TY  - JOUR
AU  - Prodić, I.
AU  - Stanić-Vučinić, Dragana
AU  - Apostolovic, D.
AU  - Mihailović, Jelena
AU  - Radibratović, Milica
AU  - Radosavljevic, J.
AU  - Burazer, L.
AU  - Milčić, Miloš
AU  - Smiljanic, K.
AU  - van, Hage M.
AU  - Ćirković Veličković, Tanja
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2299
AB  - BackgroundMost food allergens sensitizing via the gastrointestinal tract are stable proteins that are resistant to pepsin digestion, in particular major peanut allergens, Ara h 2 and Ara h 6. Survival of their large fragments is essential for sensitizing capacity. However, the immunoreactive proteins/peptides to which the immune system of the gastrointestinal tract is exposed during digestion of peanut proteins are unknown. Particularly, the IgE reactivity of short digestion-resistant peptides (SDRPs;  LT 10kDa) released by gastric digestion under standardized and physiologically relevant invitro conditions has not been investigated. ObjectiveThe aim of this study was to investigate and identify digestion products of major peanut allergens and in particular to examine IgE reactivity of SDRPs released by pepsin digestion of whole peanut grains. MethodsTwo-dimensional gel-based proteomics and shotgun peptidomics, immunoblotting with allergen-specific antibodies from peanut-sensitized patients, enzyme-linked immunosorbent inhibition assay and ImmunoCAP tests, including far ultraviolet-circular dichroism spectroscopy were used to identify and characterize peanut digesta. ResultsAra h 2 and Ara h 6 remained mostly intact, and SDRPs from Ara h 2 were more potent in inhibiting IgE binding than Ara h 1 and Ara 3. Ara h 1 and Ara h 3 exhibited sequential digestion into a series of digestion-resistant peptides with preserved allergenic capacity. A high number of identified SDRPs from Ara h 1, Ara h 2 and Ara h 3 were part of short continuous epitope sequences and possessed substantial allergenic potential. Conclusion and Clinical RelevancePeanut grain digestion by oral and gastric phase enzymes generates mixture of products, where the major peanut allergens remain intact and their digested peptides have preserved allergenic capacity highlighting their important roles in allergic reactions to peanut.
PB  - Wiley, Hoboken
T2  - Clinical and Experimental Allergy
T1  - Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides
VL  - 48
IS  - 6
SP  - 731
EP  - 740
DO  - 10.1111/cea.13113
ER  - 

@article{
author = "Prodić, I. and Stanić-Vučinić, Dragana and Apostolovic, D. and Mihailović, Jelena and Radibratović, Milica and Radosavljevic, J. and Burazer, L. and Milčić, Miloš and Smiljanic, K. and van, Hage M. and Ćirković Veličković, Tanja",
year = "2018",
abstract = "BackgroundMost food allergens sensitizing via the gastrointestinal tract are stable proteins that are resistant to pepsin digestion, in particular major peanut allergens, Ara h 2 and Ara h 6. Survival of their large fragments is essential for sensitizing capacity. However, the immunoreactive proteins/peptides to which the immune system of the gastrointestinal tract is exposed during digestion of peanut proteins are unknown. Particularly, the IgE reactivity of short digestion-resistant peptides (SDRPs;  LT 10kDa) released by gastric digestion under standardized and physiologically relevant invitro conditions has not been investigated. ObjectiveThe aim of this study was to investigate and identify digestion products of major peanut allergens and in particular to examine IgE reactivity of SDRPs released by pepsin digestion of whole peanut grains. MethodsTwo-dimensional gel-based proteomics and shotgun peptidomics, immunoblotting with allergen-specific antibodies from peanut-sensitized patients, enzyme-linked immunosorbent inhibition assay and ImmunoCAP tests, including far ultraviolet-circular dichroism spectroscopy were used to identify and characterize peanut digesta. ResultsAra h 2 and Ara h 6 remained mostly intact, and SDRPs from Ara h 2 were more potent in inhibiting IgE binding than Ara h 1 and Ara 3. Ara h 1 and Ara h 3 exhibited sequential digestion into a series of digestion-resistant peptides with preserved allergenic capacity. A high number of identified SDRPs from Ara h 1, Ara h 2 and Ara h 3 were part of short continuous epitope sequences and possessed substantial allergenic potential. Conclusion and Clinical RelevancePeanut grain digestion by oral and gastric phase enzymes generates mixture of products, where the major peanut allergens remain intact and their digested peptides have preserved allergenic capacity highlighting their important roles in allergic reactions to peanut.",
publisher = "Wiley, Hoboken",
journal = "Clinical and Experimental Allergy",
title = "Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides",
volume = "48",
number = "6",
pages = "731-740",
doi = "10.1111/cea.13113"
}

