scholarly journals Expression and Clinical Significance of YAP, TAZ, and AREG in Hepatocellular Carcinoma

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Su-xia Han ◽  
E. Bai ◽  
Gui-hua Jin ◽  
Chen-chen He ◽  
Xi-jing Guo ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Immunohistochemical Staining ◽  
Target Gene ◽  
Hippo Pathway ◽  
Prognostic Indicator ◽  
Binding Motif ◽  
Direct Target Gene ◽  
Epidermal Growth ◽  
Direct Target

Purpose. Yes-associated protein (YAP) and PDZ-binding motif (TAZ) are two important effectors of Hippo pathway controlling the balance of organ size and carcinogenesis. Amphiregulin (AREG) is a member of the epidermal growth factor family, a direct target gene of YAP and TAZ. The role of these proteins in hepatocellular carcinoma (HCC) is unclear.Methods. The expression of YAP, TAZ, and AREG in HCC was analyzed by immunohistochemical staining. The level of secreted serum AREG was also assayed by enzyme-linked immunosorbent (ELISA) assay.Results. YAP, TAZ, and AREG were expressed in 69.2% (27/39), 66.7% (26/39), and 61.5% (24/39) of HCC patients. The expression of YAP was significantly correlated with Edmondson stage (P>0.05), serum AFP level (P>0.05), and HCC prognosis (P>0.05). AREG expression was also significantly correlated with Edmondson stage (P>0.05) and serum AFP level (P>0.05). In addition, the expression of serum AREG was higher than serum AFP in HCC patients. Further multivariate analysis showed that YAP expression was an independent prognostic factor that significantly affected the overall survival of HCC patients.Conclusions. YAP maybe an independent prognostic indicator for HCC patients and serum AREG may be a serological biomarker of HCC.

scholarly journals Milk Exosome-Derived MicroRNA-2478 Suppresses Melanogenesis through the Akt-GSK3β Pathway

Cells ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 2848
Author(s):  
In-Seon Bae ◽  
Sang Hoon Kim
Keyword(s):  
Target Gene ◽  
Melanoma Cells ◽  
Biological Processes ◽  
Melanin Production ◽  
Small Noncoding Rnas ◽  
Direct Target Gene ◽  
Direct Targeting ◽  
Direct Target ◽  
Melanin Contents

Exosomes participate in intercellular communication by transferring molecules from donor to recipient cells. Exosomes are found in various body fluids, including blood, urine, cerebrospinal fluid and milk. Milk exosomes contain many endogenous microRNA molecules. MicroRNAs are small noncoding RNAs and have important roles in biological processes. The specific biological functions of milk exosomes are not well understood. In this study, we investigated the effects of milk exosomes on melanin production in melanoma cells and melanocytes. We found that milk exosomes decreased melanin contents, tyrosinase activity and the expression of melanogenesis-related genes in melanoma cells and melanocytes. Bovine-specific miR-2478 in exosomes inhibited melanin production. We found that Rap1a is a direct target gene of miR-2478 in melanoma cells and melanocytes. MiR-2478 overexpression decreased Rap1a expression, which led to downregulated melanin production and expression of melanogenesis-related genes. Inhibition of Rap1a expression decreased melanogenesis through the Akt-GSK3β signal pathway. These results support the role of miR-2478 derived from milk exosomes as a regulator of melanogenesis through direct targeting of Rap1a. These results show that milk exosomes could be useful cosmeceutical ingredients to improve whitening.

scholarly journals Identification ofTDRD1as a direct target gene ofERGin primary prostate cancer

2013 ◽  
Vol 133 (2) ◽  
pp. 335-345 ◽  
Author(s):  
Joost L. Boormans ◽  
Hanneke Korsten ◽  
Angelique J.C. Ziel-van der Made ◽  
Geert J.L.H. van Leenders ◽  
Carola V. de Vos ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Target Gene ◽  
Primary Prostate Cancer ◽  
Direct Target Gene ◽  
Direct Target

