Abstract:
:Previous studies have suggested a "catalytic role" in neoplastic angiogenesis and cancer progression for bone marrow-derived endothelial progenitor cells (EPC). However, preclinical and clinical studies have shown that the quantitative role of marrow-derived EPCs in cancer vascularization is extremely variable. We have found that human and murine white adipose tissue (WAT) is a very rich reservoir of CD45-CD34(+) EPCs with endothelial differentiation potential, containing a mean of 263 times more CD45-CD34(+) cells/mL than bone marrow. Compared with marrow-derived CD34(+) cells mobilized in blood by granulocyte colony-stimulating factor, purified WAT-CD34(+) cells expressed similar levels of stemness-related genes, significantly increased levels of angiogenesis-related genes, and increased levels of FAP-α, a crucial suppressor of antitumor immunity. In vitro, WAT-CD34(+) cells generated mature endothelial cells and capillary tubes as efficiently as mature mesenchymal cells. The coinjection of human WAT-CD34(+) cells from lipotransfer procedures contributed to tumor vascularization and significantly increased tumor growth and metastases in several orthotopic models of human breast cancer in immunodeficient mice. Endothelial cells derived from human WAT-CD34(+) cells lined the lumen of cancer vessels. These data indicate that CD34(+) WAT cells can promote cancer progression and metastases. Our results highlight the importance of gaining a better understanding of the role of different WAT-derived cells used in lipotransfer for breast reconstruction in patients with breast cancer.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Martin-Padura I,Gregato G,Marighetti P,Mancuso P,Calleri A,Corsini C,Pruneri G,Manzotti M,Lohsiriwat V,Rietjens M,Petit JY,Bertolini Fdoi
10.1158/0008-5472.CAN-11-1739subject
Has Abstractpub_date
2012-01-01 00:00:00pages
325-34issue
1eissn
0008-5472issn
1538-7445pii
0008-5472.CAN-11-1739journal_volume
72pub_type
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