Specific apoptosis induction in human papillomavirus-positive cervical carcinoma cells by photodynamic antisense regulation

Asako Yamayoshi, Kiyoko Kato, Shin Suga, Akimasa Ichinoe, Takahiro Arima, Takao Matsuda, Hidenori Kato, Akira Murakami, Norio Wake

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Human papillomavirus type 18 (HPV18) is frequently detected in cervical cancer cells. The viral proteins E6 and E7 are expressed consistently and have oncogenic activities. The E7 protein binds to a tumor suppressor, the retinoblastoma gene product (pRB), however, leading to the stabilization of tumor suppressor, p53 protein. On the other hand, another viral product, E6, forms complexes with p53 and abrogates its function, resulting in tumor progression. These facts imply that the E6 oncogene is one of the ideal targets for directed gene therapy in HPV-positive cervical cancer. In this study, we tried photodynamic antisense regulation of the antiapoptotic E6 expression using a photocross-linking reagent, 4,5′,8-trimethylpsoralen, conjugated oligo(nucleoside phosphorothioate) (Ps-S-Oligo). This photodynamic antisense strategy effectively elicited the apoptotic death of HPV18-positive cervical cancer cells through the selective repression of E6 mRNA and consequent stabilization of p53 protein. E7-mediated signals potentially activated the p53 function and mobilized the p53 pathway to deliver pro-apoptotic signals to the cancer cells, leading to the suppression of in vivo tumorigenesis. An extremely low concentration of cisplatin in addition to Ps-S-Oligos further up-regulated p53 activity, provoking massive apoptotic induction. These results suggest that the photodynamic antisense strategy has the great therapeutic potential in HPV-positive cervical cancers.

Original languageEnglish
Pages (from-to)66-79
Number of pages14
JournalOligonucleotides
Volume17
Issue number1
DOIs
Publication statusPublished - May 1 2007

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Uterine Cervical Neoplasms
Cells
Apoptosis
Carcinoma
Human papillomavirus 18
Tumors
Trioxsalen
Stabilization
Tumor Suppressor Protein p53
Gene therapy
Viral Proteins
Retinoblastoma Genes
Nucleosides
Cisplatin
Proteins
Genes
Tumor Suppressor Genes
Oncogenes
Genetic Therapy
Neoplasms

All Science Journal Classification (ASJC) codes

  • Molecular Medicine
  • Molecular Biology
  • Genetics

Cite this

Specific apoptosis induction in human papillomavirus-positive cervical carcinoma cells by photodynamic antisense regulation. / Yamayoshi, Asako; Kato, Kiyoko; Suga, Shin; Ichinoe, Akimasa; Arima, Takahiro; Matsuda, Takao; Kato, Hidenori; Murakami, Akira; Wake, Norio.

In: Oligonucleotides, Vol. 17, No. 1, 01.05.2007, p. 66-79.

Research output: Contribution to journalArticle

Yamayoshi, A, Kato, K, Suga, S, Ichinoe, A, Arima, T, Matsuda, T, Kato, H, Murakami, A & Wake, N 2007, 'Specific apoptosis induction in human papillomavirus-positive cervical carcinoma cells by photodynamic antisense regulation', Oligonucleotides, vol. 17, no. 1, pp. 66-79. https://doi.org/10.1089/oli.2006.0047
Yamayoshi, Asako ; Kato, Kiyoko ; Suga, Shin ; Ichinoe, Akimasa ; Arima, Takahiro ; Matsuda, Takao ; Kato, Hidenori ; Murakami, Akira ; Wake, Norio. / Specific apoptosis induction in human papillomavirus-positive cervical carcinoma cells by photodynamic antisense regulation. In: Oligonucleotides. 2007 ; Vol. 17, No. 1. pp. 66-79.
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