Prodić, I., Stanić-Vučinić, D., Apostolovic, D., Mihailović, J., Radibratović, M., Radosavljevic, J., Burazer, L., Milčić, M., Smiljanic, K., van, H. M.,& Ćirković Veličković, T.. (2018). Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides. in Clinical and Experimental Allergy
Wiley, Hoboken., 48(6), 731-740.
https://doi.org/10.1111/cea.13113

Prodić I, Stanić-Vučinić D, Apostolovic D, Mihailović J, Radibratović M, Radosavljevic J, Burazer L, Milčić M, Smiljanic K, van HM, Ćirković Veličković T. Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides. in Clinical and Experimental Allergy. 2018;48(6):731-740.
doi:10.1111/cea.13113 .

Prodić, I., Stanić-Vučinić, Dragana, Apostolovic, D., Mihailović, Jelena, Radibratović, Milica, Radosavljevic, J., Burazer, L., Milčić, Miloš, Smiljanic, K., van, Hage M., Ćirković Veličković, Tanja, "Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides" in Clinical and Experimental Allergy, 48, no. 6 (2018):731-740,
https://doi.org/10.1111/cea.13113 . .

TY  - JOUR
AU  - Prodić, I.
AU  - Stanić-Vučinić, Dragana
AU  - Apostolovic, D.
AU  - Mihailović, Jelena
AU  - Radibratović, Milica
AU  - Radosavljevic, J.
AU  - Burazer, L.
AU  - Milčić, Miloš
AU  - Smiljanic, K.
AU  - van, Hage M.
AU  - Ćirković Veličković, Tanja
PY  - 2018
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3340
AB  - BackgroundMost food allergens sensitizing via the gastrointestinal tract are stable proteins that are resistant to pepsin digestion, in particular major peanut allergens, Ara h 2 and Ara h 6. Survival of their large fragments is essential for sensitizing capacity. However, the immunoreactive proteins/peptides to which the immune system of the gastrointestinal tract is exposed during digestion of peanut proteins are unknown. Particularly, the IgE reactivity of short digestion-resistant peptides (SDRPs;  LT 10kDa) released by gastric digestion under standardized and physiologically relevant invitro conditions has not been investigated. ObjectiveThe aim of this study was to investigate and identify digestion products of major peanut allergens and in particular to examine IgE reactivity of SDRPs released by pepsin digestion of whole peanut grains. MethodsTwo-dimensional gel-based proteomics and shotgun peptidomics, immunoblotting with allergen-specific antibodies from peanut-sensitized patients, enzyme-linked immunosorbent inhibition assay and ImmunoCAP tests, including far ultraviolet-circular dichroism spectroscopy were used to identify and characterize peanut digesta. ResultsAra h 2 and Ara h 6 remained mostly intact, and SDRPs from Ara h 2 were more potent in inhibiting IgE binding than Ara h 1 and Ara 3. Ara h 1 and Ara h 3 exhibited sequential digestion into a series of digestion-resistant peptides with preserved allergenic capacity. A high number of identified SDRPs from Ara h 1, Ara h 2 and Ara h 3 were part of short continuous epitope sequences and possessed substantial allergenic potential. Conclusion and Clinical RelevancePeanut grain digestion by oral and gastric phase enzymes generates mixture of products, where the major peanut allergens remain intact and their digested peptides have preserved allergenic capacity highlighting their important roles in allergic reactions to peanut.
PB  - Wiley, Hoboken
T2  - Clinical and Experimental Allergy
T1  - Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides
VL  - 48
IS  - 6
SP  - 731
EP  - 740
DO  - 10.1111/cea.13113
ER  - 

