Journal of Cancer Prevention最新文献

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Trefoil Factor 1 Suppresses Epithelial-mesenchymal Transition through Inhibition of TGF-beta Signaling in Gastric Cancer Cells. 三叶因子1通过抑制胃癌细胞tgf - β信号传导抑制上皮-间质转化。
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-06-30 DOI: 10.15430/JCP.2021.26.2.137
Da-Young Lee, Moon-Young Song, Eun-Hee Kim
{"title":"Trefoil Factor 1 Suppresses Epithelial-mesenchymal Transition through Inhibition of TGF-beta Signaling in Gastric Cancer Cells.","authors":"Da-Young Lee,&nbsp;Moon-Young Song,&nbsp;Eun-Hee Kim","doi":"10.15430/JCP.2021.26.2.137","DOIUrl":"https://doi.org/10.15430/JCP.2021.26.2.137","url":null,"abstract":"<p><p>Gastric cancer is a malignancy with high incidence and mortality worldwide. In gastric cancer, epithelial-mesenchymal transition (EMT) and metastasis further increase the mortality rate. Trefoil factor 1 (TFF1) has been reported as a protective factor in the gastric mucosa. In this study, TFF1 inhibited the migration and invasive capability of gastric cancer cells. Elevated TFF1 levels induced the expression of E-cadherin, the epithelial marker, and reduced the expression of N-cadherin, vimentin, Snail, Twist, Zinc finger E-box binding homeobox (ZEB) 1 and ZEB2, well-known repressors of E-cadherin expression. In addition, the expression of matrix metalloproteinase (MMP)-2, MMP-7 and MMP-9, which are major markers of cancer metastasis, was suppressed by TFF1. Upregulation of TFF1 inhibited TGF-β, a major signaling for EMT induction, and the phosphorylation of Smad2/3 activated by TGF-β in AGS cells. In conclusion, TFF1 inhibits EMT through suppression of TGF-β signaling in AGS cells, which might be used in therapeutic strategies for reducing metastatic potential and invasiveness of these cells.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 2","pages":"137-144"},"PeriodicalIF":2.5,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/41/77/jcp-26-2-137.PMC8249209.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39181436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Role of Sex-specific Long Non-coding RNAs in Cancer Prevention and Therapy. 性别特异性长链非编码rna在癌症防治中的作用。
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-06-30 DOI: 10.15430/JCP.2021.26.2.98
Hye Kyung Song, Sun Young Kim
{"title":"The Role of Sex-specific Long Non-coding RNAs in Cancer Prevention and Therapy.","authors":"Hye Kyung Song,&nbsp;Sun Young Kim","doi":"10.15430/JCP.2021.26.2.98","DOIUrl":"https://doi.org/10.15430/JCP.2021.26.2.98","url":null,"abstract":"<p><p>The functions of a large number of non-coding genes in human DNA have yet to be accurately identified. Long non-coding RNA (lncRNA) measuring 10 kb or less in length regulates transcription or post-transcriptional events. The lncRNAs have attracted increased attention of researchers in recent years. In this review, we summarize the recently published lncRNAs which are known to influence cancer development and progression. We also discuss recent studies investigating tumor-specific lncRNA expression. These lncRNAs provide very useful information that allows prediction of the degree of malignancy and a survival rate in cancer patients as clinically relevant biomarkers. Because symptoms and progression of cancer differ from onset to death between males and females, it is important to consider the gender of the patient when diagnosing cancer and predicting the progression. Considering the importance of gender difference, we also examine the influence of sex hormones involved in the expression and regulation of lncRNAs as biomarkers. Many of the lncRNAs examined in this review have been studied in cancers occurring in the female or male reproductive organs, but the association between lncRNAs and sex hormones has also been reported in common organs such as the lung, renal and colon. Although lncRNAs have not yet been widely used as definitive cancer indicators, recent studies have demonstrated the potential role of lncRNAs as biomarkers and therapeutic targets reflecting sex-specificity in a number of different cancers.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 2","pages":"98-109"},"PeriodicalIF":2.5,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/98/d9/jcp-26-2-98.PMC8249206.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39181516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Nanoparticles: Weighing the Pros and Cons from an Eco-genotoxicological Perspective. 纳米粒子:从生态遗传毒理学角度权衡利弊。
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-06-30 DOI: 10.15430/JCP.2021.26.2.83
Preeyaporn Koedrith, Md Mujibur Rahman, Yu Jin Jang, Dong Yeop Shin, Young Rok Seo
