Experimental oncology最新文献

筛选
英文 中文
SIGNIFICANCE OF miRNA-185-5P AND miRNA-424-5P AS PROGNOSTIC MARKERS IN PROGRESSION OF EARLY-STAGE ENDOMETRIAL CANCER. miRNA-185-5P和miRNA-424-5P在早期晚期肿瘤进展过程中作为预后标志物的意义。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.244
N P Iurchenko, N M Glushchenko, S V Nespryadko, L G Buchynska
{"title":"SIGNIFICANCE OF miRNA-185-5P AND miRNA-424-5P AS PROGNOSTIC MARKERS IN PROGRESSION OF EARLY-STAGE ENDOMETRIAL CANCER.","authors":"N P Iurchenko, N M Glushchenko, S V Nespryadko, L G Buchynska","doi":"10.15407/exp-oncology.2024.03.244","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.244","url":null,"abstract":"<p><strong>Aim: </strong>To compare the expression of miRNA-185-5p and miRNA-424-5p in tumor cells and peripheral blood serum (PBS) of patients with endometrioid carcinoma of the endometrium (ECE) and to evaluate the significance of these biomarkers in cancer progression.</p><p><strong>Materials and methods: </strong>The study was conducted on the samples of peripheral blood serum (PBS) and tumor tissue of 58 patients with stage I ECE using clinical and morphological methods and real-time polymerase chain reaction.</p><p><strong>Results: </strong>A significant increase in the levels of circulating and tumor-associated miRNA-424-5p was established in ECE patients with a history of recurrences compared to patients without recurrences. To the contrary, the expression level of miRNA-185-5p increased in the PBS and decreased in the tumor tissue of ECE patients with recurrences compared to the patients without recurrence. In addition, we revealed that the expression levels of the studied miRNAs were associated with the differentiation grade and degree of tumor invasion. We established that miRNA-424-5p levels in PBS could serve as the most significant indicator for predicting the occurrence of recurrence in patients with ECE (AUC = 0.991; Sp 94.0%; Se 99.9%).</p><p><strong>Conclusions: </strong>The expression features of miRNA-185-5p and miRNA-424-5p in the PBS and tumor tissue of patients with ECE are associated with the aggressiveness of cancer course and the risk of recurrence.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"244-252"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
IDENTIFICATION OF CLINICALLY RELEVANT GENE VARIANTS IN COLON ADENOCARCINOMA SAMPLES OF UKRAINIAN PATIENTS USING A COMPREHENSIVE CANCER PANEL: A PILOT STUDY. 使用综合癌症小组鉴定乌克兰患者结肠腺癌样本中临床相关基因变异:一项试点研究。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.221
G Gerashchenko, R Gulkovskyi, N Melnichuk, N Hryshchenko, T Marchyshak, O Mankovska, A Bezverkhiy, I Kotuza, L Rosha, A Kotuza, Z Tkachuk, V Kashuba, M Tukalo
{"title":"IDENTIFICATION OF CLINICALLY RELEVANT GENE VARIANTS IN COLON ADENOCARCINOMA SAMPLES OF UKRAINIAN PATIENTS USING A COMPREHENSIVE CANCER PANEL: A PILOT STUDY.","authors":"G Gerashchenko, R Gulkovskyi, N Melnichuk, N Hryshchenko, T Marchyshak, O Mankovska, A Bezverkhiy, I Kotuza, L Rosha, A Kotuza, Z Tkachuk, V Kashuba, M Tukalo","doi":"10.15407/exp-oncology.2024.03.221","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.221","url":null,"abstract":"<p><p>The study aimed to identify the clinically relevant gene variants in colon adenocarcinoma samples of Ukrainian patients using the NGS Comprehensive Cancer Panel (CCP) to implement them conveniently in clinical practice.</p><p><strong>Methods: </strong>We have studied 20 samples of Ukrainian patients with colorectal adenocarcinomas of various differentiation grades. To identify the clinically relevant gene variants, the CCP data were filtered using the Franklin by Genoox database.