Ignjatović, Đurđica S.

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orcid::0000-0003-3750-1303
  • Ignjatović, Đurđica S. (5)
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Author's Bibliography

Investigation of key interactions between the second extracellular loop of the dopamine D2 receptor and several hydroxy-N-{[2-(4-phenylpiperazin-1-yl)ethyl]phenyl}nicotinamides

Šukalović, Vladimir; Šoškić, Vukić; Ignjatović, Đurđica S.; Andrić, Deana; Penjišević, Jelena; Kostić Rajačić, Slađana

(Serbian Chemical Soc, Belgrade, 2014)

TY  - JOUR
AU  - Šukalović, Vladimir
AU  - Šoškić, Vukić
AU  - Ignjatović, Đurđica S.
AU  - Andrić, Deana
AU  - Penjišević, Jelena
AU  - Kostić Rajačić, Slađana
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1488
AB  - The dopaminergic receptor system has been the focus for the development of new pharmacotherapeutic agents targeting a number of central nervous system related disorders, such as drug addiction, schizophrenia, depression, and Parkinson's disease, to name just a few. To date, the crystal structure for the human D2 receptor is not known, despite its vital function and importance as a therapeutic target. Herein, a recent advancement in the determination of key receptor ligand interactions for the available arylpiperazine-like ligands, using a D2 receptor model based on the crystal structure of the D3 receptor is presented. To determine key interactions responsible for high dopaminergic activity, computer-docking analysis was used together with experimental data. A total of 4 dopaminergic ligands showing moderate to high affinity were tested and the obtained results rationalized using ligand structures docked into the proposed D2 receptor model.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Investigation of key interactions between the second extracellular loop of the dopamine D2 receptor and several hydroxy-N-{[2-(4-phenylpiperazin-1-yl)ethyl]phenyl}nicotinamides
VL  - 79
IS  - 12
SP  - 1461
EP  - 1467
DO  - 10.2298/JSC140423070S
ER  - 
@article{
author = "Šukalović, Vladimir and Šoškić, Vukić and Ignjatović, Đurđica S. and Andrić, Deana and Penjišević, Jelena and Kostić Rajačić, Slađana",
year = "2014",
abstract = "The dopaminergic receptor system has been the focus for the development of new pharmacotherapeutic agents targeting a number of central nervous system related disorders, such as drug addiction, schizophrenia, depression, and Parkinson's disease, to name just a few. To date, the crystal structure for the human D2 receptor is not known, despite its vital function and importance as a therapeutic target. Herein, a recent advancement in the determination of key receptor ligand interactions for the available arylpiperazine-like ligands, using a D2 receptor model based on the crystal structure of the D3 receptor is presented. To determine key interactions responsible for high dopaminergic activity, computer-docking analysis was used together with experimental data. A total of 4 dopaminergic ligands showing moderate to high affinity were tested and the obtained results rationalized using ligand structures docked into the proposed D2 receptor model.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Investigation of key interactions between the second extracellular loop of the dopamine D2 receptor and several hydroxy-N-{[2-(4-phenylpiperazin-1-yl)ethyl]phenyl}nicotinamides",
volume = "79",
number = "12",
pages = "1461-1467",
doi = "10.2298/JSC140423070S"
}
Šukalović, V., Šoškić, V., Ignjatović, Đ. S., Andrić, D., Penjišević, J.,& Kostić Rajačić, S.. (2014). Investigation of key interactions between the second extracellular loop of the dopamine D2 receptor and several hydroxy-N-{[2-(4-phenylpiperazin-1-yl)ethyl]phenyl}nicotinamides. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 79(12), 1461-1467.
https://doi.org/10.2298/JSC140423070S
Šukalović V, Šoškić V, Ignjatović ĐS, Andrić D, Penjišević J, Kostić Rajačić S. Investigation of key interactions between the second extracellular loop of the dopamine D2 receptor and several hydroxy-N-{[2-(4-phenylpiperazin-1-yl)ethyl]phenyl}nicotinamides. in Journal of the Serbian Chemical Society. 2014;79(12):1461-1467.
doi:10.2298/JSC140423070S .
Šukalović, Vladimir, Šoškić, Vukić, Ignjatović, Đurđica S., Andrić, Deana, Penjišević, Jelena, Kostić Rajačić, Slađana, "Investigation of key interactions between the second extracellular loop of the dopamine D2 receptor and several hydroxy-N-{[2-(4-phenylpiperazin-1-yl)ethyl]phenyl}nicotinamides" in Journal of the Serbian Chemical Society, 79, no. 12 (2014):1461-1467,
https://doi.org/10.2298/JSC140423070S . .