{"title":"Nanoparticles: Weighing the Pros and Cons from an Eco-genotoxicological Perspective.","authors":"Preeyaporn Koedrith, Md Mujibur Rahman, Yu Jin Jang, Dong Yeop Shin, Young Rok Seo","doi":"10.15430/JCP.2021.26.2.83","DOIUrl":"10.15430/JCP.2021.26.2.83","url":null,"abstract":"<p><p>The exponential growth of nanotechnology and the industrial production have raised concerns over its impact on human and environmental health and safety (EHS). Although there has been substantial progress in the assessment of pristine nanoparticle toxicities, their EHS impacts require greater clarification. In this review, we discuss studies that have assessed nanoparticle eco-genotoxicity in different test systems and their fate in the environment as well as the considerable confounding factors that may complicate the results. We highlight key mechanisms of nanoparticle-mediated genotoxicity. Then we discuss the reliability of endpoint assays, such as the comet assay, the most favored assessment technique because of its versatility to measure low levels of DNA strand breakage, and the micronucleus assay, which is complementary to the former because of its greater ability to detect chromosomal DNA fragmentation. We also address the current recommendations on experimental design, including environmentally relevant concentrations and suitable exposure duration to avoid false-positive or -negative results. The genotoxicity of nanoparticles depends on their physicochemical features and the presence of co-pollutants. Thus, the effect of environmental processes (e.g., aggregation and agglomeration, adsorption, and transformation of nanoparticles) would account for when determining the actual genotoxicity relevant to environmental systems, and assay procedures must be standardized. Indeed, the engineered nanoparticles offer potential applications in different fields including biomedicine, environment, agriculture, and industry. Toxicological pathways and the potential risk factors related to genotoxic responses in biological organisms and environments need to be clarified before appropriate and sustainable applications of nanoparticles can be established.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 2","pages":"83-97"},"PeriodicalIF":2.5,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/85/53/jcp-26-2-83.PMC8249203.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39181515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanistic Targets of Diallyl Trisulfide in Human Breast Cancer Cells Identified by RNA-seq Analysis. 通过 RNA-seq 分析确定二烯丙基三硫醚在人类乳腺癌细胞中的机制靶点
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-06-30 DOI: 10.15430/JCP.2021.26.2.128
Eun-Ryeong Hahm, Su-Hyeong Kim, Sivapar V Mathan, Rana P Singh, Shivendra V Singh
{"title":"Mechanistic Targets of Diallyl Trisulfide in Human Breast Cancer Cells Identified by RNA-seq Analysis.","authors":"Eun-Ryeong Hahm, Su-Hyeong Kim, Sivapar V Mathan, Rana P Singh, Shivendra V Singh","doi":"10.15430/JCP.2021.26.2.128","DOIUrl":"10.15430/JCP.2021.26.2.128","url":null,"abstract":"<p><p>Diallyl trisulfide (DATS), a metabolic by-product of processed garlic, is highly effective in inhibiting growth of human breast cancer cells in vitro and in vivo, but the underlying mechanisms are still not fully understood. In this study, we performed RNA-seq analyses using luminal-type (MCF-7) and basal-like (MDA-MB-231) human breast cancer cells to identify mechanistic targets of DATS. The Reactome Pathway Analysis revealed upregulation of genes associated with SLIT/ROBO tumor suppressor signaling following DATS treatment in both MCF-7 and MDA-MB-231 cells. However, the expression of SLIT2 and ROBO1 proteins or their downstream target C-X-C motif chemokine receptor 4 was not affected by DATS treatment in both cell lines. The Reactome as well as the Gene Ontology Pathways Analyses of the RNA-seq data from DATS-treated cells indicated downregulation of genes associated with G<sub>2</sub>/M phase cell cycle arrest in comparison with vehicle-treated control cells. Consistent with the RNA-seq data, DATS treatment caused a significant increase in the fraction of the G<sub>2</sub>/M population in both cell lines when compared to corresponding control cells. In addition, Ser10 phosphorylation of histone H3, a mitotic marker, was also increased significantly following DATS treatment in MCF-7 and MDA-MB-231 cells. These results indicate that while SLIT/ROBO signaling is not affected by DATS treatment, cell cycle arrest likely contributes to the antitumor effect of this phytochemical.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 2","pages":"128-136"},"PeriodicalIF":2.5,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/f0/3f/jcp-26-2-128.PMC8249207.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39181435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cryptotanshinone Prevents the Binding of S6K1 to mTOR/Raptor Leading to the Suppression of mTORC1-S6K1 Signaling Activity and Neoplastic Cell Transformation. 隐丹参酮阻止S6K1与mTOR/Raptor结合,抑制mTORC1-S6K1信号活性和肿瘤细胞转化
