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https://www.readbyqxmd.com/read/29868839/an-in-silico-proteomics-screen-to-predict-and-prioritize-protein-protein-interactions-dependent-on-post-translationally-modified-motifs
#1
Anna M Schmoker, Heather E Driscoll, Stefanie R Geiger, James J Vincent, Alicia M Ebert, Bryan A Ballif
Motivation: The development of proteomic methods for the characterization of domain/motif interactions has greatly expanded our understanding of signal transduction. However, proteomics-based binding screens have limitations including that the queried tissue or cell type may not harbor all potential interacting partners or post-translational modifications (PTMs) required for the interaction. Therefore, we sought a generalizable, complementary in silico approach to identify potentially novel motif and PTM-dependent binding partners of high priority...
June 1, 2018: Bioinformatics
https://www.readbyqxmd.com/read/29719934/pretreatment-evaluation-of-fluorescence-resonance-energy-transfer-based-drug-sensitivity-test-for-patients-with-chronic-myelogenous-leukemia-treated-with-dasatinib
#2
Takeshi Kondo, Mari Fujioka, Masumi Tsuda, Kazunori Murai, Kohei Yamaguchi, Takuto Miyagishima, Motohiro Shindo, Takahiro Nagashima, Kentaro Wakasa, Nozomu Fujimoto, Satoshi Yamamoto, Masakatsu Yonezumi, Souichi Saito, Shinji Sato, Kazuei Ogawa, Takaaki Chou, Reiko Watanabe, Yuichi Kato, Shuichiro Takahashi, Yoshiaki Okano, Joji Yamamoto, Masatsugu Ohta, Hiroaki Iijima, Koji Oba, Satoshi Kishino, Junichi Sakamoto, Yoji Ishida, Yusuke Ohba, Takanori Teshima
Tyrosine kinase inhibitors (TKI) are used for primary therapy in patients with newly diagnosed CML. However, a reliable method for optimal selection of a TKI from the viewpoint of drug sensitivity of CML cells has not been established. We have developed a FRET-based drug sensitivity test in which a CrkL-derived fluorescent biosensor efficiently quantifies the kinase activity of BCR-ABL of living cells and sensitively evaluates the inhibitory activity of a TKI against BCR-ABL. Here, we validated the utility of the FRET-based drug sensitivity test carried out at diagnosis for predicting the molecular efficacy...
May 2, 2018: Cancer Science
https://www.readbyqxmd.com/read/29618525/crk-adaptor-proteins-regulate-nk-cell-expansion-and-differentiation-during-mouse-cytomegalovirus-infection
#3
Tsukasa Nabekura, Zhiying Chen, Casey Schroeder, Taeju Park, Eric Vivier, Lewis L Lanier, Dongfang Liu
Natural killer cells are critical in the immune response to infection and malignancy. Prior studies have demonstrated that Crk family proteins can influence cell apoptosis, proliferation, and cell transformation. In this study, we investigated the role of Crk family proteins in mouse NK cell differentiation and host defense using a mouse CMV infection model. The number of NK cells, maturational state, and the majority of the NKR repertoire was similar in Crk x Crk-like (CrkL)-double-deficient and wild type NK cells...
May 15, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29581031/il-7-induced-phosphorylation-of-the-adaptor-crk-like-and-other-targets
#4
Francesca B Aiello, Tad Guszczynski, Wenqing Li, Julie A Hixon, Qiong Jiang, Deborah L Hodge, Tania Massignan, Chiara Di Lisio, Anand Merchant, Antonio D Procopio, Valentina Bonetto, Scott K Durum
IL-7 is required for T cell differentiation and mature T cell homeostasis and promotes pro-B cell proliferation and survival. Tyrosine phosphorylation plays a central role in IL-7 signaling. We identified by two-dimensional electrophoresis followed by anti-phosphotyrosine immunoblotting and mass spectrometry sixteen tyrosine phosphorylated proteins from the IL-7-dependent cell line D1. IL-7 stimulation induced the phosphorylation of the proteins STI1, ATIC and hnRNPH, involved in pathways related to survival, proliferation and gene expression, respectively, and increased the phosphorylation of CrkL, a member of a family of adaptors including the highly homologous Crk isoforms CrkII and CrkI, important in multiple signaling pathways...
