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Journal of Molecular Cell Biology

Ming-Shan Wang, Yong-Xia Huo, Yan Li, Newton O Otecko, Ling-Yan Su, Hai-Bo Xu, Shi-Fang Wu, Min-Sheng Peng, He-Qun Liu, Lin Zeng, David M Irwin, Yong-Gang Yao, Dong-Dong Wu, Ya-Ping Zhang
Body size is the most important economic trait for animal production and breeding. Several hundreds of loci have been reported to be associated with growth trait and body weight in chickens. The loci are mapped to large genomic regions due to the low density and limited number of genetic markers in previous studies. Herein, we employed comparative population genomics to identify genetic basis underlying the small body size of Yuanbao chicken (a famous ornamental chicken) based on 89 whole genomes. The most significant signal was mapped to the BMP10 gene, whose expression was upregulated in the Yuanbao chicken...
October 15, 2016: Journal of Molecular Cell Biology
Lijuan Lu, Cailong Pan, Lu Chen, Liang Hu, Chaoyu Wang, Yuan Han, Zhixiang Cheng, Yanjing Yang, Wen-Tao Liu
Neuropathic pain is a debilitating clinical condition with few efficacious treatments, warranting development of novel therapeutics. Ozone is widely used as an alternative therapy for many different pain conditions, with exact mechanisms still elusive. In this study, we found that a single peri-sciatic nerve injection of ozone decreased mechanical allodynia and thermal hyperalgesia, and normalized the phosphorylation of protein kinase C γ (PKCγ), N-methyl-D-aspartate receptor (NMDAR), and extracellular signal-regulated kinase in a chronic constriction injury (CCI) model in rat sciatic nerve...
October 15, 2016: Journal of Molecular Cell Biology
Tingting Yu, Yong Zuo, Rong Cai, Xian Huang, Shuai Wu, Chenxi Zhang, Y Eugene Chin, Dongdong Li, Zhenning Zhang, Nansong Xia, Qi Wang, Hao Shen, Xuebiao Yao, Zhong-Yin Zhang, Song Xue, Lei Shen, Jinke Cheng
Interferon-γ (IFN-γ) triggers macrophage for inflammation response by activating the intracellular JAK-STAT1 signaling. SOCS1 and protein tyrosine phosphatases can negatively modulate IFN-γ signaling. Here we identify a novel negative feedback loop mediated by STAT3-SOCS3, which is tightly controlled by SENP1 via de-SUMOylation of protein tyrosine phosphatase 1B (PTP1B), in IFN-γ signaling. SENP1-deficient macrophages show defects in IFN-γ signaling and M1 macrophage activation. PTP1B in SENP1-deficient macrophages is highly SUMOylated, which reduces PTP1B-induced de-phosphorylation of STAT3...
October 4, 2016: Journal of Molecular Cell Biology
Xiao Wang, Yawen Mu, Mengshi Sun, Junhai Han
Homeostatic regulation of the light sensor, rhodopsin, is critical for the maintenance of light sensitivity and survival of photoreceptors. The major fly rhodopsin, Rh1, undergoes light-induced endocytosis and degradation, but its protein and mRNA levels remain constant during light/dark cycles. It is not clear how translation of Rh1 is regulated. Here, we show that adult photoreceptors maintain a constant, abundant quantity of ninaE mRNA, which encodes Rh1. We demonstrate that the Fmr1 protein associates with ninaE mRNA and represses its translation...
October 4, 2016: Journal of Molecular Cell Biology
Yaqin Zhang, Hongliang Mei, Xiaoai Chang, Fang Chen, Yunxia Zhu, Xiao Han
The proinflammatory profile of M1 macrophage accumulation in adipose tissue is a central event leading to the metabolic complications of obesity. However, the mechanisms by which M1 macrophages are enriched in adipose tissue during weight gain remain incompletely understood. Here, we investigated the effects of adipocyte-derived microvesicles (ADM) on modulating macrophage phenotype in mice and explored the involved molecular signaling pathways. We found that, compared with ADM from lean mice (SD ADM), ADM from obese mice (HFD ADM) significantly enhanced M1 marker expression...
September 25, 2016: Journal of Molecular Cell Biology
Yanzhou Zhang, Vanitha Krishna Subbaiah, Deepa Rajagopalan, Cheng Yong Tham, Lissa Nurrul Abdullah, Tan Boon Toh, Min Gong, Tuan Zea Tan, Shweta Pradip Jadhav, Amit Kumar Pandey, Neerja Karnani, Edward Kai-Hua Chow, Jean Paul Thiery, Sudhakar Jha
HIV-Tat-interacting protein of 60 kDa (TIP60) is a lysine acetyltransferase and known to be downregulated in multiple cancers. Among various signalling pathways, TIP60 is implicated in regulating epithelial-mesenchymal transition (EMT). Here, we show that TIP60 expression abrogates cell migration and metastatic potential of breast cancer cells using in vitro and in vivo models. Mechanistically, we show that this is through its ability to destabilize DNMT1 and inhibit SNAIL2 function (SNAIL2-mediated EMT/cell migration)...