ZNF16 (HZF1) promotes erythropoiesis and megakaryocytopoiesis via regulation of the c-KIT gene

2014 ◽  
Vol 458 (1) ◽  
pp. 171-183 ◽  
Author(s):  
Jing Chen ◽  
Xiao-Bo Li ◽  
Rui Su ◽  
Li Song ◽  
Fang Wang ◽  
...  
Keyword(s):  
Progenitor Cells ◽  
Target Gene ◽  
Megakaryocytic Differentiation ◽  
Kit Gene ◽  
Direct Target Gene ◽  
Direct Target

The present study demonstrated that ZNF16 (HZF1) plays an important role in erythroid and megakaryocytic differentiation of human haematopoietic stem/progenitor cells, identified and validated c-KIT as a direct target gene of ZNF16, and demonstrated that ZNF16 functions via its regulation on the c-Kit/c-Raf/MEK/ERK/c-Jun/HEY1/GATA1 cascade.

scholarly journals miR-34a Inhibits Cell Proliferation by Targeting SATB2 in Hepatocellular Carcinoma

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Gang Wu ◽  
Zhixi Li ◽  
Youyu Wang ◽  
Xueming Ju ◽  
Rui Huang
Keyword(s):  
Hepatocellular Carcinoma ◽  
Cell Proliferation ◽  
Hepg2 Cells ◽  
Hepatoma Cell ◽  
Luciferase Reporter ◽  
Hepatoma Cell Line ◽  
Novel Therapy ◽  
The Third ◽  
Direct Target

Hepatocellular carcinoma (HCC) is the most common type of malignancy of the liver and has been reported as the third most frequent cause of cancer associated death worldwide. Accumulating evidence showed that the expression of miR-34a was abnormal in HCC patients; however, the role of miR-34a in HCC is not clear. In this study, we have observed low expression of the miR-34a in both HCC tissues and hepatoma cell line as compared to normal control. Further to investigate the role of miR-34a in HCC development, HepG2 cells were transfected with miR-34a mimic. Following transfection, miR-34a expression was significantly increased, which further repressed proliferation of HepG2 cells. Bioinformatics, Luciferase Reporter, RT-qPCR, and western blotting assays indicated that special AT-rich sequence-binding protein-2 (SATB2) is a direct target of miR-34a in HCC cells. There was a negative correlation between the expression levels of SATB2 and miR-34a. Investigation into the molecular mechanism indicated that miR-34a regulated cell proliferation through inhibiting SATB2. Therefore, the results of the present study may improve understanding regarding the role of miR-34a in regulating cell proliferation and contribute to the development of novel therapy of HCC.

scholarly journals The Receptor Tyrosine Kinase EphA2 Is a Direct Target Gene of Hypermethylated in Cancer 1 (HIC1)

2011 ◽  
Vol 287 (8) ◽  
pp. 5366-5378 ◽  
Author(s):  
Bénédicte Foveau ◽  
Gaylor Boulay ◽  
Sébastien Pinte ◽  
Capucine Van Rechem ◽  
Brian R. Rood ◽  
...  
Keyword(s):  
Tyrosine Kinase ◽  
Receptor Tyrosine Kinase ◽  
Target Gene ◽  
Direct Target Gene ◽  
Direct Target

Yap, Taz and Areg Expression in Eighth Cranial Nerve Schwannoma

2017 ◽  
Vol 32 (3) ◽  
pp. 319-324 ◽  
Author(s):  
Alessandro Martini ◽  
Gino Marioni ◽  
Elisabetta Zanoletti ◽  
Rocco Cappellesso ◽  
Roberto Stramare ◽  
...  
Keyword(s):  
Cranial Nerve ◽  
Preliminary Investigation ◽  
Binding Motif ◽  
Transcriptional Coactivator ◽  
Eighth Cranial Nerve ◽  
Non Invasive ◽  
Contrast Enhanced ◽  
Direct Target Gene ◽  
Direct Target ◽  
Cranial Nerve Viii

