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Yao W, Ye XS. Donor Preactivation-Based Glycan Assembly: from Manual to Automated Synthesis. Acc Chem Res 2024. [PMID: 38623919 DOI: 10.1021/acs.accounts.4c00072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
ConspectusCarbohydrates are called the third chain of life. Carbohydrates participate in many important biochemical functions in living species, and the biological information carried by them is several orders of magnitude larger than that of nucleic acids and proteins. However, due to the intrinsic complexity and heterogeneity of carbohydrate structures, furnishing pure and structurally well-defined glycans for functional studies is a formidable task, especially for homogeneous large-size glycans. To address this issue, we have developed a donor preactivation-based one-pot glycosylation strategy enabling multiple sequential glycosylations in a single reaction vessel.The donor preactivation-based one-pot glycosylation refers to the strategy in which the glycosyl donor is activated in the absence of a glycosyl acceptor to generate a reactive intermediate. Subsequently, the glycosyl acceptor with the same anomeric leaving group is added, leading to a glycosyl coupling reaction, which is then iterated to rapidly achieve the desired glycan in the same reactor. The advantages of this strategy include the following: (1) unique chemoselectivity is obtained after preactivation; (2) it is independent of the reactivity of glycosyl donors; (3) multiple-step glycosylations are enabled without the need for intermediate purification; (4) only stoichiometric building blocks are required without complex protecting group manipulations. Using this protocol, a range of glycans including tumor-associated carbohydrate antigens, various glycosaminoglycans, complex N-glycans, and diverse bacterial glycans have been synthesized manually. Gratifyingly, the synthesis of mycobacterial arabinogalactan containing 92 monosaccharide units has been achieved, which created a precedent in the field of polysaccharide synthesis. Recently, the synthesis of a highly branched arabinogalactan from traditional Chinese medicine featuring 140 monosaccharide units has been also accomplished to evaluate its anti-pancreatic-cancer activity. In the spirit of green and sustainable chemistry, this strategy can also be applied to light-driven glycosylation reactions, where either UV or visible light can be used for the activation of glycosyl donors.Automated synthesis is an advanced approach to the construction of complex glycans. Based on the two preactivation modes (general promoter activation mode and light-induced activation mode), a universal and highly efficient automated solution-phase synthesizer was further developed to drive glycan assembly from manual to automated synthesis. Using this synthesizer, a library of oligosaccharides covering various glycoforms and glycosidic linkages was assembled rapidly, either in a general promoter-activation mode or in a light-induced-activation mode. The automated synthesis of a fully protected fondaparinux pentasaccharide was realized on a gram scale. Furthermore, the automated synthesis of large-size polysaccharides was performed, allowing the assembly of arabinans up to an astonishing 1080-mer using the automated multiplicative synthesis strategy, taking glycan synthesis to a new height far beyond the synthesis of nucleic acids (up to 200-mer) and proteins (up to 472-mer).
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Affiliation(s)
- Wenlong Yao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, China
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Zhang J, Luo ZX, Wu X, Gao CF, Wang PY, Chai JZ, Liu M, Ye XS, Xiong DC. Photosensitizer-free visible-light-promoted glycosylation enabled by 2-glycosyloxy tropone donors. Nat Commun 2023; 14:8025. [PMID: 38049421 PMCID: PMC10695961 DOI: 10.1038/s41467-023-43786-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 11/19/2023] [Indexed: 12/06/2023] Open
Abstract
Photochemical glycosylation has attracted considerable attention in carbohydrate chemistry. However, to the best of our knowledge, visible-light-promoted glycosylation via photoactive glycosyl donor has not been reported. In the study, we report a photosensitizer-free visible-light-mediated glycosylation approach using a photoactive 2-glycosyloxy tropone as the donor. This glycosylation reaction proceeds at ambient temperature to give a wide range of O-glycosides or oligosaccharides with yields up to 99%. This method is further applied in the stereoselective preparation of various functional glycosyl phosphates/phosphosaccharides, the construction of N-glycosides/nucleosides, and the late-stage glycosylation of natural products or pharmaceuticals on gram scales, and the iterative synthesis of hexasaccharide. The protocol features uncomplicated conditions, operational simplicity, wide substrate scope (58 examples), excellent compatibility with functional groups, scalability of products (7 examples), and high yields. It provides an efficient glycosylation method for accessing O/N-glycosides and glycans.
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Affiliation(s)
- Jing Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Zhao-Xiang Luo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xia Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Chen-Fei Gao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Peng-Yu Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Jin-Ze Chai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Miao Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China.
- Ningbo Institute of Marine Medicine, Peking University, Ningbo, 315010, China.
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Li G, Noguchi M, Ishihara M, Takagi Y, Nagaki M, Saito S, Saito M, Ye XS, Shoda SI. Stereoselective protecting-group-free synthesis of alkyl glycosides using dibenzyloxy triazine type glycosyl donors. Carbohydr Res 2023; 534:108940. [PMID: 37738819 DOI: 10.1016/j.carres.2023.108940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 09/04/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
Chemical O-glycosylation is a key step for the synthesis of sugar-containing molecules such as glycolipids. However, traditional carbohydrate chemistry is characterized by extensive use of protective groups, resulting in laborious manipulations and poor atom economy. Here, we present a protecting-group-free glycosylation strategy employing dibenzyloxy-1,3,5-triazin-2-yl glycosides (DBT-glycosides) as glycosyl donors. The DBT-glycosyl donors could be prepared directly through an alkaline nucleophilic substitution from unprotected sugars in aqueous media. The O-glycosylation of alcohols by using DBT-glycosyl donors has been carried out under mild hydrogenolytic conditions, affording the corresponding alkyl glycosides stereo-selectively in good yields.
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Affiliation(s)
- Gefei Li
- College of Science, Nanjing Forestry University, Long Pan Road No.159, Nanjing, 210037, PR China; Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07, Aoba, Aoba-ku, Sendai, 980-8579, Japan; State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, PR China
| | - Masato Noguchi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07, Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Masaki Ishihara
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07, Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Yuka Takagi
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07, Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Marina Nagaki
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07, Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Sachie Saito
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07, Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Masashi Saito
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07, Aoba, Aoba-ku, Sendai, 980-8579, Japan
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, PR China.
| | - Shin-Ichiro Shoda
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-07, Aoba, Aoba-ku, Sendai, 980-8579, Japan.
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4
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Wei MM, Ma YF, Zhang GL, Li Q, Xiong DC, Ye XS. Urea-catalyzed N-Glycosylation of Amides/Azacycles with Glycosyl Halides. Chem Asian J 2023; 18:e202300791. [PMID: 37843982 DOI: 10.1002/asia.202300791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 10/18/2023]
Abstract
The efficient synthesis of N-glycosides via direct N-glycosylation of amides/azacycles has been reported. The glycosylation of amides/azacycles with glycosyl halides in the presence of a catalytic amount of urea proceeded smoothly to provide the corresponding N-glycosylated amides or nucleosides in good to excellent yields with 1,2-trans-stereoselectivity. Moreover, by the addition of terpyridine, the 1,2-cis-stereoselectivity was achieved.
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Affiliation(s)
- Meng-Man Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No.38, Beijing, 100191, China
| | - Yu-Feng Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No.38, Beijing, 100191, China
| | - Gao-Lan Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No.38, Beijing, 100191, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No.38, Beijing, 100191, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No.38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No.38, Beijing, 100191, China
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5
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Mo J, Zou Y, Li BH, Li G, Zheng XJ, Liu Y, Ye XS. Tumor-Associated Extracellular Microvesicles with Fluorine-Modified Carbohydrate Antigens Trigger a Stronger Antitumor Immune Response. ACS Appl Mater Interfaces 2023; 15:40201-40212. [PMID: 37589474 DOI: 10.1021/acsami.3c06399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Abnormal glycosylation is a hallmark of tumor development, and tumor-associated carbohydrate antigens are potential immune targets for tumor therapy. Tumor-associated extracellular microvesicles are subcellular vesicles released from cell membranes that have immunogenicity similar to that of precursor cells. However, unmodified tumor-derived microvesicles have weaknesses, such as low immunogenicity, poor biostability, and short half-life in vivo. For the first time, we herein generated extracellular microvesicles containing modified tumor-associated carbohydrate antigens by constructing a cell line with highly expressed antigen-processing enzymes utilizing fluorine-modified monosaccharide substrates via a metabolic oligosaccharide engineering strategy. The microvesicles were applied to tumor immunity, achieving enhanced immunoprophylaxis and immunotherapy effects. Furthermore, the mechanisms of antitumor immunity were explored. Our findings may provide new insights into the adhibition of suitably modified extracellular microvesicles and the development of more effective carbohydrate-based anticancer vaccines.
