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Luo S, Zhang L, Li X, Tong C. Annexin A1 protects periodontal ligament cells against lipopolysaccharide-induced inflammatory response and cellular senescence: An implication in periodontitis. Biotechnol Appl Biochem 2024. [PMID: 39318270 DOI: 10.1002/bab.2675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Accepted: 09/06/2024] [Indexed: 09/26/2024]
Abstract
Periodontitis is an inflammatory condition that affects the tooth-supporting structures, triggered by the host's immune response toward the bacterial deposits around the teeth. Annexin A1 (AnxA1), a vital member of the annexin superfamily, is known for its diverse physiological functions, particularly its anti-inflammatory and anti-senescence properties. We hypothesized that AnxA1 has a protective effect against lipopolysaccharide (LPS)-induced inflammatory responses and cellular damage in periodontal ligament cells (PDLCs). In this study, we demonstrate that LPS stimulation significantly reduced telomerase activity in PDLCs, a decline that was dose-dependently reversed by AnxA1. Importantly, AnxA1 protected the cells from LPS-induced cellular senescence and the downregulation of human telomerase reverse transcriptase (hTERT) expression. In line with this, AnxA1 suppressed the LPS-induced expression of p21 and p16 at both the mRNA and protein levels. Furthermore, AnxA1 demonstrated potent anti-inflammatory effects by inhibiting the secretion of interleukin 6 (IL-6), interleukin 8 (IL-8), and monocyte chemoattractant protein-1 (MCP-1). It also mitigated LPS-induced oxidative stress by reducing the levels of phosphorylated Foxo3a (Ser253) and restored sirtuin 1 (SIRT1) expression. Notably, SIRT1 silencing abolished AnxA1's protective effects on Foxo3a phosphorylation and cellular senescence, suggesting that SIRT1 mediates AnxA1's actions. In conclusion, AnxA1 protected PDLCs against LPS-triggered inflammation and cell senescence by activating SIRT1 signal pathway. These findings indicate that AnxA1 could serve as a promising therapeutic strategy for the treatment of periodontitis.
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Affiliation(s)
- Shuwen Luo
- Department of Stomatology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan, China
| | - Lin Zhang
- Department of Stomatology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan, China
| | - Xiaoyu Li
- Department of Stomatology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan, China
| | - Chunshi Tong
- Department of Stomatology, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, Henan, China
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2
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GUO Y, LUO K, ZHANG L, LU W, SHANG Y, ZHONG Y, HU D, YANG X, ZHOU H. Study on the anti-inflammatory mechanism of moxibustion in rheumatoid arthritis in rats based on phospholipaseA2 signaling inhibition by Annexin 1. J TRADIT CHIN MED 2024; 44:753-761. [PMID: 39066536 PMCID: PMC11337253 DOI: 10.19852/j.cnki.jtcm.20240610.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 07/20/2023] [Indexed: 07/28/2024]
Abstract
OBJECTIVE To determine whether moxibustion had an anti-inflammatory effect on rheumatoid arthritis (RA) by regulating Annexin 1 expression and interfering with the phospholipaseA2 signaling pathway. METHODS Thirty male Sprague-Dawley rats were randomly categorized into five groups (six rats per group): blank control (CON) group, RA model (RA) group, moxibustion (MOX) group, Annexin 1 lentiviral intervention (RNAi-Anxa1) group, and Annexin 1 lentiviral intervention + moxibustion (RNAi-Anxa1 + MOX) group. The rats in the RNAi-Anxa1 and the RNAi-Anxa1 + MOX groups were injected with the lentiviral vector-mediated RNAi-Anxa1 into the rat foot pad. An experimental RA rat model was established by injecting Freund's complete adjuvant (FCA) into the RA, MOX, RNAi-Anxa1, and RNAi-Anxa1 + MOX groups. Rats in the MOX and RNAi-Anxa1 + MOX groups received moxibustion treatment. After modeling, using moxibustion "Shenshu (BL23)" and "Zusanli (ST36)", each point is 5 times, bilateral alternating, once a day, 6 times for a course of treatment, between the courses of rest for a one day. A total of three treatment courses were conducted. Both bilateral pad thicknesses were measured using Vernier calipers on experimental days 1, 7, 14, 21, and 28. The expression of cPLA2α signaling in the synovium of diseased joints was observed using Western blot. The pathology of the rat ankle synovium was observed using hematoxylin-eosin (HE) staining. Interleukin (IL)-1β, IL-10, prostaglandin E2 (PGE2), and leukotriene B4 (LTB4) were detected using enzyme-linked immunosorbent assay. RESULTS Moxibustion increased the levels of Annexin 1 and decreased the inflammatory response in rats with RA. After increasing the expression of Annexin 1, the phosphorylated expression of cPLA2α was inhibited, the serum levels of IL-1β, PGE2, and LTB4 decreased, and the level of IL-10 increased. In moxibustion treated RA rats after the Annexin 1 lentiviral intervention, the serum levels of IL-1β, PGE2, LTB4, and IL-10 were almost unchanged. CONCLUSION Moxibustion enhanced the negative regulation of the cPLA2α signaling pathway, increased the synovial Annexin 1 expression, inhibited the cPLA2α signaling pathway, indirectly inhibited the expression of downstream inflammatory factors, and played a role in reducing inflammation.