@article{
author = "Prodić, I. and Stanić-Vučinić, Dragana and Apostolovic, D. and Mihailović, Jelena and Radibratović, Milica and Radosavljevic, J. and Burazer, L. and Milčić, Miloš and Smiljanic, K. and van, Hage M. and Ćirković Veličković, Tanja",
year = "2018",
abstract = "BackgroundMost food allergens sensitizing via the gastrointestinal tract are stable proteins that are resistant to pepsin digestion, in particular major peanut allergens, Ara h 2 and Ara h 6. Survival of their large fragments is essential for sensitizing capacity. However, the immunoreactive proteins/peptides to which the immune system of the gastrointestinal tract is exposed during digestion of peanut proteins are unknown. Particularly, the IgE reactivity of short digestion-resistant peptides (SDRPs;  LT 10kDa) released by gastric digestion under standardized and physiologically relevant invitro conditions has not been investigated. ObjectiveThe aim of this study was to investigate and identify digestion products of major peanut allergens and in particular to examine IgE reactivity of SDRPs released by pepsin digestion of whole peanut grains. MethodsTwo-dimensional gel-based proteomics and shotgun peptidomics, immunoblotting with allergen-specific antibodies from peanut-sensitized patients, enzyme-linked immunosorbent inhibition assay and ImmunoCAP tests, including far ultraviolet-circular dichroism spectroscopy were used to identify and characterize peanut digesta. ResultsAra h 2 and Ara h 6 remained mostly intact, and SDRPs from Ara h 2 were more potent in inhibiting IgE binding than Ara h 1 and Ara 3. Ara h 1 and Ara h 3 exhibited sequential digestion into a series of digestion-resistant peptides with preserved allergenic capacity. A high number of identified SDRPs from Ara h 1, Ara h 2 and Ara h 3 were part of short continuous epitope sequences and possessed substantial allergenic potential. Conclusion and Clinical RelevancePeanut grain digestion by oral and gastric phase enzymes generates mixture of products, where the major peanut allergens remain intact and their digested peptides have preserved allergenic capacity highlighting their important roles in allergic reactions to peanut.",
publisher = "Wiley, Hoboken",
journal = "Clinical and Experimental Allergy",
title = "Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides",
volume = "48",
number = "6",
pages = "731-740",
doi = "10.1111/cea.13113"
}

Prodić, I., Stanić-Vučinić, D., Apostolovic, D., Mihailović, J., Radibratović, M., Radosavljevic, J., Burazer, L., Milčić, M., Smiljanic, K., van, H. M.,& Ćirković Veličković, T.. (2018). Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides. in Clinical and Experimental Allergy
Wiley, Hoboken., 48(6), 731-740.
https://doi.org/10.1111/cea.13113

Prodić I, Stanić-Vučinić D, Apostolovic D, Mihailović J, Radibratović M, Radosavljevic J, Burazer L, Milčić M, Smiljanic K, van HM, Ćirković Veličković T. Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides. in Clinical and Experimental Allergy. 2018;48(6):731-740.
doi:10.1111/cea.13113 .

Prodić, I., Stanić-Vučinić, Dragana, Apostolovic, D., Mihailović, Jelena, Radibratović, Milica, Radosavljevic, J., Burazer, L., Milčić, Miloš, Smiljanic, K., van, Hage M., Ćirković Veličković, Tanja, "Influence of peanut matrix on stability of allergens in gastric-simulated digesta: 2S albumins are main contributors to the IgE reactivity of short digestion-resistant peptides" in Clinical and Experimental Allergy, 48, no. 6 (2018):731-740,
https://doi.org/10.1111/cea.13113 . .

