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Author Spotlight: Exploring the Role of Inflammation in the Co-occurrence of Primary Sjogren's Syndrome and Lung Adenocarcinoma
Published on: September 20, 2024
Involvement of microRNAs in the inflammatory pathways of pulmonary sarcoidosis
1Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Cracow, Poland.
Abstract:
Sarcoidosis is a multi-organ disease in which affected tissues are invaded with non-necrotizing granulomatous structures, mostly consisted of T helper 1 (Th1) cells and multinucleate giant cells. However, the etiology and pathogenesis of sarcoidosis is not known and the diagnosis is usually based on clinical examination involving radiography and histopathological analysis of biopsies of affected organs. Although the knowledge on the molecular background of sarcoidosis is limited, it seems that the important pathways involve transforming growth factor-β (TGF-β) and JAK/STAT, which may influence the interferon-γ (IFN-γ)-mediated signaling. Additionally, recently the role of microRNAs (miRNAs), the small non-coding RNA molecules, has been emphasized in different pathological conditions including autoimmune diseases. This review summarizes the current knowledge on the molecular pathways in the pathogenesis of sarcoidosis with a special emphasis on cytokines and miRNAs controlling immune cells proliferation and differentiation. Moreover, the possible role of T regulatory cells (CD4(+) CD25(+) FoxP3(+)) in this disease has been discussed.
Insights
Sarcoidosis pathogenesis involves T helper 1 cells and cytokines like transforming growth factor-β (TGF-β) and interferon-γ (IFN-γ). MicroRNAs (miRNAs) and T regulatory cells also play roles in this multi-organ disease.
Area of Science:
- Immunology
- Molecular Biology
- Pathology
Background:
- Sarcoidosis is a multi-organ disease characterized by non-necrotizing granulomas.
- The exact etiology and pathogenesis of sarcoidosis remain largely unknown.
- Diagnosis relies on clinical, radiological, and histopathological findings.
Purpose of the Study:
- To review current knowledge on molecular pathways in sarcoidosis pathogenesis.
- To emphasize the role of cytokines and microRNAs (miRNAs) in immune cell regulation.
- To discuss the potential involvement of T regulatory cells in sarcoidosis.
Main Methods:
- Literature review of molecular mechanisms in sarcoidosis.
- Focus on cytokines (e.g., TGF-β, IFN-γ) and signaling pathways (e.g., JAK/STAT).
- Exploration of microRNA (miRNA) involvement and T regulatory cell function.
Main Results:
- Key molecular pathways implicated include TGF-β and JAK/STAT signaling, influencing IFN-γ.
- MicroRNAs (miRNAs) are increasingly recognized for their role in immune-related pathologies.
- T regulatory cells (CD4(+) CD25(+) FoxP3(+)) may contribute to sarcoidosis pathogenesis.
Conclusions:
- Understanding sarcoidosis molecular pathways is crucial for diagnosis and treatment.
- Cytokines, miRNAs, and T regulatory cells are significant factors in sarcoidosis pathogenesis.
- Further research into these molecular players may reveal therapeutic targets.
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