scholarly journals The Quantification of Antibody Elements and Receptors subunit expression using qPCR: The Design of VH, VL, CH, CL, FcR subunits primers for a more holistic view of the immune system

2019 ◽  
Author(s):  
Wei-Li Ling ◽  
Yuen-Ling Ng ◽  
Anil Wipat ◽  
David Philip Lane ◽  
Samuel-Ken-En Gan
Keyword(s):  
Immune System ◽  
Variable Region ◽  
Housekeeping Gene ◽  
Clinical Monitoring ◽  
Holistic View ◽  
Expression Levels ◽  
Subunit Expression ◽  
Health And Disease ◽  
Immunoglobulin Locus ◽  
Qpcr Primer

AbstractThe expression levels of Immunoglobulin elements and their receptors are important markers for health and disease. Within the immunoglobulin locus, the constant regions and the variable region families are associated with certain pathologies, yet a holistic view of the interaction between the expression of the multiple genes remain to be fully characterized. There is thus an important need to quantify antibody elements, their receptors and the receptor subunits in blood (PBMC cDNA) for both screening and detailed studies of such associations. Leveraging on qPCR, we designed primers for all Vκ 1-6, VH1-7, Vλ1-11, nine CH isotypes, Cκ, Cκ, Cλ1 &3, FcεRI α,β, and γ subunits, all three FcγR and their subunits, and FcαR. Validating this on a volunteer PBMC cDNA, we show a qPCR primer set repertoire that can quantify the relative expression of all the above genes to GAPDH housekeeping gene, with implications and uses in both clinical monitoring and research.

scholarly journals Gene Expression Profile of the Hypothalamus in DNP-KLH Immunized Mice Following Electroacupuncture Stimulation

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Sun Kwang Kim ◽  
Jeungshin Kim ◽  
Eunjung Ko ◽  
Hyunseong Kim ◽  
Deok-Sang Hwang ◽  
...  
Keyword(s):  
Gene Expression ◽  
Immune System ◽  
Microarray Analysis ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Variable Region ◽  
Cell Receptor ◽  
Control Group ◽  
Oligoadenylate Synthetase ◽  
Expression Levels

Clinical evidence indicates that electroacupuncture (EA) is effective for allergic disorder. Recent animal studies have shown that EA treatment reduces levels of IgE and Th2 cytokines in BALB/c mice immunized with 2,4-dinitrophenylated keyhole limpet protein (DNP-KLH). The hypothalamus, a brain center of the neural-immune system, is known to be activated by EA stimulation. This study was performed to identify and characterize the differentially expressed genes in the hypothalamus of DNP-KLH immunized mice that were stimulated with EA or only restrained. To this aim, we conducted a microarray analysis to evaluate the global gene expression profiles, using the hypothalamic RNA samples taken from three groups of mice: (i) normal control group (no treatments); (ii) IMH group (DNP-KLH immunization + restraint); and (iii) IMEA group (immunization + EA stimulation). The microarray analysis revealed that total 39 genes were altered in their expression levels by EA treatment. Ten genes, including T-cell receptor alpha variable region family 13 subfamily 1 (Tcra-V13.1), heat shock protein 1B (Hspa1b) and 2′–5′oligoadenylate synthetase 1F (Oas1f), were up-regulated in the IMEA group when compared with the IMH group. In contrast, 29 genes, including decay accelerating factor 2 (Daf2), NAD(P)H dehydrogenase, quinone 1 (Nqo1) and programmed cell death 1 ligand 2 (Pdcd1lg2) were down-regulated in the IMEA group as compared with the IMH group. These results suggest that EA treatment can modulate immune response in DNP-KLH immunized mice by regulating expression levels of genes that are associated with innate immune, cellular defense and/or other kinds of immune system in the hypothalamus.

scholarly journals Impact of Dietary Flavanols on Microbiota, Immunity and Inflammation in Metabolic Diseases

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 850
Author(s):  
María Ángeles Martín ◽  
Sonia Ramos
Keyword(s):  
Immune System ◽  
Fruits And Vegetables ◽  
Metabolic Diseases ◽  
Nuclear Factor Κb ◽  
Low Grade ◽  
Beneficial Effects ◽  
Health And Disease ◽  
Immunological Reactions ◽  
And Function ◽  
Positive Properties

