scholarly journals Characterization of POU2F1 Gene and Its Potential Impact on the Expression of Genes Involved in Fur Color Formation in Rex Rabbit

Genes ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 575 ◽  
Author(s):  
Naisu Yang ◽  
Bohao Zhao ◽  
Shuaishuai Hu ◽  
Zhiyuan Bao ◽  
Ming Liu ◽  
...  
Keyword(s):  
Transcription Factor ◽  
Expression Patterns ◽  
Dorsal Skin ◽  
Color Formation ◽  
Expression Of Genes ◽  
Potential Impact ◽  
Fur Color ◽  
Rex Rabbit

The naturally colorful fur of the Rex rabbit is becoming increasingly popular in the modern textile market. Our previous study found that POU class 2 homeobox 1 gene (POU2F1) potentially affects the expression of genes involved in fur color formation in the Rex rabbit, but the function and regulation of POU2F1 has not been reported. In this study, the expression patterns of POU2F1 in Rex rabbits of various colors, as well as in different organs, were analyzed by RT-qPCR. Interference and overexpression of POU2F1 were used to identify the potential effects of POU2F1 on other genes related to fur color formation. The results show that the levels of POU2F1 expression were significantly higher in the dorsal skin of the brown and protein yellow Rex rabbits, compared with that of the black one. POU2F1 mRNAs were widespread in the tissues examined in this study and showed the highest level in the lungs. By transfecting rabbit melanocytes with an POU2F1-overexpression plasmid, we found that the POU2F1 protein was located at the nucleus, and the protein showed the classic characteristics of a transcription factor. In addition, abnormal expression of POU2F1 significantly affected the expression of pigmentation-related genes, including SLC7A11, MITF, SLC24A5, MC1R, and ASIP, revealing the regulatory roles of POU2F1 on pigmentation. The results provide the basis for further exploration of the role of POU2F1 in fur color formation of the Rex rabbit.

scholarly journals HbxB Is a Key Regulator for Stress Response and β-Glucan Biogenesis in Aspergillus nidulans

2021 ◽  
Vol 9 (1) ◽  
pp. 144
Author(s):  
Sung-Hun Son ◽  
Mi-Kyung Lee ◽  
Ye-Eun Son ◽  
Hee-Soo Park
Keyword(s):  
Transcription Factor ◽  
Transcription Factors ◽  
Aspergillus Nidulans ◽  
Deletion Mutant ◽  
Phenotypic Analysis ◽  
Spore Viability ◽  
Fungal Development ◽  
Expression Of Genes ◽  
Trehalose Biosynthesis

Homeobox transcription factors are conserved in eukaryotes and act as multi-functional transcription factors in filamentous fungi. Previously, it was demonstrated that HbxB governs fungal development and spore viability in Aspergillus nidulans. Here, the role of HbxB in A. nidulans was further characterized. RNA-sequencing revealed that HbxB affects the transcriptomic levels of genes associated with trehalose biosynthesis and response to thermal, oxidative, and radiation stresses in asexual spores called conidia. A phenotypic analysis found that hbxB deletion mutant conidia were more sensitive to ultraviolet stress. The loss of hbxB increased the mRNA expression of genes associated with β-glucan degradation and decreased the amount of β-glucan in conidia. In addition, hbxB deletion affected the expression of the sterigmatocystin gene cluster and the amount of sterigmatocystin. Overall, these results indicated that HbxB is a key transcription factor regulating trehalose biosynthesis, stress tolerance, β-glucan degradation, and sterigmatocystin production in A.nidulans conidia.

scholarly journals Identification of Potential Key lncRNAs in the Context of Mouse Myeloid Differentiation by Systematic Transcriptomics Analysis

Genes ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 630
Author(s):  
Yongqing Lan ◽  
Meng Li ◽  
Shuangli Mi
Keyword(s):  
Transcription Factor ◽  
Cell Model ◽  
Myeloid Differentiation ◽  
Rna Seq ◽  
Hematopoietic Differentiation ◽  
Granulocytic Differentiation ◽  
Expression Of Genes ◽  
Non Coding Rnas