TY  - JOUR
AU  - Apostolovic, Danijela
AU  - Stanić-Vučinić, Dragana
AU  - de, Jongh Harmen H J
AU  - de, Jong Govardus A H
AU  - Mihailović, Jelena
AU  - Radosavljević, Jelena
AU  - Radibratović, Milica
AU  - Nordlee, Julie A
AU  - Baumert, Joseph L
AU  - Milčić, Miloš
AU  - Taylor, Steve L
AU  - Clua, Nuria Garrido
AU  - Ćirković Veličković, Tanja
AU  - Koppelman, Stef J
PY  - 2016
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1853
AB  - Conglutins represent the major peanut allergens and are renowned for their resistance to gastrointestinal digestion. Our aim was to characterize the digestion-resistant peptides (DRPs) of conglutins by biochemical and biophysical methods followed by a molecular dynamics simulation in order to better understand the molecular basis of food protein allergenicity. We have mapped proteolysis sites at the N- and C-termini and at a limited internal segment, while other potential proteolysis sites remained unaffected. Molecular dynamics simulation showed that proteolysis only occurred in the vibrant regions of the proteins. DRPs appeared to be conformationally stable as intact conglutins. Also, the overall secondary structure and IgE-binding potency of DRPs was comparable to that of intact conglutins. The stability of conglutins toward gastro-intestinal digestion, combined with the conformational stability of the resulting DRPs provide conditions for optimal exposure to the intestinal immune system, providing an explanation for the extraordinary allergenicity of peanut conglutins.
PB  - Nature Publishing Group, London
T2  - Scientific Reports
T1  - Conformational stability of digestion-resistant peptides of peanut conglutins reveals the molecular basis of their allergenicity
VL  - 6
DO  - 10.1038/srep29249
ER  - 

@article{
author = "Apostolovic, Danijela and Stanić-Vučinić, Dragana and de, Jongh Harmen H J and de, Jong Govardus A H and Mihailović, Jelena and Radosavljević, Jelena and Radibratović, Milica and Nordlee, Julie A and Baumert, Joseph L and Milčić, Miloš and Taylor, Steve L and Clua, Nuria Garrido and Ćirković Veličković, Tanja and Koppelman, Stef J",
year = "2016",
abstract = "Conglutins represent the major peanut allergens and are renowned for their resistance to gastrointestinal digestion. Our aim was to characterize the digestion-resistant peptides (DRPs) of conglutins by biochemical and biophysical methods followed by a molecular dynamics simulation in order to better understand the molecular basis of food protein allergenicity. We have mapped proteolysis sites at the N- and C-termini and at a limited internal segment, while other potential proteolysis sites remained unaffected. Molecular dynamics simulation showed that proteolysis only occurred in the vibrant regions of the proteins. DRPs appeared to be conformationally stable as intact conglutins. Also, the overall secondary structure and IgE-binding potency of DRPs was comparable to that of intact conglutins. The stability of conglutins toward gastro-intestinal digestion, combined with the conformational stability of the resulting DRPs provide conditions for optimal exposure to the intestinal immune system, providing an explanation for the extraordinary allergenicity of peanut conglutins.",
publisher = "Nature Publishing Group, London",
journal = "Scientific Reports",
title = "Conformational stability of digestion-resistant peptides of peanut conglutins reveals the molecular basis of their allergenicity",
volume = "6",
doi = "10.1038/srep29249"
}

Apostolovic, D., Stanić-Vučinić, D., de, J. H. H. J., de, J. G. A. H., Mihailović, J., Radosavljević, J., Radibratović, M., Nordlee, J. A., Baumert, J. L., Milčić, M., Taylor, S. L., Clua, N. G., Ćirković Veličković, T.,& Koppelman, S. J.. (2016). Conformational stability of digestion-resistant peptides of peanut conglutins reveals the molecular basis of their allergenicity. in Scientific Reports
Nature Publishing Group, London., 6.
https://doi.org/10.1038/srep29249

Apostolovic D, Stanić-Vučinić D, de JHHJ, de JGAH, Mihailović J, Radosavljević J, Radibratović M, Nordlee JA, Baumert JL, Milčić M, Taylor SL, Clua NG, Ćirković Veličković T, Koppelman SJ. Conformational stability of digestion-resistant peptides of peanut conglutins reveals the molecular basis of their allergenicity. in Scientific Reports. 2016;6.
doi:10.1038/srep29249 .

Apostolovic, Danijela, Stanić-Vučinić, Dragana, de, Jongh Harmen H J, de, Jong Govardus A H, Mihailović, Jelena, Radosavljević, Jelena, Radibratović, Milica, Nordlee, Julie A, Baumert, Joseph L, Milčić, Miloš, Taylor, Steve L, Clua, Nuria Garrido, Ćirković Veličković, Tanja, Koppelman, Stef J, "Conformational stability of digestion-resistant peptides of peanut conglutins reveals the molecular basis of their allergenicity" in Scientific Reports, 6 (2016),
https://doi.org/10.1038/srep29249 . .

