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Immunomodulatory

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https://www.readbyqxmd.com/read/29691900/a-dual-immunotherapy-nanoparticle-improves-t-cell-activation-and-cancer-immunotherapy
#1
Yu Mi, Christof C Smith, Feifei Yang, Yanfei Qi, Kyle C Roche, Jonathan S Serody, Benjamin G Vincent, Andrew Z Wang
Combination immunotherapy has recently emerged as a powerful cancer treatment strategy. A promising treatment approach utilizes coadministration of antagonistic antibodies to block checkpoint inhibitor receptors, such as antiprogrammed cell death-1 (aPD1), alongside agonistic antibodies to activate costimulatory receptors, such as antitumor necrosis factor receptor superfamily member 4 (aOX40). Optimal T-cell activation is achieved when both immunomodulatory agents simultaneously engage T-cells and promote synergistic proactivation signaling...
April 25, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29691866/gold-lotion-from-citrus-peel-extract-ameliorates-imiquimod-induced-psoriasis-like-dermatitis-in-murine
#2
Chi-Chien Lin, Jung-Ju Wu, Yi-Gen Pan, Ya-Hsuan Chao, Fang-Chu Lin, Ying-Ray Lee, Ching-Liang Chu
BACKGROUND: A natural mixed product Gold lotion (GL), which is made from the peels of six citrus fruits, has recently been identified to possess anti-oxidative, anti-inflammatory, and immunomodulatory effects. GL has been used to protect skin against UV-induced damage, but the activity to psoriasis, a chronic autoimmune skin disease caused by dysregulation between immune cells and keratinocytes, is not known. Thus, we evaluated the effect of GL on imiquimod (IMQ)-induced psoriasis-like inflammation in mice...
April 24, 2018: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29691598/hepatocyte-transplantation-and-advancements-in-alternative-cell-sources-for-liver-based-regenerative-medicine
#3
REVIEW
Charlotte A Lee, Siddharth Sinha, Emer Fitzpatrick, Anil Dhawan
Human hepatocyte transplantation has been actively perused as an alternative to liver replacement for acute liver failure and liver-based metabolic defects. Current challenges in this field include a limited cell source, reduced cell viability following cryopreservation and poor engraftment of cells into the recipient liver with consequent limited life span. As a result, alternative stem cell sources such as pluripotent stem cells, fibroblasts, hepatic progenitor cells, amniotic epithelial cells and mesenchymal stem/stromal cells (MSCs) can be used to generate induced hepatocyte like cells (HLC) with each technique exhibiting advantages and disadvantages...
April 24, 2018: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/29690884/capsaicin-enriched-diet-ameliorates-autoimmune-neuritis-in-rats
#4
Jeremias Motte, Björn Ambrosius, Thomas Grüter, Hussein Bachir, Melissa Sgodzai, Xiomara Pedreiturria, Kalliopi Pitarokoili, Ralf Gold
BACKGROUND: Autoimmune neuropathies are common PNS disorders and effective treatment is challenging. Environmental influence and dietary components are known to affect the course of autoimmune diseases. Capsaicin as pungent component of chili-peppers is common in human nutrition. An influence of capsaicin on autoimmune diseases has been postulated. METHODS: We tested capsaicin in the animal model of experimental autoimmune neuritis (EAN) in Lewis rat. Rats were immunized with P2-peptide and were treated with capsaicin in different preventive settings...
April 24, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29689702/protective-and-recuperative-effects-of-3-bromopyruvate-on-immunological-hepatic-and-renal-homeostasis-in-a-murine-host-bearing-ascitic-lymphoma-implication-of-niche-dependent-differential-roles-of-macrophages
#5
Saveg Yadav, Shrish Kumar Pandey, Yugal Goel, Praveen Kumar Kujur, Babu Nandan Maurya, Ashish Verma, Ajay Kumar, Rana Pratap Singh, Sukh Mahendra Singh
3-bromopyruvate (3-BP) possesses promising antineoplastic potential, however, its effects on immunological homeostasis vis a vis hepatic and renal functions in a tumor bearing host remain unclear. Therefore, the effect of 3-BP administration to a murine host bearing a progressively growing tumor of thymoma origin, designated as Dalton's lymphoma (DL), on immunological, renal and hepatic homeostasis was investigated. Administration of 3-BP (4 mg/kg) to the tumor bearing host reversed tumor growth associated thymic atrophy and splenomegaly, accompanied by altered cell survival and repertoire of splenic, bone marrow and tumor associated macrophages (TAM)...
