Novel sesquiterpene lactone analogues as potent anti-breast cancer agents

Area of Science:

• Organic Chemistry
• Cancer Biology
• Pharmacology

Background:

• Triple-negative breast cancer (TNBC) presents a significant clinical challenge due to its aggressive nature and limited treatment options.
• Developing effective anti-TNBC agents remains a critical unmet need in oncology.

Purpose of the Study:

• To synthesize and evaluate novel deoxyelephantopin ester derivatives (DETDs) for anti-TNBC activity.
• To investigate the efficacy of DETD-35, a promising derivative, against TNBC in vitro and in vivo.

Main Methods:

• Organic synthesis of 58 DETDs from deoxyelephantopin (DET).
• In vitro antiproliferative, migration, invasion, and cell-cycle analyses using MDA-MB-231 TNBC cells.
• In vivo efficacy study in a lung metastatic MDA-MB-231 xenograft mouse model.
• Assessment of synergistic effects with paclitaxel (PTX).

Main Results:

• DETD-35 demonstrated potent, selective antiproliferative activity against TNBC cells without affecting normal cells.
• DETD-35 effectively inhibited TNBC cell migration, invasion, and motility, inducing apoptosis.
• In vivo, DETD-35 significantly suppressed lung metastasis and reduced VEGF and COX-2 expression.
• DETD-35 exhibited synergistic antitumor effects with paclitaxel both in vitro and in vivo.

Conclusions:

• The novel compound DETD-35 shows significant potential as a therapeutic or adjuvant agent for metastatic TNBC.
• Further development of DETD-35 could lead to improved treatment strategies for this challenging cancer.
• The study highlights the therapeutic promise of DETD derivatives in oncology.