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International Urology and Nephrology

Erschienen in:

21.06.2023 | Nephrology - Original Paper

CircLARP1B promotes pyroptosis of high glucose-induced renal mesangial cells by regulating the miR-578/TLR4 axis

verfasst von: Yan Du, Yu Feng, Yu Cai, Chang Tian

Erschienen in: International Urology and Nephrology | Ausgabe 1/2024

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Abstract

Background

Diabetic nephropathy (DN) is a main cause of end-stage renal disease with high mortality. Circular RNAs (circRNAs) are associated with the pathogenesis of DN. This study aimed to explore the role of circLARP1B in DN.

Methods

The levels of circLARP1B, miR-578, TLR4 in DN and high glucose (HG)-treated cells using quantitative real-time PCR. Their relationship was analyzed using dual-luciferase reporter assay. The biological behaviors were assessed by MTT assay, EDU assay, flow cytometry, ELISA, and western blot.

Results

The results indicated that circLARP1B and TLR4 were highly expressed, and miR-578 was low expressed in patients with DN and HG-induced cells. Knockdown of circLARP1B promoted the proliferation and cell cycle, and inhibited pyroptosis and inflammation of HG-induced cells. CircLARP1B is a sponge of miR-578, which targets TLR4. Rescue experiments showed that inhibition of miR-578 reversed the effects of circLARP1B knockdown, while TLR4 reversed the effects of miR-578.

Conclusion

CircLARP1B/miR-578/TLR4 axis suppressed the proliferation, blocked cell cycle at the G0-G1 phase, promoted pyroptosis, and inflammatory factor release of renal mesangial cells induced by HG. The findings suggested that circLARP1B may be a target for the treatment of DN.

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Titel: CircLARP1B promotes pyroptosis of high glucose-induced renal mesangial cells by regulating the miR-578/TLR4 axis
verfasst von: Yan Du
Yu Feng
Yu Cai
Chang Tian
Publikationsdatum: 21.06.2023
Verlag: Springer Netherlands
Erschienen in: International Urology and Nephrology / Ausgabe 1/2024
Print ISSN: 0301-1623
Elektronische ISSN: 1573-2584
DOI: https://doi.org/10.1007/s11255-023-03672-4

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