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Affiliation(s)
- Yanding GUO
- 1 Department of Acupuncture-Moxibustion and Tuina, the Third Affiliated Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Kun LUO
- 1 Department of Acupuncture-Moxibustion and Tuina, the Third Affiliated Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Linlin ZHANG
- 1 Department of Acupuncture-Moxibustion and Tuina, the Third Affiliated Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Wenting LU
- 3 External Treatment Center, First People's Hospital of Chengdu, Chengdu 610095, China
| | - Yanan SHANG
- 1 Department of Acupuncture-Moxibustion and Tuina, the Third Affiliated Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Yumei ZHONG
- 2 Department of Chengdu Integrated Traditional Chinese Medicine and Western Medicine Hospital, Chengdu 610075, China
| | - Danhui HU
- 1 Department of Acupuncture-Moxibustion and Tuina, the Third Affiliated Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Xin YANG
- 4 Department of Health Rehabilitation School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Haiyan ZHOU
- 1 Department of Acupuncture-Moxibustion and Tuina, the Third Affiliated Hospital, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
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Chittum JE, Thompson A, Desai UR. Glycosaminoglycan microarrays for studying glycosaminoglycan-protein systems. Carbohydr Polym 2024; 335:122106. [PMID: 38616080 PMCID: PMC11032185 DOI: 10.1016/j.carbpol.2024.122106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/16/2024]
Abstract
More than 3000 proteins are now known to bind to glycosaminoglycans (GAGs). Yet, GAG-protein systems are rather poorly understood in terms of selectivity of recognition, molecular mechanism of action, and translational promise. High-throughput screening (HTS) technologies are critically needed for studying GAG biology and developing GAG-based therapeutics. Microarrays, developed within the past two decades, have now improved to the point of being the preferred tool in the HTS of biomolecules. GAG microarrays, in which GAG sequences are immobilized on slides, while similar to other microarrays, have their own sets of challenges and considerations. GAG microarrays are rapidly becoming the first choice in studying GAG-protein systems. Here, we review different modalities and applications of GAG microarrays presented to date. We discuss advantages and disadvantages of this technology, explain covalent and non-covalent immobilization strategies using different chemically reactive groups, and present various assay formats for qualitative and quantitative interpretations, including selectivity screening, binding affinity studies, competitive binding studies etc. We also highlight recent advances in implementing this technology, cataloging of data, and project its future promise. Overall, the technology of GAG microarray exhibits enormous potential of evolving into more than a mere screening tool for studying GAG - protein systems.
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Affiliation(s)
- John E Chittum
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, United States of America; Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA 23219, United States of America
| | - Ally Thompson
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, United States of America; Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA 23219, United States of America
| | - Umesh R Desai
- Department of Medicinal Chemistry, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, United States of America; Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA 23219, United States of America.
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Zheng Y, Li Y, Li S, Hu R, Zhang L. Annexin A1 (Ac2-26)-dependent Fpr2 receptor alleviates sepsis-induced acute kidney injury by inhibiting inflammation and apoptosis in vivo and in vitro. Inflamm Res 2023; 72:347-362. [PMID: 36544058 PMCID: PMC9925514 DOI: 10.1007/s00011-022-01640-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/02/2022] [Accepted: 09/07/2022] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES Excessive inflammatory responses and apoptosis are critical pathologies that contribute to sepsis-induced acute kidney injury (SI-AKI). Annexin A1 (ANXA1), a member of the calcium-dependent phospholipid-binding protein family, protects against SI-AKI through its anti-inflammatory and antiapoptotic effects, but the underlying mechanisms are still largely unknown. METHODS In vivo, SI-AKI mouse models were established via caecal ligation and puncture (CLP) and were then treated with the Ac2-26 peptide of ANXA1 (ANXA1 (Ac2-26)), WRW4 (Fpr2 antagonist) or both. In vitro, HK-2 cells were induced by lipopolysaccharide (LPS) and then treated with ANXA1 (Ac2-26), Fpr2-siRNA or both. RESULTS In the present study, we found that the expression levels of ANXA1 were decreased, and the expression levels of TNF-α, IL-1β, IL-6, cleaved caspase-3, cleaved caspase-8 and Bax were significantly increased, accompanied by marked kidney tissue apoptosis in vivo. Moreover, we observed that ANXA1 (Ac2-26) significantly reduced the levels of TNF-α, IL-1β and IL-6 and cleaved caspase-3, cleaved caspase-8, FADD and Bax and inhibited apoptosis in kidney tissue and HK-2 cells, accompanied by pathological damage to kidney tissue. Seven-day survival, kidney function and cell viability were significantly improved in vivo and in vitro, respectively. Furthermore, the administration of ANXA1 (Ac2-26) inhibited the CLP- or LPS-induced phosphorylation of PI3K and AKT and downregulated the level of NF-κB in vivo and in vitro. Moreover, our data demonstrate that blocking the Fpr2 receptor by the administration of WRW4 or Fpr2-siRNA reversed the abovementioned regulatory role of ANXA1, accompanied by enhanced phosphorylation of PI3K and AKT and upregulation of the level of NF-κB in vivo and in vitro. CONCLUSIONS Taken together, this study provides evidence that the protective effect of ANXA1 (Ac2-26) on SI-AKI largely depends on the negative regulation of inflammation and apoptosis via the Fpr2 receptor.
