CHEN Yan-xu,JIN Zhi-sheng,HE Liu,et al.Effect of Hedysarum Polysaccharides on Bcl-2/Caspase-3 Signaling Pathway of Schwann Cells Cultured in High Glucose[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(06):71-78.
CHEN Yan-xu,JIN Zhi-sheng,HE Liu,et al.Effect of Hedysarum Polysaccharides on Bcl-2/Caspase-3 Signaling Pathway of Schwann Cells Cultured in High Glucose[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(06):71-78. DOI: 10.13422/j.cnki.syfjx.20220694.
Effect of Hedysarum Polysaccharides on Bcl-2/Caspase-3 Signaling Pathway of Schwann Cells Cultured in High Glucose
To observe the effects of Hedysarum polysaccharides(HPS)on the signaling pathways of B-cell lymphoma 2 (Bcl-2), cysteinyl aspartate-specific protease 3 (Caspase-3), and Bcl-2-associated X protein (Bax) in Schwann cells(SCs)cultured in high glucose,and explore the possible mechanism of HPS against diabetic peripheral neuropathy(DPN).
Method
2
Four SD suckling mice aged 5-7 days were randomly divided into a normal group,a high-glucose group,an HPS + high-glucose group,and an
α
-lipoic acid(
α
-LA)+ high-glucose group. SCs were extracted from the sciatic nerve and cultured in a 37 ℃,5% CO
2
incubator. After the cells reached 80% confluence,Cell Counting Kit-8(CCK-8)was used to screen the experimental concentrations suitable for high glucose,HPS, and α-LA interventions. Western blot and Real-time polymerase chain reaction (Real-time PCR)were used to detect the protein and mRNA expression of Bcl-2,Bax,and Caspase-3. The apoptosis rate of SCs was detected by flow cytometry using Annexin V-fluorescein isothiocyanate (FITC)/propidium iodide (PI).
Result
2
As revealed by Western blot and real-time PCR,compared with the normal group,the high-glucose group showed reduced protein and mRNA expression of Bcl-2 and increased protein and mRNA expression of Bax and Caspase-3(
P
<
0.01). Compared with the high-glucose group,the HPS + high-glucose group and the
α
-LA + high-glucose group showed increased protein and mRNA expression of Bcl-2 and decreased protein and mRNA expression of Bax and Caspase-3(
P
<
0.01). As displayed by the results of flow cytometry using Annexin V/PI, compared with the normal group,the high-glucose group showed increased apoptosis rate;compared with the high-glucose group,the HPS + high-glucose group and the
α
-LA + high-glucose group showed reduced apoptosis rate(
P
<
0.01).
Conclusion
2
HPS can alleviate the apoptotic response of SCs,and its mechanism may be related to the inhibition of the activation of the Bcl-2/Caspase-3 signaling pathway.
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