March 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29688608/exosomal-biomarkers-in-oral-diseases
#6
Mohammad Hadavand, Sarfaraz Hasni
Exosomes have emerged as novel nanovesicles that facilitate intracellular communication. The molecular content of exosomes is specific to their cell type of origin and reflective of the cells physiological status. Combined with their stability and accessibility in a variety of biofluids, exosomes may be used as biomarkers in a variety of diseases. Recent evidence suggests that exosomes have immunomodulatory functions that play a role in the severity and development of autoimmune disorders and cancers. This article focuses on the biomarker and therapeutic potential of exosomes for oral manifestation of autoimmune diseases and head and neck cancers...
April 24, 2018: Oral Diseases
https://www.readbyqxmd.com/read/29688069/development-of-kupffer-cell-targeting-type-i-interferon-for-the-treatment-of-hepatitis-via-inducing-anti-inflammatory-and-immunomodulatory-actions
#7
Yuki Minayoshi, Hitoshi Maeda, Hiroki Yanagisawa, Keisuke Hamasaki, Yuki Mizuta, Kento Nishida, Ryo Kinoshita, Yuki Enoki, Tadasi Imafuku, Victor Tuan Giam Chuang, Tomoaki Koga, Yukio Fujiwara, Motohiro Takeya, Kayoko Sonoda, Tomohiko Wakayama, Kazuaki Taguchi, Yu Ishima, Tatsuhiro Ishida, Yasuko Iwakiri, Motohiko Tanaka, Yutaka Sasaki, Hiroshi Watanabe, Masaki Otagiri, Toru Maruyama
Because of its multifaceted anti-inflammatory and immunomodulatory effects, delivering type-I interferon to Kupffer cells has the potential to function as a novel type of therapy for the treatment of various types of hepatitis. We report herein on the preparation of a Kupffer cell targeting type-I interferon, an albumin-IFNα2b fusion protein that contains highly mannosylated N-linked oligosaccharide chains, Man-HSA(D494N)-IFNα2b, attached by combining albumin fusion technology and site-directed mutagenesis...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29687376/isolation-and-flow-cytometric-analysis-of-the-stromal-vascular-fraction-isolated-from-mouse-adipose-tissue
#8
Annie C Bowles, Alan Tucker, Bruce A Bunnell
Evidence from preclinical research and clinical trials demonstrates the use of the stromal vascular fraction (SVF) as therapy for numerous indications. These results demonstrate that autologous SVF is not only safe and effective but provides robust anti-inflammatory, immunomodulatory, and reparative effects in vivo. The potency of the SVF is attributed to the cellular composition which includes adipose-derived stem cells (ASCs), adipocytes, endothelial cells, and various immune cells. As the name would suggest, these SVF cells are derived from the stromal compartment of adipose, or fat...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29687216/fluoxetine-pretreatment-enhances-neurogenic-angiogenic-and-immunomodulatory-effects-of-mscs-on-experimentally-induced-diabetic-neuropathy
#9
Shaimaa A Abdelrahman, Mai A Samak, Sally M Shalaby
Being one of the most debilitating complications among diabetic patients, diabetic polyneuropathy (DPN) is a paramount point of continuous research. Stem cell therapies have shown promising results. However, limited cell survival and paracrine activities hinder its transfer from bench to bedside. We designed this study to evaluate fluoxetine-pretreatment technique of mesenchymal stem cells (MSCs) as an approach to enhance their paracrine and immunomodulatory properties in DPN. Effects of fluoxetine treatment of MSCs were tested in vitro...
April 23, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29686284/multi-faceted-immunomodulatory-and-tissue-tropic-clinical-bacterial-isolate-potentiates-prostate-cancer-immunotherapy
#10
Jonathan F Anker, Anum F Naseem, Hanlin Mok, Anthony J Schaeffer, Sarki A Abdulkadir, Praveen Thumbikat
Immune checkpoint inhibitors have not been effective for immunologically "cold" tumors, such as prostate cancer, which contain scarce tumor infiltrating lymphocytes. We hypothesized that select tissue-specific and immunostimulatory bacteria can potentiate these immunotherapies. Here we show that a patient-derived prostate-specific microbe, CP1, in combination with anti-PD-1 immunotherapy, increases survival and decreases tumor burden in orthotopic MYC- and PTEN-mutant prostate cancer models. CP1 administered intra-urethrally specifically homes to and colonizes tumors without causing any systemic toxicities...
