Read by QxMD icon Read

Autologous priming

Felix S Lichtenegger, Maurine Rothe, Frauke M Schnorfeil, Katrin Deiser, Christina Krupka, Christian Augsberger, Miriam Schlüter, Julia Neitz, Marion Subklewe
Immune checkpoint inhibition has been shown to successfully reactivate endogenous T cell responses directed against tumor-associated antigens, resulting in significantly prolonged overall survival in patients with various tumor entities. For malignancies with low endogenous immune responses, this approach has not shown a clear clinical benefit so far. Therapeutic vaccination, particularly dendritic cell (DC) vaccination, is a strategy to induce T cell responses. Interaction of DCs and T cells is dependent on receptor-ligand interactions of various immune checkpoints...
2018: Frontiers in Immunology
Rohini L Kadle, Salma A Abdou, Alvaro P Villarreal-Ponce, Marc A Soares, Darren L Sultan, Joshua A David, Jonathan Massie, William J Rifkin, Piul Rabbani, Daniel J Ceradini
Mesenchymal stem cells (MSCs) are known to both have powerful immunosuppressive properties and promote allograft tolerance. Determining the environmental oxygen tension and inflammatory conditions under which MSCs are optimally primed for this immunosuppressive function is essential to their utilization in promoting graft tolerance. Of particular interest is the mechanisms governing the interaction between MSCs and regulatory T cells (Tregs), which is relatively unknown. We performed our experiments utilizing rat bone marrow derived MSCs...
2018: PloS One
Qing Zhao Ruan, Jian Qian Fu, Xiao Xuan Wu, Li Ping Huang, Run Sheng Ruan
PURPOSE: It is now recognized that solid tumors encroach on the host's immune microenvironment to favor its own proliferation. Strategies to enhance the specificity of the endogenous T-cell population against tumors have been met with limited clinical success. We aimed to devise a two-tier protocol coupling in vivo whole antigen priming with ex vivo cellular expansion to clinically evaluate survival in patients following re-infusion of primed, autologous T cells, thereby determining treatment efficacy...
March 6, 2018: Cancer Immunology, Immunotherapy: CII
N M Kapranov, Yu O Davydova, I V Gal'tseva, N A Petinati, M V Bakshinskaitė, N I Drize, L A Kuz'mina, E N Parovichnikova, V G Savchenko
We studied the effect of autologous and allogeneic lymphocytes on multipotent mesenchymal stromal cells in co-culture. It is shown that changes in multipotent mesenchymal stromal cells and in lymphocytes did not depend on the source of lymphocytes. Contact with lymphocytes triggers expression of HLA-DR molecules on multipotent mesenchymal stromal cells and these cells lose their immune privilege. In multipotent mesenchymal stromal cells, the relative level of expression of factors involved in immunomodulation (IDO1, PTGES, and IL-6) and expression of adhesion molecule ICAM1 increased, while expression of genes involved in the differentiation of multipotent mesenchymal stromal cells remained unchanged...
March 4, 2018: Bulletin of Experimental Biology and Medicine
Malika Davids, Anil S Pooran, Elize Pietersen, Helen C Wainwright, Anke Binder, Robin Warren, Keertan Dheda
RATIONALE: The advent of extensively (XDR-TB) and totally drug-resistant TB, with limited or no treatment options, has facilitated renewed interest in host directed immunotherapy, particularly for therapeutically destitute patients. However, the selection and utility of such approaches depend upon understanding the host immune response in XDR-TB, which hitherto remains unexplored. OBJECTIVES: To determine the host immunological profile in patients with XDR-TB, compared to drug-sensitive TB, using peripheral blood and explanted lung tissue...
