Pharmacological activity of OST-01, a natural product from baccharis coridifolia, on breast cancer cells

IF 29.5 1区医学 Q1 HEMATOLOGY

Journal of Hematology & Oncology Pub Date : 2025-02-07 DOI:10.1186/s13045-025-01668-4

HyunJun Kang, Dinh Hoa Hoang, Melissa Valerio, Khyatiben Pathak, William Graff, Alexis LeVee, Jun Wu, Mark A. LaBarge, David Frankhouser, Russell C. Rockne, Patrick Pirrotte, Bin Zhang, Joanne Mortimer, Le Xuan Truong Nguyen, Guido Marcucci

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引用次数: 0

Abstract

Natural products have long been a viable source of therapeutic agents, providing unique structures and mechanisms that may be beneficial for cancer treatment. Herein we first report on the anticancer activity OST-01, a natural product from Baccharis Coridifolia, on breast cancer cells, including triple-negative breast cancer (TNBC). OST-01 significantly inhibited cell proliferation and oncogenic activities of TNBC cells in vitro. OST-01 also markedly inhibited TNBC tumor growth in vivo, with > 50% reduction in tumor size compared to vehicle control treatment in different in vivo models, i.e., cell line-derived (CDX), patient-derived (PDX), and mammary fat pad xenografts. Mechanistically, OST-01 induces ferroptosis by downregulating LRP8-regulated selenoproteins, i.e., GPX4. A shift from a basal-mesenchymal to a luminal-epithelial state of breast cancer stem cells (BCSCs) as supported by the downregulation of stemness (e.g., CD44) and mesenchymal (e.g., FN1 and vimentin) markers, along with the upregulation of differentiation markers (e.g., CD24) and luminal-epithelial markers (e.g., CK19), was also observed.

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来源期刊

Journal of Hematology & Oncology 医学-血液学

CiteScore

48.10

自引率

2.10%

发文量

169

审稿时长

6-12 weeks

期刊介绍： The Journal of Hematology & Oncology, an open-access journal, publishes high-quality research covering all aspects of hematology and oncology, including reviews and research highlights on "hot topics" by leading experts. Given the close relationship and rapid evolution of hematology and oncology, the journal aims to meet the demand for a dedicated platform for publishing discoveries from both fields. It serves as an international platform for sharing laboratory and clinical findings among laboratory scientists, physician scientists, hematologists, and oncologists in an open-access format. With a rapid turnaround time from submission to publication, the journal facilitates real-time sharing of knowledge and new successes.