Bogdanović Pristov, Jelena

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  • Bogdanović Pristov, Jelena (3)
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Author's Bibliography

New aspects of synthetic tubulysin derivative, tubugi 1, action in murine melanoma model

Drača, Dijana; Mijatović, Sanja; Krajnović, Tamara; Bogdanović Pristov, Jelena; Đukić, Tatjana; Kaluđerović, Goran N.; Wessjohann, Ludger A.; Maksimović-Ivanić, Danijela

(Serbian Society for Immunology, Molecular Oncology and Regenerative Medicine, 2022)

TY  - CONF
AU  - Drača, Dijana
AU  - Mijatović, Sanja
AU  - Krajnović, Tamara
AU  - Bogdanović Pristov, Jelena
AU  - Đukić, Tatjana
AU  - Kaluđerović, Goran N.
AU  - Wessjohann, Ludger A.
AU  - Maksimović-Ivanić, Danijela
PY  - 2022
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5292
AB  - Tubulisins are natural peptide compounds isolated from mycobacterial genera.
They belong to the group of antimitotic agents, since they achieve their antitumor
effect disrupting the function of mitotic spindle. The object of this study was to investigate
anticancer potential of synthetic analogue of tubulysins, tubugi 1, on mouse
melanoma model, in vitro and in vivo. Tubugi 1 decreased dose-dependently viability
of B16 cells. The experimental compound induced atypical apoptosis without the externalization
of phosphatidylserines (PS). Although apoptosis was accompanied with
strong intracellular production of reactive oxygen and nitrogen species, decrease in
malonyldyaldehyde content showed that membrane lipids were not subjected to oxidation,
what is a prerequisite for the externalization of PS. Although PS plays a key
role in the removal of apoptotic cells, this did not affect the phagocytic activity of
macrophages in vitro, implying PS-independent apoptotic cells removal. The effect of
the experimental agent was confirmed in vivo. Мacrophages isolated from peritoneal
exudate of treated animals showed cytotoxic activity, what was in line with demonstrated
expression of M1 phenotype markers, as well as production of nitric oxide.
Additonally, the phagocytic activity of these cells was preserved. Having in mind lack
of data in the literature concerning the effects of this group of agents on components
of the innate immune system, tubugi 1 remains worthy of further research in the field
of experimental oncology.
AB  - Тубулизини су природна једињења изолована из родова миксобактерија.
Спадају у групу антимитотских агенаса будући да свој антитуморски ефекат
остварују на нивоу деобног вретена. У овој студији испитиван је антитумор-
ски потенцијал синтетског аналога тубулизина, тубуги 1, in vitro и in vivo на
моделу мишјег меланома. Тубуги 1 је на дозно-зависан начин смањио вијаби-
литет B16 ћелија. Експериментално једињење је у овим ћелијама индуковало
атипичну форму апоптотске ћелијске смрти без екстернализације фосфати-
дилсерина (ПС). Иако је апоптоза била праћена снажном продукцијом ре-
активних врста кисеоника и азота, смањење садржаја малонилдиалдехида је
показало да мембрански липиди нису подлегли оксидацији, што је предуслов
за екстернализацију ПС. Иако ПС има кључну улогу у уклањању апоптотских
ћелија, ово се није одразило на фагоцитну активност макрофага in vitro, ука-
зујући на фагоцитозу независну од ПС. Учинак експерименталног агенса је
потврђен in vivo. Макрофаги изоловани из перитонеалног ексудата третира-
них животиња показали су цитотоксичну активност, што је у сагласности са
показаном експресијом маркера М1 фенотипа и продукцијом азот моноксида.
Додатно, фагоцитна способност ових ћелија је била очувана. С обзиром на
недостатак података у литератури о деловању овакве групе агенаса на компо-
ненте урођеног имунског система, тубуги 1 остаје вредан даљих испитивања
на пољу експерименталне онкологије.
PB  - Serbian Society for Immunology, Molecular Oncology and Regenerative Medicine
C3  - Abstract Book: First Serbian molecular medicine congress; 2022 Jun 16-18; Foča, Bosnia and Herzegovina
T1  - New aspects of synthetic tubulysin derivative, tubugi 1, action in murine melanoma model
SP  - 41
SP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5292
ER  - 
@conference{
author = "Drača, Dijana and Mijatović, Sanja and Krajnović, Tamara and Bogdanović Pristov, Jelena and Đukić, Tatjana and Kaluđerović, Goran N. and Wessjohann, Ludger A. and Maksimović-Ivanić, Danijela",
year = "2022",
abstract = "Tubulisins are natural peptide compounds isolated from mycobacterial genera.
