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Tissue specific protein interactions

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https://www.readbyqxmd.com/read/28339613/a-nonsense-mutation-in-ccdc62-gene-is-responsible-for-spermiogenesis-defects-and-male-infertility-in-repro29-repro29-mice%C3%A2
#1
Yuchi Li, Cailing Li, Shouren Lin, Bo Yang, Weiren Huang, Hanwei Wu, Yuanbin Chen, Lihua Yang, Manling Luo, Huan Guo, Jianbo Chen, Tiantian Wang, Qian Ma, Yanli Gu, Lisha Mou, Zhimao Jiang, Jun Xia, Yaoting Gui
Phenotype-driven mutagenesis is an unbiased method to identify novel genes involved in spermatogenesis and other reproductive processes. Male repro29/repro29 mice generated by the Reproductive Genomics Program at the Jackson Laboratory were infertile with deformed sperm and poor motility. Using selected exonic capture and massively parallel sequencing technologies, we identified a nonsense mutation in the exon 6 of coiled-coil domain-containing 62 gene (Ccdc62), which results in a formation of a premature stop codon and a truncated protein...
January 28, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28337254/amp-activated-protein-kinase-and-energy-balance-in-breast-cancer
#2
REVIEW
Hong Zhao, Yelda C Orhan, Xiaoming Zha, Ecem Esencan, Robert T Chatterton, Serdar E Bulun
Cancer growth and metastasis depends on the availability of energy. Energy-sensing systems are critical in maintaining a balance between the energy supply and utilization of energy for tumor growth. A central regulator in this process is AMP-activated protein kinase (AMPK). In times of energy deficit, AMPK is allosterically modified by the binding of increased levels of AMP and ADP, making it a target of specific AMPK kinases (AMPKKs). AMPK signaling prompts cells to produce energy at the expense of growth and motility, opposing the actions of insulin and growth factors...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28332091/significance-of-mnk1-in-prognostic-prediction-and-chemotherapy-development-of-epithelial-ovarian-cancer
#3
S Hou, P Du, P Wang, C Wang, P Liu, H Liu
BACKGROUND: Ovarian cancer is the most lethal gynecologic malignancy worldwide with surgery as the only curative treatment. Long-term overall survival (OS) of ovarian cancer is far from satisfactory, even though significant improvement has been made in post-operative chemotherapy. One of the most important death cause is the chemoresistance due to consecutive chemotherapy. Therefore, understanding the molecular mechanisms involved in ovarian cancer development and identification of novel therapeutic targets are urgently required...
March 22, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28327460/comprehensive-proteomic-characterization-of-stem-cell-derived-extracellular-matrices
#4
Héloïse Ragelle, Alexandra Naba, Benjamin L Larson, Fangheng Zhou, Miralem Prijić, Charles A Whittaker, Amanda Del Rosario, Robert Langer, Richard O Hynes, Daniel G Anderson
In the stem-cell niche, the extracellular matrix (ECM) serves as a structural support that additionally provides stem cells with signals that contribute to the regulation of stem-cell function, via reciprocal interactions between cells and components of the ECM. Recently, cell-derived ECMs have emerged as in vitro cell culture substrates to better recapitulate the native stem-cell microenvironment outside the body. Significant changes in cell number, morphology and function have been observed when mesenchymal stem cells (MSC) were cultured on ECM substrates as compared to standard tissue-culture polystyrene (TCPS)...
March 7, 2017: Biomaterials
https://www.readbyqxmd.com/read/28322931/the-alternatively-spliced-lrrfip1-isoform-1-is-a-key-regulator-of-the-wnt-%C3%AE-catenin-transcription-pathway
#5
Pauline Labbé, Emilie Faure, Simon Lecointe, Solena Le Scouarnec, Florence Kyndt, Marie Marrec, Thierry Le Tourneau, Bernard Offmann, Cécile Duplaà, Stéphane Zaffran, Jean Jacques Schott, Jean Merot
The GC-rich Binding Factor 2/Leucine Rich Repeat in the Flightless 1 Interaction Protein 1 gene (GCF2/LRRFIP1) is predicted to be alternatively spliced in five different isoforms. Although important peptide sequence differences are expected to result from this alternative splicing, to date, only the gene transcription regulator properties of LRRFIP1-Iso5 were unveiled. Based on molecular, cellular and biochemical data, we show here that the five isoforms define two molecular entities with different expression profiles in human tissues, subcellular localizations, oligomerization properties and transcription enhancer properties of the canonical Wnt pathway...