N-{[2-(4-Phenyl-piperazin-1-yl)-ethyl]-phenyl}-arylamides with Dopamine D-2 and 5-Hydroxytryptamine 5HT(1A) Activity: Synthesis, Testing, and Molecular Modeling

Šukalović, Vladimir; Bogdan, Anca Elena; Tovilović, Gordana; Ignjatović, Đurđica S.; Andrić, Deana; Kostić Rajačić, Slađana; Šoškić, Vukić

(Wiley-V C H Verlag Gmbh, Weinheim, 2013)

TY  - JOUR
AU  - Šukalović, Vladimir
AU  - Bogdan, Anca Elena
AU  - Tovilović, Gordana
AU  - Ignjatović, Đurđica S.
AU  - Andrić, Deana
AU  - Kostić Rajačić, Slađana
AU  - Šoškić, Vukić
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1193
AB  - The ratio of affinities toward the dopamine D-2 and the 5-hydroxytryptamine 5-HT1A receptors is one of the important parameters that determine the efficiency of antipsychotic drugs. Here, we present the synthesis of ortho-, meta-, and para-N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-arylamides and their structure-activity relationship studies on dopamine D-2 and 5-hydroxytryptamine 5-HT1A receptors. It was shown that the biological activity of the described ligands strongly depends on their topology as well as on the nature of the heteroaryl group in the head of the molecules. Docking simulations together with conformational analysis revealed a rational explanation for the ligands' behavior. The molecular model of receptor-ligand interactions described herein provided us with a tool for the rational design of new compounds with a favorable D-2/5-HT1A profile.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Archiv der Pharmazie
T1  - N-{[2-(4-Phenyl-piperazin-1-yl)-ethyl]-phenyl}-arylamides with Dopamine D-2 and 5-Hydroxytryptamine 5HT(1A) Activity: Synthesis, Testing, and Molecular Modeling
VL  - 346
IS  - 10
SP  - 708
EP  - 717
DO  - 10.1002/ardp.201300189
ER  - 
@article{
author = "Šukalović, Vladimir and Bogdan, Anca Elena and Tovilović, Gordana and Ignjatović, Đurđica S. and Andrić, Deana and Kostić Rajačić, Slađana and Šoškić, Vukić",
year = "2013",
abstract = "The ratio of affinities toward the dopamine D-2 and the 5-hydroxytryptamine 5-HT1A receptors is one of the important parameters that determine the efficiency of antipsychotic drugs. Here, we present the synthesis of ortho-, meta-, and para-N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-arylamides and their structure-activity relationship studies on dopamine D-2 and 5-hydroxytryptamine 5-HT1A receptors. It was shown that the biological activity of the described ligands strongly depends on their topology as well as on the nature of the heteroaryl group in the head of the molecules. Docking simulations together with conformational analysis revealed a rational explanation for the ligands' behavior. The molecular model of receptor-ligand interactions described herein provided us with a tool for the rational design of new compounds with a favorable D-2/5-HT1A profile.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Archiv der Pharmazie",
title = "N-{[2-(4-Phenyl-piperazin-1-yl)-ethyl]-phenyl}-arylamides with Dopamine D-2 and 5-Hydroxytryptamine 5HT(1A) Activity: Synthesis, Testing, and Molecular Modeling",
volume = "346",
number = "10",
pages = "708-717",
doi = "10.1002/ardp.201300189"
}
Šukalović, V., Bogdan, A. E., Tovilović, G., Ignjatović, Đ. S., Andrić, D., Kostić Rajačić, S.,& Šoškić, V.. (2013). N-{[2-(4-Phenyl-piperazin-1-yl)-ethyl]-phenyl}-arylamides with Dopamine D-2 and 5-Hydroxytryptamine 5HT(1A) Activity: Synthesis, Testing, and Molecular Modeling. in Archiv der Pharmazie
Wiley-V C H Verlag Gmbh, Weinheim., 346(10), 708-717.
https://doi.org/10.1002/ardp.201300189
Šukalović V, Bogdan AE, Tovilović G, Ignjatović ĐS, Andrić D, Kostić Rajačić S, Šoškić V. N-{[2-(4-Phenyl-piperazin-1-yl)-ethyl]-phenyl}-arylamides with Dopamine D-2 and 5-Hydroxytryptamine 5HT(1A) Activity: Synthesis, Testing, and Molecular Modeling. in Archiv der Pharmazie. 2013;346(10):708-717.
doi:10.1002/ardp.201300189 .
Šukalović, Vladimir, Bogdan, Anca Elena, Tovilović, Gordana, Ignjatović, Đurđica S., Andrić, Deana, Kostić Rajačić, Slađana, Šoškić, Vukić, "N-{[2-(4-Phenyl-piperazin-1-yl)-ethyl]-phenyl}-arylamides with Dopamine D-2 and 5-Hydroxytryptamine 5HT(1A) Activity: Synthesis, Testing, and Molecular Modeling" in Archiv der Pharmazie, 346, no. 10 (2013):708-717,
https://doi.org/10.1002/ardp.201300189 . .
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The mechanisms responsible for neuroprotective capacity of arylpiperazine dopaminergic ligands against cell death induced by sodium nitroprusside

