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Sharma R, Prakash S, Jain A, Pahwa D, Kalra J. Maternal and neonatal variables affecting CD34+ cell count in the umbilical cord blood. J Appl Hematol 2022. [DOI: 10.4103/joah.joah_68_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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2
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Smaldone G, Coppola L, Incoronato M, Parasole R, Ripaldi M, Vitagliano L, Mirabelli P, Salvatore M. KCTD15 Protein Expression in Peripheral Blood and Acute Myeloid Leukemia. Diagnostics (Basel) 2020; 10:diagnostics10060371. [PMID: 32512747 PMCID: PMC7345863 DOI: 10.3390/diagnostics10060371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/22/2020] [Accepted: 06/02/2020] [Indexed: 12/24/2022] Open
Abstract
Leukocytes are major cellular components of the inflammatory and immune response systems. After their generation in the bone marrow from hematopoietic stem cells, they maturate as granulocytes (neutrophils, eosinophils, and basophils), monocytes, and lymphocytes. The abnormal accumulation and proliferation of immature blood cells (blasts) lead to severe and widespread diseases such as leukemia. We have recently shown that KCTD15, a member of the potassium channel tetramerization domain containing protein family (KCTD), is remarkably upregulated in leukemic B-cells. Here, we extend our investigation by monitoring the KCTD15 expression levels in circulating lymphocytes, monocytes, and granulocytes, as well as in leukemia cells. Significant differences in the expression level of KCTD15 were detected in normal lymphocytes, monocytes, and granulocytes. Interestingly, we also found overexpression of the protein following leukemic transformation in the case of myeloid cell lineage. Indeed, KCTD15 was found to be upregulated in K562 and NB4 cells, as well as in HL-60 cell lines. This in vitro finding was corroborated by the analysis of KCTD15 mRNA of acute myeloid leukemia (AML) patients reported in the Microarray Innovations in Leukemia (MILE) dataset. Collectively, the present data open interesting perspectives for understanding the maturation process of leukocytes and for the diagnosis/therapy of acute leukemias.
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Affiliation(s)
- Giovanni Smaldone
- IRCCS SDN, Napoli, Via E. Gianturco 113, 80143 Naples, Italy; (G.S.); (L.C.); (M.I.); (M.S.)
| | - Luigi Coppola
- IRCCS SDN, Napoli, Via E. Gianturco 113, 80143 Naples, Italy; (G.S.); (L.C.); (M.I.); (M.S.)
| | - Mariarosaria Incoronato
- IRCCS SDN, Napoli, Via E. Gianturco 113, 80143 Naples, Italy; (G.S.); (L.C.); (M.I.); (M.S.)
| | - Rosanna Parasole
- Department of Pediatric Hematology-Oncology, Santobono-Pausilipon Hospital, 80129 Naples, Italy; (R.P.); (M.R.)
| | - Mimmo Ripaldi
- Department of Pediatric Hematology-Oncology, Santobono-Pausilipon Hospital, 80129 Naples, Italy; (R.P.); (M.R.)
| | - Luigi Vitagliano
- Institute of Biostructures and Bioimaging, C.N.R., 80134 Napoli, Italy
- Correspondence: (L.V.); (P.M.)
| | - Peppino Mirabelli
- IRCCS SDN, Napoli, Via E. Gianturco 113, 80143 Naples, Italy; (G.S.); (L.C.); (M.I.); (M.S.)
- Correspondence: (L.V.); (P.M.)
| | - Marco Salvatore
- IRCCS SDN, Napoli, Via E. Gianturco 113, 80143 Naples, Italy; (G.S.); (L.C.); (M.I.); (M.S.)