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Affiliation(s)
- Yanlei Zheng
- Department of Critical Care Medicine, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430079 China
| | - Yan Li
- Department of Critical Care Medicine, Xiangyang Central Hospital, Xiangyang, 440121 China
| | - Shi Li
- Department of Critical Care Medicine, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430079 China
| | - Ronghua Hu
- Department of Critical Care Medicine, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430079 China
| | - Li Zhang
- Department of Critical Care Medicine, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430079, China.
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Heparin and Progesterone Exert Synergistic Effects to Improve the In-Vitro Fertilization Rate of Bovine Sperm Bound to Oviduct Cell Aggregates from the Isthmus. Vet Sci 2022; 9:vetsci9070372. [PMID: 35878389 PMCID: PMC9318521 DOI: 10.3390/vetsci9070372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 07/08/2022] [Accepted: 07/14/2022] [Indexed: 12/02/2022] Open
Abstract
Simple Summary After mating, sperm starts its long journey with the ultimate goal of fertilizing the oocyte. Inside the oviduct, sperm is attached to the surface of epithelial cells. The intact and good-quality sperm are elected and stored. Many infertility-related problems are related to the short life span of the sperm and/or the delay of the capacitation process of sperm attached to the oviduct. Thus, the elongation of the life span of the sperm would be very helpful in overcoming such problems. We hereby aimed to evaluate the fertilization ability of sperm that bind to cell aggregates oviduct (infundibulum-ampulla-isthmus), and assess the effect of heparin and or progesterone on the in-vitro fertilization ability of sperm co-incubated with isthmus cells aggregates. The sperm bound to isthmus aggregates improved the rate of in-vitro fertilization compared to infundibulum and ampulla. Moreover, pre-treatment of mature oocytes with heparin and progesterone plays a coactive role that improves the in-vitro fertilization of sperm bound to cell aggregates from isthmus. In conclusion, binding to isthmus aggregates improves the in-vitro fertilization of bovine sperm. Additionally, heparin together with progesterone, exerts a synergistic action that improves the in-vitro fertilizing potential of sperm attached to isthmus aggregates. Abstract After the copulation process, some sperm start the long journey with an ultimate goal of fertilizing the oocyte. Inside the oviduct, sperm are stored, waiting for the ovulated oocyte where they bind to the apical surface of the oviduct cells, which in turn hold sperm to form a sperm nest. The essential functions of the sperm reservoir include attaching spermatozoa to oviduct epithelial cells, selecting intact, good-quality sperm with an end result of extending sperm life expectancy. The current study aimed to evaluate the fertilization ability of sperm that bind to cell aggregates from different parts of the oviduct (infundibulum-ampulla-isthmus), and to assess the effect of heparin and or progesterone (P4) on the in-vitro fertilization ability of sperm co-incubated with cell aggregates from the isthmus. In-vitro fertilization was identified as a cleaved oocyte to two cells or more. The sperm bound to cell aggregates from the isthmus improved the rate of in-vitro fertilization (48.09%) compared to aggregates from the infundibulum (36.90%) and ampulla (37.61%). Moreover, pre-treatment of mature COCs with heparin (40 μg/mL) and P4 (80 nanomolar) play a coactive role that improves the in-vitro fertilization ability of sperm bound to cell aggregates from isthmus (63.33%), compared to 42.61% in the absence of cells aggregates. In conclusion, binding to cell aggregates from isthmus improves the in-vitro fertilization ability of Bovine sperm. Additionally, heparin, together with P4, exerts a synergistic action that improves the in-vitro fertilizing potential of sperm attached to cell aggregates from the isthmus of the bovine oviduct.
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Tyrikos-Ergas T, Sletten ET, Huang JY, Seeberger PH, Delbianco M. On resin synthesis of sulfated oligosaccharides. Chem Sci 2022; 13:2115-2120. [PMID: 35308866 PMCID: PMC8848854 DOI: 10.1039/d1sc06063e] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 01/29/2022] [Indexed: 01/19/2023] Open
Abstract
Sulfated glycans are involved in many biological processes, making well-defined sulfated oligosaccharides highly sought molecular probes. These compounds are a considerable synthetic challenge, with each oligosaccharide target requiring specific synthetic protocols and extensive purifications steps. Here, we describe a general on resin approach that simplifies the synthesis of sulfated glycans. The oligosaccharide backbone, obtained by Automated Glycan Assembly (AGA), is subjected to regioselective sulfation and hydrolysis of protecting groups. The protocol is compatible with several monosaccharides and allows for multi-sulfation of linear and branched glycans. Seven diverse, biologically relevant sulfated glycans were prepared in good to excellent overall yield.