Ignjatović, Đurđica S.; Milutinovic, Danijela Vojnovic; Nikolić-Kokić, Aleksandra; Slavic, Marija; Andrić, Deana; Tomić, Mirko; Kostić Rajačić, Slađana

(Elsevier, 2012)

TY  - JOUR
AU  - Ignjatović, Đurđica S.
AU  - Milutinovic, Danijela Vojnovic
AU  - Nikolić-Kokić, Aleksandra
AU  - Slavic, Marija
AU  - Andrić, Deana
AU  - Tomić, Mirko
AU  - Kostić Rajačić, Slađana
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/955
AB  - A group of sixteen arylpiperazines had been previously synthesized and evaluated for atypical antipsychotic activity. Here we examined these compounds for their neuroprotective capacity. The affinity and agonist/antagonist action of the arylpiperazines at dopamine hD(2S) receptors were determined in vitro on membranes from stably transfected CHO-hD(2S) cell line. The assays for cell viability and antioxidative capacity (total glutathione and total superoxide dismutase activity), amount of nitric oxide and superoxide radicals, as well as influence on prosurvival pathways (Akt and ERK), were performed on the human neuroblastoma cell line SH-SY5Y. Cell death was induced by oxidative or nitrosative stress, or by growing cells in the medium deprived of serum. Only four of the arylpiperazines exhibited notable neuroprotection against cell death induced by sodium nitroprusside. Two of these arylpiperazines induced elevations of pAkt, while two other compounds reduced the levels of pErk, whereas these actions are considered to support the cell survival. The benzimidazole heteroaryl-group, that mimics catechol moiety of the dopamine molecule, might be the prerequisite structure for the neuroprotective action of these ligands. It is postulated that neuroprotection was acquired also by elevation of endogenous glutathione or total superoxide dismutase activity.
PB  - Elsevier
T2  - European Journal of Pharmacology
T1  - The mechanisms responsible for neuroprotective capacity of arylpiperazine dopaminergic ligands against cell death induced by sodium nitroprusside
VL  - 683
IS  - 1-3
SP  - 93
EP  - 100
DO  - 10.1016/j.ejphar.2012.03.011
ER  - 
@article{
author = "Ignjatović, Đurđica S. and Milutinovic, Danijela Vojnovic and Nikolić-Kokić, Aleksandra and Slavic, Marija and Andrić, Deana and Tomić, Mirko and Kostić Rajačić, Slađana",
year = "2012",
abstract = "A group of sixteen arylpiperazines had been previously synthesized and evaluated for atypical antipsychotic activity. Here we examined these compounds for their neuroprotective capacity. The affinity and agonist/antagonist action of the arylpiperazines at dopamine hD(2S) receptors were determined in vitro on membranes from stably transfected CHO-hD(2S) cell line. The assays for cell viability and antioxidative capacity (total glutathione and total superoxide dismutase activity), amount of nitric oxide and superoxide radicals, as well as influence on prosurvival pathways (Akt and ERK), were performed on the human neuroblastoma cell line SH-SY5Y. Cell death was induced by oxidative or nitrosative stress, or by growing cells in the medium deprived of serum. Only four of the arylpiperazines exhibited notable neuroprotection against cell death induced by sodium nitroprusside. Two of these arylpiperazines induced elevations of pAkt, while two other compounds reduced the levels of pErk, whereas these actions are considered to support the cell survival. The benzimidazole heteroaryl-group, that mimics catechol moiety of the dopamine molecule, might be the prerequisite structure for the neuroprotective action of these ligands. It is postulated that neuroprotection was acquired also by elevation of endogenous glutathione or total superoxide dismutase activity.",
publisher = "Elsevier",
journal = "European Journal of Pharmacology",
title = "The mechanisms responsible for neuroprotective capacity of arylpiperazine dopaminergic ligands against cell death induced by sodium nitroprusside",
volume = "683",
number = "1-3",
pages = "93-100",
doi = "10.1016/j.ejphar.2012.03.011"
}
Ignjatović, Đ. S., Milutinovic, D. V., Nikolić-Kokić, A., Slavic, M., Andrić, D., Tomić, M.,& Kostić Rajačić, S.. (2012). The mechanisms responsible for neuroprotective capacity of arylpiperazine dopaminergic ligands against cell death induced by sodium nitroprusside. in European Journal of Pharmacology
Elsevier., 683(1-3), 93-100.
https://doi.org/10.1016/j.ejphar.2012.03.011
Ignjatović ĐS, Milutinovic DV, Nikolić-Kokić A, Slavic M, Andrić D, Tomić M, Kostić Rajačić S. The mechanisms responsible for neuroprotective capacity of arylpiperazine dopaminergic ligands against cell death induced by sodium nitroprusside. in European Journal of Pharmacology. 2012;683(1-3):93-100.
doi:10.1016/j.ejphar.2012.03.011 .
Ignjatović, Đurđica S., Milutinovic, Danijela Vojnovic, Nikolić-Kokić, Aleksandra, Slavic, Marija, Andrić, Deana, Tomić, Mirko, Kostić Rajačić, Slađana, "The mechanisms responsible for neuroprotective capacity of arylpiperazine dopaminergic ligands against cell death induced by sodium nitroprusside" in European Journal of Pharmacology, 683, no. 1-3 (2012):93-100,
https://doi.org/10.1016/j.ejphar.2012.03.011 . .
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Interactions of N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-2-aryl-2-yl-acetamides and 1-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-3-aryl-2-yl-ureas with dopamine D-2 and 5-hydroxytryptamine 5HT(1A) receptors

