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Nanoparticle-mediated intracellular lipid accumulation during C2C12 cell differentiation
Tamotsu Tsukahara1, Hisao Haniu
1Department of Integrative Physiology and Bio-System Control, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan. ttamotsu@shinshu-u.ac.jp
Biochemical and Biophysical Research Communications
|March 1, 2011
Summary
Multiwall carbon nanotubes (CNTs) exposure redirected C2C12 skeletal muscle cells towards an adipose lineage. This finding suggests CNTs can alter cell differentiation pathways, impacting tissue development and potentially metabolic processes.
Area of Science:
- Biotechnology
- Cell Biology
- Materials Science
Background:
- Skeletal muscle constitutes a significant portion of body mass and energy expenditure.
- Understanding cellular responses to nanomaterials is crucial for safety and application.
- The C2C12 cell line is a well-established model for skeletal muscle differentiation.
Purpose of the Study:
- To investigate the effect of multiwall carbon nanotubes (CNTs) on C2C12 skeletal muscle cell proliferation and differentiation.
- To determine if CNT exposure influences the normal differentiation pathway of myoblasts.
- To explore the potential for CNTs to induce alternative cell fates.
Main Methods:
- Exposure of C2C12 myoblasts to vapor-grown carbon fiber HTT2800 (a purified CNT).
- Assessment of intracellular lipid accumulation.
- Quantitative PCR (qPCR) analysis of gene expression related to adipose differentiation.
Main Results:
- HTT2800 exposure stimulated intracellular lipid accumulation in C2C12 cells.
- Adipose-related gene expression was significantly upregulated following HTT2800 treatment.
- The differentiation pathway of C2C12 myoblasts was converted to an adipoblast-like phenotype.
Conclusions:
- Multiwall carbon nanotubes (CNTs) can specifically alter the differentiation trajectory of skeletal muscle cells.
- CNTs promote an adipose differentiation program in C2C12 cells, overriding their myogenic fate.
- These findings highlight the potent biological effects of CNTs on cell differentiation.
