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Analysis of proteoglycan expression in human dental pulp
Ana Carla Raphaelli Nahás-Scocate1, Gabrielle Ferrante Alves de Moraes2, Helena Bonciani Nader2
1Departamento de Bioquimica da Universidade Federal de São Paulo, Disciplina de Biologia Molecular, Rua 3 de Maio 100, 04044-020, São Paulo, Brazil; Universidade Guarulhos, Praça Tereza Cristina, 229, Guarulhos, SP, 07023-070, Brazil.
Archives of Oral Biology
|March 24, 2018
Summary
This study investigated proteoglycan expression in human dental pulp, finding lumican and versican present in both deciduous and permanent teeth. Lumican showed higher gene expression, and glypican-3 was significantly more abundant in permanent dental pulp.
Area of Science:
- Biochemistry
- Molecular Biology
- Dental Research
Background:
- Proteoglycans are crucial extracellular matrix components with diverse cellular functions.
- Their presence and specific roles in human dental pulp remain underexplored.
- Understanding proteoglycan expression is key to elucidating dental pulp biology and pathology.
Purpose of the Study:
- To investigate the gene and protein expression of lumican, versican, and glypican proteoglycans in human deciduous and permanent dental pulp.
- To quantitatively compare the expression levels of these proteoglycans between deciduous and permanent dental pulp tissues.
Main Methods:
- Quantitative real-time polymerase chain reaction (q-PCR) was employed to assess gene expression of lumican, versican, and glypicans (1-6).
- Immunofluorescence staining was utilized to detect and localize lumican and versican protein expression in dental pulp sections.
- Statistical analysis, including t-tests and ANOVA, was performed to compare expression levels between deciduous and permanent pulp groups.
Main Results:
- Lumican and versican proteoglycans were expressed in both deciduous and permanent human dental pulp.
- Lumican gene expression was significantly predominant (P=0.03) compared to versican.
- Glypican-3 showed significantly higher expression in permanent pulps (P<0.001), while glypican-2 was not detected.
Conclusions:
- Lumican gene expression is higher than versican in human dental pulp.
- Glypican-3 is the most significantly expressed glypican isoform in permanent dental pulp compared to deciduous.
- These findings contribute to understanding the molecular composition of human dental pulp.
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