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Sesen J, Martinez T, Busatto S, Poluben L, Nassour H, Stone C, Ashok K, Moses MA, Smith ER, Ghalali A. AZIN1 level is increased in medulloblastoma and correlates with c-Myc activity and tumor phenotype. J Exp Clin Cancer Res 2025; 44:56. [PMID: 39962590 PMCID: PMC11831846 DOI: 10.1186/s13046-025-03274-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2024] [Accepted: 01/02/2025] [Indexed: 02/21/2025] Open
Abstract
BACKGROUND AZIN1 is a cell cycle regulator that is upregulated in a variety of cancers. AZIN1 overexpression can induce a more aggressive tumor phenotype via increased binding and resultant inhibition of antizyme. Antizyme is a protein that normally functions as an anti-tumor regulator that facilitates the deactivation of several growth-promoting proteins including c-Myc. MYC plays a critical role in medulloblastoma pathogenesis. Its amplification serves as a defining characteristic of group 3 medulloblastomas, associated with the most aggressive clinical course, greater frequency of metastases, and shorter survival times. METHODS Medulloblastoma tissues (68 TMA, and 45 fresh tissues, and 31 controls) were stained (fluorescence and immunohistochemical) for AZIN1. Western blotting and ELISA were used to detect the AZIN1 level. Phenotypically aggressive cellular features were measured by increased invasion, colony formation and proliferation. CRISPR-Cas9-mediated AZIN1 knocked-out cells were orthotopically implanted in the cerebellum of nude mice (n = 8/group) with a stereotactic frame. Tumor growth was monitored using the In Vivo Imaging System (IVIS). RESULTS Here, we investigated the role of AZIN1 expression in medulloblastoma. We found that overexpression of AZIN1 in medulloblastoma cells induces phenotypically aggressive features. Conducting in vivo studies we found that knocking-out AZIN1 in tumors corresponds with reduced tumor progression and prolonged survival. Clinical specimens are revealing that AZIN1 is highly expressed and directly correlates with MYC amplification status in patients. CONCLUSION These data implicate AZIN1 as a putative regulator of medulloblastoma pathogenesis and suggest that it may have clinical application as both a biomarker and novel therapeutic target.
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Affiliation(s)
- Julie Sesen
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Tyra Martinez
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA
| | - Sara Busatto
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Larysa Poluben
- Department of Medicine and Cancer Center, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02115, USA
| | - Hassan Nassour
- Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Caroline Stone
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA
| | - Karthik Ashok
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA
| | - Marsha A Moses
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
| | - Edward R Smith
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA
- Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Aram Ghalali
- Vascular Biology Program, Boston Children's Hospital, Boston, MA, USA.
- Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, MA, USA.
- Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.
- Vascular Biology Program and Department of Surgery, Boston Children's Hospital and Harvard Medical School, 300 Longwood Avenue, Boston, MA, 02115, USA.
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Kubota A, Ohno Y, Yasumoto J, Iijima M, Suzuki M, Iguchi A, Mori-Yasumoto K, Yasumoto-Hirose M, Sakata T, Suehiro T, Nakamae K, Mizusawa N, Jimbo M, Watabe S, Yasumoto K. The Role of Polyamines in pH Regulation in the Extracellular Calcifying Medium of Scleractinian Coral Spats. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:22635-22645. [PMID: 39652798 DOI: 10.1021/acs.est.4c10097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2024]
Abstract
This study aims to elucidate a novel mechanism for elevating the pH within the calicoblastic extracellular calcifying medium (pHECM) of corals and demonstrate the potential contribution of calcifying organisms to CO2 sequestration. Departing from traditional models that attribute the increase in pHECM primarily to H+ expulsion via Ca2+-ATPase, we emphasize the significant role of polyamines. These ubiquitous biogenic amines conveyed by calicoblastic cells through polyamine transporters demonstrate a remarkable affinity for CO2. Their ability to form stable carbamate complexes is pivotal in facilitating carbonate ion transport, which is crucial for pH regulation and skeletal structure formation. In this study, a polyamine transporter inhibitor and a polyamine biosynthesis inhibitor in conjunction with the pH-sensitive probe 8-hydroxypyrene-1,3,6-trisulfonic acid (HPTS) were employed to monitor pH variations. Furthermore, FM1-43FX dye was utilized to delineate the extracellular calcifying medium (ECM), whereas calcein was applied to visualize paracellular gaps and ECM. These methodologies provide profound insights into the intricate structural and functional dynamics of coral spats calcification. Findings suggest a potential reconsideration of established models of marine calcification and highlight the necessity to reassess the role of marine calcifying organisms in the carbon cycle, particularly their influence on CO2 fluxes.
