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Bajhan E, Mansoori B, Mohammadi A, Shanehbandi D, Khaze Shahgoli V, Baghbani E, Hajiasgharzadeh K, Baradaran B. MicroRNA-143 inhibits proliferation and migration of prostate cancer cells. Arch Physiol Biochem 2022; 128:1323-1329. [PMID: 32449873 DOI: 10.1080/13813455.2020.1769678] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background: Prostate cancer (PC) is one of the most prevalent types of malignancies in males. Here, we replaced the miRNA-143 in PC cells by using a vector-based miRNA-143 transfection approach.Materials and methods: The miRNA-143 vector was transfected into the cells and qRT-PCR was applied to assess the expression of target genes in PC3 cells. Also, the MTT, scratch wound-healing, and DAPI staining assays were done to assess the proliferation, migration, and apoptosis of the cells, respectively.Results: The findings of the qRT-PCR determined the enhanced expression of miRNA-143 and other cancer-associated genes. The MTT and wound-healing assays revealed the proliferation and migration reduction in the transfected cells in comparison to control cells that contain an empty vector.Conclusion: The miRNA-143 has a significant impact on cell growth and migration during PC metastasis, and it may be a promising candidate for molecular therapies of PC.
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Affiliation(s)
- Elshan Bajhan
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Mansoori
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Ali Mohammadi
- Department of Cancer and Inflammation Research, Institute for Molecular Medicine, University of Southern Denmark, Odense, Denmark
| | - Dariush Shanehbandi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Elham Baghbani
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Immunology, Tabriz University of Medical Sciences, Tabriz, Iran
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Kersting S, Janot-Matuschek MS, Schnitzler C, Chourio Barboza DE, Uhl W, Mittelkötter U. GIST: Correlation of risk classifications and outcome. J Med Life 2022; 15:932-943. [PMID: 36188659 PMCID: PMC9514809 DOI: 10.25122/jml-2021-0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 06/22/2022] [Indexed: 11/05/2022] Open
Abstract
In clinical practice, there are often discrepancies between the oncological prognosis of gastrointestinal stromal tumors (GIST) and the actual clinical course. This study aimed to check with our collective how reliably the current classifications (Miettinen, Fletcher) predict the prognosis of GIST and to evaluate whether an extension of the classifications by the parameter proliferation activity could make sense. This prospective study enrolled 58 patients who underwent surgery on GIST from 01/2006 to 12/2016. The postoperative course (curation, recurrence, progress) was correlated with the identified risk classification and the proliferative activity. Coincidences with other tumors were strikingly common in patients with GIST (43%). Based on the risk group assignment of GIST, no assessment of the probability of the occurrence of second neoplasia could be derived. Individual patients were under- or over-graduated concerning the assessment of biological behavior based on the standard risk classifications. The inclusion of proliferative activity did not allow for a more precise predictive power - neither to the risk of recurrence and metastasis nor to the development of a second neoplasia. The study showed that there is currently no parameter or logarithm that reliably predicts the biological behavior of GIST. Due to the frequency of coincidence of second neoplasia and (rare) distant metastases, for everyday clinical practice, appropriate staging diagnostic and regular follow-up care should also be used for benign GIST.
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Affiliation(s)
- Sabine Kersting
- Department of General Surgery, Christliches Klinikum Unna Mitte, Unna, Germany,Corresponding Author: Sabine Kersting, Department of General Surgery, Christliches Klinikum Unna Mitte, Unna, Germany. E-mail:
| | | | - Carina Schnitzler
- Department of General Surgery, Christliches Klinikum Unna Mitte, Unna, Germany
| | | | - Waldemar Uhl
- Department of General Surgery, St. Josef-Hospital Bochum, Ruhr-University Bochum, Bochum, Germany
| | - Ulrich Mittelkötter
- Department of General Surgery, Christliches Klinikum Unna Mitte, Unna, Germany
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Cai P, Cai Q, He F, Huang Y, Tian C, Wu X, Wang C, Xiao B. Flexibility of Microcystis Overwintering Strategy in Response to Winter Temperatures. Microorganisms 2021; 9:microorganisms9112278. [PMID: 34835404 PMCID: PMC8619829 DOI: 10.3390/microorganisms9112278] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 09/27/2021] [Revised: 10/28/2021] [Accepted: 10/28/2021] [Indexed: 11/17/2022] Open
Abstract
Microcystis is one of the most common bloom-forming cyanobacteria in freshwater ecosystems throughout the world. However, the underlying life history mechanism and distinct temporal dynamics (inter- and intra-annual) of Microcystis populations in different geographical locations and lakes remain unclear but is critical information needed for the development of robust prediction, prevention, and management strategies. Perennial observations indicate that temperature may be the key factor driving differences in the overwintering strategy. This study quantitatively compared the overwintering abilities of Microcystis aeruginosa (Ma) in both the water column and sediments under a gradient of overwintering water temperatures (i.e., 4, 8, and 12 °C) using the death and proliferation rates of Ma. The results show that the dynamics of the Microcystis overwintering strategy were significantly affected by water temperatures. At 4 and 8 °C, Ma mainly overwintered in sediments and disappeared from the water column after exposure to low temperatures for a long duration, although some Microcystis cells can overwinter in the water column for short durations at low temperatures. At 12 °C, most Ma can overwinter in the water column. Rising temperatures promoted the proliferation of pelagic Ma but accelerated the death of benthic Ma. With warmer winter temperatures, pelagic Microcystis might become the primary inoculum sources in the spring. Our study highlights the overwintering strategy flexibility in explaining temporal dynamics differences of Microcystis among in geographical locations and should be considered in the context of global warming.
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Affiliation(s)
- Pei Cai
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (P.C.); (Q.C.); (C.T.); (X.W.); (B.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qijia Cai
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (P.C.); (Q.C.); (C.T.); (X.W.); (B.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Feng He
- Research Academy of Plateau Lake Dianchi, Kunming 671500, China; (F.H.); (Y.H.)
| | - Yuhong Huang
- Research Academy of Plateau Lake Dianchi, Kunming 671500, China; (F.H.); (Y.H.)
| | - Cuicui Tian
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (P.C.); (Q.C.); (C.T.); (X.W.); (B.X.)
| | - Xingqiang Wu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (P.C.); (Q.C.); (C.T.); (X.W.); (B.X.)
| | - Chunbo Wang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (P.C.); (Q.C.); (C.T.); (X.W.); (B.X.)
- Correspondence:
| | - Bangding Xiao
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; (P.C.); (Q.C.); (C.T.); (X.W.); (B.X.)
