RNA-sequencing study of peripheral blood monocytes in chronic periodontitis.
RNA-sequencing study of peripheral blood monocytes in chronic periodontitis.
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DOI：
10.1016/j.gene.2016.01.036
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发表时间：
2016-05-01
期刊：
影响因子：
3.5
通讯作者：
Deng HW
中科院分区：
文献类型：
--
作者：
Liu YZ;Maney P;Puri J;Zhou Y;Baddoo M;Strong M;Wang YP;Flemington E;Deng HW
Monocytes are an important cell type in chronic periodontitis (CP) by interacting with oral bacteria and mediating host immune response. The aim of this study was to reveal new functional genes and pathways for CP at monocyte transcriptomic level. We performed an RNA-sequencing (RNA-seq) study of peripheral blood monocytes (PBMs) in 5 non-smoking moderate to severe CP (case) individuals vs. 5 controls. We took advantage of a microarray study of periodontitis to support our findings. We also performed pathway-based analysis on the identified differentially expressed (DEx) transcripts/isoforms using DAVID (Database for Annotation, Visualization and Integrated Discovery). Through differential expression analyses at both whole gene (or whole non-coding RNA) and isoform levels, we identified 380 DEx transcripts and 5,955 DEx isoforms with a PPEE (posterior probability of equal expression) of < 0.05. Pervasive up-regulation of transcripts at isoform level in CP vs. control individuals were observed, suggesting a more functionally active monocyte transcriptome for CP. By comparing with the microarray dataset, we identified several CP-associated novel genes (e.g., FACR and CUX1) that have functions to interact with invading microorganisms or enhance TNF production on lipopolysaccharide stimulation. DAVID analysis of both the RNA-seq and the microarray datasets leads to converging evidence supporting “endocytosis”, “cytokine production” and “apoptosis” as significant biological processes in CP. As the first RNA-seq study of PBMs for CP, this study provided novel findings at both gene (e.g., FCAR and CUX1) and biological process level. The findings will contribute to better understanding of CP disease mechanisms.