Flavanols are natural occurring polyphenols abundant in fruits and vegetables to which have been attributed to beneficial effects on health, and also against metabolic diseases, such as diabetes, obesity and metabolic syndrome. These positive properties have been associated to the modulation of different molecular pathways, and importantly, to the regulation of immunological reactions (pro-inflammatory cytokines, chemokines, adhesion molecules, nuclear factor-κB [NF-κB], inducible enzymes), and the activity of cells of the immune system. In addition, flavanols can modulate the composition and function of gut microbiome in a prebiotic-like manner, resulting in the positive regulation of metabolic pathways and immune responses, and reduction of low-grade chronic inflammation. Moreover, the biotransformation of flavanols by gut bacteria increases their bioavailability generating a number of metabolites with potential to affect human metabolism, including during metabolic diseases. However, the exact mechanisms by which flavanols act on the microbiota and immune system to influence health and disease remain unclear, especially in humans where these connections have been scarcely explored. This review seeks to summarize recent advances on the complex interaction of flavanols with gut microbiota, immunity and inflammation focus on metabolic diseases.

scholarly journals Nutritional Components in Western Diet Versus Mediterranean Diet at the Gut Microbiota–Immune System Interplay. Implications for Health and Disease

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 699
Author(s):  
Cielo García-Montero ◽  
Oscar Fraile-Martínez ◽  
Ana M. Gómez-Lahoz ◽  
Leonel Pekarek ◽  
Alejandro J. Castellanos ◽  
...  
Keyword(s):  
Immune System ◽  
Gut Microbiota ◽  
Mediterranean Diet ◽  
Inflammatory Disorder ◽  
Immune Functions ◽  
Treatment And Prevention ◽  
Nutritional Components ◽  
Westernized Diet ◽  
Prevention And Health Promotion ◽  
Health And Disease

The most prevalent diseases of our time, non-communicable diseases (NCDs) (including obesity, type 2 diabetes, cardiovascular diseases and some types of cancer) are rising worldwide. All of them share the condition of an “inflammatory disorder”, with impaired immune functions frequently caused or accompanied by alterations in gut microbiota. These multifactorial maladies also have in common malnutrition related to physiopathology. In this context, diet is the greatest modulator of immune system–microbiota crosstalk, and much interest, and new challenges, are arising in the area of precision nutrition as a way towards treatment and prevention. It is a fact that the westernized diet (WD) is partly responsible for the increased prevalence of NCDs, negatively affecting both gut microbiota and the immune system. Conversely, other nutritional approaches, such as Mediterranean diet (MD), positively influence immune system and gut microbiota, and is proposed not only as a potential tool in the clinical management of different disease conditions, but also for prevention and health promotion globally. Thus, the purpose of this review is to determine the regulatory role of nutritional components of WD and MD in the gut microbiota and immune system interplay, in order to understand, and create awareness of, the influence of diet over both key components.

scholarly journals NCMP-05. DECODING THE IMMUNE SYSTEM RESPONSE TO LEPTOMENINGEAL METASTASIS

2020 ◽  
Vol 22 (Supplement_2) ◽  
pp. ii124-ii124
Author(s):  
Jan Remsik ◽  
Xinran Tong ◽  
Ugur Sener ◽  
Danille Isakov ◽  
Yudan Chi ◽  
...  
Keyword(s):  
Immune System ◽  
Immune Cells ◽  
Leptomeningeal Metastasis ◽  
System Response ◽  
Idle State ◽  
The Central Nervous System ◽  
Health And Disease ◽  
Immune System Response ◽  
Therapeutic Protocols ◽  
Brain And Spinal Cord

