TY  - JOUR
AU  - Mančić, Lidija
AU  - Đukić-Vuković, Aleksandra
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Costa, Antonio Mario Leal Martins
AU  - Marinković, Bojan A.
AU  - Mojović, Ljiljana
AU  - Milošević, Olivera
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3885
AB  - The emerging up-conversion nanoparticles (UCNPs) offer a wide range of biotechnology applications, from biomarkers and deep tissue imaging, to single molecule tracking and drug delivery. Their successful conjugation to biocompatible agents is crucial for specific molecules recognition and usually requires multiple steps which may lead to low reproducibility. Here, we report a simple and rapid one-step procedure for in situ synthesis of biocompatible amino-functionalized NaYF4:Yb,Er UCNPs that could be used for NIR-driven fluorescence cell labeling. X-ray diffraction showed that UCNPs synthesized through chitosan-assisted solvothermal processing are monophasic and crystallize in a cubic alpha phase. Scanning and transmission electron microscopy revealed that the obtained crystals are spherical in shape with a mean diameter of 120 nm. Photoluminescence spectra indicated weaker green (H-2(11/2), S-4(3/2) - gt  (4)/(15/2)) and stronger red emission (F-4(9/2) - gt  (4)/(15/2)), as a result of enhanced non-radiative (4)/(11/2) - gt  (4)/(13/2) Er3+ relaxation. The presence of chitosan groups at the surface of UCNPs was confirmed by Fourier transform infrared spectroscopy, thermogravimetry and X-ray photoelectron spectroscopy. This provides their enhanced internalization in cells, at low concentration of 10 mu g ml(-1), without suppression of cell viability after 24 h of exposure. Furthermore, upon 980 nm laser irradiation, the amino-functionalized NaYF4:Yb,Er UCNPs were successfully used in vitro for labeling of two human cell types, normal gingival and oral squamous cell carcinoma.
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging
EP  - 27437
IS  - 48
SP  - 27429
VL  - 8
DO  - 10.1039/c8ra04178d
ER  - 

@article{
author = "Mančić, Lidija and Đukić-Vuković, Aleksandra and Dinić, Ivana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Costa, Antonio Mario Leal Martins and Marinković, Bojan A. and Mojović, Ljiljana and Milošević, Olivera",
year = "2018",
abstract = "The emerging up-conversion nanoparticles (UCNPs) offer a wide range of biotechnology applications, from biomarkers and deep tissue imaging, to single molecule tracking and drug delivery. Their successful conjugation to biocompatible agents is crucial for specific molecules recognition and usually requires multiple steps which may lead to low reproducibility. Here, we report a simple and rapid one-step procedure for in situ synthesis of biocompatible amino-functionalized NaYF4:Yb,Er UCNPs that could be used for NIR-driven fluorescence cell labeling. X-ray diffraction showed that UCNPs synthesized through chitosan-assisted solvothermal processing are monophasic and crystallize in a cubic alpha phase. Scanning and transmission electron microscopy revealed that the obtained crystals are spherical in shape with a mean diameter of 120 nm. Photoluminescence spectra indicated weaker green (H-2(11/2), S-4(3/2) - gt  (4)/(15/2)) and stronger red emission (F-4(9/2) - gt  (4)/(15/2)), as a result of enhanced non-radiative (4)/(11/2) - gt  (4)/(13/2) Er3+ relaxation. The presence of chitosan groups at the surface of UCNPs was confirmed by Fourier transform infrared spectroscopy, thermogravimetry and X-ray photoelectron spectroscopy. This provides their enhanced internalization in cells, at low concentration of 10 mu g ml(-1), without suppression of cell viability after 24 h of exposure. Furthermore, upon 980 nm laser irradiation, the amino-functionalized NaYF4:Yb,Er UCNPs were successfully used in vitro for labeling of two human cell types, normal gingival and oral squamous cell carcinoma.",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging",
pages = "27437-27429",
number = "48",
volume = "8",
doi = "10.1039/c8ra04178d"
}

Mančić, L., Đukić-Vuković, A., Dinić, I., Nikolić, M. G., Rabasović, M. D., Krmpot, A., Costa, A. M. L. M., Marinković, B. A., Mojović, L.,& Milošević, O.. (2018). One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging. in RSC Advances
Royal Society of Chemistry., 8(48), 27429-27437.
https://doi.org/10.1039/c8ra04178d

Mančić L, Đukić-Vuković A, Dinić I, Nikolić MG, Rabasović MD, Krmpot A, Costa AMLM, Marinković BA, Mojović L, Milošević O. One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging. in RSC Advances. 2018;8(48):27429-27437.
doi:10.1039/c8ra04178d .

