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Phenylene-linked tetrapyrrole arrays containing free base and diverse metal chelate forms – Versatile synthetic architectures for catalysis and artificial photosynthesis. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214278] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Alhamami M, Cheng W, Lyu Y, Allen C, Zhang XA, Cheng HLM. Manganese-porphyrin-enhanced MRI for the detection of cancer cells: A quantitative in vitro investigation with multiple clinical subtypes of breast cancer. PLoS One 2018; 13:e0196998. [PMID: 29795583 PMCID: PMC5993062 DOI: 10.1371/journal.pone.0196998] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 04/24/2018] [Indexed: 01/26/2023] Open
Abstract
Magnetic resonance imaging (MRI) contrast agents (CAs) are chemical compounds that can enhance image contrast on T1- or T2- weighted MR image. We have previously demonstrated the potential of MnCl2, a manganese-based CA, in cellular imaging of breast cancer using T1-weighted MRI. In this work, we examined the potential of another class of manganese-based CAs, manganese porphyrins (MnPs), for sensitive cellular detection of multiple clinical subtypes of breast cancer using quantitative MRI. Using a clinical 3.0-T MRI scanner, the relaxivities of two MnPs, MnTPPS4 and MnTPPS3NH2, and conventional Gd-DTPA (control) were measured in ultrapure water and their T1 contrast enhancement patterns were characterized in multiple clinical subtypes of breast cancer. The toxicity of the three CAs was evaluated in vitro. Compared to Gd-DTPA, both MnTPPS3NH2 and MnTPPS4 enabled a more sensitive multi-subtype detection of four breast cell lines at doses that posed no cytotoxic effects, with MnTPPS3NH2 producing the greatest positive enhancement. The superior T1 enhancement capabilities of MnPs over Gd-DTPA are statistically significant and are likely due to their greater cellular uptake and relaxivities. The results demonstrate that multiple clinical subtypes of breast cancer can be imaged on a 3.0-T MRI scanner using MnPs as T1 cellular CAs.
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Affiliation(s)
- Mosa Alhamami
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Translational Medicine, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
| | - Weiran Cheng
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
| | - Yuanyuan Lyu
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
- School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang, P. R. China
| | - Christine Allen
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Spatio-Temporal Targeting and Amplification of Radiation Response (STTARR) Innovation Centre, Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada
| | - Xiao-an Zhang
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, Ontario, Canada
| | - Hai-Ling Margaret Cheng
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
- Translational Medicine, Hospital for Sick Children Research Institute, Toronto, Ontario, Canada
- The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario, Canada
- Translational Biology and Engineering Program, Ted Rogers Centre for Heart Research, Toronto, Ontario, Canada
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Feng G, Mi H, Fei Q, Shan H, Wang B, Xu H, Li G, Chen F, Huan Y. A facile fluorescent chemosensor based on a water-soluble porphyrin for Mo(6+) in aqueous solution. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 167:122-126. [PMID: 27262661 DOI: 10.1016/j.saa.2016.05.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 05/24/2016] [Accepted: 05/24/2016] [Indexed: 05/16/2023]
Abstract
A novel water-soluble porphyrin (5,10,15,20-tetra(3-ethoxy-4-hydroxy-5-sulfonate) phenylporphyrin, H2TEHPPS) was synthesized. H2TEHPPS exhibited high sensitivity and selectivity towards Mo(6+). The enhanced fluorescence response of H2TEHPPS after titration with Mo(6+) in aqueous solution at pH3.5 was attributed to the formation of an inclusion complex between the porphyrin ring and Mo(6+), which R(2)=0.999 from 10 to 1000μgL(-1), providing a detection limit of 1.5μgL(-1). The fluorescence response of H2TEHPPS towards Mo(6+) showed excellent selectivity over other transition metal cations.