Abstract For decades, the central nervous system was considered to be an immune privileged organ with limited access to systemic immunity. However, the leptomeninges, the cerebrospinal fluid (CSF)-filled anatomical structure that protects the brain and spinal cord, represent a relatively immune-rich environment. Despite the presence of immune cells, complications in the CSF, such as infectious meningitis and a neurological development of cancer known as leptomeningeal metastasis, are difficult to treat and are frequently fatal. We show that immune cells entering the CSF are held in an ‘idle’ state that limits their cytotoxic arsenal and antigen presentation machinery. To understand this underappreciated neuroanatomic niche, we used unique mouse models and rare patient samples to characterize its cellular composition and critical signaling events in health and disease at a single-cell resolution. Revealing the mediators of CSF immune response will allow us to re-evaluate current therapeutic protocols and employ rational combinations with immunotherapies, therefore turning the patient’s own immune system into an active weapon against pathogens and cancer.

scholarly journals Intragenomic and intraspecific heterogeneity in rrs may surpass interspecific variability in a natural population of Veillonella

Microbiology ◽  
2010 ◽  
Vol 156 (7) ◽  
pp. 2080-2091 ◽  
Author(s):  
Anne-Laure Michon ◽  
Fabien Aujoulat ◽  
Laurent Roudière ◽  
Olivier Soulier ◽  
Isabelle Zorgniotti ◽  
...  
Keyword(s):  
16S Rrna ◽  
16S Rrna Gene ◽  
Gene Diversity ◽  
Natural Populations ◽  
Variable Region ◽  
Housekeeping Gene ◽  
Single Copy ◽  
Population Based ◽  
Rrna Gene ◽  
Gene Copies

As well as intraspecific heterogeneity, intragenomic heterogeneity between 16S rRNA gene copies has been described for a range of bacteria. Due to the wide use of 16S rRNA gene sequence analysis for taxonomy, identification and metagenomics, evaluating the extent of these heterogeneities in natural populations is an essential prerequisite. We investigated inter- and intragenomic 16S rRNA gene heterogeneity of the variable region V3 in a population of 149 clinical isolates of Veillonella spp. of human origin and in 13 type or reference Veillonella strains using PCR-temporal temperature gel electrophoresis (TTGE). 16S rRNA gene diversity was high in the studied population, as 45 different banding patterns were observed. Intragenomic heterogeneity was demonstrated for 110 (74 %) isolates and 8 (61.5 %) type or reference strains displaying two or three different gene copies. Polymorphic nucleotide positions accounted for 0.5–2.5 % of the sequence and were scattered in helices H16 and H17 of the rRNA molecule. Some of them changed the secondary structure of H17. Phylotaxonomic structure of the population based on the single-copy housekeeping gene rpoB was compared with TTGE patterns. The intragenomic V3 heterogeneity, as well as recombination events between strains or isolates of different rpoB clades, impaired the 16S rRNA-based identification for some Veillonella species. Such approaches should be conducted in other bacterial populations to optimize the interpretation of 16S rRNA gene sequences in taxonomy and/or diversity studies.

Epigenetic regulation of the immune system in health and disease

2010 ◽  
Vol 76 (6) ◽  
pp. 431-439 ◽  
Author(s):  
J. L. Fernández-Morera ◽  
V. Calvanese ◽  
S. Rodríguez-Rodero ◽  
E. Menéndez-Torre ◽  
M. F. Fraga
Keyword(s):  
Immune System ◽  
Epigenetic Regulation ◽  
Health And Disease

scholarly journals Fecal Virome Transplantation

2021 ◽  
Author(s):  
Derek Lin ◽  
Henry C. Lin
Keyword(s):  
Immune System ◽  
Human Health ◽  
Bacterial Communities ◽  
Therapeutic Potential ◽  
Large Population ◽  
Current Understanding ◽  
Host Immune System ◽  
Full Extent ◽  
Health And Disease ◽  
Established Role

The gut virome consists of a large population of eukaryotic and prokaryotic viruses that have an emerging role in human health and disease. Growing evidence for the importance of the virome includes recent findings on fecal virome transplantation (FVT) that suggest FVT may have therapeutic potential for the resolution of dysbiosis and treatment of dysbiosis-related disorders. Most viruses in the gut virome are bacteriophages (phages), which have a well-established role in regulating bacterial communities across environments. Phages also influence health and disease by interacting directly with the host immune system. The full extent to which gut phages should be considered as both a target and a tool for microbiome modulation remains to be seen. This chapter will explore the current understanding of the gut virome and the therapeutic potential for FVT.

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