February 9, 2018: American Journal of Respiratory and Critical Care Medicine
Valerio Sansone, Manuel Brañes, Pietro Romeo
We propose a novel approach for the treatment of atrophic bone non-unions via parallel applications of extracorporeal shock wave therapy (ESWT) and an autologous mesenchymal stem cell transplant. The hypothesis resides on the potentiality of shock waves (SWs) to act as a tool for manipulating the patient's mesenchymal stem cells (MSCs). In addition to the conventional physical stimulus achieved by delivering SWs at the site of non-union to stimulate the well-known trophic effects on bone tissue, a series of concomitant ESWT would be administered in tandem at a bone marrow donor site, such as the iliac crest, to precondition resident bone marrow stromal cells (BMSCs) in vivo, priming resident MSCs by enlarging and conditioning their population prior to bone marrow aspiration...
February 2018: Medical Hypotheses
Irina Obleukhova, Nataliya Kiryishina, Svetlana Falaleeva, Julia Lopatnikova, Vasiliy Kurilin, Vadim Kozlov, Aleksander Vitsin, Andrey Cherkasov, Ekaterina Kulikova, Sergey Sennikov
Cancer is associated with a reduction in immature and mature circulating dendritic cells (DCs), and with an impaired migratory capacity, compared with healthy donors. Therefore, modern approaches to the in vitro generation of DCs loaded with tumor antigens and their use for inducing antitumor immune responses in vivo are being investigated. The purpose of the present study was to investigate the phenotypic and functional characteristics of peripheral blood DC subsets in patients with non-small cell lung cancer (NSCLC), and the development of an antitumor cytotoxic response by mononuclear cells (MNCs) from patients using in vitro generated antigen-primed DCs...
January 2018: Oncology Letters
Lucile Ferreux, Mathilde Bourdon, Amira Sallem, Pietro Santulli, Virginie Barraud-Lange, Nathalie Le Foll, Chloé Maignien, Charles Chapron, Dominique de Ziegler, Jean-Philippe Wolf, Khaled Pocate-Cheriet
STUDY QUESTION: The aim of this study was to evaluate the live birth rate (LBR) after frozen-thawed Day 5 (D5) and Day 6 (D6) blastocyst transfers. SUMMARY ANSWER: LBR following frozen-thawed blastocyst transfer is significantly lower with D6 than with D5 blastocyst regardless of embryo quality. WHAT IS KNOWN ALREADY: During fresh embryo transfer cycles, pregnancy rates (PR) are significantly higher when transferring blastocysts expanded on D5 compared with slow developing blastocysts (D6)...
February 2, 2018: Human Reproduction
Alba Torrents de la Peña, Steven W de Taeye, Kwinten Sliepen, Celia C LaBranche, Judith A Burger, Edith E Schermer, David C Montefiori, John P Moore, Per Johan Klasse, Rogier W Sanders
Recombinant soluble HIV-1 envelope glycoprotein (Env) SOSIP trimers are a design platform for inducing broadly neutralizing antibodies (bNAbs) by vaccination. To date, these and alternative designs of native-like trimers given singly or in pairs, have not induced bNAbs in test animals such as rabbits or macaques. Here, we have evaluated whether trivalent and tetravalent combinations of SOSIP trimers from clades A, B and C, delivered simultaneously or sequentially, induce better neutralizing antibody responses in rabbits than when given alone...
January 24, 2018: Journal of Virology
Jason J Xenakis, Emily D Howard, Kalmia M Smith, Courtney L Olbrich, Yanjun Huang, Dilanjan Anketell, Samuel Maldonado, Evangeline W Cornwell, Lisa A Spencer
Intestinal eosinophils are implicated in homeostatic and disease-associated processes, yet the phenotype of intestinal tissue-dwelling eosinophils is poorly defined and their roles in intestinal health or disease remain enigmatic. Here we probed the phenotype and localization of eosinophils constitutively homed to the small intestine of naïve mice at baseline, and of antigen sensitized mice following intestinal challenge. Eosinophils homed to the intestinal lamina propria of naïve mice were phenotypically distinguished from autologous blood eosinophils, and constitutively expressed antigen presenting cell markers, suggesting intestinal eosinophils, unlike blood eosinophils, may be primed for antigen presentation...
