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Hepatic stem cell

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https://www.readbyqxmd.com/read/28104292/hepatic-prominin-1-expression-is-associated-with-biliary-fibrosis
#1
Marie V Nguyen, Jessica A Zagory, William H Dietz, Alex Park, Michael Fenlon, Menghan Zhao, Jiabo Xu, Ingrid Lua, Nirmala Mavila, Kenji Asahina, Kasper S Wang
BACKGROUND: Intrahepatic biliary fibrosis, as seen with cholestatic liver injuries such as biliary atresia, is mechanistically distinct from fibrosis caused by hepatocyte toxicity. We previously demonstrated the expansion of cells expressing the stem/progenitor cell marker Prominin-1, within regions of developing fibrosis in biliary atresia. Thus, we hypothesized that Prominin-1 expression is biliary fibrosis-specific. METHODS: Gene expression of Prominin-1 was analyzed in adult mice undergoing either cholestatic bile duct ligation or hepatotoxic carbon tetrachloride administration by quantitative polymerase chair reaction...
January 16, 2017: Surgery
https://www.readbyqxmd.com/read/28102846/hepatitis-b-virus-x-protein-promotes-the-stem-like-properties-of-ov6-cancer-cells-in-hepatocellular-carcinoma
#2
Chao Wang, Ming-da Wang, Peng Cheng, Hai Huang, Wei Dong, Wei-Wei Zhang, Peng-Peng Li, Chuan Lin, Ze-Ya Pan, Meng-Chao Wu, Wei-Ping Zhou
Hepatitis B virus X protein (HBx) and cancer stem-like cells (CSCs) have both been implicated in the occurrence and development of HBV-related hepatocellular carcinoma (HCC). However, whether HBx contributes to the stem-like properties of OV6(+) CSCs in HCC remains elusive. In this study, we showed that the concomitant expression of HBx and OV6 was closely associated with the clinical outcomes and prognosis of patients with HBV-related HCC. HBx was required for the stem-like properties of OV6(+) liver CSCs, including self-renewal, stem cell-associated gene expression, tumorigenicity and chemoresistance...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28102609/immunogenicity-of-hepatic-differentiated-human-umbilical-cord-mesenchymal-stem-cells-promoted-by-porcine-decellularized-liver-scaffolds
#3
Yi Li, Qiong Wu, Yujia Wang, Li Li, Fei Chen, Yujun Shi, Hong Bu, Ji Bao
Cell-based approaches, including hepatocyte transplantation and tissue-engineered livers, offer promising alternatives and are expected to help support patients with liver diseases until liver transplantation or recovery via regeneration of the damaged liver. However, the success of cell therapies remains dependent on how well the cells are accepted after transplantation and is directly related to their degree of immunogenicity. In this study, hepatic differentiation of human umbilical cord mesenchymal stem cells (hUC-MSCs) was induced in the traditional monolayer (2D) culture and newly established three-dimensional (3D) aggregation culture with the porcine decellularized liver scaffold (DLS) system (3D-DLS)...
January 19, 2017: Xenotransplantation
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
#4
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/28098253/the-clinically-approved-antiviral-drug-sofosbuvir-inhibits-zika-virus-replication
#5
Carolina Q Sacramento, Gabrielle R de Melo, Caroline S de Freitas, Natasha Rocha, Lucas Villas Bôas Hoelz, Milene Miranda, Natalia Fintelman-Rodrigues, Andressa Marttorelli, André C Ferreira, Giselle Barbosa-Lima, Juliana L Abrantes, Yasmine Rangel Vieira, Mônica M Bastos, Eduardo de Mello Volotão, Estevão Portela Nunes, Diogo A Tschoeke, Luciana Leomil, Erick Correia Loiola, Pablo Trindade, Stevens K Rehen, Fernando A Bozza, Patrícia T Bozza, Nubia Boechat, Fabiano L Thompson, Ana M B de Filippis, Karin Brüning, Thiago Moreno L Souza
Zika virus (ZIKV) is a member of the Flaviviridae family, along with other agents of clinical significance such as dengue (DENV) and hepatitis C (HCV) viruses. Since ZIKV causes neurological disorders during fetal development and in adulthood, antiviral drugs are necessary. Sofosbuvir is clinically approved for use against HCV and targets the protein that is most conserved among the members of the Flaviviridae family, the viral RNA polymerase. Indeed, we found that sofosbuvir inhibits ZIKV RNA polymerase, targeting conserved amino acid residues...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28089078/hucmsc-exosome-derived-gpx1-is-required-for-the-recovery-of-hepatic-oxidant-injury
#6
Yongmin Yan, Wenqian Jiang, Youwen Tan, Shengqiang Zou, Hongguang Zhang, Fei Mao, Aihua Gong, Hui Qian, Wenrong Xu
Exosomes are small biological membrane vesicles secreted by various cells, including mesenchymal stem cells (MSCs). We previously reported that MSC-derived exosomes (MSC-Ex) can elicit hepatoprotective effects against toxicant-induced injury. However, the success of MSC-Ex-based therapy for treatment of liver diseases and the underlying mechanisms have not been well characterized. We used human umbilical cord MSC-derived exosome (hucMSC-Ex) administrated by tail vein or oral gavage at different doses and, in engrafted liver mouse models, noted antioxidant and anti-apoptotic effects and rescue from liver failure...
