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Reprogramation

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https://www.readbyqxmd.com/read/29346528/a-novel-stromal-lncrna-signature-reprograms-fibroblasts-to-promote-the-growth-of-oral-squamous-cell-carcinoma-via-lncrna-caf-interleukin-33
#1
Liang Ding, Jing Ren, Dongya Zhang, Yi Li, Xiaofeng Huang, Qingang Hu, Hui Wang, Yuxian Song, Yanhong Ni, Yayi Hou
Stromal carcinoma-related fibroblasts (CAFs) are the main type of non-immune cells in the tumor microenvironment (TME). CAFs interact with cancer cells to promote tumor proliferation. Long non-coding RNAs (lncRNAs) are known to regulate cell growth, apoptosis, and metastasis of cancer cells, but their role in stromal cells is unclear. Using RNA sequencing, we identified a stromal lncRNA signature during the transformation of CAFs from normal fibroblasts (NFs) in oral squamous cell carcinoma (OSCC). We uncovered an uncharacterized lncRNA, FLJ22447, which was remarkably up-regulated in CAFs, referred to LncRNA-CAF (Lnc-CAF) hereafter...
January 13, 2018: Carcinogenesis
https://www.readbyqxmd.com/read/29346301/braf-and-mek-inhibitors-influence-the-function-of-reprogrammed-t-cells-consequences-for-adoptive-t-cell-therapy
#2
Jan Dörrie, Lek Babalija, Stefanie Hoyer, Kerstin F Gerer, Gerold Schuler, Lucie Heinzerling, Niels Schaft
BRAF and MEK inhibitors (BRAFi/MEKi), the standard treatment for patients with BRAFV600 mutated melanoma, are currently explored in combination with various immunotherapies, notably checkpoint inhibitors and adoptive transfer of receptor-transfected T cells. Since two BRAFi/MEKi combinations with similar efficacy are approved, potential differences in their effects on immune cells would enable a rational choice for triple therapies. Therefore, we characterized the influence of the clinically approved BRAFi/MEKi combinations dabrafenib (Dabra) and trametinib (Tram) vs...
January 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29346164/the-nuclear-receptor-nor-1-is-a-pleiotropic-regulator-of-exercise-induced-adaptations
#3
Michael A Pearen, George E O Muscat
Exercise induces various physical and metabolic changes in skeletal muscle that adaptively reprograms this tissue to current physiological and environmental demands. Underlying these changes are broad modifications to gene expression. We postulate that the nuclear hormone receptor, Nor-1, is activated following exercise and this transcription factor modifies gene expression to drive the molecular and cellular adaptations associated with contractile reorganization.
January 15, 2018: Exercise and Sport Sciences Reviews
https://www.readbyqxmd.com/read/29345901/playing-with-the-molecules-of-life
#4
Douglas D Young, Peter G Schultz
Our understanding of the complex molecular processes of living organisms is growing exponentially. This knowledge, togeth-er with a powerful arsenal of tools for manipulating the structures of biological macromolecules, is allowing chemists to begin to harness and reprogram the remarkable machinery of life. Here we review one such example in which the genetic code itself has been expanded with new building blocks that allow us to probe and manipulate the structures and functions of proteins in ways previously unimaginable...
January 18, 2018: ACS Chemical Biology
https://www.readbyqxmd.com/read/29345056/for-when-bacterial-infections-persist-toll-like-receptor-inducible-direct-antimicrobial-pathways-in-macrophages
#5
REVIEW
Claudia J Stocks, Mark A Schembri, Matthew J Sweet, Ronan Kapetanovic
Macrophages are linchpins of innate immunity, responding to invading microorganisms by initiating coordinated inflammatory and antimicrobial programs. Immediate antimicrobial responses, such as NADPH-dependent reactive oxygen species (ROS), are triggered upon phagocytic receptor engagement. Macrophages also detect and respond to microbial products through pattern recognition receptors (PRRs), such as TLRs. TLR signaling influences multiple biological processes including antigen presentation, cell survival, inflammation, and direct antimicrobial responses...
