 | biostudies-arrayexpress