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-06-30 DOI: 10.15430/JCP.2021.26.2.145
Nam Ho Jeoung, Ji Yun Jeong, Bong Seok Kang
{"title":"Cryptotanshinone Prevents the Binding of S6K1 to mTOR/Raptor Leading to the Suppression of mTORC1-S6K1 Signaling Activity and Neoplastic Cell Transformation.","authors":"Nam Ho Jeoung,&nbsp;Ji Yun Jeong,&nbsp;Bong Seok Kang","doi":"10.15430/JCP.2021.26.2.145","DOIUrl":"https://doi.org/10.15430/JCP.2021.26.2.145","url":null,"abstract":"<p><p>Cryptotanshinone is known for its inhibitory activity against tumorigenesis in various human cancer cells. However, exact mechanisms underlying the anticancer effects of cryptotanshinone are not fully elucidated. Here, we propose a plausible molecular mechanism, wherein cryptotanshinone represses rapamycin-sensitive mTORC1/S6K1 mediated cancer cell growth and cell transformation. We investigated the various effects of cryptotanshinone on the mTORC1/S6K1 axis, which is associated with the regulation of cell growth in response to nutritional and growth factor signals. We found that cryptotanshinone specifically inhibited the mTORC1-mediated phosphorylation of S6K1, which consequently suppressed the clonogenicity of SK-Hep1 cells and the neoplastic transformation of JB6 Cl41 cells induced by insulin-like growth factor-1. Finally, we observed that cryptotanshinone prevented S6K1 from binding to the Raptor/mTOR complex, rather than regulating mTOR and its upstream pathway. Overall, our findings provide a novel mechanism underlying anti-cancer effects cryptotanshinone targeting mTORC1 signaling, contributing to the development of anticancer agents involving metabolic cancer treatment.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 2","pages":"145-152"},"PeriodicalIF":2.5,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a9/cc/jcp-26-2-145.PMC8249204.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39181437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Income and Education Inequalities in Brain and Central Nervous System Cancer Incidence in Canada: Trends over Two Decades. 加拿大脑和中枢神经系统癌症发病率的收入和教育不平等:二十年来的趋势。
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-06-30 DOI: 10.15430/JCP.2021.26.2.110
Alysha Roberts, Min Hu, Mohammad Hajizadeh
{"title":"Income and Education Inequalities in Brain and Central Nervous System Cancer Incidence in Canada: Trends over Two Decades.","authors":"Alysha Roberts,&nbsp;Min Hu,&nbsp;Mohammad Hajizadeh","doi":"10.15430/JCP.2021.26.2.110","DOIUrl":"https://doi.org/10.15430/JCP.2021.26.2.110","url":null,"abstract":"<p><p>The socioeconomic gradient of brain and central nervous system (CNS) cancer incidence in Canada is poorly understood. This study aimed to measure socioeconomic inequalities in brain and CNS cancer incidence in Canada from 1992 to 2010. Using a unique census division level dataset (n = 280) pooled from the Canadian Cancer Registry (CCR), the Canadian Census of Population and the National Household Survey, we measured brain and CNS cancer incidence in Canada. The age-adjusted concentration index (C) was used to measure income- and education-related inequalities in brain and CNS cancers in Canada, and for men and women, separately. Time trend analyses were conducted to examine the changes in socioeconomic inequalities in brain and CNS cancers in Canada over time. The results indicated that the crude brain and CNS cancer incidence increased from 7.29 to 8.17 per 100,000 (annual percentage change: 0.70) over the study period. The age-adjusted C results suggested that the brain and CNS cancer incidence was not generally significantly different for census division of different income and educational levels. There was insufficient evidence to support changes in income and education-related inequalities over time. Since the incidence of brain and CNS cancers in Canada showed no significant association with socioeconomic status, future cancer control programs should focus on other risk factors for this cancer subset.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 2","pages":"110-117"},"PeriodicalIF":2.5,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/5d/a7/jcp-26-2-110.PMC8249205.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39181517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Protective Effects of Silibinin on Helicobacter pylori-induced Gastritis: NF-κB and STAT3 as Potential Targets. 水飞蓟宾对幽门螺杆菌性胃炎的保护作用:NF-κB和STAT3为潜在靶点。