January 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29345024/being-pluripotent-bone-marrow-vsels-rather-than-hscs-have-the-potential-to-regenerate-other-adult-organs
#6
REVIEW
Deepa Bhartiya
Recent study by Deanne's group provides evidence that transplanted GFP positive bone marrow hematopoietic stem cells (HSCs) expressing CD45 do not regenerate the endometrium of irradiated mice. The results do not surprise us since global efforts to regenerate various organs by transplanting bone marrow (BM) mononuclear cells (presumably enriched for HSCs) have failed. HSCs can only regenerate/reconstitute BM as they are 'committed progenitors' that are specified from more primitive, CD45 negative stem cells...
January 18, 2018: Stem Cells
https://www.readbyqxmd.com/read/29345000/cell-death-under-epithelial-mesenchymal-transition-control-in-prostate-cancer-therapeutic-response
#7
REVIEW
Diane Begemann, Harry Anastos, Natasha Kyprianou
Prostate cancer is a widespread problem among men, with >160 000 new cases in 2017 alone. Androgen deprivation therapy is commonly used in prostate cancer treatment to block androgens required for cancer growth, but disease relapse after androgen deprivation therapy is both common and severe. Changes in androgen receptor signaling from androgen deprivation therapy have been linked to therapeutic resistance and tumor progression. Resistant cells can become reprogrammed to undergo epithelial-mesenchymal transition, a phenotypic switch from benign, epithelial cells to a mobile cell with mesenchymal traits...
January 17, 2018: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/29344557/in-colonic-%C3%AF-0-rho0-cells-reduced-mitochondrial-function-mediates-transcriptomic-alterations-associated-with-cancer
#8
Harrison M Penrose, Sandra Heller, Chloe Cable, Hani Nakhoul, Nate Ungerleider, Melody Baddoo, Zachary F Pursell, Erik K Flemington, Susan E Crawford, Suzana D Savkovic
Background: Mitochondrial reprogramming has emerged as a hallmark of cancer pathobiology. Although it is believed this reprogramming is essential for cancer cells to thrive, how it supports cancer pathobiology is unclear. We previously generated colonic ρ0 (rho0) cells with reduced mitochondrial energy function and acquired their transcriptional signature. Here, we utilized a bioinformatics approach to identify their changes linked to cancer pathobiology. Methods: Human colon cancer HCT116 cells, control and ρ0, were used for qPCR...
November 2017: Oncoscience
https://www.readbyqxmd.com/read/29344553/reprogramming-patient-derived-tumor-cells-generates-model-cell-lines-for-tuberous-sclerosis-associated-lymphangioleiomyomatosis
#9
EDITORIAL
Lisa M Julian, William L Stanford
No abstract text is available yet for this article.
November 2017: Oncoscience
https://www.readbyqxmd.com/read/29344170/phosphorylation-of-ser6-in-hnrnpa1-by-s6k2-regulates-glucose-metabolism-and-cell-growth-in-colorectal-cancer
#10
Yan Sun, Man Luo, Guilin Chang, Weiying Ren, Kefen Wu, Xi Li, Jiping Shen, Xiaoping Zhao, Yu Hu
Abnormal glucose metabolism is critical in colorectal cancer (CRC) development. Expression of the pyruvate kinase (PK) M2 isoform, rather than the PKM1 isoform, serves important functions in reprogramming the glucose metabolism of cancer cells. Preferential expression of PKM2 is primarily driven by alternative splicing, which is coordinated by a group of splicing factors including heterogeneous nuclear ribonucleoprotein (hnRNP)A1, hnRNPA2 and RNA binding motif containing. However, the underlying molecular mechanisms associated with cancer cell expression of PKM2, instead of PKM1, remain unknown...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343435/paracrine-wnt5a-%C3%AE-catenin-signaling-triggers-a-metabolic-program-that-drives-dendritic-cell-tolerization
#11
Fei Zhao, Christine Xiao, Kathy S Evans, Tbalamayooran Theivanthiran, Nicholas DeVito, Alisha Holtzhausen, Juan Liu, Xiaojing Liu, David Boczkowski, Smita Nair, Jason W Locasale, Brent A Hanks
Despite recent advances, many cancers remain refractory to available immunotherapeutic strategies. Emerging evidence indicates that the tolerization of local dendritic cells (DCs) within the tumor microenvironment promotes immune evasion. Here, we have described a mechanism by which melanomas establish a site of immune privilege via a paracrine Wnt5a-β-catenin-peroxisome proliferator-activated receptor-γ (PPAR-γ) signaling pathway that drives fatty acid oxidation (FAO) in DCs by upregulating the expression of the carnitine palmitoyltransferase-1A (CPT1A) fatty acid transporter...
