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TP53 gene mutations are present in more than half of all human cancers. The resulting proteins are mostly full-length with a single amino acid change and are abundantly expressed in cancer cells. Some of the mutant p53 proteins gain oncogenic functions (GOF) through which it actively contribute to the aberrant cell proliferation, increased resistance to apoptotic stimuli and ability to metastasize. Gain of function mutant p53 proteins can transcriptionally regulate the expression of a large plethora of target genes. This mainly occurs through the formation of oncogenic transcriptional competent complexes that include mutant p53 protein, known transcription factors, posttranslational modifiers and scaffold proteins. Mutant p53 protein can also transcriptionally regulate the expression of microRNAs, small non-coding RNAs that regulate gene expression at the posttranscriptional level. Each microRNA can putatively target the expression of hundred mRNAs and consequently impact on many cellular functions. Thus, gain of function mutant p53 proteins can exert their oncogenic activities through the modulation of both non-coding and coding regions of human genome. Over the past 3 decades, the regulation of p53 has been extensively studied. However, the regulation of mutant p53 remained largely unexplored. This snapshot focuses on recent discovery of mutant p53 GOF and regulation.

mouse models --- mutant p53 --- dominant netagive --- therapies --- Oncogenic addiction --- gain of function --- mouse models --- mutant p53 --- dominant netagive --- therapies --- Oncogenic addiction --- gain of function

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TP53 gene mutations are present in more than half of all human cancers. The resulting proteins are mostly full-length with a single amino acid change and are abundantly expressed in cancer cells. Some of the mutant p53 proteins gain oncogenic functions (GOF) through which it actively contribute to the aberrant cell proliferation, increased resistance to apoptotic stimuli and ability to metastasize. Gain of function mutant p53 proteins can transcriptionally regulate the expression of a large plethora of target genes. This mainly occurs through the formation of oncogenic transcriptional competent complexes that include mutant p53 protein, known transcription factors, posttranslational modifiers and scaffold proteins. Mutant p53 protein can also transcriptionally regulate the expression of microRNAs, small non-coding RNAs that regulate gene expression at the posttranscriptional level. Each microRNA can putatively target the expression of hundred mRNAs and consequently impact on many cellular functions. Thus, gain of function mutant p53 proteins can exert their oncogenic activities through the modulation of both non-coding and coding regions of human genome. Over the past 3 decades, the regulation of p53 has been extensively studied. However, the regulation of mutant p53 remained largely unexplored. This snapshot focuses on recent discovery of mutant p53 GOF and regulation.

mouse models --- mutant p53 --- dominant netagive --- therapies --- Oncogenic addiction --- gain of function

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Galectins are a family of soluble beta-galactoside-binding proteins with diverse glycan-dependent and glycan-independent functions outside and inside the cell. There are sixteen recognized mammalian galectin genes, and their expression profiles are very different between cell types, tissues, and species. This Special Issue covers recent progress in the field of the cell biology of galectins, relevant concepts of galectin regulatory mechanisms, and biomedical aspects of these unique multifunctional proteins.

galectin-7 --- p53 --- MMP-9 --- cancer --- gain-of-function --- vasculature --- gene expression --- tube formation --- sprouting --- VEGF --- integrins --- galectin --- extracellular matrix --- microenvironment --- Yersinia enterocolitica --- YopP --- Galectin-1 --- nitric oxide --- macrophages --- epithelial tissues --- apoptosis --- targeting --- inhibitors --- β-hairpin --- β-sandwich --- blood group B --- lectin --- sugar code --- LGALS16 --- placenta --- brain tissues --- cell differentiation --- transcription factor --- miRNA --- galectin-3 --- cardiac fibrosis --- heart failure --- atrial fibrillation --- chronic inflammation --- MMPs --- microRNAs --- lncRNAs --- pectin --- structure and function --- bioactive polysaccharides --- galectin-3 inhibition --- galacto-oligosaccharides --- galectins --- intestinal epithelial cells --- β-3′galactosyllactose --- immunomodulation --- mucosal immunity --- O-GlcNAc --- unconventional secretion --- extraembryonic endoderm --- n/a --- β-3'galactosyllactose

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Every minute, 34 new patients are diagnosed with cancer globally. Although over the past 50 years treatments have improved and survival rates have increased dramatically for several types of cancers, many remain incurable. Several aggressive types of blood and solid cancers form when mutations occur in a critical cellular signaling pathway, the JAK-STAT pathway; (Janus Kinase-Signal Transducer and Activator of Transcription). Currently, there are no clinically available drugs that target the oncogenic STAT3/5 proteins in particular or their Gain of Function hyperactive mutant products. Here, we summarize targeting approaches on STAT3/5, as the field moves towards clinical applications as well as we illuminate on upstream or downstream JAK-STAT pathway interference with kinase inhibitors, heat shock protein blockers or changing nuclear import/export processes. We cover the design paradigms and medicinal chemistry approaches to illuminate progress and challenges in understanding the pleiotropic role of STAT3 and STAT5 in oncogenesis, the microenvironment, the immune system in particular, all culminating in a complex interplay towards cancer progression.

