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https://www.readbyqxmd.com/read/28615711/identification-and-characterization-of-a-rich-population-of-cd34-mesenchymal-stem-stromal-cells-in-human-parotid-sublingual-and-submandibular-glands
#1
Padma Priya Togarrati, Robson T Sasaki, Mohamed Abdel-Mohsen, Nuntana Dinglasan, Xutao Deng, Shivani Desai, Elaine Emmerson, Elizabeth Yee, William R Ryan, Marcelo C P da Silva, Sarah M Knox, Satish K Pillai, Marcus O Muench
Mesenchymal stem/stromal cells (MSCs) play crucial roles in maintaining tissue homeostasis during physiological turnovers and injuries. Very little is known about the phenotype, distribution and molecular nature of MSCs in freshly isolated human salivary glands (SGs) as most reports have focused on the analysis of cultured MSCs. Our results demonstrate that the cell adhesion molecule CD34 was widely expressed by the MSCs of human major SGs, namely parotid (PAG), sublingual (SLG) and submandibular (SMG) glands...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28587347/effect-of-mesenchymal-stem-cells-on-sj%C3%A3-gren-like-mice-and-the-microrna-expression-profiles-of-splenic-cd4-t-cells
#2
Guang-Feng Ruan, Ling Zheng, Jia-Shu Huang, Wan-Xue Huang, Bang-Dong Gong, Xing-Xing Fang, Xiao-Yu Zhang, Jian-Ping Tang
Mesenchymal stem cells (MSCs) serve immuno-regulatory functions and offer a promising novel treatment for certain autoimmune diseases. The present study investigated the therapeutic effect of mice bone marrow (BM)-MSCs on mice with relatively late stage of Sjögren-like disease and the impact of BM-MSCs on the microRNA (miRNA) expression profiles of splenic CD4+ T cells. Female NOD/Ltj mice were randomized into two groups: The disease group (n=8) and the MSC-treated group (n=8). Female ICR mice served as the healthy control group (n=8)...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28541773/induction-of-salivary-gland-like-cells-from-dental-follicle-epithelial-cells
#3
Q L Xu, A Furuhashi, Q Z Zhang, C M Jiang, T-H Chang, A D Le
The dental follicle (DF), most often associated with unerupted teeth, is a condensation of ectomesenchymal cells that surrounds the tooth germ in early stages of tooth development. In the present study, we aim to isolate epithelial stem-like cells from the human DF and explore their potential differentiation into salivary gland (SG) cells. We demonstrated the expression of stem cell-related genes in the epithelial components of human DF tissues, and these epithelial progenitor cells could be isolated and ex vivo expanded in a reproducible manner...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28537471/characteristics-of-labial-gland-mesenchymal-stem-cells-of-healthy-individuals-and-patients-with-sj%C3%A3-gren-syndrome-a-preliminary-study
#4
Shiqin Wang, Hong Hua, Yixiang Wang
Sjögren's Syndrome (SS) is a systemic autoimmune disease characterized by focal lymphocytic infiltration into exocrine organs such as salivary and lacrimal glands, resulting in dry mouth and eyes, and other systemic injuries. The mesenchymal stem cells (MSCs) in the salivary glands of healthy individuals and patients with SS have not been extensively studied. The aim of this study was to eluciadate the characteristics of MSCs from the labial glands of healthy controls and of those from patients with SS in order to elucidate the related pathogenesis and uncover potential avenues for novel clinical interventions...
May 24, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28500913/myb-fusions-and-cd-markers-as-tools-for-authentication-and-purification-of-cancer-stem-cells-from-salivary-adenoid-cystic-carcinoma
#5
Alex Panaccione, Yi Zhang, Molly Ryan, Christopher A Moskaluk, Karen S Anderson, Wendell G Yarbrough, Sergey V Ivanov
Cancer stem cells (CSC) are considered the major cause of aggressive tumor behavior, recurrence, metastases, and resistance to radiation, making them an attractive therapeutic target. However, isolation of CSC from tumor tissue and their characterization are challenging due to uncertainty about their molecular markers and conditions for their propagation. Adenoid cystic carcinoma (ACC), which arises predominantly in the salivary glands, is a slow-growing but relentless tumor that frequently invades nerves and metastasizes...
