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https://www.readbyqxmd.com/read/29645296/effects-of-jak1-2-inhibition-on-bone-marrow-stromal-cells-of-myeloproliferative-neoplasm-mpn-patients-and-healthy-individuals
#1
Dimitra Zacharaki, Roshanak Ghazanfari, Hongzhe Li, Hooi Ching Lim, Stefan Scheding
OBJECTIVE: Philadelphia-negative myeloproliferative neoplasms (MPNs) commonly share hyperactive JAK-STAT signaling affecting hematopoietic stem cells (HSC) and their progeny. The JAK1/2 inhibitor Ruxolitinib has remarkable clinical efficacy, including spleen reduction, improvement of constitutional symptoms, and bone marrow (BM) fibrosis reversal. Whether this is due to inhibition of JAK2-mutated HSC only, or whether Ruxolitinib also affects BM stroma is not known. METHODS: This study investigated potential effects of Ruxolitinib on BM mesenchymal stromal cells (MSC), which are not only major regulators of hematopoiesis but also contribute to fibrosis, from 10 healthy donors and 7 JAK2V617F -positive MPN patients...
April 12, 2018: European Journal of Haematology
https://www.readbyqxmd.com/read/29625439/mesenchymal-stromal-cells-inhibit-neutrophil-effector-functions-in-a-murine-model-of-ocular-inflammation
#2
Sharad K Mittal, Alireza Mashaghi, Afsaneh Amouzegar, Mingshun Li, William Foulsham, Srikant K Sahu, Sunil K Chauhan
Purpose: Neutrophil-secreted effector molecules are one of the primary causes of tissue damage during corneal inflammation. In the present study, we have investigated the effect of stromal cells in regulating neutrophil expression of tissue-damaging enzymes, myeloperoxidase (MPO), and N-elastase (ELANE). Methods: Bone marrow-purified nonhematopoietic mesenchymal stromal cells and formyl-methionyl-leucyl-phenylalanine-activated neutrophils were cocultured in the presence or absence of Transwell inserts for 1 hour...
March 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29617878/role-of-tgf%C3%AE-signaling-in-maternal-ethanol-induced-fetal-articular-cartilage-dysplasia-and-adult-onset-of-osteoarthritis-in-male-rats
#3
Qubo Ni, Kaihang Lu, Jing Li, Yang Tan, Jun Qin, Jacques Magdalou, Liaobin Chen, Hui Wang
Background: Based on our previous findings that prenatal ethanol exposure in offspring increased susceptibility to adult osteoarthritis (OA), this study aimed to further investigate the direct toxicity of ethanol on fetal articular cartilage development. Methods: Rat bone marrow-derived stroma cells (BMSCs) were capsulated in alginate beads, incubated in a chondrogenic differentiation medium, and cultured for 4 weeks with ethanol treatment at concentrations of 0, 4, 20, and 100 mM...
March 29, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29610857/mast-cells-initiate-the-recruitment-of-neutrophils-following-ocular-surface-injury
#4
Srikant K Sahu, Sharad K Mittal, William Foulsham, Mingshun Li, Virender S Sangwan, Sunil K Chauhan
Purpose: The purpose of this study was to investigate the contribution of mast cells to early neutrophil recruitment during ocular inflammation. Methods: In a murine model of corneal injury, the epithelium and anterior stroma were removed using a handheld motor brush. Cromolyn sodium (2% in PBS) eye drops were administered topically for mast cell inhibition. In vitro, bone marrow-derived mast cells were cultured alone or with corneal tissue. The frequencies of CD45+ inflammatory cells, CD11b+Ly6G+ neutrophils, and ckit+FcεR1+ mast cells in the cornea were assessed by flow cytometry...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29580262/treatment-of-b-cell-precursor-acute-lymphoblastic-leukemia-with-the-galectin-1-inhibitor-ptx008
#5
Helicia Paz, Eun Ji Joo, Chih-Hsing Chou, Fei Fei, Kevin H Mayo, Hisham Abdel-Azim, Haike Ghazarian, John Groffen, Nora Heisterkamp
BACKGROUND: Drug resistance of B-cell precursor acute lymphoblastic leukemia (BP-ALL) cells is conferred by both intrinsic and extrinsic factors, which could be targeted to promote chemo-sensitization. Our previous studies showed that Galectin-3, a lectin that clusters galactose-modified glycoproteins and that has both an intracellular and extracellular location, protects different subtypes of BP-ALL cells against chemotherapy. Galectin-1 is related to Galectin-3 and its expression was previously reported to be restricted to the MLL subtype of BP-ALL...
