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https://www.readbyqxmd.com/read/28389139/emerging-molecular-therapeutic-targets-for-cholangiocarcinoma
#1
REVIEW
Sumera Rizvi, Gregory J Gores
Cholangiocarcinomas (CCAs) are diverse epithelial tumors arising from the liver or large bile ducts with features of cholangiocyte differentiation, and are classified anatomically into intrahepatic (iCCA), perihilar (pCCA), and distal CCA (dCCA). Each subtype has distinct risk factors, molecular pathogenesis, therapeutic options, and prognosis. CCA is an aggressive malignancy with a poor overall prognosis and median survival of less than 2 years in patients with advanced disease. Potentially curative surgical treatment options are limited to the subset of patients with early stage disease...
April 4, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28331201/synchrony-of-plant-cellular-circadian-clocks-with-heterogeneous-properties-under-light-dark-cycles
#2
Masaaki Okada, Tomoaki Muranaka, Shogo Ito, Tokitaka Oyama
Individual cells in a plant can work independently as circadian clocks, and their properties are the basis of various circadian phenomena. The behaviour of individual cellular clocks in Lemna gibba was orderly under 24-h light/dark cycles despite their heterogeneous free-running periods (FRPs). Here, we reveal the entrainment habits of heterogeneous cellular clocks using non-24-h light/dark cycles (T-cycles). The cellular rhythms of AtCCA1::LUC under T = 16 h cycles showed heterogeneous entrainment that was associated with their heterogeneous FRPs...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28319089/natural-variation-at-the-soybean-j-locus-improves-adaptation-to-the-tropics-and-enhances-yield
#3
Sijia Lu, Xiaohui Zhao, Yilong Hu, Shulin Liu, Haiyang Nan, Xiaoming Li, Chao Fang, Dong Cao, Xinyi Shi, Lingping Kong, Tong Su, Fengge Zhang, Shichen Li, Zheng Wang, Xiaohui Yuan, Elroy R Cober, James L Weller, Baohui Liu, Xingliang Hou, Zhixi Tian, Fanjiang Kong
Soybean is a major legume crop originating in temperate regions, and photoperiod responsiveness is a key factor in its latitudinal adaptation. Varieties from temperate regions introduced to lower latitudes mature early and have extremely low grain yields. Introduction of the long-juvenile (LJ) trait extends the vegetative phase and improves yield under short-day conditions, thereby enabling expansion of cultivation in tropical regions. Here we report the cloning and characterization of J, the major classical locus conferring the LJ trait, and identify J as the ortholog of Arabidopsis thaliana EARLY FLOWERING 3 (ELF3)...
March 20, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28215940/elf5-is-a-principal-cell-lineage-specific-transcription-factor-in-the-kidney-that-contributes-to-aqp2-and-avpr2-gene-expression
#4
Justin Grassmeyer, Malini Mukherjee, Jennifer deRiso, Casey Hettinger, Monica Bailey, Satrajit Sinha, Jane E Visvader, Haotian Zhao, Eric Fogarty, Kameswaran Surendran
The mammalian kidney collecting ducts are critical for water, electrolyte and acid-base homeostasis and develop as a branched network of tubular structures composed of principal cells intermingled with intercalated cells. The intermingled nature of the different collecting duct cell types has made it challenging to identify unique and critical factors that mark and/or regulate the development of the different collecting duct cell lineages. Here we report that the canonical Notch signaling pathway components, RBPJ and Presinilin1 and 2, are involved in patterning the mouse collecting duct cell fates by maintaining a balance between principal cell and intercalated cell fates...
April 1, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28202598/early-flowering3-redundancy-fine-tunes-photoperiod-sensitivity
#5
Andrew J S Rubenach, Valérie Hecht, Jacqueline K Vander Schoor, Lim Chee Liew, Gregoire Aubert, Judith Burstin, James L Weller
Three pea (Pisum sativum) loci controlling photoperiod sensitivity, HIGH RESPONSE (HR), DIE NEUTRALIS (DNE), and STERILE NODES (SN), have recently been shown to correspond to orthologs of Arabidopsis (Arabidopsis thaliana) circadian clock genes EARLY FLOWERING3 (ELF3), ELF4, and LUX ARRHYTHMO, respectively. A fourth pea locus, PHOTOPERIOD (PPD), also contributes to the photoperiod response in a similar manner to SN and DNE, and recessive ppd mutants on a spring-flowering hr mutant background show early, photoperiod-insensitive flowering...