May 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28448600/mscs-feeder-layers-induce-smg-self-organization-and-branching-morphogenesis
#6
Mahmoud Farahat, Gulsan Ara Sathi, Emilio Satoshi Hara, Hiroaki Taketa, Takuo Kuboki, Takuya Matsumoto
Dysfunction of salivary glands leads to several oral health problems, including dental caries, mastication and swallowing dysfunctions and multiple oral infections. Conventional treatments for such condition fell short of providing satisfying therapeutic results. Recent advances in organ regeneration therapy which utilize tissue stem cells to fabricate bioengineered 3D organ buds, have introduced a promising therapeutic tool for full functional organ regeneration. However, finding a sustainable and easily accessible cell source for such approaches is still challenging, especially in case of severely atrophied tissues such as irradiated salivary glands...
2017: PloS One
https://www.readbyqxmd.com/read/28410601/the-diagnosis-and-management-of-nk-t-cell-lymphomas
#7
REVIEW
Eric Tse, Yok-Lam Kwong
Extranodal natural killer (NK)/T-cell lymphoma is an aggressive malignancy of putative NK-cell origin, with a minority deriving from the T-cell lineage. Pathologically, the malignancy occurs in two forms, extranodal NK/T-cell lymphoma, nasal type; and aggressive NK-cell leukaemia. Lymphoma occur most commonly (80%) in the nose and upper aerodigestive tract, less commonly (20%) in non-nasal areas (skin, gastrointestinal tract, testis, salivary gland), and rarely as disseminated disease with a leukemic phase...
April 14, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28337279/agr2-promotes-the-proliferation-migration-and-regulates-epithelial-mesenchymal-transition-in-salivary-adenoid-cystic-carcinoma
#8
Si-Rui Ma, Liang Mao, Wei-Wei Deng, Yi-Cun Li, Lin-Lin Bu, Guang-Tao Yu, Wen-Feng Zhang, Zhi-Jun Sun
Salivary adenoid cystic carcinoma (AdCC) is a common head and neck cancer with the propensity for local spread and distant metastasis. In our previous study, elevated expression of Anterior gradient 2 (AGR2) was detected in head and neck squamous cell carcinoma (HNSCC), associated with epithelial-mesenchymal transition (EMT) and cancer stemness. However, to date, the expression and function of AGR2 in AdCC has yet to be elucidated. In the present study, human AdCC tissue microarrays including 18 cases of normal salivary gland (NSG), 12 cases of pleomorphic adenoma (PMA) and 72 cases of AdCC were employed for immunohistochemical staining analysis...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28270226/first-in-man-mesenchymal-stem-cells-for-radiation-induced-xerostomia-mesrix-study-protocol-for-a-randomized-controlled-trial
#9
Christian Grønhøj, David H Jensen, Peter V Glovinski, Siri Beier Jensen, Allan Bardow, Roberto S Oliveri, Lena Specht, Carsten Thomsen, Sune Darkner, Katalin Kiss, Anne Fischer-Nielsen, Christian von Buchwald
BACKGROUND: Salivary gland hypofunction and xerostomia are major complications following radiotherapy for head and neck cancer and may lead to debilitating oral disorders and impaired quality of life. Currently, only symptomatic treatment is available. However, mesenchymal stem cell (MSC) therapy has shown promising results in preclinical studies. Objectives are to assess safety and efficacy in a first-in-man trial on adipose-derived MSC therapy (ASC) for radiation-induced xerostomia...
March 7, 2017: Trials
https://www.readbyqxmd.com/read/28262804/prognostic-factors-of-palatal-mucoepidermoid-carcinoma-a-retrospective-analysis-based-on-a-double-center-study
#10
Wenguang Xu, Yufeng Wang, Xiaofeng Qi, Junqi Xie, Zheng Wei, Xiteng Yin, Zhiyong Wang, Jian Meng, Wei Han
Mucoepidermoid carcinoma (MEC) of the palate is a common malignancy of minor salivary glands. This study was designed to identify the prognostic factors for MEC of the palate. The medical records of patients diagnosed with MEC of the palate who visited the Department of Oral and Maxillofacial Surgery at Nanjing Stomatological Hospital and the Department of Stomatology at Central Hospital of Xuzhou were retrospectively studied. The prognostic factors were determined using a Cox proportional hazards model. Furthermore, the expression of cancer stem cell (CSC) markers CD44, CD133, Nanog and Sox2 were detected in neoplastic samples of these patients by immunohistochemistry...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28249646/chromosomal-abnormalities-and-molecular-landscape-of-metastasizing-mucinous-salivary-adenocarcinoma
#11
Alex Panaccione, Yi Zhang, Yanfang Mi, Yoshitsugu Mitani, Guo Yan, Manju L Prasad, W Hayes McDonald, Adel K El-Naggar, Wendell G Yarbrough, Sergey V Ivanov
BACKGROUND: Mucinous adenocarcinoma of the salivary gland (MAC) is a lethal cancer with unknown molecular etiology and a high propensity to lymph node metastasis. Mostly due to its orphan status, MAC remains one of the least explored cancers that lacks cell lines and mouse models that could help translational and pre-clinical studies. Surgery with or without radiation remains the only treatment modality but poor overall survival (10-year, 44%) underscores the urgent need for mechanism-based therapies...
