TY  - JOUR
AU  - Grozdanović, Milica
AU  - Ostojić, Sanja
AU  - Aleksić, Ivana
AU  - Anđelković, Uroš
AU  - Petersen, Arnd
AU  - Gavrović-Jankulović, Marija
PY  - 2014
UR  - http://intor.torlakinstitut.com/handle/123456789/411
AB  - BACKGROUND: Actinidin is a cysteine protease and major allergen from kiwi fruit. When purified under specific native conditions, actinidin preparations from fresh kiwi fruit contain both an active and inactive form of this enzyme. In this study, biochemical and immunological properties upon simulated gastro-intestinal digestion, as well as thermal stability, were investigated for both active and E-64-inhibited actinidin. RESULTS: Active actinidin retained its primary structure and proteolytic activity after 2 h of simulated gastric digestion, followed by 2 h of intestinal digestion, as assessed by SDS-PAGE, zymography and mass spectroscopy. Immunological reactivity of active actinidin was also preserved, as tested by immunoelectrophoresis. The E-64 inhibited actinidin was fully degraded after 1 h of pepsin treatment. Differential scanning calorimetry showed that active actinidin has one transition maximum temperature (T-m) at 73.9 degrees C, whereas in the E-64-actinidin complex the two actinidin domains unfolded independently, with the first domain having a T-m value of only 61 degrees C. CONCLUSION: Active actinidin is capable of reaching the intestinal mucosa in a proteolytically active and immunogenic state. Inhibitor binding induces changes in the actinidin molecule that go beyond inhibition of proteolytic activity, also influencing the digestion stability and T-m values of actinidin, features important in the characterisation of food allergens. (C) 2014 Society of Chemical Industry
PB  - Wiley, Hoboken
T2  - Journal of the Science of Food and Agriculture
T1  - Active actinidin retains function upon gastro-intestinal digestion and is more thermostable than the E-64-inhibited counterpart
EP  - 3052
IS  - 14
SP  - 3046
VL  - 94
DO  - 10.1002/jsfa.6656
ER  - 

@article{
author = "Grozdanović, Milica and Ostojić, Sanja and Aleksić, Ivana and Anđelković, Uroš and Petersen, Arnd and Gavrović-Jankulović, Marija",
year = "2014",
abstract = "BACKGROUND: Actinidin is a cysteine protease and major allergen from kiwi fruit. When purified under specific native conditions, actinidin preparations from fresh kiwi fruit contain both an active and inactive form of this enzyme. In this study, biochemical and immunological properties upon simulated gastro-intestinal digestion, as well as thermal stability, were investigated for both active and E-64-inhibited actinidin. RESULTS: Active actinidin retained its primary structure and proteolytic activity after 2 h of simulated gastric digestion, followed by 2 h of intestinal digestion, as assessed by SDS-PAGE, zymography and mass spectroscopy. Immunological reactivity of active actinidin was also preserved, as tested by immunoelectrophoresis. The E-64 inhibited actinidin was fully degraded after 1 h of pepsin treatment. Differential scanning calorimetry showed that active actinidin has one transition maximum temperature (T-m) at 73.9 degrees C, whereas in the E-64-actinidin complex the two actinidin domains unfolded independently, with the first domain having a T-m value of only 61 degrees C. CONCLUSION: Active actinidin is capable of reaching the intestinal mucosa in a proteolytically active and immunogenic state. Inhibitor binding induces changes in the actinidin molecule that go beyond inhibition of proteolytic activity, also influencing the digestion stability and T-m values of actinidin, features important in the characterisation of food allergens. (C) 2014 Society of Chemical Industry",
publisher = "Wiley, Hoboken",
journal = "Journal of the Science of Food and Agriculture",
title = "Active actinidin retains function upon gastro-intestinal digestion and is more thermostable than the E-64-inhibited counterpart",
pages = "3052-3046",
number = "14",
volume = "94",
doi = "10.1002/jsfa.6656"
}

Grozdanović, M., Ostojić, S., Aleksić, I., Anđelković, U., Petersen, A.,& Gavrović-Jankulović, M.. (2014). Active actinidin retains function upon gastro-intestinal digestion and is more thermostable than the E-64-inhibited counterpart. in Journal of the Science of Food and Agriculture
Wiley, Hoboken., 94(14), 3046-3052.
https://doi.org/10.1002/jsfa.6656

Grozdanović M, Ostojić S, Aleksić I, Anđelković U, Petersen A, Gavrović-Jankulović M. Active actinidin retains function upon gastro-intestinal digestion and is more thermostable than the E-64-inhibited counterpart. in Journal of the Science of Food and Agriculture. 2014;94(14):3046-3052.
doi:10.1002/jsfa.6656 .

