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Abstract 2409: The regulation of mitochondria metabolism is correlated with gemcitabine resistance in MIA-PaCa-2 cell line 摘要:线粒体代谢调控与MIA-PaCa-2细胞株耐吉西他滨相关
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-2409
Rina Fujiwara-Tani, Shingo Kishi, S. Mori, H. Kuniyasu
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引用次数: 0
Abstract LB201: Understanding genetic variation in cancer using nanopore targeted sequencing LB201:利用纳米孔靶向测序了解癌症基因变异
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-LB201
S. Iyer, M. Kramer, Sara Goodwin, W. McCombie
{"title":"Abstract LB201: Understanding genetic variation in cancer using nanopore targeted sequencing","authors":"S. Iyer, M. Kramer, Sara Goodwin, W. McCombie","doi":"10.1158/1538-7445.AM2021-LB201","DOIUrl":"https://doi.org/10.1158/1538-7445.AM2021-LB201","url":null,"abstract":"","PeriodicalId":18754,"journal":{"name":"Molecular and Cellular Biology / Genetics","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80537137","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
Abstract 1969: PTEN plays a role in histone modifications during mitosis 摘要1969:PTEN在有丝分裂过程中参与组蛋白修饰
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-1969
B. Choi, T. Colon, Eunji Lee, Ziyue Kou, Wei Dai
{"title":"Abstract 1969: PTEN plays a role in histone modifications during mitosis","authors":"B. Choi, T. Colon, Eunji Lee, Ziyue Kou, Wei Dai","doi":"10.1158/1538-7445.AM2021-1969","DOIUrl":"https://doi.org/10.1158/1538-7445.AM2021-1969","url":null,"abstract":"","PeriodicalId":18754,"journal":{"name":"Molecular and Cellular Biology / Genetics","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80564227","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
Abstract 2367: Role of miR-34a-MET axis in head and neck cancer squamous cell carcinoma 2367: miR-34a-MET轴在头颈癌鳞状细胞癌中的作用
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-2367
Xun Wu, Y. Cheng, Methew Matthen, A. Yoon, G. Schwartz, S. Bala, Alison M. Taylor, F. Momen-Heravi
{"title":"Abstract 2367: Role of miR-34a-MET axis in head and neck cancer squamous cell carcinoma","authors":"Xun Wu, Y. Cheng, Methew Matthen, A. Yoon, G. Schwartz, S. Bala, Alison M. Taylor, F. Momen-Heravi","doi":"10.1158/1538-7445.AM2021-2367","DOIUrl":"https://doi.org/10.1158/1538-7445.AM2021-2367","url":null,"abstract":"","PeriodicalId":18754,"journal":{"name":"Molecular and Cellular Biology / Genetics","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80661452","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
Abstract 2073: Co-Targeting PARP and ATR in biliary tract cancer 摘要:PARP和ATR联合靶向治疗胆道肿瘤
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-2073
Ah-Rong Nam, M. Jin, K. Oh, Hye-Rim Seo, Jae-Min Kim, J. Bang, J. Yoon, T. M. Kim, D. Oh
{"title":"Abstract 2073: Co-Targeting PARP and ATR in biliary tract cancer","authors":"Ah-Rong Nam, M. Jin, K. Oh, Hye-Rim Seo, Jae-Min Kim, J. Bang, J. Yoon, T. M. Kim, D. Oh","doi":"10.1158/1538-7445.AM2021-2073","DOIUrl":"https://doi.org/10.1158/1538-7445.AM2021-2073","url":null,"abstract":"","PeriodicalId":18754,"journal":{"name":"Molecular and Cellular Biology / Genetics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83030360","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
Abstract 2022: Palmitate promotes breast cancer progression in vitro through induction of a senescent-like phenotype in fibroblasts 摘要2022:棕榈酸酯通过诱导成纤维细胞衰老样表型促进乳腺癌的体外进展