September 20, 2016: Journal of Molecular Cell Biology
Jiarui Wu
No abstract text is available yet for this article.
August 2016: Journal of Molecular Cell Biology
Lei Zhang, Feng Zhang, Tao Yang, Xizhou Zhu, Nuoyan Zheng, Hui Li, Desheng Zhu, Yan Zhu, Zhiheng Xu
No abstract text is available yet for this article.
August 2016: Journal of Molecular Cell Biology
Dashun Huang, Xiaojiao Li, Li Sun, Ping Huang, Hao Ying, Hui Wang, Jiarui Wu, Haiyun Song
The Hippo signalling pathway has a crucial role in growth control during development, and its dysregulation contributes to tumorigenesis. Recent studies uncover multiple upstream regulatory inputs into Hippo signalling, which affects phosphorylation of the transcriptional coactivator Yki/YAP/TAZ by Wts/Lats. Here we identify the p38 mitogen-activated protein kinase (MAPK) pathway as a new upstream branch of the Hippo pathway. In Drosophila, overexpression of MAPKK gene licorne (lic), or MAPKKK gene Mekk1, promotes Yki activity and induces Hippo target gene expression...
August 2016: Journal of Molecular Cell Biology
Di Wu, Jurrien Dean
No abstract text is available yet for this article.
August 2016: Journal of Molecular Cell Biology
Juhui Qiu, Xiaoying Fan, Yixia Wang, Hongbin Jin, Yixiao Song, Yang Han, Shenghong Huang, Yaping Meng, Fuchou Tang, Anming Meng
Hematopoietic stem cells (HSCs) replenish all types of blood cells. It is debating whether HSCs in adults solely originate from the aorta-gonad-mesonephros (AGM) region, more specifically, the dorsal aorta, during embryogenesis. Here, we report that somite hematopoiesis, a previously unwitnessed hematopoiesis, can generate definitive HSCs (dHSCs) in zebrafish. By transgenic lineage tracing, we found that a subset of cells within the forming somites emigrate ventromedially and mix with lateral plate mesoderm-derived primitive hematopoietic cells before the blood circulation starts...
August 2016: Journal of Molecular Cell Biology
Yusheng Liu, Xukun Lu, Junchao Shi, Xingjiang Yu, Xiaoxin Zhang, Kai Zhu, Zhaohong Yi, Enkui Duan, Lei Li
No abstract text is available yet for this article.
August 2016: Journal of Molecular Cell Biology
Yan Tang, Shu-Wen Qian, Meng-Yuan Wu, Jue Wang, Ping Lu, Xi Li, Hai-Yan Huang, Liang Guo, Xia Sun, Cong-Jian Xu, Qi-Qun Tang
The expansion of subcutaneous (SC) white adipose tissue (WAT) has beneficial effects on metabolic health. Our previous work showed an increased number of bone morphogenetic protein 4 (BMP4)-activated beige adipocytes in SC WAT, indicating a potential role of BMP4 in adipocyte recruitment. It was also demonstrated that BMP4 committed multipotent mesodermal C3H10T1/2 stem cells to the adipocyte lineage ex vivo However, the mechanism by which BMP4 regulates adipogenesis in vivo has not been clarified. In this study, we found that BMP4 stimulated de novo adipogenesis in SC WAT concomitant with enhanced blood vessel formation, thus promoting adipose tissue angiogenesis...
August 2016: Journal of Molecular Cell Biology
Hitesh Patel, Ifigeneia Stavrou, Roshan L Shrestha, Viji Draviam, Margaret C Frame, Valerie G Brunton
Loss of Kindlin 1 (Kin1) results in the skin blistering disorder Kindler Syndrome (KS), whose symptoms also include skin atrophy and reduced keratinocyte proliferation. Kin1 binds to integrins to modulate their activation and more recently it has been shown to regulate mitotic spindles and cell survival in a Plk1-dependent manner. Here we report that short-term Kin1 deletion in mouse skin results in impaired mitosis, which is associated with reduced acetylated tubulin (ac-tub) levels and cell proliferation...
