scholarly journals Ectopic expression of GmZAT4, a putative C2H2-type zinc finger protein, enhances PEG and NaCl stress tolerances in Arabidopsis thaliana

3 Biotech ◽  
2019 ◽  
Vol 9 (5) ◽  
Author(s):  
Zhaoxia Sun ◽  
Ronghua Liu ◽  
Bin Guo ◽  
Kesheng Huang ◽  
Li Wang ◽  
...  
2014 ◽  
Vol 86 (3) ◽  
pp. 237-253 ◽  
Author(s):  
Guoliang Han ◽  
Mingjie Wang ◽  
Fang Yuan ◽  
Na Sui ◽  
Jie Song ◽  
...  

Development ◽  
2011 ◽  
Vol 138 (16) ◽  
pp. 3591-3591 ◽  
Author(s):  
Seiji Takeda ◽  
Noritaka Matsumoto ◽  
Kiyotaka Okada

2020 ◽  
Vol 3 (1) ◽  
pp. 504-511
Author(s):  
Le Thi Tuyet Cham ◽  
Vu Ngoc Thang ◽  
Tran Anh Tuan ◽  
Vu Thi Thuy Hang

The C2H2 zinc finger protein ZAT12 has been classified as a plant core abiotic stress response gene in the early  response to multiple stresses. ZAT12 links the iron deficiency and oxidative stress responses through the direct interaction with/and negative regulation of a central regulator - FIT. For further research on the regulation of the ZAT12 protein in planta, a huge quantity of ZAT12 proteins is required to inject into mice for the generation of ZAT12 antiserum. In this study, the gene encoding the ZAT12 protein from Arabidopsis thaliana was cloned into the expression vector - pETBlue-2 and then overexpressed in E. coli T7. A high expression level was indicated by SDS-PAGE. Immunoblot demonstrated successful expression using a bacterial expression system.


2013 ◽  
Vol 35 (6) ◽  
pp. 1863-1871 ◽  
Author(s):  
Muhammad Kamran Qureshi ◽  
Neerakkal Sujeeth ◽  
Tsanko S. Gechev ◽  
Jacques Hille

2009 ◽  
Vol 2 (2) ◽  
pp. 357-367 ◽  
Author(s):  
Elke Ströher ◽  
Xin-Jia Wang ◽  
Nils Roloff ◽  
Peter Klein ◽  
Arne Husemann ◽  
...  

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Chunfang Tao ◽  
Juan Luo ◽  
Jun Tang ◽  
Danfeng Zhou ◽  
Shujun Feng ◽  
...  

Abstract Background Zinc-finger protein 471 (ZNF471) is a member of the Krüppel-associated box domain zinc finger protein (KRAB-ZFP) family. ZNF471 is methylated in squamous cell carcinomas of tongue, stomach and esophageal. However, its role in breast carcinogenesis remains elusive. Here, we studied its expression, functions, and molecular mechanisms in breast cancer. Methods We examined ZNF471 expression by RT-PCR and qPCR. Methylation-specific PCR determined its promoter methylation. Its biological functions and related molecular mechanisms were assessed by CCK-8, clonogenicity, wound healing, Transwell, nude mice tumorigenicity, flow cytometry, BrdU-ELISA, immunohistochemistry and Western blot assays. Results ZNF471 was significantly downregulated in breast cell lines and tissues due to its promoter CpG methylation, compared with normal mammary epithelial cells and paired surgical-margin tissues. Ectopic expression of ZNF471 substantially inhibited breast tumor cell growth in vitro and in vivo, arrested cell cycle at S phase, and promoted cell apoptosis, as well as suppressed metastasis. Further knockdown of ZNF471 verified its tumor-suppressive effects. We also found that ZNF471 exerted its tumor-suppressive functions through suppressing epithelial-mesenchymal transition, tumor cell stemness and AKT and Wnt/β-catenin signaling. Conclusions ZNF471 functions as a tumor suppressor that was epigenetically inactivated in breast cancer. Its inhibition of AKT and Wnt/β-catenin signaling pathways is one of the mechanisms underlying its anti-cancer effects.


Development ◽  
2002 ◽  
Vol 129 (15) ◽  
pp. 3645-3656 ◽  
Author(s):  
Ryan B. Green ◽  
Victor Hatini ◽  
Katherine A. Johansen ◽  
Xue-Jun Liu ◽  
Judith A. Lengyel

Elongation of the Drosophila embryonic hindgut epithelium occurs by a process of oriented cell rearrangement requiring the genes drumstick (drm) and lines (lin). The elongating hindgut becomes subdivided into domains – small intestine, large intestine and rectum – each characterized by a specific pattern of gene expression dependent upon normal drm and lin function. We show that drm encodes an 81 amino acid (10 kDa) zinc finger protein that is a member of the Odd-skipped family. drm expression is localized to the developing midgut-hindgut junction and is required to establish the small intestine, while lin is broadly expressed throughout the gut primordium and represses small intestine fate. lin is epistatic to drm, suggesting a model in which localized expression of drm blocks lin activity, thereby allowing small intestine fate to be established. Further supporting this model, ectopic expression of Drm throughout the hindgut produces a lin phenotype. Biochemical and genetic data indicate that the first conserved zinc finger of Drm is essential for its function. We have thus defined a pathway in which a spatially localized zinc finger protein antagonizes a globally expressed protein, thereby leading to specification of a domain (the small intestine) necessary for oriented cell rearrangement.


Development ◽  
1997 ◽  
Vol 124 (6) ◽  
pp. 1227-1237 ◽  
Author(s):  
J.L. Mullor ◽  
M. Calleja ◽  
J. Capdevila ◽  
I. Guerrero

In the Drosophila wing imaginal disc, the Hedgehog (Hh) signal molecule induces the expression of decapentaplegic (dpp) in a band of cells abutting the anteroposterior (A/P) compartment border. It has been proposed that Dpp organizes the patterning of the entire wing disc. We have tested this proposal by studying the response to distinct levels of ectopic expression of Hh and Dpp, using the sensory organ precursors (SOPs) of the wing and notum and the presumptive wing veins as positional markers. Here, we show that Dpp specifies the position of most SOPs in the notum and of some of them in the wing. Close to the A/P compartment border, however, SOPs are specified by Hh rather than by Dpp alone. We also show that late signaling by Hh, after setting up dpp expression, is responsible for the formation of vein 3 and the scutellar region, and also for the determination of the distance between veins 3 and 4. One of the genes that mediates the Hh signal is the zinc-finger protein Cubitus interruptus (Ci). These results indicate that Hh has a Dpp-independent morphogenetic effect in the region of the wing disc near the A/P border.


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