title: HYAL1 overexpression is correlated with the malignant behavior of human breast cancer.
abstract: Extracellular matrix (ECM) is closely correlated with tumor cell growth, proliferation, metastasis and angiogenesis, etc. Hyaluronic acid (HA) is a component of the ECM, and hyaluronidase (HAase) is a HA-degrading endoglycosidase. Levels of HAase are elevated in many cancers. Hyaluronidase-1 (HYAL1) is the major tumor-derived HAase. In this study, we detected HYAL1 expression levels in breast cancer cells and tissues, and measured the amount HAase activity in breast cancer cells. Compared with nonmalignant breast cell line HBL-100 and normal breast tissues, HYAL1 were overexpressed in breast cancer cell lines MDA-MB-231, MCF-7, invasive duct cancer tissues and metastatic lymph nodes, respectively. Accordingly, the amount HAase activity in MDA-MB-231 and MCF-7 was higher than that in HBL-100. In addition, knockdown of HYAL1 expression in MDA-MB-231 and MCF-7 cells resulted in decreased cell growth, adhesion, invasion and angiogenesis potential. Meantime, the HYAL1 knockdown markedly inhibited breast cancer cell xenograft tumor growth and microvessel density. Further studies showed that the HYAL1, HYAL2 and HA were elevated in breast cancer, and HYAL1 could downregulate HA expression. In conclusion, HYAL1 may be a potential prognostic marker and therapeutic target in breast cancer.
authors.affiliation: Department of Endocrine Surgery, the First Affiliated Hospital, Chongqing Medical University, Chongqing, China.
authors.forename: Jin-Xiang
authors.initials: JX
authors.lastname: Tan
authors.forename: Xiao-Yi
authors.initials: XY
authors.lastname: Wang
authors.forename: Hong-Yuan
authors.initials: HY
authors.lastname: Li
authors.forename: Xin-Liang
authors.initials: XL
authors.lastname: Su
authors.forename: Liang
authors.initials: L
authors.lastname: Wang
authors.forename: Liang
authors.initials: L
authors.lastname: Ran
authors.forename: Ke
authors.initials: K
authors.lastname: Zheng
authors.forename: Guo-Sheng
authors.initials: GS
authors.lastname: Ren
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D014408:Biomarkers, Tumor / Q000378:metabolism*; D015153:Blotting, Western; D001943:Breast Neoplasms / Q000201:enzymology* / Q000473:pathology*; D018270:Carcinoma, Ductal, Breast / Q000201:enzymology* / Q000473:pathology*; D002448:Cell Adhesion; D002465:Cell Movement; D049109:Cell Proliferation; D018450:Disease Progression; D004730:Endothelium, Vascular / Q000166:cytology / Q000201:enzymology / Q000473:pathology; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005434:Flow Cytometry; D005455:Fluorescent Antibody Technique; D006801:Humans; D006821:Hyaluronoglucosaminidase / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism*; D007124:Immunoenzyme Techniques; D008207:Lymphatic Metastasis; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D012333:RNA, Messenger / Q000235:genetics; D034741:RNA, Small Interfering / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014407:Tumor Cells, Cultured; D014471:Umbilical Veins / Q000166:cytology / Q000201:enzymology / Q000473:pathology; D023041:Xenograft Model Antitumor Assays
chemical_list: D014408:Biomarkers, Tumor; D012333:RNA, Messenger; D034741:RNA, Small Interfering; D006821:Hyaluronoglucosaminidase