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Affiliation(s)
- Azusa Kubota
- Kitasato University School of Marine Biosciences, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
- JEOL Ltd., 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan
| | - Yoshikazu Ohno
- Kitasato University School of Marine Biosciences, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
| | - Jun Yasumoto
- Faculty of Agriculture, University of the Ryukyus, 1 Senbaru, Nakagusuku, Nishihara, Okinawa 903-0213, Japan
| | - Mariko Iijima
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan
| | - Michio Suzuki
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Akira Iguchi
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8567, Japan
| | - Kanami Mori-Yasumoto
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba 278-8510, Japan
| | | | - Tsuyoshi Sakata
- Biological Laboratory, Center for Natural Sciences, College of Liberal Arts and Sciences, Kitasato University, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
| | - Takaaki Suehiro
- Kitasato University School of Marine Biosciences, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
| | - Kaho Nakamae
- Kitasato University School of Marine Biosciences, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
| | - Nanami Mizusawa
- Kitasato University School of Marine Biosciences, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
| | - Mitsuru Jimbo
- Kitasato University School of Marine Biosciences, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
| | - Shugo Watabe
- Kitasato University School of Marine Biosciences, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
| | - Ko Yasumoto
- Kitasato University School of Marine Biosciences, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan
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Omata K, Kashima M, Ohkido-Yamamoto M, Murai N, Ishikawa K, Hirata H, Kato T. Canonical and Non-Canonical Functions of Erythropoietin and Its Receptor in Mature Nucleated Erythrocytes of Western Clawed Frog, Xenopus tropicalis. Zoolog Sci 2024; 41:329-341. [PMID: 39093279 DOI: 10.2108/zs240004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 03/05/2024] [Indexed: 08/04/2024]
Abstract
Enucleated erythrocytes are characteristic of adult mammals. In contrast, fish, amphibians, reptiles, birds, and fetal mammals possess nucleated erythrocytes in their circulation. Erythroid maturation is regulated by erythropoietin (EPO) and its receptor (EPOR), which are conserved among vertebrates. In mammals, EPOR on the erythroid progenitor membrane disappears after terminal differentiation. However, in western clawed frog, Xenopus tropicalis, mature erythrocytes maintain EPOR expression, suggesting that they have non-canonical functions of the EPO-EPOR axis rather than proliferation and differentiation. In this study, we investigated the non-canonical functions of EPOR in Xenopus mature erythrocytes. EPO stimulation of peripheral erythrocytes did not induce proliferation but induced phosphorylation of intracellular proteins, including signal transducer and activator of transcription 5 (STAT5). RNA-Seq analysis of EPO-stimulated peripheral erythrocytes identified 45 differentially expressed genes (DEGs), including cytokine inducible SH2 containing protein gene (cish) and suppressor of cytokine signaling 3 gene (socs3), negative regulators of the EPOR-Janus kinase (JAK)-STAT pathway. These phosphorylation studies and pathway analysis demonstrated the activation of the JAK-STAT pathway through EPO-EPOR signaling in erythrocytes. Through comparison with EPO-responsive genes in mouse erythroid progenitors obtained from a public database, we identified 31 novel EPO-responsive genes indicating non-canonical functions. Among these, we focused on ornithine decarboxylase 1 gene (odc1), which is the rate-limiting enzyme in polyamine synthesis and affects hematopoietic progenitor differentiation and the endothelial cell response to hypoxic stress. An EPO-supplemented culture of erythrocytes showed increased odc1 expression followed by a decrease in polyamine-rich erythrocytes, suggesting EPO-responsive polyamine excretion. These findings will advance our knowledge of the unknown regulatory systems under the EPO-EPOR axis and functional differences between vertebrates' nucleated and enucleated erythrocytes.
