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Beck MT, Bertóti I, Mohai M, Németh P, Jakab E, Szabó L, Szépvölgyi J. Gold nano-particle formation from crystalline AuCN: Comparison of thermal, plasma- and ion-beam activated decomposition. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2016.10.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- István Bányai
- a Department of Physical Chemistry , Lajos Kossuth University , H-4010 , Debrecen , HungaryPf. 7
| | - László Dózsa
- a Department of Physical Chemistry , Lajos Kossuth University , H-4010 , Debrecen , HungaryPf. 7
| | - Mihály T. Beck
- a Department of Physical Chemistry , Lajos Kossuth University , H-4010 , Debrecen , HungaryPf. 7
| | - Gyöngyi Gyémánt
- b Department of Biochemistry , Lajos Kossuth University , H-4010 , Debrecen , Hungary
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Beck MT, Nagy IP, Székely G. Oscillatory kinetics and mechanism of the chromate catalyzed decomposition of hydrogen peroxide. INT J CHEM KINET 2004. [DOI: 10.1002/kin.550231004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Affiliation(s)
- Sándor Kéki
- Department of Physical Chemistry, University of Debrecen, H-4010 Debrecen, Hungary
| | - Gabriella Székely
- Department of Physical Chemistry, University of Debrecen, H-4010 Debrecen, Hungary
| | - Mihály T. Beck
- Department of Physical Chemistry, University of Debrecen, H-4010 Debrecen, Hungary
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Abstract
Previously we demonstrated that a mutated human prolactin (hPRL) with a single amino acid substitution at position 129 (hPRL-G129R) was able to inhibit human breast cancer cell proliferation via the induction of apoptosis. In this study, we report the in vivo anti-tumor effects of hPRL-G129R in nude mice bearing human breast cancer xenografts (T-47D and MCF-7). In an effort to prolong the half-life of the proteins, hPRL or hPRL-G129R were formulated with either growth factor reduced Matrigel or into slow-releasing pellets (custom made 5 mg/5 day release). Initially, nude mice inoculated (s.c.) with T-47D human breast cancer cells were treated with either hPRL or hPRL-G129R formulated with Matrigel. At the end of the 7-week study, it was found that hPRL significantly stimulated the in vivo growth of T-47D xenografts (mean tumor volume, 202 +/- 62 mm(3) as compared to 124 +/- 31 mm(3) in control mice), whereas hPRL-G129R inhibited the tumor growth (mean tumor volume, 79+/-32 mm3). The inhibitory effects of hPRL-G129R were further confirmed in a second experiment using nude mice bearing MCF-7 human breast cancer xenografts and treated with slow-releasing pellets containing hPRL-G129R. Based on these results, we believe that hPRL-G129R can be used to improve the outcome of human breast cancer treatment in the near future.
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Affiliation(s)
- N Y Chen
- Oncology Research Institute, Cancer Center, Greenville Hospital System, Department of Microbiology and Molecular Medicine, Clemson University, Greenville, SC 29605, USA
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Abstract
PCR subtraction hybridization has been used effectively to enrich and single out differentially expressed genes. However identification of these genes by means of cloning and sequencing individual cDNAs is a tedious and lengthy process. In this report, an attempt has been made to combine the use of PCR select cDNA subtraction hybridization and cDNA microarrays to identify differentially expressed genes using a nonradioactive chemiluminescent detection method. mRNA from human prolactin (hPRL) or human prolactin antagonist (hPRL-G129R) treated and non-treated breast cancer cells was isolated, and cDNAs were synthesized and used for the PCR subtraction to enrich the differentially expressed genes in the treated cells. The PCR-amplified and subtracted cDNA pools were purified and labeled using the digoxigenin method. Labeled cDNAs were hybridized to a human apoptosis cDNA microarray membrane and identified by chemiluminescence. The results suggest that the strategy of combining all three methods will allow for a more efficient, nonradioactive way of identifying differentially expressed genes in target cells.
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Affiliation(s)
- István Z. Kiss
- Institute of Physical Chemistry, University of Debrecen, H-4010 Debrecen, P.O. Box 7, Hungary
| | - Géza Mándi
- Institute of Physical Chemistry, University of Debrecen, H-4010 Debrecen, P.O. Box 7, Hungary
| | - Mihály T. Beck
- Institute of Physical Chemistry, University of Debrecen, H-4010 Debrecen, P.O. Box 7, Hungary
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Dózsa L, Antal K, Beck MT. Inductive hydrogen formation in the oxidation of ascorbic acid by nitrosylpentacyanoferrate(II). ACTA ACUST UNITED AC 1992. [DOI: 10.1007/bf02070096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Antal K, Bányai I, Beck MT. On the effect of cyanide ion on the reaction of pentacyanonitrosylferrate(2–) with cysteine. ACTA ACUST UNITED AC 1985. [DOI: 10.1039/dt9850001191] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Beck MT, Kathó Á, Dózsa L. Formation of heterocyclic amino acids in the reaction of α,δ- and α,ϵ-diamino acids with nitrosylpentacyanoiron(II). Inorganica Chim Acta 1981. [DOI: 10.1016/s0020-1693(00)90767-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Pentacyanonitrosylferrate/II/ complex reacts under biological conditions (pH= 7.5, T= 25-40 degrees C, dilute solution) selectively with nucleobases. The reaction with adenine and guanine probably leads to nitrosation. A new compound formed in the reaction with adenine is prepared; both this compound and the pentacyanonitrosylferrate/II/ inhibits the multiplication of Escherichia coli.
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Beck MT, Bjerrum J, Nygård B, Block-Bolten A, Toguri JM, Flood H. On the Tendency of the Tetracyano Nickelate(II)Ion to Form Complexes. ACTA ACUST UNITED AC 1962. [DOI: 10.3891/acta.chem.scand.16-2050] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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