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Abstract
The intracellular kinase, Src, interacts with a diverse array of signaling elements, including the estrogen receptor to regulate breast cancer progression. Recent evidence has also implicated Src in mediating the response of breast cancer to endocrine agents and in the acquisition of antihormone resistance, a significant limiting factor to the clinical effectiveness of systemic endocrine therapy. A number of pharmacological inhibitors of Src kinase have been developed that are effective at suppressing breast cancer growth and invasion in vitro and inhibiting disease spread in vivo. Significantly, there appears to be added benefit when these agents are given in combination with anti-estrogens in endocrine-sensitive and -resistant models. These new findings suggest that Src inhibitors might have therapeutic value in breast cancer patients to improve endocrine response and circumvent resistance.
Financial & competing interests disclosure
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
No writing assistance was utilized in the production of this manuscript.