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Biological Research

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https://www.readbyqxmd.com/read/29788995/in-vitro-chemokine-c-c-motif-receptor-6-dependent-non-inflammatory-chemotaxis-during-spermatogenesis
#1
Ruiying Diao, Xueyong Cai, Lu Liu, Lihua Yang, YongGang Duan, Zhiming Cai, Yaoting Gui, Lisha Mou
BACKGROUND: Chemokine (C-C motif) receptor 6 (CCR6) is present in sperm and plays a significant role in sperm motility and chemotaxis acting in the reproductive tracts. However, the expression and functional significance of CCR6 in testis are still poorly understood, especially in the process of spermatogenesis. METHODS AND RESULTS: CCR6 was expressed in spermatogenic cell lines and its expression was shown in an age-dependent upregulation manner from puberty to adulthood in mouse testis...
May 22, 2018: Biological Research
https://www.readbyqxmd.com/read/29661232/cmpd1-inhibited-human-gastric-cancer-cell-proliferation-by-inducing-apoptosis-and-g2-m-cell-cycle-arrest
#2
Yu Li, Depeng Zhang, Kaikai Yu, Yudong Hu, Qiong Wu, Feng Qian, Zishu Wang
BACKGROUND: Gastric cancer occupies the fourth highest morbidity rate of cancers worldwide. Clinical therapies of gastric cancer remain limited because of uncertainty of mechanisms and shortness of effective medicine. Thus, new drug candidates for gastric cancer treatment is urgently needed. RESULTS: In this study, CMPD1 as a wildly used MK2 phosphorylation inhibitor was employed to find its impact on gastric cancer cell proliferation, apoptosis and cell cycle using colony formation assay and flow cytometry analysis...
April 16, 2018: Biological Research
https://www.readbyqxmd.com/read/29653552/independent-prognostic-genes-and-mechanism-investigation-for-colon-cancer
#3
Chunsheng Li, Zhen Shen, Yangyang Zhou, Wei Yu
PROPOSE: We aimed to explore the potential molecular mechanism and independent prognostic genes for colon cancer (CC). METHODS: Microarray datasets GSE17536 and GSE39582 were downloaded from Gene Expression Omnibus. Meanwhile, the whole CC-related dataset were downloaded from The Cancer Genome Atlas (TCGA) database. Differentially expressed mRNA (DEMs) were identified between cancer tissue samples and para-carcinoma tissue samples in TCGA dataset, followed by the KEGG pathway and GO function analyses...
April 13, 2018: Biological Research
https://www.readbyqxmd.com/read/29604956/berberine-ameliorates-diabetic-nephropathy-by-inhibiting-tlr4-nf-%C3%AE%C2%BAb-pathway
#4
Liping Zhu, Jiakai Han, Rongrong Yuan, Lei Xue, Wuyan Pang
BACKGROUND: Diabetic nephropathy (DN) is the leading cause of end-stage renal failure, contributing to severe morbidity and mortality in diabetic patients. Berberine (BBR) has been well characterized to exert renoprotective effects in DN progression. However, the action mechanism of BBR in DN remains to be fully understood. METHODS: The DN rat model was generated by intraperitoneal injection of streptozotocin (STZ, 65 mg/kg body weight) while 30 mM high glucose (HG)-treated podocytes were used as an in vitro DN model...
March 31, 2018: Biological Research
https://www.readbyqxmd.com/read/29587857/hsp70-from-the-antarctic-sea-urchin-sterechinus-neumayeri-molecular-characterization-and-expression-in-response-to-heat-stress
#5
Marcelo González-Aravena, Camila Calfio, Luis Mercado, Byron Morales-Lange, Jorn Bethke, Julien De Lorgeril, César A Cárdenas
BACKGROUND: Heat stress proteins are implicated in stabilizing and refolding denatured proteins in vertebrates and invertebrates. Members of the Hsp70 gene family comprise the cognate heat shock protein (Hsc70) and inducible heat shock protein (Hsp70). However, the cDNA sequence and the expression of Hsp70 in the Antarctic sea urchin are unknown. METHODS: We amplified and cloned a transcript sequence of 1991 bp from the Antarctic sea urchin Sterechinus neumayeri, experimentally exposed to heat stress (5  and 10 °C for 1, 24 and 48 h)...