They belong to the group of antimitotic agents, since they achieve their antitumor
effect disrupting the function of mitotic spindle. The object of this study was to investigate
anticancer potential of synthetic analogue of tubulysins, tubugi 1, on mouse
melanoma model, in vitro and in vivo. Tubugi 1 decreased dose-dependently viability
of B16 cells. The experimental compound induced atypical apoptosis without the externalization
of phosphatidylserines (PS). Although apoptosis was accompanied with
strong intracellular production of reactive oxygen and nitrogen species, decrease in
malonyldyaldehyde content showed that membrane lipids were not subjected to oxidation,
what is a prerequisite for the externalization of PS. Although PS plays a key
role in the removal of apoptotic cells, this did not affect the phagocytic activity of
macrophages in vitro, implying PS-independent apoptotic cells removal. The effect of
the experimental agent was confirmed in vivo. Мacrophages isolated from peritoneal
exudate of treated animals showed cytotoxic activity, what was in line with demonstrated
expression of M1 phenotype markers, as well as production of nitric oxide.
Additonally, the phagocytic activity of these cells was preserved. Having in mind lack
of data in the literature concerning the effects of this group of agents on components
of the innate immune system, tubugi 1 remains worthy of further research in the field
of experimental oncology., Тубулизини су природна једињења изолована из родова миксобактерија.
Спадају у групу антимитотских агенаса будући да свој антитуморски ефекат
остварују на нивоу деобног вретена. У овој студији испитиван је антитумор-
ски потенцијал синтетског аналога тубулизина, тубуги 1, in vitro и in vivo на
моделу мишјег меланома. Тубуги 1 је на дозно-зависан начин смањио вијаби-
литет B16 ћелија. Експериментално једињење је у овим ћелијама индуковало
атипичну форму апоптотске ћелијске смрти без екстернализације фосфати-
дилсерина (ПС). Иако је апоптоза била праћена снажном продукцијом ре-
активних врста кисеоника и азота, смањење садржаја малонилдиалдехида је
показало да мембрански липиди нису подлегли оксидацији, што је предуслов
за екстернализацију ПС. Иако ПС има кључну улогу у уклањању апоптотских
ћелија, ово се није одразило на фагоцитну активност макрофага in vitro, ука-
зујући на фагоцитозу независну од ПС. Учинак експерименталног агенса је
потврђен in vivo. Макрофаги изоловани из перитонеалног ексудата третира-
них животиња показали су цитотоксичну активност, што је у сагласности са
показаном експресијом маркера М1 фенотипа и продукцијом азот моноксида.
Додатно, фагоцитна способност ових ћелија је била очувана. С обзиром на
недостатак података у литератури о деловању овакве групе агенаса на компо-
ненте урођеног имунског система, тубуги 1 остаје вредан даљих испитивања
на пољу експерименталне онкологије.",
publisher = "Serbian Society for Immunology, Molecular Oncology and Regenerative Medicine",
journal = "Abstract Book: First Serbian molecular medicine congress; 2022 Jun 16-18; Foča, Bosnia and Herzegovina",
title = "New aspects of synthetic tubulysin derivative, tubugi 1, action in murine melanoma model",
pages = "41-42",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5292"
}
Drača, D., Mijatović, S., Krajnović, T., Bogdanović Pristov, J., Đukić, T., Kaluđerović, G. N., Wessjohann, L. A.,& Maksimović-Ivanić, D.. (2022). New aspects of synthetic tubulysin derivative, tubugi 1, action in murine melanoma model. in Abstract Book: First Serbian molecular medicine congress; 2022 Jun 16-18; Foča, Bosnia and Herzegovina
Serbian Society for Immunology, Molecular Oncology and Regenerative Medicine., 41.
https://hdl.handle.net/21.15107/rcub_ibiss_5292
Drača D, Mijatović S, Krajnović T, Bogdanović Pristov J, Đukić T, Kaluđerović GN, Wessjohann LA, Maksimović-Ivanić D. New aspects of synthetic tubulysin derivative, tubugi 1, action in murine melanoma model. in Abstract Book: First Serbian molecular medicine congress; 2022 Jun 16-18; Foča, Bosnia and Herzegovina. 2022;:41.
https://hdl.handle.net/21.15107/rcub_ibiss_5292 .
Drača, Dijana, Mijatović, Sanja, Krajnović, Tamara, Bogdanović Pristov, Jelena, Đukić, Tatjana, Kaluđerović, Goran N., Wessjohann, Ludger A., Maksimović-Ivanić, Danijela, "New aspects of synthetic tubulysin derivative, tubugi 1, action in murine melanoma model" in Abstract Book: First Serbian molecular medicine congress; 2022 Jun 16-18; Foča, Bosnia and Herzegovina (2022):41,
https://hdl.handle.net/21.15107/rcub_ibiss_5292 .