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-2022
B. Harlow, Albert R. Davalos, A. Brenner, C. Jolly, S. Tiziani, S. Hursting, Linda A. Degraffenried
{"title":"Abstract 2022: Palmitate promotes breast cancer progression in vitro through induction of a senescent-like phenotype in fibroblasts","authors":"B. Harlow, Albert R. Davalos, A. Brenner, C. Jolly, S. Tiziani, S. Hursting, Linda A. Degraffenried","doi":"10.1158/1538-7445.AM2021-2022","DOIUrl":"https://doi.org/10.1158/1538-7445.AM2021-2022","url":null,"abstract":"","PeriodicalId":18754,"journal":{"name":"Molecular and Cellular Biology / Genetics","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82219471","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
Abstract LB211: Epstein-Barr virus BART lncRNAs induceIKZF3/Aiolos to maintain EBV latency and promote tumorigenicity in nasopharyngeal carcinoma LB211: eb病毒BART lncRNAs诱导eikzf3 /Aiolos维持eb病毒在鼻咽癌中的潜伏期并促进其致瘤性
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-LB211
Songtao He, Jiayan Liu, Honglin Chen
Epstein-Barr virus (EBV) maintains latency in its associated tumors, including nasopharyngeal carcinoma (NPC), expressing very few viral proteins but abundant levels of noncoding RNAs (mainly EBERs and BARTs) in NPC cells. We found that IKZF3/Aiolos is a downstream target of BART lncRNAs in NPC cells. The functions of BART lncRNAs and IKZF3 in EBV latency and pathogenesis of NPC remain elusive. In this study, meta-analysis of eight EBV-associated studies showed that IKZF3/Aiolos was consistently upregulated in EBV-infected NPC cells. Our study further showed that transcription of IKZF3/Aiolos is highly upregulated in EBV-infected NPC cells and clinical tissue samples due to the action of EBV encoded BART lncRNAs, with IKZF3/Aiolos was expressed at higher levels in late stage (stage III & IV) NPC patients than in early stage (stage I & II) disease. Secondly, we found that IKZF3/Aiolos was upregulated in BART-activated NPC cells but downregulated in BART-knockdown NPC cells. In addition, this study further demonstrated that IKZF3/Aiolos modulates transcription of EBV BZLF1 and the cellular gene, LRIG1, to maintain EBV latency and promote NPC tumorigenesis in vitro and in vivo. Our results showed that the EBV lytic reactivator BZLF1 was upregulated in IKZF3/Aiolos knockout or Aiolos inhibitor-treated NPC cells. ChIP-qPCR, immunoprecipitation and immunofluorescence analyses further revealed that IKZF3/Aiolos induces H3K27 deacetylation to silence expression of BZLF1 and maintain EBV latency in NPC cells. Moreover, functional analyses and western blotting showed that IKZF3/Aiolos inhibited the tumor suppressor, LRIG1, to upregulate expression and phosphorylation of the cellular proto-oncogene Erb-B2 for NPC pathogenesis. Sphere- and colony-formation assays demonstrated that IKZF3/Aiolos enhances growth of NPC cells in vitro, and in vivo experiments further showed that IKZF3/Aiolos promotes tumorigenicity of NPC cells in NOD mice. Mechanically, we found that the expression of EBV lytic reactivator BZLF1 and cellular LRIG1 were negatively regulated by BART lncRNA/IKZF3/Aiolos regulatory machinery in NPC cells, while Erb-B2 was positively regulated, which indicated that IKZF3/Aiolos is a new biomarker for NPC and may lead to the development of novel diagnostic tests and treatments for NPC. Citation Format: Songtao He, Jiayan Liu, Bobo Wing-Yee Mok, Sai Wah Tsao, Honglin Chen. Epstein-Barr virus BART lncRNAs induce IKZF3/Aiolos to maintain EBV latency and promote tumorigenicity in nasopharyngeal carcinoma. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 3748.