March 27, 2018: Biological Research
https://www.readbyqxmd.com/read/29544529/transcriptome-analysis-of-phosphorus-stress-responsiveness-in-the-seedlings-of-dongxiang-wild-rice-oryza-rufipogon-griff
#6
Qian-Wen Deng, Xiang-Dong Luo, Ya-Ling Chen, Yi Zhou, Fan-Tao Zhang, Biao-Lin Hu, Jian-Kun Xie
BACKGROUND: Low phosphorus availability is a major factor restricting rice growth. Dongxiang wild rice (Oryza rufipogon Griff.) has many useful genes lacking in cultivated rice, including stress resistance to phosphorus deficiency, cold, salt and drought, which is considered to be a precious germplasm resource for rice breeding. However, the molecular mechanism of regulation of phosphorus deficiency tolerance is not clear. RESULTS: In this study, cDNA libraries were constructed from the leaf and root tissues of phosphorus stressed and untreated Dongxiang wild rice seedlings, and transcriptome sequencing was performed with the goal of elucidating the molecular mechanisms involved in phosphorus stress response...
March 15, 2018: Biological Research
https://www.readbyqxmd.com/read/29482665/study-on-the-relationship-between-expression-patterns-of-cocaine-and-amphetamine-regulated-transcript-and-hormones-secretion-in-porcine-ovarian-follicles
#7
Pengfei Li, Jinzhu Meng, Jiongjie Jing, Qingling Hao, Zhiwei Zhu, Jianbo Yao, Lihua Lyu
BACKGROUND: Cocaine-and amphetamine regulated transcript (CART) is an endogenous neuropeptide, which is widespread in animals, plays a key role in regulation of follicular atresia in cattle and sheep. Among animal ovaries, CART mRNA was firstly found in the cattle ovaries. CART was localized in the antral follicles oocytes, granulosa and cumulus cells by immunohistochemistry and in situ hybridization. Further research found that secretion of E2 was inhibited in granulosa cells with a certain dose of CART, the effect depends on the stage of cell differentiation, suggesting that CART could play a crucial role in regulating follicle atresia...
February 26, 2018: Biological Research
https://www.readbyqxmd.com/read/29448959/impaired-t-cell-mediated-hepatitis-in-peroxisome-proliferator-activated-receptor-alpha-ppar%C3%AE-deficient-mice
#8
Ian N Hines, Michael Kremer, Sherri M Moore, Michael D Wheeler
BACKGROUND: Peroxisome proliferator activated receptor alpha (PPARα), a regulator of enzymes involved in β oxidation, has been reported to influence lymphocyte activation. The purpose of this study was to determine whether PPARα plays a role in T cell-mediated hepatitis induced by Concanavalin A (ConA). METHODS: Wild type (wt) or PPARα-deficient (PPARα-/- ) mice were treated with ConA (15 mg/kg) by intravenous injection 0, 10 or 24 h prior to sacrifice and serum and tissue collection for analysis of tissue injury, cytokine response, T cell activation and characterization...
February 15, 2018: Biological Research
https://www.readbyqxmd.com/read/29338771/regulation-of-aquaporins-in-plants-under-stress
#9
REVIEW
Ranganathan Kapilan, Maryam Vaziri, Janusz J Zwiazek
Aquaporins (AQP) are channel proteins belonging to the Major Intrinsic Protein (MIP) superfamily that play an important role in plant water relations. The main role of aquaporins in plants is transport of water and other small neutral molecules across cellular biological membranes. AQPs have remarkable features to provide an efficient and often, specific water flow and enable them to transport water into and out of the cells along the water potential gradient. Plant AQPs are classified into five main subfamilies including the plasma membrane intrinsic proteins (PIPs), tonoplast intrinsic proteins (TIPs), nodulin 26 like intrinsic proteins (NIPs), small basic intrinsic proteins (SIPs) and X intrinsic proteins (XIPs)...
January 16, 2018: Biological Research
https://www.readbyqxmd.com/read/29316982/the-tankyrase-inhibitor-g007-lk-inhibits-small-intestine-lgr5-stem-cell-proliferation-without-altering-tissue-morphology
#10
Jens Henrik Norum, Ellen Skarpen, Andreas Brech, Raoul Kuiper, Jo Waaler, Stefan Krauss, Therese Sørlie
BACKGROUND: The WNT pathway regulates intestinal stem cells and is frequently disrupted in intestinal adenomas. The pathway contains several potential biotargets for interference, including the poly-ADP ribosyltransferase enzymes tankyrase1 and 2. LGR5 is a known WNT pathway target gene and marker of intestinal stem cells. The LGR5+ stem cells are located in the crypt base and capable of regenerating all intestinal epithelial cell lineages. RESULTS: We treated Lgr5-EGFP-Ires-CreERT2;R26R-Confetti mice with the tankyrase inhibitor G007-LK for up to 3 weeks to assess the effect on duodenal stem cell homeostasis and on the integrity of intestinal epithelium...
