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Fekri Kohan S, Zamani H, Salehzadeh A. Antibacterial potential and cytotoxic activity of iron oxide nanoparticles conjugated with thymol (Fe 3O 4@Glu-Thymol) on breast cancer cells and investigating the expression of BAX, CASP8, and BCL-2 genes. Biometals 2023; 36:1273-1284. [PMID: 37351759 DOI: 10.1007/s10534-023-00516-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/14/2023] [Indexed: 06/24/2023]
Abstract
The use of metal nanoparticles (NPs) conjugated with natural herbal molecules in biomedical applications has been growing. In this work, we synthesized Iron oxide NPs conjugated with thymol (Fe3O4@Glu-Thymol) and investigated their antibacterial and anticancer potentials. Physicochemical features of the NPs were studied by FT-IR, EDS-mapping, XRD, DLS, zeta potential, and electron microscopy. The antibacterial activity of the NPs against Pseudomonas aeruginosa and anticancer activity for breast cancer cells was investigated by broth microdilution and MTT and flow cytometry assays, respectively. The expression of apoptosis signaling genes in breast cancer cells that were treated with the NPs was studied by qPCR assay. The NPs were spherical, in a size range of 40-66 nm, without impurities, and with zeta potential and hydrodynamic size of - 23 mV and 185 nm, respectively. Moreover, the FT-IR and XRD assays confirmed the proper synthesis of Fe3O4 and conjugation with thymol. The minimum inhibitory concentration of the NPs for P. aeruginosa strains was 64-128 µg/mL. Our results showed that Fe3O4@Glu-Thymol was considerably more toxic for breast cancer cells than normal human cells and the 50% inhibitory concentration were 90.4 and 322 µg/mL, respectively. Upon treating breast cancer cells with the NPs the frequency of cell apoptosis increased by 18.9%. Also, the expression of the BAX and CASP8 genes in NPs treated cells significantly increased by 1.75 and 2.25 folds, respectively while the BCL-2 gene remained almost constant. This study reveals that Fe3O4@Glu-Thymol has considerable potential to be used in biomedical fields.
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Affiliation(s)
- Shirin Fekri Kohan
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Hojjatolah Zamani
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht, Iran
| | - Ali Salehzadeh
- Department of Biology, Rasht Branch, Islamic Azad University, Rasht, Iran.
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Alipour M, Sheikhnejad R, Fouani MH, Bardania H, Hosseinkhani S. DNAi-peptide nanohybrid smart particles target BCL-2 oncogene and induce apoptosis in breast cancer cells. Biomed Pharmacother 2023; 166:115299. [PMID: 37573657 DOI: 10.1016/j.biopha.2023.115299] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/31/2023] [Accepted: 08/05/2023] [Indexed: 08/15/2023] Open
Abstract
Genomic DNA sequences provide unique target sites, with high druggability value, for treatment of genetically-linked diseases like cancer. B-cell lymphoma protein-2 (BCL-2) prevents Bcl-2-associated X protein (BAX) and Bcl-2 antagonist killer 1 (BAK) oligomerization, which would otherwise lead to the release of several apoptogenic molecules from the mitochondrion. It is also known that BCL-2 binds to and inactivates BAX and other pro-apoptotic proteins, thereby inhibiting apoptosis. BCL-2 protein family, through its role in regulation of apoptotic pathways, is possibly related to chemo-resistance in almost half of all cancer types including breast cancer. Here for the first time, we have developed a nanohybrid using a peptide-based carrier and a Deoxyribonucleic acid inhibitor (DNAi) against BCL-2 oncogene to induce apoptosis in breast cancer cells. The genetically designed nanocarrier was functionalized with an internalizing RGD (iRGD) targeting motif and successfully produced by recombinant DNA technology. Gel retardation assay demonstrated that the peptide-based carrier binds single-stranded DNAi upon simple mixing. Dynamic light scattering (DLS) and transmission electron microscopy (TEM) analyses further revealed the formation of nanohybrid particles with a size of 30 nm and a slightly positive charge. This hemocompatible nanohybrid efficiently delivered its contents into cancer cells using iRGD targeting moiety. Gene expression analysis demonstrated that the nanohybrids, which contained DNAi against BCL-2 proficiently suppressed the expression of this oncogene in a sequence specific manner. In addition, the nanohybrid, triggered release of cytochrome c (cyt c) and caspase3/7 activation with high efficiency. Although the DNAi and free nanocarrier were separately unable to affect the cell viability, the nanohybrid of 20 nM of DNAi showed outstanding antineoplastic potential, which was adjusted by the ratio of the MiRGD nanocarrier to DNAi. It should be noted that, the designed nanohybrid showed a suitable specificity profile and did not affect the viability of normal cells. The results suggest that this nanohybrid may be useful for robust breast cancer treatment through targeting the BCL-2 oncogene without any side effects.
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Affiliation(s)
- Mohsen Alipour
- Department of Advanced Medical Sciences & Technologies, School of Medicine, Jahrom University of Medical Sciences, Jahrom, Iran; Department of Nanobiotechnology, Faculty of Biological Sciences,Tarbiat Modares University, Tehran, Iran.
| | - Reza Sheikhnejad
- Department of Molecular Biology, Tofigh Daru Co. (TODACO), Tehran, Iran
| | - Mohamad Hassan Fouani
- Department of Nanobiotechnology, Faculty of Biological Sciences,Tarbiat Modares University, Tehran, Iran
| | - Hassan Bardania
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Saman Hosseinkhani
- Department of Nanobiotechnology, Faculty of Biological Sciences,Tarbiat Modares University, Tehran, Iran; Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
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Kok CY, MacLean LM, Rao R, Tsurusaki S, Kizana E. Promoter Optimization Circumvents Bcl-2 Transgene-Mediated Suppression of Lentiviral Vector Production. Biomolecules 2023; 13:1397. [PMID: 37759797 PMCID: PMC10526134 DOI: 10.3390/biom13091397] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023] Open
Abstract
Lentiviral vectors are a robust gene delivery tool for inducing transgene expression in a variety of cells. They are well suited to facilitate the testing of therapeutic candidate genes in vitro, due to relative ease of packaging and ability to transduce dividing and non-dividing cells. Our goal was to identify a gene that could be delivered to the heart to protect against cancer-therapy-induced cardiotoxicity. We sought to generate a lentivirus construct with a ubiquitous CMV promoter driving expression of B-cell lymphocyte/leukemia 2 gene (Bcl-2), a potent anti-apoptotic gene. Contrary to our aim, overexpression of Bcl-2 induced cell death in the producer HEK293T cells, resulting in failure to produce usable vector titre. This was circumvented by exchanging the CMV promoter to the cardiac-specific NCX1 promoter, leading to the successful production of a lentiviral vector which could induce cardioprotective expression of Bcl-2. In conclusion, reduced expression of Bcl-2 driven by a weaker promoter improved vector yield, and led to the production of functional cardioprotective Bcl-2 in primary cardiomyocytes.
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Affiliation(s)
- Cindy Y. Kok
- Centre for Heart Research, The Westmead Institute for Medical Research, Westmead, NSW 2145, Australia; (C.Y.K.); (L.M.M.); (R.R.); (S.T.)
- Westmead Clinical School, The University of Sydney, Westmead, NSW 2145, Australia
| | - Lauren M. MacLean
- Centre for Heart Research, The Westmead Institute for Medical Research, Westmead, NSW 2145, Australia; (C.Y.K.); (L.M.M.); (R.R.); (S.T.)
| | - Renuka Rao
- Centre for Heart Research, The Westmead Institute for Medical Research, Westmead, NSW 2145, Australia; (C.Y.K.); (L.M.M.); (R.R.); (S.T.)
| | - Shinya Tsurusaki
- Centre for Heart Research, The Westmead Institute for Medical Research, Westmead, NSW 2145, Australia; (C.Y.K.); (L.M.M.); (R.R.); (S.T.)
- Westmead Clinical School, The University of Sydney, Westmead, NSW 2145, Australia
| | - Eddy Kizana
- Centre for Heart Research, The Westmead Institute for Medical Research, Westmead, NSW 2145, Australia; (C.Y.K.); (L.M.M.); (R.R.); (S.T.)
- Westmead Clinical School, The University of Sydney, Westmead, NSW 2145, Australia
- Department of Cardiology, Westmead Hospital, Westmead, NSW 2145, Australia
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Sasaki H, Hirose T, Oura T, Otsuka R, Rosales I, Ma D, Lassiter G, Karadagi A, Tomosugi T, Dehnadi A, Matsunami M, Paul SR, Reeves PM, Hanekamp I, Schwartz S, Colvin RB, Lee H, Spitzer TR, Cosimi AB, Cippà PE, Fehr T, Kawai T. Selective Bcl-2 inhibition promotes hematopoietic chimerism and allograft tolerance without myelosuppression in nonhuman primates. Sci Transl Med 2023; 15:eadd5318. [PMID: 37018417 PMCID: PMC11022838 DOI: 10.1126/scitranslmed.add5318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 03/02/2023] [Indexed: 04/07/2023]
Abstract
Hematopoietic stem cell transplantation (HSCT) has many potential applications beyond current standard indications, including treatment of autoimmune disease, gene therapy, and transplant tolerance induction. However, severe myelosuppression and other toxicities after myeloablative conditioning regimens have hampered wider clinical use. To achieve donor hematopoietic stem cell (HSC) engraftment, it appears essential to establish niches for the donor HSCs by depleting the host HSCs. To date, this has been achievable only by nonselective treatments such as irradiation or chemotherapeutic drugs. An approach that is capable of more selectively depleting host HSCs is needed to widen the clinical application of HSCT. Here, we show in a clinically relevant nonhuman primate model that selective inhibition of B cell lymphoma 2 (Bcl-2) promoted hematopoietic chimerism and renal allograft tolerance after partial deletion of HSCs and effective peripheral lymphocyte deletion while preserving myeloid cells and regulatory T cells. Although Bcl-2 inhibition alone was insufficient to induce hematopoietic chimerism, the addition of a Bcl-2 inhibitor resulted in promotion of hematopoietic chimerism and renal allograft tolerance despite using only half of the dose of total body irradiation previously required. Selective inhibition of Bcl-2 is therefore a promising approach to induce hematopoietic chimerism without myelosuppression and has the potential to render HSCT more feasible for a variety of clinical indications.
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Affiliation(s)
- Hajime Sasaki
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Takayuki Hirose
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Tetsu Oura
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Ryo Otsuka
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Ivy Rosales
- Massachusetts General Hospital, Department of Pathology, Harvard Medical School, Boston, MA 02114, USA
| | - David Ma
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Grace Lassiter
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Ahmad Karadagi
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Toshihide Tomosugi
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Abbas Dehnadi
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Masatoshi Matsunami
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Susan Raju Paul
- Massachusetts General Hospital, Department of Medicine, Harvard Medical School, Boston, M 02114, USA
| | - Patrick M. Reeves
- Massachusetts General Hospital, Department of Medicine, Harvard Medical School, Boston, M 02114, USA
| | - Isabel Hanekamp
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Samuel Schwartz
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Robert B. Colvin
- Massachusetts General Hospital, Department of Pathology, Harvard Medical School, Boston, MA 02114, USA
| | - Hang Lee
- Massachusetts General Hospital, Biostatistics Center, Boston, MA 02114, USA
| | - Thomas R. Spitzer
- Massachusetts General Hospital, Department of Medicine, Harvard Medical School, Boston, M 02114, USA
| | - A. Benedict Cosimi
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
| | - Pietro E. Cippà
- Division of Nephrology, Ente Ospedaliero Cantonale, 6900 Lugano, Switzerland
| | - Thomas Fehr
- Department of Internal Medicine, Cantonal Hospital Graubuenden, 7000 Chur, Switzerland
- Division of Nephrology, University Hospital, 8091 Zurich, Switzerland
| | - Tatsuo Kawai
- Massachusetts General Hospital, Department of Surgery, Harvard Medical School, Boston, MA 02114, USA
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Galitzia A, Murru R, Caocci G, Barabino L, Azzena A, Licheri VM, Greco M, La Nasa G. Clinical course and features of persistent polyclonal B-cell lymphocytosis with BCL-6 amplification during pregnancy. Eur Rev Med Pharmacol Sci 2023; 27:3514-3518. [PMID: 37140301 DOI: 10.26355/eurrev_202304_32124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
BACKGROUND Persistent polyclonal B-cell lymphocytosis is a rare nonmalignant disorder characterized by mild persistent lymphocyte proliferation with possible evolution to aggressive lymphoma. Its biology is not well known, but it is characterized by a specific immunophenotype with rearrangement of the BCL-2/IGH gene, whereas amplification of the BCL-6 gene has rarely been reported. Given the paucity of reports, it has been hypothesized that this disorder is associated with poor pregnancy outcomes. CASE REPORT To our knowledge, only two successful pregnancies have been described in women with this condition. We report the third successful pregnancy in a patient with PPBL and the first with amplification of the BCL-6 gene. CONCLUSIONS PPBL is still a poorly understood clinical condition with insufficient data to demonstrate an adverse effect on pregnancy. The role of BCL-6 dysregulation in the pathogenesis of PPBL and its prognostic significance are still unknown. Evolution into aggressive clonal lymphoproliferative disorders is possible and prolonged hematologic follow-up is warranted in patients with this rare clinical disorder.
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Affiliation(s)
- A Galitzia
- Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.
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Abbaskhani H, Seifati SM, Salmani T, Vojdani S, Al-Rubaye S, Yaseen R, Hajiesmaeili Y, Ghaderian SMH. Evaluating changes in the expression of BCL-2 gene, lncRNA SRA, and miR-361-3p in unexplained recurrent pregnancy loss. Nucleosides Nucleotides Nucleic Acids 2022; 41:891-899. [PMID: 35737431 DOI: 10.1080/15257770.2022.2085298] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/29/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
Unexplained recurrent pregnancy loss (RPL) composed almost half of all diagnosed miscarriage cases. As the apoptosis pathway is involved in the pregnancy process the present investigation aimed to assess the differential expression of the BCL-2 gene, SRA lncRNA, miR-361-3p in unexplained RPL patients. In this study, RNA was isolated from 50 blood samples of people with a history of RPL, and 50 blood samples of people with healthy fertility. After cDNA synthesis from these samples, alterations in the expression levels of the above-mentioned genes were examined by Real-Time PCR. Our results showed that the expression of BCL-2 and lncRNA SRA was significantly higher in the blood samples of RPL patients than in controls, while the expression of miR-361-3p was significantly downregulated. Besides, there were significant correlations between the changes in the expression of lncRNA SRA and miR-361-3p with BCL-2, in positive and negative directions, respectively. Also, miR-361-3p presented as a good diagnostic marker with the highest AUC value to discriminate between RPL and the healthy control subjects. These results proposed that ncRNAs may have a significant role in the regulation of apoptosis relates genes expression in RPL.
