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IGF1R cancer

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https://www.readbyqxmd.com/read/29331887/idh1r132h-promotes-malignant-transformation-of-benign-prostatic-epithelium-by-dysregulating-micrornas-involvement-of-igf1r-akt-stat3-signaling-pathway
#1
Lili Zhang, Mei Qi, Tingting Feng, Jing Hu, Lin Wang, Xinjun Li, Wei Gao, Hui Liu, Meng Jiao, Zhen Wu, Xinnuo Bai, Yifan Bie, Long Liu, Bo Han
Risk stratification using molecular features could potentially help distinguish indolent from aggressive prostate cancer (PCa). Mutations in isocitrate dehydrogenase (IDH) acquire an abnormal enzymatic activity, resulting in the production of 2-hydroxyglutarate and alterations in cellular metabolism, histone modification, and DNA methylation. Mutant IDH1 has been identified in various human malignancies, and IDH1R132H constituted the vast majority of mutational events of IDH1. Most recent studies suggested that IDH1 mutations define a methylator subtype in PCa...
January 11, 2018: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/29330302/controlled-dimerization-of-insulin-like-growth-factor-1-and-insulin-receptors-reveal-shared-and-distinct-activities-of-holo-and-hybrid-receptors
#2
Jingci Chen, Alison M Nagle, Yu-Fen Wang, David N Boone, Adrian V Lee
Breast cancer development and progression is influenced by insulin-like growth factor 1 (IGF1R) and insulin receptor (InsR) signaling that drive cancer phenotypes such as cell growth, proliferation, and migration. IGF1R and InsR form IGF1R/InsR hybrid receptors (HybR) consisting of one molecule of IGF1R and one molecule of InsR. The specific signaling and functions of HybR are largely unknown as HybR is activated by both IGF1 and insulin, and no cellular system expresses HybR in the absence of holo-IGF1R or holo-InsR...
January 12, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29320557/high-ahr-expression-in-breast-tumors-correlates-with-expression-of-genes-from-several-signaling-pathways-namely-inflammation-and-endogenous-tryptophan-metabolism
#3
Sophie Vacher, Patrice Castagnet, Walid Chemlali, François Lallemand, Didier Meseure, Marc Pocard, Ivan Bieche, Martine Perrot-Applanat
Increasing epidemiological and animal experimental data provide substantial support for the role of aryl hydrocarbon receptor (AhR) in mammary tumorigenesis. The effects of AhR have been clearly demonstrated in rodent models of breast carcinogenesis and in several established human breast cancer cell lines following exposure to AhR ligands or AhR overexpression. However, relatively little is known about the role of AhR in human breast cancers. AhR has always been considered to be a regulator of toxic and carcinogenic responses to environmental contaminants such as TCDD (dioxin) and benzo[a]pyrene (BaP)...
2018: PloS One
https://www.readbyqxmd.com/read/29290648/relation-of-the-igf-igf1r-system-to-autophagy-in-colitis-and-colorectal-cancer
#4
REVIEW
Ferenc Sipos, Hajnal Székely, Imre Dániel Kis, Zsolt Tulassay, Györgyi Műzes
Metabolic syndrome (MetS), as a chronic inflammatory disorder has a potential role in the development of inflammatory and cancerous complications of the colonic tissue. The interaction of DNA damage and inflammation is affected by the insulin-like growth factor 1 receptor (IGF1R) signaling pathway. The IGF1R pathway has been reported to regulate autophagy, as well, but sometimes through a bidirectional context. Targeting the IGF1R-autophagy crosstalk could represent a promising strategy for the development of new antiinflammatory and anticancer therapies, and may help for subjects suffering from MetS who are at increased risk of colorectal cancer...
December 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29285186/function-of-insulin-like-growth-factor-1-receptor-in-cancer-resistance-to-chemotherapy
#5
Jingsheng Yuan, Zhijie Yin, Kaixiong Tao, Guobing Wang, Jinbo Gao
Drug resistance is a primary cause of chemotherapeutic failure; however, how this resistance develops is complex. A comprehensive understanding of chemotherapeutic resistance mechanisms may aid in identifying more effective drugs and improve the survival rates of patients with cancer. Insulin-like growth factor 1 receptor (IGF1R), a member of the insulin receptor family, has been extensively assessed for biological activity, and its putative contribution to tumor cell development and progression. Furthermore, researchers have attended to drugs that target IGF1R since IGF1R functions as a membrane receptor...
