title: Expression of the reversion-inducing cysteine-rich protein with Kazal motifs and matrix metalloproteinase-14 in neuroblastoma and the role in tumour metastasis.
abstract: Neuroblastoma is the most common malignant tumour in infancy; the reversion-inducing cysteine-rich protein with Kazal motifs gene (RECK) is a tumour suppressor gene. Previous studies show that RECK inhibits tumour invasion and metastasis through negative regulation of the matrix metalloproteinase (MMP)-2, MMP-9 and MMP-14. Therefore, we wanted to detect the expression of RECK and MMP-14 in neuroblastomas to assess the correlation between the expression levels of these proteins, and to investigate the roles in the metastasis and development of the tumour. PV-6000 immunohistochemistry method was used to detect the expression levels of RECK and MMP-14 in 36 samples of neuroblastoma tissue. Samples from paraffin wax-embedded specimens and the complete clinicopathological data of 36 neuroblastoma and 10 ganglioneuroma patients were collected. The rate of expression of the RECK protein in the neuroblastoma was low (16.7%). Furthermore, it reduced with the increase in the invasive depth and distant metastasis (P = 0.015; P < 0.05). The rate of expression of the MMP-14 protein in the neuroblastoma was high (58.3%) and increased with the increase in the extent of invasive depth and distant metastasis (P = 0.002; P < 0.05). The expression of the RECK protein correlated negatively with that of MMP-14 (r = -0.418; P < 0.05). Low levels of the RECK protein are expressed in the neuroblastoma, while the MMP-14 protein is expressed at high levels. The RECK and MMP-14 proteins may serve as markers in the estimation of the extent of metastasis and dissemination of the neuroblastoma.
authors.affiliation: Department of Pediatric Surgery, Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China. qian.dong6@gmail.com
authors.forename: Qian
authors.initials: Q
authors.lastname: Dong
authors.forename: Dan
authors.initials: D
authors.lastname: Yu
authors.forename: Chuan-Min
authors.initials: CM
authors.lastname: Yang
authors.forename: Buxian
authors.initials: B
authors.lastname: Jiang
authors.forename: Hong
authors.initials: H
authors.lastname: Zhang
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D058851:GPI-Linked Proteins; D005729:Ganglioneuroma / Q000201:enzymology* / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D007223:Infant; D008207:Lymphatic Metastasis; D008297:Male; D053511:Matrix Metalloproteinase 14 / Q000032:analysis*; D008562:Membrane Glycoproteins / Q000032:analysis*; D009361:Neoplasm Invasiveness; D009367:Neoplasm Staging; D009447:Neuroblastoma / Q000201:enzymology* / Q000556:secondary; D016612:Paraffin Embedding
chemical_list: D014408:Biomarkers, Tumor; D058851:GPI-Linked Proteins; D008562:Membrane Glycoproteins; C115460:RECK protein, human; C507086:MMP14 protein, human; D053511:Matrix Metalloproteinase 14