title: Bone morphogenetic protein-2 levels are elevated in the patients with gastric cancer and correlate with disease progression.
abstract: Bone morphogenetic protein-2 (BMP-2) was reported to enhance migration, invasion, and metastasis at the various types of cancer cells. The purpose of this study is to identify the role of BMP-2 in progression of gastric cancer. Forty-four patients with operable gastric cancer were enrolled. Also, twenty healthy volunteers were enrolled as control group. All patients received gastrectomy with D2 lymphadenectomy, and surgical staging was performed. Whole blood was obtained preoperatively in all patients, and serum BMP-2 levels were quantified by commercially available ELISA kit. Immunohistochemical stain for BMP-2 in all gastric cancer tissues was performed using tissue microarray. All patients showed increased serum BMP-2 levels compared with control group, when upper normal limit was defined as the mean of control serum level+2×standard deviation. The mean serum BMP-2 level of lymph node positive group was significantly elevated than that of lymph node-negative group (382.7 pg/ml, 95% CI 341.99-423.4 pg/ml vs 211.69 pg/ml, 95% CI 191.09-232.29 pg/ml, P<0.001). The serum BMP-2 was strongly correlated with the depth of invasion (T stage) and the extent of regional lymph node involvement (N stage) (r=0.662, P<0.001 and r=0.831, P<0.001, respectively). Moreover, the serum BMP-2 was correlated with the grade of tumor histology(r=0.421, P=0.008). Immunohistochemical stain showed the specific expression of BMP-2 in cancer cells compared with normal gastric mucosa. In conclusion, serum BMP-2 is associated with progression from early localized gastric cancer to locally advanced gastric cancer.
authors.affiliation: Division of Hematology/Oncology, Department of Internal Medicine, College of Medicine, Korea University, Guro Hospital, 80 Guro-Dong, Guro-Gu, Seoul, 152-703, Korea.
authors.forename: Yong
authors.initials: Y
authors.lastname: Park
authors.forename: Myoung Hee
authors.initials: MH
authors.lastname: Kang
authors.forename: Hee Yeon
authors.initials: HY
authors.lastname: Seo
authors.forename: Joong Min
authors.initials: JM
authors.lastname: Park
authors.forename: Chul Won
authors.initials: CW
authors.lastname: Choi
authors.forename: Yeul Hong
authors.initials: YH
authors.lastname: Kim
authors.forename: In Sun
authors.initials: IS
authors.lastname: Kim
authors.forename: Jun Suk
authors.initials: JS
authors.lastname: Kim
authors.forename: Sang Cheul
authors.initials: SC
authors.lastname: Oh
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D014408:Biomarkers, Tumor / Q000378:metabolism*; D055396:Bone Morphogenetic Protein 2 / Q000378:metabolism*; D018279:Carcinoma, Signet Ring Cell / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D016022:Case-Control Studies; D018450:Disease Progression; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005743:Gastrectomy; D005753:Gastric Mucosa / Q000378:metabolism* / Q000473:pathology; D006801:Humans; D007124:Immunoenzyme Techniques; D008197:Lymph Node Excision; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D013274:Stomach Neoplasms / Q000378:metabolism* / Q000473:pathology / Q000601:surgery; D015996:Survival Rate; D046888:Tissue Array Analysis
chemical_list: C525718:BMP2 protein, human; D014408:Biomarkers, Tumor; D055396:Bone Morphogenetic Protein 2