April 23, 2018: Nature Communications
https://www.readbyqxmd.com/read/29685495/igg-and-leukocytes-targets-of-immunomodulatory-%C3%AE-2-6-sialic-acids
#11
Mark B Jones
ST6Gal1 is a critical sialyltransferase enzyme that controls the addition of α2,6-linked sialic acids to the termini of glycans. Attachment of sialic acids to glycoproteins as a posttranslational modification influences cellular responses, and is a well-known modifier of immune cell behavior. ST6Gal1 activity impacts processes such as: effector functions of immunoglobulin G via Fc sialylation, hematopoietic capacity by hematopoietic stem and progenitor cell surface sialylation, and lymphocyte activation thresholds though CD22 engagement and inhibition of galectins...
March 31, 2018: Cellular Immunology
https://www.readbyqxmd.com/read/29684675/fak-and-yap-taz-dependent-mechanotransduction-pathways-are-required-for-enhanced-immunomodulatory-properties-of-adipose-derived-mesenchymal-stem-cells-induced-by-aligned-fibrous-scaffolds
#12
S Wan, X Fu, Y Ji, M Li, X Shi, Y Wang
Adipose-derived mesenchymal stem cells (ASCs) represent an excellent candidate for tissue engineering due to their multipotency and paracrine functions. Physical cues provided by the scaffolds have been shown to direct a variety of cellular behaviors of ASCs; however, their effects on the paracrine functions of ASCs, especially immunomodulatory functions, remain largely unexplored. Thus, PLLA electrospun fibrous scaffolds, with fibers oriented either randomly or aligned, were used as a model to investigate the effects of fiber orientation on the immunomodulatory paracrine secretion of ASCs...
April 16, 2018: Biomaterials
https://www.readbyqxmd.com/read/29684452/characterization-and-immunomodulatory-activity-of-an-exopolysaccharide-produced-by-lactobacillus-plantarum-jlk0142-isolated-from-fermented-dairy-tofu
#13
Ji Wang, Tong Wu, Xiaobin Fang, Weihong Min, Zhennai Yang
A purified neutral exopolysaccharide (EPS) designated as EPS0142 was obtained from Lactobacillus plantarum JLK0142. EPS0142 consisted of glucose and galactose in an approximate molar ratio of 2.13:1.06 and had a molecular weight of 1.34 × 105  Da. The FT-IR spectrum showed that EPS0142 had a typical polysaccharide absorption pattern. 1 H NMR and 13 C NMR spectra analysis showed the presence of N-acetylated sugar residues. EPS0142 had no toxic effects on RAW 264.7 cells and significantly improved their phagocytic activity and NO secretion in vitro...
April 20, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29684038/murine-embryos-exposed-to-human-endometrial-mscs-derived-extracellular-vesicles-exhibit-higher-vegf-pdgf-aa-release-increased-blastomere-count-and-hatching-rates
#14
Rebeca Blázquez, Francisco Miguel Sánchez-Margallo, Verónica Álvarez, Elvira Matilla, Nuria Hernández, Federica Marinaro, María Gómez-Serrano, Inmaculada Jorge, Javier G Casado, Beatriz Macías-García
Endometrial Mesenchymal Stromal Cells (endMSCs) are multipotent cells with immunomodulatory and pro-regenerative activity which is mainly mediated by a paracrine effect. The exosomes released by MSCs have become a promising therapeutic tool for the treatment of immune-mediated diseases. More specifically, extracellular vesicles derived from endMSCs (EV-endMSCs) have demonstrated a cardioprotective effect through the release of anti-apoptotic and pro-angiogenic factors. Here we hypothesize that EV-endMSCs may be used as a co-adjuvant to improve in vitro fertilization outcomes and embryo quality...
2018: PloS One
https://www.readbyqxmd.com/read/29683848/effects-of-hiv-art-and-prebiotics-on-the-active-fraction-of-the-gut-microbiota
#15
Simon Deusch, Sergio Serrano-Villar, David Rojo, Mónica Martínez-Martínez, Rafael Bargiela, Jorge F Vázquez-Castellanos, Talía Sainz, Coral Barbas, Andrés Moya, Santiago Moreno, María J Gosalbes, Vicente Estrada, Jana Seifert, Manuel Ferrer
OBJECTIVE: In a recent blinded randomized study, we found that in HIV individuals a short supplementation with prebiotics (scGOS/lcFOS/glutamine) ameliorates dysbiosis of total gut bacteria, particularly among viremic untreated patients. Our study goal was to determine the fraction of the microbiota that becomes active during the intervention and that could provide additional functional information. DESIGN: A total of six healthy individuals, and 16 HIV-infected patients comprising viremic untreated patients (n = 5) and antiretroviral therapy-treated (ART) patients that are further divided into immunological responders (n = 7) and immunological nonresponders (n = 4) completed the 6-week course of prebiotic treatment, including six patients receiving a placebo...
