I Seed Implantation Enhances Arsenic Trioxide-induced Apoptosis and Anti-angiogenesis in Lung Cancer Xenograft Mice

Overview

Journal Clin Transl Oncol

Specialty Oncology

Date 2023 Feb 1

PMID 36723786

Authors

Zheng-Hong Chen

Yi-Li Zhang

Bin Yuan

Wen-Juan Chen

Guang-Yan Lei

Le Han

Affiliations

Soon will be listed here.

Abstract

Background And Purpose: Arsenic trioxide (ATO) exerts anticancer effects on lung cancer. However, the clinical use of ATO is limited due to its systemic toxicity and resistance of lung cancer cells. The present study aimed to investigate the effects of ATO, alone and in combination with I seed implantation on tumor growth and proliferation in lung cancer xenograft mice, and investigate the possible molecular mechanisms.

Methods: The transmission electron microscope observed the tumor ultrastructure of lung cancer xenograft mice. The proliferation index of Ki-67 and the number and morphology of tumor microvessels were detected with immunohistochemical staining. The protein and mRNA expression were examined by western blot and real-time PCR assay.

Results: The in vivo results demonstrated that ATO combined with I seed significantly inhibited tumor growth and proliferation, as well as promoted apoptosis, and decreased the Ki-67 index and microvessel density in lung cancer xenograft mice. Moreover, ATO combined with I seed decreased the protein and mRNA expression levels of HIF-1α, VEGF, and BCL-2, and increased those of BAX and P53.

Conclusions: ATO combined with I seed significantly inhibited tumor growth and proliferation in lung cancer, which may be accomplished by inhibiting tumor angiogenesis and inducing apoptosis.

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