Hematopoietic differentiation is a well-orchestrated process by many regulators such as transcription factor and long non-coding RNAs (lncRNAs). However, due to the large number of lncRNAs and the difficulty in determining their roles, the study of lncRNAs is a considerable challenge in hematopoietic differentiation. Here, through gene co-expression network analysis over RNA-seq data generated from representative types of mouse myeloid cells, we obtained a catalog of potential key lncRNAs in the context of mouse myeloid differentiation. Then, employing a widely used in vitro cell model, we screened a novel lncRNA, named Gdal1 (Granulocytic differentiation associated lncRNA 1), from this list and demonstrated that Gdal1 was required for granulocytic differentiation. Furthermore, knockdown of Cebpe, a principal transcription factor of granulocytic differentiation regulation, led to down-regulation of Gdal1, but not vice versa. In addition, expression of genes involved in myeloid differentiation and its regulation, such as Cebpa, were influenced in Gdal1 knockdown cells with differentiation blockage. We thus systematically identified myeloid differentiation associated lncRNAs and substantiated the identification by investigation of one of these lncRNAs on cellular phenotype and gene regulation levels. This study promotes our understanding of the regulation of myeloid differentiation and the characterization of roles of lncRNAs in hematopoietic system.

Distinct gene expression patterns in chronic lymphocytic leukemia defined by usage of specific VH genes

Blood ◽  
2006 ◽  
Vol 107 (5) ◽  
pp. 2090-2093 ◽  
Author(s):  
Dirk Kienle ◽  
Axel Benner ◽  
Alexander Kröber ◽  
Dirk Winkler ◽  
Daniel Mertens ◽  
...  
Keyword(s):  
Gene Expression ◽  
Chronic Lymphocytic Leukemia ◽  
Expression Patterns ◽  
Gene Expression Pattern ◽  
Cell Receptor ◽  
Lymphocytic Leukemia ◽  
Expression Of Genes ◽  
Vh Genes ◽  
Signaling Activation

The mutation status and usage of specific VH genes such as V3-21 and V1-69 are potentially independent pathogenic and prognostic factors in chronic lymphocytic leukemia (CLL). To investigate the role of antigenic stimulation, we analyzed the expression of genes involved in B-cell receptor (BCR) signaling/activation, cell cycle, and apoptosis control in CLL using these specific VH genes compared to VH mutated (VH-MUT) and VH unmutated (VH-UM) CLL not using these VH genes. V3-21 cases showed characteristic expression differences compared to VH-MUT (up: ZAP70 [or ZAP-70]; down: CCND2, P27) and VH-UM (down: PI3K, CCND2, P27, CDK4, BAX) involving several BCR-related genes. Similarly, there was a marked difference between VH unmutated cases using the V1-69 gene and VH-UM (up: FOS; down: BLNK, SYK, CDK4, TP53). Therefore, usage of specific VH genes appears to have a strong influence on the gene expression pattern pointing to antigen recognition and ongoing BCR stimulation as a pathogenic factor in these CLL subgroups.

scholarly journals Molecular Characterization of NDL1-AGB1 Mediated Salt Stress Signaling: Further Exploration of the Role of NDL1 Interacting Partners

Cells ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 2261
Author(s):  
Nidhi Gupta ◽  
Abhishek Kanojia ◽  
Arpana Katiyar ◽  
Yashwanti Mudgil
Keyword(s):  
Salt Stress ◽  
Stress Response ◽  
G Protein ◽  
Salinity Stress ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Negative Regulator ◽  
Salt Stress Response

