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| Open AccessThe bone ecosystem facilitates multiple myeloma relapse and the evolution of heterogeneous drug resistant disease
Here, the authors develop a hybrid agent-based model to quantify the contributions of intrinsic cellular mechanisms and bone ecosystem factors to therapy resistance in multiple myeloma. They show that intrinsic mechanisms are essential for resistance, and that the bone microenvironment provides a protective niche that increases the likelihood.
- Ryan T. Bishop
- , Anna K. Miller
- & David Basanta
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| Open AccessTemporal chromatin accessibility changes define transcriptional states essential for osteosarcoma metastasis
The genomic and epigenomic landscape during metastasis in osteosarcoma remains to be investigated. Here, functional and pharmacological studies identify the dynamic epigenomic changes and gene vulnerabilities during the formation of osteosarcoma tumours in the lung microenvironment.
- W. Dean Pontius
- , Ellen S. Hong
- & Peter C. Scacheri
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| Open AccessAlternative lengthening of telomeres (ALT) cells viability is dependent on C-rich telomeric RNAs
ALT cells use an alternative lengthening mechanism of telomeres and bear telomeric DNA damage with increased levels of damage-induced long non-coding RNA. Here the AUs show that antisense oligonucleotides (ASO) targeting such RNAs can induce ALT cancer cells selective cell death.
- Ilaria Rosso
- , Corey Jones-Weinert
- & Fabrizio d’Adda di Fagagna
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| Open AccessMapping the landscape of genetic dependencies in chordoma
Cancer cells possess unique molecular features that can confer an increased dependence on specific genes. Here, the authors use CRISPR-Cas9 screens to identify selectively essential genes and therapeutic targets in chordoma.
- Tanaz Sharifnia
- , Mathias J. Wawer
- & Stuart L. Schreiber
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| Open AccessRegulation of bone homeostasis by MERTK and TYRO3
The TAM family of receptor tyrosine kinases exerts pleiotropic functions in health and disease. Here, the authors show that TAM receptors control osteoblastic bone formation and identified MERTK as a novel target for bone anabolic therapy and mitigation of bone metastasis including its associated osteolytic bone disease
- Janik Engelmann
- , Jennifer Zarrer
- & Sonja Loges
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| Open AccessMetabolic control of CD47 expression through LAT2-mediated amino acid uptake promotes tumor immune evasion
Chemo-resistance and immune evasion are major challenges in osteosarcoma treatment. Here the authors show that doxorubicin promotes IL-18 secretion by tumor associated macrophages inducing LAT2-dependent CD47 upregulation in osteosarcoma cells, suggesting LAT2 inhibition as a therapeutic option in combination with doxorubicin.
- Zenan Wang
- , Binghao Li
- & Zhaoming Ye
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| Open AccessTherapeutic targeting of the PLK1-PRC1-axis triggers cell death in genomically silent childhood cancer
In this study, the authors show that that oncogenic hijacking of PRC1 sensitizes genomically stable Ewing sarcoma cells for PLK1 inhibition alone or in synergy with a microtubule-destabilizing drug via induction of cytokinesis defects, rendering PRC1 a promising, broadly applicable predictive biomarker
- Jing Li
- , Shunya Ohmura
- & Thomas G. P. Grünewald
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| Open AccessSTING suppresses bone cancer pain via immune and neuronal modulation
There is an unmet clinical need to develop therapies to alleviate metastatic bone pain, frequently observed in patients with advanced cancers. Here, using mouse models of bone cancer pain, the authors show that STING agonists not only suppress bone cancer tumor burden, but also attenuate bone pain and reduce cancer-induced bone destruction.
- Kaiyuan Wang
- , Christopher R. Donnelly
- & Ru-Rong Ji
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| Open AccessEngineered macrophages as near-infrared light activated drug vectors for chemo-photodynamic therapy of primary and bone metastatic breast cancer
Bone metastases are associated with poor prognosis in patients with breast cancer and limited therapeutic options. Here the authors exploit near-infrared light responsive macrophages for the tumor-selective delivery of oxaliplatin prodrug for chemo-photodynamic therapy of primary and bone metastatic breast cancer.