Mančić, Lidija, Đukić-Vuković, Aleksandra, Dinić, Ivana, Nikolić, Marko G., Rabasović, Mihailo D., Krmpot, Aleksandar, Costa, Antonio Mario Leal Martins, Marinković, Bojan A., Mojović, Ljiljana, Milošević, Olivera, "One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging" in RSC Advances, 8, no. 48 (2018):27429-27437,
https://doi.org/10.1039/c8ra04178d . .

TY  - DATA
AU  - Mančić, Lidija
AU  - Đukić-Vuković, Aleksandra
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Costa, Antonio Mario Leal Martins
AU  - Marinković, Bojan A.
AU  - Mojović, Ljiljana
AU  - Milošević, Olivera
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3772
AB  - Fig. S1. TEM (a) and HRTEM (b) images of amino modified NaYF4:Yb,Er UCNPs. Corresponding FFT/IFFT given as insets in b, confirms that much smaller crystallites notable at the particles surfaces (a) revealed periodic array of cubic alpha phase, (111) plane with d value of 3.140 Å; Fig. S2. XPS spectrum of amino-functionalized NaYF4:Yb,Er UCNPs: survey spectrum and fine-scan spectra of Na 1s, Y 3d, Yb 4d, Er 4d, F 1s and decomposed ones of C 1s, O 1s and N 1s; Fig. S3. Photostability of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles. The emission intensity was traced during 1h;
PB  - Royal Society of Chemistry
T2  - RSC Advances
T1  - Supplementary file: Mancic, L., Djukic-Vukovic, A., Dinic, I., Nikolic, M.G., Rabasovic, M.D., Krmpot, A.J., Costa, A.M.L.M., Marinkovic, B.A., Mojovic, L., Milosevic, O., 2018. One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging. RSC Adv. 8, 27429–27437. https://doi.org/10.1039/C8RA04178D
IS  - 48
VL  - 8
UR  - https://hdl.handle.net/21.15107/rcub_dais_3785
ER  - 

@misc{
author = "Mančić, Lidija and Đukić-Vuković, Aleksandra and Dinić, Ivana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Costa, Antonio Mario Leal Martins and Marinković, Bojan A. and Mojović, Ljiljana and Milošević, Olivera",
year = "2018",
abstract = "Fig. S1. TEM (a) and HRTEM (b) images of amino modified NaYF4:Yb,Er UCNPs. Corresponding FFT/IFFT given as insets in b, confirms that much smaller crystallites notable at the particles surfaces (a) revealed periodic array of cubic alpha phase, (111) plane with d value of 3.140 Å; Fig. S2. XPS spectrum of amino-functionalized NaYF4:Yb,Er UCNPs: survey spectrum and fine-scan spectra of Na 1s, Y 3d, Yb 4d, Er 4d, F 1s and decomposed ones of C 1s, O 1s and N 1s; Fig. S3. Photostability of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles. The emission intensity was traced during 1h;",
publisher = "Royal Society of Chemistry",
journal = "RSC Advances",
title = "Supplementary file: Mancic, L., Djukic-Vukovic, A., Dinic, I., Nikolic, M.G., Rabasovic, M.D., Krmpot, A.J., Costa, A.M.L.M., Marinkovic, B.A., Mojovic, L., Milosevic, O., 2018. One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging. RSC Adv. 8, 27429–27437. https://doi.org/10.1039/C8RA04178D",
number = "48",
volume = "8",
url = "https://hdl.handle.net/21.15107/rcub_dais_3785"
}

Mančić, L., Đukić-Vuković, A., Dinić, I., Nikolić, M. G., Rabasović, M. D., Krmpot, A., Costa, A. M. L. M., Marinković, B. A., Mojović, L.,& Milošević, O.. (2018). Supplementary file: Mancic, L., Djukic-Vukovic, A., Dinic, I., Nikolic, M.G., Rabasovic, M.D., Krmpot, A.J., Costa, A.M.L.M., Marinkovic, B.A., Mojovic, L., Milosevic, O., 2018. One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging. RSC Adv. 8, 27429–27437. https://doi.org/10.1039/C8RA04178D. in RSC Advances
Royal Society of Chemistry., 8(48).
https://hdl.handle.net/21.15107/rcub_dais_3785

