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https://www.readbyqxmd.com/read/29127315/human-gingiva-derived-mesenchymal-stem-cells-ameliorate-streptozoticin-induced-t1dm-in-mice-via-suppression-of-t-effector-cells-and-up-regulating-treg-subsets
#1
Wei Zhang, Li Zhou, Junlong Dang, Ximei Zhang, Julie Wang, Yanming Chen, Jichao Liang, Dongqing Li, Jilin Ma, Jia Yuan, Weiwen Chen, Homayoun H Zadeh, Nancy Olsen, Song Guo Zheng
There is yet no cure for type 1 diabetes (T1DM) so far. A significant body of evidence has demonstrated that bone marrow-derived mesenchymal stem cells (BMSCs) showed great potential in controlling T1DM. But there exists much difficulty in using BMSCs as a clinical therapy. We here test whether a new population of mesenchymal stem cells from human gingiva (GMSCs), which has many advantages over BMSCs, can delay or prevent progress of T1DM. GMSCs were adoptively transferred to multiple low-dose streptozotocin (STZ)-induced T1DM...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29106735/human-periodontal-ligament-fibroblasts-synthesize-c-reactive-protein-and-th-related-cytokines-in-response-to-interleukin-il-6-trans-signaling
#2
A Hernández-Caldera, R Vernal, R Paredes, P Veloso-Matta, J Astorga, M Hernández
AIM: To characterize the potential of human periodontal ligament fibroblasts (HPLF) to synthesize CRP and Th-related cytokines in response to IL-6 in periodontal health and apical inflammation. METHODOLOGY: Primary HPLF stimulated with IL-6, soluble(s) IL-6 receptor (R) and controls were assayed for CRP, Th1, Th2, Th17 and Treg-related cytokines by quantitative real time PCR and ELISA, respectively. IL-6R mRNA expression and its soluble protein levels were screened in HPLF cultures, and ex vivo samples of healthy periodontal ligaments (n=5) and apical lesions (n=13)...
November 6, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28881756/mm-bmscs-induce-na%C3%A3-ve-cd4-t-lymphocytes-dysfunction-through-fibroblast-activation-protein-%C3%AE
#3
Xiaofei Wu, Yadan Wang, Jian Xu, Ting Luo, Jun Deng, Yu Hu
BACKGROUND: The tumor microenvironment plays a major role in multiple myelomas (MM). MM-BMSCs (bone marrow mesenchymal stromal cells) can support tumor growth and immune surveillance escape. On the other hand, fibroblast activation protein α, expressed by cancer stroma cells including BMSCs, has been shown to potentiate epithelial cancers growth and immune suppression. RESULTS: MM-BMSC inhibited proliferation of T cells (P = 0.0138), promoted senescence of T cells (P < 0...
August 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28833065/mesenteric-lymph-node-stromal-cell-derived-extracellular-vesicles-contribute-to-peripheral-de-novo-induction-of-foxp3-regulatory-t-cells
#4
Maria Pasztoi, Joern Pezoldt, Michael Beckstette, Christoph Lipps, Dagmar Wirth, Manfred Rohde, Krisztina Paloczi, Edit Iren Buzas, Jochen Huehn
Intestinal regulatory T cells (Tregs) are fundamental in peripheral tolerance towards commensals and food-borne antigens. Accordingly, gut-draining mesenteric lymph nodes (mLNs) represent a site of efficient peripheral de novo Treg induction when compared to skin-draining peripheral LNs (pLNs), and we had recently shown that LN stromal cells substantially contribute to this process. Here, we aimed to unravel the underlying molecular mechanisms and generated immortalized fibroblastic reticular cell lines (iFRCs) from mLNs and pLNs, allowing unlimited investigation of this rare stromal cell subset...
August 18, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28795730/role-of-garp-in-the-activation-of-latent-tgf-%C3%AE-1
#5
REVIEW
Julie Stockis, Olivier Dedobbeleer, Sophie Lucas
TGF-β1, 2 and 3 cytokines are involved in many cellular processes including cell proliferation, differentiation, migration and survival. Whereas TGF-β2 and 3 play important roles in embryonic development, TGF-β1 is mostly implicated in controlling immune responses after birth. The production of TGF-β1 is a tightly regulated process, occurring mostly at a post-translational level. Virtually all cells produce the latent, inactive form of TGF-β1. In latent TGF-β1, the mature TGF-β1 dimer is non-covalently associated to the Latency Associated Peptide, or LAP, which prevents binding to the TGF-β1 receptor...
