Pathway signature and cellular differentiation in clear cell renal cell carcinoma

Han W Tun, Laura A. Marlow, Christina A. von Roemeling, Simon J. Cooper, Pamela Kreinest, Kevin Wu, Bruce A. Luxon, Mala Sinha, Panagiotis Z Anastasiadis, John A III Copland

Research output: Contribution to journalArticle

103 Citations (Scopus)

Abstract

Background: Clear cell renal cell carcinoma (ccRCC) is the most common kidney cancer. The purpose of this study is to define a biological pathway signature and a cellular differentiation program in ccRCC. Methodology: We performed gene expression profiling of early-stage ccRCC and patient-matched normal renal tissue using Affymetrix HG-U133a and HG-U133b GeneChips combined with a comprehensive bioinformatic analyses, including pathway analysis. The results were validated by real time PCR and IHC on two independent sample sets. Cellular differentiation experiments were performed on ccRCC cell lines and their matched normal renal epithelial cells, in differentiation media, to determine their mesenchymal differentiation potential. Principal Findings: We identified a unique pathway signature with three major biological alterations-loss of normal renal function, down-regulated metabolism, and immune activation-which revealed an adipogenic gene expression signature linked to the hallmark lipid-laden clear cell morphology of ccRCC. Culturing normal renal and ccRCC cells in differentiation media showed that only ccRCC cells were induced to undergo adipogenic and, surprisingly, osteogenic differentiation. A gene expression signature consistent with epithelial mesenchymal transition (EMT) was identified for ccRCC. We revealed significant down-regulation of four developmental transcription factors (GATA3, TFCP2L1, TFAP2B, DMRT2) that are important for normal renal development. Conclusions: ccRCC is characterized by a lack of epithelial differentiation, mesenchymal/adipogenic transdifferentiation, and pluripotent mesenchymal stem cell-like differentiation capacity in vitro. We suggest that down-regulation of developmental transcription factors may mediate the aberrant differentiation in ccRCC. We propose a model in which normal renal epithelial cells undergo dedifferentiation, EMT, and adipogenic transdifferentiation, resulting in ccRCC. Because ccRCC cells grown in adipogenic media regain the characteristic ccRCC phenotype, we have indentified a new in vitro ccRCC cell model more resembling ccRCC tumor morphology.

Original languageEnglish (US)
Article numbere10696
JournalPLoS One
Volume5
Issue number5
DOIs
StatePublished - 2010

Fingerprint

kidney cells
Renal Cell Carcinoma
Gene expression
carcinoma
Cells
GATA3 Transcription Factor
Regain
cells
Bioinformatics
Stem cells
Metabolism
Tumors
Transcription Factors
Kidney
Chemical activation
Tissue
Lipids
Cell Differentiation
Epithelial-Mesenchymal Transition
Transcriptome

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Pathway signature and cellular differentiation in clear cell renal cell carcinoma. / Tun, Han W; Marlow, Laura A.; von Roemeling, Christina A.; Cooper, Simon J.; Kreinest, Pamela; Wu, Kevin; Luxon, Bruce A.; Sinha, Mala; Anastasiadis, Panagiotis Z; Copland, John A III.

In: PLoS One, Vol. 5, No. 5, e10696, 2010.