Mančić L, Đukić-Vuković A, Dinić I, Nikolić MG, Rabasović MD, Krmpot A, Costa AMLM, Marinković BA, Mojović L, Milošević O. Supplementary file: Mancic, L., Djukic-Vukovic, A., Dinic, I., Nikolic, M.G., Rabasovic, M.D., Krmpot, A.J., Costa, A.M.L.M., Marinkovic, B.A., Mojovic, L., Milosevic, O., 2018. One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging. RSC Adv. 8, 27429–27437. https://doi.org/10.1039/C8RA04178D. in RSC Advances. 2018;8(48).
https://hdl.handle.net/21.15107/rcub_dais_3785 .

Mančić, Lidija, Đukić-Vuković, Aleksandra, Dinić, Ivana, Nikolić, Marko G., Rabasović, Mihailo D., Krmpot, Aleksandar, Costa, Antonio Mario Leal Martins, Marinković, Bojan A., Mojović, Ljiljana, Milošević, Olivera, "Supplementary file: Mancic, L., Djukic-Vukovic, A., Dinic, I., Nikolic, M.G., Rabasovic, M.D., Krmpot, A.J., Costa, A.M.L.M., Marinkovic, B.A., Mojovic, L., Milosevic, O., 2018. One-step synthesis of amino-functionalized up-converting NaYF4:Yb,Er nanoparticles for in vitro cell imaging. RSC Adv. 8, 27429–27437. https://doi.org/10.1039/C8RA04178D" in RSC Advances, 8, no. 48 (2018),
https://hdl.handle.net/21.15107/rcub_dais_3785 .

TY  - DATA
AU  - Mančić, Lidija
AU  - Đukić-Vuković, Aleksandra
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Costa, Antonio Mario Leal Martins
AU  - Trišić, Dijana
AU  - Lazarević, Miloš
AU  - Mojović, Ljiljana
AU  - Milošević, Olivera B.
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3769
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Science and Engineering. C: Materials for Biological Applications
T1  - Supplementary material for the article: Mancic, L.; Djukic-Vukovic, A.; Dinic, I.; Nikolic, M. G.; Rabasovic, M. D.; Krmpot, A. J.;  Costa, A. M. L. M.; Trisic, D.; Lazarevic, M.; Mojovic, L.; et al. NIR Photo-Driven  Upconversion in NaYF 4 :Yb,Er/PLGA Particles for in Vitro Bioimaging of Cancer Cells.  Materials Science and Engineering C 2018, 91, 597–605.  https://doi.org/10.1016/j.msec.2018.05.081
UR  - https://hdl.handle.net/21.15107/rcub_dais_5978
ER  - 

@misc{
author = "Mančić, Lidija and Đukić-Vuković, Aleksandra and Dinić, Ivana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Costa, Antonio Mario Leal Martins and Trišić, Dijana and Lazarević, Miloš and Mojović, Ljiljana and Milošević, Olivera B.",
year = "2018",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Science and Engineering. C: Materials for Biological Applications",
title = "Supplementary material for the article: Mancic, L.; Djukic-Vukovic, A.; Dinic, I.; Nikolic, M. G.; Rabasovic, M. D.; Krmpot, A. J.;  Costa, A. M. L. M.; Trisic, D.; Lazarevic, M.; Mojovic, L.; et al. NIR Photo-Driven  Upconversion in NaYF 4 :Yb,Er/PLGA Particles for in Vitro Bioimaging of Cancer Cells.  Materials Science and Engineering C 2018, 91, 597–605.  https://doi.org/10.1016/j.msec.2018.05.081",
url = "https://hdl.handle.net/21.15107/rcub_dais_5978"
}

Mančić, L., Đukić-Vuković, A., Dinić, I., Nikolić, M. G., Rabasović, M. D., Krmpot, A., Costa, A. M. L. M., Trišić, D., Lazarević, M., Mojović, L.,& Milošević, O. B.. (2018). Supplementary material for the article: Mancic, L.; Djukic-Vukovic, A.; Dinic, I.; Nikolic, M. G.; Rabasovic, M. D.; Krmpot, A. J.;  Costa, A. M. L. M.; Trisic, D.; Lazarevic, M.; Mojovic, L.; et al. NIR Photo-Driven  Upconversion in NaYF 4 :Yb,Er/PLGA Particles for in Vitro Bioimaging of Cancer Cells.  Materials Science and Engineering C 2018, 91, 597–605.  https://doi.org/10.1016/j.msec.2018.05.081. in Materials Science and Engineering. C: Materials for Biological Applications
Elsevier Science Bv, Amsterdam..
https://hdl.handle.net/21.15107/rcub_dais_5978

