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mesenchymal cell therapy

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https://www.readbyqxmd.com/read/28640590/chlorin-e6-functionalized-theranostic-multistage-nanovectors-transported-by-stem-cells-for-effective-photodynamic-therapy
#1
Simo Näkki, Jonathan Martinez, Michael Evangelopoulos, Wujun Xu, Vesa-Pekka Lehto, Ennio Tasciotti
Approaches to achieve site-specific and targeted delivery that provide an effective solution to reduce negative, off target side-effects are urgently needed for cancer therapy. Here, we utilized a Trojan horse-like strategy to carry photosensitizer Chlorin e6 conjugated porous silicon multistage nanovectors with tumor homing mesenchymal stem cells for targeted photodynamic therapy and diagnosis. The inherent versatility of multistage nanovectors permitted the conjugation of photosensitizers to enable precise cell death induction (60%) upon photodynamic therapy, while simultaneously retaining the loading capacity to load various payloads, such as antitumor drugs and diagnostic nanoparticles...
June 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28635661/hypoxic-preconditioning-promotes-the-bioactivities-of-mesenchymal-stem-cells-via-the-hif-1%C3%AE-grp78-akt-axis
#2
Jun Hee Lee, Yeo Min Yoon, Sang Hun Lee
Mesenchymal stem cells (MSC) are ideal materials for stem cell-based therapy. As MSCs reside in hypoxic microenvironments (low oxygen tension of 1% to 7%), several studies have focused on the beneficial effects of hypoxic preconditioning on MSC survival; however, the mechanisms underlying such effects remain unclear. This study aimed to uncover the potential mechanism involving 78-kDa glucose-regulated protein (GRP78) to explain the enhanced MSC bioactivity and survival in hindlimb ischemia. Under hypoxia (2% O₂), the expression of GRP78 was significantly increased via hypoxia-inducible factor (HIF)-1α...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28634226/phostine-pst3-1a-targets-mgat5-and-inhibits-glioblastoma-initiating-cell-invasiveness-and-proliferation
#3
Zahra Hassani, Ali Saleh, Soumaya Turpault, Salim Khiati, Willy Morelle, Jacques Vignon, Jean-Philippe Hugnot, Emmanuelle Uro-Coste, Philippe Legrand, Marcel Delaforge, Séverine Loiseau, Ludovic Clarion, Marc Lecouvey, Jean-Noël Volle, David Virieux, Jean-Luc Pirat, Hugues Duffau, Norbert Bakalara
Glioblastoma multiforme (GBM) is the most common primary malignant brain tumor and accounts for a significant proportion of all primary brain tumors. Median survival after treatment is around 15 months. Remodeling of N-glycans by the N-acetylglucosamine glycosyltransferase (MGAT5) regulates tumoral development. Here, perturbation of MGAT5 enzymatic activity by the small-molecule inhibitor 3-Hydroxy-4,5-bis-benzyloxy-6-benzyloxymethyl-2-phenyl2-oxo-2λ5-[1,2]oxaphosphinane (PST3.1a) restrains GBM growth. In cell based assays it is demonstrated that PST3...
June 20, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28634158/stem-cell-therapy-for-enhancement-of-bone-consolidation-in-distraction-osteogenesis-a-contemporary-review-of-experimental-studies
#4
Y Yang, S Lin, B Wang, W Gu, G Li
OBJECTIVES: Distraction osteogenesis (DO) mobilises bone regenerative potential and avoids the complications of other treatments such as bone graft. The major disadvantage of DO is the length of time required for bone consolidation. Mesenchymal stem cells (MSCs) have been used to promote bone formation with some good results. METHODS: We hereby review the published literature on the use of MSCs in promoting bone consolidation during DO. RESULTS: Studies differed in animal type (mice, rabbit, dog, sheep), bone type (femur, tibia, skull), DO protocols and cell transplantation methods...