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Bibbò F, Sorice C, Ferrucci V, Zollo M. Functional Genomics of PRUNE1 in Neurodevelopmental Disorders (NDDs) Tied to Medulloblastoma (MB) and Other Tumors. Front Oncol 2021; 11:758146. [PMID: 34745995 PMCID: PMC8569853 DOI: 10.3389/fonc.2021.758146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 08/13/2021] [Accepted: 09/28/2021] [Indexed: 12/31/2022] Open
Abstract
We analyze the fundamental functions of Prune_1 in brain pathophysiology. We discuss the importance and maintenance of the function of Prune_1 and how its perturbation influences both brain pathological conditions, neurodevelopmental disorder with microcephaly, hypotonia, and variable brain anomalies (NMIHBA; OMIM: 617481), and tumorigenesis of medulloblastoma (MB) with functional correlations to other tumors. A therapeutic view underlying recent discoveries identified small molecules and cell penetrating peptides to impair the interaction of Prune_1 with protein partners (e.g., Nm23-H1), thus further impairing intracellular and extracellular signaling (i.e., canonical Wnt and TGF-β pathways). Identifying the mechanism of action of Prune_1 as responsible for neurodevelopmental disorders (NDDs), we have recognized other genes which are found overexpressed in brain tumors (e.g., MB) with functional implications in neurodevelopmental processes, as mainly linked to changes in mitotic cell cycle processes. Thus, with Prune_1 being a significant target in NDDs, we discuss how its network of action can be dysregulated during brain development, thus generating cancer and metastatic dissemination.
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Affiliation(s)
- Francesca Bibbò
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), ‘Federico II’ University of Naples, Naples, Italy
- CEINGE Biotecnologie Avanzate, Naples, Italy
| | - Carmen Sorice
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), ‘Federico II’ University of Naples, Naples, Italy
- CEINGE Biotecnologie Avanzate, Naples, Italy
| | - Veronica Ferrucci
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), ‘Federico II’ University of Naples, Naples, Italy
- CEINGE Biotecnologie Avanzate, Naples, Italy
| | - Massimo Zollo
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), ‘Federico II’ University of Naples, Naples, Italy
- CEINGE Biotecnologie Avanzate, Naples, Italy
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Ochoa-Albiztegui RE, Sevilimedu V, Horvat JV, Thakur SB, Helbich TH, Trattnig S, Morris EA, Reiner JS, Pinker K. Pharmacokinetic Analysis of Dynamic Contrast-Enhanced Magnetic Resonance Imaging at 7T for Breast Cancer Diagnosis and Characterization. Cancers (Basel) 2020; 12:E3763. [PMID: 33327532 DOI: 10.3390/cancers12123763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/05/2020] [Accepted: 12/09/2020] [Indexed: 12/21/2022] Open
Abstract
Simple Summary Confirming whether a breast lesion is benign or malignant usually involves an invasive tissue sample with an image-guided breast biopsy, which may cause substantial inconvenience to the patient. The purpose of this study was to investigate whether imaging biomarkers obtained from noninvasive dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) of the breast can help differentiate benign from malignant lesions and characterize breast cancers to the same extent as a biopsy. In a sample of 37 patients with suspicious findings on mammography or ultrasound, we found that the radiologists’ diagnostic accuracy was improved when subjective Breast Imaging-Reporting and Data System (BI-RADS) evaluation was augmented with the use of pharmacokinetic markers. This study serves as a starting point for future collaborative research with the potential of providing valuable noninvasive tools for improved breast cancer diagnosis. Abstract The purpose of this study was to investigate whether ultra-high-field dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) of the breast at 7T using quantitative pharmacokinetic (PK) analysis can differentiate between benign and malignant breast tumors for improved breast cancer diagnosis and to predict molecular subtypes, histologic grade, and proliferation rate in breast cancer. In this prospective study, 37 patients with 43 lesions suspicious on mammography or ultrasound underwent bilateral DCE-MRI of the breast at 7T. PK parameters (KTrans, kep, Ve) were evaluated with two region of interest (ROI) approaches (2D whole-tumor ROI or 2D 10 mm standardized ROI) manually drawn by two readers (senior reader, R1, and R2) independently. Histopathology served as the reference standard. PK parameters differentiated benign and malignant lesions (n = 16, 27, respectively) with good accuracy (AUCs = 0.655–0.762). The addition of quantitative PK analysis to subjective BI-RADS classification improved breast cancer detection from 88.4% to 97.7% for R1 and 86.04% to 97.67% for R2. Different ROI approaches did not influence diagnostic accuracy for both readers. Except for KTrans for whole-tumor ROI for R2, none of the PK parameters were valuable to predict molecular subtypes, histologic grade, or proliferation rate in breast cancer. In conclusion, PK-enhanced BI-RADS is promising for the noninvasive differentiation of benign and malignant breast tumors.
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Haddouti EM, Randau TM, Hilgers C, Masson W, Pflugmacher R, Burger C, Gravius S, Schildberg FA. Vertebral Bone Marrow-Derived Mesenchymal Stromal Cells from Osteoporotic and Healthy Patients Possess Similar Differentiation Properties In Vitro. Int J Mol Sci 2020; 21:E8309. [PMID: 33167522 DOI: 10.3390/ijms21218309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/27/2020] [Accepted: 11/04/2020] [Indexed: 02/06/2023] Open
Abstract
Osteoporosis is a disease characterized by low bone mass and an increased risk of fractures. Although several cellular players leading to osteoporosis have been identified, the role of mesenchymal stromal cells (MSC) is still not fully elaborated. The aim of this study was, therefore, to isolate and characterize MSCs from vertebral body of healthy non-osteoporotic and osteoporotic patients, with a particular focus on their osteogenic differentiation potential. Isolated MSCs were characterized by their osteogenic, adipogenic, and chondrogenic differentiation, as well as surface marker expression, proliferation behavior, and immunomodulatory capacity. The mineralization process was confirmed using Alizarin Red S and alkaline phosphatase (ALP) stains and further evaluated by determining ALP activity, mineral deposition, and free phosphate ion release. MSCs from both healthy and osteoporotic patients showed common fibroblast-like morphology and similar proliferation behavior. They expressed the typical MSC surface markers and possessed immunomodulatory capacity. Both groups demonstrated solid trilineage differentiation potential; osteogenic differentiation was further confirmed by increased ALP activity, deposition of inorganic crystals, phosphate ion release, and expression of osteoblast marker genes. Overall, MSCs from osteoporotic and non-osteoporotic patients showed neither a difference in general MSC features nor in the detailed analysis regarding osteogenic differentiation. These data suggest that vertebral body MSCs from osteoporotic patients were not impaired; rather, they possessed full osteogenic potential compared to MSCs from non-osteoporotic patients.