January 9, 2018: Biological Research
https://www.readbyqxmd.com/read/29316975/inducible-t-cell-co-stimulators-regulate-the-proliferation-and-invasion-of-human-hepatocellular-carcinoma-hepg2-cells
#11
Yaning Wei, Yanan Wang, Aimin Zang, Yanhong Shang, Zizheng Song, Zhiyu Wang, Yangyang Wang, Hua Yang
BACKGROUND: This study determined the regulatory effects of inducible T-cell co-stimulators (ICOS) in human hepatocellular carcinoma HepG2 cells using a RNA interference (RNAi) technique. METHODS: A RNAi technique was used to knockdown the expression of ICOS. ICOS expression after knockdown was detected as mRNA and protein levels by RT-PCR and Western blot, respectively. A MTT colorimetric assay was used to detect cell proliferation, and the Transwell assay was used to detect cell invasion...
January 9, 2018: Biological Research
https://www.readbyqxmd.com/read/29298720/ccat2-is-an-oncogenic-long-non-coding-rna-in-pancreatic-ductal-adenocarcinoma
#12
Yi Cai, Xiaomei Li, Peng Shen, Dong Zhang
BACKGROUND: Pancreatic ductal adenocarcinoma (PDAC) is highly aggressive with poor prognosis. Long non-coding RNAs (lncRNAs), a group of non-coding RNAs, play important roles in the progression of PDAC. This study aimed to investigate the potential involvement of lncRNA CCAT2 in PDAC tumorigenesis. METHODS: Expression of CCAT2 was detected by quantitative real-time PCR (qRT-PCR) in 80 human PDAC tissues and three PDAC cell lines. The effects of CCAT2 silencing in PANC-1 cells on cell proliferation and invasion were studied using MTT assay and transwell assay, respectively...
January 3, 2018: Biological Research
https://www.readbyqxmd.com/read/29279050/expression-regulation-and-functional-analysis-of-rgs2-and-rgs4-in-adipogenic-and-osteogenic-differentiation-of-human-mesenchymal-stem-cells
#13
Alma Madrigal, Lun Tan, Yuanxiang Zhao
BACKGROUND: Understanding the molecular basis underlying the formation of bone-forming osteocytes and lipid-storing adipocytes will help provide insights into the cause of disorders originating in stem/progenitor cells and develop therapeutic treatments for bone- or adipose-related diseases. In this study, the role of RGS2 and RGS4, two members of the regulators of G protein signaling (RGS) family, was investigated during adipogenenic and osteogenenic differentiation of human mesenchymal stem cells (hMSCs)...
December 26, 2017: Biological Research
https://www.readbyqxmd.com/read/29268779/effect-of-fresh-frozen-plasma-on-the-in-vitro-activation-of-u937-monocytes-a-potential-role-for-the-age-of-blood-donors-and-their-underlying-cytokine-profile
#14
Mariana Patlán, Fausto Sánchez-Muñoz, Luis M Amezcua-Guerra, Adriana Granados, Araceli Páez, Felipe Massó, Ana M Mejía, Angeles Soster, Rafael Bojalil, Lenin Pavón, Luis A Jiménez-Zamudio, Ricardo Márquez-Velasco
BACKGROUND: Fresh frozen plasma (FFP) administration may increase the risk of nosocomial infections in parallel with the development of immune modulation. This could be driven by soluble mediators, possibly influencing the in vitro activation of human U937 monocyte cells, in a manner dependent on the age of the donors. METHODS: FFP donors were stratified into groups of 19-30 years, 31-40 years or 41-50 years, and U937 cells were cultured with FFP (alone or plus lipopolysaccharide-LPS) for 24 h...
December 21, 2017: Biological Research
https://www.readbyqxmd.com/read/29233192/methanolic-extract-of-euchelus-asper-exhibits-in-ovo-anti-angiogenic-and-in-vitro-anti-proliferative-activities
#15
Sweta Agrawal, Sachin Chaugule, Shashank More, Gargi Rane, Madhavi Indap
BACKGROUND: The marine environment is a rich source of bioactive natural products. Many of the marine bioactive compounds have been derived successfully from molluscs. Euchelus asper is a marine mollusc which is commonly found in the intertidal rocky regions of the Mumbai coast. The present study was focused on evaluating the anti-angiogenic and anti- proliferative activities of methanolic extract of Euchelus asper (EAME). METHODS: The anti-angiogenic activity of EAME (50-800 μg/mL) was assessed by chick chorio-allantoic membrane (CAM) model wherein multiple parameters in the CAM blood vessels were analysed through morphometric and histological investigations...
