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https://www.readbyqxmd.com/read/29664513/vitiligo-type-cutaneous-manifestation-of-chronic-graft-versus-host-disease-case-report
#1
Karla Gálvez, Paula Muñoz, Valentina Vera, Claudio Arce
INTRODUCTION: Graft-versus-host disease (GVHD) is caused by a pathologic and destructive response of the organism as a result of the interaction between donor immunocompetent T lymphocytes and the recipient tisular antigens. It's considered the most serious complication of hematopoietic stem cell transplantation, most frequently described after bone marrow transplantation (BMT). The skin is usually the first and most commonly affected organ, in both acute and chronic, with a variable clinical spectrum of presentation...
February 2018: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/29663707/engineering-pro-regenerative-hydrogels-for-scarless-wound-healing
#2
REVIEW
Guoming Sun, Yu-I Shen, John W Harmon
Skin and skin appendages protect the body from harmful environment and prevent internal organs from dehydration. Superficial epidermal wounds usually heal without scarring, however, deep dermal wound healing commonly ends up with nonfunctioning scar formation with substantial loss of skin appendage. Wound healing is one of the most complex dynamic biological processes, during which a cascade of biomolecules combine with stem cell influx and matrix synthesis and synergistically contribute to wound healing at all levels...
April 16, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29662491/regulatory-t-cells-potential-regulator-of-tissue-repair-and-regeneration
#3
REVIEW
Jiatao Li, Jean Tan, Mikaël M Martino, Kathy O Lui
The identification of stem cells and growth factors as well as the development of biomaterials hold great promise for regenerative medicine applications. However, the therapeutic efficacy of regenerative therapies can be greatly influenced by the host immune system, which plays a pivotal role during tissue repair and regeneration. Therefore, understanding how the immune system modulates tissue healing is critical to design efficient regenerative strategies. While the innate immune system is well known to be involved in the tissue healing process, the adaptive immune system has recently emerged as a key player...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29662191/wnt-ligands-control-initiation-and-progression-of-human-papillomavirus-driven-squamous-cell-carcinoma
#4
Dario Zimmerli, Virginia Cecconi, Tomas Valenta, George Hausmann, Claudio Cantù, Gaetana Restivo, Jürg Hafner, Konrad Basler, Maries van den Broek
Human papillomavirus (HPV)-driven cutaneous squamous cell carcinoma (cSCC) is the most common cancer in immunosuppressed patients. Despite indications suggesting that HPV promotes genomic instability during cSCC development, the molecular pathways underpinning HPV-driven cSCC development remain unknown. We compared the transcriptome of HPV-driven mouse cSCC with normal skin and observed higher amounts of transcripts for Porcupine and WNT ligands in cSCC, suggesting a role for WNT signaling in cSCC progression...
April 17, 2018: Oncogene
https://www.readbyqxmd.com/read/29658163/a-novel-oncolytic-herpes-capable-of-cell-specific-transcriptional-targeting-of-cd133%C3%A2-cancer-cells-induces-significant-tumor-regression
#5
Kaoru Terai, Danse Bi, Zhengian Liu, Emma Borrego-Diaz, Kyle Kimura, Zohreh Sanaat, Roya Dolatkhah, Mina Soleimani, Christopher Jones, Judith Larson, Allison Bright, Tuba Esfandyari, Faris Farassati
The topic of cancer stem cells is of significant importance due to its implications in our understanding of the tumor biology, as well as the development of novel cancer therapeutics. However, the question of whether targeting cancer stem cells can hamper the growth of tumors remains mainly unanswered due to the lack of specific agents for this purpose. In order to address this issue, we have developed the first mutated version of herpes simplex virus-1 (HSV-1) that is transcriptionally targeted against CD133+ cells...
April 15, 2018: Stem Cells
https://www.readbyqxmd.com/read/29655989/in-vivo-migration-of-mesenchymal-stem-cells-to-burn-injury-sites-and-their-therapeutic-effects-in-a-living-mouse-model
#6
Eun Jung Oh, Ho Won Lee, Senthilkumar Kalimuthu, Tae Jung Kim, Hyun Mi Kim, Se Hwan Baek, Liya Zhu, Ji Min Oh, Seung Hyun Son, Ho Yun Chung, Byeong-Cheol Ahn
Mesenchymal stem cell (MSC)-based therapy has emerged as a promising therapeutic strategy for tissue regeneration and repair. In this study, we non-invasively monitored the tracking of MSCs toward burn injury sites using MSCs expressing firefly luciferase (Fluc) gene in living mice, and evaluated the effects of the MSCs at the injury site. Murine MSCs co-expressing Fluc and green fluorescent protein (GFP) were established using a retroviral system (referred to as MSC/Fluc). To evaluate the ability of MSC migration toward burn injury sites, cutaneous burn injury was induced in the dorsal skin of mice...
