Folia Biologica最新文献

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Identification of Schizosaccharomyces pombe ird Mutants Resistant to Glucose Suppression and Oxidative Stress. 抗葡萄糖抑制和氧化应激的裂糖酵母的鉴定。
IF 1.1 4区 医学
Folia Biologica Pub Date : 2021-01-01 DOI: 10.14712/fb2021067050163
M Yilmazer, B Bayrak, B Kartal, S K Uzuner, B Palabiyik
{"title":"Identification of Schizosaccharomyces pombe ird Mutants Resistant to Glucose Suppression and Oxidative Stress.","authors":"M Yilmazer, B Bayrak, B Kartal, S K Uzuner, B Palabiyik","doi":"10.14712/fb2021067050163","DOIUrl":"https://doi.org/10.14712/fb2021067050163","url":null,"abstract":"<p><p>Glucose is both the favourite carbon and energy source and acts as a hormone that plays a regulating role in many biological processes. Calorie restriction extends the lifespan in many organisms, including Schizosaccharomyces pombe, while uptake of high glucose leads to undesired results, such as diabetes and aging. In this study, sequence analysis of Schizosaccharomyces pombe ird5 and ird11 mutants was performed using next-generation sequencing techniques and a total of 20 different mutations were detected. ird11 is resistant to oxidative stress without calorie restriction, whereas ird5 displays an adaptive response against oxidative stress. We selected nine candidate mutations located in the non-coding (6) and coding (3) region among a total of 20 different mutations. The nine candidate mutations, which are thought to be responsible for ird5 and ird11 mutant phenotypes, were investigated via forward and backward mutations by using various cloning techniques. The results of this study provide report-like information that will contribute to understanding the relationship between glucose sensing/ signalling and oxidative stress response components.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"67 5-6","pages":"163-173"},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142828163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genistein Induces Bcl-2 Expression in Human Dermal Microvascular Endothelial Cells: a Short Report. 染料木黄酮诱导人皮肤微血管内皮细胞Bcl-2表达
IF 1.1 4区 医学
Folia Biologica Pub Date : 2020-01-01 DOI: 10.14712/fb2020066040142
V Lachova, P Mitrengova, N Melegova, K Smetana, P Gal
{"title":"Genistein Induces Bcl-2 Expression in Human Dermal Microvascular Endothelial Cells: a Short Report.","authors":"V Lachova, P Mitrengova, N Melegova, K Smetana, P Gal","doi":"10.14712/fb2020066040142","DOIUrl":"10.14712/fb2020066040142","url":null,"abstract":"<p><p>It has been shown previously that oestradiol protects the vascular network, leading to increased skin flap viability associated with Bcl-2, VEGF and FGF-2 up-regulation. We have shown that genistein, a natural selective oestrogen receptor modulator, also increases skin flap viability in rats and induces Bcl-2 expression in human umbilical vein endothelial cells. In the present study we aimed to answer the question whether genistein increases expression of Bcl-2, a potent anti-apoptotic protein, in human dermal microvascular endothelial cells (HMVEC-d) as well. Our results showed that administration of genistein induces Bcl-2 expression in a concentration-dependent manner. Cell co-treatment with genistein and anti-ER compounds (MPP, PHTPP, ICI, G-15) diminished the observed positive effect of genistein on Bcl-2 expression. The decrease in Bcl-2 expression in HMVEC-d was most prominent after co-treatment with ICI (nuclear ER antagonist/ GPR30 agonist) and PHTPP (selective ER-β antagonist). In conclusion, genistein increases Bcl-2 expression in HMVEC-d, contributing to its protective effect on the skin flap viability. However, the question whether the mechanism is ER-specific (via ER-β) has to be answered in further studies using a model of gene silencing or genetically modified cells.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 4","pages":"142-147"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25500875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Platelet Extracellular Vesicles in Cord Blood of Term and Preterm Newborns Assayed by Flow Cytometry: the Effect of Delay in Sample Preparation and of Sample Freezing. 流式细胞术检测足月及早产新生儿脐带血血小板细胞外囊泡:样品制备和样品冷冻延迟的影响。
IF 1.1 4区 医学
Folia Biologica Pub Date : 2020-01-01 DOI: 10.14712/fb2020066050204