December 27, 2017: Immunology
Catherine E Handy, Emmanuel S Antonarakis
Sipuleucel-T, an autologous cellular immunotherapy manufactured from antigen-presenting cells primed to recognize prostatic acid phosphatase, was the first immunotherapy product approved by the US FDA. It was approved for men with asymptomatic or minimally symptomatic metastatic castration-resistant prostate cancer after it was shown to provide a survival advantage. Additional studies have examined its use in other clinical settings and in combination with other approved and investigational immunotherapy agents...
December 20, 2017: Future Oncology
Katia Beider, David Naor, Valeria Voevoda, Olga Ostrovsky, Hanna Bitner, Evgenia Rosenberg, Nira Varda-Bloom, Victoria Marcu-Malina, Jonathan Canaani, Ivetta Danilesko, Avichai Shimoni, Arnon Nagler
Polyclonal anti-human thymocyte globulins (ATG) have been recently shown to significantly reduce the incidence of graft versus host disease (GVHD) post allogeneic stem cell transplantation (HSCT) from both sibling and unrelated donors. Induction of regulatory T cells has been suggested as one of the possible mechanisms. The aim of current study was to further characterize the T cell populations induced by ATG treatment and to delineate the mechanisms involved in ATG-induced tolerance. Phenotypic characterization revealed a significant increase in the expression of FoxP3, GITR, CD95, PD-1 and ICOS as well as the complement inhibitory molecules CD55, CD58 and CD59 on CD4+CD25+ T cells upon ATG treatment...
October 31, 2017: Oncotarget
Susan F Slovin
Immune biomarkers encompass a wide range of blood-borne and cell-associated molecules whose detection or expression may change in response to an immune therapy. These immune therapies encompass a range of platforms including autologous cellular products, in other words, dendritic cells, prime boost DNA vaccines, chimeric antigen receptor (CAR) T cells and checkpoint inhibitors. The response to checkpoint inhibitors by a particular cancer may not be necessarily associated with a change in a particular immune biomarker; other immune biomarkers are needed to assess their association with treatment response or a change in the biology that can impact on the immunologic milieu...
December 2017: Biomarkers in Medicine
Jack Khouri, Lisa Rybicki, Navneet Majhail, Matt Kalaycio, Edward Copelan, Brad Pohlman, Brian Hill, Robert Dean, Aleksandr Lazaryan, Betty Hamilton, Steven Andresen, Ronald Sobecks, Brian Bolwell, Hien Liu
BACKGROUND: Peripheral blood progenitor cell (PBPC) mobilization with chemotherapy in addition to Granulocyte-Colony Stimulating Factor (G-CSF) improves cell collection compared to G-CSF alone; however, it is associated with increased risk of neutropenic fever (NF). METHODS: We analyzed risk factors for post-priming NF and NF association with autologous stem cell transplant outcomes. Between 1998 and 2008, 593 adult patients with lymphoma underwent PBPC mobilization with etoposide and G-CSF...
November 14, 2017: Journal of Clinical Apheresis
Frederick Allen, Peter Rauhe, David Askew, Alexander A Tong, Joseph Nthale, Saada Eid, Jay T Myers, Caryn Tong, Alex Y Huang
Lymph node (LN) plays a critical role in tumor cell survival outside of the primary tumor sites and dictates overall clinical response in many tumor types (1, 2). Previously, we and others have demonstrated that CCL3 plays an essential role in orchestrating T cell-antigen-presenting cell (APC) encounters in the draining LN following vaccination, and such interactions enhance the magnitude of the memory T cell pool (3-5). In the current study, we investigate the cellular responses in the tumor-draining lymph nodes (TDLNs) of a CCL3-secreting CT26 colon tumor (L3TU) as compared to wild-type tumor (WTTU) during the priming phase of an antitumor response (≤10 days)...