July 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29554925/induction-of-apoptosis-in-imatinib-sensitive-and-resistant-chronic-myeloid-leukemia-cells-by-efficient-disruption-of-bcr-abl-oncogene-with-zinc-finger-nucleases
#5
Ningshu Huang, Zhenglan Huang, Miao Gao, Zhenhong Luo, Fangzhu Zhou, Lin Liu, Qing Xiao, Xin Wang, Wenli Feng
BACKGROUND: The bcr-abl fusion gene is the pathological origin of chronic myeloid leukemia (CML) and plays a critical role in the resistance of imatinib. Thus, bcr-abl disruption-based novel therapeutic strategy may warrant exploration. In our study, we were surprised to find that the characteristics of bcr-abl sequences met the design requirements of zinc finger nucleases (ZFNs). METHODS: We constructed the ZFNs targeting bcr-abl with high specificity through simple modular assembly approach...
March 20, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29423045/ovatodiolide-targets-chronic-myeloid-leukemia-stem-cells-by-epigenetically-upregulating-hsa-mir-155-suppressing-the-bcr-abl-fusion-gene-and-dysregulating-the-pi3k-akt-mtor-pathway
#6
Yue-Xing Tu, Shi-Bing Wang, Luo-Qin Fu, Shuang-Shuang Li, Qian-Peng Guo, Yi Wu, Xiao-Zhou Mou, Xiang-Min Tong
Chronic myeloid leukemia (CML) is a myeloproliferative pathology, originating from the hematopoietic cancer stem cells (hCSCs) due to the Bcl-Abl Philadelphia chromosome transformation. However, targeting these hCSCs as an effective anti-CML strategy is relatively less explored. Ovatodiolide (Ova) is a natural diterpenoid isolate of Anisomeles indica with broad anticancer activity. In this study, we investigated the anti-hCSCs potential of Ova against CD34+ /CD38- , CD34+ /CD38+ , and unsorted K562 cell lines using flow cytometry, western blot, RT-PCR, genomic mapping, and tumorsphere formation assays...
January 9, 2018: Oncotarget
https://www.readbyqxmd.com/read/29403024/mir-429-suppresses-tumor-migration-and-invasion-by-targeting-crkl-in-hepatocellular-carcinoma-via-inhibiting-raf-mek-erk-pathway-and-epithelial-mesenchymal-transition
#7
Chunmei Guo, Dongting Zhao, Qiuling Zhang, Shuqing Liu, Ming-Zhong Sun
Tumor metastasis is one of the main causes of hepatocellular carcinoma (HCC) high mortality. CRKL (v-crk sarcoma virus CT10 oncogene homologue (avian)-like) play important roles in tumor metastasis, however, the exact role and underlying mechanism of CRKL in HCC is still unknown. In our study, we demonstrated miR-429 negatively regulated CRKL expression via selectively binding to CRKL-3'-UTR at 3728-3735 bp site by post-transcriptionally mediating its functionality. Re-expression and silencing of miR-429 was remarkably effective in suppressing and promoting HepG2 cell migration and invasion in vitro...
February 5, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29368338/quantitative-proteomics-reveals-that-mir-222-inhibits-erythroid-differentiation-by-targeting-blvra-and-crkl
#8
Li Jiang, Xing Wang, Yong Wang, Xiaoyan Chen
miR-222 plays an important role in erythroid differentiation, but the potential targets of miR-222 in the regulation of erythroid differentiation remain to be determined. The target genes of miR-222 were identified by proteomics combined with bioinformatics analysis in this study. Thirteen proteins were upregulated, and 13 were downregulated in K562 cells following transfection with miR-222 inhibitor for 24 and 48 hours. Among these proteins, BLVRA and CRKL were upregulated after transfection of miR-222 inhibitor in K562 cells and human CD34+ HPCs...
