Gene and protein expression profiling during differentiation of neuroblastoma cells triggered by 13-cis retinoic acid
Yuki Yuza1, Miyuki Agawa, Masaharu Matsuzaki
1Department of Pediatrics, Jikei University School of Medicine, Tokyo, Japan.
Purpose:
The precise changes in RNA and protein expression that accompany neuroblastoma differentiation remain unknown. The authors used microarray technologies to screen molecules associated with the differentiation of neuroblastoma (NB) cells induced by 13-cis retinoic acid.
Methods:
The authors quantified the expression of 2,061 RNA transcripts related to oncogenesis and of 380 proteins expressed in SK-N-SH and CHP-134 NB cell lines in the presence or absence of 13-cis retinoic acid.
Results:
Hierarchical clustering captured gene expression altered during neuroblastoma differentiation induced by 13-cis retinoic acid. Several genes were further abstracted based on P values below 0.0017 or protein chips observed in both NB cell lines. The altered expressions of gene products revealed by both DNA and protein chips were in agreement. The expressions of N-myc, cyclin D3, and Wnt10B were downregulated, whereas those of retinoblastoma (RB) and related genes (p107, RB2/p130, p300/CBP, E2F-1, DP-1) as well as others were upregulated.
Conclusions:
These results suggest that microarray technology can screen for genes that are important in neuroblastoma differentiation.
Insights
Microarray analysis revealed key molecular changes during neuroblastoma (NB) cell differentiation induced by 13-cis retinoic acid. This technology effectively screens for genes critical to NB differentiation.
Area of Science:
- Oncology
- Molecular Biology
- Genomics
Background:
- Neuroblastoma (NB) differentiation is a complex process with incompletely understood molecular underpinnings.
- Identifying specific RNA and protein expression changes is crucial for understanding NB cell fate.
- 13-cis retinoic acid is a known inducer of NB differentiation.
Purpose of the Study:
- To identify precise RNA and protein expression changes accompanying neuroblastoma differentiation.
- To screen molecules associated with 13-cis retinoic acid-induced NB cell differentiation using microarray technology.
Main Methods:
- Quantification of 2,061 RNA transcripts and 380 proteins in two NB cell lines (SK-N-SH and CHP-134).
- Comparison of gene and protein expression in the presence and absence of 13-cis retinoic acid.
- Application of hierarchical clustering to analyze gene expression alterations.
Main Results:
- Hierarchical clustering identified gene expression patterns associated with NB differentiation.
- Downregulation of N-myc, cyclin D3, and Wnt10B observed.
- Upregulation of retinoblastoma (RB) family genes (p107, RB2/p130, p300/CBP, E2F-1, DP-1) and others confirmed by both DNA and protein arrays.
Conclusions:
- Microarray technology is effective for screening genes involved in neuroblastoma differentiation.
- The study identified specific molecular players in retinoic acid-induced NB differentiation.