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Hermans BCM, Derks JL, Moonen L, Habraken CHJ, der Thüsen JV, Hillen LM, Speel EJM, Dingemans AMC. Pulmonary neuroendocrine neoplasms with well differentiated morphology and high proliferative activity: illustrated by a case series and review of the literature. Lung Cancer 2020; 150:152-158. [PMID: 33171403 DOI: 10.1016/j.lungcan.2020.10.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 09/07/2020] [Accepted: 10/16/2020] [Indexed: 01/04/2023]
Abstract
OBJECTIVES Pulmonary neuroendocrine neoplasms (NENs) are subdivided in carcinoids and neuroendocrine carcinomas (small cell lung carcinoma and large cell neuroendocrine carcinoma (LCNEC)), based on the presence of necrosis and mitotic index (MI). However, it is unclear if tumors with well differentiated morphology but high proliferation rate should be regarded as LCNEC or as high grade carcinoids. In previous case series, a longer overall survival then expected in LCNEC has been suggested. We describe 7 of those cases analyzed for pRb expression and overall survival. MATERIAL AND METHODS Cases with well differentiated morphology, but MI > 10/2mm2 and/or Ki-67 proliferation index >20% were selected based on pathology reports of consecutive NENs in our university medical center (Maastricht UMC+, 2007-2018) and confirmed by pathological review. Immunohistochemistry was performed to assess pRb expression. RESULTS Seven stage IV cases were included in this study. Median overall survival was 8 months (95% confidence interval 5-11 months). Cases with well differentiated morphology and preserved pRb expression (4/7) had a median overall survival of 45 months. CONCLUSION A subgroup of pulmonary NENs with well differentiated morphology but high proliferation rate likely exists. pRb staining might be helpful to predict prognosis, but clinical relevance remains to be studied.
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Affiliation(s)
- B C M Hermans
- Department of Pulmonary Diseases, GROW school for Oncology & Developmental Biology, Maastricht University Medical Centre, P.O. Box 5800, 6202 AZ Maastricht, the Netherlands
| | - J L Derks
- Department of Pulmonary Diseases, GROW school for Oncology & Developmental Biology, Maastricht University Medical Centre, P.O. Box 5800, 6202 AZ Maastricht, the Netherlands
| | - L Moonen
- Department of Pathology, GROW school for Oncology & Developmental Biology, Maastricht University Medical Centre, P.O. Box 5800, 6202 AZ Maastricht, the Netherlands
| | - C H J Habraken
- Department of Pulmonary Diseases, GROW school for Oncology & Developmental Biology, Maastricht University Medical Centre, P.O. Box 5800, 6202 AZ Maastricht, the Netherlands
| | - J von der Thüsen
- Department of Pathology, Erasmus Medical Centre, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - L M Hillen
- Department of Pathology, GROW school for Oncology & Developmental Biology, Maastricht University Medical Centre, P.O. Box 5800, 6202 AZ Maastricht, the Netherlands
| | - E J M Speel
- Department of Pathology, GROW school for Oncology & Developmental Biology, Maastricht University Medical Centre, P.O. Box 5800, 6202 AZ Maastricht, the Netherlands
| | - A-M C Dingemans
- Department of Pulmonary Diseases, GROW school for Oncology & Developmental Biology, Maastricht University Medical Centre, P.O. Box 5800, 6202 AZ Maastricht, the Netherlands; Department of Pulmonary Diseases, Erasmus Medical Centre, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands.
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Samiei M, Aghazadeh Z, Abdolahinia ED, Vahdati A, Daneshvar S, Noghani A. The effect of electromagnetic fields on survival and proliferation rate of dental pulp stem cells. Acta Odontol Scand 2020; 78:494-500. [PMID: 32191156 DOI: 10.1080/00016357.2020.1734655] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Aims: Extremely low-frequency electromagnetic fields (ELF-EMF) can affect biological systems and alter some cell functions like proliferation rate. Dental pulp tissue is known as a source of multipotent stromal stem cells (MSCs), which can be obtained by a less invasive and more available process compared to bone marrow-derived stem cells (BMSCs). This study aimed to consider the effect of ELF-EMF on proliferation rates of human dental pulp stem cells (hDPSCs).Material and methods: ELF-EMF was generated by a system including autotransformer, multi-meter, solenoid coils, teslameter and its probe. The effect of ELF-EMF with the intensity of 0.5 and 1 mT and 50 Hz on the proliferation rate of hDPSCs was assessed in 20 and 40 min per day for 7 days. MTT assay and DAPI test were used to determine the growth and proliferation of DPSCs.Results: Based on MTT, ELF-EMF has maximum effect with the intensity of 1 mT for 20 min/day on the proliferation of hDPSCs. The survival and proliferation rate in all exposure groups were significantly higher than the control group. Based on the data obtained from MTT and DAPI assay, the number of viable cells in the group exposed to 1 mT for 20 min/day was higher than other groups (p < .05).Conclusions: Regarding to the results of this study, 0.5 and 1 mT ELF-EMF can enhance survival and proliferation rates of hDPSCs.
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Affiliation(s)
- Mohammad Samiei
- Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zahra Aghazadeh
- Department of Oral Medicine, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elaheh Dalir Abdolahinia
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amin Vahdati
- Dental Public Health Program, Community Oral Health Department, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran
| | - Sabalan Daneshvar
- Department of Electrical and Computer Engineering, Faculty of Electrical Engineering, University of Tabriz, Tabriz, Iran
| | - Atefe Noghani
- Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran
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Haddouti EM, Randau TM, Hilgers C, Masson W, Walgenbach KJ, Pflugmacher R, Burger C, Gravius S, Schildberg FA. Characterization and Comparison of Human and Ovine Mesenchymal Stromal Cells from Three Corresponding Sources. Int J Mol Sci 2020; 21:E2310. [PMID: 32230731 DOI: 10.3390/ijms21072310] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 12/14/2022] Open
Abstract
Currently, there is an increasing focus on mesenchymal stromal cells (MSC) as therapeutic option in bone pathologies as well as in general regenerative medicine. Although human MSCs have been extensively characterized and standardized, ovine MSCs are poorly understood. This limitation hampers clinical progress, as sheep are an excellent large animal model for orthopedic studies. Our report describes a direct comparison of human and ovine MSCs from three corresponding sources under the same conditions. All MSCs presented solid growth behavior and potent immunomodulatory capacities. Additionally, we were able to identify common positive (CD29, CD44, CD73, CD90, CD105, CD166) and negative (CD14, CD34, CD45, HLA-DR) surface markers. Although both human and ovine MSCs showed strong osteogenic potential, direct comparison revealed a slower mineralization process in ovine MSCs. Regarding gene expression level, both human and ovine MSCs presented a comparable up-regulation of Runx2 and a trend toward down-regulation of Col1A during osteogenic differentiation. In summary, this side by side comparison defined phenotypic similarities and differences of human and ovine MSCs from three different sources, thereby contributing to a better characterization and standardization of ovine MSCs. The key findings shown in this report demonstrate the utility of ovine MSCs in preclinical studies for MSC-based therapies.
