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https://www.readbyqxmd.com/read/28109025/immune-regulation-by-t-regulatory-cells-in-hbv-related-inflammation-and-cancer
#1
REVIEW
Nirupama Trehanpati, Ashish Kumar Vyas
Hepatocellular carcinoma (HCC) is the leading cause of cancer death and hepatitis B virus (HBV) infection is one of the commonest causes in Asians countries. India has the second largest pool after China for hepatitis B infected subjects. HBV clearance is T cell dependent and one of the reason for T cells hypo responsiveness is due to mass production of Tregs through activation of Notch signaling, which suppressCD4/CD8 T cells. Regulatory T cells (Tregs) are important to maintain cellular homeostasis; however during viral infection increase of Tregs is inversely proportional to HBV DNA titers...
January 21, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28108746/myeloid-derived-suppressor-cells-can-be-efficiently-generated-from-human-hematopoietic-progenitors-and-peripheral-blood-monocytes
#2
Sílvia Casacuberta-Serra, Marta Parés, Arantxa Golbano, Elisabet Coves, Carmen Espejo, Jordi Barquinero
Myeloid-derived suppressor cells (MDSCs) play an important role in controlling inflammation. As such, they are both a therapeutic target and, based on the administration of ex-vivo-generated MDSCs, a therapeutic tool. However, there are relatively few reports describing methods to generate human MDSCs, and most of them rely on cells obtained from peripheral blood monocytes. We investigated alternative approaches to the generation of MDSCs from hematopoietic progenitors and monocytes. Purified CD34(+) hematopoietic progenitors from apheresis products and CD14(+) cells isolated from buffy coats were cultured in the presence of different combinations of cytokines...
January 21, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28108486/regulation-of-the-immune-response-by-tgf-%C3%AE-from-conception-to-autoimmunity-and-infection
#3
Shomyseh Sanjabi, Soyoung A Oh, Ming O Li
Transforming growth factor β (TGF-β) is a pleiotropic cytokine involved in both suppressive and inflammatory immune responses. After 30 years of intense study, we have only begun to elucidate how TGF-β alters immunity under various conditions. Under steady-state conditions, TGF-β regulates thymic T-cell selection and maintains homeostasis of the naïve T-cell pool. TGF-β inhibits cytotoxic T lymphocyte (CTL), Th1-, and Th2-cell differentiation while promoting peripheral (p)Treg-, Th17-, Th9-, and Tfh-cell generation, and T-cell tissue residence in response to immune challenges...
January 20, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28108485/tgf-%C3%AE-family-signaling-in-embryonic-and-somatic-stem-cell-renewal-and-differentiation
#4
Alan C Mullen, Jeffrey L Wrana
Soon after the discovery of transforming growth factor-β (TGF-β), seminal work in vertebrate and invertebrate models revealed the TGF-β family to be central regulators of tissue morphogenesis. Members of the TGF-β family direct some of the earliest cell-fate decisions in animal development, coordinate complex organogenesis, and contribute to tissue homeostasis in the adult. Here, we focus on the role of the TGF-β family in mammalian stem-cell biology and discuss its wide and varied activities both in the regulation of pluripotency and in cell-fate commitment...
January 20, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28108300/transforming-growth-factor-beta-inducible-early-gene-1-tieg1-represses-smad7-mediated-activation-of-tgf-%C3%AE-1-smad-signaling-in-keloid-pathogenesis
#5
Zhi-Cheng Hu, Fen Shi, Peng Liu, Jian Zhang, Dong Guo, Xiao-Ling Cao, Chu-Fen Chen, Shanqiang Qu, Jia-Yuan Zhu, Bing Tang
Transforming growth factor β (TGF-β)/Smad signaling plays a key role in excessive fibrosis and keloid formations. Smad7 is a negative feedback regulator that prevents activation of TGF-β/Smad signaling. However, the regulatory mechanism for Smad7 in the keloid pathogenic process remains elusive. Here, we show that expression of TGF-β inducible early gene-1 (TIEG1) is markedly higher in keloid fibroblasts (KFs), while protein, mRNA, and promoter activity levels of Smad7 are decreased. When TIEG1 was knocked down with small interfering RNA (siRNA), both the promoter activity and protein expression of Smad7 were increased, while collagen production and the proliferation, migration, and invasion of KFs were decreased...
