p66Shc protein through a redox mechanism enhances the progression of prostate cancer cells towards castration-resistance

Dannah R. Miller, Matthew A. Ingersoll, Arpita Chatterjee, Brian Baker, Shashank Shrishrimal, Elizabeth A. Kosmacek, Yuxiang Zhu, Pi Wan Cheng, Rebecca E. Oberley-Deegan, Ming Fong Lin

Research output: Contribution to journalArticle

Abstract

Prostate cancer (PCa)remains the second leading cause of cancer-related deaths in U.S. men due to the development of the castration-resistant (CR)PCa phenotype. A useful cell model for analysis of the molecular mechanism of PCa progression is required for developing targeted therapies toward CR PCa. In this study, we established a PCa cell progressive model in three separate cell lines, of which androgen-independent (AI)cells were derived from respective androgen-sensitive (AS)cells. Those AI PCa cells obtain the biochemical properties of the clinical CR phenotype, including AR and PSA expression as well as enhanced proliferation and tumorigenicity under androgen-deprived conditions. Thus, those AI cells recapitulate CR PCa and exhibit increased oxidant species levels as well as enhanced signaling of proliferation and survival pathways. H2O2 treatment directly enhanced AS cell growth and migration, which was counteracted by antioxidant N-acetyl cysteine (NAC). We further identified p66Shc protein enhances the production of oxidant species which contributes to phenotypic and cell signaling alterations from AS to AI PCa cells. H2O2-treated LNCaP-AS cells had a similar signaling profile to that of LNCaP-AI or p66Shc subclone cells. Conversely, the oxidant species-driven alterations of LNCaP-AI and p66Shc subclone cell signaling is mitigated by p66Shc knockdown. Moreover, LNCaP-AI cells and p66Shc subclones, but not LNCaP-AS cells, develop xenograft tumors with metastatic nodules, correlating with p66Shc protein levels. Together, the data shows that p66Shc enhances oxidant species production that plays a role in promoting PCa progression to the CR stage.

Original languageEnglish (US)
Pages (from-to)24-34
Number of pages11
JournalFree Radical Biology and Medicine
Volume139
DOIs
StatePublished - Aug 1 2019

Fingerprint

Castration
Androgens
Oxidation-Reduction
Prostatic Neoplasms
Cells
Proteins
Oxidants
Cell signaling
Acetylcysteine
Phenotype
Molecular Models
Cell growth
Heterografts
Cell Movement
Cysteine
Tumors
Neoplasms
Antioxidants

Keywords

  • Castration-resistant prostate cancer
  • Prostate cancer
  • ROS
  • p66Shc

ASJC Scopus subject areas

  • Biochemistry
  • Physiology (medical)

Cite this

p66Shc protein through a redox mechanism enhances the progression of prostate cancer cells towards castration-resistance. / Miller, Dannah R.; Ingersoll, Matthew A.; Chatterjee, Arpita; Baker, Brian; Shrishrimal, Shashank; Kosmacek, Elizabeth A.; Zhu, Yuxiang; Cheng, Pi Wan; Oberley-Deegan, Rebecca E.; Lin, Ming Fong.

In: Free Radical Biology and Medicine, Vol. 139, 01.08.2019, p. 24-34.

Research output: Contribution to journalArticle

Miller, Dannah R. ; Ingersoll, Matthew A. ; Chatterjee, Arpita ; Baker, Brian ; Shrishrimal, Shashank ; Kosmacek, Elizabeth A. ; Zhu, Yuxiang ; Cheng, Pi Wan ; Oberley-Deegan, Rebecca E. ; Lin, Ming Fong. / p66Shc protein through a redox mechanism enhances the progression of prostate cancer cells towards castration-resistance. In: Free Radical Biology and Medicine. 2019 ; Vol. 139. pp. 24-34.
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abstract = "Prostate cancer (PCa)remains the second leading cause of cancer-related deaths in U.S. men due to the development of the castration-resistant (CR)PCa phenotype. A useful cell model for analysis of the molecular mechanism of PCa progression is required for developing targeted therapies toward CR PCa. In this study, we established a PCa cell progressive model in three separate cell lines, of which androgen-independent (AI)cells were derived from respective androgen-sensitive (AS)cells. Those AI PCa cells obtain the biochemical properties of the clinical CR phenotype, including AR and PSA expression as well as enhanced proliferation and tumorigenicity under androgen-deprived conditions. Thus, those AI cells recapitulate CR PCa and exhibit increased oxidant species levels as well as enhanced signaling of proliferation and survival pathways. H2O2 treatment directly enhanced AS cell growth and migration, which was counteracted by antioxidant N-acetyl cysteine (NAC). We further identified p66Shc protein enhances the production of oxidant species which contributes to phenotypic and cell signaling alterations from AS to AI PCa cells. H2O2-treated LNCaP-AS cells had a similar signaling profile to that of LNCaP-AI or p66Shc subclone cells. Conversely, the oxidant species-driven alterations of LNCaP-AI and p66Shc subclone cell signaling is mitigated by p66Shc knockdown. Moreover, LNCaP-AI cells and p66Shc subclones, but not LNCaP-AS cells, develop xenograft tumors with metastatic nodules, correlating with p66Shc protein levels. Together, the data shows that p66Shc enhances oxidant species production that plays a role in promoting PCa progression to the CR stage.",
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AU - Miller, Dannah R.

AU - Ingersoll, Matthew A.

AU - Chatterjee, Arpita

AU - Baker, Brian

AU - Shrishrimal, Shashank

AU - Kosmacek, Elizabeth A.

AU - Zhu, Yuxiang

AU - Cheng, Pi Wan

AU - Oberley-Deegan, Rebecca E.

AU - Lin, Ming Fong

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AB - Prostate cancer (PCa)remains the second leading cause of cancer-related deaths in U.S. men due to the development of the castration-resistant (CR)PCa phenotype. A useful cell model for analysis of the molecular mechanism of PCa progression is required for developing targeted therapies toward CR PCa. In this study, we established a PCa cell progressive model in three separate cell lines, of which androgen-independent (AI)cells were derived from respective androgen-sensitive (AS)cells. Those AI PCa cells obtain the biochemical properties of the clinical CR phenotype, including AR and PSA expression as well as enhanced proliferation and tumorigenicity under androgen-deprived conditions. Thus, those AI cells recapitulate CR PCa and exhibit increased oxidant species levels as well as enhanced signaling of proliferation and survival pathways. H2O2 treatment directly enhanced AS cell growth and migration, which was counteracted by antioxidant N-acetyl cysteine (NAC). We further identified p66Shc protein enhances the production of oxidant species which contributes to phenotypic and cell signaling alterations from AS to AI PCa cells. H2O2-treated LNCaP-AS cells had a similar signaling profile to that of LNCaP-AI or p66Shc subclone cells. Conversely, the oxidant species-driven alterations of LNCaP-AI and p66Shc subclone cell signaling is mitigated by p66Shc knockdown. Moreover, LNCaP-AI cells and p66Shc subclones, but not LNCaP-AS cells, develop xenograft tumors with metastatic nodules, correlating with p66Shc protein levels. Together, the data shows that p66Shc enhances oxidant species production that plays a role in promoting PCa progression to the CR stage.

KW - Castration-resistant prostate cancer

KW - Prostate cancer

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