2017: Frontiers in Immunology
Gabor Kiss, Eric Braunberger
A 19-year-old man with mitral valve endocarditis and prolapse, intracerebral and intracerebellar hematoma, and a mycotic cerebral aneurysm underwent emergency mitral valve replacement during minimal cardiopulmonary bypass (total priming volume, 800 mL; autologous retropriming, activated clotting time <300 seconds) 1 day after undergoing endovascular coil embolization of the aneurysm. Postoperatively, there were no extensions of the intracerebral and intracerebellar hematoma. After intensive rehabilitation therapy, the patient recovered fully except for residual bilateral claudication because of preoperative bilateral embolism to both superficial femoral arteries...
November 1, 2017: A & A Case Reports
Jonathan Morales, Carlos Barrera-Avalos, Carlos Castro, Stephanie Castillo, Claudio Barrientos, Claudia Robles-Planells, Ximena López, Ernesto Torres, Margarita Montoya, Marcelo Cortez-San Martín, Denise Riquelme, Alejandro Escobar, Ricardo Fernández, Mónica Imarai, Daniela Sauma, Leonel E Rojo, Elias Leiva-Salcedo, Claudio Acuña-Castillo
Antigen cross-presentation is a crucial step in the assembly of an antitumor immune response leading to activation of naïve CD8 T cells. This process has been extensively used in clinical trials, in which dendritic cells generated in vitro are loaded with tumor antigens and then autotransplanted to the patients. Recently, the use of autologous transplant of dendritic cells fused with dying tumor cells has demonstrated good results in clinical studies. In this work, we generated a similar process in vivo by treating mice with dead tumor cells [cell bodies (CBs)] expressing the fusogenic protein of the infectious salmon anemia virus (ISAV)...
2017: Frontiers in Immunology
J W Liu, X Lu, Z M Yang, L J Deng, L Yang
OBJECTIVE: To explore the potential of autologous dendritic cells (DCs) pulsed with caner/testis antigen NY-ESO-1 peptides in inducing specific cytotoxic T lymphocyte (CTLs) response and antineoplastic immune function of specific CTLs. METHODS: Fifteen patients with II to III stage positive HLA -A0201(+) and NY-ESO-1(+) were enrolled in the Cancer Hospital Chinese Academy of Medical Sciences on the basis of preclinical experiments from November 2014 to October 2015, and their peripheral blood mononuclear cells (PBMCs) and peripheral blood lymphocytes (PBLs) were isolated...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Troy D Bornes, Adetola B Adesida, Nadr M Jomha
Bone marrow-derived mesenchymal stromal stem cells (BMSCs) are a promising cell source for treating articular cartilage defects. The objective of this study was to assess a protocol that involved autologous transplantation of BMSCs into full-thickness cartilage defects in sheep following isolation, expansion, and a short period (4 days) of chondrogenic priming. The impact of oxygen tension during preimplantation culture was investigated. It was hypothesized that chondrogenically primed BMSCs would produce superior cartilaginous repair tissue relative to control defects, and that culture under hypoxia would yield improved repair tissue in comparison to normoxia...
November 30, 2017: Tissue Engineering. Part A
Ashley Hodge, Apryl Cohen, Peter Winch, Dmitry Tumin, Jeffrey Burnside, Todd Ratliff, Mark Galantowicz, Aymen Naguib
Hemodilution is one of the sequelae of cardiopulmonary bypass (CPB). Autologous blood priming (retrograde autologous priming [RAP]/venous antegrade priming [VAP]) and acute normovolemic hemodilution (ANH) may be effective techniques to minimize hemodilution. The primary objective of this study is to investigate the impact of RAP/VAP combined with ANH on changes in cerebral saturations. A retrospective analysis of 52 patients undergoing congenital cardiac surgery requiring CPB between July 2014 and March 2015 was performed...
September 2017: Journal of Extra-corporeal Technology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"