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https://www.readbyqxmd.com/read/29789879/vegf-a-mrna-transfection-as-a-novel-approach-to-improve-mouse-and-human-islet-graft-revascularisation
#1
Willem Staels, Yannick Verdonck, Yves Heremans, Gunter Leuckx, Sofie De Groef, Carlo Heirman, Eelco de Koning, Conny Gysemans, Kris Thielemans, Luc Baeyens, Harry Heimberg, Nico De Leu
AIMS/HYPOTHESIS: The initial avascular period following islet transplantation seriously compromises graft function and survival. Enhancing graft revascularisation to improve engraftment has been attempted through virus-based delivery of angiogenic triggers, but risks associated with viral vectors have hampered clinical translation. In vitro transcribed mRNA transfection circumvents these risks and may be used for improving islet engraftment. METHODS: Mouse and human pancreatic islet cells were transfected with mRNA encoding the angiogenic growth factor vascular endothelial growth factor A (VEGF-A) before transplantation under the kidney capsule in mice...
May 22, 2018: Diabetologia
https://www.readbyqxmd.com/read/29789714/estrogen-receptor-%C3%AE-promotes-renal-cell-carcinoma-progression-via-regulating-lncrna-hotair-mir-138-200c-204-217-associated-cerna-network
#2
Jie Ding, Chiuan-Ren Yeh, Yin Sun, Changyi Lin, Joshua Chou, Zhenyu Ou, Chawnshang Chang, Jun Qi, Shuyuan Yeh
Recent studies indicated that the estrogen receptor beta (ERβ) could affect the progression of prostate and bladder tumors, however, its roles in the renal cell carcinoma (RCC), remain to be elucidated. Here, we provide clinical evidence that ERβ expression is correlated in a negative manner with the overall survival/disease-free survival in RCC patients. Mechanism dissection revealed that targeting ERβ with ERβ-shRNA and stimulating the transactivation of ERβ with 17β-estradiol or environmental endocrine disrupting chemicals, all resulted in altering the lncRNA HOTAIR expression...
May 23, 2018: Oncogene
https://www.readbyqxmd.com/read/29786110/multi%C3%A2-layered-prevention-and-treatment-of-chronic-inflammation-organ-fibrosis-and-cancer-associated-with-canonical-wnt-%C3%AE-%C3%A2-catenin-signaling-activation-review
#3
Masaru Katoh
β‑catenin/CTNNB1 is an intracellular scaffold protein that interacts with adhesion molecules (E‑cadherin/CDH1, N‑cadherin/CDH2, VE‑cadherin/CDH5 and α‑catenins), transmembrane‑type mucins (MUC1/CD227 and MUC16/CA125), signaling regulators (APC, AXIN1, AXIN2 and NHERF1/EBP50) and epigenetic or transcriptional regulators (BCL9, BCL9L, CREBBP/CBP, EP300/p300, FOXM1, MED12, SMARCA4/BRG1 and TCF/LEF). Gain‑of‑function CTTNB1 mutations are detected in bladder cancer, colorectal cancer, gastric cancer, liver cancer, lung cancer, pancreatic cancer, prostate cancer and uterine cancer, whereas loss‑of‑function CTNNB1 mutations are also detected in human cancer...
May 17, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29785192/-panax-notoginseng-promotes-repair-of-colonic-microvascular-injury-in-sprague-dawley-rats-with-experimental-colitis
#4
Shiying Wang, Ping Tao, Lei Zhao, Wangjun Zhang, Hongyi Hu, Jiang Lin
To investigate the therapeutic effects of PN on intestinal inflammation and microvascular injury and its mechanisms, dextran sodium sulfate- (DSS-) or iodoacetamide- (IA-) induced rat colitis models were used. After colitis model was established, PN was orally administered for 7 days at daily dosage of 1.0 g/kg. Obvious colonic inflammation and mucosal injuries and microvessels were observed in DSS- and IA-induced colitis groups. DAI scores, serum concentrations of VEGFA121, VEGFA165, VEGFA165/VEGFA121, IL-6, and TNF- α , and expression of Rap1GAP and TSP1 proteins in the colon were significantly higher while serum concentrations of IL-4 and IL-10 and MVD in colon were significantly lower in the colitis model groups than in the normal control group...
