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Guerriero JL, Sotayo A, Ponichtera HE, Castrillon JA, Pourzia AL, Schad S, Johnson SF, Carrasco RD, Lazo S, Bronson RT, Davis SP, Lobera M, Nolan MA, Letai A. Abstract P3-05-05: Class IIa HDAC inhibition promotes an anti-tumor macrophage phenotype that induces breast tumor regression and inhibits metastasis. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p3-05-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
While tumor-associated macrophages (TAMs) often have net pro-tumor effects, their embedded location and their untapped potential provide impetus to the discovery of strategies to turn them against tumors. We recently reported that a first in class selective class IIa HDAC inhibitor (TMP195) influenced human monocyte responses to colony stimulating factors CSF-1 and CSF-2 in vitro. Here, we utilize a macrophage-dependent autochthonous mouse model of breast cancer to demonstrate that in vivo TMP195 treatment alters the tumor microenvironment and reduces tumor burden and pulmonary metastases through macrophage modulation. TMP195 induces recruitment and differentiation of highly phagocytic and stimulatory macrophages within tumors. Furthermore, combining TMP195 with chemotherapy regimens or T-cell checkpoint blockade in this model significantly enhances the durability of tumor reduction. These data introduce class IIa HDAC inhibition as a novel means to harness the anti-tumor potential of macrophages to enhance cancer therapy.
Citation Format: Guerriero JL, Sotayo A, Ponichtera HE, Castrillon JA, Pourzia AL, Schad S, Johnson SF, Carrasco RD, Lazo S, Bronson RT, Davis SP, Lobera M, Nolan MA, Letai A. Class IIa HDAC inhibition promotes an anti-tumor macrophage phenotype that induces breast tumor regression and inhibits metastasis [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P3-05-05.
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Affiliation(s)
- JL Guerriero
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - A Sotayo
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - HE Ponichtera
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - JA Castrillon
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - AL Pourzia
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - S Schad
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - SF Johnson
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - RD Carrasco
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - S Lazo
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - RT Bronson
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - SP Davis
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - M Lobera
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - MA Nolan
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
| | - A Letai
- Dana-Farber Cancer Institute, Boston, MA; Brigham and Women's Hospital, Boston, MA; Harvard Medical School, Boston, MA; GlaxoSmithKline, Cambridge, MA
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