</p><p><strong>Results: </strong>A total of 79 clinically relevant gene variant alterations (SNVs, INDELs) were found in 28 of 409 genes. The largest number of mutations was found in 3 genes, APC, TP53, and KRAS (16, 14, and 8, accordingly). We revealed 4 variants in PTEN and SMAD4, 3 variants in CHEK2, ERBB2, and PIK3CA genes, and 2 variants in AKT1, ATM, DST, IDH1, and TCF12. Mutations for 7 genes, KRAS, TP53, CHEK2, PTEN, AKT1, APC, and SMAD4, were found in more than 1 tumor tissue sample. Tier 1-2 gene variants rate was about 50% of all genetic variants. The therapeutic significance was found in more than 55% of mutations. Additionally, 11 novel genetic mutations in 9 genes have been identified, including G6PD, APC, DST, SINE1, SMAD2, and FLCN.</p><p><strong>Conclusions: </strong>These data suggest a high level of clinical relevance of the NGS CCP approach. Further confirmation on a larger number of samples and using a deeper analysis by other approaches is required.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"221-227"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
INFLUENCE OF CONFORMAL RADIOTHERAPY IN COMBINATION WITH RADIOMODIFIERS ON THE CONTENT OF VEGF, COX-2, AND PGE-2 IN BLOOD SERUM OF PATIENTS WITH HEAD AND NECK SQUAMOUS CELL CARCINOMA. 适形放疗联合放射调节剂对头颈部鳞状细胞癌患者血清中 VEGF、COX-2 和 PGE-2 含量的影响。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.253
N Mitryayeva, L Grebinyk, S Artiukh, N Bilozor, V Starenkiy
{"title":"INFLUENCE OF CONFORMAL RADIOTHERAPY IN COMBINATION WITH RADIOMODIFIERS ON THE CONTENT OF VEGF, COX-2, AND PGE-2 IN BLOOD SERUM OF PATIENTS WITH HEAD AND NECK SQUAMOUS CELL CARCINOMA.","authors":"N Mitryayeva, L Grebinyk, S Artiukh, N Bilozor, V Starenkiy","doi":"10.15407/exp-oncology.2024.03.253","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.253","url":null,"abstract":"<p><strong>Background: </strong>The development of new approaches to modeling tumor radiosensitivity in patients with head and neck squamous cell carcinoma (HNSCC) is an important problem for overcoming tumor radioresistance. New agents for radiomodification are inhibitors of the enzyme cyclooxygenase-2 (COX-2). The study of markers of radioresistance in cancer patients undergoing radiotherapy (RT) in combination with COX-2 inhibitors and chemotherapy may contribute to the effectiveness of RT.</p><p><strong>Aim: </strong>To determine the effect of conformal RT in combination with radiomodifiers (celecoxib, cisplatin, or their combination) on the content of vascular endothelial growth factor (VEGF), COX-2, and prostaglandin E-2 (PGE-2) in the serum of patients with HNSCC.</p><p><strong>Materials and methods: </strong>47 patients with HNSCC were divided into 4 groups: RT in combination with celecoxib and cisplatin, RT with cisplatin, RT with celecoxib, and RT. Patients received radiation treatment on a Clinac 600C linear accelerator. The levels of VEGF, COX-2, and PGE-2 in the serum were determined by enzyme immunoassay.</p><p><strong>Results: </strong>Blocking COX-2 in patients with HNSCC leads to a decrease in VEGF levels. The largest decrease in VEGF levels was observed in a group treated by RT in combination with celecoxib and cisplatin, indicating a more effective antiangiogenic effect. The changes in the levels of VEGF, COX-2, and PGE-2, which are most pronounced under the combined effect of RT and both radiomodifiers, coincided with an objective response to radiation treatment.</p><p><strong>Conclusions: </strong>The data obtained indicate the effect of radiomodification on the suppression of angiogenesis, which is most pronounced under the combined effect of RT and both radiomodifiers. The decrease in the levels of PGE- 2, COX-2, and VEGF coincides with the clinical efficacy of radiotherapy according to RECIST 1.1 criteria.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"253-259"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ROLE OF RIBONUCLEASES IN THE REGULATION OF IMMUNE RESPONSE. 核糖核酸酶在免疫反应调控中的作用。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.192