April 2017: Plant Physiology
https://www.readbyqxmd.com/read/28199976/elf3-is-a-negative-regulator-of-epithelial-mesenchymal-transition-in-ovarian-cancer-cells
#6
Tsz-Lun Yeung, Cecilia S Leung, Kwong-Kwok Wong, Arthur Gutierrez-Hartmann, Joseph Kwong, David M Gershenson, Samuel C Mok
Transcription factors are master switches for various biochemical pathways. However, transcription factors involved in the pathogenesis of ovarian cancer have yet to be explored thoroughly. Therefore, in the present study, we assessed the prognostic value of the transcription factor E74-like factor 3 (ELF3) identified via transcriptome profiling of the epithelial components of microdissected ovarian tumor samples isolated from long- and short-term survivors and determined its roles in ovarian cancer pathogenesis...
March 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28161437/tissue-organization-alters-gene-expression-in-equine-induced-trophectoderm-cells
#7
Brad M Reinholt, Jennifer S Bradley, Robert D Jacobs, Alan D Ealy, Sally E Johnson
Rapid morphological and gene expression changes occur during the early formation of a mammalian blastocyst. Critical to successful retention of the blastocyst and pregnancy is a functional trophectoderm (TE) that supplies the developing embryo with paracrine factors and hormones. The contribution of TE conformational changes to gene expression was examined in equine induced trophoblast (iTr) cells. Equine iTr cells were cultured as monolayers or in suspension to form spheres. The spheres are hollow and structurally reminiscent of native equine blastocysts...
February 1, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28008680/perception-and-signalling-of-light-and-temperature-cues-in-plants
#8
Martina Legris, Cristina Nieto, Romina Sellaro, Salomé Prat, Jorge J Casal
Light and temperature patterns often correlate in natural plant growth conditions. In this review, we analyse the perception and signalling mechanisms shared by both of these environmental cues and discuss the functional implications of their convergence to control plant growth. The first point of integration is the phytochrome B (phyB) receptor, which senses light and temperature. Downstream of phyB, the signalling core comprises two branches, one that involves PHYTOCHROME INTERACTING FACTOR 4 (PIF4) and the other, CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1) and ELONGATED HYPOCOTYL 5 (HY5)...
December 23, 2016: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/27866166/variability-in-a-short-tandem-repeat-mediates-complex-epistatic-interactions-in-arabidopsis-thaliana
#9
Maximilian Oliver Press, Christine Queitsch
Short tandem repeats (STRs) are hypervariable genetic elements that occur frequently in coding regions. Their high mutation rate readily generates genetic variation, contributing to adaptive evolution and human diseases. We previously reported that natural ELF3 polyglutamine variants cause reciprocal genetic incompatibilities in two divergent Arabidopsis thaliana backgrounds. Here, we dissect the genetic architecture of this incompatibility, revealing as many as four loci putatively interacting with ELF3 We were able to specifically identify one such ELF3-interacting gene, LSH9 We further used a yeast two-hybrid strategy to identify proteins whose physical interactions with ELF3 were affected by polyglutamine tract length...
January 2017: Genetics
https://www.readbyqxmd.com/read/27827952/cell-free-rna-content-in-peripheral-blood-as-potential-biomarkers-for-detecting-circulating-tumor-cells-in-non-small-cell-lung-carcinoma
#10
Xin-Min Yu, Yi-Chen Wu, Xiang Liu, Xian-Cong Huang, Xiu-Xiu Hou, Jiu-Li Wang, Xiang-Liu Cheng, Wei-Min Mao, Zhi-Qiang Ling
Circulating tumor cells (CTCs) have been implicated in tumor progression and prognosis. Techniques detecting CTCs in the peripheral blood of patients with non-small cell lung carcinoma (NSCLC) may help to identify individuals likely to benefit from early systemic treatment. However, the detection of CTCs with a single marker is challenging, owing to low specificity and sensitivity and due to the heterogeneity and rareness of CTCs. Herein, the probability of cell-free RNA content in the peripheral blood as a potential biomarker for detecting CTCs in cancer patients was investigated...
