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Axel D Becke
The zeroth-order (uncorrelated) singlet-triplet energy difference in single-particle excited configurations is 2Kif, where Kif is the Coulomb self-energy of the product of the transition orbitals. Here we present a non-empirical, virial-theorem argument that the correlated singlet-triplet energy difference should be half of this, namely, Kif. This incredibly simple result gives vertical HOMO-LUMO excitation energies in small-molecule benchmarks as good as the popular TD-B3LYP time-dependent approach to excited states...
January 28, 2018: Journal of Chemical Physics
N Arrighi, K Lypovetska, C Moratal, S Giorgetti-Peraldi, C A Dechesne, C Dani, P Peraldi
The primary cilium is an organelle, present at the cell surface, with various biological functions. We, and others, have shown that it plays a role in the differentiation of adipose progenitors (APs) into adipocytes. APs can also differentiate into myofibroblasts when treated with TGF-β1. Several components of the TGF-β1 pathway are located within the cilium suggesting a function for this organelle in AP myofibrogenesis. We studied differentiation of APs into myofibroblasts in two human models: APs of the adipose tissue (aAPs) and APs resident in the skeletal muscles (mAPs)...
November 10, 2017: Scientific Reports
Kelly Hares, James Scott Miners, Amelia Jane Cook, Claire Rice, Neil Scolding, Seth Love, Alastair Wilkins
Defects in motor protein-mediated neuronal transport mechanisms have been implicated in a number of neurodegenerative disorders but remain relatively little studied in Alzheimer's disease (AD). Our aim in the present study was to assess the expression of the anterograde kinesin superfamily motor proteins KIF5A, KIF1B, and KIF21B, and to examine their relationship to levels of hyperphosphorylated tau, amyloid-β protein precursor (AβPP), and amyloid-β (Aβ) in human brain tissue. We used a combination of qPCR, immunoblotting, and ELISA to perform these analyses in midfrontal cortex from 49 AD and 46 control brains...
October 16, 2017: Journal of Alzheimer's Disease: JAD
A J Lucanus, G W Yip
Breast cancer pathobiology is known to be influenced by the differential expression of a group of proteins called the kinesin superfamily (KIFs), which is instrumental in the intracellular transport of chromosomes along microtubules during mitosis. During cellular division, kinesins are strictly regulated through temporal synthesis so that they are present only when needed. However, their misregulation may contribute to uncontrolled cell growth owing to premature sister chromatid separation, highlighting their importance in cancer...
October 23, 2017: Oncogene
Hefei Ren, Xinyi Yu, Liren Yu, Yinguo Zhang, Hong Xie, Na Shi, Lijun Chen
BACKGROUND Emotional state can be affected by different training loads. The aim of this study was to explore the changes of rat emotional state, as well as the mRNA and protein expressions of N-methyl-D-aspartate receptors (NMDARs), postsynaptic density 95 (PSD-95), and kinesin family member 17 (KIF-17) in the hippocampus, by long-term moderate-intensity and high-intensity training models in rats. MATERIAL AND METHODS The exercise model of SD rats was set up by treadmill running of moderate and high intensities for 4 weeks...
October 17, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Jianliang Chen, Shu Li, Shu Zhou, Shouji Cao, Yun Lou, Haiyuan Shen, Jie Yin, Guoqiang Li
OBJECTIVES: In this study, we characterized the expression of 32 other kinesin superfamily proteins (KIFs) and analyzed their association with the progression and prognosis of hepatocellular carcinoma (HCC). MATERIALS AND METHODS: The data from 295 HCC patients from The Cancer Genome Atlas were included in the study. An independent t-test was used to compare the KIF levels in HCC and adjacent tissues. Pearson's Chi-square test was used to assess the relationships of KIF expression with tumor biomarkers and clinicopathological parameters...