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Ma K, Ma P, Lu H, Liu S, Cao Q. Fentanyl Suppresses the Survival of CD4+T Cells Isolated from Human Umbilical Cord Blood through Inhibition of IKKs-mediated NF-κB Activation. Scand J Immunol 2017; 85:343-349. [PMID: 28199730 DOI: 10.1111/sji.12538] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 02/09/2017] [Indexed: 11/29/2022]
Affiliation(s)
- K. Ma
- Department of Anesthesiology; The Fourth Hospital of Shijiazhuang; Shijiazhuang China
| | - P. Ma
- Department of Anesthesiology; The First Hospital of Shijiazhuang; Shijiazhuang China
| | - H. Lu
- ICU; The Second Hospital of Hebei Medical University; Shijiazhuang China
| | - S. Liu
- Department of Anesthesiology; The Fourth Hospital of Shijiazhuang; Shijiazhuang China
| | - Q. Cao
- The Fourth Hospital of Shijiazhuang; Shijiazhuang China
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Mok PL, Leow SN, Koh AEH, Mohd Nizam HH, Ding SLS, Luu C, Ruhaslizan R, Wong HS, Halim WHWA, Ng MH, Idrus RBH, Chowdhury SR, Bastion CML, Subbiah SK, Higuchi A, Alarfaj AA, Then KY. Micro-Computed Tomography Detection of Gold Nanoparticle-Labelled Mesenchymal Stem Cells in the Rat Subretinal Layer. Int J Mol Sci 2017; 18:ijms18020345. [PMID: 28208719 PMCID: PMC5343880 DOI: 10.3390/ijms18020345] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/09/2016] [Accepted: 12/21/2016] [Indexed: 12/13/2022] Open
Abstract
Mesenchymal stem cells are widely used in many pre-clinical and clinical settings. Despite advances in molecular technology; the migration and homing activities of these cells in in vivo systems are not well understood. Labelling mesenchymal stem cells with gold nanoparticles has no cytotoxic effect and may offer suitable indications for stem cell tracking. Here, we report a simple protocol to label mesenchymal stem cells using 80 nm gold nanoparticles. Once the cells and particles were incubated together for 24 h, the labelled products were injected into the rat subretinal layer. Micro-computed tomography was then conducted on the 15th and 30th day post-injection to track the movement of these cells, as visualized by an area of hyperdensity from the coronal section images of the rat head. In addition, we confirmed the cellular uptake of the gold nanoparticles by the mesenchymal stem cells using transmission electron microscopy. As opposed to other methods, the current protocol provides a simple, less labour-intensive and more efficient labelling mechanism for real-time cell tracking. Finally, we discuss the potential manipulations of gold nanoparticles in stem cells for cell replacement and cancer therapy in ocular disorders or diseases.
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Affiliation(s)
- Pooi Ling Mok
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Genetics and Regenerative Medicine Research Center, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Sue Ngein Leow
- Department of Ophthalmology, Hospital Sultanah Aminah, 80100 Johor Bahru, Johor, Malaysia.
| | - Avin Ee-Hwan Koh
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Hairul Harun Mohd Nizam
- Department of Ophthalmology, Faculty of Medicine, UKM Medical Center, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Suet Lee Shirley Ding
- Department of Biomedical Science, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Chi Luu
- Centre for Eye Research Australia, Royal Victorian Eye & Ear Hospital, Melbourne 3002, Australia.
- Department of Surgery (Ophthalmology), The University of Melbourne, Melbourne 3002, Australia.
| | - Raduan Ruhaslizan
- Department of Ophthalmology, Faculty of Medicine, UKM Medical Center, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Hon Seng Wong
- Department of Ophthalmology, Faculty of Medicine, UKM Medical Center, 56000 Cheras, Kuala Lumpur, Malaysia.
| | | | - Min Hwei Ng
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Center, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Ruszymah Binti Hj Idrus
- Department of Physiology, Universiti Kebangsaan Malaysia Medical Center, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Shiplu Roy Chowdhury
- Tissue Engineering Centre, Universiti Kebangsaan Malaysia Medical Center, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Catherine Mae-Lynn Bastion
- Department of Ophthalmology, Faculty of Medicine, UKM Medical Center, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Suresh Kumar Subbiah
- Genetics and Regenerative Medicine Research Center, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
- Department of Medical Microbiology and Parasitology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
| | - Akon Higuchi
- Department of Chemical and Materials Engineering, National Central University, Jhong-li, Taoyuan 32001, Taiwan.
