Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis最新文献

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PAX8-AS1/microRNA-25–3p/LATS2 regulates malignant progression of ovarian cancer via Hippo signaling PAX8-AS1/microRNA-25-3p/LATS2通过Hippo信号调控卵巢癌的恶性进展。
IF 2.3 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-07-01 Epub Date: 2024-04-21 DOI: 10.1016/j.mrfmmm.2024.111858
Gang Liu, Jing Tian
{"title":"PAX8-AS1/microRNA-25–3p/LATS2 regulates malignant progression of ovarian cancer via Hippo signaling","authors":"Gang Liu,&nbsp;Jing Tian","doi":"10.1016/j.mrfmmm.2024.111858","DOIUrl":"10.1016/j.mrfmmm.2024.111858","url":null,"abstract":"<div><h3>Background</h3><p>Ovarian cancer (OC) is a frequent malignancy of the female reproductive system. Recently, the aberrant expression of numerous lncRNAs has been confirmed as a key factor for cancer development. The regulatory role of PAX8-AS1 in some cancers has been investigated, but its role in OC progression remains unclear. This study focuses on the role and molecular mechanism of PAX8-AS1 in the malignant progression of OC.</p></div><div><h3>Methods</h3><p>Bioinformatics means were adopted to analyze the expression of PAX8-AS1, microRNA-25–3p, and LATS2 in OC tissues and the binding sites between the three. qRT-PCR was employed to determine the expression of these genes in OC cells. CCK-8, colony formation, scratch healing, and Transwell assays were used to see cell viability, proliferation, migration, and invasion, respectively. Fluorescence in situ Hybridization was performed to probe the subcellular localization of PAX8-AS1. Western blot was applied to evaluate the expression and phosphorylation levels of YAP and TAZ, and an immunofluorescence assay was used to detect the translocation of them. Dual luciferase assay was applied to validate the binding relationship between PAX8-AS1 and microRNA-25–3p, as well as between microRNA-25–3p and LATS2.</p></div><div><h3>Results</h3><p>PAX8-AS1 and LATS2 were lowly expressed. MicroRNA-25–3p was highly expressed in OC. PAX8-AS1 was expressed in cytoplasm and regulated LATS2 expression by sponging microRNA-25–3p. Overexpressing PAX8-AS1 can suppress the malignant behaviors of OC cells, whereas treatment with microRNA-mimic can reverse these results. In addition, the phosphorylation levels of YAP and TAZ increased upon oe-LATS2 treatment, and oe-LATS2 could promote YAP and TAZ translocate from the nucleus to cytoplasm. Rescue experiments demonstrated that sh-PAX8-AS1 fostered malignant progression of OC, which was reversed by simultaneous oe-LATS2.</p></div><div><h3>Conclusion</h3><p>In summary, PAX8-AS1/microRNA-25–3p/LATS2 regulated the malignant progression of OC through Hippo signaling, which suggested that PAX8-AS1/microRNA-25–3p/LATS2 axis may be a novel target for OC treatment.</p></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"829 ","pages":"Article 111858"},"PeriodicalIF":2.3,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141094707","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
Therapeutic potential of curcumin in autophagy modulation: Insights into the role of transcription factor EB 姜黄素在自噬调节中的治疗潜力:对转录因子 EB 作用的见解
IF 1.5 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-07-01 Epub Date: 2024-08-12 DOI: 10.1016/j.mrfmmm.2024.111879
Shabnam Radbakhsh , Prashant Kesharwani , Amirhossein Sahebkar
{"title":"Therapeutic potential of curcumin in autophagy modulation: Insights into the role of transcription factor EB","authors":"Shabnam Radbakhsh ,&nbsp;Prashant Kesharwani ,&nbsp;Amirhossein Sahebkar","doi":"10.1016/j.mrfmmm.2024.111879","DOIUrl":"10.1016/j.mrfmmm.2024.111879","url":null,"abstract":"<div><p>Transcription factor EB (TFEB) is a basic Helix–Loop–Helix/Leucine Zipper (bHLHZip) class of DNA-binding proteins, which can control the expression of genes included in the autophagy–lysosomal pathway. TFEB regulates the autophagic flux by enhancing lysosome biogenesis, forming autophagosomes, and fusion with lysosomes, thereby facilitating cellular clearance of pathogenic protein structures. Curcumin is a natural polyphenolic molecule with pharmacological properties that make it a potential therapeutic candidate for a wide range of diseases. One of the important curcumin mechanisms of action includes modulation of autophagy through affecting various signaling components such as TFEB. This review discusses <em>in vitro</em> and <em>in vivo</em> evidence on the effects of curcumin on autophagy process <em>via</em> modulating TFEB activity in different disorders.