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Cell Biochemistry and Function

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https://www.readbyqxmd.com/read/29781107/pristimerin-targeting-nf-%C3%AE%C2%BAb-pathway-inhibits-proliferation-migration-and-invasion-in-esophageal-squamous-cell-carcinoma-cells
#1
Yuanqing Tu, Fuxing Tan, Jingfeng Zhou, Jingxuan Pan
Esophageal squamous cell carcinoma (ESCC) is one of the leading causes of cancer-related death with poor prognosis in China. Identifying novel targeted therapies in ESCC is urgently needed. The aberrant activation of NF-κB signalling pathway is critical for prognosis and recurrence of ESCC, which make it a potential target in the treatment of ESCC. Here, we found that pristimerin inhibited ESCC cell proliferation, migration, invasion, induced cell apoptosis, and eliminated cancer stem-like cells (CSCs). It also showed a synergistic effect on ESCC when combined with 5-fluorouracil (5-FU)...
May 20, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29781103/targeting-ubiquitin-specific-protease-7-in-cancer-a-deubiquitinase-with-great-prospects
#2
REVIEW
Farjana Yeasmin Khusbu, Fang-Zhi Chen, Han-Chun Chen
Deubiquitinase (DUB)-mediated cleavage of ubiquitin chain balances ubiquitination and deubiquitination for determining protein fate. USP7 is one of the best characterized DUBs and functionally important. Numerous proteins have been identified as potential substrates and binding partners of USP7; those play crucial roles in diverse array of cellular and biological processes including tumour suppression, cell cycle, DNA repair, chromatin remodelling, and epigenetic regulation. This review aims at summarizing the current knowledge of this wide association of USP7 with many cellular processes that enlightens the possibility of abnormal USP7 activity in promoting oncogenesis and the importance of identification of specific inhibitors...
May 20, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29774951/protein-kinase-c%C3%AE-pkc%C3%AE-involved-in-the-regulation-of-pakt1-ser473-on-the-release-of-mouse-oocytes-from-diplotene-arrest
#3
Lingling Liu, Sen Li, Hanwen Li, Dahai Yu, Chunyu Li, Gensong Li, Yu Cao, Chen Feng, Xin Deng
Defects in meiotic maturation may lead to chromosome segregation errors and genomic instability. Previous reports indicated that protein kinase C delta (PKCδ) may interact with microtubule organizing center-associated protein to play a role on meiotic spindle organization of mammalian oocytes. In this study, we explored the potential role of protein kinase B alpha (PKBα/Akt1), PKCδ, and their relationship on meiotic maturation of mouse oocytes. We examined the expression and localization of pAkt1 (Ser473) and/or pPKCδ (Thr505) under the treatment of SH-6 or Sotrastaurin...
May 18, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29748970/dipeptidyl-peptidase-4-inhibition-prevents-cell-death-via-extrinsic-and-intrinsic-apoptotic-pathways-in-rat-pancreas-with-insulin-resistance
#4
Gulay Nephan, Zeynep Mine Coskun, Sema Bolkent
The study aims to evaluate the effect of saxagliptin, a specific inhibitor of dipeptidyl peptidase-4 enzymes, on body weight gain, lipid profiles, and cell death through apoptosis in rats with insulin resistance (IR). Male adult Sprague-Dawley rats (n = 32) were divided into 4 groups: control (Ctrl), IR, saxagliptin control, and IR treated with saxagliptin(IR + S). Insulin resistance was induced by 10% fructose in the drinking water for 8 weeks. Saxagliptin (10 mg/kg/day) was administrated by oral gavage for 2 weeks...
May 10, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29676471/vitamin-d3-regulates-steroidogenesis-in-granulosa-cells-through-amp-activated-protein-kinase-ampk-activation-in-a-mouse-model-of-polycystic-ovary-syndrome
#5
Shabnam Bakhshalizadeh, Fardin Amidi, Reza Shirazi, Maryam Shabani Nashtaei
Polycystic ovary syndrome (PCOS) is an endocrine and metabolic disorder in reproductive-aged women. Hormonal abnormality caused by steroidogenesis disturbances appears to be the main culprit of the clinical picture in PCOS. Vitamin D3 could regulate steroidogenesis in granulosa cells, but the mechanism of action of vitamin D3 on steroidogenesis remains unknown. AMP-activated protein kinase (AMPK) has a modulating role in steroid hormone production. We investigated the effect of vitamin D3 on steroidogenesis in cultured granulosa cells of dehydroepiandrosterone-induced PCOS mice and studied the involvement of AMPK signalling pathway in the current process...