September 26, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28758901/stromal-cell-cadherin-11-regulates-adipose-tissue-inflammation-and-diabetes
#6
Sook Kyung Chang, Ayano C Kohlgruber, Fumitaka Mizoguchi, Xavier Michelet, Benjamin J Wolf, Kevin Wei, Pui Y Lee, Lydia Lynch, Danielle Duquette, Victòria Ceperuelo-Mallafré, Alexander S Banks, Michael B Brenner
M2 macrophages, innate lymphoid type 2 cells (ILC2s), eosinophils, Tregs, and invariant NK T cells (iNKT cells) all help to control adipose tissue inflammation, while M1 macrophages, TNF, and other inflammatory cytokines drive inflammation and insulin resistance in obesity. Stromal cells regulate leukocyte responses in lymph nodes, but the role of stromal cells in adipose tissue inflammation is unknown. PDGFRα+ stromal cells are major producers of IL-33 in adipose tissue. Here, we show that mesenchymal cadherin-11 modulates stromal fibroblast function...
September 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28687373/il-33-and-the-intestine-the-good-the-bad-and-the-inflammatory
#7
REVIEW
Zerina Hodzic, Ellen Merrick Schill, Alexa M Bolock, Misty Good
Interleukin-33 (IL-33) is a member of the IL-1 cytokine family that has been widely studied since its discovery in 2005 for its dichotomous functions in homeostasis and inflammation. IL-33, along with its receptor suppression of tumorigenicity 2 (ST2), has been shown to modulate both the innate and adaptive immune system. Originally, the IL-33/ST2 signaling axis was studied in the context of inducing type 2 immune responses with the expression of ST2 by T helper 2 (TH2) cells. However, the role of IL-33 is not limited to TH2 responses...
December 2017: Cytokine
https://www.readbyqxmd.com/read/28673339/human-limbal-fibroblast-like-stem-cells-induce-immune-tolerance-in-autoreactive-t-lymphocytes-from-female-patients-with-hashimoto-s-thyroiditis
#8
Antonina Coppola, Laura Tomasello, Maria Pitrone, Salvatore Cillino, Pierina Richiusa, Giuseppe Pizzolanti, Carla Giordano
BACKGROUND: Due to their "natural immune privilege" and immunoregulatory properties human fibroblast-like limbal stem cells (f-LSCs) have acquired great interest as a potential tool for achieving immunotolerance. Hashimoto's thyroiditis (HT) is the most common thyroid autoimmune disease and cause of hypothyroidism. To date, conventional hormone replacement therapy and unspecific immunosuppressive regimens cannot provide a definitive cure for HT subjects. We explored the immunosuppressant potential of human f-LSCs on circulating lymphomonocytes (PBMCs) collected from healthy donors and female HT patients...
July 3, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28667560/cardiac-autoimmunity-myocarditis
#9
REVIEW
William Bracamonte-Baran, Daniela Čiháková
Myocarditis is the inflammation of the muscle tissues of the heart (myocardium). After a pathologic cardiac-specific inflammatory process, it may progress to chronic damage and dilated cardiomyopathy. The latter is characterized by systolic dysfunction, whose clinical correlate is heart failure. Nevertheless, other acute complications may arise as consequence of tissue damage and electrophysiologic disturbances. Different etiologies are involved in triggering myocarditis. In some cases, such as giant cell myocarditis or eosinophilic necrotizing myocarditis, it is an autoimmune process...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28528914/systemic-sclerosis-dermal-fibroblasts-suppress-th1-cytokine-production-via-galectin-9-overproduction-due-to-fli1-deficiency
#10
COMPARATIVE STUDY
Ryosuke Saigusa, Yoshihide Asano, Kouki Nakamura, Megumi Hirabayashi, Shunsuke Miura, Takashi Yamashita, Takashi Taniguchi, Yohei Ichimura, Takehiro Takahashi, Ayumi Yoshizaki, Tomomitsu Miyagaki, Makoto Sugaya, Shinichi Sato
Dermal fibroblasts promote skin-localized transdifferentiation of regulatory T cells to T helper (Th) type 2-like cells in systemic sclerosis (SSc). However, the entire effect of SSc dermal fibroblasts on immune cells still remains unknown. Because galectin-9 induces Th2 cytokine-predominant immune imbalance by negatively regulating Th1/Th17 cells in inflammatory diseases, we investigated the contribution of galectin-9 to Th immune balance in SSc lesional skin. We used human clinical samples and Fli1(+/-) mice because Fli1 deficiency induces SSc-like phenotypes in various cell types...
September 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28514770/mm-bmscs-induce-na%C3%A3-ve-cd4-t-lymphocytes-dysfunction-through-fibroblast-activation-protein-%C3%AE
#11
Xiaofei Wu, Yadan Wang, Jian Xu, Ting Luo, Jun Deng, Yu Hu
BACKGROUND: The tumor microenvironment plays a major role in multiple myelomas (MM). MM-BMSCs (bone marrow mesenchymal stromal cells) can support tumor growth and immune surveillance escape. On the other hand, fibroblast activation protein α, expressed by cancer stroma cells including BMSCs, has been shown to potentiate epithelial cancers growth and immune suppression. RESULTS: MM-BMSC inhibited proliferation of T cells (P = 0.0138), promoted senescence of T cells (P < 0...
