Mouse primordial germ cells (PGCs) isolated from the dorsal mesentery and gonadal ridges of 10.5-12.5 days post coitum (dpc) embryos showed a progressively increasing adhesiveness to laminin and fibronectin coated substrates, whereas type I collagen and various glycosaminoglycans (hyaluronic acid, heparin and chondroitin-sulphates) were poor adhesive substrates. At later stages germ cells appeared to lose their adhesiveness to fibronectin and laminin substrates; the ability to adhere to laminin decreased very rapidly in male and slowly in female germ cells. Oocytes and prospermatogonia from 15.5 dpc fetal gonads showed poor adhesiveness to all substrates tested. PGC adhesion to laminin and fibronectin substrates did not require calcium but was markedly trypsin sensitive. Antibodies against the fibronectin receptor of CHO fibroblasts and short peptides containing the Arg-Gly-Asp sequence greatly reduced PGC adhesion to fibronectin. Following adhesion to laminin or fibronectin, most PGCs did not exhibit a morphology typical of motile cells, but remained spherical. A significant proportion (about 30%) of oocytes from 13.5-14.5 dpc embryos appeared, however, able to spread and elongate following attachment to laminin. The results support the hypothesis that mouse PGCs may utilize laminin and/or fibronectin as adhesive substrates during migration and gonad colonization, but indicate that additional factors are probably required to promote PGC motility. In addition, our data provide indirect evidence that binding sites for specific components of extracellular matrix are present in PGCs, and that their expression may be developmentally regulated.

DE FELICI, M., DOLCI IANNINI, S. (1989). In vitro adhesion of mouse fetal germ cells to extracellular matrix components. CELL DIFFERENTIATION AND DEVELOPMENT, 26(2), 87-96.

In vitro adhesion of mouse fetal germ cells to extracellular matrix components

DE FELICI, MASSIMO;DOLCI IANNINI, SUSANNA
1989-03-01

Abstract

Mouse primordial germ cells (PGCs) isolated from the dorsal mesentery and gonadal ridges of 10.5-12.5 days post coitum (dpc) embryos showed a progressively increasing adhesiveness to laminin and fibronectin coated substrates, whereas type I collagen and various glycosaminoglycans (hyaluronic acid, heparin and chondroitin-sulphates) were poor adhesive substrates. At later stages germ cells appeared to lose their adhesiveness to fibronectin and laminin substrates; the ability to adhere to laminin decreased very rapidly in male and slowly in female germ cells. Oocytes and prospermatogonia from 15.5 dpc fetal gonads showed poor adhesiveness to all substrates tested. PGC adhesion to laminin and fibronectin substrates did not require calcium but was markedly trypsin sensitive. Antibodies against the fibronectin receptor of CHO fibroblasts and short peptides containing the Arg-Gly-Asp sequence greatly reduced PGC adhesion to fibronectin. Following adhesion to laminin or fibronectin, most PGCs did not exhibit a morphology typical of motile cells, but remained spherical. A significant proportion (about 30%) of oocytes from 13.5-14.5 dpc embryos appeared, however, able to spread and elongate following attachment to laminin. The results support the hypothesis that mouse PGCs may utilize laminin and/or fibronectin as adhesive substrates during migration and gonad colonization, but indicate that additional factors are probably required to promote PGC motility. In addition, our data provide indirect evidence that binding sites for specific components of extracellular matrix are present in PGCs, and that their expression may be developmentally regulated.
mar-1989
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore BIO/17 - ISTOLOGIA
English
Con Impact Factor ISI
Germ Cells; Male; Female; Mice; Cell Adhesion; Animals; Laminin; Fibronectins; Extracellular Matrix
DE FELICI, M., DOLCI IANNINI, S. (1989). In vitro adhesion of mouse fetal germ cells to extracellular matrix components. CELL DIFFERENTIATION AND DEVELOPMENT, 26(2), 87-96.
DE FELICI, M; DOLCI IANNINI, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/66241
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