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Affiliation(s)
- Haleh Abbaskhani
- Biology Department, Medical Biotechnology Research Center, Ashkezar Branch, Islamic Azad University, Ashkezar, Yazd, Iran
| | - Seyed Morteza Seifati
- Biology Department, Medical Biotechnology Research Center, Ashkezar Branch, Islamic Azad University, Ashkezar, Yazd, Iran
| | - Tayyebali Salmani
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Samaneh Vojdani
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saja Al-Rubaye
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Rusul Yaseen
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Sayyed Mohammad Hossein Ghaderian
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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7
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Al-Zubaidy HFS, Majeed SR, Al-Koofee DAF. Evaluation of Bax and BCL 2 Genes Polymorphisms in Iraqi Women with Breast Cancer. Arch Razi Inst 2022; 77:799-808. [PMID: 36284943 PMCID: PMC9548264 DOI: 10.22092/ari.2022.357090.1968] [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: 12/14/2021] [Accepted: 01/16/2022] [Indexed: 05/25/2023]
Abstract
The present study aimed to examine the polymorphism -938C > A of BCL-2 gene and promoter -248G>A in the Bax gene, as well as their relationship with specific clinical-pathological characteristics, in patients with breast cancer. Blood samples were obtained from 70 patients who had been diagnosed with breast cancer and 34 healthy women as the control group. Polymorphic analysis was performed using the polymerase chain reaction-restriction fragment length polymorphism assay. Anthropometric data were assessed. Estrogen receptor (ER), human epidermal growth factor receptor 2 (Her-2), and progesterone receptor (PR) were measured by immunohistochemistry. The data of age and body mass index (BMI) demonstrated no significant variations between the two groups (P>0.05). The results of HER-2 revealed that 42.86% of breast cancer patients reflected positively for Her-2/neu expression, while 24.29% reflected negative results of Her-2/neu. Moreover, the results of ER revealed that 42.86% and 28.57% of subjects were positive and negative ER, respectively; moreover, the missing data was 28.57%. In addition, the results of PR indicated that 35.71% of patients (25/70) were positive for PR, while 28.57% reflected negative results, and the missing results were 35.71%. The genotype and allele frequencies of BCL-2(-938C>A) were not statistically significant in women with breast cancer and the control group (P=0.574, P=0.533) for heterozygous and recessive models, respectively. The genotype of BCL-2(-938C>A) in control and patients in codominant, dominant, recessive, and additive models demonstrated no significant variations of all genotypes in all groups. Genotypes and allele frequencies for Bax (-248G>A) in patients with breast cancer and control indicated that the frequencies of GG, AG, and AA genotypes in cases were 16.67%, 3.33%, and 80 %, while in controls, these values were 3.23 %, 58.06 %, and 3.23 %, respectively. The heterozygous genotype (AG) in the codominant model was OR=36.00 (95% CI 4.5608 - 284.1608; P=0.0007). In comparison with the wild type (GG), there was a 36-fold increase in the risk of breast cancer. Furthermore, the findings of this study revealed a significant correlation between Bax (-248G>A) polymorphism and breast cancer risk under the dominant and overdominant (OR=6.33; 95% CI 2.2604 -17.7452; P=0.0004, and OR=40.154; 95% CI 5.1365 - 313.8949; P=0.0004, respectively. The recessive model revealed that there was a decreased risk of breast cancer (OR= 0.167; 95% CI 0.0303 to 0.9168; P=0.039). Based on the results, it can be concluded that there were no significant variations in BCL-2 (-938C>A) polymorphism of all genotypes models when breast cancer women are compared with healthy ones. In a similar vein, there was no significant association between the BCL-2 (-938C>A) polymorphism and breast cancer risk under dominant, codominant, or recessive models.
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Affiliation(s)
| | - S R Majeed
- Faculty of Pharmacy, University of Kufa, Kufa, Iraq
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Morschhauser F, Feugier P, Flinn IW, Gasiorowski R, Greil R, Illés Á, Johnson NA, Larouche JF, Lugtenburg PJ, Patti C, Salles GA, Trněný M, de Vos S, Mir F, Samineni D, Kim SY, Jiang Y, Punnoose E, Sinha A, Clark E, Spielewoy N, Humphrey K, Bazeos A, Zelenetz AD. A phase 2 study of venetoclax plus R-CHOP as first-line treatment for patients with diffuse large B-cell lymphoma. Blood 2021; 137:600-609. [PMID: 33538797 PMCID: PMC7869186 DOI: 10.1182/blood.2020006578] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 08/24/2020] [Indexed: 12/29/2022] Open
Abstract
The phase 2 CAVALLI (NCT02055820) study assessed efficacy and safety of venetoclax, a selective B-cell lymphoma-2 (Bcl-2) inhibitor, with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) in first-line (1L) diffuse large B-cell lymphoma (DLBCL), including patients demonstrating Bcl-2 protein overexpression by immunohistochemistry (Bcl-2 IHC+). Eligible patients were ≥18 years of age and had previously untreated DLBCL, Eastern Cooperative Oncology Group performance status ≤2, and International Prognostic Index 2 to 5. Venetoclax 800 mg (days 4-10, cycle 1; days 1-10, cycles 2-8) was administered with rituximab (8 cycles) and cyclophosphamide, doxorubicin, vincristine, and prednisone (6-8 cycles) in 21-day cycles. Primary end points were safety, tolerability, and research_plete response (CR) at end of treatment (EOT). Secondary end points were progression-free survival (PFS) and overall survival. Comparative analyses used covariate-adjusted R-CHOP controls from the GOYA/BO21005 study, an appropriate contemporary benchmark for safety and efficacy. Safety and efficacy analyses included 206 patients. CR rate at EOT was 69% in the overall population and was maintained across Bcl-2 IHC+ subgroups. With a median follow-up of 32.2 months, trends were observed for improved investigator-assessed PFS for venetoclax plus R-CHOP in the overall population (hazard ratio [HR], 0.61; 95% confidence interval [CI], 0.43-0.87) and Bcl-2 IHC+ subgroups (HR, 0.55; 95% CI, 0.34-0.89) vs R-CHOP. Despite a higher incidence of grade 3/4 hematologic adverse events (86%), related mortality was not increased (2%). Chemotherapy dose intensity was similar in CAVALLI vs GOYA. The addition of venetoclax to R-CHOP in 1L DLBCL demonstrates increased, but manageable, myelosuppression and the potential of improved efficacy, particularly in high-risk Bcl-2 IHC+ patient subgroups.
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Affiliation(s)
- Franck Morschhauser
- Université de Lille, Centre Hospitalier Universitaire (CHU) Lille, Groupe de Recherche sur les Formes Injectables et les Technologies Associées (ULR 7365-GRITA), Lille, France
| | - Pierre Feugier
- CHU de Nancy, Université de Lorraine, Vandoeuvre lès Nancy, France
| | - Ian W Flinn
- Sarah Cannon Research Institute-Tennessee Oncology, Nashville, TN
| | | | - Richard Greil
- Paracelcus Medical University Salzburg, Salzburg Cancer Research Institute-Center for Clinical Cancer and Immunology Trials, Salzburg, Austria
| | - Árpád Illés
- Department of Hematology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | | | | | - Pieternella J Lugtenburg
- HOVON Lunenburg Lymphoma Phase I-II Consortium, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | - Caterina Patti
- Azienda Ospedali Riuniti Villa Sofia-Cervello, Palermo, Italy
| | - Gilles A Salles
- Hospices Civils de Lyon, Centre Hospitalier Lyon-Sud, University of Lyon, Pierre-Bénite, France
| | - Marek Trněný
- First Department of Medicine, Charles University General Hospital, Prague, Czech Republic
| | - Sven de Vos
- David Geffen School of Medicine, University of California (UCLA), Los Angeles, CA
| | - Farheen Mir
- Royal Marsden Hospital, Sutton, Surrey, United Kingdom
| | | | | | | | | | - Arijit Sinha
- Roche Products Limited, Welwyn Garden City, United Kingdom
| | - Emma Clark
- Roche Products Limited, Welwyn Garden City, United Kingdom
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Caric D, Zekic Tomas S, Filipovic N, Soljic V, Benzon B, Glumac S, Rakovac I, Vukojevic K. Expression Pattern of iNOS, BCL-2 and MMP-9 in the Hip Synovium Tissue of Patients with Osteoarthritis. Int J Mol Sci 2021; 22:ijms22031489. [PMID: 33540799 PMCID: PMC7867378 DOI: 10.3390/ijms22031489] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 01/11/2021] [Revised: 01/27/2021] [Accepted: 01/27/2021] [Indexed: 01/15/2023] Open
Abstract
Hip osteoarthritis (HOA) is characterized by degradation of the cartilage and synovitis. However, the pathohistological effects of synovial tissue inflammation on HOA are not clear. The aim of this study was to evaluate the expression of iNOS, BCL-2 and MMP-9 markers in different synovial cell populations. A total of 32 patients were evaluated retrospectively. Age, sex, height, weight, body mass index were recorded and lymphocyte, fibrocytes and macrophages were analysed in tissue sections. Osteoarthritis cartilage histopathology assessment system (OARSI), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Krenn score, Harris Hip Score (HHS) and Kellgren–Lawrence (K-L) grading of the hip joints were performed. Total hip arthroplasty was performed on 32 patients and controls. Patients were divided into two groups according to their disease severity. The tissues were immunohistochemically analysed. K-L grade and Krenn score differ between all three groups, but also between moderate and severe OA. Synovial lining cell layer, resident cells in stroma and especially inflammatory infiltration were increasing with severity of OA. iNOS expression in both intima and subintima was positively correlated with Krenn score in moderate and severe osteoarthritis (OA) groups. Expression of BCL-2 in intima of severe OA patients was positively correlated with Krenn score. In conclusion, iNOS, BCL-2 and MMP-9 are involved in the regulation of HOA. Our study indicates a relationship between the pathohistological features, the synovial inflammation and the cartilage condition at the time of hip replacement due to OA or femoral neck fracture.
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Affiliation(s)
- Davor Caric
- Department of Orthopaedics and Traumatology, University Hospital in Split, Spinciceva 1, 21000 Split, Croatia;
| | - Sandra Zekic Tomas
- Department of Pathology, Forensic Medicine and Cytology, University Hospital in Split, Spinciceva 1, 21000 Split, Croatia;
| | - Natalija Filipovic
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, Soltanska 2, 21000 Split, Croatia; (N.F.); (B.B.)
| | - Violeta Soljic
- Department of Histology and Embryology, School of Medicine, University of Mostar, Kralja Petra Kresimira IV, 88000 Mostar, Bosnia and Herzegovina;
| | - Benjamin Benzon
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, Soltanska 2, 21000 Split, Croatia; (N.F.); (B.B.)
| | - Sandro Glumac
- Department of Anesthesiology and Intensive Care, University Hospital in Split, Spinciceva 1, 21000 Split, Croatia;
| | - Ivan Rakovac
- Department of Natural and Health Sciences, Juraj Dobrila University of Pula, Pula, Zagrebačka ul. 30, 52100 Pula, Croatia;
| | - Katarina Vukojevic
- Department of Anatomy, Histology and Embryology, School of Medicine, University of Split, Soltanska 2, 21000 Split, Croatia; (N.F.); (B.B.)
- Department of Histology and Embryology, School of Medicine, University of Mostar, Kralja Petra Kresimira IV, 88000 Mostar, Bosnia and Herzegovina;
- Correspondence:
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10
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Maleki N, Mirhakimi S, Babashah S, Sayadi A, Parnian G, Hadizadeh M. Use of cellular exosomes as a new carrier in breast cancer gene therapy. Klin Onkol 2021; 34:300-305. [PMID: 34649440 DOI: 10.48095/ccko2021300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
BACKGROUND Breast cancer is recognized as a major clinical challenge in gynecological diseases worldwide. Exosomes are small vesicles derived from multicellular bodies that are secreted by many cells into the extracellular environment and thus participate in intercellular communication through the transfer of genetic information such as encoded and non-encoded RNAs to target cells. Tumor-derived exosomes are thought to be a rich source of microRNAs (miRs) that can regulate the function of other cancer cells in the tumor microenvironment. However, the exact mechanisms by which tumor cell-derived exosomes affect their neighboring cells, as well as the bio-logical function of exosomal miRs in receptor cells, are not well understood. MATERIALS AND METHODS In this study, after the overexpression of MiR-205 in breast cancer cells (MDA-MB-231 class), cell-derived exosomes were successfully isolated and characterized by electron microscopy and dynamic light scattering. RESULTS The determination of MiR-205 expression levels in exosomes secreted from engineered cells confirmed the high expression of this miR in exosomes. It was also found that the treatment of tumor exosomes carrying this miR had an apoptotic induction effect and also had a significant effect on reducing the expression of Bcl-2 gene transcript in a time-dependent manner in breast cancer cells (P < 0.001). CONCLUSION Overall, this study suggests that exosomal transfer of tumor suppressor miRs to cancer cells could be a suitable platform for nucleic acid transfer to these cells and be highly effective in cancer treatment.
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11
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Erdal ME, Görücü Yilmaz S, Ay ME, Güler Kara H, Avci Özge A, Tasdelen B. A Study Investigating the Role of 2 Candidate SNPs in Bax and Bcl-2 Genes in Alzheimer's Disease. P R Health Sci J 2020; 39:264-269. [PMID: 33031695] [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] [Indexed: 06/11/2023]
Abstract
OBJECTIVE The proto-oncogene Bax (Bcl-2-associated X protein) and related protein Bcl-2 (B-cell chronic lymphocytic leukemia/lymphoma-2) genes are triggers of apoptosis in Alzheimer's disease (AD). The balance of these proteins has an important role in the death or life of a neuronal cell, and the functional polymorphisms in genes expressing these proteins have been found to promote apoptosis. To investigate the role of Bax and Bcl-2 genes in AD, we examined the presence of the 2 polymorphisms in peripheral blood. To our knowledge, this is the first clinical association study of these 2 functional SNPs using the peripheral blood of patients with AD. METHODS Bax (rs4645878) and Bcl-2 (rs2279115) in Alzheimer's patients (N = 132) and healthy controls (N = 109), aged 65 to 85 years, were analyzed by qPCR (Quantitative Polymerase Chain Reaction) using TaqMan probe technology. Statistical analyses were done using SPSS, 11.5. The differences between groups were analyzed using an independent-samples t test. The relationships between genotypes and alleles were analyzed using chi-square or likelihood ratio test. The Hardy-Weinberg balance was checked for the patient and control groups. A p-value of less than 0.05 was taken as significant. RESULTS Sporadic AD patients and non-demented age matched control subjects were genotyped in this case-control study. No statistically significant relationship was found between the patients and controls for allele or genotype frequencies (p>0.05). CONCLUSION Our data suggest that these two polymorphisms do not contribute to AD in the population from the Mersin region of the Eastern Mediterranean. Further studies with larger sample sizes must be conducted to ascertain the association between the 2 polymorphisms.
