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Results and Problems in Cell Differentiation

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https://www.readbyqxmd.com/read/29149416/history-of-histamine-releasing-factor-hrf-translationally-controlled-tumor-protein-tctp-including-a-potential-therapeutic-target-in-asthma-and-allergy
#1
Susan M MacDonald
Histamine-releasing factor (HRF) also known as translationally controlled tumor protein (TCTP) is a highly conserved, ubiquitous protein that has both intracellular and extracellular functions. Here we will highlight the subcloning of the molecule, its clinical implications, as well as an inducible-transgenic mouse. Particular attention will be paid to its extracellular functioning and its potential role as a therapeutic target in asthma and allergy. The cells and the cytokines that are produced when stimulated or primed by HRF/TCTP will be detailed as well as the downstream signaling pathway that HRF/TCTP elicits...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149415/targeting-tctp-with-sertraline-and-thioridazine-in-cancer-treatment
#2
Robert Amson, Christian Auclair, Fabrice André, Judith Karp, Adam Telerman
We have initially demonstrated in knocking down experiments that decreasing TCTP in cancer cells leads in some tissues to cell death while in others to a complete reorganization of the tumor into architectural structures reminiscent of normal ones. Based on these experiments and a series of other findings confirming the key role of TCTP in cancer, it became important to find pharmacological compounds to inhibit its function, and this became for us a priority. In the present text, we explain in detail the experiments that were performed and the perspectives of sertraline in cancer treatment, as this became today a reality with a clinical study that started in collaboration with Columbia University and Johns Hopkins University...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149414/role-of-tctp-for-cellular-differentiation-and-cancer-therapy
#3
Ean-Jeong Seo, Nicolas Fischer, Thomas Efferth
The translationally controlled tumor protein (TCTP) is a highly conserved protein that is regulated due to a high number of extracellular stimuli. TCTP has an important role for cell cycle and normal development. On the other side, tumor reversion and malignant transformation have been associated with TCTP. TCTP has been found among the 12 genes that are differentially expressed during mouse oocyte maturation, and an overexpression of this gene was reported in a wide variety of different cancer types. Its antiapoptotic effect is indicated by the interaction with several proapoptotic proteins of the Bcl-2 family and the p53 tumor suppressor protein...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149413/tctp-has-a-crucial-role-in-the-different-stages-of-prostate-cancer-malignant-progression
#4
Virginie Baylot, Sara Karaki, Palma Rocchi
Prostate cancer (PC) is the second most common cause of cancer-related mortality in men in the western world after lung cancer. Many patients are not candidates for resection given the advanced stage of their cancer. The primary treatment for advanced PC is the castration therapy which supresses the production of androgens, hormone that promotes PC growth. Despite the efficiency of the castration therapy, most patients develop castration resistant disease which remains uncurable. Clearly, novel approaches are required to effectively treat castration resistant PC (CRPC)...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149412/the-translationally-controlled-tumor-protein-and-the-cellular-response-to-ionizing-radiation-induced-dna-damage
#5
Jie Zhang, Grace Shim, Sonia M de Toledo, Edouard I Azzam
The absorption of ionizing radiation by living cells can directly disrupt atomic structures, producing chemical and biological changes. It can also act indirectly through radiolysis of water, thereby generating reactive chemical species that may damage nucleic acids, proteins, and lipids. Together, the direct and indirect effects of radiation initiate a series of biochemical and molecular signaling events that may repair the damage or culminate in permanent physiological changes or cell death. In efforts to gain insight into the mechanisms underlying these effects, we observed a prominent upregulation of the Translationally Controlled Tumor Protein (TCTP) in low dose/low dose rate (137)Cs γ-irradiated cells that was associated with adaptive responses that reduced chromosomal damage to a level lower than what occurs spontaneously...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149411/elusive-role-of-tctp-protein-and-mrna-in-cell-cycle-and-cytoskeleton-regulation
#6
Jacek Z Kubiak, Malgorzata Kloc
Translationally Controlled Tumor-associated Protein (TCTP) is a small, 23 kDa multifunctional and ubiquitous protein localized both in the cytoplasm and in the nucleus of eukaryotic cells. It is evolutionarily highly conserved. Certain aspects of its structure show remarkable similarities to guanine nucleotide-free chaperons Mss4 and Dss4 suggesting that at least some functions of TCTP may depend on its chaperon-like action on other proteins. Besides other functions, TCTP is clearly involved in cell cycle regulation...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149410/tctp-in-neuronal-circuitry-assembly
