title: Culture and co-culture of DU145 prostate carcinoma, osteoblasts and HT-29 colon carcinoma cells on a fabricated type III collagen matrix.
abstract: DU145 prostate carcinoma cells cultured on type III collagen possessed a highly migratory potential which was twice as much as HT-29 colon carcinoma cells. Prior to attachment to collagen, DU145 cells were highly reactive for fibronectin and after attachment clear zones between cells and collagen suggested protease activity. HT-29 cells attached to type III collagen forming dome-like polyps, however, tight and/or gap junctions were not observed. hFob osteoblasts were co-cultured with DU145 to establish a prostate cancer-collagen matrix barrier-bone cell metastasis model. Osteoblasts maintained their differentiated osteoblastic characteristics on one side of the collagen barrier, demonstrating high alkaline phosphatase, osteocalcin and insulin growth factor (IGF) activities. hFob cell growth was prominent adjacent to demineralized bone matrix particles (BMPs) embedded in type III collagen. The collagen matrix was deteriorated on the DU145 side of the collagen barrier. The DU145-collagen III-hFob model will allow an evaluation of the influence of the matrix on prostate cancer-bone cell interaction and regulation by growth factors.
authors.affiliation: Department of Biology, Howard University, Washington, DC 20059, USA.
authors.forename: C L
authors.initials: CL
authors.lastname: Macias
authors.forename: K
authors.initials: K
authors.lastname: Williams
authors.forename: B
authors.initials: B
authors.lastname: Baccetti
authors.forename: T
authors.initials: T
authors.lastname: Renieri
authors.forename: H
authors.initials: H
authors.lastname: Reddi
authors.forename: A
authors.initials: A
authors.lastname: Asseffa
authors.forename: V
authors.initials: V
authors.lastname: Hollis
authors.forename: F
authors.initials: F
authors.lastname: Grissom
authors.forename: W
authors.initials: W
authors.lastname: Anderson
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism; D002277:Carcinoma / Q000378:metabolism / Q000473:pathology* / Q000648:ultrastructure; D018920:Coculture Techniques; D024061:Collagen Type III / Q000378:metabolism*; D004247:DNA / Q000032:analysis; D005353:Fibronectins / Q000378:metabolism; D019073:HT29 Cells / Q000378:metabolism / Q000473:pathology* / Q000648:ultrastructure; D006801:Humans; D008297:Male; D008954:Models, Biological; D010006:Osteoblasts / Q000378:metabolism / Q000473:pathology* / Q000648:ultrastructure; D015675:Osteocalcin / Q000378:metabolism; D011471:Prostatic Neoplasms / Q000378:metabolism / Q000473:pathology* / Q000648:ultrastructure; D013002:Somatomedins / Q000378:metabolism
chemical_list: D024061:Collagen Type III; D005353:Fibronectins; D013002:Somatomedins; D015675:Osteocalcin; D004247:DNA; D000469:Alkaline Phosphatase