April 12, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29655590/early-initiation-of-extracorporeal-photochemotherapy-increases-response-for-chronic-graft-versus-host-disease-following-steroid-failure
#7
M Gunduz, E Atilla, P A Atilla, P Topcuoglu, O Ilhan
OBJECTIVES: Chronic graft versus host disease (GVHD) is one of the major obstacles to achieve success in allogeneic hematopoietic stem cell transplantation (allo-HSCT). Extracorporeal photochemotherapy (ECP) has been demonstrated to be an effective modality for the treatment of GVHD in previous studies but they vary in terms of initiation and duration. Our aim is to demonstrate the characteristics of our patients who received ECP for chronic GVHD to clarify the best treatment scheme. MATERIAL AND METHODS: In this study, we retrospectively evaluated 34 patients with steroid refractory chronic GVHD (n=34) who were treated with ECP between 2001 and 2015...
April 11, 2018: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/29653394/generation-of-duchenne-muscular-dystrophy-patient-specific-induced-pluripotent-stem-cell-line-lacking-exons-45-50-of-the-dystrophin-gene-iiti001-a
#8
Binyamin Eisen, Ronen Ben Jehuda, Ashley J Cuttitta, Lucy N Mekies, Irina Reiter, Sindhu Ramchandren, Michael Arad, Daniel E Michele, Ofer Binah
Duchenne muscular dystrophy (DMD) is an X-linked progressive muscle degenerative disease caused by mutations in the dystrophin gene. We generated induced pluripotent stem cells (iPSCs) from a 13-year-old male patient carrying a deletion mutation of exons 45-50; iPSCs were subsequently differentiated into cardiomyocytes. iPSCs exhibit expression of the pluripotent markers (SOX2, NANOG, OCT4), differentiation capacity into the three germ layers, normal karyotype, genetic identity to the skin biopsy dermal fibroblasts and the patient-specific dystrophin mutation...
April 3, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29653141/dual-mechanism-of-type-vii-collagen-transfer-by-bone-marrow-mesenchymal-stem-cell-extracellular-vesicles-to-recessive-dystrophic-epidermolysis-bullosa-fibroblasts
#9
Jeffrey McBride, Luis Rodriguez-Menocal, Ambar Candanedo, Wellington Guzman, Marta Garcia-Contreras, Evangelos Badiavas
Recessive dystrophic epidermolysis bullosa (RDEB) is a severe blistering disease resulting from a lack of type VII collagen production. Recent clinical trials have shown efficacy of bone marrow-derived mesenchymal stem cells (BM-MSCs) in the treatment of epidermolysis bullosa, including improved basement membrane restructuring and cutaneous wound healing. The mechanism as to how type VII collagen is transferred from donor stem cell to recipient RDEB cells has not been defined. Here, we submit the model that BM-MSC-derived extracellular vesicles serve at least two roles: 1) to help transport type VII collagen within the extracellular space; and 2) to feed RDEB fibroblasts with messenger RNA that codes for type VII collagen, resulting in COL7A1 translation and synthesis of type VII collagen alpha chain proteins by RDEB fibroblasts...
April 10, 2018: Biochimie
https://www.readbyqxmd.com/read/29651869/new-mesh-type-phantoms-and-their-dosimetric-applications-including-emergencies
#10
C H Kim, Y S Yeom, T T Nguyen, M C Han, C Choi, H Lee, H Han, B Shin, J-K Lee, H S Kim, M Zankl, N Petoussi-Henss, W E Bolch, C Lee, B S Chung, R Qiu, K Eckerman
Committee 2 of the International Commission on Radiological Protection (ICRP) has constructed mesh-type adult reference computational phantoms by converting the voxel-type ICRP Publication 110 adult reference computational phantoms to a high-quality mesh format, and adding those tissues that were below the image resolution of the voxel phantoms and therefore not included in the Publication 110 phantoms. The new mesh phantoms include all the necessary source and target tissues for effective dose calculations, including the 8-40-µm-thick target layers of the alimentary and respiratory tract organs, thereby obviating the need for supplemental organ-specific stylised models (e...
