intestinal cell Articles
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Evaluating Microbiome Therapies with Intestinal Cell Models
The microbiome has been shown to play roles in many different disease processes and is implicated in many more, from infectious and gastrointestinal diseases to autoimmune and neurological disorders. Advanced models of the gut leveraging intestinal and colonic stem cells are enabling the development of more reliable and robust systems for evaluating the impact of changes in the microbiome on gut ...
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Human VP8* mAbs neutralize rotavirus selectively in human intestinal epithelial cells
Abstract We previously generated 32 rotavirus-specific (RV-specific) recombinant monoclonal antibodies (mAbs) derived from B cells isolated from human intestinal resections. Twenty-four of these mAbs were specific for the VP8* fragment of RV VP4, and most (20 of 24) were non-neutralizing when tested in the conventional MA104 cell–based assay. We reexamined the ability of these mAbs to ...
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The Power Of RepliGut in Vitro Intestinal Stem Cell Models
Both current in vitro and in vivo models used in the development of candidate therapies for the treatment of intestinal diseases have severe limitations. RepliGut®, an in vitro human intestinal epithelial stem cell model, addresses many of these issues and has significant potential to reduce the time and cost of drug development. This model may even help to identify optimal therapies for ...
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Analysis of the genome sequence of lactobacillus gasseri atcc 33323 reveals the molecular basis of an autochthonous intestinal organism
This study presents the complete genome sequence of Lactobacillus gasseri ATCC 33323, a neotype strain of human origin and a native species found commonly in the gastrointestinal tracts of neonates and adults. The plasmid-free genome was 1,894,360 bp in size and predicted to encode 1,810 genes. The GC content was 35.3%, similar to the GC content of its closest relatives, L. johnsonii NCC 533 ...
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Human Intestinal Ecosystem Analysis
The gut is a complex ecosystem that contains an extremely large community of microbes known as the gut microbiome. The gut microbiome is made up of bacteria, archaea, viruses, fungi, and other eukaryotic microorganisms, including yeasts, flagellates, ciliates, and protozoa. The gut microbiota of a healthy individual consists of six phyla (Firmicutes, Bacteroidetes, Proteobacteria, ...
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How Does Altis Biosystems Envision the Future of the Pharma/Biopharma Industry?
There is a growing need to address the high failure rate of drug candidates as they progress through clinical trials. Altis Biosystems aims to bring its technological advances to the forefront, enabling the drug development process to more effectively translate results from preclinical experiments to late-stage clinical trials. Breaking the Conformity of Inadequate Testing Platforms The ...
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Recapitulating the Multifaceted Inflammatory Environment of the Intestine In Vitro
Intestinal inflammatory diseases are highly complex, which has thus far prevented development of an effective in vitro disease model. With access to a donor-derived cell biobank and the ability to recapitulate region-specific environments of the intestine, Altis Biosystems is working toward the development of an in vitro RepliGut® model to accurately recapitulate the complex intestinal ...
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The Importance of Moderate Supplementation of Intestinal Lactase
Lactase is a disaccharidase present on the surface of mammalian small intestinal mucosal microvilli, and many beneficial intestinal bacteria have the ability to produce lactase. Lactase deficiency is present in most of the world's population, affecting nearly 2/3 of the world's population. Polylactose is composed of glucose and galactose, these two monosaccharides are easily absorbed by the ...
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Accurately Recapitulating Environmental Niches in Vitro Models of the Intestine
Advanced microphysiological systems can replicate aspects of intestinal complexity, such as epithelium self-renewal by stem cells in in vitro crypts or the interactions of microbes and intestinal epithelium mediated by a mucus layer. Availability of such models is key to progress in compound screening, disease modeling, and microbiome research. Defining a Niche A niche is a multidimensional ...
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Developing a Robust in Vitro Intestinal Model for Preclinical Candidate Screening of GI Toxicity
Gastrointestinal (GI) issues are common side effects of many drugs. Anticipating such side effects before clinical trials is limited by a lack of effective models for evaluating preclinical candidates for their potential to cause diarrhea, nausea, and other gut-related side effects. With its RepliGut® in vitro human intestinal model, Altis Biosystems is developing a system that could help ...
