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Frontiers in Immunology

Frontiers in Immunology

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The transdermal cream of Formestane anti-breast cancer by controlling PI3K-Akt pathway and the tumor immune microenvironment.

Published:1 January 2023 DOI: 10.3389/fimmu.2023.1041525 PMID: 37056757
Lanyang Gao, Lei Zhu, Chen Shen, Xiaoming Hou, Youyou Chen, Linglin Zou, Huiyan Qiang, Alexander T Teichmann, Wenguang Fu, Yao Luo

Abstract

Background: Treatment of ER+ breast cancer with intramuscular formulation of Formestane (4-OHA) shrinks the tumor within weeks. Since the tedious way of intramuscular administration and side effects are not suited for adjuvant treatment, Formestane was withdrawn from the market. A new transdermal formulation of 4-OHA cream may overcome the defects and retain the effect of shrinking the breast cancer tumor. However, the effects of 4-OHA cream on breast cancer need further confirmatory studies.

Methods: In this work, in vivo, the influence of 4-OHA cream on breast cancer was evaluated using the mode of 7,12-dimethylbenz(a)anthracene (DMBA) induced rat mammary cancer. We explored the common molecule mechanisms of action of 4-OHA cream and its injection formulation on breast cancer through RNA- sequencing-based transcriptome analysis and several biochemical experiments.

Results: The results showed that the cream substantially reduced the entire quantity, size, and volum of tumors in DMBA-treated rats consistent with 4-OHA injection, and indicated that there were comprehensive signals involved in 4-OHA antitumor activity, such as ECM-receptor interaction, focal adhesion, PI3K-Akt signaling pathway, and proteoglycans in cancer. In addition, we observed that both 4-OHA formulations could enhance immune infiltration, especially CD8+ T cells, B cells, natural killer cells, and macrophages infiltration, in the DMBA-induced mammary tumor tissues. The antitumor effects of 4-OHA partly depended on these immune cells.

Conclusion: 4-OHA cream could inhibit breast cancer growth as its injection formulation and may provide a new way for neoadjuvant treatment of ER+ breast cancer.

Substances (3)

Related products
Procduct Name CAS Molecular Formula Supplier Price
Formestane 566-48-3 C19H26O3 248 suppliers $32.00-$2055.90
7,12-DIMETHYLBENZ[A]ANTHRACENE 57-97-6 C20H16 227 suppliers $34.00-$2425.50
FORMESTANE 848-35-1 C19H28O3 8 suppliers Inquiry
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