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Affiliation(s)
- Juan Mo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, People's Republic of China
| | - You Zou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, People's Republic of China
| | - Bo-Han Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, People's Republic of China
| | - Gefei Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, People's Republic of China
- College of Science, Nanjing Forestry University, Nanjing, Jiangsu 210037, People's Republic of China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, People's Republic of China
| | - Yang Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, People's Republic of China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, People's Republic of China
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Zhang X, Xu CH, Mo J, Zheng XJ, Chen YF, Yang AQ, Zhang YH, Wang PY, Yuan X, Ye XS. Self-Assembled Core-Shell Nanoscale Coordination Polymer Nanoparticles Carrying a Sialyltransferase Inhibitor for Cancer Metastasis Inhibition. ACS Appl Mater Interfaces 2023; 15:7713-7724. [PMID: 36728365 DOI: 10.1021/acsami.2c18601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Despite hypersialylation of cancer cells together with a significant upregulation of sialyltransferase (ST) activity contributes to the metastatic cascade at multiple levels, there are few dedicated tools to interfere with their expression. Although transition state-based ST inhibitors are well-established, they are not membrane permeable. To tackle this problem, herein, we design and construct long-circulating, self-assembled core-shell nanoscale coordination polymer (NCP) nanoparticles carrying a transition state-based ST inhibitor, which make the inhibitor transmembrane and potently strip diverse sialoglycans from various cancer cells. In the experimental lung metastasis and metastasis prevention models, the nanoparticle device (NCP/STI) significantly inhibits metastases formation without systemic toxicity. This strategy enables ST inhibitors to be applied to cells and animals by providing them with a well-designed nanodelivery system. Our work opens a new avenue to the development of transition state-based ST inhibitors and demonstrates that NCP/STI holds great promise in achieving metastases inhibition for multiple cancers.
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Affiliation(s)
- Xiang Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Cheng-Hao Xu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Juan Mo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Yan-Fang Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - An-Qi Yang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Yi-Heng Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Peng-Yu Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Xia Yuan
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Beijing 100191, China
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7
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Ning N, Cai YM, Weng HL, Wang LZ, Wen CL, Zhang JB, Ye XS, Chen X. [Chlamydia trachomatis infection and its associated factors among asymptomatic outpatients attending sexually transmitted disease-related clinics]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1436-1440. [PMID: 36117351 DOI: 10.3760/cma.j.cn112338-20211015-00796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To understand the prevalence of Chlamydia trachomatis (CT) infection and its associated factors among asymptomatic outpatients attending sexually transmitted disease (STD)-related clinics in Shenzhen and provide evidence for development of future interventions. Methods: From April 15 to May 16, 2018, a cross-sectional study was conducted and patients attending STD-related Clinics were recruited from 22 medical institutions in Nanshan, Luohu, Bao'an, Longgang, Yantian, and Longhua districts of Shenzhen. After the informed consent from each participant was obtained, social-demographic information was collected through a structured questionnaire and urine samples were collected for CT nucleic acid detection. In addition, logistic regression was used to explore associated factors of CT infection. Results: In asymptomatic outpatients, the prevalence of CT infection was 7.16% (250/3 492). Being single (aOR=2.29, 95%CI:1.65-3.16), without registered Shenzhen residency (aOR=1.49, 95%CI:1.04-2.13), and without previous CT testing in the past year (aOR=2.04, 95%CI:1.03-4.05) were the risk factors of CT infection in asymptomatic outpatients. Among participants without registered Shenzhen residency, 89.25% (2 176/2 438) were college-degree or below, and 51.29% (1 255/2 447) were aged ≤30 years, and the risk of CT infection among those ≤30 years old was 1.73 times higher than those >30 years old (95%CI:1.28-2.34). Conclusions: The prevalence of CT infection was high among asymptomatic outpatients attending STD-related clinics in Shenzhen. Routine CT screening should be carried out for this population, especially for those with sexually active age, being single, with low educational level, and without previous CT testing in the past year. Also, raising their awareness of knowledge and adverse outcomes of CT infection should be considered to promote routine CT screening and timely treatment.
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Affiliation(s)
- N Ning
- Department of Sexually Transmitted Disease and Leprosy Control and Prevention,Shenzhen Center for Chronic Disease Control, Shenzhen 518020,China
| | - Y M Cai
- Department of Sexually Transmitted Disease and Leprosy Control and Prevention,Shenzhen Center for Chronic Disease Control, Shenzhen 518020,China
| | - H L Weng
- Department of Sexually Transmitted Disease and Leprosy Control and Prevention,Shenzhen Center for Chronic Disease Control, Shenzhen 518020,China
| | - L Z Wang
- Department of Sexually Transmitted Disease and Leprosy Control and Prevention,Shenzhen Center for Chronic Disease Control, Shenzhen 518020,China
| | - C L Wen
- Department of Sexually Transmitted Disease and Leprosy Control and Prevention,Shenzhen Center for Chronic Disease Control, Shenzhen 518020,China
| | - J B Zhang
- Department of Sexually Transmitted Disease and Leprosy Control and Prevention,Shenzhen Center for Chronic Disease Control, Shenzhen 518020,China
| | - X S Ye
- Department of Sexually Transmitted Disease and Leprosy Control and Prevention,Shenzhen Center for Chronic Disease Control, Shenzhen 518020,China
| | - Xiangsheng Chen
- National Center for Sexually Transmitted Disease Control, Chinese Center for Disease Control and Prevention, Nanjing 210042, China
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Li G, Luo Y, Mo J, Noguchi M, Jing J, Luo Z, Shoda SI, Ye XS. Hydrogen bond-assisted 1,2-cis O-glycosylation under mild hydrogenolytic conditions. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yan M, Li ZY, Lin X, Ye XS, Qian F, Shi Y, Zhao YL. [Effect of duodenal stump reinforcement on postoperative complications in patients undergoing laparoscopic radical gastrectomy]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:590-595. [PMID: 35844121 DOI: 10.3760/cma.j.cn441530-20210930-00392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To evaluate the influence of duodenal stump reinforcing on the short-term complications after laparoscopic radical gastrectomy. Methods: A retrospective cohort study with propensity score matching (PSM) was conducted. Clinical data of 1204 patients with gastric cancer who underwent laparoscopic radical gastrectomy at the First Affiliated Hospital of Army Medical University from April 2009 to December 2018 were collected. The digestive tract reconstruction methods included Billroth II anastomosis, Roux-en-Y anastomosis and un-cut-Roux- en-Y anastomosis. A linear stapler was used to transected the stomach and the duodenum. Among 1204 patients, 838 were males and 366 were females with mean age of (57.0±16.0) years. Duodenal stump was reinforced in 792 cases (reinforcement group) and unreinforced in 412 cases (non-reinforcement group). There were significant differences in resection range and anastomotic methods between the two groups (both P<0.001). The two groups were matched by propensity score according to the ratio of 1∶1, and the reinforcement group was further divided into purse string group and non-purse string group. The primary outcome was short-term postoperative complications (within one month after operation). Complications with Clavien-Dindo grade ≥ III a were defined as severe complications, and the morbidity of complication between the reinforcement group and the non-reinforcement group, as well as between the purse string group and the non-purse string group was compared. Results: After PSM, 411 pairs were included in the reinforcement group and the non-reinforcement group, and there were no significant differences in baseline data between the two groups (all P>0.05). No perioperative death occurred in any patient.The short-term morbidity of postoperative complication was 7.4% (61/822), including 14 cases of anastomotic leakage (23.0%), 11 cases of abdominal hemorrhage (18.0%), 8 cases of duodenal stump leakage (13.1%), 2 cases of incision dehiscence (3.3%), 6 cases of incision infection (9.8%) and 20 cases of abdominal infection (32.8%). Short-term postoperative complications were found in 25 patients (6.1%) and 36 patients (8.8%) in the reinforcement group and the non-reinforcement group, respectively, without significant difference (χ2=2.142, P=0.143). Nineteen patients (2.3%) developed short-term severe complications (Clavien-Dindo grade ≥IIIa), while no significant difference in severe complications was found between the two groups (1.7% vs. 2.9%, χ2=1.347, P=0.246). Sub-group analysis showed that the morbidity of short-term postoperative complication of the purse string group was 2.6% (9/345), which was lower than 24.2% (16/66) of the non-purse string group (χ2=45.388, P<0.001). Conclusion: Conventional reinforcement of duodenal stump does not significantly reduce the incidence of duodenal stump leakage, so it is necessary to choose whether to reinforce the duodenal stump individually, and purse string suture should be the first choice when decided to reinforce.