Šukalović, Vladimir; Ignjatović, Đurđica S.; Tovilović, Gordana; Andrić, Deana; Shakib, Kaveh; Kostić Rajačić, Slađana; Šoškić, Vukić

(Oxford : Pergamon-Elsevier Science Ltd, 2012)

TY  - JOUR
AU  - Šukalović, Vladimir
AU  - Ignjatović, Đurđica S.
AU  - Tovilović, Gordana
AU  - Andrić, Deana
AU  - Shakib, Kaveh
AU  - Kostić Rajačić, Slađana
AU  - Šoškić, Vukić
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/974
AB  - It is suggested that the ratio of dopamine D-2 to 5-hydroxytryptamine 5-HT1A activity is an important parameter that determines the efficiency of antipsychotic drugs. Here we present the synthesis of N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-2-aryl-2-yl-acetamides and 1-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-3-aryl-2-yl-ureas and their structure-activity relationship studies on dopamine D-2 and 5-hydrohytryptamine 5-HT1A receptors. It was shown that ligand selectivity and affinity strongly depends on their topology and the presence of a pyridyl group in the head of molecules. Molecular modeling studies using homology modeling and docking simulation revealed a rational explanation for the ligand behavior. The observed binding modes and receptor-ligand interactions provided us with a clue for optimizing the optimal selectivity towards 5-HT1A receptors.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Bioorganic and Medicinal Chemistry Letters
T1  - Interactions of N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-2-aryl-2-yl-acetamides and 1-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-3-aryl-2-yl-ureas with dopamine D-2 and 5-hydroxytryptamine 5HT(1A) receptors
VL  - 22
IS  - 12
SP  - 3967
EP  - 3972
DO  - 10.1016/j.bmcl.2012.04.098
ER  - 
@article{
author = "Šukalović, Vladimir and Ignjatović, Đurđica S. and Tovilović, Gordana and Andrić, Deana and Shakib, Kaveh and Kostić Rajačić, Slađana and Šoškić, Vukić",
year = "2012",
abstract = "It is suggested that the ratio of dopamine D-2 to 5-hydroxytryptamine 5-HT1A activity is an important parameter that determines the efficiency of antipsychotic drugs. Here we present the synthesis of N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-2-aryl-2-yl-acetamides and 1-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-3-aryl-2-yl-ureas and their structure-activity relationship studies on dopamine D-2 and 5-hydrohytryptamine 5-HT1A receptors. It was shown that ligand selectivity and affinity strongly depends on their topology and the presence of a pyridyl group in the head of molecules. Molecular modeling studies using homology modeling and docking simulation revealed a rational explanation for the ligand behavior. The observed binding modes and receptor-ligand interactions provided us with a clue for optimizing the optimal selectivity towards 5-HT1A receptors.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Bioorganic and Medicinal Chemistry Letters",
title = "Interactions of N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-2-aryl-2-yl-acetamides and 1-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-3-aryl-2-yl-ureas with dopamine D-2 and 5-hydroxytryptamine 5HT(1A) receptors",
volume = "22",
number = "12",
pages = "3967-3972",
doi = "10.1016/j.bmcl.2012.04.098"
}
Šukalović, V., Ignjatović, Đ. S., Tovilović, G., Andrić, D., Shakib, K., Kostić Rajačić, S.,& Šoškić, V.. (2012). Interactions of N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-2-aryl-2-yl-acetamides and 1-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-3-aryl-2-yl-ureas with dopamine D-2 and 5-hydroxytryptamine 5HT(1A) receptors. in Bioorganic and Medicinal Chemistry Letters
Oxford : Pergamon-Elsevier Science Ltd., 22(12), 3967-3972.
https://doi.org/10.1016/j.bmcl.2012.04.098
Šukalović V, Ignjatović ĐS, Tovilović G, Andrić D, Shakib K, Kostić Rajačić S, Šoškić V. Interactions of N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-2-aryl-2-yl-acetamides and 1-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-3-aryl-2-yl-ureas with dopamine D-2 and 5-hydroxytryptamine 5HT(1A) receptors. in Bioorganic and Medicinal Chemistry Letters. 2012;22(12):3967-3972.
doi:10.1016/j.bmcl.2012.04.098 .
Šukalović, Vladimir, Ignjatović, Đurđica S., Tovilović, Gordana, Andrić, Deana, Shakib, Kaveh, Kostić Rajačić, Slađana, Šoškić, Vukić, "Interactions of N-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-2-aryl-2-yl-acetamides and 1-{[2-(4-phenyl-piperazin-1-yl)-ethyl]-phenyl}-3-aryl-2-yl-ureas with dopamine D-2 and 5-hydroxytryptamine 5HT(1A) receptors" in Bioorganic and Medicinal Chemistry Letters, 22, no. 12 (2012):3967-3972,
https://doi.org/10.1016/j.bmcl.2012.04.098 . .
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Interaction of different third intracellular loop fragments of human dopamine d2l receptor with a-subunit of gi1 protein - prospective therapeutic application

Ignjatović, Đurđica S.; Šukalović, Vladimir; Tasić, Bosiljka; Kostić Rajačić, Slađana; Šoškić, Vukić

(2002)