- Department of Reproduction, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan.
- Department of Botany and Microbiology, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Abdullah A Alarfaj
- Department of Botany and Microbiology, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Kong Yong Then
- Department of Ophthalmology, Faculty of Medicine, UKM Medical Center, 56000 Cheras, Kuala Lumpur, Malaysia.
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Douaisi M, Resop RS, Nagasawa M, Craft J, Jamieson BD, Blom B, Uittenbogaart CH. CD31, a Valuable Marker to Identify Early and Late Stages of T Cell Differentiation in the Human Thymus. J Immunol 2017; 198:2310-2319. [PMID: 28159903 DOI: 10.4049/jimmunol.1500350] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 01/06/2017] [Indexed: 12/21/2022]
Abstract
Although CD31 expression on human thymocytes has been reported, a detailed analysis of CD31 expression at various stages of T cell development in the human thymus is missing. In this study, we provide a global picture of the evolution of CD31 expression from the CD34+ hematopoietic precursor to the CD45RA+ mature CD4+ and CD8+ single-positive (SP) T cells. Using nine-color flow cytometry, we show that CD31 is highly expressed on CD34+ progenitors and stays high until the early double-positive stage (CD3-CD4+CD8α+β-). After β-selection, CD31 expression levels become low to undetectable. CD31 expression then increases and peaks on CD3highCD4+CD8+ double-positive thymocytes. However, following positive selection, CD31 expression differs dramatically between CD4+ and CD8+ lineages: homogeneously high on CD8 SP but lower or negative on CD4 SP cells, including a subset of CD45RA+CD31- mature CD4+ thymocytes. CD31 expression on TCRγδ thymocytes is very similar to that of CD4 SP cells. Remarkably, there is a substantial subset of semimature (CD45RA-) CD4 SP thymocytes that lack CD31 expression. Moreover, FOXP3+ and ICOS+ cells are overrepresented in this CD31- subpopulation. Despite this CD31-CD45RA- subpopulation, most egress-capable mature CD45RA+ CD4 SP thymocytes express CD31. The variations in CD31 expression appear to coincide with three major selection processes occurring during thymopoiesis: β-selection, positive selection, and negative selection. Considering the ability of CD31 to modulate the TCR's activation threshold via the recruitment of tyrosine phosphatases, our results suggest a significant role for CD31 during T cell development.