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Affiliation(s)
- Theodore Tyrikos-Ergas
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany .,Department of Chemistry and Biochemistry, Freie Universität Berlin Arnimallee 22 14195 Berlin Germany
| | - Eric T Sletten
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
| | - Jhih-Yi Huang
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany .,Department of Chemistry and Biochemistry, Freie Universität Berlin Arnimallee 22 14195 Berlin Germany
| | - Peter H Seeberger
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany .,Department of Chemistry and Biochemistry, Freie Universität Berlin Arnimallee 22 14195 Berlin Germany
| | - Martina Delbianco
- Department of Biomolecular Systems, Max-Planck Institute of Colloids and Interfaces Am Mühlenberg 1 14476 Potsdam Germany
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Heparan sulfate binds the extracellular Annexin A1 and blocks its effects on pancreatic cancer cells. Biochem Pharmacol 2020; 182:114252. [DOI: 10.1016/j.bcp.2020.114252] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 12/12/2022]
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Reconsideration of the Semaphorin-3A Binding Motif Found in Chondroitin Sulfate Using Galnac4s-6st-Knockout Mice. Biomolecules 2020; 10:biom10111499. [PMID: 33143303 PMCID: PMC7694144 DOI: 10.3390/biom10111499] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/26/2020] [Accepted: 10/28/2020] [Indexed: 12/15/2022] Open
Abstract
The chondroitin sulfate (CS)-rich dense extracellular matrix surrounding neuron cell bodies and proximal dendrites in a mesh-like structure is called a perineuronal net (PNN). CS chains in PNNs control neuronal plasticity by binding to PNN effectors, semaphorin-3A (Sema3A) and orthodenticle homeobox 2. Sema3A recognizes CS-containing type-E disaccharide units (sulfated at O-4 and O-6 of N-acetylgalactosamine). Type-E disaccharide units are synthesized by N-acetylgalactosamine 4-sulfate 6-O-sulfotransferase (GalNAc4S-6ST). In this study, we demonstrated that Sema3A accumulates in the PNNs surrounding parvalbumin cells, even in mice deficient in GalNAc4S-6ST. In addition, there were no differences in the number and structure of PNNs visualized by Cat316 antibody and Wisteria floribunda lectin, which recognize CS chains, between wild type and GalNAc4S-6ST knockout mice. Therefore, we re-examined the Sema3A binding motif found in CS chains using chemically synthesized CS tetrasaccharides. As a result, we found that non-sulfated GalNAc residues at the non-reducing termini of CS chains are required for the binding of Sema3A.
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D'Occhio MJ, Campanile G, Zicarelli L, Visintin JA, Baruselli PS. Adhesion molecules in gamete transport, fertilization, early embryonic development, and implantation-role in establishing a pregnancy in cattle: A review. Mol Reprod Dev 2020; 87:206-222. [PMID: 31944459 DOI: 10.1002/mrd.23312] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 12/19/2019] [Indexed: 12/11/2022]
Abstract
Cell-cell adhesion molecules have critically important roles in the early events of reproduction including gamete transport, sperm-oocyte interaction, embryonic development, and implantation. Major adhesion molecules involved in reproduction include cadherins, integrins, and disintegrin and metalloprotease domain-containing (ADAM) proteins. ADAMs on the surface of sperm adhere to integrins on the oocyte in the initial stages of sperm-oocyte interaction and fusion. Cadherins act in early embryos to organize the inner cell mass and trophectoderm. The trophoblast and uterine endometrial epithelium variously express cadherins, integrins, trophinin, and selectin, which achieve apposition and attachment between the elongating conceptus and uterine epithelium before implantation. An overview of the major cell-cell adhesion molecules is presented and this is followed by examples of how adhesion molecules help shape early reproductive events. The argument is made that a deeper understanding of adhesion molecules and reproduction will inform new strategies that improve embryo survival and increase the efficiency of natural mating and assisted breeding in cattle.
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Affiliation(s)
- Michael J D'Occhio
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW, Australia
| | - Giuseppe Campanile
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Luigi Zicarelli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - José A Visintin
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Pietro S Baruselli
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, Brazil
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Annexin A1 Contained in Extracellular Vesicles Promotes the Activation of Keratinocytes by Mesoglycan Effects: An Autocrine Loop Through FPRs. Cells 2019; 8:cells8070753. [PMID: 31331117 PMCID: PMC6679056 DOI: 10.3390/cells8070753] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/09/2019] [Accepted: 07/18/2019] [Indexed: 12/11/2022] Open
Abstract
We have recently demonstrated that mesoglycan, a fibrinolytic compound, may be a promising pro-healing drug for skin wound repair. We showed that mesoglycan induces migration, invasion, early differentiation, and translocation to the membrane of keratinocytes, as well as the secretion of annexin A1 (ANXA1), further involved in keratinocytes activation. These events are triggered by the syndecan-4 (SDC4)/PKCα pathway. SDC4 also participates to the formation and secretion of microvesicles (EVs) which may contribute to wound healing. EVs were isolated from HaCaT cells, as human immortalized keratinocytes, and then characterised by Western blotting, Field Emission-Scanning Electron Microscopy, and Dynamic Light Scattering. Their autocrine effects were investigated by Wound-Healing/invasion assays and confocal microscopy to analyse cell motility and differentiation, respectively. Here, we found that the mesoglycan increased the release of EVs which amplify its same effects. ANXA1 contained in the microvesicles is able to promote keratinocytes motility and differentiation by acting on Formyl Peptide Receptors (FPRs). Thus, the extracellular form of ANXA1 may be considered as a link to intensify the effects of mesoglycan. In this study, for the first time, we have identified an interesting autocrine loop ANXA1/EVs/FPRs in human keratinocytes, induced by mesoglycan.