TY  - JOUR
AU  - Ignjatović, Đurđica S.
AU  - Šukalović, Vladimir
AU  - Tasić, Bosiljka
AU  - Kostić Rajačić, Slađana
AU  - Šoškić, Vukić
PY  - 2002
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/73
AB  - In order to find the essential structural motif of the D2L dopamine receptor necessary for the interaction with a-subunit of Gi1 protein, four fragments of the third cytoplasmic loop (CPL3) of this receptor were cloned, expressed in E. coli and purified. After that, fusion proteins with glutathione-S-transferase (GST) were prepared and the interactions quantified by a colorimetric assay for GST activity determination. The presence of D2L-CPL3 fragment-Gia1 complexes was detected by SDS-polyacrylamide gel electrophoresis (PAGE). Kd values for the interaction of the three fragments with Gia1 were similar and in nmol/L range of concentrations, while the peptide representing the insert in the long form of the dopamine D2 receptor expressed about 10-fold lower binding affinity. These results could serve to design new therapeutic agents that might act at the level of receptor/G protein interaction rather than at the level of ligand-receptor binding.
AB  - U cilju pronalaženja bitnih strukturnih motiva potrebnih za interakciju sa a podjedinicom Gi1 proteina klonirana su, eksprimirana i prečišćena 4 fragmenta treće citoplazmatične petlje (CPL3) dopaminskog D2L receptora koji su dalje pripremljeni kao fuzioni proteini sa glutation-S-transferazom (GST). Interakcije su kvantifikovane bojenom reakcijom za određivanje aktivnosti GST. Postojanje kompleksa D2L-CPL3 fragment- Gia1 je dokazano elektroforetskom analizom na SDS-poliakrilamidnom gelu (PAGE). Kd vrednosti za tri fragmenta su bile vrlo slične i u nmol/L opsegu koncentracija, dok je peptid koji predstavlja insert u dugom obliku dopaminskog D2 receptora posedovao oko 10 puta manji afinitet vezivanja za Gia1. Ovi rezultati mogu biti osnova za sintezu novih terapeutskih agenasa koji bi delovali na nivou interakcije receptora i G proteina umesto na nivou vezivanja liganda za receptor.
T2  - Jugoslovenska medicinska biohemija
T1  - Interaction of different third intracellular loop fragments of human dopamine d2l receptor with a-subunit of gi1 protein - prospective therapeutic application
T1  - Interakcija različitih fragmenata treće citoplazmatične petlje dopaminskog d2l receptora čoveka sa a-podjedinicom gi1 proteina - moguća terapeutska primena
VL  - 21
IS  - 1
SP  - 9
EP  - 14
DO  - 10.2298/JMH0201009I
ER  - 
@article{
author = "Ignjatović, Đurđica S. and Šukalović, Vladimir and Tasić, Bosiljka and Kostić Rajačić, Slađana and Šoškić, Vukić",
year = "2002",