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Affiliation(s)
- Mehmet Emin Erdal
- Faculty of Medicine, Department of Medical Biology, Mersin University, Mersin, Turkey
| | - Senay Görücü Yilmaz
- Faculty of Health Sciences, Department of Nutrition and Dietetics, Gaziantep University, Gaziantep, Turkey
| | - Mustafa Ertan Ay
- Faculty of Medicine, Department of Medical Biology, Mersin University, Mersin, Turkey
| | - Hale Güler Kara
- Faculty of Medicine, Department of Medical Biology, Ege University, İzmir, Turkey
| | - Aynur Avci Özge
- Faculty of Medicine, Department of Neurology, Mersin University, Mersin, Turkey
| | - Bahar Tasdelen
- Faculty of Medicine, Department of Biostatistics and Information, Mersin University, Mersin, Turkey
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12
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Zhang J, Shi Y, Zhao M, Hu H, Huang H. Activation-induced cytidine deaminase overexpression in double-hit lymphoma: potential target for novel anticancer therapy. Sci Rep 2020; 10:14164. [PMID: 32843697 PMCID: PMC7447639 DOI: 10.1038/s41598-020-71058-y] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 07/29/2020] [Indexed: 12/12/2022] Open
Abstract
Activation-induced cytidine deaminase (AID) is one kind of the mutant enzymes, which target regulating the immunoglobulin (Ig) gene in Burkitt's lymphoma to initiate class switch recombination (CSR), resulting in c-Myc chromosomal translocation. However, it is not clear that whether AID induces c-Myc/IgH translocation in double-hit lymphoma (DHL) with c-Myc gene translocation. In this study, the AID in DHL tissues and classical diffuse large b-cell lymphoma (DLBCL) tissues were compared. The results suggested that AID is of important value in predicting DHL, stronger CSR of AID was observed in DHL patients, which exhibited AID overexpression and c-Myc gene translocation of DHL after CSR induction. It is concluded that AID directly induces CSR in DHL and may result in c-Myc gene translocation. Targeting AID may be a good treatment regimen for DHL.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Cytidine Deaminase/biosynthesis
- Cytidine Deaminase/genetics
- Cytidine Deaminase/physiology
- Enzyme Induction/drug effects
- Female
- Gene Expression Regulation, Neoplastic/drug effects
- Genes, bcl-2
- Genes, myc
- Humans
- Immunoglobulin Class Switching/genetics
- Immunoglobulin Isotypes/biosynthesis
- Immunoglobulin Isotypes/blood
- Immunoglobulin Isotypes/genetics
- Kaplan-Meier Estimate
- Ki-67 Antigen/genetics
- Lipopolysaccharides/pharmacology
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/enzymology
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/mortality
- Male
- Middle Aged
- Molecular Targeted Therapy
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Neoplasm Proteins/physiology
- Prognosis
- Proto-Oncogene Proteins c-bcl-6/genetics
- Translocation, Genetic
- Up-Regulation/drug effects
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Affiliation(s)
- Jingcheng Zhang
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejian, People's Republic of China
- Department of Hematology, Jinhua Hospital of Zhejiang University (Jinhua Municipal Central Hospital), Jinhua, 321100, Zhejiang, People's Republic of China
| | - Yifen Shi
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Mingzhe Zhao
- Department of Hematology, Jinhua Hospital of Zhejiang University (Jinhua Municipal Central Hospital), Jinhua, 321100, Zhejiang, People's Republic of China
| | - Huixian Hu
- Department of Hematology, Jinhua Hospital of Zhejiang University (Jinhua Municipal Central Hospital), Jinhua, 321100, Zhejiang, People's Republic of China.
| | - He Huang
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, Zhejian, People's Republic of China.
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13
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El-Hefny IM, Al Senosy NK, Hozayen WG, Ahmed AE, Diab A, Basal WT. Evaluation of the Cytotoxicity and Apoptotic Induction in Human Liver Cell Lines Exposed to Three Food Additives. Recent Pat Food Nutr Agric 2020; 11:193-201. [PMID: 32065108 DOI: 10.2174/2212798411666200217124630] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/26/2019] [Accepted: 12/08/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Rapid lifestyle, especially among people living in urban areas, has led to increasing reliance on the processed food market. Unfortunately, harmful effects caused by the excessive use of food additives in such type of industry are often neglected. OBJECTIVE This proposal investigates in vitro cytotoxic and apoptotic effects of three food preservatives commonly consumed in daily meals; sodium sulphite, boric acid, and benzoic acid. METHODS The effect of the three preservatives on cell viability was tested on two different cell lines; normal liver cell line THLE2 and human hepatocellular carcinoma cancer cell line HepG2 using MTT assay. Cell cycle arrest was measured using flow cytometry by propidium iodide. Measurement of expression levels of two central genes, p53 and bcl-2 that play key roles in cell cycle and apoptosis was carried out in HepG2 cells using real time-PCR. RESULTS Although the effect was more significantly realized in the HepG2 cell line, the viability of both cell lines was decreased by all of the three tested compounds. Flow cytometric analysis of HepG2 cells treated with sodium sulphite, boric acid, and benzoic acid has revealed an increase in G2/M phase cell cycle arrest. In Sodium sulphite and boric acid-treated cells, expression levels of p53 were up-regulated, while that of the Bcl2 was significantly down-regulated. On the other hand, Benzoic acid has shown an anti-apoptotic feature based on the increased expression levels of Bcl-2 in treated cells. CONCLUSION In conclusion, all of the tested compounds have decreased the cell line viability and induced both cell cycle arrest and apoptotic events indicating their high potential of being cytotoxic and genotoxic materials.
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Affiliation(s)
- Ingy M El-Hefny
- Faculty of Biotechnology, October University for Modern Sciences and Arts, (MSA), Wahat Road, 6th of October City, Egypt
| | - Neima K Al Senosy
- Department of Genetics, Faculty of Agriculture, Ain Shams University, Shubra el-Kheima, Egypt
| | - Walaa G Hozayen
- Beni-Suef University, Faculty of Postgraduate Studies for Advanced Sciences, Department of Biotechnology and Life Sciences, Beni-Suef, Egypt
| | - Amr E Ahmed
- Beni-Suef University, Faculty of Postgraduate Studies for Advanced Sciences, Department of Biotechnology and Life Sciences, Beni-Suef, Egypt
| | - Ayman Diab
- Faculty of Biotechnology, October University for Modern Sciences and Arts, (MSA), Wahat Road, 6th of October City, Egypt
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14
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Kønig SM, Rissler V, Terkelsen T, Lambrughi M, Papaleo E. Alterations of the interactome of Bcl-2 proteins in breast cancer at the transcriptional, mutational and structural level. PLoS Comput Biol 2019; 15:e1007485. [PMID: 31825969 PMCID: PMC6927658 DOI: 10.1371/journal.pcbi.1007485] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 12/23/2019] [Accepted: 10/12/2019] [Indexed: 12/11/2022] Open
Abstract
Apoptosis is an essential defensive mechanism against tumorigenesis. Proteins of the B-cell lymphoma-2 (Bcl-2) family regulate programmed cell death by the mitochondrial apoptosis pathway. In response to intracellular stress, the apoptotic balance is governed by interactions of three distinct subgroups of proteins; the activator/sensitizer BH3 (Bcl-2 homology 3)-only proteins, the pro-survival, and the pro-apoptotic executioner proteins. Changes in expression levels, stability, and functional impairment of pro-survival proteins can lead to an imbalance in tissue homeostasis. Their overexpression or hyperactivation can result in oncogenic effects. Pro-survival Bcl-2 family members carry out their function by binding the BH3 short linear motif of pro-apoptotic proteins in a modular way, creating a complex network of protein-protein interactions. Their dysfunction enables cancer cells to evade cell death. The critical role of Bcl-2 proteins in homeostasis and tumorigenesis, coupled with mounting insight in their structural properties, make them therapeutic targets of interest. A better understanding of gene expression, mutational profile, and molecular mechanisms of pro-survival Bcl-2 proteins in different cancer types, could help to clarify their role in cancer development and may guide advancement in drug discovery. Here, we shed light on the pro-survival Bcl-2 proteins in breast cancer using different bioinformatic approaches, linking -omics with structural data. We analyzed the changes in the expression of the Bcl-2 proteins and their BH3-containing interactors in breast cancer samples. We then studied, at the structural level, a selection of interactions, accounting for effects induced by mutations found in the breast cancer samples. We find two complexes between the up-regulated Bcl2A1 and two down-regulated BH3-only candidates (i.e., Hrk and Nr4a1) as targets associated with reduced apoptosis in breast cancer samples for future experimental validation. Furthermore, we predict L99R, M75R as damaging mutations altering protein stability, and Y120C as a possible allosteric mutation from an exposed surface to the BH3-binding site.
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Affiliation(s)
- Simon Mathis Kønig
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Vendela Rissler
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Thilde Terkelsen
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Matteo Lambrughi
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Elena Papaleo
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen, Denmark
- Translational Disease Systems Biology, Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Protein Research University of Copenhagen, Copenhagen, Denmark
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15
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Taylor J, Sendino M, Gorelick AN, Pastore A, Chang MT, Penson AV, Gavrila EI, Stewart C, Melnik EM, Herrejon Chavez F, Bitner L, Yoshimi A, Lee SCW, Inoue D, Liu B, Zhang XJ, Mato AR, Dogan A, Kharas MG, Chen Y, Wang D, Soni RK, Hendrickson RC, Prieto G, Rodriguez JA, Taylor BS, Abdel-Wahab O. Altered Nuclear Export Signal Recognition as a Driver of Oncogenesis. Cancer Discov 2019; 9:1452-1467. [PMID: 31285298 PMCID: PMC6774834 DOI: 10.1158/2159-8290.cd-19-0298] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/20/2019] [Accepted: 07/01/2019] [Indexed: 12/17/2022]
Abstract
Altered expression of XPO1, the main nuclear export receptor in eukaryotic cells, has been observed in cancer, and XPO1 has been a focus of anticancer drug development. However, mechanistic evidence for cancer-specific alterations in XPO1 function is lacking. Here, genomic analysis of 42,793 cancers identified recurrent and previously unrecognized mutational hotspots in XPO1. XPO1 mutations exhibited striking lineage specificity, with enrichment in a variety of B-cell malignancies, and introduction of single amino acid substitutions in XPO1 initiated clonal, B-cell malignancy in vivo. Proteomic characterization identified that mutant XPO1 altered the nucleocytoplasmic distribution of hundreds of proteins in a sequence-specific manner that promoted oncogenesis. XPO1 mutations preferentially sensitized cells to inhibitors of nuclear export, providing a biomarker of response to this family of drugs. These data reveal a new class of oncogenic alteration based on change-of-function mutations in nuclear export signal recognition and identify therapeutic targets based on altered nucleocytoplasmic trafficking. SIGNIFICANCE: Here, we identify that heterozygous mutations in the main nuclear exporter in eukaryotic cells, XPO1, are positively selected in cancer and promote the initiation of clonal B-cell malignancies. XPO1 mutations alter nuclear export signal recognition in a sequence-specific manner and sensitize cells to compounds in clinical development inhibiting XPO1 function.This article is highlighted in the In This Issue feature, p. 1325.
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MESH Headings
- Active Transport, Cell Nucleus
- Animals
- Cell Proliferation
- Cell Transformation, Neoplastic
- Disease Models, Animal
- Gene Expression
- Genes, bcl-2
- Genes, myc
- Humans
- Karyopherins/chemistry
- Karyopherins/genetics
- Karyopherins/metabolism
- Leukemia, B-Cell/genetics
- Leukemia, B-Cell/metabolism
- Leukemia, B-Cell/mortality
- Leukemia, B-Cell/pathology
- Mice
- Mutation
- Nuclear Export Signals
- Organ Specificity/genetics
- Protein Binding
- Receptors, Cytoplasmic and Nuclear/chemistry
- Receptors, Cytoplasmic and Nuclear/genetics
- Receptors, Cytoplasmic and Nuclear/metabolism
- Structure-Activity Relationship
- Exportin 1 Protein
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Affiliation(s)
- Justin Taylor
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Maria Sendino
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, Barrio Sarriena s/n, Leioa, Spain
| | - Alexander N Gorelick
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Alessandro Pastore
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Matthew T Chang
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Alexander V Penson
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Elena I Gavrila
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Connor Stewart
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Ella M Melnik
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | | | - Lillian Bitner
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Akihide Yoshimi
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Stanley Chun-Wei Lee
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Daichi Inoue
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Bo Liu
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Xiao J Zhang
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Anthony R Mato
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Ahmet Dogan
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Michael G Kharas
- Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Yuhong Chen
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, Wisconsin
| | - Demin Wang
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, Wisconsin
| | - Rajesh K Soni
- Microchemistry and Proteomics Core Facility, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Ronald C Hendrickson
- Microchemistry and Proteomics Core Facility, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Gorka Prieto
- Department of Communications Engineering, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - Jose A Rodriguez
- Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country, Barrio Sarriena s/n, Leioa, Spain
| | - Barry S Taylor
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
- Marie-Josée and Henry R. Kravis Center for Molecular Oncology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Omar Abdel-Wahab
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, New York.
- Leukemia Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
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16
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Sohur US, Dixit MN, Chen CL, Byrom MW, Kerr LD. Rel/NF-kappaB represses bcl-2 transcription in pro-B lymphocytes. Gene Expr 2018; 8:219-29. [PMID: 10794524 PMCID: PMC6157363] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
The mechanisms controlling programmed cell death (PCD) during early B cell development are not well understood. Members of both the Bcl-2 family of apoptosis-related proteins and the nuclear factor-kappa B/Rel (NF-kappaB/Rel) family of transcription factors are expressed differentially during B cell development. To date, however, no direct interactions between these two families have been demonstrated. The FL5.12 cell line represents a model for progenitor B cell development. Such cells reproducibly undergo PCD upon IL-3 withdrawal. The signal to enter the apoptotic pathway is mediated by a shift in the ratio of Bcl-2:Bax. While bax levels remain constant, bcl-2 transcription rate, steady-state mRNA, and protein levels decrease. Analysis of the bcl-2 promoter reveals 3 kappaB sites functionally able to bind kappaB factors from FL5.12 nuclear extracts. Cotransfection studies demonstrate that NF-kappaB factors can repress bcl-2 transcription and that site-directed mutagenesis of the kappaB motifs abolishes this repression. These studies suggest that NF-kappaB mediates PCD in pro-B cells through transcriptional repression of the survival gene bcl-2, thus shifting the bcl-2:bax ratio in favor of death-promoting complexes.
