TY  - JOUR
AU  - Lazarević, J. J.
AU  - Ralević, U.
AU  - Kukolj, Tamara
AU  - Bugarski, Diana
AU  - Lazarević, N.
AU  - Bugarski, Branko
AU  - Popović, Z., V
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4213
AB  - In investigation of (patho)physiological processes, cells represent frequently used analyte as an exceptional source of information. However, spectroscopic analysis of live cells is still very seldom in clinics, as well as in research studies. Among others, the reasons are long acquisition time during which autolysis process is activated, necessity of specified technical equipment, and inability to perform analysis in a moment of sample preparation. Hence, an optimal method of preserving cells in the existing state is of extreme importance, having in mind that selection of fixative is cell lineage dependent. In this study, two commonly used chemical fixatives, formaldehyde and methanol, are used for preserving primary mesenchymal stem cells extracted from periodontal ligament, which are valuable cell source for reconstructive dentistry. By means of Raman spectroscopy, cell samples were probed and the impact of these fixatives on their Raman response was analyzed and compared. Different chemical mechanisms are the core processes of formaldehyde and methanol fixation and certain Raman bands are shifted and/or of changed intensity when Raman spectra of cells fixed in that manner are compared. In order to get clearer picture, comprehensive statistical analysis was performed.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
T1  - Influence of chemical fixation process on primary mesenchymal stem cells evidenced by Raman spectroscopy
EP  - 178
SP  - 173
VL  - 216
DO  - 10.1016/j.saa.2019.03.012
ER  - 

@article{
author = "Lazarević, J. J. and Ralević, U. and Kukolj, Tamara and Bugarski, Diana and Lazarević, N. and Bugarski, Branko and Popović, Z., V",
year = "2019",
abstract = "In investigation of (patho)physiological processes, cells represent frequently used analyte as an exceptional source of information. However, spectroscopic analysis of live cells is still very seldom in clinics, as well as in research studies. Among others, the reasons are long acquisition time during which autolysis process is activated, necessity of specified technical equipment, and inability to perform analysis in a moment of sample preparation. Hence, an optimal method of preserving cells in the existing state is of extreme importance, having in mind that selection of fixative is cell lineage dependent. In this study, two commonly used chemical fixatives, formaldehyde and methanol, are used for preserving primary mesenchymal stem cells extracted from periodontal ligament, which are valuable cell source for reconstructive dentistry. By means of Raman spectroscopy, cell samples were probed and the impact of these fixatives on their Raman response was analyzed and compared. Different chemical mechanisms are the core processes of formaldehyde and methanol fixation and certain Raman bands are shifted and/or of changed intensity when Raman spectra of cells fixed in that manner are compared. In order to get clearer picture, comprehensive statistical analysis was performed.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy",
title = "Influence of chemical fixation process on primary mesenchymal stem cells evidenced by Raman spectroscopy",
pages = "178-173",
volume = "216",
doi = "10.1016/j.saa.2019.03.012"
}

Lazarević, J. J., Ralević, U., Kukolj, T., Bugarski, D., Lazarević, N., Bugarski, B.,& Popović, Z., V.. (2019). Influence of chemical fixation process on primary mesenchymal stem cells evidenced by Raman spectroscopy. in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
Pergamon-Elsevier Science Ltd, Oxford., 216, 173-178.
https://doi.org/10.1016/j.saa.2019.03.012

Lazarević JJ, Ralević U, Kukolj T, Bugarski D, Lazarević N, Bugarski B, Popović ZV. Influence of chemical fixation process on primary mesenchymal stem cells evidenced by Raman spectroscopy. in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy. 2019;216:173-178.
doi:10.1016/j.saa.2019.03.012 .

Lazarević, J. J., Ralević, U., Kukolj, Tamara, Bugarski, Diana, Lazarević, N., Bugarski, Branko, Popović, Z., V, "Influence of chemical fixation process on primary mesenchymal stem cells evidenced by Raman spectroscopy" in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 216 (2019):173-178,
https://doi.org/10.1016/j.saa.2019.03.012 . .