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Affiliation(s)
- M Yan
- Department of General Surgery, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - Z Y Li
- Department of General Surgery, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - X Lin
- Department of General Surgery, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - X S Ye
- Department of General Surgery, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - F Qian
- Department of General Surgery, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - Y Shi
- Department of General Surgery, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
| | - Y L Zhao
- Department of General Surgery, the First Hospital Affiliated to Army Medical University, Chongqing 400038, China
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10
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Li G, Dao Y, Mo J, Dong S, Shoda SI, Ye XS. Protection-Free Site-Directed Peptide or Protein
S
-Glycosylation and Its Application in the Glycosylation of Glucagon-like Peptide 1. CCS Chem 2022. [DOI: 10.31635/ccschem.021.202101115] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Gefei Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191
| | - Yuankun Dao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191
| | - Juan Mo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191
| | - Suwei Dong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191
| | - Shin-ichiro Shoda
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aoba-ku, Sendai 980-8579
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191
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11
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Liu KM, Wang PY, Guo ZY, Xiong DC, Qin XJ, Liu M, Liu M, Xue WY, Ye XS. Iterative Synthesis of 2-Deoxyoligosaccharides Enabled by Stereoselective Visible-Light-Promoted Glycosylation. Angew Chem Int Ed Engl 2022; 61:e202114726. [PMID: 35133053 DOI: 10.1002/anie.202114726] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Indexed: 01/02/2023]
Abstract
The photoinitiated intramolecular hydroetherification of alkenols has been used to form C-O bonds, but the intermolecular hydroetherification of alkenes with alcohols remains an unsolved challenge. We herein report the visible-light-promoted 2-deoxyglycosylation of alcohols with glycals. The glycosylation reaction was completed within 2 min in a high quantum yield (ϕ=28.6). This method was suitable for a wide array of substrates and displayed good reaction yields and excellent stereoselectivity. The value of this protocol was further demonstrated by the iterative synthesis of 2-deoxyglycans with α-2-deoxyglycosidic linkages up to a 20-mer in length and digoxin with β-2-deoxyglycosidic linkages. Mechanistic studies indicated that this reaction involved a glycosyl radical cation intermediate and a photoinitiated chain process.
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Affiliation(s)
- Kai-Meng Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Peng-Yu Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Zhen-Yan Guo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China.,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Xian-Jin Qin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Miao Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Meng Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Wan-Ying Xue
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
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12
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Abstract
Dense glycosylation and the trimeric conformation of the human immunodeficiency virus-1 (HIV-1) envelope protein limit the accessibility of some cellular glycan processing enzymes and end up with high-mannose-type N-linked glycans on the envelope spike, among which the Man5GlcNAc2 structure occupies a certain proportion. The Man5GlcNAc2 glycan composes the binding sites of some potent broadly neutralizing antibodies, and some lectins that can bind Man5GlcNAc2 show HIV-neutralizing activity. Therefore, Man5GlcNAc2 is a potential target for HIV-1 vaccine development. Herein, a highly convergent and effective strategy was developed for the synthesis of Man5 and its monofluoro-modified, trifluoro-modified, and S-linked analogues. We coupled these haptens to carrier protein CRM197 and evaluated the immunogenicity of the glycoconjugates in mice. The serological assays showed that the native Man5 conjugates failed to induce Man5-specific antibodies in vivo, while the modified analogue conjugates induced stronger antibody responses. However, these antibodies could not bind the native gp120 antigen. These results demonstrated that the immune tolerance mechanism suppressed the immune responses to Man5-related structures and the conformation of glycan epitopes on the synthesized glycoconjugates was distinct from that of native glycan epitopes on gp120.
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Affiliation(s)
- Chang-Cheng Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Chang-Xin Huo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Canjia Zhai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
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13
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Ye XS, Lin X, Liu JJ, Shi Y, Qian F, Yu PW, Zhao YL. [Comparison of clinical efficacy and quality of life between uncut Roux-en-Y and Billroth II with Braun anastomosis in laparoscopic distal gastrectomy for gastric cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:166-172. [PMID: 35176829 DOI: 10.3760/cma.j.cn441530-20210702-00257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the clinical efficacy and quality of life between uncut Roux-en-Y and Billroth II with Braun anastomosis in laparoscopic distal gastrectomy for gastric cancer patients. Methods: A retrospective cohort study was performed. Inclusion criteria: (1) 18 to 75 years old; (2) gastric cancer proved by preoperative gastroscopy, CT and pathological results and tumor was suitable for D2 radical distal gastrectomy; (3) postoperative pathological diagnosis stage was T1-4aN0-3M0 (according to the AJCC-7th TNM tumor stage), and the margin was negative; (4) Eastern Cooperative Oncology Group (ECOG) physical status score <2 points, and American Association of Anesthesiologists (ASA) grade 1 to 3; (5) no mental illness; (6) able to answer questionnaires independently; (7) patients agreed to undergo laparoscopic distal gastrectomy and signed an informed consent. Exclusion criteria: (1) patients with severe chronic diseases and American Association of Anesthesiologists (ASA) grade >3; (2) patients with other malignant tumors; (3) patients suffered from serious mental diseases; (4) patients received neoadjuvant chemotherapy or immunotherapy. According to the above criteria, clinical data of 200 patients who underwent laparoscopic distal gastrectomy at the Department of General Surgery of the First Affiliated Hospital of Army Medical University from January 2016 to December 2019 were collected. Of the 200 patients, 108 underwent uncut Roux-en-Y anastomosis and 92 underwent Billroth II with Braun anastomosis. The general data, intraoperative and postoperative conditions, complications, and endoscopic evaluation 1 year after the surgery were compared. Besides, the quality of life of two groups was also compared using the Chinese version of the European Organization For Research and Treatment of Cancer (EORTC) quality of life questionnaire-Core 30 (QLQ-C30) and quality of life questionnaire-stomach 22 (QLQ-STO22). Results: There were no significant differences in baseline data between the two groups (all P>0.05). All the 200 patients successfully underwent laparoscopic distal gastrectomy without intraoperative complications, conversion to open surgery or perioperative death. There were no significant differences between two groups in operative time, intraoperative blood loss, postoperative complications, time to flatus, time to removal of gastric tube, time to liquid diet, time to removal of drainage tube or length of postoperative hospital stay (all P>0.05). Endoscopic evaluation was conducted 1 year after surgery. Compared to Billroth II with Braun group, the uncut Roux-en-Y group had a significantly lower incidences of gastric stasis [19.8% (17/86) vs. 37.0% (27/73), χ(2)=11.199, P=0.024], gastritis [11.6% (10/86) vs. 34.2% (25/73), χ(2)=20.892, P<0.001] and bile reflux [1.2% (1/86) vs. 28.8% (21/73), χ(2)=25.237, P<0.001], and the differences were statistically significant. The EORTC questionnaire was performed 1 year after surgery, there were no significant differences in the scores of QLQ-C30 scale between the two groups (all P>0.05), while the scores of QLQ-STO22 showed that, compared to the Billroth II with Braun group, the uncut Roux-en-Y group had a lower pain score (median: 8.3 vs. 16.7, Z=-2.342, P=0.019) and reflux score (median: 0 vs 5.6, Z=-2.284, P=0.022), and the differences were statistically significant (all P<0.05), indicating milder symptoms. Conclusion: The uncut Roux-en-Y anastomosis is safe and reliable in laparoscopic distal gastrectomy, which can reduce the incidences of gastric stasis, gastritis and bile reflux, and improve the quality of life of patients after surgery.
