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A High Output Method to Isolate Cerebral Pericytes from Mouse
Published on: January 14, 2020
Pericyst may be a new pharmacological and therapeutic target for hydatid disease
Xiang-Wei Wu1, Xue-Ling Chen, Shi-Jie Zhang
1Department of Hepatobiliary Surgery, School of Medicine, Shihezi University, Shihezi, Xinjiang 832000, China.
Background:
Most hydatid cysts with calcified walls are biologically and clinically silent and inactive. Transforming growth factor-beta 1 (TGF-β1) plays a critical role in the calcification process of cells. The aim of this study was to assess the effect of modulating TGF-β1 signaling on the calcification of hydatid cysts.
Methods:
Pericyst cells isolated from hepatic hydatid cysts were cultured with osteogenic media. These cells were assessed for alkaline phosphatase activity and mineralization capacity using Alizarin Red staining. Cells were also treated with recombinant human TGF-β1 and TGF-β inhibitor, and the expression profiles of osteoblast markers (RUNX2, osterix, and osteocalcin) were analyzed using Western blotting. The effects of inhibiting TGF-β1 signaling on calcification of pericyst walls were assessed using different doses of TGF-β inhibitor for 7 weeks in a preclinical disease model of liver cystic echinococcosis.
Results:
Cells within the pericyst displayed high levels of alkaline phosphatase activity and mineralized nodule formation, as induced by osteogenic media. These activities, as well as expression profiles of osteoblast markers (RUNX2, osterix, and osteocalcin) could be inhibited by addition of recombinant human TGF-β1 (rhTGF-β1) and enhanced by TGF-β inhibitor. In the animal model of cystic echinococcosis, inhibition of TGF-β1 signaling increased calcification of the pericyst wall, which was associated with decreased cyst load index and lower viability of protoscoleces.
Conclusions:
Cells within the pericysts adopt an osteoblast-like phenotype and have osteogenic potential. Inhibition of TGF-β1 signaling increases hydatid cyst calcification. Pharmacological modulation of calcification in pericysts may be a new therapeutic target in the treatment of hydatid disease.
Insights
Inhibition of transforming growth factor-beta 1 (TGF-β1) signaling promotes hydatid cyst calcification. This finding suggests targeting TGF-β1 may offer a new therapeutic strategy for hydatid disease.
Area of Science:
- Parasitology
- Cell Biology
- Biochemistry
Background:
- Hydatid cysts with calcified walls are typically inactive.
- Transforming growth factor-beta 1 (TGF-β1) is crucial in cellular calcification.
- This study investigates TGF-β1's role in hydatid cyst calcification.
Purpose of the Study:
- To assess the impact of modulating TGF-β1 signaling on hydatid cyst calcification.
- To explore potential therapeutic targets for hydatid disease.
Main Methods:
- Cultured pericyst cells from hepatic hydatid cysts with osteogenic media.
- Analyzed alkaline phosphatase activity and mineralization (Alizarin Red staining).
- Investigated effects of TGF-β1 and its inhibitor on osteoblast marker expression (Western blotting) and pericyst wall calcification in an animal model.
Main Results:
- Pericyst cells exhibited osteoblast-like activity and mineralization.
- TGF-β1 inhibited these activities, while TGF-β1 inhibitor enhanced them.
- Inhibition of TGF-β1 signaling in vivo increased pericyst calcification, reduced cyst load, and decreased protoscolex viability.
Conclusions:
- Pericyst cells possess osteogenic potential and adopt an osteoblast-like phenotype.
- Inhibiting TGF-β1 signaling enhances hydatid cyst calcification.
- Pharmacological targeting of pericyst calcification presents a novel therapeutic avenue for hydatid disease.
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