title: Distinct Profiles for Mitochondrial t-RNAs and Small Nucleolar RNAs in Locally Invasive and Metastatic Colorectal Cancer.
abstract: OBJECTIVE
  To gain insight into factors involved in tumor progression and metastasis, we examined the role of noncoding RNAs in the biologic characteristics of colorectal carcinoma, in paired samples of tumor together with normal mucosa from the same colorectal carcinoma patient. The tumor and healthy tissue samples were collected and stored under stringent conditions, thereby minimizing warm ischemic time.
  
  
  METHODS
  We focused particularly on distinctions among high-stage tumors and tumors with known metastases, performing RNA-Seq analysis that quantifies transcript abundance and identifies novel transcripts.
  
  
  RESULTS
  In comparing 35 colorectal carcinomas, including 9 metastatic tumors (metastases to lymph nodes and lymphatic vessels), with their matched healthy control mucosa, we found a distinct signature of mitochondrial transfer RNAs (MT-tRNA) and small nucleolar RNAs (snoRNA) for metastatic and high-stage colorectal carcinoma. We also found the following: (i) MT-TF (phenylalanine) and snord12B expression correlated with a substantial number of miRNAs and mRNAs in 14 colorectal carcinomas examined; (ii) an miRNA signature of oxidative stress, hypoxia, and a shift to glycolytic metabolism in 14 colorectal carcinomas, regardless of grade and stage; and (iii) heterogeneous MT-tRNA/snoRNA fingerprints for 35 pairs.
  
  
  CONCLUSIONS
  These findings could potentially assist in more accurate and predictive staging of colorectal carcinoma, including identification of those colorectal carcinomas likely to metastasize.
authors.affiliation: OBP/DBRR-III, CDER, FDA, Silver Spring, Maryland.
authors.forename: Lai
authors.initials: L
authors.lastname: Xu
authors.affiliation: HIV/AIDS Malignancy Branch, NCI, Bethesda, Maryland.
authors.forename: Joseph
authors.initials: J
authors.lastname: Ziegelbauer
authors.affiliation: OBP/DBRR-III, CDER, FDA, Silver Spring, Maryland.
authors.forename: Rong
authors.initials: R
authors.lastname: Wang
authors.affiliation: Facility for Biotechnology Resources, CBER, FDA, Silver Spring, Maryland.
authors.forename: Wells W
authors.initials: WW
authors.lastname: Wu
authors.affiliation: Facility for Biotechnology Resources, CBER, FDA, Silver Spring, Maryland.
authors.forename: Rong-Fong
authors.initials: RF
authors.lastname: Shen
authors.affiliation: Indivumed GMBH, Hamburg, Germany.
authors.forename: Hartmut
authors.initials: H
authors.lastname: Juhl
authors.affiliation: OBP/DBRR-III, CDER, FDA, Silver Spring, Maryland.
authors.forename: Yaqin
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: OBP/DBRR-III, CDER, FDA, Silver Spring, Maryland. amy.rosenberg@fda.hhs.gov.
authors.forename: Amy
authors.initials: A
authors.lastname: Rosenberg
mesh_terms: D014408:Biomarkers, Tumor; D016022:Case-Control Studies; D016000:Cluster Analysis; D015179:Colorectal Neoplasms / Q000235:genetics* / Q000378:metabolism / Q000473:pathology*; D020869:Gene Expression Profiling; D015972:Gene Expression Regulation, Neoplastic; D053263:Gene Regulatory Networks; D005947:Glucose / Q000378:metabolism; D006801:Humans; D000860:Hypoxia / Q000235:genetics / Q000378:metabolism; D008198:Lymph Nodes / Q000473:pathology; D035683:MicroRNAs / Q000235:genetics; D060787:Neoplasm Grading; D009362:Neoplasm Metastasis; D009367:Neoplasm Staging; D012313:RNA; D000077278:RNA, Mitochondrial; D020537:RNA, Small Nucleolar; D012343:RNA, Transfer
chemical_list: D014408:Biomarkers, Tumor; D035683:MicroRNAs; D000077278:RNA, Mitochondrial; D020537:RNA, Small Nucleolar; D012313:RNA; D012343:RNA, Transfer; D005947:Glucose