Abstract
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Journal of Clinical Investigation |
| Vol/bind | 120 |
| Udgave nummer | 4 |
| Sider (fra-til) | 1298-309 |
| Antal sider | 11 |
| ISSN | 0021-9738 |
| DOI | |
| Status | Udgivet - 2010 |
Bibliografisk note
Keywords: Animals; Computational Biology; Humans; Lung Neoplasms; Mice; MicroRNAs; Oligonucleotide Array Sequence Analysis; Protein Phosphatase 2; Protein-Serine-Threonine Kinases; Reverse Transcriptase Polymerase Chain Reaction; Tumor Suppressor ProteinsCitationsformater
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I: Journal of Clinical Investigation, Bind 120, Nr. 4, 2010, s. 1298-309.
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review
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TY - JOUR
T1 - MicroRNA-31 functions as an oncogenic microRNA in mouse and human lung cancer cells by repressing specific tumor suppressors
AU - Liu, Xi
AU - Sempere, Lorenzo F
AU - Ouyang, Haoxu
AU - Memoli, Vincent A
AU - Andrew, Angeline S
AU - Luo, Yue
AU - Demidenko, Eugene
AU - Korc, Murray
AU - Shi, Wei
AU - Preis, Meir
AU - Dragnev, Konstantin H
AU - Li, Hua
AU - Direnzo, James
AU - Bak, Mads
AU - Freemantle, Sarah J
AU - Kauppinen, Sakari
AU - Dmitrovsky, Ethan
N1 - Keywords: Animals; Computational Biology; Humans; Lung Neoplasms; Mice; MicroRNAs; Oligonucleotide Array Sequence Analysis; Protein Phosphatase 2; Protein-Serine-Threonine Kinases; Reverse Transcriptase Polymerase Chain Reaction; Tumor Suppressor Proteins
PY - 2010
Y1 - 2010
N2 - MicroRNAs (miRNAs) regulate gene expression. It has been suggested that obtaining miRNA expression profiles can improve classification, diagnostic, and prognostic information in oncology. Here, we sought to comprehensively identify the miRNAs that are overexpressed in lung cancer by conducting miRNA microarray expression profiling on normal lung versus adjacent lung cancers from transgenic mice. We found that miR-136, miR-376a, and miR-31 were each prominently overexpressed in murine lung cancers. Real-time RT-PCR and in situ hybridization (ISH) assays confirmed these miRNA expression profiles in paired normal-malignant lung tissues from mice and humans. Engineered knockdown of miR-31, but not other highlighted miRNAs, substantially repressed lung cancer cell growth and tumorigenicity in a dose-dependent manner. Using a bioinformatics approach, we identified miR-31 target mRNAs and independently confirmed them as direct targets in human and mouse lung cancer cell lines. These targets included the tumor-suppressive genes large tumor suppressor 2 (LATS2) and PP2A regulatory subunit B alpha isoform (PPP2R2A), and expression of each was augmented by miR-31 knockdown. Their engineered repression antagonized miR-31-mediated growth inhibition. Notably, miR-31 and these target mRNAs were inversely expressed in mouse and human lung cancers, underscoring their biologic relevance. The clinical relevance of miR-31 expression was further independently and comprehensively validated using an array containing normal and malignant human lung tissues. Together, these findings revealed that miR-31 acts as an oncogenic miRNA (oncomir) in lung cancer by targeting specific tumor suppressors for repression.
AB - MicroRNAs (miRNAs) regulate gene expression. It has been suggested that obtaining miRNA expression profiles can improve classification, diagnostic, and prognostic information in oncology. Here, we sought to comprehensively identify the miRNAs that are overexpressed in lung cancer by conducting miRNA microarray expression profiling on normal lung versus adjacent lung cancers from transgenic mice. We found that miR-136, miR-376a, and miR-31 were each prominently overexpressed in murine lung cancers. Real-time RT-PCR and in situ hybridization (ISH) assays confirmed these miRNA expression profiles in paired normal-malignant lung tissues from mice and humans. Engineered knockdown of miR-31, but not other highlighted miRNAs, substantially repressed lung cancer cell growth and tumorigenicity in a dose-dependent manner. Using a bioinformatics approach, we identified miR-31 target mRNAs and independently confirmed them as direct targets in human and mouse lung cancer cell lines. These targets included the tumor-suppressive genes large tumor suppressor 2 (LATS2) and PP2A regulatory subunit B alpha isoform (PPP2R2A), and expression of each was augmented by miR-31 knockdown. Their engineered repression antagonized miR-31-mediated growth inhibition. Notably, miR-31 and these target mRNAs were inversely expressed in mouse and human lung cancers, underscoring their biologic relevance. The clinical relevance of miR-31 expression was further independently and comprehensively validated using an array containing normal and malignant human lung tissues. Together, these findings revealed that miR-31 acts as an oncogenic miRNA (oncomir) in lung cancer by targeting specific tumor suppressors for repression.
U2 - 10.1172/JCI39566
DO - 10.1172/JCI39566
M3 - Journal article
C2 - 20237410
SN - 0021-9738
VL - 120
SP - 1298
EP - 1309
JO - Journal of Clinical Investigation
JF - Journal of Clinical Investigation
IS - 4
ER -