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Kortylewicz ZP, Coulter DW, Han G, Baranowska-Kortylewicz J. Norepinephrine-Transporter-Targeted and DNA-Co-Targeted Theranostic Guanidines. J Med Chem 2020; 63:2051-2073. [PMID: 31268317 DOI: 10.1021/acs.jmedchem.9b00437] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
High risk neuroblastoma often recurs, even with aggressive treatments. Clinical evidence suggests that proliferative activities are predictive of poor outcomes. This report describes syntheses, characterization, and biological properties of theranostic guanidines that target norepinephrine transporter and undergo intracellular processing, and subsequently their catabolites are efficiently incorporated into DNA of proliferating neuroblastoma cells. Radioactive guanidines are synthesized from 5-radioiodo-2'-deoxyuridine, a molecular radiotherapy platform with clinically proven minimal toxicities and DNA-targeting properties. The transport of radioactive guanidines into neuroblastoma cells is active as indicated by the competitive suppression of cellular uptake by meta-iodobenzylguanidine. The rate of intracellular processing and DNA uptake is influenced by the agent's catabolic stability and cell population doubling times. The radiotoxicity is directly proportional to DNA uptake and duration of exposure. Biodistribution of 5-[125I]iodo-3'-O-(ε-guanidinohexanoyl)-2'-deoxyuridine in a mouse neuroblastoma model shows significant tumor retention of radioactivity. Neuroblastoma xenografts regress in response to the clinically achievable doses of this agent.
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Affiliation(s)
- Zbigniew P Kortylewicz
- Department of Radiation Oncology, J. Bruce Henriksen Cancer Research Laboratories, University of Nebraska Medical Center, Omaha, Nebraska 68132-6850, United States
| | - Donald W Coulter
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, Nebraska 68132-2168, United States
| | - Guang Han
- Department of Radiation Oncology, J. Bruce Henriksen Cancer Research Laboratories, University of Nebraska Medical Center, Omaha, Nebraska 68132-6850, United States.,Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Janina Baranowska-Kortylewicz
- Department of Radiation Oncology, J. Bruce Henriksen Cancer Research Laboratories, University of Nebraska Medical Center, Omaha, Nebraska 68132-6850, United States
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Flöter VL, Bauersachs S, Fürst RW, Krebs S, Blum H, Reichenbach M, Ulbrich SE. Exposure of pregnant sows to low doses of estradiol-17β impacts on the transcriptome of the endometrium and the female preimplantation embryos†. Biol Reprod 2019; 100:624-640. [PMID: 30260370 DOI: 10.1093/biolre/ioy206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/30/2018] [Accepted: 09/25/2018] [Indexed: 11/14/2022] Open
Abstract
Maternal exposure to estrogens can induce long-term adverse effects in the offspring. The epigenetic programming may start as early as the period of preimplantation development. We analyzed the effects of gestational estradiol-17β (E2) exposure with two distinct low doses, corresponding to the acceptable daily intake "ADI" and close to the no-observed-effect level "NOEL", and a high dose (0.05, 10, and 1000 μg E2/kg body weight daily, respectively). The E2 doses were orally applied to sows from insemination until sampling at day 10 of pregnancy and compared to carrier-treated controls leading to a significant increase in E2 in plasma, bile and selected somatic tissues including the endometrium in the high-dose group. Conjugated and unconjugated E2 metabolites were as well elevated in the NOEL group. Although RNA-sequencing revealed a dose-dependent effect of 14, 17, and 27 differentially expressed genes (DEG) in the endometrium, single embryos were much more affected with 982 DEG in female blastocysts of the high-dose group, while none were present in the corresponding male embryos. Moreover, the NOEL treatment caused 62 and 3 DEG in female and male embryos, respectively. Thus, we detected a perturbed sex-specific gene expression profile leading to a leveling of the transcriptome profiles of female and male embryos. The preimplantation period therefore demonstrates a vulnerable time window for estrogen exposure, potentially constituting the cause for lasting consequences. The molecular fingerprint of low-dose estrogen exposure on developing embryos warrants a careful revisit of effect level thresholds.
