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https://www.readbyqxmd.com/read/28098898/a-hepatic-stem-cell-vaccine-is-superior-to-an-embryonic-stem-cell-vaccine-in-the-prophylaxis-and-treatment-of-murine-hepatocarcinoma
#1
Qi Zheng, Yichao Zheng, Jing Chen, Jia You, Yueyong Zhu, Yurui Liu, Jia Ji Jiang
Stem cells and cancer cells express a common subset of antigens called oncofetal antigens. Theoretically, vaccination with stem cells is effective at boosting the preexisting anticancer immune response. Herein we describe the efficacy of two stem cell-based vaccines in the prophylaxis and treatment of subcutaneous hepatic tumors transplanted into mice. C57BL/6j mice were vaccinated weekly with either hepatic stem cells (HSCs) or embryonic stem cells (ESCs) for three weeks, followed by a subcutaneous challenge with Hepa 1-6 cells at one week (group 1) or four weeks (group 2) after vaccination...
January 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28098738/subretinal-cell-based-therapy-an-analysis-of-surgical-variables-to-increase-cell-survival
#2
David J Wilson, Martha Neuringer, Jonathan Stoddard, Lauren M Renner, Steven Bailey, Andreas Lauer, Trevor J McGill
PURPOSE: To develop a novel surgical approach to provide consistent delivery of cell suspension into the subretinal space without cell leakage into the vitreous. METHODS: Cell viability was assessed following mock injections to determine the optimal size cannula for delivery of the cells. A pars plana without vitrectomy approach was used to create a subretinal bleb with balanced salt solution using a 41-gauge cannula. GFP-labeled retinal pigment epithelium cells were injected through transretinal (n = 8) and transscleral (n = 16) injection approaches...
January 16, 2017: Retina
https://www.readbyqxmd.com/read/28098429/natural-history-of-nonimmune-mediated-thrombocytopenia-and-acute-kidney-injury-in-pediatric-open-heart-surgery
#3
Shannon Tew, Manuel L Fontes, Nathaniel H Greene, Miklos D Kertai, George Ofori-Amanfo, Robert D B Jaquiss, Andrew J Lodge, Warwick A Ames, Hercilia Mayumi Homi, Kelly A Machovec, Edmund H Jooste
OBJECTIVE: Thrombocytopenia and acute kidney injury (AKI) are common following pediatric cardiac surgery with cardiopulmonary bypass (CPB). However, the relationship between postoperative nadir platelet counts and AKI has not been investigated in the pediatric population. Our objective was to investigate this relationship and examine independent predictors of AKI. DESIGN: After IRB approval, we performed a retrospective review of the institution's medical records and database...
January 18, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28098405/shielding-engineered-islets-with-mesenchymal-stem-cells-enhance-survival-under-hypoxia
#4
Bhawna Chandravanshi, Ramesh Ramchandra Bhonde
In the present study we focused on the improvisation of islet survival in hypoxia.The Islet like cell aggregates (ICAs) derived from wharton's jelly mesenchymal stem cells (WJ MSC) were cultured with and without WJ MSC for 48h in hypoxia and normoxia and tested for their direct trophic effect on β cell survival. The WJ MSCs themselves secreted insulin upon glucose challenge and expressed the pancreatic markers at both transcription and translational level (C-peptide, Insulin,Glucagon and Glut 2). Direct contact of MSCs with ICAs facilitated highest viability under hypoxia as evidenced by fluorescein diacetate/propidium iodide and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assay...
