Summary of Study ST001730
This data is available at the NIH Common Fund's National Metabolomics Data Repository (NMDR) website, the Metabolomics Workbench, https://www.metabolomicsworkbench.org, where it has been assigned Project ID PR001108. The data can be accessed directly via it's Project DOI: 10.21228/M8GM5B This work is supported by NIH grant, U2C- DK119886.
See: https://www.metabolomicsworkbench.org/about/howtocite.php
This study contains a large results data set and is not available in the mwTab file. It is only available for download via FTP as data file(s) here.
Study ID | ST001730 |
Study Title | Mitochondrial ATP fuels ABC transporter-mediated drug efflux in cancer chemoresistance |
Study Summary | Chemotherapy remains the standard of care for most cancers worldwide, however development of chemoresistance due to the presence of the drug-effluxing ABC transporters remains a significant problem. The development of safe and effective means to overcome chemoresistance is critical for achieving durable remissions in many cancer patients. We have investigated the energetic demands of ABC transporters in the context of the metabolic adaptations of chemoresistant cancer cells. Here we show that ABC transporters use mitochondrial-derived ATP as a source of energy to efflux drugs out of cancer cells. We further demonstrate that the loss of MCJ (DnaJC15), an endogenous negative regulator of mitochondrial respiration, in chemoresistant cancer cells boosts their ability to produce ATP from mitochondria and fuel ABC transporters. We have developed novel MCJ mimetics that can attenuate mitochondrial respiration and safely overcome chemoresistance in vitro and in vivo. Administration of MCJ mimetics in combination with standard chemotherapeutic drugs could therefore become an new strategy for treatment of multiple cancers. |
Institute | University of Colorado Denver |
Department | Biochemistry and Molecular Genetics |
Laboratory | Angelo D'Alessandro |
Last Name | Culp-Hill |
First Name | Rachel |
Address | 12801 E 17th Ave L18-9403D, Aurora, Colorado, 80045, USA |
rachel.hill@cuanschutz.edu | |
Phone | 303-724-5798 |
Submit Date | 2021-03-17 |
Raw Data Available | Yes |
Raw Data File Type(s) | raw(Thermo) |
Analysis Type Detail | LC-MS |
Release Date | 2021-03-31 |
Release Version | 1 |
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Sample Preparation:
Sampleprep ID: | SP001813 |
Sampleprep Summary: | All cancer cell lines were maintained in RPMI 1640 (Sigma R8758) containing glucose (2 mg/ml) and glutamine (0.6 mg/ml) but no pyruvate and was supplemented with 5% Fetal calf serum. Metabolic profile comparisons of OVCAR-8 and NCI/ADR-RES cells were performed on equal cell numbers. Cells were cultured under normal conditions, detached using trypsin-EDTA (0.05 %), counted, normalized to 0.5 x 10e6 in each sample, and cell pellets were snap frozen in liquid nitrogen prior to analysis. Briefly, 2 x 10e6 cells and 20μL cell media were extracted in 1mL and 980μL cold lysis and extraction buffer (methanol : acetonitrile : water, 5:3:2), respectively, and pellets were discarded. |