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de Castro Alves CE, Bogza SL, Bohdan N, Rozhenko AB, de Freitas Gomes A, de Oliveira RC, de Azevedo RG, Maciel LRS, Dhyani A, Grafov A, Pontes GS. Pharmacological assessment of the antineoplastic and immunomodulatory properties of a new spiroindolone derivative (7',8'-Dimethoxy-1',3'-dimethyl-1,2,3',4'-tetrahydrospiro[indole-3,5'-pyrazolo[3,4-c]isoquinolin]-2-one) in chronic myeloid leukemia. Invest New Drugs 2023; 41:629-637. [PMID: 37452982 DOI: 10.1007/s10637-023-01382-3] [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: 05/09/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
The discovery and development of effective novel compounds is paramount in oncology for improving cancer therapy. In this study, we developed a new derivative of spiroindolone (7',8'-Dimethoxy-1',3'-dimethyl-1,2,3',4'-tetrahydrospiro[indole-3,5'- pyrazolo[3,4-c]isoquinolin]-2-one) and evaluated its anticancer- and immunomodulatory potential in a vitro model of chronic leukemia. We utilized the chronic leukemia cell line K562, as well as non-cancerous peripheral blood mononuclear cells (PBMC) and Vero cells (kidney epithelium of Cercopithecus aethiops). We assessed the cytotoxicity of the compound using the MTT assay, and performed cell cycle assays to determine its impact on different stages of the cell cycle. To evaluate its antineoplastic activity, we conducted a colony formation test to measure the effect of the compound on the clonal growth of cancer cells. Furthermore, we evaluated the immunomodulatory activity of the compound by measuring the levels of pro and anti-inflammatory cytokines. The study findings demonstrate that the spiroindolone-derived compound exerted noteworthy cytotoxic effects against K562 cells, with an IC50 value of 25.27 µg/mL. Additionally, it was observed that the compound inhibited the clonal proliferation of K562 cells while displaying minimal toxicity to normal cells. The compound exhibited its antiproliferative activity by inducing G2/M cell cycle arrest, preventing the entry of K562 cells into mitosis. Notably, the compound demonstrated an immunomodulatory effect by upregulating the production of cytokines IL-6 and IL-12/23p40. In conclusion, the spiroindolone-derived compound evaluated in this study has demonstrated significant potential as a therapeutic agent for the treatment of chronic myeloid leukemia. Further investigations are warranted to explore its clinical applications.
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Affiliation(s)
- Carlos Eduardo de Castro Alves
- Post-Graduate Program in Basic and Applied Immunology, Institute of Biological Science, Federal University of Amazonas, Manaus, 69077-000, AM, Brazil
- Laboratory of Virology and Immunology, National Institute of Amazonian Research (INPA), Manaus, 69067- 375, AM, Brazil
| | - Serge L Bogza
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str. 5, Kyiv, 02094, Ukraine
| | - Nathalie Bohdan
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str. 5, Kyiv, 02094, Ukraine
| | - Alexander B Rozhenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str. 5, Kyiv, 02094, Ukraine
- National Technical University of Ukraine 'Igor Sikorsky Kyiv Polytechnic Institute', Beresteiskyi prosp. 37, Kyiv, 03056, Ukraine
| | - Alice de Freitas Gomes
- Post-Graduate Program in Hematology, Foundation of Hematology and Hemotherapy of Amazonas, The State University of Amazon, Manaus, 69050-010, AM, Brazil
| | - Regiane Costa de Oliveira
- Post-Graduate Program in Basic and Applied Immunology, Institute of Biological Science, Federal University of Amazonas, Manaus, 69077-000, AM, Brazil
| | - Renata Galvão de Azevedo
- Post-Graduate Program in Basic and Applied Immunology, Institute of Biological Science, Federal University of Amazonas, Manaus, 69077-000, AM, Brazil
| | - Larissa Raquel Silva Maciel
- Laboratory of Virology and Immunology, National Institute of Amazonian Research (INPA), Manaus, 69067- 375, AM, Brazil
| | - Anamika Dhyani
- Post-Graduate Program in Hematology, Foundation of Hematology and Hemotherapy of Amazonas, The State University of Amazon, Manaus, 69050-010, AM, Brazil
| | - Andriy Grafov
- Materials Chemistry Division, Department of Chemistry, University of Helsinki, A.I. Virtasen aukio 1, Helsinki, 00560, Finland
| | - Gemilson Soares Pontes
- Post-Graduate Program in Basic and Applied Immunology, Institute of Biological Science, Federal University of Amazonas, Manaus, 69077-000, AM, Brazil.
