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Cytokine profile of human adipose-derived stem cells: Expression of angiogenic, hematopoietic, and pro-inflammatory factors

✍ Scribed by Gail E. Kilroy; Sandra J. Foster; Xiying Wu; Joseph Ruiz; Sonya Sherwood; Aaron Heifetz; John W. Ludlow; Dawn M. Stricker; Suma Potiny; Patrick Green; Yuan-Di C. Halvorsen; Bentley Cheatham; Robert W. Storms; Jeffrey M. Gimble

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
228 KB
Volume
212
Category
Article
ISSN
0021-9541

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✦ Synopsis

Abstract

Adipose tissue serves as a source of adipokines and cytokines with both local and systemic actions in health and disease. In this study, we examine the hypothesis that multipotent human adipose‐derived stem cells (ASCs), capable of differentiating along the adipocyte, chondrocyte, and osteoblast pathways, contribute to adipose tissue‐derived cytokine secretion. Following exposure to basic fibroblast growth factor (bFGF) or epidermal growth factor (EGF), the ASCs significantly increase their secretion of hepatocyte growth factor (HGF), a cytokine implicated in hematopoiesis, vasculogenesis, and mammary epithelial duct formation. Ascorbic acid synergizes with these inductive factors, further increasing HGF levels. Following exposure to lipopolysaccharide, ASCs increase their secretion of both hematopoietic (granulocyte/monocyte, granulocyte, and macrophage colony stimulating factors, interleukin 7) and proinflammatory (interleukins 6, 8, and 11, tumor necrosis factor α) cytokines based on ELISA and RT‐PCR. In co‐cultures established with umbilical cord blood‐derived CD34^+^ cells, the ASCs support long‐term hematopoiesis in vitro. Furthermore, in short‐term 12‐day co‐cultures, the ASC maintain and expand the numbers of both myeloid and lymphoid progenitors. These observations are consistent with the functionality of the secreted cytokines and confirm recent reports by other laboratories concerning the hematopoietic supportive capability of ASCs. We conclude that the ASCs display cytokine secretory properties similar to those reported for bone marrow‐derived mesenchymal stem cells (MSCs). J. Cell. Physiol. 212:702–709, 2007. © 2007 Wiley‐Liss, Inc.

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