January 2018: Oncology Letters
https://www.readbyqxmd.com/read/29282682/targeted-therapies-against-growth-factor-signaling-in-breast-cancer
#6
Juan Du, Yu Yu, Jun Zhan, Hongquan Zhang
Breast cancer is the most prevalent female malignancy throughout the world. Conventional treatment strategies for breast cancer consist of chemotherapy, radiation, surgery, chemoradiation, hormone therapy, and targeted therapies. Among them, targeted therapies show advantages to reduce cost and toxicity for being possible for individualized treatments based on the intrinsic subtypes of breast cancer. With deeper understanding of key signaling pathways concerning tumor growth and survival, growth factor-controlled signaling pathways are frequently dysregulated in the development and progression of breast cancer...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29262508/-expression-and-prognostic-significance-of-p-igf1r-in-gastric-cancer
#7
L Ge, J F Zhu, Z Yu, H J Wang
No abstract text is available yet for this article.
December 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/29251331/upregulation-of-igf1-by-tumor-associated-macrophages-promotes-the-proliferation-and-migration-of-epithelial-ovarian-cancer-cells
#8
Li Liu, Xinjing Wang, Xiaoduan Li, Xiaoli Wu, Meiling Tang, Xipeng Wang
Ovarian cancer (OC), of which epithelial ovarian cancer (EOC) is the most common, is the deadliest gynecological tumor because of the difficulties in detection at early stages, and metastasis and chemoresistance at advanced stages. Tumor-associated macrophages (TAMs) differentiate through alternative pathways and play important roles in tumor growth and metastasis. However, the underlying mechanism remains unclear. Here, we established a mouse TAM model using bone marrow monocytes and conditioned medium (CM) of TAMs to culture ID8 mouse EOC cells...
February 2018: Oncology Reports
https://www.readbyqxmd.com/read/29249638/androgen-receptor-overexpression-in-prostate-cancer-in-type-2-diabetes
#9
Stefan Zoltán Lutz, Jörg Hennenlotter, Marcus Oliver Scharpf, Corinna Sailer, Louise Fritsche, Vera Schmid, Konstantinos Kantartzis, Robert Wagner, Rainer Lehmann, Lucia Berti, Andreas Peter, Harald Staiger, Andreas Fritsche, Falko Fend, Tilman Todenhöfer, Arnulf Stenzl, Hans-Ulrich Häring, Martin Heni
OBJECTIVE: While prostate cancer does not occur more often in men with diabetes, survival is markedly reduced in this patient group. Androgen signaling is a known and major driver for prostate cancer progression. Therefore, we analyzed major components of the androgen signaling chain and cell proliferation in relation to type 2 diabetes. METHODS: Tumor content of 70 prostate tissue samples of men with type 2 diabetes and 59 samples of patients without diabetes was quantified by an experienced pathologist, and a subset of 51 samples was immunohistochemically stained for androgen receptor (AR)...
December 5, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29241458/inhibition-of-the-igf-signaling-pathway-reverses-cisplatin-resistance-in-ovarian-cancer-cells
#10
Juan Du, Hui-Rong Shi, Fang Ren, Jing-Lu Wang, Qing-Hua Wu, Xia Li, Rui-Tao Zhang
BACKGROUND: This study was aimed at investigating whether metformin can reverse the resistance of ovarian cancer cells to cisplatin and exploring the underlying mechanism. METHODS: Ovarian cancer cell proliferation in vitro was evaluated using a CCK-8 assay. The resistance index of platinum-resistant ovarian cancer cells was determined and cell cycle and apoptosis rate determined by annexin V/propidium iodide double-staining in CP70 cells. Western blotting was used to determine IGF1, IGF1R, AKT, p-IGF1, p-IGF1R, p-AKT, and MRP2 levels in cells treated with different concentrations of metformin and LY29400, an inhibitor of the insulin-like growth factor pathway...
