Jessica Felton, Kunrong Cheng, Aaron C Shang, Shien Hu, Shannon M Larabee, Cinthia B Drachenberg, Jean-Pierre Raufman
{"title":"Two sides to colon cancer: mice mimic human anatomical region disparity in colon cancer development and progression.","authors":"Jessica Felton, Kunrong Cheng, Aaron C Shang, Shien Hu, Shannon M Larabee, Cinthia B Drachenberg, Jean-Pierre Raufman","doi":"10.20517/2394-4722.2018.39","DOIUrl":"10.20517/2394-4722.2018.39","url":null,"abstract":"<p><strong>Aim: </strong>Strong evidence reveals important differences between cancers in the proximal <i>vs</i>. distal colon. Animal models of metastatic colon cancer are available but with varying degrees of reproducibility and several important limitations. We explored whether there were regional differences in the location of murine colon cancers and assessed the utility of murine models to explore the biological basis for such differences.</p><p><strong>Methods: </strong>We re-analyzed data from our previous studies to assess the regional distribution of murine colon cancer. In survival surgery experiments, we injected HT-29 human colon cancer cells into the wall of the cecum or distal colon of Nu(NCr)-Foxn1<sup>nu</sup> or NOD.Cg-Prkdc<sup>scid</sup>Il2rg<sup>Tim1Wji</sup>/SzJ mice and compared the development of primary tumors and metastases.</p><p><strong>Results: </strong>Within 7-17 weeks after intramural cecal injection of HT-29 cells, eight mice failed to develop solid primary tumors or metastases. In contrast, within four weeks after cell injection into the distal colon, 13 mice developed metastases - 12 mice developed subcutaneous metastases; of these, four developed liver metastases and one developed both liver and lung metastases. One mouse developed liver metastases only. Histological examination confirmed these lesions were adenocarcinomas.</p><p><strong>Conclusion: </strong>Our findings reveal the preferential growth of murine colon neoplasia and invasive human orthotopic xenografts in the distal mouse colon. The new approach of injecting cells into the distal colon wall results in a pattern of colon cancer development that closely mimics the progression of metastatic colon cancer in humans. This novel model of colon neoplasia has great potential for exploring anatomical differences in colon cancer and testing novel therapeutics.</p>","PeriodicalId":15167,"journal":{"name":"Journal of Cancer Metastasis and Treatment","volume":"4 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6860924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47223058","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}
Francesca Battaglin, Alberto Puccini, Madiha Naseem, Marta Schirripa, Martin D Berger, Ryuma Tokunaga, Michelle McSkane, Taline Khoukaz, Shivani Soni, Wu Zhang, Heinz-Josef Lenz
{"title":"Pharmacogenomics in colorectal cancer: current role in clinical practice and future perspectives.","authors":"Francesca Battaglin, Alberto Puccini, Madiha Naseem, Marta Schirripa, Martin D Berger, Ryuma Tokunaga, Michelle McSkane, Taline Khoukaz, Shivani Soni, Wu Zhang, Heinz-Josef Lenz","doi":"10.20517/2394-4722.2018.04","DOIUrl":"10.20517/2394-4722.2018.04","url":null,"abstract":"<p><p>The treatment scenario of colorectal cancer (CRC) has been evolving in recent years with the introduction of novel targeted agents and new therapeutic strategies for the metastatic disease. An extensive effort has been directed to the identification of predictive biomarkers to aid patients selection and guide therapeutic choices. Pharmacogenomics represents an irreplaceable tool to individualize patients treatment based on germline and tumor acquired somatic genetic variations able to predict drugs response and risk of toxicities. The growing knowledge of CRC molecular characteristics and complex genomic makeup has played a crucial role in identifying predictive pharmacogenomic biomarkers, while supporting the rationale for the development of new drugs and treatment combinations. Clinical validation of promising biomarkers, however, is often an issue. More recently, a deeper understanding of resistance mechanisms and tumor escape dynamics under treatment pressure and the availability of novel technologies are opening new perspectives in this field. This review aims to present an overview of current pharmacogenomic biomarkers and future perspectives of pharmacogenomics in CRC, in an evolving scenario moving from a single drug-gene interactions approach to a more comprehensive genome-wide approach, comprising genomics and epigenetics.</p>","PeriodicalId":15167,"journal":{"name":"Journal of Cancer Metastasis and Treatment","volume":"4 3","pages":""},"PeriodicalIF":1.9,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8442855/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39425912","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}
Giuseppe Galletti, Daniel Worroll, David M Nanus, Paraskevi Giannakakou
{"title":"Using circulating tumor cells to advance precision medicine in prostate cancer.","authors":"Giuseppe Galletti, Daniel Worroll, David M Nanus, Paraskevi Giannakakou","doi":"10.20517/2394-4722.2017.45","DOIUrl":"10.20517/2394-4722.2017.45","url":null,"abstract":"<p><p>The field of CTC enrichment has seen many emerging technologies in recent years, which have resulted in the identification and monitoring of clinically relevant, CTC-based biomarkers that can be analyzed routinely without invasive procedures. Several molecular platforms have been used to investigate the molecular profile of the disease, from high throughput gene expression analyses down to single cell biological dissection. The established presence of CTC heterogeneity nevertheless constitutes a challenge for cell isolation as the several subpopulations can potentially display different molecular characteristics; in this scenario, careful consideration must be given to the isolation approach, whereas methods that discriminate against certain subpopulations may result in the exclusion of CTCs that carry biological relevance. In the context of prostate cancer (PC), CTC molecular interrogation can enable longitudinal monitoring of key biological features during treatment with substantial clinical impact, as several biomarkers could predict tumor response to AR signaling inhibitors (abiraterone, enzalutamide) or standard chemotherapy (taxanes). Thus, CTCs represent a valuable opportunity to personalize medicine in current clinical practice.