March 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28320293/regulatory-peptides-in-plants
#6
REVIEW
B F Vanyushin, V V Ashapkin, N I Aleksandrushkina
Many different peptides regulating cell differentiation, growth, and development are found in plants. Peptides participate in regulation of plant ontogenesis starting from pollination, pollen tube growth, and the very early stages of embryogenesis, including formation of embryo and endosperm. They direct differentiation of meristematic stem cells, formation of tissues and individual organs, take part in regulation of aging, fruit maturation, and abscission of plant parts associated with apoptosis. Biological activity of peptides is observed at very low concentrations, and it has mainly signal nature and hormonal character...
February 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28320264/molecular-mechanisms-of-neuroplasticity-an-expanding-universe
#7
REVIEW
N V Gulyaeva
Biochemical processes in synapses and other neuronal compartments underlie neuroplasticity (functional and structural alterations in the brain enabling adaptation to the environment, learning, memory, as well as rehabilitation after brain injury). This basic molecular level of brain plasticity covers numerous specific proteins (enzymes, receptors, structural proteins, etc.) participating in many coordinated and interacting signal and metabolic processes, their modulation forming a molecular basis for brain plasticity...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28315294/neuronal-cell-sheet-of-cortical-motor-neuron-phenotype-derived-from-human-ips-cells
#8
Noboru Suzuki, Nagisa Arimitsu, Jun Shimizu, Kenji Takai, Chieko Hirotsu, Erika Takada, Yuji Ueda, Sueshige Wakisaka, Naruyoshi Fujiwara, Tomoko Suzuki
<p>Transplantation of stem cells which differentiate into more mature neural cells brings about functional improvement in pre-clinical studies of stroke. Previous transplant approaches in diseased brain have utilized injection of the cells in a cell suspension. In addition, neural stem cells were preferentially used as graft. However, these cells had no specific relationship to the damaged tissue of stroke patients and brain injury. The injection of cells in a suspension destroyed the cell-cell interactions that are suggested to be important for promoting functional integrity as cortical motor neurons...
March 17, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28314937/phylogenetic-analysis-of-idd-gene-family-and-characterization-of-its-expression-in-response-to-flower-induction-in-malus
#9
Sheng Fan, Dong Zhang, Libo Xing, Siyan Qi, Lisha Du, Haiqin Wu, Hongxia Shao, Youmei Li, Juanjuan Ma, Mingyu Han
Although INDETERMINATE DOMAIN (IDD) genes encoding specific plant transcription factors have important roles in plant growth and development, little is known about apple IDD (MdIDD) genes and their potential functions in the flower induction. In this study, we identified 20 putative IDD genes in apple and named them according to their chromosomal locations. All identified MdIDD genes shared a conserved IDD domain. A phylogenetic analysis separated MdIDDs and other plant IDD genes into four groups. Bioinformatic analysis of chemical characteristics, gene structure, and prediction of protein-protein interactions demonstrated the functional and structural diversity of MdIDD genes...
March 17, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28303499/pregnane-x-receptor-not-nuclear-factor-kappa-b-up-regulates-p-glycoprotein-expression-in-the-brain-of-chronic-epileptic-rats-induced-by-kainic-acid
#10
Nian Yu, Yan-Fang Zhang, Kang Zhang, Yong-Fei Cheng, Hai-Yan Ma, Qing Di
Drug-resistance epilepsy (DRE) is attributed to the brain P-glycoprotein (P-gp) overexpression. We previously reported that nuclear factor-kappa B (NF-κB) played a critical role in regulating P-gp expression at the brain of the acute seizure rats. This study was extended further to investigate the interaction effect of NF-κB and pregnane X receptor (PXR) on P-gp expression at the brain of chronic epileptic rats treated with carbamazepine (CBZ). The chronic epileptic models were induced by the micro-injection of kainic acid (KA) into rats' hippocampus...