March 2017: Oral Oncology
https://www.readbyqxmd.com/read/28170182/primary-salivary-human-stem-progenitor-cells-undergo-microenvironment-driven-acinar-like-differentiation-in-hyaluronate-hydrogel-culture
#12
Padma Pradeepa Srinivasan, Vaishali N Patel, Shuang Liu, Daniel A Harrington, Matthew P Hoffman, Xinqiao Jia, Robert L Witt, Mary C Farach-Carson, Swati Pradhan-Bhatt
Radiotherapy for head and neck cancer often has undesirable effects on salivary glands that lead to xerostomia or severe dry mouth, which can increase oral infections. Our goal is to engineer functional, three-dimensional (3D) salivary gland neotissue for autologous implantation to provide permanent relief. An immediate need exists to obtain autologous adult progenitor cells as the use of embryonic and induced pluripotent stem cells potentially pose serious risks such as teratogenicity and immunogenic rejection...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28158262/uncovering-stem-cell-differentiation-factors-for-salivary-gland-regeneration-by-quantitative-analysis-of-differential-proteomes
#13
Yun-Jong Park, Jin Koh, Jin Teak Kwon, Yong-Seok Park, Lijun Yang, Seunghee Cha
Severe xerostomia (dry mouth) compromises the quality of life in patients with Sjögren's syndrome or radiation therapy for head and neck cancer. A clinical management of xerostomia is often unsatisfactory as most interventions are palliative with limited efficacy. Following up our previous study demonstrating that mouse BM-MSCs are capable of differentiating into salivary epithelial cells in a co-culture system, we further explored the molecular basis that governs the MSC reprogramming by utilizing high-throughput iTRAQ-2D-LC-MS/MS-based proteomics...
2017: PloS One
https://www.readbyqxmd.com/read/28072927/artificial-induction-of-native-aquaporin-1-expression-in-human-salivary-cells
#14
Z Wang, S Pradhan-Bhatt, M C Farach-Carson, M J Passineau
Gene therapy for dry mouth disorders has transitioned in recent years from theoretical to clinical proof of principle with the publication of a first-in-man phase I/II dose escalation clinical trial in patients with radiation-induced xerostomia. This trial used a prototype adenoviral vector to express aquaporin-1 (AQP1), presumably in the ductal cell layer and/or in surviving acinar cells, to drive transcellular flux of interstitial fluid into the labyrinth of the salivary duct. As the development of this promising gene therapy continues, safety considerations are a high priority, particularly those that remove nonhuman agents (i...
April 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28008389/immunohistochemical-expression-of-cd56-and-aldh1-in-common-salivary-gland-tumors
#15
Safoura Seifi, Maryam Seyedmajidi, Jahanshah Salehinejad, Hemmat Gholinia, Fatemeh Aliakbarpour
INTRODUCTION: Natural killer (NK) cells, of which CD56 is a specific marker, play an important role in host defense against tumors. Cancer stem cells, of which aldehyde dehydrogenase isoform 1 (ALDH1) is an immunohistochemical marker, are a group of tumorigenic cells which are involved in migration and tumor recurrences. We aimed to evaluate the expression of ALDH1 and CD56 in common salivary gland tumors, as well as their relationship with each other and with a number of clinicopathologic factors...