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Affiliation(s)
- U. Shivraj Sohur
- *Department of Microbiology & Immunology, Vanderbilt University School of Medicine, 1161 21st Ave. South, Nashville, TN 37232-2363
| | - Mrinalini N. Dixit
- †Department of Cell Biology, Vanderbilt University School of Medicine, 1161 21st Ave. South, Nashville, TN 37232-2363
| | - Chih-Li Chen
- *Department of Microbiology & Immunology, Vanderbilt University School of Medicine, 1161 21st Ave. South, Nashville, TN 37232-2363
| | - Mike W. Byrom
- *Department of Microbiology & Immunology, Vanderbilt University School of Medicine, 1161 21st Ave. South, Nashville, TN 37232-2363
| | - Lawrence D. Kerr
- *Department of Microbiology & Immunology, Vanderbilt University School of Medicine, 1161 21st Ave. South, Nashville, TN 37232-2363
- †Department of Cell Biology, Vanderbilt University School of Medicine, 1161 21st Ave. South, Nashville, TN 37232-2363
- Address correspondence to Lawrence D. Kerr, Vanderbilt University, School of Medicine, MCN A-4314, 1161 21st Ave. South, Nashville, TN 37232-2363. Tel: (615) 343-2568; Fax: (615) 343-2569; E-mail:
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17
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Génin V, Enfrein A, Lecouffe-Desprets M, Gallas P, Bossard C, Moreau A, Ansquer C, Hamidou M, Agard C, Néel A. Hot lungs, bitter cherry: intravascular lymphoma. QJM 2018; 111:53-54. [PMID: 29186525 DOI: 10.1093/qjmed/hcx224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Indexed: 11/13/2022] Open
Affiliation(s)
- V Génin
- Service de Médecine Interne, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - A Enfrein
- Service de Médecine Interne, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - M Lecouffe-Desprets
- Service de Médecine Interne, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - P Gallas
- Service d'Hématologie Clinique, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - C Bossard
- Service d'Anatomie et Cytologie Pathologiques, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - A Moreau
- Service d'Anatomie et Cytologie Pathologiques, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - C Ansquer
- Service de Médecine Nucléaire, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - M Hamidou
- Service de Médecine Interne, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - C Agard
- Service de Médecine Interne, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
| | - A Néel
- Service de Médecine Interne, Hôtel-Dieu, CHU de Nantes, 1 place Alexis Ricordeau, Nantes 44093, France
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18
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Tao H, Chen F, Liu H, Hu Y, Wang Y, Li H. Wnt/β-catenin signaling pathway activation reverses gemcitabine resistance by attenuating Beclin1-mediated autophagy in the MG63 human osteosarcoma cell line. Mol Med Rep 2017; 16:1701-1706. [PMID: 28656199 PMCID: PMC5562091 DOI: 10.3892/mmr.2017.6828] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 02/24/2017] [Indexed: 12/17/2022] Open
Abstract
Anaberrant Wnt/β-catenin signaling pathway is frequently implicated in tumorigenesis. However, whether the Wnt/β‑catenin pathway plays a role in resistance to antitumor chemotherapy drugs remains unknown. In the present study, the process of autophagy was assessed following overexpression of the autophagy‑associated gene Beclin 1 in gemcitabine‑induced MG63 human osteosarcoma cells. Autophagy‑associated gene expression was measured following activation or inhibition of the Wnt/β‑catenin pathway in gemcitabine‑induced MG63 cells using reverse transcription‑quantitative polymerase chain reaction. In addition, the percentage of MG63 cell apoptosis was measured by flow cytometry following Wnt/β‑catenin pathway activation or inhibition. The results demonstrated that Beclin 1 overexpression induced autophagy and reduced gemcitabine‑induced apoptosis in MG63 human cell line. Furthermore, activation of the Wnt/β‑catenin signaling pathway attenuated autophagy and enhanced gemcitabine‑induced apoptosis. Additionally, the expression of Beclin 1 was reduced following Wnt/β‑catenin signaling pathway activation. The present study demonstrated that activation of the Wnt/β‑catenin signaling pathway may rescue chemotherapy drug resistance by downregulating the expression of Beclin 1.
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Affiliation(s)
- Hao Tao
- Department of Trauma Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Feng Chen
- Department of Trauma Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Haifei Liu
- Department of Trauma Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Yanling Hu
- Department of Trauma Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Yingzhen Wang
- Department of Joint Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
| | - Haiyan Li
- Department of Joint Surgery, Affiliated Hospital of Qingdao University, Qingdao, Shandong 266000, P.R. China
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Wang M, Yang G, Jiang X, Lu D, Mei H, Chen B. Peroxisome Proliferator-Activated Receptor-γ Coactivator-1α (PGC-1α) Regulates the Expression of B-Cell Lymphoma/Leukemia-2 (Bcl-2) and Promotes the Survival of Mesenchymal Stem Cells (MSCs) via PGC-1α/ERRα Interaction in the Absence of Serum, Hypoxia, and High Glucose Conditions. Med Sci Monit 2017; 23:3451-3460. [PMID: 28711948 PMCID: PMC5525574 DOI: 10.12659/msm.902183] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 12/08/2016] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND To study the effect of estrogen-related receptor α (ERRα) and peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) on mesenchymal stem cells (MSCs) apoptosis, and further investigated its detailed molecular mechanisms in the absence of serum, hypoxia, and high glucose conditions. MATERIAL AND METHODS In our study, we first evaluated the expression rates of CD14, CD34, CD45, CD44, CD29, and Sca-1 surface markers on MSCs by flow cytometry. Then, the ability of osteogenic and fatty differentiation of MSCs was determined by osteogenic differentiation and adipogenesis reagent kit. Next, Annexin V-APC/7-AAD apoptosis kit was used for detecting the apoptosis rate of MSCs. RT-PCR and Western blotting were used for detection of mRNA expression and proteins expression, respectively. RESULTS Our data showed that the MSCs used in our study were capable of self-renewal and differentiating into many cell lineages, such as osteogenic differentiation and adipogenesis. Our results further showed that over-expression of PGC-1α could protect MSCs from apoptosis induced by rotenone. We also found that PGC-1α over-expression could enhance the expression of anti-apoptotic gene Bcl-2, and inhibit the expression of pro-apoptotic gene Bax in MSCs. In addition, our data demonstrated that PGC-1α could induce upregulation of Bcl-2 and further promote the survival of MSCs by interacting with ERRα. CONCLUSIONS In the absence of serum, hypoxia and high glucose conditions, PGC-1α can regulate the expression of Bcl-2 and promote the survival of MSCs via PGC-1α/ERRα interaction.
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Affiliation(s)
- Min Wang
- Department of Endocrinology, Southwest Hospital, Third Military Medical University, Chongqing, P.R. China
| | - Guangxin Yang
- Department of Endocrinology, Southwest Hospital, Third Military Medical University, Chongqing, P.R. China
| | - Xiaoyan Jiang
- Department of Endocrinology, Southwest Hospital, Third Military Medical University, Chongqing, P.R. China
| | - Debin Lu
- Department of Endocrinology, Southwest Hospital, Third Military Medical University, Chongqing, P.R. China
| | - Hao Mei
- Center of Outcomes Research and Evaluation, Yale-New Haven Hospital, New Haven, CT, U.S.A
| | - Bing Chen
- Department of Endocrinology, Southwest Hospital, Third Military Medical University, Chongqing, P.R. China
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20
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Cobbina SJ, Mao G, Zhao T, Xu H, Zhang Z, Liu H, Zou Y, Wu X, Yang L. Modulation of N-Methyl-D-Aspartate Receptors (NMDAR), Bcl-2 and C-Fos Gene Expressions on Exposure to Individual and Mixtures of Low Concentration Metals in Zebrafish (Danio rerio). Arch Environ Contam Toxicol 2017; 72:418-427. [PMID: 28255683 DOI: 10.1007/s00244-016-0352-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 12/21/2016] [Indexed: 06/06/2023]
Abstract
Currently, there is limited information on the toxicity of low concentration of metal mixtures in the environment. Of particular interest is the effect of low levels of metal mixtures on neurodevelopment of aquatic organisms. This study reports the neurological gene expressions after exposing zebrafish embryos to low concentration toxic heavy metals, 120 h post fertilization (hpf). Embryos were exposed to low concentration individual and mixtures of lead (Pb), mercury (Hg), arsenic (As), and cadmium (Cd). Quantitative real-time PCR was used to assess gene expressions. The findings of this study confirmed that exposure to low concentration heavy metals upregulated N-methyl-D-aspartate (NMDA) receptor subunits NMDAR2A (NR2A), NMDAR2B (NR2B), and NMDAR2D (NR2D) and B cell lymphoma (Bcl-2) genes. NR2A genes were significantly upregulated by 90 and 74%, respectively, on exposure to Pb + As and Pb + Cd. NR2B genes were upregulated by 85.3, 68.6, 62.7, and 62.7% on exposure to As, Pb + Hg, Pb + As, and Pb + Cd, respectively. Exposure to As, Pb + Cd, and Pb + Hg + As significantly upregulated Bcl-2 genes by 2.01-, 1.84-, and 1.80-fold, respectively. NR1A and C-fos gene expressions were not significantly different from control. Upregulation of NMDAR subunits and Bcl-2 genes in this study was largely a counter measure against insults from exposure to low concentration heavy metals. Principal component analysis confirmed the influence of low concentration individual and mixtures of Pb, Hg, As, and Cd on gene expression of NMDAR subunits and Bcl-2. These data suggest that altered expression of NMDA receptor subunits and Bcl-2 genes may explain toxicity of low concentration individual and mixtures of Pb, Hg, As, and Cd.
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Affiliation(s)
- Samuel Jerry Cobbina
- School of the Environment and Safety Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, Jiangsu, China
| | - Guanghua Mao
- School of the Environment and Safety Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, Jiangsu, China
| | - Ting Zhao
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, China
| | - Hai Xu
- School of the Environment and Safety Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, Jiangsu, China
| | - Zhen Zhang
- School of the Environment and Safety Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, Jiangsu, China
| | - Hongyang Liu
- School of the Environment and Safety Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, Jiangsu, China
| | - Yanmin Zou
- School of the Environment and Safety Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, Jiangsu, China
| | - Xiangyang Wu
- School of the Environment and Safety Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, Jiangsu, China.
| | - Liuqing Yang
- School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang, 212013, China
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21
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Haghir H, Hami J, Lotfi N, Peyvandi M, Ghasemi S, Hosseini M. Expression of apoptosis-regulatory genes in the hippocampus of rat neonates born to mothers with diabetes. Metab Brain Dis 2017; 32:617-628. [PMID: 28078553 DOI: 10.1007/s11011-017-9950-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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] [Received: 08/01/2016] [Accepted: 01/03/2017] [Indexed: 01/01/2023]
Abstract
Diabetes during pregnancy impairs the development of the central nervous system (CNS) and causes cognitive and behavioral abnormalities in offspring. However, the exact mechanism by which the maternal diabetes affects the development of the brain remains to be elucidated. The aim of the present study was to investigate the effects of maternal diabetes in pregnancy on the expression of Bcl-2 and Bax genes and the numerical density of degenerating dark neurons (DNs) in the hippocampus of offspring at the first postnatal two weeks. Wistar female rats were maintained diabetic from a week before pregnancy through parturition and male offspring was sacrificed at P0, P7, and P14. Our findings demonstrated a significant down-regulation in the hippocampal expression of Bcl-2 in the diabetic group newborns (P < 0.05). In contrast, the mRNA expression of Bax was markedly up-regulated in the offspring born to diabetic dams at all of studied time-points (P < 0.05). Moreover, we found a striking increase in the numerical density of DNs in the various subfields of hippocampus of diabetic group pups (P < 0.05). The results of the present study revealed that maternal hyperglycemia during gestational period may result in disturbances in the expression of Bcl-2 and Bax genes as two important genes in neuronal apoptosis regulation and induces the production of DNs in the developing hippocampus of neonatal rats. These disturbances may be a reason for the cognitive, structural, and behavioral anomalies observed in offspring born to diabetic mothers. Furthermore, the control of maternal glycaemia by insulin administration in most cases normalized these negative impacts.
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Affiliation(s)
- Hossein Haghir
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Genetic Research Center (MGRC), School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Javad Hami
- Department of Anatomical Sciences, School of Medicine, Birjand University of Medical Sciences, Ghaffari St., Birjand, Iran.
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran.
| | - Nassim Lotfi
- Department of Anatomical Sciences, School of Medicine, Birjand University of Medical Sciences, Ghaffari St., Birjand, Iran
| | - Mostafa Peyvandi
- Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Simagol Ghasemi
- Microanatomy Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehran Hosseini
- Department of Public Health, Deputy of Research and Technology, Research Centre of Experimental Medicine, Birjand University of Medical Sciences, Birjand, Iran
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22
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Chen Y, Sun P, Guo X, Gao A. MiR-34a, a promising novel biomarker for benzene toxicity, is involved in cell apoptosis triggered by 1,4-benzoquinone through targeting Bcl-2. Environ Pollut 2017; 221:256-265. [PMID: 27939626 DOI: 10.1016/j.envpol.2016.11.072] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/23/2016] [Accepted: 11/25/2016] [Indexed: 06/06/2023]
Abstract
Exposure to benzene is inevitable, and concerns regarding the adverse health effects of benzene have been raised. Most investigators found that benzene exposure induced hematotoxicity. In this regard, Our study aimed to explore a novel potential biomarker of adverse health effects following benzene exposure and the toxic mechanisms of benzene metabolites in vitro. This study consisted of 314 benzene-exposed workers and 288 control workers, an air benzene concentration of who were 2.64 ± 1.60 mg/m3 and 0.05 ± 0.01 mg/m3, respectively. In this population-based study, miR-34a expression was elevated in benzene-exposed workers. The correlation of miR-34a with the airborne benzene concentration, S-phenylmercapturic acid (S-PMA) and trans, trans-muconic acid (t, t-MA), all of which reflect benzene exposure, was found. Correlation analysis indicated that miR-34a was associated with peripheral blood count, alanine transaminase (ALT) and oxidative stress. Furthermore, multivariate analysis demonstrated that miR-34a expression was strongly associated with white blood cell count (structure loadings = 0.952). In population-based study, miR-34a had the largest contribution to altered peripheral blood counts, which reflect benzene-induced hematotoxicity. The role of miR-34a in benzene toxicity was assessed using lentiviral vector transfection. Results revealed that 1,4-benzoquinone induced abnormal cell apoptosis and simultaneously upregulated miR-34a accompanied with decreased Bcl-2. Finally, inhibition of miR-34a elevated Bcl-2 and decreased 1,4-benzoquinone-induced apoptosis. In conclusion, miR-34a was observed to be involved in benzene-induced hematotoxicity by targeting Bcl-2 and could be regarded as a potential novel biomarker for benzene toxicity.