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Affiliation(s)
- Kazuki Omata
- Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo 162-8480, Japan
| | - Makoto Kashima
- Department of Biomolecular Science, Faculty of Science, Toho University, Funabashi-shi 274-8510, Japan
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, Sagamihara-shi, Kanagawa 252-5258, Japan
| | - Makiko Ohkido-Yamamoto
- Department of Molecular Biology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Noriyuki Murai
- Department of Molecular Biology, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan
| | - Kota Ishikawa
- Department of Biology, School of Education, Waseda University, Shinjuku-ku, Tokyo 162-8480, Japan
| | - Hiromi Hirata
- Department of Chemistry and Biological Science, College of Science and Engineering, Aoyama Gakuin University, Sagamihara-shi, Kanagawa 252-5258, Japan
| | - Takashi Kato
- Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo 162-8480, Japan,
- Department of Biology, School of Education, Waseda University, Shinjuku-ku, Tokyo 162-8480, Japan
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Tanaka T. Recent Advances in Polymers Bearing Activated Esters for the Synthesis of Glycopolymers by Postpolymerization Modification. Polymers (Basel) 2024; 16:1100. [PMID: 38675019 PMCID: PMC11053895 DOI: 10.3390/polym16081100] [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: 03/26/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Glycopolymers are functional polymers with saccharide moieties on their side chains and are attractive candidates for biomaterials. Postpolymerization modification can be employed for the synthesis of glycopolymers. Activated esters are useful in various fields, including polymer chemistry and biochemistry, because of their high reactivity and ease of reaction. In particular, the formation of amide bonds caused by the reaction of activated esters with amino groups is of high synthetic chemical value owing to its high selectivity. It has been employed in the synthesis of various functional polymers, including glycopolymers. This paper reviews the recent advances in polymers bearing activated esters for the synthesis of glycopolymers by postpolymerization modification. The development of polymers bearing hydrophobic and hydrophilic activated esters is described. Although water-soluble activated esters are generally unstable and hydrolyzed in water, novel polymer backbones bearing water-soluble activated esters are stable and useful for postpolymerization modification for synthesizing glycopolymers in water. Dual postpolymerization modification can be employed to modify polymer side chains using two different molecules. Thiolactone and glycine propargyl esters on the polymer backbone are described as activated esters for dual postpolymerization modification.
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Affiliation(s)
- Tomonari Tanaka
- Department of Biobased Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Wang S, Chen J, Li H, Qi X, Liu X, Guo X. Metabolomic Detection Between Pancreatic Cancer and Liver Metastasis Nude Mouse Models Constructed by Using the PANC1-KAI1/CD 82 Cell Line. Technol Cancer Res Treat 2021; 20:15330338211045204. [PMID: 34605330 PMCID: PMC8493323 DOI: 10.1177/15330338211045204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 08/20/2021] [Indexed: 02/05/2023] Open
Abstract
Background: Pancreatic cancer (PC) has a poor prognosis and is prone to liver metastasis. The KAI1/CD82 gene inhibits PC metastasis. This study aimed to explore differential metabolites and enrich the pathways in serum samples between PC and liver metastasis nude mouse models stably expressing KAI1/CD82. Methods: KAI1/CD82-PLV-EF1α-MCS-IRES-Puro vector and PANC1 cell line stably expressing KAI1/CD82 were constructed for the first time. This cell line was used to construct 3 PC nude mouse models and 3 liver metastasis nude mouse models. The different metabolites and Kyoto encyclopedia of genes and genomes (KEGG) and human metabolome database (HMDB) enrichment pathways were analyzed using the serum samples of the 2 groups of nude mouse models on the basis of untargeted ultra-performance liquid chromatography-tandem mass spectrometry platform. Results: KAI1/CD82-PLV-EF1α-MCS-IRES-Puro vector and PANC1 cell line stably expressing KAI1/CD82 were constructed successfully, and all nude mouse models survived and developed cancers. Among the 1233 metabolites detected, 18 metabolites (9 upregulated and 9 downregulated) showed differences. In agreement with the literature data, the most significant differences between both groups were found in the levels of bile acids (taurocholic acid, chenodeoxycholic acid), glycine, prostaglandin E2, vitamin D, guanosine monophosphate, and inosine. Bile recreation, primary bile acid biosynthesis, and purine metabolism KEGG pathways and a series of HMDB pathways (P < .05) contained differential metabolites that may be associated with liver metastasis from PC. However, the importance of these metabolites on PC liver metastases remains to be elucidated. Conclusions: Our findings suggested that the metabolomic approach may be a useful method to detect potential biomarkers in PC.
