Stromal cyclin D1 promotes heterotypic immune signaling and breast cancer growth

Pestell, TG, Jiao, X, Kumar, M, Peck, AR, Prisco, M, Deng, S, Li, Z, Ertel, A, Casimiro, MC, Ju, X, Di Rocco, A, Di Sante, G, Katiyar, S, Shupp, A, Lisanti, MP ORCID:, Jain, P, Wu, K, Rui, H, Hooper, DC, Yu, Z, Goldman, AR, Speicher, DW, Laury-Kleintop, L and Pestell, RG 2017, 'Stromal cyclin D1 promotes heterotypic immune signaling and breast cancer growth' , Oncotarget, 8 , pp. 81754-81775.

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The cyclin D1 gene encodes the regulatory subunit of a holoenzyme that drives cell autonomous cell cycle progression and proliferation. Herein we show cyclin D1 abundance is increased >30-fold in the stromal fibroblasts of patients with invasive breast cancer, associated with poor outcome. Cyclin D1 transformed hTERT human fibroblast to a cancer-associated fibroblast phenotype. Stromal fibroblast expression of cyclin D1 (cyclin D1Stroma) in vivo, enhanced breast epithelial cancer tumor growth, restrained apoptosis, and increased autophagy. Cyclin D1Stroma had profound effects on the breast tumor microenvironment increasing the recruitment of F4/80+ and CD11b+ macrophages and increasing angiogenesis. Cyclin D1Stroma induced secretion of factors that promoted expansion of stem cells (breast stem-like cells, embryonic stem cells and bone marrow derived stem cells). Cyclin D1Stroma resulted in increased secretion of proinflammatory cytokines (CCL2, CCL7, CCL11, CXCL1, CXCL5, CXCL9, CXCL12), CSF (CSF1, GM-CSF1) and osteopontin (OPN) (30-fold). OPN was induced by cyclin D1 in fibroblasts, breast epithelial cells and in the murine transgenic mammary gland and OPN was sufficient to induce stem cell expansion. These results demonstrate that cyclin D1Stroma drives tumor microenvironment heterocellular signaling, promoting several key hallmarks of cancer.

Item Type: Article
Schools: Schools > School of Environment and Life Sciences > Biomedical Research Centre
Journal or Publication Title: Oncotarget
Publisher: Impact Journals
ISSN: 1949-2553
Related URLs:
Depositing User: MP Lisanti
Date Deposited: 22 Nov 2017 12:24
Last Modified: 15 Feb 2022 22:40

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