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Affiliation(s)
- Marc Douaisi
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, CA 90095
| | - Rachel S Resop
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, CA 90095
| | - Maho Nagasawa
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands
| | - Joshua Craft
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, CA 90095
| | - Beth D Jamieson
- Department of Medicine, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095.,University of California Los Angeles Jonsson Comprehensive Cancer Center, Los Angeles, CA 90024.,University of California Los Angeles AIDS Institute and Center for AIDS Research, Los Angeles, CA 90095; and
| | - Bianca Blom
- Department of Experimental Immunology, Academic Medical Center, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands
| | - Christel H Uittenbogaart
- Department of Microbiology, Immunology and Molecular Genetics, University of California Los Angeles, Los Angeles, CA 90095; .,University of California Los Angeles Jonsson Comprehensive Cancer Center, Los Angeles, CA 90024.,University of California Los Angeles AIDS Institute and Center for AIDS Research, Los Angeles, CA 90095; and.,Department of Pediatrics, David Geffen School of Medicine at University of California Los Angeles, Los Angeles, CA 90095
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Dhoke NR, Kalabathula E, Kaushik K, Geesala R, Sravani B, Das A. Histone deacetylases differentially regulate the proliferative phenotype of mouse bone marrow stromal and hematopoietic stem/progenitor cells. Stem Cell Res 2016; 17:170-80. [DOI: 10.1016/j.scr.2016.07.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 06/27/2016] [Accepted: 07/01/2016] [Indexed: 01/22/2023] Open
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Podestà M, Bruschettini M, Cossu C, Sabatini F, Dagnino M, Romantsik O, Spaggiari GM, Ramenghi LA, Frassoni F. Preterm Cord Blood Contains a Higher Proportion of Immature Hematopoietic Progenitors Compared to Term Samples. PLoS One 2015; 10:e0138680. [PMID: 26417990 DOI: 10.1371/journal.pone.0138680] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 09/01/2015] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Cord blood contains high number of hematopoietic cells that after birth disappear. In this paper we have studied the functional properties of the umbilical cord blood progenitor cells collected from term and preterm neonates to establish whether quantitative and/or qualitative differences exist between the two groups. METHODS AND RESULTS Our results indicate that the percentage of total CD34+ cells was significantly higher in preterm infants compared to full term: 0.61% (range 0.15-4.8) vs 0.3% (0.032-2.23) p = 0.0001 and in neonates <32 weeks of gestational age (GA) compared to those ≥32 wks GA: 0.95% (range 0.18-4.8) and 0.36% (0.15-3.2) respectively p = 0.0025. The majority of CD34+ cells co-expressed CD71 antigen (p<0.05 preterm vs term) and grew in vitro large BFU-E, mostly in the second generation. The subpopulations CD34+CD38- and CD34+CD45- resulted more represented in preterm samples compared to term, conversely, Side Population (SP) did not show any difference between the two group. The absolute number of preterm colonies (CFCs/10microL) resulted higher compared to term (p = 0.004) and these progenitors were able to grow until the third generation maintaining an higher proportion of CD34+ cells (p = 0.0017). The number of colony also inversely correlated with the gestational age (Pearson r = -0.3001 p<0.0168). CONCLUSIONS We found no differences in the isolation and expansion capacity of Endothelial Colony Forming Cells (ECFCs) from cord blood of term and preterm neonates: both groups grew in vitro large number of endothelial cells until the third generation and showed a transitional phenotype between mesenchymal stem cells and endothelial progenitors (CD73, CD31, CD34 and CD144)The presence, in the cord blood of preterm babies, of high number of immature hematopoietic progenitors and endothelial/mesenchymal stem cells with high proliferative potential makes this tissue an important source of cells for developing new cells therapies.
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Zhang Q, Wang L, Luo C, Shi Z, Cheng X, Zhang Z, Yang Y, Zhang Y. Phenotypic and functional characterization of cytokine-induced killer cells derived from preterm and term infant cord blood. Oncol Rep 2014; 32:2244-52. [PMID: 25176036 DOI: 10.3892/or.2014.3457] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 07/24/2014] [Indexed: 11/06/2022] Open
Abstract
Cord blood has gradually become an important source for hematopoietic stem cell transplantation (HSCT) in the human, particularly in pediatric patients. Adoptive cellular immunotherapy of patients with hematologic malignancies after umbilical cord blood transplant is crucial. Cytokine‑induced killer (CIK) cells derived from cord blood are a new type of antitumor immune effector cells in tumor prevention and treatment and have increasingly attracted the attention of researchers. On the other hand, it has been suggested that preterm infant cord blood retains an early differentiation phenotype suitable for immunotherapy. Therefore, we determined the phenotypic and functional characterization of CIK cells derived from preterm infant cord blood (PCB-CIK) compared with CIK cells from term infant cord blood (TCB-CIK). Twenty cord blood samples were collected and classified into two groups based on gestational age. Cord blood mononuclear cells (CBMCs) were isolated, cultured and induced to CIK cells in vitro. We used flow cytometry to detect cell surface markers, FlowJo software to analyze the proliferation profile and intracellular staining to test the secretion of cytokines. Finally, we evaluated the antitumor activity of CIK cells against K562 in vitro. Compared with TCB-CIK, PCB-CIK cells demonstrated faster proliferation and higher expression of activated cell surface markers. The secretion of IL-10 was lower in PCB-CIK cells while the expression of perforin and CD107a had no significant difference between the two cell groups. PCB-CIK cells exhibited a high proliferation rate while the cytotoxic activity had no difference between the PCB-CIK and TCB-CIK cells. Hence preterm infant cord blood may be a potential source for immunotherapy.