2017: Journal of Cancer Research and Therapeutics
Cristian M Butnaru, Marioara B Chiritoiu, Gabriela N Chiritoiu, Stefana-Maria Petrescu, Andrei-Jose Petrescu
We present here data on EDEM3 network of ER resident interactors and the changes induced upon this network by perturbing the early ER N-glycan processing with mannosidase and glucosidase inhibitors. By coupling immunoprecipitation with mass spectrometry we identified EDEM3 interactors and assigned statistical significance to those most abundant ER-residents that might form functional complexes with EDEM3. We further show that this ER interaction network changes in both content and abundance upon treatment with kifunensine (kif) and N-butyldeoxynojirimycin (NB-DNJ) which suggests that when interfering with the N-glycan processing pathway, the functional complexes involving EDEM3 adapt to maintain the cellular homeostasis...
May 13, 2017: Biochemical and Biophysical Research Communications
Won Hee Jang, Young Joo Jeong, Sun Hee Choi, Sang-Hwa Urm, Dae-Hyun Seog
Kinesin 1 is a member of the kinesin superfamily proteins (KIFs) of microtubule-dependent molecular motor proteins that transport organelles and protein complexes in cells. Kinesin 1 consists of a homo- or hetero-dimer of kinesin heavy chains (KHCs), often, although not always, associated with two kinesin light chains (KLCs). KLCs are non-motor proteins that associate with many different binding proteins and cargoes, but their binding partners have not yet been fully identified. In the present study, a yeast two-hybrid system was used to identify proteins that interact with the tetratricopeptide repeat (TPR) domain of KLC1...
January 2017: Biomedical Reports
Yafang Liu, Ping Zhan, Zejun Zhou, Ze Xing, Suhua Zhu, Chenhui Ma, Qian Li, Qingqing Zhu, Yingying Miao, Jianya Zhang, Tangfeng Lv, Yong Song
BACKGROUND: The kinesin family member C1 (KIFC1, also known as HSET) is a kinesin superfamily protein (KIFs). Although KIFC1 acts as a crucial role in the development of several human cancers, the KIFC1 expression profile and functional remain unclear in non-small cell lung cancer (NSCLC). METHODS: We collected the fresh NSCLC samples and paired normal lung tissue in patients with lung cancer operation, and detected KIFC1 expression using quantitative reverse-transcription polymerase chain reaction (qRT-PCR) and Western blotting...
October 2016: Journal of Thoracic Disease
Mengzhu Chen, Xiuying Liu, Jie Du, Xiu-Jie Wang, Lixin Xia
Lung squamous cell carcinoma (LUSC) and lung adenocarcinoma (LUAD) are the two major subtypes of lung cancer, with LUSC exhibits faster progression rate than LUAD. To investigate the roles of immune-response related genes (IRGs) in lung cancer progression, we used LUAD and LUSC samples at different cancer progression stages, and identified that the expression profiles of IRGs could serve as a better classification marker for cancerous tissues of both LUAD and LUSC. We found that the expression changes of IRGs were different between LUAD and LUSC...
January 3, 2017: Oncotarget
Hao Duan, Xu Zhang, Fei-Xiang Wang, Mu-Yan Cai, Guo-Wei Ma, Hong Yang, Jian-Hua Fu, Zi-Hui Tan, Xia-Yu Fu, Qi-Long Ma, Xin-Ye Wang, Peng Lin
To determine the prognostic significance of Kinesin family member 2C (KIF-2C) expression in patients with operable esophageal squamous cell carcinoma (ESCC), we conducted an immunohistochemical analysis of KIF-2C expression in 415 surgically resected primary tumor tissues and 40 adjacent non-cancerous tissues from patients with operable ESCC. The median duration of postoperative follow-up was 76.0 months. Higher KIF-2C expression was associated with significantly increased risks of higher pathologic tumor (pT) status (P=0...