- Yanjuan Huang
- , Zilin Guan
- & Chunshun Zhao
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| Open AccessMesenchymal stem cell-derived interleukin-28 drives the selection of apoptosis resistant bone metastatic prostate cancer
The effects of bone-marrow derived MSCs on prostate cancer cells remain unknown. Here the authors show that MSC-derived IL-28 induces prostate cancer cell apoptosis via IL-28Rα-STAT1 signalling, while acquired resistance to apoptosis is associated with a shift in IL-28Rα signalling via STAT1 to STAT3.
- Jeremy J. McGuire
- , Jeremy S. Frieling
- & Conor C. Lynch
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| Open AccessSingle-cell RNA landscape of intratumoral heterogeneity and immunosuppressive microenvironment in advanced osteosarcoma
Osteosarcomas are difficult to treat and have a limited response to immunotherapy. Here, the authors analyse osteosarcomas at the single-cell level, and identify both the transdifferentiation of malignant cells and an array of immune cells that could have implications for metastasis and immunotherapy.
- Yan Zhou
- , Dong Yang
- & Haiyan Hu
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| Open AccessGlobally altered epigenetic landscape and delayed osteogenic differentiation in H3.3-G34W-mutant giant cell tumor of bone
The histone variant mutation H3.3-G34W occurs in the majority of giant cell tumor of bone (GCTB). By profiling patient-derived GCTB tumor cells, the authors show that this mutation associates with epigenetic alterations in heterochromatic and bivalent regions that contribute to an impaired osteogenic differentiation and the osteolytic phenotype of GCTB.
- Pavlo Lutsik
- , Annika Baude
- & Christoph Plass
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| Open AccessOncogenic hijacking of a developmental transcription factor evokes vulnerability toward oxidative stress in Ewing sarcoma
Ewing sarcoma is characterized by the fusion of EWSR1 and FLI1. Here, the authors show that EWSR1-FLI1 increases the activity of the developmental transcription factor SOX6, which promotes tumor growth but also increases sensitivity to oxidative stress.
- Aruna Marchetto
- , Shunya Ohmura
- & Thomas G. P. Grünewald
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| Open AccessImmuno-genomic landscape of osteosarcoma
The efficacy of immune checkpoint inhibitors (ICI) in osteosarcoma has been limited. Here, the authors investigate the immunogenomic landscape of osteosarcoma, and integrated analyses highlight features related to a suppressed immune microenvironment.
- Chia-Chin Wu
- , Hannah C. Beird
- & P. Andrew Futreal
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| Open AccessIntegrated molecular characterization of chondrosarcoma reveals critical determinants of disease progression
Chondrosarcomas are heterogenous tumours of the bone cartilage and have highly variable prognoses. Here, the authors perform a multi-omics analysis, revealing molecular features that can stratify clinical outcomes.
- Rémy Nicolle
- , Mira Ayadi
- & Gonzague de Pinieux
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| Open AccessCooperation of cancer drivers with regulatory germline variants shapes clinical outcomes
Interactions between germline variants and somatic mutations is a relatively unexplored topic in cancer. Here, in Ewing sarcoma, the authors show that binding of the oncogenic EWSR1-FLI1 fusion transcription factor to a polymorphic enhancer-like DNA element controls MYBL2, whose high expression correlates with prognosis.
- Julian Musa
- , Florencia Cidre-Aranaz
- & Thomas G. P. Grünewald
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| Open AccessClonal dynamics in osteosarcoma defined by RGB marking
Osteosarcoma is a heterogeneous bone tumour with a high mutational rate. Here the authors use an RGB-based single-cell tracking system to track clonal dynamics in a mouse model of osteosarcoma, which their findings indicate follows a neutral evolution model in which different clones simultaneously coexist and propagate.
- Stefano Gambera
- , Ander Abarrategi
- & Javier García-Castro
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| Open AccessA reliable murine model of bone metastasis by injecting cancer cells through caudal arteries
Reliably modelling bone metastasis in mice is essential for research. Here, the authors present a new murine model for cancer metastasis based on intra-caudal artery injection that reliably recapitulates bone metastasis.