January 17, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28107865/adipose-tissue-derived-stem-cells-ameliorates-dermal-fibrosis-in-a-mouse-model-of-scleroderma
#6
Wei Chen, Zhi-Kuan Xia, Man-Hui Zhang, Gui-Chun Ding, Xiao-Yan Zhang, Zheng-Xu Wang, Rong-Ya Yang
OBJECTIVE: To investigate the therapeutic potential of adipose-derived stem cells (ADSCs) for limited cutaneous scleroderma (LS) in mouse models. METHODS: ADSCs were isolated from pathogen-free female C57BL/6 mice and LS was induced in wild type (WT) C57BL/6 mice via daily injection of bleomycin (0.1 mL × 300 μg/mL) for 4 weeks; then the ADSCs were subcutaneously injected into the dorsal area in the model treatment group, and 100 μL of phosphate-buffered saline (PBS) solution was injected into the same site in the model control group...
January 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28107746/induced-differentiation-of-human-gingival-fibroblasts-into-vsmc-like-cells
#7
Xuqian Liu, Jie Wang, Fusheng Dong, Hexiang Li, Yali Hou
Vascular smooth muscle cells (VSMCs) are major component of the vascular wall, and they play an essential role in maintaining the basic physiological function and stable structure of the vascular wall. In the present study, human gingival fibroblasts (HGFs) were cultured and induced into VSMC-like cells in vitro to confirm that HGFs with properties of stem cells have the potential for differentiation. The epithelium isolated from patients was extracted from normal human gingiva consisting of epithelium and connective tissue...
January 17, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28107663/antibacterial-anti-oxidant-electroactive-injectable-hydrogel-as-self-healing-wound-dressing-with-hemostasis-and-adhesiveness-for-cutaneous-wound-healing
#8
Xin Zhao, Hao Wu, Baolin Guo, Ruonan Dong, Yusheng Qiu, Peter X Ma
Injectable self-healing hydrogel dressing with multifunctional properties including anti-infection, anti-oxidative and conductivity promoting wound healing process will be highly desired in wound healing application and its design is still a challenge. We developed a series of injectable conductive self-healed hydrogels based on quaternized chitosan-g-polyaniline (QCSP) and benzaldehyde group functionalized poly(ethylene glycol)-co-poly(glycerol sebacate) (PEGS-FA) as antibacterial, anti-oxidant and electroactive dressing for cutaneous wound healing...
January 11, 2017: Biomaterials
https://www.readbyqxmd.com/read/28107544/cutaneous-hpv8-and-mmupv1-e6-proteins-target-the-notch-and-tgf-%C3%AE-tumor-suppressors-to-inhibit-differentiation-and-sustain-keratinocyte-proliferation
#9
Jordan M Meyers, Aayushi Uberoi, Miranda Grace, Paul F Lambert, Karl Munger
Cutaneous beta-papillomaviruses are associated with non-melanoma skin cancers that arise in patients who suffer from a rare genetic disorder, Epidermodysplasia verruciformis (EV) or after immunosuppression following organ transplantation. Recent studies have shown that the E6 proteins of the cancer associated beta human papillomavirus (HPV) 5 and HPV8 inhibit NOTCH and TGF-β signaling. However, it is unclear whether disruption of these pathways may contribute to cutaneous HPV pathogenesis and carcinogenesis...
January 20, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28106845/post-translational-modifications-of-the-tak1-tab-complex
#10
REVIEW
Yusuke Hirata, Miki Takahashi, Tohru Morishita, Takuya Noguchi, Atsushi Matsuzawa
Transforming growth factor-β (TGF-β)-activated kinase 1 (TAK1) is a member of the mitogen-activated protein kinase kinase kinase (MAPKKK) family that is activated by growth factors and cytokines such as TGF-β, IL-1β, and TNF-α, and mediates a wide range of biological processes through activation of the nuclear factor-κB (NF-κB) and the mitogen-activated protein (MAP) kinase signaling pathways. It is well established that activation status of TAK1 is tightly regulated by forming a complex with its binding partners, TAK1-binding proteins (TAB1, TAB2, and TAB3)...
January 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106826/colorectal-carcinoma-a-general-overview-and-future-perspectives-in-colorectal-cancer
#11
REVIEW
Inés Mármol, Cristina Sánchez-de-Diego, Alberto Pradilla Dieste, Elena Cerrada, María Jesús Rodriguez Yoldi
Colorectal cancer (CRC) is the third most common cancer and the fourth most common cause of cancer-related death. Most cases of CRC are detected in Western countries, with its incidence increasing year by year. The probability of suffering from colorectal cancer is about 4%-5% and the risk for developing CRC is associated with personal features or habits such as age, chronic disease history and lifestyle. In this context, the gut microbiota has a relevant role, and dysbiosis situations can induce colonic carcinogenesis through a chronic inflammation mechanism...