TY  - JOUR
AU  - Novaković, Miroslav
AU  - Stanković, Miroslava
AU  - Vučković, Ivan
AU  - Todorović, Nina
AU  - Trifunović, Snežana
AU  - Apostolovic, Danijela
AU  - Mandić, Boris
AU  - Veljić, Milan
AU  - Marin, Petar D.
AU  - Tešević, Vele
AU  - Vajs, Vlatka
AU  - Milosavljević, Slobodan
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1596
AB  - Nine diarylheptanoids, 1-9, catechin (11), and a phenolic glucoside, 10, were isolated from the bark of green alder (Alnus viridis). Four of the isolated compounds, i.e., 2, 5, 8, 10, are new. The structures of 1-11 were determined on the basis of spectroscopic data. All isolated compounds were evaluated for their in vitro protective effects on chromosome aberrations in peripheral human lymphocytes using cytokinesis-block micronucleus (CBMN) assay. Almost all of them exerted a pronounced effect of decreasing DNA damage of human lymphocytes, acting stronger than the known synthetic protector amifostine.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Chemistry & Biodiversity
T1  - Diarylheptanoids from Green Alder Bark and Their Potential for DNA Protection
VL  - 11
IS  - 6
SP  - 872
EP  - 885
DO  - 10.1002/cbdv.201300277
ER  - 

@article{
author = "Novaković, Miroslav and Stanković, Miroslava and Vučković, Ivan and Todorović, Nina and Trifunović, Snežana and Apostolovic, Danijela and Mandić, Boris and Veljić, Milan and Marin, Petar D. and Tešević, Vele and Vajs, Vlatka and Milosavljević, Slobodan",
year = "2014",
abstract = "Nine diarylheptanoids, 1-9, catechin (11), and a phenolic glucoside, 10, were isolated from the bark of green alder (Alnus viridis). Four of the isolated compounds, i.e., 2, 5, 8, 10, are new. The structures of 1-11 were determined on the basis of spectroscopic data. All isolated compounds were evaluated for their in vitro protective effects on chromosome aberrations in peripheral human lymphocytes using cytokinesis-block micronucleus (CBMN) assay. Almost all of them exerted a pronounced effect of decreasing DNA damage of human lymphocytes, acting stronger than the known synthetic protector amifostine.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Chemistry & Biodiversity",
title = "Diarylheptanoids from Green Alder Bark and Their Potential for DNA Protection",
volume = "11",
number = "6",
pages = "872-885",
doi = "10.1002/cbdv.201300277"
}

Novaković, M., Stanković, M., Vučković, I., Todorović, N., Trifunović, S., Apostolovic, D., Mandić, B., Veljić, M., Marin, P. D., Tešević, V., Vajs, V.,& Milosavljević, S.. (2014). Diarylheptanoids from Green Alder Bark and Their Potential for DNA Protection. in Chemistry & Biodiversity
Wiley-V C H Verlag Gmbh, Weinheim., 11(6), 872-885.
https://doi.org/10.1002/cbdv.201300277

Novaković M, Stanković M, Vučković I, Todorović N, Trifunović S, Apostolovic D, Mandić B, Veljić M, Marin PD, Tešević V, Vajs V, Milosavljević S. Diarylheptanoids from Green Alder Bark and Their Potential for DNA Protection. in Chemistry & Biodiversity. 2014;11(6):872-885.
doi:10.1002/cbdv.201300277 .

Novaković, Miroslav, Stanković, Miroslava, Vučković, Ivan, Todorović, Nina, Trifunović, Snežana, Apostolovic, Danijela, Mandić, Boris, Veljić, Milan, Marin, Petar D., Tešević, Vele, Vajs, Vlatka, Milosavljević, Slobodan, "Diarylheptanoids from Green Alder Bark and Their Potential for DNA Protection" in Chemistry & Biodiversity, 11, no. 6 (2014):872-885,
https://doi.org/10.1002/cbdv.201300277 . .