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Affiliation(s)
- Qian Zhang
- Department of Neonatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Lili Wang
- Department of Neonatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Chenghan Luo
- Department of Neonatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Zanyang Shi
- Department of Neonatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Xinru Cheng
- Department of Neonatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Zhen Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Yi Yang
- Newborn Disease Key Laboratory of the Ministry of Health, The Children's Hospital Affiliated to Fudan University, Shanghai 201102, P.R. China
| | - Yi Zhang
- Biotherapy Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Sousa BR, Parreira RC, Fonseca EA, Amaya MJ, Tonelli FMP, Lacerda SMSN, Lalwani P, Santos AK, Gomes KN, Ulrich H, Kihara AH, Resende RR. Human adult stem cells from diverse origins: An overview from multiparametric immunophenotyping to clinical applications. Cytometry A 2013; 85:43-77. [DOI: 10.1002/cyto.a.22402] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/27/2013] [Accepted: 10/01/2013] [Indexed: 02/06/2023]
Affiliation(s)
- Bruna R. Sousa
- Department of Biochemistry and Immunology, Cell Signaling and Nanobiotechnology Laboratory; Federal University of Minas Gerais; Belo Horizonte MG Brazil
| | - Ricardo C. Parreira
- Department of Biochemistry and Immunology, Cell Signaling and Nanobiotechnology Laboratory; Federal University of Minas Gerais; Belo Horizonte MG Brazil
| | - Emerson A Fonseca
- Department of Biochemistry and Immunology, Cell Signaling and Nanobiotechnology Laboratory; Federal University of Minas Gerais; Belo Horizonte MG Brazil
| | - Maria J. Amaya
- Department of Internal Medicine, Section of Digestive Diseases; Yale University School of Medicine; New Haven Connecticut
| | - Fernanda M. P. Tonelli
- Department of Biochemistry and Immunology, Cell Signaling and Nanobiotechnology Laboratory; Federal University of Minas Gerais; Belo Horizonte MG Brazil
| | - Samyra M. S. N. Lacerda
- Department of Biochemistry and Immunology, Cell Signaling and Nanobiotechnology Laboratory; Federal University of Minas Gerais; Belo Horizonte MG Brazil
| | - Pritesh Lalwani
- Faculdade de Ciências Farmacêuticas; Universidade Federal do Amazonas; Manaus AM Brazil
| | - Anderson K. Santos
- Department of Biochemistry and Immunology, Cell Signaling and Nanobiotechnology Laboratory; Federal University of Minas Gerais; Belo Horizonte MG Brazil
| | - Katia N. Gomes
- Department of Biochemistry and Immunology, Cell Signaling and Nanobiotechnology Laboratory; Federal University of Minas Gerais; Belo Horizonte MG Brazil
| | - Henning Ulrich
- Departamento de Bioquímica; Instituto de Química, Universidade de São Paulo; São Paulo SP Brazil
| | - Alexandre H. Kihara
- Núcleo de Cognição e Sistemas Complexos, Centro de Matemática, Computação e Cognição; Universidade Federal do ABC; Santo André SP Brazil
| | - Rodrigo R. Resende
- Department of Biochemistry and Immunology, Cell Signaling and Nanobiotechnology Laboratory; Federal University of Minas Gerais; Belo Horizonte MG Brazil
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Affiliation(s)
- Vera S Donnenberg
- Department of Cardiothoracic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania; McGowan Institute of Regenerative Medicine, Pittsburgh, Pennsylvania
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Scheible K, Secor-Socha S, Wightman T, Wang H, Mariani TJ, Topham DJ, Pryhuber G, Quataert S. Stability of T cell phenotype and functional assays following heparinized umbilical cord blood collection. Cytometry A 2012; 81:937-49. [PMID: 23027690 DOI: 10.1002/cyto.a.22203] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Revised: 08/14/2012] [Accepted: 08/21/2012] [Indexed: 11/06/2022]