December 14, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29225160/oncogenic-non-coding-rna-neat1-promotes-the-prostate-cancer-cell-growth-through-the-src3-igf1r-akt-pathway
#11
Wei Xiong, Changkun Huang, Huanghao Deng, Chengzhu Jian, Cong Zen, Kun Ye, Zhaohui Zhong, Xiaokun Zhao, Liang Zhu
Steroid receptor co-activator3 (SRC3) has been known to severe as an androgen receptor (AR) coactivator and is involved in the prostate cancer progression. Non-coding RNA (ncRNA) plays an important role in the cancer progression. However, the mechanism underlying the relationship between ncRNA and AR coactivators is still unclear. Here, we found a ncRNA, Nuclear Enriched Abundant Transcript 1 (NEAT1), was able to interact with SRC3 in the prostate cancer cell lines. NEAT1 can upregulate the AKT phosphorylation via a SRC3/IGF1R pathway...
December 7, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29212519/gper-mediates-the-angiocrine-actions-induced-by-igf1-through-the-hif-1%C3%AE-vegf-pathway-in-the-breast-tumor-microenvironment
#12
Ernestina M De Francesco, Andrew H Sims, Marcello Maggiolini, Federica Sotgia, Michael P Lisanti, Robert B Clarke
BACKGROUND: The G protein estrogen receptor GPER/GPR30 mediates estrogen action in breast cancer cells as well as in breast cancer-associated fibroblasts (CAFs), which are key components of microenvironment driving tumor progression. GPER is a transcriptional target of hypoxia inducible factor 1 alpha (HIF-1α) and activates VEGF expression and angiogenesis in hypoxic breast tumor microenvironment. Furthermore, IGF1/IGF1R signaling, which has angiogenic effects, has been shown to activate GPER in breast cancer cells...
December 6, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/29212217/tmed2-promotes-epithelial-ovarian-cancer-growth
#13
Gong Shi-Peng, Chen Chun-Lin, Wu Huan, Meng Fan-Liang, Chen Yong-Ning, Zhang Ya-Di, Zhang Guang-Ping, Cai Ye-Ping
TMED2 is involved in morphogenesis of the mouse embryo and placenta. We found that expression of TMED2 was higher in epithelial ovarian cancer tissues than normal ovarian tissues. Silencing TMED2 decreased cell proliferation, migration, and invasion. Ectopic expression of TMED2 increased cell proliferation, migration and invasion. Silencing TMED2 inhibited ovarian cancer growth in mice. Silencing TMED2 inhibited IGF2/IGF1R/PI3K/Akt pathway. In agreement, ectopically expressed TMED2 activated IGF2/IGF1R/PI3K/Akt pathway...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29207959/insulin-like-growth-factor-receptor-and-sphingosine-kinase-are-prognostic-and-therapeutic-targets-in-breast-cancer
#14
Aleksandra M Ochnik, Robert C Baxter
BACKGROUND: Targeting the type 1 insulin-like growth factor receptor (IGF1R) in breast cancer remains an ongoing clinical challenge. Oncogenic IGF1R-signaling occurs via activation of PI3K/AKT/MAPK downstream mediators which regulate cell proliferation and protein synthesis. To further understand IGF1R signaling we have investigated the involvement of the oncogenic IGF1R-related sphingosine kinase (SphK) pathway. METHODS: The prognostic (overall survival, OS) and therapeutic (anti-endocrine therapy) co-contribution of IGF1R and SphK1 were investigated using breast cancer patient samples (n = 236) for immunohistochemistry to measure total and phosphorylated IGF1R and SphK1...
