Project description:Validation of a FAM98C KO in HEK Flp-In T-REx 293 cells by quantifying the occurrence of FAM98C-specific peptides in whole cell lysates with LC-MSMS. WT HEK Flp-In T-REx 293 cells were used as control.
Project description:HER2 transduced cells which we will refer to as HER2-DOX –. These cells are 99% GFP positive (i.e., 99% cells have HER2 transduced, un-induced). As a control, we had GFP empty vector transduced MCF10A cells (95% have GFP transduced). Both cell types in triplicates. We had 4 time-points 0h, 30 mins, 4hours, and 7 hours (time duration for which HER2 will be induced). DOX was added to the GFP-MCF10A cells as a control. Only 1ug/ml of DOX was be used.
Project description:The overall cellular response to oxidative stress generated by Ero1M-NM-1 in the lumen of the mammalian endoplasmic reticulum (ER) is poorly characterized. Here, we investigate the effects of overexpressing a hyperactive mutant (C104A/C131A) of Ero1M-NM-1. Using microarray analysis, we demonstrate that the cell reacts to the oxidative challenge caused by Ero1M-NM-1 hyperactivity by turning on the unfolded protein response. Our findings suggest that the hyperoxidation generated by Ero1M-NM-1-C104A/C131A is addressed in the ER lumen and is unlikely to exert oxidative injury throughout the cell. Human embryonic kidney 293 Flp-In T-REx cells (Invitrogen) overexpressing Ero1M-NM-1-WT and Ero1M-NM-1-C104A/C131A were grown in triplicates and expression was either not induced or induced doxycycline (dox) for 24 h. Extracted RNA was hybridized on Affymetrix microarrays and genes with significantly different expression levels between the four categories were identified by a two-way analysis of variance (ANOVA), where the cell line (Ero1M-NM-1-WT or Ero1M-NM-1-C104A/C131A) and induction status (-dox/+dox) were used as the two factors for the p-value calculation.
Project description:Mitochondrial proteases regulate the dynamic properties of the organelle morphology and ensure functional plasticity at the cellular level. The metalloprotease OMA1 mediates constitutive and stress-inducible processing of its substrates in mitochondria, but the number of functionally characterized substrates remains limited. Using multiproteomic and biochemical approaches, we show that the membrane-anchored inner membrane space (IMS) protein AIFM1 serves as a mitochondrial stress-responsive substrate of OMA1. We define that OMA1 cleaves AIFM1 in the IMS under stress conditions, which is a kinetically slower reaction than that of the conventional substrate, the dynamin-like GTPase OPA1. Membrane dislocation of cleaved AIFM1 in mitochondria reduces its binding to subunits of the oxidative phosphorylation machinery. This leads to a decrease in the respiratory activity and ultimately impairs cell growth. Mechanistically, we show that AIFM1 broadly safeguards the mitochondrial proteome at steady state by participating in the protein import, in particular respiratory complex I subunits, via the Tim23 complex. These results reveal an unrecognized role for OMA1 in integrating mitochondrial stress sensing and cellular energetics by altering the topology of AIFM1.The internal identifier was: m4m1hgAENCThe repository contains AIFM1 wildtype and KO TREx cells (samples 1-8), which were not used in the associated publication. The file names contain pp for +/+ and mm for -/-.File names 09-12 (file names: R98ENLYFG) correspond to TCS. The file names 13-16 (M1_R98del) correspond to TCS/TEV.Raw fileSample Name01_AIFM1_KO_pp_fyxK.rawFlp-In-T REx-293-mock#102_AIFM1_KO_pp_wxP9.rawFlp-In-T REx-293-mock#203_AIFM1_KO_pp_Djpr.rawFlp-In-T REx-293-mock#304_AIFM1_KO_pp_txOk.rawFlp-In-T REx-293-mock#405_AIFM1_KO_mm_moaT.rawFlp-In-T REx-293 AIFM1 KO-mock#106_AIFM1_KO_mm_W5lK.rawFlp-In-T REx-293 AIFM1 KO-mock#207_AIFM1_KO_mm_XIc0.rawFlp-In-T REx-293 AIFM1 KO-mock#308_AIFM1_KO_mm_pdxt.rawFlp-In-T REx-293 AIFM1 KO-mock#409_AIFM1_C_MycAIFM1_R98ENLYFG_I2x8.rawFlp-In-T REx-293 AIFM1 KO-AIFM1TCS#110_AIFM1_C_MycAIFM1_R98ENLYFG_Hzqq.rawFlp-In-T REx-293 AIFM1 KO-AIFM1TCS#211_AIFM1_C_MycAIFM1_R98ENLYFG_4P4M.rawFlp-In-T REx-293 AIFM1 KO-AIFM1TCS#312_AIFM1_C_MycAIFM1_R98ENLYFG_MktX.rawFlp-In-T REx-293 AIFM1 KO-AIFM1TCS#413_AIFM1_C_MycAIFM1_M1_R98del_7NiF.rawFlp-In-T REx-293 AIFM1 KO-AIFM1TCS/TEV#114_AIFM1_C_MycAIFM1_M1_R98del_yf68.rawFlp-In-T REx-293 AIFM1 KO-AIFM1TCS/TEV#215_AIFM1_C_MycAIFM1_M1_R98del_hmKM.rawFlp-In-T REx-293 AIFM1 KO-AIFM1TCS/TEV#316_AIFM1_C_MycAIFM1_M1_R98del_qXgO.rawFlp-In-T REx-293 AIFM1 KO-AIFM1TCS/TEV#4