Mančić L, Đukić-Vuković A, Dinić I, Nikolić MG, Rabasović MD, Krmpot A, Costa AMLM, Trišić D, Lazarević M, Mojović L, Milošević OB. Supplementary material for the article: Mancic, L.; Djukic-Vukovic, A.; Dinic, I.; Nikolic, M. G.; Rabasovic, M. D.; Krmpot, A. J.;  Costa, A. M. L. M.; Trisic, D.; Lazarevic, M.; Mojovic, L.; et al. NIR Photo-Driven  Upconversion in NaYF 4 :Yb,Er/PLGA Particles for in Vitro Bioimaging of Cancer Cells.  Materials Science and Engineering C 2018, 91, 597–605.  https://doi.org/10.1016/j.msec.2018.05.081. in Materials Science and Engineering. C: Materials for Biological Applications. 2018;.
https://hdl.handle.net/21.15107/rcub_dais_5978 .

Mančić, Lidija, Đukić-Vuković, Aleksandra, Dinić, Ivana, Nikolić, Marko G., Rabasović, Mihailo D., Krmpot, Aleksandar, Costa, Antonio Mario Leal Martins, Trišić, Dijana, Lazarević, Miloš, Mojović, Ljiljana, Milošević, Olivera B., "Supplementary material for the article: Mancic, L.; Djukic-Vukovic, A.; Dinic, I.; Nikolic, M. G.; Rabasovic, M. D.; Krmpot, A. J.;  Costa, A. M. L. M.; Trisic, D.; Lazarevic, M.; Mojovic, L.; et al. NIR Photo-Driven  Upconversion in NaYF 4 :Yb,Er/PLGA Particles for in Vitro Bioimaging of Cancer Cells.  Materials Science and Engineering C 2018, 91, 597–605.  https://doi.org/10.1016/j.msec.2018.05.081" in Materials Science and Engineering. C: Materials for Biological Applications (2018),
https://hdl.handle.net/21.15107/rcub_dais_5978 .

TY  - JOUR
AU  - Mančić, Lidija
AU  - Đukić-Vuković, Aleksandra
AU  - Dinić, Ivana
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Costa, Antonio Mario Leal Martins
AU  - Trišić, Dijana
AU  - Lazarević, Miloš
AU  - Mojović, Ljiljana
AU  - Milošević, Olivera
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3852
AB  - Lanthanide-doped fluoride up-converting nanoparticles (UCNPs) represent the new class of imaging contrast agents which hold great potential for overcoming existing problems associated with traditionally used dyes, proteins and quantum dots. In this study, a new kind of hybrid NaYF4:Yb,Er/PLGA nanoparticles for efficient biolabeling were prepared through one-pot solvothermal synthesis route. Morphological and structural characteristics of the as-designed particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy, while their cytotoxicity as well as up-conversion (UC) labeling capability were tested in vitro toward human gingival cells (HGC) and oral squamous cell carcinoma (OSCC). The results revealed coexistence of the cubic (Fm-3m) and hexagonal (P6(3)/m) phase in spherical and irregularly shaped nanoparticles, respectively. PLGA [Poly(lactic-co-glycolic acid)] ligands attached at the surface of UCNPs particles provide their enhanced cellular uptake and enable high-quality cells imaging through a near-infrared (NIR) laser scanning microscopy (lambda(ex) = 980 nm). Moreover, the fact that NaYF4:Yb,Er/PLGA UCNPs show low cytotoxicity against HGC over the whole concentration range (10-50 mu g/mL) while a dose dependent viability of OSCC is obtained indicates that these might be a promising candidates for targeted cancer cell therapy.
PB  - Elsevier Science Bv, Amsterdam
T2  - Materials Science & Engineering C-Materials for Biological Applications
T1  - NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells
EP  - 605
SP  - 597
VL  - 91
DO  - 10.1016/j.msec.2018.05.081
ER  - 