TY  - JOUR
AU  - Lazarević, J. J.
AU  - Kukolj, Tamara
AU  - Bugarski, Diana
AU  - Lazarević, N.
AU  - Bugarski, Branko
AU  - Popović, Z., V
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4214
AB  - We have employed micro-Raman spectroscopy to get insight into intrinsic biomolecular profile of individual mesenchymal stem cell isolated from periodontal ligament. Furthermore, these cells were stimulated towards adipogenic, chondrogenic, and osteogenic lineages and their status of differentiation was assessed using micro-Raman spectroscopy. In both cases, glass coverslips were used as substrates, due to their wide availability and cost effectiveness. In all sample groups, the same type of behavior was observed, manifested as changes in Raman spectra: the increase of relative intensity of protein/lipid bands and decrease of nucleic acid bands. Comprehensive statistical analysis in the form of principal component analysis was performed, which revealed noticeable grouping of cells with the similar features. Despite the inhomogeneity of primary stem cells and their differentiated lineages, we demonstrated that micro-Raman spectroscopy is sufficient for distinguishing cells' status, which can be valuable for medical and clinical application.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
T1  - Probing primary mesenchymal stem cells differentiation status by micro-Raman spectroscopy
EP  - 390
SP  - 384
VL  - 213
DO  - 10.1016/j.saa.2019.01.069
ER  - 

@article{
author = "Lazarević, J. J. and Kukolj, Tamara and Bugarski, Diana and Lazarević, N. and Bugarski, Branko and Popović, Z., V",
year = "2019",
abstract = "We have employed micro-Raman spectroscopy to get insight into intrinsic biomolecular profile of individual mesenchymal stem cell isolated from periodontal ligament. Furthermore, these cells were stimulated towards adipogenic, chondrogenic, and osteogenic lineages and their status of differentiation was assessed using micro-Raman spectroscopy. In both cases, glass coverslips were used as substrates, due to their wide availability and cost effectiveness. In all sample groups, the same type of behavior was observed, manifested as changes in Raman spectra: the increase of relative intensity of protein/lipid bands and decrease of nucleic acid bands. Comprehensive statistical analysis in the form of principal component analysis was performed, which revealed noticeable grouping of cells with the similar features. Despite the inhomogeneity of primary stem cells and their differentiated lineages, we demonstrated that micro-Raman spectroscopy is sufficient for distinguishing cells' status, which can be valuable for medical and clinical application.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy",
title = "Probing primary mesenchymal stem cells differentiation status by micro-Raman spectroscopy",
pages = "390-384",
volume = "213",
doi = "10.1016/j.saa.2019.01.069"
}

Lazarević, J. J., Kukolj, T., Bugarski, D., Lazarević, N., Bugarski, B.,& Popović, Z., V.. (2019). Probing primary mesenchymal stem cells differentiation status by micro-Raman spectroscopy. in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
Pergamon-Elsevier Science Ltd, Oxford., 213, 384-390.
https://doi.org/10.1016/j.saa.2019.01.069

Lazarević JJ, Kukolj T, Bugarski D, Lazarević N, Bugarski B, Popović ZV. Probing primary mesenchymal stem cells differentiation status by micro-Raman spectroscopy. in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy. 2019;213:384-390.
doi:10.1016/j.saa.2019.01.069 .

Lazarević, J. J., Kukolj, Tamara, Bugarski, Diana, Lazarević, N., Bugarski, Branko, Popović, Z., V, "Probing primary mesenchymal stem cells differentiation status by micro-Raman spectroscopy" in Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 213 (2019):384-390,
https://doi.org/10.1016/j.saa.2019.01.069 . .

TY  - JOUR
AU  - Trivanović, Drenka
AU  - Drvenica, Ivana
AU  - Kukolj, Tamara
AU  - Obradović, Hristina
AU  - Okić-Đorđević, Ivana
AU  - Mojsilović, Slavko
AU  - Krstić, Jelena
AU  - Bugarski, Branko
AU  - Jauković, Aleksandra
AU  - Bugarski, Diana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3761
AB  - Adipose tissue (AT) homeostasis and expansion are dependent on complex crosstalk between resident adipose stromal/stem cells (ASCs) and AT extracellular matrix (ECM). Although adipose tissue ECM (atECM) is one of the key players in the stem cell niche, data on bidirectional interaction of ASCs and atECM are still scarce. Here, we investigated how atECM guides ASCs' differentiation. atECM altered shape and cytoskeleton organization of ASCs without changing their proliferation, beta-galactosidase activity and adhesion. Cytoskeleton modifications occurred due to fostered parallel organization of F-actin and elevated expression of Vimentin in ASCs. After seven-day cultivation, atECM impaired osteogenesis of ASCs, simultaneously decreasing expression of Runx2. In addition, atECM accelerated early adipogenesis concomitantly with altered Vimentin organization in ASCs, slightly increasing PPAR, while elevated Adiponectin and Vimentin mRNA expression. Early adipogenesis triggered by atECM was followed by upregulated mitochondrial activity and Sirtuin 1 (SIRT1) expression in ASCs. Proadipogenic events induced by atECM were mediated by SIRT1, indicating the supportive role of atECM in adipogenesis-related metabolic state of ASCs. These results provide a closer look at the effects of atECM on ASC physiology and may support the advancement of engineering design in soft tissue reconstruction and fundamental research of AT.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Artificial Cells Nanomedicine and Biotechnology
T1  - Adipoinductive effect of extracellular matrix involves cytoskeleton changes and SIRT1 activity in adipose tissue stem/stromal cells
EP  - S382
SP  - S370
VL  - 46
DO  - 10.1080/21691401.2018.1494183
ER  - 

