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skin neoplasms/proline
Veza se sprema u međuspremnik
Stranica 1 iz 22 rezultatima
[Non-melanoma skin cancers and human papillomavirus].
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Ultraviolet radiation (UV) is considered as a key environmental risk factor of non-melanoma skin cancer (NMSC), but other factors such as immunological status, genetic predisposition and infection by human papillomavirus (HPV) may also be involved. Although there is overwhelming epidemiological and
p53 codon 72 polymorphism and human papillomavirus associated skin cancer.
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OBJECTIVE
Non-melanoma skin cancers frequently harbour multiple human papillomavirus (HPV) types. A recent report suggests that a polymorphism of the p53 tumour suppressor gene that results in the substitution of a proline residue with an arginine residue at position 72 of the p53 protein might act
p53 codon 72 polymorphism, DNA damage and repair, and risk of non-melanoma skin cancer.
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A very common polymorphism of p53, that of codon 72, codes either for a proline (P72) or an arginine (R72). The two alleles differ in their biological properties: P72 is a stronger inducer of p21, while R72 induces 5-10 times more apoptosis. It is not known, however, whether this polymorphism
The role of TP53 and MDM2 polymorphisms in TP53 mutagenesis and risk of non-melanoma skin cancer.
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P53 is a key regulatory molecule in the cellular response to ultraviolet radiation, and TP53 mutation is the most common alteration in non-melanoma skin cancer. The MDM2 oncogene negatively regulates p53 protein levels, and both genes have functional polymorphisms that may modify skin cancer risk.
Overexpression of PRAS40(T246A) in the Proliferative Compartment Suppresses mTORC1 Signaling, Keratinocyte Migration, and Skin Tumor Development.
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The proline-rich Akt (v-akt murine thymoma viral oncogene homolog 1) substrate of 40 kDa (PRAS40), an inhibitory component of the mTORC1 complex, was identified as an Akt substrate through phosphorylation at Thr246. Phosphorylation at this site releases PRAS40 from the mammalian/mechanistic target
p53 gene mutations in skin cancers with underlying disorders.
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Mutations in p53, a tumor suppressor gene, are one of the most common genetic lesions of human cancers. The relationship between p53 gene mutation and ultraviolet (UV) light has been demonstrated in skin cancers of sun-exposed sites. In this study, genomic DNA from 12 skin cancers was screened for
Relationship between p53 codon 72 polymorphism and susceptibility to sunburn and skin cancer.
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Upregulation of p53 protein induces either growth arrest or apoptosis in response to cellular injury This is signaled from a highly conserved p53 domain between codons 64 and 92, where a functional polymorphism results in either a proline (p53-72P) or an arginine (p53-72R) at codon 72. Preliminary
Frequent downregulation of DMBT1 and galectin-3 in epithelial skin cancer.
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DMBT1 and galectin-3 are potential interacting proteins with presumably complex roles in tumorigenesis. While at present a variety of mechanisms are discussed for DMBT1 and its participation in cancer, galectin-3 is commonly known to exert tumor-promoting effects. However, in vitro studies in a
In vivo and in vitro antitumor effect of ascorbic acid, lysine, proline and green tea extract on human melanoma cell line A2058.
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BACKGROUND
Melanoma, a very serious form of skin cancer, causes the most skin cancer-related deaths, due to metastasis. Structural changes in the extracellular matrix (ECM) are necessary for cell migration during tissue remodeling. MMPs, VEGF, Ki-67 (proliferative protein) and constituents of ECM
P53 codon 72 polymorphism as a risk factor in the development of HPV-associated non-melanoma skin cancers in immunocompetent hosts.
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Human papilloma virus (HPV) has been implicated in skin cancer. Also, in human populations, the p53 gene is polymorphic at amino acid 72 of the protein that it encodes. The association between p53 polymorphisms and HPV-associated skin cancer risk has been examined, but the results were conflicting.
The effect of acute and chronic photodamage on gene expression in human keratinocytes.
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We identified genes involved in the normal response to acute UV damage, as they were modulated in cultured newborn keratinocytes by a single sublethal UV dose, appropriately filtered to mimic solar radiation. Their gene products encode proteins involved in the regulation of cell growth
Threonine 454 phosphorylation in Grainyhead-like 3 is important for its function and regulation by the p38 MAPK pathway.
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The mammalian Grainyhead-like 3 (GRHL3) transcription factor is essential for epithelial development and plays a protective role against squamous cell carcinoma of the skin and of the oral cavity. A single nucleotide polymorphism (SNP) in GRHL3, rs141193530 (p.P455A), is associated with non-melanoma
Cell cycle-dependent phosphorylation of C/EBPbeta mediates oncogenic cooperativity between C/EBPbeta and H-RasV12.
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CCAAT/enhancer binding protein beta (C/EBPbeta) is a widely expressed transcription factor whose activity is regulated by oncogenic Ha-RasV12 signaling. C/EBPbeta is essential for the development of mouse skin tumors containing Ras mutations and can cooperate with RasV12 to transform NIH 3T3 cells.
Interaction between p53 codon 72 polymorphism and melanocortin 1 receptor variants on suntan response and cutaneous melanoma risk.
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BACKGROUND
Ultraviolet (UV) radiation-induced p53 activation promotes cutaneous pigmentation by increasing transcriptional activity of pro-opiomelanocortin (POMC) in the skin. Induction of POMC/alpha-melanocyte-stimulating hormone (alpha-MSH) activates the melanocortin 1 receptor (MC1R), resulting
Ubiquitin/proteasome pathway regulates levels of retinoic acid receptor gamma and retinoid X receptor alpha in human keratinocytes.
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Repeated exposure of human skin to solar UV radiation leads to premature aging (photoaging) and skin cancer. UV-induced skin damage can be ameliorated by all-trans retinoic acid treatment. The actions of retinoic acid in skin keratinocytes are mediated primarily by nuclear retinoic acid receptor
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