January 19, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106785/ketamine-analog-methoxetamine-induced-inflammation-and-dysfunction-of-bladder-in-rats
#12
Qiang Wang, Qinghui Wu, Junpeng Wang, Yang Chen, Guihao Zhang, Jiawei Chen, Jie Zhao, Peng Wu
The novel synthetic psychoactive ketamine analog methoxetamine is reportedly being used for recreational purposes. As ketamine use can result in urinary dysfunction, we conducted the present study to investigate how methoxetamine affects the bladder. A cystometry investigation showed that female Sprague-Dawley rats experienced increased micturition frequency bladder dysfunction after receiving a daily intraperitoneal injection of 30 mg/kg methoxetamine or ketamine for periods of 4 or 12 weeks. Histologic examinations of rat bladder tissue revealed damaged urothelium barriers, as well as evidence of inflammatory cell infiltration and matrix deposition...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106769/tgf-%C3%AE-signaling-in-gastrointestinal-cancers-progress-in-basic-and-clinical-research
#13
REVIEW
Takehiko Yokobori, Masahiko Nishiyama
Transforming growth factor (TGF)-β superfamily proteins have many important biological functions, including regulation of tissue differentiation, cell proliferation, and migration in both normal and cancer cells. Many studies have reported that TGF-β signaling is associated with disease progression and therapeutic resistance in several cancers. Similarly, TGF-β-induced protein (TGFBI)-a downstream component of the TGF-β signaling pathway-has been shown to promote and/or inhibit cancer. Here, we review the state of basic and clinical research on the roles of TGF-β and TGFBI in gastrointestinal cancers...
January 18, 2017: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/28106121/endoplasmic-reticulum-oxidative-stress-triggers-tgf-beta-dependent-muscle-dysfunction-by-accelerating-ascorbic-acid-turnover
#14
Diego Pozzer, Mariagrazia Favellato, Marco Bolis, Roberto William Invernizzi, Francesca Solagna, Bert Blaauw, Ester Zito
Endoplasmic reticulum (ER) and oxidative stress are two related phenomena that have important metabolic consequences. As many skeletal muscle diseases are triggered by oxidative stress, we explored the chain of events linking a hyperoxidized ER (which causes ER and oxidative stress) with skeletal muscle dysfunction. An unbiased exon expression array showed that the combined genetic modulation of the two master ER redox proteins, selenoprotein N (SEPN1) and endoplasmic oxidoreductin 1 (ERO1), led to an SEPN1-related myopathic phenotype due to excessive signalling of transforming growth factor (TGF)-beta...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105979/human-dental-pulp-stem-cells-are-more-effective-than-human-bone-marrow-derived-mesenchymal-stem-cells-in-cerebral-ischemic-injury
#15
Miyeoun Song, Jae-Hyung Lee, Jinhyun Bae, Youngmin Bu, Eun-Cheol Kim
We compared the therapeutic effects and mechanism of transplanted human dental pulp stem cells (hDPSCs) and human bonemarrow-derived mesenchymal stem cells (hMSCs) in a stroke model of rats and an <i>in vitro</i> ischemic model. Both hDPSCs- and hMSCs- intravenously injected rats 24&#8201;h after middle cerebral artery occlusion showed improved functional recovery and reduced infarct volume versus control rats, but the hDPSCs group showed greater reduction in infarct volume than hMSCs. The positive area for the endothelial cell marker was greater in the lesion boundary areas in the hDPSCs group than with hMSCs...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105938/the-influence-of-pro-longevity-gene-gclc-overexpression-on-the-age-dependent-changes-in-drosophila-transcriptome-and-biological-functions
#16
Alexey Moskalev, Mikhail Shaposhnikov, Ekaterina Proshkina, Alexey Belyi, Alexander Fedintsev, Svetlana Zhikrivetskaya, Zulfiya Guvatova, Asiya Sadritdinova, Anastasia Snezhkina, George Krasnov, Anna Kudryavtseva
BACKGROUND: Transcriptional changes that contribute to the organism's longevity and prevent the age-dependent decline of biological functions are not well understood. Here, we overexpressed pro-longevity gene encoding glutamate-cysteine ligase catalytic subunit (Gclc) and analyzed age-dependent changes in transcriptome that associated with the longevity, stress resistance, locomotor activity, circadian rhythmicity, and fertility. RESULTS: Here we reproduced the life extension effect of neuronal overexpression of the Gclc gene and investigated its influence on the age-depended dynamics of transcriptome and biological functions such as fecundity, spontaneous locomotor activity and circadian rhythmicity, as well as on the resistance to oxidative, proteotoxic and osmotic stresses...