March 27, 2018: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/29576341/fertility-rescue-and-ovarian-follicle-growth-promotion-by-bone-marrow-stem-cell-infusion
#6
Sonia Herraiz, Anna Buigues, César Díaz-García, Mónica Romeu, Susana Martínez, Inés Gómez-Seguí, Carlos Simón, Aaron J Hsueh, Antonio Pellicer
OBJECTIVE: To assess if infusion of human bone marrow-derived stem cells (BMDSCs) could promote follicle development in patients with impaired ovarian functions. DESIGN: Experimental design. SETTING: University research laboratories. ANIMAL(S): Immunodeficient NOD/SCID female mice. INTERVENTION(S): Human BMDSCs were injected into mice with chemotherapy-induced ovarian damage and into immunodeficient mice xenografted with human cortex from poor-responder patients (PRs)...
March 22, 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29546035/gametocytes-of-the-malaria-parasite-plasmodium-falciparum-interact-with-and-stimulate-bone-marrow-mesenchymal-cells-to-secrete-angiogenetic-factors
#7
Valeria Messina, Mauro Valtieri, Mercedes Rubio, Mario Falchi, Francesca Mancini, Alfredo Mayor, Pietro Alano, Francesco Silvestrini
The gametocytes of Plasmodium falciparum , responsible for the transmission of this malaria parasite from humans to mosquitoes, accumulate and mature preferentially in the human bone marrow. In the 10 day long sexual development of P. falciparum , the immature gametocytes reach and localize in the extravascular compartment of this organ, in contact with several bone marrow stroma cell types, prior to traversing the endothelial lining and re-entering in circulation at maturity. To investigate the host parasite interplay underlying this still obscure process, we developed an in vitro tridimensional co-culture system in a Matrigel scaffold with P...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29535427/mesenchymal-stem-cells-in-multiple-myeloma-a-therapeutical-tool-or-target
#8
REVIEW
Song Xu, Kim De Veirman, Ann De Becker, Karin Vanderkerken, Ivan Van Riet
Multiple myeloma (MM) is a malignant plasma cell (PC) disorder, characterized by a complex interactive network of tumour cells and the bone marrow (BM) stromal microenvironment, contributing to MM cell survival, proliferation and chemoresistance. Mesenchymal stem cells (MSCs) represent the predominant stem cell population of the bone marrow stroma, capable of differentiating into multiple cell lineages, including fibroblasts, adipocytes, chondrocytes and osteoblasts. MSCs can migrate towards primary tumours and metastatic sites, implying that these cells might modulate tumour growth and metastasis...
February 22, 2018: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29521075/the-importance-of-antiangiogenic-effect-in-multiple-myeloma-treatment
#9
REVIEW
Agnieszka Barchnicka, Małgorzata Olejniczak-Nowakowska, Karolina Krupa-Kotara, Sebastian Grosicki
Angiogenesis plays a significant role in oncogenesis, and thus it has become an attractive target for cancer treatment. It is the formation of new blood vessels that occurs physiologically as well as under pathological conditions, and may influence cancer proliferation and survival. The current therapeutic approach in oncology includes conventional chemotherapy in combination with biologically-based treatment in various perspectives, targeting not only the malignant cells, but also its microenvironment. Target treatment might be less toxic than conventional chemotherapy...
February 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29520270/a-novel-role-for-c5a-in-b-1-cell-homeostasis
#10
Katharina Bröker, Julia Figge, Albert F Magnusen, Rudolf A Manz, Jörg Köhl, Christian M Karsten
B-1 cells constitute a unique subpopulation of lymphocytes residing mainly in body cavities like the peritoneal cavity (PerC) but are also found in spleen and bone marrow (BM). As innate-like B cells, they mediate first line immune defense through low-affinity natural IgM (nIgM) antibodies. PerC B-1 cells can egress to the spleen and differentiate into nIgM antibody-secreting plasma cells that recognize conserved exogenous and endogenous cellular structures. Homing to and homeostasis within the PerC are regulated by the chemokine CXCL13 released by PerC macrophages and stroma cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29517849/bone-marrow-derived-mesenchymal-stem-cells-promote-invasiveness-and-transendothelial-migration-of-osteosarcoma-cells-via-a-mesenchymal-to-amoeboid-transition
#11
Laura Pietrovito, Angela Leo, Valentina Gori, Matteo Lulli, Matteo Parri, Valentina Becherucci, Luisa Piccini, Franco Bambi, Maria Letizia Taddei, Paola Chiarugi
There is growing evidence to suggest that bone marrow-derived mesenchymal stem cells (BM-MSCs) are key players in tumor stroma. Here, we investigated the cross-talk between BM-MSCs and osteosarcoma (OS) cells. We revealed a strong tropism of BM-MSCs towards these tumor cells, and identified MCP-1, GRO-α and TGF-β1 as pivotal factors for BM-MSC chemotaxis. Once in contact with OS cells, BM-MSCs transdifferentiate into cancer-associated fibroblasts, further increasing MCP-1, GRO-α, IL-6 and IL-8 levels in the tumor microenvironment...
