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Updated: Feb 14, 2026
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Isolation and Differentiation of Adipose-Derived Stem Cells from Porcine Subcutaneous Adipose Tissues
Published on: March 31, 2016
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Mirna biogenesis pathway is differentially regulated during adipose derived stromal/stem cell differentiation
E C Martin1, A T Qureshi2, C B Llamas3
1a Department for Biological and Agricultural Engineering , Louisiana State University , Baton Rouge , LA.
Adipocyte
|February 8, 2018
Summary
Stem cell differentiation involves changes in microRNA (miRNA) processing. This study reveals altered miRNA strand preference and expression of miRNA biogenesis genes during adipogenesis and osteogenesis in adipose-derived stromal/stem cells.
Area of Science:
- Molecular Biology
- Stem Cell Biology
- Epigenetics
Background:
- Stromal/stem cell differentiation is regulated by complex mechanisms, including mRNA gene regulation.
- MicroRNAs (miRNAs) are key posttranscriptional regulators of stem cell differentiation, inhibiting mRNA translation.
- While miRNA expression increases during adipogenesis and osteogenesis, the underlying mechanisms are not fully understood.
Purpose of the Study:
- To investigate alterations in miRNA processing and biogenesis during adipose-derived stromal/stem cell (ASC) differentiation.
- To identify changes in miRNA strand preference and 5' seed site heterogeneity during adipogenic and osteogenic lineages.
- To examine the expression of genes involved in miRNA biogenesis pathway during ASC differentiation.
Main Methods:
- Induction of ASCs towards adipogenic and osteogenic lineages.
- Analysis of miRNA strand preference (-3p and -5p) and 5' seed site heterogeneity.
- Quantitative RT-PCR to assess the expression of miRNA biogenesis genes, including Argonautes (AGO1-4), Drosha, and Dicer.
Main Results:
- ASCs undergoing adipogenic or osteogenic differentiation exhibit differential miRNA strand preference from the same primary transcript.
- Alterations in miRNA strand preference and 5' seed site heterogeneity were observed in differentiating ASCs.
- Expression of key miRNA biogenesis genes (AGO1-4, Drosha, Dicer) changed during differentiation; osteogenesis increased AGO1-4, while adipogenesis decreased AGO1.
Conclusions:
- Stromal/stem cell differentiation is associated with significant changes in the miRNA biogenesis pathway.
- Altered miRNA processing, including strand preference and biogenesis gene expression, plays a role in ASC lineage commitment.
- Understanding these regulatory mechanisms could enable novel strategies for manipulating stem cell differentiation globally via miRNA regulation.
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