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Del Pino-Molina L, Rodríguez-Ubreva J, Torres Canizales J, Coronel-Díaz M, Kulis M, Martín-Subero JI, van der Burg M, Ballestar E, López-Granados E. Impaired CpG Demethylation in Common Variable Immunodeficiency Associates With B Cell Phenotype and Proliferation Rate. Front Immunol 2019; 10:878. [PMID: 31105700 PMCID: PMC6492528 DOI: 10.3389/fimmu.2019.00878] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 12/03/2018] [Accepted: 04/05/2019] [Indexed: 01/01/2023] Open
Abstract
Common Variable Immunodeficiency (CVID) is characterized by impaired antibody production and poor terminal differentiation of the B cell compartment, yet its pathogenesis is still poorly understood. We first reported the occurrence of epigenetic alterations in CVID by high-throughput methylation analysis in CVID-discordant monozygotic twins. Data from a recent whole DNA methylome analysis throughout different stages of normal B cell differentiation allowed us to design a new experimental approach. We selected CpG sites for analysis based on two criteria: one, CpGs with potential association with the transcriptional status of relevant genes for B cell activation and differentiation; and two, CpGs that undergo significant demethylation from naïve to memory B cells in healthy individuals. DNA methylation was analyzed by bisulfite pyrosequencing of specific CpG sites in sorted naïve and memory B cell subsets from CVID patients and healthy donors. We observed impaired demethylation in two thirds of the selected CpGs in CVID memory B cells, in genes that govern B cell-specific processes or participate in B cell signaling. The degree of demethylation impairment associated with the extent of the memory B cell reduction. The impaired demethylation in such functionally relevant genes as AICDA in switched memory B cells correlated with a lower proliferative rate. Our new results reinforce the hypothesis of altered demethylation during B cell differentiation as a contributing pathogenic mechanism to the impairment of B cell function and maturation in CVID. In particular, deregulated epigenetic control of AICDA could play a role in the defective establishment of a post-germinal center B cell compartment in CVID.
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Affiliation(s)
- Lucía Del Pino-Molina
- Lymphocyte Pathophysiology in Immunodeficiencies Group, Department of Clinical Immunology, IdiPAZ Institute for Health Research, University Hospital La Paz, Madrid, Spain
| | - Javier Rodríguez-Ubreva
- Chromatin and Disease Group, Cancer Epigenetics and Biology Programme (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain
| | - Juan Torres Canizales
- Lymphocyte Pathophysiology in Immunodeficiencies Group, Department of Clinical Immunology, IdiPAZ Institute for Health Research, University Hospital La Paz, Madrid, Spain
| | - María Coronel-Díaz
- Lymphocyte Pathophysiology in Immunodeficiencies Group, Department of Clinical Immunology, IdiPAZ Institute for Health Research, University Hospital La Paz, Madrid, Spain
| | - Marta Kulis
- Fundació Clínic per a la Recerca Biomèdica, Barcelona, Spain
| | - José I Martín-Subero
- Departamento de Fundamentos Clínicos, Centro de Investigación Biomédica en Red de Cáncer, CIBERONC, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Mirjam van der Burg
- Laboratory for Immunology, Department of Pediatrics, Leiden University Medical Center, Leiden, Netherlands
| | - Esteban Ballestar
- Chromatin and Disease Group, Cancer Epigenetics and Biology Programme (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain
| | - Eduardo López-Granados
- Lymphocyte Pathophysiology in Immunodeficiencies Group, Department of Clinical Immunology, IdiPAZ Institute for Health Research, University Hospital La Paz, Madrid, Spain
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Anand M, Lázár B, Tóth R, Páll E, Patakiné Várkonyi E, Liptói K, Homolya L, Hegyi Z, Hidas A, Gócza E. Enhancement of chicken primordial germ cell in vitro maintenance using an automated cell image analyser. Acta Vet Hung 2018; 66:518-529. [PMID: 30580540 DOI: 10.1556/004.2018.046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Primordial germ cells (PGCs) were isolated from blood samples of chicken embryos. We established four PGC lines: two males (FS-ZZ-101, GFP-ZZ-4ZP) and two females (FS-ZW-111, GFP-ZW-5ZP). We could not detect a significant difference in the marker expression profile, but there was a remarkable difference between the proliferation rates of these PGC lines. We monitored the number of PGCs throughout a three-day period using a high-content screening cell imaging and analysing system (HCS). We compared three different initial cell concentrations in the wells: ~1000 cells (1×, ~4000 (4× and ~8000 (8×. For the GFPZW- 5ZP, FS-ZZ-101 and FS-ZW-111 PGC lines the lowest doubling time was observed at 4× concentration, while for GFP-ZZ-4ZP we found the lowest doubling time at 1× concentration. At 8× initial concentration, the growth rate was high during the first two days for all cell lines, but this was followed by the appearance of cell aggregates decreasing the cell growth rate. We could conclude that the difference in proliferation rate could mainly be attributed to genotypic variation in the established PGC lines, but external factors such as cell concentration and quality of the culture medium also affect the growth rate of PGCs.