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Affiliation(s)
- X S Ye
- Department of General Surgery, The First Affiliated Hospital, The Army Medical University, Chongqing 400038, China
| | - X Lin
- Department of General Surgery, The First Affiliated Hospital, The Army Medical University, Chongqing 400038, China
| | - J J Liu
- Department of General Surgery, The First Affiliated Hospital, The Army Medical University, Chongqing 400038, China
| | - Y Shi
- Department of General Surgery, The First Affiliated Hospital, The Army Medical University, Chongqing 400038, China
| | - F Qian
- Department of General Surgery, The First Affiliated Hospital, The Army Medical University, Chongqing 400038, China
| | - P W Yu
- Department of General Surgery, The First Affiliated Hospital, The Army Medical University, Chongqing 400038, China
| | - Y L Zhao
- Department of General Surgery, The First Affiliated Hospital, The Army Medical University, Chongqing 400038, China
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14
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Abstract
Herein, the convenient one-step electrochemical bromination of glycals using Bu4NBr as the brominating source under metal-catalyst-free and oxidant-free reaction conditions was described. A series of 2-bromoglycals bearing different electron-withdrawing or electron-donating protective groups were successfully synthesized in moderate to excellent yields. The coupling of tri-O-benzyl-2-bromogalactal with phenylacetylene, potassium phenyltrifluoroborate, or a 6-OH acceptor was achieved to afford 2C-branched carbohydrates and disaccharides via Sonogashira coupling, Suzuki coupling, and Ferrier rearrangement reactions with high efficiency. The radical trapping and cyclic voltammetry experiments indicated that bromine radicals may be involved in the reaction process.
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Affiliation(s)
- Zhao-Xiang Luo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Miao Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Tian Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China.,State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
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15
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Wu X, Wu B, Gao CF, Ye XS, Xiong DC. Additive-controlled synthesis of 1- and 2-dexoysugars from thioglycosides. J Carbohydr Chem 2021. [DOI: 10.1080/07328303.2021.2015366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Xia Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Biao Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Chen-Fei Gao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
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16
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Chen YF, Shao GC, Li J, Yang AQ, Li J, Ye XS. O-GlcNAcylation of Blimp-1 in lymphocytes inhibits its transcriptional function and is associated with migration and invasion of breast cancer cells. Mol Cancer Res 2021; 20:650-660. [PMID: 34907035 DOI: 10.1158/1541-7786.mcr-21-0405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 09/22/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022]
Abstract
Lymphocyte infiltration is an important feature of cancer. There is a complex network of chemokines that influence the degree and phenotype of lymphocyte infiltration, as well as the growth, survival, migration and angiogenesis of tumor cells. High heterogeneity metastasis is a major obstacle to the treatment of breast cancer. Herein, we showed that O-GlcNAcylation of B lymphocyte-induced maturation protein-1 (Blimp-1) in lymphocytes inhibited the migration and invasion of breast cancer cells. It was found that Blimp-1 O-GlcNAcylation at Ser448 and Ser472 in lymphocytes promoted its nuclear localization, and blocked the bindings to three regions upstream of the ccl3l1 promoter to inhibit its expression. Decreased expression of CCL3L1 in lymphocytes not only decreased CCR5 expression in breast cancer cells, but also inhibited the membrane localization and activation of CCR5, thus blocking the migration and invasion of breast cancer cells in vitro. Therefore, O-GlcNAcylation of Blimp-1 in lymphocytes may serve as a new target for the treatment of metastatic breast cancer. Implications: This study reveals a new mechanism by which the lymphatic system promotes breast cancer cell metastasis.
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Affiliation(s)
- Yan-Fang Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences,, Peking University
| | | | - Jie Li
- Capital Normal University
| | | | | | - Xin-Shan Ye
- School of Pharmaceutical Sciences, Peking University
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17
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Abstract
Carbohydrates play essential roles in various physiological and pathological processes. Trifluoromethylated compounds have wide applications in the field of medicinal chemistry. Herein, we report a practical and efficient trifluoromethylation of glycals by an electrochemical approach using CF3SO2Na as the trifluoromethyl source and MnBr2 as the redox mediator. A variety of trifluoromethylated glycals bearing different protective groups are obtained in 60-90% yields with high regioselectivity. The successful capture of a CF3 radical indicates that a radical mechanism is involved in this reaction.
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Affiliation(s)
- Miao Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Zhao-Xiang Luo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Tian Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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18
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Deng L, Song C, Niu Y, Li Q, Wang M, Wu YF, Ye XS. Synthesis and biological evaluation of bergenin derivatives as new immunosuppressants. RSC Med Chem 2021; 12:1968-1976. [PMID: 34825192 DOI: 10.1039/d1md00210d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/22/2021] [Indexed: 11/21/2022] Open
Abstract
Bergenin, which is isolated from Bergenia species, exhibits various pharmacological properties. In the search for new types of immunosuppressants, a series of bergenin derivatives were designed and synthesized, and their immunosuppressive effects were evaluated by the CCK-8 assay. The experimental data demonstrated that compounds 7 and 13 showed the strongest inhibition effects on mouse splenocyte proliferation (IC50 = 3.52 and 5.39 μM, respectively). Further studies revealed that the inhibitory effect may come from the suppression of both IFN-γ and IL-4 cytokines. Alkylated derivatives of bergenin with n-hexyl and n-heptyl on the two phenolic hydroxyl groups showed better inhibitory activities. The hydrophobicity of bergenin derivatives, the configuration of the 4-OH in bergenin, and the ability to form hydrogen bonds of the substituents on the C-4 position are important to the immunosuppressive activity. This work proved that the modifications of bergenin may represent a new route to the discovery of a new class of immunosuppressive agents.
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Affiliation(s)
- Lihua Deng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China .,Engineering Research Center of Glycoconjugates, Ministry of Education, Jilin Provincial Key Laboratory of Chemistry and Biology of Changbai Mountain Natural Drugs, School of Life Sciences, Northeast Normal University Changchun 130024 China
| | - Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Meng Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Yan-Fen Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Road No. 38 Beijing 100191 China
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19
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Chen YF, Zhu JJ, Li J, Ye XS. O-GlcNAcylation increases PYGL activity by promoting phosphorylation. Glycobiology 2021; 32:101-109. [PMID: 34939084 DOI: 10.1093/glycob/cwab114] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 10/20/2021] [Accepted: 10/31/2021] [Indexed: 12/18/2022] Open
Abstract
O-GlcNAcylation is a post-translational modification that links metabolism with signal transduction. High O-GlcNAcylation appears to be the general characteristic of cancer cells. It promotes the invasion, metastasis, proliferation and survival of tumor cells, and alters many metabolic pathways. Glycogen metabolism increases in a wide variety of tumors, suggesting that it is an important aspect of cancer pathophysiology. Herein we focused on the O-GlcNAcylation of liver glycogen phosphorylase (PYGL), an important catabolism enzyme in the glycogen metabolism pathway. PYGL expressed in both HEK 293 T and HCT116 were modified by O-GlcNAc. And both PYGL O-GlcNAcylation and phosphorylation of Ser15 (pSer15) were decreased under glucose and insulin, while increased under glucagon and Na2S2O4 (hypoxia) conditions. Then, we identified the major O-GlcNAcylation site to be Ser430, and demonstrated that pSer15 and Ser430 O-GlcNAcylation were mutually reinforced. Lastly, we found that Ser430 O-GlcNAcylation was fundamental for PYGL activity. Thus, O-GlcNAcylation of PYGL positively regulated pSer15 and therefore its enzymatic activity. Our results provided another molecular insight into the intricate post-translational regulation network of PYGL.
