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Wang R, Shan H, Zhang G, Li Q, Wang J, Yan Q, Li E, Diao Y, Wei L. An inulin-type fructan (AMP1-1) from Atractylodes macrocephala with anti-weightlessness bone loss activity. Carbohydr Polym 2022; 294:119742. [DOI: 10.1016/j.carbpol.2022.119742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 11/02/2022]
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Isolation and structure elucidation of polysaccharides from fruiting bodies of mushroom Coriolus versicolor and evaluation of their immunomodulatory effects. Int J Biol Macromol 2020; 166:1387-1395. [PMID: 33161080 DOI: 10.1016/j.ijbiomac.2020.11.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/04/2020] [Accepted: 11/04/2020] [Indexed: 01/18/2023]
Abstract
Coriolus versicolor is an edible medicinal mushroom in China. Two polysaccharides, named as CVPn and CVPa were separated from the dried fruiting bodies of Coriolus versicolor by water extraction and ethanol precipitation. Their chemical structures were well elucidated with overall consideration of monosaccharide composition, methylation analysis and 1D/2D-NMR spectra data. The bioactivities on RAW 264.7 macrophages cells were evaluated, and further structure-bioactivity relationships were concluded. With molecular weight of 29.7 kDa for CVPn and 50.8 kDa for CVPa, the two isolated polysaccharides were both composed of (l → 4)-β-/(1 → 3)-β-d-glucopyranosyl group as backbone with branches attached at O-6 site. Comparing to CVPn, CVPa with relative high molecular weight and less branches showed significant induction of NO production, obvious augmentation of iNOS and TNF-α mRNA expression level, and phagocytosis on RAW 264.7 cells. These results clarified that CVP polysaccharides with less branches and high molecular weight possessed enhanced immunomodulatory ability, and this finding could be a reference for the utilization of Coriolus versicolor.
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Zhang X, Hu P, Zhang X, Li X. Chemical structure elucidation of an inulin-type fructan isolated from Lobelia chinensis lour with anti-obesity activity on diet-induced mice. Carbohydr Polym 2020; 240:116357. [DOI: 10.1016/j.carbpol.2020.116357] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 04/20/2020] [Accepted: 04/20/2020] [Indexed: 12/28/2022]
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Pu X, Ma X, Liu L, Ren J, Li H, Li X, Yu S, Zhang W, Fan W. Structural characterization and antioxidant activity in vitro of polysaccharides from angelica and astragalus. Carbohydr Polym 2015; 137:154-164. [PMID: 26686116 DOI: 10.1016/j.carbpol.2015.10.053] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 09/09/2015] [Accepted: 10/14/2015] [Indexed: 01/28/2023]
Abstract
In the present study, structural characterization and antioxidant activity of a fraction (AAP-2A) of polysaccharides from angelica and astragalus (AAP) were investigated. Characteriztion assay showed that AAP-2A had molecular weight (Mw), root-mean square (RMS) radius and polydispersity index (Mw/Mn) of 2.252 × 10(3)kDa, 28.4 nm and 1.038, respectively. There were infrared characteristic absorption peaks of polysaccharides in FT-IR spectroscopy. AAP-2A was composed of rhamnose (Rha), galactose (Gal), arabinose (Ara) and glucose (Glc) with a molar ratio of 1:2.13:3.22:6.18 in GC analysis. Methylation analysis combined with NMR spectroscopic analysis demonstrated that a preliminary structure of AAP-2A was proposed as follows: 1,3-linked Rhap, 1,3-linked Galp, 1,3-linked Araf, 1,5-linked Araf, 1,3,5-linked Araf, 1,4-linked Glcp and 1,4,6-linked Glcp interspersed with terminal Glcp. AAP-2A exhibited a surface with a sheet-like appearance in scanning electron microscope and stronger antioxidant capacity compared with AAP.
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Affiliation(s)
- Xiuying Pu
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China.
| | - Xiaolong Ma
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China
| | - Lu Liu
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China
| | - Jing Ren
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China
| | - Haibing Li
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China
| | - Xiaoyue Li
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China
| | - Shuang Yu
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China
| | - Weijie Zhang
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China
| | - Wenbo Fan
- College of Life Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; The Key Lab of Screening, Evaluated and Advanced Processing of Traditional Chinese Medicine and Tibetan Medicine, Gansu Educational Department, Lanzhou 730050, China
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Diversity of O Antigens within the Genus Cronobacter: from Disorder to Order. Appl Environ Microbiol 2015; 81:5574-82. [PMID: 26070668 DOI: 10.1128/aem.00277-15] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 06/01/2015] [Indexed: 11/20/2022] Open
Abstract
Cronobacter species are Gram-negative opportunistic pathogens that can cause serious infections in neonates. The lipopolysaccharides (LPSs) that form part of the outer membrane of such bacteria are possibly related to the virulence of particular bacterial strains. However, currently there is no clear overview of O-antigen diversity within the various Cronobacter strains and links with virulence. In this study, we tested a total of 82 strains, covering each of the Cronobacter species. The nucleotide variability of the O-antigen gene cluster was determined by restriction fragment length polymorphism (RFLP) analysis. As a result, the 82 strains were distributed into 11 previously published serotypes and 6 new serotypes, each defined by its characteristic restriction profile. These new serotypes were confirmed using genomic analysis of strains available in public databases: GenBank and PubMLST Cronobacter. Laboratory strains were then tested using the current serotype-specific PCR probes. The results show that the current PCR probes did not always correspond to genomic O-antigen gene cluster variation. In addition, we analyzed the LPS phenotype of the reference strains of all distinguishable serotypes. The identified serotypes were compared with data from the literature and the MLST database (www.pubmlst.org/cronobacter/). Based on the findings, we systematically classified a total of 24 serotypes for the Cronobacter genus. Moreover, we evaluated the clinical history of these strains and show that Cronobacter sakazakii O2, O1, and O4, C. turicensis O1, and C. malonaticus O2 serotypes are particularly predominant in clinical cases.
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