@article{
author = "Mančić, Lidija and Đukić-Vuković, Aleksandra and Dinić, Ivana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Costa, Antonio Mario Leal Martins and Trišić, Dijana and Lazarević, Miloš and Mojović, Ljiljana and Milošević, Olivera",
year = "2018",
abstract = "Lanthanide-doped fluoride up-converting nanoparticles (UCNPs) represent the new class of imaging contrast agents which hold great potential for overcoming existing problems associated with traditionally used dyes, proteins and quantum dots. In this study, a new kind of hybrid NaYF4:Yb,Er/PLGA nanoparticles for efficient biolabeling were prepared through one-pot solvothermal synthesis route. Morphological and structural characteristics of the as-designed particles were obtained using X-ray powder diffraction (XRPD), scanning and transmission electron microscopy (SEM/TEM), energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy, while their cytotoxicity as well as up-conversion (UC) labeling capability were tested in vitro toward human gingival cells (HGC) and oral squamous cell carcinoma (OSCC). The results revealed coexistence of the cubic (Fm-3m) and hexagonal (P6(3)/m) phase in spherical and irregularly shaped nanoparticles, respectively. PLGA [Poly(lactic-co-glycolic acid)] ligands attached at the surface of UCNPs particles provide their enhanced cellular uptake and enable high-quality cells imaging through a near-infrared (NIR) laser scanning microscopy (lambda(ex) = 980 nm). Moreover, the fact that NaYF4:Yb,Er/PLGA UCNPs show low cytotoxicity against HGC over the whole concentration range (10-50 mu g/mL) while a dose dependent viability of OSCC is obtained indicates that these might be a promising candidates for targeted cancer cell therapy.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Materials Science & Engineering C-Materials for Biological Applications",
title = "NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells",
pages = "605-597",
volume = "91",
doi = "10.1016/j.msec.2018.05.081"
}

Mančić, L., Đukić-Vuković, A., Dinić, I., Nikolić, M. G., Rabasović, M. D., Krmpot, A., Costa, A. M. L. M., Trišić, D., Lazarević, M., Mojović, L.,& Milošević, O.. (2018). NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells. in Materials Science & Engineering C-Materials for Biological Applications
Elsevier Science Bv, Amsterdam., 91, 597-605.
https://doi.org/10.1016/j.msec.2018.05.081

Mančić L, Đukić-Vuković A, Dinić I, Nikolić MG, Rabasović MD, Krmpot A, Costa AMLM, Trišić D, Lazarević M, Mojović L, Milošević O. NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells. in Materials Science & Engineering C-Materials for Biological Applications. 2018;91:597-605.
doi:10.1016/j.msec.2018.05.081 .

Mančić, Lidija, Đukić-Vuković, Aleksandra, Dinić, Ivana, Nikolić, Marko G., Rabasović, Mihailo D., Krmpot, Aleksandar, Costa, Antonio Mario Leal Martins, Trišić, Dijana, Lazarević, Miloš, Mojović, Ljiljana, Milošević, Olivera, "NIR photo-driven upconversion in NaYF4:Yb,Er/PLGA particles for in vitro bioimaging of cancer cells" in Materials Science & Engineering C-Materials for Biological Applications, 91 (2018):597-605,
https://doi.org/10.1016/j.msec.2018.05.081 . .

TY  - CONF
AU  - Dinić, Ivana
AU  - Đukić-Vuković, Aleksandra
AU  - Mojović, Ljiljana
AU  - Nikolić, Marko G.
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Milošević, Olivera
AU  - Mančić, Lidija
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3486
AB  - There is a great technological interest in synthesis of lanthanide doped upconverting nanoparticles with specific morphological characteristics and efficient luminescence response suitable for biomedical use [1]. A conventional approach for generation of such particles comprises decomposition of organometallic compoundsin an oxygen-free environment and additional ligand exchange [2,3]. The biocompatible and water soluble NaYF4:Yb,Er"Chitosane particles used in this study were synthesized through facile one-pot hydrothermal synthesis and were characterized using X-ray powder diffraction (XRPD), Fourier-transform infrared (FTIR) spectroscopy, field emission scanning and transmission electron microscopy (FESEM and TEM) and photoluminesce measurement (PL). Due to the presence of the amino groups at their surface these particles exhibit excellent hydrophilic properties and low cytotoxicity against human gingival fibroblasts (HGF), which was proven by MTT assay. Furthermore, upon 980 nm laser irradiation the as-prepared particles were successfully used for in-vitro visualization of the primary cell cultures of head and neck squamous carcinoma cells (HNSCC). In a NaYF4:Yb,Er phase upconversion is enabled by the sequential absorption of two or more near-infrared photons by Yb3+ and subsequent energy transfer to the long-lived metastable electron states of Er3+ which produces luminescence emission at visible spectra after relaxation.
PB  - Belgrade : Institute of Physics Belgrade
C3  - Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers of the Six
T1  - One-step synthesis of NIR-responsive NaYF4:Yb,Er"Chitosane nanoparticles for biomedical application
EP  - 81
SP  - 81
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3486
ER  - 