A Hujacova, T Brozova, T Mosko, M Kostelanska, Z Stranak, K Holada
{"title":"Platelet Extracellular Vesicles in Cord Blood of Term and Preterm Newborns Assayed by Flow Cytometry: the Effect of Delay in Sample Preparation and of Sample Freezing.","authors":"A Hujacova, T Brozova, T Mosko, M Kostelanska, Z Stranak, K Holada","doi":"10.14712/fb2020066050204","DOIUrl":"10.14712/fb2020066050204","url":null,"abstract":"<p><p>Plasma levels of circulating platelet extracellular vesicles (PEVs) are an emerging marker of platelet activation, thrombosis, inflammation, and endothelial dysfunction. Analysis of PEVs in cord blood of preterm newborns may reflect the underlying pathology and possibly serve as a new diagnostic and prognostic tool. However, collection, preparation and analysis of cord blood samples in clinical settings is a logistically complex process. We have studied the effect of delay in sample preparation and sample freezing on the PEV analysis by flow cytometry. PEVs in the cord blood plasma were identified after double labelling with monoclonal antibodies CD36+CD41 or CD41+CD62. Both, the delay and the freezing significantly affected the count and often also fluorescence of the detected PEVs. Additionally, our pilot study utilizing fresh cord blood samples of term and preterm newborns demonstrated significantly decreased CD36 and CD62 PEV fluorescence in preterm newborns. Our data highlight the importance of pre-analytical steps in the analysis of cord blood PEVs and suggest that not only the count, but also the level of PEV fluorescence may have possible diagnostic potential.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 5-6","pages":"204-211"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39062387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Von Willebrand Factor Antigen Plasma Concentration: a Monitoring Marker in the Treatment of Aortic and Mitral Valve Diseases. 血管性血友病因子抗原血浆浓度:主动脉瓣和二尖瓣疾病治疗的监测指标。
IF 0.6 4区 医学
Folia Biologica Pub Date : 2020-01-01
M A Perrone, F G Viola, M Minieri, S Caporali, A Copponi, G Sancesario, S Angeletti, R Massoud, F Romeo, S Bernardini, A Terrinoni
{"title":"The Von Willebrand Factor Antigen Plasma Concentration: a Monitoring Marker in the Treatment of Aortic and Mitral Valve Diseases.","authors":"M A Perrone,&nbsp;F G Viola,&nbsp;M Minieri,&nbsp;S Caporali,&nbsp;A Copponi,&nbsp;G Sancesario,&nbsp;S Angeletti,&nbsp;R Massoud,&nbsp;F Romeo,&nbsp;S Bernardini,&nbsp;A Terrinoni","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Von Willebrand disease is a commonly inherited bleeding disorder caused by defects of von Willebrand factor (vWF). In the most common valve diseases, aortic valve stenosis (AVS) and mitral valve regurgitation (MVR), a bleeding tendency has been described in a number of patients. This has been associated to a high turbulence of blood flow through the compromised valve, promoting degradation of vWF with loss of high-molecular-weight multimers of vWF (HMWM), leading to an acquired von Willebrand syndrome (AvWS). We analysed three groups of patients, one affected by AVS, treated with transcatheter aortic valve implantation (TAVI), the second group of patients affected by MVR, treated with Mitraclip® mitral valve repair. The third group was represented by patients also affected by AVS, but not eligible for TAVI and treated with standard surgery. A fourth group of patients that underwent percutaneous coronary intervention (PCI) with stenting was used as a control. Our results demonstrated that the level of vWF measured as antigen concentration (vWF:Ag) increases in all cohorts of patients after treatment, while in control PCI patients, no modification of vWF:Ag has been registered. Western blot analysis showed only a quantitative loss of vWF in the pre-treatment time, but without significant HMWM modification. The monitoring of the vWF:Ag concentration, but not the quality of HMWM, can indicate the status of blood flow in the treated patients, thus introducing the possibility of using the vWF antigen detection in monitoring the status of replaced or repaired valves.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 4","pages":"133-141"},"PeriodicalIF":0.6,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25500874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comprehensive Analysis of PTEN in Primary Cutaneous Melanoma. 原发性皮肤黑色素瘤中PTEN的综合分析。