April 19, 2018: AIDS
https://www.readbyqxmd.com/read/29682916/pediatric-uveitis
#16
Nicole Shu-Wen Chan, Jessy Choi, Chui Ming Gemmy Cheung
Pediatric uveitis differs from adult-onset uveitis and is a topic of special interest because of its diagnostic and therapeutic challenges. Children with uveitis are often asymptomatic and the uveitis is often chronic, persistent, recurrent, and resistant to conventional treatment. Anterior uveitis is the most common type of uveitis in children; the prevalence of intermediate, posterior, and panuveitis varies geographically and among ethnic groups. Regarding etiology, most cases of pediatric uveitis are idiopathic but can be due to systemic inflammatory disorders, infections, or a manifestation of masquerade syndrome...
April 23, 2018: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/29681562/successful-treatment-of-primary-immune-thrombocytopenia-accompanied-by-diabetes-mellitus-treated-using-clarithromycin-followed-by-prednisolone
#17
Masashi Ohe, Haruki Shida, Tetsuya Horita, Ken Furuya, Satoshi Hashino
Macrolides have immunomodulatory effects including anti-inflammatory effects as well as antibacterial activity. In consideration of these immunomodulatory effects, we report a patient with primary immune thrombocytopenia (ITP) treated using clarithromycin (CAM), a macrolide, followed by prednisolone (PSL). A 78-year-old man with thrombocytopenia was admitted to our hospital for further examination. Initial laboratory data showed reduced platelet counts (1.7 × 104 /μL). Finally, we diagnosed the patient as having primary ITP...
April 23, 2018: Drug Discoveries & Therapeutics
https://www.readbyqxmd.com/read/29680798/corpus-callosum-demyelination-associated-with-acquired-stuttering
#18
Barbara McElwee Decker, Barry Guitar, Andrew Solomon
Compared with developmental stuttering, adult onset acquired stuttering is rare. However, several case reports describe acquired stuttering and an association with callosal pathology. Interestingly, these cases share a neuroanatomical localisation also demonstrated in developmental stuttering. We present a case of adult onset acquired stuttering associated with inflammatory demyelination within the corpus callosum. This patient's disfluency improved after the initiation of immunomodulatory therapy.
April 21, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29680371/the-immunomodulatory-role-of-zinc-in-asthmatic-patients
#19
Nesrine A Mohamed, Marwa Rushdy, Asmaa S M Abdel-Rehim
BACKGROUND: Zinc deficiency may play an important role in the development of atopic asthma. THE AIM OF THE WORK: To assess serum zinc levels in adult atopic, non-atopic asthmatic patients, and in healthy controls and to investigate its modulatory effect on production of interferon gamma (IFN-γ) and interleukin-10 (IL-10) by peripheral blood mononuclear cells (PBMCs) in vitro. METHODS: Sixty asthmatics and 30 apparently healthy volunteers were included in this study...
April 18, 2018: Cytokine
https://www.readbyqxmd.com/read/29680236/chimeric-small-antibody-fragments-as-strategy-to-deliver-therapeutic-payloads
#20
Sandra Aguiar, Joana Dias, Ana M Manuel, Roberto Russo, Pedro M P Gois, Frederico A da Silva, Joao Goncalves
Antibody-drug conjugates (ADCs) represent an innovative class of biopharmaceuticals, which aim at achieving a site-specific delivery of cytotoxic agents to the target cell. The use of ADCs represents a promising strategy to overcome the disadvantages of conventional pharmacotherapy of cancer or neurological diseases, based on cytotoxic or immunomodulatory agents. ADCs consist of monoclonal antibodies attached to biologically active drugs by means of cleavable chemical linkers. Advances in technologies for the coupling of antibodies to cytotoxic drugs promise to deliver greater control of drug pharmacokinetic properties and to significantly improve pharmacodelivery applications, minimizing exposure of healthy tissue...
2018: Advances in Protein Chemistry and Structural Biology
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