2018: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29784793/camp-inducible-coactivator-crtc3-attenuates-brown-adipose-tissue-thermogenesis
#5
Young-Sil Yoon, Wen-Wei Tsai, Sam Van de Velde, Zhijiang Chen, Kuo-Fen Lee, Donald A Morgan, Kamal Rahmouni, Shigenobu Matsumura, Ezra Wiater, Youngsup Song, Marc Montminy
In response to cold exposure, placental mammals maintain body temperature by increasing sympathetic nerve activity in brown adipose tissue (BAT). Triggering of β-adrenergic receptors on brown adipocytes stimulates thermogenesis via induction of the cAMP/PKA pathway. Although cAMP response element-binding protein (CREB) and its coactivators-the cAMP-regulated transcriptional coactivators (CRTCs)-mediate transcriptional effects of cAMP in most tissues, other transcription factors such as ATF2 appear critical for induction of thermogenic genes by cAMP in BAT...
May 21, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29783732/hyaluronic-acid-influence-on-normal-and-osteoarthritic-tissue-engineered-cartilage
#6
Shabnam Hemmati-Sadeghi, Jochen Ringe, Tilo Dehne, Rainer Haag, Michael Sittinger
The aim of this study is to identify gene expression profiles associated with hyaluronic acid (HA) treatment of normal and osteoarthritis (OA)-like tissue-engineered cartilage. 3D cartilage micromasses were treated with tumour necrosis factor-α (TNF-α) (OA-inducer) and/or HA for 7 days. Viability was examined by PI/FDA staining. To document extracellular matrix (ECM) formation, glycosaminoglycans (GAG) were stained with Safranin-O and cartilage-specific type II collagen was detected immunohistochemically...
May 19, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29779471/hypoxia-induces-hypoxia-inducible-factor-1%C3%AE-and-potential-hif-responsive-gene-expression-in-uterine-leiomyoma
#7
Hiroshi Ishikawa, Linlin Xu, Kunizui Sone, Tatsuya Kobayashi, Guiwen Wang, Makio Shozu
Uterine leiomyoma is characterized by abundant extracellular matrix and broad avascular areas, both constantly resulting in hypoxia, suggesting some hypoxia-induced response function. Here, we examined whether hypoxia-inducible factor 1α (HIF-1α)- mediated hypoxic response function in uterine leiomyoma. Immunoblotting detected higher basal HIF-1α protein expression in nuclear extracts from uterine leiomyoma tissues than in those from the adjacent myometrium ( P = .0011). Immunohistochemical analysis revealed the presence of HIF-1α-positive cellular components in both leiomyoma and surrounding myometrial tissues...
