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Hussain H, Ali I, Elizbit, Hussain W, Mamadalieva NZ, Hussain A, Ali M, Ahmed I, Ullah I, Green IR. Synthetic Studies towards Fungal glycosides: An Overview. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201105160034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fungi have provided intriguing chemical diversity and have additionally proven to
be a tremendous source for a great variety of therapeutic molecules. Various fungal glycosides
have been reported from fungi and the majority of these metabolites possess cytotoxic and
antimicrobial effects. Although natural products are obtained in most cases in small amounts
from the specific natural source, total syntheses of these valuable commodities remain one of
the most important ways of obtaining them on a large scale for more detailed and comprehensive
biological studies. In addition, the total synthesis of secondary metabolites is a useful
tool, not only for the disclosure of novel complex pharmacologically active molecules but also
for the establishment of cutting-edge methodologies in synthetic chemistry. Numerous fungal
glycosides have been synthesized in the last four decades regarding the following natural
product classes viz., tetramic acid glycosides (epicoccamides A and D), polyketide glycosides (TMC-151C), 2-pyrone
glycosides (epipyrone A), diterpene glycosides (sordarin), depside glycosides (CRM646-A and –B, KS-501 and KS-
502), caloporosides (caloporoside A), glycolipids (emmyguyacins A and B, acremomannolipin A), and cerebrosides
(cerebroside B, Asperamide B, phalluside-1, Sch II). The current literature review about fungal glycoside synthetic
studies is, therefore, of interest for a wide range of scientists and researchers in the field of organic, natural product,
and medicinal chemists as it outlines key strategies of fungal glycosides and, in particular, glycosylation, the known
biological and pharmacological effects of these natural compounds have afforded a new dimension of exposure.
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Affiliation(s)
- Hidayat Hussain
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, D-06120 Halle (Saale), Germany
| | - Iftikhar Ali
- Shandong Key Laboratory of TCM Quality Control Technology, Shandong Analysis and Test Center, Jinan, Shandong Province (250014), China
| | - Elizbit
- Department Materials Engineering, National University of Sciences and Technology (NUST) H12, Islamabad, Pakistan
| | - Wahid Hussain
- Department of Botany, Government Post Graduate College Parachinar, District Kurram, Pakistan
| | - Nilufar Z. Mamadalieva
- Institute of the Chemistry of Plant Substances of the Academy Sciences of Uzbekistan, Tashkent 100170, Uzbekistan
| | - Amjad Hussain
- Department of Chemistry University of Okara, Okara, Pakistan
| | - Maroof Ali
- College of life Sciences, Anhui Normal University, Wuhu 241000, China
| | - Ishtiaq Ahmed
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, England, United Kingdom
| | - Izhar Ullah
- Department of Biotechnology, University of Kotli, Azad Jammu and Kashmir, Pakistan
| | - Ivan R. Green
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch 7600, South Africa
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Gracia-Hernandez M, Sotomayor EM, Villagra A. Targeting Macrophages as a Therapeutic Option in Coronavirus Disease 2019. Front Pharmacol 2020; 11:577571. [PMID: 33324210 PMCID: PMC7723423 DOI: 10.3389/fphar.2020.577571] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/23/2020] [Indexed: 12/13/2022] Open
Abstract
Immune cells of the monocyte/macrophage lineage are characterized by their diversity, plasticity, and variety of functions. Among them, macrophages play a central role in antiviral responses, tissue repair, and fibrosis. Macrophages can be reprogrammed by environmental cues, thus changing their phenotype during an antiviral immune response as the viral infection progresses. While M1-like macrophages are essential for the initial inflammatory responses, M2-like macrophages are critical for tissue repair after pathogen clearance. Numerous reports have evaluated the detrimental effects that coronaviruses, e.g., HCoV-229E, SARS-CoV, MERS-CoV, and SARS-CoV-2, have on the antiviral immune response and macrophage functions. In this review, we have addressed the breadth of macrophage phenotypes during the antiviral response and provided an overview of macrophage-coronavirus interactions. We also discussed therapeutic approaches to target macrophage-induced complications, currently under evaluation in clinical trials for coronavirus disease 2019 patients. Additionally, we have proposed alternative approaches that target macrophage recruitment, interferon signaling, cytokine storm, pulmonary fibrosis, and hypercoagulability.