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Affiliation(s)
- Mahek Anand
- 1 Doctoral School of Animal Husbandry Science, Szent István University, Gödöllő, Hungary
- 2 National Agricultural Research and Innovation Center, Agricultural Biotechnology Institute, Animal Biotechnology Department, Szent-Györgyi Albert u. 4, H-2100 Gödöllő, Hungary
| | - Bence Lázár
- 3 Research Centre for Farm Animal Gene Conservation, Gödöllő, Hungary
- 2 National Agricultural Research and Innovation Center, Agricultural Biotechnology Institute, Animal Biotechnology Department, Szent-Györgyi Albert u. 4, H-2100 Gödöllő, Hungary
| | - Roland Tóth
- 1 Doctoral School of Animal Husbandry Science, Szent István University, Gödöllő, Hungary
- 2 National Agricultural Research and Innovation Center, Agricultural Biotechnology Institute, Animal Biotechnology Department, Szent-Györgyi Albert u. 4, H-2100 Gödöllő, Hungary
| | - Emőke Páll
- 5 Department of Reproduction, Obstetrics and Veterinary Gynaecology, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, Romania
| | | | - Krisztina Liptói
- 3 Research Centre for Farm Animal Gene Conservation, Gödöllő, Hungary
| | - László Homolya
- 4 Molecular Cell Biology Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - Zoltán Hegyi
- 4 Molecular Cell Biology Research Group, Institute of Enzymology, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Budapest, Hungary
| | - András Hidas
- 3 Research Centre for Farm Animal Gene Conservation, Gödöllő, Hungary
| | - Elen Gócza
- 2 National Agricultural Research and Innovation Center, Agricultural Biotechnology Institute, Animal Biotechnology Department, Szent-Györgyi Albert u. 4, H-2100 Gödöllő, Hungary
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12
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Miniscalco B, Poggi A, Martini V, Morello E, Sulce M, Melega M, Borrelli A, Tarducci A, Riondato F. Flow Cytometric Characterization of S-phase Fraction and Ploidy in Lymph Node Aspirates from Dogs with Lymphoma. J Comp Pathol 2018; 161:34-42. [PMID: 30173856 DOI: 10.1016/j.jcpa.2018.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 04/27/2018] [Accepted: 04/28/2018] [Indexed: 11/26/2022]
Abstract
Canine lymphoma is a multifaceted disease encompassing numerous entities with different prognosis. Objective assessment of the proliferation rate is of importance from the pathological and clinical perspectives. Different methods have been described in the literature to assess proliferation rate, including evaluation of Ki67 expression in fresh lymph node (LN) aspirates measured by flow cytometry (FC). This test has a high accuracy in discriminating between low- and high-grade lymphomas, and provides prognostic information among high-grade B-cell lymphomas. DNA content analysis is less expensive and suitable for well-preserved samples. We describe DNA-content analysis using LN aspirates from 112 dogs with lymphoma. S-phase fraction (SPF) accurately discriminated between low- and high-grade lymphomas, with 3.15% being the best discriminating cut-off value. SPF values strongly correlated with Ki67 expression as assessed by FC. Survival analyses were restricted to 33 dogs with high-grade B-cell lymphoma receiving standardized multi-agent chemotherapy, but no significant result was obtained for SPF. We also describe a subset of aneuploid cases and their respective follow-up. We conclude that DNA content analysis may be combined with morphological examination of LN aspirates to improve the objectivity in lymphoma subtype classification in dogs. Further studies are needed to assess the possible prognostic role of SPF and ploidy status within specific lymphoma subtypes in dogs.
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Affiliation(s)
- B Miniscalco
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, Turin, Italy
| | - A Poggi
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, Turin, Italy
| | - V Martini
- Department of Veterinary Medicine, University of Milan, Via Celoria 10, Milan, Italy
| | - E Morello
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, Turin, Italy
| | - M Sulce
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, Turin, Italy
| | - M Melega
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, Turin, Italy
| | - A Borrelli
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, Turin, Italy
| | - A Tarducci
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, Turin, Italy
| | - F Riondato
- Department of Veterinary Sciences, University of Turin, Largo Braccini 2, Grugliasco, Turin, Italy.
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张 韫, 蔡 云, 刘 媛, 赵 博, 李 国. [Glycyrrhetinic acid selectively inhibits proliferation of hepatocellular carcinoma cells in vitro]. Nan Fang Yi Ke Da Xue Xue Bao 2018; 38:477-482. [PMID: 29735451 PMCID: PMC6765654 DOI: 10.3969/j.issn.1673-4254.2018.04.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the selective inhibitory effect of glycyrrhetinic acid on 4 hepatocellular carcinoma (HCC) cells with different proliferation rates and explore the underlying mechanisms. METHODS MTT method was used to detect the proliferation rates of 4 HCC cell lines, namely SMMC-7721, SK-HEP1, HEPG2 and HEP3B. Following treatment of the cells with glycyrrhetinic acid (5, 10, 20, 30, 40, and 60 µmol/L), the cell viability was analyzed using MTT assay and the expressions of total ERK protein, p-ERK protein and topoisomerase IIα were detected using Western blotting. RESULTS Among the 4 cell lines, SMMC-7721 had the lowest and SK-HEP1 had the highest proliferation rate. Treatment with glycyrrhetinic acid for 48 h dose-dependently inhibited the proliferation of all the 4 cell lines in vitro and produced the strongest inhibitory effect in SMMC-7721 cells with the IC50 of 28.04 µmol/L. The proliferation rate of the cells was positively correlated with the expression levels of p-ERK and topoisomerase IIα, which were the lowest in SMMC-7721 cells and the highest in SK-HEP1 cells. Treatment with 50 µmol/L glycyrrhetinic acid significantly down-regulated the expressions of p-ERK and topoisomerase IIα in the 4 HCC cell lines (P<0.05), while 25 µmol/L glycyrrhetinic acid significantly reduced the expression of topoisomerase IIα and p-ERK in SMMC-7721, HEPG2 and HEP3B cells (P<0.05) but not in SK-HEP1 cells. CONCLUSION Glycyrrhetinic acid can inhibit the proliferation of different HCC cells particularly in cells with a low proliferation rate. The inhibitory effect of glycyrrhetinic acid might be mediated by reducing the expressions of topoisomerase IIα and inhibiting the ERK pathway.
