1
|
Sun X, Wu T, Yang Z, Chen S, Zhao Z, Hu C, Wu S, Wu J, Mao Y, Liu J, Guo C, Cao G, Xu X, Huang S, Liang G. Regulatory role of PDK1 via integrated gene analysis of mitochondria-immune response in periodontitis. Gene 2024; 918:148476. [PMID: 38657876 DOI: 10.1016/j.gene.2024.148476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024]
Abstract
AIMS To investigate the association between mitochondrial events and immune response in periodontitis and related regulatory genes. MAIN METHODS Gene expression profiles in gingival tissues were retrieved from the Gene Expression Omnibus. Mitochondria-immune response-related differentially expressed genes (MIR-DEGs) between the healthy and periodontitis samples were determined. WGCNA, GO, and KEGG were used to investigate the function and the enriched pathways of MIR-DEGs. The correlation between MIR-DEGs expression and clinical probing pocket depth was analyzed. The MIR-DEGs were further identified and verified in animal samples. A periodontitis model was established in C57BL/6 mice with silk ligation. Micro-computed tomography was used to assess alveolar bone loss. Western blot, quantitative real-time polymerase chain reaction, and immunohistochemical analyses further validated the differential expression of the MIR-DEGs. KEY FINDINGS A total of ten MIR-DEGs (CYP24A1, PRDX4, GLDC, PDK1, BCL2A1, CBR3, ARMCX3, BNIP3, IFI27, and UNG) were identified, the expression of which could effectively distinguish patients with periodontitis from the healthy controls. Enhanced immune response was detected in the periodontitis group with that in the healthy controls, especially in B cells. PDK1 was a critical MIR-DEG correlated with B cell immune response and clinical periodontal probing pocket depth. Both animal and clinical periodontal samples presented higher gene and protein expression of PDK1 than the control samples. Additionally, PDK1 colocalized with B cells in both animal and clinical periodontal tissues. SIGNIFICANCE Mitochondria participate in the regulation of the immune response in periodontitis. PDK1 may be the key mitochondria-related gene regulating B-cell immune response in periodontitis.
Collapse
Affiliation(s)
- Xiaoyu Sun
- Affiliated Yongkang First People's Hospital and School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang 310012, China; Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China; Department of Periodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Tong Wu
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Zhan Yang
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Shuhong Chen
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Zheyu Zhao
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Chaoming Hu
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Shengzhuang Wu
- School and Hospital of Stomatology, Hangzhou Medical University, Wenzhou, China
| | - Jiayu Wu
- School of Medicine, Jiujiang University, 320 Xunyang East Road, Jiujiang City, Jiangxi Province 332000, China
| | - Yixin Mao
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China; Department of Prosthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Jiefan Liu
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China; Department of Oral and Maxillofacial Surgery/Pathology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Chen Guo
- School/Hospital of Stomatology, Lanzhou University, Lanzhou 730000, China
| | - Gang Cao
- School of Pharmacy, Zhejiang Chinese Medical University, No. 548 Binwen Road, Hangzhou, Zhejiang 310053, China
| | - Xiangwei Xu
- Affiliated Yongkang First People's Hospital and School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang 310012, China.
| | - Shengbin Huang
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China.
| | - Guang Liang
- Affiliated Yongkang First People's Hospital and School of Pharmacy, Hangzhou Medical College, Hangzhou, Zhejiang 310012, China.
| |
Collapse
|
2
|
Guzeldemir-Akcakanat E, Sunnetci-Akkoyunlu D, Balta-Uysal VM, Özer T, Işik EB, Cine N. Differentially expressed miRNAs associated with generalized aggressive periodontitis. Clin Oral Investig 2023; 28:7. [PMID: 38123758 DOI: 10.1007/s00784-023-05404-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 12/02/2023] [Indexed: 12/23/2023]
Abstract
OBJECTIVE This study aimed to investigate miRNA expression profiles in individuals with periodontitis which is a chronic inflammatory condition affecting the integrity of the periodontal attachment. miRNAs play a crucial role in gene regulation through various mechanisms, making them potential diagnostic markers and therapeutic targets for various diseases. MATERIALS AND METHODS A total of 25 individuals with aggressive periodontitis and 25 controls were included in the study. Gingival tissues were collected for miRNA isolation and cDNA synthesis. miRNAs associated with periodontitis, including hsa-miR-185-5p, hsa-miR-17, hs-miR-146a, hs-miR-146b, hs-miR-155, hs-miR-203, hs-miR-205, hs-miR-223, and hsa-miR-21-3p, were analyzed using a combination of miRTarBase database analysis and literature mining was performed. Real-time PCR was used to assess the expression patterns of the target miRNAs, and the data were analyzed using the REST program. RESULTS The study revealed upregulated expression levels of hsa-miR-223-3p, hsa-miR-203b-5p, hsa-miR-146a-5p, hsa-miR-146b-5p, and hsa-miR-155-5p in individuals with periodontitis. Conversely, downregulated expression was observed for hsa-miR-185-5p, hsa-miR-21-3p, and hsa-miR-17-3p. CONCLUSION The findings suggest significant differences in the expression of specific miRNAs associated with inflammation in periodontitis. MZB1 acts as a hormone-regulated adipokine/pro-inflammatory cytokine, driving chronic inflammation and influencing cellular expansion. Predominantly expressed in marginal zone and B1 B cells, specialized subsets that respond rapidly to infections, MZB1 impacts immune protein synthesis and immune cell maturation, notably targeting microRNA-185 to potentially impede T cell development. Further research is needed to elucidate the functional significance and potential implications of these miRNAs. CLINICAL RELEVANCE miRNAs regulate the expression of target genes by finely tuning protein expression levels. The current findings provide compelling evidence of notable variations in the expression levels of specific miRNAs associated with inflammation in individuals affected by periodontitis; hence, miRNAs hold promise as potential therapeutic targets for periodontitis.