January 1, 2018: Reproductive Sciences
https://www.readbyqxmd.com/read/29769561/transcriptome-analysis-of-circulating-pbmcs-to-understand-mechanism-of-high-altitude-adaptation-in-native-cattle-of-ladakh-region
#8
Preeti Verma, Ankita Sharma, Monika Sodhi, Kiran Thakur, Ranjit S Kataria, Saket K Niranjan, Vijay K Bharti, Prabhat Kumar, Arup Giri, Sahil Kalia, Manishi Mukesh
Ladakhi cattle is native population of Leh and Ladakh region and constantly exposed to hypobaric hypoxia over many generations. In present study, transcriptome signatures of cattle from Ladakh region (~5500 m) and Sahiwal cattle from tropical regions were evaluated using Agilent 44 K microarray chip. The top up-regulated genes in Ladakhi cows were INHBC, ITPRI, HECA, ABI3, GPR171, and HIF-1α involved in hypoxia and stress response. In Sahiwal cows, the top up-regulated genes eEF1A1, GRO1, CXCL2, DEFB3 and BOLA-DQA3 were associated with immune function and inflammatory response indicating their strong immune potential to combat the pathogens prevalent in the tropical conditions...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29768178/trained-memory-of-human-uterine-nk-cells-enhances-their-function-in-subsequent-pregnancies
#9
Moriya Gamliel, Debra Goldman-Wohl, Batya Isaacson, Chamutal Gur, Natan Stein, Rachel Yamin, Michael Berger, Myriam Grunewald, Eli Keshet, Yoach Rais, Chamutal Bornstein, Eyal David, Adam Jelinski, Iris Eisenberg, Caryn Greenfield, Arbel Ben-David, Tal Imbar, Ronit Gilad, Ronit Haimov-Kochman, David Mankuta, Matan Elami-Suzin, Ido Amit, Jacob H Hanna, Simcha Yagel, Ofer Mandelboim
Natural killer cells (NKs) are abundant in the human decidua, regulating trophoblast invasion and angiogenesis. Several diseases of poor placental development are associated with first pregnancies, so we thus looked to characterize differences in decidual NKs (dNKs) in first versus repeated pregnancies. We discovered a population found in repeated pregnancies, which has a unique transcriptome and epigenetic signature, and is characterized by high expression of the receptors NKG2C and LILRB1. We named these cells Pregnancy Trained decidual NK cells (PTdNKs)...
May 15, 2018: Immunity
https://www.readbyqxmd.com/read/29767474/mesenchymal-stromal-cells-from-shwachman-diamond-syndrome-patients-fail-to-recreate-a-bone-marrow-niche-in-vivo-and-exhibit-impaired-angiogenesis
#10
Donatella Bardelli, Erica Dander, Cristina Bugarin, Claudia Cappuzzello, Alice Pievani, Grazia Fazio, Paolo Pierani, Paola Corti, Piero Farruggia, Carlo Dufour, Simone Cesaro, Marco Cipolli, Andrea Biondi, Giovanna D'Amico
Shwachman-Diamond syndrome (SDS) is a rare multi-organ recessive disease mainly characterised by pancreatic insufficiency, skeletal defects, short stature and bone marrow failure (BMF). As in many other BMF syndromes, SDS patients are predisposed to develop a number of haematopoietic malignancies, particularly myelodysplastic syndrome and acute myeloid leukaemia. However, the mechanism of cancer predisposition in SDS patients is only partially understood. In light of the emerging role of mesenchymal stromal cells (MSCs) in the regulation of bone marrow homeostasis, we assessed the ability of MSCs derived from SDS patients (SDS-MSCs) to recreate a functional bone marrow niche, taking advantage of a murine heterotopic MSC transplant model...
May 16, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29767258/pd-l1-mrna-expression-in-egfr-mutant-lung-adenocarcinoma
#11
Kazutoshi Isobe, Atsushi Kakimoto, Tetuo Mikami, Kyohei Kaburaki, Hiroshi Kobayashi, Takahiro Yoshizawa, Yuta Nakano, Takashi Makino, Hajime Otsuka, Go Sano, Keishi Sugino, Susumu Sakamoto, Yujiro Takai, Naobumi Tochigi, Akira Iyoda, Sakae Homma
Molecular mechanisms of programmed death-ligand 1 (PD-L1) mRNA expression and roles of apoptosis and biomarkers are poorly understood in epidermal growth factor receptor (EGFR)-mutant lung adenocarcinoma patients. Thirty-three patients with recurrent postoperative EGFR-mutant lung adenocarcinoma (exon 19 deletion in 16, L858R in 15, G719C in 2 patients) treated with gefitinib were studied. PD-L1 mRNA expression of formalin-fixed paraffin-embedded paratumoral and intratumoral tissues was quantified by PCR. Correlations of PD-L1 mRNA expression with BIM, p53 upregulated modular of apoptosis (PUMA), human epidermal growth factor receptor 2 (HER2), mesenchymal-epithelial transition (MET), EGFR, and vascular endothelial growth factor A (VEGFA) were determined...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29767252/colony-stimulating-factor-1-and-colony-stimulating-factor-1-receptor-co-expression-is-associated-with-disease-progression-in-gastric-cancer
#12
Yoshinaga Okugawa, Yuji Toiyama, Takashi Ichikawa, Mikio Kawamura, Hiromi Yasuda, Hiroyuki Fujikawa, Susumu Saigusa, Masaki Ohi, Toshimitsu Araki, Koji Tanaka, Yasuhiro Inoue, Motoyoshi Tanaka, Chikao Miki, Masato Kusunoki
Colony‑stimulating‑factor‑1 (CSF‑1) is a hematopoietic growth factor that exerts its effects through the c‑fms/CSF‑1 receptor (CSF‑1R). The CSF‑1/CSF‑1R axis is thought to be involved in the development of several types of cancer. This study aimed to clarify the clinical and biological significance of the CSF‑1/CSF‑1R axis in gastric cancer (GC). For this purpose, we evaluated CSF‑1 and CSF‑1R expression in GC tissues from 148 patients by RT‑qPCR and immunohistochemistry. The biological roles of the CSF‑1/CSF‑1R axis were investigated by measuring the cell proliferation and migration, and anoikis resistance in a human GC cell line following treatment with recombinant human CSF‑1 and/or CSF‑1R inhibitor...