November 2016: Iranian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/27990487/tuning-hydrogel-properties-to-promote-the-assembly-of-salivary-gland-spheroids-in-3d
#16
Tugba Ozdemir, Eric W Fowler, Shuang Liu, Daniel A Harrington, Robert L Witt, Mary C Farach-Carson, Swati Pradhan-Bhatt, Xinqiao Jia
Current treatments for chronic xerostomia, or "dry mouth", do not offer long-term therapeutic benefits for head and neck cancer survivors previously treated with curative radiation. Towards the goal of creating tissue-engineered constructs for the restoration of salivary gland functions, we developed new hyaluronic acid (HA)-based hydrogels using thiolated HA (HA-SH) and acrylated HA (HA-AES) with a significant molecular weight mismatch. Four hydrogel formulations with varying HA concentration, (1-2.4 wt%) and thiol/acrylate ratios (2/1 to 36/1) and elastic moduli (G': 35 to 1897 Pa, 2 h post-mixing) were investigated...
December 12, 2016: ACS Biomaterials Science & Engineering
https://www.readbyqxmd.com/read/27884045/retinoic-acid-signaling-regulates-krt5-and-krt14-independently-of-stem-cell-markers-in-submandibular-salivary-gland-epithelium
#17
Timur M Abashev, Melissa A Metzler, Diana M Wright, Lisa L Sandell
BACKGROUND: Retinoic acid (RA), the active metabolite of vitamin A, has been demonstrated to be important for growth and branching morphogenesis of mammalian embryonic salivary gland epithelium. However, it is not known whether RA functions directly within epithelial cells or in associated tissues that influence morphogenesis of salivary epithelium. Moreover, downstream targets of RA regulation have not been identified. RESULTS: Here, we show that canonical RA signaling occurs in multiple tissues of embryonic mouse salivary glands, including epithelium, associated parasympathetic ganglion neurons, and nonneuronal mesenchyme...
February 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/27860388/enhanced-tissue-remodeling-efficacy-of-adipose-derived-mesenchymal-stem-cells-using-injectable-matrices-in-radiation-damaged-salivary-gland-model
#18
Jeong-Seok Choi, Hye-Young An, Hyun-Soo Shin, Young-Mo Kim, Jae-Yol Lim
The present study was conducted to introduce the use of a delivery carrier for local transplantation of human adipose tissue-derived mesenchymal stem cells (AdMSCs) into the salivary gland (SG) and analyze its ability to enhance radioprotection of AdMSCs against irradiation (IR)-induced damage. An injectable porcine small intestinal submucosa (SIS) matrix was used as a cell delivery carrier and human AdMSCs were contained within SIS hydrogel (AdMSC/SIS). After local injection into SGs of mice following local IR, morphological and functional changes were evaluated in the sham, vehicle (PBS), SIS, AdMSC, and AdMSC/SIS groups...
November 12, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27824146/single-cell-clones-purified-from-human-parotid-glands-display-features-of-multipotent-epitheliomesenchymal-stem-cells
#19
TacGhee Yi, Songyi Lee, Nahyun Choi, Hyun-Soo Shin, Junghee Kim, Jae-Yol Lim
A better understanding of the biology of tissue-resident stem cell populations is essential to development of therapeutic strategies for regeneration of damaged tissue. Here, we describe the isolation of glandular stem cells (GSCs) from a small biopsy specimen from human parotid glands. Single colony-forming unit-derived clonal cells were isolated through a modified subfractionation culture method, and their stem cell properties were examined. The isolated clonal cells exhibited both epithelial and mesenchymal stem cell (MSC)-like features, including differentiation potential and marker expression...
November 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27621149/intraglandular-transplantation-of-adipose-derived-stem-cells-for-the-alleviation-of-irradiation-induced-parotid-gland-damage-in-miniature-pigs
#20
Zhifa Wang, Zhaoyu Ju, Longlong He, Zhijin Li, Yanpu Liu, Bin Liu
PURPOSE: In a previous study, the authors verified the protective efficacy of adipose-derived stem cells (ADSCs) on the prevention of salivary gland (SG) damage induced by irradiation in mice. As a critical step before implementation in clinical practice, the present study investigated the protective effect of ADSCs in a miniature pig SG model, because miniature pigs share many characteristics with humans. MATERIALS AND METHODS: Third-passage autologous ADSCs at a concentration of 4 × 10(6) cells/mL were transplanted by intraglandular injection into parotid glands (PGs) immediately after local irradiation at a single dose of 20 Gy...
August 16, 2016: Journal of Oral and Maxillofacial Surgery
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