Role of HNF4a in osteoblasts [RNA-seq]
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE190315 | GEO | 2023/06/07
REPOSITORIES: GEO
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Project description:Disease relapse and resistance to chemotherapy represent challenging issues in a subset of Hodgkin Lymphoma (HL) patients. Activity and mechanism(s) of action of a novel PI3K/ERK dual inhibitor AEZS-136 (Ãterna Zentaris GmbH, Germany, EU) were examined in L-540, SUP-HD1, KM-H2 and L-428 cell lines. Despite exposure to AEZS-136 induced a significant cell growth inhibition (range, 30-80%), levels of caspase-independent cell death and mitochondrial dysfunction, were only observed in L-540 (62 ±9 vs 14 ±3%, P â¤.0001) and SUP-HD1 (46 ±2% vs 15 ±2%, P â¤.0001) cells. Gene expression profiling indicated that the effects of AEZS-136 treatment are associated with the modulation of cell cycle and cell death pathways. Exposure to AEZS-136 resulted in sustained production of reactive oxygen species (ROS) and activation of necroptotic cell death. The necroptosis inhibitor Necrostatin-1 prevented AEZS-136-induced ROS production, mitochondrial injury, activation of JNK and cell death. Knockdown experiments identified the immediate early response 3 (IER3) as a key signaling molecule that mediates AEZS-136-resistance to oxidative death of HL cells. Furthermore, in vivo xenograft studies demonstrated a 40-70% reduction in tumor burden (P < 0.0001) and a 10-fold increase in tumor necrosis in AEZS-136-treated animals compared to control mice. These data support further clinical evaluation of AEZS-136 in refractory/relapsed HL. The Hodgkin lymphoma cell lines were obtained from the DSMZ (Braunschweig, Germany, EU). Cells were routinely maintained in RPMI medium 1640 (Lonza, Basel, Switzerland) supplemented with 20% FBS (Lonza) and 2 mM glutamine (Lonza). Cells were maintained at 37°C in a water-saturated atmosphere of 5% CO2 in air. 4x106 HL cells were seeded in 75 cm2 flask and, after 24 hrs, cells were treated with 10 µM AEZS-136 (Aeterna Zentaris, Frankfurt, Germany, EU) in culture medium for 24 hours. At the end of treatment, cells were collected and RNA extracted.
2016-07-03 | E-GEOD-58899 | biostudies-arrayexpress
Project description:Disease relapse and resistance to chemotherapy represent challenging issues in a subset of Hodgkin Lymphoma (HL) patients. Activity and mechanism(s) of action of a novel PI3K/ERK dual inhibitor AEZS-136 (Ãterna Zentaris GmbH, Germany, EU) were examined in L-540, SUP-HD1, KM-H2 and L-428 cell lines. Despite exposure to AEZS-136 induced a significant cell growth inhibition (range, 30-80%), levels of caspase-independent cell death and mitochondrial dysfunction, were only observed in L-540 (62 ±9 vs 14 ±3%, P â¤.0001) and SUP-HD1 (46 ±2% vs 15 ±2%, P â¤.0001) cells. Gene expression profiling indicated that the effects of AEZS-136 treatment are associated with the modulation of cell cycle and cell death pathways. Exposure to AEZS-136 resulted in sustained production of reactive oxygen species (ROS) and activation of necroptotic cell death. The necroptosis inhibitor Necrostatin-1 prevented AEZS-136-induced ROS production, mitochondrial injury, activation of JNK and cell death. Knockdown experiments identified the immediate early response 3 (IER3) as a key signaling molecule that mediates AEZS-136-resistance to oxidative death of HL cells. Furthermore, in vivo xenograft studies demonstrated a 40-70% reduction in tumor burden (P < 0.0001) and a 10-fold increase in tumor necrosis in AEZS-136-treated animals compared to control mice. These data support further clinical evaluation of AEZS-136 in refractory/relapsed HL. The Hodgkin lymphoma cell lines were obtained from the DSMZ (Braunschweig, Germany, EU). Cells were routinely maintained in RPMI medium 1640 (Lonza, Basel, Switzerland) supplemented with 20% FBS (Lonza) and 2 mM glutamine (Lonza). Cells were maintained at 37°C in a water-saturated atmosphere of 5% CO2 in air. 4x106 HL cells were seeded in 75 cm2 flask and, after 24 hrs, cells were treated with 10 µM AEZS-136 (Aeterna Zentaris, Frankfurt, Germany, EU) in culture medium for 2 hours. At the end of treatment, cells were collected and RNA extracted.
2016-07-03 | E-GEOD-71150 | biostudies-arrayexpress
Project description:Relapsed/refractory Hodgkin lymphoma (HL) is an unmet medical need requiring new therapeutic options. Interactions between the histone deacetylase inhibitor Givinostat and the RAF/MEK/ERK inhibitor Sorafenib were examined in HDLM-2 and L-540 HL cell lines. Exposure to Givinostat/Sorafenib induced a synergistic inhibition of cell growth (range, 70- 80%) and a dramatic increase in cell death (up to 96%) due to increased H3 and H4 acetylation and strong mitochondrial injury. Gene expression profiling indicated that the synergistic effects of Givinostat/Sorafenib treatment are associated with the modulation of cell cycle and cell death pathways. Exposure to Givinostat/Sorafenib resulted in sustained production of reactive oxygen species (ROS) and activation of necroptotic cell death. The necroptosis inhibitor Necrostatin-1 prevented Givinostat/Sorafenib-induced ROS production, mitochondrial injury, activation of BH3-only protein BIM and cell death. Knockdown experiments identified BIM as a key signaling molecule that mediates Givinostat/Sorafenib-induced oxidative death of HL cells. Furthermore, in vivo xenograft studies demonstrated a 50% reduction in tumor burden (P < 0.0001), a 5- to 15-fold increase in BIM expression (P M-bM-^IM-$.0001) and a 4-fold increase in tumor necrosis in Givinostat/Sorafenib-treated animals compared to mice that received the single agents. These results provide a rationale for exploring Givinostat/Sorafenib combination in relapsed/refractory HL. The Hodgkin lymphoma cell line L-540 was obtained from the DSMZ (Braunschweig, Germany, EU). Cells were routinely maintained in RPMI medium 1640 (Lonza, Basel, Switzerland) supplemented with 20% FBS (Lonza) and 2 mM glutamine (Lonza). Cells were maintained at 37M-BM-0C in a water-saturated atmosphere of 5% CO2 in air. 10x10^6 L-540 cells were seeded in 75 cm2 flask and, after 24 hrs, cells were treated with 100 nM Givinostat (Italfarmaco SpA, Milan, Italy, EU) and/or 5 M-BM-5M sorafenib (Bayer, Berlin,M-bM-^@M-(Germany, EU) in culture medium for 24 hours. At the end of treatment, cells were collected and RNA was extracted.
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