Iron modulates norepinephrine effect on astrocytes

Nikolić, Ljiljana; Korać, Jelena; Bijelić, Dunja; Spasojević, Ivan; Bogdanović Pristov, Jelena

(COST Action CA15133, 2019)

TY  - CONF
AU  - Nikolić, Ljiljana
AU  - Korać, Jelena
AU  - Bijelić, Dunja
AU  - Spasojević, Ivan
AU  - Bogdanović Pristov, Jelena
PY  - 2019
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5510
AB  - Iron, an essential element for living organisms, participates in a wide range of metabolic
processes. It appears predominantly firmly bound to proteins, but can also be loosely bound to
low-affinity ligands, referred as labile iron pool (LIP). The composition and amount of LIP can
vary considerably under different physiological conditions, playing a beneficial role in iron
economy and homeostasis or contributing to the generation of reactive oxygen species. It is
still not known if bioactivity of low-affinity ligands can be modulated by iron binding.
Catecholamine neurotransmitters including norepinephrine (NE) can chelate iron. In the close
vicinity of synaptic cleft, astrocytes are direct target of norepinephrine. Here we show on
cultured rat cortical astrocytes that iron bound to NE completely blocks neurotransmitter
activity of NE. However, how astrocyte activity changes when norepinephrine binds iron
remains unknown.
We show, using spectrophotometry that NE and Fe3+ form complex in the 1:1 stoichiometry,
at pH 7.4. Iron effect on astrocyte response to NE was examined by the whole-cell patch-clamp
technique. NE alone evokes changes in the membrane currents of astrocytes, but such effects
were not observed for the NE- Fe3+ complex.
Our results demonstrating that iron in the complex with norepinephrine inhibits alpha-adrenergic
receptors and modulates astrocyte activity, imply a novel neuromodulatory role for LIP.
PB  - COST Action CA15133
C3  - Book of abstracts: 4th FeSBioNet Meeting: COST Action CA15133; 2019 Sep 16-19; Gdansk, Poland
T1  - Iron modulates norepinephrine effect on astrocytes
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5510
ER  - 
@conference{
author = "Nikolić, Ljiljana and Korać, Jelena and Bijelić, Dunja and Spasojević, Ivan and Bogdanović Pristov, Jelena",
year = "2019",
abstract = "Iron, an essential element for living organisms, participates in a wide range of metabolic
processes. It appears predominantly firmly bound to proteins, but can also be loosely bound to
low-affinity ligands, referred as labile iron pool (LIP). The composition and amount of LIP can
vary considerably under different physiological conditions, playing a beneficial role in iron
economy and homeostasis or contributing to the generation of reactive oxygen species. It is
still not known if bioactivity of low-affinity ligands can be modulated by iron binding.
Catecholamine neurotransmitters including norepinephrine (NE) can chelate iron. In the close
vicinity of synaptic cleft, astrocytes are direct target of norepinephrine. Here we show on
cultured rat cortical astrocytes that iron bound to NE completely blocks neurotransmitter
activity of NE. However, how astrocyte activity changes when norepinephrine binds iron
remains unknown.
We show, using spectrophotometry that NE and Fe3+ form complex in the 1:1 stoichiometry,
at pH 7.4. Iron effect on astrocyte response to NE was examined by the whole-cell patch-clamp
technique. NE alone evokes changes in the membrane currents of astrocytes, but such effects
were not observed for the NE- Fe3+ complex.
Our results demonstrating that iron in the complex with norepinephrine inhibits alpha-adrenergic
receptors and modulates astrocyte activity, imply a novel neuromodulatory role for LIP.",
publisher = "COST Action CA15133",
journal = "Book of abstracts: 4th FeSBioNet Meeting: COST Action CA15133; 2019 Sep 16-19; Gdansk, Poland",
title = "Iron modulates norepinephrine effect on astrocytes",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5510"
}
Nikolić, L., Korać, J., Bijelić, D., Spasojević, I.,& Bogdanović Pristov, J.. (2019). Iron modulates norepinephrine effect on astrocytes. in Book of abstracts: 4th FeSBioNet Meeting: COST Action CA15133; 2019 Sep 16-19; Gdansk, Poland
COST Action CA15133..
https://hdl.handle.net/21.15107/rcub_ibiss_5510
Nikolić L, Korać J, Bijelić D, Spasojević I, Bogdanović Pristov J. Iron modulates norepinephrine effect on astrocytes. in Book of abstracts: 4th FeSBioNet Meeting: COST Action CA15133; 2019 Sep 16-19; Gdansk, Poland. 2019;.
https://hdl.handle.net/21.15107/rcub_ibiss_5510 .
Nikolić, Ljiljana, Korać, Jelena, Bijelić, Dunja, Spasojević, Ivan, Bogdanović Pristov, Jelena, "Iron modulates norepinephrine effect on astrocytes" in Book of abstracts: 4th FeSBioNet Meeting: COST Action CA15133; 2019 Sep 16-19; Gdansk, Poland (2019),
https://hdl.handle.net/21.15107/rcub_ibiss_5510 .