May 16, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29763928/identification-and-verification-of-candidate-genes-regulating-neural-stem-cells-behavior-under-hypoxia
#13
Zhongju Shi, Zhijian Wei, Jiahe Li, Shiyang Yuan, Bin Pan, Fujiang Cao, Hengxing Zhou, Yan Zhang, Yao Wang, Shiwei Sun, Xiaohong Kong, Shiqing Feng
BACKGROUND/AIMS: Neural stem cells (NSCs) reside in a hypoxic environment, and hypoxia plays an important role in their development and differentiation. This study aimed to explore the underlying mechanisms by which hypoxia affects NSC behavior. METHODS: In the current study, we downloaded the gene expression dataset GSE68572 and identified the differentially expressed genes (DEGs) by analyzing high-throughput gene expression in hypoxic and normoxic NSCs. Subsequently, we analyzed these data using a combined bioinformatics approach and predicted the microRNAs (miRNAs) targeting the key gene using miRNA databases...
May 10, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29761299/vegfa-and-vegfr2-rnascope-determination-in-gastric-cancer
#14
Roberto Tamma, Tiziana Annese, Simona Ruggieri, Andrea Marzullo, Beatrice Nico, Domenico Ribatti
Gastric cancer is the fifth most common cancer and third leading cause of cancer-related death worldwide. Several studies on angiogenic blocking agents in gastric cancer revealing promising results by the use of monoclonal antibodies against VEGFA or its receptor VEGFR2 or against VEGFA activating pathway. The validation of biomarkers useful to better organize the clinical trials involving anti-angiogenic therapies is crucial. Molecular markers such as RNA are increasingly used for cancer diagnosis, prognosis, and therapy guidance as in the case of the targeted therapies concerning the inhibition of angiogenesis...
May 14, 2018: Journal of Molecular Histology
https://www.readbyqxmd.com/read/29756413/the-vegfa-1154g-a-polymorphism-is-associated-with-reduced-risk-of-rheumatoid-arthritis-but-not-with-systemic-lupus-erythematosus-in-mexican-women
#15
Julian Ramírez-Bello, Daniel Cadena-Sandoval, José Manuel Fragoso, Rosa Elda Barbosa-Cobos, Mario Adán Moreno-Eutímio, Miguel Ángel Saavedra-Salinas, Guillermo Valencia-Pacheco, Ricardo F López-Villanueva, Silvia Jiménez-Morales
No abstract text is available yet for this article.
May 14, 2018: Journal of Gene Medicine
https://www.readbyqxmd.com/read/29750565/pregnancy-late-in-rodent-life-has-detrimental-effects-on-the-heart
#16
Eunhee Chung, Kaylan M Haizlip, Leslie A Leinwand
During pregnancy, the heart undergoes significant and numerous changes, including hypertrophy that are usually described as physiological and reversible. Two aspects of the cardiac response to pregnancy are relatively understudied: advanced maternal age and multiple pregnancies (multiparity). Repeated breeder mice (RB) that have undergone 5 to 7 consecutive pregnancies were sacrificed 21 days after the weaning of their last pups and were compared to age-matched primiparous, one-time pregnant mice (O1P). The ages of the old mouse groups were similar (12 {plus minus} 1 month)...