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Affiliation(s)
- Yujiao Chen
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Pengling Sun
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Xiaoli Guo
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Ai Gao
- Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
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Eichhorn L, Nietzel C, Schröder S, Siekmann U, Koch A, Weber S. A single air dive induces apoptotic gene regulation but no increase in nucleosomes. Undersea Hyperb Med 2016; 43:813-819. [PMID: 28777518] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
BACKGROUND Oxidative stress caused by elevated partial pressure of oxygen during diving is a major contributor of inflammation and apoptosis. The underlying molecular mechanisms are poorly understood. The aim of the study was to describe apoptotic gene regulation induced by a single air dive. METHODS 19 healthy volunteers were exposed to a 30-minute dive at 2.8 atmospheres (ATA) absolute in a pressure chamber in ambient air. Blood samples were obtained before, directly after and 24 hours after exposure. Gene expressions of Bcl-2, Bcl-xL and Bax were analyzed in mononuclear cell extracts by real-time polymerase chain reaction (PCR). Circulating nucleosomes were measured in serum before exposure and 24 hours afterward. RESULTS The pro-apoptotic Bax expression was not significantly increased (p=0.74) directly after the dive but was induced (2.22 ± 0.85-fold) after 24 hours (p ≤ 0.01). Bcl-2 expression was not changed significantly directly after (p = 0.11) but was 1.88 ± 1.08-fold higher after 24 hours (p ≤ 0.01). Bcl-xL expression was not elevated significantly (p = 0.54) but was 2.04 ± 1.02-fold higher after 24 hours (p ≤ 0.01). The level of nucleosomes did not change after 24 hours compared to baseline. CONCLUSION A single air dive at 2.8 ATA for 30 minutes causes an upregulation of pro- and anti-apoptotic genes but did not elevate circulating nucleosomes. In a single air dive the upregulation of anti-apoptotic Bcl-2 family members may counteract the pro-apoptotic potential of Bax.
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Affiliation(s)
- Lars Eichhorn
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital of Bonn, Germany
| | - Christian Nietzel
- Department of Trauma and Orthopedic Surgery, Federal Armed Forces Hospital Westerstede, Germany
| | - Stefan Schröder
- Department of Anaesthesiology and Intensive Care Medicine, Krankenhaus Dueren, Germany
| | - Ullrich Siekmann
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital of Aachen, Germany
| | - Andreas Koch
- Section for Maritime Medicine, German Naval Medical Institute and Christian-Albrechts-University Kiel, Germany
| | - Stefan Weber
- Department of Anaesthesiology and Intensive Care Medicine, University Hospital of Bonn, Germany
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Klee P, Bosco D, Guérardel A, Somm E, Toulotte A, Maechler P, Schwitzgebel VM. Activation of Nicotinic Acetylcholine Receptors Decreases Apoptosis in Human and Female Murine Pancreatic Islets. Endocrinology 2016; 157:3800-3808. [PMID: 27471776 DOI: 10.1210/en.2015-2057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Type 1 diabetes (T1DM) results from destruction of most insulin-secreting pancreatic β-cells. The persistence of β-cells decades after the onset of the disease indicates that the resistance of individual cells to the autoimmune insult is heterogeneous and might depend on the metabolic status of a cell at a given moment. The aim of this study is to investigate whether activation of nicotinic acetylcholine receptors (nACh-Rs) could increase β-cell resistance against the adverse environment prevailing at the onset of T1DM. Here, we show that nACh-R activation by nicotine and choline, 2 agonists of the receptor, decreases murine and human β-cell apoptosis induced by proinflammatory cytokines known to be present in the islet environment at the onset of T1DM. The protective mechanism activated by nicotine and choline involves attenuation of mitochondrial outer membrane permeabilization via modulation of endoplasmic reticulum stress, of the activity of B-cell lymphoma 2 family proteins and cytoplasmic calcium levels. Local inflammation and endoplasmic reticulum stress being key determinants of β-cell death in T1DM, we conclude that pharmacological activation of nACh-R could represent a valuable therapeutic option in the modulation of β-cell death in T1DM.
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Affiliation(s)
- Philippe Klee
- Service of Development and Growth (P.K., A.G., E.S., A.T., V.S.), Department of Pediatrics, University Hospital of Geneva and Diabetes Center, University of Geneva, 1211 Geneva, Switzerland; Cell Isolation and Transplantation Center (D.B.), Department of Surgery, University Hospital of Geneva and University of Geneva, 1205 Geneva, Switzerland; and Department of Cell Physiology and Metabolism (P.M.), Geneva University Medical Center, 1205 Geneva, Switzerland
| | - Domenico Bosco
- Service of Development and Growth (P.K., A.G., E.S., A.T., V.S.), Department of Pediatrics, University Hospital of Geneva and Diabetes Center, University of Geneva, 1211 Geneva, Switzerland; Cell Isolation and Transplantation Center (D.B.), Department of Surgery, University Hospital of Geneva and University of Geneva, 1205 Geneva, Switzerland; and Department of Cell Physiology and Metabolism (P.M.), Geneva University Medical Center, 1205 Geneva, Switzerland
| | - Audrey Guérardel
- Service of Development and Growth (P.K., A.G., E.S., A.T., V.S.), Department of Pediatrics, University Hospital of Geneva and Diabetes Center, University of Geneva, 1211 Geneva, Switzerland; Cell Isolation and Transplantation Center (D.B.), Department of Surgery, University Hospital of Geneva and University of Geneva, 1205 Geneva, Switzerland; and Department of Cell Physiology and Metabolism (P.M.), Geneva University Medical Center, 1205 Geneva, Switzerland
| | - Emmanuel Somm
- Service of Development and Growth (P.K., A.G., E.S., A.T., V.S.), Department of Pediatrics, University Hospital of Geneva and Diabetes Center, University of Geneva, 1211 Geneva, Switzerland; Cell Isolation and Transplantation Center (D.B.), Department of Surgery, University Hospital of Geneva and University of Geneva, 1205 Geneva, Switzerland; and Department of Cell Physiology and Metabolism (P.M.), Geneva University Medical Center, 1205 Geneva, Switzerland
| | - Audrey Toulotte
- Service of Development and Growth (P.K., A.G., E.S., A.T., V.S.), Department of Pediatrics, University Hospital of Geneva and Diabetes Center, University of Geneva, 1211 Geneva, Switzerland; Cell Isolation and Transplantation Center (D.B.), Department of Surgery, University Hospital of Geneva and University of Geneva, 1205 Geneva, Switzerland; and Department of Cell Physiology and Metabolism (P.M.), Geneva University Medical Center, 1205 Geneva, Switzerland
| | - Pierre Maechler
- Service of Development and Growth (P.K., A.G., E.S., A.T., V.S.), Department of Pediatrics, University Hospital of Geneva and Diabetes Center, University of Geneva, 1211 Geneva, Switzerland; Cell Isolation and Transplantation Center (D.B.), Department of Surgery, University Hospital of Geneva and University of Geneva, 1205 Geneva, Switzerland; and Department of Cell Physiology and Metabolism (P.M.), Geneva University Medical Center, 1205 Geneva, Switzerland
| | - Valérie M Schwitzgebel
- Service of Development and Growth (P.K., A.G., E.S., A.T., V.S.), Department of Pediatrics, University Hospital of Geneva and Diabetes Center, University of Geneva, 1211 Geneva, Switzerland; Cell Isolation and Transplantation Center (D.B.), Department of Surgery, University Hospital of Geneva and University of Geneva, 1205 Geneva, Switzerland; and Department of Cell Physiology and Metabolism (P.M.), Geneva University Medical Center, 1205 Geneva, Switzerland
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25
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Araf S, Korfi K, Rahim T, Davies A, Fitzgibbon J. Advances in the molecular diagnosis of diffuse large B-cell lymphoma in the era of precision medicine. Expert Rev Mol Diagn 2016; 16:1093-1102. [PMID: 27648481 DOI: 10.1080/14737159.2016.1235974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
INTRODUCTION The adoption of high-throughput technologies has led to a transformation in our ability to classify diffuse large B-cell lymphoma (DLBCL) into unique molecular subtypes. In parallel, the expansion of agents targeting key genetic and gene expression signatures has led to an unprecedented opportunity to personalize cancer therapies, paving the way for precision medicine. Areas covered: This review summarizes the key molecular subtypes of DLBCL and outlines the novel technology platforms in development to discriminate clinically relevant subtypes. Expert commentary: The application of emerging diagnostic tests into routine clinical practise is gaining momentum following the demonstration of subtype specific activity by novel agents. Co-ordinated efforts are required to ensure that these state of the art technologies provide reliable and clinically meaningful results accessible to the wider haematology community.
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MESH Headings
- Biomarkers, Tumor
- Gene Expression
- Genes, bcl-2
- Genes, myc
- High-Throughput Nucleotide Sequencing
- Humans
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/mortality
- Lymphoma, Large B-Cell, Diffuse/therapy
- Molecular Diagnostic Techniques
- Mutation
- Precision Medicine/methods
- Prognosis
- Transcriptome
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Affiliation(s)
- Shamzah Araf
- a Centre for Haemato-Oncology , Barts Cancer Institute, Queen Mary University of London , London , UK
| | - Koorosh Korfi
- a Centre for Haemato-Oncology , Barts Cancer Institute, Queen Mary University of London , London , UK
| | - Tahrima Rahim
- a Centre for Haemato-Oncology , Barts Cancer Institute, Queen Mary University of London , London , UK
| | - Andrew Davies
- b Cancer Sciences Unit, Faculty of Medicine , University of Southampton , Southampton , UK
| | - Jude Fitzgibbon
- a Centre for Haemato-Oncology , Barts Cancer Institute, Queen Mary University of London , London , UK
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Vulesevic B, McNeill B, Giacco F, Maeda K, Blackburn NJR, Brownlee M, Milne RW, Suuronen EJ. Methylglyoxal-Induced Endothelial Cell Loss and Inflammation Contribute to the Development of Diabetic Cardiomyopathy. Diabetes 2016; 65:1699-713. [PMID: 26956489 PMCID: PMC4878427 DOI: 10.2337/db15-0568] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 03/03/2016] [Indexed: 12/18/2022]
Abstract
The mechanisms for the development of diabetic cardiomyopathy remain largely unknown. Methylglyoxal (MG) can accumulate and promote inflammation and vascular damage in diabetes. We examined if overexpression of the MG-metabolizing enzyme glyoxalase 1 (GLO1) in macrophages and the vasculature could reduce MG-induced inflammation and prevent ventricular dysfunction in diabetes. Hyperglycemia increased circulating inflammatory markers in wild-type (WT) but not in GLO1-overexpressing mice. Endothelial cell number was reduced in WT-diabetic hearts compared with nondiabetic controls, whereas GLO1 overexpression preserved capillary density. Neuregulin production, endothelial nitric oxide synthase dimerization, and Bcl-2 expression in endothelial cells was maintained in the hearts of GLO1-diabetic mice and corresponded to less myocardial cell death compared with the WT-diabetic group. Lower receptor for advanced glycation end products and tumor necrosis factor-α (TNF-α) levels were also observed in GLO1-diabetic versus WT-diabetic mice. Over a period of 8 weeks of hyperglycemia, GLO1 overexpression delayed and limited the loss of cardiac function. In vitro, MG and TNF-α were shown to synergize in promoting endothelial cell death, which was associated with increased angiopoietin 2 expression and reduced Bcl-2 expression. These results suggest that MG in diabetes increases inflammation, leading to endothelial cell loss. This contributes to the development of diabetic cardiomyopathy and identifies MG-induced endothelial inflammation as a target for therapy.
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Affiliation(s)
- Branka Vulesevic
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Brian McNeill
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Ferdinando Giacco
- Diabetes Research Center, Departments of Internal Medicine and Pathology, Albert Einstein College of Medicine, Bronx, NY
| | - Kay Maeda
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Nick J R Blackburn
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Michael Brownlee
- Diabetes Research Center, Departments of Internal Medicine and Pathology, Albert Einstein College of Medicine, Bronx, NY
| | - Ross W Milne
- Diabetes and Atherosclerosis Laboratory, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Erik J Suuronen
- Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario, Canada Department of Cellular & Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
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Furukawa J, Miyake H, Fujisawa M. [Therapeutic target of anti-apoptotic gene for prostate cancer]. Nihon Rinsho 2016; 74 Suppl 3:111-115. [PMID: 27344713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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28
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Abstract
The 'hallmarks of cancer' are generally accepted as a set of genetic and epigenetic alterations that a normal cell must accrue to transform into a fully malignant cancer. It follows that therapies designed to counter these alterations might be effective as anti-cancer strategies. Over the past 30 years, research on the BCL-2-regulated apoptotic pathway has led to the development of small-molecule compounds, known as 'BH3-mimetics', that bind to pro-survival BCL-2 proteins to directly activate apoptosis of malignant cells. This Timeline article focuses on the discovery and study of BCL-2, the wider BCL-2 protein family and, specifically, its roles in cancer development and therapy.
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Affiliation(s)
- Alex R D Delbridge
- Walter and Eliza Hall Institute of Medical Research and the Department of Medical Biology, University of Melbourne, Victoria, Australia
| | - Stephanie Grabow
- Walter and Eliza Hall Institute of Medical Research and the Department of Medical Biology, University of Melbourne, Victoria, Australia
| | - Andreas Strasser
- Walter and Eliza Hall Institute of Medical Research and the Department of Medical Biology, University of Melbourne, Victoria, Australia
| | - David L Vaux
- Walter and Eliza Hall Institute of Medical Research and the Department of Medical Biology, University of Melbourne, Victoria, Australia
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Benito JM, Godfrey L, Kojima K, Hogdal L, Wunderlich M, Geng H, Marzo I, Harutyunyan KG, Golfman L, North P, Kerry J, Ballabio E, Chonghaile TN, Gonzalo O, Qiu Y, Jeremias I, Debose L, O'Brien E, Ma H, Zhou P, Jacamo R, Park E, Coombes KR, Zhang N, Thomas DA, O'Brien S, Kantarjian HM, Leverson JD, Kornblau SM, Andreeff M, Müschen M, Zweidler-McKay PA, Mulloy JC, Letai A, Milne TA, Konopleva M. MLL-Rearranged Acute Lymphoblastic Leukemias Activate BCL-2 through H3K79 Methylation and Are Sensitive to the BCL-2-Specific Antagonist ABT-199. Cell Rep 2015; 13:2715-27. [PMID: 26711339 PMCID: PMC4700051 DOI: 10.1016/j.celrep.2015.12.003] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 10/21/2015] [Accepted: 11/19/2015] [Indexed: 12/25/2022] Open
Abstract
Targeted therapies designed to exploit specific molecular pathways in aggressive cancers are an exciting area of current research. Mixed Lineage Leukemia (MLL) mutations such as the t(4;11) translocation cause aggressive leukemias that are refractory to conventional treatment. The t(4;11) translocation produces an MLL/AF4 fusion protein that activates key target genes through both epigenetic and transcriptional elongation mechanisms. In this study, we show that t(4;11) patient cells express high levels of BCL-2 and are highly sensitive to treatment with the BCL-2-specific BH3 mimetic ABT-199. We demonstrate that MLL/AF4 specifically upregulates the BCL-2 gene but not other BCL-2 family members via DOT1L-mediated H3K79me2/3. We use this information to show that a t(4;11) cell line is sensitive to a combination of ABT-199 and DOT1L inhibitors. In addition, ABT-199 synergizes with standard induction-type therapy in a xenotransplant model, advocating for the introduction of ABT-199 into therapeutic regimens for MLL-rearranged leukemias.