April 30, 2017: Oncotarget
https://www.readbyqxmd.com/read/28441391/apigenin-inhibits-tnf%C3%AE-il-1%C3%AE-induced-ccl2-release-through-ikbk-epsilon-signaling-in-mda-mb-231-human-breast-cancer-cells
#12
David Bauer, Natalie Redmon, Elizabeth Mazzio, Karam F Soliman
Mortality associated with breast cancer is attributable to aggressive metastasis, to which TNFα plays a central orchestrating role. TNFα acts on breast tumor TNF receptors evoking the release of chemotactic proteins (e.g. MCP-1/CCL2). These proteins direct inward infiltration/migration of tumor-associated macrophages (TAMs), tumor-associated neutrophils (TANs), myeloid-derived suppressor cells (MDSCs), T-regulatory cells (Tregs), T helper IL-17-producing cells (Th17s), metastasis-associated macrophages (MAMs) and cancer-associated fibroblasts (CAFs)...
2017: PloS One
https://www.readbyqxmd.com/read/28259699/chicken-il-26-regulates-immune-responses-through-the-jak-stat-and-nf-%C3%AE%C2%BAb-signaling-pathways
#13
Anh Duc Truong, Yeojin Hong, Cong Thanh Hoang, Janggeun Lee, Yeong Ho Hong
Chicken interleukin 26 (ChIL-26), a member of the IL-10 family, is expressed in T cells and can induce expression of proinflammatory cytokines. We examined the response of signal transduction pathways to ChIL-26 stimulation in the chicken T (CU91), macrophage (HD11), and fibroblast (OU2) cell lines. ChIL-26 activated JAK2 and TYK2 phosphorylation, as well as activation of STAT1, STAT3, and SHP2 via tyrosine/serine residues. We also showed that ChIL-26 activates the phosphorylation of NF-κB1, TAK1, and MyD88 kinase, which are key regulators of NF-κB signaling pathways...
March 2, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28165342/epicardial-yap-taz-orchestrate-an-immunosuppressive-response-following-myocardial-infarction
#14
Vimal Ramjee, Deqiang Li, Lauren J Manderfield, Feiyan Liu, Kurt A Engleka, Haig Aghajanian, Christopher B Rodell, Wen Lu, Vivienne Ho, Tao Wang, Li Li, Anamika Singh, Dasan M Cibi, Jason A Burdick, Manvendra K Singh, Rajan Jain, Jonathan A Epstein
Ischemic heart disease resulting from myocardial infarction (MI) is the most prevalent form of heart disease in the United States. Post-MI cardiac remodeling is a multifaceted process that includes activation of fibroblasts and a complex immune response. T-regulatory cells (Tregs), a subset of CD4+ T cells, have been shown to suppress the innate and adaptive immune response and limit deleterious remodeling following myocardial injury. However, the mechanisms by which injured myocardium recruits suppressive immune cells remain largely unknown...
March 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28130401/distinctive-histogenesis-and-immunological-microenvironment-based-on-transcriptional-profiles-of-follicular-dendritic-cell-sarcomas
#15
Maria Antonella Laginestra, Claudio Tripodo, Claudio Agostinelli, Giovanna Motta, Sylvia Hartmann, Claudia Doring, Maura Rossi, Federica Melle, Maria Rosaria Sapienza, Valentina Tabanelli, Alessandro Pileri, Fabio Fuligni, Anna Gazzola, Claudia Mannu, Carlo Alberto Sagramoso, Silvia Lonardi, Luisa Lorenzi, Francesco Bacci, Elena Sabattini, Anita Borges, Ingrid Simonitsch-Klupp, Jose Cabecadas, Elias Campo, Juan Rosai, Martin-Leo Hansmann, Fabio Facchetti, Stefano Aldo Pileri
Follicular dendritic cell (FDC) sarcomas are rare mesenchymal tumors (MTs) with variable clinical, morphologic and phenotypic characteristics. Transcriptome analysis was performed on multiple FDC sarcomas and compared to other MTs, microdissected Castleman FDCs, and normal fibroblasts. Using unsupervised analysis, FDC sarcomas clustered with microdissected FDCs, distinct from other MTs and fibroblasts. The specific endowment of FDC-related gene expression programs in FDC sarcomas emerged by applying a gene signature of differentially expressed genes (n=1,289) between microdissected FDCs and fibroblasts...