</p></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"829 ","pages":"Article 111879"},"PeriodicalIF":1.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040854","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
HSPE1 enhances aerobic glycolysis to promote progression of lung adenocarcinoma HSPE1 可增强有氧糖酵解,促进肺腺癌的进展
IF 2.3 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-07-01 Epub Date: 2024-06-08 DOI: 10.1016/j.mrfmmm.2024.111867
Tao Xie , Manxiang Li
{"title":"HSPE1 enhances aerobic glycolysis to promote progression of lung adenocarcinoma","authors":"Tao Xie ,&nbsp;Manxiang Li","doi":"10.1016/j.mrfmmm.2024.111867","DOIUrl":"https://doi.org/10.1016/j.mrfmmm.2024.111867","url":null,"abstract":"<div><h3>Objective</h3><p>This study aimed to explore the role of heat shock protein family E member 1 (HSPE1) in the metabolism of lung adenocarcinoma (LUAD) cells.</p></div><div><h3>Methods</h3><p>Bioinformatics analysis was applied to examine the expression of HSPE1 in LUAD and its correlation with patient survival. Single-gene Gene Set Enrichment Analysis was conducted for HSPE1. LUAD cell lines or mouse models with up-regulated/down-regulated HSPE1 were constructed. The expression level of HSPE1 was detected by qRT-PCR or immunohistochemical staining. We used CCK-8 assay to measure cell viability and flow cytometry to detect apoptosis levels. Transwell assay was performed to evaluate migration and invasion characteristics. Extracellular Flux Analyzer was employed to detect oxygen consumption rate and extracellular acidification rate. Glucose consumption, adenosine triphosphate production, and lactate levels were measured by Reagent kits. Western blot analysis was conducted to examine the expression levels of GLUT1, HK2, and LDHA.</p></div><div><h3>Results</h3><p>HSPE1 promoted proliferative, migratory, and invasive abilities, and inhibited apoptosis of LUAD cells through the aerobic glycolysis pathway. Specifically, LUAD cells with HSPE1 knockdown exhibited significantly decreased proliferation, migration, and invasion abilities, along with an increased apoptosis rate. Additionally, the expression levels of aerobic glycolysis-related proteins HK2, LADH, and GLUT1 were downregulated, while their levels were increased in LUAD cells with high HSPE1 expression. Suppression of aerobic glycolysis by 2-DG attenuated the promoting effects of HSPE1 overexpression on the proliferation, migration, and invasion of LUAD cells. HSPE1 knockdown inhibited tumor growth and decreased expression levels of HK2, LADH, and GLUT1 <em>in vivo</em>.</p></div><div><h3>Conclusion</h3><p>HSPE1 regulated the proliferation, migration, and invasion of LUAD cells through the aerobic glycolysis pathway, thus facilitating malignant development of LUAD. The study suggested that HSPE1 could be useful as a therapeutic target for LUAD.</p></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"829 ","pages":"Article 111867"},"PeriodicalIF":2.3,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141325626","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
Apiole, an important constituent of parsley, is a mixed-type inhibitor of the CYP1A subfamily 欧芹的一种重要成分 Apiole 是 CYP1A 亚家族的混合型抑制剂
IF 1.5 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-07-01 Epub Date: 2024-08-16 DOI: 10.1016/j.mrfmmm.2024.111881
J.J. Espinosa-Aguirre , R. Camacho-Carranza , SL Hernández-Ojeda , R.I. Cárdenas-Ávila , R. Santes-Palacios
