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https://www.readbyqxmd.com/read/29352085/the-expression-of-bacteriocin-production-and-self-resistance-in-lactobacillus-brevis-174a-is-mediated-by-two-regulatory-proteins
#1
Masafumi Noda, Rumi Miyauchi, Narandalai Danshiitsoodol, Yasuyuki Matoba, Takanori Kumagai, Masanori Sugiyama
We have previously shown that a lactic acid bacterium Lactobacillus (Lb.) brevis 174A isolated from a Citrus iyo fruit produces bacteriocin designated brevicin 174A, which is comprised of two antibacterial polypeptides (designated brevicin 174A-β and 174A-γ). We have also found a gene cluster, composed of eight open reading frames (ORFs), that contains genes for the biosynthesis of brevicin 174A, self-resistance to its own bacteriocin, and two transcriptional regulatory proteins.Some lactic acid bacterial strains have a system to start the production of bacteriocin at an adequate stage of the growth...
January 19, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29351106/the-role-of-patient-registries-for-rare-genetic-lipid-disorders
#2
David M Ng, Amanda J Hooper, Matthew I Bellgard, John R Burnett
PURPOSE OF REVIEW: We review the role, utility and current status of patient registries for rare genetic lipid disorders. RECENT FINDINGS: The creation and maintenance of rare genetic lipid disorder patient registries is critical for disease monitoring, improving clinical best practice, facilitating research and enabling the development of novel therapeutics. An open-source disease registry platform, termed the Rare Disease Registry Framework, has been developed, optimized and deployed for homozygous familial hypercholesterolemia...
January 17, 2018: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/29351004/duchenne-muscular-dystrophy-dmd-an-updated-review-of-common-available-therapies
#3
Arash Salmaninejad, Saeed Farajzadeh Valilou, Hadi Bayat, Nader Ebadi, Abdolreza Daraei, Meysam Yousefi, Abolfazl Nesaei, Majid Mojarrad
Duchenne muscular dystrophy (DMD) is a lethal progressive pediatric muscle disorder and genetically inherited as an X-linked disease that caused by mutations in the dystrophin gene. DMD leads to progressive muscle weakness, degeneration, and wasting; finally, follows with the premature demise in affected individual's due to respiratory and/or cardiac failure typically by age of 30. For decades, scientists tried massively to find an effective therapy method, but there is no absolute cure currently for patients with DMD, nevertheless, recent advanced progressions on the treatment of DMD will be hopeful in the future...
January 19, 2018: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29350584/developing-standard-operating-procedures-for-gene-drive-research-in-disease-vector-mosquitoes
#4
Zach N Adelman, David Pledger, Kevin M Myles
The biosafety landscape for studies involving gene drive in arthropods is at a critical juncture. Numerous arthropod species represent potential targets for gene-drive-based population suppression or replacement, due to the large number of arthropods that transmit diseases, damage crops, or act as deleterious invasive species. Containment measures for gene drive research in arthropods have been discussed in the literature, but the importance of developing safe and effective standard operating procedures (SOPs) for these types of experiments has not been adequately addressed...
January 19, 2018: Pathogens and Global Health
https://www.readbyqxmd.com/read/29349904/lysosome-remodelling-and-adaptation-during-phagocyte-activation
#5
REVIEW
Victoria E B Hipolito, Erika Ospina-Escobar, Roberto J Botelho
Lysosomes are acidic and hydrolytic organelles responsible for receiving and digesting cargo acquired during endocytosis, phagocytosis, and autophagy. For macrophages and dendritic cells, the lysosome is kingpin, playing a direct role in microbe killing and antigen processing for presentation. Strikingly, the historic view that lysosomes are homogeneous and static organelles is being replaced with a more elegant paradigm, in which lysosomes are heterogeneous, dynamic and respond to cellular needs. For example, lysosomes are signaling platforms that integrate stress detection and molecular decision hubs like mTORC1 and AMPK to modulate cellular activity...
