Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Pivot Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Target Concepts:
Gene/Protein
Disease
Symptom
Drug
Enzyme
Compound
Query: UMLS:C0037116 (
silicosis
)
1,822
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
Rationale:
Phagocytosis of silicon dioxide (SiO
2
) into lung cells causes an inflammatory cascade that results in fibroblast proliferation and migration, followed by fibrosis. Circular RNAs (circRNAs) are a subclass of non-coding RNAs detected within mammalian cells; however, researchers have not determined whether circRNAs are involved in the pathophysiological process of
silicosis
. The upstream molecular mechanisms and functional effects on cell apoptosis, proliferation and migration were investigated to elucidate the role of circRNAs in SiO
2
-induced inflammation in pulmonary macrophages.
Methods:
Primary cultures of alveolar macrophages from healthy donors and patients as well as the RAW264.7 macrophage cell line were used to explore the functions of circHECTD1 (HECT domain E3
ubiquitin
protein ligase 1) in macrophage activation.
Results:
The results of the experiments indicated that 1) SiO
2
concomitantly decreased circHECTD1 levels and increased HECTD1 protein expression; 2) circHECTD1 and HECTD1 were involved in SiO
2
-induced macrophage activation via ubiquitination; and 3) SiO
2
-activated macrophages promoted fibroblast proliferation and migration via the circHECTD1/HECTD1 pathway. Tissue samples from
silicosis
patients confirmed the upregulation of HECTD1.
Conclusions:
Our study elucidated a link between SiO
2
-induced macrophage activation and the circHECTD1/HECTD1 pathway, thereby providing new insight into the potential use of HECTD1 in the development of novel therapeutic strategies for treating
silicosis
.
...
PMID:circRNA Mediates Silica-Induced Macrophage Activation Via HECTD1/ZC3H12A-Dependent Ubiquitination. 2929 Aug 28