{"title":"Apiole, an important constituent of parsley, is a mixed-type inhibitor of the CYP1A subfamily","authors":"J.J. Espinosa-Aguirre ,&nbsp;R. Camacho-Carranza ,&nbsp;SL Hernández-Ojeda ,&nbsp;R.I. Cárdenas-Ávila ,&nbsp;R. Santes-Palacios","doi":"10.1016/j.mrfmmm.2024.111881","DOIUrl":"10.1016/j.mrfmmm.2024.111881","url":null,"abstract":"<div><p>Apiole (1-allyl-2,5-dimethoxy-3,4-methylenedioxybenzene) and parsley leaves ethanolic extract containing it inhibit the rat liver microsomal ethoxy- and methoxyresorufin-<em>O</em>-deacetylase activities associated with cytochrome P450 (CYP) 1A1 and 1A2, respectively. Cytochrome P4501A subfamily metabolizes environmental mutagens and several drugs, leading to the formation of mutagenic metabolites. Docking analysis showed that residue Phe123 within the active site of the CYP1A1 enzyme is bound to apiole through a π/π stacking of its benzene ring. In the case of 1A2, its Phe226 interacts with the dioxolane ring of apiole. Furthermore, apiole behaves as a mixed-type inhibitor of bacterial human recombinant CYP1A1. To explore one of the possible biological implications of this inhibitory effect, we tested the capacity of apiole and the parsley ethanolic extract to interfere with the mutagenicity of the promutagen 2-amino-3,8-dimethylimidazo[4,5-<em>f</em>]quinoxaline (MeIQx) metabolized by CYP1A subfamily. As expected, both apiole and the plant extract reduced the number of revertant colonies of <em>Salmonella typhimurium</em> TA98 Ames strain after exposure to MeIQx, reaching a 78 % and 100 % reduction, respectively. Neither apiol nor parsley extract were mutagenic to the TA98 strain. We speculate that consuming apiole, a constituent of edible herbs, in conjunction with the utilization of pharmaceuticals metabolized by the CYP1A subfamily, may result in herb-drug interactions. Furthermore, the consumption of apiole by individuals who regularly ingest fresh vegetables may contribute to the low incidence of cancer observed in those who adhere to such a dietary regimen.</p></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"829 ","pages":"Article 111881"},"PeriodicalIF":1.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0027510724000319/pdfft?md5=17daae5a5788ebda9ab86f4f88a2a81b&pid=1-s2.0-S0027510724000319-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142075956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Knockdown of SDCBP induces autophagy to promote cardiomyocyte growth and angiogenesis in hypoxia/reoxygenation model 在缺氧/复氧模型中敲除 SDCBP 可诱导自噬,促进心肌细胞生长和血管生成
IF 1.5 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-07-01 Epub Date: 2024-10-23 DOI: 10.1016/j.mrfmmm.2024.111885
Ling Gao, Wanqian Liu
{"title":"Knockdown of SDCBP induces autophagy to promote cardiomyocyte growth and angiogenesis in hypoxia/reoxygenation model","authors":"Ling Gao,&nbsp;Wanqian Liu","doi":"10.1016/j.mrfmmm.2024.111885","DOIUrl":"10.1016/j.mrfmmm.2024.111885","url":null,"abstract":"<div><h3>Objective</h3><div>Angina, myocardial infarction, and even mortality can result from myocardial ischemia (MI). Angiogenesis facilitates tissue repair, lessens cell damage, and ensures that ischemic tissues receive blood and oxygen. This study investigated the possible mechanism of syndecan-binding protein (SDCBP) on autophagy and assessed its impact on myocardial ischemia.</div></div><div><h3>Method</h3><div>A cardiac hypoxia-reoxygenation (H/R) cell model was created for this investigation. Flow cytometry, the cell counting kit-8, and Western blotting were used to measure the damage to cardiomyocytes. Western blotting and immunofluorescence were used to quantify autophagy. Furthermore, assays for tube formation, migration, and Western blotting were used to assess angiogenic capacity. Additionally, the EGFR-PI3K-Akt signaling pathway's activation was found using Western blotting.