December 28, 2016: BMC Genomics
https://www.readbyqxmd.com/read/28105508/euterpe-oleracea-mart-seed-extract-protects-against-renal-injury-in-diabetic-and-spontaneously-hypertensive-rats-role-of-inflammation-and-oxidative-stress
#17
Viviane da Silva Cristino Cordeiro, Graziele Freitas de Bem, Cristiane Aguiar da Costa, Izabelle Barcellos Santos, Lenize Costa Reis Marins de Carvalho, Dayane Teixeira Ognibene, Ana Paula Machado da Rocha, Jorge José de Carvalho, Roberto Soares de Moura, Angela Castro Resende
PURPOSE: Euterpe oleracea Mart. (açaí) seed extract (ASE), through its anti-hypertensive, antioxidant and anti-inflammatory properties, may be useful to treat or prevent human diseases. Several evidences suggest that oxidative stress and inflammation contribute to the pathogenesis of diabetic nephropathy; therefore, we tested the hypothesis that ASE (200 mg/kg(-1)day(-1)) prevents diabetes and hypertension-related oxidative stress and inflammation, attenuating renal injury. METHODS: Male rats with streptozotocin (STZ)-induced diabetes (D), and spontaneously hypertensive rats with STZ-induced diabetes (DH) were treated daily with tap water or ASE (D + ASE and DH + ASE, respectively) for 45 days...
January 20, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28105212/emt-influences-the-expression-of-ck19-in-pleural-effusion-derived-lung-cancer-cells-and-their-invasion-and-metastasis
#18
Dongyun Huang, Wenjing Xu, Xingxiang Xu, Xudong Zhang, Rui Zhou, Ping Chen
Lung cancer is the most common cancer after breast and colon cancer, with high rates of mortality, worldwide. There are two main types of lung cancer, small cell lung carcinoma (SCLC), which accounts for approximately 20% of all lung cancer cases and non-SCLC, which accounts for almost 80% of lung cancer cases. Although lung cancer is one of the most aggressive types of cancer, progress in achieving better clinical outcomes has been gradual. Even though a number of markers have been suggested for the diagnosis of lung cancer and monitoring of disease progression, there is no clear way of assessing the invasion, epithelial-mesenchymal transition (EMT) and metastasizing capability of the primary tumor cells...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104472/downregulation-of-mir-145-in-venous-malformations-its-association-with-disorganized-vessels-and-sclerotherapy
#19
Hou-Fu Xia, Jian-Gang Ren, Jun-Yi Zhu, Zi-Li Yu, Wei Zhang, Yan-Fang Sun, Yi-Fang Zhao, Gang Chen
Venous malformations (VMs) are characterized by ectatic and tortuous venous channels with decreased perivascular cell coverage. Recent studies have discovered that miR-145 plays a critical role in amounts of vascular diseases through regulating the differentiation and phenotype of vascular smooth muscle cells (VSMCs). However, the potential roles of miR-145 in VMs remain unknown. In this study, 21 samples of VMs without treatment history, and 10 samples of healthy donor skin, were collected to evaluate the expression level of TGF-β, miR-145, and α-SMA by immunohistochemistry, in situ hybridization, and real-time polymerase chain reaction (PCR)...
January 16, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28104390/progesterone-and-vip-cross-talk-enhances-phagocytosis-and-anti-inflammatory-profile-in-trophoblast-derived-cells
#20
Daiana Vota, Mariana Aguero, Esteban Grasso, Vanesa Hauk, Lucila Gallino, Elizabeth Soczewski, Claudia Pérez Leirós, Rosanna Ramhorst
Trophoblast cells produce several inmmuneregulators like the Vasoactive Intestinal Peptide (VIP) and P4 targeting multiple circuits, and also display an intese phagocytic ability allowing embryo implantation in a tolerogenic context. Here, we explored whether P4 and VIP- crosstalk modulates trophoblast cell function, focus on the phagocytic ability and the immune homeostasis maintenance. P4 enhanced the phagocytosis in trophoblast-derived cells quantified by the engulfment of latex-beads or eryptotic erythrocytes...
January 16, 2017: Molecular and Cellular Endocrinology
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