January 16, 2018: Immunity
https://www.readbyqxmd.com/read/29343174/small-molecules-for-neural-stem-cell-induction
#12
Donghui Liu, Nimshitha Pavathuparambil Abdul Manaph, Mohammed Al-Hawwas, Xin-Fu Zhou, Hong Liao
Generation of induced pluripotent stem cells (iPSCs) from other somatic cells has provided great hopes for transplantation therapies. However, these cells still cannot be used for clinical application due to the low reprogramming and differentiation efficiency beside the risk of mutagenesis and tumor formation. Compared to iPSCs, induced neural stem cells (iNSCs) are easier to terminally differentiate into neural cells and safer, thus, iNSCs hold more opportunities than iPSCs to treat neural diseases. On the other hand, recent studies have showed that small molecules (SMs) can dramatically improve the efficiency of reprogramming and SMs alone can even convert one kind of somatic cells into another, which is much safer and more effective than transcription factor-based methods...
January 17, 2018: Stem Cells and Development
https://www.readbyqxmd.com/read/29342871/interferons-reprogramming-the-metabolic-network-against-viral-infection
#13
REVIEW
Kavita Raniga, Chen Liang
Viruses exploit the host and induce drastic metabolic changes to ensure an optimal environment for replication and the production of viral progenies. In response, the host has developed diverse countermeasures to sense and limit these alterations to combat viral infection. One such host mechanism is through interferon signaling. Interferons are cytokines that enhances the transcription of hundreds of interferon-stimulated genes (ISGs) whose products are key players in the innate immune response to viral infection...
January 13, 2018: Viruses
https://www.readbyqxmd.com/read/29342092/metabolic-alterations-in-cancer-cells-and-the-emerging-role-of-oncometabolites-as-drivers-of-neoplastic-change
#14
REVIEW
Zhengqiu Zhou, Elochukwu Ibekwe, Yevgen Chornenkyy
The mitochondrion is an important organelle and provides energy for a plethora of intracellular reactions. Metabolic dysregulation has dire consequences for the cell, and alteration in metabolism has been identified in multiple disease states-cancer being one. Otto Warburg demonstrated that cancer cells, in the presence of oxygen, undergo glycolysis by reprogramming their metabolism-termed "aerobic glycolysis". Alterations in metabolism enable cancer cells to gain a growth advantage by obtaining precursors for macromolecule biosynthesis, such as nucleic acids and lipids...
January 17, 2018: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29341112/conditionally-reprogrammed-cells-crc-methodology-does-not-allow-the-in-vitro-expansion-of-patient-derived-primary-and-metastatic-lung-cancer-cells
#15
Giovanni Sette, Valentina Salvati, Ilenia Giordani, Emanuela Pillozzi, Denise Quacquarini, Enrico Duranti, Francesca De Nicola, Matteo Pallocca, Maurizio Fanciulli, Mario Falchi, Roberto Pallini, Ruggero De Maria, Adriana Eramo
Availability of tumor and non-tumor patient-derived models would promote the development of more effective therapeutics for Non Small Cell Lung Cancer (NSCLC). Recently, conditionally reprogrammed cells (CRC) methodology demonstrated exceptional potential for the expansion of epithelial cells from patient tissues. However, the possibility to expand patient-derived lung cancer cells using CRC protocols is controversial. Here, we used CRC approach to expand cells from non-tumoral and tumor biopsies of patients with primary or metastatic NSCLC as well as pulmonary metastases of colorectal or breast cancers...