Collapse
Affiliation(s)
- Esra Guzeldemir-Akcakanat
- Department of Periodontology, Faculty of Dentistry, Kocaeli University, 41190 Basiskele, Kocaeli, Turkey.
| | | | - V Merve Balta-Uysal
- Department of Periodontology, Faculty of Dentistry, Kocaeli University, 41190 Basiskele, Kocaeli, Turkey
| | - Tolgahan Özer
- Department of Medical Genetics, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Elif Büşra Işik
- Department of Medical Genetics, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| | - Naci Cine
- Department of Medical Genetics, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey
| |
Collapse
|
3
|
Geary B, Sun B, Tilvawala RR, Barasa L, Tsoyi K, Rosas IO, Thompson PR, Ho IC. Peptidylarginine deiminase 2 citrullinates MZB1 and promotes the secretion of IgM and IgA. Front Immunol 2023; 14:1290585. [PMID: 38094295 PMCID: PMC10716219 DOI: 10.3389/fimmu.2023.1290585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/07/2023] [Indexed: 12/18/2023] Open
Abstract
Introduction MZB1 is an endoplasmic reticulum residential protein preferentially expressed in plasma cells, marginal zone and B1 B cells. Recent studies on murine B cells show that it interacts with the tail piece of IgM and IgA heavy chain and promotes the secretion of these two classes of immunoglobulin. However, its role in primary human B cells has yet to be determined and how its function is regulated is still unknown. The conversion of peptidylarginine to peptidylcitrulline, also known as citrullination, by peptidylarginine deiminases (PADs) can critically influence the function of proteins in immune cells, such as neutrophils and T cells; however, the role of PADs in B cells remains to be elucidated. Method An unbiased analysis of human lung citrullinome was conducted to identify citrullinated proteins that are enriched in several chronic lung diseases, including rheumatoid arthritis-associated interstitial lung disease (RA-ILD), chronic obstructive pulmonary disease, and idiopathic pulmonary fibrosis, compared to healthy controls. Mass spectrometry, site-specific mutagenesis, and western blotting were used to confirm the citrullination of candidate proteins. Their citrullination was suppressed by pharmacological inhibition or genetic ablation of PAD2 and the impact of their citrullination on the function and differentiation of human B cells was examined with enzyme-linked immunosorbent assay, flow cytometry, and co-immunoprecipitation. Results Citrullinated MZB1 was preferentially enriched in RA-ILD but not in other chronic lung diseases. MZB1 was a substrate of PAD2 and was citrullinated during the differentiation of human plasmablasts. Ablation or pharmacological inhibition of PAD2 in primary human B cells attenuated the secretion of IgM and IgA but not IgG or the differentiation of IgM or IgA-expressing plasmablasts, recapitulating the effect of ablating MZB1. Furthermore, the physical interaction between endogenous MZB1 and IgM/IgA was attenuated by pharmacological inhibition of PAD2. Discussion Our data confirm the function of MZB1 in primary human plasmablasts and suggest that PAD2 promotes IgM/IgA secretion by citrullinating MZB1, thereby contributing to the pathogenesis of rheumatoid arthritis and RA-ILD.
Collapse
Affiliation(s)
- Benjamin Geary
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, United States
| | - Bo Sun
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, United States
- Department of Medicine, Harvard Medical School, Boston, MA, United States
| | - Ronak R. Tilvawala
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA, United States
| | - Leonard Barasa
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA, United States
| | - Konstantin Tsoyi
- Pulmonary, Critical Care and Sleep Medicine Section, Baylor College of Medicine, Houston, TX, United States
| | - Ivan O. Rosas
- Pulmonary, Critical Care and Sleep Medicine Section, Baylor College of Medicine, Houston, TX, United States
| | - Paul R. Thompson
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA, United States
| | - I-Cheng Ho
- Division of Rheumatology, Inflammation, and Immunity, Department of Medicine, Brigham and Women’s Hospital, Boston, MA, United States
- Department of Medicine, Harvard Medical School, Boston, MA, United States
| |
Collapse
|