April 20, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29654619/overexpression-of-zak%C3%AE-in-human-osteosarcoma-cells-enhances-zak%C3%AE-expression-resulting-in-a-synergistic-apoptotic-effect
#6
Chien-Yao Fu, Yan-Shen Tseng, Ming-Cheng Chen, Hsi-Hsien Hsu, Jaw-Ji Yang, Chuan-Chou Tu, Yueh-Min Lin, Vijaya Padma Viswanadha, Ke Ding, Wei-Wen Kuo, Chih-Yang Huang
ZAK is a novel mixed lineage kinase-like protein that contains a leucine-zipper and a sterile-alpha motif as a protein-protein interaction domain, and it is located in the cytoplasm. There are 2 alternatively spliced forms of ZAK: ZAKα and ZAKβ. Previous studies showed that ZAKα is involved in various cell processes, including cell proliferation, cell differentiation, and cardiac hypertrophy, but the molecular mechanism of ZAKβ is not yet known. In a recent study in our laboratory, we found that ZAKβ can ameliorate the apoptotic effect induced by ZAKα in H9c2 cells...
April 13, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29653464/microrna-130b-targets-pten-to-induce-resistance-to-cisplatin-in-lung-cancer-cells-by-activating-wnt-%C3%AE-catenin-pathway
#7
Qiang Zhang, Bin Zhang, Leina Sun, Qingna Yan, Yu Zhang, Zhenfa Zhang, Yanjun Su, Changli Wang
More and more studies indicate the relevance of miRNAs in inducing certain drug resistance. Our study aimed to investigate whether microRNA-130b-3p (miR-130b) mediates the chemoresistance as well as proliferation of lung cancer (LC) cells. MTS assay and apoptosis analysis were conducted to determine cell proliferation and apoptosis, respectively. Binding sites were identified using a luciferase reporter system, whereas mRNA and protein expression of target genes was determined by RT-PCR and immunoblot, respectively...
April 13, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29653462/docosahexaenoic-acid-reversed-atherosclerotic-changes-in-human-endothelial-cells-induced-by-palmitic-acid-in-vitro
#8
Saeede Karbasforush, Alireza Nourazarian, Masoud Darabi, Reza Rahbarghazi, Fatemeh Khaki-Khatibi, Çıgır Biray Avci, Leila Salimi, Bakiye Goker Bagca, Tanaz Novin Bahador, Aysa Rezabakhsh, Majid Khaksar
Abnormal activity of atherosclerotic endothelial cells paving luminal surface of blood vessels has been described in many diseases. It has been reported that natural polyunsaturated fatty acids such as docosahexaenoic acid exert therapeutic effects in atherosclerotic condition. Human umbilical vein endothelial cells were treated with 1mM palmitic acid for 48 hours and exposed to 40μM docosahexaenoic acid for the next 24 hours. Real-time polymerase chain reaction analysis was used to measure the expression of PTX3, iNOS, and eNOS...
April 13, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29574863/deciphering-the-molecular-mechanism-and-apoptosis-underlying-the-in-vitro-and-in-vivo-chemotherapeutic-efficacy-of-vanadium-luteolin-complex-in-colon-cancer
#9
Souvik Roy, Tania Chakraborty
The present study is carried out to reveal the chemotherapeutic effects of vanadium luteolin complex against HT-29 human colon carcinoma cell line and chemically induced rat colon carcinoma. Our investigation revealed that the vanadium luteolin complex induces apoptosis in HT-29 cells in a dose-dependent manner. Furthermore, the study also confirmed that the vanadium luteolin complex increased caspase-3 and p53 expression whereas reduced the VEGF, mTOR, Akt expression, and induced DNA fragmentation in HT-29 cells...
March 25, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29521436/microrna-320-involves-in-the-cardioprotective-effect-of-insulin-against-myocardial-ischemia-by-targeting-survivin
#10
Ni Yang, Liuzhong Wu, Ying Zhao, Ning Zou, Chunfeng Liu
It is generally accepted that insulin exerts an antiapoptotic effect against ischemia/reperfusion through the activation of PI3K/Akt/mTOR pathway. MicroRNAs involve in multiple cardiac pathophysiological processes, including ischemia/reperfusion-induced cardiac injury. However, the regulation of microRNAs in the cardioprotective effect of insulin is rarely discussed. In this study, using a cell model of ischemia through culturing H9C2 cardiac myocytes in serum-free medium with hypoxia, we demonstrated that pretreatment with insulin significantly inhibited cell apoptosis and downregulated microRNA-320 (miR-320) expression...