January 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28098395/first-uhplc-ms-ms-method-coupled-with-automated-on-line-spe-for-quantification-both-of-tacrolimus-and-everolimus-in-peripheral-blood-mononuclear-cells-and-its-application-on-samples-from-co-treated-pediatric-patients
#5
Debora Pensi, Amedeo De Nicolò, Michele Pinon, Clarissa Pisciotta, Pier Luigi Calvo, Antonello Nonnato, Renato Romagnoli, Francesco Tandoi, Giovanni Di Perri, Antonio D'Avolio
Tacrolimus (TAC, FK-506) and everolimus (EVE, RAD001) are immunosuppressors used to treat pediatric patients undergoing liver transplantation. Their hematic TDM by liquid chromatography became standard practice. However, it does not always reflect concentrations at their active site. Our aim was to develop and validate a new method for the simultaneous TAC and EVE quantification into target cells: Peripheral-Blood-Mononuclear-Cells (PBMCs). PBMCs were collected using Cell-Preparation-Tubes; cells number and MCV were evaluated by an automatic cell counter...
January 18, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28098173/continuous-cell-supply-from-krt7-expressing-hematopoietic-stem-cells-during-native-hematopoiesis-revealed-by-targeted-in-vivo-gene-transfer-method
#6
Yoko Tajima, Keiichi Ito, Ayumi Umino, Adam C Wilkinson, Hiromitsu Nakauchi, Satoshi Yamazaki
The nature of hematopoietic stem cells under normal hematopoiesis remained largely unknown due to the limited assays available to monitor their behavior in situ. Here, we develop a new mouse model to transfer genes specifically into the primitive hematopoietic stem cell compartment through the utilization of a modified Rcas/TVA system. We succeeded in transferring a GFP reporter gene into adult hematopoietic stem cells in vivo, which are predominantly quiescent, by generating pseudotyped-lentivirus. Furthermore, we demonstrate the utility of this system to study neonatal hematopoiesis, a developmental stage that has been difficult to analyze to date...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097942/cd25-as-an-adverse-prognostic-factor-in-elderly-patients-with-acute-myeloid-leukemia
#7
Shin-Ichiro Fujiwara, Kazuo Muroi, Chihiro Yamamoto, Kaoru Hatano, Kiyoshi Okazuka, Kazuya Sato, Iekuni Oh, Ken Ohmine, Takahiro Suzuki, Keiya Ozawa
OBJECTIVES: CD25 has been reported to be highly expressed in leukemia stem cells and correlated with adverse outcomes in young patients with acute myeloid leukemia (AML). However, the significance of CD25 expression in elderly patients with AML has not yet been investigated. METHODS: We retrospectively analyzed 154 newly diagnosed AML patients aged 60 years or over by flow cytometry. RESULTS: CD25-positive AML was characterized by high white blood cell counts, secondary AML, rare favorable karyotypes, and positivity for CD34 and CD7 antigens, compared with CD25-negative AML...
January 18, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28097812/monitoring-immune-response-after-allogeneic-transplantation-of-mesenchymal-stem-cells-for-osteochondral-repair
#8
Elhussein Elbadry Mahmoud, Tanaka Yuka, Naosuke Kamei, Yohei Harada, Hideki Ohdan, Adachi Nobuo, Mitsuo Ochi
The aim of this study was to investigate safety of using allogeneic magnetically labeled mesenchymal stem cells (m-MSCs) to ameliorate osteochondral repair as well as autologous one, with immune surveillance using a mixed lymphocyte reaction (MLR) assay. Twenty knees of Japanese white rabbits were randomly divided into two groups: the control (autologous) group, the transplantation of 2 × 10(5)  m-MSCs and the experimental (allogeneic) group, transplantation of 2 × 10(5)  m-MSCs from Dutch rabbit was performed, with exposure to an external magnetic device for 10 minutes, then rabbits were euthanized after 12 weeks...
January 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28097811/fc-silent-anti-cd154-domain-antibody-effectively-prevents-non-human-primate-renal-allograft-rejection
#9
Steven C Kim, Walter Wakwe, Laura B Higginbotham, David V Mathews, Cynthia P Breeden, Allison C Stephenson, Joe Jenkins, Elizabeth Strobert, Karen Price, Laura Price, Robert Kuhn, Haiqing Wang, Aaron Yamniuk, Suzanne Suchard, Alton B Farris, Thomas C Pearson, Christian P Larsen, Mandy L Ford, Anish Suri, Steven Nadler, Andrew B Adams
The advent of costimulation blockade provides the prospect for targeted therapy with improved graft survival in transplant patients. Perhaps the most effective costimulation blockade in experimental models is the use of reagents to block the CD40/CD154 pathway. Unfortunately, successful clinical translation of anti-CD154 therapy has not been achieved. In an attempt to develop an agent that is as effective as previous CD154 blocking antibodies but lacks the risk of thromboembolism, we evaluated the efficacy and safety of a novel anti-human CD154 domain antibody (dAb, BMS-986004)...