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Affiliation(s)
- 韫琪 张
- 南方医科大学南方医院药学部//南方医院合理用药评价与药物递送发展实验室//南方医科大学药学院广东省 新药筛选重点实验室,广东 广州 510515Department of Pharmacy, Nanfang Hospital/Rational Medication Evaluation and Drug Delivery Technology Lab, Nanfang Hospital/ Guangdong Key Laboratory of New Drug Screening, School of Pharmaceutics, Southern Medical University, Guangzhou 510515, China
| | - 云 蔡
- 广州医科大学附属第三医院药学部,广东 广州 510150Department of Pharmacy, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510150, China
| | - 媛 刘
- 南方医科大学南方医院药学部//南方医院合理用药评价与药物递送发展实验室//南方医科大学药学院广东省 新药筛选重点实验室,广东 广州 510515Department of Pharmacy, Nanfang Hospital/Rational Medication Evaluation and Drug Delivery Technology Lab, Nanfang Hospital/ Guangdong Key Laboratory of New Drug Screening, School of Pharmaceutics, Southern Medical University, Guangzhou 510515, China
| | - 博欣 赵
- 南方医科大学南方医院药学部//南方医院合理用药评价与药物递送发展实验室//南方医科大学药学院广东省 新药筛选重点实验室,广东 广州 510515Department of Pharmacy, Nanfang Hospital/Rational Medication Evaluation and Drug Delivery Technology Lab, Nanfang Hospital/ Guangdong Key Laboratory of New Drug Screening, School of Pharmaceutics, Southern Medical University, Guangzhou 510515, China
| | - 国锋 李
- 南方医科大学南方医院药学部//南方医院合理用药评价与药物递送发展实验室//南方医科大学药学院广东省 新药筛选重点实验室,广东 广州 510515Department of Pharmacy, Nanfang Hospital/Rational Medication Evaluation and Drug Delivery Technology Lab, Nanfang Hospital/ Guangdong Key Laboratory of New Drug Screening, School of Pharmaceutics, Southern Medical University, Guangzhou 510515, China
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14
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Kiesel B, Mischkulnig M, Woehrer A, Martinez-Moreno M, Millesi M, Mallouhi A, Czech T, Preusser M, Hainfellner JA, Wolfsberger S, Knosp E, Widhalm G. Systematic histopathological analysis of different 5-aminolevulinic acid-induced fluorescence levels in newly diagnosed glioblastomas. J Neurosurg 2017; 129:341-353. [PMID: 29076783 DOI: 10.3171/2017.4.jns162991] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Glioblastoma (GBM) is characterized by distinct intratumoral histopathological heterogeneity with regard to variable tumor morphology, cell proliferation, and microvascularity. Maximum resection of a GBM results in an improved prognosis and thus represents the aim of surgery in the majority of cases. Fluorescence-guided surgery using 5-aminolevulinic acid (5-ALA) is currently widely applied for improved intraoperative tumor visualization in patients with a GBM. Three intratumoral fluorescence levels (i.e., strong, vague, or no fluorescence) can usually be distinguished during surgery. So far, however, their exact histopathological correlates and their surgical relevance have not been clarified sufficiently. Thus, the aim of this study was to systematically analyze tissue samples from newly diagnosed GBMs with different fluorescence levels according to relevant histopathological parameters. METHODS This prospective study recruited patients who underwent 5-ALA fluorescence-guided resection of a newly diagnosed radiologically suspected GBM. Each patient received 5-ALA approximately 3 hours before surgery, and a modified neurosurgical microscope was applied for intraoperative visualization of 5-ALA-induced fluorescence. During surgery, tissue samples with strong, vague, or no fluorescence were collected. For each sample, the presence of tumor tissue, quality of tissue (compact, infiltrative, or no tumor), histopathological criteria of malignancy (cell density, nuclear pleomorphism, mitotic activity, and presence of microvascular proliferation/necrosis), proliferation rate (MIB-1 labeling index [LI]), and microvessel density (using CD34 staining) were investigated. RESULTS Altogether, 77 patients with a newly diagnosed, histopathologically confirmed GBM were included, and 131 samples with strong fluorescence, 69 samples with vague fluorescence, and 67 samples with no fluorescence were collected. Tumor tissue was detected in all 131 (100%) of the samples with strong fluorescence and in 65 (94%) of the 69 samples with vague fluorescence. However, mostly infiltrative tumor tissue was still found in 33 (49%) of 67 samples despite their lack of fluorescence. Strong fluorescence corresponded to compact tumors in 109 (83%) of 131 samples, whereas vague fluorescence was consistent with infiltrative tumors in 44 (64%) of 69 samples. In terms of the histopathological criteria of malignancy, a significant positive correlation of all analyzed parameters comprising cell density, nuclear pleomorphism, mitotic activity, microvascular proliferation, and necrosis with the 3 fluorescence levels was observed (p < 0.001). Furthermore, the proliferation rate significantly and positively correlated with strong (MIB-1 LI 28.3%), vague (MIB-1 LI 16.7%), and no (MIB-1 LI 8.8%) fluorescence (p < 0.001). Last, a significantly higher microvessel density was detected in samples with strong fluorescence (CD34 125.5 vessels/0.25 mm2) than in those with vague (CD34 82.8 vessels/0.25 mm2) or no (CD34 68.6 vessels/0.25 mm2) fluorescence (p < 0.001). CONCLUSIONS Strong and vague 5-ALA-induced fluorescence enables visualization of intratumoral areas with specific histopathological features and thus supports neurosurgeons in improving the extent of resection in patients with a newly diagnosed GBM. Despite the lack of fluorescence, tumor tissue was still observed in approximately half of the cases. To overcome this current limitation, the promising approach of complementary spectroscopic measurement of fluorescence should be investigated further.
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Affiliation(s)
- Barbara Kiesel
- 1Department of Neurosurgery.,2Institute of Neurology.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | | | - Adelheid Woehrer
- 2Institute of Neurology.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | | | - Matthias Millesi
- 1Department of Neurosurgery.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | - Ammar Mallouhi
- Departments of3Radiology and.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | - Thomas Czech
- 1Department of Neurosurgery.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | - Matthias Preusser
- 4Medicine I, and.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | - Johannes A Hainfellner
- 2Institute of Neurology.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | - Stefan Wolfsberger
- 1Department of Neurosurgery.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | - Engelbert Knosp
- 1Department of Neurosurgery.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
| | - Georg Widhalm
- 1Department of Neurosurgery.,5Comprehensive Cancer Center-Central Nervous System Tumours Unit (CCC-CNS), Medical University Vienna, Austria
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Abstract
The development of molecular therapies for cancer treatment has created a need to image biochemical and molecular processes to appropriately select tumors that express the drug target, thereby predicting a positive response to therapy. Biomarker-driven molecular imaging is complementary to pathologic analysis and offers a more direct measure of drug efficacy and treatment response, potentially providing early insight into therapeutic futility and allowing response-adapted treatment strategies. Imaging also allows a unique means of assessing the heterogeneity of both intra- and intertumoral targets as well as a mixed response to therapy; this information is important in the setting of metastatic disease. Here we review the development of novel molecular imaging probes and combinations of probes to guide therapy for two new targets and associated therapeutic agents: cyclin-dependent kinase inhibitors and poly(adenosine diphosphate-ribose) polymerase inhibitors.