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Affiliation(s)
- Guodong Feng
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China; State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Hongyu Mi
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Qiang Fei
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Hongyan Shan
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Baojun Wang
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Hui Xu
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Guanghua Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
| | - Fei Chen
- Changchun Institute of Metrology, Changchun 130012, China
| | - Yanfu Huan
- College of Chemistry, Jilin University, Jiefang Road 2519, Changchun 130021, China
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Gianferrara T, Serli B, Zangrando E, Iengo E, Alessio E. Pyridylporphyrins peripherally coordinated to ruthenium-nitrosyls, including the water-soluble Na4[Zn·4′TPyP{RuCl4(NO)}4]: synthesis and structural characterization. NEW J CHEM 2005. [DOI: 10.1039/b418855a] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nasu H, Takehara Y, Isogai S, Kodaira N, Takeda H, Saga T, Nakajima S, Sakata I, Sakahara H. Tumor enhancement using Mn-metalloporphyrin in mice: Magnetic resonance imaging and histopathologic correlation. J Magn Reson Imaging 2004; 20:294-9. [PMID: 15269956 DOI: 10.1002/jmri.20112] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
PURPOSE To determine the signal enhancement characteristics of tumors after administration of a metalloporphyrin derivative, HOP-9P (13, 17-bis (1-carboxypropionyl) carbamoylethyl-3, 8-bis (1-phenylpropyloxyethyl)-2, 7, 12, 18-tetramethyl-porphyrinato manganese (III)) and to determine whether HOP-9P is tumor-necrosis specific. MATERIALS AND METHODS Ten C3H/He mice bearing a SCC VII tumor in the right flank were examined using T1-weighted conventional spin echo magnetic resonance (MR) imaging before contrast injection, and five minutes, one hour, and 24 hours after intravenous administration of 0.1 mmol/kg of HOP-9P. Following the imaging schedule, the mice were sacrificed, and sectioned in the same axial planes as the MR images. Based on an MR imaging-histopathologic correlation, mean signal intensities were measured, and signal-to-noise ratios (SNR) were calculated for both pure viable component and admixture of necrotic and viable component of the tumor. RESULTS Mean SNR of the pure viable component peaked at one hour (35.0 +/- 3.8) and maintained that level until 24 hours (34.6 +/- 3.6). Mean SNR of the admixture of necrotic and viable component peaked at 24 hours (44.3 +/- 12.1). CONCLUSION Although different enhancement patterns were seen between the pure viable component and the admixture of necrotic and viable component, HOP-9P enhanced both of the two components.
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Affiliation(s)
- Hatsuko Nasu
- Department of Radiology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka 431-3192, Japan
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Takehara Y, Sakahara H, Masunaga H, Isogai S, Kodaira N, Takeda H, Saga T, Nakajima S, Sakata I. Tumour enhancement with newly developed Mn-metalloporphyrin (HOP-9P) in magnetic resonance imaging of mice. Br J Cancer 2001; 84:1681-5. [PMID: 11401324 PMCID: PMC2363677 DOI: 10.1054/bjoc.2001.1802] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The purpose of the study is to evaluate the tumour enhancing characteristics and biodistribution of a newly developed metalloporphyrin derivative, HOP-9P (13, 17-bis (1-carboxypropionyl) carbamoylethyl-3, 8-bis (1-phenylpropyloxyethyl)-2,7,12,18-tetra- methyl-porphynato manganese (III)). Seven mice bearing SCC VII tumours were imaged using T1-weighted conventional spin echo magnetic resonance images before and 5 min, 2 h and 24 h after intravenous injection of 0.1 mmol/kg of HOP-9P. For the acquired images, signal intensities of the tumour, muscle and oil-phantom were measured. Then, tumor/oil and tumor/muscle signal intensity ratios were calculated. Nineteen mice were sacrificed before or after the administration of HOP-9P (at 5 min, 2 h and 24 h), and the biodistribution of manganese in the tumour, muscle, liver, blood and kidneys was measured using optical emission spectrometers and was expressed as micrograms of manganese per gram of tissue. The tumour/muscle signal intensity ratio at 24 h (3.18 +/- 0.34) was significantly higher than precontrast ratio (1.77 +/- 0.20) (P < 0.05). The biodistribution assessment of manganese demonstrated that HOP-9P gradually and consistently accumulated in the tumour to reach the highest concentration at 24 h (3.49 +/- 1.22 micro gMn/g). It is concluded that HOP-9P is a potential tumour-specific MR contrast agent.
