Human periprostatic white adipose tissue is rich in stromal progenitor cells and a potential source of prostate tumor stroma
Autor: | Helena Coutinho, Ricardo Ribeiro, Carla Costa, Cátia Monteiro, Rui Medeiros, Anabela Cordeiro-da-Silva, Carlos Lopes, Avelino Fraga, Ricardo Silvestre, Carlos Lobato, Ângela Castela, Paulo Príncipe, José Manuel Lopes |
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Rok vydání: | 2012 |
Předmět: |
Male
Pathology medicine.medical_specialty Stromal cell Adipose Tissue White Adipose tissue macrophages Prostatic Hyperplasia CD34 Adipose tissue White adipose tissue Biology General Biochemistry Genetics and Molecular Biology Prostate cancer Prostate medicine Humans Progenitor cell Aged Stem Cells Prostatic Neoplasms Cell Differentiation Middle Aged Flow Cytometry medicine.disease medicine.anatomical_structure Disease Progression Complement Factor D Stromal Cells |
Zdroj: | Experimental Biology and Medicine. 237:1155-1162 |
ISSN: | 1535-3699 1535-3702 |
Popis: | A body of growing evidence now implicates white adipose tissue as a relevant source of stromal progenitor cells recruited to the tumor microenvironment to form supportive tumor stroma. While the role of periprostatic (PP) adipose tissue in prostate cancer progression has been barely appreciated, we sought to determine the progenitor cell population in PP adipose tissue and the association with prostate cancer. We isolated and characterized CD31−CD34+CD45−CD146− progenitor cells (adipose-derived stem cells [ASC]) in paired samples of PP and preperitoneal visceral adipose tissue from prostate tissue and peripheral blood mononuclear cells of prostate cancer and nodular prostatic hyperplasia patients. ASC were quantified by flow cytometry and confirmed through target gene expression. Here we show a significantly higher amount of ASC in PP than in visceral adipose tissue, independent of body mass index and prostatic disease. In the prostate, ASC are increased in cancer compared with prostatic nodular hyperplasia patients. Concordantly, adipsin gene ( CFD) expression, which is known to be up-regulated in adipose stem cells, was overexpressed in PP adipose tissue, in the prostate of cancer patients and in prostate CD31−CD34+CD45−CD146− sorted cells. ASC were found at higher levels in the blood of prostate cancer patients simultaneously overweight/obese. Present findings indicate that PP adipose tissue is a reservoir of progenitor cells with the potential to migrate towards prostate tumors, although its clinical significance merits further evaluation. |
Databáze: | OpenAIRE |
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