Abstract：
:The binding of epidermal growth factor (EGF) to EGF receptor (EGFR) stimulates cell mitogenesis and survival through various signalling cascades. EGF also stimulates rapid EGFR endocytosis and its eventual degradation in lysosomes. The immediate events induced by ligand binding include receptor dimerization, activation of intrinsic tyrosine kinase and autophosphorylation. However, in spite of intensified efforts, the results regarding the roles of these events in EGFR signalling and internalization is still very controversial. In this study, we constructed a chimeric EGFR by replacing its extracellular domain with leucine zipper (LZ) and tagged a green fluorescent protein (GFP) at its C-terminus. We showed that the chimeric LZ-EGFR-GFP was constitutively dimerized. The LZ-EGFR-GFP dimer autophosphorylated each of its five well-defined C-terminal tyrosine residues as the ligand-induced EGFR dimer does. Phosphorylated LZ-EGFR-GFP was localized to both the plasma membrane and endosomes, suggesting it is capable of endocytosis. We also showed that LZ-EGFR-GFP activated major signalling proteins including Src homology collagen-like (Shc), extracellular signal-regulated kinase (ERK) and Akt. Moreover, LZ-EGFR-GFP was able to stimulate cell proliferation. These results indicate that non-ligand induced dimerization is sufficient to activate EGFR and initiate cell signalling and EGFR endocytosis. We conclude that receptor dimerization is a critical event in EGF-induced cell signalling and EGFR endocytosis.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Kourouniotis G,Wang Y,Pennock S,Chen X,Wang Zdoi
10.3390/ijms17081200subject
Has Abstractpub_date
2016-07-25 00:00:00issue
8issn
1422-0067pii
ijms17081200journal_volume
17pub_type
杂志文章abstract：:Serine protease dipeptidyl peptidase 4 (DPP-4) is involved in self/non-self-recognition and insulin sensitivity. DPP-4 inhibitors are conventional choices for diabetic treatment; however, side effects such as headache, bronchus infection, and nasopharyngitis might affect the daily lives of diabetic patients. Notably, ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20030530
更新日期：2019-01-27 00:00:00
abstract：:Soluble receptors are widely understood to be freestanding moieties formed via cleavage from their membrane-bound counterparts. They have unique structures, are found among various receptor families, and have intriguing mechanisms of generation and release. Soluble receptors' ability to exhibit pleiotropic action by r...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms22031108
更新日期：2021-01-23 00:00:00
abstract：:In the central nervous system omega-3 fatty acids modulate cell signaling and affect dopaminergic and serotonergic pathways. On this basis, a new application for omega-3 fatty acids has been proposed, concerning the treatment of several psychiatric disorders. The present article is an update of a previous systematic r...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20215257
更新日期：2019-10-23 00:00:00
abstract：:Cynoglossus semilaevis is an important economic fish species and has long been cultivated in China. Since the completion of its genome and transcriptome sequencing, genes relating to C. semilaevis development have been extensively studied. R-spondin 3 (Rspo3) is a member of the R-spondin family. It plays an important ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms19071915
更新日期：2018-06-29 00:00:00
abstract：:With the avalanche of biological sequences generated in the postgenomic age, molecular science is facing an unprecedented challenge, i.e., how to timely utilize the huge amount of data to benefit human beings. Stimulated by such a challenge, a rapid development has taken place in molecular science, particularly in the...