@conference{
author = "Dinić, Ivana and Đukić-Vuković, Aleksandra and Mojović, Ljiljana and Nikolić, Marko G. and Rabasović, Mihailo D. and Krmpot, Aleksandar and Milošević, Olivera and Mančić, Lidija",
year = "2017",
abstract = "There is a great technological interest in synthesis of lanthanide doped upconverting nanoparticles with specific morphological characteristics and efficient luminescence response suitable for biomedical use [1]. A conventional approach for generation of such particles comprises decomposition of organometallic compoundsin an oxygen-free environment and additional ligand exchange [2,3]. The biocompatible and water soluble NaYF4:Yb,Er"Chitosane particles used in this study were synthesized through facile one-pot hydrothermal synthesis and were characterized using X-ray powder diffraction (XRPD), Fourier-transform infrared (FTIR) spectroscopy, field emission scanning and transmission electron microscopy (FESEM and TEM) and photoluminesce measurement (PL). Due to the presence of the amino groups at their surface these particles exhibit excellent hydrophilic properties and low cytotoxicity against human gingival fibroblasts (HGF), which was proven by MTT assay. Furthermore, upon 980 nm laser irradiation the as-prepared particles were successfully used for in-vitro visualization of the primary cell cultures of head and neck squamous carcinoma cells (HNSCC). In a NaYF4:Yb,Er phase upconversion is enabled by the sequential absorption of two or more near-infrared photons by Yb3+ and subsequent energy transfer to the long-lived metastable electron states of Er3+ which produces luminescence emission at visible spectra after relaxation.",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers of the Six",
title = "One-step synthesis of NIR-responsive NaYF4:Yb,Er"Chitosane nanoparticles for biomedical application",
pages = "81-81",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3486"
}

Dinić, I., Đukić-Vuković, A., Mojović, L., Nikolić, M. G., Rabasović, M. D., Krmpot, A., Milošević, O.,& Mančić, L.. (2017). One-step synthesis of NIR-responsive NaYF4:Yb,Er"Chitosane nanoparticles for biomedical application. in Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers of the Six
Belgrade : Institute of Physics Belgrade., 81-81.
https://hdl.handle.net/21.15107/rcub_technorep_3486

Dinić I, Đukić-Vuković A, Mojović L, Nikolić MG, Rabasović MD, Krmpot A, Milošević O, Mančić L. One-step synthesis of NIR-responsive NaYF4:Yb,Er"Chitosane nanoparticles for biomedical application. in Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers of the Six. 2017;:81-81.
https://hdl.handle.net/21.15107/rcub_technorep_3486 .

Dinić, Ivana, Đukić-Vuković, Aleksandra, Mojović, Ljiljana, Nikolić, Marko G., Rabasović, Mihailo D., Krmpot, Aleksandar, Milošević, Olivera, Mančić, Lidija, "One-step synthesis of NIR-responsive NaYF4:Yb,Er"Chitosane nanoparticles for biomedical application" in Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers of the Six (2017):81-81,
https://hdl.handle.net/21.15107/rcub_technorep_3486 .

TY  - CONF
AU  - Mančić, Lidija
AU  - Đukić-Vuković, Aleksandra
AU  - Mojović, Ljiljana
AU  - Rabasović, Mihailo D.
AU  - Krmpot, Aleksandar
AU  - Dinić, Ivana
AU  - Costa, Antonio Mario Leal Martins
AU  - Milošević, Olivera
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3488
AB  - For such purpose, Ln-UCNPs should have specific morphological characteristics and efficient luminescence response. In this work, a biocompatible and water dispersible NaYF4:Yb,Er"PLGA nanoparticles synthesized using a one-step hydrothermal synthesis were tested as fluorescent bio-labels of primary cell cultures obtained after passage of head and neck squamous carcinoma cells (HNSCC). Structural, morphological and optical properties of particles were obtained using X-ray powder diffraction (XRPD), field emission scanning and transmission electron microscopy (FESEM/TEM), energy dispersive X-ray (EDX), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy. The results revealed coexistence of the cubic (Fm-3m) and hexagonal (P63/m) phase in spherical and irregularly shaped nanoparticles, respectively. Moreover, preservation of the PLGA ligands at the particles surface facilitates their interactions with the cell membrane and provides permeation into cells. To asses a biological safety of their use, viability of human gingival fibroblasts (HFG) was additionally evaluated by a colorimetric MTT assay.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Applica
T1  - In-vitro visualization of primary tumor cells using up-conversion nanophosphors
EP  - 59
SP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3488
ER  - 

