American Association for Cancer Research
Browse
00085472can153465-sup-159904_1_supp_3385261_13fn18.docx (14.76 kB)

Supplemental Figure Legends from MYC Is a Crucial Mediator of TGFβ-Induced Invasion in Basal Breast Cancer

Download (14.76 kB)
journal contribution
posted on 2023-03-31, 00:11 authored by Magdalena A. Cichon, Megan E. Moruzzi, Tiziana A. Shqau, Erin Miller, Christine Mehner, Stephen P. Ethier, John A. Copland, Evette S. Radisky, Derek C. Radisky

Legends for Supplemental Figures S1-S5.

Funding

NCI

Mayo Clinic Breast Cancer SPORE

National Cancer Institute

Find out more...

History

ARTICLE ABSTRACT

Basal subtype breast cancers have a particularly poor prognosis, with high invasiveness and resistance to most targeted therapies. TGFβ and MYC drive central features of basal breast cancer: TGFβ is an autocrine and paracrine signaling factor that drives cell invasion and metastasis, and MYC is a central regulator of cellular proliferation that is upregulated in many cancer types. We show here that genetic or pharmacologic inhibition of MYC in MCF10A basal breast cells results in increased sensitivity to TGFβ-stimulated invasion and metastasis and also show that this signaling loop is dependent on activation of SRC. Analysis of human breast cancer datasets and additional experiments with breast cancer cell lines further suggest the relevance of this signaling loop in basal, but not luminal, breast cancers. Our results imply precaution should be taken when utilizing therapeutic inhibitors of MYC with basal breast cancer patients as this could lead to increased metastasis; however, simultaneous pharmacologic inhibition of SRC and MYC for these patients could facilitate the antiproliferative effects of MYC inhibition while blocking the consequent promotion of metastasis. Cancer Res; 76(12); 3520–30. ©2016 AACR.

Usage metrics

    Cancer Research

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC