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https://www.readbyqxmd.com/read/28629733/an-optimized-protocol-for-the-generation-and-functional-analysis-of-human-mast-cells-from-cd34-enriched-cell-populations
#1
Yuzhi Yin, Yun Bai, Ana Olivera, Avanti Desai, Dean D Metcalfe
The culture of mast cells from human tissues such a cord blood, peripheral blood or bone marrow aspirates has advanced our understanding of human mast cells (huMC) degranulation, mediator production and response to pharmacologic agents. However, existing methods for huMC culture tend to be laborious and expensive. Combining technical approaches from several of these protocols, we designed a simplified and more cost effective approach to the culture of mast cells from human cell populations including peripheral blood and cryopreserved cells from lymphocytapheresis...
June 16, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28626219/base-excision-repair-proteins-couple-activation-induced-cytidine-deaminase-and-endonuclease-g-during-replication-stress-induced-mll-destabilization
#2
B Gole, E Mian, M Rall, L Wiesmüller
The breakpoint cluster region of the MLL gene (MLLbcr) is frequently rearranged in therapy-related and infant acute leukaemia, but the destabilizing mechanism is poorly understood. We recently proposed that DNA replication stress results in MLLbcr cleavage via Endonuclease G (EndoG) and represents the common denominator of genotoxic therapy-induced MLL destabilization. Here we performed a siRNA screen for new factors involved in replication stress-induced MLL rearrangements employing an EGFP-based reporter system...
June 19, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28623394/disease-specific-hematopoietic-stem-cell-transplantation-in-children-with-inherited-bone-marrow-failure-syndromes
#3
Qian Li, Changying Luo, Chengjuan Luo, Jianmin Wang, Benshang Li, Lixia Ding, Jing Chen
Hematopoietic stem cell transplantation (HSCT) using an optimized conditioning regimen is essential for the long-term survival of patients with inherited bone marrow failure syndromes (IBMFS). We report HSCT in 24 children with Fanconi anemia (FA, n = 12), Diamond-Blackfan anemia (DBA, n = 7), and dyskeratosis congenita (DC, n = 5) from a single HSCT center. The graft source was peripheral blood stem cells (n = 19) or cord blood stem cells (n = 5). FA and DC patients received reduced-intensity conditioning, while DBA patients had myeloablative conditioning...
June 16, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28618139/large-scale-ex-vivo-generation-of-human-red-blood-cells-from-cord-blood-cd34-cells
#4
Yu Zhang, Chen Wang, Lan Wang, Bin Shen, Xin Guan, Jing Tian, Zhihua Ren, Xinxin Ding, Yupo Ma, Wei Dai, Yongping Jiang
The ex vivo generation of human red blood cells on a large scale from hematopoietic stem and progenitor cells has been considered as a potential method to overcome blood supply shortages. Here, we report that functional human erythrocytes can be efficiently produced from cord blood (CB) CD34(+) cells using a bottle turning device culture system. Safety and efficiency studies were performed in murine and nonhuman primate (NHP) models. With the selected optimized culture conditions, one human CB CD34(+) cell could be induced ex vivo to produce up to 200 million erythrocytes with a purity of 90...
June 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28618138/expansion-of-umbilical-cord-blood-aldehyde-dehydrogenase-expressing-cells-generates-myeloid-progenitor-cells-that-stimulate-limb-revascularization
#5
David M Putman, Tyler T Cooper, Stephen E Sherman, Ayesh K Seneviratne, Mark Hewitt, Gillian I Bell, David A Hess
Uncompromised by chronic disease-related comorbidities, human umbilical cord blood (UCB) progenitor cells with high aldehyde dehydrogenase activity (ALDH(hi) cells) stimulate blood vessel regeneration after intra-muscular transplantation. However, implementation of cellular therapies using UCB ALDH(hi) cells for critical limb ischemia, the most severe form of severe peripheral artery disease, is limited by the rarity (<0.5%) of these cells. Our goal was to generate a clinically-translatable, allogeneic cell population for vessel regenerative therapies, via ex vivo expansion of UCB ALDH(hi) cells without loss of pro-angiogenic potency...
June 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28615039/interleukin-21-promotes-thymopoiesis-recovery-following-hematopoietic-stem-cell-transplantation
#6
Aurélie Tormo, Fatemeh Khodayarian, Yun Cui, Edouard Al-Chami, Reem Kanjarawi, Beatriz Noé, Huijie Wang, Moutih Rafei
BACKGROUND: Impaired T cell reconstitution remains a major deterrent in the field of bone marrow (BM) transplantation (BMT) due to pre-conditioning-induced damages inflicted to the thymi of recipient hosts. Given the previously reported thymo-stimulatory property of interleukin (IL)-21, we reasoned that its use post-BMT could have a profound effect on de novo T cell development. METHODS: To evaluate the effect of IL-21 on de novo T cell development in vivo, BM derived from RAG2p-GFP mice was transplanted into LP/J mice...
June 14, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28609144/therapeutic-benefit-of-mesenchymal-stem-cells-in-pregnant-rats-with-angiotensin-receptor-agonistic-autoantibody-induced-hypertension-implications-for-immunomodulation-and-cytoprotection
#7
Dan Zhang, Lihua Fu, Leilei Wang, Lin Lin, Lihong Yu, Lijun Zhang, Tao Shang
Immunomodulation by mesenchymal stem cells (MSCs) is potentially important for maintaining peripheral tolerance. Preeclampsia may be due to maternal immune rejection of the genetically foreign fetus. This study aimed to investigate the biological function of human umbilical cord-derived mesenchymal stem cells (HU-MSCs) for the treatment of angiotensin receptor agonistic autoantibody (AT1-AA)-induced hypertension during pregnancy. HU-MSCs were isolated, cultured, and labeled in vitro. AT1-AA and HU-MSCs were administered to pregnant rats...
June 13, 2017: Hypertension in Pregnancy
https://www.readbyqxmd.com/read/28607914/reconstitution-of-adaptive-immunity-after-umbilical-cord-blood-transplantation-impact-on-infectious-complications
#8
REVIEW
Sophie Servais, Muriel Hannon, Régis Peffault de Latour, Gérard Socie, Yves Beguin
In comparison with allogeneic stem cell transplantation (alloHSCT) with other stem cell sources, umbilical cord blood transplantation (UCBT) was traditionally associated with increased risk of infections, particularly during the first 3 months after transplantation. Longitudinal studies of immune monitoring reported peculiar patterns of T- and B-cell recovery in the peripheral blood of UCB recipients during the first months post-transplantation. Overall, current data suggest delayed reconstitution of naive and memory CD4(+) and CD8(+) T-cell pools after UCBT...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28602130/a-novel-method-for-the-activation-of-platelet-rich-plasma-via-bead-mill-homogenizer-for-mesenchymal-stem-cell-culture
#9
Hyunwook Myung, Hyosun Jang, Jae Kyung Myung, Min-Jung Kim, Seung Bum Lee, Won-Suk Jang, Sun-Joo Lee, Hwi-Yool Kim, Seung-Sook Lee, Sehwan Shim, Sunhoo Park
Activated platelet-rich plasma (PRP) has been studied as a replacement for fetal bovine serum (FBS) in stem cell culture. However, current methods are time-consuming or require addition of exogenous substances to activate PRP, which have disadvantages in clinical applications. In this study, we developed a new method for PRP activation using a bead mill homogenizer and compared it with previous methods of PRP activation. PRP was prepared via a two-step centrifugation process and activated via calcium (Ca-PRP), freeze-thaw cycles (FT-PRP), or bead mill homogenizer processing (BM-PRP)...
June 10, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28601931/cardiotrophin-1-stimulates-the-neural-differentiation-of-human-umbilical-cord-blood-derived-mesenchymal-stem-cells-and-survival-of-differentiated-cells-through-pi3k-akt-dependent-signaling-pathways
#10
Longying Peng, Xiaomei Shu, Changhui Lang, Xiaohua Yu
Cardiotrophin-1 (CT1) plays an important role in the differentiation, development, and survival of neural stem cells. In this study, we analyzed its effects on the stimulation of human umbilical cord blood-derived mesenchymal stem cells in terms of their potential to differentiate into neuron-like cells, their survival characteristics, and the molecular mechanisms involved. The treatment of cells with neural induction medium (NIM) and CT1 generated more cells that were neuron-like and produced stronger expression of neural-lineage markers than cells treated with NIM and without CT1...
June 10, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28601677/impact-of-stem-cell-graft-on-early-viral-infections-and-immune-reconstitution-after-allogeneic-transplantation-in-adults
#11
Marina Illiaquer, Berthe-Marie Imbert-Marcille, Thierry Guillaume, Lucie Planche, Marie Rimbert, Céline Bressollette-Bodin, Amandine Le Bourgeois, Pierre Peterlin, Alice Garnier, Claire Le Houerou, Philippe Moreau, Mohamad Mohty, Patrice Chevallier
BACKGROUND: Viral infections are well-known complications after allogeneic stem cell transplant (allo-SCT). OBJECTIVES: We compared prospectively incidences of DNAemia and active infections (AI) for five opportunistic viruses (Human Herpesvirus 6 (HHV-6), Epstein-Barr virus (EBV), BK polyomavirus (BKPyV), Cytomegalovirus (CMV) and Adenovirus (ADV)) and kinetics of immune reconstitution (IR) in adults receiving either double umbilical cord blood (dUCB group) or unrelated peripheral blood stem cell (uPBSC group) allo-SCT after a reduced-intensity conditioning (RIC) regimen...
May 31, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28601197/a-comparative-study-to-evaluate-myogenic-differentiation-potential-of-human-chorion-versus-umbilical-cord-blood-derived-mesenchymal-stem-cells
#12
Nikoo Bana, Davood Sanooghi, Mansoureh Soleimani, Nasim Hayati Roodbari, Sepideh Alavi Moghaddam, Mohammad Taghi Joghataei, Forough Azam Sayahpour, Faezeh Faghihi
OBJECTIVE: Musculodegenerative diseases threaten the life of many patients in the world. Since drug administration is not efficient in regeneration of damaged tissues, stem cell therapy is considered as a good strategy to restore the lost cells. Since the efficiency of myogenic differentiation potential of human Chorion- derived Mesenchymal Stem Cells (C-MSCs) has not been addressed so far; we set out to evaluate myogenic differentiation property of these cells in comparison with Umbilical Cord Blood- derived Mesenchymal Stem Cells (UCB-MSCs) in the presence of 5-azacytidine...
May 11, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28599428/bosutinib-as-a-fourth-line-therapy-for-a-patient-with-t315i-positive-lymphoid-blastic-phase-chronic-myeloid-leukemia-a-case-report
#13
Yukiko Komeno, Naoyuki Uchida, Yumiko Satoh, Hideki Uryu, Yuko Iwata, Akiko Masuda, Kuniko Iihara, Yutaka Yatomi, Shuichi Taniguchi, Tomiko Ryu
A 35-year-old male was diagnosed with chronic myeloid leukemia in the chronic phase and was prescribed 100 mg daily dasatinib. However, dasatinib was discontinued due to thrombocytopenia, and within six months, the disease progressed to the lymphoid blastic phase. Hyper-cyclophosphamide, vincristine, adriamycin and dexamethasone chemotherapy combined with 140 mg dasatinib or 600 mg imatinib was prescribed. The two inhibitors were soon discontinued due to severe thrombocytopenia and jaundice, respectively. Myelosuppression persisted subsequent to the nadir...
June 2017: Oncology Letters
https://www.readbyqxmd.com/read/28593744/thermosensitive-heparin-poloxamer-hydrogels-enhance-the-effects-of-gdnf-on-neuronal-circuit-remodelling-and-neuroprotection-after-spinal-cord-injury
#14
Ying-Zheng Zhao, Xi Jiang, Qian Lin, He-Lin Xu, Ya-Dong Huang, Cui-Tao Lu, Jun Cai
Traumatic spinal cord injury (SCI) results in paraplegia or quadriplegia, and currently, therapeutic interventions for axonal regeneration after SCI are not clinically available. Animal studies have revealed that glial cell-derived neurotrophic factor (GDNF) plays multiple beneficial roles in neuroprotection, glial scarring remodelling, axon regeneration and remyelination in SCI. However, the poor physicochemical stability of GDNF, as well as its limited ability to cross the blood-spinal cord barrier, hampers the development of GDNF as an effective therapeutic intervention in clinical practice...