January 1, 2018: Annals of the ICRP
https://www.readbyqxmd.com/read/29651840/glucosamine-based-supramolecular-nanotubes-for-human-mesenchymal-cell-therapy
#11
Satish Talloj, Bill Cheng, Jen-Po Weng, Hsin-Chieh Lin
Herein, we demonstrate an example of glucosamine-based supramolecular hydrogels that can be used for human mesenchymal cell therapy. We designed and synthesized a series of amino acid derivatives based on a strategy of capping D-glucosamine moiety at C-terminus and fluorinated benzyl group at N-terminus. From a systematic study on chemical structures, we discovered that the glucosamine-based supramolecular hydrogel (PFB-F-Glu) self-assembled with one dimensional nanotubular structures at physiological pH. The self-assembly of newly discovered PFB-F-Glu motif is attributed to synergistic effect of π-π stacking and extensive intermolecular hydrogen bonding network in aqueous medium...
April 13, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29644941/role-of-micrornas-in-treatment-response-in-prostate-cancer
#12
Anshuli Razdan, Paul de Souza, Tara Laurie Roberts
Prostate cancer (PCa) is the most common non-skin cancer in men worldwide, resulting in significant mortality and morbidity. Depending on the grade and stage of the cancer, patients may be given radiation therapy, hormonal therapy, or chemotherapy. However, more than half these patients develop resistance to treatment, leading to disease progression and metastases, often with lethal consequences. MicroRNAs (miRNAs) are short, non-coding RNAs, which regulate numerous physiological as well as pathological processes, including cancer...
March 15, 2018: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/29627369/instructive-microenvironments-in-skin-wound-healing-biomaterials-as-signal-releasing-platforms
#13
Oscar Castaño, Soledad Pérez-Amodio, Claudia Navarro, Miguel Ángel Mateos-Timoneda, Elisabeth Engel
Skin wound healing aims to repair and restore tissue through a multistage process that involves different cells and signalling molecules that regulate the cellular response and the dynamic remodelling of the extracellular matrix. Nowadays, several therapies that combine biomolecule signals (growth factors and cytokines) and cells are being proposed. However, a lack of reliable evidence of their efficacy, together with associated issues such as high costs, a lack of standardization, no scalable processes, and storage and regulatory issues, are hampering their application...
April 5, 2018: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29623021/biochemical-aspects-of-mammalian-melanocytes-and-the-emerging-role-of-melanocyte-stem-cells-in-dermatological-therapies
#14
REVIEW
Sharique A Ali, Ishrat Naaz
Skin color in animals is richer than human beings and is determined by different types of pigments. Melanin is the key pigment responsible for the diverse pigmentation found in animal and human skin, hair, and eyes. Melanin pigment is synthesized by melanocytes and is consecutively transferred to adjacent keratinocytes; here, it acts as an internal sunscreen to defend from ultraviolet (UV) damage. Any defect in the process of melanocytes development and/or melanin synthesis results in esthetic problem of abnormal pigmentation...
January 2018: International Journal of Health Sciences
https://www.readbyqxmd.com/read/29621642/adipose-derived-stem-cells-improve-full-thickness-skin-grafts-in-a-rat-model
#15
Silvana Bellini Vidor, Paula Barros Terraciano, Fernanda Soldatelli Valente, Verônica Machado Rolim, Cristiana Palma Kuhl, Laura Silveira Ayres, Tuane Nerissa Alves Garcez, Natália Emerim Lemos, Cristiano Ely Kipper, Sabrina Beal Pizzato, David Driemeier, Elizabeth Obino Cirne-Lima, Emerson Antonio Contesini
To investigate the effects of heterologous adipose-derived stem cells (ADSCs) on autologous full-thickness skin grafts, we designed a first-intention healing model using Wistar rats. We harvested and sutured two full-thickness skin grafts in the dorsal recipient beds of 15 rats, randomized into three groups. In the treatment group, 1 × 106 ADSCs resuspended in saline solution (200 μL) were administered subcutaneously to the skin graft. The control group received only saline solution subcutaneously, whereas the negative control group did not receive any treatment...
March 28, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29615568/roles-of-the-hedgehog-signaling-pathway-in-epidermal-and-hair-follicle-development-homeostasis-and-cancer
#16
REVIEW
Yoshinori Abe, Nobuyuki Tanaka
The epidermis is the outermost layer of the skin and provides a protective barrier against environmental insults. It is a rapidly-renewing tissue undergoing constant regeneration, maintained by several types of stem cells. The Hedgehog (HH) signaling pathway is one of the fundamental signaling pathways that contributes to epidermal development, homeostasis, and repair, as well as to hair follicle development and follicle bulge stem cell maintenance. The HH pathway interacts with other signal transduction pathways, including those activated by Wnt, bone morphogenetic protein, platelet-derived growth factor, Notch, and ectodysplasin...