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Dissolved Hydrogen Application
Hydrogen molecule is the smallest molecule in nature. It is extremely penetrating and extremely volatile. It can freely enter and exit the body cells, remove aging and toxic free radicals. After drinking, it enters human body tissues and diffuses to act on all organ line particles and nucleus. Absorbed by the body. Realize the balance of the environment in the body and initiate the mechanism of ...
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Increasing the Efficiency of Drug Development with Preclinical Testing Using Human Intestinal Stem Cells
Due to a lack of robust in vivo gut models, animal studies are generally required to evaluate gut toxicity. However, these studies can be lengthy and expensive and may not accurately recapitulate the behavior of the human gastrointestinal tract. Drugs are thus often developed with undesired gut side effects that are not apparent until clinical trials. Organ-on-a-chip models are the closest ...
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Enzyme Technology in Dairy Research
Enzymes are proteins with catalytic functions produced by living cells, and they participate in various biochemical reactions in the body. Compared with traditional chemical methods such as acid processing of food, enzyme technology has displayed its unique charm. It overcomes harmful by-products generated in chemical methods, and provides healthier, environmentally friendly, safe and effective ...
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Applications of Diamine Oxidase
Diamine oxidase (DAO) is an intracellular enzyme that catalyzes diamine in mucosal or ciliated epithelial cells of the mammalian small intestine. It protects the intestinal mucosa by regulating intracellular ion homeostasis, influencing conduction pathways, and promoting cellular repair. Serum DAO is elevated in small intestinal mucosal barrier failure or in intestinal mucosal cell necrosis; ...
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How to activate the "first responders" of the immune system - NK cells
About NK Cells Natural Killer (NK) cells play a critical role in the innate immune surveillance against cancer and viral infections. They are the "first responders" capable of spontaneously recognizing abnormal cells in the body, swiftly eliminating them through targeted cytotoxic mechanisms, and effectively producing pro-inflammatory cytokines and chemokines to recruit and activate other immune ...
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Bile Acid: A Comprehensive Exploration of Function and Metabolism
In the realm of biological sciences, bile acids stand as pivotal molecules, playing a multifaceted role in various physiological processes within organisms. Bile acids are specialized molecules synthesized from cholesterol within the liver. These amphipathic compounds possess a hydrophilic region (carboxylic acid moiety) and a hydrophobic region (steroid backbone). Their distinctive structure ...
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Sources and Functions of Short-Chain Fatty Acids
When we talk about intestinal bacteria or dietary fiber, we often hear about "short-chain fatty acids". So what exactly are short-chain fatty acids? Based on the number of carbon atoms in the carbon chain, fatty acids with less than 6 carbon atoms are commonly referred to as short-chain fatty acids (SCFAs), those with 6 to 12 carbon atoms are called medium-chain fatty acids, and those with 12 or ...
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A Beginner’s Guide to Short Bowel Syndrome
Created for parents, by parents. No parent expects the news. So when you receive the news of a Short Bowel Syndrome diagnosis, it’s only fair that it’s a little overwhelming. Your picture of what the future of your family looks like begins to shift, and you have to shift with it. Let’s start off by saying, you’re not alone. There are parents, caregivers and family ...
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Enhancing Human Gut Tissue Models through Gene Editing
The variety of normal and diseased human tissues needed to perform comprehensive screening of drug candidates is a key resource for next-generation preclinical models, but obtaining these tissues is challenging. Gene editing enables Altis Biosystems to offer a diverse array of RepliGut® human gut models tailored for specific research programs. Many Challenges Around Accessing Tissues ...
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Cytokine Involvement in Inflammatory Immune Disorders
Cytokines, small molecules with potent biological activity, are primarily synthesized by immune and non-immune cells (e.g., vascular endothelial cells, epidermal cells, fibroblasts) in response to stimulation. These signaling molecules form intricate networks that contribute to immune responses, inflammatory reactions, cell proliferation, and growth. Cytokine Dysregulation in Systemic Immune ...
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