WAN Xiao-ying,LIU Zhen-li,SONG Zhi-qian,et al.Comparison of Relative Molecular Weight Distribution and Immune Activity of Polysaccharides in Polygonati Rhizoma Before and After Processing[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(15):83-90.
WAN Xiao-ying,LIU Zhen-li,SONG Zhi-qian,et al.Comparison of Relative Molecular Weight Distribution and Immune Activity of Polysaccharides in Polygonati Rhizoma Before and After Processing[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(15):83-90. DOI: 10.13422/j.cnki.syfjx.20210446.
Comparison of Relative Molecular Weight Distribution and Immune Activity of Polysaccharides in Polygonati Rhizoma Before and After Processing
To study the relative molecular weight and distribution of polysaccharides in Polygonati Rhizoma (PR) before and after processing, as well as the effects of different polysaccharide fractions on immune function and inflammatory response of mouse peritoneal macrophages.
Method
2
High-performance gel permeation chromatography (HPGPC) was used to determine the relative molecular weight and distribution of polysaccharides in PR (named SC) and polysaccharides in PR processed with wine (named JC), and polysaccharide fractions with different relative molecular weights were obtained by dialysis. Different polysaccharide fractions were applied to mouse peritoneal macrophages, which was normal or induced by lipopolysaccharide (LPS). Cell counting kit-8 (CCK-8) method was used to select the optimal administration concentration. Enzyme linked immunosorbent assay (ELISA) was used to determine the concentrations of tumor necrosis factor-
α
(TNF-
α
) and interleukin-1
β
(IL-1
β
) in the cell supernatant. The Griess method was used to detect the concentration of nitric oxide (NO).
Result
2
SC and JC could be divided into four parts according to relative molecular weight and its distribution range, including part Ⅰ(14 800-2 273 kDa), part Ⅱ(2 148-296 kDa), part Ⅲ(12-1 kDa) and part Ⅳ(818-362 Da). Based on the differences of part Ⅰ and part Ⅲ after processing, the SC and JC were divided into two-part according to the weight-average relative molecular weight (
M
W
). For normal mouse peritoneal macrophages, JC could significantly promote the secretion of TNF-
α
(
P
<
0.01), while SC had no significant effect. Four polysaccharide fractions, named SD (SC fraction with
M
W
>
50 kDa), JD (JC fraction with
M
W
>
50 kDa), SX (SC fraction with
M
W
<
50 kDa) and JX (JC fraction with
M
W
<
50 kDa), also could
significantly promote the secretion of TNF-
α
(
P
<
0.01), but only JX could significantly promote the secretion of NO (
P
<
0.05). In addition, the effect of JX group stimulated secretion of TNF-
α
was better than the JD group (
P
<
0.01). For the LPS-induced macrophage model, JC and SC group could
significantly inhibit the secretion of TNF-
α
and IL-1
β
(
P
<
0.01), and the effect of JC was stronger. To compare different polysaccharide fractions, the impact of JX on inhibiting the secretion of TNF-
α
and IL-1
β
was
significantly stronger than JD (
P
<
0.01), and SX inhibited the secretion of TNF-
α
was significantly stronger than SD (
P
<
0.01).
Conclusion
2
The relative molecular weight and distribution of polysaccharides in PR before and after processing have changed. JC and SC improve the immune regulation mainly by inhibiting the inflammatory response, the fraction of
M
W
<
50 kDa is the main effective part, and the effect of PR polysaccharides in inhibiting the inflammatory is enhanced after processing with wine.
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Related Author
Gang DU
Mei-ling LIU
Lu-yao HUANG
Yan SU
Wei-dong JIANG
Xiao-shan LI
Xiao-hui ZHOU
Qian-qian FAN
Related Institution
Sichuan Institute for Food and Drug Control
West China School of Pharmacy,Sichuan University
Haikou Hospital Affiliated to Xiangya Medical College of Central South University
Hainan Hospital of Traditional Chinese Medicine
Human Parasitology Laboratory,Wannan Medical College