Skip to main navigation Skip to search Skip to main content

Targeting undruggable phosphatase overcomes trastuzumab resistance by inhibiting multi-oncogenic kinases.

  • Lu Wang
  • , Yusheng Lin
  • , Zhimeng Yao
  • , Nipun Babu
  • , Wan Lin
  • , Chaoying Chen
  • , Liang Du
  • , Songwang Cai
  • , Yunlong Pan
  • , Xiao Xiong
  • , Qiantao Ye
  • , Hongzheng Ren
  • , Dianzheng Zhang
  • , Yexi Chen
  • , Sai-Ching Jim Yeung
  • , Edwin Bremer
  • , Hao Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

AIMS: Resistance to targeted therapy is one of the critical obstacles in cancer management. Resistance to trastuzumab frequently develops in the treatment for HER2

METHODS: Four public datasets were used to screen PTP candidates in relation to trastuzumab responsiveness in HER2

RESULTS: PTPRO was identified as the key PTP which influences trastuzumab responsiveness and patient survival. PTPRO de-phosphorated several TKs, including the previously overlooked substrate ERBB3, thereby inhibiting multiple oncogenic pathways associated with drug resistance. Notably, PTPRO, previously deemed "undruggable," was effectively upregulated by saRNA-loaded nanoparticles. The upregulated PTPRO simultaneously inhibited ERBB3, ERBB2, and downstream SRC signaling pathways, thereby counteracting trastuzumab resistance.

CONCLUSIONS: Antibody-conjugated saRNA represents an innovative approach for targeting "undruggable" PTPs.

Original languageAmerican English
JournalDrug Resistance Updates
Volume76
DOIs
StatePublished - Sep 1 2024

Cite this