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Affiliation(s)
- Juliana M Benito
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Laura Godfrey
- Weatherall Institute of Molecular Medicine, Molecular Haematology Unit, NIHR Oxford Biomedical Research Centre Programme, University of Oxford, Headington, Oxford OX3 9DS, UK
| | - Kensuke Kojima
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga 840-8502, Japan
| | - Leah Hogdal
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Mark Wunderlich
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Huimin Geng
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Isabel Marzo
- Department of Biochemistry, Molecular and Cell Biology, University of Zaragoza, 50018 Zaragoza, Spain
| | - Karine G Harutyunyan
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Leonard Golfman
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Phillip North
- Weatherall Institute of Molecular Medicine, Molecular Haematology Unit, NIHR Oxford Biomedical Research Centre Programme, University of Oxford, Headington, Oxford OX3 9DS, UK
| | - Jon Kerry
- Weatherall Institute of Molecular Medicine, Molecular Haematology Unit, NIHR Oxford Biomedical Research Centre Programme, University of Oxford, Headington, Oxford OX3 9DS, UK
| | - Erica Ballabio
- Weatherall Institute of Molecular Medicine, Molecular Haematology Unit, NIHR Oxford Biomedical Research Centre Programme, University of Oxford, Headington, Oxford OX3 9DS, UK
| | - Triona Ní Chonghaile
- Department of Physiology and Medical Physics, Royal College of Surgeons in Ireland, York House, Dublin 2, Ireland
| | - Oscar Gonzalo
- Department of Biochemistry, Molecular and Cell Biology, University of Zaragoza, 50018 Zaragoza, Spain
| | - Yihua Qiu
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Irmela Jeremias
- German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - LaKiesha Debose
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Eric O'Brien
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Helen Ma
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ping Zhou
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Rodrigo Jacamo
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Eugene Park
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Kevin R Coombes
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Nianxiang Zhang
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Deborah A Thomas
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Susan O'Brien
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Hagop M Kantarjian
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Joel D Leverson
- Department of Oncology Development, AbbVie Inc., North Chicago, IL 60064, USA
| | - Steven M Kornblau
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Michael Andreeff
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Markus Müschen
- Department of Laboratory Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Patrick A Zweidler-McKay
- Division of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - James C Mulloy
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Anthony Letai
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Thomas A Milne
- Weatherall Institute of Molecular Medicine, Molecular Haematology Unit, NIHR Oxford Biomedical Research Centre Programme, University of Oxford, Headington, Oxford OX3 9DS, UK.
| | - Marina Konopleva
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Senel G, Büyükköroğlu G, Yazan Y. Solid lipid and chitosan particulate systems for delivery of siRNA. Pharmazie 2015; 70:698-705. [PMID: 26790185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Due to the recent advances in molecular biology, there are promising gene therapy studies for prevention and treatment of cancer, genetic and infectious diseases. Many technologies in molecular biology and biotechnology were developed, and among those technologies, 'antisense technology' has become prominent in recent years. In this study, non-viral gene delivery systems such as solid lipid and chitosan nanoparticles were developed for improving intercellular delivery of siRNA. Commercially available Bcl-2 siRNA which is specific for Bcl-2 mRNA was used as a genetic material. Particle size, zeta potential, siRNA binding abilities and cytotoxic properties of the systems were evaluated and transfection assay was performed on among the prepared formulations. When the results of those studies were compared with Lipofectamine 2000, prepared formulations were found to show usable results. A novel method was developed in this study for producing solid lipid nanoparticles (SLNs) with highly efficient siRNA encapsulation. The results of this study showed that the genetic materials can be encapsulated in SLNs and SLNs have the potential to be used as a transfection agents.
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Frączek M, Kuśmierz D, Rostkowska-Nadolska B, Kutner A, Latocha MT. ANTIPROLIFERATIVE AND CYTOTOXIC EFFECT OF SELECTED VITAMIN D ANALOGS ON NASAL POLYPS FIBROBLASTS AND OTHER CELLS WITH HIGHER PROLIFERATIVE POTENTIAL. Acta Pol Pharm 2015; 72:923-929. [PMID: 26665399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Besides well-known effect on bone and mineral metabolism vitamin D is involved in essential non-calcemic regulatory mechanisms, such as cellular proliferation, differentiation and apoptosis in various cell types. Major limitation for therapeutic use of calcitriol, a hormonally active form of vitamin D, is its calcemic and phosphatemic action. Recently, more selective vitamin D analogs which retain clinically useful activities with reduced toxicity have been designed. The aim of the present study was to evaluate the in vitro effect of vitamin D analogs on proliferation rate and survivability of cells with increased proliferative activity. The effect of calcitriol, PRI-2191, PRI-1890, PRI-1906 and PRI-2205 was examined. The experiments were performed on cultures derived from nasal polyps and cancer cells lines (SNB-19, C32 and SH-4). Cultures were incubated 72 h with tested compounds, each at the concentration of 0.025, 0.25, 2.5 and 25 µg/mL. The cytotoxic effect of vitamin D analogs and their influence on growth rate were determined using WST-1 assay. RT-QPCR technique was used to evaluate the expression of anti-apoptotic BCL-2 and pro-apoptotic BAX gene. Each of the tested compounds presented significant effect at the concentrations above 0.25 µg/mL. The strongest inhibition of the growth rate and decrease in cell survivability was observed after treatment with PRI-1890 and PRI-2191. Stimulation with calcitriol and other vitamin D analogs led to decrease BCL-2/BAX mRNA ratio in each cell lines. The apparent pro-apoptotic action revealed PRI-2191 followed by PRI-1890. It might be hypothesized that vitamin D analogs supplementation may provide therapeutic benefits not only in oncological patients but also in chronic rhinosinusitis.
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Nguyen JC, Kubik MJ, Broome HE, Curtin PT, Dell'Aquila ML, Wang HY. Successful treatment of both double minute of C-MYC and BCL-2 rearrangement containing large B-cell lymphoma with subsequent unfortunate development of therapy-related acute myeloid leukemia with t(3;3)(q26.2;q21). Pathol Res Pract 2015; 211:883-91. [PMID: 26300063 DOI: 10.1016/j.prp.2015.07.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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] [Received: 05/25/2015] [Revised: 06/25/2015] [Accepted: 07/13/2015] [Indexed: 11/16/2022]
Abstract
Double minute chromosomes (DMs), although relatively frequently encountered in solid tumors, are rare in hematologic neoplasms such as acute myeloid leukemia (AML), and even rarer in lymphoid neoplasms. t(3;3)(q26.2;q21) is a very rare genetic alteration observed in myeloid neoplasm. Herein we report an interesting and unique case of concomitant C-MYC DMs and t(14;18)-containing large B-cell lymphoma, which was successfully treated with R-hyper-CVAD; unfortunately, the patient has developed a therapy-related AML (t-AML) 2 years since the start of his lymphoma treatment. His t-AML contains both t(3;3)(q26.2;q21) and monosomy 7, and the patient died of AML 10 months after the initial diagnosis of t-AML despite clinical remission. To the best of our knowledge, this is the first reported case of C-MYC DM-containing de novo large B-cell lymphoma, which was successfully treated with complete remission, but unfortunately died of t-AML harboring t(3;3)(q21;q26).
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MESH Headings
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Chromosomes, Human, Pair 3
- Fatal Outcome
- Flow Cytometry
- Genes, bcl-2
- Genes, myc
- Humans
- Immunohistochemistry
- In Situ Hybridization, Fluorescence
- Karyotyping
- Leukemia, Myeloid, Acute/chemically induced
- Leukemia, Myeloid, Acute/genetics
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/genetics
- Male
- Middle Aged
- Mutation
- Neoplasms, Second Primary/chemically induced
- Neoplasms, Second Primary/genetics
- Translocation, Genetic
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Affiliation(s)
- John C Nguyen
- Department of Pathology, University of California San Diego Health System, La Jolla, CA 92093-0960, United States
| | - Melanie J Kubik
- Department of Pathology, University of California San Diego Health System, La Jolla, CA 92093-0960, United States
| | - H Elizabeth Broome
- Department of Pathology, University of California San Diego Health System, La Jolla, CA 92093-0960, United States
| | - Peter T Curtin
- Division of Hematology, Department of Medicine, University of California San Diego Health System, La Jolla, CA 92093-0960, United States
| | - Marie L Dell'Aquila
- Department of Pathology, University of California San Diego Health System, La Jolla, CA 92093-0960, United States
| | - Huan-You Wang
- Department of Pathology, University of California San Diego Health System, La Jolla, CA 92093-0960, United States.
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Ramanjaneya M, Tan BK, Rucinski M, Kawan M, Hu J, Kaur J, Patel VH, Malendowicz LK, Komarowska H, Lehnert H, Randeva HS. Nesfatin-1 inhibits proliferation and enhances apoptosis of human adrenocortical H295R cells. J Endocrinol 2015; 226:1-11. [PMID: 25869615 DOI: 10.1530/joe-14-0496] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [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] [Accepted: 03/30/2015] [Indexed: 11/08/2022]
Abstract
NUCB2/nesfatin and its proteolytically cleaved product nesfatin-1 are recently discovered anorexigenic hypothalamic neuroproteins involved in energy homeostasis. It is expressed both centrally and in peripheral tissues, and appears to have potent metabolic actions. NUCB2/nesfatin neurons are activated in response to stress. Central nesfatin-1 administration elevates circulating ACTH and corticosterone levels. Bilateral adrenalectomy increased NUCB2/nesfatin mRNA levels in rat paraventricular nuclei. To date, studies have not assessed the effects of nesfatin-1 stimulation on human adrenocortical cells. Therefore, we investigated the expression and effects of nesfatin-1 in a human adrenocortical cell model (H295R). Our findings demonstrate that NUCB2 and nesfatin-1 are expressed in human adrenal gland and human adrenocortical cells (H295R). Stimulation with nesfatin-1 inhibits the growth of H295R cells and promotes apoptosis, potentially via the involvement of Bax, BCL-XL and BCL-2 genes as well as ERK1/2, p38 and JNK1/2 signalling cascades. This has implications for understanding the role of NUCB2/nesfatin in adrenal zonal development. NUCB2/nesfatin may also be a therapeutic target for adrenal cancer. However, further studies using in vivo models are needed to clarify these concepts.
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Affiliation(s)
- Manjunath Ramanjaneya
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Bee K Tan
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Marcin Rucinski
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Mohamed Kawan
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Jiamiao Hu
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Jaspreet Kaur
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Vanlata H Patel
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Ludwik K Malendowicz
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Hanna Komarowska
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Hendrik Lehnert
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK
| | - Harpal S Randeva
- Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal Medicine, University of Medical Sciences, 16 Karol Marcinkowski, Poznan, Poland1st Medical DepartmentUniversity of Lübeck Medical School, Lübeck, GermanyDepartment of DiabetesEndocrinology and Metabolism, University Hospital, Coventry CV2 2DX, UKAston Medical Research InstituteSchool of Life and Health Sciences, Aston University, Birmingham, UK Warwick Medical SchoolUniversity of Warwick, Coventry CV4 7AL, UKInterim Translational Research InstituteAcademic Health System, Hamad Medical Corporation, Doha, QatarDepartment of Obstetrics and GynaecologyBirmingham Heartlands Hospital, Heart of England NHS Foundation Trust, Birmingham, UKDepartment of Histology and EmbryologyPoznan University of Medical Sciences, Poznan, PolandDepartment of EndocrinologyMetabolism and Internal
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Kaija H, Pakanen L, Kortelainen ML, Porvari K. Hypothermia and rewarming induce gene expression and multiplication of cells in healthy rat prostate tissue. PLoS One 2015; 10:e0127854. [PMID: 25996932 PMCID: PMC4440734 DOI: 10.1371/journal.pone.0127854] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 04/20/2015] [Indexed: 11/18/2022] Open
Abstract
Prostate cancer has been extensively studied, but cellular stress responses in healthy prostate tissue are rarely investigated. Hypothermia is known to cause alterations in mRNA and protein expressions and stability. The aim of this study was to use normal rat prostate as a model in order to find out consequences of cold exposure and rewarming on the expressions of genes which are either members or functionally/structurally related to erythroblastic leukemia viral oncogene B (ErbB) signaling pathway. Relative mRNA expressions of amphiregulin (AMR), cyclin D1 (CyD1), cyclin-dependent kinase inhibitor 1A (p21), transmembrane form of the prostatic acid phosphatase (PAcP), thrombomodulin (TM) and heat shock transcription factor 1 (HSF1) in rat ventral prostate were quantified in mild (2 or 4.5 h at room temperature) and severe (2 or 4.5 h at +10°C) hypothermia and in rewarming after cold exposure (2 h at +10°C followed by 2 h at room temperature or 3 h at +28°C). AMR protein level, apoptotic Bcl-2 associated X protein to B-cell CLL/lymphoma 2 (Bax/Bcl-2) mRNA ratio and proliferative index Ki-67 were determined. 4.5-h mild hypothermia, 2-h severe hypothermia and rewarming increased expression of all these genes. Elevated proliferation index Ki-67 could be seen in 2-h severe hypothermia, and the proliferation index had its highest value in longer rewarming with totally recovered normal body temperature. Pro-apoptotic tendency could be seen in 2-h mild hypothermia while anti-apoptosis was predominant in 4.5-h mild hypothermia and in shorter rewarming with only partly recovered body temperature. Hypothermia and following rewarming promote the proliferation of cells in healthy rat prostate tissue possibly via ErbB signaling pathway.
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Affiliation(s)
- Helena Kaija
- Department of Forensic Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Lasse Pakanen
- Department of Forensic Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | | | - Katja Porvari
- Department of Forensic Medicine, Faculty of Medicine, University of Oulu, Oulu, Finland
- Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
- * E-mail:
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Zhao J, Wang HR, Bu JH, Zuo M, Zhang GZ. [Apoptosis in Lungs and Liver after Crush Injury of Hindlimbs in Rat]. Fa Yi Xue Za Zhi 2015; 31:88-92. [PMID: 26245082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To investigate the process of apoptosis in lungs and liver induced by crushing hindlimbs of rat, and study the mechanism of crush injury. METHODS The rat experimental model of hindlimbs crush injury was established. The cell apoptosis in lungs and liver was detected by TUNEL assay, and the expression of Bax, Bcl-2 and caspase-3 apoptin was examined by immunohistochemistry. RESULTS Compared with the control group, the partial muscle injury of rat's hindlimbs was more serious with more apoptosis observed in lungs and liver (P < 0.05). The expression of Bax was up-regulated and Bcl-2 was down-regulated, whereas caspase-3 expression was activated (P < 0.05). CONCLUSION The cell apoptosis has increased significantly in lungs and liver after crush injury of hindlimbs in rat. The correlation factor released during tissue injury may mediate apoptosis process.