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Affiliation(s)
- Y Takehara
- Department of Radiology, Hamamatsu University School of Medicine, 3600 Handa, Hamamtsu 431-3192, Japan
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Hofmann B, Bogdanov A, Marecos E, Ebert W, Semmler W, Weissleder R. Mechanism of gadophrin-2 accumulation in tumor necrosis. J Magn Reson Imaging 1999; 9:336-41. [PMID: 10077034 DOI: 10.1002/(sici)1522-2586(199902)9:2<336::aid-jmri28>3.0.co;2-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The molecular mechanism by which gadophrin-2 targets necrotic tumor tissue was investigated. Biodistribution studies and magnetic resonance imaging (MRI) and histologic/autoradiographic correlation were performed in xenograft mouse models bearing human tumors (HT 29, WiDr, LX 1). Binding of gadophrin-2 to DNA, lipids, or proteins was determined by fluorescence spectrophotometry. Protein binding was determined by dialysis and gel electrophoresis. Accumulation of gadophrin-2 was low (<0.7% injected dose/g tissue at 24 hours after injection) in viable tumor but higher in necrotic tumor regions and was readily detectable by MRI. Within a given tumor, the agent preferentially localized in the periphery of necrotic areas. Within these regions gadophrin-2 was bound to interstitial albumin and not other proteins, lipids, or DNA. Tumoral accumulation of gadophrin-2 most likely occurs through its binding to plasma albumin and subsequent slow extravasation into the tumor interstitium.
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Affiliation(s)
- B Hofmann
- Center for Molecular Imaging Research, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown 02129, USA
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Song R, Robert A, Bernadou J, Meunier B. Sulfonated and acetamidosulfonylated tetraarylporphyrins as biomimetic oxidation catalysts under aqueous conditions. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(97)05944-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Bockhorst K, Hoehn-Berlage M. An optimized synthesis of manganese meso-tetra(4-sulfonatophenyl)porphine: A tumor-selective MRI contrast agent. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)85339-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pitié M, Casas C, Lacey CJ, Pratviel G, Bernadou J, Meunier B. Selektive Spaltung einer 35mer-Einzelstrang-DNA, die den Startcodon des TAT-Gens von HIV-1 enthält, durch ein maßgeschneidertes kationisches Manganporphyrin-Konjugat. Angew Chem Int Ed Engl 1993. [DOI: 10.1002/ange.19931050426] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Fiel R, Mark E, Button T, Gilani S, Musser D. Tumor-selective contrast enhancing agent, Mn(III)meso- [tri(4-sulfonatophenyl)phenyl]porphine (MnTPPS3). Magn Reson Imaging 1993; 11:1079-81. [PMID: 8231675 DOI: 10.1016/0730-725x(93)90231-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Wilmes LJ, Hoehn-Berlage M, Els T, Bockhorst K, Eis M, Bonnekoh P, Hossmann KA. In vivo relaxometry of three brain tumors in the rat: effect of Mn-TPPS, a tumor-selective contrast agent. J Magn Reson Imaging 1993; 3:5-12. [PMID: 8428101 DOI: 10.1002/jmri.1880030103] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
T1 and T2 were determined simultaneously in vivo at 4.7 T in implanted rat brain tumors. Three different tumor cell lines were implanted in the right caudate nucleus: the F98 glioma, the E367 neuroblastoma, and the RN6 schwannoma. Their T1 and T2 values (mean +/- standard deviation [msec]), respectively, were 1,312 +/- 107 and 89 +/- 3 (glioma), 1,284 +/- 86 and 87 +/- 7 (neuroblastoma), and 1,338 +/- 85 and 86 +/- 9 (schwannoma). The T1 values (msec) of normal brain and muscle were 1,090 +/- 59 and 1,139 +/- 77, respectively, and the T2 values (msec) were 76 +/- 3 and 36 +/- 2, respectively. After injection of the contrast agent manganese (III) tetraphenylporphine sulfonate (TPPS) the T1 of all three tumors decreased by 30% and the T2 by 10%, whereas no such change in relaxivity was noted in normal brain. As a result, strong contrast enhancement of the three tumor types was seen on T1-weighted images. The tumor was clearly delineated and correlated with findings at histologic examination. This tumor enhancement was followed up for 4 days with quantitative relaxation time measurements, and the strong, selective reduction in T1 for all three tumor types after Mn-TPPS injection was preserved over the entire observation period.