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Affiliation(s)
- Maria Gracia-Hernandez
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, DC, United States
- The George Washington University Cancer Center, School of Medicine and Health Sciences, The George Washington University, Washington, DC, United States
| | - Eduardo M. Sotomayor
- The George Washington University Cancer Center, School of Medicine and Health Sciences, The George Washington University, Washington, DC, United States
| | - Alejandro Villagra
- Department of Biochemistry and Molecular Medicine, School of Medicine and Health Sciences, The George Washington University, Washington, DC, United States
- The George Washington University Cancer Center, School of Medicine and Health Sciences, The George Washington University, Washington, DC, United States
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Peng SL, Lai CH, Chu PY, Hsieh JT, Tseng YC, Chiu SC, Lin YH. Nanotheranostics With the Combination of Improved Targeting, Therapeutic Effects, and Molecular Imaging. Front Bioeng Biotechnol 2020; 8:570490. [PMID: 33042972 PMCID: PMC7523243 DOI: 10.3389/fbioe.2020.570490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/27/2020] [Indexed: 12/27/2022] Open
Abstract
There is an increasing interest in the design of targeted carrier systems with combined therapeutic and diagnostic modalities. Therapeutic modalities targeting tumors with single ligand-based targeting nanocarriers are insufficient for proficient delivery and for targeting two different surface receptors that are overexpressed in cancer cells. Here, we evaluated an activated nanoparticle delivery system comprising fucoidan/hyaluronic acid to improve therapeutic efficacy. The system comprised polyethylene glycol-gelatin-encapsulated epigallocatechin gallate (EGCG), poly (D,L-lactide-co-glycolide; PLGA), and stable iron oxide nanoparticles (IOs). The latter enables targeting of prostate cancers in their molecular images. We demonstrate the transfer of nanoparticles and their entry into prostate cancer cells through ligand-specific recognition. This system may prove the benefits of drug delivery that enhances the inhibition of cell growth through apoptosis induction. Moreover, the improved targeting of nanotheranostics significantly suppressed orthotopic prostate tumor growth and more accurately targeted tumors compared with systemic combination therapy. In the presence of nanoparticles with iron oxides, the hypointensity of the prostate tumor was visualized on a T2-weignted magnetic resonance image. The diagnostic ability of this system was demonstrated by accumulating fluorescent nanoparticles in the prostate tumor from the in vivo imaging system, computed tomography. It is suggested that theranostic nanoparticles combined with a molecular imaging system can be a promising cancer therapy in the future.
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Affiliation(s)
- Shin-Lei Peng
- Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung, Taiwan
| | - Chih-Ho Lai
- Department of Microbiology and Immunology, Molecular Infectious Disease Research Center, Chang Gung University, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Pei-Yi Chu
- Faculty of Pharmacy, National Yang-Ming University, Taipei, Taiwan
| | - Jer-Tsong Hsieh
- Department of Urology, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Yen-Chun Tseng
- Department of Biological Science and Technology, China Medical University, Taichung, Taiwan
| | - Shao-Chieh Chiu
- Center for Advanced Molecular Imaging and Translation, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Yu-Hsin Lin
- Faculty of Pharmacy, National Yang-Ming University, Taipei, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
- Institute of Biopharmaceutical Science, Department and Institute of Pharmacology, Center for Advanced Pharmaceutics and Drug Delivery Research, National Yang-Ming University, Taipei, Taiwan
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Roy S, Kar M, Roy S, Padhi S, Kumar A, Thakur S, Akhter Y, Gatto G, Banerjee B. Inhibition of CD44 sensitizes cisplatin-resistance and affects Wnt/β-catenin signaling in HNSCC cells. Int J Biol Macromol 2020; 149:501-512. [PMID: 31953176 DOI: 10.1016/j.ijbiomac.2020.01.131] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/20/2019] [Accepted: 01/13/2020] [Indexed: 02/07/2023]
Abstract
CD44 is one of the key cancer stem-like cell (CSC) marker and may have a potential role in tumorigenesis. In this study, we investigated the role of CD44 in prognosis of HNSCC patients, its possible crosstalk with Wnt/β-catenin signaling and modulating cisplatin resistance. We observed increased expression of CD44 in the cut margin of recurrent HNSCC patients were associated with poor prognosis. We observed that inhibition of CD44 by using 1,2,3,4 tetrahydroisoquinoline (THIQ) modulates the expression of Wnt/ β-catenin signaling proteins and further silencing of β-catenin also decreases the expression of CD44. This led us to investigate the possible protein-protein interaction between CD44 and β-catenin. Co-immunoprecipitation study illustrated possible interaction between CD44 and β-catenin which was further confirmed by molecular docking and molecular dynamic (MD) simulation studies. Molecular docking study revealed that one interface amino acid residue Glu642 of β -catenin interacts with Lys92 of CD44 which was also present for 20% of simulation time. Furthermore, we observed that inhibition of CD44 chemosensitizes cisplatin-resistant HNSCC cells towards cisplatin. In conclusion, this study investigated the possible role of CD44 along with Wnt/ β-catenin signaling and their possible therapeutic role to abrogate cisplatin resistance.
