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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

breast cancer --- mammary gland --- development --- imaging --- microenviroment --- organoid --- signaling --- omics

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Science: general issues --- metabolic glycoengineering --- ManNAc analogs --- breast cancer --- sialylation --- sialic acid --- metabolic flux --- metabolic glycoengineering --- ManNAc analogs --- breast cancer --- sialylation --- sialic acid --- metabolic flux

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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact

Science: general issues --- Biology, life sciences --- breast cancer --- mammary gland --- development --- imaging --- microenviroment --- organoid --- signaling --- omics

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Treatment strategies for breast cancer are wide-ranging and often based on a multi-modality approach, depending on the stage and biology of the tumour and the acceptance and tolerance of the patient. They may include surgery, radiotherapy, and systemic therapy (endocrine therapy, chemotherapy, and targeted therapy). Advances in technologies such as oncoplastic surgery, radiation planning and delivery, and genomics, and the development of novel systemic therapy agents alongside their evaluation in ongoing clinical trials continue to strive for improvements in outcomes. In this Special Issue, we publish a collection of studies looking at all forms of therapeutic strategies for early and advanced breast cancer, focusing on their outcomes, notably survival.

relative survival --- young women --- cancer treatment --- n/a --- fulvestrant --- lapatinib --- tumor biology --- antihormone therapy --- mastectomy --- aromatase inhibitors --- chemotherapy --- serum biomarker --- cyclin E --- anthracycline resistance --- zero-inflated Poisson regression model --- lymph-node ratio --- CHEK2 --- comparative effectiveness --- breast-conserving therapy --- taxane sensitivity --- liquid biopsy --- HER2 c-erbB2 --- colorectal cancer --- infiltrating breast cancer --- survival --- exercise characteristics --- lactate dehydrogenase --- biomarker --- breast cancer survivors --- BRCA --- disease-free survival --- PIK3CA --- metastatic breast cancer --- cell-free DNA --- invasive breast cancer --- radiotherapy --- Metformin --- social well-being --- gene expression --- contralateral breast cancer --- basal-like breast cancer --- LMK-235 --- Src kinase --- HER2/neu --- LKB1 --- Older women --- LDH --- mutation carriers --- stage IV --- mammography screening --- NCDB --- cMet --- SEER --- pertuzumab --- physical function --- outcome --- ribociclib --- older patients --- geriatric oncology --- metastatic --- overdiagnosis --- next-generation sequencing --- abemaciclib --- Endocrine therapy --- monitoring metastatic breast cancer --- breast cancer --- circulating tumor cells --- Breast Cancer --- PALB2 --- histone deacetylase --- prognosis --- physical activity --- trastuzumab --- ductal carcinoma in situ --- contralateral prophylactic mastectomy --- ERCC1 --- family history --- T-DM1 --- ATM --- advanced breast cancer --- incidence --- palbociclib --- HDAC5 inhibitors --- APOBEC3B

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The cancer stem cell (CSC) paradigm represents one of the most prominent breakthroughs of the last decades in tumor biology. CSCs are that subpopulation within a tumor that can survive conventional therapies and as a consequence are able to fuel tumor recurrence. Nevertheless, the biological characteristics of CSCs and even their existence, remain the main topic among tumor biologists debates. The difficulty in achieving a better definition of CSC biology may actually be explained by the plasticity of such a cell subpopulation. Indeed, the emerging view is that CSCs represent a dynamic “state” of tumor cells that can acquire stemness-related properties under specific circumstances, rather than referring to a well-defined group of cells. Regardless of their origin, it is clear that designing novel antitumor treatments based on the eradication of CSCs will only be possible upon unraveling the biological mechanisms that underlie their pathogenic role in tumor progression and therapy resistance. The Special Issue on “New aspects of cancer stem cell biology: implications for innovative therapies” aims at highlighting recent insights into CSC features that can make them an attractive target for novel therapeutic strategies.

Cadherin 11 --- WNT signaling --- β-catenin --- cancer stem cells --- TNBC --- early breast cancer --- bevacizumab --- neoadjuvant chemotherapy --- ALDH1 --- solid cancer --- chemo-resistance --- HDAC inhibitors --- head and neck squamous cell carcinoma --- SRC --- dasatinib --- saracatinib --- EC-8042 --- Ovarian cancer --- Wnt signaling --- tumor progression --- therapy resistance --- exosomes --- oral cancer risk --- oral epithelial dysplasia --- SOX2 --- immunohistochemistry --- oral squamous cell carcinoma --- genome-wide --- transcriptome --- lung cancer --- ATAC-seq --- RNA-seq --- CSCs --- NSCLC --- B4GALT1 --- LUAD --- breast cancer --- lipid --- metabolism --- therapeutic resistance --- bowel cancer --- organoid --- tumoroid --- colorectal --- colon --- stem cell --- chemotherapy resistance --- ovarian cancer --- cancer stem cell --- genetic heterogeneity --- SNP array --- L1CAM --- chemoresistance --- epithelial-mesenchymal transition --- cancer therapy --- cell adhesion molecule