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Affiliation(s)
- Veronika L Flöter
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland.,Physiology Weihenstephan, Technische Universität München, Freising, Germany
| | - Stefan Bauersachs
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland
| | - Rainer W Fürst
- Physiology Weihenstephan, Technische Universität München, Freising, Germany
| | - Stefan Krebs
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center of the Ludwig-Maximilians-Universität (LMU) München, Munich, Germany
| | - Helmut Blum
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center of the Ludwig-Maximilians-Universität (LMU) München, Munich, Germany
| | - Myriam Reichenbach
- Chair for Molecular Animal Breeding and Biotechnology, Gene Center of the Ludwig-Maximilians-Universität (LMU) München, Munich, Germany
| | - Susanne E Ulbrich
- ETH Zurich, Animal Physiology, Institute of Agricultural Sciences, Zurich, Switzerland.,Physiology Weihenstephan, Technische Universität München, Freising, Germany
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Karniychuk UU, Van Breedam W, Van Roy N, Rogel-Gaillard C, Nauwynck HJ. Demonstration of microchimerism in pregnant sows and effects of congenital PRRSV infection. Vet Res 2012; 43:19. [PMID: 22423651 PMCID: PMC3368719 DOI: 10.1186/1297-9716-43-19] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Accepted: 03/16/2012] [Indexed: 11/16/2022] Open
Abstract
The presence of foreign cells within the tissue/circulation of an individual is described as microchimerism. The main purpose of the present investigation was to study if microchimerism occurs in healthy sows/fetuses and if porcine reproductive and respiratory syndrome virus (PRRSV) infection influences this phenomenon. Six dams were inoculated intranasally with PRRSV and three non-inoculated dams served as controls. Male DNA was detected in female fetal sera of all dams via PCR. Male DNA was also detected in the maternal circulation. Sex-typing FISH showed the presence of male cells in the female fetal organs and vice versa. PRRSV infection did not influence microchimerism, but might misuse maternal and sibling microchimeric cells to enter fetuses.
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Affiliation(s)
- Uladzimir U Karniychuk
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium.
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Dittrich R, Sinduwinatha C, Maltaris T, Mueller A, Hoffmann I, Beckmann MW, Oppelt PG. The intrauterine to intra-arterial pressure ratio: a new parameter for the study of uterine contractility physiology. Reprod Biomed Online 2009; 20:430-6. [PMID: 20093083 DOI: 10.1016/j.rbmo.2009.11.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2009] [Revised: 06/23/2009] [Accepted: 11/17/2009] [Indexed: 10/20/2022]
Abstract
The objective of the study was to examine the uterine contractions and the arterial perfusion pressure changes after application of oxytocin, endothelin 1, prostaglandins PGE(1), PGE(2) and PGF(2alpha), in order to identify the substance with the greatest intrauterine pressure (IUP)/intra-arterial pressure (IAP) ratio, which means the substance most suitable for inducing uterine contractility without raising the systemic vascular pressure. Increasing doses of oxytocin, endothelin 1, PGE(1), PGE(2) and PGF(2alpha) were applied as bolus injection through the uterine artery of perfused swine uteri and the intrauterine and intra-arterial pressure rises were recorded. All substances showed a significant cervicofundic pressure gradient and, with the exception of PGF(2alpha), the uterine peristalsis moved towards the cervix uteri. The perfusion pressure after application of oxytocin, PGE(1), PGE(2) and PGF(2alpha) reached a maximum value and started to decrease, whereas endothelin 1 caused a continuous increase in the perfusion pressure. Endothelin 1 showed the lowest IUP/IAP ratio and oxytocin the greatest. In conclusion, the IUP/IAP ratio provides a promising new parameter for the study of uterine contractility physiology. Besides oxytocin, PGE(2) and PGF(2alpha) emerged as the best candidate substances to improve uterine contractility without raising the intra-arterial pressure.
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Affiliation(s)
- R Dittrich
- University Hospital Erlangen, Department of Obstetrics and Gynecology, University of Erlangen-Nuremberg, Universitaetsstrasse 21-23, D-91054 Erlangen, Germany.
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Maltaris T, Dragonas C, Hoffmann I, Mueller A, Schild RL, Schmidt W, Beckmann MW, Dittrich R. The extracorporeal perfusion of the swine uterus as an experimental model: The effect of tocolytic drugs. Eur J Obstet Gynecol Reprod Biol 2006; 126:56-62. [PMID: 16202502 DOI: 10.1016/j.ejogrb.2005.07.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2004] [Revised: 04/18/2005] [Accepted: 07/26/2005] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Comparison of the effect of tocolytic drugs on isolated swine uterus preparations. STUDY DESIGN Forty swine uteri were perfused with the aim to preserve a viable organ, which should be responsive to oxytocic hormones and tocolytic pharmaca. An intrauterine catheter recorded the pressure changes. After initiation of rhythmical uterine contractions we administered known tocolytic drugs (fenoterol, ritodrine, terbutaline, propofol, acetylsalicylic acid, alcohol, atosiban, verapamil, and glyceryl trinitrate) in various concentrations. RESULTS Perfusate pH and lactate, partial oxygen and carbon dioxide tensions, and oxygen saturation in the perfusate showed good preservation of the organ for up to 8h. All substances showed a tocolytic effect on the swine uterus. The effect varied substantially with regard to the length of the contraction free intervals, which was our main effect parameter. Fenoterol, acetylsalicylic acid, and alcohol showed the most and glyceryl trinitrate the least powerful effect. CONCLUSIONS A direct comparison of various tocolytic substances in the same experimental model showed the best effect for fenoterol. Furthermore, we could demonstrate that the swine uterus perfusion system is a suitable model to study the influence of various conditions like the administration of drugs or the induction of oxidative stress on the uterus function.