eb病毒(EBV)在包括鼻咽癌(NPC)在内的相关肿瘤中保持潜伏期,在鼻咽癌细胞中表达很少的病毒蛋白,但表达丰富的非编码rna(主要是EBERs和BARTs)。我们发现IKZF3/Aiolos是鼻咽癌细胞中BART lncRNAs的下游靶标。BART lncrna和IKZF3在EBV潜伏期和鼻咽癌发病机制中的作用尚不清楚。在这项研究中,对8项ebv相关研究的荟萃分析显示,IKZF3/Aiolos在ebv感染的鼻咽癌细胞中持续上调。我们的研究进一步表明,由于EBV编码的BART lncRNAs的作用,IKZF3/Aiolos的转录在EBV感染的鼻咽癌细胞和临床组织样本中高度上调,并且IKZF3/Aiolos在晚期(III期和IV期)鼻咽癌患者中的表达水平高于早期(I期和II期)鼻咽癌患者。其次,我们发现IKZF3/Aiolos在bart激活的NPC细胞中表达上调,而在bart敲除的NPC细胞中表达下调。此外,本研究进一步证明IKZF3/Aiolos通过调控EBV BZLF1和细胞基因LRIG1的转录,维持EBV潜伏期,促进鼻咽癌的发生。我们的研究结果表明,EBV裂解再激活物BZLF1在IKZF3/Aiolos敲除或Aiolos抑制剂处理的鼻咽癌细胞中上调。ChIP-qPCR、免疫沉淀和免疫荧光分析进一步表明,IKZF3/Aiolos诱导H3K27去乙酰化,沉默BZLF1的表达,维持鼻咽癌细胞的EBV潜伏期。此外,功能分析和western blotting显示,IKZF3/Aiolos抑制肿瘤抑制因子LRIG1,上调细胞原癌基因erbb - b2的表达和磷酸化,参与鼻咽癌的发病。球形和集落形成实验表明,IKZF3/Aiolos能促进鼻咽癌细胞的体外生长,体内实验进一步表明,IKZF3/Aiolos能促进NOD小鼠鼻咽癌细胞的致瘤性。结果表明,BART lncRNA/IKZF3/Aiolos调控机制对鼻咽癌细胞中EBV溶解再激活物BZLF1和细胞LRIG1的表达有负调控作用,而erbb - b2的表达有正调控作用,提示IKZF3/Aiolos是鼻咽癌新的生物标志物,可能为鼻咽癌的诊断和治疗提供新途径。引用格式:何松涛,刘家燕,莫永仪,曹世华,陈宏林。Epstein-Barr病毒BART lncRNAs诱导IKZF3/Aiolos维持EBV潜伏期并促进鼻咽癌的致瘤性[摘要]。见:2023年美国癌症研究协会年会论文集;第一部分(定期和邀请摘要);2023年4月14-19日;费城(PA): AACR;癌症杂志,2023;83(7 -增刊):摘要第3748期。
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引用次数: 0
Abstract 2452: Metformin administration in hypoglycemia compromises cancer cell viability in glioblastoma initiating cells 2452:低血糖患者给予二甲双胍会影响胶质母细胞瘤起始细胞的癌细胞活力
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-2452
F. Cianci, R. Cazzoli, I. Verduci, S. Minucci, M. Mazzanti
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引用次数: 0
Abstract 2238: A novel comprehensive breakpoint-targeted assay for clinically actionable RNA fusions and aberrant RNAs in solid tumors 摘要2238:一种新型的综合断点靶向检测方法,用于检测实体肿瘤中临床可操作的RNA融合和异常RNA
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-2238
F. Lopez-Diaz, S. Rivera, Chen-Yin Ou, C. Magnan, Brad B Thomas, T. Gyuris, Y. Mou, Segun Jung, Madhuri Paul, Forrest Blocker, Shari Brown, Jacqueline K. Lekostaj, Ryan P. Bender, S. Agersborg, L. Weiss, V. Funari
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引用次数: 0
Abstract 2106: Combined deacetylase and bromodomain inhibition downregulates ERCC2 and suppresses growth of metastatic colon cancer cells 摘要:脱乙酰酶和溴域联合抑制下调ERCC2,抑制转移性结肠癌细胞的生长
Pub Date : 2021-07-01 DOI: 10.1158/1538-7445.AM2021-2106
Sabeeta Kapoor, Trace Gustafson, Mutian Zhang, Ying-Shiuan Chen, Jia Li, Nhung Nguyen, J. E. Pérez, W. Dashwood, P. Rajendran, R. Dashwood
DNA repair genes have potential clinical value in predicting cancer prognosis and treatment outcomes. Nucleotide excision repair (NER) proteins like ERCC2 play a critical role in maintaining genome integrity by recognizing and unwinding DNA at sites of damage1.Aberrant expression of ERCC2 alters NER capacity, influencing treatment outcomes2. The current investigation examined the expression of ERCC2 following epigenetic combination treatment in colorectal cancer (CRC) cells and preclinical models. Attention was drawn to ERCC2 based on three observations. First, from online databases, when ERCC2 was overexpressed in colon tumors the corresponding CRC patients had reduced overall survival3. Second, ERCC2 was the most highly downregulated gene when dietary histone deacetylase 3 (HDAC3) inhibitor sulforaphane (SFN) was combined withJQ1, an inhibitor of the bromodomain