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Abstract
OBJECTIVE To test the effects of enhanced intracellular oxygen contents on the metastatic potential of colon cancer. BACKGROUND Colorectal cancer is the commonest gastrointestinal carcinoma. Distant metastases occur in half of patients and are responsible for most cancer-related deaths. Tumor hypoxia is central to the pathogenesis of metastases. Myo-Inositoltrispyrophosphate (ITPP), a nontoxic, antihypoxic compound, has recently shown significant benefits in experimental cancer, particularly when combined with standard chemotherapy. Whether ITPP protects from distant metastases in primary colon cancer is unknown. METHODS ITPP alone or combined with FOLFOX was tested in a mouse model with cecal implantation of green fluorescent protein-labeled syngeneic colorectal cancer cells. Tumor development was monitored through longitudinal magnetic resonance imaging-based morphometric analysis and survival. Established serum markers of tumor spread were measured serially and circulating tumor cells were detected via fluorescence measurements. RESULTS ITPP significantly reduced the occurrence of metastases as well as other indicators of tumor aggressiveness. Less circulating tumor cells along with reduction in malignant serum markers (osteopontin, Cxcl12) were noted. The ITPP benefits also affected the primary cancer site. Importantly, animals treated with ITPP had a significant survival benefit compared with respective controls, while a combination of FOLFOX with ITPP conferred the maximum benefits, including dramatic improvements in survival (mean 86 vs 188 d). CONCLUSIONS Restoring oxygen in metastatic colon cancer through ITPP inhibits tumor spread and markedly improves animal survival; an effect that is enhanced through the application of subsequent chemotherapy. These promising novel findings call for a clinical trial on ITPP in patients with colorectal cancer, which is under way.
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Rigid diol bearing 6-6-6 fused ring system derived from naturally occurring myo
-inositol and its polyaddition with diisocyanates. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28765] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Sudo A, Sugita S. A highly rigid diamine monomer derived from naturally occurringmyo-inositol and its use for polyamide synthesis. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28231] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Atsushi Sudo
- Department of Applied Chemistry, Faculty of Science and Engineering; Kindai University; Kowakae 3-4-1, Higashi-Osaka 577-8502 Japan
| | - Shou Sugita
- Department of Applied Chemistry, Faculty of Science and Engineering; Kindai University; Kowakae 3-4-1, Higashi-Osaka 577-8502 Japan
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Konieczny V, Stefanakis JG, Sitsanidis ED, Ioannidou NAT, Papadopoulos NV, Fylaktakidou KC, Taylor CW, Koumbis AE. Synthesis of inositol phosphate-based competitive antagonists of inositol 1,4,5-trisphosphate receptors. Org Biomol Chem 2016; 14:2504-14. [PMID: 26818818 DOI: 10.1039/c5ob02623g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Inositol 1,4,5-trisphosphate receptors (IP3Rs) are intracellular Ca(2+) channels that are widely expressed in animal cells, where they mediate the release of Ca(2+) from intracellular stores evoked by extracellular stimuli. A diverse array of synthetic agonists of IP3Rs has defined structure-activity relationships, but existing antagonists have severe limitations. We combined analyses of Ca(2+) release with equilibrium competition binding to IP3R to show that (1,3,4,6)IP4 is a full agonist of IP3R1 with lower affinity than (1,4,5)IP3. Systematic manipulation of this meso-compound via a versatile synthetic scheme provided a family of dimeric analogs of 2-O-butyryl-(1,3,4,6)IP4 and (1,3,4,5,6)IP5 that compete with (1,4,5)IP3 for binding to IP3R without evoking Ca(2+) release. These novel analogs are the first inositol phosphate-based competitive antagonists of IP3Rs with affinities comparable to that of the only commonly used competitive antagonist, heparin, the utility of which is limited by off-target effects.
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Affiliation(s)
- Vera Konieczny
- Department of Pharmacology, Tennis Court Road, Cambridge, CB2 1PD, UK.
| | - John G Stefanakis
- Laboratory of Organic Chemistry, Chemistry Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Efstratios D Sitsanidis
- Laboratory of Organic Chemistry, Chemistry Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Natalia-Anastasia T Ioannidou
- Laboratory of Organic Chemistry, Chemistry Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Nikolaos V Papadopoulos
- Laboratory of Organic Chemistry, Chemistry Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Konstantina C Fylaktakidou
- Laboratory of Organic, Bioorganic and Natural Product Chemistry, Molecular Biology and Genetics Department, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Colin W Taylor
- Department of Pharmacology, Tennis Court Road, Cambridge, CB2 1PD, UK.
| | - Alexandros E Koumbis
- Laboratory of Organic Chemistry, Chemistry Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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SUDO A. Approach to High Performance Polymers Starting from Monosaccharides and Their Analogues. KOBUNSHI RONBUNSHU 2015. [DOI: 10.1295/koron.2014-0086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Atsushi SUDO
- Department of Applied Chemistry, Faculty of Science and Engineering, Kinki University
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Mandi P, Shoombuatong W, Phanus-umporn C, Isarankura-Na-Ayudhya C, Prachayasittikul V, Bülow L, Nantasenamat C. Exploring the origins of structure–oxygen affinity relationship of human haemoglobin allosteric effector. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2014.981180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Gurale BP, Sardessai RS, Shashidhar MS. myo-Inositol 1,3-acetals as early intermediates during the synthesis of cyclitol derivatives. Carbohydr Res 2014; 399:8-14. [PMID: 25216930 DOI: 10.1016/j.carres.2014.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 08/12/2014] [Accepted: 08/13/2014] [Indexed: 10/24/2022]
Abstract
Synthetic sequences starting from commercially available myo-inositol necessarily involve protection-deprotection strategies of its six hydroxyl groups. Several strategies have been developed/attempted over the last several decades leading to the synthesis of naturally occurring phosphoinositols, their analogs, and cyclitol derivatives. Of late, myo-inositol 1,3-acetals, which can be obtained by the reductive cleavage of myo-inositol orthoesters have emerged as early intermediates for the synthesis of phosphorylated and other inositol derivatives. This mini-review is an attempt to illustrate the economy and convenience of using myo-inositol 1,3-acetals as early intermediates during syntheses from myo-inositol.