abstract = "In order to find the essential structural motif of the D2L dopamine receptor necessary for the interaction with a-subunit of Gi1 protein, four fragments of the third cytoplasmic loop (CPL3) of this receptor were cloned, expressed in E. coli and purified. After that, fusion proteins with glutathione-S-transferase (GST) were prepared and the interactions quantified by a colorimetric assay for GST activity determination. The presence of D2L-CPL3 fragment-Gia1 complexes was detected by SDS-polyacrylamide gel electrophoresis (PAGE). Kd values for the interaction of the three fragments with Gia1 were similar and in nmol/L range of concentrations, while the peptide representing the insert in the long form of the dopamine D2 receptor expressed about 10-fold lower binding affinity. These results could serve to design new therapeutic agents that might act at the level of receptor/G protein interaction rather than at the level of ligand-receptor binding., U cilju pronalaženja bitnih strukturnih motiva potrebnih za interakciju sa a podjedinicom Gi1 proteina klonirana su, eksprimirana i prečišćena 4 fragmenta treće citoplazmatične petlje (CPL3) dopaminskog D2L receptora koji su dalje pripremljeni kao fuzioni proteini sa glutation-S-transferazom (GST). Interakcije su kvantifikovane bojenom reakcijom za određivanje aktivnosti GST. Postojanje kompleksa D2L-CPL3 fragment- Gia1 je dokazano elektroforetskom analizom na SDS-poliakrilamidnom gelu (PAGE). Kd vrednosti za tri fragmenta su bile vrlo slične i u nmol/L opsegu koncentracija, dok je peptid koji predstavlja insert u dugom obliku dopaminskog D2 receptora posedovao oko 10 puta manji afinitet vezivanja za Gia1. Ovi rezultati mogu biti osnova za sintezu novih terapeutskih agenasa koji bi delovali na nivou interakcije receptora i G proteina umesto na nivou vezivanja liganda za receptor.",
journal = "Jugoslovenska medicinska biohemija",
title = "Interaction of different third intracellular loop fragments of human dopamine d2l receptor with a-subunit of gi1 protein - prospective therapeutic application, Interakcija različitih fragmenata treće citoplazmatične petlje dopaminskog d2l receptora čoveka sa a-podjedinicom gi1 proteina - moguća terapeutska primena",
volume = "21",
number = "1",
pages = "9-14",
doi = "10.2298/JMH0201009I"
}
Ignjatović, Đ. S., Šukalović, V., Tasić, B., Kostić Rajačić, S.,& Šoškić, V.. (2002). Interaction of different third intracellular loop fragments of human dopamine d2l receptor with a-subunit of gi1 protein - prospective therapeutic application. in Jugoslovenska medicinska biohemija, 21(1), 9-14.
https://doi.org/10.2298/JMH0201009I
Ignjatović ĐS, Šukalović V, Tasić B, Kostić Rajačić S, Šoškić V. Interaction of different third intracellular loop fragments of human dopamine d2l receptor with a-subunit of gi1 protein - prospective therapeutic application. in Jugoslovenska medicinska biohemija. 2002;21(1):9-14.
doi:10.2298/JMH0201009I .
Ignjatović, Đurđica S., Šukalović, Vladimir, Tasić, Bosiljka, Kostić Rajačić, Slađana, Šoškić, Vukić, "Interaction of different third intracellular loop fragments of human dopamine d2l receptor with a-subunit of gi1 protein - prospective therapeutic application" in Jugoslovenska medicinska biohemija, 21, no. 1 (2002):9-14,
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