p53 dysfunction by xeroderma pigmentosum group C defects enhance lung adenocarcinoma metastasis via increased Mmp1 expression

Yi Hui Wu, Tzu Chin Wu, Jiunn Wang Liao, Kun Tu Yeh, Chih Yi Chen, Huei Lee

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Xeroderma pigmentosum group C (XPC) interacts with hHR23B to recognize DNA damage in global genomic repair. We previously showed that XPC is predominantly affected by its hypermethylation and is associated with an increased occurrence of p53 mutation in lung cancer. Tumors with low XPC mRNA levels had a poorer prognosis than those with high XPC mRNA levels, suggesting that XPC defects may enhance tumor metastasis. However, the underlying mechanism is unclear. Here, we show that p53 transcriptional activity is modulated by XPC, whereby XPC stabilizes hHR23B to form an hHR23B-p53 complex that prevents p53 degradation. In addition, in lung cancer cells and xenograft tumors in nude mice, overexpression of XPC suppresses cell/tumor metastatic ability via repression of matrix metalloproteinase-1 (MMP1) transcription by p53. Among tumors from lung cancer patients, those with low XPC mRNA also tended to have low expression of MMP1 mRNA compared with those with high XPC mRNA. Patients with low XPC mRNA levels also more commonly had tumors with late-stage, distant metastasis (M1), nodal metastasis, and T value (P <0.001 for tumor stage, distant metastasis, and nodal metastasis; P = 0.006 for t value). In conclusion, p53 dysfunction caused by XPC defects in lung cancers may enhance tumor metastasis via increased MMP1 expression.

Original languageEnglish
Pages (from-to)10422-10432
Number of pages11
JournalCancer Research
Volume70
Issue number24
DOIs
Publication statusPublished - Dec 15 2010
Externally publishedYes

Fingerprint

Xeroderma Pigmentosum
Neoplasm Metastasis
Messenger RNA
Matrix Metalloproteinase 1
Lung Neoplasms
Neoplasms
Adenocarcinoma of lung
Heterografts
Nude Mice
DNA Damage

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

p53 dysfunction by xeroderma pigmentosum group C defects enhance lung adenocarcinoma metastasis via increased Mmp1 expression. / Wu, Yi Hui; Wu, Tzu Chin; Liao, Jiunn Wang; Yeh, Kun Tu; Chen, Chih Yi; Lee, Huei.

In: Cancer Research, Vol. 70, No. 24, 15.12.2010, p. 10422-10432.

Research output: Contribution to journalArticle

Wu, Yi Hui ; Wu, Tzu Chin ; Liao, Jiunn Wang ; Yeh, Kun Tu ; Chen, Chih Yi ; Lee, Huei. / p53 dysfunction by xeroderma pigmentosum group C defects enhance lung adenocarcinoma metastasis via increased Mmp1 expression. In: Cancer Research. 2010 ; Vol. 70, No. 24. pp. 10422-10432.
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