Back to Search
Start Over
Overexpression Cathepsin D Contributes to Perineural Invasion of Salivary Adenoid Cystic Carcinoma
- Source :
- Frontiers in Oncology, Vol 8 (2018), Frontiers in Oncology
- Publication Year :
- 2018
- Publisher :
- Frontiers Media S.A., 2018.
-
Abstract
- Objective: Cathepsin D (CTSD) is a pivotal orchestrator in the occurrence and development of tumors. Recently, CTSD was detected in salivary adenoid cystic carcinoma (SACC). However, its functional role in perineural invasion (PNI) of SACC remained elusive. We conducted the present study to detect the expression of CTSD in SACC, analyze the correlation between CTSD expression and prognosis of SACC patients and elucidate the role of CTSD in occurrence of PNI in SACC to lay the foundation for further studies.Methods: Immunohistochemical analysis was conducted to assess CTSD and Ki67 expression in 158 SACC samples and 20 normal salivary gland samples adjacent to carcinoma. Meanwhile, the correlation between CTSD and PNI of SACC specimens was analyzed using Wilcoxon test. QRT-PCR, immunofluorescence and western blot analysis were used to examine the levels of CTSD mRNA and protein in SACC-LM cell line. SiRNA-mediated CTSD silence was performed. Scratch wound healing assay, transwell invasion assay and DRG co-culture assay of PNI was used to detect the ability of migration, invasion and PNI. FITC-phalloidin was used to detect cytoskeletal organization.Results: Our data demonstrated that the positive expression of CTSD was observed in 74.1% (117/158) of SACC cases, and the expression of CTSD was significantly correlated with the PNI (p < 0.05). The ability of migration, invasion, and PNI could be inhibited significantly by siRNA-mediated CTSD silence (p < 0.01). Furthermore, siRNA-mediated CTSD silence inhibited cytoskeletal organization and pseudo foot formation in SACC-LM cells.Conclusion: Our results suggested that an association between PNI and expression of CTSD existed. CTSD may promote PNI of SACC accompanied by cytoskeletal organization and pseudo foot formation.
- Subjects :
- 0301 basic medicine
salivary adenoid cystic carcinoma (SACC)
Cancer Research
Adenoid cystic carcinoma
Perineural invasion
Cathepsin D
Biology
lcsh:RC254-282
cathepsin D (CTSD)
03 medical and health sciences
0302 clinical medicine
Gentamicin protection assay
Western blot
medicine
Carcinoma
cytoskeletal organization
Original Research
Salivary gland
medicine.diagnostic_test
Correction
medicine.disease
lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens
030104 developmental biology
medicine.anatomical_structure
Oncology
030220 oncology & carcinogenesis
Cancer research
Immunohistochemistry
perineural invasion (PNI)
invasion frontier
Subjects
Details
- Language :
- English
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Frontiers in Oncology
- Accession number :
- edsair.doi.dedup.....4163ff056485710c4e918b23842aa06c