Decorin and biglycan immunolocalization in non-villous structures of healthy and pathological human placentas
Alexandre U Borbely
Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorSilvia Daher
Department of Obstetrics, Federal University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorMarcia M Ishigai
Department of Pathology, Paulista Medical School, Federal University of São Paulo, São Paulo, Brazil
Search for more papers by this authorRosiane Mattar
Department of Obstetrics, Federal University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorSue Y Sun
Department of Obstetrics, Federal University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorMartin Knöfler
Department of Obstetrics and Fetal-Maternal Medicine, Reproductive Biology Unit, Medical University of Vienna, Vienna, Austria
Search for more papers by this authorEstela Bevilacqua
Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorCorresponding Author
Sergio F Oliveira
Department of Obstetrics, Federal University of Sao Paulo, São Paulo, Brazil
Address for correspondence: S F Oliveira MD, PhD, Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 1524, 05508-900 São Paulo, Brazil. e-mail: [email protected]Search for more papers by this authorAlexandre U Borbely
Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorSilvia Daher
Department of Obstetrics, Federal University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorMarcia M Ishigai
Department of Pathology, Paulista Medical School, Federal University of São Paulo, São Paulo, Brazil
Search for more papers by this authorRosiane Mattar
Department of Obstetrics, Federal University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorSue Y Sun
Department of Obstetrics, Federal University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorMartin Knöfler
Department of Obstetrics and Fetal-Maternal Medicine, Reproductive Biology Unit, Medical University of Vienna, Vienna, Austria
Search for more papers by this authorEstela Bevilacqua
Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, São Paulo, Brazil
Search for more papers by this authorCorresponding Author
Sergio F Oliveira
Department of Obstetrics, Federal University of Sao Paulo, São Paulo, Brazil
Address for correspondence: S F Oliveira MD, PhD, Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 1524, 05508-900 São Paulo, Brazil. e-mail: [email protected]Search for more papers by this authorAbstract
Aims
Decorin and biglycan are members of the small leucine-rich proteoglycan family, and constituents of both the extracellular matrix (ECM) and the cell surface. They are recognized as important factors in the control of proliferation, migration and invasion in vivo and in vitro. In this study, the localization patterns of decorin and biglycan were determined in healthy placentas and in highly invasive placental pathologies.
Methods and results
The study included immunolocalization of decorin and biglycan in samples of first-trimester and term placentas, placenta accreta, invasive mole, and choriocarcinoma. Extravillous cytotrophoblast (EVT) cells were positive for both proteoglycans in all pathologies and in first-trimester placentas, although not in term placentas. Biglycan was immunolocalized in the ECM of all healthy and pathological placentas, whereas decorin was observed only in term placenta ECM.
Conclusions
The expression of both proteoglycans was cell-specific and gestation time-dependent in healthy placentas, and was associated with invasive EVT cells in pathological placentas. In view of the biological properties of these molecules, it is possible that the biglycan pattern found here is intrinsically implicated in the invasive activity of EVT cells in both healthy and disordered placentas.
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