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Cellular and Molecular Life Sciences: CMLS

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https://www.readbyqxmd.com/read/28643167/microbiome-probiotics-and-neurodegenerative-diseases-deciphering-the-gut-brain-axis
#1
REVIEW
Susan Westfall, Nikita Lomis, Imen Kahouli, Si Yuan Dia, Surya Pratap Singh, Satya Prakash
The gut microbiota is essential to health and has recently become a target for live bacterial cell biotherapies for various chronic diseases including metabolic syndrome, diabetes, obesity and neurodegenerative disease. Probiotic biotherapies are known to create a healthy gut environment by balancing bacterial populations and promoting their favorable metabolic action. The microbiota and its respective metabolites communicate to the host through a series of biochemical and functional links thereby affecting host homeostasis and health...
June 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28643166/structural-disorder-in-plant-proteins-where-plasticity-meets-sessility
#2
REVIEW
Alejandra A Covarrubias, Cesar L Cuevas-Velazquez, Paulette S Romero-Pérez, David F Rendón-Luna, Caspar C C Chater
Plants are sessile organisms. This intriguing nature provokes the question of how they survive despite the continual perturbations caused by their constantly changing environment. The large amount of knowledge accumulated to date demonstrates the fascinating dynamic and plastic mechanisms, which underpin the diverse strategies selected in plants in response to the fluctuating environment. This phenotypic plasticity requires an efficient integration of external cues to their growth and developmental programs that can only be achieved through the dynamic and interactive coordination of various signaling networks...
June 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28643165/molecularly-targeted-therapies-for-p53-mutant-cancers
#3
REVIEW
Dekuang Zhao, William M Tahaney, Abhijit Mazumdar, Michelle I Savage, Powel H Brown
The tumor suppressor p53 is lost or mutated in approximately half of human cancers. Mutant p53 not only loses its anti-tumor transcriptional activity, but also often acquires oncogenic functions to promote tumor proliferation, invasion, and drug resistance. Traditional strategies have been taken to directly target p53 mutants through identifying small molecular compounds to deplete mutant p53, or to restore its tumor suppressive function. Accumulating evidence suggest that cancer cells with mutated p53 often exhibit specific functional dependencies on secondary genes or pathways to survive, providing alternative targets to indirectly treat p53-mutant cancers...
June 22, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28638936/nuclear-receptors-in-neural-stem-progenitor-cell-homeostasis
#4
REVIEW
Dimitrios Gkikas, Matina Tsampoula, Panagiotis K Politis
In the central nervous system, embryonic and adult neural stem/progenitor cells (NSCs) generate the enormous variety and huge numbers of neuronal and glial cells that provide structural and functional support in the brain and spinal cord. Over the last decades, nuclear receptors and their natural ligands have emerged as critical regulators of NSC homeostasis during embryonic development and adult life. Furthermore, substantial progress has been achieved towards elucidating the molecular mechanisms of nuclear receptors action in proliferative and differentiation capacities of NSCs...
June 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28638935/jip1-and-jip3-cooperate-to-mediate-trkb-anterograde-axonal-transport-by-activating-kinesin-1
#5
Tao Sun, Yuan Li, Ting Li, Huixian Ma, Yunyun Guo, Xingyu Jiang, Ming Hou, Shuhong Huang, Zheyu Chen
Long-range anterograde axonal transport of TrkB is important for neurons to exert appropriate BDNF responses. TrkB anterograde axonal delivery is mediated by kinesin-1, which associates with TrkB via the adaptor protein JIP3 or the Slp1/Rab27B/CRMP-2 protein complex. However, little is known about the activation mechanisms of TrkB-loaded kinesin-1. Here, we show that JIP1 mediates TrkB anterograde axonal transport using JIP1 knockout mice, sciatic nerve ligation analysis and live imaging. Next, we proved that JIP1 and JIP3 cooperate to mediate TrkB anterograde axonal transport...
June 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28634681/microtubule-affinity-regulating-kinases-are-potential-druggable-targets-for-alzheimer-s-disease
#6
REVIEW
Narendran Annadurai, Khushboo Agrawal, Petr Džubák, Marián Hajdúch, Viswanath Das
Alzheimer's disease (AD) is a progressive neurodegenerative disorder that affects normal functions of the brain. Currently, AD is one of the leading causes of death in developed countries and the only one of the top ten diseases without a means to prevent, cure, or significantly slow down its progression. Therefore, newer therapeutic concepts are urgently needed to improve survival and the quality of life of AD patients. Microtubule affinity-regulating kinases (MARKs) regulate tau-microtubule binding and play a crucial role in neurons...
June 20, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28631009/methods-of-probing-the-interactions-between-small-molecules-and-disordered-proteins
#7
REVIEW
Gabriella T Heller, Francesco A Aprile, Michele Vendruscolo
It is generally recognized that a large fraction of the human proteome is made up of proteins that remain disordered in their native states. Despite the fact that such proteins play key biological roles and are involved in many major human diseases, they still represent challenging targets for drug discovery. A major bottleneck for the identification of compounds capable of interacting with these proteins and modulating their disease-promoting behaviour is the development of effective techniques to probe such interactions...