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Affiliation(s)
- Yan-Fang Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Jing-Jing Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Jing Li
- Beijing Key Laboratory of DNA Damage Response and College of Life Sciences, Capital Normal University, Beijing, 100048, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
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20
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Cao Y, Zhou M, Mao RZ, Zou Y, Xia F, Liu DK, Liu J, Li Q, Xiong DC, Ye XS. Visible-light-promoted 3,5-dimethoxyphenyl glycoside activation and glycosylation. Chem Commun (Camb) 2021; 57:10899-10902. [PMID: 34590634 DOI: 10.1039/d1cc04473g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A new glycosylation method promoted by visible light with 3,5-dimethoxyphenyl glycoside as the donor was developed. This protocol delivers both O-glycosides and N-glycosides in moderate to excellent yields using a wide range of O-nucleophiles and nucleobases as the glycosyl acceptors.
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Affiliation(s)
- Yafei Cao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - Minmin Zhou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China. .,School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Run-Ze Mao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - You Zou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - Feng Xia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - Da-Ke Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - Jianhui Liu
- School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China. .,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210023, Jiangsu, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
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21
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Li G, Ma W, Mo J, Cheng B, Shoda SI, Zhou D, Ye XS. Influenza Virus Precision Diagnosis and Continuous Purification Enabled by Neuraminidase-Resistant Glycopolymer-Coated Microbeads. ACS Appl Mater Interfaces 2021; 13:46260-46269. [PMID: 34547894 DOI: 10.1021/acsami.1c11561] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Rapid diagnosis and vaccine development are critical to prevent the threat posed by viruses. However, rapid tests, such as colloidal gold assays, yield false-negative results due to the low quantities of viruses; moreover, conventional virus purification, including ultracentrifugation and nanofiltration, is multistep and time-consuming, which limits laboratory research and commercial development of viral vaccines. A rapid virus enrichment and purification technique will improve clinical diagnosis sensitivity and simplify vaccine production. Hence, we developed the surface-glycosylated microbeads (glycobeads) featuring chemically synthetic glycoclusters and reversible linkers to selectively capture the influenza virus. The surface plasmon resonance (SPR) evaluation indicated broad spectrum affinity of S-linked glycosides to various influenza viruses. The magnetic glycobeads were integrated into clinical rapid diagnosis, leading to a 30-fold lower limit of detection. Additionally, the captured viruses can be released under physiological conditions, delivering purified viruses with >50% recovery and without decreasing their native infectivity. Notably, this glycobead platform will facilitate the sensitive detection and continuous one-step purification of the target virus that contributes to future vaccine production.
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Affiliation(s)
- Gefei Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Wenxiao Ma
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Juan Mo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Boyang Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Shin-Ichiro Shoda
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, 6-6-11, Aoba, Aoba-ku, Sendai 980-8579, Japan
| | - Demin Zhou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
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22
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Abstract
Glycans have been hot topics in recent years due to their exhibition of numerous biological activities. However, the heterogeneity of their natural source and the complexity of their chemical synthesis impede the progress in their biological research. Thus, the development of glycan assembly strategies to acquire plenty of structurally well-defined glycans is an important issue in carbohydrate chemistry. In this review, the latest advances in glycan assembly strategies from concepts to their applications in carbohydrate synthesis, including chemical and enzymatic/chemo-enzymatic approaches, as well as solution-phase and solid-phase/tag-assisted synthesis, are summarized. Furthermore, the automated glycan assembly techniques are also outlined.
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Affiliation(s)
- Mingli Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xianjin Qin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
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23
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Zhang ZP, Xue WY, Hu JX, Xiong DC, Wu YF, Ye XS. Novel carbohydrate-triazole derivatives as potential α-glucosidase inhibitors. Chin J Nat Med 2021; 18:729-737. [PMID: 33039052 DOI: 10.1016/s1875-5364(20)60013-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Indexed: 10/23/2022]
Abstract
A series of novel pyrano[2, 3-d]trizaole compounds were synthesized and their α-glucosidase inhibitory activities were evaluated by in vitro enzyme assay. The experimental data demonstrated that compound 10f showed up to 10-fold higher inhibition (IC5074.0 ± 1.3 μmol·L-1) than acarbose. The molecular docking revealed that compound 10f could bind to α-glucosidase via the hydrophobic, π-π stacking, and hydrogen bonding interactions. The results may benefit further structural modifications to find new and potent α-glucosidase inhibitors.
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Affiliation(s)
- Zi-Pei Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Wan-Ying Xue
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Jian-Xing Hu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Yan-Fen Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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24
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Zhai C, Zheng XJ, Song C, Ye XS. Synthesis and immunological evaluation of N-acyl modified Globo H derivatives as anticancer vaccine candidates. RSC Med Chem 2021; 12:1239-1243. [PMID: 34355188 DOI: 10.1039/d1md00067e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 05/17/2021] [Indexed: 12/13/2022] Open
Abstract
Globo H is a tumor-associated carbohydrate antigen (TACA), which serves as a valuable target for antitumor vaccine or cancer immunotherapies. However, most TACAs are T-cell-independent, and they cannot induce powerful immune response due to their poor immunogenicity. To address this problem, herein, several Globo H analogues with modification on the N-acyl group were prepared through a preactivation-based glycosylation strategy from the non-reducing end to the reducing end. These modified Globo H derivatives were then conjugated with carrier protein CRM197 to form glycoconjugates as anticancer vaccine candidates, which were used in combination with adjuvant glycolipid C34 for immunological studies. The immunological effects of these synthetic vaccine candidates were evaluated on Balb/c mice. The results showed that the fluorine-modified N-acyl Globo H conjugates can induce higher titers of IgG antibodies that can recognize the naturally occurring Globo H antigen on the surface of cancer cells and can eliminate cancer cells in the presence of a complement, indicating the potential of these synthetic glycoconjugates as anticancer vaccine candidates.
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Affiliation(s)
- Canjia Zhai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd No. 38 Beijing 100191 China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd No. 38 Beijing 100191 China
| | - Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd No. 38 Beijing 100191 China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Xue Yuan Rd No. 38 Beijing 100191 China
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25
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Wang M, Wang Y, Liu K, Dou X, Liu Z, Zhang L, Ye XS. Engineering a bacterial sialyltransferase for di-sialylation of a therapeutic antibody. Org Biomol Chem 2020; 18:2886-2892. [PMID: 32236230 DOI: 10.1039/d0ob00276c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Terminal α-2,6-sialylation of N-glycans is a humanized glycosylation that affects the properties and efficacy of therapeutic glycoproteins. Fc di-sialylation (a biantennary N-glycan with two α-2,6-linked sialic acids) of IgG antibodies imparts them with enhanced anti-inflammatory activity and other roles. However, the microheterogeneity of N-glycoforms presents a challenge for therapeutic development. Therefore, controlled sialylation has drawn considerable attention, but direct access to well-defined di-sialylated antibodies remains limited. Herein, a one-pot three-enzyme protocol was developed by engineering a bacterial sialyltransferase to facilitate the modification of therapeutic antibodies with N-acetylneuraminic acid or its derivatives towards optimized glycosylation. To overcome the low proficiency of bacterial sialyltransferase in antibody remodeling, the Photobacterium sp. JT-ISH-224 α-2,6-sialyltransferase (Psp2,6ST) was genetically engineered by terminal truncation and site-directed mutagenesis based on its protein crystal structure. With the optimized reaction conditions and using activity-based screening of various Psp2,6ST variants, a truncated mutant Psp2,6ST (111-511)-His6 A235M/A366G was shown to effectively improve the catalytic efficiency of antibody di-sialylation. Herceptin and the donor substrate promiscuity allow the introduction of bioorthogonal modifications of N-acetylneuraminic acid into antibodies for site-specific conjugation. 2-AB hydrophilic interaction chromatography analysis of the released N-glycans and intact mass characterization confirmed the high di-sialylation of Herceptin via the optimized one-pot three-enzyme reaction. This study established a versatile enzymatic approach for producing highly di-sialylated IgG antibodies. It provides new insights into engineering bacterial sialyltransferase for adaptation to the enzymatic glycoengineering of therapeutic antibodies and the glycosite-specific conjugation of antibodies.
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Affiliation(s)
- Mingqun Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd No. 38, Beijing 100191, China.
| | - Yue Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd No. 38, Beijing 100191, China.
| | - Kaimeng Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd No. 38, Beijing 100191, China.
| | - Xiaodong Dou
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd No. 38, Beijing 100191, China.
| | - Zhenming Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd No. 38, Beijing 100191, China.
| | - Liangren Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd No. 38, Beijing 100191, China.
