Journal
CANCER MEDICINE
Volume 8, Issue 4, Pages 1641-1651Publisher
WILEY
DOI: 10.1002/cam4.2004
Keywords
cetuximab; colorectal cancer; lncRNA; mRNA; RNA-Seq
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Funding
- Jiangsu Provincial key research development program [BE2016795]
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To gain an insight into the molecular mechanisms of cetuximab resistance in colorectal cancer, we generated a cetuximab-resistant cell line (H508/ CR) and performed RNA sequencing to identify the differential expression patterns of noncoding RNAs ( ncRNAs) and mRNAs between cetuximab-sensitive and resistant cells. A total of 278 ncRNA transcripts and 1,059 mRNA transcripts were dysregulated in the cetuximab- resistant cells. The expression levels of nine selected long noncoding RNAs ( lncRNAs) were validated using quantitative real-time PCR. Functional analysis revealed that several groups of lncRNAs might be involved in pathways associated with cetuximab resistance. Increased glucose consumption and lactate secretion in cetuximab-resistant cells suggested that glucose metabolism might be involved in cetuximab resistance. In addition, lncRNA LINC00973 was upregulated in the H508/ CR cell line and cells transfected with a LINC00973 short interfering RNA exhibited reduced cell viability, increased apoptosis, and decreased glucose consumption and lactate secretion. Our results provide essential data regarding differentially expressed lncRNAs and mRNAs in cetuximab-resistant cells, which may provide new potential candidates for cetuximab therapy.
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