January 24, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29360039/crk-proteins-transduce-fgf-signaling-to-promote-lens-fiber-cell-elongation
#9
Tamica N Collins, Yingyu Mao, Hongge Li, Michael Bouaziz, Angela Hong, Gen-Sheng Feng, Fen Wang, Lawrence A Quilliam, Lin Chen, Taeju Park, Tom Curran, Xin Zhang
Specific cell shapes are fundamental to the organization and function of multicellular organisms. Fibroblast Growth Factor (FGF) signaling induces the elongation of lens fiber cells during vertebrate lens development. Nonetheless, exactly how this extracellular FGF signal is transmitted to the cytoskeletal network has previously not been determined. Here, we show that the Crk family of adaptor proteins, Crk and Crkl, are required for mouse lens morphogenesis but not differentiation. Genetic ablation and epistasis experiments demonstrated that Crk and Crkl play overlapping roles downstream of FGF signaling in order to regulate lens fiber cell elongation...
January 23, 2018: ELife
https://www.readbyqxmd.com/read/29348127/murine-chronic-graft-versus-host-disease-proteome-profiling-discovers-ccl15-as-a-novel-biomarker-in-patients
#10
Jing Du, Ryan Flynn, Katelyn Paz, Hong-Gang Ren, Yuko Ogata, Qing Zhang, Philip R Gafken, Barry E Storer, Nathan H Roy, Janis K Burkhardt, Wendy Mathews, Jakub Tolar, Stephanie J Lee, Bruce R Blazar, Sophie Paczesny
Improved diagnostic and treatment methods are needed for chronic graft-versus-host disease (cGVHD), the leading cause of late nonrelapse mortality (NRM) in long-term survivors of allogenic hematopoietic cell transplantation. Validated biomarkers that facilitate disease diagnosis and classification generally are lacking in cGVHD. Here, we conducted whole serum proteomics analysis of a well-established murine multiorgan system cGVHD model. We discovered 4 upregulated proteins during cGVHD that are targetable by genetic ablation or blocking antibodies, including the RAS and JUN kinase activator, CRKL, and CXCL7, CCL8, and CCL9 chemokines...
April 12, 2018: Blood
https://www.readbyqxmd.com/read/29344280/mir-378-and-mir-1827-regulate-tumor-invasion-migration-and-angiogenesis-in-human-lung-adenocarcinoma-by-targeting-rbx1-and-crkl-respectively
#11
Chai San Ho, Suzita Mohd Noor, Noor Hasima Nagoor
MicroRNAs (miRNAs) have been extensively studied over the decades and have been proposed as potential molecular targets for cancer treatment. Studies have shown that miR-378 participates in numerous biological processes in various cancers; whereas miR-1827 has only been reported in pediatric glioma. The mechanism of how miRNAs modulate lung cancer metastasis remains unclear. Our previous study demonstrated that miR-378 is up-regulated while miR-1827 is down-regulated in high invasive lung cancer sub-cell lines, and their biological functions have been described...
2018: Journal of Cancer
https://www.readbyqxmd.com/read/29295725/microrna-379-suppresses-cervical-cancer-cell-proliferation-and-invasion-by-directly-targeting-v-crk-avian-sarcoma-virus-ct10-oncogene-homolog-like
#12
Xi Shi, Na Yuan, Shili Zhang, Fukang Yuan, Xiaohong Wang
Cervical cancer is the fourth most common malignancy among females worldwide. MicroRNA-379 (miR-379) is aberrantly expressed in multiple human cancer types. However, the expression pattern, roles and detailed regulatory mechanisms of miR-379 in cervical cancer remain unknown. In this study, we found that miR-379 expression was downregulated in cervical cancer tissues and cell lines. Low miR-379 expression was correlated with International Federation of Gynecology and Obstetrics (FIGO) stage, lymph node metastasis and distant metastasis...