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Affiliation(s)
- Souvick Roy
- Molecular Stress and Stem Cell Biology Group, School of Biotechnology, KIIT, Bhubaneswar, Odisha 751024, India
| | - Madhabananda Kar
- Department of Surgical Oncology, All India Institute of Medical Sciences (AIIMS), Bhubaneswar, Odisha 751019, India
| | - Shomereeta Roy
- Molecular Stress and Stem Cell Biology Group, School of Biotechnology, KIIT, Bhubaneswar, Odisha 751024, India
| | - Swatishree Padhi
- Molecular Stress and Stem Cell Biology Group, School of Biotechnology, KIIT, Bhubaneswar, Odisha 751024, India
| | - Amit Kumar
- Department of Electrical and Electronic Engineering, University of Cagliari, via Marengo 2, 09123 Cagliari, Italy
| | - Shweta Thakur
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, Himachal Pradesh 176206, India
| | - Yusuf Akhter
- Centre for Computational Biology and Bioinformatics, School of Life Sciences, Central University of Himachal Pradesh, Shahpur, Himachal Pradesh 176206, India; Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, Uttar Pradesh 226025, India
| | - Gianluca Gatto
- Department of Electrical and Electronic Engineering, University of Cagliari, via Marengo 2, 09123 Cagliari, Italy
| | - Birendranath Banerjee
- Molecular Stress and Stem Cell Biology Group, School of Biotechnology, KIIT, Bhubaneswar, Odisha 751024, India.
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Jeong HY, Baek SH, Chang SJ, Cheon SA, Park TJ. Robust fluorescence sensing platform for detection of CD44 cells based on graphene oxide/gold nanoparticles. Colloids Surf B Biointerfaces 2015; 135:309-315. [PMID: 26263218 DOI: 10.1016/j.colsurfb.2015.07.083] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 07/04/2015] [Accepted: 07/30/2015] [Indexed: 11/24/2022]
Abstract
Gold-coated graphene oxide hybrid material (GO/AuNPs) has exceptional physical and chemical properties like π-π stacking interaction and plays a role in quencher of fluorescence dye. Therefore, GO/AuNPs could enhance the signal-to-background ratio with fluorescence dye that was the point in this fluorescent biosensor. In this study, tetramethyl-6-carboxy-rhodamine (TAMRA)-labeled aptamers that specifically interact with the hyaluronic acid binding domain of CD44 were used as targets to investigate the applicability of the method. GO/AuNPs-TAMRA-aptamer complexes could detect CD44 target cancer cells within a concentration range of 1 × 10(1) to 1 × 10(7) CFU/mL. A linear relationship was observed between target cell concentration and relative fluorescence intensity. The more mounted up CD44 target cell concentrations, relative fluorescence intensity of GO/AuNPs-TAMRA-aptamer complexes was increased even more, which was superior to that of GO alone. Sensitivity of the detection system displayed a low detection limit of 1 × 10(1) CFU/mL. Additionally, this method is specific in that fluorescence is not much enhanced in CD44 negative cancer cell line. Thus, the fluorescence sensing based on GO/AuNPs could be developed to receptive and robust detection tool for various target molecules.
