1. Academic Validation
  2. Chromosome instability functions as a potential therapeutic reference by enhancing chemosensitivity to BCL-XL inhibitors in colorectal carcinoma

Chromosome instability functions as a potential therapeutic reference by enhancing chemosensitivity to BCL-XL inhibitors in colorectal carcinoma

  • Acta Pharmacol Sin. 2024 Aug 26. doi: 10.1038/s41401-024-01372-y.
Xiao Fang # 1 2 3 Wen-Ying Yu # 1 3 Chun-Miao Zhu 1 3 Nan Zhao 1 3 Wei Zhao 1 3 Ting-Ting Xie 1 3 Li-Jie Wei 1 3 Xi-Ran Sun 1 3 Juan Xie 1 3 Ya Zhao 4 5
Affiliations

Affiliations

  • 1 Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China.
  • 2 Clinical Medical College, Yangzhou University, Yangzhou, 225009, China.
  • 3 Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou, 225001, China.
  • 4 Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, China. zhaoya@yzu.edu.cn.
  • 5 Jiangsu Key Laboratory of Experimental & Translational Non-coding RNA Research, Yangzhou, 225001, China. zhaoya@yzu.edu.cn.
  • # Contributed equally.
Abstract

Chromosome instability (CIN) and subsequent aneuploidy are prevalent in various human malignancies, influencing tumor progression such as metastases and relapses. Extensive studies demonstrate the development of chemoresistance in high-CIN tumors, which poses significant therapeutic challenges. Given the association of CIN with poorer prognosis and suppressed immune microenvironment observed in colorectal carcinoma (CRC), here we aimed to discover chemotherapeutic drugs exhibiting increased inhibition against high-CIN CRC cells. By using machine learning methods, we screened out two Bcl-xL inhibitors Navitoclax and WEHI-539 as CIN-sensitive reagents in CRC. Subsequent analyses using a CIN-aneuploidy cell model confirmed the vulnerability of high-CIN CRC cells to these drugs. We further revealed the critical role of Bcl-xL in the viability of high-CIN CRC cells. In addition, to ease the evaluation of CIN levels in clinic, we developed a three-gene signature as a CIN surrogate to predict prognosis, chemotherapeutic and immune responses in CRC samples. Our results demonstrate the potential value of CIN as a therapeutic target in CRC treatment and the importance of Bcl-xL in regulating survival of high-CIN CRC cells, therefore representing a valuable attempt to translate a common trait of heterogeneous tumor cells into an effective therapeutic target.

Keywords

BCL-XL; Navitoclax; WEHI-539; chemosensitivity; chromosome instability; colorectal carcinoma.

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