Research output: Contribution to journalArticle

Tun, HW, Marlow, LA, von Roemeling, CA, Cooper, SJ, Kreinest, P, Wu, K, Luxon, BA, Sinha, M, Anastasiadis, PZ & Copland, JAIII 2010, 'Pathway signature and cellular differentiation in clear cell renal cell carcinoma', PLoS One, vol. 5, no. 5, e10696. https://doi.org/10.1371/journal.pone.0010696
Tun, Han W ; Marlow, Laura A. ; von Roemeling, Christina A. ; Cooper, Simon J. ; Kreinest, Pamela ; Wu, Kevin ; Luxon, Bruce A. ; Sinha, Mala ; Anastasiadis, Panagiotis Z ; Copland, John A III. / Pathway signature and cellular differentiation in clear cell renal cell carcinoma. In: PLoS One. 2010 ; Vol. 5, No. 5.
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abstract = "Background: Clear cell renal cell carcinoma (ccRCC) is the most common kidney cancer. The purpose of this study is to define a biological pathway signature and a cellular differentiation program in ccRCC. Methodology: We performed gene expression profiling of early-stage ccRCC and patient-matched normal renal tissue using Affymetrix HG-U133a and HG-U133b GeneChips combined with a comprehensive bioinformatic analyses, including pathway analysis. The results were validated by real time PCR and IHC on two independent sample sets. Cellular differentiation experiments were performed on ccRCC cell lines and their matched normal renal epithelial cells, in differentiation media, to determine their mesenchymal differentiation potential. Principal Findings: We identified a unique pathway signature with three major biological alterations-loss of normal renal function, down-regulated metabolism, and immune activation-which revealed an adipogenic gene expression signature linked to the hallmark lipid-laden clear cell morphology of ccRCC. Culturing normal renal and ccRCC cells in differentiation media showed that only ccRCC cells were induced to undergo adipogenic and, surprisingly, osteogenic differentiation. A gene expression signature consistent with epithelial mesenchymal transition (EMT) was identified for ccRCC. We revealed significant down-regulation of four developmental transcription factors (GATA3, TFCP2L1, TFAP2B, DMRT2) that are important for normal renal development. Conclusions: ccRCC is characterized by a lack of epithelial differentiation, mesenchymal/adipogenic transdifferentiation, and pluripotent mesenchymal stem cell-like differentiation capacity in vitro. We suggest that down-regulation of developmental transcription factors may mediate the aberrant differentiation in ccRCC. We propose a model in which normal renal epithelial cells undergo dedifferentiation, EMT, and adipogenic transdifferentiation, resulting in ccRCC. Because ccRCC cells grown in adipogenic media regain the characteristic ccRCC phenotype, we have indentified a new in vitro ccRCC cell model more resembling ccRCC tumor morphology.",
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AU - Marlow, Laura A.

AU - von Roemeling, Christina A.

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AU - Wu, Kevin

AU - Luxon, Bruce A.

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AB - Background: Clear cell renal cell carcinoma (ccRCC) is the most common kidney cancer. The purpose of this study is to define a biological pathway signature and a cellular differentiation program in ccRCC. Methodology: We performed gene expression profiling of early-stage ccRCC and patient-matched normal renal tissue using Affymetrix HG-U133a and HG-U133b GeneChips combined with a comprehensive bioinformatic analyses, including pathway analysis. The results were validated by real time PCR and IHC on two independent sample sets. Cellular differentiation experiments were performed on ccRCC cell lines and their matched normal renal epithelial cells, in differentiation media, to determine their mesenchymal differentiation potential. Principal Findings: We identified a unique pathway signature with three major biological alterations-loss of normal renal function, down-regulated metabolism, and immune activation-which revealed an adipogenic gene expression signature linked to the hallmark lipid-laden clear cell morphology of ccRCC. Culturing normal renal and ccRCC cells in differentiation media showed that only ccRCC cells were induced to undergo adipogenic and, surprisingly, osteogenic differentiation. A gene expression signature consistent with epithelial mesenchymal transition (EMT) was identified for ccRCC. We revealed significant down-regulation of four developmental transcription factors (GATA3, TFCP2L1, TFAP2B, DMRT2) that are important for normal renal development. Conclusions: ccRCC is characterized by a lack of epithelial differentiation, mesenchymal/adipogenic transdifferentiation, and pluripotent mesenchymal stem cell-like differentiation capacity in vitro. We suggest that down-regulation of developmental transcription factors may mediate the aberrant differentiation in ccRCC. We propose a model in which normal renal epithelial cells undergo dedifferentiation, EMT, and adipogenic transdifferentiation, resulting in ccRCC. Because ccRCC cells grown in adipogenic media regain the characteristic ccRCC phenotype, we have indentified a new in vitro ccRCC cell model more resembling ccRCC tumor morphology.

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