IF 1.1 4区 医学
Folia Biologica Pub Date : 2020-01-01 DOI: 10.14712/fb2020066010007
K Němejcová, P Dundr, R Jakša, M Bártů, I Stružinská, J Hojný, N Hájková, O Kodet
{"title":"Comprehensive Analysis of PTEN in Primary Cutaneous Melanoma.","authors":"K Němejcová, P Dundr, R Jakša, M Bártů, I Stružinská, J Hojný, N Hájková, O Kodet","doi":"10.14712/fb2020066010007","DOIUrl":"10.14712/fb2020066010007","url":null,"abstract":"<p><p>Phosphatase and tensin homologue (PTEN) is a tumour suppressor gene implicated in tumorigenesis of melanoma, with distinct cytoplasmic and nuclear functions. Cytoplasmic PTEN negatively regulates the PI3K/AKT/mTOR signalling pathway, while nuclear PTEN works as a tumour suppressor. Clinical data suggest that the loss of PTEN function in melanoma is associated with aggressive tumour behaviour. We performed a comprehensive analysis of PTEN in 112 primary cutaneous melanomas including immunohistochemical (IHC), fluorescent in situ hybridization (FISH), next-generation sequencing (NGS), and epigenetic analysis. The goal of our study was to: (a) correlate PTEN expression with selected clinico-pathological variables, and assess its prognostic significance; (b) correlate molecular aberrations with PTEN expression to consider the utility of immunohistochemical analysis of PTEN protein expression for screening PTEN genetic alterations; (c) review the literature and evaluate the PTEN expression level in melanoma with respect to possible therapeutic targeting. Our results showed that PTEN molecular alterations were present in 4/20 (20 %) cases with a loss of expression, 3/11 (27 %) cases with clonal-like expression, and 1/81 (1 %) cases with positive PTEN expression. No PTEN promoter methylation was found in any of the cases. Even though the value of our observation is limited by the low number of cases fully evaluated by IHC (112 cases), FISH (19 cases) and NGS (30 cases), our data suggest that IHC is not an appropriate method for the screening of PTEN genetic alterations. Our survival analysis suggests that patients with positive cytoplasmic PTEN expression show better disease-free survival (P < 0.05).</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 1","pages":"7-16"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38021794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kaempferol Induces Cell Death in A2780 Ovarian Cancer Cells and Increases Their Sensitivity to Cisplatin by Activation of Cytotoxic Endoplasmic Reticulum-Mediated Autophagy and Inhibition of Protein Kinase B. 山奈酚通过激活细胞毒性内质网介导的自噬和抑制蛋白激酶B诱导A2780卵巢癌细胞死亡并增加其对顺铂的敏感性。
IF 1.1 4区 医学
Folia Biologica Pub Date : 2020-01-01 DOI: 10.14712/fb2020066010036
A F El-Kott, A A Shati, M A Al-Kahtani, S A Alharbi
{"title":"Kaempferol Induces Cell Death in A2780 Ovarian Cancer Cells and Increases Their Sensitivity to Cisplatin by Activation of Cytotoxic Endoplasmic Reticulum-Mediated Autophagy and Inhibition of Protein Kinase B.","authors":"A F El-Kott, A A Shati, M A Al-Kahtani, S A Alharbi","doi":"10.14712/fb2020066010036","DOIUrl":"10.14712/fb2020066010036","url":null,"abstract":"<p><p>This study investigated whether kaempferol could inhibit ovarian cancer (OC) by activation of endoplasmic reticulum (ER) stress and autophagy, and tested its effect on the sensitivity of OC cells to cisplatin (cis-diamminedichloroplatinum, DPP). To study the effect of kaempferol on activation of ER stress and autophagy and find out whether its mechanism of action involves calcium (Ca2+), A2780 OC cells were cultured in DMEM/F12 for 24 h with or without kaempferol (40 μmol/l) in the presence or absence of autophagy or ER stress inhibitors or a calcium chelator. To study the effect of kaempferol on the sensitivity of OC cells to DPP and the potential involvement of modulation of protein kinase B (Akt) expression, A2780 OC were incubated with kaempferol and increasing concentrations of DPP (0-20 μmol/l) and then with kaempferol at its predetermined IC50 (6.8 μmol/l). Compared to control cells, kaempferol increased cell apoptosis (158 %) and decreased viability (53.17 %) and proliferation (49.17 %) of A2780 OC cells. Concomitantly, it increased the protein levels of GRP78, PERK, ATF6, IRE-1, LC3II, beclin 1, and caspase 4, thus suggesting activation of cytotoxic autophagy. This was mediated by increasing intracellular Ca+2 levels. In addition, kaempferol increased the sensitivity of A2780 cells to DPP (IC50 from 6.867 ± 0.99 to 3.73 ± 0.59 μmol/l) by decreasing the protein levels of p-Akt (0.31 ± 0.09 vs 0.12 ± 0.005). In conclusion, the findings of this study encourage the use of kaempferol alone or in combination with DPP to inhibit tumorigenesis of ovarian cells.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 1","pages":"36-46"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38021797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