June 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28632254/osteogenic-potential-of-gingival-mesenchymal-stem-cells-over-titanium-machined-surfaces
#5
Julio A Carrion, Junaid Rajani, Mohamed Al Bahrawy, Xiaojun Chan, Tae Jin Kim, Srinivas Myneni, Vincent J Iacono
PURPOSE: To evaluate the biochemical composition of bone nodules deposited by gingival mesenchymal stem cells (GMSCs) over titanium machined surfaces in vitro. MATERIALS AND METHODS: GMSCs were isolated from healthy gingival tissues of patients undergoing crown-lengthening surgical procedures. GMSCs were characterized following the International Society for Cellular Therapy guidelines. After incubation of the GMSCs with titanium discs, osteogenic differentiation was induced for 28 days...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28631900/-experimental-development-and-rationale-for-a-renal-decellularization-protocol-with-subsequent-comprehensive-assessment-of-the-biological-scaffold
#6
P V Glybochko, S N Alekseenko, E A Gubareva, E V Kuevda, A A Basov, A S Sotnichenko, S S Dzhimak, I S Gumenyuk, I Kh Egiev, V N Chechelyan, R Z Nakokhov, O M Lyasota, Yu V Teterin
Chronic renal failure (CRF) is one of the most challenging problems of contemporary medicine. Patients with chronic renal failure usually need renal replacement therapy as either hemodialysis, peritoneal dialysis or a kidney transplant. The latter is the most promising option for end-stage kidney disease. However, the shortage of donor organs, the complexity of their delivery, the difficulty in finding an immunologically compatible donor and the need for lifelong immunosuppression triggered advances in modern tissue engineering...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28630737/mesenchymal-stem-cell-therapy-in-the-treatment-of-hip-osteoarthritis
#7
Rodrigo Mardones, Claudio M Jofré, L Tobar, José J Minguell
This study was performed to investigate the safety and efficacy of the intra-articular infusion of ex vivo expanded autologous bone marrow-derived mesenchymal stem cells (BM-MSC) to a cohort of patients with articular cartilage defects in the hip. The above rationale is sustained by the notion that MSCs express a chondrocyte differential potential and produce extracellular matrix molecules as well as regulatory signals, that may well contribute to cure the function of the damaged hip joint. A cohort of 10 patients with functional and radiological evidences of hip osteoarthritis, either in one or both legs, was included in the study...
July 2017: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/28630630/roles-of-mesenchymal-stem-cells-in-spinal-cord-injury
#8
REVIEW
Jing Qu, Huanxiang Zhang
Spinal cord injury (SCI) represents one of the most complicated and heterogeneous pathological processes of central nervous system (CNS) impairments, which is still beyond functional regeneration. Transplantation of mesenchymal stem cells (MSCs) has been shown to promote the repair of the injured spinal cord tissues in animal models, and therefore, there is much interest in the clinical use of these cells. However, many questions which are essential to improve the therapy effects remain unanswered. For instance, the functional roles and related molecular regulatory mechanisms of MSCs in vivo are not yet completely determined...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28629532/hypaconitine-inhibits-tgf-%C3%AE-1-induced-epithelial-mesenchymal-transition-and-suppresses-adhesion-migration-and-invasion-of-lung-cancer-a549-cells
#9
Hai-Tao Feng, Wen-Wen Zhao, Jin-Jian Lu, Yi-Tao Wang, Xiu-Ping Chen
Epithelial-mesenchymal transition (EMT) has been implicated in tumor invasion and metastasis and provides novel strategies for cancer therapy. Hypaconitine (HpA), a diester-diterpenoid alkaloid isolated from the root of the Aconitum species, exhibits anti-inflammatory, analgesic, and especially, cardiotoxic activities. Here, we reported the anti-metastatic potentials of HpA in transforming growth factor-β1 (TGF-β1)-induced EMT in lung cancer A549 cells. The cytotoxic effect of HpA was determined by MTT assay...
June 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28629288/p53-mutation-and-epigenetic-imprinted-igf2-h19-gene-analysis-in-mesenchymal-stem-cells-derived-from-amniotic-fluid-amnion-endometrium-and-wharton-s-jelly
#10
Tatsanee Phermthai, Puttachart Pokathikorn, Suparat Wichitwiengrat, Sasiprapa Thongbopit, Kittima Tungprasertpol, Suphakde Julavijitphong
Mesenchymal stem cells (MSC) are promising cells for medical therapy. In in vitro expansion, MSC can give rise to progeny with genomic and epigenomic alterations, resulting in senescence, loss terminal differentiation and transformation to cancer. However, MSC genome protects its genetic instability via a guardian function of the P53 tumor suppressor gene and epigenetic balance system during MSC culture. Mutations of P53 and epigenetic alterations have been reported to disrupt the quality and quantity of MSC and initiate tumorigenesis...
