Basic Information
RNALocate ID: RLID:11005406
RNA Symbol: hsa-miR-125
Localization: Exosome
RNA Information
RNA Name: hsa-miR-125
RNA Category: miRNA
Species: Homo sapiens
Localization Information
PubMed ID: 20615901
Tissue/Cell Line: Lung epithelial carcinoma cell line (A549)
Method: Microarray|RT-PCR

Originally published in Nucleic Acids Res. Wang K, et al, 2010. Reproduced under the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/)

Description: These observations of miRNA distribution demonstrate that the miRNA export system in the cells must somehow be able to target specific miRNAs to specific extracellular structures, but does not exclusively channel specific miRNAs to a given fraction. There are, however, some miRNAs that are found in the supernatant almost to the exclusion of all other fractions (miR-219 in A549 culture medium, Figure 4b, for example). Another significant observation from this data is that even though we showed that the two cell lines studied here export a similar spectrum of miRNAs (Figure 1b) the distributions of miRNAs from the two cell lines demonstrate clear differences, as shown in Figure 4b and c. For example, miR-145 is present at very low levels in HepG2 derived microvesicles (Figure 4c), while the same miRNA is present at significant levels in both A549 derived microvesicles and exosomes (Figure 4b). On the other hand, there are some miRNAs, notably those that are almost uniformly distributed among the fractions, with the same distribution no matter which cell-line is the source. These observations certainly indicate the degree of complexity of this export system that will bear further investigation. Data are collected from Figure 4.
Other Subcellular Localization
RNALocate ID Localization Tissue/Cell line PubMed ID
RLID:11005558 Microvesicle Lung epithelial carcinoma cell line (A549) 20615901
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