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Bizzarro V, Belvedere R, Pessolano E, Parente L, Petrella F, Perretti M, Petrella A. Mesoglycan induces keratinocyte activation by triggering syndecan‐4 pathway and the formation of the annexin A1/S100A11 complex. J Cell Physiol 2019; 234:20174-20192. [DOI: 10.1002/jcp.28618] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/15/2019] [Accepted: 03/19/2019] [Indexed: 12/17/2022]
Affiliation(s)
| | | | | | - Luca Parente
- Department of Pharmacy University of Salerno Salerno Italy
| | - Francesco Petrella
- Department of Primary Care, Wound Care Service Health Local Agency Naples 3 South Napoli Italy
| | - Mauro Perretti
- William Harvey Research Institute Queen Mary University of London London UK
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Wu Y, Wang L, Meng L, Cao GK, Zhang Y. Evaluation of CRRT effects on pyemic secondary AKI by serum cartilage glycoprotein 39 and Annexin A1. Exp Ther Med 2016; 12:2997-3001. [PMID: 27882106 PMCID: PMC5103737 DOI: 10.3892/etm.2016.3691] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 08/24/2016] [Indexed: 12/15/2022] Open
Abstract
The aim of the present study was to examine the effects of continuous renal replacement therapy (CRRT) on pyemic secondary acute kidney injury (AKI) by serum cartilage glycoprotein 39 (YKL-40) and Annexin A1. From October, 2013 to October, 2015, 45 pyemic secondary AKI cases and 40 pyemic non-secondary AKI cases were selected for the present study. There were also 35 cases of physical examination volunteers. The serum YKL-40 and Annexin A1 levels were compared. CRRT was applied to pyemic secondary AKI patients and based on the obtained results the patients were divided into the success and failure groups. YKL-40, Annexin A1, hs-CRP, creatinine and urea nitrogen levels after 1, 6, 12, 24, 48 and 72 h of AKI were measured. The YKL-40 and Annexin A1 levels in the pyemic secondary AKI group were significantly higher than those in other two groups and differences were statistically significant (P<0.05). There was no statistically significant difference regarding time period for applying CRRT in the success and failure groups (P>0.05). The peak level of YKL-40 and Annexin A1 in the success group decreased more rapidly compared to the failure group and the difference was statistically significant (P<0.05). When the differences in creatinine and urea nitrogen levels at different time points were compared between the success and failure groups, no statistical significance was observed (P>0.05). However, the success group showed a significantly lower level compared to the failure group at 72 h. Comparisons for other time periods showed no statistical significance (P>0.05). Thus, the serum cartilage glycoprotein 39 and Annexin A1 level were able to predict the clinical effects of CRRT on pyemic secondary AKI.
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Affiliation(s)
- Yu Wu
- Department of Nephrology, The First People's Hospital of Xuzhou, Xuzhou, Jiangsu 221000, P.R. China
| | - Ling Wang
- Department of Nephrology, The First People's Hospital of Xuzhou, Xuzhou, Jiangsu 221000, P.R. China
| | - Lei Meng
- Department of Intensive Care Unit, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221000, P.R. China
| | - Guang-Ke Cao
- Department of Nephrology, The First People's Hospital of Xuzhou, Xuzhou, Jiangsu 221000, P.R. China
| | - Yang Zhang
- Department of Anesthesiology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, P.R. China
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Ardon F, Markello RD, Hu L, Deutsch ZI, Tung CK, Wu M, Suarez SS. Dynamics of Bovine Sperm Interaction with Epithelium Differ Between Oviductal Isthmus and Ampulla. Biol Reprod 2016; 95:90. [PMID: 27605344 PMCID: PMC5176364 DOI: 10.1095/biolreprod.116.140632] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Accepted: 09/01/2016] [Indexed: 11/04/2022] Open
Abstract
In mammals, many sperm that reach the oviduct are held in a reservoir by binding to epithelium. To leave the reservoir, sperm detach from the epithelium; however, they may bind and detach again as they ascend into the ampulla toward oocytes. In order to elucidate the nature of binding interactions along the oviduct, we compared the effects of bursts of strong fluid flow (as would be caused by oviductal contractions), heparin, and hyperactivation on detachment of bovine sperm bound in vitro to epithelium on intact folds of isthmic and ampullar mucosa. Intact folds of oviductal mucosa were used to represent the strong attachments of epithelial cells to each other and to underlying connective tissue that exist in vivo. Effects of heparin on binding were tested because heparin binds to the Binder of SPerm (BSP) proteins that attach sperm to oviductal epithelium. Sperm bound by their heads to beating cilia on both isthmic and ampullar epithelia and could not be detached by strong bursts of fluid flow. Addition of heparin immediately detached sperm from isthmic epithelium but not ampullar epithelium. Addition of 4-aminopyridine immediately stimulated hyperactivation of sperm but did not detach them from isthmic or ampullar epithelium unless added with heparin. These observations indicate that the nature of binding of sperm to ampullar epithelium differs from that of binding to isthmic epithelium; specifically, sperm bound to isthmic epithelium can be detached by heparin alone, while sperm bound to ampullar epithelium requires both heparin and hyperactivation to detach from the epithelium.