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Xiao Y, Hafeez A, Zhang Y, Liu S, Kong Q, Duan Y, Luo Y, Ding Y, Shi H, Ji X. Neuroprotection by peripheral nerve electrical stimulation and remote postconditioning against acute experimental ischaemic stroke. Neurol Res 2015; 37:447-53. [PMID: 25819636 DOI: 10.1179/1743132815y.0000000032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVE Local electrical stimulation (ES) was reported to protect the brain during ischaemic injury, while the protective effect of limb remote ischaemic postconditioning (RIPostC) was confirmed. The aim of this study was to explore whether remote peripheral nerve ES exerted neuroprotection and whether this procedure shared the same neuroprotective mechanism underlying RIPostC. METHODS Stroke in Sprague-Dawley rats was induced by distal middle cerebral artery occlusion (dMCAO). Rats were divided into five groups: dMCAO, RIPostC, ES, nerve resection (NR) + ES and RIPostC+ES. Twenty-four hours after reperfusion, rats were examined for neurobehavioural function, including forelimb fault placing test, Ludmila Belayev 12 score test, and infarct volume. The expression of Bcl-2 and cleaved-caspase-3 in ischaemic cortex was assessed by Western blot. RESULTS In forelimb fault placing test, as compared to the highest score in the stroke-only group, RIPostC, ES and RIPostC+ES groups showed a significantly (P < 0.01) lower score. The results were similar for the Ludmila Belayev 12 score test. The infarct volume of the treatment groups also exhibited significant (P < 0.01) reduction as compared to the stroke-only group. The volume of infarct tissue in the combination of RIPostC+ES was significantly less than RIPostC and ES alone (P < 0.05). Furthermore, NR blocked the ES's protection (P < 0.05) as compared to the ES group by using above-mentioned methods. Bcl-2 was upregulated, while cleaved-caspase-3 was downregulated in the experimental groups as compared to the control group. No difference was found among the experimental groups. DISCUSSION Peripheral nerve ES appears to have a neuroprotective effect in a rat dMCAO model. This effect may indicate a neural protective mechanism underlying beneficial effect of RIPostC.
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Jimenez-Vera E, Davies S, Phillips P, O'Connell PJ, Hawthorne WJ. Long-term cultured neonatal islet cell clusters demonstrate better outcomes for reversal of diabetes: in vivo and molecular profiles. Xenotransplantation 2015; 22:114-23. [PMID: 25676501 DOI: 10.1111/xen.12151] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 12/05/2014] [Indexed: 11/27/2022]
Abstract
BACKGROUND Porcine neonatal islet-like cell clusters (NICC) are being considered as a source of β-cell replacement. However, the lag time to full function due to hormonal immaturity remains a problem. This study aimed to determine whether time in culture was important for NICC function in vivo. METHODS Neonatal islet-like cell clusters were isolated from piglets aged between 1 and 3 days, and cultured for up to 27 days post-isolation. Each week, NICC number, viability, and function were determined. RESULTS Neonatal islet-like cell clusters cultured for 12, 19, and 27 days achieved normal blood glucose levels at 46 days (85% of animals), 32 days (100% of animals), and 35 days (81% of animals), respectively. By comparison, standard 6-day culture took a mean of 63 days to achieve normoglycemia in 35% of animals. Longer time in culture resulted in a significant loss of islet equivalent over time. However, insulin gene expression levels were significantly higher at days 12, 19, 27 compared to day 6. Glucagon gene expression was highest at day 12, and significantly higher than day 6 at all time points. Bcl-2 gene expression increased over time, and tissue factor (TF) gene expression was highest on day 6 and then decreased over the remaining time points. CONCLUSION Culture of NICC for 12 days provides the best balance in vivo functional outcome for transplantation, shown by better reversal of diabetes, and higher levels of gene expression for insulin, glucagon and Bcl-2 and lower levels of TF expression with acceptable NICC number loss in terms of time and expense.
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Affiliation(s)
- Elvira Jimenez-Vera
- The Centre for Transplant & Renal Research, Westmead Millennium Research Institute, University of Sydney, Westmead, NSW, Australia
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Prunoiu VM, Marincaş MA, Cirimbei C, Ionescu S, Zurac S, Radu M, Nicolaescu R, Brătucu E, Straja ND. The configuration of biomolecular markers in cancer of the uterine cervix. Personalized therapy. Monitoring and prognosis. Chirurgia (Bucur) 2015; 110:144-150. [PMID: 26011836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2015] [Indexed: 06/04/2023]
Abstract
INTRODUCTION The paper deals with the diagnosis of some aggressive forms of uterine cervix cancers, resistant to radio chemotherapy, using biomolecular markers.For this study, the destruction of tumours in stages II-IIIBis carried out by hyperthermia induced by different sources of energy. The aimed targets are toembed a quick and simple technique of haemostas isused in bleeding uterine cervix tumours associated with acute an aemiain the treatment protocols and to identify biomolecular criteria revealing tumour aggressiveness and treatment response. METHOD The proposed method consists in radio frequency ablation (RFA) applied touterine cervix bleeding tumours with acute secondary anaemia. Studying 16 patients displaying aggressive cancer forms resistant to radio chemotherapy treated by the above mentioned method, we assessed that the commonly present markers: Ki67, p53 and Bcl-2, may be a substantial indication of such cases. Aggressiveness and treatment resistance was defined based on clinical and paraclinical investigations. RESULTS RFA haemostasis achieved in approximately 20 m inproved the efficiency of this method. A secondary important effect was local tumour volume decrease, resulting in the improvement of radio-chemotherapy responsiveness. CONCLUSIONS Once an aggressive and radio-chemotherapy resistant cancer is diagnosed,the quantitative, qualitative and associative presence of the biomolecular markers mentioned herein before, could influence the personalised treatment attitude (radiofrequency, neoadjuvant chemotherapy), which onthe long term, may increase patient survival and life quality improvement.
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Dunleavy K, Roschewski M, Wilson WH. Precision treatment of distinct molecular subtypes of diffuse large B-cell lymphoma: ascribing treatment based on the molecular phenotype. Clin Cancer Res 2014; 20:5182-93. [PMID: 25320368 PMCID: PMC7521674 DOI: 10.1158/1078-0432.ccr-14-0497] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Although diffuse large B-cell lymphoma (DLBCL), the most common type of non-Hodgkin lymphoma, was once considered to be a single disease, novel insights into its biology have revealed that it is molecularly heterogeneous. Technologies such as gene expression profiling have revealed that DLBCL consists of at least three distinct molecular diseases that have disparate outcomes following standard therapy. These subtypes arise from different stages of B-cell differentiation and are characterized by distinct oncogenic activation mechanisms. This knowledge has led to the investigation of strategies and novel agents that have selective activity within molecular subtypes and sets the stage for an era of precision medicine in DLBCL therapeutics, where therapy can be ascribed based on molecular phenotype. This work offers the chance of improving the curability of DLBCL, particularly in the activated B-cell subtype, where standard approaches are inadequate for a high proportion of patients. See all articles in this CCR Focus section, "Paradigm Shifts in Lymphoma."
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Affiliation(s)
- Kieron Dunleavy
- Lymphoid Malignancy Branch, National Cancer Institute, Bethesda, Maryland
| | - Mark Roschewski
- Lymphoid Malignancy Branch, National Cancer Institute, Bethesda, Maryland
| | - Wyndham H Wilson
- Lymphoid Malignancy Branch, National Cancer Institute, Bethesda, Maryland.
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Zhang L, Zhao H, Li X, Xia B, Zheng H, Li H, Sun B, Zhang Y. [Expression of Bcl-2 gene and its effect on prognosis of patients with primary gastrointestinal diffuse large B-cell lymphoma]. Zhonghua Zhong Liu Za Zhi 2014; 36:755-760. [PMID: 25567306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To explore the expression of Bcl-2 mRNA and its effect on prognosis of patients with primary gastrointestinal diffuse large B-cell lymphoma (PGI-DLBCL). METHODS Real time quantitative PCR was used to determine the expression of Bcl-2 mRNA in 40 PGI-DLBCL patients and 17 healthy controls. The association of Bcl-2 expression with clinicopathological features and prognosis of the patients was analyzed. RESULTS The expression level of Bcl-2 mRNA in PGI-DLBCL patients was 1.03 ± 0.93, significantly higher than that of the controls (0.41 ± 0.21) (P < 0.05). The expression of Bcl-2 mRNA in stage IIE-IV patients (1.28 ± 1.01) was significantly higher than that in the stage I-II2 patients (0.62 ± 0.61) (P < 0.05). The expression of Bcl-2 mRNA in patients with international prognostic index (IPI) score >2 (1.95 ± 1.27) was significantly higher than those with IPI score ≤ 2 (0.86 ± 0.75)(P < 0.05). The expression of Bcl-2 mRNA in patients with complete remission (CR) (0.71 ± 0.58) was significantly lower vs. 2.42 ± 0.91 in patients with no CR (P < 0.05). Univariate analysis indicated that β2-MG, IPI score>2, the Lugano staging, and Bcl-2 mRNA expression were associated with overall survival (OS) and progression-free survival (PFS) (P < 0.05). Multivariate analysis indicated that IPI score>2 was independently associated with OS (P < 0.05), and both IPI score >2 and Bcl-2 mRNA expression were independently associated with PFS (P < 0.05). CONCLUSIONS The expression of Bcl-2 mRNA in the tumor tissue of PGI-DLBCL patients is significantly higher than that in controls. PGI-DLBCL patients with higher expression of Bcl-2 have a poor chemotherapy response and inferior prognosis. IPI score >2 and higher expression of Bcl-2 mRNA are independent poor prognostic factors for PFS in PGI-DLBCL patients.
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MESH Headings
- Disease-Free Survival
- Genes, bcl-2
- Humans
- Lymphoma, B-Cell/diagnosis
- Lymphoma, B-Cell/genetics
- Lymphoma, B-Cell/metabolism
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/genetics
- Lymphoma, Large B-Cell, Diffuse/metabolism
- Prognosis
- Proto-Oncogene Proteins c-bcl-2/genetics
- Proto-Oncogene Proteins c-bcl-2/metabolism
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Affiliation(s)
- Le Zhang
- Department of Hematological Oncology, Tianjin Cancer Institute and Hospital, Tianjin 300060, China
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Hao R, Hu X, Wu C, Li N. Hypoxia-induced miR-15a promotes mesenchymal ablation and adaptation to hypoxia during lung development in chicken. PLoS One 2014; 9:e98868. [PMID: 24887070 PMCID: PMC4041788 DOI: 10.1371/journal.pone.0098868] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Accepted: 05/08/2014] [Indexed: 01/12/2023] Open
Abstract
The lungs undergo changes that are adaptive for high elevation in certain animal species. In chickens, animals bred at high elevations (e.g., Tibet chickens) are better able to hatch and survive under high-altitude conditions. In addition, lowland chicken breeds undergo physiological effects and suffer greater mortality when they are exposed to hypoxic conditions during embryonic development. Although these physiological effects have been noted, the mechanisms that are responsible for hypoxia-induced changes in lung development and function are not known. Here we have examined the role of a particular microRNA (miRNA) in the regulation of lung development under hypoxic conditions. When chicks were incubated in low oxygen (hypoxia), miR-15a was significantly increased in embryonic lung tissue. The expression level of miR-15a in hypoxic Tibet chicken embryos increased and remained relatively high at embryonic day (E)16–20, whereas in normal chickens, expression increased and peaked at E19–20, at which time the cross-current gas exchange system (CCGS) is developing. Bcl-2 was a translationally repressed target of miR-15a in these chickens. miR-16, a cluster and family member of miR-15a, was detected but did not participate in the posttranscriptional regulation of bcl-2. Around E19, the hypoxia-induced decrease in Bcl-2 protein resulted in apoptosis in the mesenchyme around the migrating tubes, which led to an expansion and migration of the tubes that would become the air capillary network and the CCGS. Thus, interfering with miR-15a expression in lung tissue may be a novel therapeutic strategy for hypoxia insults and altitude adaptation.
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Affiliation(s)
- Rui Hao
- State Key Laboratory for Agrobiotechnology, China Agricultural University, Beijing, P. R. China
| | - Xiaoxiang Hu
- State Key Laboratory for Agrobiotechnology, China Agricultural University, Beijing, P. R. China
| | - Changxin Wu
- College of Animal Science and Technology, China Agricultural University, Beijing, P. R. China
| | - Ning Li
- State Key Laboratory for Agrobiotechnology, China Agricultural University, Beijing, P. R. China
- College of Animal Science, Yunnan Agricultural University, Kunming, P. R. China
- * E-mail:
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Cui Y, Koirala D, Kang H, Dhakal S, Yangyuoru P, Hurley LH, Mao H. Molecular population dynamics of DNA structures in a bcl-2 promoter sequence is regulated by small molecules and the transcription factor hnRNP LL. Nucleic Acids Res 2014; 42:5755-64. [PMID: 24609386 PMCID: PMC4027204 DOI: 10.1093/nar/gku185] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Revised: 02/03/2014] [Accepted: 02/18/2014] [Indexed: 12/20/2022] Open
Abstract
Minute difference in free energy change of unfolding among structures in an oligonucleotide sequence can lead to a complex population equilibrium, which is rather challenging for ensemble techniques to decipher. Herein, we introduce a new method, molecular population dynamics (MPD), to describe the intricate equilibrium among non-B deoxyribonucleic acid (DNA) structures. Using mechanical unfolding in laser tweezers, we identified six DNA species in a cytosine (C)-rich bcl-2 promoter sequence. Population patterns of these species with and without a small molecule (IMC-76 or IMC-48) or the transcription factor hnRNP LL are compared to reveal the MPD of different species. With a pattern recognition algorithm, we found that IMC-48 and hnRNP LL share 80% similarity in stabilizing i-motifs with 60 s incubation. In contrast, IMC-76 demonstrates an opposite behavior, preferring flexible DNA hairpins. With 120-180 s incubation, IMC-48 and hnRNP LL destabilize i-motifs, which has been previously proposed to activate bcl-2 transcriptions. These results provide strong support, from the population equilibrium perspective, that small molecules and hnRNP LL can modulate bcl-2 transcription through interaction with i-motifs. The excellent agreement with biochemical results firmly validates the MPD analyses, which, we expect, can be widely applicable to investigate complex equilibrium of biomacromolecules.