March 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28302163/matrix-metalloproteinase-activity-stimulates-n-cadherin-shedding-and-the-soluble-n-cadherin-ectodomain-promotes-classical-microglial-activation
#11
Katherine Conant, Stefano Daniele, P Lorenzo Bozzelli, Tsion Abdi, Amanda Edwards, Arek Szklarczyk, India Olchefske, David Ottenheimer, Kathleen Maguire-Zeiss
BACKGROUND: Matrix metalloproteinases (MMPs) are a family of enzymes that are typically released from intracellular stores to act on specific extracellular substrates. MMP expression and activity can be increased in a neuronal activity-dependent manner, and further increased in response to tissue injury. MMP substrates include cell adhesion molecules (CAMs) that are abundantly expressed in the brain and well positioned for membrane proximal cleavage. Importantly, CAM integrity is important to synaptic structure and axon-myelin interactions, and shed ectodomains may themselves influence cellular function...
March 17, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28300205/one-step-generation-of-mice-carrying-a-conditional-allele-together-with-an-ha-tag-insertion-for-the-delta-opioid-receptor
#12
Dongru Su, Min Wang, Chenli Ye, Jiahui Fang, Yanhui Duan, Zhenghong Zhang, Qiuhong Hua, Changjie Shi, Lihong Zhang, Ru Zhang, Xin Xie
G protein-coupled receptors (GPCRs) are important modulators of many physiological functions and excellent drug targets for many diseases. However, to study the functions of endogenous GPCRs is still a challenging task, partially due to the low expression level of GPCRs and the lack of highly potent and selective GPCR antibodies. Overexpression or knock-in of tagged GPCRs, or knockout of specific GPCRs in mice, are common strategies used to study the in vivo functions of these receptors. However, generating separate mice carrying tagged GPCRs or conditional alleles for GPCRs is labor intensive, and requires additional breeding costs...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28299802/bmp-and-notch-interaction-in-crc-subtypes
#13
Shazia Irshad, Mukesh Bansal, Paolo Guarnieri, Hayley Davis, Ayman Al Haj Zen, Brygida Baran, Claudia Maria Assunta Pinna, Haseeb Rahman, Sujata Biswas, Chiara Bardella, Rosemary Jeffery, Lai Mun Wang, James Edward East, Annabelle Lewis, Ian Tomlinson, Simon John Leedham
The functional role of Bone Morphogenetic Protein (BMP) signalling in colorectal cancer (CRC) is poorly defined, with contradictory results in cancer cell line models reflecting the inherent difficulties of assessing a signalling pathway that is context dependent and subject to genetic constraints. By assessing the transcriptional response of a diploid human colonic epithelial cell line to BMP ligand stimulation we generated a prognostic BMP signalling signature, which was applied to multiple CRC datasets to investigate BMP heterogeneity across CRC molecular subtypes...
March 15, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28299665/roles-of-runx-in-solid-tumors
#14
Linda Shyue Huey Chuang, Kosei Ito, Yoshiaki Ito
All RUNX genes have been implicated in the development of solid tumors, but the role each RUNX gene plays in the different tumor types is complicated by multiple interactions with major signaling pathways and tumor heterogeneity. Moreover, for a given tissue type, the specific role of each RUNX protein is distinct at different stages of differentiation. A regulatory function for RUNX in tissue stem cells points sharply to a causal effect in tumorigenesis. Understanding how RUNX dysregulation in cancer impinges on normal biological processes is important for identifying the molecular mechanisms that lead to malignancy...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28299649/covalent-modifications-of-runx-proteins-structure-affects-function
#15
Ezra Blumenthal, Sarah Greenblatt, Guang Huang, Koji Ando, Ye Xu, Stephen D Nimer
The RUNX family of transcription factors plays important roles in tissue-specific gene expression. Many of their functions depend on specific post-translational modifications (PTMs), and in this review, we describe how PTMs govern RUNX DNA binding, transcriptional activity, protein stability, cellular localization, and protein-protein interactions. We also report how these processes can be disrupted in disease settings. Finally, we describe how alterations of RUNX1, or the enzymes that catalyze its post-translational modifications, contribute to hematopoietic malignancies...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28298520/tissue-specific-ubiquitination-by-ipa1-interacting-protein-1-modulates-ipa1-protein-levels-to-regulate-plant-architecture-in-rice
#16
Jing Wang, Hong Yu, Guosheng Xiong, Zefu Lu, Yongqing Jiao, Xiangbing Meng, Guifu Liu, Xuewei Chen, Yonghong Wang, Jiayang Li
Plant architecture, a collection of genetically controlled agronomic traits, is one of the decisive factors that determine grain production. IDEAL PLANT ARCHITECTURE 1 (IPA1) encodes a key transcription factor having pleiotropic effects on regulating plant architecture in rice (Oryza sativa), and IPA1 expression is controlled at the post-transcriptional level by microRNA156 and microRNA529. Here, we report the identification and characterization of IPA1 INTERACTING PROTEIN 1 (IPI1), a RING-finger E3 ligase that can interact with IPA1 in the nucleus...