T-lymphopoiesis is Severely Compromised in Ubiquitin-Green Fluorescent Protein Transgenic Mice. 泛素绿色荧光蛋白转基因小鼠t淋巴功能严重受损
IF 1.1 4区 医学
Folia Biologica Pub Date : 2020-01-01 DOI: 10.14712/fb2020066020047
K Faltusová, M Báječný, T Heizer, P Páral, E Nečas
{"title":"T-lymphopoiesis is Severely Compromised in Ubiquitin-Green Fluorescent Protein Transgenic Mice.","authors":"K Faltusová, M Báječný, T Heizer, P Páral, E Nečas","doi":"10.14712/fb2020066020047","DOIUrl":"10.14712/fb2020066020047","url":null,"abstract":"<p><p>Tagging cells of experimental organisms with genetic markers is commonly used in biomedical research. Insertion of artificial gene constructs can be highly beneficial for research as long as this tagging is functionally neutral and does not alter the tissue function. The transgenic UBC-GFP mouse has been recently found to be questionable in this respect, due to a latent stem cell defect compromising its lymphopoiesis and significantly influencing the results of competitive transplantation assays. In this study, we show that the stem cell defect present in UBC-GFP mice negatively affects T-lymphopoiesis significantly more than B-lymphopoiesis. The production of granulocytes is not negatively affected. The defect in T-lymphopoiesis causes a low total number of white blood cells in the peripheral blood of UBC-GFP mice which, together with the lower lymphoid/myeloid ratio in nucleated blood cells, is the only abnormal phenotype in untreated UBCGFP mice to have been found to date. The defective lymphopoiesis in UBC-GFP mice can be repaired by transplantation of congenic wild-type bone marrow cells, which then compensate for the insufficient production of T cells. Interestingly, the wild-type branch of haematopoiesis in chimaeric UBC-GFP/wild-type mice was more active in lymphopoiesis, and particularly towards production of T cells, compared to the lymphopoiesis in normal wild-type donors.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 2","pages":"47-59"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38315015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Changes of Hippocampal Noradrenergic Capacity in Stress Condition. 应激状态下海马去甲肾上腺素能能力的变化。
IF 1.1 4区 医学
Folia Biologica Pub Date : 2020-01-01 DOI: 10.14712/fb2020066020081
L Gavrilović, N Popović, V Stojiljković, S Pejić, A Todorović, I Pavlović, S B Pajović
{"title":"Changes of Hippocampal Noradrenergic Capacity in Stress Condition.","authors":"L Gavrilović, N Popović, V Stojiljković, S Pejić, A Todorović, I Pavlović, S B Pajović","doi":"10.14712/fb2020066020081","DOIUrl":"10.14712/fb2020066020081","url":null,"abstract":"<p><p>This study aimed to investigate the effects of chronic restraint stress (CRS) on the protein levels of dopamine-β-hydroxylase (DBH), noradrenaline transporter (NET), vesicular monoamine transporter 2 (VMAT2) and brain-derived neurotrophic factor (BDNF), as well as the concentration of noradrenaline (NA) in the rat hippocampus. The investigated parameters were quantified by Western blot analyses and ELISA kits. We found that CRS increased the protein levels of DBH by 30 %, VMAT2 by 11 %, BDNF by 11 % and the concentration of NA by 104 %, but decreased the protein levels of NET by 16 % in the hippocampus of chronically stressed rats. The molecular mechanisms by which CRS increased the hippocampal NA level are an important adaptive phenomenon of the noradrenergic system in the stress condition.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 2","pages":"81-84"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38411129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hereditary Haemorrhagic Telangiectasia (HHT) Marked by ACVRL1C1120T Variant Displays Hypopigmented Naevi and Frequent Bleeding Episodes if CYP2C9 Co-Mutated: Clinical Notes & Rationale of Patient Registry. ACVRL1C1120T变异标记的遗传性出血性毛细血管扩张症(HHT),如果CYP2C9共突变,则显示Naevi色素降低和频繁出血:临床记录和患者登记的基本原理