June 19, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28629066/glucosamine-modified-polyethylene-glycol-hydrogel-mediated-chondrogenic-differentiation-of-human-mesenchymal-stem-cells
#11
Hang Yao, Jingchen Xue, Qunfang Wang, Renjian Xie, Weichang Li, Sa Liu, Jinglei Cai, Dajiang Qin, Dong-An Wang, Li Ren
Glucosamine (GA) is an important cartilage matrix precursor for the glycosaminoglycan biochemical synthesis, and has positive effects on cartilage regeneration, particularly in osteoarthritis therapy. However, it has not been used as a bioactive group in scaffolds for cartilage repair widely. In this study, we synthesized modified polyethylene glycol (PEG) hydrogel with glucosamine and then encapsulated human bone mesenchymal stem cells (hBMSCs) in the hydrogel to induce the differentiation of hBMSCs into chondrocytes in three-dimensional culture...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28627746/hepatic-perivascular-mesenchymal-stem-cells-with-myogenic-properties
#12
Sudheer Shenoy P, Bipasha Bose
Pericytes are multipotent mesenchymal stem cells (MSCs) located on the walls of blood vessels in various organs and are characterized as CD146(+) cells.. In this study, we have first immunohistochemically detected such pericytes in the perivascular regions of liver from two mouse genotypes namely wild-type (WT) and myostatin null (Mstn(-/-) ). We further isolated such pericytes using sorting as CD146(+) CD34(-) CD56(-) CD45(-) cells. The main finding of this study involve the contrasting -fibrogenic versus myogenic behavior of liver pericytes from WTMstn(-/-) ) mouse respectively...
June 19, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28627637/lentiviral-vector-mediated-co-overexpression-of-vegf-and-bcl-2-improves-mesenchymal-stem-cell-survival-and-enhances-paracrine-effects-in%C3%A2-vitro
#13
Xiaobin Ni, Caiwen Ou, Jingbin Guo, Bei Liu, Jianwu Zhang, Zhiye Wu, Hekai Li, Minsheng Chen
Mesenchymal stem cell (MSC) transplantation has emerged as a promising therapy for ischemic heart disease; however, the low survival rate of transplanted cells limits their therapeutic efficacy. The aim of this study was to investigate whether the dual genetic modification of vascular endothelial growth factor (VEGF) and B‑cell lymphoma‑2 (Bcl‑2) confers a higher expression level of the target genes, better survival and a stronger paracrine effect in MSCs in an adverse environment than the modification of the individual genes...
June 12, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28626368/crosstalk-between-stem-and-progenitor-cellular-mediators-with-special-emphasis-on-vasculogenesis
#14
REVIEW
Rokhsareh Rohban, Barbara Prietl, Thomas R Pieber
The cellular components and molecular processes of signaling during vasculogenesis have been investigated for decades. Considerable efforts have been made to unravel regulatory mechanisms of vasculogenesis through crosstalk between vasculogenic playmakers located in the vascular niche, namely hematopoietic stem cells, endothelial progenitor cells, and mesenchymal stem and progenitor cells. Recent studies have increased the knowledge about signaling events within vascular microenvironment that leads to vasculogenesis...
June 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/28625316/mesenchymal-stem-cell-based-therapy-as-a-new-horizon-for-kidney-injuries
#15
REVIEW
Amaneh Mohammadi Roushandeh, Marzie Bahadori, Mehryar Habibi Roudkenar
Today, the prevalence of kidney diseases is increasing around the world, but there has still been no effective medical treatment. The therapeutic choices are confined to supportive cares and preventive strategies. Currently, mesenchymal stem cells (MSCs)-based cell therapy was proposed for the treatment of kidney injuries. However, after the transplantation of MSCs, they are exposed to masses of cytotoxic factors involving an inflammatory cytokine storm, a nutritionally-poor hypoxic environment and oxidative stresses that finally lead to minimize the efficacy of MSCs based cell therapy...