May 11, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29749553/ebv%C3%A2-lmp1-is-involved-in-vasculogenic-mimicry-formation-via-vegfa-vegfr1-signaling-in-nasopharyngeal-carcinoma
#17
San Xu, Ju Bai, Zhou Zhuan, Bo Li, Zhibao Zhang, Xia Wu, Xiangjian Luo, Lifang Yang
The Epstein-Barr virus latent membrane protein 1 (EBV‑LMP1) is an oncoviral protein that plays an important role in oncogenic transformation in EBV‑associated nasopharyngeal carcinoma (NPC). Our previous studies demonstrated that LMP1 increased VEGFA expression and upregulated angiogenesis in NPC. Vasculogenic mimicry (VM) is a mechanism by which tumor cells can obtain nutrients to survive, and VM has been observed in numerous types of tumors. However, the occurrence and significance of VM in NPC and the relationship between LMP1 and VM have not yet been evaluated...
May 3, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29749552/genome%C3%A2-wide-dna-methylation-profiling-in-a-rat-model-with-vascular-dementia
#18
Jong-Min Park, Yoon Ju Kim, Min Kyung Song, Jae-Min Lee, Youn-Jung Kim
Vascular dementia (VaD), the second most prevalent type of dementia, is caused by reduced blood supply to the brain that results in cognitive impairment. Despite the efforts of numerous studies, the pathological mechanisms behind VaD remain unclear. The aim of the present study was to identify candidate genes that undergo changes in hippocampal DNA methylation owing to VaD. A genome‑wide DNA methylation analysis was performed, using methylated DNA‑binding domain sequencing. VaD model rats with cognitive impairment induced by bilateral common carotid artery occlusion were confirmed using the radial arm maze test...
May 8, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29748595/crispr-lbcpf1-prevents-choroidal-neovascularization-in-a-mouse-model-of-age-related-macular-degeneration
#19
Taeyoung Koo, Sung Wook Park, Dong Hyun Jo, Daesik Kim, Jin Hyoung Kim, Hee-Yeon Cho, Jeungeun Kim, Jeong Hun Kim, Jin-Soo Kim
LbCpf1, derived from Lachnospiraceae bacterium ND2006, is a CRISPR RNA-guided endonuclease and holds promise for therapeutic applications. Here we show that LbCpf1 can be used for therapeutic gene editing in a mouse model of age-related macular degeneration (AMD). The intravitreal delivery of LbCpf1, targeted to two angiogenesis-associated genes encoding vascular endothelial growth factor A (Vegfa) and hypoxia inducing factor 1a (Hif1a), using adeno-associated virus, led to efficient gene disruption with no apparent off-target effects in the retina and retinal pigment epithelium (RPE) cells...
May 10, 2018: Nature Communications
https://www.readbyqxmd.com/read/29746548/anti-angiogenic-vegfaxxxb-transcripts-are-not-expressed-in-the-medio-basal-hypothalamus-of-the-seasonal-sheep
#20
Didier Lomet, Benoît Piégu, Shona H Wood, Hugues Dardente
This study investigated Vegfa expression in the pars tuberalis (PT) of the pituitary and medio-basal hypothalamus (MBH) of sheep, across seasons and reproductive states. It has recently been proposed that season impacts alternative splicing of Vegfa mRNA in the PT, which shifts the balance between angiogenic VEGFAxxx and anti-angiogenic VEGFAxxxb isoforms (with xxx the number of amino acids of the mature VEGFA proteins) to modulate seasonal breeding. Here, we used various RT-PCR methodologies and analysis of RNAseq datasets to investigate seasonal variation in expression and splicing of the ovine Vegfa gene...
2018: PloS One
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