MAO Jing-yu,GAO Fei,ZHANG Xin-xin,et al.Effect and Mechanism of Yishen Tongluo Prescription on miR-514a-5p/TNFSF15 Signaling Pathway in MN Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(02):121-130.
MAO Jing-yu,GAO Fei,ZHANG Xin-xin,et al.Effect and Mechanism of Yishen Tongluo Prescription on miR-514a-5p/TNFSF15 Signaling Pathway in MN Rats[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(02):121-130. DOI: 10.13422/j.cnki.syfjx.20212407.
Effect and Mechanism of Yishen Tongluo Prescription on miR-514a-5p/TNFSF15 Signaling Pathway in MN Rats
To explore the molecular mechanism of Yishen Tongluo prescription in inhibiting the apoptosis of glomerular podocytes in rats with membranous nephropathy (MN) based on the miR-514a-5p/tumor necrosis factor superfamily member 15 (TNFSF15) signaling pathway.
Method
2
Eighty SD rats were pre-immunized and injected with cationized bovine serum albumin (C-BSA) into the tail vein for inducing MN, and the successfully modeled MN rats were randomly divided into the model group, high-, middle-, and low-dose (26.44, 13.22, 6.61 g·kg
-1
) Yishen Tongluo prescription groups, and benazepril (10 mg·kg
-1
) group, with 10 rats in each group, and another 20 healthy rats were classified into the normal group. Rats in each group were gavaged with the corresponding drugs, once a day, for four successive weeks. After the administration, the 24-hour urine total protein (UTP) level, serum total cholesterol (TC), triglyceride (TG), albumin (ALB), creatinine (SCr), and urea nitrogen (BUN) levels were measured. The miR-514a-5p and TNFSF15 mRNA expression levels in the rat kidney tissue were detected by real-time fluorescence quantitative polymerase chain reaction (Real-time PCR), and the expression levels of podocyte marker proteins Nephrin, Podocin, Podocalyxin, Synaptopodin, TNFSF15, and podocyte apoptosis-related proteins B lymphocytoma-2 (Bcl-2)-related X protein (Bax), Bcl-2-associated death promoter (BAD) protein, and B-cell lymphoma-extra large (Bcl-XL) by immunohistochemistry (IHC). Western blot was used to detect the expression levels of TNFSF15, Bax, BAD, Bcl-2, and BCL-XL in the rat kidney tissue. The apoptosis rate of rat kidney tissue was measured using the in situ end labeling method (Tunnel).
Result
2
Compared with the normal group, the level of miR-514a-5p in the kidney tissue was significantly reduced (
P
<
0.05), and the TNFSF15 mRNA expression was significantly increased (
P
<
0.05). The expression levels of podocyte marker proteins Nephrin, Podocin, Podocalyxin, and Synaptopodin were down-regulated (
P
<
0.05). The protein expression levels of TNFSF15, Bax, and BAD were increased (
P
<
0.05), whereas the Bcl-2 and Bcl-XL protein expression levels were decreased (
P
<
0.05). The number of apoptotic cells diminished significantly (
P
<
0.05). Compared with the model group, the level of miR-514a-5p in the kidney tissue was significantly increased (
P
<
0.05), while the level of TNFSF15 mRNA was significantly decreased (
P
<
0.05). The expression levels of podocyte marker proteins Nephrin, Podocin, podocalyxin, and Synaptopodin were up-regulated (
P
<
0.05), whereas the TNFSF15, Bax, and BAD protein expression levels were down-regulated (
P
<
0.05). Bcl-2 and Bcl-XL protein expression levels rose (
P
<
0.05). The number of apoptotic cells significantly decreased (
P
<
0.05).
Conclusion
2
Yishen Tongluo prescription reduces the apoptosis of rat kidney podocytes and alleviates the kidney injury of MN rats through the miR-514a-5p/TNFSF15 signaling pathway.
关键词
Keywords
references
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