</p>","PeriodicalId":15167,"journal":{"name":"Journal of Cancer Metastasis and Treatment","volume":"3 ","pages":"190-205"},"PeriodicalIF":1.9,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5913755/pdf/nihms958394.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36054679","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}
{"title":"TGF-β Stimulation of EMT Programs Elicits Non-genomic ER-α Activity and Anti-estrogen Resistance in Breast Cancer Cells.","authors":"Maozhen Tian, William P Schiemann","doi":"10.20517/2394-4722.2017.38","DOIUrl":"https://doi.org/10.20517/2394-4722.2017.38","url":null,"abstract":"<p><strong>Aim: </strong>Estrogen receptor-α (ER-α) activation drives the progression of luminal breast cancers. Signaling by transforming growth factor-β (TGF-β) typically opposes the actions of ER-α; it also induces epithelial-mesenchymal transition (EMT) programs that promote breast cancer dissemination, stemness, and chemoresistance. The impact of EMT programs on nongenomic ER-α signaling remains unknown and was studied herein.</p><p><strong>Methods: </strong>MCF-7 and BT474 cells were stimulated with TGF-β to induce EMT programs, at which point ER-α expression, localization, and nongenomic interactions with receptor tyrosine kinases and MAP kinases (MAPKs) were determined. Cell sensitivity to anti-estrogens both before and after traversing the EMT program was also investigated.</p><p><strong>Results: </strong>TGF-β stimulated MCF-7 and BT474 cells to acquire EMT phenotypes, which enhanced cytoplasmic accumulation of ER-α without altering its expression. Post-EMT cells exhibited <i>(i)</i> elevated expression of EGFR and IGF1R, which together with Src formed cytoplasmic complexes with ER-α; <i>(ii)</i> enhanced coupling of EGF, IGF-1 and estrogen to the activation of MAPKs; and <i>(iii)</i> reduced sensitivity to tamoxifen, an event reversed by administration of small molecule inhibitors against the receptors for TGF-β, EGF, and IGF-1, as well as those against MAPKs.</p><p><strong>Conclusion: </strong>EMT stimulated by TGF-β promotes anti-estrogen resistance by activating EGFR-, IGF1R-, and MAPK-dependent nongenomic ER-α signaling.</p>","PeriodicalId":15167,"journal":{"name":"Journal of Cancer Metastasis and Treatment","volume":"3 ","pages":"150-160"},"PeriodicalIF":1.9,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5612668/pdf/nihms905795.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35394501","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}
{"title":"DNA damage-induced nuclear factor-kappa B activation and its roles in cancer progression.","authors":"Wei Wang, Arul M Mani, Zhao-Hui Wu","doi":"10.20517/2394-4722.2017.03","DOIUrl":"10.20517/2394-4722.2017.03","url":null,"abstract":"<p><p>DNA damage is a vital challenge to cell homeostasis. Cellular responses to DNA damage (DDR) play essential roles in maintaining genomic stability and survival, whose failure could lead to detrimental consequences such as cancer development and aging. Nuclear factor-kappa B (NF-κB) is a family of transcription factors that plays critical roles in cellular stress response. Along with p53, NF-κB modulates transactivation of a large number of genes which participate in various cellular processes involved in DDR. Here the authors summarize the recent progress in understanding DNA damage response and NF-κB signaling pathways. This study particularly focuses on DNA damage-induced NF-κB signaling cascade and its physiological and pathological significance in B cell development and cancer therapeutic resistance. The authors also discuss promising strategies for selectively targeting this genotoxic NF-κB signaling aiming to antagonize acquired resistance and resensitize refractory cancer cells to cytotoxic treatments.</p>","PeriodicalId":15167,"journal":{"name":"Journal of Cancer Metastasis and Treatment","volume":"3 ","pages":"45-59"},"PeriodicalIF":1.9,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ff/f3/nihms866037.PMC5472228.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35098913","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}
{"title":"Muscarinic receptor signaling and colon cancer progression.","authors":"Guofeng Xie, Jean-Pierre Raufman","doi":"10.20517/2394-4722.2016.05","DOIUrl":"10.20517/2394-4722.2016.05","url":null,"abstract":"<p><p>Due to the lack of effective treatments, advanced colorectal cancer (CRC) remains a leading cause of cancer death in the United States. Emerging evidence supports the observation that muscarinic receptor (MR) signaling plays a critical role in growth and progression of CRC. MR activation by acetylcholine and bile acids results in transactivation of epidermal growth factor receptors (EGFR) and post-EGFR signal transduction that enhances cell proliferation, migration, and invasion. Here, the authors review recent progress in understanding the molecular mechanisms underlying MR-mediated CRC progression and its therapeutic implications.</p>","PeriodicalId":15167,"journal":{"name":"Journal of Cancer Metastasis and Treatment","volume":"2 ","pages":"195-200"},"PeriodicalIF":1.9,"publicationDate":"2016-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/94/da/nihms-1595790.PMC7362988.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38159996","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}