January 2, 2018: Oncology Research
https://www.readbyqxmd.com/read/29155146/hdac-inhibitor-suppresses-proliferation-and-invasion-of-breast-cancer-cells-through-regulation-of-mir-200c-targeting-crkl
#13
Xuehai Bian, Zhongxing Liang, Amber Feng, Eric Salgado, Hyunsuk Shim
Although histone deacetylase (HDAC) inhibitors have been shown to effectively induce the inhibition of proliferation and migration in breast cancer, the anticancer mechanism remains poorly understood. Our studies show that miR-200c was significantly downregulated in breast cancer cell lines compared to normal cell lines and inversely correlated with the levels of class IIa HDACs and CRKL. HDAC inhibitors and the ectopic expression of miR-200c as tumor suppressors inhibited the proliferation, invasion, and migration of breast cancer cells by downregulating CRKL...
January 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29025973/dynamic-multi-site-phosphorylation-by-fyn-and-abl-drives-the-interaction-between-crkl-and-the-novel-scaffolding-receptors-dcbld1-and-dcbld2
#14
Anna M Schmoker, Jaye L Weinert, Kyle J Kellett, Hannah E Johnson, Ryan M Joy, Marion E Weir, Alicia M Ebert, Bryan A Ballif
Discoidin, CUB, and LCCL domain containing 2 (DCBLD2) is a neuropilin-like transmembrane scaffolding receptor with known and anticipated roles in vascular remodeling and neuronal positioning. DCBLD2 is also up-regulated in several cancers and can drive glioblastomas downstream of activated epidermal growth factor receptor. While a few studies have shown either a positive or negative role for DCBLD2 in regulating growth factor receptor signaling, little is known about the conserved signaling features of DCBLD family members that drive their molecular activities...
November 21, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28945609/does-a-p53-wild-type-immunophenotype-exclude-a-diagnosis-of-endometrial-serous-carcinoma
#15
Oluwole Fadare, Andres A Roma, Vinita Parkash, Wenxin Zheng, Vighnesh Walavalkar
An aberrant p53 immunophenotype may be identified in several histotypes of endometrial carcinoma, and is accordingly recognized to lack diagnostic specificity in and of itself. However, based on the high frequency with which p53 aberrations have historically been identified in endometrial serous carcinoma, a mutation-type immunophenotype is considered to be highly sensitive for the histotype. Using an illustrative case study and a review of the literature, we explore a relatively routine diagnostic question: whether the negative predictive value of a wild-type p53 immunophenotype for serous carcinoma is absolute, that is, whether a p53-wild type immunophenotype is absolutely incompatible with a diagnosis of serous carcinoma...
January 2018: Advances in Anatomic Pathology
https://www.readbyqxmd.com/read/28887306/the-long-noncoding-rna-pcat-1-links-the-microrna-mir-215-to-oncogene-crkl-mediated-signaling-in-hepatocellular-carcinoma
#16
Yanli Ren, Jinhua Shang, Jinliang Li, Wenjuan Liu, Zhao Zhang, Jupeng Yuan, Ming Yang
The long non-coding RNA (lncRNA) PCAT-1 resides in the chromosome 8q24 cancer-risk locus and acts as a vital oncogene during tumorigenesis and progression. However, how PCAT-1 is post-transcriptionally regulated, for example, by small ncRNAs, such as microRNAs (miRNAs) is largely unknown. Here, we report how miRNAs regulate PCAT-1 expression and also investigate the biological significance of this regulation in hepatocellular carcinoma (HCC). We found that miR-215, a P53-inducible miRNA, is a key regulator of PCAT-1 expression in HCC and identified an interaction between miR-215 and PCAT-1 in dual luciferase reporter gene assays...