and extra terminal domain family, in human colon cancer cells and in colon polyps from the polyposis in rat colon (Pirc) model4. Third, as reported here for the first time, RNA-seq analyses of Pirc colon polyps from rats treated withJQ1 and the SFN analog 6-SFN5 identified Ercc2 as the most highly downregulated gene. RNA-seq data were corroborated by RT-qPCR and immunoblotting experiments. There is much interest in combination approaches that target epigenetic ‘readers, writers, and erasers9 that are deregulated in cancer and other pathologies. The current work identified promising second-generation inhibitors with enhanced synergy and antitumor efficacy, especially in metastatic cells cultured in three-dimensions. Drug combinations decreased HDAC3, BRD4 and ERCC2 expression, while DNA damage and apoptosis markers were increased both in spheroids and in a mouse xenograft model. This investigation has potential clinical relevance for the identification of robust biomarkers that predict enhanced antitumor outcomes in CRC patients.1. Gillet LC, Scharer OD. Molecular mechanisms of mammalian global genome nucleotide excision repair. Chem Rev 2006;106:253-76.2. Shuck SC, Short EA, Turchi JJ. Eukaryotic nucleotide excision repair: from understanding mechanisms to influencing biology. Cell Res 2008;18:64-72.3. Liu J et al., The Differential Expression of Core Genes in Nucleotide Excision Repair Pathway Indicates Colorectal Carcinogenesis and Prognosis. Biomed Res Int 2018;2018:9651320.4. Rajendran P et al., Acetylation of CCAR2 establishes a BET/BRD9 acetyl switch in response to combined deacetylase and bromodomain inhibition. Cancer Res 2019;79:918-27.5. Rajendran Pet al., HDAC turnover, CtIP acetylation and dysregulated DNA damage signaling in colon cancer cell treated with sulforaphane and related dietary isothiocyanates. Epigenetics 2013;8:612-23. Citation Format: Sabeeta Kapoor, Trace Gustafson, Mutian Zhang, Ying-Shiuan Chen, Jia Li, Nhung Nguyen, Jorge Enrique Perez, Wan Mohaiza Dashwood, Praveen Rajendran, Roderick Dashwood. Combined deacetylase and bromodomain inhibition downregulates
DNA修复基因在预测肿瘤预后和治疗结果方面具有潜在的临床价值。核苷酸切除修复(NER)蛋白如ERCC2通过识别和解绕损伤位点的DNA,在维持基因组完整性方面发挥关键作用。ERCC2的异常表达可改变NER容量,影响治疗结果2。目前的研究在结直肠癌(CRC)细胞和临床前模型中检测了表观遗传联合治疗后ERCC2的表达。注意到ERCC2是基于三个观察结果。首先,从在线数据库中,当ERCC2在结肠肿瘤中过表达时,相应的结直肠癌患者的总生存率降低3。其次,当膳食组蛋白去乙酰化酶3 (HDAC3)抑制剂萝卜硫素(SFN)与人结肠癌细胞和大鼠结肠息肉病(Pirc)模型结肠息肉中的bromodomain和extra terminal domain家族抑制剂jq1联合使用时,ERCC2是下调幅度最大的基因4。第三,正如本文首次报道的那样,对jq1和SFN类似物6-SFN5处理的大鼠的Pirc结肠息肉的RNA-seq分析发现,Ercc2是下调程度最高的基因。RNA-seq数据经RT-qPCR和免疫印迹实验证实。人们对针对在癌症和其他疾病中不受控制的表观遗传“读取器”、“写入器”和“擦除器”的组合方法很感兴趣。目前的工作确定了有希望的第二代抑制剂,具有增强的协同作用和抗肿瘤功效,特别是在三维培养的转移细胞中。药物组合降低了HDAC3、BRD4和ERCC2的表达,而在球体和小鼠异种移植模型中,DNA损伤和凋亡标志物均增加。这项研究对于鉴定出预测结直肠癌患者抗肿瘤结果的强大生物标志物具有潜在的临床意义。Gillet LC, Scharer OD。哺乳动物全基因组核苷酸切除修复的分子机制。化学Rev 2006;106:253-76.2。Shuck SC, Short EA, Turchi JJ。真核生物核苷酸切除修复:从理解机制到影响生物学。生物医学进展2008;18:64-72.3。刘杰等,核苷酸切除修复通路核心基因的差异表达指示结直肠癌的发生与预后。中国生物医学工程学报,2018;39(2):457 - 457。Rajendran P等人,CCAR2的乙酰化在脱乙酰酶和溴结构域联合抑制下建立了BET/BRD9乙酰化开关。巨蟹座:2019;79:918-27.5。Rajendran等,萝卜硫素和相关膳食异硫氰酸盐治疗结肠癌细胞HDAC转换、CtIP乙酰化和DNA损伤信号失调。实验胚胎学2013;8:612-23。引文格式:Sabeeta Kapoor, Trace Gustafson,张慕田,陈英轩,李佳,Nhung Nguyen, Jorge Enrique Perez, Wan Mohaiza Dashwood, Praveen Rajendran, Roderick Dashwood。脱乙酰酶联合溴域抑制下调ERCC2,抑制转移性结肠癌细胞生长[摘要]。见:美国癌症研究协会2021年年会论文集;2021年4月10日至15日和5月17日至21日。费城(PA): AACR;癌症杂志,2021;81(13 -增刊):摘要第2106期。
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