January 17, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28097805/complement-polymorphisms-in-kidney-transplantation-critical-in-graft-rejection
#10
L A Michielsen, A D van Zuilen, I S Muskens, M C Verhaar, H G Otten
The complement system, as part of the innate immune system, plays an important role in renal transplantation. Complement is involved in the protection against foreign organisms and clearance of apoptotic cells but can also cause injury to the renal allograft for instance via antibody binding or in ischemia reperfusion injury. Numerous polymorphisms in complement factors have been identified thus far; some of them result in different functionalities or alter complement levels. In this review, we provide an overview of the literature on the role of complement polymorphisms in renal transplantation...
January 17, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28097735/autoimmune-enteropathy-and-hepatitis-in-pediatric-heart-transplant-recipient
#11
Kimberly Lewis, Ryan Butts, J Antonio Quiros, Michelle Hudspeth, Katherine Twombley, Andrew Savage, Sally Self, Ali Burnette, Shaoli Sun
AIE is a rare disorder in children that presents with severe diarrhea and malabsorption, caused by immune-mediated damage to intestinal mucosa. AIE is often associated with various syndromes of immunodeficiency including IPEX syndrome (immune dysregulation, polyendocrinopathy and enteropathy, X-linked). Dysfunctional T regulatory cells are the source of pathology in both IPEX syndrome and AIE as they are essential in maintaining tolerance to self-antigens and eliminating autoreactive B cells. This case report describes a 10-year-old cardiac transplant and total thymectomy patient on chronic immunosuppression with tacrolimus that presented with AIE and extraintestinal manifestations of cyclical hepatitis...
January 17, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28097640/priming-increases-the-anti-tumor-effect-and-therapeutic-window-of-177-lu-octreotate-in-nude-mice-bearing-human-small-intestine-neuroendocrine-tumor-got1
#12
Johanna Dalmo, Johan Spetz, Mikael Montelius, Britta Langen, Yvonne Arvidsson, Henrik Johansson, Toshima Z Parris, Khalil Helou, Bo Wängberg, Ola Nilsson, Maria Ljungberg, Eva Forssell-Aronsson
BACKGROUND: (177)Lu-[DOTA(0), Tyr(3)]-octreotate ((177)Lu-octreotate) is used for treatment of patients with somatostatin receptor (SSTR) expressing neuroendocrine tumors. However, complete tumor remission is rarely seen, and optimization of treatment protocols is needed. In vitro studies have shown that irradiation can up-regulate the expression of SSTR1, 2 and 5, and increase (177)Lu-octreotate uptake. The aim of the present study was to examine the anti-tumor effect of a (177)Lu-octreotate priming dose followed 24 h later by a second injection of (177)Lu-octreotate compared to a single administration of (177)Lu-octreotate, performed on the human small intestine neuroendocrine tumor cell line, GOT1, transplanted to nude mice...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28097534/successful-treatment-with-low-dose-nivolumab-in-refractory-hodgkin-lymphoma-after-allogeneic-stem-cell-transplantation
#13
Makoto Onizuka, Minoru Kojima, Keiko Matsui, Shinichiro Machida, Masako Toyosaki, Yasuyuki Aoyama, Hidetsugu Kawai, Jun Amaki, Ryujiro Hara, Akifumi Ichiki, Yoshiaki Ogawa, Hiroshi Kawada, Naoya Nakamura, Kiyoshi Ando
Previous studies have reported that an antibody that blocks programmed cell death 1 (PD-1) has therapeutic activity in patients with refractory/relapsed Hodgkin lymphoma (HL). However, the safety and efficacy of these agents in the post-allogeneic stem cell transplantation (allo-SCT) setting are not well known. Here, we describe a patient who was diagnosed as classical HL and treated with five regimens of chemotherapies with autologous SCT. Complete remission (CR) was not achieved following this initial treatment, so we performed allo-SCT from an HLA-matched sibling donor...