Background Although the diagnosis and treatment of eighth cranial nerve (VIII CN) schwannoma (acoustic neuroma) has improved over the years, no factors capable of predicting tumor growth have been identified as yet. This study is a preliminary investigation of the expression in sporadic VIII CN schwannomas of Yes-associated protein (YAP), transcriptional coactivator with PDZ-binding motif (TAZ), and amphiregulin (AREG), a direct target gene of YAP and TAZ. The expression of YAP, TAZ and AREG was correlated with the volumetric dimensions of tumors on contrast-enhanced magnetic resonance imaging (ceMRI). Methods YAP, TAZ and AREG expression was assessed immunohistochemically in surgical specimens of 36 consecutive sporadic VIII CN schwannomas. 3D reconstructions of the tumors and their corresponding volumes in cm3 were obtained from measurements on ceMRI images using the OsiriX® software. Results We found a significant direct correlation between TAZ expression and VIII CN schwannoma volumes on latest preoperative ceMRI (p<0.0003). Mean TAZ expression was also significantly higher in VIII CN schwannomas with a volume ≥2.1 cm3 than in those with a volume <2.1 cm3 (p<0.0018). No significant correlations emerged for YAP or AREG expression and VIII CN schwannoma volume. Conclusions The immunohistochemical expression of TAZ (but not YAP or AREG) correlated significantly with schwannoma volume measured on ceMRI. Further investigations are needed to identify the biological factors influencing tumor proliferation (ideally secreted proteins like AREG) that might be detected using non-invasive approaches (i.e., blood samples).

scholarly journals Scavenger Chemokine (CXC Motif) Receptor 7 (CXCR7) Is a Direct Target Gene ofHIC1(Hypermethylated in Cancer 1)

2009 ◽  
Vol 284 (31) ◽  
pp. 20927-20935 ◽  
Author(s):  
Capucine Van Rechem ◽  
Brian R. Rood ◽  
Majid Touka ◽  
Sébastien Pinte ◽  
Mathias Jenal ◽  
...  
Keyword(s):  
Target Gene ◽  
Direct Target Gene ◽  
Direct Target

scholarly journals YTHDF2, a protein repressed by miR-145, regulates proliferation, apoptosis and migration in ovarian cancer cells

2020 ◽  
Author(s):  
Jie Li ◽  
Lei Wu ◽  
Meili Pei ◽  
Yun Zhang
Keyword(s):  
Ovarian Cancer ◽  
Feedback Loop ◽  
Target Gene ◽  
Epigenetic Modification ◽  
Ovarian Cancer Cells ◽  
Direct Target Gene ◽  
Direct Target ◽  
And Migration ◽  
Cancer Tissues ◽  
Proliferation And Migration

Abstract RNA methylation can reverse the methylation modification at RNA level, which is a kind of extremely important epigenetic modification. YTHDF2, as a reader of m6A modification, the function and mechanisms of in epithelial ovarian cancer(EOC) have not been elucidated so far. In this study, we demonstrated that YTHDF2 was significantly upregulated in EOC tissues compared with normal ovarian tissues, further function studies confirmed that YTHDF2 significantly promoted the proliferation and migration of EOC cell lines, and reduced the global mRNA m6A levels. Next, we found that the expression levels of miR-145 and YTHDF2 were inversely correlated in ovarian cancer tissues and cells, and YTHDF2 is the direct target gene of miR-145. Interestingly, there was a crucial crosstalk between miR-145 and YTHDF2 via a double-negative feedback loop. Overexpression of YTHDF2 rescues miR-145-induced reduction of proliferation and migration in EOC cells. To conclude, YTHDF2 and miR-145, as two crucial m6A regulators, are involved in the progression of EOC by indirectly modulating m6A levels. In view of these promising results, YTHDF2 and miR-145 may provide new insights into the carcinogenesis and new potential therapeutic targets for EOC.

Sign in / Sign up

Export Citation Format

Share Document