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Oncology

  • 1,331 Articles
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DEAD-box helicase DP103 defines metastatic potential of human breast cancers
Eun Myoung Shin, … , Alan Prem Kumar, Vinay Tergaonkar
Eun Myoung Shin, … , Alan Prem Kumar, Vinay Tergaonkar
Published August 1, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI73451.
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DEAD-box helicase DP103 defines metastatic potential of human breast cancers

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Abstract

Despite advancement in breast cancer treatment, 30% of patients with early breast cancers experience relapse with distant metastasis. It is a challenge to identify patients at risk for relapse; therefore, the identification of markers and therapeutic targets for metastatic breast cancers is imperative. Here, we identified DP103 as a biomarker and metastasis-driving oncogene in human breast cancers and determined that DP103 elevates matrix metallopeptidase 9 (MMP9) levels, which are associated with metastasis and invasion through activation of NF-κB. In turn, NF-κB signaling positively activated DP103 expression. Furthermore, DP103 enhanced TGF-β–activated kinase-1 (TAK1) phosphorylation of NF-κB–activating IκB kinase 2 (IKK2), leading to increased NF-κB activity. Reduction of DP103 expression in invasive breast cancer cells reduced phosphorylation of IKK2, abrogated NF-κB–mediated MMP9 expression, and impeded metastasis in a murine xenograft model. In breast cancer patient tissues, elevated levels of DP103 correlated with enhanced MMP9, reduced overall survival, and reduced survival after relapse. Together, these data indicate that a positive DP103/NF-κB feedback loop promotes constitutive NF-κB activation in invasive breast cancers and activation of this pathway is linked to cancer progression and the acquisition of chemotherapy resistance. Furthermore, our results suggest that DP103 has potential as a therapeutic target for breast cancer treatment.

Authors

Eun Myoung Shin, Hui Sin Hay, Moon Hee Lee, Jen Nee Goh, Tuan Zea Tan, Yin Ping Sen, See Wee Lim, Einas M. Yousef, Hooi Tin Ong, Aye Aye Thike, Xiangjun Kong, Zhengsheng Wu, Earnest Mendoz, Wei Sun, Manuel Salto-Tellez, Chwee Teck Lim, Peter E. Lobie, Yoon Pin Lim, Celestial T. Yap, Qi Zeng, Gautam Sethi, Martin B. Lee, Patrick Tan, Boon Cher Goh, Lance D. Miller, Jean Paul Thiery, Tao Zhu, Louis Gaboury, Puay Hoon Tan, Kam Man Hui, George Wai-Cheong Yip, Shigeki Miyamoto, Alan Prem Kumar, Vinay Tergaonkar

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Targeted p16Ink4a epimutation causes tumorigenesis and reduces survival in mice
Da-Hai Yu, … , Manasi Gadkari, Lanlan Shen
Da-Hai Yu, … , Manasi Gadkari, Lanlan Shen
Published July 25, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI76507.
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Targeted p16Ink4a epimutation causes tumorigenesis and reduces survival in mice

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Abstract

Cancer has long been viewed as a genetic disease; however, epigenetic silencing as the result of aberrant promoter DNA methylation is frequently associated with cancer development, suggesting an epigenetic component to the disease. Nonetheless, it has remained unclear whether an epimutation (an aberrant change in epigenetic regulation) can induce tumorigenesis. Here, we exploited a functionally validated cis-acting regulatory element and devised a strategy to induce developmentally regulated genomic targeting of DNA methylation. We used this system to target DNA methylation within the p16Ink4a promoter in mice in vivo. Engineered p16Ink4a promoter hypermethylation led to transcriptional suppression in somatic tissues during aging and increased the incidence of spontaneous cancers in these mice. Further, mice carrying a germline p16Ink4a mutation in one allele and a somatic epimutation in the other had accelerated tumor onset and substantially shortened tumor-free survival. Taken together, these results provide direct functional evidence that p16Ink4a epimutation drives tumor formation and malignant progression and validate a targeted methylation approach to epigenetic engineering.