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd No. 38, Beijing 100191, China.
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26
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Abstract
A novel transformation from rhamnose-type C-glycosides to 2-cyclopentenones is described. With the promotion of fluoroboric acid, C-glycosides underwent ring opening and subsequent Nazarov cyclization to afford 2-cyclopentenones in good to excellent yields. The solvent and the concentration of acid are crucial to the yield of this transformation.
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Affiliation(s)
- Qiannan Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Shengbiao Tang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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27
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Liu M, Liu KM, Xiong DC, Zhang H, Li T, Li B, Qin X, Bai J, Ye XS. Stereoselective Electro-2-deoxyglycosylation from Glycals. Angew Chem Int Ed Engl 2020; 59:15204-15208. [PMID: 32394599 DOI: 10.1002/anie.202006115] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Indexed: 11/09/2022]
Abstract
We report a novel and highly stereoselective electro-2-deoxyglycosylation from glycals. This method features excellent stereoselectivity, scope, and functional-group tolerance. This process can also be applied to the modification of a wide range of natural products and drugs. Furthermore, a scalable synthesis of glycosylated podophyllotoxin and a one-pot trisaccharide synthesis through iterative electroglycosylations were achieved.
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Affiliation(s)
- Miao Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Kai-Meng Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China.,Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 27 Shanda Nanlu, Jinan, Shandong, 250100, China
| | - Hanyu Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Tian Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Bohan Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xianjin Qin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Jinhe Bai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
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28
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Abstract
Carbohydrates play important roles in life science, but their synthesis is always hampered by their complicated chemical structures. Scientists have never stopped trying to solve the problem of glycan synthesis from various aspects. Here a brief overview of recent progress in glycan synthesis, including chemical approaches, chemoenzymatic approaches, and automated synthesis, will be discussed, focusing on the efficiency of new glycosylation methods, the stereoselectivity of coupled products, and their applications in the assembly of complex glycan chains.
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Affiliation(s)
- Bo-Han Li
- Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China.
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29
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Abstract
The C-glycosylation of C-nucleophiles including allyltrimethylsilane, silyl enol ethers and phenols with N-(glycosyloxy)acetamides as glycosyl donors has been realized. This protocol provides a convenient and practical route for the synthesis of alkyl C-glycosides and aryl 2-deoxy-β-C-glycosides under mild reaction conditions.
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Affiliation(s)
- Miao Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Bo-Han Li
- Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Tian Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Xia Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Meng Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.
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30
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Li BH, Yao W, Yang H, Wu C, Xiong DC, Yin Y, Ye XS. Total synthesis of tumor-associated KH-1 antigen core nonasaccharideviaphoto-induced glycosylation. Org Chem Front 2020. [DOI: 10.1039/d0qo00314j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
KH-1 antigen core nonasaccharide was efficiently assembled by photo-induced glycosylation.
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Affiliation(s)
- Bo-Han Li
- Institute of Systems Biomedicine
- Department of Pathology
- Beijing Key Laboratory of Tumor Systems Biology
- School of Basic Medical Sciences
- Peking University Health Science Center
| | - Wenlong Yao
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Hong Yang
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Congying Wu
- Institute of Systems Biomedicine
- Department of Pathology
- Beijing Key Laboratory of Tumor Systems Biology
- School of Basic Medical Sciences
- Peking University Health Science Center
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Yuxin Yin
- Institute of Systems Biomedicine
- Department of Pathology
- Beijing Key Laboratory of Tumor Systems Biology
- School of Basic Medical Sciences
- Peking University Health Science Center
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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31
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Song C, Zheng XJ, Guo H, Cao Y, Zhang F, Li Q, Ye XS, Zhou Y. Fluorine-modified sialyl-Tn-CRM197 vaccine elicits a robust immune response. Glycoconj J 2019; 36:399-408. [PMID: 31267246 DOI: 10.1007/s10719-019-09884-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/17/2019] [Accepted: 06/21/2019] [Indexed: 01/28/2023]
Abstract
Even though a vaccine that targets tumor-associated carbohydrate antigens on epithelial carcinoma cells presents an attractive therapeutic approach, relatively poor immunogenicity limits its development. In this study, we investigated the immunological activity of a fluoro-substituted Sialyl-Tn (F-STn) analogue coupled to the non-toxic cross-reactive material of diphtheria toxin197 (CRM197). Our results indicate that F-STn-CRM197 promotes a greater immunogenicity than non-fluorinated STn-CRM197. In the presence or absence of adjuvant, F-STn-CRM197 remarkably enhances both cellular and humoral immunity against STn by increasing antigen-specific lymphocyte proliferation and inducing a mixed Th1/Th2 response leading to production of IFN-γ and IL-4 cytokines, as well as STn-specific antibodies. Furthermore, antisera produced from F-STn-CRM197 immunization significantly recognizes STn-positive tumor cells and increases cancer cell lysis induced by antibody-dependent cell-mediated cytotoxicity (ADCC) or complement-dependent cytotoxicity (CDC) pathways. Our data suggest that this F-STn vaccine may be useful for cancer immunotherapy and possibly for prophylactic prevention of cancer.
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MESH Headings
- Adjuvants, Immunologic/administration & dosage
- Animals
- Antibodies, Neoplasm/isolation & purification
- Antibodies, Neoplasm/pharmacology
- Antibody-Dependent Cell Cytotoxicity/drug effects
- Antigens, Tumor-Associated, Carbohydrate/chemistry
- Antigens, Tumor-Associated, Carbohydrate/immunology
- Bacterial Proteins/chemistry
- Bacterial Proteins/immunology
- Bacterial Proteins/pharmacology
- Cancer Vaccines/chemical synthesis
- Cancer Vaccines/immunology
- Cancer Vaccines/pharmacology
- Cell Line, Tumor
- Colonic Neoplasms/immunology
- Colonic Neoplasms/pathology
- Colonic Neoplasms/therapy
- Female
- Gene Expression
- Glycoconjugates/chemical synthesis
- Glycoconjugates/immunology
- Glycoconjugates/pharmacology
- Halogenation
- Humans
- Immune Sera/chemistry
- Immune Sera/pharmacology
- Immunity, Cellular/drug effects
- Immunity, Humoral/drug effects
- Immunization
- Immunogenicity, Vaccine
- Interferon-gamma/genetics
- Interferon-gamma/immunology
- Interleukin-4/genetics
- Interleukin-4/immunology
- Lymphocytes/drug effects
- Lymphocytes/immunology
- Mice
- Mice, Inbred BALB C
- Spleen/drug effects
- Spleen/immunology
- Th1-Th2 Balance
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Affiliation(s)
- Chengcheng Song
- School of Life Sciences, Northeast Normal University, Changchun, 130024, China
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Haili Guo
- School of Life Sciences, Northeast Normal University, Changchun, 130024, China
| | - Yafei Cao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Fan Zhang
- School of Life Sciences, Northeast Normal University, Changchun, 130024, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.
| | - Yifa Zhou
- School of Life Sciences, Northeast Normal University, Changchun, 130024, China.
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32
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Abstract
A new glycosylation protocol based on 2′-benzoylphenyl glycosides has been developed. These glycosyl donors could be rapidly activated by TfOH at room temperature.
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Affiliation(s)
- Da-Ke Liu
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xia Wu
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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33
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34
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Abstract
A novel glycosylation protocol has been established by using N-(glycosyloxy)acetamides as glycosyl donors. The N-oxyacetamide leaving group in donors could be rapidly activated in the presence of Cu(OTf)2 or SnCl4 under microwave irradiation. This glycosylation process afforded the coupled products in high yields, and the reaction enjoyed a broad substrate scope, even for disarmed donors and hindered acceptors. The easy availability of the donors, the high stability of N-(glycosyloxy)acetamides, and the small leaving group make this method very practical.
