Cancer Stem Cell News Volume 4.11 | Mar 25 2015

Cancer Stem Cell News 4.11 March 25, 2015

Cancer Stem Cell News

     In this issue: Publications | Reviews | Industry News | Policy News | Events | Jobs
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Paracrine WNT5A Signaling Inhibits Expansion of Tumor-Initiating Cells
As a TGFβ substrate, luminal cell-produced WNT5A induced a feed-forward loop to activate SMAD2 in a RYK and TGFβR1-dependent manner to limit the expansion of basal tumor-initiating cells in a paracrine fashion, a potential explanation for the suppressive effect of WNT5A in mammary tumorigenesis [Cancer Res]
Abstract | Full Article
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PUBLICATIONS (Ranked by impact factor of the journal)
The Chemokine Receptor CCR7 Promotes Mammary Tumorigenesis through Amplification of Stem-Like Cells
CCR7 was found to exert its function by regulating mammary cancer stem-like cells in both murine and human tumors. In vivo experiments showed that loss of CCR7 activity either through deletion or pharmacological antagonism significantly decreased functional pools of stem-like cells in mouse primary mammary tumors, providing a mechanistic explanation for the tumor-promoting role of this chemokine receptor. [Oncogene] Abstract

Dynamic Regulation of the Cancer Stem Cell Compartment by Cripto-1 in Colorectal Cancer
Scientists found that the embryonic protein cripto-1 (CR1) was expressed by normal stem cells at the bottom of colonic crypts and by cancer stem cells in colorectal tumor tissues. CR1-positive populations isolated from patient-derived tumor spheroids exhibited increased clonogenic capacity and expression of stem-cell-related genes. [Cell Death Differ] Full Article

Intra-Tumor Signaling Entropy Determines Clinical Outcome in Breast and Lung Cancer
Researchers proposed signaling entropy, a measure of signaling pathway promiscuity derived from a sample’s genome-wide gene expression profile, as an estimate of the stemness of a tumor sample. They found that its prognostic power is driven by genes involved in cancer stem cells and treatment resistance. [PLoS Comput Biol] Full Article

Preclinical Activity of Combined HDAC and KDM1A Inhibition in Glioblastoma
The combination of vorinostat and tranylcypromine reduced glioma stem cell viability and displayed efficacy in the U87 xenograft model. Additionally, the combination led to changes in apoptosis-related genes, particularly TP53 and TP73 in vitro and in vivo. [Neuro Oncol] Abstract

Targeting Exosomes from Preadipocytes Inhibits Preadipocyte to Cancer Stem Cell Signaling in Early-Stage Breast Cancer
Researchers examined how preadipocyte-derived exosomes can regulate early-stage breast cancer via regulating stem cell renewal, cell migration, and tumor formation. They identified a critical miR-140/SOX2/SOX9 axis that regulates differentiation, stemness, and migration in the tumor microenvironment. [Breast Cancer Res Treat] Abstract

Dedifferentiation of Patient-Derived Glioblastoma Multiforme Cell Lines Results in a Cancer Stem Cell-Like State with Mitogen-Independent Growth
Scientists successfully dedifferentiated two patient-derived glioblastoma multiforme cell lines into cancer stem cell-like cells through expression of Oct4, Sox2 and Nanog transcription factors. Transformed cells exhibited significant suppression of epidermal growth factor receptor and its downstream pathways [J Cell Mol Med] Full Article

miR-34a Suppresses the Breast Cancer Stem Cell-Like Characteristics by Downregulating Notch1 Pathway
Investigators verified that microRNA (miR)-34a directly and functionally targeted Notch1 in MCF-7 cells. They report that miR-34a negatively regulated cell proliferation, migration, invasion and breast cancer stem cell propagation by downregulating Notch1. [Cancer Sci] Abstract

Safety and Efficacy Study of Nasopharyngeal Cancer Stem Cell Vaccine
Nasopharyngeal cancer stem cells (CSCs) were separated and cultured to produce a vaccine; its safety and efficacy were prospectively evaluated in low-, medium-, and high-dose groups. Researchers found that the CSC-specific and -nonspecific response in the medium- and high-dose groups were both significantly enhanced. [Immunol Lett] Abstract

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Targeting the Canonical Wnt/β-Catenin Pathway in Hematological Malignancies
Aberrant activation of the Wnt/β-catenin pathway contributes to carcinogenesis and malignant behaviors, and Wnt signaling is essential for the maintenance of cancer stem cells. The authors discuss the significance of the canonical Wnt/β-catenin pathway in hematological carcinogenesis and screening methods for specific inhibitors. [Cancer Sci] Abstract

Visit our reviews page to see a complete list of reviews in the cancer stem cell research field.

ACGT Surpasses $25 Million Funding Milestone with Two New Grants
Alliance for Cancer Gene Therapy (ACGT) has achieved a major milestone, surpassing $25 million donated to innovative and breakthrough cancer research. [Alliance for Cancer Gene Therapy (Vocus PRW Holdings, LLC.)] Press Release

City of Hope Launches Stem Cell Therapy Clinic to Fight Incurable Disease in New Ways
The City of Hope officially opened the Alpha Clinic for Cell Therapy and Innovation for patients battling cancer and other life-threatening diseases. The Alpha Clinic is funded by an $8 million, five-year grant from the California Institute for Regenerative Medicine that will be supplemented by matching funds from City of Hope. [City of Hope] Press Release

“How Does Breast Cancer Develop?” Pilot Grants Awarded to Multidisciplinary Teams Using the Intraductal Approach to Advance Breast Cancer Prevention
Dr. Susan Love Research Foundation awarded four innovative pilot grants to research projects that will explore using next generation technology to investigate the human breast and how it develops cancer. [Dr. Susan Love Research Foundation] Press Release

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NEW EMBO Workshop – Cellular and Molecular Mechanism of Tumor-Microenvironment Crosstalk
July 9-12, 2015
Tomsk, Russia

NEW Gordon Research Conference – Hormone-Dependent Cancers
August 16-21, 2015
Newry, United States

Visit our events page to see a complete list of events in the cancer stem cell community.

NEW Postdoctoral Position – Triple Negative Breast Cancer (King’s College London)

NEW Postdoctoral Fellow – Breast Cancer & Stem Cell Biology (University of Cincinnati)

NEW Postdoctoral Position – Genomics of Stem Cells and Cancer (Albert Einstein College of Medicine)

PhD Position – Peptide-Drug Conjugates for Targeted Delivery in Tumor Therapy (EXIRIS Oncology Research)

PhD Positions – Immunological Aspects of Cancer and Allergy (University of Salzburg)

Postdoctoral Positions – Stem Cell and Cancer (Brigham & Women’s Hospital)

Postdoctoral Position – Stem Cell Biology & Cancer Biology (Oregon Health and Science University)

Research Technician II – Pediatric Cancer and Stem Cells (Massachusetts General Hospital)

Postdoctoral Fellow – Stem Cells and Breast Cancer (Albert Einstein College of Medicine)

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