Research & information: general --- Biology, life sciences --- multiple myeloma --- STAT3 --- S3I-1757 --- nanoparticle --- CD38 --- siRNA/RNAi --- polyethylenimine --- PEI --- lipopolyplex --- siRNA delivery --- glioma --- glioblastoma --- STAT5 --- AKT --- ERK1/2 --- prolactin --- androgens --- prostate cancer --- knockout --- escape mechanisms --- stem/progenitor cells --- cell hierarchy --- cancer --- CD4+ T cells --- CD8+ T cells --- myeloid cells --- immune check point --- hepatitis C virus (HCV) --- cirrhosis --- hepatocellular carcinoma (HCC) --- endoplasmic reticulum (ER) stress --- oxidative stress (OS) --- unfolded protein response (UPR) --- microRNA-122 (miR-122) --- nuclear factor erythroid 2-related factor 2 (NRF2) --- signal transducer and activator of transcription 3 (STAT3) --- hepatocyte nuclear factor 4 alpha (HNF4A) --- solid cancers --- cell cycle --- apoptosis --- inflammation --- mitochondria --- stemness --- tumor suppression --- melanoma --- autoimmune disease --- immunotherapy --- tumor-immune cell interactions --- breast cancer --- PD-L1 --- M2 macrophages --- NK cells --- STAT3 inhibitor XIII --- hedging --- transaction costs --- dynamic programming --- risk management --- post-decision state variable --- cancer progression --- cancer-stem cell --- cytokine --- therapy resistance --- metastasis --- immunosuppression --- tumor microenvironment --- proliferation --- tyrosine kinase 2 --- JAK family of protein tyrosine kinases --- signal transducer and activator of transcription --- cytokine receptor signaling --- gain-of-function mutation --- tumorigenesis --- ADAM17 --- interleukin-6 --- trans-signaling --- epidermal growth factor receptor (EGF-R) --- shedding --- metalloprotease --- tumor necrosis factor alpha (TNFα) --- inflammation associated cancer --- colon cancer --- lung cancer --- SH2 domain --- mutations --- autosomal-dominant hyper IgE syndrome --- inflammatory hepatocellular adenomas --- T-cell large granular lymphocytic leukemia --- T-cell prolymphocytic leukemia --- growth hormone insensitivity syndrome --- nuclear pore complex --- nuclear transport receptors --- nucleocytoplasmic shuttling --- targeting --- tumor-associated macrophages --- adoptive T cell therapy --- immune suppression --- STAT transcription factors --- JAK --- STAT --- T-PLL --- T-cell leukemia --- meta-analysis --- STAT5B signaling --- small-molecule inhibitors --- cancer models --- companion animals --- comparative oncology --- pharmacological inhibitor --- STAT5 signaling --- chemotherapy resistance --- myeloid leukemia --- heat shock proteins --- chaperones --- stabilization --- targeted therapy --- ovarian cancer --- hematopoietic cancers --- therapeutic targeting --- pharmacological inhibitors --- mTOR --- Bone Marrow Failure Syndromes --- lymphocytes --- lymphoma --- T-cells --- RHOA --- NGS --- MPN --- JAK2 V617F --- neoplastic stem cells --- multiple myeloma --- STAT3 --- S3I-1757 --- nanoparticle --- CD38 --- siRNA/RNAi --- polyethylenimine --- PEI --- lipopolyplex --- siRNA delivery --- glioma --- glioblastoma --- STAT5 --- AKT --- ERK1/2 --- prolactin --- androgens --- prostate cancer --- knockout --- escape mechanisms --- stem/progenitor cells --- cell hierarchy --- cancer --- CD4+ T cells --- CD8+ T cells --- myeloid cells --- immune check point --- hepatitis C virus (HCV) --- cirrhosis --- hepatocellular carcinoma (HCC) --- endoplasmic reticulum (ER) stress --- oxidative stress (OS) --- unfolded protein response (UPR) --- microRNA-122 (miR-122) --- nuclear factor erythroid 2-related factor 2 (NRF2) --- signal transducer and activator of transcription 3 (STAT3) --- hepatocyte nuclear factor 4 alpha (HNF4A) --- solid cancers --- cell cycle --- apoptosis --- inflammation --- mitochondria --- stemness --- tumor suppression --- melanoma --- autoimmune disease --- immunotherapy --- tumor-immune cell interactions --- breast cancer --- PD-L1 --- M2 macrophages --- NK cells --- STAT3 inhibitor XIII --- hedging --- transaction costs --- dynamic programming --- risk management --- post-decision state variable --- cancer progression --- cancer-stem cell --- cytokine --- therapy resistance --- metastasis --- immunosuppression --- tumor microenvironment --- proliferation --- tyrosine kinase 2 --- JAK family of protein tyrosine kinases --- signal transducer and activator of transcription --- cytokine receptor signaling --- gain-of-function mutation --- tumorigenesis --- ADAM17 --- interleukin-6 --- trans-signaling --- epidermal growth factor receptor (EGF-R) --- shedding --- metalloprotease --- tumor necrosis factor alpha (TNFα) --- inflammation associated cancer --- colon cancer --- lung cancer --- SH2 domain --- mutations --- autosomal-dominant hyper IgE syndrome --- inflammatory hepatocellular adenomas --- T-cell large granular lymphocytic leukemia --- T-cell prolymphocytic leukemia --- growth hormone insensitivity syndrome --- nuclear pore complex --- nuclear transport receptors --- nucleocytoplasmic shuttling --- targeting --- tumor-associated macrophages --- adoptive T cell therapy --- immune suppression --- STAT transcription factors --- JAK --- STAT --- T-PLL --- T-cell leukemia --- meta-analysis --- STAT5B signaling --- small-molecule inhibitors --- cancer models --- companion animals --- comparative oncology --- pharmacological inhibitor --- STAT5 signaling --- chemotherapy resistance --- myeloid leukemia --- heat shock proteins --- chaperones --- stabilization --- targeted therapy --- ovarian cancer --- hematopoietic cancers --- therapeutic targeting --- pharmacological inhibitors --- mTOR --- Bone Marrow Failure Syndromes --- lymphocytes --- lymphoma --- T-cells --- RHOA --- NGS --- MPN --- JAK2 V617F --- neoplastic stem cells