IF 1.1 4区 医学
Folia Biologica Pub Date : 2020-01-01 DOI: 10.14712/fb2020066010001
L Minarik, K Vargova, N Dusilkova, V Kulvait, A Jonasova, O Kodet, T Stopka
{"title":"Hereditary Haemorrhagic Telangiectasia (HHT) Marked by ACVRL1C1120T Variant Displays Hypopigmented Naevi and Frequent Bleeding Episodes if CYP2C9 Co-Mutated: Clinical Notes & Rationale of Patient Registry.","authors":"L Minarik, K Vargova, N Dusilkova, V Kulvait, A Jonasova, O Kodet, T Stopka","doi":"10.14712/fb2020066010001","DOIUrl":"10.14712/fb2020066010001","url":null,"abstract":"<p><p>Hereditary haemorrhagic telangiectasia (HHT) exhibits considerable phenotypic heterogeneity. Therefore, precise mutation screening and evaluation of patient risk must be determined in every HHT family. We present an HHT-2 case with an initial life-threatening bleeding episode that led to identification of a relatively large HHT family. Exome sequencing of the family members determined HHT-associated ACVRL1C1120T variant resulting in Arg374Trp substitution at the Ser/Thr-kinase domain region. The affected members display typical epistaxis symptomatology from early childhood resulting in sideropoenia. In addition, the HHT patients also displayed dermatology findings such as facial teleangiectasias and trunk/limb white spots representing post-inflammatory hypopigmentation. Interestingly, co-segregating with modifying cytochrome P450 (CYP2C) variant in the HHT patients led to NSAID intolerance marked by increased frequency of bleeding episodes. No arterial-venous malformation of the visceral organs and brain or association with cancer were observed. The heterogeneity of clinical presentation and the role of other variants support the need of regular patient monitoring and development of a nation-wide patient registry.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 1","pages":"1-6"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38021847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PD-1, PD-L1 and PD-L2 Expression in Mantle Cell Lymphoma and Healthy Population. PD-1、PD-L1和PD-L2在套细胞淋巴瘤和健康人群中的表达。
IF 1.1 4区 医学
Folia Biologica Pub Date : 2020-01-01 DOI: 10.14712/fb2020066040117
J Karolova, M Radek, K Helman, M Spacek, M Trneny, P Klener
{"title":"PD-1, PD-L1 and PD-L2 Expression in Mantle Cell Lymphoma and Healthy Population.","authors":"J Karolova, M Radek, K Helman, M Spacek, M Trneny, P Klener","doi":"10.14712/fb2020066040117","DOIUrl":"10.14712/fb2020066040117","url":null,"abstract":"<p><p>Cell surface expression of PD-1, PD-L1 and PD-L2 immune checkpoints on B and T cells obtained from patients with mantle cell lymphoma shows ambiguous results across many studies and creates obstacles for the implementation of immune checkpoint inhibitors into the therapy of mantle cell lymphoma. Using multiparameter flow cytometry we analysed surface expression of PD-1, PD-L1 and PD-L2 molecules on B and T cells of 31 newly diagnosed mantle cell lymphomas and compared it with the results of 26 newly diagnosed chronic lymphocytic leukaemias and 20 healthy volunteers. To gain insight into the age-dependent changes of surface expression of these immune checkpoints, flow cytometric subanalysis of 30 healthy volunteers of 25-93 years of age was conducted. Overall, we demonstrated weak surface expression of PD-1, PD-L1 and PD-L2 on B and T cells of mantle cell lymphoma patients (< 10 % when compared to healthy individuals). A significant age-dependent increase in the expression of PD-1 and its ligand PD-L2 was observed in healthy volunteers. Our results suggest that neither PD-1 nor its ligands represent relevant druggable targets for the therapy of mantle cell lymphoma. The observed age-dependent changes in healthy population could impact efficiency of immune checkpoint inhibitors and could be at least partly connected with increased incidence of cancer with age.</p>","PeriodicalId":12281,"journal":{"name":"Folia Biologica","volume":"66 4","pages":"117-122"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25499406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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