Salt stress is considered to be the most severe abiotic stress. High soil salinity leads to osmotic and ionic toxicity, resulting in reduced plant growth and crop production. The role of G-proteins during salt stresses is well established. AGB1, a G-protein subunit, not only plays an important role during regulation of Na+ fluxes in roots, but is also involved in the translocation of Na+ from roots to shoots. N-Myc Downregulated like 1 (NDL1) is an interacting partner of G protein βγ subunits and C-4 domain of RGS1 in Arabidopsis. Our recent in-planta expression analysis of NDL1 reported changes in patterns during salt stress. Based on these expression profiles, we have carried out functional characterization of the AGB1-NDL1 module during salinity stress. Using various available mutant and overexpression lines of NDL1 and AGB1, we found that NDL1 acts as a negative regulator during salt stress response at the seedling stage, an opposite response to that of AGB1. On the other hand, during the germination phase of the plant, this role is reversed, indicating developmental and tissue specific regulation. To elucidate the mechanism of the AGB1-NDL1 module, we investigated the possible role of the three NDL1 stress specific interactors, namely ANNAT1, SLT1, and IDH-V, using yeast as a model. The present study revealed that NDL1 acts as a modulator of salt stress response, wherein it can have both positive as well as negative functions during salinity stress. Our findings suggest that the NDL1 mediated stress response depends on its developmental stage-specific expression patterns as well as the differential presence and interaction of the stress-specific interactors.

scholarly journals Insights into cadmium-induced carcinogenesis through an in-vitro study using C3H10T1/2Cl8 cells: the multifaceted role of mitochondria

2021 ◽  
Author(s):  
Monica Oldani ◽  
Anna Maria Villa ◽  
Marta Manzoni ◽  
Pasquale Melchioretto ◽  
Paolo Parenti ◽  
...  
Keyword(s):  
Confocal Microscopy ◽  
Oxidative Phosphorylation ◽  
Cell Transformation ◽  
Expression Patterns ◽  
In Vitro Study ◽  
Atp Synthesis ◽  
Cadmium Treatment

Abstract In this paper we report the metabolic characterization of two foci, F1 and F3, obtained at the end of Cell Transformation Assay (CTA), performed by treating C3H10T1/2Cl8 mouse embryo fibroblasts with 1 µM CdCl2 for 24 h. The elucidation of cadmium action mechanism can be useful both to improve the in vitro CTA and to yield insights into carcinogenesis. We previously showed that, despite being both completely transformed type III foci, F1 and F3 foci display different morphologies, proliferative behaviors and gene expression patterns. In this work, the metabolism of the two foci was investigated through Seahorse and enzyme activity assays; moreover, mitochondria were studied in confocal microscopy and reactive oxygen species were detected by flow cytometry. Results showed that F1 focus has higher glycolytic and TCA fluxes compared to F3 focus, and a more negative mitochondrial membrane potential (Δψ), so that most ATP synthesis is performed through oxidative phosphorylation. Confocal microscopy showed mitochondria crowded in the perinuclear region. On the other hand, F3 focus showed lower metabolic rates, with ATP mainly produced by glycolysis and damaged mitochondria. On the whole, our results showed that cadmium treatment induced lasting metabolic alterations in both foci. Triggered by the loss of Pasteur effect in F1 focus and by mitochondrial impairment in F3 focus, these alterations lead to a loss of coordination among glycolysis, TCA and oxidative phosphorylation, which leads to malignant transformation.

scholarly journals The Rice NRT2.4 Alters Metabolism and Nitrogen Uptake through Root Modulation

2021 ◽  
Author(s):  
Andressa Fabiane Faria de Souza ◽  
Carlos Alberto Bucher ◽  
Leilson Novaes Arruda ◽  
Rafael Passos Rangel ◽  
Leandro Azevedo Santos ◽  
...  
Keyword(s):  
Root Growth ◽  
Expression Patterns ◽  
Pcr Analysis ◽  
Nitrate Transport ◽  
Expression Of Genes ◽  
Nitrate Supply ◽  
Mutant Lines ◽  
Relative Gene ◽  
Relative Gene Expression Level