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Affiliation(s)
- Miao Liu
- National Research Center for Carbohydrate Synthesis , Jiangxi Normal University , Nanchang 330022 , China.,State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China
| | - Bo-Han Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China.,State Key Laboratory of Drug Research , Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai 201203 , China
| | - Xin-Shan Ye
- National Research Center for Carbohydrate Synthesis , Jiangxi Normal University , Nanchang 330022 , China.,State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Beijing 100191 , China
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35
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Tang S, Zheng Q, Xiong DC, Jiang S, Li Q, Ye XS. Stereocontrolled Synthesis of 2-Deoxy- C-glycopyranosyl Arenes Using Glycals and Aromatic Amines. Org Lett 2018; 20:3079-3082. [PMID: 29737178 DOI: 10.1021/acs.orglett.8b01117] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An efficient and stereoselective one-pot, two-step tandem α-arylation of glycals from readily available aryl amines via stable diazonium salts has been developed. Moreover, the stereoselective preparation of the challenging β- C-glycosyl arenes by the anomerization of α- C-glycosides using HBF4 is also described. This protocol has a broad substrate scope and a wide functional-group tolerance. It can be used for the gram-scale preparation of 3-oxo- C-glycosides, which are versatile substrates for the preparation of many biologically important C-glycosides.
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Affiliation(s)
- Shengbiao Tang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No. 38 , Beijing 100191 , China.,School of Pharmaceutical Science and Technology , Tianjin University , Tianjin 300072 , China
| | - Qiannan Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No. 38 , Beijing 100191 , China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No. 38 , Beijing 100191 , China.,State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica , Chinese Academy of Sciences , Shanghai 200031 , China
| | - Shende Jiang
- School of Pharmaceutical Science and Technology , Tianjin University , Tianjin 300072 , China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No. 38 , Beijing 100191 , China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No. 38 , Beijing 100191 , China
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36
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Zhang GL, Ye XS. Frontispiece: Synthetic Glycans and Glycomimetics: A Promising Alternative to Natural Polysaccharides. Chemistry 2018. [DOI: 10.1002/chem.201882663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gao-Lan Zhang
- State Key Laboratory of National and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 10091 P. R. China
| | - Xin-Shan Ye
- State Key Laboratory of National and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 10091 P. R. China
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37
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Song C, Zheng XJ, Liu CC, Zhou Y, Ye XS. A cancer vaccine based on fluorine-modified sialyl-Tn induces robust immune responses in a murine model. Oncotarget 2018; 8:47330-47343. [PMID: 28537884 PMCID: PMC5564568 DOI: 10.18632/oncotarget.17646] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 04/19/2017] [Indexed: 12/13/2022] Open
Abstract
Development of an effective vaccine to target tumor associated carbohydrate antigens, aberrantly expressed on the cell surface of various carcinomas, is an appealing approach toward cancer immunotherapy. However, a major problem of carbohydrate antigens is their poor immunogenicity. Immunization with modified-carbohydrate antigens could improve the immunogenicity and induce cross reaction with the native carbohydrate antigens. In this study, we investigated the antitumor ability of three fluoro-substituted sialyl-Tn (STn) analogues (2, 3, 4) coupled to KLH (keyhole limpet hemocyanin) and studied the mechanism of tumor immunotherapy of the vaccines in a murine model of colon cancer. Vaccination with 4-KLH, in which the two N-acetyl groups of STn are substituted with N-fluoroacetyl groups, could remarkably prolong the survival of tumor-bearing mouse and resulted in a significant reduction in tumor burden of lungs compared with STn-KLH (1-KLH). The vaccine 4-KLH could provoke stronger cytotoxic T lymphocytes immune response, T helper (Th) cell-mediated immune response and an earlier-stage Th1 immune response than 1-KLH, thus breaking immune tolerance and generating a therapeutic response. The 4-KLH vaccine induced strong tumor-specific anti-STn antibodies which could mediate complement-dependent cytotoxicity and antibody-dependent cell-mediated cytotoxicity against human tumor cells. Moreover, in the absence of adjuvant, 4-KLH still elicited stronger immune responses than 1-KLH. Our data suggested that 4-KLH is superior in tumor prevention. The strategic hapten fluorination may be a potential approach applicable to the vaccines development for the cancer immunotherapy.
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Affiliation(s)
- Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China.,School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Chang-Cheng Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Yifa Zhou
- School of Life Sciences, Northeast Normal University, Changchun 130024, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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38
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Niu Y, Wang M, Cao Y, Nimmagadda A, Hu J, Wu Y, Cai J, Ye XS. Rational Design of Dimeric Lysine N-Alkylamides as Potent and Broad-Spectrum Antibacterial Agents. J Med Chem 2018; 61:2865-2874. [PMID: 29569910 DOI: 10.1021/acs.jmedchem.7b01704] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Antibiotic resistance is one of the biggest threats to public health, and new antibacterial agents hence are in an urgent need to combat infectious diseases caused by multidrug-resistant (MDR) pathogens. Utilizing dimerization strategy, we rationally designed and efficiently synthesized a new series of small molecule dimeric lysine alkylamides as mimics of AMPs. Evaluation of these mimics against a panel of Gram-positive and Gram-negative bacteria including MDR strains was performed, and a broad-spectrum and potent compound 3d was identified. This compound displayed high specificity toward bacteria over mammalian cell. Time-kill kinetics and mechanistic studies suggest that compound 3d quickly eliminated bacteria in a bactericidal mode by disrupting bacterial cell membrane. In addition, lead compound 3d could inhibit biofilm formation and did not develop drug resistance in S. aureus and E. coli over 14 passages. These results suggested that dimeric lysine nonylamide has immense potential as a new type of novel small molecular agent to combat antibiotic resistance.
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Affiliation(s)
- Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Minghui Wang
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Yafei Cao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Alekhya Nimmagadda
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Jianxing Hu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Yanfen Wu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
| | - Jianfeng Cai
- Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , United States
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences , Peking University , Xue Yuan Road No.38 , Beijing 100191 , China
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Wei MM, Wang YS, Ye XS. Carbohydrate-based vaccines for oncotherapy. Med Res Rev 2018; 38:1003-1026. [PMID: 29512174 DOI: 10.1002/med.21493] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 01/18/2018] [Accepted: 01/31/2018] [Indexed: 01/02/2023]
Abstract
Cancer is still one of the most serious threats to human worldwide. Aberrant patterns of glycosylation on the surface of cancer cells, which are correlated with various cancer development stages, can differentiate the abnormal tissues from the healthy ones. Therefore, tumor-associated carbohydrate antigens (TACAs) represent the desired targets for cancer immunotherapy. However, these carbohydrate antigens may not able to evoke powerful immune response to combat with cancer for their poor immunogenicity and immunotolerance. Different approaches have been developed to address these problems. In this review, we want to summarize the latest advances in TACAs based anticancer vaccines.
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Affiliation(s)
- Meng-Man Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Yong-Shi Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
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Abstract
A large quantity of polysaccharide-derived conjugate vaccines have been developed to combat various pathogenic infections. Another prominent polysaccharide, heparin, is listed as an essential drug by the World Health Organization (WHO) to treat thrombus. One of their common problems is that they all derive from natural polysaccharides. Specifically, capsular polysaccharides are mainly obtained from bacterial fermentation and unfractionated heparin is extracted from animal tissues such as porcine mucosa. The quality of natural polysaccharides is inconsistent and traces of contamination would cause a disaster. By contrast, the use of chemical or chemoenzymatic methods could provide structurally homogeneous and quality-controlled glycans. To date, large numbers of polysaccharide fragments and their analogues have been synthesized and evaluated. Some of them even showed comparable activities to their corresponding natural polysaccharides. Here, the latest advances in these synthetic glycan analogues ranging from carbohydrate-based vaccines, heparin-related therapeutics and glycomimetics of polysaccharides are summarized.