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Affiliation(s)
- Shuo Wang
- General Hospital of Northern Theater Command of China Medical University, Shenyang, Liaoning Province, P.R. China
| | - Jiang Chen
- General Hospital of Northern Theater Command of China Medical University, Shenyang, Liaoning Province, P.R. China
| | - Hongyu Li
- General Hospital of Northern Theater Command of China Medical University, Shenyang, Liaoning Province, P.R. China
| | - Xingshun Qi
- General Hospital of Northern Theater Command of China Medical University, Shenyang, Liaoning Province, P.R. China
| | - Xu Liu
- General Hospital of Northern Theater Command of China Medical University, Shenyang, Liaoning Province, P.R. China
| | - Xiaozhong Guo
- General Hospital of Northern Theater Command of China Medical University, Shenyang, Liaoning Province, P.R. China
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Muguruma K, Pradipta AR, Ode Y, Terashima K, Michiba H, Fujii M, Tanaka K. Disease-associated acrolein: A possible diagnostic and therapeutic substrate for in vivo synthetic chemistry. Bioorg Med Chem 2020; 28:115831. [PMID: 33199202 DOI: 10.1016/j.bmc.2020.115831] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 10/23/2020] [Accepted: 10/24/2020] [Indexed: 02/07/2023]
Abstract
Acrolein, a highly reactive α,β-unsaturated aldehyde, is a compound to which humans are exposed in many different situations and often causes various human diseases. This paper summarizes the reports over the past twenty-five years regarding disease-associated acrolein detected in clinical patients and the role acrolein plays in various diseases. In several diseases, it was found that the increased acrolein acts as a pathogenetic factor. Thus, we propose the utility of over-produced acrolein as a substrate for a promising therapeutic or diagnostic method applicable to a wide range of diseases based on an in vivo synthetic chemistry strategy.
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Affiliation(s)
- Kyohei Muguruma
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 1-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Ambara R Pradipta
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 1-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yudai Ode
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 1-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Kazuki Terashima
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 1-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hiroyuki Michiba
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 1-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Motoko Fujii
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 1-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Katsunori Tanaka
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 1-12-1, Ookayama, Meguro-ku, Tokyo 152-8552, Japan; Biofunctional Synthetic Chemistry Laboratory, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan; Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, 18 Kremlyovskaya Street, Kazan 420008, Russia.