#7
Cláudio Gouveia Roque, Christine E Holt
Although tctp expression in many areas of the human brain was reported more than 15 years ago, little was known about how it functions in neurons. The early notion that Tctp is primarily expressed in mitotic cells, together with reports suggesting a relative low abundance in the brain, has perhaps potentiated this almost complete disregard for the study of Tctp in the context of neuron biology. However, recent evidence has challenged this view, as a number of independent genome-wide profiling studies identified tctp mRNA among the most enriched in the axonal compartment across diverse neuronal populations, including embryonic retinal ganglion cells...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149409/translationally-controlled-tumor-protein-tctp-hrf-in-animal-venoms
#8
Andrea Senff-Ribeiro
Proteins from TCTP/HRF family were identified as venom toxins of spiders from different genus. We have found a TCTP toxin in the venom gland of Loxosceles intermedia, a venomous spider very common in South Brazil. TCTP from L. intermedia, named LiTCTP, was cloned, produced in a heterologous prokaryotic system, and the recombinant toxin was biochemically characterized. Our results point that LiTCTP is involved in the inflammatory events of Loxocelism, the clinical signs triggered after Loxosceles sp. bite, which include intense inflammatory reaction at the bite site followed by local necrosis...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149408/function-of-translationally-controlled-tumor-protein-in-organ-growth-lessons-from-drosophila-studies
#9
Kwang-Wook Choi, Sung-Tae Hong, Thao Phuong Le
Regulation of cell growth and proliferation is crucial for development and function of organs in all animals. Genetic defects in growth control can lead to developmental disorders and cancers. Translationally controlled tumor protein (TCTP) is a family of evolutionarily conserved proteins implicated in cancer. Recent studies have revealed multiple roles of TCTP in diverse cellular events, but TCTP functions in vivo are poorly understood in vertebrate systems. We have used Drosophila melanogaster, the fruit fly, as a model organism for genetic dissection of Tctp function...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149407/roles-of-the-translationally-controlled-tumor-protein-tctp-in-plant-development
#10
Léo Betsch, Julie Savarin, Mohammed Bendahmane, Judit Szecsi
The Translationally Controlled Tumor Protein (TCTP) is a conserved protein which expression was associated with several biochemical and cellular functions. Loss-of-function mutants are lethal both in animals and in plants, making the identification of its exact role difficult. Recent data using the model plant Arabidopsis thaliana provided the first viable adult knockout for TCTP and helped addressing the biological role of TCTP during organ development and the functional conservation between plants and animals...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149406/role-and-fate-of-tctp-in-protein-degradative-pathways
#11
Michel Vidal
This chapter focuses on published studies specifically concerning TCTP and its involvement in degradation or stabilization of various proteins, and also in its own degradation in different ways. The first part relates to the inhibition of proteasomal degradation of proteins. This can be achieved by masking ubiquitination sites of specific partners, by favoring ubiquitin E3 ligase degradation, or by regulating proteasome activity. The second part addresses the ability of TCTP to favor degradation of specific proteins through proteasome or macroautophagic pathways...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149405/current-understanding-of-the-tctp-interactome
#12
Siting Li, Feng Ge
Evolutionarily conserved and pleiotropic, the translationally controlled tumor protein (TCTP) is a housekeeping protein present in eukaryotic organisms. It plays an important role in regulating many fundamental processes, such as cell proliferation, cell death, immune responses, and apoptosis. As a result of the pioneer work by Adam Telerman and Robert Amson, the critical role of TCTP in tumor reversion was revealed. Moreover, TCTP has emerged as a regulator of cell fate determination and a promising therapeutic target for cancers...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149404/the-translational-controlled-tumour-protein-tctp-biological-functions-and-regulation
#13
Ulrich-Axel Bommer
The Translational Controlled Tumour Protein TCTP (gene symbol TPT1, also called P21, P23, Q23, fortilin or histamine-releasing factor, HRF) is a highly conserved protein present in essentially all eukaryotic organisms and involved in many fundamental cell biological and disease processes. It was first discovered about 35 years ago, and it took an extended period of time for its multiple functions to be revealed, and even today we do not yet fully understand all the details. Having witnessed most of this history, in this chapter, I give a brief overview and review the current knowledge on the structure, biological functions, disease involvements and cellular regulation of this protein...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149403/structure-function-relationship-of-tctp
