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Osteoblastogenesis Alters Small RNA Profiles in EVs Derived from Bone Marrow Stem Cells (BMSCs) and Adipose Stem

Yan Yan1,2, Clare Chang1, Junyi Su1

  • 1Interdisciplinary Nanoscience Center, Aarhus University, 8000 Aarhus, Denmark.

Biomedicines
|October 1, 2020
PubMed

Insights

Multipotent stem cells (MSCs) release distinct small non-coding RNAs in extracellular vesicles (EVs) during osteoblastogenesis. This finding is crucial for optimizing stem cell therapy, as MSC origin impacts EV small RNA profiles.

Area of Science:

  • Stem cell biology
  • Molecular biology
  • Biochemistry

Background:

  • Multipotent stem cells (MSCs) are utilized in regenerative medicine due to their paracrine signaling.
  • Extracellular vesicles (EVs) mediate paracrine effects, carrying bioactive molecules like small non-coding RNAs.
  • Osteoblastogenesis, the process of bone formation, involves complex molecular signaling.

Purpose of the Study:

  • To identify and characterize small non-coding RNAs within EVs secreted by MSCs during osteoblastogenesis.
  • To compare the small RNA cargo of EVs from bone marrow stem cells (BMSCs) and adipose stem cells (ASCs) before and after osteoblastic differentiation.
  • To investigate how MSC origin influences EV small RNA profiles during osteogenesis.

Main Methods:

  • Isolation of EVs from human BMSCs and ASCs.
  • Induction of osteoblastic differentiation in MSC cultures.
  • Small RNA sequencing of EVs and parental MSCs.
  • Comparative analysis of small RNA expression profiles.

Main Results:

  • EVs contain a specific subset of microRNAs (miRNAs) and tRNA-derived small RNAs (tsRNAs) distinct from parental cells.
  • Osteoblastic differentiation significantly altered the small RNA profile of BMSC-derived EVs compared to ASC-derived EVs.
  • Distinct small RNA expression patterns were observed in EVs from different MSC sources during osteogenesis.

Conclusions:

  • MSC-derived EVs exhibit unique small RNA signatures during osteoblastogenesis.
  • The origin of MSCs influences the composition of small RNAs within their secreted EVs.
  • These findings highlight the importance of considering MSC source when developing EV-based therapeutic strategies for bone regeneration.
Keywords:
adipose stem cellsbone marrow stem cellextracellular vesiclesmicroRNAmultipotent stem cellosteoblastogenesistRNA-derived small RNA

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