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Harnessing Nature’s Chemistry: Deciphering Olive Oil Phenolics for the Control of Invasive Breast Carcinoma
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Harnessing Nature’s Chemistry: Deciphering Olive Oil Phenolics for the Control of Invasive Breast Carcinoma
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Journal Article
Harnessing Nature’s Chemistry: Deciphering Olive Oil Phenolics for the Control of Invasive Breast Carcinoma
2025
Overview
Breast cancer (BC) is the most common malignancy and the second-leading cause of cancer-related mortalities in women. Epidemiological studies suggested the reduced BC incidence in Mediterranean populations due to the daily consumption of diets rich in extra-virgin olive oil (EVOO). EVOO secoiridoid phenolics are widely known for their positive outcomes on multiple cancers, including BC. The current study investigates the suppressive effects of individual and combined EVOO phenolics for BC progression and motility. Screening of a small library of EVOO phenolics at a single dose of 10 µM against the viability of the BC cell lines ZR-75-1 (luminal A) and MDA-MB-231 (triple negative BC, TNBC) identified oleocanthal (OC) and ligstroside aglycone (LA) as the most active hits. Screening of EVOO phenolics for BC cells migration inhibition identified OC, LA, and the EVOO lignans acetoxypinoresinol and pinoresinol as the most active hits. Combination studies of different olive phenolics showed that OC combined with LA had the best synergistic inhibitory effects against the TNBC MDA-MB-231 cells migration. A combination of 5 µM of each of OC and LA potently suppressed the migration and invasion of the MDA-MB-231 cells versus LA and OC individual therapies and vehicle control (VC). Animal studies using the ZR-75-1 BC cells orthotopic xenografting model in female nude mice showed significant tumor progression suppression by the combined OC-LA, 5 mg/kg each, ip, 3X/week treatments compared to individual LA and OC treatments and VC. The BC suppressive effects of the OC-LA combination were associated with the modulation of SMYD2–EZH2–STAT3 signaling pathway. A metastasis–clonogenicity animal study model using female nude mice subjected to tail vein injection of MDA-MB-231-Luc TNBC cells also revealed the effective synergy of the combined OC-LA, 5 mg/kg each, compared to their individual therapies and VC. Thus, EVOO cultivars rich in OC with optimal LA content can be useful nutraceuticals for invasive hormone-dependent BC and TNBC progression and metastasis.
Publisher
MDPI AG,MDPI
Subject
/ Animals
/ Antineoplastic Agents, Phytogenic - chemistry
/ Antineoplastic Agents, Phytogenic - pharmacology
/ Breast Neoplasms - drug therapy
/ Breast Neoplasms - pathology
/ Cell Movement - drug effects
/ Cell Proliferation - drug effects
/ Cyclopentane Monoterpenes - pharmacology
/ EVOO
/ Female
/ Humans
/ Kinases
/ Mice
/ Proteins
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