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Affiliation(s)
- Florencia Ardon
- Department of Biomedical Sciences, Cornell University, Ithaca, New York
| | - Ross D Markello
- Department of Biomedical Sciences, Cornell University, Ithaca, New York
| | - Lian Hu
- Department of Biomedical Sciences, Cornell University, Ithaca, New York Family Planning Research Institute, Huazhong University of Science and Technology, Wuhan, China
| | - Zarah I Deutsch
- Department of Biomedical Sciences, Cornell University, Ithaca, New York
| | - Chih-Kuan Tung
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, New York
| | - Mingming Wu
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, New York
| | - Susan S Suarez
- Department of Biomedical Sciences, Cornell University, Ithaca, New York
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14
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Meneghetti MCZ, Hughes AJ, Rudd TR, Nader HB, Powell AK, Yates EA, Lima MA. Heparan sulfate and heparin interactions with proteins. J R Soc Interface 2016; 12:0589. [PMID: 26289657 DOI: 10.1098/rsif.2015.0589] [Citation(s) in RCA: 198] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Heparan sulfate (HS) polysaccharides are ubiquitous components of the cell surface and extracellular matrix of all multicellular animals, whereas heparin is present within mast cells and can be viewed as a more sulfated, tissue-specific, HS variant. HS and heparin regulate biological processes through interactions with a large repertoire of proteins. Owing to these interactions and diverse effects observed during in vitro, ex vivo and in vivo experiments, manifold biological/pharmacological activities have been attributed to them. The properties that have been thought to bestow protein binding and biological activity upon HS and heparin vary from high levels of sequence specificity to a dependence on charge. In contrast to these opposing opinions, we will argue that the evidence supports both a level of redundancy and a degree of selectivity in the structure-activity relationship. The relationship between this apparent redundancy, the multi-dentate nature of heparin and HS polysaccharide chains, their involvement in protein networks and the multiple binding sites on proteins, each possessing different properties, will also be considered. Finally, the role of cations in modulating HS/heparin activity will be reviewed and some of the implications for structure-activity relationships and regulation will be discussed.
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Affiliation(s)
- Maria C Z Meneghetti
- Departamento de Bioquímica, Universidade Federal de São Paulo (UNIFESP), Rua Três de Maio, São Paulo 40440-020, Brazil
| | - Ashley J Hughes
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg 40530, Sweden Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
| | - Timothy R Rudd
- The National Institute for Biological Standards and Control (NIBSC), South Mimms, Potters Bar, Hertfordshire EN6 3QC, UK Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
| | - Helena B Nader
- Departamento de Bioquímica, Universidade Federal de São Paulo (UNIFESP), Rua Três de Maio, São Paulo 40440-020, Brazil
| | - Andrew K Powell
- School of Pharmacy and Biomolecular Science, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, UK Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
| | - Edwin A Yates
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK Departamento de Bioquímica, Universidade Federal de São Paulo (UNIFESP), Rua Três de Maio, São Paulo 40440-020, Brazil
| | - Marcelo A Lima
- Departamento de Bioquímica, Universidade Federal de São Paulo (UNIFESP), Rua Três de Maio, São Paulo 40440-020, Brazil Department of Biochemistry, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
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15
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Kreft S, Klatt AR, Straßburger J, Pöschl E, Flower RJ, Eming S, Reutelingsperger C, Brisson A, Brachvogel B. Skin Wound Repair Is Not Altered in the Absence of Endogenous AnxA1 or AnxA5, but Pharmacological Concentrations of AnxA4 and AnxA5 Inhibit Wound Hemostasis. Cells Tissues Organs 2016; 201:287-98. [PMID: 27178140 DOI: 10.1159/000445106] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/29/2016] [Indexed: 11/19/2022] Open
Abstract
Skin injury induces the cell surface exposure of phosphatidylserine (PS) on damaged and dying cells to activate coagulation and repair processes. Annexins can bind to PS and may modulate the healing response. Here, we determine the relevance of annexins for skin wound healing using AnxA1- and AnxA5-deficient mice and recombinant annexins with distinct PS binding properties. Wound inflammation, closure and the formation of granulation tissue were not altered in AnxA1- or AnxA5-deficient mice or after increasing AnxA5 serum concentrations (100 nM) in wild-type mice. Increased serum concentrations (1 µM) of AnxA5 induced massive bleeding, but wound hemostasis was not delayed by AnxA1. Both annexins interact with PS, but only AnxA5 can form 2-dimensional (2D) arrays on the cell surface. The injection of an AnxA5 mutant that binds to PS but lacks the ability of 2D array formation failed to induce bleeding. 2D lattice-forming AnxA4, with high affinity to PS also caused bleeding, while hemostasis was not affected by AnxA8 with low affinity or the AnxA8 mutant with medium affinity for PS and the lack of 2D formation. Increased concentrations of AnxA4 and AnxA5 also delayed coagulation pathway activation in vitro. This effect was attenuated for the AnxA5 mutant as well as for AnxA1 and AnxA8. In conclusion, endogenous AnxA1 and AnxA5 are dispensable for wound hemostasis and repair, but pharmacologically excessive concentrations of AnxA4 and AnxA5 inhibit hemostasis in skin wounds.