</div></div><div><h3>Result</h3><div>In the H/R-induced cardiomyocyte model, there is a rise in the expression of SDCBP. Treatment with H/R markedly boosted apoptosis and considerably decreased cell survival. H/R induction strongly inhibits autophagy, increases P62 expression, and decreases LC3II/I expression. Moreover, H/R induction dramatically reduced the ability to form tubes, migrate, and express VEGF, all of which prevented cell angiogenesis. Furthermore, EGFR-PI3K-Akt signaling pathway expression is strongly inhibited by H/R induction. considerable reduction of H/R-induced cell damage, considerable inhibition of apoptosis, promotion autophagy and angiogenesis, and activation of the EGFR-PI3K-Akt signaling pathway are all possible with SDCBP knockdown.</div></div><div><h3>Conclusion</h3><div>To summarize, this study demonstrates that via stimulating the EGFR-PI3K-Akt signaling pathway, SDCBP knockdown may mitigate the effects of H/R-induced cardiomyocyte death and encourage autophagy and blood vessel formation. A theoretical foundation for possible myocardial infarction treatment is thus provided.</div></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"829 ","pages":"Article 111885"},"PeriodicalIF":1.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142561078","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
MicroRNA-532 as a probable diagnostic and therapeutic marker in cancer patients MicroRNA-532 可能是癌症患者的诊断和治疗标志物。
IF 1.5 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-07-01 Epub Date: 2024-07-08 DOI: 10.1016/j.mrfmmm.2024.111874
Malihe Lotfi , Amirhosein Maharati , Amir Abbas Hamidi , Negin Taghehchian , Meysam Moghbeli
{"title":"MicroRNA-532 as a probable diagnostic and therapeutic marker in cancer patients","authors":"Malihe Lotfi ,&nbsp;Amirhosein Maharati ,&nbsp;Amir Abbas Hamidi ,&nbsp;Negin Taghehchian ,&nbsp;Meysam Moghbeli","doi":"10.1016/j.mrfmmm.2024.111874","DOIUrl":"10.1016/j.mrfmmm.2024.111874","url":null,"abstract":"<div><p>The high mortality rate in cancer patients is always one of the main challenges of the health systems globally. Several factors are involved in the high rate of cancer related mortality, including late diagnosis and drug resistance. Cancer is mainly diagnosed in the advanced stages of tumor progression that causes the failure of therapeutic strategies and increases the death rate in these patients. Therefore, assessment of the molecular mechanisms associated with the occurrence of cancer can be effective to introduce early tumor diagnostic markers. MicroRNAs (miRNAs) as the stable non-coding RNAs in the biological body fluids are involved in regulation of cell proliferation, migration, and apoptosis. MiR-532 deregulation has been reported in different tumor types. Therefore, in the present review we discussed the role of miR-532 during tumor growth. It has been shown that miR-532 has mainly a tumor suppressor role through the regulation of transcription factors, chemokines, and signaling pathways such as NF-kB, MAPK, PI3K/AKT, and WNT. In addition to the independent role of miR-532 in regulation of cellular processes, it also functions as a mediator of lncRNAs and circRNAs. Therefore, miR-532 can be considered as a non-invasive diagnostic/prognostic marker as well as a therapeutic target in cancer patients.</p></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"829 ","pages":"Article 111874"},"PeriodicalIF":1.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141581906","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
A pilot study exploring time- and dose-dependent DNA damage and chromosomal instability caused by benzo[a]pyrene in two urothelial cell types 探索苯并[a]芘在两种尿道细胞类型中造成的时间和剂量依赖性 DNA 损伤和染色体不稳定性的试验性研究
IF 2.3 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-01-01 Epub Date: 2024-03-24 DOI: 10.1016/j.mrfmmm.2024.111855
Jonas Wohlfahrt, Nisha Verma, Rasha Alsaleh, Christian Kersch, Simone Schmitz-Spanke