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Affiliation(s)
- Elizabeth S McDonald
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - David A Mankoff
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Robert H Mach
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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Hadzhiyanev A, Ivanova R, Nachev E, Elenkova A, Yaneva M, Zaharieva S, Marinov M, Surchev J, Ivanova A. Evaluation of prognostic utility of MIB-1 and p53 expression in pituitary adenomas: correlations with clinical behaviour and follow-up results. BIOTECHNOL BIOTEC EQ 2014; 28:502-507. [PMID: 26019536 PMCID: PMC4433927 DOI: 10.1080/13102818.2014.932510] [Citation(s) in RCA: 10] [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: 11/25/2013] [Accepted: 01/31/2014] [Indexed: 11/15/2022] Open
Abstract
Pituitary adenomas (PAs) show a broad clinicomorphological spectrum. The proliferation activity, evaluated by MIB-1 labelling index (LI), and p53 expression have been pointed as predictive markers for invasiveness and progression. The aim of this study was to evaluate the proliferation rate and p53 expression and to look for any relationships with the clinical behaviour and follow-up results in a series of Bulgarian patients with PAs. A total of 93 patients with PAs (81 hormone-secreting, 12 non-functioning), who were operated on and followed up for a period of five years, were included. The MIB-1 LI and p53 expressions were determined by immunohistochemistry and correlated with various clinical and tumour variables. The whole group of PAs showed a low proliferation rate with evident variations in a small number of cases (MIB-1 LI – 0.50 ± 0.56, from 0.1 to 3.30). MIB-1 LI correlated with tumour size (p = 0.012) and was positively related with male gender (p = 0.23) and partial surgical resection (p = 0.036). We found no significant differences regarding the age, functional activity, invasion (n = 33), expansion (n = 37) and tumour recurrences (seven cases). Only 10 cases (10.8%) showed a focal, nuclear p53 immunoreactivity. The p53 positive tumours had higher proliferation rate (p = 0.0001) but no relationship with the other clinical and tumour variables. Among all cases, there was only one case with higher MIB-1 LI (3.3%), positive p53 expression and tumour recurrence after surgery. Our results show that most PAs have a low proliferation rate and lack of p53 expression, as well as no relationship with tumour invasion or postsurgical progression.
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Affiliation(s)
- Asen Hadzhiyanev
- Department of Neurosurgery, University Hospital 'St. Ivan Rilsky', Medical University of Sofia , Sofia , Bulgaria
| | - Radina Ivanova
- Clinical Center of Endocrinology and Gerontology, Medical University of Sofia , Sofia , Bulgaria
| | - Emil Nachev
- Clinical Center of Endocrinology and Gerontology, Medical University of Sofia , Sofia , Bulgaria
| | - Atanaska Elenkova
- Clinical Center of Endocrinology and Gerontology, Medical University of Sofia , Sofia , Bulgaria
| | - Maria Yaneva
- Clinical Center of Endocrinology and Gerontology, Medical University of Sofia , Sofia , Bulgaria
| | - Sabina Zaharieva
- Clinical Center of Endocrinology and Gerontology, Medical University of Sofia , Sofia , Bulgaria
| | - Marin Marinov
- Department of Neurosurgery, University Hospital 'St. Ivan Rilsky', Medical University of Sofia , Sofia , Bulgaria
| | - Jivko Surchev
- Department of Neurosurgery, University Hospital 'St. Ivan Rilsky', Medical University of Sofia , Sofia , Bulgaria
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Abdullah MF, Abdullah SF, Omar NS, Mahmood Z, Fazliah Mohd Noor SN, Kannan TP, Mokhtar KI. Proliferation rate of stem cells derived from human dental pulp and identification of differentially expressed genes. Cell Biol Int 2014; 38:582-90. [PMID: 24375868 DOI: 10.1002/cbin.10229] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 12/10/2013] [Indexed: 01/09/2023]
Abstract
Stem cells from human exfoliated deciduous teeth (SHED) and dental pulp stem cells (DPSCs) obtained from the dental pulp of human extracted tooth were cultured and characterized to confirm that these were mesenchymal stem cells. The proliferation rate was assessed using AlamarBlue® cell assay. The differentially expressed genes in SHED and DPSCs were identified using the GeneFishing™ technique. The proliferation rate of SHED (P < 0.05) was significantly higher than DPSCs while SHED had a lower multiplication rate and shorter population doubling time (0.01429, 60.57 h) than DPSCs (0.00286, 472.43 h). Two bands were highly expressed in SHED and three bands in DPSCs. Sequencing analysis showed these to be TIMP metallopeptidase inhibitor 1 (TIMP1), and ribosomal protein s8, (RPS8) in SHED and collagen, type I, alpha 1, (COL1A1), follistatin-like 1 (FSTL1), lectin, galactoside-binding, soluble, 1, (LGALS1) in DPSCs. TIMP1 is involved in degradation of the extracellular matrix, cell proliferation and anti-apoptotic function and RPS8 is involved as a rate-limiting factor in translational regulation; COL1A1 is involved in the resistance and elasticity of the tissues; FSTL1 is an autoantigen associated with rheumatoid arthritis; LGALS1 is involved in cell growth, differentiation, adhesion, RNA processing, apoptosis and malignant transformation. This, along with further protein expression analysis, holds promise in tissue engineering and regenerative medicine.
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Buschmann J, Gao S, Härter L, Hemmi S, Welti M, Werner CML, Calcagni M, Cinelli P, Wanner GA. Yield and proliferation rate of adipose-derived stromal cells as a function of age, body mass index and harvest site-increasing the yield by use of adherent and supernatant fractions? Cytotherapy 2013; 15:1098-105. [PMID: 23800730 DOI: 10.1016/j.jcyt.2013.04.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 04/19/2013] [Accepted: 04/23/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND AIMS Adipose-derived stem cells are easily accessed and have a relatively high density compared with other mesenchymal stromal cells. Isolation protocols of adipose-derived stem cells (ASC) rely on the cell's ability to adhere to tissue culture plastic overnight. It was evaluated whether the floating ASC fractions are also of interest for cell-based therapies. In addition, the impact of age, body mass index (BMI) and harvest site was assessed. METHODS The surface protein profile with the use of flow cytometry, the cell yield and the doubling time of passages 4, 5 and 6 of ASC from 30 donors were determined. Adherent and supernatant fractions were compared. The impact of age, BMI and harvest site on cell yield and doubling times was determined. RESULTS Both adherent and supernatant fractions showed high mean fluorescence intensities for CD13, CD29, CD44, CD73, CD90 and CD105 and comparatively low mean fluorescence intensities for CD11b, CD62L, intracellular adhesion molecule-1 and CD34. Doubling times of adherent and supernatant fractions did not differ significantly. Whereas the old age group had a significantly lower cell yield compared with the middle aged group, BMI and harvest site had no impact on cell yield. Finally, doubling times for passages 4, 5 and 6 were not influenced by the age and BMI of the donors, nor the tissue-harvesting site. CONCLUSIONS The floating ASC fraction is an equivalent second cell source just like the adherent ASC fraction. Donor age, BMI and harvest site do not influence cell yield and proliferation rate.
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Affiliation(s)
- Johanna Buschmann
- Division of Plastic and Hand Surgery, University Hospital Zurich, Zurich, Switzerland.
