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Bhattacharyya S, Feferman L, Han X, Xia K, Zhang F, Linhardt RJ, Tobacman JK. Increased CHST15 follows decline in arylsulfatase B (ARSB) and disinhibition of non-canonical WNT signaling: potential impact on epithelial and mesenchymal identity. Oncotarget 2020; 11:2327-2344. [PMID: 32595831 PMCID: PMC7299535 DOI: 10.18632/oncotarget.27634] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/20/2020] [Indexed: 12/15/2022] Open
Abstract
Expression of CHST15 (carbohydrate sulfotransferase 15; chondroitin 4-sulfate-6-sulfotransferase; BRAG), the sulfotransferase enzyme that adds 6-sulfate to chondroitin 4-sulfate (C4S) to make chondroitin 4,6-disulfate (chondroitin sulfate E, CSE), was increased in malignant prostate epithelium obtained by laser capture microdissection and following arylsulfatase B (ARSB; N-acetylgalactosamine-4-sulfatase) silencing in human prostate epithelial cells. Experiments in normal and malignant human prostate epithelial and stromal cells and tissues, in HepG2 cells, and in the ARSB-null mouse were performed to determine the pathway by which CHST15 expression is up-regulated when ARSB expression is reduced. Effects of Wnt-containing prostate stromal cell spent media and selective inhibitors of WNT, JNK, p38, SHP2, β-catenin, Rho, and Rac-1 signaling pathways were determined. Activation of WNT signaling followed declines in ARSB and Dickkopf WNT Signaling Pathway Inhibitor (DKK)3 and was required for increased CHST15 expression. The increase in expression of CHST15 followed activation of non-canonical WNT signaling and involved Wnt3A, Rac-1 GTPase, phospho-p38 MAPK, and nuclear DNA-bound GATA-3. Inhibition of JNK, Sp1, β-catenin nuclear translocation, or Rho kinase had no effect. Consistent with higher expression of CHST15 in prostate epithelium, disaccharide analysis showed higher levels of CSE and chondroitin 6-sulfate (C6S) disaccharides in prostate epithelial cells. In contrast, chondroitin 4-sulfate (C4S) disaccharides were greater in prostate stromal cells. CSE may contribute to increased C4S in malignant epithelium when GALNS (N-aceytylgalactosamine-6-sulfate sulfatase) is increased and ARSB is reduced. These effects increase chondroitin 4-sulfates and reduce chondroitin 6-sulfates, consistent with enhanced stromal characteristics and epithelial-mesenchymal transition.
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Affiliation(s)
- Sumit Bhattacharyya
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Jesse Brown VAMC, Chicago, IL, USA
| | - Leo Feferman
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Jesse Brown VAMC, Chicago, IL, USA
| | - Xiaorui Han
- Department of Chemistry and Chemical Biology Rensselaer Polytechnic Insitute, Troy, NY, USA
| | - Ke Xia
- Department of Chemistry and Chemical Biology Rensselaer Polytechnic Insitute, Troy, NY, USA
| | - Fuming Zhang
- Department of Chemistry and Chemical Biology Rensselaer Polytechnic Insitute, Troy, NY, USA
| | - Robert J Linhardt
- Department of Chemistry and Chemical Biology Rensselaer Polytechnic Insitute, Troy, NY, USA
| | - Joanne K Tobacman
- Department of Medicine, University of Illinois at Chicago, Chicago, IL, USA.,Jesse Brown VAMC, Chicago, IL, USA
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Rios R, Silva HBFD, Carneiro NVQ, Pires ADO, Carneiro TCB, Costa RDS, Marques CR, Machado MSS, Velozo EDS, Silva TMGD, Silva TMSD, Conceição ADS, Alcântara-Neves NM, Figueiredo CA. Solanum paniculatum L. decreases levels of inflammatory cytokines by reducing NFKB, TBET and GATA3 gene expression in vitro. JOURNAL OF ETHNOPHARMACOLOGY 2017; 209:32-40. [PMID: 28729226 DOI: 10.1016/j.jep.2017.07.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 06/20/2017] [Accepted: 07/11/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Solanum paniculatum L., popularly known as jurubeba, is a common subtropical plant from Brazil, Paraguay, Bolivia and Argentina, that is used in folk medicine for the treatment of anemia, gastrointestinal disorders and inflammatory conditions in general. In addition to that, an ethnobotanical survey in "Todos os Santos" Bay have pointed out S. paniculatum as an herb to treat asthma. Previous publications have shown that S. paniculatum possesses antibiotic, antioxidant and modulatory effects on gastric acid secretion; however, its anti-inflammatory potential remains unexplored. AIM OF THE STUDY Herein, we analyzed the S. paniculatum fruits hexane extract (SpE) for the presence of stigmasterol and β-sitosterol and investigated the anti-inflammatory effect of SpE in vitro. MATERIALS AND METHODS SpE was subjected to high-performance liquid chromatography (HPLC) for standardization and quantification of stigmasterol and β-sitosterol. Spleen cells from BALB/c mice were cultivated and stimulated with pokeweed mitogen and also exposed to 15, 30 and 60µg/mL of SpE. Following treatment, levels of IFN-γ, IL-4 and IL-10 in the culture supernatants were assessed by ELISA. We also evaluated nitric oxide (NO) production by murine LPS-stimulated peritoneal macrophages using the Griess technique. In addition, the ability of SpE to stabilize membranes was assessed using a model of hemolysis induced by heat on murine erythrocytes. Gene expression of Th1-cell-specific Tbx21 transcription factor (TBET), zinc-finger transcription factor-3 (GATA3), and nuclear factor-κB (NFKB) in murine spleen cells were assessed by quantitative Polymerase Chain Reaction (qRT-PCR). RESULTS SpE at 15, 30 and 60µg/mL significantly attenuated cell proliferation, decreased IL-4 release, reduced NO production and improved erythrocyte membrane stabilization in a concentration-dependent manner. SpE was also able to decrease the release of IFN-γ without altering IL-10 levels. The mechanism whereby SpE decreased inflammatory markers may be related to the reduction of NFKB, TBET and GATA3 gene expression. CONCLUSIONS This study is the first to test the anti-inflammatory action of S. paniculatum. Herein, we provided evidence for the popular use of S. paniculatum in inflammatory conditions. Additional studies must be conducted to further explore the anti-inflammatory potential of SpE and to elucidate possible clinical applications.