{"title":"A pilot study exploring time- and dose-dependent DNA damage and chromosomal instability caused by benzo[a]pyrene in two urothelial cell types","authors":"Jonas Wohlfahrt,&nbsp;Nisha Verma,&nbsp;Rasha Alsaleh,&nbsp;Christian Kersch,&nbsp;Simone Schmitz-Spanke","doi":"10.1016/j.mrfmmm.2024.111855","DOIUrl":"https://doi.org/10.1016/j.mrfmmm.2024.111855","url":null,"abstract":"<div><p>Environmental and occupational exposure to polycyclic aromatic hydrocarbons (PAHs) is associated with adverse health effects in humans. Uncertainty exists regarding the causation of urinary bladder cancer by benzo[<em>a</em>]pyrene (B[<em>a</em>]P) due to a lack of sufficient data. In this work, we focused on <em>in-vitro</em> DNA damage and the formation of micronuclei and chromosomal aberrations as predictors of cancer risk, applying a wide range of dosages and time periods to quantify the onset, intensity, and duration of the response. We chose two urothelial cell types to compare susceptibility and the ability to increase the malignity of a pre-existing bladder cancer: a cancer cell line (T24) and a pooled sample of primary urinary bladder epithelia cells (PUBEC) from pigs. The highest level of DNA damage assessed by comet assay was observed following 24-h treatment in both cell types, whereas PUBEC cells were clearly more susceptible. Even 4-h treatment induced DNA damage in PUBEC cells with benchmark doses of 0.0027 µM B[<em>a</em>]P and 0.00023 µM after 4-h and 24-h exposure, respectively. Nearly no effect was observed for periods of 48 h. The frequency of micronucleus formation increased more markedly in T24 cells, particularly with 24-h treatment. In PUBEC cells, 48-h exposure notably induced the formation of nucleoplasmic bridges and nuclear buds. Even though only one biological replicate was studied due to the sophisticated study design, our results give a strong indication of the potential of B[<em>a</em>]P to induce and increase malignity in human-relevant cell types.</p></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"828 ","pages":"Article 111855"},"PeriodicalIF":2.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0027510724000058/pdfft?md5=7c8149ac68a4bfa678c29de498ac213f&pid=1-s2.0-S0027510724000058-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140341966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inducing mutation and ascertaining lethal dosage of in vitro cultures of banana cv. Ney Poovan to ethyl methane sulfonate 诱导香蕉变种 Ney Poovan 对甲烷磺酸乙酯的体外培养变异并确定致死剂量
IF 2.3 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-01-01 Epub Date: 2023-12-19 DOI: 10.1016/j.mrfmmm.2023.111850
C.Y. Shalini Udaya
{"title":"Inducing mutation and ascertaining lethal dosage of in vitro cultures of banana cv. Ney Poovan to ethyl methane sulfonate","authors":"C.Y. Shalini Udaya","doi":"10.1016/j.mrfmmm.2023.111850","DOIUrl":"10.1016/j.mrfmmm.2023.111850","url":null,"abstract":"<div><p><span><span>In vitro mutation breeding in vegetatively propagated crops like banana offers a benefit in screening for beneficial variants in plant cells or cultured tissues. An attempt was made to induce mutants and determine the lethal dose, as it is the prerequisite to optimize the concentration and duration of the mutagen used to recover a larger population in mutation research. </span>Shoot tip cultures<span> were treated for 2 and 4 h at six different EMS<span> concentrations ranging from 80 mM to 160 mM, whereas proliferating multiple shoots were exposed for 30 and 60 min at six different EMS concentrations ranging from 8 mM to 40 mM. Survival percentage, shoot length, and number of shoots reduced linearly and significantly as concentration and duration increased in both shoot tips and proliferating multiple buds. The probit curve-based analysis of mortality of treated explants revealed that the LD</span></span></span><sub>50</sub> was 155.83 mM for 2 h and 113.72 mM for 4 h, respectively for shoot tip cultures, whereas for proliferating multiple buds, the LD<sub>50</sub> value was adjusted to 39.11 mM for 30 min and 30.41 mM for 60 min. 160 mM EMS for 4 h resulted in a shorter shoot, a longer rooting duration, a lesser number of roots, and decreased root development. In proliferating multiple shoots, the smallest shoot, longest rooting duration, least number of roots, and shortest root were observed in 40 mM EMS for 60 min. Similar reductions in growth parameters were observed in proliferating multiple shoots at higher exposure to EMS for a longer duration.</p></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"828 ","pages":"Article 111850"},"PeriodicalIF":2.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138818994","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