March 8, 2018: Molecular Oncology
https://www.readbyqxmd.com/read/29516916/the-effect-of-mesenchymal-stem-cell-conditioned-medium-on-proliferation-and-apoptosis-of-breast-cancer-cell-line
#12
Leila Farahmand, Rezvan Esmaeili, Leila Eini, Keivan Majidzadeh-A
Purpose: Bone marrow-derived mesenchymal stem cells (MSCs) have the potential ability to differentiate into bone, muscle, fat, and cartilage lineage cells. Furthermore, MSCs are known to migrate into tumor-associated stroma of cancer. This tumor microenvironment consists of a dynamic network of growth factors, immune cells, fibroblasts, extracellular matrix, and MSCs. MSCs as nonhematopoietic stem cells affect tumor, epithelial cells by alteration proliferative capacity, morphology, and aggregation pattern of tumor cells...
January 2018: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29515075/-mesenchymal-stem-cell-therapy-in-hematopoietic-stem-cell-transplantation
#13
Tatsunori Goto, Makoto Murata
Mesenchymal stem cells (MSCs) have received considerable attention in allogeneic hematopoietic cell transplantation because of their abilities to modulate immune responses and promote hematopoiesis. Because MSCs are capable of producing several cytokines and growth factors, they have been widely used in the treatment of graft-versus-host disease (GVHD). A number of clinical trials have demonstrated the safety and efficacy of MSC therapy for acute GVHD. Moreover, in Japan, allogeneic bone marrow-derived MSC product, TEMCELL® , was approved as a regenerative medicine for acute GVHD...
2018: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/29507631/selection-of-tissue-factor-deficient-cell-transplants-as-a-novel-strategy-for-improving-hemocompatibility-of-human-bone-marrow-stromal-cells
#14
Michaela Oeller, Sandra Laner-Plamberger, Sarah Hochmann, Nina Ketterl, Martina Feichtner, Gabriele Brachtl, Anna Hochreiter, Cornelia Scharler, Lara Bieler, Pasquale Romanelli, Sebastien Couillard-Despres, Elisabeth Russe, Katharina Schallmoser, Dirk Strunk
Intravascular transplantation of tissue factor (TF)-bearing cells elicits an instant blood-mediated inflammatory reaction (IBMIR) resulting in thrombotic complications and reduced engraftment. Here we studied the hemocompatibility of commonly used human white adipose tissue (WAT), umbilical cord (UC) and bone marrow stromal cells (BMSC) and devised a possible strategy for safe and efficient stromal cell transplantation. Methods: Stromal cell identity, purity, and TF expression was tested by RTQ-PCR, flow cytometry and immunohistochemistry...
2018: Theranostics
https://www.readbyqxmd.com/read/29487418/hif1%C3%AE-drives-chemokine-factor-pro-tumoral-signaling-pathways-in-acute-myeloid-leukemia
#15
Amina M Abdul-Aziz, Manar S Shafat, Yu Sun, Christopher R Marlein, Rachel E Piddock, Stephen D Robinson, Dylan R Edwards, Zhigang Zhou, Angela Collins, Kristian M Bowles, Stuart A Rushworth
Approximately 80% of patients diagnosed with acute myeloid leukemia (AML) die as a consequence of failure to eradicate the tumor from the bone marrow microenvironment. We have recently shown that stroma-derived interleukin-8 (IL-8) promotes AML growth and survival in the bone marrow in response to AML-derived macrophage migration inhibitory factor (MIF). In the present study we show that high constitutive expression of MIF in AML blasts in the bone marrow is hypoxia-driven and, through knockdown of MIF, HIF1α and HIF2α, establish that hypoxia supports AML tumor proliferation through HIF1α signaling...