Abstract Purpose The expression patterns of the NRT2 genes have been well described, however, it is not well known the role of OsNRT2.4 in root growth. In this study we thus aimed at investigating the role of high-affinity NO3- transport OsNRT2.4 in NO3--regulated and the modulation of root growth.Methods Through the gene silencing technique amiRNA-mediated we successfully obtained osnrt2.4 knockdown lines to study the role of OsNRT2.4 on root growth under low nitrate conditions. We performed real time RT-PCR analysis to investigate the relative gene expression level in root and shoot, soluble metabolites, and measurement of root system.Results Knockdown of OsNRT2.4 did not affect rice growth. In comparison with wild-type (WT) plants showed that knockdown of OsNRT2.4 inhibited root formation under low NO3- supply. We demonstrated that the mutant lines had significantly increased NO3- uptake than WT plants when growth in different nitrate supply; osnrt2.4 knockdown lines showed an alteration in nitrogen metabolism, and this affected the root growth. The downregulation of OsNRT2.4 enhanced the expression of genes response of low external NO3- concentrations.Conclusion Herein we provide new insights in OsNRT2.4 functions. Our data demonstrated that OsNRT2.4 plays a role in root growth, nitrogen metabolic pathway and probably have functions in nitrate transport from root to shoot under low nitrate availability in rice.

Anterior neurectoderm is progressively induced during gastrulation: the role of the Xenopus homeobox gene orthodenticle

Development ◽  
1995 ◽  
Vol 121 (4) ◽  
pp. 993-1004 ◽  
Author(s):  
I.L. Blitz ◽  
K.W. Cho
Keyword(s):  
Expression Patterns ◽  
Functional Characterization ◽  
Ectopic Expression ◽  
Homeobox Gene ◽  
Neural Induction ◽  
Cement Gland ◽  
Spemann's Organizer ◽  
Vertical Contact

In order to study the regional specification of neural tissue we isolated Xotx2, a Xenopus homolog of the Drosophila orthodenticle gene. Xotx2 is initially expressed in Spemann's organizer and its expression is absent in the ectoderm of early gastrulae. As gastrulation proceeds, Xotx2 expression is induced in the overlying ectoderm and this domain of expression moves anteriorly in register with underlying anterior mesoderm throughout the remainder of gastrulation. The expression pattern of Xotx2 suggests that a wave of Xotx2 expression (marking anterior neurectoderm) travels through the ectoderm of the gastrula with the movement of underlying anterior (prechordal plate) mesoderm. This expression of Xotx2 is reminiscent of the Eyal-Giladi model for neural induction. According to this model, anterior neural-inducing signals emanating from underlying anterior mesoderm transiently induce anterior neural tissues after vertical contact with the overlying ectoderm. Further patterning is achieved when the ectoderm receives caudalizing signals as it comes in contact with more posterior mesoderm during subsequent gastrulation movements. Functional characterization of the Xotx2 protein has revealed its involvement in differentiation of the anterior-most tissue, the cement gland. Ectopic expression of Xotx2 in embryos induces extra cement glands in the skin as well as inducing a cement gland marker (XAG1) in isolated animal cap ectoderm. Microinjection of RNA encoding the organizer-specific homeo-domain protein goosecoid into the ventral marginal zone results in induction of the Xotx2 gene. This result, taken in combination with the indistinguishable expression patterns of Xotx2 and goosecoid in the anterior mesoderm suggests that Xotx2 is a target of goosecoid regulation.