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16
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Yao BZB, Yu SQ, Yuan H, Zhang HJ, Niu P, Ye JP. The Role and Effects of ANXA1 in Temporal Lobe Epilepsy: A Protection Mechanism? Med Sci Monit Basic Res 2015; 21:241-6. [PMID: 26609771 PMCID: PMC4701014 DOI: 10.12659/msmbr.895487] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Background The endogenous protein annexin A1 (ANXA1) is an anti-inflammatory mediator in the brain that is thought to contribute to the progression of many neurological conditions. However, its exact role in temporal lobe epilepsy (TLE) remains unclear. We hypothesized that ANXA1 exerts negative actions on TLE by alleviating inflammatory damage in neurons. To identify the potential mechanism of TLE by assessing ANXA1 expression in TLE rats. Material/Methods TLE was induced in rats (n=70) via an intraperitoneal injection of lithium chloride (LiCl) and pilocarpine (PILO). The control group (n=10) received an injection of the equivalent amount of saline. ANXA1 expression was detected via immunohistochemistry and Western blotting. Results Successful establishment of the TLE model in rats resulted in epileptic seizures. ANXA1 was immunohistochemically detected as brownish yellow particles in the dentate gyrus and the CA1 region of the door zone; this expression was predominantly localized to the cytoplasm of glia rather than neurons. ANXA1 expression was stronger in TLE rats compared with the control group. ANXA1 expression in TLE was also assessed via Western blotting, and compared between groups at various time points. ANXA1 expression was significantly increased in the acute (the first 24 h) and chronic (after 1 month) phases (P<0.001) but significantly decreased during the recovery phase (72 h, 1 week, and 2 weeks) (P<0.001). These findings suggest that ANXA1 expression is correlated with TLE activity. Conclusions Our data suggest that ANXA1 plays an important role in TLE by alleviating inflammatory damage and protecting neurons.
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Affiliation(s)
- Bao-Zhen Bao Yao
- Department of Pediatric, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Shi-Qian Yu
- Department of Pediatric, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Hao Yuan
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Hai-Ju Zhang
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Ping Niu
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Jing-Ping Ye
- Department of Pediatrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
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17
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Balaj L, Atai NA, Chen W, Mu D, Tannous BA, Breakefield XO, Skog J, Maguire CA. Heparin affinity purification of extracellular vesicles. Sci Rep 2015; 5:10266. [PMID: 25988257 PMCID: PMC4437317 DOI: 10.1038/srep10266] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 04/02/2015] [Indexed: 01/05/2023] Open
Abstract
Extracellular vesicles (EVs) are lipid membrane vesicles released by cells. They carry active biomolecules including DNA, RNA, and protein which can be transferred to recipient cells. Isolation and purification of EVs from culture cell media and biofluids is still a major challenge. The most widely used isolation method is ultracentrifugation (UC) which requires expensive equipment and only partially purifies EVs. Previously we have shown that heparin blocks EV uptake in cells, supporting a direct EV-heparin interaction. Here we show that EVs can be purified from cell culture media and human plasma using ultrafiltration (UF) followed by heparin-affinity beads. UF/heparin-purified EVs from cell culture displayed the EV marker Alix, contained a diverse RNA profile, had lower levels of protein contamination, and were functional at binding to and uptake into cells. RNA yield was similar for EVs isolated by UC. We were able to detect mRNAs in plasma samples with comparable levels to UC samples. In conclusion, we have discovered a simple, scalable, and effective method to purify EVs taking advantage of their heparin affinity.
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Affiliation(s)
- Leonora Balaj
- Department of Neurology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA
| | - Nadia A Atai
- 1] Department of Neurology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA. [2] Department of Cell Biology and Histology, Academic Medical Center (AMC), University of Amsterdam, The Netherlands
| | - Weilin Chen
- Department of Neurology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA
| | - Dakai Mu
- Department of Neurology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA
| | - Bakhos A Tannous
- Department of Neurology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA
| | - Xandra O Breakefield
- 1] Department of Neurology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA. [2] Departments of Radiology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA
| | | | - Casey A Maguire
- Department of Neurology, Massachusetts General Hospital and Program in Neuroscience, Harvard Medical School, Boston, MA
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18
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Kavunja HW, Voss PG, Wang JL, Huang X. Identification of Lectins from Metastatic Cancer Cells through Magnetic Glyconanoparticles. Isr J Chem 2015; 55:423-436. [PMID: 27110035 PMCID: PMC4838199 DOI: 10.1002/ijch.201400156] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Cancer cells can have characteristic carbohydrate binding properties. Previously, it was shown that a highly metastatic melanoma cell line B16F10 bound to galacto-side-functionalized nanoparticles much stronger than the corresponding less metastatic B16F1 cells. To better understand the carbohydrate binding properties of cancer cells, herein, we report the isolation and characterization of endogenous galactose binding proteins from B16F10 cells using magnetic glyconanoparticles. The galactose-coated magnetic glyconanoparticles could bind with lectins present in the cells and be isolated through magnet-mediated separation. Through Western blot and mass spectrometry, the arginine/serine rich splicing factor Sfrs1 was identified as a galactose-selective endogenous lectin, overexpressed in B16F10 cells, compared with B16F1 cells. In addition, galactin-3 was found in higher amounts in B16F10 cells. Finally, the glyconanoparticles exhibited a superior efficiency in lectin isolation, from both protein mixtures and live cells, than the corresponding more traditional microparticles functionalized with carbohydrates. Thus, the magnetic glyconanoparticles present a useful tool for discovery of endogenous lectins, as well as binding partners of lectins, without prior knowledge of protein identities.