March 14, 2017: Plant Cell
https://www.readbyqxmd.com/read/28298306/il-1%C3%AE-induces-nf-%C3%AE%C2%BAb-and-upregulates-microrna-372-to-inhibit-spinal-cord-injury-recovery
#17
Wei Zhou, Tongzhou Yuan, Youshui Gao, Peipei Yin, Wei Liu, Chenhao Pan, Yingjie Liu, Xiaowei Yu
Excessive inflammation including IL-1β-initiated signaling is among the earlies reactions that can cause neuronal damage following spinal cord injury (SCI). It has been suggested that microRNAs may participate in stem cell repair to facilitate functional recovery after SCI. Here we showed that in cultured human neural stem cells (hNSC) IL-1β reduced the expressions of both KIF3B (kinesin family member 3B) and NOSIP (nitric oxide synthase interacting protein), two key modulators for restricting inflammation and promoting neuronal regeneration...
March 15, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28297670/lin28-zinc-knuckle-domain-is-required-and-sufficient-to-induce-let-7-oligouridylation
#18
Longfei Wang, Yunsun Nam, Anna K Lee, Chunxiao Yu, Kira Roth, Casandra Chen, Elizabeth M Ransey, Piotr Sliz
LIN28 is an RNA binding protein that plays crucial roles in pluripotency, glucose metabolism, tissue regeneration, and tumorigenesis. LIN28 binds to the let-7 primary and precursor microRNAs through bipartite recognition and induces degradation of let-7 precursors (pre-let-7) by promoting oligouridylation by terminal uridylyltransferases (TUTases). Here, we report that the zinc knuckle domain (ZKD) of mouse LIN28 recruits TUT4 to initiate the oligouridylation of let-7 precursors. Our crystal structure of human LIN28 in complex with a fragment of pre-let-7f-1 determined to 2...
March 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/28296270/analogues-of-dehydroacetic-acid-as-selective-and-potent-agonists-of-an-ectopic-odorant-receptor-through-a-combination-of-hydrophilic-and-hydrophobic-interactions
#19
Bernie Byunghoon Park, NaHye Lee, YunHye Kim, YoonGyu Jae, Seunghyun Choi, NaNa Kang, Yu Ri Hong, Kiwon Ok, Jeonghee Cho, Young Ho Jeon, Eun Hee Lee, Youngjoo Byun, JaeHyung Koo
Identification of potent agonists of odorant receptors (ORs), a major class of G protein-coupled receptors, remains challenging due to complex receptor-ligand interactions. ORs are present in both olfactory and non-chemosensory tissues, indicating roles beyond odor detection that may include modulating physiological functions in non-olfactory tissues. Selective and potent agonists specific for particular ORs can be used to investigate physiological functions of ORs in non-chemosensory tissues. In this study, we designed and synthesized novel synthetic dehydroacetic acid analogues as agonists of odorant receptor 895 (Olfr895) expressed in bladder...
March 15, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28295592/knockdown-of-long-non-coding-rna-zfas1-protects-cardiomyocytes-against-acute-myocardial-infarction-via-anti-apoptosis-by-regulating-mir-150-crp
#20
Tao Wu, Dan Wu, Qinghua Wu, Bing Zou, Xiao Huang, Xiaoshu Cheng, Yanqing Wu, Kui Hong, Ping Li, Renqiang Yang, Yunde Li, Yingzhang Cheng
BACKGROUND: ZFAS1 is one of cardiac-specific or cardiac-related lncRNAs. This study was to explore the functional involvement of ZFAS1 and its regulatory role in AMI. METHODS: In this study, the models of AMI rat and myocardial cell cultured under hypoxia were made. The expression of ZFAS1 and miR-150 of myocardial infarction tissue or cardiac myocytes was determined by quantitative real time PCR. The regulatory role of ZFAS1 on miR-150 was examined by RNA pull down assay...
March 10, 2017: Journal of Cellular Biochemistry
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