June 19, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28631008/regulation-of-neural-circuit-formation-by-protocadherins
#8
REVIEW
Stacey L Peek, Kar Men Mah, Joshua A Weiner
The protocadherins (Pcdhs), which make up the most diverse group within the cadherin superfamily, were first discovered in the early 1990s. Data implicating the Pcdhs, including ~60 proteins encoded by the tandem Pcdha, Pcdhb, and Pcdhg gene clusters and another ~10 non-clustered Pcdhs, in the regulation of neural development have continually accumulated, with a significant expansion of the field over the past decade. Here, we review the many roles played by clustered and non-clustered Pcdhs in multiple steps important for the formation and function of neural circuits, including dendrite arborization, axon outgrowth and targeting, synaptogenesis, and synapse elimination...
June 19, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28631007/how-schwann-cells-facilitate-cancer-progression-in-nerves
#9
REVIEW
Sylvie Deborde, Richard J Wong
Recent studies have demonstrated a critical role for nerves in enabling tumor progression. The association of nerves with cancer cells is well established for a variety of malignant tumors, including pancreatic, prostate and the head and neck cancers. This association is often correlated with poor prognosis. A strong partnership between cancer cells and nerve cells leads to both cancer progression and expansion of the nerve network. This relationship is supported by molecular pathways related to nerve growth and repair...
June 19, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28624967/routes-and-machinery-of-primary-cilium-biogenesis
#10
REVIEW
Miguel Bernabé-Rubio, Miguel A Alonso
Primary cilia are solitary, microtubule-based protrusions of the cell surface that play fundamental roles as photosensors, mechanosensors and biochemical sensors. Primary cilia dysfunction results in a long list of developmental and degenerative disorders that combine to give rise to a large spectrum of human diseases affecting almost any major body organ. Depending on the cell type, primary ciliogenesis is initiated intracellularly, as in fibroblasts, or at the cell surface, as in renal polarized epithelial cells...
June 17, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28624966/molecular-mechanisms-underlying-th1-like-treg-generation-and-function
#11
REVIEW
Alexandra Kitz, Margarita Dominguez-Villar
Since their 're-discovery' more than two decades ago, FOXP3(+) regulatory T cells (Tregs) have been an important subject of investigation in the biomedical field and our understanding of the mechanisms that drive their phenotype and function in health and disease has advanced tremendously. During the past few years it has become clear that Tregs are not a terminally differentiated population but show some degree of plasticity, and can, under specific environmental conditions, acquire the phenotype of effector T cells...
June 17, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28623510/the-implication-of-neuronimmunoendocrine-nie-modulatory-network-in-the-pathophysiologic-process-of-parkinson-s-disease
#12
REVIEW
Yan Shen, Xingfang Guo, Chao Han, Fang Wan, Kai Ma, Shiyi Guo, Luxi Wang, Yun Xia, Ling Liu, Zhicheng Lin, Jinsha Huang, Nian Xiong, Tao Wang
Parkinson's disease (PD) is a progressive neurodegenerative disorder implicitly marked by the substantia nigra dopaminergic neuron degeneration and explicitly characterized by the motor and non-motor symptom complexes. Apart from the nigrostriatal dopamine depletion, the immune and endocrine study findings are also frequently reported, which, in fact, have helped to broaden the symptom spectrum and better explain the pathogenesis and progression of PD. Nevertheless, based on the neural, immune, and endocrine findings presented above, it is still difficult to fully recapitulate the pathophysiologic process of PD...
June 16, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28623509/telomerase-and-drug-resistance-in-cancer
#13
REVIEW
Natalia Lipinska, Aleksandra Romaniuk, Anna Paszel-Jaworska, Ewa Toton, Przemyslaw Kopczynski, Blazej Rubis
It is well known that a decreased expression or inhibited activity of telomerase in cancer cells is accompanied by an increased sensitivity to some drugs (e.g., doxorubicin, cisplatin, or 5-fluorouracil). However, the mechanism of the resistance resulting from telomerase alteration remains elusive. There are theories claiming that it might be associated with telomere shortening, genome instability, hTERT translocation, mitochondria functioning modulation, or even alterations in ABC family gene expression. However, association of those mechanisms, i...
June 16, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28612218/collective-cell-migration-has-distinct-directionality-and-speed-dynamics
#14
Yan Zhang, Guoqing Xu, Rachel M Lee, Zijie Zhu, Jiandong Wu, Simon Liao, Gong Zhang, Yaohui Sun, Alex Mogilner, Wolfgang Losert, Tingrui Pan, Francis Lin, Zhengping Xu, Min Zhao
When a constraint is removed, confluent cells migrate directionally into the available space. How the migration directionality and speed increase are initiated at the leading edge and propagate into neighboring cells are not well understood. Using a quantitative visualization technique-Particle Image Velocimetry (PIV)-we revealed that migration directionality and speed had strikingly different dynamics. Migration directionality increases as a wave propagating from the leading edge into the cell sheet, while the increase in cell migration speed is maintained only at the leading edge...