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-06-30 DOI: 10.15430/JCP.2021.26.2.118
Kyunghwa Cho, Hee Geum Lee, Juan-Yu Piao, Su-Jung Kim, Hye-Kyung Na, Young-Joon Surh
{"title":"Protective Effects of Silibinin on <i>Helicobacter pylori</i>-induced Gastritis: NF-κB and STAT3 as Potential Targets.","authors":"Kyunghwa Cho,&nbsp;Hee Geum Lee,&nbsp;Juan-Yu Piao,&nbsp;Su-Jung Kim,&nbsp;Hye-Kyung Na,&nbsp;Young-Joon Surh","doi":"10.15430/JCP.2021.26.2.118","DOIUrl":"https://doi.org/10.15430/JCP.2021.26.2.118","url":null,"abstract":"<p><p>More than half of the world's populations are considered to be infected by <i>Helicobacter pylori</i>. It causes a chronic inflammation of the stomach, which is implicated in the pathogenesis of gastric ulcer and cancer. Silibinin, a polyphenolic flavonoid derived from milk thistle, has been known for its hepatoprotective effects, and recent studies have revealed its chemopreventive potential. In the present study, we examined the anti-inflammatory effects of silibinin in human gastric cancer MKN-1 cells and in the stomach of C57BL/6 mice infected by <i>H. pylori</i>. Pretreatment with silibinin attenuated the up-regulation of COX-2 and inducible nitric oxide synthase (iNOS) in <i>H. pylori</i>-infected MKN-1 cells and mouse stomach. In addition, the elevated translocation and DNA binding of NF-κB and STAT3 induced by <i>H. pylori</i> infection were inhibited by silibinin treatment. Moreover, <i>H. pylori</i> infection in combination with high salt diet resulted in dysplasia and hyperplasia in mouse stomach, and these pathological manifestations were substantially mitigated by silibinin administration. Taken together, these findings suggest that silibinin exerts anti-inflammatory effects against <i>H. pylori</i> infection through suppression of NF-κB and STAT3 and subsequently, expression of COX-2 and iNOS.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 2","pages":"118-127"},"PeriodicalIF":2.5,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/33/01/jcp-26-2-118.PMC8249208.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39181434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Understanding the Mechanistic Link between Bisphenol A and Cancer Stem Cells: A Cancer Prevention Perspective. 了解双酚 A 与癌症干细胞之间的机制联系:癌症预防视角》。
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-03-30 DOI: 10.15430/JCP.2021.26.1.18
Cassandra Winz, Nanjoo Suh
{"title":"Understanding the Mechanistic Link between Bisphenol A and Cancer Stem Cells: A Cancer Prevention Perspective.","authors":"Cassandra Winz, Nanjoo Suh","doi":"10.15430/JCP.2021.26.1.18","DOIUrl":"10.15430/JCP.2021.26.1.18","url":null,"abstract":"<p><p>Endocrine disruptors, such as bisphenol A (BPA), have become more frequently present in the environment as contaminants, especially in industrialized countries. Long-term effects of these environmental contaminants in humans are elusive. With their structural similarity to estrogen, many environmental contaminants including BPA, have been shown to mimic the biological functions of estrogen, potentially contributing to the development of breast cancer. It has been well established that BPA exerts estrogenic activity in animal models and in vitro systems. There is a concern for adverse effects from the exposure to BPA in regard to developmental and reproductive toxicities. However, the mechanisms by which BPA promotes breast cancer development remain unknown. Understanding the role of endocrine disruptors and their key mechanisms of action is important for public health, especially by providing a foundation for a better intervention approach in cancer prevention.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 1","pages":"18-24"},"PeriodicalIF":2.5,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8020171/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25581790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Nuclear Factor Erythroid 2-related Factor 2 Knockout Suppresses the Development of Aggressive Colorectal Cancer Formation Induced by Azoxymethane/Dextran Sulfate Sodium-Treatment in Female Mice. 核因子红系2相关因子2敲除抑制偶氮甲烷/葡聚糖硫酸钠治疗诱导的雌性小鼠侵袭性结直肠癌的形成
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-03-30 DOI: 10.15430/JCP.2021.26.1.41
Chin-Hee Song, Nayoung Kim, Ryoung Hee Nam, Soo In Choi, Changhee Kang, Jae Young Jang, Heewon Nho, Eun Shin, Ha-Na Lee