June 7, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28592755/acute-myeloid-leukemia-developing-secondary-immune-thrombocytopenia-after-umbilical-cord-blood-transplantation
#15
Rena Matsumoto, Kazuhiro Ito, Naoko Hosono, Yasufumi Matsuda, Katsunori Tai, Ippei Sakamaki, Goh Aoki, Hirohito Yamazaki, Shinji Nakao, Takahiro Yamauchi
A 64-year-old man was diagnosed with acute myeloid leukemia M2 (FLT3-ITD-positive). After induction chemotherapy and four courses of consolidation therapy, he underwent umbilical cord blood transplantation (CBT) in his first remission. He developed acute graft-versus-host disease (skin stage 2) after successful engraftment. On post-transplantation day 147, he was admitted to the hospital suffering from pneumonia. During the treatment, drastic thrombocytopenia was observed on day 251. Both platelet-associated immunoglobulin G and platelet antibody producing B cells were detected, and he was diagnosed with immune thrombocytopenia (ITP)...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28590064/breast-cancer-stem-cell-therapeutics-multiple-strategies-versus-using-engineered-mesenchymal-stem-cells-with-notch-inhibitory-properties-possibilities-and-perspectives
#16
Bipasha Bose, Utsav Sen, Sudheer Shenoy P
Relapse cases of cancers are more vigorous and difficult to control due to the preponderance of cancer stem cells (CSCs). Such CSCs that had been otherwise dormant during the first incidence of cancer gradually appear as radiochemoresistant cancer cells. Hence, cancer therapeutics aimed at CSCs would be an effective strategy for mitigating the cancers during relapse. Alternatively, CSC therapy can also be proposed as an adjuvant therapy, along-with the conventional therapies. As regenerative stem cells (RSCs) are known for their trophic effects, anti-tumorogenicity and better migration towards an injury site, this review aims to address the use of adult stem cells such as dental pulp derived; cord blood derived pure populations of regenerative stem cells for targeting CSCs...
June 7, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28585911/transplant-of-hepatocytes-undifferentiated-mesenchymal-stem-cells-and-in-vitro-hepatocyte-differentiated-mesenchymal-stem-cells-in-a-chronic-liver-failure-experimental-model-a-comparative-study
#17
Hanan El Baz, Zeinab Demerdash, Manal Kamel, Shimaa Atta, Faten Salah, Salwa Hassan, Olfat Hammam, Heba Khalil, Safa Meshaal, Inas Raafat
OBJECTIVES: Liver transplant is the cornerstone line of treatment for chronic liver diseases; however, the long list of complications and obstacles stand against this operation. Searching for new modalities for treatment of chronic liver illness is a must. In the present research, we aimed to compare the effects of transplant of undifferentiated human mesenchymal stem cells, in vitro differentiated mesenchymal stem cells, and adult hepatocytes in an experimental model of chronic liver failure...
June 5, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28585228/development-and-testing-of-a-stepwise-thaw-and-dilute-protocol-for-cryopreserved-umbilical-cord-blood-units
#18
Roya Pasha, Heidi Elmoazzen, Nicolas Pineault
BACKGROUND: It is clinically important to maintain high viability and potency of umbilical cord blood units (CBUs) for transplantation during thawing. In the absence of a standard thawing protocol, this study was designed to develop one based on the consensus practice of transplant centers and address the shortage of dextran 40 thawing solution. STUDY DESIGN AND METHODS: Frozen CBU aliquots were thawed using dextran 40 thawing solution while manipulating temperature and volume of diluent and mode of dilution...
June 5, 2017: Transfusion
https://www.readbyqxmd.com/read/28583028/a-novel-method-for-the-isolation-of-pluripotent-stem-cells-from-human-umbilical-cord-blood
#19
Manuela Monti, Barbara Imberti, Niccolò Bianchi, Anna Pezzotta, Marina Morigi, Claudia Del Fante, Carlo Alberto Redi, Cesare Perotti
Very Small Embryonic-Like cells (VSELs) are a population of very rare pluripotent stem cells isolated in adult murine bone marrow and many other tissues and organs, including umbilical cord blood. VSELs existence is still not universally accepted by the scientific community so, on this purpose, we sought to investigate whether presumptive VSELs (pVSELs) could be isolated from human umbilical cord blood with an improved protocol based on the isolation of enriched progenitor cells by depletion of non-progenitor cells with magnetic separation...
June 5, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28578010/unrelated-umbilical-cord-blood-transplantation-for-sickle-cell-disease-following-reduced-intensity-conditioning-results-of-a-phase-i-trial
#20
Allistair Abraham, Andrew Cluster, David Jacobsohn, David Delgado, Monica L Hulbert, Divyesh Kukadiya, Lisa Murray, Shalini Shenoy
Hematopoietic stem cell transplantation from HLA-matched sibling donors results in disease free survival of >90% in patients with sickle cell disease (SCD) but only about 18% have suitable donors. Unrelated cord blood transplantation (UCBT) is one way to expand donor options for patients with severe SCD but historically has been associated with high graft rejection rates (50-62%). We hypothesized that the addition of thiotepa to a previously tested reduced intensity conditioning (RIC) regimen would support engraftment after UCBT in SCD patients...
May 31, 2017: Biology of Blood and Marrow Transplantation
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