January 6, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28088963/-clinical-characteristics-and-prognosis-in-12-patients-with-adult-t-cell-leukemia-lymphoma-confirmed-by-htlv-1-provirus-gene-detection
#7
Z J Wu, X Y Zheng, X Z Yang, T B Liu, T Yang, Z H Zheng, F Gao, C X Chen, J G Li, C Q Zhang, W Q Lin, H Y Zheng, S X Lin, J D Hu
Objective: To analyze the clinical characteristics and prognosis of adult T cell leukemia/lymphoma (ATLL). Methods: Peripheral blood samples from patients who were suspected as ATLL from March, 2013 to July, 2015, were collected for HTLV-1 provirus genes detection in genomic DNA extraction by PCR. Cases showing positive results were confirmed as ATLL. Clinical and laboratory characteristics, therapeutic outcomes and survival evaluation were collected. Results: 12 out of 23 suspected patients were confirmedly diagnosed as ATLL through HTLV-1 provirus genes detection by PCR...
December 14, 2016: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28073785/safety-and-efficacy-of-allogeneic-hematopoietic-stem-cell-transplant-after-pd-1-blockade-in-relapsed-refractory-lymphoma
#8
Reid W Merryman, Haesook T Kim, Pier Luigi Zinzani, Carmelo Carlo-Stella, Stephen M Ansell, Miguel-Angel Perales, Abraham Avigdor, Ahmad S Halwani, Roch Houot, Tony Marchand, Nathalie Dhedin, Willy Lescaut, Anne Thiebaut-Bertrand, Sylvie François, Aspasia Stamatoullas-Bastard, Pierre-Simon Rohrlich, Hélène Labussière Wallet, Luca Castagna, Armando Santoro, Veronika Bachanova, Scott C Bresler, Amitabh Srivastava, Harim Kim, Emily Pesek, Marie Chammas, Carol Reynolds, Vincent T Ho, Joseph H Antin, Jerome Ritz, Robert J Soiffer, Philippe Armand
Anti-PD-1 monoclonal antibodies are being increasingly tested in patients with advanced lymphoma. Following treatment, many of those patients are likely to be candidates for allogeneic hematopoietic stem cell transplant (HSCT). However, the safety and efficacy of HSCT may be affected by prior PD-1 blockade. We conducted an international retrospective analysis of 39 patients with lymphoma who received prior treatment with a PD-1 inhibitor, at a median time of 62 days (7-260) before HSCT. After a median follow-up of 12 months, the one-year cumulative incidences of grade 2-4 and grade 3-4 acute graft-versus-host disease (GVHD) were 44% and 23% respectively, while the one-year incidence of chronic GVHD was 41%...
January 10, 2017: Blood
https://www.readbyqxmd.com/read/28073411/-effect-of-umbilical-cord-mesenchymal-stem-cell-transplantation-on-immune-function-and-prognosis-of-patients-with-decompensated-hepatitis-b-cirrhosis
#9
X Q Fang, J F Zhang, H Y Song, Z L Chen, J Dong, X Chen, J J Pan, B Liu, C X Chen
Objective: To investigate the effect of human umbilical cord mesenchymal stem cells (hUCMSCs) on the immune function and prognosis of patients with decompensated hepatitis B cirrhosis. Methods: A total of 65 patients with decompensated hepatitis B cirrhosis were divided into observation group and control group. The patients in the observation group were given intervention (via the proper hepatic artery or the portal vein) and intravenous infusion of 4×10(8) hUCMSCs in two doses, as well as the same basic treatment as in the control group...
December 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28073160/activation-of-jnk-pathway-aggravates-proteotoxicity-of-hepatic-mutant-z-alpha1-antitrypsin
#10
Nunzia Pastore, Sergio Attanasio, Barbara Granese, Jeffrey Teckman, Andrew A Wilson, Andrea Ballabio, And Nicola Brunetti-Pierri
Alpha1-antitrypsin deficiency is a genetic disease that can affect both the lung and the liver. The vast majority of patients harbor a mutation in the SERPINA1 gene resulting in a single amino acid substitution that results in an unfolded protein that is prone to polymerization. Therefore, the liver disease is caused by a gain of function mechanism due to accumulation of the mutant Z alpha1-antitrypsin (ATZ) and is a key example of an important disease mechanism induced by protein toxicity. Intracellular retention of ATZ triggers a complex injury cascade including apoptosis and other mechanisms, although several aspects of the disease pathogenesis are still unclear...
