Short communication, Note
https://doi.org/10.21860/medflum2021_365329
Different expression of lumican glycoforms in non-metastatic and metastatic laryngeal squamous cell carcinoma
Iris Car
; University of Rijeka, Department of Biotechnology, Centre for High-throughput technologies, Rijeka, Croatia
Sarah Visentin
; University of Rijeka, Department of Biotechnology, Centre for High-throughput technologies, Rijeka, Croatia
Davorin Đanić
; University Josip Juraj Strossmayer of Osijek, Faculty of dental medicine and health, Osijek, Croatia
Marko Klobučar
; University of Rijeka, Department of Biotechnology, Centre for High-throughput technologies, Rijeka, Croatia
Abstract
Objective: Association of altered growth factor receptors-mediated intracellular pathways and biological processes associated with extracellular matrix composition and structure in laryngeal squamous cell carcinoma (LSCC) were described previously. In particular, the expression and glycosylation of important extracellular matrix molecules (ECM) such as small leucine rich proteoglycan lumican, may be generally associated with disrupted extracellular matrix integrity and inflammation processes which have a role in tumour invasiveness. In this study, the relative expression of different lumican glycoforms were evaluated in primary tumour and tumour-unaffected tissue samples of ten patients with metastatic and ten non-metastatic LSCC by Western blot and 2D immunoblot analysis. Materials and methods: Tissue samples from the primary tumours and paired adjacent non-tumour tissues were surgically resected from ten untreated LSCC patients with non-metastatic disease and ten LSCC patients with lymph nodes metastases. The relative expression of different lumican glycoforms in primary tumours and paired adjacent non-tumour tissues were evaluated by Western blot and 2D immunoblot analysis. Results: Results of Western blot analysis have revealed elevated expression of the moderately glycosylated lumican form in metastatic (p<0,05) and non-metastatic primary tumour tissues in comparison with tumour unaffected tissues. In addition, moderately glycosylated form of lumican with negatively charged oligosaccharide residues in the N-glycan molecule part was exclusively determined in metastatic primary tumour tissues by 2D immunoblot analysis. Conclusion: We demonstrated elevated expression of the moderately glycosylated lumican form with negatively charged oligosaccharide residues in the N-glycan portion exclusively in primary laryngeal squamous cell carcinoma from patients with metastatic disease.
Keywords
biological function; glycosylation; laryngeal squamous cell carcinoma; lumican; metastases; overexpression
Hrčak ID:
251267
URI
Publication date:
1.3.2021.
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