Grozdanović, Milica, Ostojić, Sanja, Aleksić, Ivana, Anđelković, Uroš, Petersen, Arnd, Gavrović-Jankulović, Marija, "Active actinidin retains function upon gastro-intestinal digestion and is more thermostable than the E-64-inhibited counterpart" in Journal of the Science of Food and Agriculture, 94, no. 14 (2014):3046-3052,
https://doi.org/10.1002/jsfa.6656 . .

TY  - JOUR
AU  - Dimitrijević, Rajna
AU  - Jadranin, Milka
AU  - Burazer, Lidija
AU  - Ostojić, Sanja
AU  - Gavrović-Jankulović, Marija
PY  - 2010
UR  - http://intor.torlakinstitut.com/handle/123456789/301
AB  - The thermal stability of recombinant mannose-specific banana lectin (rBanLec), as well as its stability under conditions of simulated gastro-intestinal fluid (SGF), was investigated. rBanLec was heterologously produced in Escherichia coli, Molecular mass of rBanLec, assessed by ESI-TOF mass spectrometry, was 15972.2 Da. Thermodynamic parameters for rBanLec denaturation, obtained by differential scanning calorimetry (DSC), revealed a transition maximum temperature (T-m) of 60.8 degrees C, calorimetric enthalpy (H-cal) of 136.17 kcal/mol and van't Hoff enthalpy (H-VH) of 50.27 kcal/mol. rBanLec was stable following an incubation for 2 h in SGF, and then for I h, in the simulated intestinal fluid (SIF). Intact primary structure, biological and immunological reactivity of rBanLec were all preserved following treatment under SGF and SIF conditions. In conclusion, rBanLec is a good candidate for the novel bioadhesive lectin-based drug delivery systems to the gastro-intestinal tract (GIT). (C) 2009 Elsevier Ltd. All rights reserved.
PB  - Elsevier Sci Ltd, Oxford
T2  - Food Chemistry
T1  - Evaluation of the thermal stability and digestibility of heterologously produced banana lectin
EP  - 1118
IS  - 4
SP  - 1113
VL  - 120
DO  - 10.1016/j.foodchem.2009.11.062
ER  - 

@article{
author = "Dimitrijević, Rajna and Jadranin, Milka and Burazer, Lidija and Ostojić, Sanja and Gavrović-Jankulović, Marija",
year = "2010",
abstract = "The thermal stability of recombinant mannose-specific banana lectin (rBanLec), as well as its stability under conditions of simulated gastro-intestinal fluid (SGF), was investigated. rBanLec was heterologously produced in Escherichia coli, Molecular mass of rBanLec, assessed by ESI-TOF mass spectrometry, was 15972.2 Da. Thermodynamic parameters for rBanLec denaturation, obtained by differential scanning calorimetry (DSC), revealed a transition maximum temperature (T-m) of 60.8 degrees C, calorimetric enthalpy (H-cal) of 136.17 kcal/mol and van't Hoff enthalpy (H-VH) of 50.27 kcal/mol. rBanLec was stable following an incubation for 2 h in SGF, and then for I h, in the simulated intestinal fluid (SIF). Intact primary structure, biological and immunological reactivity of rBanLec were all preserved following treatment under SGF and SIF conditions. In conclusion, rBanLec is a good candidate for the novel bioadhesive lectin-based drug delivery systems to the gastro-intestinal tract (GIT). (C) 2009 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Food Chemistry",
title = "Evaluation of the thermal stability and digestibility of heterologously produced banana lectin",
pages = "1118-1113",
number = "4",
volume = "120",
doi = "10.1016/j.foodchem.2009.11.062"
}

Dimitrijević, R., Jadranin, M., Burazer, L., Ostojić, S.,& Gavrović-Jankulović, M.. (2010). Evaluation of the thermal stability and digestibility of heterologously produced banana lectin. in Food Chemistry
Elsevier Sci Ltd, Oxford., 120(4), 1113-1118.
https://doi.org/10.1016/j.foodchem.2009.11.062

Dimitrijević R, Jadranin M, Burazer L, Ostojić S, Gavrović-Jankulović M. Evaluation of the thermal stability and digestibility of heterologously produced banana lectin. in Food Chemistry. 2010;120(4):1113-1118.
doi:10.1016/j.foodchem.2009.11.062 .

Dimitrijević, Rajna, Jadranin, Milka, Burazer, Lidija, Ostojić, Sanja, Gavrović-Jankulović, Marija, "Evaluation of the thermal stability and digestibility of heterologously produced banana lectin" in Food Chemistry, 120, no. 4 (2010):1113-1118,
https://doi.org/10.1016/j.foodchem.2009.11.062 . .