January 17, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28097368/incidence-of-and-risk-factors-for-skin-cancer-in-organ-transplant-recipients-in-the-united-states
#14
Giorgia L Garrett, Paul D Blanc, John Boscardin, Amanda Abramson Lloyd, Rehana L Ahmed, Tiffany Anthony, Kristin Bibee, Andrew Breithaupt, Jennifer Cannon, Amy Chen, Joyce Y Cheng, Zelma Chiesa-Fuxench, Oscar R Colegio, Clara Curiel-Lewandrowski, Christina A Del Guzzo, Max Disse, Margaret Dowd, Robert Eilers, Arisa Elena Ortiz, Caroline Morris, Spring K Golden, Michael S Graves, John R Griffin, R Samuel Hopkins, Conway C Huang, Gordon Hyeonjin Bae, Anokhi Jambusaria, Thomas A Jennings, Shang I Brian Jiang, Pritesh S Karia, Shilpi Khetarpal, Changhyun Kim, Goran Klintmalm, Kathryn Konicke, Shlomo A Koyfman, Charlene Lam, Peter Lee, Justin J Leitenberger, Tiffany Loh, Stefan Lowenstein, Reshmi Madankumar, Jacqueline F Moreau, Rajiv I Nijhawan, Shari Ochoa, Edit B Olasz, Elaine Otchere, Clark Otley, Jeremy Oulton, Parth H Patel, Vishal Anil Patel, Arpan V Prabhu, Melissa Pugliano-Mauro, Chrysalyne D Schmults, Sarah Schram, Allen F Shih, Thuzar Shin, Seaver Soon, Teresa Soriano, Divya Srivastava, Jennifer A Stein, Kara Sternhell-Blackwell, Stan Taylor, Allison Vidimos, Peggy Wu, Nicholas Zajdel, Daniel Zelac, Sarah T Arron
Importance: Skin cancer is the most common malignancy occurring after organ transplantation. Although previous research has reported an increased risk of skin cancer in solid organ transplant recipients (OTRs), no study has estimated the posttransplant population-based incidence in the United States. Objective: To determine the incidence and evaluate the risk factors for posttransplant skin cancer, including squamous cell carcinoma (SCC), melanoma (MM), and Merkel cell carcinoma (MCC) in a cohort of US OTRs receiving a primary organ transplant in 2003 or 2008...
January 11, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28096984/chryseobacterium-indologenes-a-possible-emergent-organism-resistant-to-carbapenem-antimicrobials-after-stem-cell-transplantation
#15
Osamu Imataki, Makiko Uemura
A 64-year-old female was diagnosed with adult T-cell leukemia/lymphoma. She then underwent an unrelated allogeneic bone marrow transplantation with a reduced-intensity regimen. She achieved engraftment followed by HHV-6 encephalopathy. This was complicated by Chryseobacterium indologenes pneumonia. Chryseobacterium indologenes is now a possible emergent organism resistant to carbapenem after transplantation.
January 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28096964/g-csf-for-mobilizing-transplanted-bone-marrow-stem-cells-in-rat-model-of-parkinson-s-disease
#16
Manouchehr Safari, Behnaz Jafari, Sam Zarbakhsh, Hamidreza Sameni, Abbas Ali Vafaei, Nasrin Khan Mohammadi, Laya Ghahari
OBJECTIVES: Granulocyte-colony stimulating factor (G-CSF) is used in clinical practice for the treatment of neutropenia and to stimulate generation of hematopoietic stem cells in bone marrow donors. In the present study, the ability of G-CSF in mobilizing exogenous bone marrow stem cells (BMSCs) from peripheral blood into the brain was tested. We for the first time injected a small amount of BMSCs through the tail vein. MATERIALS AND METHODS: We choose 25 male Wistar rats (200-250 g) were lesioned by 6-OHDA injected into the left substantia nigra, pars compacta (SNpc)...
