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P73 protein

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https://www.readbyqxmd.com/read/29458146/enhanced-anticancer-effects-of-scutellaria-barbata-d-don-in-combination-with-traditional-chinese-medicine-components-on-non-small-cell-lung-cancer-cells
#1
Qian Wang, Narayan Acharya, Zhongwei Liu, Xianmei Zhou, Meghan Cromie, Jia Zhu, Weimin Gao
ETHNOPHARMACOLOGICAL RELEVANCE: Experience-based herbal medicine as a complementary to modern western medicine has triggered an array of studies in quest of novel anticancer drugs. Scutellaria barbata D. Don (SB) is commonly used to treat different types of cancers, but its molecular mechanism of action is not clearly understood. In this study, we attempted to elucidate the mode of action of a traditional Chinese medicine prescription with a total of 14 components, named Lian-Jia-San-Jie-Fang (LJSJF, in Chinese), where SB works as the "principle" against non-small cell lung cancer (NSCLC) cells...
February 16, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29452959/differential-expressions-of-mdm2-and-tap73-in-cancer-and-cancer-adjacent-tissues-in-patients-with-non-small-cell-lung-carcinoma
#2
B Wang, X Liu, H Liu, J Guo, T Zhang, N Zhou, Y Ma, H Yu, L Chen, Z Ren, K Fan, X Tian
AIM: To investigate the differences in mRNA and protein expressions of MDM2 (mouse double minute 2 homolog) and P73 in cancer and cancer-adjacent tissues in patients with non-small-cell lung carcinoma (NSCLC). MATERIALS AND METHODS: We compared the protein expressions of MDM2 and P73 in lung cancer and cancer-adjacent tissues in NSCLC patients by IHC (immunohistochemistry) and WB (Western blot). We divided the NSCLC patients into two subgroups, adenocarcinoma and squamous carcinoma...
February 13, 2018: Revista Portuguesa de Pneumologia
https://www.readbyqxmd.com/read/29434772/transcription-activated-p73-modulated-cyclin-d1-expression-leads-to-doxorubicin-resistance-in-gastric-cancer
#3
Zhi-Peng Ji, Ling Qiang, Jian-Liang Zhang
Gastric cancer (GC) is one of the leading types of cancer in terms of mortality cases worldwide. Doxorubicin (Dox), a common chemotherapy drug, is frequently used to treat GC; however, acquired resistance to Dox hinders the chemotherapeutic outcome and causes shorter survival in GC patients. Several Dox-resistant GC cell lines, including SGC7901, SNU-1 and SNU-5 were generated to investigate the mechanism of Dox resistance in GC. Various methods were used to test the response of Dox-resistant GC cells and parental cells, including flow cytometry, Cell Counting kit-8 assay, reverse transcription polymerase chain reaction and western blot analysis...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29412778/the-long-noncoding-rna-tp73-as1-interacted-with-mir-124-to-modulate-glioma-growth-by-targeting-inhibitor-of-apoptosis-stimulating-protein-of-p53
#4
Shuai Xiao, Rensheng Wang, Xiangwei Wu, Wen Liu, Shanshan Ma
P73 antisense RNA 1T (non-protein coding), known as TP73-AS1 or PDAM, is a long noncoding RNA (lncRNA), which may regulate apoptosis by regulation of p53-dependent antiapoptotic genes. An abnormal change of TP73-AS1 expression was noticed in cancers. The effects of TP73-AS1 in brain glioma growth and the underlying mechanism remain unclear so far. In this study, the effect of TP73-AS1 in human brain glioma cell lines and clinical tumor samples was detected so as to reveal its role and function. In this study, TP73-AS1 was specifically upregulated in brain glioma cell lines and promoted glioma cell growth through targeting miR-124...
February 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29366442/dna-binding-partners-of-yap-taz
#5
Min-Kyu Kim, Ju-Won Jang, Suk-Chul Bae
Hippo signaling plays critical roles in regulation of tissue homeostasis, organ size, and tumorigenesis by inhibiting YES-associated protein (YAP) and PDZ-binding protein TAZ through MST1/2 and LATS1/2 pathway. It is also engaged in cross-talk with various other signaling pathways, including WNT, BMPs, Notch, GPCRs, and Hedgehog to further modulate activities of YAP/TAZ. Because YAP and TAZ are transcriptional coactivators that lack DNA-binding activity, both proteins must interact with DNA-binding transcription factors to regulate target gene's expression...
