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Cellular and Molecular Life Sciences: CMLS

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https://www.readbyqxmd.com/read/28224204/effect-of-hypoxia-on-human-adipose-derived-mesenchymal-stem-cells-and-its-potential-clinical-applications
#1
REVIEW
Jane Ru Choi, Kar Wey Yong, Wan Kamarul Zaman Wan Safwani
Human adipose-derived mesenchymal stem cells (hASCs) are an ideal cell source for regenerative medicine due to their capabilities of multipotency and the readily accessibility of adipose tissue. They have been found residing in a relatively low oxygen tension microenvironment in the body, but the physiological condition has been overlooked in most studies. In light of the escalating need for culturing hASCs under their physiological condition, this review summarizes the most recent advances in the hypoxia effect on hASCs...
February 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28224203/nucleic-acid-sensing-pattern-recognition-receptors-in-the-development-of-colorectal-cancer-and-colitis
#2
REVIEW
Liangmei He, Yayun Chen, Yuanbing Wu, Ying Xu, Zixiang Zhang, Zhiping Liu
Colorectal cancer (CRC) is a leading cause of cancer-related deaths that is often associated with inflammation initiated by activation of pattern recognition receptors (PRRs). Nucleic acid sensing PRRs are one of the major subsets of PRRs that sense nucleic acid (DNA and RNA), mainly including some members of Toll-like receptors (TLR3, 7, 8, 9), AIM2-like receptors (AIM2, IFI16), STING, cGAS, RNA polymerase III, and DExD/H box nucleic acid helicases (such as RIG-I like receptors (RIG-I, MDA5, LPG2), DDX1, 3, 5, 7, 17, 21, 41, 60, and DHX9, 36)...
February 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28224202/germline-specific-dgcr8-knockout-in-zebrafish-using-a-back-approach
#3
Yun Liu, Zeyao Zhu, Idy H T Ho, Yujian Shi, Yuxin Xie, Jianzhen Li, Yong Zhang, Matthew T V Chan, Christopher H K Cheng
Zebrafish is an important model to study developmental biology and human diseases. However, an effective approach to achieve spatial and temporal gene knockout in zebrafish has not been well established. In this study, we have developed a new approach, namely bacterial artificial chromosome-rescue-based knockout (BACK), to achieve conditional gene knockout in zebrafish using the Cre/loxP system. We have successfully deleted the DiGeorge syndrome critical region gene 8 (dgcr8) in zebrafish germ line and demonstrated that the maternal-zygotic dgcr8 (MZdgcr8) embryos exhibit MZdicer-like phenotypes with morphological defects which could be rescued by miR-430, indicating that canonical microRNAs play critical role in early development...
February 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28220209/s-phase-checkpoint-regulations-that-preserve-replication-and-chromosome-integrity-upon-dntp-depletion
#4
REVIEW
Michele Giannattasio, Dana Branzei
DNA replication stress, an important source of genomic instability, arises upon different types of DNA replication perturbations, including those that stall replication fork progression. Inhibitors of the cellular pool of deoxynucleotide triphosphates (dNTPs) slow down DNA synthesis throughout the genome. Following depletion of dNTPs, the highly conserved replication checkpoint kinase pathway, also known as the S-phase checkpoint, preserves the functionality and structure of stalled DNA replication forks and prevents chromosome fragmentation...
February 20, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28220208/abcb4-missense-mutations-d243a-k435t-g535d-i490t-r545c-and-s978p-significantly-impair-the-lipid-floppase-and-likely-predispose-to-secondary-pathologies-in-the-human-population
#5
Edward J Andress, Michael Nicolaou, Farrell McGeoghan, Kenneth J Linton
Bile salts are natural detergents required to solubilise dietary fat and lipid soluble vitamins. They are synthesised in hepatocytes and secreted into the luminal space of the biliary tree by the bile salt export pump (BSEP), an ATP-binding cassette (ABC) transporter in the canalicular membrane. BSEP deficiency causes cytotoxic accumulation of bile salts in the hepatocyte that results in mild-to-severe forms of cholestasis. The resulting inflammation can also progress to hepatocellular cancer via a novel mechanism involving upregulation of proliferative signalling pathways...
February 20, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28220207/considerations-on-mtor-regulation-at-serine-2448-implications-for-muscle-metabolism-studies
#6
REVIEW
Vandré Casagrande Figueiredo, James F Markworth, David Cameron-Smith
The mammalian target of rapamycin (mTOR) complex exerts a pivotal role in protein anabolism and cell growth. Despite its importance, few studies adequately address the complexity of phosphorylation of the mTOR protein itself to enable conclusions to be drawn on the extent of kinase activation following this event. In particular, a large number of studies in the skeletal muscle biology field have measured Serine 2448 (Ser2448) phosphorylation as a proxy of mTOR kinase activity. However, the evidence to be described is that Ser2448 is not a measure of mTOR kinase activity nor is a target of AKT activity and instead has inhibitory effects on the kinase that is targeted by the downstream effector p70S6K in a negative feedback loop mechanism, which is evident when revisiting muscle research studies...