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Kidokoro Y, Sakabe T, Haruki T, Kadonaga T, Nosaka K, Nakamura H, Umekita Y. Gene expression profiling by targeted RNA sequencing in pathological stage I lung adenocarcinoma with a solid component. Lung Cancer 2020; 147:56-63. [PMID: 32673827 DOI: 10.1016/j.lungcan.2020.06.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 05/15/2020] [Accepted: 06/29/2020] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Solid predominant adenocarcinoma is considered an independent predictor of an unfavorable prognosis in patients with stage I lung adenocarcinoma (LUAD). Furthermore, solid minor components are related to poor prognosis in patients with stage I LUAD. Therefore, it is imperative to elucidate the molecular determinants of the malignant potential of solid components (SC). Several studies reported the gene expression profiling specific for lepidic predominant adenocarcinoma or solid predominant adenocarcinoma, however; there is no report identifying the differentially expressed genes (DEGs) between SC and acinar component (AC) within the same tumor tissue in pathological (p)-stage I LUAD patients. MATERIALS AND METHODS LUAD tissue samples containing both SC and AC were obtained from 8 patients with p-stage I LUAD and each component was microdissected. Targeted RNA sequencing was performed by a high-throughput chip-based approach. RESULTS In total, 1272 DEGs were identified, including 677 upregulated genes and 595 downregulated genes in SC compared with AC. The most highly upregulated gene was TATA binding protein associated factor 7 (TAF7) and the most highly downregulated gene was homeobox B3 (HOXB3), which acts as a metastasis suppressor. A protein-protein interaction (PPI) network analysis of upregulated genes in SC identified ribosomal protein S27a (RPS27a) as a hub gene with the highest degree. First neighbors of RPS27a included PSMA6, which is a highly promising target for lung cancer. The subnetwork of PD-L1 had 10 first neighbors, including CMTM6, which enhances the ability of PD-L1-expressing tumor cells to inhibit T cells. The staining score for PD-L1 in SC was significantly higher than that in AC by immunohistochemistry (p = 0.001). CONCLUSION Our results revealed several new DEGs and key PPI network in SC compared to AC, contributing to understanding the biological features of SC and providing therapeutic targets for early-stage LUAD with SC in the future.
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Affiliation(s)
- Yoshiteru Kidokoro
- Division of Pathology, Department of Pathology, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan; Division of General Thoracic Surgery, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Tomohiko Sakabe
- Division of Pathology, Department of Pathology, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Tomohiro Haruki
- Division of General Thoracic Surgery, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Taichi Kadonaga
- Division of Pathology, Department of Pathology, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan; Division of General Thoracic Surgery, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Kanae Nosaka
- Division of Pathology, Department of Pathology, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Hiroshige Nakamura
- Division of General Thoracic Surgery, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Yoshihisa Umekita
- Division of Pathology, Department of Pathology, Department of Surgery, Faculty of Medicine, Tottori University, Tottori, Japan.
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Esumi M, Sakurai S, Tanaka M. The effect of spermidine on guanine decomposition via photoinduced electron transfer in DNA. Org Biomol Chem 2020; 18:47-51. [DOI: 10.1039/c9ob01860c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The addition of spermidine caused the attenuation of guanine decomposition via photoinduced electron transfer in pyrene-modified DNA, and higher added concentrations of spermidine resulted in the promotion of decomposition in condensed DNA.
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Affiliation(s)
- Mayu Esumi
- Department of Engineering Science
- Graduate School of Informatics and Engineering
- The University of Electro-Communications
- Chofu
- Japan
| | - Shunsuke Sakurai
- Department of Engineering Science
- Graduate School of Informatics and Engineering
- The University of Electro-Communications
- Chofu
- Japan
| | - Makiko Tanaka
- Department of Engineering Science
- Graduate School of Informatics and Engineering
- The University of Electro-Communications
- Chofu
- Japan
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Chen D, Mao H, Hong Y, Tang Y, Zhang Y, Li M, Dong Y. Hexaphenyl-1,3-butadiene derivative: a novel “turn-on” rapid fluorescent probe for intraoperative pathological diagnosis of hepatocellular carcinoma. MATERIALS CHEMISTRY FRONTIERS 2020; 4:2716-2722. [DOI: 10.1039/d0qm00262c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
The staining method based on AIE-active ZZ-HPB-NC can simple distinguish the hepatocellular carcinoma from liver noncancerous tissue, which overcomes the drawbacks of the poor anti-interference ability of the authoritative clinical H&E technique.