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Affiliation(s)
- Ha Young Jeong
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Seung Hun Baek
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Sung-Jin Chang
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Seon Ah Cheon
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 156-756, Republic of Korea
| | - Tae Jung Park
- Department of Chemistry, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 156-756, Republic of Korea.
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Lu X, Huang X. Design and syntheses of hyaluronan oligosaccharide conjugates as inhibitors of CD44-Hyaluronan binding. Glycoconj J 2015; 32:549-56. [PMID: 25997408 DOI: 10.1007/s10719-015-9597-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 04/14/2015] [Accepted: 05/08/2015] [Indexed: 10/23/2022]
Abstract
Hyaluronan (HA) is an integral component of the extracellular matrix. Its interactions with a cell surface receptor CD44 has been shown to play important roles in a variety of biological events including cell proliferation and metastasis. As multivalent CD44-HA binding is critical for downstream signaling, compounds that can selectively disrupt the complex formation of HA polysaccharide with CD44 can serve as useful probes of CD44 mediated cellular events as well as potential leads for novel therapeutics. Herein, we report the synthesis of several series of HA conjugates to target the HA binding pocket of CD44. As a small library of HA disaccharide derivatives failed to exhibit any inhibitory activities, we focused on HA tetrasaccharide based analogs. Traditional synthetic strategies towards HA oligosaccharides involve the construction of backbone from the corresponding monosaccharide building blocks, which can be quite tedious. In order to expedite the synthesis, we designed a new synthetic route taking advantage of the ability of hyaluronidase to generate large quantities of HA tetrasaccharide through digestion of HA polysaccharides. The HA tetrasaccharide obtained was utilized to prepare multiple S-linked HA analogs bearing aromatic groups at the reducing end glycan. One such compound containing an m-benzyl phenyl moiety exhibited significant inhibition of CD44-HA binding. Our approach provides a new direction towards the design of HA based CD44 antagonists.
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Affiliation(s)
- Xiaowei Lu
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, East Lansing, MI, 48824, USA.,NIDDK, National Institutes of Health, Building 8, Room 1A21, 9000 Rockville Pike, Bethesda, MD, 20892-0815, USA
| | - Xuefei Huang
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, East Lansing, MI, 48824, USA.
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Jia T, Fu C, Huang C, Yang H, Jia N. Highly sensitive naphthalimide-based fluorescence polarization probe for detecting cancer cells. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10013-10021. [PMID: 25898141 DOI: 10.1021/acsami.5b02429] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fluorescence polarization (FP)-based signal is a self-referencing fluorescence signal, and it is less dependent on dye concentration and environmental interferences, which makes FP measurement an attractive alternative sensing technology to fluorescence intensity-based detection. However, most of the fluorescence polarization probes were constructed by introducing fluorescein, rhodamine, and cyanine dyes, which have relatively shorter excited-state lifetimes compared with BODIPY and naphthalimide dyes. Herein, a first naphthalimide based fluorescence polarization probe (BIO) was designed and synthesized for selective and direct detection of cancer cells. The relatively longer excited-state lifetimes and high photostability of naphthalimide makes BIO more sensitive and accuracy in quantitative determination of HeLa cells in homogeneous solution without cell lysis and further separation steps. The detection limit of BIO for HeLa cells was about 85 cells mL(-1), the linear range was from 2.5 × 10(2) cells mL(-1) to 1 × 10(6) cells mL(-1) and the response time is no more than 25 min. Moreover, due to the relatively high photostability of naphthalimide, BIO was particularly suitable for live cell imaging under continuous irradiation with confocal microscopy, and the specific interaction of BIO with CD44-overexpressing cell lines was clearly visualized. Importantly, this BIO based sensing platform offers a direct and real-time tool for cancer cell diagnosis when complemented with the use of naphthalimide-based fluorescence polarization probe.