January 27, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28117653/innate-immune-cytokines-fibroblast-phenotypes-and-regulation-of-extracellular-matrix-in-lung
#16
Carl D Richards
Chronic inflammation can be caused by adaptive immune responses in autoimmune and allergic conditions, driven by a T lymphocyte subset balance (TH1, TH2, Th17, Th22, and/or Treg) and skewed cellular profiles in an antigen-specific manner. However, several chronic inflammatory diseases have no clearly defined adaptive immune mechanisms that drive chronicity. These conditions include those that affect the lung such as nonatopic asthma or idiopathic pulmonary fibrosis comprising significant health problems. The remodeling of extracellular matrix (ECM) causes organ dysfunction, and it is largely generated by fibroblasts as the major cell controlling net ECM...
February 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/28004985/cyclophosphamide-enhances-anti-tumor-effects-of-a-fibroblast-activation-protein-%C3%AE-based-dna-vaccine-in-tumor-bearing-mice-with-murine-breast-carcinoma
#17
Qiu Xia, Fei Geng, Fang-Fang Zhang, Chen-Lu Liu, Ping Xu, Zhen-Zhen Lu, Yu Xie, Bo Sun, Hui Wu, Bin Yu, Wei Kong, Xiang-Hui Yu, Hai-Hong Zhang
Cyclophosphamide (CY) is a DNA alkylating agent, which is widely used with other chemotherapy drugs in the treatment of various types of cancer. It can be used not only as a chemotherapeutic but also as an immunomodulatory agent to inhibit IL-10 expression and T regulatory cells (Tregs). Fibroblast activation protein α (FAPα) is expressed in cancer-associated fibroblasts in the tumor microenvironment. Immunotherapy based on FAPα, as a tumor stromal antigen, typically induces specific immune response targeting the tumor microenvironment...
February 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/27895816/clinical-impact-of-chemotherapy-to-improve-tumor-microenvironment-of-pancreatic-cancer
#18
REVIEW
Takahiro Tsuchikawa, Shintaro Takeuchi, Toru Nakamura, Toshiaki Shichinohe, Satoshi Hirano
A perioperative multimodal strategy including combination chemotherapy and radiotherapy, in addition to surgical resection, has been acknowledged to improve patient prognosis. However chemotherapy has not been actively applied as an immunomodulating modality because of concerns about various immunosuppressive effects. It has recently been shown that certain chemotherapeutic agents could modify tumor microenvironment and host immune responses through several underlying mechanisms such as immunogenic cell death, local T-cell infiltration and also the eradication of immune-suppressing regulatory cells such as regulatory T cells (Tregs) and myeloid-derived suppressor cells...
November 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27863995/tumor-targeted-delivery-of-sunitinib-base-enhances-vaccine-therapy-for-advanced-melanoma-by-remodeling-the-tumor-microenvironment
#19
Meirong Huo, Yan Zhao, Andrew Benson Satterlee, Yuhua Wang, Ying Xu, Leaf Huang
Development of an effective treatment against advanced tumors remains a major challenge for cancer immunotherapy. We have previously developed a potent mannose-modified lipid calcium phosphate (LCP) nanoparticle (NP)-based Trp2 vaccine for melanoma therapy, but because this vaccine can induce a potent anti-tumor immune response only during the early stages of melanoma, poor tumor growth inhibition has been observed in more advanced melanoma models, likely due to the development of an immune-suppressive tumor microenvironment (TME)...
January 10, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27659014/stromal-ets2-regulates-chemokine-production-and-immune-cell-recruitment-during-acinar-to-ductal-metaplasia
#20
Jason R Pitarresi, Xin Liu, Sudarshana M Sharma, Maria C Cuitiño, Raleigh D Kladney, Thomas A Mace, Sydney Donohue, Sunayana G Nayak, Chunjing Qu, James Lee, Sarah A Woelke, Stefan Trela, Kyle LaPak, Lianbo Yu, Joseph McElroy, Thomas J Rosol, Reena Shakya, Thomas Ludwig, Gregory B Lesinski, Soledad A Fernandez, Stephen F Konieczny, Gustavo Leone, Jinghai Wu, Michael C Ostrowski
Preclinical studies have suggested that the pancreatic tumor microenvironment both inhibits and promotes tumor development and growth. Here we establish the role of stromal fibroblasts during acinar-to-ductal metaplasia (ADM), an initiating event in pancreatic cancer formation. The transcription factor V-Ets avian erythroblastosis virus E26 oncogene homolog 2 (ETS2) was elevated in smooth muscle actin-positive fibroblasts in the stroma of pancreatic ductal adenocarcinoma (PDAC) patient tissue samples relative to normal pancreatic controls...
September 2016: Neoplasia: An International Journal for Oncology Research
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