November 5, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27699256/claudin-low-bladder-tumors-are-immune-infiltrated-and-actively-immune-suppressed
#11
Jordan Kardos, Shengjie Chai, Lisle E Mose, Sara R Selitsky, Bhavani Krishnan, Ryoichi Saito, Michael D Iglesia, Matthew I Milowsky, Joel S Parker, William Y Kim, Benjamin G Vincent
We report the discovery of a claudin-low molecular subtype of high-grade bladder cancer that shares characteristics with the homonymous subtype of breast cancer. Claudin-low bladder tumors were enriched for multiple genetic features including increased rates of RB1, EP300, and NCOR1 mutations; increased frequency of EGFR amplification; decreased rates of FGFR3, ELF3, and KDM6A mutations; and decreased frequency of PPARG amplification. While claudin-low tumors showed the highest expression of immune gene signatures, they also demonstrated gene expression patterns consistent with those observed in active immunosuppression...
March 17, 2016: JCI Insight
https://www.readbyqxmd.com/read/27667567/a-novel-regulatory-relationship-between-ripk4-and-elf3-in-keratinocytes
#12
Glen M Scholz, Nur S Sulaiman, Sahar Al Baiiaty, Mei Qi Kwa, Eric C Reynolds
Keratinocytes are central to the barrier functions of surface epithelia, such as the gingiva and epidermis. RIPK4 is a key regulator of keratinocyte differentiation; however, the signalling pathways in which it functions remain poorly defined. In this study, we identified a regulatory relationship between RIPK4 and ELF3, an ETS family transcription factor. RIPK4 was shown to be important for the upregulation of ELF3 gene expression by the PKC agonist PMA in both oral and epidermal keratinocytes. RIPK4 promotes keratinocyte differentiation in part by phosphorylating and thereby activating the IRF6 transcription factor...
December 2016: Cellular Signalling
https://www.readbyqxmd.com/read/27612592/meta-analysis-of-the-luminal-and-basal-subtypes-of-bladder-cancer-and-the-identification-of-signature-immunohistochemical-markers-for-clinical-use
#13
Vipulkumar Dadhania, Miao Zhang, Li Zhang, Jolanta Bondaruk, Tadeusz Majewski, Arlene Siefker-Radtke, Charles C Guo, Colin Dinney, David E Cogdell, Shizhen Zhang, Sangkyou Lee, June G Lee, John N Weinstein, Keith Baggerly, David McConkey, Bogdan Czerniak
BACKGROUND: It has been suggested that bladder cancer can be divided into two molecular subtypes referred to as luminal and basal with distinct clinical behaviors and sensitivities to chemotherapy. We aimed to validate these subtypes in several clinical cohorts and identify signature immunohistochemical markers that would permit simple and cost-effective classification of the disease in primary care centers. METHODS: We analyzed genomic expression profiles of bladder cancer in three cohorts of fresh frozen tumor samples: MD Anderson (n=132), Lund (n=308), and The Cancer Genome Atlas (TCGA) (n=408) to validate the expression signatures of luminal and basal subtypes and relate them to clinical follow-up data...
October 2016: EBioMedicine
https://www.readbyqxmd.com/read/27580625/barley-hordeum-vulgare-circadian-clock-genes-can-respond-rapidly-to-temperature-in-an-early-flowering-3-dependent-manner
#14
Brett Ford, Weiwei Deng, Jenni Clausen, Sandra Oliver, Scott Boden, Megan Hemming, Ben Trevaskis
An increase in global temperatures will impact future crop yields. In the cereal crops wheat and barley, high temperatures accelerate reproductive development, reducing the number of grains per plant and final grain yield. Despite this relationship between temperature and cereal yield, it is not clear what genes and molecular pathways mediate the developmental response to increased temperatures. The plant circadian clock can respond to changes in temperature and is important for photoperiod-dependent flowering, and so is a potential mechanism controlling temperature responses in cereal crops...
October 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/27578198/genome-wide-association-study-for-milk-somatic-cell-score-in-holstein-cattle-using-copy-number-variation-as-markers
#15
M Durán Aguilar, S I Román Ponce, F J Ruiz López, E González Padilla, C G Vásquez Peláez, A Bagnato, M G Strillacci
Mastitis, the most common and expensive disease in dairy cows, implies significant losses in the dairy industry worldwide. Many efforts have been made to improve genetic mastitis resistance in dairy populations, but low heritability of this trait made this process not as effective as desired. The purpose of this study was to identify genomic regions explaining genetic variation of somatic cell count using copy number variations (CNVs) as markers in the Holstein population, genotyped with the Illumina BovineHD BeadChip...