Astrocyte activity in the central nervous system autoimmunity

Nikolić, Ljiljana; Bijelić, Dunja; Lazarević, Milica; Milićević, Katarina; Momčilović, Miljana; Bogdanović Pristov, Jelena; Petković, Branka; Anđus, Pavle; Miljković, Đorđe

(Belgrade : Serbian Neuroscience Society, 2019)

TY  - CONF
AU  - Nikolić, Ljiljana
AU  - Bijelić, Dunja
AU  - Lazarević, Milica
AU  - Milićević, Katarina
AU  - Momčilović, Miljana
AU  - Bogdanović Pristov, Jelena
AU  - Petković, Branka
AU  - Anđus, Pavle
AU  - Miljković, Đorđe
PY  - 2019
UR  - http://radar.ibiss.bg.ac.rs/handle/123456789/5500
AB  - Aims: Multiple sclerosis (MS) is an in ammatory autoimmune disorder of the central nervous system (CNS). Complex
interactions between in ltrating immune cells (IIC) and resident glial cells of the CNS cause myelin loss and neuronal dysfunction
in MS. Here we aim to understand how naïve astrocytes functionally respond to the IIC invasion of the CNS.
Methods: We measured calcium activity of naïve astrocytes in culture upon application of IIC. An experimental autoimmune
encephalomyelitis (EAE) MS rat model was used to isolate IIC from the spinal cord of animals at the symptomatic stage. Naïve
astrocytes were isolated from the spinal cord of WT rats.
Results: We show that IIC and not the lymph node immune cells evoke vigorous increase in the astrocyte calcium activity.
This IIC-induced calcium response depends on an autocrine activation of the purinergic P2X7 receptors on the naïve astrocytes.
We also show that IIC induce ATP release from astrocytes by a mechanism that involves gap junctions and/or hemichannels
activation and not the vesicular pathway. Our data indicate that ATP release and subsequent increase in the astrocytic calcium
activity mainly depends on the cell-cell contact between naïve astrocytes and IIC.
Conclusions: These results show that naïve astrocytes functionally respond to the IIC by augmented release of ATP. An increase
in ATP release would alter astrocyte-neuron communication and a ect neuronal function in MS.
PB  - Belgrade : Serbian Neuroscience Society
C3  - Book of Abstract: Federation of European Neuroscience Societies (FENS) Regional Meeting; 2019 Jul 10-13; Belgrade, Serbia
T1  - Astrocyte activity in the central nervous system autoimmunity
SP  - 295
UR  - https://hdl.handle.net/21.15107/rcub_ibiss_5500
ER  - 
@conference{
author = "Nikolić, Ljiljana and Bijelić, Dunja and Lazarević, Milica and Milićević, Katarina and Momčilović, Miljana and Bogdanović Pristov, Jelena and Petković, Branka and Anđus, Pavle and Miljković, Đorđe",
year = "2019",
abstract = "Aims: Multiple sclerosis (MS) is an in ammatory autoimmune disorder of the central nervous system (CNS). Complex
interactions between in ltrating immune cells (IIC) and resident glial cells of the CNS cause myelin loss and neuronal dysfunction
