Suberoylanilide hydroxamic acid induces apoptosis and sub-G1 arrest of 320 HSR colon cancer cells

Pei Chang Sun, Ching Tzao, Ban Hen Chen, Chen Wei Liu, Cheng Ping Yu, Jong Shiaw Jin

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Background. Histone deacetylases and histone acetyl transferases covalently modify histone proteins, consequentially altering chromatin architecture and gene expression. Methods. The effects of suberoylanilide hydroxamic acid, a HDAC inhibitor, on 320 HSR colon cells were assessed in 320 HSR colon cancer cells. Results. Concentration and time-dependent inhibition of 320 HSR cell proliferation was observed. Treatment of 320 HSR cells with 5 M SAHA for 72 h significantly inhibited their growth by 50% as compared to that of the control. Fluorescence-activated cell sorting analysis demonstrated significant inhibition of cell cycle progression (sub-G1 arrest) and induction of apoptosis upon various SAHA concentrations after 48 h. In addition, the anti-apoptosis proteins, survivin and Bcl-xL, were significantly inhibited by SAHA after 72 h of treatment. Immunocytochemistry analysis revealed that SAHA-resistant cells were positive for cyclin A (85%), ki-67 (100%), p53 (100%), survivin (100%), and p21 (90%) expression. Furthermore, a significant increase cyclin A-, Ki-67-, p53-, survivin-, and p21-positive cells were noted in SAHA-resistant tumor cells. Conclusion. Our results demonstrated for the first time in 320 HSR colon adenocarcinoma cells that SAHA might be considered as an adjuvant therapy for colon adenocarcinoma.

Original languageEnglish
Article number76
JournalJournal of Biomedical Science
Volume17
Issue number1
DOIs
Publication statusPublished - 2010
Externally publishedYes

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Colonic Neoplasms
Cells
Apoptosis
Cyclin A
Histones
Colon
Histone Deacetylase Inhibitors
Histone Deacetylases
Adenocarcinoma
Cell proliferation
Transferases
Sorting
Gene expression
Chromatin
Tumors
Proteins
Fluorescence
vorinostat
Cell Cycle
Flow Cytometry

ASJC Scopus subject areas

  • Clinical Biochemistry
  • Molecular Biology
  • Cell Biology
  • Biochemistry, medical
  • Endocrinology, Diabetes and Metabolism
  • Pharmacology (medical)

Cite this

Suberoylanilide hydroxamic acid induces apoptosis and sub-G1 arrest of 320 HSR colon cancer cells. / Sun, Pei Chang; Tzao, Ching; Chen, Ban Hen; Liu, Chen Wei; Yu, Cheng Ping; Jin, Jong Shiaw.

In: Journal of Biomedical Science, Vol. 17, No. 1, 76, 2010.

Research output: Contribution to journalArticle

Sun, Pei Chang ; Tzao, Ching ; Chen, Ban Hen ; Liu, Chen Wei ; Yu, Cheng Ping ; Jin, Jong Shiaw. / Suberoylanilide hydroxamic acid induces apoptosis and sub-G1 arrest of 320 HSR colon cancer cells. In: Journal of Biomedical Science. 2010 ; Vol. 17, No. 1.
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