December 2016: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28096512/papers-of-note-in-science-translational-medicine-9-372
#17
Leslie K Ferrarelli
This week's papers describe new therapeutic avenues to kill tumor-initiating cells in breast, ovarian, and lung cancer patients; mitigate graft-versus-host disease after hematopoietic cell transplants in leukemia patients; and stimulate bone healing in diabetic patients.
January 17, 2017: Science Signaling
https://www.readbyqxmd.com/read/28096400/defining-recovery-neurobiology-of-injured-spinal-cord-by-synthetic-matrix-assisted-hmsc-implantation
#18
Alexander E Ropper, Devang K Thakor, InBo Han, Dou Yu, Xiang Zeng, Jamie E Anderson, Zaid Aljuboori, Soo-Woo Kim, Hongjun Wang, Richard L Sidman, Ross D Zafonte, Yang D Teng
Mesenchymal stromal stem cells (MSCs) isolated from adult tissues offer tangible potential for regenerative medicine, given their feasibility for autologous transplantation. MSC research shows encouraging results in experimental stroke, amyotrophic lateral sclerosis, and neurotrauma models. However, further translational progress has been hampered by poor MSC graft survival, jeopardizing cellular and molecular bases for neural repair in vivo. We have devised an adult human bone marrow MSC (hMSC) delivery formula by investigating molecular events involving hMSCs incorporated in a uniquely designed poly(lactic-co-glycolic) acid scaffold, a clinically safe polymer, following inflammatory exposures in a dorsal root ganglion organotypic coculture system...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096390/modification-of-host-dendritic-cells-by-microchimerism-derived-extracellular-vesicles-generates-split-tolerance
#19
William Bracamonte-Baran, Jonathan Florentin, Ying Zhou, Ewa Jankowska-Gan, W John Haynes, Weixiong Zhong, Todd V Brennan, Partha Dutta, Frans H J Claas, Jon J van Rood, William J Burlingham
Maternal microchimerism (MMc) has been associated with development of allospecific transplant tolerance, antitumor immunity, and cross-generational reproductive fitness, but its mode of action is unknown. We found in a murine model that MMc caused exposure to the noninherited maternal antigens in all offspring, but in some, MMc magnitude was enough to cause membrane alloantigen acquisition (mAAQ; "cross-dressing") of host dendritic cells (DCs). Extracellular vesicle (EV)-enriched serum fractions from mAAQ(+), but not from non-mAAQ, mice reproduced the DC cross-dressing phenomenon in vitro...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096363/an-rna-based-signature-enables-high-specificity-detection-of-circulating-tumor-cells-in-hepatocellular-carcinoma
#20
Mark Kalinich, Irun Bhan, Tanya T Kwan, David T Miyamoto, Sarah Javaid, Joseph A LiCausi, John D Milner, Xin Hong, Lipika Goyal, Srinjoy Sil, Melissa Choz, Uyen Ho, Ravi Kapur, Alona Muzikansky, Huidan Zhang, David A Weitz, Lecia V Sequist, David P Ryan, Raymond T Chung, Andrew X Zhu, Kurt J Isselbacher, David T Ting, Mehmet Toner, Shyamala Maheswaran, Daniel A Haber
Circulating tumor cells (CTCs) are shed into the bloodstream by invasive cancers, but the difficulty inherent in identifying these rare cells by microscopy has precluded their routine use in monitoring or screening for cancer. We recently described a high-throughput microfluidic CTC-iChip, which efficiently depletes hematopoietic cells from blood specimens and enriches for CTCs with well-preserved RNA. Application of RNA-based digital PCR to detect CTC-derived signatures may thus enable highly accurate tissue lineage-based cancer detection in blood specimens...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
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