in MS. Here we aim to understand how naïve astrocytes functionally respond to the IIC invasion of the CNS.
Methods: We measured calcium activity of naïve astrocytes in culture upon application of IIC. An experimental autoimmune
encephalomyelitis (EAE) MS rat model was used to isolate IIC from the spinal cord of animals at the symptomatic stage. Naïve
astrocytes were isolated from the spinal cord of WT rats.
Results: We show that IIC and not the lymph node immune cells evoke vigorous increase in the astrocyte calcium activity.
This IIC-induced calcium response depends on an autocrine activation of the purinergic P2X7 receptors on the naïve astrocytes.
We also show that IIC induce ATP release from astrocytes by a mechanism that involves gap junctions and/or hemichannels
activation and not the vesicular pathway. Our data indicate that ATP release and subsequent increase in the astrocytic calcium
activity mainly depends on the cell-cell contact between naïve astrocytes and IIC.
Conclusions: These results show that naïve astrocytes functionally respond to the IIC by augmented release of ATP. An increase
in ATP release would alter astrocyte-neuron communication and a ect neuronal function in MS.",
publisher = "Belgrade : Serbian Neuroscience Society",
journal = "Book of Abstract: Federation of European Neuroscience Societies (FENS) Regional Meeting; 2019 Jul 10-13; Belgrade, Serbia",
title = "Astrocyte activity in the central nervous system autoimmunity",
pages = "295",
url = "https://hdl.handle.net/21.15107/rcub_ibiss_5500"
}
Nikolić, L., Bijelić, D., Lazarević, M., Milićević, K., Momčilović, M., Bogdanović Pristov, J., Petković, B., Anđus, P.,& Miljković, Đ.. (2019). Astrocyte activity in the central nervous system autoimmunity. in Book of Abstract: Federation of European Neuroscience Societies (FENS) Regional Meeting; 2019 Jul 10-13; Belgrade, Serbia
Belgrade : Serbian Neuroscience Society., 295.
https://hdl.handle.net/21.15107/rcub_ibiss_5500
Nikolić L, Bijelić D, Lazarević M, Milićević K, Momčilović M, Bogdanović Pristov J, Petković B, Anđus P, Miljković Đ. Astrocyte activity in the central nervous system autoimmunity. in Book of Abstract: Federation of European Neuroscience Societies (FENS) Regional Meeting; 2019 Jul 10-13; Belgrade, Serbia. 2019;:295.
https://hdl.handle.net/21.15107/rcub_ibiss_5500 .
Nikolić, Ljiljana, Bijelić, Dunja, Lazarević, Milica, Milićević, Katarina, Momčilović, Miljana, Bogdanović Pristov, Jelena, Petković, Branka, Anđus, Pavle, Miljković, Đorđe, "Astrocyte activity in the central nervous system autoimmunity" in Book of Abstract: Federation of European Neuroscience Societies (FENS) Regional Meeting; 2019 Jul 10-13; Belgrade, Serbia (2019):295,
https://hdl.handle.net/21.15107/rcub_ibiss_5500 .