January 10, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28067868/fatal-autochthonous-fulminant-hepatitis-e-early-after-allogeneic-stem-cell-transplantation
#11
M Carré, A Thiebaut-Bertrand, S Larrat, V Leroy, P Pouzol, N Sturm, S Lhomme, J-Y Cahn, F Garban, P Morand
No abstract text is available yet for this article.
January 9, 2017: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/28063964/impact-of-hepatitis-b-core-antibody-hbcab-seropositivity-on-the-outcome-of-autologous-hematopoietic-stem-cell-transplantation-for-multiple-myeloma
#12
Ankur Varma, Laura Biritxinaga, Rima M Saliba, Maximilian Stich, Sarah Francesca Jauch, Aimaz Afrough, Medhavi Honhar, Uday R Popat, Mehnaz A Shafi, Nina Shah, Qaiser Bashir, Yvonne Dinh, Chitra Hosing, Richard E Champlin, Muzaffar H Qazilbash
Hepatitis B core antibody (HBcAb) seropositivity has been associated with a higher rate of hepatitis B virus (HBV) reactivation after chemotherapy, even in patients who are hepatitis B surface antigen (HBsAg) negative. However, little is known about the risk of HBV reactivation after autologous hematopoietic stem cell transplantation (auto-HCT). We evaluated the incidence of HBV reactivation, liver toxicity and survival in patients with multiple myeloma (MM) who received auto-HCT at our institution. We retrospectively identified 107 MM patients with resolved HBV infection (HBcAb positive, HBsAg negative) and 125 patients with negative HBV serology (controls) who were matched for age, timing of auto-HCT from diagnosis, cytogenetics, disease status at transplant, induction therapy, and preparative regimen...
January 4, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28054586/hepatic-mir-291b-3p-mediated-glucose-metabolism-by-directly-targeting-p65-to-upregulate-pten-expression
#13
Jun Guo, Lin Dou, Xiangyu Meng, Zhenzhen Chen, Weili Yang, Weiwei Fang, Chunxiao Yang, Xiuqing Huang, Weiqing Tang, Jichun Yang, Jian Li
Several studies have suggested an important role of miR-291b-3p in the development of embryonic stem cells. In previous study, we found that the expression of miR-291b-3p was significantly upregulated in the liver of db/db mice. However, the role of miR-291b-3p in glucose metabolism and its underlying mechanisms remain unknown. In the present study, we demonstrated that miR-291b-3p was abundantly expressed in the liver. Of note, hepatic miR-291b-3p expression was upregulated in HFD-fed mice and induced by fasting in C57BL/6 J normal mice...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28053053/acute-on-chronic-liver-failure-an-update
#14
REVIEW
Ruben Hernaez, Elsa Solà, Richard Moreau, Pere Ginès
Acute-on-chronic liver failure (ACLF) is a syndrome characterised by acute decompensation of chronic liver disease associated with organ failures and high short-term mortality. Alcohol and chronic viral hepatitis are the most common underlying liver diseases. Up to 40%-50% of the cases of ACLF have no identifiable trigger; in the remaining patients, sepsis, active alcoholism and relapse of chronic viral hepatitis are the most common reported precipitating factors. An excessive systemic inflammatory response seems to play a crucial role in the development of ACLF...
January 4, 2017: Gut
https://www.readbyqxmd.com/read/28051995/in-vitro-modelling-of-familial-amyloidotic-polyneuropathy-allows-quantitative-detection-of-transthyretin-amyloid-fibril-like-structures-in-hepatic-derivatives-of-patient-specific-induced-pluripotent-stem-cells
#15
Jeannine Hoepfner, Mandy Kleinsorge, Oliver Papp, Susanne Alfken, Robin Heiringhoff, Andreas Pich, Vanessa Sauer, Andree Zibert, Gudrun Göhring, Hartmut Schmidt, Malte Sgodda, Tobias Cantz
The transthyretin protein is thermodynamically destabilised by mutations in the transthyretin gene, promoting the formation of amyloid fibrils in various tissues. Consequently, impaired autonomic organ function is observed in patients suffering from transthyretin-related Familial Amyloidotic Polyneuropathy (FAP). The influence of individual genetic backgrounds on fibril formation as a potential cause of genotype-phenotype variations needs to be investigated in order to ensure efficient patient-specific therapies...
