MicroRNAs (miRNAs), approximately 22-nucleotide non-coding RNA molecules, regulate a variety of pivotal physiological or pathological processes, including embryonic development and tumorigenesis. To obtain comprehensive expression profiles of miRNAs in human embryos, we characterized miRNA expression in weeks 4-6 of human embryonic development using miRNA microarrays and identified 50 human-embryo-specific miRNAs (HES-miRNAs). Furthermore, we selected three non-conserved or primate-specific miRNAs, hsa-miR-638, -720, and -1280, and examined their expression levels in various normal and tumor tissues. The results show that expression of most miRNAs is extremely low during early human embryonic development. In addition, the expression of some non-conserved or primate-specific miRNAs is significantly different between tumor and the corresponding normal tissue samples, suggesting that the miRNAs are closely related to the pathological processes of various tumors. This study presents the first comprehensive overview of miRNA expression during human embryonic development and offers immediate evidence of the relationship between human early embryonic development and tumorigenesis.
ABSTRACT
PUBLICATION RECORD
- Publication year
2013
- Venue
PLoS ONE
- Publication date
2013-08-02
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- hsa-mir-1280
A human miRNA examined for expression differences across normal and tumor tissues.
Aliases: miR-1280
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - hsa-mir-638
A human miRNA examined for expression differences across normal and tumor tissues.
Aliases: miR-638
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - hsa-mir-720
A human miRNA examined for expression differences across normal and tumor tissues.
Aliases: miR-720
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - human-embryo-specific mirnas
A set of miRNAs identified as specific to human embryo samples in this expression survey.
Aliases: HES-miRNAs
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - mirna microarrays
A microarray-based assay used here to measure miRNA expression across embryonic samples.
Aliases: microRNA microarrays
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - normal and tumor tissues
Matched healthy and cancerous tissue samples used to compare miRNA expression levels.
Aliases: normal tissue samples and tumor tissue samples
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - tumorigenesis
The cancer-related pathological process discussed in relation to altered miRNA expression.
Aliases: cancer development
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review - weeks 4-6 of human embryonic development
The early embryonic stage examined for miRNA expression profiling in human samples.
Aliases: human embryonic weeks 4-6, early human embryonic development
박진우 (dztg5apj7m) extraction뀨 (7c402c1b98) reviewKiller Whale (322360f1c1) reviewB (s683577b42) review
REFERENCES
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