January 25, 2018: BMB Reports
https://www.readbyqxmd.com/read/29339502/protein-aggregation-of-the-p63-transcription-factor-underlies-severe-skin-fragility-in-aec-syndrome
#6
Claudia Russo, Christian Osterburg, Anna Sirico, Dario Antonini, Raffaele Ambrosio, Julia Maren Würz, Jörg Rinnenthal, Marco Ferniani, Sebastian Kehrloesser, Birgit Schäfer, Peter Güntert, Satrajit Sinha, Volker Dötsch, Caterina Missero
The p63 gene encodes a master regulator of epidermal commitment, development, and differentiation. Heterozygous mutations in the C-terminal domain of the p63 gene can cause ankyloblepharon-ectodermal defects-cleft lip/palate (AEC) syndrome, a life-threatening disorder characterized by skin fragility and severe, long-lasting skin erosions. Despite deep knowledge of p63 functions, little is known about mechanisms underlying disease pathology and possible treatments. Here, we show that multiple AEC-associated p63 mutations, but not those causative of other diseases, lead to thermodynamic protein destabilization, misfolding, and aggregation, similar to the known p53 gain-of-function mutants found in cancer...
January 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29307398/p53-and-reproduction
#7
REVIEW
Hey-Joo Kang, Zev Rosenwaks
Tumor protein 53 (TP53) and its related family of p63 and p73 are tumor suppressor genes that regulate cellular activity to enhance longevity. p53 binds to specific response elements in DNA, modulating the transcription of genes that govern the major defenses against tumor growth. Additional members of the p53 family are involved with male and female germ cell survival. Although the majority of studies have focused on p53 as a tumor suppressor gene, little is known about its function in normal cellular processes...
January 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29295500/decitabine-and-melphalan-fail-to-reactivate-p73-in-p53-deficient-myeloma-cells
#8
Pierre-Samuel Gillardin, Géraldine Descamps, Sophie Maiga, Benoit Tessoulin, Hanane Djamai, Benedetta Lucani, David Chiron, Philippe Moreau, Steven Le Gouill, Martine Amiot, Catherine Pellat-Deceunynck, Agnès Moreau-Aubry
(1) Background: TP53 deficiency remains a major adverse event in Multiple Myeloma (MM) despite therapeutic progresses. As it is not possible to target TP53 deficiency with pharmacological agents, we explored the possibility of activating another p53 family member, p73, which has not been well studied in myeloma. (2) Methods: Using human myeloma cell lines (HMCLs) with normal or abnormal TP53 status, we assessed TP73 methylation and expression. (3) Results: Using microarray data, we reported that TP73 is weakly expressed in 47 HMCLs and mostly in TP53 wild type (TP53wt) HMCLs (p = 0...
December 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29274472/protein-phosphatase-2ac%C3%AE-gene-knock-out-results-in-cortical-atrophy-through-activating-hippo-cascade-in-neuronal-progenitor-cells
#9
Bo Liu, Li-Hua Sun, Yan-Fei Huang, Li-Jun Guo, Li-Shu Luo
Protein phosphatase 2ACα (PP2ACα), a vital member of the protein phosphatase family, has been studied primarily as a regulator for the development, growth and protein synthesis of a lot of cell types. Dysfunction of PP2ACα protein results in neurodegenerative disease; however, this finding has not been directly confirmed in the mouse model with PP2ACα gene knock-out. Therefore, in this study presented here, we generated the PP2ACα gene knock-out mouse model by the Cre-loxP targeting gene system, with the purpose to directly observe the regulatory role of PP2ACα gene in the development of mouse's cerebral cortex...
December 20, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29260852/targeting-the-prion-like-aggregation-of-mutant-p53-to-combat-cancer
#10
Jerson L Silva, Elio A Cino, Iaci N Soares, Vitor F Ferreira, Guilherme A P de Oliveira
Prion-like behavior of several amyloidogenic proteins has been demonstrated in recent years. Despite having functional roles in some cases, irregular aggregation can have devastating consequences. The most commonly known amyloid diseases are Alzheimer's, Parkinson's, and Transmissible Spongiform Encephalopathies (TSEs). The pathophysiology of prion-like diseases involves the structural transformation of wild-type (wt) proteins to transmissible forms that can convert healthy proteins, generating aggregates. The mutant form of tumor suppressor protein, p53, has recently been shown to exhibit prion-like properties...