#14
Beatriz Xoconostle-Cázares, Roberto Ruiz-Medrano
The translationally controlled tumor protein (TCTP) is a small, multifunctional protein found in most, if not all, eukaryotic lineages, involved in a myriad of key regulatory processes. Among these, the control of proliferation and inhibition of cell death, as well as differentiation, are the most important, and it is probable that other responses are derived from the ability of TCTP to influence them in both unicellular and multicellular organisms. In the latter, an additional function for TCTP stems from its capacity to be secreted via a nonclassical pathway and function in a non-cell autonomous (paracrine) manner, thus affecting the responses of neighboring or distant cells to developmental or environmental stimuli (as in the case of serum TCTP/histamine-releasing factor in mammals and phloem TCTP in Arabidopsis)...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149402/structural-insights-into-tctp-and-its-interactions-with-ligands-and-proteins
#15
Nadine Assrir, Florian Malard, Ewen Lescop
The 19-24 kDa Translationally Controlled Tumor Protein (TCTP) is involved in a wide range of molecular interactions with biological and nonbiological partners of various chemical compositions such as proteins, peptides, nucleic acids, carbohydrates, or small molecules. TCTP is therefore an important and versatile binding platform. Many of these protein-protein interactions have been validated, albeit only few received an in-depth structural characterization. In this chapter, we will focus on the structural analysis of TCTP and we will review the available literature regarding its interaction network from a structural perspective...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/29149401/introduction-how-we-encountered-tctp-and-our-purpose-in-studying-it
#16
Adam Telerman, Robert Amson
In this brief introduction, we describe our encounter with TCTP. Back in 2000, we discovered TCTP in two quite different ways: first, we looked at protein partners of TSAP6 and one of them was TCTP. Then, in collaboration with Sidney Brenner, we performed a high-throughput differential screening comparing the parental cancer cells with revertants. The results indicated that TCTP was of the most differentially expressed genes. These two approaches were carried out only months apart. They guided our research and led to the discoveries of drugs that inhibit the function of TCTP...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28813134/preface
#17
Rachel K Miller
No abstract text is available yet for this article.
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28779331/noninheritable-maternal-factors-useful-for-genetic-manipulation-in-mammals
#18
Takayuki Sakurai, Takayuki Shindo, Masahiro Sato
Mammalian early embryogenesis is supported by maternal factors, such as messenger RNA (mRNA) and proteins, produced and accumulated during oogenesis at least up to the stage when zygotic activation commences. These maternal factors are involved in biologically important events such as epigenetic activation, reprogramming, and mitochondrial growth. Most of these maternal mRNAs are degraded by the 2-cell to 4 ~ 8-cell stages. Maternal proteins, which are produced during oogenesis or by the maternal mRNAs, are degraded by the 4 ~ 8-cell stage...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28779330/the-origin-and-evolution-of-maternal-genes
#19
Antonio Marco
Proteins and RNA molecules are deposited into the developing egg by the mother. These gene products will drive the first stages of development and are coded by maternal genes. Maternal genes are essential, yet, despite their importance, their evolutionary dynamics is largely unknown. Here I review the current knowledge of maternal gene evolution. The evolutionary origin of maternal genes tends to be more recent than that of zygotic genes. Some studies support the theoretical prediction that maternal genes evolve faster than zygotic genes...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28779329/parthenogenesis-in-insects-the-centriole-renaissance
#20
Maria Giovanna Riparbelli, Marco Gottardo, Giuliano Callaini
Building a new organism usually requires the contribution of two differently shaped haploid cells, the male and female gametes, each providing its genetic material to restore diploidy of the new born zygote. The successful execution of this process requires defined sequential steps that must be completed in space and time. Otherwise, development fails. Relevant among the earlier steps are pronuclear migration and formation of the first mitotic spindle that promote the mixing of parental chromosomes and the formation of the zygotic nucleus...
2017: Results and Problems in Cell Differentiation
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