The human mineral dust-induced gene, mdig, is a cell growth regulating gene associated with lung cancer

Yadong Zhang, Yongju Lu, Bao Zhu Yuan, Vince Castranova, Xianglin Shi, John L. Stauffer, Laurence Demers, Fei Chen

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

Environmental or occupational exposure to mineral dusts, mainly silica and asbestos, is associated with an increased incidence of lung inflammation, fibrosis, and/or cancer. To better understand the molecular events associated with these pulmonary diseases, we attempted to identify genes that are regulated by mineral dusts. Using a differential display reverse transcription polymerase chain reaction technique and mRNAs of alveolar macrophages from both normal individuals and coal miners, we identified a novel mineral dust-induced gene named mdig, which had not been fully characterized. The expression of mdig mRNA was detected in alveolar macrophages from coal miners but not from normal subjects. The inducible expression of mdig could be observed in A549 cells exposed to silica particles in a time-dependent manner. The full-length mdig mRNA was expressed in human lung cancer tissues but was barely detectable in the adjacent normal tissues. In addition, a number of lung cancer cell lines constitutively express mdig. Alternative spliced transcripts of mdig were detected in some lung cancer cell lines. Silencing mdig mRNA expression in A549 lung cancer cells by siRNA-mediated RNA interference inhibits cell proliferation and sensitizes the cells to silica-induced cytotoxicity. These results suggest that the mdig gene may be involved in the regulation of cell growth and possibly the development of cancer.

Original languageEnglish (US)
Pages (from-to)4873-4882
Number of pages10
JournalOncogene
Volume24
Issue number31
DOIs
StatePublished - Jul 21 2005

Fingerprint

Dust
Minerals
Lung Neoplasms
Silicon Dioxide
Growth
Messenger RNA
Coal
Genes
Alveolar Macrophages
Cell Line
Asbestos
Environmental Exposure
Occupational Exposure
RNA Interference
Growth and Development
Small Interfering RNA
Lung Diseases
Reverse Transcription
Pneumonia
Fibrosis

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics
  • Cancer Research

Cite this

Zhang, Y., Lu, Y., Yuan, B. Z., Castranova, V., Shi, X., Stauffer, J. L., ... Chen, F. (2005). The human mineral dust-induced gene, mdig, is a cell growth regulating gene associated with lung cancer. Oncogene, 24(31), 4873-4882. https://doi.org/10.1038/sj.onc.1208668
Zhang, Yadong ; Lu, Yongju ; Yuan, Bao Zhu ; Castranova, Vince ; Shi, Xianglin ; Stauffer, John L. ; Demers, Laurence ; Chen, Fei. / The human mineral dust-induced gene, mdig, is a cell growth regulating gene associated with lung cancer. In: Oncogene. 2005 ; Vol. 24, No. 31. pp. 4873-4882.
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abstract = "Environmental or occupational exposure to mineral dusts, mainly silica and asbestos, is associated with an increased incidence of lung inflammation, fibrosis, and/or cancer. To better understand the molecular events associated with these pulmonary diseases, we attempted to identify genes that are regulated by mineral dusts. Using a differential display reverse transcription polymerase chain reaction technique and mRNAs of alveolar macrophages from both normal individuals and coal miners, we identified a novel mineral dust-induced gene named mdig, which had not been fully characterized. The expression of mdig mRNA was detected in alveolar macrophages from coal miners but not from normal subjects. The inducible expression of mdig could be observed in A549 cells exposed to silica particles in a time-dependent manner. The full-length mdig mRNA was expressed in human lung cancer tissues but was barely detectable in the adjacent normal tissues. In addition, a number of lung cancer cell lines constitutively express mdig. Alternative spliced transcripts of mdig were detected in some lung cancer cell lines. Silencing mdig mRNA expression in A549 lung cancer cells by siRNA-mediated RNA interference inhibits cell proliferation and sensitizes the cells to silica-induced cytotoxicity. These results suggest that the mdig gene may be involved in the regulation of cell growth and possibly the development of cancer.",
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Zhang, Y, Lu, Y, Yuan, BZ, Castranova, V, Shi, X, Stauffer, JL, Demers, L & Chen, F 2005, 'The human mineral dust-induced gene, mdig, is a cell growth regulating gene associated with lung cancer', Oncogene, vol. 24, no. 31, pp. 4873-4882. https://doi.org/10.1038/sj.onc.1208668

The human mineral dust-induced gene, mdig, is a cell growth regulating gene associated with lung cancer. / Zhang, Yadong; Lu, Yongju; Yuan, Bao Zhu; Castranova, Vince; Shi, Xianglin; Stauffer, John L.; Demers, Laurence; Chen, Fei.

In: Oncogene, Vol. 24, No. 31, 21.07.2005, p. 4873-4882.

Research output: Contribution to journalArticle

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