December 20, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29228353/the-roles-of-p53-and-its-family-proteins-p63-and-p73-in-the-dna-damage-stress-response-in-organogenesis-stage-mouse-embryos
#11
Nazem El Husseini, Barbara F Hales
Members of the P53 transcription factor family, P53, P63 and P73, play important roles in normal development and in regulating the expression of genes that control apoptosis and cell cycle progression in response to genotoxic stress. P53 is involved in the DNA damage response pathway that is activated by hydroxyurea in organogenesis-stage murine embryos. The extent to which P63 and P73 contribute to this stress response is not known. To address this question, we examined the roles of P53, P63 and P73 in mediating the response of Trp53-positive and Trp53-deficient murine embryos to a single dose of hydroxyurea (400 mg/kg) on gestational day 9...
December 7, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29156626/surface-plasmon-resonance-sensing-of-biorecognition-interactions-within-the-tumor-suppressor-p53-network
#12
REVIEW
Ilaria Moscetti, Salvatore Cannistraro, Anna Rita Bizzarri
Surface Plasmon Resonance (SPR) is a powerful technique to study the kinetics of biomolecules undergoing biorecognition processes, particularly suited for protein-protein interactions of biomedical interest. The potentiality of SPR was exploited to sense the interactions occurring within the network of the tumor suppressor p53, which is crucial for maintaining genome integrity and whose function is inactivated, mainly by down regulation or by mutation, in the majority of human tumors. This study includes p53 down-regulators, p53 mutants and also the p53 family members, p63 and p73, which could vicariate p53 protective function...
November 20, 2017: Sensors
https://www.readbyqxmd.com/read/29151191/silica-nanoparticle-exposure-inducing-granulosa-cell-apoptosis-and-follicular-atresia-in-female-balb-c-mice
#13
Jianhui Liu, Man Yang, Li Jing, Lihua Ren, Jialiu Wei, Jin Zhang, Feng Zhang, Junchao Duan, Xianqing Zhou, Zhiwei Sun
Given that the effects of ultrafine fractions (< 0.1 μm) on reproductive diseases are gaining attention, this study aimed to explore the influence of silica nanoparticle (SiNP)-induced female reproductive dysfunction. In this study, 80 female mice were randomly divided into four groups including a control group and three concentrations of SiNP groups (7, 21, 35 mg/kg). Mice were exposed to the vehicle control and silica nanoparticles by tracheal perfusion every 3 days a total of five times in 15 days...
November 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29100427/aberrant-rhythmic-expression-of-cryptochrome2-regulates-the-radiosensitivity-of-rat-gliomas
#14
Wang Fan, Li Caiyan, Zhu Ling, Zhao Jiayun
In this study, we investigated the role of the clock regulatory protein cryptochrome 2 (Cry2) in determining the radiosensitivity of C6 glioma cells in a rat model. We observed that Cry2 mRNA and protein levels showed aberrant rhythmic periodicity of 8 h in glioma tissues, compared to 24 h in normal brain tissue. Cry2 mRNA and protein levels did not respond to irradiation in normal tissues, but both were increased at the ZT4 (low Cry2) and ZT8 (high Cry2) time points in gliomas. Immunohistochemical staining of PCNA and TUNEL assays demonstrated that high Cry2 expression in glioma tissues was associated with increased cell proliferation and decreased apoptosis...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29065514/the-role-of-mdm2-in-promoting-genome-stability-versus-instability
#15
REVIEW
M Reza Saadatzadeh, Adily N Elmi, Pankita H Pandya, Khadijeh Bijangi-Vishehsaraei, Jixin Ding, Christopher W Stamatkin, Aaron A Cohen-Gadol, Karen E Pollok
In cancer, the mouse double minute 2 (MDM2) is an oncoprotein that contributes to the promotion of cell growth, survival, invasion, and therapeutic resistance. The impact of MDM2 on cell survival versus cell death is complex and dependent on levels of MDM2 isoforms, p53 status, and cellular context. Extensive investigations have demonstrated that MDM2 protein-protein interactions with p53 and other p53 family members (p63 and p73) block their ability to function as transcription factors that regulate cell growth and survival...