V Shlyakhovenko, O Samoylenko, A Verbinenko, I Ganusevich
{"title":"ROLE OF RIBONUCLEASES IN THE REGULATION OF IMMUNE RESPONSE.","authors":"V Shlyakhovenko, O Samoylenko, A Verbinenko, I Ganusevich","doi":"10.15407/exp-oncology.2024.03.192","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.192","url":null,"abstract":"<p><p>Ribonucleases (RNases) perform many different functions in living systems. They are responsible for the formation and processing of various ribonucleic acids (RNAs), including the messenger RNA and all types of microRNAs, and determine the duration of the existence of different RNAs in the cell and extracellular environment. RNases are ubiquitously expressed in many tissue types. This short review discusses the major types and main functions of RNases, their homeostatic functions, influence of transcription, immunomodulation, and the role of extracellular RNases in the immune defense mechanisms.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"192-201"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
AGGRESSIVE RHABDOID TUMOR IN THE RIGHT LUNG: A CASE REPORT. 右肺侵袭性横纹肌样瘤1例。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.273
O Dyadyk, C Shatrova, V Ilchenko, L Rosha, V Zaritska, I Irkin, Yu Beketova, P Snisarevskyi
{"title":"AGGRESSIVE RHABDOID TUMOR IN THE RIGHT LUNG: A CASE REPORT.","authors":"O Dyadyk, C Shatrova, V Ilchenko, L Rosha, V Zaritska, I Irkin, Yu Beketova, P Snisarevskyi","doi":"10.15407/exp-oncology.2024.03.273","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.273","url":null,"abstract":"<p><p>Rhabdoid tumor is a rare and aggressive neoplasm that usually occurs in children and is often localized in the central nervous system and kidneys, but can be found in many other sites. In our case report, we describe a tumor that was found on computed tomography in the thoracic region of a 62-year-old male and was successfully surgically resected. The images and descriptions of our findings and the results of the additional immunohistochemical studies allow us to make the final diagnosis.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"273-277"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EVOLUTION OF METFORMIN IN BREAST CANCER THERAPY IN LAST TWO DECADES: A REVIEW. 近二十年来二甲双胍在乳腺癌治疗中的进展综述。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.185
R Sarathi, S Sarumathy, V M Durai Mavalavan
{"title":"EVOLUTION OF METFORMIN IN BREAST CANCER THERAPY IN LAST TWO DECADES: A REVIEW.","authors":"R Sarathi, S Sarumathy, V M Durai Mavalavan","doi":"10.15407/exp-oncology.2024.03.185","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.185","url":null,"abstract":"<p><p>Among women, breast cancer is one of the most prevalent cancers. The disease has a complex etiology, with multiple biological pathways contributing to its development. As insulin signaling has mitogenic effects, glucose is a necessary cellular metabolic substrate, and the growth and metastasis of breast cancer are closely related to cellular glucose metabolism. Anti-diabetic medications have drawn increased attention as a potential treatment for breast cancer. Metformin lowers cancer incidence and death rates in patients with type 2 diabetes, according to epidemiologic studies. Preclinical studies conducted in vivo and in vitro offer fascinating new insights into the cellular mechanisms underlying metformin oncostatic action. We present an overview of the mechanisms of anticancer effects of metformin and discuss its potential function as an adjuvant in the treatment of breast cancer.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"185-191"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
FACTORS AFFECTING COVID-19 OUTCOMES IN PATIENTS WITH HEMATOLOGICAL MALIGNANCIES. 影响血液系统恶性肿瘤患者COVID-19预后的因素