@conference{
author = "Mančić, Lidija and Đukić-Vuković, Aleksandra and Mojović, Ljiljana and Rabasović, Mihailo D. and Krmpot, Aleksandar and Dinić, Ivana and Costa, Antonio Mario Leal Martins and Milošević, Olivera",
year = "2017",
abstract = "For such purpose, Ln-UCNPs should have specific morphological characteristics and efficient luminescence response. In this work, a biocompatible and water dispersible NaYF4:Yb,Er"PLGA nanoparticles synthesized using a one-step hydrothermal synthesis were tested as fluorescent bio-labels of primary cell cultures obtained after passage of head and neck squamous carcinoma cells (HNSCC). Structural, morphological and optical properties of particles were obtained using X-ray powder diffraction (XRPD), field emission scanning and transmission electron microscopy (FESEM/TEM), energy dispersive X-ray (EDX), Fourier transform infrared (FTIR) and photoluminescence (PL) spectroscopy. The results revealed coexistence of the cubic (Fm-3m) and hexagonal (P63/m) phase in spherical and irregularly shaped nanoparticles, respectively. Moreover, preservation of the PLGA ligands at the particles surface facilitates their interactions with the cell membrane and provides permeation into cells. To asses a biological safety of their use, viability of human gingival fibroblasts (HFG) was additionally evaluated by a colorimetric MTT assay.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Applica",
title = "In-vitro visualization of primary tumor cells using up-conversion nanophosphors",
pages = "59-59",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3488"
}

Mančić, L., Đukić-Vuković, A., Mojović, L., Rabasović, M. D., Krmpot, A., Dinić, I., Costa, A. M. L. M.,& Milošević, O.. (2017). In-vitro visualization of primary tumor cells using up-conversion nanophosphors. in Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Applica
Belgrade : Serbian Ceramic Society., 59-59.
https://hdl.handle.net/21.15107/rcub_technorep_3488

Mančić L, Đukić-Vuković A, Mojović L, Rabasović MD, Krmpot A, Dinić I, Costa AMLM, Milošević O. In-vitro visualization of primary tumor cells using up-conversion nanophosphors. in Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Applica. 2017;:59-59.
https://hdl.handle.net/21.15107/rcub_technorep_3488 .

Mančić, Lidija, Đukić-Vuković, Aleksandra, Mojović, Ljiljana, Rabasović, Mihailo D., Krmpot, Aleksandar, Dinić, Ivana, Costa, Antonio Mario Leal Martins, Milošević, Olivera, "In-vitro visualization of primary tumor cells using up-conversion nanophosphors" in Program and the Book of Abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Applica (2017):59-59,
https://hdl.handle.net/21.15107/rcub_technorep_3488 .