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Affiliation(s)
- Ti Jia
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Department of Chemistry, College of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
| | - Congying Fu
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Department of Chemistry, College of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
| | - Chusen Huang
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Department of Chemistry, College of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
| | - Haotian Yang
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Department of Chemistry, College of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
| | - Nengqin Jia
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Department of Chemistry, College of Life and Environmental Sciences, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China
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Polymeric nanoparticle-mediated silencing of CD44 receptor in CD34+ acute myeloid leukemia cells. Leuk Res 2014; 38:1299-308. [DOI: 10.1016/j.leukres.2014.08.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 07/15/2014] [Accepted: 08/16/2014] [Indexed: 01/23/2023]
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Varghese OP, Sun W, Hilborn J, Ossipov DA. In situ cross-linkable high molecular weight hyaluronan-bisphosphonate conjugate for localized delivery and cell-specific targeting: a hydrogel linked prodrug approach. J Am Chem Soc 2009; 131:8781-3. [PMID: 19499915 DOI: 10.1021/ja902857b] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We present here a novel synthesis route to functionalize high molecular weight hyaluronan (HMW-HA) with a hydrazide group and a bioactive ligand, namely bisphosphonate (BP). For this purpose, a new symmetrical self-immolative biscarbazate linker has been devised. The hydrazide group was used to form hydrazone cross-linked hydrogel upon treating with previously described aldehyde modified hyaluronan. The 1:1 weight ratio of these two polymers gave hydrogel in less than 30 s. In this communication we present the first in vitro results showing that even though HA can target CD44 positive cancer cells (HCT-116), receptor mediated endocytosis could only occur by cleavage of high molecular weight HA with an ubiquitous enzyme, hyaluronidase (Hase). The cancer cells are known to overexpress CD44 receptors and also increase the hyaluronidase activity in vivo. Thus the pro-drug design, based on drug conjugation to HMW-HA, represents a new drug delivery platform where the drug potency is triggered by Hase mediated degradation of the HA-drug conjugate. We have successfully demonstrated that the cross-linkable HA-BP conjugate first undergoes Hase-mediated scission to the fragments of suitable sizes so as to be internalized by CD44 positive cells. The specificity of this targeting was proven by comparing the results with less CD44 positive HEK-293T cells. The localized delivery of such drugs at the surgical resection site opens up avenues to control tumor recurrence after removal of the tumor. In the form of hydrogel it would prevent systemic exposure of the drug and would allow its controlled release.
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Affiliation(s)
- Oommen P Varghese
- Material Chemistry Department, Uppsala University, Angstrom Laboratory, S-75121 Uppsala, Sweden
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Hirota-Takahata Y, Harada H, Tanaka I, Nakata T, Nakajima M, Takahashi M. F-19848 A, a novel inhibitor of hyaluronic acid binding to cellular receptor CD44. J Antibiot (Tokyo) 2008; 60:633-9. [PMID: 17965479 DOI: 10.1038/ja.2007.81] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In the course of our screening for inhibitors of hyaluronic acid (HA) binding to cellular receptor CD44, a novel inhibitor, F-19848 A, was isolated from the cultured broth of the fungus strain Dacrymyces sp. SANK 20204. This compound inhibited the binding of CD44 and HA with an IC50 value of 23.5 microM and CD44-dependent HA degradation was inhibited with an IC50 value of 98.6 microM in a cell-based assay. The structure was elucidated by physico-chemical properties, analysis of spectral data, and decomposition experiments.
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Affiliation(s)
- Yuki Hirota-Takahata
- Advanced Technology Research Laboratories, Daiichi-Sankyo Co., Ltd., Tokyo, Japan
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Hirota-Takahata Y, Harada H, Tanaka I, Nakata T, Nakajima M, Takahashi M. F-16438s, Novel Binding Inhibitors of CD44 and Hyaluronic Acid. J Antibiot (Tokyo) 2006; 59:777-84. [PMID: 17323644 DOI: 10.1038/ja.2006.102] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In the course of our screening for binding inhibitors of CD44 and hyaluronic acid, five active compounds, F-16438 A, B, E, F and G were found and isolated from the cultured broth of a fungal strain, Gloeoporus dichrous SANK 30502. The structures of these compounds except for F-16438 G were elucidated by physico-chemical and spectral data to be new compounds related to caloporoside; F-16438 G was identified to be the 6'-malonylated derivative of caloporoside.
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Affiliation(s)
- Yuki Hirota-Takahata
- Core Technology Research Laboratories, Sankyo Co., Ltd., 1-2-58 Hiromachi, Shinagawa-ku, Tokyo 140-8710, Japan
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