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Title: Alpha-2 Heremans Schmid Glycoprotein (AHSG) Modulates Signaling Pathways in Head and Neck Squamous Cell Carcinoma Cell Line SQ20B

Abstract

This study was performed to identify the potential role of Alpha-2 Heremans Schmid Glycoprotein (AHSG) in Head and Neck Squamous Cell Carcinoma (HNSCC) tumorigenesis using an HNSCC cell line model. HNSCC cell lines are unique among cancer cell lines, in that they produce endogenous AHSG and do not rely, solely, on AHSG derived from serum. To produce our model, we performed a stable transfection to down-regulate AHSG in the HNSCC cell line SQ20B, resulting in three SQ20B sublines, AH50 with 50% AHSG production, AH20 with 20% AHSG production and EV which is the empty vector control expressing wild-type levels of AHSG. Utilizing these sublines, we examined the effect of AHSG depletion on cellular adhesion, proliferation, migration and invasion in a serum-free environment. We demonstrated that sublines EV and AH50 adhered to plastic and laminin significantly faster than the AH20 cell line, supporting the previously reported role of exogenous AHSG in cell adhesion. As for proliferative potential, EV had the greatest amount of proliferation with AH50 proliferation significantly diminished. AH20 cells did not proliferate at all. Depletion of AHSG also diminished cellular migration and invasion. TGF-β was examined to determine whether levels of the TGF-β binding AHSG influenced the effect ofmore » TGF-β on cell signaling and proliferation. Whereas higher levels of AHSG blunted TGF-β influenced SMAD and ERK signaling, it did not clearly affect proliferation, suggesting that AHSG influences on adhesion, proliferation, invasion and migration are primarily due to its role in adhesion and cell spreading. The previously reported role of AHSG in potentiating metastasis via protecting MMP-9 from autolysis was also supported in this cell line based model system of endogenous AHSG production in HNSCC. Together, these data show that endogenously produced AHSG in an HNSCC cell line, promotes in vitro cellular properties identified as having a role in tumorigenesis. Highlights: • Head and neck squamous cell carcinoma cell lines synthesize and secret AHSG. • AHSG depleted cell lines are significantly inhibited in their ability to proliferate, adhere, migrate, invade and protect MMP-9. • Human AHSG and bovine fetuin-A are functionally equivalent in regards to growth promotion of cancer cell lines.« less

Authors:
;  [1];  [2];  [3];  [1]
  1. Department of Biochemistry and Cancer Biology, Meharry Medical College, Nashville, TN 37208 (United States)
  2. Division of Surgical Oncology and Endocrine Surgery, Vanderbilt University Medical Center, Nashville, TN 37232 (United States)
  3. Division of Otolaryngology, Departments of Surgery and Pathology and Yale Cancer Center, Yale University, New Haven, CT 06520 (United States)
Publication Date:
OSTI Identifier:
22278255
Resource Type:
Journal Article
Journal Name:
Experimental Cell Research
Additional Journal Information:
Journal Volume: 321; Journal Issue: 2; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0014-4827
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; AUTOLYSIS; CARCINOMAS; CELL PROLIFERATION; GLYCOPROTEINS; GROWTH; HEAD; METASTASES; NECK

Citation Formats

Thompson, Pamela D., Sakwe, Amos, Koumangoye, Rainelli, Yarbrough, Wendell G., Ochieng, Josiah, and Marshall, Dana R., E-mail: dmarshall@mmc.edu. Alpha-2 Heremans Schmid Glycoprotein (AHSG) Modulates Signaling Pathways in Head and Neck Squamous Cell Carcinoma Cell Line SQ20B. United States: N. p., 2014. Web. doi:10.1016/J.YEXCR.2013.12.003.
Thompson, Pamela D., Sakwe, Amos, Koumangoye, Rainelli, Yarbrough, Wendell G., Ochieng, Josiah, & Marshall, Dana R., E-mail: dmarshall@mmc.edu. Alpha-2 Heremans Schmid Glycoprotein (AHSG) Modulates Signaling Pathways in Head and Neck Squamous Cell Carcinoma Cell Line SQ20B. United States. https://doi.org/10.1016/J.YEXCR.2013.12.003
Thompson, Pamela D., Sakwe, Amos, Koumangoye, Rainelli, Yarbrough, Wendell G., Ochieng, Josiah, and Marshall, Dana R., E-mail: dmarshall@mmc.edu. 2014. "Alpha-2 Heremans Schmid Glycoprotein (AHSG) Modulates Signaling Pathways in Head and Neck Squamous Cell Carcinoma Cell Line SQ20B". United States. https://doi.org/10.1016/J.YEXCR.2013.12.003.
@article{osti_22278255,
title = {Alpha-2 Heremans Schmid Glycoprotein (AHSG) Modulates Signaling Pathways in Head and Neck Squamous Cell Carcinoma Cell Line SQ20B},
author = {Thompson, Pamela D. and Sakwe, Amos and Koumangoye, Rainelli and Yarbrough, Wendell G. and Ochieng, Josiah and Marshall, Dana R., E-mail: dmarshall@mmc.edu},
abstractNote = {This study was performed to identify the potential role of Alpha-2 Heremans Schmid Glycoprotein (AHSG) in Head and Neck Squamous Cell Carcinoma (HNSCC) tumorigenesis using an HNSCC cell line model. HNSCC cell lines are unique among cancer cell lines, in that they produce endogenous AHSG and do not rely, solely, on AHSG derived from serum. To produce our model, we performed a stable transfection to down-regulate AHSG in the HNSCC cell line SQ20B, resulting in three SQ20B sublines, AH50 with 50% AHSG production, AH20 with 20% AHSG production and EV which is the empty vector control expressing wild-type levels of AHSG. Utilizing these sublines, we examined the effect of AHSG depletion on cellular adhesion, proliferation, migration and invasion in a serum-free environment. We demonstrated that sublines EV and AH50 adhered to plastic and laminin significantly faster than the AH20 cell line, supporting the previously reported role of exogenous AHSG in cell adhesion. As for proliferative potential, EV had the greatest amount of proliferation with AH50 proliferation significantly diminished. AH20 cells did not proliferate at all. Depletion of AHSG also diminished cellular migration and invasion. TGF-β was examined to determine whether levels of the TGF-β binding AHSG influenced the effect of TGF-β on cell signaling and proliferation. Whereas higher levels of AHSG blunted TGF-β influenced SMAD and ERK signaling, it did not clearly affect proliferation, suggesting that AHSG influences on adhesion, proliferation, invasion and migration are primarily due to its role in adhesion and cell spreading. The previously reported role of AHSG in potentiating metastasis via protecting MMP-9 from autolysis was also supported in this cell line based model system of endogenous AHSG production in HNSCC. Together, these data show that endogenously produced AHSG in an HNSCC cell line, promotes in vitro cellular properties identified as having a role in tumorigenesis. Highlights: • Head and neck squamous cell carcinoma cell lines synthesize and secret AHSG. • AHSG depleted cell lines are significantly inhibited in their ability to proliferate, adhere, migrate, invade and protect MMP-9. • Human AHSG and bovine fetuin-A are functionally equivalent in regards to growth promotion of cancer cell lines.},
doi = {10.1016/J.YEXCR.2013.12.003},
url = {https://www.osti.gov/biblio/22278255}, journal = {Experimental Cell Research},
issn = {0014-4827},
number = 2,
volume = 321,
place = {United States},
year = {Sat Feb 15 00:00:00 EST 2014},
month = {Sat Feb 15 00:00:00 EST 2014}
}