Abstract
Umbilical cord blood has been used for a wide variety of immunologic investigations including assessments of developmental perturbations by antenatal exposures. Recent advances in multiparameter flow cytometry have allowed finer characterization of lymphocyte phenotype and function, revealing important differences between the fetal and adult immune systems. The degree of variability between human subjects confounds the ability to draw firm conclusions. Artifacts resulting from processing techniques exacerbate this variability. The unpredictable nature of deliveries, especially of premature infants, makes it difficult to control variables such as timing of umbilical cord mononuclear cell (UCMC) isolation and method of collection. Additionally, in multicenter studies dependent on central processing, delays are inevitable. However, little available literature describes systematic testing of the degree to which processing variations affect UCMC phenotype and function. Using multiparameter flow cytometry, we tested the effect of collection technique and length of time prior to UCMC isolation on T cell phenotype and function, with the goal of creating a standardized operating procedure for a multicenter investigation. The study also provides a benchmark data set including extensive surface and functional phenotyping of umbilical cord T cells. UCMC isolation delay of up to 24 h produced similar T cell phenotype and function as tested by in vitro SEB stimulation. There were few statistically significant differences between time points based on data medians. We conclude that, for the purpose of immunologic investigations, a 24-h time delay from sample collection to mononuclear cell isolation does not introduce a significant degree of variation in T cell phenotype and function when adhering to strict standard operating procedures.
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Affiliation(s)
- Kristin Scheible
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY 14642, USA.
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Preijers FW, Huys E, Leenders M, Nieto L, Gautherot E, Moshaver B. The new violet laser dye, Krome Orange, allows an optimal polychromatic immunophenotyping based on CD45-KO gating. J Immunol Methods 2011; 372:42-51. [DOI: 10.1016/j.jim.2011.06.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 06/10/2011] [Accepted: 06/24/2011] [Indexed: 12/18/2022]
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13
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Iovine B, Iannella ML, Nocella F, Pricolo MR, Bevilacqua MA. Carnosine inhibits KRAS-mediated HCT116 proliferation by affecting ATP and ROS production. Cancer Lett 2011; 315:122-8. [PMID: 22137144 DOI: 10.1016/j.canlet.2011.07.021] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 07/13/2011] [Accepted: 07/20/2011] [Indexed: 10/17/2022]
Abstract
Carnosine is a natural dipeptide that has generated particular interest for its antioxidant, anti-aging and especially for its antiproliferative properties. In this study, we demonstrate that carnosine inhibits the proliferation of human HCT116 colon cancer cells. In this cell line, the activating KRAS mutation induces mitochondrial ROS, the signaling molecules for cell proliferation. We observed that 50-100 mM carnosine decreases ATP and ROS concentration and induces cell cycle arrest in G1 phase. In HCT116 cells these effects are related to decreased ERK1/2 phosphorylation and increased p21waf1 protein. Our findings support the concept that carnosine could inhibit HCT116 cell growth via its antioxidant activity and its ability to affect glycolysis.
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Affiliation(s)
- Barbara Iovine
- Dipartimento di Biochimica e Biotecnologie Mediche, Università di Napoli "Federico II", 80131 Napoli, Italy
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