January 17, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29339820/histone-variant-macroh2a1-plays-an-isoform-specific-role-in-suppressing-epithelial-mesenchymal-transition
#16
Dayle Q Hodge, Jihong Cui, Matthew J Gamble, Wenjun Guo
Epithelial-Mesenchymal Transition (EMT) is a biological program that plays key roles in various developmental and pathological processes. Although much work has been done on signaling pathways and transcription factors regulating EMT, the epigenetic regulation of EMT remains not well understood. Histone variants have been recognized as a key group of epigenetic regulators. Among them, macroH2A1 is involved in stem cell reprogramming and cancer progression. We postulated that macroH2A1 may play a role in EMT, a process involving reprogramming of cellular states...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29337900/age-related-epigenetic-derangement-upon-reprogramming-and-differentiation-of-cells-from-the-elderly
#17
REVIEW
Francesco Ravaioli, Maria G Bacalini, Claudio Franceschi, Paolo Garagnani
Aging is a complex multi-layered phenomenon. The study of aging in humans is based on the use of biological material from hard-to-gather tissues and highly specific cohorts. The introduction of cell reprogramming techniques posed promising features for medical practice and basic research. Recently, a growing number of studies have been describing the generation of induced pluripotent stem cells (iPSCs) from old or centenarian biologic material. Nonetheless, Reprogramming techniques determine a profound remodelling on cell epigenetic architecture whose extent is still largely debated...
January 16, 2018: Genes
https://www.readbyqxmd.com/read/29337061/metabolic-reprogramming-in-keloid-fibroblasts-aerobic-glycolysis-and-a-novel-therapeutic-strategy
#18
Qi Li, Zelian Qin, Fangfei Nie, Hongsen Bi, Runlei Zhao, Bailin Pan, Jianxun Ma, Xiang Xie
Keloids, tumor-like fibroproliferative cutaneous lesions, were reported in metabolic disturbance. However, the metabolic character remains unclear. The purpose of this study is to determine if glycolytic reprogramming is important for the pathogenesis of keloids and to assess the inhibition potential of glycolysis in keloid treatment. An intracellular metabolic profile assay was used to compare metabolic phenotypes between normal skin fibroblasts and keloid fibroblasts (NFs and KFs). Our data indicated that KFs underwent reprogramming of their metabolic phonotype from oxidative phosphorylation to aerobic glycolysis (Warburg effect) with augmented glycolysis and glycolytic capacity...
January 11, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29336997/modulation-of-nonessential-amino-acid-biosynthetic-pathways-in-virulent-hessian-fly-larvae-mayetiola-destructor-feeding-on-susceptible-host-wheat-triticum-aestivum
#19
Subhashree Subramanyam, Jacob T Shreve, Jill A Nemacheck, Alisha J Johnson, Brandi Schemerhorn, Richard H Shukle, Christie E Williams
Compatible interactions between wheat (Triticum aestivum), and its dipteran pest Hessian fly (Hf, Mayetiola destructor) result in successful establishment of larval feeding sites rendering the host plant susceptible. Virulent larvae employ an effector-based feeding strategy to reprogram the host physiology resulting in formation of a protein- and sugar-rich nutritive tissue beneficial to developing larvae. Previous studies documented increased levels of nonessential amino acids (NAA; that need not be received through insect diet) in the susceptible wheat in response to larval feeding, suggesting importance of plant-derived NAA in larval nutrition...
January 11, 2018: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29336607/alu-sirna-to-increase-alu-element-methylation-and-prevent-dna-damage
#20
Maturada Patchsung, Sirapat Settayanon, Monnat Pongpanich, Dharm Mutirangura, Pornrutsami Jintarith, Apiwat Mutirangura
Global DNA hypomethylation promoting genomic instability leads to cancer and deterioration of human health with age. AIM: To invent a biotechnology that can reprogram this process. METHODS: We used Alu siRNA to direct Alu interspersed repetitive sequences methylation in human cells. We evaluated the correlation between DNA damage and Alu methylation levels. RESULTS: We observed an inverse correlation between Alu element methylation and endogenous DNA damage in white blood cells...
January 16, 2018: Epigenomics
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