- Laboratory of Virology and Immunology, National Institute of Amazonian Research (INPA), Manaus, 69067- 375, AM, Brazil.
- Post-Graduate Program in Hematology, Foundation of Hematology and Hemotherapy of Amazonas, The State University of Amazon, Manaus, 69050-010, AM, Brazil.
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Singh M, Dasila K, Chettri A, Jain R, Dhyani A, Pandey A. Phytochemicals, Antioxidant and Antimicrobial Potential of Ethnomedicinal Plants of Sikkim Himalaya. Indian J Pharm Sci 2023. [DOI: 10.36468/pharmaceutical-sciences.1083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
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Dhyani A, Bhatia K, Sharma S, Tewari B, Mandal P. Optical transmission through MDM plasmonic tri-layer consisting of T and L shape periodic structures. Journal of Taibah University for Science 2021. [DOI: 10.1080/16583655.2021.1990824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- A. Dhyani
- Department of Applied Sciences, School of Engineering, University of Petroleum and Energy Studies, Dehradun, India
| | - K.S. Bhatia
- Department of Electronics, G.B. Pant Institute of Engineering and Technology, Pauri Garhwal, India
| | - Sudesh Sharma
- Department of Physics, R.P. Degree College, Kamalganz, Farrukhabad, India
| | - B.S. Tewari
- Department of Applied Sciences and Humanities, G.B. Pant Institute of Engineering and Technology, Pauri Garhwal, India
| | - P. Mandal
- Department of Applied Sciences, School of Engineering, University of Petroleum and Energy Studies, Dehradun, India
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Freitas E, Ferreira W, Filho R, Oliveira C, Dhyani A, Silva L, Fraiji N, Ferreira C. MOLECULAR CHARACTERIZATION OF CHRYSEOBACTERIUM INDOLOGENES WITH MULTIDRUG RESISTANCE IN THE BRAZILIAN AMAZON REGION. Hematol Transfus Cell Ther 2020. [DOI: 10.1016/j.htct.2020.10.760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Engineer R, Saklani A, D'souza A, Mokal S, Dhyani A, Chopra S. PO-1108: SCRT and chemotherapy vs LCRT for unresectable rectal cancers. A propensity matchedpair analysis. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01125-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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de Melo Silva J, Pinheiro-Silva R, Dhyani A, Pontes GS. Cytomegalovirus and Epstein-Barr Infections: Prevalence and Impact on Patients with Hematological Diseases. Biomed Res Int 2020; 2020:1627824. [PMID: 33163531 PMCID: PMC7605947 DOI: 10.1155/2020/1627824] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/05/2020] [Accepted: 10/06/2020] [Indexed: 12/14/2022]
Abstract
Cytomegalovirus (CMV) and Epstein-Barr virus (EBV) infections are widely distributed throughout the world. EBV is linked to various hematological and autoimmune disorders whereas CMV might play important role in the progression of chronic hematological diseases, such as hemoglobinopathies, lymphomas, myelomas, hemophilia, and aplastic and sickle cell anemia. Both viruses produce a viral homolog of human interleukin-10 that can cause general suppression of immune response, increasing susceptibility to other infections. These viruses can remain latent in the host cells and be reactivated when the host immune system is compromised. Studies showing the impact of CMV and EBV infections on hematological disorders are scarce and unclear in the context of coinfection. This review intends to present the biology, prevalence, and impact of CMV and EBV infections in patients with hematological diseases.