August 2016: Journal of Molecular Cell Biology
Marie-Hélène Ouellette, Emmanuel Martin, Germain Lacoste-Caron, Karim Hamiche, Sarah Jenna
Collective epithelial cell migration requires the maintenance of cell-cell junctions while enabling the generation of actin-rich protrusions at the leading edge of migrating cells. Ventral enclosure of Caenorhabditis elegans embryos depends on the collective migration of anterior-positioned leading hypodermal cells towards the ventral midline where they form new junctions with their contralateral neighbours. In this study, we characterized the zygotic function of RGA-7/SPV-1, a CDC-42/Cdc42 and RHO-1/RhoA-specific Rho GTPase-activating protein, which controls the formation of actin-rich protrusions at the leading edge of leading hypodermal cells and the formation of new junctions between contralateral cells...
August 2016: Journal of Molecular Cell Biology
Yuichi Morozumi, Fayçal Boussouar, Minjia Tan, Apirat Chaikuad, Mahya Jamshidikia, Gozde Colak, Huang He, Litong Nie, Carlo Petosa, Maud de Dieuleveult, Sandrine Curtet, Anne-Laure Vitte, Clothilde Rabatel, Alexandra Debernardi, François-Loïc Cosset, Els Verhoeyen, Anouk Emadali, Norbert Schweifer, Davide Gianni, Marta Gut, Philippe Guardiola, Sophie Rousseaux, Matthieu Gérard, Stefan Knapp, Yingming Zhao, Saadi Khochbin
Although the conserved AAA ATPase and bromodomain factor, ATAD2, has been described as a transcriptional co-activator upregulated in many cancers, its function remains poorly understood. Here, using a combination of ChIP-seq, ChIP-proteomics, and RNA-seq experiments in embryonic stem cells where Atad2 is normally highly expressed, we found that Atad2 is an abundant nucleosome-bound protein present on active genes, associated with chromatin remodelling, DNA replication, and DNA repair factors. A structural analysis of its bromodomain and subsequent investigations demonstrate that histone acetylation guides ATAD2 to chromatin, resulting in an overall increase of chromatin accessibility and histone dynamics, which is required for the proper activity of the highly expressed gene fraction of the genome...
August 2016: Journal of Molecular Cell Biology
Rong Wang, Zhijing Wang, Tianlong Zhang, Jianping Ding
No abstract text is available yet for this article.
July 19, 2016: Journal of Molecular Cell Biology
Changhong Zhu, Cheng Chen, Ran Chen, Rong Deng, Xian Zhao, Hailong Zhang, Jinzhuo Duo, Qin Chen, Hui Jin, Yanli Wang, Jian Huang, Ming Xu, Jianxiu Yu
No abstract text is available yet for this article.
July 19, 2016: Journal of Molecular Cell Biology
Hu Xu, Jia-Lin Fu, Yi-Fei Miao, Chun-Jiong Wang, Qi-Fei Han, Sha Li, Shi-Zheng Huang, Sheng-Nan Du, Yu-Xiang Qiu, Ji-Chun Yang, Jan-Åke Gustafsson, Richard M Breyer, Feng Zheng, Nan-Ping Wang, Xiao-Yan Zhang, You-Fei Guan
Among the four prostaglandin E2 receptors, EP3 receptor is the one most abundantly expressed in white adipose tissue (WAT). The mouse EP3 gene gives rise to three isoforms, namely EP3α, EP3β, and EP3γ, which differ only at their C-terminal tails. To date, functions of EP3 receptor and its isoforms in WAT remain incompletely characterized. In this study, we found that the expression of all EP3 isoforms were downregulated in WAT of both db/db and high-fat diet-induced obese mice. Genetic ablation of three EP3 receptor isoforms (EP3(-/-) mice) or EP3α and EP3γ isoforms with EP3β intact (EP3β mice) led to an obese phenotype with increased food intake, decreased motor activity, reduced insulin sensitivity, and elevated serum TG...
July 19, 2016: Journal of Molecular Cell Biology
YouHua Zhang, YouDong Pan, ChangDong Lin, YaJuan Zheng, Hao Sun, HaiLong Zhang, JunLei Wang, MengYa Yuan, Tao Duan, QiaoLing Du, JianFeng Chen
Intrahepatic cholestasis of pregnancy (ICP) is a cholestatic disorder with potentially deleterious consequences for fetuses. Although a clear correlation between the elevated levels of maternal serum bile acids and deficient fetal outcome has been established in clinical practice, the underlying mechanisms remain elusive. Herein, we report that bile acids induce NF-κB pathway activation via G protein-coupled bile acid receptor 1 (Gpbar1), with consequent upregulation of inflammatory genes in trophoblasts, leading to aberrant leukocyte infiltration and inflammation in placenta...
July 8, 2016: Journal of Molecular Cell Biology
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