Transthyretin stimulates tumor growth through regulation of tumor, immune, and endothelial cells

Chih Chun Lee, Xinchun Ding, Ting Zhao, Lingyan Wu, Susan Perkins, Hong Du, Cong Yan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Early detection of lung cancer offers an important opportunity to decrease mortality while it is still treatable and curable. Thirteen secretory proteins that are Stat3 downstream gene products were identified as a panel of biomarkers for lung cancer detection in human sera. This panel of biomarkers potentially differentiates different types of lung cancer for classification. Among them, the transthyretin (TTR) concentration was highly increased in human serum of lung cancer patients. TTR concentration was also induced in the serum, bronchoalveolar lavage fluid, alveolar type II epithelial cells, and alveolar myeloid cells of the CCSP-rtTA/(tetO)7-Stat3C lung tumor mouse model. Recombinant TTR stimulated lung tumor cell proliferation and growth, which were mediated by activation of mitogenic and oncogenic molecules. TTR possesses cytokine functions to stimulate myeloid cell differentiation, which are known to play roles in tumor environment. Further analyses showed that TTR treatment enhanced the reactive oxygen species production in myeloid cells and enabled them to become functional myeloid-derived suppressive cells. TTR demonstrated a great influence on a wide spectrum of endothelial cell functions to control tumor and immune cell migration and infiltration. TTR-treated endothelial cells suppressed T cell proliferation. Taken together, these 13 Stat3 downstream inducible secretory protein biomarkers potentially can be used for lung cancer diagnosis, classification, and as clinical targets for lung cancer personalized treatment if their expression levels are increased in a given lung cancer patient in the blood.

Original languageEnglish (US)
Pages (from-to)991-1002
Number of pages12
JournalJournal of Immunology
Volume202
Issue number3
DOIs
StatePublished - Feb 1 2019

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Prealbumin
Lung Neoplasms
Endothelial Cells
Growth
Myeloid Cells
Neoplasms
Alveolar Epithelial Cells
Biomarkers
Serum
Cell Proliferation
Lung
Bronchoalveolar Lavage Fluid
Early Detection of Cancer
Cell Movement
Cell Differentiation
Reactive Oxygen Species
Proteins
Cytokines
T-Lymphocytes
Mortality

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

Cite this

Transthyretin stimulates tumor growth through regulation of tumor, immune, and endothelial cells. / Lee, Chih Chun; Ding, Xinchun; Zhao, Ting; Wu, Lingyan; Perkins, Susan; Du, Hong; Yan, Cong.

In: Journal of Immunology, Vol. 202, No. 3, 01.02.2019, p. 991-1002.

Research output: Contribution to journalArticle

Lee, Chih Chun ; Ding, Xinchun ; Zhao, Ting ; Wu, Lingyan ; Perkins, Susan ; Du, Hong ; Yan, Cong. / Transthyretin stimulates tumor growth through regulation of tumor, immune, and endothelial cells. In: Journal of Immunology. 2019 ; Vol. 202, No. 3. pp. 991-1002.
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