Targeted Profiling of Heat Shock Proteome in Radioresistant Breast Cancer Cells

Weili Miao, Ming Fan, Ming Huang, Jian-Jian Li, Yinsheng Wang

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Breast cancer is the most commonly diagnosed cancer and the second leading cause of cancer death in women. Radioresistance remains one of the most critical barriers in radiation therapy for breast cancer. In this study, we employed a parallel-reaction monitoring (PRM)-based targeted proteomic method to examine the reprogramming of the heat shock proteome during the development of radioresistance in breast cancer. In particular, we investigated the differential expression of heat shock proteins (HSPs) in two pairs of matched parental/radioresistant breast cancer cell lines. We were able to quantify 43 and 42 HSPs in the MCF-7 and MDA-MB-231 pairs of cell lines, respectively. By analyzing the commonly altered proteins, we found that several members of the HSP70 and HSP40 subfamilies of HSPs exhibited substantially altered expression upon development of radioresistance. Moreover, the expression of HSPB8 is markedly elevated in the radioresistant lines relative to the parental MCF-7 and MDA-MB-231 cells. Together, our PRM-based targeted proteomics method revealed the reprogramming of the heat shock proteome during the development of radioresistance in breast cancer cells and offered potential targets for sensitizing breast cancer cells toward radiation therapy.

Original languageEnglish (US)
Pages (from-to)326-332
Number of pages7
JournalChemical Research in Toxicology
Volume32
Issue number2
DOIs
StatePublished - Feb 18 2019

ASJC Scopus subject areas

  • Toxicology

Fingerprint Dive into the research topics of 'Targeted Profiling of Heat Shock Proteome in Radioresistant Breast Cancer Cells'. Together they form a unique fingerprint.

Cite this