October 27, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28882999/mir-193b-regulated-signaling-networks-serve-as-tumor-suppressors-in-liposarcoma-and-promote-adipogenesis-in-adipose-derived-stem-cells
#17
Ying Z Mazzu, Yulan Hu, Rajesh K Soni, Kelly M Mojica, Li-Xuan Qin, Phaedra Agius, Zachary M Waxman, Aleksandra Mihailovic, Nicholas D Socci, Ronald C Hendrickson, Thomas Tuschl, Samuel Singer
Well-differentiated and dedifferentiated liposarcomas (WDLS/DDLS) account for approximately 13% of all soft tissue sarcoma in adults and cause substantial morbidity or mortality in the majority of patients. In this study, we evaluated the functions of miRNA (miR-193b) in liposarcoma in vitro and in vivo Deep RNA sequencing on 93 WDLS, 145 DDLS, and 12 normal fat samples demonstrated that miR-193b was significantly underexpressed in DDLS compared with normal fat. Reintroduction of miR-193b induced apoptosis in liposarcoma cells and promoted adipogenesis in human adipose-derived stem cells (ASC)...
November 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28854975/ruxolitinib-nilotinib-cotreatment-inhibits-leukemia-propagating-cells-in-philadelphia-chromosome-positive-all
#18
Yuan Kong, Yi-Lin Wu, Yang Song, Min-Min Shi, Xie-Na Cao, Hong-Yan Zhao, Ya-Zhen Qin, Yue-Yun Lai, Hao Jiang, Qian Jiang, Xiao-Jun Huang
BACKGROUND: As one of the major treatment obstacles in Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ALL), relapse of Ph+ALL may result from the persistence of leukemia-propagating cells (LPCs). Research using a xenograft mouse assay recently determined that LPCs were enriched in the CD34+CD38-CD58- fraction in human Ph+ALL. Additionally, a cohort study demonstrated that Ph+ALL patients with a LPCs phenotype at diagnosis exhibited a significantly higher cumulative incidence of relapse than those with the other cell phenotypes even with uniform front-line imatinib-based therapy pre- and post-allotransplant, thus highlighting the need for novel LPCs-based therapeutic strategies...
August 30, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28723560/crkl-mediates-p110%C3%AE-dependent-pi3k-signaling-in-pten-deficient-cancer-cells
#19
Jing Zhang, Xueliang Gao, Fabienne Schmit, Guillaume Adelmant, Michael J Eck, Jarrod A Marto, Jean J Zhao, Thomas M Roberts
The p110β isoform of PI3K is preferentially activated in many tumors deficient in the phosphatase and tensin homolog (PTEN). However, the mechanism(s) linking PTEN loss to p110β activation remain(s) mysterious. Here, we identify CRKL as a member of the class of PI3Kβ-interacting proteins. Silencing CRKL expression in PTEN-null human cancer cells leads to a decrease in p110β-dependent PI3K signaling and cell proliferation. In contrast, CRKL depletion does not impair p110α-mediated signaling. Further study showed that CRKL binds to tyrosine-phosphorylated p130Cas in PTEN-null cancer cells...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28604963/-phenotypic-and-genotypic-analysis-of-a-fetus-carrying-an-intermediate-22q11-2-deletion-encompassing-the-crkl-gene
#20
Shaobin Lin, Xiaohe Zheng, Heng Gu, Mingzhen Li
OBJECTIVE: To delineate the phenotypic characteristics of 22q11.2 deletion syndrome and the role of CRKL gene in the pathogenesis of cardiac abnormalities. METHODS: G-banded karyotyping, single nucleotide polymorphism (SNP) array and fluorescence in situ hybridization (FISH) were performed on a fetus with tetralogy of Fallot detected by ultrasound. Correlation between the genotype and phenotype was explored after precise mapping of the breakpoints on chromosome 22q11...
June 10, 2017: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
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