Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Landscapes --- Earth analogs. --- Nature (Aesthetics) --- Landforms --- Cosmology. --- Symbolic aspects

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

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

metabolic glycoengineering --- ManNAc analogs --- breast cancer --- sialylation --- sialic acid --- metabolic flux

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Nucleosides --- Nucleotides --- Nucleic acids --- Nucleic Acids --- Acids, Nucleic --- Polynucleotides --- Phosphonucleosides --- Nucleoside Analogs --- Analogs, Nucleoside --- Biomolecules --- Nucleotide --- Nucleic Acid --- Acid, Nucleic --- Nucleoside --- Nucleoside Analog --- Analog, Nucleoside --- Nucleosides. --- Nucleic Acids. --- Nucleotides. --- Chemistry of natural organic substances --- Molecular biology --- moleculaire biologie

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Clinical interest in the camptothecins continues to expand even though this class of topoisomerase I inhibitors has been studied for almost 50 years, and two early generation members of the family have gained FDA approval. In Camptothecins in Cancer Therapy, leading clinicians and researchers critically review our current understanding of camptothecins, their shortcomings, and the possibilities for improving their clinical performance. The authors discuss new camptothecin analog development, drug delivery issues for optimizing their anticancer activity, and their potential use in a variety of different cancers. Additional chapters describe what is known about the biochemistry, the pharmacology, and the chemistry of the camptothecins, including the mechanism of topoisomerase and how camptothecins poison this enzyme, the use of animal models in defining the anticancer potential of camptothecins, and the question of camptothecin resistance. Authoritative and up-to-date, Camptothecins in Cancer Therapy provides a comprehensive summary of camptothecin research, as well as a much-needed guide to all the latest information on their optimal therapeutic applications.

Camptothecin --- Neoplasms --- Antineoplastic Agents, Phytogenic --- Camptothecin. --- Cancer --- therapeutic use. --- drug therapy. --- analogs & derivatives. --- pharmacology. --- Chemotherapy. --- Chimiothérapie --- Chemotherapy --- therapeutic use --- drug therapy --- analogs and derivatives --- pharmacology --- Cancer -- Chemotherapy. --- Alkaloids --- Diseases --- Therapeutics --- Antineoplastic Agents --- Biological Science Disciplines --- Therapeutic Uses --- Natural Science Disciplines --- Heterocyclic Compounds --- Analytical, Diagnostic and Therapeutic Techniques and Equipment --- Disciplines and Occupations --- Chemicals and Drugs --- Pharmacologic Actions --- Chemical Actions and Uses --- Pharmacology --- Drug Therapy --- Medicine --- Health & Biological Sciences --- Oncology --- Medicine. --- Oncology. --- Medicine & Public Health. --- Tumors --- Clinical sciences --- Medical profession --- Human biology --- Life sciences --- Medical sciences --- Pathology --- Physicians --- Antineoplastic agents --- Antiviral agents --- Treatment --- Oncology  . --- Cancer - Chemotherapy --- Camptothecin - therapeutic use --- Neoplasms - drug therapy --- Antineoplastic Agents, Phytogenic - therapeutic use --- Camptothecin - analogs and derivatives --- Camptothecin - pharmacology

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Polyamines are ubiquitous polycations essential for all cellular life. The most common polyamines in eukaryotes, spermine, spermidine, and putrescine, exist in millimolar intracellular concentrations that are tightly regulated through biosynthesis, catabolism, and transport. Polyamines interact with, and regulate, negatively charged macromolecules, including nucleic acids, proteins, and ion channels. Accordingly, alterations in polyamine metabolism affect cellular proliferation and survival through changes in gene expression and transcription, translation, autophagy, oxidative stress, and apoptosis. Dysregulation of these multifaceted polyamine functions contribute to multiple disease processes, thus their metabolism and function have been targeted for preventive or therapeutic intervention. The correlation between elevated polyamine levels and cancer is well established, and ornithine decarboxylase, the rate-limiting biosynthetic enzyme in the production of putrescine, is a bona fide transcriptional target of the Myc oncogene. Furthermore, induced polyamine catabolism contributes to carcinogenesis that is associated with certain forms of chronic infection and/or inflammation through the production of reactive oxygen species. These and other characteristics specific to cancer cells have led to the development of polyamine-based agents and inhibitors aimed at exploiting the polyamine metabolic pathway for chemotherapeutic and chemopreventive benefit. In addition to cancer, polyamines are involved in the pathologies of neurodegenerative diseases including Alzheimer’s and Parkinson’s, parasitic and infectious diseases, wound healing, ischemia/reperfusion injuries, and certain age-related conditions, as polyamines are known to decrease with age. As in cancer, polyamine-based therapies for these conditions are an area of active investigation. With recent advances in immunotherapy, interest has increased regarding polyamine-associated modulation of immune responses, as well as potential immunoregulation of polyamine metabolism, the results of which could have relevance to multiple disease processes. The goal of this Special Issue of Medical Sciences is to present the most recent advances in polyamine research as it relates to health, disease, and/or therapy.

protein synthesis in cancer --- neuroblastoma --- epigenetics --- Drosophila imaginal discs --- pneumococcal pneumonia --- transgenic mice --- spermidine/spermine N1-acetyl transferase --- ?-difluoromethylornithine --- MYC --- skeletal muscle --- protein expression --- curcumin --- colorectal cancer --- autophagy --- human embryonic kidney 293 (HEK293) --- melanoma --- tumor immunity --- Snyder-Robinson Syndrome --- Streptococcus pneumoniae --- B-lymphocytes --- autoimmunity --- spermine oxidase --- cell differentiation --- diferuloylmethane --- immunity --- antizyme --- transgenic mouse --- polyamine --- hirsutism --- chemoprevention --- CRISPR --- transglutaminase --- polyamine analogs --- NF-?B --- spermine synthase --- atrophy --- aging --- oxidative stress --- mast cells --- African sleeping sickness --- pancreatic ductal adenocarcinoma --- eflornithine --- carcinogenesis --- ornithine decarboxylase --- polyamine transport inhibitor --- putrescine --- neutrophils --- spermidine --- untranslated region --- spermine --- polyphenol --- M2 macrophages --- polyamine transport system --- metabolism --- difluoromethylorthinine --- DFMO --- antizyme inhibitors --- capsule --- polyamine transport --- eosinophils --- MCF-7 cells --- difluoromethylornithine --- polyamine metabolism --- mutant BRAF --- polyamines --- cadaverine --- proteomics --- airway smooth muscle cells --- breast cancer --- X-linked intellectual disability --- complementation --- T-lymphocytes --- bis(ethyl)polyamine analogs --- antizyme 1 --- cancer --- osteosarcoma