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Affiliation(s)
- Didi Chen
- Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients
- Hubei University of Education
- Wuhan
- China
| | - Huiling Mao
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science and Engineering
- Beijing Institute of Technology
- Beijing
- China
| | - Yuning Hong
- Department of Chemistry and Physics
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - Yong Tang
- Department of Hepatobiliary Surgery
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan
| | - Yong Zhang
- Department of Hepatobiliary Surgery
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan
| | - Min Li
- Department of Hepatobiliary Surgery
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan
| | - Yuping Dong
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications
- School of Materials Science and Engineering
- Beijing Institute of Technology
- Beijing
- China
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Ogura A, Tanaka K. Next-generation Glycocluster for Achieving Pattern Recognition in Living System. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
| | - Katsunori Tanaka
- Biofunctional Synthetic Chemistry Laboratory, RIKEN Cluster for Pioneering Research
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11
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Lin Y, Vong K, Matsuoka K, Tanaka K. 2-Benzoylpyridine Ligand Complexation with Gold Critical for Propargyl Ester-Based Protein Labeling. Chemistry 2018; 24:10595-10600. [PMID: 29791049 DOI: 10.1002/chem.201802058] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/18/2018] [Indexed: 01/07/2023]
Abstract
In previously reported work, AuIII complexes coordinated with 2-benzoylpyridine ligand, BPy-Au, were prebound to a protein and used to discover a novel protein-directed labeling approach with propargyl ester functional groups. In this work, further examination discovered that gold catalysts devoid of the 2-benzoylpyridine ligand (e.g., NaAuCl4) had significantly reduced levels of protein labeling. Mechanistic investigations then revealed that BPy-Au and propargyl esters undergo a rare example of C(sp2 )-C(sp) aryl-alkynyl cross-coupling, likely through spontaneous reductive elimination. Overall, these observations appear to suggest that BPy-Au-mediated, propargyl ester-based protein labeling acts via an activated ester intermediate, which contributes to our understanding of this process and will aid the expansion/optimization of gold-catalyst usage in future bioconjugation applications, especially in vivo.
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Affiliation(s)
- Yixuan Lin
- Biofunctional Synthetic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.,Division of Material Science, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama, 338-8570, Japan
| | - Kenward Vong
- Biofunctional Synthetic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
| | - Koji Matsuoka
- Division of Material Science, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama, 338-8570, Japan
| | - Katsunori Tanaka
- Biofunctional Synthetic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.,Biofunctional Chemistry Laboratory, A. Butlerov Institute of Chemistry, Kazan Federal University, 18 Kremlyovskaya Street, 420008, Kazan, Russia.,JST-PRESTO, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
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Vanhoutte R, Kahler JP, Martin S, van Veen S, Verhelst SHL. Clickable Polyamine Derivatives as Chemical Probes for the Polyamine Transport System. Chembiochem 2018; 19:907-911. [DOI: 10.1002/cbic.201800043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Roeland Vanhoutte
- Laboratory of Chemical Biology; Department of Cellular and Molecular Medicine; KU Leuven; Herestraat 49 Box 802 3000 Leuven Belgium
| | - Jan Pascal Kahler
- Laboratory of Chemical Biology; Department of Cellular and Molecular Medicine; KU Leuven; Herestraat 49 Box 802 3000 Leuven Belgium
| | - Shaun Martin
- Laboratory of Cellular Transport Systems; Department of Cellular and Molecular Medicine; KU Leuven; Herestraat 49 Box 802 3000 Leuven Belgium
| | - Sarah van Veen
- Laboratory of Cellular Transport Systems; Department of Cellular and Molecular Medicine; KU Leuven; Herestraat 49 Box 802 3000 Leuven Belgium
| | - Steven H. L. Verhelst
- Laboratory of Chemical Biology; Department of Cellular and Molecular Medicine; KU Leuven; Herestraat 49 Box 802 3000 Leuven Belgium
- Leibniz Institute for Analytical Sciences ISAS; Otto-Hahn-Strasse 6b 44227 Dortmund Germany
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