Journal
MOLECULAR CANCER RESEARCH
Volume 13, Issue 7, Pages 1119-1129Publisher
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/1541-7786.MCR-14-0165-T
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- Canada Research Chairs Program
- Ontario Research Fund
- Canadian Institutes of Health Research
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Coiled-coil-helix-coiled-coil-helix-domain-containing 2, a mitochondrial protein, encoded by CHCHD2 is located at chromosome 7p11.2 and proximal to the EGFR gene. Here, bioinformatic analyses revealed that CHCHD2 is consistently coamplified with EGFR in non-small cell lung carcinoma (NSCLC). In addition, CHCHD2 and EGFR protein expression levels were positively correlated and upregulated relative to normal lung in NSCLC tumor-derived xenografts. Knockdown of CHCHD2 expression in NSCLC cells attenuated cell proliferation, migration, and mitochondrial respiration. CHCHD2 protein-protein interactions were assessed by the complementary approaches of affinity purification mass spectrometry and in vivo proximity ligation. The CHCHD2 interactome includes the apparent hub proteins C1QBP (a mitochondrial protein) and YBX1 (an oncogenic transcription factor), and an overlapping set of hub-associated proteins implicated in cell regulation. (C)2015 AACR.
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