@article{
author = "Trivanović, Drenka and Drvenica, Ivana and Kukolj, Tamara and Obradović, Hristina and Okić-Đorđević, Ivana and Mojsilović, Slavko and Krstić, Jelena and Bugarski, Branko and Jauković, Aleksandra and Bugarski, Diana",
year = "2018",
abstract = "Adipose tissue (AT) homeostasis and expansion are dependent on complex crosstalk between resident adipose stromal/stem cells (ASCs) and AT extracellular matrix (ECM). Although adipose tissue ECM (atECM) is one of the key players in the stem cell niche, data on bidirectional interaction of ASCs and atECM are still scarce. Here, we investigated how atECM guides ASCs' differentiation. atECM altered shape and cytoskeleton organization of ASCs without changing their proliferation, beta-galactosidase activity and adhesion. Cytoskeleton modifications occurred due to fostered parallel organization of F-actin and elevated expression of Vimentin in ASCs. After seven-day cultivation, atECM impaired osteogenesis of ASCs, simultaneously decreasing expression of Runx2. In addition, atECM accelerated early adipogenesis concomitantly with altered Vimentin organization in ASCs, slightly increasing PPAR, while elevated Adiponectin and Vimentin mRNA expression. Early adipogenesis triggered by atECM was followed by upregulated mitochondrial activity and Sirtuin 1 (SIRT1) expression in ASCs. Proadipogenic events induced by atECM were mediated by SIRT1, indicating the supportive role of atECM in adipogenesis-related metabolic state of ASCs. These results provide a closer look at the effects of atECM on ASC physiology and may support the advancement of engineering design in soft tissue reconstruction and fundamental research of AT.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Artificial Cells Nanomedicine and Biotechnology",
title = "Adipoinductive effect of extracellular matrix involves cytoskeleton changes and SIRT1 activity in adipose tissue stem/stromal cells",
pages = "S382-S370",
volume = "46",
doi = "10.1080/21691401.2018.1494183"
}

Trivanović, D., Drvenica, I., Kukolj, T., Obradović, H., Okić-Đorđević, I., Mojsilović, S., Krstić, J., Bugarski, B., Jauković, A.,& Bugarski, D.. (2018). Adipoinductive effect of extracellular matrix involves cytoskeleton changes and SIRT1 activity in adipose tissue stem/stromal cells. in Artificial Cells Nanomedicine and Biotechnology
Taylor & Francis Ltd, Abingdon., 46, S370-S382.
https://doi.org/10.1080/21691401.2018.1494183

Trivanović D, Drvenica I, Kukolj T, Obradović H, Okić-Đorđević I, Mojsilović S, Krstić J, Bugarski B, Jauković A, Bugarski D. Adipoinductive effect of extracellular matrix involves cytoskeleton changes and SIRT1 activity in adipose tissue stem/stromal cells. in Artificial Cells Nanomedicine and Biotechnology. 2018;46:S370-S382.
doi:10.1080/21691401.2018.1494183 .

Trivanović, Drenka, Drvenica, Ivana, Kukolj, Tamara, Obradović, Hristina, Okić-Đorđević, Ivana, Mojsilović, Slavko, Krstić, Jelena, Bugarski, Branko, Jauković, Aleksandra, Bugarski, Diana, "Adipoinductive effect of extracellular matrix involves cytoskeleton changes and SIRT1 activity in adipose tissue stem/stromal cells" in Artificial Cells Nanomedicine and Biotechnology, 46 (2018):S370-S382,
https://doi.org/10.1080/21691401.2018.1494183 . .