December 6, 2016: Oncotarget
Wu-Lin Charng, Ender Karaca, Zeynep Coban Akdemir, Tomasz Gambin, Mehmed M Atik, Shen Gu, Jennifer E Posey, Shalini N Jhangiani, Donna M Muzny, Harsha Doddapaneni, Jianhong Hu, Eric Boerwinkle, Richard A Gibbs, Jill A Rosenfeld, Hong Cui, Fan Xia, Kandamurugu Manickam, Yaping Yang, Eissa A Faqeih, Ali Al Asmari, Mohammed A M Saleh, Ayman W El-Hattab, James R Lupski
BACKGROUND: Neurodevelopment is orchestrated by a wide range of genes, and the genetic causes of neurodevelopmental disorders are thus heterogeneous. We applied whole exome sequencing (WES) for molecular diagnosis and in silico analysis to identify novel disease gene candidates in a cohort from Saudi Arabia with primarily Mendelian neurologic diseases. METHODS: We performed WES in 31 mostly consanguineous Arab families and analyzed both single nucleotide and copy number variants (CNVs) from WES data...
July 19, 2016: BMC Medical Genomics
Wen-Chun Liu, Yu-Li Lin, Maureen Spearman, Pei-Yun Cheng, Michael Butler, Suh-Chin Wu
UNLABELLED: Influenza virus hemagglutinin (HA) N-glycans play important regulatory roles in the control of virus virulence, antigenicity, receptor-binding specificity, and viral escape from the immune response. Considered essential for controlling innate and adaptive immune responses against influenza virus infections, dendritic cells (DCs) trigger proinflammatory and adaptive immune responses in hosts. In this study, we engineered Chinese hamster ovary (CHO) cell lines expressing recombinant HA from pandemic H1, H5, and H7 influenza viruses...
July 1, 2016: Journal of Virology
Xue Qiao, Ru Li, Wei Song, Wen-juan Miao, Jia Liu, Hu-biao Chen, De-an Guo, Min Ye
Structural identification of natural products by tandem mass spectrometry requires laborious spectral analysis. Herein, we report a targeted post-acquisition data processing strategy, key ion filtering (KIF), to analyze untargeted mass spectral data. This strategy includes four steps: (1) untargeted data acquisition by ultra-high performance liquid chromatography coupled with hybrid quadrupole orbitrap mass spectrometry (UHPLC/orbitrap-MS); (2) construction of a key ion database according to diagnostic MS/MS fragmentations and conservative substructures of natural compounds; (3) high-resolution key ion filtering of the acquired data to recognize substructures; and (4) structural identification of target compounds by analyzing their MS/MS spectra...
April 8, 2016: Journal of Chromatography. A
Shuijie Li, Stuart M Fell, Olga Surova, Erik Smedler, Karin Wallis, Zhi Xiong Chen, Ulf Hellman, John Inge Johnsen, Tommy Martinsson, Rajappa S Kenchappa, Per Uhlén, Per Kogner, Susanne Schlisio
KIF1Bβ is a candidate 1p36 tumor suppressor that regulates apoptosis in the developing sympathetic nervous system. We found that KIF1Bβ activates the Ca(2+)-dependent phosphatase calcineurin (CN) by stabilizing the CN-calmodulin complex, relieving enzymatic autoinhibition and enabling CN substrate recognition. CN is the key mediator of cellular responses to Ca(2+) signals and its deregulation is implicated in cancer, cardiac, neurodegenerative, and immune disease. We show that KIF1Bβ affects mitochondrial dynamics through CN-dependent dephosphorylation of Dynamin-related protein 1 (DRP1), causing mitochondrial fission and apoptosis...