- Takahiro Kuchimaru
- , Naoya Kataoka
- & Shinae Kizaka-Kondoh
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| Open AccessRecurrent rearrangements of FOS and FOSB define osteoblastoma
FOS has been linked to bone tumour pathogenesis, and viral homologue v-fos causes osteosarcoma in mice. Here, the authors report rearrangement of FOS and its paralogue FOSB in osteoblastoma and osteoid osteoma, revealing human bone tumours that are defined by mutations of FOS and FOSB.
- Matthew W. Fittall
- , William Mifsud
- & Sam Behjati
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| Open AccessRadionuclides transform chemotherapeutics into phototherapeutics for precise treatment of disseminated cancer
Most of the systemic cancer therapies lack spatiotemporal control. Here, the authors show targeted activation of a light-sensitive drug by radiopharmaceuticals in disseminated cancer cells as potential in vivo treatment of metastatic diseases with reduced off-target toxicity.
- Nalinikanth Kotagiri
- , Matthew L. Cooper
- & Samuel Achilefu
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| Open AccessThe driver landscape of sporadic chordoma
Chordoma is a rare often incurable malignant bone tumour. Here, the authors investigate driver mutations of sporadic chordoma in 104 cases, revealing duplications in notochordal transcription factor brachyury (T), PI3K signalling mutations, and mutations in LYST, a potential novel cancer gene in chordoma.
- Patrick S. Tarpey
- , Sam Behjati
- & Peter J. Campbell
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| Open AccessRecurrent mutation of IGF signalling genes and distinct patterns of genomic rearrangement in osteosarcoma
Osteosarcoma is a primary malignancy of bone that affects children and adults. Here, the authors sequence childhood and adult osteosarcomas, identifying mutations in insulin-like growth factor signalling genes and distinct genomic rearrangement profiles characterized by chromothripsis-amplification.
- Sam Behjati
- , Patrick S. Tarpey
- & Peter J. Campbell
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| Open AccessGenome-wide RNAi screening identifies TMIGD3 isoform1 as a suppressor of NF-κB and osteosarcoma progression
The ability of cancer cells to survive in anchorage-independent conditions correlates with cancer aggressiveness. Here, by screening a human whole-genome shRNA library for the ability of osteosarcoma cells to form spheres in vitro, the authors identify a role for TMIGD3 isoform 1 in suppressing the metastatic potential of osteosarcoma.
- Swathi V. Iyer
- , Atul Ranjan
- & Tomoo Iwakuma
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| Open AccessExome sequencing of osteosarcoma reveals mutation signatures reminiscent of BRCA deficiency
Osteosarcomas are a heterogenous group of tumours and little is known about how these tumours evolve. Here, Kovac et al. use exome sequencing and discover that although no driver gene explains the majority of these tumours, they are characterized by specific mutation signatures and genomic instability typical of BRCA1/2-deficient tumours.
- Michal Kovac
- , Claudia Blattmann
- & Daniel Baumhoer
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Article |
Sox2 antagonizes the Hippo pathway to maintain stemness in cancer cells
Transcriptional regulators Sox2 and YAP maintain expression of stemness genes in normal and cancerous cells. Here the authors show that, in osteosarcomas, Sox2 activates YAP by directly repressing transcription of its upstream negative regulators Nf2 and WWC1, promoting cancer cell stemness.
- Upal Basu-Roy
- , N. Sumru Bayin
- & Claudio Basilico
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Article |
Selective inhibition of BET bromodomain epigenetic signalling interferes with the bone-associated tumour vicious cycle
A major problem in the treatment of bone tumours and metastases is the vicious cycle between bone tumours and resorption. Here, the authors show that treatment with the BET bromodomain inhibitor JQ1 inhibits osteoblast and osteoclast differentiation, and bone tumour development.
- François Lamoureux
- , Marc Baud’huin
- & Benjamin Ory