Authors

Da-Hai Yu, Robert A. Waterland, Pumin Zhang, Deborah Schady, Miao-Hsueh Chen, Yongtao Guan, Manasi Gadkari, Lanlan Shen

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EGFR phosphorylation of DCBLD2 recruits TRAF6 and stimulates AKT-promoted tumorigenesis
Haizhong Feng, … , Hai Yan, Shi-Yuan Cheng
Haizhong Feng, … , Hai Yan, Shi-Yuan Cheng
Published July 25, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI73093.
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EGFR phosphorylation of DCBLD2 recruits TRAF6 and stimulates AKT-promoted tumorigenesis

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Abstract

Aberrant activation of EGFR in human cancers promotes tumorigenesis through stimulation of AKT signaling. Here, we determined that the discoidina neuropilin-like membrane protein DCBLD2 is upregulated in clinical specimens of glioblastomas and head and neck cancers (HNCs) and is required for EGFR-stimulated tumorigenesis. In multiple cancer cell lines, EGFR activated phosphorylation of tyrosine 750 (Y750) of DCBLD2, which is located within a recently identified binding motif for TNF receptor-associated factor 6 (TRAF6). Consequently, phosphorylation of DCBLD2 Y750 recruited TRAF6, leading to increased TRAF6 E3 ubiquitin ligase activity and subsequent activation of AKT, thereby enhancing EGFR-driven tumorigenesis. Moreover, evaluation of patient samples of gliomas and HNCs revealed an association among EGFR activation, DCBLD2 phosphorylation, and poor prognoses. Together, our findings uncover a pathway in which DCBLD2 functions as a signal relay for oncogenic EGFR signaling to promote tumorigenesis and suggest DCBLD2 and TRAF6 as potential therapeutic targets for human cancers that are associated with EGFR activation.

Authors

Haizhong Feng, Giselle Y. Lopez, Chung Kwon Kim, Angel Alvarez, Christopher G. Duncan, Ryo Nishikawa, Motoo Nagane, An-Jey A. Su, Philip E. Auron, Matthew L. Hedberg, Lin Wang, Jeffery J. Raizer, John A. Kessler, Andrew T. Parsa, Wei-Qiang Gao, Sung-Hak Kim, Mutsuko Minata, Ichiro Nakano, Jennifer R. Grandis, Roger E. McLendon, Darell D. Bigner, Hui-Kuan Lin, Frank B. Furnari, Webster K. Cavenee, Bo Hu, Hai Yan, Shi-Yuan Cheng

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RAS interaction with PI3K p110α is required for tumor-induced angiogenesis
Miguel Manuel Murillo, … , Gordon Stamp, Julian Downward
Miguel Manuel Murillo, … , Gordon Stamp, Julian Downward
Published July 8, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI74134.
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RAS interaction with PI3K p110α is required for tumor-induced angiogenesis

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Abstract

Direct interaction of RAS with the PI3K p110α subunit mediates RAS-driven tumor development: however, it is not clear how p110α/RAS-dependant signaling mediates interactions between tumors and host tissues. Here, using a murine tumor cell transfer model, we demonstrated that disruption of the interaction between RAS and p110α within host tissue reduced tumor growth and tumor-induced angiogenesis, leading to improved survival of tumor-bearing mice, even when this interaction was intact in the transferred tumor. Furthermore, functional interaction of RAS with p110α in host tissue was required for efficient establishment and growth of metastatic tumors. Inhibition of RAS and p110α interaction prevented proper VEGF-A and FGF-2 signaling, which are required for efficient angiogenesis. Additionally, disruption of the RAS and p110α interaction altered the nature of tumor-associated macrophages, inducing expression of markers typical for macrophage populations with reduced tumor-promoting capacity. Together, these results indicate that a functional RAS interaction with PI3K p110α in host tissue is required for the establishment of a growth-permissive environment for the tumor, particularly for tumor-induced angiogenesis. Targeting the interaction of RAS with PI3K has the potential to impair tumor formation by altering the tumor-host relationship, in addition to previously described tumor cell–autonomous effects.