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Affiliation(s)
- Raimon Rios
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Campus Canela, 40110100 Salvador, Bahia, Brazil
| | | | | | - Anaque de Oliveira Pires
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Campus Canela, 40110100 Salvador, Bahia, Brazil
| | | | - Ryan Dos Santos Costa
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Campus Canela, 40110100 Salvador, Bahia, Brazil
| | - Cintia Rodrigues Marques
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Campus Canela, 40110100 Salvador, Bahia, Brazil
| | | | - Eudes da Silva Velozo
- Departamento do Medicamento, Faculdade de Farmácia, Universidade Federal da Bahia, Campus Ondina, 40170115 Salvador, Bahia, Brazil
| | - Telma M G da Silva
- Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, 52171900 Recife, Pernambuco, Brazil
| | - Tania M S da Silva
- Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, 52171900 Recife, Pernambuco, Brazil
| | - Adilva de Souza Conceição
- Departamento de Educação, Universidade do Estado da Bahia, Campus VIII, 48608240 Paulo Afonso, Bahia, Brazil
| | - Neuza Maria Alcântara-Neves
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Campus Canela, 40110100 Salvador, Bahia, Brazil
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Macauley MS, Kawasaki N, Peng W, Wang SH, He Y, Arlian BM, McBride R, Kannagi R, Khoo KH, Paulson JC. Unmasking of CD22 Co-receptor on Germinal Center B-cells Occurs by Alternative Mechanisms in Mouse and Man. J Biol Chem 2015; 290:30066-77. [PMID: 26507663 DOI: 10.1074/jbc.m115.691337] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Indexed: 11/06/2022] Open
Abstract
CD22 is an inhibitory B-cell co-receptor whose function is modulated by sialic acid (Sia)-bearing glycan ligands. Glycan remodeling in the germinal center (GC) alters CD22 ligands, with as yet no ascribed biological consequence. Here, we show in both mice and humans that loss of high affinity ligands on GC B-cells unmasks the binding site of CD22 relative to naive and memory B-cells, promoting recognition of trans ligands. The conserved modulation of CD22 ligands on GC B-cells is striking because high affinity glycan ligands of CD22 are species-specific. In both species, the high affinity ligand is based on the sequence Siaα2-6Galβ1-4GlcNAc, which terminates N-glycans. The human ligand has N-acetylneuraminic acid (Neu5Ac) as the sialic acid, and the high affinity ligand on naive B-cells contains 6-O-sulfate on the GlcNAc. On human GC B-cells, this sulfate modification is lost, giving rise to lower affinity CD22 ligands. Ligands of CD22 on naive murine B-cells do not contain the 6-O-sulfate modification. Instead, the high affinity ligand for mouse CD22 has N-glycolylneuraminic acid (Neu5Gc) as the sialic acid, which is replaced on GC B-cells with Neu5Ac. Human naive and memory B-cells express sulfated glycans as high affinity CD22 ligands, which are lost on GC B-cells. In mice, Neu5Gc-containing glycans serve as high affinity CD22 ligands that are replaced by Neu5Ac-containing glycans on GC B-cells. Our results demonstrate that loss of high affinity CD22 ligands on GC B-cells occurs in both mice and humans through alternative mechanisms, unmasking CD22 relative to naive and memory B-cells.
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Affiliation(s)
| | | | | | | | - Yuan He
- Cell and Molecular Biology, and
| | | | | | - Reiji Kannagi
- Biomedical Science, Academia Sinica, Taipei 115, Taiwan
| | | | - James C Paulson
- From the Departments of Chemical Physiology, Cell and Molecular Biology, and Immunology and Microbial Science, The Scripps Research Institute, La Jolla, California 92037 and
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