journal_title：International journal of molecular sciences
pub_type： 社论
doi：10.3390/ijms151120072
更新日期：2014-11-04 00:00:00
abstract：:The insulin signaling (IIS) pathway plays an important role in the metabolism, growth, development, reproduction, and longevity of an organism. As a key member of the IIS pathway, insulin-like growth factor binding proteins (IGFBPs) are widely distributed a family in invertebrates and vertebrates that are critical in ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms22031056
更新日期：2021-01-21 00:00:00
abstract：:The present study investigated the expression and clinical role of hyaluronan synthases (HAS1-3) and hyaluronidases (Hyal1-3) in serous ovarian carcinoma. HAS and HYAL mRNA expression was analyzed in 97 tumors (61 effusions, 27 primary carcinomas, 9 solid metastases) using PCR and further studied for association with ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms131012925
更新日期：2012-10-10 00:00:00
abstract：:Pompe disease is a glycogen storage disease caused by a deficiency in acid α-glucosidase (GAA), a hydrolase necessary for the degradation of lysosomal glycogen. This deficiency in GAA results in muscle and neuronal glycogen accumulation, which causes respiratory insufficiency. Pompe disease mouse models provide a mean...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21062256
更新日期：2020-03-24 00:00:00
abstract：:Aptamers are nucleic acid analogues of antibodies with high affinity to different targets, such as cells, viruses, proteins, inorganic materials, and coenzymes. Empirical approaches allow the design of in vitro aptamers that bind particularly to a target molecule with high affinity and selectivity. Theoretical methods...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21228420
更新日期：2020-11-10 00:00:00
abstract：:A new approach for encoding DNA sequences as input for DNA sequence analysis is proposed using the error correction coding theory of communication engineering. The encoder was designed as a convolutional code model whose generator matrix is designed based on the degeneracy of codons, with a codon treated in the model ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms14048393
更新日期：2013-04-16 00:00:00
abstract：:Chemerin (CHEM) may act as an important link integrating energy homeostasis and reproductive functions of females, and its actions are mediated by three receptors: chemokine-like receptor 1 (CMKLR1), G protein-coupled receptor 1 (GPR1), and C-C motif chemokine receptor-like 2 (CCRL2). The aim of the current study was ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20163887
更新日期：2019-08-09 00:00:00
abstract：:Senescence is the final stage of leaf development which is accompanied by highly coordinated and complicated reprogramming of gene expression. Genetic manipulation of leaf senescence in major crops including wheat has been shown to be able to increase stress tolerance and grain yield. NAC(No apical meristem (NAM), ATA...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21207672
更新日期：2020-10-16 00:00:00
abstract：:Analbuminemia is a rare autosomal recessive disorder manifested by the absence, or severe reduction, of circulating serum albumin (ALB). We report here a new case diagnosed in a 45 years old man of Southwestern Asian origin, living in Switzerland, on the basis of his low ALB concentration (0.9 g/L) in the absence of r...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms12117314
更新日期：2011-01-01 00:00:00
abstract：BACKGROUND:The alkaloid 8-hydroxyquinoline (8HQ) is well-known for various biological activities, including antioxidant effects and especially for the formation of coordination complexes with various transition metals, such as iron, amongst others. Therefore, 8HQ was extensively explored as a promising antineurodegener...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms19123917
更新日期：2018-12-07 00:00:00
abstract：:The cause of inflammatory bowel disease (IBD) is still unknown, but there is growing evidence that environmental factors such as epigenetic changes can contribute to the disease etiology. The aim of this study was to identify newly hypermethylated genes in ulcerative colitis (UC) using a genome-wide DNA methylation ap...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms17081291
更新日期：2016-08-09 00:00:00
abstract：:Glioblastoma multiforme (GBM) is the most common and aggressive primary brain tumor featuring rapid cell proliferation, treatment resistance, and tumor relapse. This is largely due to the coexistence of heterogeneous tumor cell populations with different grades of differentiation, and in particular, to a small subset ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms20153824
更新日期：2019-08-05 00:00:00
abstract：:Cisplatin is ranked as one of the most powerful and commonly prescribed anti-tumor chemotherapeutic agents which improve survival in many solid tumors including non-small cell lung cancer. However, the treatment of advanced lung cancer is restricted due to chemotherapy resistance. Here, we developed and investigated s...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20051125
更新日期：2019-03-05 00:00:00