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Affiliation(s)
- Theodoros Maltaris
- University of Erlangen-Nuremberg, Department of Obstetrics and Gynecology, Universitätsstr. 21/23, D-91054 Erlangen, Germany
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Maltaris T, Scalera F, Schlembach D, Hoffmann I, Mueller A, Binder H, Goecke T, Hothorn T, Schild RL, Beckmann MW, Dittrich R. Increased uterine arterial pressure and contractility of perfused swine uterus after treatment with serum from pre-eclamptic women and endothelin-1. Clin Sci (Lond) 2005; 109:209-15. [PMID: 15859943 DOI: 10.1042/cs20040340] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The present study was designed to examine the effects of ET-1 (endothelin-1) and serum from PE (pre-eclamptic), HP (healthy pregnant) and HNP (healthy non-pregnant) women on uterine arterial perfusion pressure and uterine contractility. Swine uteri (n=25) were perfused for a period of up to 11 h, with the aim being to preserve a viable organ. Various concentrations of ET-1 as well as serum from PE, HP and HNP women (n=10 per group) were administered to the perfused swine uteri and IUP (intrauterine pressure) and IAP (intra-arterial pressure) were recorded. ET-1 produced dose-dependent increases in IUP and IAP. The ET-1 concentration in serum was higher in serum from PE women than in HP and HNP women (P>0.05). Administration of all serum samples had a contractile effect on the swine uterus, with the greatest effect being seen in HNP women (12.8±5.3 mmHg), followed by PE (9.06±4.2 mmHg) and HP (6.1±4.1 mmHg) women. Statistically significant differences were observed between HNP and PE women (P=0.048), and PE and HP women (P=0.021). Increases in IAP following administration of serum from PE women (48.8±20.0 mmHg) were significantly higher (P=0.024) compared with the effect of serum from HP women (28.4±13.7 mmHg). In conclusion, the findings show that serum from PE women has significant vasoconstrictive and oxytocic effects compared with serum from HP women. In pre-eclampsia, the balance between vasorelaxing and vasoactive substances is disturbed.
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Affiliation(s)
- Theodoros Maltaris
- Department of Obstetrics and Gynaecology, University of Erlangen-Nuremberg, Germany
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Baranowska-Kortylewicz J, Dalrymple GV, Harrison KA, Holdeman KP, Sharp JG, Cohen SM, Lieberman RP, Schneiderman MH, Clausen SR, Hoffman D, Lai J, Schneiderman GS, Helseth L. On the safety of 5-[125I]iodo-2'-deoxyuridine--Preclinical evaluation in swine. Acta Oncol 1996; 35:925-33. [PMID: 9004773 DOI: 10.3109/02841869609104047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
To increase tumor incorporation and minimize hepatic degradation of radio-IUdR, compartmental administration routes are being considered as an alternative to intravenous (i.v.) injections. Although there are significant data on the biodistribution and some reports on radiotoxicity of i.v.-administered 125IUdR, similar results for other routes of delivery are not available. We have undertaken a series of experiments intended to examine radiation effects of 125IUdR after intravesical (3 swine; eight 3 mCi doses at 4-day intervals), intracarotid (3 swine; two 10 mCi doses at 2-week intervals), and intra-aortic (5 swine, single dose of 10 mCi) administration in a swine model. Liver, renal functions, and complete blood counts were monitored throughout the duration of the experiment. Pharmacokinetics, systemic distribution of radioactivity and metabolites were measured. The normal tissue 125IUdR uptake and histology were determined after necropsy. No adverse systemic effects were identified. Clinical observations, laboratory data, and necropsy results were within normal range.
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Affiliation(s)
- J Baranowska-Kortylewicz
- Department of Radiology (Nuclear Medicine), J. Bruce Henriksen Laboratories, Omaha, Nebraska 68198-1045, USA.
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