title: Overexpression of KAI1 inhibits retinoblastoma metastasisin vitro.
abstract: The present study aimed to investigate the expression of cluster of differentiation 82 (KAI1), a gene involved in the suppression of tumor metastasis, in human retinoblastoma (RB) tissue and to study the effect of KAI1 expression on RB cell migration and invasion. KAI1 expression was examined in 26 patients with non-invasive and invasive retinoblastoma using reverse transcription-quantitative polymerase chain reaction and western blot analysis. A lentiviral vector containing KAI1 cDNA was used to transfect the two RB cell lines, HXO-Rb44-Gl and Y79. Following successful transfection, the migratory and invasive capacity of the two RB cell lines was evaluated using a Transwell®migration assay. KAI1 expression was observed to be downregulated in invasive RB compared to non-invasive RB. The migratory and invasive capacities of KAI1 transfected cell lines were significantly decreased compared to those of the control cells. KAI1 may be involved in retinoblastoma metastasis, and increased expression of KAI1 significantly inhibits the metastatic ability of RB cellsin vitro.
authors.affiliation: Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.
authors.forename: Hui
authors.initials: H
authors.lastname: Yan
authors.affiliation: Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.
authors.forename: Xunda
authors.initials: X
authors.lastname: Ji
authors.affiliation: Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Ophthalmology, Tongji University Affiliated Yangpu Hospital, Shanghai 200090, P.R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Ophthalmology, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, P.R. China.
authors.forename: Peiquan
authors.initials: P
authors.lastname: Zhao
keywords: cluster of differentiation 82; invasion; metastasis; migration; retinoblastoma