February 2017: Journal of Animal Breeding and Genetics, Zeitschrift Für Tierzüchtung und Züchtungsbiologie
https://www.readbyqxmd.com/read/27564448/pif4-and-elf3-act-independently-in-arabidopsis-thaliana-thermoresponsive-flowering
#16
Maximilian O Press, Amy Lanctot, Christine Queitsch
Plants have evolved elaborate mechanisms controlling developmental responses to environmental stimuli. A particularly important stimulus is temperature. Previous work has identified the interplay of PIF4 and ELF3 as a central circuit underlying thermal responses in Arabidopsis thaliana. However, thermal responses vary widely among strains, possibly offering mechanistic insights into the wiring of this circuit. ELF3 contains a polyglutamine (polyQ) tract that is crucial for ELF3 function and varies in length across strains...
2016: PloS One
https://www.readbyqxmd.com/read/27446923/ese-1-in-early-development-approaches-for-the-future
#17
Chan Mi Lee, Jing Wu, Yi Xia, Jim Hu
E26 transformation-specific (Ets) family of transcription factors are characterized by the presence of Ets-DNA binding domain and have been found to be highly involved in hematopoiesis and various tissue differentiation. ESE-1, or Elf3 in mice, is a member of epithelium-specific Ets sub-family which is most prominently expressed in epithelial tissues such as the gut, mammary gland, and lung. The role of ESE-1 during embryogenesis had long been alluded from 30% fetal lethality in homozygous knockout mice and its high expression in preimplantation mouse embryos, but there has been no in-depth of analysis of ESE-1 function in early development...
2016: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/27380315/mutation-of-rice-early-flowering3-1-oself3-1-delays-leaf-senescence-in-rice
#18
Yasuhito Sakuraba, Su-Hyun Han, Hyun-Jung Yang, Weilan Piao, Nam-Chon Paek
In Arabidopsis, EARLY FLOWERING3 (ELF3) has pivotal roles in controlling circadian rhythm and photoperiodic flowering. In addition, ELF3 negatively regulates leaf senescence by repressing the transcription of PHYTOCHROME-INTERACTING FACTOR4 (PIF4) and PHYTOCHROME-INTERACTING FACTOR5 (PIF5); elf3 mutants senesce earlier and ELF3-overexpressing (ELF3-OX) plants senesce later than wild type (WT). Here, we show that in contrast to Arabidopsis ELF3, which represses senescence, the rice homolog OsELF3.1 promotes leaf senescence; oself3...
September 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/27371613/differing-expression-profiles-of-notch-enterocyte-and-wnt-secretory-lineage-signallings-are-associated-with-morphological-diversity-of-appendiceal-tumours
#19
Xianyong Gui, Ziran Meng, Yarrow J McConnell, Shuhong Liu, Vincent G Falck, Lloyd A Mack, Walley J Temple
BACKGROUND: Tumours of appendix, including classic carcinoid tumour (CCT), goblet cell carcinoid (GCC), low-grade appendiceal mucinous neoplasm, high-grade appendiceal mucinous neoplasm/mucinous carcinoma (MCA) and non-mucinous adenocarcinoma (NMA), show different and sometimes mixed morphological features. It was hypothesised that these tumours originate from common tumour stem cell(s) with potential of various cell lineage differentiation. In normal intestinal epithelium, absorptive lineage (enterocytes) differentiation is driven by Notch-Hes1 pathway, while secretory lineage is driven by Wnt-Math1 pathway and further separated by different downstream signallings into three sublineages (Gfi1-Klf4/Elf3 for goblet cells, Gfi1-Sox9 for Paneth cells and Ngn3-Pdx1/Beta2/Pax4 for enteroendocrine cells)...
January 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/27310669/elf3-modulates-type-ii-collagen-gene-col2a1-transcription-in-chondrocytes-by-inhibiting-sox9-cbp-p300-driven-histone-acetyltransferase-activity
#20
Miguel Otero, Haibing Peng, Karim El Hachem, Kirsty L Culley, Elisabeth B Wondimu, Justin Quinn, Hiroshi Asahara, Kaneyuki Tsuchimochi, Ko Hashimoto, Mary B Goldring
AIM: We showed previously that E74-like factor 3 (ELF3) protein levels are increased in osteoarthritic (OA) cartilage, that ELF3 accounts for inflammatory cytokine-driven MMP13 gene expression, and that, upon induction by interleukin-1β, ELF3 binds to the COL2A1 promoter and suppresses its activity in chondrocytes. Here, we aimed to further investigate the mechanism/s by which ELF3 represses COL2A1 transcription in chondrocytes. METHODS AND RESULTS: We report that ELF3 inhibits Sox9-driven COL2A1 promoter activity by interfering with the activator functions of CBP/300 and Sox9...
January 2017: Connective Tissue Research
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