abstract：:Molecular dissection of hepatocellular adenomas has brought forward a diversity of well-defined entities. Their distinction is important for routine practice, since prognosis is tightly related to the individual subgroup. Very recent activity has generated new details on the molecular background of hepatocellular aden...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms160920994
更新日期：2015-09-02 00:00:00
abstract：:Ultraviolet radiation (UV) is a major causative factor of DNA damage, inflammatory responses, reactive oxygen species (ROS) generation and a turnover of various cutaneous lesions resulting in skin photoaging. The purpose of this study is to investigate the protective effect of protocatechuic aldehyde (PA), which is a ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21134619
更新日期：2020-06-29 00:00:00
abstract：:Fibrotic disease, which is implicated in almost half of all deaths worldwide, is the result of an uncontrolled wound healing response to injury in which tissue is replaced by deposition of excess extracellular matrix, leading to fibrosis and loss of organ function. A plethora of genome-wide association studies, microa...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21228590
更新日期：2020-11-14 00:00:00
abstract：:Sertoli cells are somatic supporting cells in spermatogenic niche and play critical roles in germ cell development, but it is yet to be understood how epigenetic modifiers regulate Sertoli cell development and contribution to spermatogenesis. BRG1 (Brahma related gene 1) is a catalytic subunit of the mammalian SWI/SNF...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21124358
更新日期：2020-06-19 00:00:00
abstract：:Saturated aqueous solutions of various common salts were examined for their effect on aqueous aldol reactions catalysted by a highly active C(2)-symmetric diprolinamide organocatalyst developed in our laboratory. With respect to the aldol reaction between cyclohexanone and 4-nitrobenzaldehyde, deionised water was alwa...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms12129083
更新日期：2011-01-01 00:00:00
abstract：:A whole-bacterium-based SELEX (Systematic Evolution of Ligands by Exponential Enrichment) procedure was adopted in this study for the selection of an ssDNA aptamer that binds to Bifidobacterium bifidum. After 12 rounds of selection targeted against B. bifidum, 30 sequences were obtained and divided into seven families...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms18050883
更新日期：2017-04-25 00:00:00
abstract：:Dry fruits consist of two types, dehiscent and indehiscent, whereby the fruit is splitting open or remains closed at maturity, respectively. The seed, the dispersal unit (DU) of dehiscent fruits, is composed of three major parts, the embryo and the food reserve, encapsulated by the maternally-derived organ, the seed c...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21218024
更新日期：2020-10-28 00:00:00
abstract：:Herbivore-induced plant volatiles (HIPVs) play important ecological roles in defense against stresses. In contrast to model plants, reports on HIPV formation and function in crops are limited. Tea (Camellia sinensis) is an important crop in China. α-Farnesene is a common HIPV produced in tea plants in response to diff...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20174151
更新日期：2019-08-25 00:00:00
abstract：:Lifestyle-related disorders, such as the metabolic syndrome, have become a primary risk factor for the development of liver pathologies that can progress from hepatic steatosis, hepatic insulin resistance, steatohepatitis, fibrosis and cirrhosis, to the most severe condition of hepatocellular carcinoma (HCC). While th...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms19030921
更新日期：2018-03-20 00:00:00
abstract：:The rising demand for powerful oncolytic virotherapy agents has led to the identification of Maraba virus, one of the most potent oncolytic viruses from Rhabdoviridae family which displays high selectivity for killing malignant cells and low cytotoxicity in normal cells. Although the virus is readied to be used for cl...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20030580
更新日期：2019-01-29 00:00:00
abstract：:Interstitial telomeric sequences (ITSs) are short stretches of telomeric-like repeats (TTAGGG)n at nonterminal chromosomal sites. We previously demonstrated that, in the genomes of primates and rodents, ITSs were inserted during the repair of DNA double-strand breaks. These conclusions were derived from sequence compa...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21082838
更新日期：2020-04-18 00:00:00
abstract：:Pancreatic Ductal Adenocarcinoma (PDAC) is one of the most lethal cancers due to a high chemoresistance and poor vascularization, which results in an ineffective systemic therapy. PDAC is characterized by a high intratumoral pressure, which is not captured by current 2D and 3D in vitro models. Here, we demonstrated a ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20184647
更新日期：2019-09-19 00:00:00
abstract：:Niemann-Pick disease type C (NPC) is a recessive hereditary disease caused by mutation of the NPC1 or NPC2 gene. It is characterized by abnormality of cellular cholesterol trafficking with severe neuronal and hepatic injury. In this study, we investigated the potential of glycoprotein nonmetastatic melanoma protein B ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms22010452
更新日期：2021-01-05 00:00:00
