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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
#1
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
#2
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
#3
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
#4
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
#5
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 non-relapse mortality (NRM) in long-term survivors of allogenic hematopoietic cell transplantation (allo-HCT). 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 multi-organ system cGVHD model. We discovered 4 up-regulated 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...
January 18, 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
#6
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
#7
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
#8
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...
November 15, 2017: 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
#9
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 (DCBLD) 2 is a neuropilin-like transmembrane scaffolding receptor with known and anticipated roles in vascular remodeling and neuronal positioning. DCBLD2 is also upregulated 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...
October 19, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28945609/does-a-p53-wild-type-immunophenotype-exclude-a-diagnosis-of-endometrial-serous-carcinoma
#10
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
#11
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
#12
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)...
September 7, 2017: Cancer Research
https://www.readbyqxmd.com/read/28854975/ruxolitinib-nilotinib-cotreatment-inhibits-leukemia-propagating-cells-in-philadelphia-chromosome-positive-all
#13
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
#14
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
#15
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
https://www.readbyqxmd.com/read/28595903/shc004-221a1-a-novel-tyrosine-kinase-potently-inhibits-t315i-mutant-bcr-abl-in-chronic-myeloid-leukemia
#16
Duowei Wang, Yan Zheng, Jiaying Li, Hongxi Wu, Xianjing Li, Ying Tang, Yang Liu, Jiani Li, Rui Sun, Youli Zhou, Jihong Sun, Yong Yang
Although judicious use of tyrosine kinase inhibitors that target BCR-ABL constitutes an effective strategy for the control of chronic myeloid leukemia (CML), drug resistance is observed due to kinase domain mutations, among which a major one is BCR-ABL(T315I). In this study, we identified SHC004-221A1 as a potent inhibitor of T315I and other BCR-ABL mutants. Biochemical assays demonstrated that SHC004-221A1 has an inhibitory effect on all selected BCR-ABL mutants. In vitro studies showed that SHC004-221A1 inhibited the proliferation of tumor cell lines carrying native and T315I mutant BCR-ABL...
September 15, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28558797/expression-of-signaling-adaptor-proteins-predicts-poor-prognosis-in-pancreatic-ductal-adenocarcinoma
#17
Lili Wang, Junliang Lu, Huanwen Wu, Li Wang, Xiaolong Liang, Zhiyong Liang, Tonghua Liu
BACKGROUND: Adaptor proteins bridge the gap between cell surface receptors and their downstream signaling elements. The clinicopathological and prognostic values of adaptor proteins remain poorly understood. The purpose of the present study was to explore the expression and prognostic value of three adaptor proteins: GRB2-associated binding protein 2 (GAB2), CRK-like protein (CRKL) and fibroblast growth factor receptor substrate 2 (FRS2) in pancreatic ductal adenocarcinoma (PDAC). METHODS: The expression of GAB2, CRKL, and FRS2 in 77 formalin fixed paraffin embedded (FFPE) samples from 77 PDAC patients, along with three paired fresh PDAC and matched normal tissues from 3 PDAC patients was analyzed by immunohistochemistry and western blot, respectively...
May 30, 2017: Diagnostic Pathology
https://www.readbyqxmd.com/read/28556300/development-of-protein-degradation-inducers-of-oncogenic-bcr-abl-protein-by-conjugation-of-abl-kinase-inhibitors-and-iap-ligands
#18
Norihito Shibata, Naoki Miyamoto, Katsunori Nagai, Kenichiro Shimokawa, Tomoya Sameshima, Nobumichi Ohoka, Takayuki Hattori, Yasuhiro Imaeda, Hiroshi Nara, Nobuo Cho, Mikihiko Naito
Chromosomal translocation occurs in some cancer cells, which results in the expression of aberrant oncogenic fusion proteins that include BCR-ABL in chronic myelogenous leukemia (CML). Inhibitors of ABL tyrosine kinase, such as imatinib and dasatinib, exhibit remarkable therapeutic effects, although emergence of drug resistance hampers the therapy during long-term treatment. An alternative approach to treat CML is to downregulate the BCR-ABL protein. We have devised a protein knockdown system by hybrid molecules named Specific and Non-genetic inhibitor of apoptosis protein [IAP]-dependent Protein Erasers (SNIPER), which is designed to induce IAP-mediated ubiquitylation and proteasomal degradation of target proteins, and a couple of SNIPER(ABL) against BCR-ABL protein have been developed recently...
August 2017: Cancer Science
https://www.readbyqxmd.com/read/28526413/tcr-crosslinking-promotes-crk-adaptor-protein-binding-to-tyrosine-phosphorylated-cd3%C3%AE-chain
#19
Guangyu Dong, Rachel Kalifa, Pulak Ranjan Nath, Sigal Gelkop, Noah Isakov
T cell antigen receptor (TCR) binding of a peptide antigen presented by antigen-presenting cells (APCs) in the context of surface MHC molecules initiates signaling events that regulate T cell activation, proliferation and differentiation. A key event in the activation process is the phosphorylation of the conserved tyrosine residues within the CD3 chain immunoreceptor tyrosine-based activation motifs (ITAMs), which operate as docking sites for SH2 domain-containing effector proteins. Phosphorylation of the CD3ζ ITAMs renders the CD3 chain capable of binding the ζ-chain associated protein 70 kDa (ZAP70), a protein tyrosine kinase that is essential for T cell activation...
July 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28500033/proteomic-responses-to-elevated-ocean-temperature-in-ovaries-of-the-ascidian-ciona-intestinalis
#20
Chelsea E Lopez, Hannah C Sheehan, David A Vierra, Paul A Azzinaro, Thomas H Meedel, Niall G Howlett, Steven Q Irvine
Ciona intestinalis, a common sea squirt, exhibits lower reproductive success at the upper extreme of the water temperatures it experiences in coastal New England. In order to understand the changes in protein expression associated with elevated temperatures, and possible response to global temperature change, we reared C. intestinalis from embryos to adults at 18°C (a temperature at which they reproduce normally at our collection site in Rhode Island) and 22°C (the upper end of the local temperature range)...
July 15, 2017: Biology Open
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