TY  - JOUR
AU  - Bukara, Katarina
AU  - Jovanić, Svetlana
AU  - Drvenica, Ivana
AU  - Stančić, Ana
AU  - Ilić, Vesna Lj.
AU  - Rabasović, Mihailo D.
AU  - Pantelić, Dejan
AU  - Jelenković, Branislav
AU  - Bugarski, Branko
AU  - Krmpot, Aleksandar
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3747
AB  - The present study describes utilization of two photon excitation fluorescence (2PE) microscopy for visualization of the hemoglobin in human and porcine erythrocytes and their empty membranes (i.e., ghosts). High-quality, label-and fixation-free visualization of hemoglobin was achieved at excitation wavelength 730 nm by detecting visible autofluorescence. Localization in the suspension and spatial distribution (i.e., mapping) of residual hemoglobin in erythrocyte ghosts has been resolved by 2PE. Prior to the 2PE mapping, the presence of residual hemoglobin in the bulk suspension of erythrocyte ghosts was confirmed by cyanmethemoglobin assay. 2PE analysis revealed that the distribution of hemoglobin in intact erythrocytes follows the cells' shape. Two types of erythrocytes, human and porcine, characterized with discocyte and echinocyte morphology, respectively, showed significant differences in hemoglobin distribution. The 2PE images have revealed that despite an extensive washing out procedure after gradual hypotonic hemolysis, a certain amount of hemoglobin localized on the intracellular side always remains bound to the membrane and cannot be eliminated. The obtained results open the possibility to use 2PE microscopy to examine hemoglobin distribution in erythrocytes and estimate the purity level of erythrocyte ghosts in biotechnological processes.
PB  - Spie-Soc Photo-Optical Instrumentation Engineers, Bellingham
T2  - Journal of Biomedical Optics
T1  - Mapping of hemoglobin in erythrocytes and erythrocyte ghosts using two photon excitation fluorescence microscopy
IS  - 2
VL  - 22
DO  - 10.1117/1.JBO.22.2.026003
ER  - 

@article{
author = "Bukara, Katarina and Jovanić, Svetlana and Drvenica, Ivana and Stančić, Ana and Ilić, Vesna Lj. and Rabasović, Mihailo D. and Pantelić, Dejan and Jelenković, Branislav and Bugarski, Branko and Krmpot, Aleksandar",
year = "2017",
abstract = "The present study describes utilization of two photon excitation fluorescence (2PE) microscopy for visualization of the hemoglobin in human and porcine erythrocytes and their empty membranes (i.e., ghosts). High-quality, label-and fixation-free visualization of hemoglobin was achieved at excitation wavelength 730 nm by detecting visible autofluorescence. Localization in the suspension and spatial distribution (i.e., mapping) of residual hemoglobin in erythrocyte ghosts has been resolved by 2PE. Prior to the 2PE mapping, the presence of residual hemoglobin in the bulk suspension of erythrocyte ghosts was confirmed by cyanmethemoglobin assay. 2PE analysis revealed that the distribution of hemoglobin in intact erythrocytes follows the cells' shape. Two types of erythrocytes, human and porcine, characterized with discocyte and echinocyte morphology, respectively, showed significant differences in hemoglobin distribution. The 2PE images have revealed that despite an extensive washing out procedure after gradual hypotonic hemolysis, a certain amount of hemoglobin localized on the intracellular side always remains bound to the membrane and cannot be eliminated. The obtained results open the possibility to use 2PE microscopy to examine hemoglobin distribution in erythrocytes and estimate the purity level of erythrocyte ghosts in biotechnological processes.",
publisher = "Spie-Soc Photo-Optical Instrumentation Engineers, Bellingham",
journal = "Journal of Biomedical Optics",
title = "Mapping of hemoglobin in erythrocytes and erythrocyte ghosts using two photon excitation fluorescence microscopy",
number = "2",
volume = "22",
doi = "10.1117/1.JBO.22.2.026003"
}

Bukara, K., Jovanić, S., Drvenica, I., Stančić, A., Ilić, V. Lj., Rabasović, M. D., Pantelić, D., Jelenković, B., Bugarski, B.,& Krmpot, A.. (2017). Mapping of hemoglobin in erythrocytes and erythrocyte ghosts using two photon excitation fluorescence microscopy. in Journal of Biomedical Optics
Spie-Soc Photo-Optical Instrumentation Engineers, Bellingham., 22(2).
https://doi.org/10.1117/1.JBO.22.2.026003

Bukara K, Jovanić S, Drvenica I, Stančić A, Ilić VL, Rabasović MD, Pantelić D, Jelenković B, Bugarski B, Krmpot A. Mapping of hemoglobin in erythrocytes and erythrocyte ghosts using two photon excitation fluorescence microscopy. in Journal of Biomedical Optics. 2017;22(2).
doi:10.1117/1.JBO.22.2.026003 .

Bukara, Katarina, Jovanić, Svetlana, Drvenica, Ivana, Stančić, Ana, Ilić, Vesna Lj., Rabasović, Mihailo D., Pantelić, Dejan, Jelenković, Branislav, Bugarski, Branko, Krmpot, Aleksandar, "Mapping of hemoglobin in erythrocytes and erythrocyte ghosts using two photon excitation fluorescence microscopy" in Journal of Biomedical Optics, 22, no. 2 (2017),
https://doi.org/10.1117/1.JBO.22.2.026003 . .