Caveolin-1 Inhibits Breast Cancer Stem Cells via c-Myc-Mediated Metabolic Reprogramming

Scientists demonstrated that the downregulation of caveolin-1 usually occurred in breast cancer stem cells and was associated with a metabolic switch from mitochondrial respiration to aerobic glycolysis.
[Cell Death & Disease]
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A Positive Feedback Loop between c-Myc Up-Regulation, Glycolytic Shift and Histone Acetylation Enhances Cancer Stem Cell-Like Property and Tumorigenicity of Cr(VI)-Transformed Cells

Researchers investigated the potential role and mechanism of metabolism dysregulation in chronic hexavalent chromium [Cr(VI)] carcinogenesis. It was found that Cr(VI)-transformed cells displayed glycolytic shift, which depends on the up-regulation of c-Myc.
[Toxicological Sciences]
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Ibuprofen Mediates Histone Modification to Diminish Cancer Cell Stemness Properties via a COX2-Dependent Manner

The authors report that ibuprofen diminished cancer cell stemness properties that include reducing the ALDH+ subpopulation, side population and sphere formation in three cancer types.
[British Journal of Cancer]
Shen, W., Zhang, X., Du, R., Gao, W., Wang, J., Bao, Y., Yang, W., Luo, N., & Li, J. (2020). Ibuprofen mediates histone modification to diminish cancer cell stemness properties via a COX2-dependent manner. British Journal of Cancer, 1–12. https://doi.org/10.1038/s41416-020-0906-7 Cite
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ARS2/MAGL Signaling in Glioblastoma Stem Cells Promotes Self-Renewal and M2-Like Polarization of Tumor-Associated Macrophages

Investigators demonstrated that arsenite-resistance protein 2 (ARS2), a zinc finger protein that is essential for early mammalian development, played critical roles in glioblastoma stem cell maintenance and M2-like tumor-associated macrophage polarization.
[Nature Communications]
Yin, J., Kim, S. S., Choi, E., Oh, Y. T., Lin, W., Kim, T.-H., Sa, J. K., Hong, J. H., Park, S. H., Kwon, H. J., Jin, X., You, Y., Kim, J. H., Kim, H., Son, J., Lee, J., Nam, D.-H., Choi, K. S., Shi, B., … Park, J. B. (2020). ARS2/MAGL signaling in glioblastoma stem cells promotes self-renewal and M2-like polarization of tumor-associated macrophages. Nature Communications, 11(1), 2978. https://doi.org/10.1038/s41467-020-16789-2 Cite
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Unbiased Proteomic Profiling Uncovers a Targetable GNAS/PKA/PP2A Axis in Small Cell Lung Cancer Stem Cells

Scientists identified protein kinase A (PKA) as an active kinase in small cell lung cancer (SCLC). Inhibition of PKA activity genetically, or pharmacologically by activation of the PP2A phosphatase, suppressed SCLC expansion in culture and in vivo.
[Cancer Cell]
Coles, G. L., Cristea, S., Webber, J. T., Levin, R. S., Moss, S. M., He, A., Sangodkar, J., Hwang, Y. C., Arand, J., Drainas, A. P., Mooney, N. A., Demeter, J., Spradlin, J. N., Mauch, B., Le, V., Shue, Y. T., Ko, J. H., Lee, M. C., Kong, C., … Sage, J. (2020). Unbiased Proteomic Profiling Uncovers a Targetable GNAS/PKA/PP2A Axis in Small Cell Lung Cancer Stem Cells. Cancer Cell, 0(0). https://doi.org/10.1016/j.ccell.2020.05.003 Cite
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Targeting FTO Suppresses Cancer Stem Cell Maintenance and Immune Evasion

Researchers showed that genetic depletion and pharmacological inhibition of fat mass and obesity-associated protein dramatically attenuated leukemia stem/initiating cell self-renewal and reprogrammed immune response by suppressing expression of immune checkpoint genes, especially LILRB4.
[Cancer Cell]
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CSL Behring and Seattle Children’s Research Institute to Advance Gene Therapy Treatments for Primary Immunodeficiency Diseases

Seattle Children’s Research Institute and CSL Behring announced a strategic alliance to develop stem cell gene therapies for primary immunodeficiency diseases.
[Seattle Children’s Research Institute]
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SH3RF3 Promotes Breast Cancer Stem-Like Properties via JNK Activation and PTX3 Upregulation

Scientists identified a scaffold protein SH3RF3 that was upregulated in CSCs of breast cancer clinical tumors and cancer cell lines, and enhanced the CSC properties of breast cancer cells.
[Nature Communications]
Ostrander, E. L., Kramer, A. C., Mallaney, C., Celik, H., Koh, W. K., Fairchild, J., Haussler, E., Zhang, C. R. C., & Challen, G. A. (2020). Divergent Effects of Dnmt3a and Tet2 Mutations on Hematopoietic Progenitor Cell Fitness. Stem Cell Reports, 0(0). https://doi.org/10.1016/j.stemcr.2020.02.011 Cite
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Critical Role of SOX2–IGF2 Signaling in Aggressiveness of Bladder Cancer

Researchers found SOX2 expression signifies poor recurrence-free survival and correlates with advanced pathological grade in bladder cancer. SOX2 silencing attenuated bladder cancer cell growth, while its expression promoted cancer cell survival and proliferation.
[Scientific Reports]
Ostrander, E. L., Kramer, A. C., Mallaney, C., Celik, H., Koh, W. K., Fairchild, J., Haussler, E., Zhang, C. R. C., & Challen, G. A. (2020). Divergent Effects of Dnmt3a and Tet2 Mutations on Hematopoietic Progenitor Cell Fitness. Stem Cell Reports, 0(0). https://doi.org/10.1016/j.stemcr.2020.02.011 Cite
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Disrupting Mitochondrial Copper Distribution Inhibits Leukemic Stem Cell Self-Renewal

The authors found increased mRNA expression of mitochondrial intermembrane assembly pathway substrates in acute myeloid leukemia stem cells.
[Cell Stem Cell]
Ostrander, E. L., Kramer, A. C., Mallaney, C., Celik, H., Koh, W. K., Fairchild, J., Haussler, E., Zhang, C. R. C., & Challen, G. A. (2020). Divergent Effects of Dnmt3a and Tet2 Mutations on Hematopoietic Progenitor Cell Fitness. Stem Cell Reports, 0(0). https://doi.org/10.1016/j.stemcr.2020.02.011 Cite
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Integrin-Linked Kinase Mediates Therapeutic Resistance of Quiescent CML Stem Cells to Tyrosine Kinase Inhibitors

Researchers showed integrin-linked kinase, a key constituent of focal adhesions, is highly expressed in TKI-nonresponsive patient cells and their LSCs.
[Cell Stem Cell]
Ostrander, E. L., Kramer, A. C., Mallaney, C., Celik, H., Koh, W. K., Fairchild, J., Haussler, E., Zhang, C. R. C., & Challen, G. A. (2020). Divergent Effects of Dnmt3a and Tet2 Mutations on Hematopoietic Progenitor Cell Fitness. Stem Cell Reports, 0(0). https://doi.org/10.1016/j.stemcr.2020.02.011 Cite
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