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Affiliation(s)
- L J Wilmes
- Max-Planck-Institut für Neurologische Forschung, Abteilung für Experimentelle Neurologie, Köln, Germany
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Ding L, Balzarini J, Schols D, Meunier B, de Clercq E. Anti-human immunodeficiency virus effects of cationic metalloporphyrin-ellipticine complexes. Biochem Pharmacol 1992; 44:1675-9. [PMID: 1384504 DOI: 10.1016/0006-2952(92)90486-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of cationic metalloporphyrin-ellipticine complexes were found to inhibit the cytopathicity of human immunodeficiency virus type 1 (HIV-1) and simian immunodeficiency virus in MT-4 cells at concentrations ranging from 1.4 to 17 micrograms/mL, i.e. at a concentration that was 2.5-30-fold below the cytotoxicity threshold. These compounds were also found to inhibit syncytium formation between persistently HIV-1-infected HUT-78 and uninfected Molt/4 cells, to interfere with HIV-1 binding to the cells, and to suppress HIV-1-associated reverse transcriptase activity.
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Affiliation(s)
- L Ding
- Laboratoire de Chimie de Coordination du CNRS, Toulouse, France
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Hoehn-Berlage M, Norris D, Bockhorst K, Ernestus RI, Kloiber O, Bonnekoh P, Leibfritz D, Hossmann KA. T1 snapshot FLASH measurement of rat brain glioma: kinetics of the tumor-enhancing contrast agent manganese (III) tetraphenylporphine sulfonate. Magn Reson Med 1992; 27:201-13. [PMID: 1461108 DOI: 10.1002/mrm.1910270202] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The ultrafast inversion recovery snapshot FLASH technique was used to determine the kinetics of the contrast agent manganese (III) tetraphenylporphine sulfonate (MnTPPS) in experimental brain tumors in rats. In the first part of the investigation this technique was validated with the conventional inversion recovery spin-echo method by comparing in vivo T1 data of a normal rat brain. Agreement between T1 values obtained from both techniques was complete, as tested for a large number of pixels in identical coronal slices. In the second part the fast IR snapshot FLASH method was applied to study the effect of the NMR contrast agent MnTPPS on the T1 relaxation time of experimental gliomas in rat brains. T1 of normal brain tissue (1024-1035 ms), tumor (1217 ms), and edema (1199 ms) was determined with the inversion recovery version of the snapshot FLASH imaging technique. After intraperitoneal injection of MnTPPS (0.25 mmol/kg body wt) T1 decreased exponentially to 56% of control in tumor and to 62% in muscle. In normal and edematous brain tissue no significant changes in T1 were observed up to 5 h after injection of the contrast agent. Once the T1 contrast between tumor and peritumoral brain tissue had reached a saturation, the enhancement persisted for several hours to days. Therefore application of this contrast agent resulted in a sharp demarcation between glioma and peri-tumoral edema.
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Affiliation(s)
- M Hoehn-Berlage
- Max-Planck-Institut für neurologische Forschung, Abteilung für experimentelle Neurologie, Köln, Germany
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Place DA, Faustino PJ, Berghmans KK, van Zijl PC, Chesnick AS, Cohen JS. MRI contrast-dose relationship of manganese(III)tetra(4-sulfonatophenyl) porphyrin with human xenograft tumors in nude mice at 2.0 T. Magn Reson Imaging 1992; 10:919-28. [PMID: 1461089 DOI: 10.1016/0730-725x(92)90446-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Previously we reported that Mn(III)tetra(4-sulfonatophenyl) porphyrin, MnTPPS4, is a contrast agent which can effectively enhance tumor detection by MRI. By imaging 30 additional athymic nude mice bearing subcutaneous MCF-7 WT human breast carcinoma xenografts, we have extended dose-contrast relationships over a wide range of intraperitoneal (IP) doses ranging from 0.025 to 0.50 mmol/kg. The benefits of IP injection are higher possible doses on a volume basis and a reduction in toxicity versus IV administration. Full coronal cross-section images have been obtained on a 2-T spectrometer. Although individual tumor masses displayed different distribution patterns, reflective of their internal morphology, single doses of 0.10 mmol/kg or greater were necessary to produce a detectable effect. At a dose of 0.50 mmol/kg, marked enhancement was produced. Multiple small dosages administered over the course of several days before imaging did not produce increased enhancement. Preliminary results on the new porphyrin derivative, MnTPPS3, indicate that the ratio of the toxic dose to the effective dose may be adjustable to render this class of agents clinically useful.