June 13, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28612217/ox40-promotes-obesity-induced-adipose-inflammation-and-insulin-resistance
#15
Bing Liu, Hengchi Yu, Guangyong Sun, Xiaojing Sun, Hua Jin, Chunpan Zhang, Wen Shi, Dan Tian, Kai Liu, Hufeng Xu, Xinmin Li, Jie Yin, Xu Hong, Dong Zhang
Adaptive immunity plays a critical role in IR and T2DM development; however, the biological mechanisms linking T cell costimulation and glucose metabolism have not been fully elucidated. In this study, we demonstrated that the costimulatory molecule OX40 controls T cell activation and IR development. Inflammatory cell accumulation and enhanced proinflammatory gene expression, as well as high OX40 expression levels on CD4(+) T cells, were observed in the adipose tissues of mice with diet-induced obesity. OX40-KO mice exhibited significantly less weight gain and lower fasting glucose levels than those of WT mice, without obvious adipose tissue inflammation...
June 13, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28612216/to-be-disordered-or-not-to-be-disordered-is-that-still-a-question-for-proteins-in-the-cell
#16
REVIEW
Kris Pauwels, Pierre Lebrun, Peter Tompa
There is ample evidence that many proteins or regions of proteins lack a well-defined folded structure under native-like conditions. These are called intrinsically disordered proteins (IDPs) or intrinsically disordered regions (IDRs). Whether this intrinsic disorder is also their main structural characteristic in living cells has been a matter of intense debate. The structural analysis of IDPs became an important challenge also because of their involvement in a plethora of human diseases, which made IDPs attractive targets for therapeutic development...
June 13, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28601984/persistent-coxsackievirus-b4-infection-induces-microrna-dysregulation-in-human-pancreatic-cells
#17
Ilka Engelmann, Enagnon K Alidjinou, Antoine Bertin, Johann Bossu, Céline Villenet, Martin Figeac, Famara Sane, Didier Hober
Enterovirus infections are implicated in the development of type 1 diabetes (T1D). MicroRNAs as regulators of gene expression are involved in many physiological and pathological processes. Given that viral infections dysregulate cellular microRNAs, we investigated the impact of persistent coxsackievirus B4 infection on microRNA expression of human pancreatic cells. Next-generation sequencing was used to determine microRNA expression in PANC-1 cells persistently infected (for several weeks) with coxsackievirus B4 and uninfected control cells...
June 10, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28601983/functions-of-intrinsic-disorder-in-transmembrane-proteins
#18
REVIEW
Magnus Kjaergaard, Birthe B Kragelund
Intrinsic disorder is common in integral membrane proteins, particularly in the intracellular domains. Despite this observation, these domains are not always recognized as being disordered. In this review, we will discuss the biological functions of intrinsically disordered regions of membrane proteins, and address why the flexibility afforded by disorder is mechanistically important. Intrinsically disordered regions are present in many common classes of membrane proteins including ion channels and transporters; G-protein coupled receptors (GPCRs), receptor tyrosine kinases and cytokine receptors...
June 10, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28600653/how-order-and-disorder-within-paramyxoviral-nucleoproteins-and-phosphoproteins-orchestrate-the-molecular-interplay-of-transcription-and-replication
#19
REVIEW
Sonia Longhi, Louis-Marie Bloyet, Stefano Gianni, Denis Gerlier
In this review, we summarize computational and experimental data gathered so far showing that structural disorder is abundant within paramyxoviral nucleoproteins (N) and phosphoproteins (P). In particular, we focus on measles, Nipah, and Hendra viruses and highlight both commonalities and differences with respect to the closely related Sendai virus. The molecular mechanisms that control the disorder-to-order transition undergone by the intrinsically disordered C-terminal domain (NTAIL) of their N proteins upon binding to the C-terminal X domain (XD) of the homologous P proteins are described in detail...
June 9, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28600652/wallerian-demyelination-chronicle-of-a-cellular-cataclysm
#20
REVIEW
Nicolas Tricaud, Hwan Tae Park
Wallerian demyelination is characteristic of peripheral nerve degeneration after traumatic injury. After axonal degeneration, the myelinated Schwann cell undergoes a stereotypical cellular program that results in the disintegration of the myelin sheath, a process termed demyelination. In this review, we chronologically describe this program starting from the late and visible features of myelin destruction and going backward to the initial molecular steps that trigger the nuclear reprogramming few hours after injury...
June 9, 2017: Cellular and Molecular Life Sciences: CMLS
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