Authors

Miguel Manuel Murillo, Santiago Zelenay, Emma Nye, Esther Castellano, Francois Lassailly, Gordon Stamp, Julian Downward

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The deubiquitinase USP28 controls intestinal homeostasis and promotes colorectal cancer
Markus E. Diefenbacher, … , Martin Eilers, Axel Behrens
Markus E. Diefenbacher, … , Martin Eilers, Axel Behrens
Published June 24, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI73733.
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The deubiquitinase USP28 controls intestinal homeostasis and promotes colorectal cancer

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Abstract

Colorectal cancer is the third most common cancer worldwide. Although the transcription factor c-MYC is misregulated in the majority of colorectal tumors, it is difficult to target directly. The deubiquitinase USP28 stabilizes oncogenic factors, including c-MYC; however, the contribution of USP28 in tumorigenesis, particularly in the intestine, is unknown. Here, using murine genetic models, we determined that USP28 antagonizes the ubiquitin-dependent degradation of c-MYC, a known USP28 substrate, as well as 2 additional oncogenic factors, c-JUN and NOTCH1, in the intestine. Mice lacking Usp28 had no apparent adverse phenotypes, but exhibited reduced intestinal proliferation and impaired differentiation of secretory lineage cells. In a murine model of colorectal cancer, Usp28 deletion resulted in fewer intestinal tumors, and importantly, in established tumors, Usp28 deletion reduced tumor size and dramatically increased lifespan. Moreover, we identified Usp28 as a c-MYC target gene highly expressed in murine and human intestinal cancers, which indicates that USP28 and c-MYC form a positive feedback loop that maintains high c-MYC protein levels in tumors. Usp28 deficiency promoted tumor cell differentiation accompanied by decreased proliferation, which suggests that USP28 acts similarly in intestinal homeostasis and colorectal cancer models. Hence, inhibition of the enzymatic activity of USP28 may be a potential target for cancer therapy.

Authors

Markus E. Diefenbacher, Nikita Popov, Sophia M. Blake, Christina Schülein-Völk, Emma Nye, Bradley Spencer-Dene, Laura A. Jaenicke, Martin Eilers, Axel Behrens

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A phosphotyrosine switch determines the antitumor activity of ERβ
Bin Yuan, … , Qinong Ye, Rong Li
Bin Yuan, … , Qinong Ye, Rong Li
Published June 24, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI74085.
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A phosphotyrosine switch determines the antitumor activity of ERβ

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Abstract

Estrogen receptors ERα and ERβ share considerable sequence homology yet exert opposite effects on breast cancer cell proliferation. While the proliferative role of ERα in breast tumors is well characterized, it is not clear whether the antitumor activity of ERβ can be mobilized in breast cancer cells. Here, we have shown that phosphorylation of a tyrosine residue (Y36) present in ERβ, but not in ERα, dictates ERβ-specific activation of transcription and is required for ERβ-dependent inhibition of cancer cell growth in culture and in murine xenografts. Additionally, the c-ABL tyrosine kinase and EYA2 phosphatase directly and diametrically controlled the phosphorylation status of Y36 and subsequent ERβ function. A nonphosphorylatable, transcriptionally active ERβ mutant retained antitumor activity but circumvented control by upstream regulators. Phosphorylation of Y36 was required for ERβ-mediated coactivator recruitment to ERβ target promoters. In human breast cancer samples, elevated phosphorylation of Y36 in ERβ correlated with high levels of c-ABL but low EYA2 levels. Furthermore, compared with total ERβ, the presence of phosphorylated Y36–specific ERβ was strongly associated with both disease-free and overall survival in patients with stage II and III disease. Together, these data identify a signaling circuitry that regulates ERβ-specific antitumor activity and has potential as both a prognostic tool and a molecular target for cancer therapy.