January 19, 2018: Cellular Microbiology
https://www.readbyqxmd.com/read/29348807/discovery-of-spiro-oxazolidinediones-as-selective-orally-bioavailable-inhibitors-of-p300-cbp-histone-acetyltransferases
#6
Michael R Michaelides, Arthur Kluge, Michael Patane, John H Van Drie, Ce Wang, T Matthew Hansen, Roberto M Risi, Robert Mantei, Carmen Hertel, Kannan Karukurichi, Alexandre Nesterov, David McElligott, Peter de Vries, J William Langston, Philip A Cole, Ronen Marmorstein, Hong Liu, Loren Lasko, Kenneth D Bromberg, Albert Lai, Edward A Kesicki
p300 and its paralog CBP can acetylate histones and other proteins and have been implicated in a number of diseases characterized by aberrant gene activation, such as cancer. A novel, highly selective, orally bioavailable histone acetyltransferase (HAT) domain inhibitor has been identified through virtual ligand screening and subsequent optimization of a unique hydantoin screening hit. Conformational restraint in the form of a spirocyclization followed by substitution with a urea led to a significant improvement in potency...
January 11, 2018: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29347847/combining-cell-and-gene-therapy-to-advance-cardiac-regeneration
#7
Pina Marotta, Eleonora Cianflone, Iolanda Aquila, Carla Vicinanza, Mariangela Scalise, Fabiola Marino, Teresa Mancuso, Michele Torella, Ciro Indolfi, Daniele Torella
The characterization of multipotent endogenous cardiac stem cells (eCSCs) and the breakthroughs of somatic cell reprogramming to boost cardiomyocyte replacement have fostered the prospect of achieving functional heart repair/regeneration. Areas covered: Allogeneic CSC therapy through its paracrine stimulation of the endogenous resident reparative/regenerative process produces functional meaningful myocardial regeneration in pre-clinical porcine myocardial infarction models and is currently tested in the first-in-man human trial...
January 19, 2018: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/29346527/progesterone-effects-on-extracellular-vesicles-in-the-sheep-uterus
#8
Gregory W Burns, Kelsey E Brooks, Eleanore V O'Neil, Darren E Hagen, Susanta K Behura, Thomas E Spencer
Progesterone (P4) acts via the endometrium to promote conceptus growth and implantation for pregnancy establishment. Many cells release extracellular vesicles (EVs) that are membrane-bound vesicles of endosomal and plasma membrane origin. In sheep, endometrial-derived EVs were found to traffic to the conceptus trophectoderm. Thus, EVs are hypothesized to be an important mode of intercellular communication by transferring select RNAs, proteins, and lipids between the endometrium and conceptus. Electron microscopy analysis found that the endometrial luminal and glandular epithelia were the primary source of EVs in the uterus of cyclic sheep...
January 16, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29345310/a-potential-role-of-knockout-serum-replacement-as-a-porcine-follicular-fluid-substitute-for-in-vitro-maturation-lipid-metabolism-approach
#9
Jun-Xue Jin, Sanghoon Lee, Erif Maha Nugraha Setyawan, Anukul Taweechaipaisankul, Geon A Kim, Ho Jae Han, Curie Ahn, Byeong Chun Lee
The use of supplements, such as porcine follicular fluid (pFF), fetal bovine serum and human serum albumin are widely used during in vitro maturation (IVM) in different species but these supplements contain undefined components that cause technical difficulties in standardization and influence the efficiency of IVM. Knockout serum replacement (KSR) is a synthetic protein source, without any undefined growth factors or differentiation-promoting factors. Therefore, it is feasible to use KSR as a defined component for avoiding effects of unknown molecules in an IVM system...
January 18, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29344811/metabolic-evolution-and-a-comparative-omics-analysis-of-corynebacterium-glutamicum-for-putrescine-production
#10
Zhen Li, Yu-Ping Shen, Xuan-Long Jiang, Li-Shen Feng, Jian-Zhong Liu
Putrescine is widely used in the industrial production of bioplastics, pharmaceuticals, agrochemicals, and surfactants. Because the highest titer of putrescine is much lower than that of its precursor L-ornithine reported in microorganisms to date, further work is needed to increase putrescine production in Corynebacterium glutamicum. We first compared 7 ornithine decarboxylase genes and found that the Enterobacter cloacae ornithine decarboxylase gene speC1 was most suitable for putrescine production in C. glutamicum...