{"title":"Nuclear Factor Erythroid 2-related Factor 2 Knockout Suppresses the Development of Aggressive Colorectal Cancer Formation Induced by Azoxymethane/Dextran Sulfate Sodium-Treatment in Female Mice.","authors":"Chin-Hee Song,&nbsp;Nayoung Kim,&nbsp;Ryoung Hee Nam,&nbsp;Soo In Choi,&nbsp;Changhee Kang,&nbsp;Jae Young Jang,&nbsp;Heewon Nho,&nbsp;Eun Shin,&nbsp;Ha-Na Lee","doi":"10.15430/JCP.2021.26.1.41","DOIUrl":"https://doi.org/10.15430/JCP.2021.26.1.41","url":null,"abstract":"<p><p>Colon tumors develop more frequently in male than in female. Nuclear factor erythroid 2-related factor 2 (Nrf2) plays differential roles in the stage of tumorigenesis. The purpose of this study was to investigate the role of Nrf2 on colitis-associated tumorigenesis using Nrf2 knockout (KO) female mice. Azoxymethane (AOM) and dextran sulfate sodium (DSS)-treated wild-type (WT) and Nrf2 KO female mice were sacrificed at week 2 and 16 after AOM injection. Severity of colitis, tumor incidence, and levels of inflammatory mediators were evaluated in AOM/DSS-treated WT and Nrf2 KO mice. Furthermore, qRT-PCR, Western blot abnalysis, and ELISA were performed in colon tissues. At week 2, AOM/DSS-induced colon tissue damages were significantly greater in Nrf2 KO than in WT mice. At week 16, tumor numbers (> 2 mm size) were significantly lower in both the proximal and distal colon in Nrf2 KO compared to WT. The overall incidences of adenoma/cancer of the proximal colon and submucosal invasive cancer of the distal colon were reduced by Nrf2 KO. The mRNA and protein expression levels of NF-κB-related mediators (i.e., iNOS and COX-2) and Nrf2-related antioxidants (i.e., heme oxygenase-1 and glutamate-cysteine ligase catalytic subunit) were significantly lower in the Nrf2 KO than in WT mice. Interestingly, the protein level of 15-hydroxyprostaglandin dehydrogenase (15-PGDH) was higher in AOM/DSS-treated Nrf2 KO than in WT mice. Our results support the oncogenic effect of Nrf2 in the later stage of carcinogenesis and upregulation of tumor suppressor 15-PGDH might contribute to the repression of colitis-associated tumorigenesis in Nrf2 KO female mice.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 1","pages":"41-53"},"PeriodicalIF":2.5,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8020176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25581793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Promotion of Cervical Screening among Long-term Non-attendees by Human Papillomavirus Self-sampling. 利用人乳头瘤病毒自我抽样推广长期未参加子宫颈普查。
IF 2.5
Journal of Cancer Prevention Pub Date : 2021-03-30 DOI: 10.15430/JCP.2021.26.1.25
Avalon Ernstson, Ola Forslund, Christer Borgfeldt
{"title":"Promotion of Cervical Screening among Long-term Non-attendees by Human Papillomavirus Self-sampling.","authors":"Avalon Ernstson,&nbsp;Ola Forslund,&nbsp;Christer Borgfeldt","doi":"10.15430/JCP.2021.26.1.25","DOIUrl":"https://doi.org/10.15430/JCP.2021.26.1.25","url":null,"abstract":"<p><p>Cervical cancer is preventable through gynecological screening. To promote participation among non-attending women, self-collected vaginal samples for detection of high-risk human papillomavirus (hr-HPV) is an option. The aims of this study were to investigate the response of self-collected vaginal samples for hr-HPV testing among long-term non-attendees, to explore the attendance at follow-up among HPV-positive women, and to analyze the prevalence of hr-HPV and severe cervical dysplasia or cancer among the responders. A vaginal self-sampling kit was sent to 19,766 women aged 30-70 years who had not provided a cervical screening sample for ≥ 7 years in Skåne, Sweden. The self-sample was analyzed by the Aptima HPV mRNA assay (Hologic). Women testing positive for HPV were invited for follow-up. The response was 18.5% (3,646/19,757). The prevalence of HPV mRNA was 11.3% (412/3,636). Among HPV-positive women, 85.7% (353/412) attended follow-up, and of these, 44.8% (158/353) had HPV in the cervical sample. The HPV mRNA test of self-samples showed a positive predictive value of 9.3% ([33/353], 95% CI = 6.5-12.9) for detection of cytologically severe dysplasia. Histologically severe dysplasia or cancer was detected in 0.88% ([32/3,636], 95% CI = 0.6-1.2) among responders, including two cervical- and one vaginal cancer. In conclusion, almost one fifth of the long-term non-attendees participated in self-collected vaginal hr-HPV sampling. The prevalence of histologically confirmed high grade squamous intraepithelial lesion or cervical cancer was not increased significantly compared to regularly screened women in Sweden. The relatively high HPV prevalence among the self-samples indicates the importance of diagnostic follow-up with cervical HPV testing and reflex-cytology of HPV-positive cases.</p>","PeriodicalId":15120,"journal":{"name":"Journal of Cancer Prevention","volume":"26 1","pages":"25-31"},"PeriodicalIF":2.5,"publicationDate":"2021-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8020173/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25581791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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