Downregulation of apelin in the human placental chorionic villi from preeclamptic pregnancies

2015 ◽  
Vol 309 (10) ◽  
pp. E852-E860 ◽  
Author(s):  
Liliya M. Yamaleyeva ◽  
Mark C. Chappell ◽  
K. Bridget Brosnihan ◽  
Lauren Anton ◽  
David L. Caudell ◽  
...  
Keyword(s):  
Low Dose ◽  
Expression Patterns ◽  
Ang Ii ◽  
Chorionic Villi ◽  
Angiotensin Converting Enzyme 2 ◽  
Predominant Form ◽  
Pooled Samples ◽  
In Pregnancy

The role of the endogenous apelin system in pregnancy is not well understood. Apelin's actions in pregnancy are further complicated by the expression of multiple forms of the peptide. Using radioimmunoassay (RIA) alone, we established the expression of apelin content in the chorionic villi of preeclamptic (PRE) and normal pregnant women (NORM) at 36–38 wk of gestation. Total apelin content was lower in PRE compared with NORM chorionic villi (49.7 ± 3.4 vs. 72.3 ± 9.8 fmol/mg protein; n = 20–22) and was associated with a trend for lower preproapelin mRNA in the PRE. Further characterization of apelin isoforms by HPLC-RIA was conducted in pooled samples from each group. The expression patterns of apelin peptides in NORM and PRE villi revealed little or no apelin-36 or apelin-17. Pyroglutamate apelin-13 [(Pyr1)-apelin-13] was the predominant form of the peptide in NORM and PRE villi. Angiotensin-converting enzyme 2 (ACE2) activity was higher in PRE villi (572.0 ± 23.0 vs. 485.3 ± 24.8 pmol·mg−1·min−1; n = 18–22). A low dose of ANG II (1 nM; 2 h) decreased apelin release in NORM villous explants that was blocked by the ANG II receptor 1 (AT1) antagonist losartan. Moreover, losartan enhanced apelin release above the 2-h baseline levels in both NORM and PRE villi ( P < 0.05). In summary, these studies are the first to demonstrate the lower apelin content in human placental chorionic villi of PRE subjects using quantitative RIA. (Pyr1)-apelin-13 is the predominant form of endogenous apelin in the chorionic villi of NORM and PRE. The potential mechanism of lower apelin expression in the PRE villi may involve a negative regulation of apelin by ANG II.

scholarly journals Estrogen-Responsive Genes Overlap with Triiodothyronine-Responsive Genes in a Breast Carcinoma Cell Line

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Nancy Bueno Figueiredo ◽  
Sílvia Helena Cestari ◽  
Sandro José Conde ◽  
Renata Azevedo Melo Luvizotto ◽  
Maria Teresa De Sibio ◽  
...  
Keyword(s):  
Breast Carcinoma ◽  
Dna Microarrays ◽  
Expression Patterns ◽  
Breast Adenocarcinoma ◽  
Breast Carcinoma Cell Line ◽  
Expression Of Genes ◽  
Adenocarcinoma Cells ◽  
Pericentriolar Material ◽  
Mcf 7

It has been well established that estrogen plays an important role in the progression and treatment of breast cancer. However, the role of triiodothyronine (T3) remains controversial. We have previously shown its capacity to stimulate the development of positive estrogen receptor breast carcinoma, induce the expression of genes (PR, TGF-alpha) normally stimulated by estradiol (E2), and suppress genes (TGF-beta) normally inhibited by E2. Since T3regulates growth hormones, metabolism, and differentiation, it is important to verify its action on other genes normally induced by E2. Therefore, we used DNA microarrays to compare gene expression patterns in MCF-7 breast adenocarcinoma cells treated with E2and T3. Several genes were modulated by both E2and T3in MCF-7 cells (Student’st-test,P<0.05). Specifically, we found eight genes that were differentially expressed after treatment with both E2and T3, includingamphiregulin, fibulin 1, claudin 6, pericentriolar material 1, premature ovarian failure 1B, factor for adipocyte differentiation-104, sterile alpha motif domain containing 9, and likely ortholog of rat vacuole membrane protein 1(fold change > 2.0, pFDR < 0.05). We confirmed our microarray results by real-time PCR. Our findings reveal that certain genes in MCF-7 cells can be regulated by both E2and T3.

Sign in / Sign up

Export Citation Format

Share Document