April 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29464742/gdx-ubl4a-null-mice-exhibit-mild-kyphosis-and-scoliosis-accompanied-by-dysregulation-of-osteoblastogenesis-and-chondrogenesis
#11
Jiao Liang, Jun Li, Yanxia Fu, Fangli Ren, Jiake Xu, Mengyu Zhou, Peiyu Li, Haotian Feng, Yinyin Wang
GdX, also named ubiquitin-like protein 4A, is a ubiquitin-domain protein characterized by a ubiquitin-like domain that regulates the movement of misfolded proteins from the endoplasmic reticulum membrane to proteasome. However, its function in skeletal biology remains unclear. Here, we report that GdX plays a crucial role in skeletal development as mice lacking GdX exhibit skeletal dysplasias, mild kyphosis, and scoliosis. During embryonic stage, GdX knockout mice display decreased bone mineral density and trabecular bone accompanied by delayed osteogenic formation...
April 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29441602/erk1-2-and-akt-phosphorylation-were-essential-for-mgf-e-peptide-regulating-cell-morphology-and-mobility-but-not-proangiogenic-capacity-of-bmscs-under-severe-hypoxia
#12
Yongqiang Sha, Li Yang, Yonggang Lv
Severe hypoxia inhibits the adhesion and mobility of bone marrow-derived mesenchymal stem cells (BMSCs) and limits their application in bone tissue engineering. In this study, CoCl2 was used to simulate severe hypoxia and the effects of mechano-growth factor (MGF) E peptide on the morphology, adhesion, migration, and proangiogenic capacity of BMSCs under hypoxia were measured. It was demonstrated that severe hypoxia (500-μM CoCl2 ) significantly caused cell contraction and reduced cell area, roundness, adhesion, and migration of BMSCs...
April 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29431188/dj-1-plays-an-obligatory-role-in-the-cardioprotection-of-delayed-hypoxic-preconditioning-against-hypoxia-reoxygenation-induced-oxidative-stress-through-maintaining-mitochondrial-complex-i-activity
#13
Hao Ding, Xing-Wang Xu, Huan Wang, Lin Xiao, Le Zhao, Guang-Ling Duan, Xiao-Ran Li, Zhao-Xia Ma, He-Ping Chen
DJ-1 was recently reported to mediate the cardioprotection of delayed hypoxic preconditioning (DHP) by suppressing hypoxia/reoxygenation (H/R)-induced oxidative stress, but its mechanism against H/R-induced oxidative stress during DHP is not fully elucidated. Here, using the well-established cellular model of DHP, we again found that DHP significantly improved cell viability and reduced lactate dehydrogenase release with concurrently up-regulated DJ-1 protein expression in H9c2 cells subjected to H/R. Importantly, DHP efficiently improved mitochondrial complex I activity following H/R and attenuated H/R-induced mitochondrial reactive oxygen species (ROS) generation and subsequent oxidative stress, as demonstrated by a much smaller decrease in reduced glutathione/oxidized glutathione ratio and a much smaller increase in intracellular ROS and malondialdehyde contents than that observed for the H/R group...
April 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29392739/fish-bone-peptide-promotes-osteogenic-differentiation-of-mc3t3-e1-pre-osteoblasts-through-upregulation-of-mapks-and-smad-pathways-activated-bmp-2-receptor
#14
Seong-Yeong Heo, Seok-Chun Ko, Seung Yun Nam, Junghwan Oh, Young-Mog Kim, Jae-Il Kim, Namwon Kim, Myunggi Yi, Won-Kyo Jung
Fish bone, a by-product of fishery processing, is composed of protein, calcium, and other minerals. The objective of this study was to investigate the effects of a bioactive peptide isolated from the bone of the marine fish, Johnius belengerii, on the osteoblastic differentiation of MC3T3-E1 pre-osteoblasts. Post consecutive purification by liquid chromatography, a potent osteogenic peptide, composed of 3 amino acids, Lys-Ser-Ala (KSA, MW: 304.17 Da), was identified. The purified peptide promoted cell proliferation, alkaline phosphatase activity, mineral deposition, and expression levels of phenotypic markers of osteoblastic differentiation in MC3T3-E1 pre-osteoblast...
April 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29468700/cancer-cells-govern-mir-2909-exosomal-recruitment-through-its-3-end-post-transcriptional-modification
#15
Sameena Wani, Deepak Kaul
It is widely believed that selective packaging of nucleic acids, especially microRNAs, into exosomes secreted by the cancer cells not only ensures their growth and survival but also helps in the escape from immune surveillance. Keeping in view the fact that human cellular miR-2909 has emerged to regulate genes involved in oncogenesis and immunity, the present study was addressed to reveal the nature of miR-2909 expression within cancer cells of different tissue origin and its incorporation into exosomes secreted by these cells...