October 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29061667/novel-yap1-activator-identified-by-transcription-based-functional-screen-limits-multiple-myeloma-growth
#16
Junichi Maruyama, Kazutoshi Inami, Fumiyoshi Michishita, Xinliang Jiang, Hiroaki Iwasa, Kentaro Nakagawa, Mari Ishigami-Yuasa, Hiroyuki Kagechika, Norio Miyamura, Jun Hirayama, Hiroshi Nishina, Daichi Nogawa, Kouhei Yamamoto, Yutaka Hata
Yes-associated protein 1 (YAP1) interacts with numerous transcription factors, including TEA-domain family proteins (TEAD) and p73. YAP1 is negatively regulated by the tumor suppressor Hippo pathway. In human cancers, the deregulation of the Hippo pathway and YAP1 gene amplification lead to the activation of YAP1, which induces epithelial-mesenchymal transition (EMT) and drug resistance. YAP1 inhibitors are expected to be useful in cancer therapy. On the other hand, in certain cancers, YAP1 upregulates p73-dependent gene transcription and behaves as a tumor suppressor...
October 23, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/29058783/from-mutational-inactivation-to-aberrant-gain-of-function-unraveling-the-structural-basis-of-mutant-p53-oncogenic-transition
#17
Fisayo A Olotu, Mahmoud E S Soliman
Various evidence has revealed that mutations in p53 exert activities that go beyond simply inactivation of wildtype functions but rather elicits downstream interactions that promote malignancy described as mutant p53 gain-of-function (GOF). Here we report the first account of the dynamics of mutation-induced structural transition of native p53 to an aberrant gain-of-function state, studying the wildtype (WT) and high incidence contact (R273C) and structural (R175H) mutant p53 (mutp53) through molecular dynamics simulation...
October 23, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29048685/mir-504-promotes-tumour-growth-and-metastasis-in-human-osteosarcoma-by-targeting-tp53inp1
#18
Qingchun Cai, Sixiang Zeng, Xing Dai, Junlong Wu, Wei Ma
An increasing number of studies have demonstrated that microRNAs participate in the development of osteosarcoma by acting as tumour suppressor or tumour-promoting genes. We investigated the role of miR-504 in the growth and metastasis of osteosarcoma. The expression of miR-504 in clinical osteosarcoma samples was higher than that in the adjacent normal tissue and correlated with tumour size and clinical stage. Tumour protein p53-inducible nuclear protein 1 (TP53INP1) was downregulated in the clinical osteosarcoma samples compared with the adjacent normal tissues and was consistently correlated with the clinical stage...
September 21, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29030916/identification-and-characterization-of-a-metastatic-suppressor-brms1l-as-a-target-gene-of-p53
#19
Ryota Koyama, Miyuki Tamura, Takafumi Nakagaki, Tomoko Ohashi, Masashi Idogawa, Hiromu Suzuki, Takashi Tokino, Yasushi Sasaki
The tumor suppressor p53 and its family members, p63 and p73, play a pivotal role in the cell fate determination in response to diverse upstream signals. As transcription factors, p53 family proteins regulate a number of genes that are involved in cell-cycle arrest, apoptosis, senescence, and maintenance of genomic stability. Recent studies revealed that p53 family proteins are important for the regulation of cell invasion and migration. Microarray analysis showed that breast cancer metastasis-suppressor 1- like (BRMS1L) is upregulated by p53 family proteins, specifically p53, TAp63γ, and TAp73β...
October 13, 2017: Cancer Science
https://www.readbyqxmd.com/read/29024157/regulation-of-nonylphenol-induced-reproductive-toxicity-in-mouse-spermatogonia-cells-by-mir-361-3p
#20
Liyan Tang, Bo Zhao, Hui Zhang, Qiao Du, Jiang Zhu, Zhijiang Zhao, Ce Chen, Cheng Luo, Qiyuan Kang, Wenbing Yuan, Shaohua Bian, Hang Bi, Huimin Sun, Yingyi Li
Nonylphenol (NP) is an environmental chemical that affects apoptosis and male infertility. In our study, we found that a high concentration of NP could down-regulate the expression of microRNA-361-3p (miR-361-3p) in the murine GC-1 spermatogonia cell line and in vivo in murine spermatogonia. Additionally, one direct target of this miR, the 3' untranslated region of Killin (Klln) mRNA, was identified. Klln encodes a transcription factor that directly regulates the expression of Tp73 (transcriptionally active p73), whose encoded protein can up-regulate the expression of Puma (P53 upregulated modulator of apoptosis)...
October 12, 2017: Molecular Reproduction and Development
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