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Abstract
PURPOSE ROS1 is an oncogene, expressed primarily in glioblastomas of the brain that has been hypothesized to mediate the effects of early stage tumor progression. In addition, it was reported that ROS1 expression was observed in diverse cancer tissue or cell lines and ROS1 is associated with the development of several tumors. However, ROS1 expression has not been studied in breast cancer to date. Therefore, we investigated ROS1 expression at the protein and gene level to compare expression patterns and to verify the association with prognostic factors in invasive ductal carcinoma (IDC) of the breast. MATERIALS AND METHODS Tissue samples from 203 patients were used. Forty-six cases were available for fresh tissue. We performed immunohistochemical staining and real-time polymerase chain reaction (PCR). RESULTS ROS1 expression was significantly lower in proportion to higher histologic grade, higher mitotic counts, lower estrogen receptor expression, and a higher Ki-67 proliferation index, although ROS1 expression was not significantly associated with the survival rate. The result of real-time PCR revealed similar trends, however not statistically significant. CONCLUSION Higher ROS1 expression may be associated with favorable prognostic factors of IDC and its expression in IDC is related to the proliferation of tumor cells.
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Affiliation(s)
- Minseob Eom
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Sayamaa Lkhagvadorj
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Sung Soo Oh
- Department of Occupational and Environmental Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Airi Han
- Department of Surgery, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Kwang Hwa Park
- Department of Pathology, Yonsei University Wonju College of Medicine, Wonju, Korea
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Chabot-Richards DS, Martin DR, Myers OB, Czuchlewski DR, Hunt KE. Quantitative image analysis in the assessment of diffuse large B-cell lymphoma. Mod Pathol 2011; 24:1598-605. [PMID: 21841768 DOI: 10.1038/modpathol.2011.123] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Proliferation rates in diffuse large B-cell lymphoma have been associated with conflicting outcomes in the literature, more often with high proliferation associated with poor prognosis. In most studies, the proliferation rate was estimated by a pathologist using an immunohistochemical stain for the monoclonal antibody Ki-67. We hypothesized that a quantitative image analysis algorithm would give a more accurate estimate of the proliferation rate, leading to better associations with survival. In all, 84 cases of diffuse large B-cell lymphoma were selected according to the World Health Organization criteria. Ki-67 percentage positivity estimated by the pathologist was recorded from the original report. The same slides were then scanned using an Aperio ImageScope, and Ki-67 percentage positivity was calculated using a computer-based quantitative immunohistochemistry nuclear algorithm. In addition, chart review was performed and survival time was recorded. The Ki-67 percentage estimated by the pathologist from the original report versus quantitative image analysis was significantly correlated (P<0.001), but pathologist Ki-67 percentages were significantly higher than quantitative image analysis (P=0.021). There was less agreement at lower Ki-67 percentages. Comparison of Ki-67 percentage positivity versus survival did not show significant association either with pathologist estimate or quantitative image analysis. However, although not significant, there was a trend of worse survival at higher proliferation rates detected by the pathologist but not by quantitative image analysis. Interestingly, our data suggest that the Ki-67 percentage positivity as assessed by the pathologist may be more closely associated with survival outcome than that identified by quantitative image analysis. This may indicate that pathologists are better at selecting appropriate areas of the slide. More cases are needed to assess whether this finding would be statistically significant. Due to the good correlation between pathologist estimate and quantitative image analysis, there is no substantial benefit to using quantitative image analysis at this point of time.
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21
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Gasinska A, Skolyszewski J, Popiela T, Richter P, Darasz Z, Nowak K, Niemiec J, Biesaga B, Adamczyk A, Bucki K, Malecki K, Reinfuss M, Kowalska T. Bromodeoxyuridine labeling index as an indicator of early tumor response to preoperative radiotherapy in patients with rectal cancer. J Gastrointest Surg 2007; 11:520-8. [PMID: 17436139 PMCID: PMC1852386 DOI: 10.1007/s11605-007-0127-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
PURPOSE Assessment of tumor proliferation rate using Bromodeoxyuridine labeling index (BrdUrdLI) as a possible predictor of rectal cancer response to preoperative radiotherapy (RT). METHODS AND MATERIAL Ninety-two patients were qualified either to short RT (5 Gy/fraction/5 days) and surgery about 1 week after RT (schedule I), or to short RT and 4-5 weeks interval before surgery (schedule II). Tumor samples were taken twice from each patient: before RT and at the time of surgery. The samples were incubated with BrdUrd for 1 h at 37 degrees C, and the BrdUrdLI was calculated as a percentage of BrdUrd-labeled cells. RESULTS Thirty-eight patients were treated according to schedule I and 54 patients according to schedule II. Mean BrdUrdLI before RT was 8.5% and its value did not differ between the patients in the two compared groups. After RT tumors showed statistically significant growth inhibition (reduction of BrdUrdLI). As the pretreatment BrdUrd LI was not predictive for early clinical and pathologic tumor response, prognostic role of the ratio of BrdUrdLI after to BrdUrdLI before RT was considered. The ratios were calculated separately for fast (BrdUrd LI>8.5%) and slowly (BrdUrd LI<or=8.5%) proliferating tumors and correlated with overall treatment time (OTT, i.e., time from the first day of RT to surgery). One month after RT, accelerated proliferation was observed only in slowly proliferating tumors. CONCLUSIONS Pretreatment BrdUrdLI was not predictive for early clinical and pathologic tumor response. The ratio after/before RT BrdUrdLI was correlated to inhibition of proliferation in responsive tumors.
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Affiliation(s)
- Anna Gasinska
- Department of Applied Radiobiology, Center of Oncology, Garncarska 11, 31-115, Krakow, Poland.
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Abstract
We have studied the effects of hypoxia on aminolaevulinic acid (ALA)-induced protoporphyrin IX (PpIX) synthesis in EMT6 monolayer cultures characterized by different cell densities and proliferation rates. Specifically, after ALA incubation under hypoxic or normoxic conditions, we detected spectrofluorometrically the PpIX content of the following populations: (a) low-density exponentially growing cells; (b) high-density fed-plateau cells; and (c) high-density unfed-plateau cells. These populations were selected either for the purpose of comparison with other in vitro studies (low-density exponentially growing cells) or as representatives of tumour regions adjacent to (high-density fed-plateau cells) and further away from (high-density unfed-plateau cells) capillaries. The amount of PpIX per cell produced by each one of these populations was higher after normoxic ALA incubation. The magnitude of the effect of hypoxia on PpIX synthesis was dependent on cell density and proliferation rate. A 42-fold decrease in PpIX fluorescence was observed for the high-density unfed-plateau cells. PpIX production by the low-density exponential cells was affected the least by ALA incubation under hypoxic conditions (1.4-fold decrease), whereas the effect on the high-density fed-plateau population was intermediate (20-fold decrease).
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Affiliation(s)
- I Georgakoudi
- Department of Biochemistry and Biophysics, University of Rochester School of Medicine and Dentistry, NY 14642, USA
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