Authors

Bin Yuan, Long Cheng, Huai-Chin Chiang, Xiaojie Xu, Yongjian Han, Hang Su, Lingxue Wang, Bo Zhang, Jing Lin, Xiaobing Li, Xiangyang Xie, Tao Wang, Rajeshwar R. Tekmal, Tyler J. Curiel, Zhi-Min Yuan, Richard Elledge, Yanfen Hu, Qinong Ye, Rong Li

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Stromal heparan sulfate differentiates neuroblasts to suppress neuroblastoma growth
Erik H. Knelson, … , Stephen G. Marcus, Gerard C. Blobe
Erik H. Knelson, … , Stephen G. Marcus, Gerard C. Blobe
Published June 17, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI74270.
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Stromal heparan sulfate differentiates neuroblasts to suppress neuroblastoma growth

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Abstract

Neuroblastoma prognosis is dependent on both the differentiation state and stromal content of the tumor. Neuroblastoma tumor stroma is thought to suppress neuroblast growth via release of soluble differentiating factors. Here, we identified critical growth-limiting components of the differentiating stroma secretome and designed a potential therapeutic strategy based on their central mechanism of action. We demonstrated that expression of heparan sulfate proteoglycans (HSPGs), including TβRIII, GPC1, GPC3, SDC3, and SDC4, is low in neuroblasts and high in the Schwannian stroma. Evaluation of neuroblastoma patient microarray data revealed an association between TGFBR3, GPC1, and SDC3 expression and improved prognosis. Treatment of neuroblastoma cell lines with soluble HSPGs promoted neuroblast differentiation via FGFR1 and ERK phosphorylation, leading to upregulation of the transcription factor inhibitor of DNA binding 1 (ID1). HSPGs also enhanced FGF2-dependent differentiation, and the anticoagulant heparin had a similar effect, leading to decreased neuroblast proliferation. Dissection of individual sulfation sites identified 2-O, 3-O-desulfated heparin (ODSH) as a differentiating agent, and treatment of orthotopic xenograft models with ODSH suppressed tumor growth and metastasis without anticoagulation. These studies support heparan sulfate signaling intermediates as prognostic and therapeutic neuroblastoma biomarkers and demonstrate that tumor stroma biology can inform the design of targeted molecular therapeutics.

Authors

Erik H. Knelson, Angela L. Gaviglio, Jasmine C. Nee, Mark D. Starr, Andrew B. Nixon, Stephen G. Marcus, Gerard C. Blobe

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MicroRNA-205 signaling regulates mammary stem cell fate and tumorigenesis
Chi-Hong Chao, … , Jer-Yen Yang, Chun-Ju Chang
Chi-Hong Chao, … , Jer-Yen Yang, Chun-Ju Chang
Published June 9, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI73351.
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MicroRNA-205 signaling regulates mammary stem cell fate and tumorigenesis

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Abstract

Dysregulation of epigenetic controls is associated with tumorigenesis in response to microenvironmental stimuli; however, the regulatory pathways involved in epigenetic dysfunction are largely unclear. We have determined that a critical epigenetic regulator, microRNA-205 (miR-205), is repressed by the ligand jagged1, which is secreted from the tumor stroma to promote a cancer-associated stem cell phenotype. Knockdown of miR-205 in mammary epithelial cells promoted epithelial-mesenchymal transition (EMT), disrupted epithelial cell polarity, and enhanced symmetric division to expand the stem cell population. Furthermore, miR-205–deficient mice spontaneously developed mammary lesions, while activation of miR-205 markedly diminished breast cancer stemness. These data provide evidence that links tumor microenvironment and microRNA-dependent regulation to disruption of epithelial polarity and aberrant mammary stem cell division, which in turn leads to an expansion of stem cell population and tumorigenesis. This study elucidates an important role for miR-205 in the regulation of mammary stem cell fate, suggesting a potential therapeutic target for limiting breast cancer genesis.

