Circumventing Drug Resistance Pathways with a Nanoparticle-Based Photodynamic Method.

Abstract

Drug resistance remains the dominant impediment for cancer therapy, not only because compensatory drug resistance pathways are always activated, but also because of the cross-resistance of cancer cells to unrelated therapeutics. Herein, chemodrug-sensitive cancer cells, intrinsic drug-resistant cells, and acquired resistant cells were employed to uncover their biological response to a nanoparticle-based photodynamic method in tumoral, cellular, and molecular levels. We observed that nanoparticle-based photodynamic process with high therapeutic efficiency, intracellular delivery, and tumor penetration effect resulted in the indiscriminate and significant therapeutic outcome, in contrast to the diversiform effect of first-line chemo-drug, Temozolomide (TMZ). By real-time quantitative PCR array technique, we revealed that signals in classical resistance pathways were unaffected or downregulated, and photodynamic effect initiates cell apoptosis via downstream genes. The discovery that nanoparticulate photodynamic therapy bypasses the signals in multiple resistant pathways may imply an alternative route for combating drug resistance of cancer.

• Authors: Yan Liu, Qelger Bao, Zheng Chen, Lin Yao, Zheng Ci, Xiangyu Wei, Yongjie Wu, Jin Zhu, Kang Sun, Guangdong Zhou, Shiting Li, Wei Ma, Ke Tao
• Journal: Nano letters (Nano Lett) Vol. 21 Issue 21 Pg. 9115-9123 (11 10 2021) ISSN: 1530-6992 [Electronic] United States
• PMID: 34723551 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Antineoplastic Agents, Alkylating
• Temozolomide

Topics

• Antineoplastic Agents, Alkylating (pharmacology, therapeutic use)
• Apoptosis
• Brain Neoplasms (drug therapy)
• Cell Line, Tumor
• Drug Resistance, Neoplasm
• Glioblastoma (pathology)
• Humans
• Nanoparticles
• Temozolomide (pharmacology, therapeutic use)