Loss of fibulin-2 expression is involved in the inhibition of breast cancer invasion and forms a new barrier in addition to the basement membrane

Previous studies have demonstrated that fibulin-2 may facilitate cancer cell invasion and metastasis during tumor progression. In the present study, immunohistochemical analyses of fibulin-2 and collagen IV expression in 35 patients with breast cancer were performed to define their localization and...

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Bibliographic Details
Published in:Oncology letters 2017-09, Vol.14 (3), p.2663-2668
Main Authors: Tan, Haosheng, Zhang, Jiaxin, Fu, Deyuan, Zhu, Yuxiang
Format: Article
Language:English
Subjects:
basement membrane
Breast cancer
Care and treatment
Cell adhesion & migration
Collagen
Consent
Development and progression
Enzymes
Extracellular matrix
fibulin-2
Gene expression
Genetic aspects
Health aspects
invasion
Lung cancer
Metastasis
Morphology
Oncology
Signal transduction
Signaling peptides and proteins
Studies
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Summary:Previous studies have demonstrated that fibulin-2 may facilitate cancer cell invasion and metastasis during tumor progression. In the present study, immunohistochemical analyses of fibulin-2 and collagen IV expression in 35 patients with breast cancer were performed to define their localization and association with breast cancer tissue. Fibulin-2 was revealed to be expressed in all tissues surrounding the breast ducts and blood vessels in normal breast tissue, while its expression was not integrated in invasive ductal carcinoma or terminal duct-lobular unit. In malignant breast tissue, collagen IV was integrated around the duct, while fibulin-2 was expressed around collagen IV and was incomplete. These results demonstrated that fibulin-2 was associated with breast cancer invasion. Fibulin-2 expression decreased prior to basement membrane (BM) degradation, indicating that fibulin-2 forms an additional barrier around the BM. Therefore, it was proposed that fibulin-2 composes the general BM, which differs from the traditional BM. These results provide insight into extracellular matrix components and the involvement of fibulin-2 in tumor invasion and metastasis. Fibulin-2 was involved in the process of breast cancer development. It performed an important role in prevention of cancer cell penetration and metastasis.
ISSN:1792-1074
1792-1082
DOI:10.3892/ol.2017.6539