Higher TP53 somatic mutation prevalence from liquid biopsy analysis in ever smoker non-small-cell lung cancer patients 从不吸烟的非小细胞肺癌患者的液体活检分析中发现更高的TP53体细胞突变患病率
IF 2.3 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-01-01 Epub Date: 2023-11-28 DOI: 10.1016/j.mrfmmm.2023.111847
Haktan Bağış Erdem , Mustafa Tarık Alay , Zeynep Özdemir , Ezgi Çevik , Öztürk Ateş , Cengiz Karaçin , İbrahim Şahin , Mutlu Doğan , Taha Bahsi
{"title":"Higher TP53 somatic mutation prevalence from liquid biopsy analysis in ever smoker non-small-cell lung cancer patients","authors":"Haktan Bağış Erdem ,&nbsp;Mustafa Tarık Alay ,&nbsp;Zeynep Özdemir ,&nbsp;Ezgi Çevik ,&nbsp;Öztürk Ateş ,&nbsp;Cengiz Karaçin ,&nbsp;İbrahim Şahin ,&nbsp;Mutlu Doğan ,&nbsp;Taha Bahsi","doi":"10.1016/j.mrfmmm.2023.111847","DOIUrl":"10.1016/j.mrfmmm.2023.111847","url":null,"abstract":"<div><h3>Objective</h3><p>Cigarette smoking is a primary risk factor, linked to 80% of LC deaths. TP53, a key gene, is implicated in various cancers, with TP53 alterations in 36.7% of cancers. This research aims to investigate TP53 mutations detected in NSCLC patients by liquid biopsy and explore the relationship between these mutations and smoking history.</p></div><div><h3>Material and method</h3><p>The study enrolled a total of 340 patients diagnosed with non-small cell lung cancer (NSCLC). For sequencing, the Illumina NextSeq 500 system was utilized. The oncogenicity of the variants was assessed according to the ClinGen/CGC/VICC SOP and the variants were categorized into four tiers according to AMP/ASCO/CAP.</p></div><div><h3>Results</h3><p>The most common mutations were in TP53 (48.7%), followed by EGFR, PIK3CA, and PTEN. Missense mutations<span> were frequent, with TP53 and EGFR having higher rates in ever-smokers. No indels or complex mutations were found in ever-smokers. Patient age ranged from 20 to 86 years. Tier I-II variants were more common in ever-smokers, while Tier III variants were prevalent in never-smokers. TP53 mutations were more frequent in ever-smokers, showing a strong association with smoking. Domain distribution showed differences in PIK3CA. Transversion/transition ratios varied by gene and smoking status.</span></p></div><div><h3>Discussion</h3><p>The presence of TP53 mutations is strongly associated with both cigarette smoking and elevated Tv/Ti ratios. The tier status of TP53, EGFR, and PTEN variants does not show a specific domain distribution, but interesting associations are observed between the tier status and domain distribution in PIK3CA variants. Therefore, further comprehensive investigations are needed to explore this entity, as well as the underlying factors contributing to the increased Tv/Ti rates in the TP53 gene. Such research will provide deeper insights into the genetic alterations associated with smoking and tumor heterogeneity, ultimately aiding in the development of targeted therapies.</p></div>","PeriodicalId":49790,"journal":{"name":"Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis","volume":"828 ","pages":"Article 111847"},"PeriodicalIF":2.3,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138496271","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
Platinum-based targeted chemotherapies and reversal of cisplatin resistance in non-small cell lung cancer (NSCLC) 铂类靶向化疗和逆转非小细胞肺癌(NSCLC)的顺铂耐药性
IF 2.3 4区 医学
Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis Pub Date : 2024-01-01 Epub Date: 2024-03-19 DOI: 10.1016/j.mrfmmm.2024.111856
Hassaan Umar , Habibah A. Wahab , Ali Attiq , Muhammad Wahab Amjad , Syed Nasir Abbas Bukhari , Waqas Ahmad
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