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.260
A M Rudzite, D Auzina, S Lejniece
{"title":"FACTORS AFFECTING COVID-19 OUTCOMES IN PATIENTS WITH HEMATOLOGICAL MALIGNANCIES.","authors":"A M Rudzite, D Auzina, S Lejniece","doi":"10.15407/exp-oncology.2024.03.260","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.260","url":null,"abstract":"<p><strong>Background: </strong>Patients with hematological malignancies (HM) are considered to have a high risk of developing severe and life-threatening infections including COVID-19 because of immune deficiency and immunosuppressive treatments. Although the COVID pandemic spread worldwide, morbidity and mortality data varied from country to country. A more accurate identification of risk factors would allow the improvement of the clinical management of HM patients.</p><p><strong>Aim: </strong>This study aimed to determine real-life data - the mortality rate, clinical outcomes, and risk factors affecting mortality in patients with HM and COVID-19 at the Riga East University Hospital (REUH) in Latvia.</p><p><strong>Materials and methods: </strong>In this retrospective non-interventional cohort study, we included adult patients treated in REUH with ongoing HM and laboratory- confirmed COVID-19 observed between December 1st, 2020, and March 31st, 2023. All data were analyzed using descriptive statistics, binary logistic regression, univariable Cox regression model, and other methods.</p><p><strong>Results: </strong>We registered 156 patients with 11 different HMs. Multiple myeloma, non-Hodgkin lymphoma, and acute myeloid leukemia were the most common HM. COVID-19 mortality rate was 19.9% (31/156). Factors increasing the risk of death included the severity of COVID-19 (p < 0.001), the accession of bacterial infection (p < 0.001), longer hospital stay (p = 0.037), absolute neutrophil count (ANC) ≤ 0.5 × 109/mm3 (p = 0.014), fever (p = 0.039), and acute myeloid leukemia (p = 0.002). We also confirmed that the mortality in the third pandemic wave was significantly lower than in the second wave (p = 0.002). Although vaccination seemed to be a risk-mitigating factor (58.8% [10/17] of those who died from COVID-19 were not vaccinated), no statistically important correlation was found (p = 0.690).</p><p><strong>Conclusion: </strong>This survey confirmed that the COVID-19 mortality rate was higher in patients with HM (19.9% [31/156]) than in the population. ANC, severity of COVID-19, accession of bacterial infection, hospital stay, fever, and acute myeloid leukemia were the factors that increased mortality in HM patients.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"260-267"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EFFECT OF ADHESIVE LLC CELL PRETREATMENT BY OXAMATE ON THE SURVIVAL INDEXES AFTER TRANSITION TO DE-ADHESIVE GROWTH. 草氨酸盐预处理粘附性 llc 细胞对过渡到非粘附性生长后存活指标的影响。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.237
Yu Stepanov, D Kolesnik, Yu Yakshibaeva, G Solyanik
{"title":"EFFECT OF ADHESIVE LLC CELL PRETREATMENT BY OXAMATE ON THE SURVIVAL INDEXES AFTER TRANSITION TO DE-ADHESIVE GROWTH.","authors":"Yu Stepanov, D Kolesnik, Yu Yakshibaeva, G Solyanik","doi":"10.15407/exp-oncology.2024.03.237","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.237","url":null,"abstract":"<p><strong>Background: </strong>The ability to metabolic reprogramming is a distinctive feature of metastatically active tumor cells. A classic example of metabolic reprogramming, characteristic of almost all malignant cells, is aerobic glycolysis. Therefore, inhibition of glycolysis in tumor cells is considered a promising strategy for antitumor therapy.