January 4, 2017: Biological Chemistry
https://www.readbyqxmd.com/read/28050713/metabolic-profiling-of-human-long-term-liver-models-and-hepatic-clearance-predictions-from-in-vitro-data-using-nonlinear-mixed-effects-modeling
#16
Nicole A Kratochwil, Christophe Meille, Stephen Fowler, Florian Klammers, Aynur Ekiciler, Birgit Molitor, Sandrine Simon, Isabelle Walter, Claudia McGinnis, Johanna Walther, Brian Leonard, Miriam Triyatni, Hassan Javanbakht, Christoph Funk, Franz Schuler, Thierry Lavé, Neil J Parrott
Early prediction of human clearance is often challenging, in particular for the growing number of low-clearance compounds. Long-term in vitro models have been developed which enable sophisticated hepatic drug disposition studies and improved clearance predictions. Here, the cell line HepG2, iPSC-derived hepatocytes (iCell®), the hepatic stem cell line HepaRG™, and human hepatocyte co-cultures (HμREL™ and HepatoPac®) were compared to primary hepatocyte suspension cultures with respect to their key metabolic activities...
January 3, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28049229/tandem-high-dose-chemotherapy-and-autologous-stem-cell-transplantation-for-high-grade-gliomas-in-children-and-adolescents
#17
Ji Won Lee, Do Hoon Lim, Ki Woong Sung, Hyeong Jin Lee, Eun Sang Yi, Keon Hee Yoo, Hong Hoe Koo, Yeon Lim Suh, Hyung Jin Shin
With the aim to investigate the outcome of tandem high-dose chemotherapy and autologous stem cell transplantation (HDCT/auto-SCT) for high-grade gliomas (HGGs), we retrospectively reviewed the medical records of 30 patients with HGGs (16 glioblastomas, 7 anaplastic astrocytomas, and 7 other HGGs) between 2006 and 2015. Gross or near total resection was possible in 11 patients. Front-line treatment after surgery was radiotherapy (RT) in 14 patients and chemotherapy in the remaining 16 patients including 3 patients less than 3 years of age...
February 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28027590/hepatitis-b-reactivation-in-occult-viral-carriers-undergoing-hematopoietic-stem-cell-transplantation-a-prospective-study
#18
Wai-Kay Seto, Thomas Sau-Yan Chan, Yu-Yan Hwang, Danny Ka-Ho Wong, James Fung, Kevin Sze-Hang Liu, Harinder Gill, Yuk-Fai Lam, Eric H Y Lau, Ka-Shing Cheung, Albert K W Lie, Ching-Lung Lai, Yok-Lam Kwong, Man-Fung Yuen
Hepatitis B virus (HBV) reactivation in hepatitis B surface antigen (HBsAg)-negative, antibody to hepatitis B core antigen (anti-HBc) positive patients after allogeneic hematopoietic stem cell transplantation (HSCT) have not been prospectively studied. HBsAg-negative, anti-HBc positive patients with undetectable HBV DNA undergoing allogeneic HSCT were prospectively monitored every 4 weeks. The primary endpoint was HBV reactivation, defined as detectable HBV DNA (≥10 IU/mL). Secondary endpoints included overall survival, HBsAg-positivity, and changes in liver biochemistry and antibody to HBsAg levels...
December 27, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28026812/-the-hepatic-differentiation-of-adult-and-fetal-liver-stromal-cells-in-vitro
#19
I V Kholodenko, R V Kholodenko, G V Manukyan, K N Yarygin
The liver has a marked capacity for regeneration. In most cases the liver regeneration is determined by hepatocytes. The regenerative capacity of hepatocytes is significantly reduced in acute or chronic damage. In particular, repair mechanisms are not activated in patients with alcoholic cirrhosis. Organ transplantation or advanced methods of regenerative medicine can help such patients. The promising results were obtained in clinical trials involving patients with various forms of liver disease who received transplantation of autologous bone marrow stem cells...
November 2016: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/28025072/enhancing-biopharmaceutical-attributes-of-phospholipid-complex-loaded-nanostructured-lipidic-carriers-of-mangiferin-systematic-development-characterization-and-evaluation
#20
Rajneet Kaur Khurana, Arvind K Bansal, Sarwar Beg, Andrea Julie Burrow, O P Katare, Kamalinder K Singh, Bhupinder Singh
Mangiferin (Mgf), largely expressed out from the leaves and stem bark of Mango, is a potent antioxidant. However, its in vivo activity gets tremendously reduced owing to poor aqueous solubility and inconsistent gastrointestinal absorption, high hepatic first-pass metabolism and high P-gp efflux. The current research work, therefore, was undertaken to overcome the biopharmaceutical hiccups by developing the Mgf-phospholipid complex (PLCs) loaded in nanostructured lipidic carriers (NLCs). The PLCs and NLCs were prepared using refluxing, solvent evaporation and hot emulsification technique, respectively with three molar ratios of Mgf and Phospholipon 90G, i...
December 23, 2016: International Journal of Pharmaceutics
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