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Affiliation(s)
- Herbert W. Kavunja
- Department of Chemistry, Chemistry Building, Room 426, 578 S. Shaw Lane, Michigan State University, East Lansing, MI 48824 (USA)
| | - Patricia G. Voss
- Department of Biochemistry and Molecular Biology, Biochemistry Building, Room 402, 603 Wilson Road, Michigan State University, East Lansing, MI 48824 (USA)
| | - John L. Wang
- Department of Biochemistry and Molecular Biology, Biochemistry Building, Room 402, 603 Wilson Road, Michigan State University, East Lansing, MI 48824 (USA)
| | - Xuefei Huang
- Department of Chemistry, Chemistry Building, Room 426, 578 S. Shaw Lane, Michigan State University, East Lansing, MI 48824 (USA)
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19
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20
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Hatakeyama S, Shibata TK, Tobisawa Y, Ohyama C, Sugihara K, Fukuda MN. Tumor targeting by a carbohydrate ligand-mimicking peptide. Methods Mol Biol 2013; 1022:369-386. [PMID: 23765676 DOI: 10.1007/978-1-62703-465-4_28] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Annexin A1 (Anxa1) is a highly specific surface marker of tumor vasculature. We used peptide-displaying phage technology to identify a carbohydrate ligand-mimicking 7-mer peptide, IFLLWQR (IF7), which can target Anxa1 in tumor vasculature. Here, we describe the binding activity of carbohydrate to Anxa1, Anxa1 to heparan sulfates, and the therapeutic potential of IF7 conjugated with anticancer drugs in tumor targeting.
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Affiliation(s)
- Shingo Hatakeyama
- Department of Urology, Hirosaki University School of Medicine, Hirosaki, Aomori, Japan
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21
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Fukuda MN. Identification of endothelial cell surface carbohydrate-binding receptors by carbohydrate ligand mimicry peptides. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 749:57-66. [PMID: 22695838 DOI: 10.1007/978-1-4614-3381-1_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Michiko N Fukuda
- Sanford-Burnham Medical Research Institute, La Jolla, CA 92037, USA.
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22
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Norberg O, Lee IH, Aastrup T, Yan M, Ramström O. Photogenerated lectin sensors produced by thiol-ene/yne photo-click chemistry in aqueous solution. Biosens Bioelectron 2012; 34:51-6. [PMID: 22341757 DOI: 10.1016/j.bios.2012.01.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Accepted: 01/05/2012] [Indexed: 12/16/2022]
Abstract
The photoinitiated radical reactions between thiols and alkenes/alkynes (thiol-ene and thiol-yne chemistry) have been applied to a functionalization methodology to produce carbohydrate-presenting surfaces for analyses of biomolecular interactions. Polymer-coated quartz surfaces were functionalized with alkenes or alkynes in a straightforward photochemical procedure utilizing perfluorophenylazide (PFPA) chemistry. The alkene/alkyne surfaces were subsequently allowed to react with carbohydrate thiols in water under UV-irradiation. The reaction can be carried out in a drop of water directly on the surface without photoinitiator, and any disulfide side products were easily washed away after the functionalization process. The resulting carbohydrate-presenting surfaces were evaluated in real-time studies of protein-carbohydrate interactions using a quartz crystal microbalance (QCM) flow-through system with recurring injections of selected lectins, with intermediate regeneration steps using low pH buffer. The resulting methodology proved fast, efficient and scalable to high-throughput analysis formats, and the produced surfaces showed significant protein binding with expected selectivities of the lectins used in the study.
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Affiliation(s)
- Oscar Norberg
- KTH Royal Institute of Technology, Department of Chemistry, Stockholm, Sweden
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23
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Fukuda MN, Hatakeyama S, Sugihara K. Carbohydrate Mimetic Peptides as Research Reagent and Therapeutic. Biol Pharm Bull 2012; 35:1626-32. [DOI: 10.1248/bpb.b12-00395] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Michiko N. Fukuda
- Tumor Microenvironment Program, Cancer Center, Sanford-Burnham Medical Research Institute
| | - Shingo Hatakeyama
- Department of Advanced Transplant and Regenerative Medicine, Graduate School of Medicine, Hirosaki University
| | - Kazuhiro Sugihara
- Department of Gynecology and Obstetrics, School of Medicine, Hamamatsu University
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24
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Tiruchinapally G, Yin Z, El-Dakdouki M, Wang Z, Huang X. Divergent heparin oligosaccharide synthesis with preinstalled sulfate esters. Chemistry 2011; 17:10106-12. [PMID: 21786352 PMCID: PMC3324038 DOI: 10.1002/chem.201101108] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Indexed: 12/26/2022]
Abstract
Traditional chemical synthesis of heparin oligosaccharides first involves assembly of the full length oligosaccharide backbone followed by sulfation. Herein, we report an alternative strategy in which the O-sulfate was introduced onto glycosyl building blocks as a trichloroethyl ester prior to assembly of the full length oligosaccharide. This allowed divergent preparation of both sulfated and non-sulfated building blocks from common advanced intermediates. The O-sulfate esters were found to be stable during glycosylation as well as typical synthetic manipulations encountered during heparin oligosaccharide synthesis. Furthermore, the presence of sulfate esters in both glycosyl donors and acceptors did not adversely affect the glycosylation yields, which enabled us to assemble multiple heparin oligosaccharides with preinstalled 6-O-sulfates.
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Affiliation(s)
| | - Zhaojun Yin
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Mohammad El-Dakdouki
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Zhen Wang
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
| | - Xuefei Huang
- Department of Chemistry, Michigan State University, East Lansing, MI 48824 (USA)
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