</p><p><strong>Aim: </strong>To generate Lewis lung carcinoma (LLC) cell subpopulation after pretreatment by a lactate dehydrogenase (LDH) inhibitor - oxamate in adhesive growth conditions, and then to study the metabolism of this subpopulation in the anchorage-independent growth conditions.</p><p><strong>Materials and methods: </strong>LLC cells were cultured without oxamate or with 17 mM oxamate in the adhesive growth conditions with the following transition to the anchorage-independent growth conditions without oxamate. A distribution of LLC cells by cell cycle phases, apoptosis rate, levels of reactive oxygen species (ROS), E-cadherin, and vimentin were determined by flow cytometry. Glucose consumption and lactate production were determined by spectrophotometry.</p><p><strong>Results: </strong>48-h oxamate treatment in adhesive growth conditions resulted in a 30% decrease of the total number of LLC cells compared to the control. In 72 h after the transfer of both oxamate-treated and control cells into the anchorage-independent growth condition without oxamate, the number of viable cells pretreated with oxamate was reduced by 17% (p < 0.05) compared to the control cells. However, the distribution of cells by cell cycle phases did not differ. In cells pre-treated with oxamate, the rate of glucose consumption decreased by 20% (p < 0.05), ROS generation was reduced by 17%, vimentin expression decreased by 10% while the rate of lactate production was the same in oxamate-pretreated and control cells.</p><p><strong>Conclusion: </strong>The cytostatic effect of oxamate demonstrated in adhesive growth conditions persisted for 72 h in the anchorage-independent growth conditions. The absence of differences in the cell cycle phase distribution and a decrease in the ROS generation may indicate the initial stage of overcoming the cytostatic effect of oxamate after 72 h of culturing LLC cells in anchorage- independent growth conditions.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"237-243"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
THE INFLUENCE OF BIFIDOBACTERIUM ANIMALIS AND LECTIN OF B. SUBTILIS IMV B-7724 ON THE ANTITUMOR IMMUNE RESPONSE OF MICE WITH EHRLICH ADENOCARCINOMA. 动物双歧杆菌和枯草芽孢杆菌b-7724凝集素对埃利希腺癌小鼠抗肿瘤免疫应答的影响。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.228
N Fedosova, N Cheremshenko, S Gogol, N Bezdieniezhnykh, V Tikhonov, I Voyeykova, V Konovalenko, V Chekhun
{"title":"THE INFLUENCE OF BIFIDOBACTERIUM ANIMALIS AND LECTIN OF B. SUBTILIS IMV B-7724 ON THE ANTITUMOR IMMUNE RESPONSE OF MICE WITH EHRLICH ADENOCARCINOMA.","authors":"N Fedosova, N Cheremshenko, S Gogol, N Bezdieniezhnykh, V Tikhonov, I Voyeykova, V Konovalenko, V Chekhun","doi":"10.15407/exp-oncology.2024.03.228","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.228","url":null,"abstract":"<p><strong>Aim: </strong>To investigate the effect of bacteria of the genus Bifidobacterium and the extracellular metabolite of B. subtilis IMV B-7724 on the antitumor immune response of mice with a model tumor.</p><p><strong>Materials and methods: </strong>The study was conducted on Balb/c mice with transplanted solid Ehrlich adenocarcinoma (ACE). Starting from the 2nd day after the transplantation of tumor cells, the animals of the experimental groups were treated with lectin of B. subtilis IMV B-7724 (s/c, 1 mg/kg of weight), Bifidobacterium animalis (per os, 7 × 105 CFU/mouse) or their combination. The immunological studies were performed on the 21st and 28th days of tumor growth. The functional activity of natural killer cells (NK), cytotoxic T-lymphocytes (CTL), as well as the ability of lymphocytes from the peripheral lymph nodes (PLN) to transform into blast cells under the influence of T- (Con A) and B-cell (LPS) mitogens were determined.