December 12, 2017: Biological Research
https://www.readbyqxmd.com/read/29228993/programmed-cell-death-5-transgenic-mice-attenuates-adjuvant-induced-arthritis-by-2-modifying-the-t-lymphocytes-balance
#16
Feng Yuan, Junfeng Wang, Keshi Zhang, Zhao Li, Zhenpeng Guan
BACKGROUND: Programmed cell death 5 (PDCD5) is an apoptosis-related gene cloned from TF-1 cells whose primary biological functions are to promote apoptosis and immune regulation. The effects and mechanisms exerted by key mediators of arthritic inflammation remain unclear in PDCD5 transgenic (PDCD5 tg) mice. RESULTS: In the current study, PDCD5 tg mice inhibited the progression of adjuvant-induced arthritis, specifically decreasing clinical signs and histological damage, compared with arthritis control mice...
December 11, 2017: Biological Research
https://www.readbyqxmd.com/read/29221464/molecular-and-functional-characterization-of-ferredoxin-nadp-h-oxidoreductase-from-gracilaria-chilensis-and-its-complex-with-ferredoxin
#17
María Alejandra Vorphal, Carola Bruna, Traudy Wandersleben, Jorge Dagnino-Leone, Francisco Lobos-González, Elena Uribe, José Martínez-Oyanedel, Marta Bunster
BACKGROUD: Ferredoxin NADP(H) oxidoreductases (EC 1.18.1.2) (FNR) are flavoenzymes present in photosynthetic organisms; they are relevant for the production of reduced donors to redox reactions, i.e. in photosynthesis, the reduction of NADP+ to NADPH using the electrons provided by Ferredoxin (Fd), a small FeS soluble protein acceptor of electrons from PSI in chloroplasts. In rhodophyta no information about this system has been reported, this work is a contribution to the molecular and functional characterization of FNR from Gracilaria chilensis, also providing a structural analysis of the complex FNR/Fd...
December 8, 2017: Biological Research
https://www.readbyqxmd.com/read/29169375/synaptic-configuration-of-quadrivalents-and-their-association-with-the-xy-bivalent-in-spermatocytes-of-robertsonian-heterozygotes-of-mus-domesticus
#18
Soledad Berríos, Raúl Fernández-Donoso, Eliana Ayarza
BACKGROUND: The nuclear architecture of meiotic prophase spermatocytes is based on higher-order patterns of spatial associations among chromosomal domains and consequently is prone to modification by chromosomal rearrangements. We have shown that nuclear architecture is modified in spermatocytes of Robertsonian (Rb) homozygotes of Mus domesticus. In this study we analyse the synaptic configuration of the quadrivalents formed in the meiotic prophase of spermatocytes of mice double heterozygotes for the dependent Rb chromosomes: Rbs 11...
November 23, 2017: Biological Research
https://www.readbyqxmd.com/read/29162157/role-of-regenerating-gene-ia-expression-on-local-invasion-and-survival-in-nasopharyngeal-carcinoma
#19
Haijie Xing, Xiangdong Chen, Yaofeng Han
BACKGROUND: Regenerating gene IA (REGIA) plays an important role in tissue regeneration and tumors prognosis of epithelium origin. However, the role of REGIA in nasopharyngeal carcinoma (NPC) is unclear. This study aims to investigate the expression and function of REG1A in NPC. RESULTS: We have found that there was 63 patients with REGIA positive expression of 155 patients in this study (40.65%). The positive expression rate of REGIA was 30.50, 44.44 and 47.83% in stage T2, T3 and T4 patients, respectively...
November 21, 2017: Biological Research
https://www.readbyqxmd.com/read/29041990/piceatannol-induced-apoptosis-through-up-regulation-of-microrna-181a-in-melanoma-cells
#20
Maotao Du, Zhong Zhang, Tao Gao
BACKGROUND: Melanoma took top position among the lethal cancers and, despite there have been some great attempts made to increase the natural life of patients with metastatic disease, long-lasting and complete remissions are few. Piceatannol, owns the similar function as resveratrol, has been defined as an anti-cancer agent playing important role in inhibition of proliferation, migration and metastasis in various cancer. Thus, we aim to investigate the anti-cancer effect and mechanisms of piceatannol in melanoma cells...
October 17, 2017: Biological Research
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