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Affiliation(s)
- Gao-Lan Zhang
- State Key Laboratory of National and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 10091, P. R. China
| | - Xin-Shan Ye
- State Key Laboratory of National and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 10091, P. R. China
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Lv Z, Song C, Niu Y, Li Q, Ye XS. Synthesis of N-Substituted Iminosugar Derivatives and Evaluation of Their Immunosuppressive Activities. ChemMedChem 2018; 13:338-351. [PMID: 29323471 DOI: 10.1002/cmdc.201700706] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 12/24/2017] [Indexed: 01/28/2023]
Abstract
It is important to find more effective and safer immunosuppressants, because clinically used immunosuppressive agents have significant side effects. A series of N-substituted iminosugar derivatives were designed and synthesized, and their immunosuppressive effects were evaluated by the CCK-8 assay. The results revealed that iminosugars 10 e and 10 i, that is, (3R,4S)-1-(4-heptyloxylphenylethyl)pyrrolidine-3,4-diol and (3R,4S)-1-[2-(2-chloro-4-(p-tolylthio)-phenyl-1-yl)ethyl]pyrrolidine-3,4-diol, respectively, exhibited the strongest inhibitory effects on mouse splenocyte proliferation (IC50 =2.16 and 2.48 μm, respectively), whereas the iminosugars containing an amide group near the hydrophilic head (compounds 10 j-n) exhibited no inhibitory effects. Further studies revealed that the inhibitory effects on splenocyte proliferation may have come from the suppression of both IFN-γ and IL-4 cytokines. Our results suggest that synthetic iminosugars, especially compounds 10 e and 10 i, hold potential as immunosuppressive agents.
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Affiliation(s)
- Zhuo Lv
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing, 100191, China
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Zhang GL, Wei MM, Song C, Ma YF, Zheng XJ, Xiong DC, Ye XS. Chemical synthesis and biological evaluation of penta- to octa- saccharide fragments of Vi polysaccharide fromSalmonella typhi. Org Chem Front 2018. [DOI: 10.1039/c8qo00471d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The penta- to octa-saccharide fragments of Vi polysaccharide were synthesized efficiently, and the hexasaccharide might be the minimum epitope of Vi antigen based on ELISA analysis.
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Affiliation(s)
- Gao-Lan Zhang
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Meng-Man Wei
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Chengcheng Song
- School of Life Sciences
- Northeast Normal University
- Changchun 130024
- China
| | - Yu-Feng Ma
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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Mao R, Sun L, Wang YS, Zhou MM, Xiong DC, Li Q, Ye XS. N -9 Alkylation of purines via light-promoted and metal-free radical relay. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.08.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Liu HQ, Song CC, Niu YH, Li T, Li Q, Ye XS. Synthesis and biological evaluation of N-arylated-lactam-type iminosugars as potential immunosuppressive agents. Org Biomol Chem 2017; 15:5912-5919. [PMID: 28670651 DOI: 10.1039/c7ob01110e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since the immunosuppressive agents currently used in clinics have significant side effects, it is very important to search for new effective and safe immunosuppressants. Iminosugars as a new class of immunosuppressants are less explored. In this report, 24 new N-arylated iminosugar derivatives, including d-talo and d-galacto epimers, were designed and synthesized, and their immunosuppressive effects were evaluated by MTT assay. The experimental data demonstrated that compound 20 showed the strongest inhibition effect (IC50 = 6.94 μM). Further studies revealed that the inhibitory effects on splenocyte proliferation may come from the suppression of both IFN-γ and IL-4 cytokines. The preliminary structure-activity relationship (SAR) analysis suggested that N-arylated d-galacto-type iminosugars showed better inhibitory activities than d-talo-type analogues. The SAR analysis also showed that the inhibition effect of iminosugars can be improved by decreasing the polarity or increasing the hydrophobicity. These results may be beneficial to the discovery of new iminosugar derivatives as immunosuppressive agents.
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Affiliation(s)
- Hai-Qian Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China.
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Zhang GL, Yang L, Zhu J, Wei M, Yan W, Xiong DC, Ye XS. Synthesis and Antigenic Evaluation of Oligosaccharide Mimics of Vi Antigen from Salmonella typhi. Chemistry 2017. [DOI: 10.1002/chem.201702114] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Gao-Lan Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Lin Yang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Jingjing Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Mengman Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Wanjun Yan
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
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Yang AQ, Li D, Chi L, Ye XS. Validation, Identification, and Biological Consequences of the Site-specific O-GlcNAcylation Dynamics of Carbohydrate-responsive Element-binding Protein (ChREBP). Mol Cell Proteomics 2017; 16:1233-1243. [PMID: 28450420 PMCID: PMC5500757 DOI: 10.1074/mcp.m116.061416] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 03/22/2017] [Indexed: 11/06/2022] Open
Abstract
O-GlcNAcylation of carbohydrate-responsive element-binding protein (ChREBP) is believed as an important modulator of ChREBP activities, however little direct evidence of O-GlcNAcylation on ChREBP and no exact O-GlcNAcylation sites have been reported so far. Here, we validate O-GlcNAcylation on ChREBP in cell-free coupled transcription/translation system and in cells by chemoenzymatic and metabolic labeling, respectively. Moreover, for the first time, we identify O-GlcNAcylation on Ser614 in the C-terminus of ChREBP by mass spectrometry and validate two important sites, Thr517 and Ser839 for O-GlcNAcylation and their function via molecular and chemical biological method. Under high glucose conditions, Ser514 phosphorylation enhances ChREBP O-GlcNAcylation, maintaining the transcriptional activity of ChREBP; Ser839 O-GlcNAcylation is essential for Mlx-heterodimerization and DNA-binding activity enhancement, consequently inducing transcriptional activity. Ser839 O-GlcNAcylation is also crucial for ChREBP nuclear export partially by strengthening interactions with CRM1 and 14-3-3. This work is a detailed study of ChREBP O-GlcNAcylation and highlights the biological consequences of the site-specific O-GlcNAcylation dynamics of ChREBP.
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Affiliation(s)
- An-Qi Yang
- From the ‡State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd 38, Beijing 100191, China
| | - Daoyuan Li
- §National Glycoengineering Research Center, and State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China
| | - Lianli Chi
- §National Glycoengineering Research Center, and State Key Laboratory of Microbial Technology, Shandong University, Jinan 250100, China
| | - Xin-Shan Ye
- From the ‡State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd 38, Beijing 100191, China;
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47
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Zhang S, Niu YH, Ye XS. General Approach to Five-Membered Nitrogen Heteroaryl C-Glycosides Using a Palladium/Copper Cocatalyzed C–H Functionalization Strategy. Org Lett 2017; 19:3608-3611. [DOI: 10.1021/acs.orglett.7b01583] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Shuo Zhang
- State Key Laboratory of Natural and Biomimetic
Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - You-Hong Niu
- State Key Laboratory of Natural and Biomimetic
Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic
Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road No. 38, Beijing 100191, China
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48
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Affiliation(s)
- Lei Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University, Xue Yuan Road No. 38; Beijing 100191 China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University, Xue Yuan Road No. 38; Beijing 100191 China
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49
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Abstract
In the new transition-state based sialyltransferase inhibitors, an amide group was placed at the corresponding C-2 position of CMP-sialic acid to mimic the geometry and charge distribution in the transition state, and simple aromatic or aliphatic rings were used instead of the sialic acid moiety. All synthetic compounds exhibited excellent α(2-6)-sialyltransferase inhibition, resulting in up to a 2600-fold higher affinity for the enzyme than CMP-Neu5Ac, suggesting that amide is a key element for simulating transition-state features.
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Affiliation(s)
- Jian Guo
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University , Xue Yuan Road no. 38, Beijing 100191, China
| | - Wenming Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University , Xue Yuan Road no. 38, Beijing 100191, China
| | - Weiwei Xue
- School of Pharmaceutical Sciences and Innovative Drug Research Centre, Chongqing University , Daxuecheng South Road no. 55, Chongqing 401331, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University , Xue Yuan Road no. 38, Beijing 100191, China
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50
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Xiao A, Zheng XJ, Song C, Gui Y, Huo CX, Ye XS. Correction: Synthesis and immunological evaluation of MUC1 glycopeptide conjugates bearing N-acetyl modified STn derivatives as anticancer vaccines. Org Biomol Chem 2017; 15:2120-2121. [DOI: 10.1039/c7ob90028g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Synthesis and immunological evaluation of MUC1 glycopeptide conjugates bearing N-acetyl modified STn derivatives as anticancer vaccines’ by An Xiao et al., Org. Biomol. Chem., 2016, 14, 7226–7237.
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Affiliation(s)
- An Xiao
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Yue Gui
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Chang-Xin Huo
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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