ArticleGraefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie2016
Bit1-a potential positive regulator of epithelial-mesenchymal transition in lens epithelial cells.
Article in Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 10 citations in OpenAlex.
- Pathogenic roles of the IMNEPD-associated PTRH2 mutants in aggravating mitochondrial dynamics and its rescue.Molecular medicine (Cambridge, Mass.) · 2026Article
- Bit1 is involved in regulation between integrin and TGFβ signaling in lens epithelial cells.Cell cycle (Georgetown, Tex.) · 2022Article
- PTRH2: an adhesion regulated molecular switch at the nexus of life, death, and differentiation.Cell death discovery · 2020Review
- The effects of c-Src kinase on EMT signaling pathway in human lens epithelial cells associated with lens diseases.BMC ophthalmology · 2019Article
- Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells.Molecular medicine reports · 2018Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposePosterior capsule opacification (PCO) is a common postoperative complication of cataract surgery. Epithelial-mesenchymal transition (EMT) of lens epithelial cells (LECs) is an important initial step of PCO pathogenesis. We have previously shown that Bit1 expresses in rat LECs. In this study, we aim to investigate the role of Bit1 in the EMT of human LECs.
methodsThe expression of Bit1 was firstly detected in human PCO-attached LECs and human lens cell line SRA01/04 by real-time PCR and immunofluorescence staining. The proliferation and migration of Bit1 knockdown SRA01/04 cells were evaluated by cell counting, wound-healing assay, and transwell migration assay. The EMT of LECs was triggered by TGF-β2, and then the effect of Bit1 on EMT with a key biomarker of α-smooth muscle actin (α-SMA) was analyzed by siRNA knockdown assay, and the reversal of EMT was validated by real-time PCR and western blot.
resultsBit1 was obviously augmented in LECs derived from PCO tissues and Bit1 expressed with high levels in the cytoplasm of cultured SRA01/04 cells. Cell proliferation, invasion, and migration, as well as α-SMA expression, were significantly decreased in Bit1 knockdown SRA01/04 cells. While TGF-β2 elevated Bit1 and α-SMA expression levels in a dose-dependent manner, with peak levels at 10 ng/ml of TGF-β2 treatment, suppression of Bit1 in SRA01/04 cells reversed the EMT process. TGF-β2 induced elevation of α-SMA expression level, as well as migration, and invasion abilities were all suppressed by Bit1 deficiency.
conclusionsThese findings reveal that Bit1 promotes TGF-β2 induced α-SMA expression and acts as an positive regulator of EMT. Suppressing Bit1 inhibits the proliferation, migration, and EMT of LECs. Bit1 may be a potential novel therapeutic target for the prevention and treatment of PCO.
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