January 17, 2018: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29344330/developments-in-rare-bone-diseases-and-mineral-disorders
#11
REVIEW
Siobhan Bacon, Rachel Crowley
In the last decade, there have been a number of significant advances made in the field of rare bone diseases. In this review, we discuss the expansion of the classification system for osteogenesis imperfecta (OI) and the resultant increase in therapeutic options available for management of OI. Bisphosphonates remain the most widely used intervention for OI, although the effect on fracture rate reduction is equivocal. We review the other therapies showing promising results, including denosumab, teriparatide, sclerostin, transforming growth factor β inhibition and gene targeted approaches...
January 2018: Therapeutic Advances in Chronic Disease
https://www.readbyqxmd.com/read/29343791/single-plasmid-systems-for-inducible-dual-protein-expression-and-for-crispr-cas9-crispri-gene-regulation-in-lactic-acid-bacterium-lactococcus-lactis
#12
Aleš Berlec, Katja Škrlec, Janja Kocjan, Maria Olenic, Borut Štrukelj
Lactococcus lactis is a food-grade lactic acid bacterium that is used in the dairy industry as a cell factory and as a host for recombinant protein expression. The nisin-controlled inducible expression (NICE) system is frequently applied in L. lactis; however new tools for its genetic modification are highly desirable. In this work NICE was adapted for dual protein expression. Plasmid pNZDual, that contains two nisin promoters and multiple cloning sites (MCSs), and pNZPolycist, that contains a single nisin promoter and two MCSs separated by the ribosome binding site, were constructed...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343581/the-5-untranslated-region-of-the-major-immediate-early-mrna-is-necessary-for-efficient-human-cytomegalovirus-replication
#13
Kyle C Arend, Erik M Lenarcic, Nathaniel J Moorman
The human cytomegalovirus (HCMV) IE1 and IE2 proteins are critical regulators of virus replication. Both proteins are needed to efficiently establish lytic infection, and nascent expression of IE1 and IE2 is critical for reactivation from latency. The regulation of IE1 and IE2 protein expression is thus a central event in the outcome of HCMV infection. Transcription of the primary transcript encoding both IE1 and IE2 is well studied, but relatively little is known about the post-transcriptional mechanisms that control IE1 and IE2 protein synthesis...
January 17, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29343286/diagnosis-and-management-of-transthyretin-familial-amyloid-polyneuropathy-in-japan-red-flag-symptom-clusters-and-treatment-algorithm
#14
REVIEW
Yoshiki Sekijima, Mitsuharu Ueda, Haruki Koike, Sonoko Misawa, Tomonori Ishii, Yukio Ando
Hereditary ATTR (ATTRm) amyloidosis (also called transthyretin-type familial amyloid polyneuropathy [ATTR-FAP]) is an autosomal-dominant, adult-onset, rare systemic disorder predominantly characterized by irreversible, progressive, and persistent peripheral nerve damage. TTR gene mutations (e.g. replacement of valine with methionine at position 30 [Val30Met (p.Val50Met)]) lead to destabilization and dissociation of TTR tetramers into variant TTR monomers, which form amyloid fibrils that deposit in peripheral nerves and various organs, giving rise to peripheral and autonomic neuropathy and several non-disease specific symptoms...