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Affiliation(s)
- D A Place
- Department of Pharmacology, Georgetown University Medical Center, Rockville, MD 20850
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Musser DA, Fiel RJ. Cutaneous photosensitizing and immunosuppressive effects of a series of tumor localizing porphyrins. Photochem Photobiol 1991; 53:119-23. [PMID: 2027901 DOI: 10.1111/j.1751-1097.1991.tb08476.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A series of tumor localizing porphyrins was evaluated with respect to their ability to elicit cutaneous photosensitivity and systemic immunosuppression, two of the most common side effects associated with photodynamic therapy. Using the murine ear swelling response as an indicator, it was found that all the non-metalloporphyrins caused cutaneous photosensitization. Immunosuppressive effects were noted using hematoporphyrin derivative (HPD) and meso-tetra(4-sulfonatophenyl)porphine if sensitization occurred immediately after photoirradiation, but none were evident using Photofrin II (PII) or meso-tetra(4-carboxyphenyl)porphine (TCPP). Subsequent studies indicated that PII and TCPP manifested a delayed type immunosuppression similar to that found following UVB photoirradiation. Manganese (III) meso-tetra(4-sulfonatophenyl)porphine, a prototype magnetic resonance imaging contrast agent, was also evaluated because of its reported demetallation in vivo. It was found to cause neither cutaneous photosensitivity nor immunosuppression.
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Affiliation(s)
- D A Musser
- Department of Dermatology, Roswell Park Cancer Institute, Buffalo, NY 14263
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Fiel RJ, Musser DA, Mark EH, Mazurchuk R, Alletto JJ. A comparative study of manganese meso-sulfonatophenyl porphyrins: contrast-enhancing agents for tumors. Magn Reson Imaging 1990; 8:255-9. [PMID: 2366638 DOI: 10.1016/0730-725x(90)90097-l] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Four manganese meso-sulfonatophenyl porphyrins were prepared, characterized and investigated for their potential as tumor-specific MRI contrast-enhancing agents in mice bearing subcutaneous implants of a mammary carcinoma (SMT-F). The trisulfonated tetraphenyl porphyrin, MnTPPS3 presented the most favorable profile: bio-distribution, tumor concentration and tumor relaxivity, when compared at 24 hr postinjection. Imaging experiments revealed that a time-dependent delineation of tumor morphology occurs in response to MnTPPS3 that appears to correlate with necrotic regions of the tumor.
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Affiliation(s)
- R J Fiel
- Department of Biophysics, Roswell Park Memorial Institute, Buffalo, New York 14263
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Bockhorst K, Höhn-Berlage M, Kocher M, Hossmann KA. Proton relaxation enhancement in experimental brain tumors--in vivo NMR study of manganese(III)TPPS in rat brain gliomas. Magn Reson Imaging 1990; 8:499-504. [PMID: 2392036 DOI: 10.1016/0730-725x(90)90058-a] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The effect of manganese(III)tetraphenylporphine sulfonate (MnTPPS) on the relaxation enhancement of NMR images (MRI) was studied in experimental brain tumors in rats. Brains were inoculated with the glioma cell line F98 12 to 19 days before the NMR experiment, and the effect of MnTPPS (0.25 mmol/kg body weight) was investigated 2 and 4 days after intraperitoneal injection. After MnTPPS addition tumors could be clearly distinguished by the brightness from the surrounding brain whereas they were barely visible without contrast enhancement. At SE time of 25 msec and TR time of 3500 msec the ratio of magnetization values of tumor versus normal grey matter increased from 0.98 +/- 0.08 to 1.24 +/- 0.09 (means +/- SD). When TR was shortened to 1100 msec contrast enhancement further increased to 1.77 +/- 0.25. These results demonstrate for the first time that MnTPPS is an efficient agent for contrast enhancement of brain tumors.
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Affiliation(s)
- K Bockhorst
- Max-Planck-Institut für neurologische Forschung, Abteilung für experimentelle Neurologie, Cologne, FRG
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