Authors

Chi-Hong Chao, Chao-Ching Chang, Meng-Ju Wu, How-Wen Ko, Da Wang, Mien-Chie Hung, Jer-Yen Yang, Chun-Ju Chang

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CRIPTO1 expression in EGFR-mutant NSCLC elicits intrinsic EGFR-inhibitor resistance
Kang-Seo Park, … , Yisong Wang, Giuseppe Giaccone
Kang-Seo Park, … , Yisong Wang, Giuseppe Giaccone
Published June 9, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI73048.
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CRIPTO1 expression in EGFR-mutant NSCLC elicits intrinsic EGFR-inhibitor resistance

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Abstract

The majority of non–small cell lung cancer (NSCLC) patients harbor EGFR-activating mutations that can be therapeutically targeted by EGFR tyrosine kinase inhibitors (EGFR-TKI), such as erlotinib and gefitinib. Unfortunately, a subset of patients with EGFR mutations are refractory to EGFR-TKIs. Resistance to EGFR inhibitors reportedly involves SRC activation and induction of epithelial-to-mesenchymal transition (EMT). Here, we have demonstrated that overexpression of CRIPTO1, an EGF-CFC protein family member, renders EGFR-TKI–sensitive and EGFR-mutated NSCLC cells resistant to erlotinib in culture and in murine xenograft models. Furthermore, tumors from NSCLC patients with EGFR-activating mutations that were intrinsically resistant to EGFR-TKIs expressed higher levels of CRIPTO1 compared with tumors from patients that were sensitive to EGFR-TKIs. Primary NSCLC cells derived from a patient with EGFR-mutated NSCLC that was intrinsically erlotinib resistant were CRIPTO1 positive, but gained erlotinib sensitivity upon loss of CRIPTO1 expression during culture. CRIPTO1 activated SRC and ZEB1 to promote EMT via microRNA-205 (miR-205) downregulation. While miR-205 depletion induced erlotinib resistance, miR-205 overexpression inhibited CRIPTO1-dependent ZEB1 and SRC activation, restoring erlotinib sensitivity. CRIPTO1-induced erlotinib resistance was directly mediated through SRC but not ZEB1; therefore, cotargeting EGFR and SRC synergistically attenuated growth of erlotinib-resistant, CRIPTO1-positive, EGFR-mutated NSCLC cells in vitro and in vivo, suggesting that this combination may overcome intrinsic EGFR-inhibitor resistance in patients with CRIPTO1-positive, EGFR-mutated NSCLC.

Authors

Kang-Seo Park, Mark Raffeld, Yong Wha Moon, Liqiang Xi, Caterina Bianco, Trung Pham, Liam C. Lee, Tetsuya Mitsudomi, Yasushi Yatabe, Isamu Okamoto, Deepa Subramaniam, Tony Mok, Rafael Rosell, Ji Luo, David S. Salomon, Yisong Wang, Giuseppe Giaccone

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Ewing’s sarcoma precursors are highly enriched in embryonic osteochondrogenic progenitors
Miwa Tanaka, … , Jun Kanno, Takuro Nakamura
Miwa Tanaka, … , Jun Kanno, Takuro Nakamura
Published June 9, 2014
Citation Information: J Clin Invest. 2014. https://doi.org/10.1172/JCI72399.
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Ewing’s sarcoma precursors are highly enriched in embryonic osteochondrogenic progenitors

