Semaphorin 7a exerts pleiotropic effects to promote breast tumor progression

S. A. Black, A. C. Nelson, N. J. Gurule, Bernard W Futscher, T. R. Lyons

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Understanding what drives breast tumor progression is of utmost importance for blocking tumor metastasis; we have identified that semaphorin 7a is a potent driver of ductal carcinoma in situ (DCIS) progression. Semaphorin 7a is a glycophosphatidylinositol membrane-anchored protein that promotes attachment and spreading in multiple cell types. Here, we show that increased expression of SEMA7A occurs in a large percentage of breast cancers and is associated with decreased overall and distant metastasis-free survival. In both in vitro and in vivo models, short hairpin-mediated silencing of SEMA7A reveals roles for semaphorin 7a in the promotion of DCIS growth, motility and invasion as well as lymphangiogenesis in the tumor microenvironment. Our studies also uncover a relationship between COX-2 and semaphorin 7a expression and suggest that semaphorin 7a promotes tumor cell invasion on collagen and lymphangiogenesis via activation of β 1 -integrin receptor. Our results suggest that semaphorin 7a may be novel target for blocking breast tumor progression.

Original languageEnglish (US)
Pages (from-to)5170-5178
Number of pages9
JournalOncogene
Volume35
Issue number39
DOIs
StatePublished - Sep 29 2016

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Semaphorins
Breast Neoplasms
Lymphangiogenesis
Carcinoma, Intraductal, Noninfiltrating
Neoplasm Metastasis
Tumor Microenvironment
Integrins
Neoplasms
Membrane Proteins
Collagen
Growth

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics
  • Cancer Research

Cite this

Semaphorin 7a exerts pleiotropic effects to promote breast tumor progression. / Black, S. A.; Nelson, A. C.; Gurule, N. J.; Futscher, Bernard W; Lyons, T. R.

In: Oncogene, Vol. 35, No. 39, 29.09.2016, p. 5170-5178.

Research output: Contribution to journalArticle

Black, SA, Nelson, AC, Gurule, NJ, Futscher, BW & Lyons, TR 2016, 'Semaphorin 7a exerts pleiotropic effects to promote breast tumor progression', Oncogene, vol. 35, no. 39, pp. 5170-5178. https://doi.org/10.1038/onc.2016.49
Black, S. A. ; Nelson, A. C. ; Gurule, N. J. ; Futscher, Bernard W ; Lyons, T. R. / Semaphorin 7a exerts pleiotropic effects to promote breast tumor progression. In: Oncogene. 2016 ; Vol. 35, No. 39. pp. 5170-5178.
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