February 20, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28214990/interactions-between-mesenchymal-stem-cells-and-the-immune-system
#7
REVIEW
Na Li, Jinlian Hua
In addition to being multi-potent, mesenchymal stem cells (MSCs) possess immunomodulatory functions that have been investigated as potential treatments in various immune disorders. MSCs can robustly interact with cells of the innate and adaptive immune systems, either through direct cell-cell contact or through their secretome. In this review, we discuss current findings regarding the interplay between MSCs and different immune cell subsets. We also draw attention to the mechanisms involved.
February 18, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28210785/on-glioblastoma-and-the-search-for-a-cure-where-do-we-stand
#8
REVIEW
John Bianco, Chiara Bastiancich, Aleksander Jankovski, Anne des Rieux, Véronique Préat, Fabienne Danhier
Although brain tumours have been documented and recorded since the nineteenth century, 2016 marked 90 years since Percival Bailey and Harvey Cushing coined the term "glioblastoma multiforme". Since that time, although extensive developments in diagnosis and treatment have been made, relatively little improvement on prognosis has been achieved. The resilience of GBM thus makes treating this tumour one of the biggest challenges currently faced by neuro-oncology. Aggressive and robust development, coupled with difficulties of complete resection, drug delivery and therapeutic resistance to treatment are some of the main issues that this nemesis presents today...
February 17, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28210784/novel-aids-therapies-based-on-gene-editing
#9
REVIEW
Kamel Khalili, Martyn K White, Jeffrey M Jacobson
HIV/AIDS remains a major public health issue. In 2014, it was estimated that 36.9 million people are living with HIV worldwide, including 2.6 million children. Since the advent of combination antiretroviral therapy (cART), in the 1990s, treatment has been so successful that in many parts of the world, HIV has become a chronic condition in which progression to AIDS has become increasingly rare. However, while people with HIV can expect to live a normal life span with cART, lifelong medication is required and cardiovascular, renal, liver, and neurologic diseases are still possible, which continues to prompt research for a cure for HIV...
February 16, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28204846/regulation-of-end-binding-protein-eb1-in-the-control-of-microtubule-dynamics
#10
REVIEW
Anne Nehlig, Angie Molina, Sylvie Rodrigues-Ferreira, Stéphane Honoré, Clara Nahmias
The regulation of microtubule dynamics is critical to ensure essential cell functions, such as proper segregation of chromosomes during mitosis or cell polarity and migration. End-binding protein 1 (EB1) is a plus-end-tracking protein (+TIP) that accumulates at growing microtubule ends and plays a pivotal role in the regulation of microtubule dynamics. EB1 autonomously binds an extended tubulin-GTP/GDP-Pi structure at growing microtubule ends and acts as a molecular scaffold that recruits a large number of regulatory +TIPs through interaction with CAP-Gly or SxIP motifs...
February 15, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28204845/mirnas-target-databases-developmental-methods-and-target-identification-techniques-with-functional-annotations
#11
REVIEW
Nagendra Kumar Singh
PURPOSE: microRNA (miRNA) regulates diverse biological mechanisms and metabolisms in plants and animals. Thus, the discoveries of miRNA has revolutionized the life sciences and medical research.The miRNA represses and cleaves the targeted mRNA by binding perfect or near perfect or imperfect complementary base pairs by RNA-induced silencing complex (RISC) formation during biogenesis process. One miRNA interacts with one or more mRNA genes and vice versa, hence takes part in causing various diseases...
February 15, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28197669/clearance-of-cerebral-a%C3%AE-in-alzheimer-s-disease-reassessing-the-role-of-microglia-and-monocytes
#12
REVIEW
Leah Zuroff, David Daley, Keith L Black, Maya Koronyo-Hamaoui
Deficiency in cerebral amyloid β-protein (Aβ) clearance is implicated in the pathogenesis of the common late-onset forms of Alzheimer's disease (AD). Accumulation of misfolded Aβ in the brain is believed to be a net result of imbalance between its production and removal. This in turn may trigger neuroinflammation, progressive synaptic loss, and ultimately cognitive decline. Clearance of cerebral Aβ is a complex process mediated by various systems and cell types, including vascular transport across the blood-brain barrier, glymphatic drainage, and engulfment and degradation by resident microglia and infiltrating innate immune cells...
February 14, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28197668/mechanisms-controlling-germline-cyst-breakdown-and-primordial-follicle-formation
#13
REVIEW
Chao Wang, Bo Zhou, Guoliang Xia
In fetal females, oogonia proliferate immediately after sex determination. The progress of mitosis in oogonia proceeds so rapidly that the incompletely divided cytoplasm of the sister cells forms cysts. The oogonia will then initiate meiosis and arrest at the diplotene stage of meiosis I, becoming oocytes. Within each germline cyst, oocytes with Balbiani bodies will survive after cyst breakdown (CBD). After CBD, each oocyte is enclosed by pre-granulosa cells to form a primordial follicle (PF). Notably, the PF pool formed perinatally will be the sole lifelong oocyte source of a female...