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Abstract

Ewing’s sarcoma is a highly malignant bone tumor found in children and adolescents, and the origin of this malignancy is not well understood. Here, we introduced a Ewing’s sarcoma–associated genetic fusion of the genes encoding the RNA-binding protein EWS and the transcription factor ETS (EWS-ETS) into a fraction of cells enriched for osteochondrogenic progenitors derived from the embryonic superficial zone (eSZ) of long bones collected from late gestational murine embryos. EWS-ETS fusions efficiently induced Ewing’s sarcoma–like small round cell sarcoma formation by these cells. Analysis of the eSZ revealed a fraction of a precursor cells that express growth/differentiation factor 5 (Gdf5), the transcription factor Erg, and parathyroid hormone-like hormone (Pthlh), and selection of the Pthlh-positive fraction alone further enhanced EWS-ETS–dependent tumor induction. Genes downstream of the EWS-ETS fusion protein were quite transcriptionally active in eSZ cells, especially in regions in which the chromatin structure of the ETS-responsive locus was open. Inhibition of β-catenin, poly (ADP-ribose) polymerase 1 (PARP1), or enhancer of zeste homolog 2 (EZH2) suppressed cell growth in a murine model of Ewing’s sarcoma, suggesting the utility of the current system as a preclinical model. These results indicate that eSZ cells are highly enriched in precursors to Ewing’s sarcoma and provide clues to the histogenesis of Ewing’s sarcoma in bone.

Authors

Miwa Tanaka, Yukari Yamazaki, Yohei Kanno, Katsuhide Igarashi, Ken-ichi Aisaki, Jun Kanno, Takuro Nakamura

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E2F8 keeps liver cancer at bay
Alain de Bruin, Gustavo Leone, and colleagues find that the E2F8-mediated transcriptional repression in the developing liver suppresses hepatocellular carcinoma later in life …
Published July 25, 2016
Scientific Show StopperOncology

AIDing and abetting UV-independent skin cancer
Taichiro Nonaka and colleagues find that AID plays a role in the development of inflammation-driven, non-UV skin cancer
Published March 14, 2016
Scientific Show StopperOncology

CD37 keeps B cell lymphoma at bay
Charlotte de Winde, Sharon Veenbergen, and colleagues demonstrate that loss of CD37 expression relieves SOCS3-mediated suppression of IL-6 signaling and supports the development of B cell lymphoma…
Published January 19, 2016
Scientific Show StopperOncology

Maintaining endometrial epithelial barrier function
Jessica Bowser and colleagues identify a mechanism by which loss of CD73 promotes endometrial cancer progression…
Published December 7, 2015
Scientific Show StopperOncology

Sleuthing out the cellular source of hepatocellular carcinoma
Xueru Mu, Regina Español-Suñer, and colleagues show that tumors in murine hepatocellular carcinoma models are derived from hepatocytes and not from other liver resident cells …
Published September 8, 2015
Scientific Show StopperOncology

Live animal imaging in the far red
Ming Zhang and colleagues developed a far-red-absorbing reporter/probe system that can be used to image live animals and overcomes imaging limitations associated with conventional systems that use lower wavelengths of light…
Published September 8, 2015
Scientific Show StopperTechnical AdvanceOncology

Cancer cells fight off stress with ATF4
Souvik Dey, Carly Sayers, and colleagues reveal that activation of heme oxygenase 1 by ATF4 protects cancer cells from ECM detachment-induced death and promotes metastasis…
Published May 26, 2015
Scientific Show StopperOncology

Smothering Von Hippel-Lindau syndrome-associated phenotypes
Ana Metelo and colleagues demonstrate that specific inhibition of HIF2a ameliorates VHL-associated phenotypes and improves survival in a zebrafish model of disease…
Published April 13, 2015
Scientific Show StopperOncology

Blazing the trail for metastasis
Jill Westcott, Amanda Prechtl, and colleagues identify an epigenetically distinct population of breast cancer cells that promotes collective invasion…
Published April 6, 2015
Scientific Show StopperOncology

Dynamic focal adhesions
Wies van Roosmalen, Sylvia E. Le Dévédec, and colleagues screen for genes that alter cancer cell migration and demonstrate that SRPK1 promotes metastasis...
Published March 16, 2015
Scientific Show StopperOncology
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