November 20, 2017: Journal of Developmental Biology
https://www.readbyqxmd.com/read/29615452/glutamate-transporter-slc1a3-mediates-inter-niche-stem-cell-activation-during-skin-growth
#17
Bettina Reichenbach, Johanna Classon, Tomomi Aida, Kohichi Tanaka, Maria Genander, Christian Göritz
Tissues contain distinct stem cell niches, but whether cell turnover is coordinated between niches during growth is unknown. Here, we report that in mouse skin, hair growth is accompanied by sebaceous gland and interfollicular epidermis expansion. During hair growth, cells in the bulge and outer root sheath temporarily upregulate the glutamate transporter SLC1A3, and the number of SLC1A3+ basal cells in interfollicular epidermis and sebaceous gland increases. Fate mapping of SLC1A3+ cells in mice revealed transient expression in proliferating stem/progenitor cells in all three niches...
April 3, 2018: EMBO Journal
https://www.readbyqxmd.com/read/29614431/3d-cell-printing-of-in-vitro-stabilized-skin-model-and-in-vivo-pre-vascularized-skin-patch-using-tissue-specific-extracellular-matrix-bioink-a-step-towards-advanced-skin-tissue-engineering
#18
Byoung Soo Kim, Yang Woo Kwon, Jeong-Sik Kong, Gyu Tae Park, Ge Gao, Wonil Han, Moon-Bum Kim, Hyungseok Lee, Jae Ho Kim, Dong-Woo Cho
3D cell-printing technique has been under spotlight as an appealing biofabrication platform due to its ability to precisely pattern living cells in pre-defined spatial locations. In skin tissue engineering, a major remaining challenge is to seek for a suitable source of bioink capable of supporting and stimulating printed cells for tissue development. However, current bioinks for skin printing rely on homogeneous biomaterials, which has several shortcomings such as insufficient mechanical properties and recapitulation of microenvironment...
March 23, 2018: Biomaterials
https://www.readbyqxmd.com/read/29606893/first-in-man-intravenous-implantation-of-stromal-vascular-fraction-in-psoriasis-a-case-study
#19
Kristin Comella, Michelle Parlo, Rosemary Daly, Kellie Dominessy
Background: Stromal vascular fraction (SVF) is a mixture of adipose-derived stem cells/mesenchymal stem cells, endothelial/progenitors, pericytes, fibroblasts, and other cells obtained from fat tissue. A small sample of fat or adipose tissue can be obtained under local anesthesia using a cannula. After an enzymatic digestion and centrifugation, the adipocytes (fat cells) are removed to obtain an SVF. Here, we describe the rationale and, to our knowledge, the first clinical implementation of SVF intravenously in a patient with severe psoriasis...
2018: International Medical Case Reports Journal
https://www.readbyqxmd.com/read/29606302/bi-allelic-alterations-in-aebp1-lead-to-defective-collagen-assembly-and-connective-tissue-structure-resulting-in-a-variant-of-ehlers-danlos-syndrome
#20
Patrick R Blackburn, Zhi Xu, Kathleen E Tumelty, Rose W Zhao, William J Monis, Kimberly G Harris, Jennifer M Gass, Margot A Cousin, Nicole J Boczek, Mario V Mitkov, Mark A Cappel, Clair A Francomano, Joseph E Parisi, Eric W Klee, Eissa Faqeih, Fowzan S Alkuraya, Matthew D Layne, Nazli B McDonnell, Paldeep S Atwal
AEBP1 encodes the aortic carboxypeptidase-like protein (ACLP) that associates with collagens in the extracellular matrix (ECM) and has several roles in development, tissue repair, and fibrosis. ACLP is expressed in bone, the vasculature, and dermal tissues and is involved in fibroblast proliferation and mesenchymal stem cell differentiation into collagen-producing cells. Aebp1-/- mice have abnormal, delayed wound repair correlating with defects in fibroblast proliferation. In this study, we describe four individuals from three unrelated families that presented with a unique constellation of clinical findings including joint laxity, redundant and hyperextensible skin, poor wound healing with abnormal scarring, osteoporosis, and other features reminiscent of Ehlers-Danlos syndrome (EDS)...
March 29, 2018: American Journal of Human Genetics
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