January 25, 2016: Developmental Cell
J A Hubacek, M Vrablik, D Dlouha, V Stanek, M Gebauerova, V Adamkova, R Ceska, G Dostálová, A Linhart, L Vitek, J Pitha
AIM: Cardiovascular disease (CVD) is a major cause of morbidity and mortality in developed countries. This study aimed to confirm the effect of common putative CVD-associated gene variants (FTO rs17817449, KIF6 rs20455, 9p21 rs10757274 and 2q36.3 rs2943634) on CVD manifestation, and determine whether this effect differs between younger (< 50 years) and older CVD patients. METHODS: 1191 controls and 1889 MI patients were analyzed. All participants were Caucasian Czech males aged <65 years (532 were <50 years) who were examined at cardiology clinics in Prague, Czech Republic...
February 15, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
Abigail U Emelonye, Taina Pitkäaho, Katri Vehviläinen-Julkunen
Background. Measures of spousal effect during parturient pain should take a tripartite approach involving the parturients, spouses, and midwives. Aim. To develop and validate three questionnaires measuring spousal presence in management of parturient pain in Nigeria. Methods. There are two phases: (1) development of questionnaires, Abuja Instrument for Midwives (AIM), Abuja Instrument for Parturient Pain (AIPP), and Abuja Instrument for Parturient Spouses (AIPS), utilizing literatures, Kuopio instrument for fathers (KIF) and expertise of health professionals, and (2) pilot study to validate the questionnaires which were administered in two hospitals in Nigeria: midwives (n = 10), parturients (n = 10), and spouses (n = 10)...
2015: Nursing Research and Practice
Vinod Kumar, Jamal-Eddine Bouameur, Janina Bär, Robert H Rice, Hue-Tran Hornig-Do, Dennis R Roop, Nicole Schwarz, Susanne Brodesser, Sören Thiering, Rudolf E Leube, Rudolf J Wiesner, Preethi Vijayaraj, Christina B Brazel, Sandra Heller, Hans Binder, Henry Löffler-Wirth, Peter Seibel, Thomas M Magin
Keratin intermediate filaments (KIFs) protect the epidermis against mechanical force, support strong adhesion, help barrier formation, and regulate growth. The mechanisms by which type I and II keratins contribute to these functions remain incompletely understood. Here, we report that mice lacking all type I or type II keratins display severe barrier defects and fragile skin, leading to perinatal mortality with full penetrance. Comparative proteomics of cornified envelopes (CEs) from prenatal KtyI(-/-) and KtyII(-/-)(K8) mice demonstrates that absence of KIF causes dysregulation of many CE constituents, including downregulation of desmoglein 1...
December 7, 2015: Journal of Cell Biology
Songyu Chen, Mingzhi Han, Weiliang Chen, Ying He, Bin Huang, Peng Zhao, Qibing Huang, Liang Gao, Xun Qu, Xingang Li
Malignant glioma is notorious for its aggressiveness and poor prognosis, and the invasiveness of glioma cells is the major obstacle. Accumulating evidence indicates that kinesin superfamily proteins (KIFs) may play key roles in tumor invasiveness, but the mechanisms remained unresolved. Our previous study demonstrated that membrane type 1-matrix metalloproteinase (MT1-MMP) was involved in Kinesin family member 1B (KIF1B)-modulated invasion of gastric cancer cells. Therefore, the role of KIF1B in glioma cell invasion and its relationship with MT1-MMP were explored in the present study...
February 2016: Oncology Reports
Li Jiang, Beatrice M Tam, Guoxing Ying, Sen Wu, William W Hauswirth, Jeanne M Frederick, Orson L Moritz, Wolfgang Baehr
In Caenorhabditis elegans, homodimeric [kinesin family (KIF) 17, osmotic avoidance abnormal-3 (OSM-3)] and heterotrimeric (KIF3) kinesin-2 motors are required to establish sensory cilia by intraflagellar transport (IFT) where KIF3 and KIF17 cooperate to build the axoneme core and KIF17 builds the distal segments. However, the function of KIF17 in vertebrates is unresolved. We expressed full-length and motorless KIF17 constructs in mouse rod photoreceptors using adeno-associated virus in Xenopus laevis rod photoreceptors using a transgene and in ciliated IMCD3 cells...
December 2015: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
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