March 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29431194/neuronal-like-differentiated-sh-sy5y-cells-adaptation-to-a-mild-and-transient-h-2-o-2-induced-oxidative-stress
#16
Rachid Akki, Rosalba Siracusa, Rossana Morabito, Alessia Remigante, Michela Campolo, Mohammed Errami, Giuseppina La Spada, Salvatore Cuzzocrea, Angela Marino
Preconditioning (PC) is a cell adaptive response to oxidative stress and, with regard to neurons, can be considered as a neuroprotective strategy. The aim of the present study was to verify how neuronal-like differentiated SH-SY5Y cells adapt to a mild and transient H2 O2 -induced oxidative stress and, hence, whether may be considered as more sensitive cell model to study PC pathways. A first screening allowed to define H2 O2 concentrations for PC (10μM-50μM), applied before damage(100μM H2 O2 ). Cell viability measured 24 hours after 100μM H2 O2 -induced damage was ameliorated by 24-hour pre-exposure to low-concentration H2 O2 (10μM-30μM) with cell size as well restored...
March 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29399832/autophagy-is-essential-for-the-maintenance-of-amino-acids-and-atp-levels-during-acute-amino-acid-starvation-in-mdamb231-cells
#17
Mark Thomas, Tanja Davis, Ben Loos, Balindiwe Sishi, Barbara Huisamen, Hans Strijdom, Anna-Mart Engelbrecht
Autophagy plays a major role in the adaptive metabolic response of cancer cells during adverse conditions such as nutrient deprivation. However, specific data that assess metabolite profiles in context with adenosine triphosphate (ATP) availability and cell death susceptibility remain limited. Human breast cancer cells, MDAMB231, and normal breast epithelial cells, MCF12A, were subjected to short-term amino acid starvation and the cellular apoptotic and autophagic responses assessed. The role of autophagy in the control of cellular amino acid, ATP, free fatty acid, and glucose levels during amino acid starvation were compared...
March 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29372560/inhibition-of-the-csf-1-receptor-sensitizes-ovarian-cancer-cells-to-cisplatin
#18
Rong Yu, Hao Jin, Congcong Jin, Xuefeng Huang, Jinju Lin, Yili Teng
Ovarian cancer is one of the most common female malignancies, and cisplatin-based chemotherapy is routinely used in locally advanced ovarian cancer patients. Acquired or de novo cisplatin resistance remains the barrier to patient survival, and the mechanisms of cisplatin resistance are still not well understood. In the current study, we found that colony-stimulating-factor-1 receptor (CSF-1R) was upregulated in cisplatin-resistant SK-OV-3 and CaoV-3 cells. Colony-stimulating-factor-1 receptor knockdown suppressed proliferation and enhanced apoptosis in cisplatin-resistant SK-OV-3 and CaoV-3 cells...
March 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29372557/mesenchymal-stem-cells-promote-cell-invasion-and-migration-and-autophagy-induced-epithelial-mesenchymal-transition-in-a549-lung-adenocarcinoma-cells
#19
Dan Luo, Shiyuan Hu, Chunlan Tang, Guoxiang Liu
Mesenchymal stem cells (MSCs) are recruited into the tumour microenvironment and promote tumour growth and metastasis. Tumour microenvironment-induced autophagy is considered to suppress primary tumour formation by impairing migration and invasion. Whether these recruited MSCs regulate tumour autophagy and whether autophagy affects tumour growth are controversial. Our data showed that MSCs promote autophagy activation, reactive oxygen species production, and epithelial-mesenchymal transition (EMT) as well as increased migration and invasion in A549 cells...
March 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29336056/ilei-is-an-important-intermediate-participating-in-the-formation-of-tgf-%C3%AE-1-induced-renal-tubular-emt
#20
Xing Zhao, Gang Luo, Yan Fan, Xiaoxue Ma, Jieqing Zhou, Hong Jiang
Renal interstitial fibrosis is the most common process by which chronic kidney diseases progress to end-stage renal failure. Epithelial-to-mesenchymal transitions (EMTs) play a crucial role in the progression of renal interstitial fibrosis. A newly identified cytokine, interleukin-like EMT inducer (ILEI), has been linked to EMT in some diseases. However, the effects of ILEI on renal tubular EMT have not yet been well established. Here, we characterize the expression of ILEI in tubular EMT and describe the role and mechanism of ILEI in transforming growth factor beta 1 (TGF-β1)-induced renal tubular EMT...
March 2018: Cell Biochemistry and Function
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