February 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/28624993/cancer-stem-cell-marker-glycosylation-nature-function-and-significance
#16
REVIEW
Brody W Mallard, Joe Tiralongo
Glycans are essential for the maintenance of normal biological function, with alterations in glycan expression being a hallmark of cancer. Cancer stem cells (CSCs) are a subset of cells within a tumour capable of self-renewal, cellular differentiation and resistances to conventional therapies. As is the case with stem cells, marker proteins present on the cell surface are frequently used to identify and enrich CSCs, with the expression of these markers statistical correlating with the likelihood of cancer recurrence and overall patient survival...
June 17, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/28624450/%C3%AE-elemene-inhibits-tumor-promoting-effect-of-m2-macrophages-in-lung-cancer
#17
Xiaomu Yu, Maoyi Xu, Na Li, Zongjuan Li, Hongye Li, Shujuan Shao, Kun Zou, Lijuan Zou
Macrophages in tumor are mostly M2-polarized and have been reported to promote tumorigenesis, which are also defined as tumor-associated macrophages (TAMs). β-elemene has therapeutic effects against several cancers, however, it remains unknown whether β-elemene could inhibit cancer by targeting TAMs. Herein, we examined the effect of β-elemene on macrophages to elucidate a novel mechanism of β-elemene in tumor therapy. We showed that the conditioned medium of M2 macrophages promoted lung cancer cells to migration, invasion and epithelial mesenchymal transition, which could be inhibited by β-elemene...
June 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28622695/mir-23a-promotes-tgf-%C3%AE-1-induced-emt-and-tumor-metastasis-in-breast-cancer-cells-by-directly-targeting-cdh1-and-activating-wnt-%C3%AE-catenin-signaling
#18
Fei Ma, Wenjie Li, Chunxiao Liu, Wei Li, Haining Yu, Bo Lei, Yanlv Ren, Zhigao Li, Da Pang, Cheng Qian
TGF-β1-induced epithelial-mesenchymal transition (EMT) has been proved to be associated with metastasis of breast cancer cells. We attempted to detect a novel mechanism that microRNAs mediated the TGF-β1-induced EMT in the process of breast cancer metastasis. Here we reported that the expression of miR-23a was higher in breast cancer cells with high metastasis ability and patients with lymph node metastasis and the treatment of TGF-β1 significantly upregulated the expression of miR-23a in breast cancer cells...
June 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28622184/does-age-influence-the-efficacy-of-demineralized-bone-matrix-enriched-with-concentrated-bone-marrow-aspirate-in-lumbar-fusions
#19
Remi M Ajiboye, Mark A Eckardt, Jason T Hamamoto, Akshay Sharma, Adam Z Khan, Jeffrey C Wang
STUDY DESIGN: Retrospective study. OBJECTIVE: Evaluate the effect of age on the efficacy of allograft/demineralized bone matrix (DBM) enriched with concentrated bone marrow aspirate (BMA) in posterolateral lumbar fusions (PLFs). SUMMARY OF BACKGROUND DATA: Cell-based therapies such as concentrated BMA have been developed as a potential alternative to iliac crest bone graft (ICBG). BMA contains mesenchymal stem cells (MSCs) and growth factors that can confer osteogenic and osteoinductive potential to osteoconductive scaffolds such as DBM/allograft...
June 15, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28621688/radioresistance-of-mesenchymal-glioblastoma-initiating-cells-correlates-with-patient-outcome-and-is-associated-with-activation-of-inflammatory-program
#20
Elisabetta Stanzani, Fina Martínez-Soler, Teresa Martín Mateos, Noemi Vidal, Alberto Villanueva, Miquel Angel Pujana, Jordi Serra-Musach, Núria de la Iglesia, Pepita Giménez-Bonafé, Avelina Tortosa
Glioblastoma (GBM) still remains an incurable disease being radiotherapy (RT) the mainstay treatment. Glioblastoma intra-tumoral heterogeneity and Glioblastoma-Initiating Cells (GICs) challenge the design of effective therapies. We investigated GICs and non-GICs response to RT in a paired in-vitro model and addressed molecular programs activated in GICs after RT. Established GICs heterogeneously expressed several GICs markers and displayed a mesenchymal signature. Upon fractionated RT, GICs reported higher radioresistance compared to non-GICs and showed lower α- and β-values, according to the Linear Quadratic Model interpretation of the survival curves...
June 3, 2017: Oncotarget
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