January 17, 2018: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/29340084/crispr-cas9-hdr-system-enhances-aqp1-gene-expression
#15
Zhimin Wang, Yaohe Wang, Songling Wang, Li-Rong Zhang, Na Zhang, Zhenguo Cheng, Qingshi Liu, Kelly J Shields, Baoli Hu, Michael J Passineau
Ionizing radiation (IR) isthe primarytherapeutic tool to treat patients with cancerous lesions located in the head and neck. In many patients, IR results in irreversible and severe salivary gland dysfunction or xerostomia. Currently there are no effective treatment options to reduce the effects of xerostomia. More recently, salivary gland gene therapy utilizing the water-specific protein aquaporin 1 (AQP1) has been of great interest to potentially correct salivary dysfunction. In this study, we used CRISPR-Cas9 gene editing along with the endogenous promoter of AQP1 within theHEK293 and MDCK cell lines...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339452/effects-of-colostrum-feeding-method-and-oral-igf1-on-porcine-uterine-development
#16
Ashley F George, Kathleen M Rahman, Dori J Miller, Anne A Wiley, Meredith E Camp, Frank Bartol, Carol A Bagnell
Nursing ensures lactocrine delivery of maternally-derived, milk-borne bioactive factors to offspring, which affects postnatal development of female reproductive tract tissues. Disruption of lactocrine communication for two days from birth (postnatal day = PND 0) by feeding milk replacer in lieu of nursing or consumption of colostrum alters porcine uterine gene expression globally by PND 2 and inhibits uterine gland genesis by PND 14. Here, objectives were to determine effects of: 1) nursing or milk replacer feeding from birth; 2) a single dose of colostrum or milk replacer and method of feeding; and 3) a single feeding of colostrum or milk replacer, with or without oral supplementation of IGF1, administered at birth on aspects of porcine uterine development at 12 h postnatally...
January 16, 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29339103/comparative-review-of-adult-midbrain-and-striatum-neurogenesis-with-classical-neurogenesis
#17
REVIEW
Parisa Farzanehfar
Parkinson's Disease (PD) motor symptoms are caused by loss of dopamine (DA) neurons in the substantia nigra pars compacta (SNc) of the midbrain. Dopamine cell replacement therapy (DA CRT), either by cell transplantation or endogenous repair, has been a potential treatment to replace dead cells and improve PD motor symptoms. Adult midbrain and striatum have been studied for many years to find evidence of neurogenesis. Although the literature is controversial, recent research has revived the possibility of neurogenesis here...
January 12, 2018: Neuroscience Research
https://www.readbyqxmd.com/read/29336361/muscle-magnetic-resonance-imaging-for-the-differentiation-of-multiple-acyl-coa-dehydrogenase-deficiency-and-immune-mediated-necrotizing-myopathy
#18
Ya-Wen Zhao, Xiu-Juan Liu, Wei Zhang, Zhao-Xia Wang, Yun Yuan
BACKGROUND: Clinically, it is difficult to differentiate multiple acyl-CoA dehydrogenase deficiency (MADD) from immune-mediated necrotizing myopathy (IMNM) because they display similar symptoms. This study aimed to determine whether muscle magnetic resonance imaging (MRI) could be used for differential diagnosis between MADD and IMNM. METHODS: The study evaluated 25 MADD patients, confirmed by muscle biopsy and ETFDH gene testing, and 30 IMNM patients, confirmed by muscle biopsy...
January 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29335801/igm-augments-complement-bactericidal-activity-with-serum-from-a-patient-with-a-novel-cd79a-mutation
#19
Jeroen D Langereis, Stefanie S Henriet, Saskia Kuipers, Corry M R Weemaes, Mirjam van der Burg, Marien I de Jonge, Michiel van der Flier
Antibody replacement therapy for patients with antibody deficiencies contains only IgG. As a result, concurrent IgM and IgA deficiency present in a large proportion of antibody deficient patients persists. Especially patients with IgM deficiency remain at risk for recurrent infections of the gastrointestinal and respiratory tract. The lack of IgM in the current IgG replacement therapy is likely to contribute to the persistence of these mucosal infections because this antibody class is especially important for complement activation on the mucosal surface...
January 15, 2018: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/29335068/imprinted-gene-zinc-finger-protein-127-is-a-novel-regulator-of-master-pluripotency-transcription-factor-oct4
#20
Yoo-Wook Kwon, Hyo-Suk Ahn, Joo-Young Park, Han-Mo Yang, Hyun-Jai Cho, Hyo-Soo Kim
Induced pluripotent stem cells (iPSCs) show great promise for replacing current stem cell therapies in the field of regenerative medicine. However, the original method for cellular reprogramming, involving four exogenous transcription factors, is characterized by low efficiency. Here, we focused on using epigenetic modifications to enhance the reprogramming efficiency. We hypothesized that there would be a new reprogramming factor involved in DNA demethylation, acting on the promoters of pluripotency-related genes...
January 16, 2018: BMB Reports
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