February 28, 2018: Oncogene
https://www.readbyqxmd.com/read/29487069/the-interplay-of-leukemia-cells-and-the-bone-marrow-microenvironment
#16
REVIEW
Delfim Duarte, Edwin D Hawkins, Cristina Lo Celso
The interplay of cancer cells and surrounding stroma is critical in disease progression. This is particularly evident in hematological malignancies that infiltrate the bone marrow and peripheral lymphoid organs. Despite clear evidence for the existence of these interactions, the precise repercussions on the growth of leukemic cells are poorly understood. Recent development of novel imaging technology and preclinical disease models has advanced our comprehension of leukemia-microenvironment crosstalk and has potential implications for development of novel treatment options...
April 5, 2018: Blood
https://www.readbyqxmd.com/read/29481786/fibrocyte-migration-differentiation-and-apoptosis-during-the-corneal-wound-healing-response-to-injury
#17
Luciana Lassance, Gustavo K Marino, Carla S Medeiros, Shanmugapriya Thangavadivel, Steven E Wilson
The aim of this study was to determine whether bone marrow-derived fibrocytes migrate into the cornea after stromal scar-producing injury and differentiate into alpha-smooth muscle actin (αSMA) + myofibroblasts. Chimeric mice expressing green fluorescent protein (GFP) bone marrow cells had fibrosis (haze)-generating irregular phototherapeutic keratectomy (PTK). Multiplex immunohistochemistry (IHC) for GFP and fibrocyte markers (CD34, CD45, and vimentin) was used to detect fibrocyte infiltration into the corneal stroma and the development of GFP+ αSMA + myofibroblasts...
February 23, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29463593/interleukin-33-signaling-restrains-sporadic-colon-cancer-in-an-interferon-gamma-dependent-manner
#18
Moritz F Eissmann, Christine Dijkstra, Merridee A Wouters, David Baloyan, Dmitri Mouradov, Paul M Nguyen, Mercedes Davalos-Salas, Tracy L Putoczki, Oliver M Sieber, John M Mariadason, Matthias Ernst, Frederick Masson
Interleukin 33 (IL33) is an inflammatory cytokine released during necrotic cell death. The epithelium and stroma of the intestine express large amounts of IL33 and its receptor St2. IL33 is therefore continuously released during homeostatic turnover of the intestinal mucosa. Although IL33 can prevent colon cancer associated with inflammatory colitis, the contribution of IL33 signaling to sporadic colon cancer remains unknown. Here, we utilized a mouse model of sporadic colon cancer to investigate the contribution of IL33 signaling to tumorigenesis in the absence of pre-existing inflammation...
February 20, 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29453226/modeling-the-human-bone-marrow-niche-in-mice-from-host-bone-marrow-engraftment-to-bioengineering-approaches
#19
REVIEW
Ander Abarrategi, Syed A Mian, Diana Passaro, Kevin Rouault-Pierre, William Grey, Dominique Bonnet
Xenotransplantation of patient-derived samples in mouse models has been instrumental in depicting the role of hematopoietic stem and progenitor cells in the establishment as well as progression of hematological malignancies. The foundations for this field of research have been based on the development of immunodeficient mouse models, which provide normal and malignant human hematopoietic cells with a supportive microenvironment. Immunosuppressed and genetically modified mice expressing human growth factors were key milestones in patient-derived xenograft (PDX) models, highlighting the importance of developing humanized microenvironments...
February 16, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29377497/reduced-cell-division-control-protein-42-activity-compromises-hematopoiesis-supportive-function-of-fanconi-anemia-mesenchymal-stromal-cells
#20
Jian Xu, Xue Li, Allison Cole, Zachary Sherman, Wei Du
Hematopoietic stem cells preserve their ability to self-renew and differentiate to different lineages in the bone marrow (BM) niche, which is composed in large part by BM stromal cells. Studies have shown that altered signaling in the BM niche results in leukemia initiation or progression. Fanconi anemia (FA) is an inherited BM failure syndrome associated with extremely high risk of leukemic transformation. By using two FA mouse models, here we have investigated the hematopoiesis-supportive function of FA BM mesenchymal stroma cells (MSCs)...
January 27, 2018: Stem Cells
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