February 14, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28197667/discovery-and-progress-of-direct-cardiac-reprogramming
#14
REVIEW
Hidenori Kojima, Masaki Ieda
Cardiac disease remains a major cause of death worldwide. Direct cardiac reprogramming has emerged as a promising approach for cardiac regenerative therapy. After the discovery of MyoD, a master regulator for skeletal muscle, other single cardiac reprogramming factors (master regulators) have been sought. Discovery of cardiac reprogramming factors was inspired by the finding that multiple, but not single, transcription factors were needed to generate induced pluripotent stem cells (iPSCs) from fibroblasts. We first reported a combination of cardiac-specific transcription factors, Gata4, Mef2c, and Tbx5 (GMT), that could convert mouse fibroblasts into cardiomyocyte-like cells, which were designated as induced cardiomyocyte-like cells (iCMs)...
February 14, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28188344/skeletal-muscle-secretome-in-duchenne-muscular-dystrophy-a-pivotal-anti-inflammatory-role-of-adiponectin
#15
S Lecompte, M Abou-Samra, R Boursereau, L Noel, S M Brichard
BACKGROUND: Persistent inflammation exacerbates the progression of Duchenne muscular dystrophy (DMD). The hormone, adiponectin (ApN), which is decreased in the metabolic syndrome, exhibits anti-inflammatory properties on skeletal muscle and alleviates the dystrophic phenotype of mdx mice. Here, we investigate whether ApN retains its anti-inflammatory action in myotubes obtained from DMD patients. We unravel the underlying mechanisms by studying the secretome and the early events of ApN...
February 10, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28188343/mll5-kmt2e-structure-function-and-clinical-relevance
#16
REVIEW
Xiaoming Zhang, Wisna Novera, Yan Zhang, Lih-Wen Deng
The mixed lineage leukemia (MLL) family of genes, also known as the lysine N-methyltransferase 2 (KMT2) family, are homologous to the evolutionarily conserved trithorax group that plays critical roles in the regulation of homeotic gene (HOX) expression and embryonic development. MLL5, assigned as KMT2E on the basis of its SET domain homology, was initially categorized under MLL (KMT2) family together with other six SET methyltransferase domain proteins (KMT2A-2D and 2F-2G). However, emerging evidence suggests that MLL5 is distinct from the other MLL (KMT2) family members, and the protein it encodes appears to lack intrinsic histone methyltransferase (HMT) activity towards histone substrates...
February 10, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28188342/the-equilibrium-of-ubiquitination-and-deubiquitination-at-plk1-regulates-sister-chromatid-separation
#17
REVIEW
Junjun Liu, Chuanmao Zhang
PLK1 regulates almost every aspect of mitotic events, including mitotic entry, spindle assembly, chromosome alignment, sister chromatid segregation, metaphase-anaphase transition, cytokinesis, etc. In regulating the chromosome alignment and sister chromatid segregation, PLK1 has to be localized to and removed from kinetochores at the right times, and the underlying mechanism that regulates PLK1 both spatially and temporally only became clearer recently. It has been found that deubiquitination and ubiquitination of PLK1 are responsible for its localization to and dissociation from the kinetochores, respectively...
February 10, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28180926/wip1-phosphatase-is-a-critical-regulator-of-adipogenesis-through-dephosphorylating-ppar%C3%AE-serine-112
#18
Dahu Li, Lijun Zhang, Lun Xu, Lili Liu, Yunling He, Yiyao Zhang, Xin Huang, Tong Zhao, Liying Wu, Yongqi Zhao, Kuiwu Wu, Hui Li, Xiao Yu, Taiyun Zhao, Shenghui Gong, Ming Fan, Lingling Zhu
WIP1, as a critical phosphatase, plays many important roles in various physiological and pathological processes through dephosphorylating different substrate proteins. However, the functions of WIP1 in adipogenesis and fat accumulation are not clear. Here, we report that WIP1-deficient mice show impaired body weight growth, dramatically decreased fat mass, and significantly reduced triglyceride and leptin levels in circulation. This dysregulation of adipose development caused by the deletion of WIP1 occurs as early as adipogenesis...
February 8, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28175960/erratum-to-phospholipid-flippases-attenuate-lps-induced-tlr4-signaling-by-mediating-endocytic-retrieval-of-toll-like-receptor-4
#19
Vincent A van der Mark, Mohammed Ghiboub, Casper Marsman, Jing Zhao, Remco van Dijk, Johan K Hiralall, Kam S Ho-Mok, Zoë Castricum, Wouter J de Jonge, Ronald P J Oude Elferink, Coen C Paulusma
No abstract text is available yet for this article.
February 7, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28168446/comparing-the-rules-of-engagement-of-androgen-and-glucocorticoid-receptors
#20
REVIEW
Frank Claessens, Steven Joniau, Christine Helsen
Despite the diverse physiological activities of androgens and glucocorticoids, the corresponding receptors are very close members of the nuclear-receptor super family. Their action mechanisms show striking similarities, since both receptors recognize very similar DNA-response elements and recruit the same coactivators to their target genes. The specificity of the responses lies mainly in the tissue-specific expression of the receptors and in their ligand specificity. In cells, where both receptors are expressed, the mechanisms leading to the difference in target genes are less obvious...
February 6, 2017: Cellular and Molecular Life Sciences: CMLS
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