December 5, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29200969/inhibition-of-breast-cancer-cell-proliferation-and-tumorigenesis-by-long-non-coding-rna-rpph1-down-regulation-of-mir-122-expression
#15
Yi Zhang, Lili Tang
Background: Recent studies showed that long non-coding RNA (lncRNA) plays an important role in many life activities. RPPH1 is one of the lncRNA genes that are expressed differently between breast cancer and normal tissues by the lncRNA gene chip. Our study was conducted to examine the regulation of lncRNA RPPH1 in breast cancer. Methods: Two cell lines, MCF-7 and MDA-MB-231, were selected to be the research objects in this study; RPPH1 overexpression and knockdown models were established by transforming vectors...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/29200719/anti-cancer-effects-of-polyphenolic-compounds-in-epidermal-growth-factor-receptor-tyrosine-kinase-inhibitor-resistant-non-small-cell-lung-cancer
#16
Hyungmin Jeong, Ai N H Phan, Jong-Whan Choi
Background: Polyphenolic phytochemicals are natural compounds, easily found in fruits and vegetables. Importantly, polyphenols have been intensively studied as excellent antioxidant activity which contributes to anticancer function of the natural compounds. Lung cancer has been reported to mainly account for cancer-related deaths in the world. Moreover, epidermal growth factor receptor tyrosine kinase inhibitor (TKI) resistance is one of the biggest issues in cancer treatment, especially in nonsmall cell lung cancer (NSCLC)...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29198020/identification-of-a-novel-intergenic-mirna-located-between-the-human-ddc-and-cobl-genes-with-a-potential-function-in-cell-cycle-arrest
#17
Mohamad Hussein Hoballa, Bahram M Soltani, Seyed Javad Mowla, Mojgan Sheikhpour, Maryam Kay
Frequent abnormalities in 7p12 locus in different tumors like lung cancer candidate this region for novel regulatory elements. MiRNAs as novel regulatory elements encoded within the human genome are potentially oncomiRs or miR suppressors. Here, we have used bioinformatics tools to search for the novel miRNAs embedded within human chromosome 7p12. A bona fide stem loop (named mirZa precursor) had the features of producing a real miRNA (named miRZa) which was detected through RT-qPCR following the overexpression of its precursor...
December 2, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29190911/acquisition-of-egfr-tki-resistance-and-emt-phenotype-is-linked-with-activation-of-igf1r-nf-%C3%AE%C2%BAb-pathway-in-egfr-mutant-nsclc
#18
Ling Li, Xiajing Gu, Jinnan Yue, Qingnan Zhao, Dacheng Lv, Hongzhuan Chen, Lu Xu
Epithelial-mesenchymal transition (EMT) is clinically associated with acquired resistance to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKI) in non-small cell lung cancers (NSCLC). However, the mechanisms promoting EMT in EGFR TKI-resistant NSCLC have not been fully elucidated. Previous studies have suggested that IGF1R signaling is involved in both acquired EGFR TKI resistance in NSCLC and induction of EMT in some types of tumor. In this study, we further explored the role of the IGF1R signaling in the acquisition of EMT phenotype associated with EGFR TKI resistance in mutant-EGFR NSCLC...
November 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29167573/metformin-transiently-inhibits-colorectal-cancer-cell-proliferation-as-a-result-of-either-ampk-activation-or-increased-ros-production
#19
Angela Mogavero, Maria Valeria Maiorana, Susanna Zanutto, Luca Varinelli, Fabio Bozzi, Antonino Belfiore, Chiara C Volpi, Annunziata Gloghini, Marco A Pierotti, Manuela Gariboldi
Metformin is a widely used and well-tolerated anti-diabetic drug that can reduce cancer risk and improve the prognosis of certain malignancies. However, the mechanism underlying its anti-cancer effect is still unclear. We studied the anti-cancer activity of metformin on colorectal cancer (CRC) by using the drug to treat HT29, HCT116 and HCT116 p53-/- CRC cells. Metformin reduced cell proliferation and migration by inducing cell cycle arrest in the G0/G1 phase. This was accompanied by a sharp decrease in the expression of c-Myc and down-regulation of IGF1R...
November 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29156819/mir-29a-3p-suppresses-cell-proliferation-and-migration-by-downregulating-igf1r-in-hepatocellular-carcinoma
#20
Xiao Wang, Shasha Liu, Ling Cao, Tengfei Zhang, Dongli Yue, Liping Wang, Yu Ping, Qianyi He, Chaoqi Zhang, Meng Wang, Xinfeng Chen, Qun Gao, Dan Wang, Zhen Zhang, Fei Wang, Li Yang, Jieyao Li, Lan Huang, Bin Zhang, Yi Zhang
Hepatocellular carcinoma (HCC), the most common primary tumor of the liver, has a poor prognosis and rapid progression. MicroRNAs (miRNAs) play important roles in carcinogenesis and tumor progression. Insulin-like growth factor 1 receptor (IGF1R) is a transmembrane heterotetrameric protein that has been reported to promote transformation to malignancy and cancer cell proliferation and survival. In this study, we found that the expression of miR-29a-3p was downregulated in HCC patients, resulting in poor survival rates...
October 17, 2017: Oncotarget
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