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Affiliation(s)
- Yunxi Cui
- Department of Chemistry and Biochemistry and School of Biomedical Sciences, Kent State University, Kent, OH 44242, USA
| | - Deepak Koirala
- Department of Chemistry and Biochemistry and School of Biomedical Sciences, Kent State University, Kent, OH 44242, USA
| | - HyunJin Kang
- College of Pharmacy, University of Arizona, 1703 East Mabel Street, Tucson, AZ 85721, USA
| | - Soma Dhakal
- Department of Chemistry and Biochemistry and School of Biomedical Sciences, Kent State University, Kent, OH 44242, USA
| | - Philip Yangyuoru
- Department of Chemistry and Biochemistry and School of Biomedical Sciences, Kent State University, Kent, OH 44242, USA
| | - Laurence H Hurley
- College of Pharmacy, University of Arizona, 1703 East Mabel Street, Tucson, AZ 85721, USA Arizona Cancer Center, 1515 North Campbell Avenue, Tucson, AZ 85724, USA BIO5 Institute, 1657 East Helen Street, Tucson, AZ 85721, USA
| | - Hanbin Mao
- Department of Chemistry and Biochemistry and School of Biomedical Sciences, Kent State University, Kent, OH 44242, USA
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Gebauer N, Gollub W, Stassek B, Bernard V, Rades D, Feller AC, Thorns C. MicroRNA signatures in subtypes of follicular lymphoma. Anticancer Res 2014; 34:2105-2111. [PMID: 24778012] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND MicroRNAs are regulators of gene expression implicated in vital cellular processes including differentiation, cell growth and apoptosis. Distinct microRNA signatures have been identified for many malignancies including follicular lymphoma (FL). However, no microRNA expression profile characteristic of FL subtypes, e.g. FL with B-cell lymphoma-6 (BCL6) locus rearrangement (FL(BCL2+/BCL6+), FL(BCL2-/BCL6+)) or FL with diffuse growth pattern have been reported. MATERIALS AND METHODS MicroRNA signatures from 44 cases of FL were generated employing a quantitative real-time polymerase chain reaction approach. 15 cases of diffuse FL and 15 cases of FL(BCL2+/BCL6+)/FL(BCL2-/BCL6+) were compared against 14 cases of typical FL(BCL2+/BCL6-). RESULTS Numerous microRNAs were found to be differentially expressed between FL(BCL2+/BCL6+) and FL(BCL2-/BCL6+), as well as diffuse FL, when compared to typical cases of FL. Up-regulation of several oncogenic microRNAs as well as down-regulation of tumor-suppressor microRNAs was identified. Cluster analysis, however, revealed no microRNA signatures distinct from the reference group for either subtype. CONCLUSION These results indicate an involvement of microRNAs in the pathogenesis of FL and its subtypes. Marked de-regulation of oncogenic RNAs and tumor suppressors appears to correspond with a more aggressive phenotype frequently observed in FL(BCL2+/BCL6+), FL(BCL2-/BCL6+) and diffuse FL.
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Affiliation(s)
- Niklas Gebauer
- Institut für Pathologie, Referenzzentrum für Lymphknotendiagnostik und Hämatopathologie, Universität zu Lübeck, 23538 Lübeck, Deutschland.
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Gurlek U, Demiroz Abakay C, Ozkan L, Saraydaroglu O, Kurt M, Kahraman Çetintas S. The evaluation of bcl-2 expression as a prognostic marker in early stage laryngeal cancer. Tumori 2014. [PMID: 24503791 DOI: 10.1700/1390.15456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIMS AND BACKGROUND To evaluate the effect of bcl-2 expression on the local control and overall survival of patients with early stage laryngeal cancer treated with radiotherapy alone. METHODS AND STUDY DESIGN We included 53 patients with stage Tis, T1, and T2 laryngeal cancer who were irradiated in our department. Paraffin blocks of all biopsy specimens were subjected to immunohistochemical analysis with a bcl-2 oncoprotein mouse clone 124 Scytek kit. RESULTS The mean follow-up time was 61 months (range, 7-166). Local-regional recurrence was observed in 10 (19%) patients. Forty-three patients (81%) had negative bcl-2 staining, 5 patients (9%) had + staining, 3 patients (6%) ++ staining, and 2 patients (4%) +++ staining. No relationship was detected between bcl-2 expression and local control or overall survival. The emergence of a recurrence and a younger age (<50 years) were significantly related to poor overall survival (P = 0.000 and P = 0.021, respectively). Patients with hemoglobin levels in the middle of radiotherapy and at the end of radiotherapy higher than 13 g/dl had improved overall survival in multivariate analyses (P = 0.002 and P = 0.001, respectively). Regarding local control, the following were poor prognostic factors: smoking more than 20 cigarettes a day (P = 0.001) and being younger than 50 years of age (P = 0.001). CONCLUSIONS No correlation was observed between bcl-2 expression and local control or overall survival. Whereas hemoglobin level, age and existence of a recurrence had a prognostic impact on overall survival, patient age and smoking status influenced local control rates.
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Cohen JB, Geyer SM, Lozanski G, Zhao W, Heerema NA, Hall NC, Nagar VA, Hemminger JA, Jones JA, Porcu P, Christian BA, Baiocchi RA, Maddocks KJ, Flynn JM, Devine SM, Blum KA. Complete response to induction therapy in patients with Myc-positive and double-hit non-Hodgkin lymphoma is associated with prolonged progression-free survival. Cancer 2014; 120:1677-85. [PMID: 24578014 DOI: 10.1002/cncr.28642] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 10/04/2013] [Accepted: 10/24/2013] [Indexed: 11/07/2022]
Abstract
BACKGROUND Myc-positive B-cell non-Hodgkin lymphoma (NHL) with or without a B-cell chronic lymphocytic leukemia/lymphoma 2 (BCL2) rearrangement is associated with inferior progression-free survival (PFS) and overall survival (OS). In this study, the authors reviewed the outcomes of patients with myc-positive and double-hit NHL at The Ohio State University. METHODS All patients who had non-Burkitt, aggressive B-cell NHL from 2008 to 2011 were assessed for the t(14;18) translocation and for v-myc avian myelocytomatosis viral oncogene homolog (CMYC) rearrangements at diagnosis, and all myc-positive patients were included in the current analysis. Associations with clinical characteristics were described, and univariable and multivariable models were used to assess correlations between clinical variables and outcomes. RESULTS Of 49 myc-positive patients, 29 patients also had BCL2 rearrangements (double-hit NHL). No patients underwent autologous stem cell transplantation in first remission. For all myc-positive patients, the median PFS was 16.6 months, and the median OS was 37.7 months. For patients who had double-hit NHL, the median PFS was 8 months, and the median OS was 12.5 months; whereas the median PFS and OS were not reached for myc-positive patients. A complete response (CR) after front-line therapy, the presence of t(14;18), International Prognostic Index (IPI) group, and age were associated with PFS; whereas only the achievement of a CR and age >60 years were associated with OS in the multivariable setting. The median PFS was 3.3 months, and the median and OS was 7.0 months for patients who did not attain a CR; and the medians were not reached for patients who achieved a CR (P < .00001). CONCLUSIONS The achievement of a CR with front-line therapy is associated with a prolonged PFS and OS in patients with myc-positive NHL, even after adjusting for type of initial therapy, histology, age, IPI, or the presence of a concurrent BCL2 translocation.
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Affiliation(s)
- Jonathon B Cohen
- Division of Hematology, The Ohio State University-James Comprehensive Cancer Center, Columbus, Ohio
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Landis RC. Issue highlights--July 2013. Cytometry B Clin Cytom 2014; 84:205-6. [PMID: 23788472 DOI: 10.1002/cyto.b.21100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Agrawal P, Lin C, Mathad R, Carver M, Yang D. The major G-quadruplex formed in the human BCL-2 proximal promoter adopts a parallel structure with a 13-nt loop in K+ solution. J Am Chem Soc 2014; 136:1750-3. [PMID: 24450880 PMCID: PMC4732354 DOI: 10.1021/ja4118945] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Indexed: 11/29/2022]
Abstract
The human BCL-2 gene contains a 39-bp GC-rich region upstream of the P1 promoter that has been shown to be critically involved in the regulation of BCL-2 gene expression. Inhibition of BCL-2 expression can decrease cellular proliferation and enhance the efficacy of chemotherapy. Here we report the major G-quadruplex formed in the Pu39 G-rich strand in this BCL-2 promoter region. The 1245G4 quadruplex adopts a parallel structure with one 13-nt and two 1-nt chain-reversal loops. The 1245G4 quadruplex involves four nonsuccessive G-runs, I, II, IV, V, unlike the previously reported bcl2 MidG4 quadruplex formed on the central four G-runs. The parallel 1245G4 quadruplex with the 13-nt loop, unexpectedly, appears to be more stable than the mixed parallel/antiparallel MidG4. Parallel-stranded structures with two 1-nt loops and one variable-length middle loop are found to be prevalent in the promoter G-quadruplexes; the variable middle loop is suggested to determine the specific overall structure and potential ligand recognition site. A limit of 7 nt in loop length is used in all quadruplex-predicting software. Thus, the formation and high stability of the 1245G4 quadruplex with a 13-nt loop is significant. The presence of two distinct interchangeable G-quadruplexes in the overlapping region of the BCL-2 promoter is intriguing, suggesting a novel mechanism for gene transcriptional regulation and ligand modulation.
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Affiliation(s)
- Prashansa Agrawal
- Department of Pharmacology and Toxicology, College
of Pharmacy, Department of Chemistry, BIO5 Institute, The Arizona Cancer
Center, University of Arizona, 1703 East Mabel Street, Tucson, Arizona 85721, United States
| | - Clement Lin
- Department of Pharmacology and Toxicology, College
of Pharmacy, Department of Chemistry, BIO5 Institute, The Arizona Cancer
Center, University of Arizona, 1703 East Mabel Street, Tucson, Arizona 85721, United States
| | - Raveendra
I. Mathad
- Department of Pharmacology and Toxicology, College
of Pharmacy, Department of Chemistry, BIO5 Institute, The Arizona Cancer
Center, University of Arizona, 1703 East Mabel Street, Tucson, Arizona 85721, United States
| | - Megan Carver
- Department of Pharmacology and Toxicology, College
of Pharmacy, Department of Chemistry, BIO5 Institute, The Arizona Cancer
Center, University of Arizona, 1703 East Mabel Street, Tucson, Arizona 85721, United States
| | - Danzhou Yang
- Department of Pharmacology and Toxicology, College
of Pharmacy, Department of Chemistry, BIO5 Institute, The Arizona Cancer
Center, University of Arizona, 1703 East Mabel Street, Tucson, Arizona 85721, United States
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Abstract
A method of detection for cancer genes, such as B-cell lymphoma 2 gene, has been developed using surface-enhanced Raman scattering-active substrates. This method uses Raman active dye-labeled DNA gene probes and metallic nanostructures as surface-enhanced Raman scattering-active platforms. A self-assembled monolayer system composed of mercapto hexane-labeled, single-strand DNA (SH-(CH2)6-ssDNA/ 6-mercapto-1-hexanol) is formed on a silver surface. The Raman-active dye-labeled gene is hybridized with its complementary probe, which is immobilized on the silver surface. The surface-enhanced Raman gene probes in this study can be used to detect DNA targets via hybridization to complementary DNA probes. The probes do not involve the use of radioactive labels and have great potential to provide both sensitivity and selectivity. The utility of this approach is investigated.
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Affiliation(s)
- Mustafa Culha
- Advanced Biomedical Science and Technology Group, Oak Ridge National Laboratory, TN 37831-6101, USA
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Abstract
OBJECT The outcome of peripheral nerve damage in still not satisfactory, despite the general capacity of peripheral nervous system to regenerate. The molecular mechanisms underlying nerve regeneration are still not clear, but it is likely that apoptosis regulating genes plays a crucial role in these processes. The aim of the present study was to establish the role of the anti-apoptotic gene bcl-2 in peripheral nerve repair. MATERIAL AND METHODS Sciatic nerves of bcl-2-deficient and wild type mice were transected, and immediately re-sutured. The regeneration was assessed functionally and morphologically throughout the 4-week follow-up. RESULTS We found markedly worse sciatic function index outcome, as well as more significant atrophy of denervated muscles in bcl-2 knock-out animals when compared with wild-type ones. The intensity of histological regeneration features, including GAP-43-positive growth cones, Schwann cells and macrophages in the distal stump of the transected nerve, was also decreased. The number of motor and sensory neurons in the relevant cross-sections of spinal cord was similar in both groups of mice. CONCLUSION We concluded that the bcl-2 gene plays an important role in peripheral nerve regeneration, influencing nerve injury site clearing, fiber regrowth and myelination.
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Affiliation(s)
- Katarzyna Kotulska
- Department of Neurology and Epileptology, The Children's Memorial Health Institute, Warsaw, Poland
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Li J, Li P, Wang JF, Xi YF. [Significance of microRNA-16 and bcl-2 expression in T lymphoblastic lymphoma/leukemia and its relation with prognosis]. Zhonghua Bing Li Xue Za Zhi 2013; 42:748-752. [PMID: 24447552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To study the expression of miR-16 and bcl-2 in T lymphoblastic lymphoma/leukemia (T-LBL/ALL) and its relationship to prognosis. METHODS 70 cases of T-LBL/ALL with follow-up data were studied by using immunohistochemical EnVision method for CD1a, CD3, cCD3, CD7, CD10, CD20, CD23, CD34, CD43, CD45RO, CD99, TDT, MPO, bcl-2 and Ki-67. The expression levels of miR-16 were examined by TaqMan real-time polymerase chain reaction (RT-PCR). Thirty cases of reactive lymph node were selected as control. RESULTS Among the 70 cases of T-LBL/ALL, the percentages of tumor cells expression of TDT, CD99, CD3, CD7, CD10, CD34, CD1a, cCD3, bcl-2, CD45RO and CD43 were 94.3% (66/70), 94.3% (66/70), 68.6% (48/70), 92.9% (65/70), 32.9% (23/70), 24.3% (17/70), 40.0% (28/70), 51.4% (36/70), 34.3% (24/70), 37.1% (26/70), and 48.6% (34/70). Separately, while tumor cells expression of MPO, CD20 and CD23 was all negative. A figure of Ki-67 expression > 80% was found in 24 cases and ≤ 80% in 46 cases. The expression of miR-16 was up-regulated in T-LBL/ALL, and it was 5.07 times of the reactive lymph node(P = 0.001). The high expression group of miR-16 was significantly correlated with longer over survival (P = 0.041). The prognosis of negative bcl-2 group was better than bcl-2 positive one(P = 0.904). The relationship of miR-16 and bcl-2 was significant(P = 0.042,χ(2) = 4.147). Survival multivariate COX proportional hazard regression analysis revealed that the low expression of miR-16 might be a independent poor prognosis factor (P = 0.049). CONCLUSIONS While the high expression group of miR-16 has longer OS than that in low expression group. The prognosis of bcl-2 negative was better than bcl-2 positive. miR-16 may be a independent prognosis factor. The relationship of miR-16 and bcl-2 might suggested that gene regulation may be influenced by them.
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Affiliation(s)
- Jing Li
- Department of Pathology, Shanxi Tumor Hospital, Shanxi Medical University, Taiyuan 030013, China
| | - Peng Li
- Department of Pathology, Shanxi Tumor Hospital, Shanxi Medical University, Taiyuan 030013, China
| | - Jin-fen Wang
- Department of Pathology, Shanxi Tumor Hospital, Shanxi Medical University, Taiyuan 030013, China
| | - Yan-feng Xi
- Department of Pathology, Shanxi Tumor Hospital, Shanxi Medical University, Taiyuan 030013, China. E-mail:
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