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Affiliation(s)
- Bharat P Gurale
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pashan Road, Pune 411 008, India
| | - Richa S Sardessai
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pashan Road, Pune 411 008, India
| | - Mysore S Shashidhar
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pashan Road, Pune 411 008, India.
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Sudo A, Sano T, Harada M, Ishida D. Synthesis of Oligo(spiroketal)s from Naturally Occurring myo-Inositol. ACS Macro Lett 2014; 3:808-812. [PMID: 35590705 DOI: 10.1021/mz500353y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Dehydrating polycondensation of tetraol-type monomers derived from naturally occurring myo-inositol with 1,4-cyclohexanedione formed a series of oligo(spiroketal)s. One of the spiroketals had reactive allyl pendants, which were useful for side-chain modifications via thiol-ene chemistry.
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Affiliation(s)
- Atsushi Sudo
- Department of Applied Chemistry,
Faculty of Science and Engineering, Kinki University, Kowakae 3-4-1, Higashi Osaka, Osaka 577-8502, Japan
| | - Taichi Sano
- Department of Applied Chemistry,
Faculty of Science and Engineering, Kinki University, Kowakae 3-4-1, Higashi Osaka, Osaka 577-8502, Japan
| | - Makoto Harada
- Department of Applied Chemistry,
Faculty of Science and Engineering, Kinki University, Kowakae 3-4-1, Higashi Osaka, Osaka 577-8502, Japan
| | - Dai Ishida
- Department of Applied Chemistry,
Faculty of Science and Engineering, Kinki University, Kowakae 3-4-1, Higashi Osaka, Osaka 577-8502, Japan
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Sudo A, Shibata Y, Miyamoto A. Synthesis of high-performance polyurethanes with rigid 5-6-5-fused ring system in the main chain from naturally occurring myo
-inositol. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26805] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Atsushi Sudo
- Department of Applied Chemistry; Faculty of Science and Engineering; Kinki University; Higashi Osaka Osaka 577-8502 Japan
| | - Yoshiya Shibata
- Department of Applied Chemistry; Faculty of Science and Engineering; Kinki University; Higashi Osaka Osaka 577-8502 Japan
| | - Ayano Miyamoto
- Department of Applied Chemistry; Faculty of Science and Engineering; Kinki University; Higashi Osaka Osaka 577-8502 Japan
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Lam G, Zhao S, Sandhu J, Yi R, Loganathan D, Morrissey B. Detection of myo-inositol tris pyrophosphate (ITPP) in equine following an administration of ITPP. Drug Test Anal 2013; 6:268-76. [PMID: 23733541 DOI: 10.1002/dta.1473] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 02/15/2013] [Accepted: 02/17/2013] [Indexed: 11/06/2022]
Abstract
Myo-Inositol tris pyrophosphate (ITPP) is a powerful allosteric modulator of haemoglobin that increases oxygen-releasing capacity of red blood cells. It is capable of crossing the red blood cell membrane unlike its open polyphosphate analog myo-inositol hexakisphosphate (IHP). Systemic administration of ITPP enhanced the exercise capacity in mice. There have been rumours of its abuse in the horse racing industry to enhance the performance of racing horses. In this paper, the detection of ITPP in equine plasma and urine after an administration of ITPP is reported. A Standardbred mare was administered 200 mg of ITPP intravenously. Urine and plasma samples were collected up to 120 h post administration and analyzed for ITPP by liquid chromatography-tandem mass spectrometry. ITPP was detected in post administration plasma samples up to 6 hours. The peak concentration was detected at 5 min post administration. In urine, ITPP was detected up to 24 h post administration. The peak concentration was detected at 1.5 h post administration.
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Affiliation(s)
- Geoffrey Lam
- Maxxam Analytics Inc., 8577 Commerce Court, Burnaby, BC, V5A 4N5, Canada
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Varvogli AAC, Fylaktakidou KC, Farmaki T, Stefanakis JG, Koumbis AE. Versatile Synthesis of 1- O-(ω-Aminolauryl)-I(4,5)P 2. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Sardessai R, Krishnaswamy S, Shashidhar MS. Achieving molecular stability of racemic 4-O-benzyl-myo-inositol-1,3,5-orthoformate through crystal formation. CrystEngComm 2012. [DOI: 10.1039/c2ce26199e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Fylaktakidou KC, Duarte CD, Jogireddy R, Koumbis AE, Nicolau C, Lehn JM. Polyphosphates and Pyrophosphates of Pentopyranoses and Pentofuranoses as Allosteric Effectors of Human Hemoglobin: Synthesis, Molecular Recognition, and Oxygen Release. ChemMedChem 2011; 6:1495-508. [DOI: 10.1002/cmdc.201100110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2011] [Revised: 05/02/2011] [Indexed: 01/25/2023]
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