</p><p><strong>Results: </strong>Administration of probiotic components to the mice with ACE led to the activation of innate immune responses, that is, to a significant increase in the cytotoxic activity of NK, especially in the case of their combined use. The NK cytotoxicity index was higher than that in the non-treated ACE-bearing mice and the intact control by 3.7 and 2.1 times, respectively (p < 0.05). Similarly, the highest specific cytotoxic activity of spleen lymphocytes was observed upon the combined use of the microbial preparations: the CTL cytotoxicity index was nearly 2.5-fold higher than in the non-treated ACE-bearing mice. The data on the ability of PLN lymphocytes to transform into blast cells under the influence of Con A and LPS indicated the preservation of the functional activity of lymphocytes in the animals of the experimental groups during ACE growth.</p><p><strong>Conclusion: </strong>Both B. animalis and lectin of B. subtilis IMV B-7724 have a significant influence on the effectors of the natural and adaptive immunity of mice with ACE. Their combined use was found to be the most effective.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"228-236"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EXPRESSION OF IMMUNOGLOBULIN LIGHT CHAIN GENES IN STEREOTYPED CASES FROM UKRAINIAN COHORT OF CHRONIC LYMPHOCYTIC LEUKEMIA PATIENTS. 乌克兰慢性淋巴细胞白血病患者典型病例免疫球蛋白轻链基因的表达。
Experimental oncology Pub Date : 2024-12-19 DOI: 10.15407/exp-oncology.2024.03.202
I Abramenko, N Bilous, Z Martina, I Dyagil, A Chumak
{"title":"EXPRESSION OF IMMUNOGLOBULIN LIGHT CHAIN GENES IN STEREOTYPED CASES FROM UKRAINIAN COHORT OF CHRONIC LYMPHOCYTIC LEUKEMIA PATIENTS.","authors":"I Abramenko, N Bilous, Z Martina, I Dyagil, A Chumak","doi":"10.15407/exp-oncology.2024.03.202","DOIUrl":"https://doi.org/10.15407/exp-oncology.2024.03.202","url":null,"abstract":"<p><strong>Background: </strong>Analysis of immunoglobulin heavy chain gene (IGHV) rearrangements expressed in chronic lymphocytic leukemia (CLL) cells has provided insights into the B-cell receptor (BCR) repertoire in CLL. In more than 40% of CLL patients, (quasi)identical or stereotyped BCR is expressed. The recent data point at the non-stochastic expression of immunoglobulin light lambda (IGLV) or kappa (IGKV) chains as well. Several pairs of IGHV and IGK/LV have been described for some major stereotyped subsets, but most subsets have not been characterized.</p><p><strong>Aim: </strong>To study the IGK/LV gene expression in stereotyped CLL cases.</p><p><strong>Materials and methods: </strong>Analysis was performed in a group of 105 CLL patients with stereotyped BCR. The cases with stereotyped BCRs were identified according to Agathangelidis et al. (2021). The IGHV and IGK/LV gene expressions were studied by a polymerase chain reaction followed by direct sequencing.</p><p><strong>Results: </strong>The expression of the IGK/LV genes in the most presented major stereotyped subsets (#1, #2, #3C3, #4, #6, #28а) was in agreement with the data reported by other authors. For the cases of subsets #5b, #9D1, #9D4, #16, #50, #59, and #77, differences were found. The new data on the IGK/LV gene expression in 55 minor clusters were presented. A number of patterns of the IGK/LV gene expression depending on the phylogenetic clan and mutational status of the IGHV genes have been described.</p><p><strong>Conclusion: </strong>The non-stochastic distribution of the IGKV/LV gene expression in the individual stereotyped subsets was confirmed. Taking into account the complementary role of the light chains in antigen recognition by the clonotypic BCRs, it was suggested that the subsets with the heterogeneous IGK/LV expression might be reclassified and divided into separate subgroups based on the IGHV and IGK/LV association.</p>","PeriodicalId":94318,"journal":{"name":"Experimental oncology","volume":"46 3","pages":"202-208"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信