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Affiliation(s)
- Jean de Melo Silva
- Programa de Pós-graduação em Hematologia, Universidade do Estado do Amazonas, Manaus-Amazonas, Brazil
| | - Renato Pinheiro-Silva
- Programa de Pós-graduação em Hematologia, Universidade do Estado do Amazonas, Manaus-Amazonas, Brazil
| | - Anamika Dhyani
- Programa de Pós-graduação em Hematologia, Universidade do Estado do Amazonas, Manaus-Amazonas, Brazil
| | - Gemilson Soares Pontes
- Programa de Pós-graduação em Hematologia, Universidade do Estado do Amazonas, Manaus-Amazonas, Brazil
- Laboratório de Virologia e Imunologia, Coordenação Sociedade, Ambiente e Saúde, Instituto Nacional de Pesquisas da Amazônia (INPA), Manaus-Amazonas, Brazil
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Dhyani A, Favaro P, Olalla Saad ST. ANKHD1 is an S phase protein required for histone synthesis and DNA repair in multiple myeloma cells. Blood Cells Mol Dis 2020; 84:102460. [PMID: 32562952 DOI: 10.1016/j.bcmd.2020.102460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/04/2020] [Accepted: 06/07/2020] [Indexed: 11/17/2022]
Abstract
ANKHD1 is highly expressed in various cancers such as leukemia and multiple myeloma. Silencing of ANKHD1 expression leads to decreased cell proliferation and accumulation of cells at the S phase. In this study we found ANKHD1 expression to be higher at the S phase, suggesting it to be an S phase protein. We observed that ANKHD1 interacts with histone promoter regions and its inhibition downregulates expression of all core histones, implying a role in histone synthesis. Since histone synthesis occurs in parallel with DNA replication at S phase, we evaluated PCNA (Proliferating Cell Nuclear Antigen) expression, a protein involved in DNA replication and repair. PCNA expression was found to be significantly decreased in ANKHD1 silenced cells. We further observed accumulation γH2AX, a marker for DNA double stranded breaks and an early sign of DNA damage induced by replication stress, upon ANKHD1 silencing. The expressions of several genes implicated in DNA repair were also modulated in ANKHD1 silenced cells, confirming the role of ANKHD1 in DNA repair. Based on this study we speculate that ANKHD1 is an S phase protein required for histone synthesis and DNA repair. These results however, are preliminary and require thorough investigation.
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Affiliation(s)
- Anamika Dhyani
- Hematology and Hemotherapy Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil.
| | - Patricia Favaro
- Department of Biological Sciences, Federal University of Sao Paulo, Diadema, São Paulo, Brazil
| | - Sara T Olalla Saad
- Hematology and Hemotherapy Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
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Costa de Oliveira R, Soares Pontes G, Kostyuk A, Coutinho Camargo GB, Dhyani A, Shvydenko T, Shvydenko K, Grafov A. Anticancer and Immunomodulatory Activities of a Novel Water-Soluble Derivative of Ellipticine. Molecules 2020; 25:molecules25092130. [PMID: 32370100 PMCID: PMC7248987 DOI: 10.3390/molecules25092130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 03/23/2020] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 12/26/2022] Open
Abstract
Cancer still remains a major public health concern around the world and the search for new potential antitumor molecules is essential for fighting the disease. This study evaluated the anticancer and immunomodulatory potential of the newly synthetized ellipticine derivate: sodium bromo-5,11-dimethyl-6H-pyrido[4,3-b]carbazole-7-sulfonate (Br-Ell-SO3Na). It was prepared by the chlorosulfonation of 9-bromoellipticine. The ellipticine-7-sulfonic acid itself is not soluble, but its saponification with sodium hydroxide afforded a water-soluble sodium salt. The cytotoxicity of Br-Ell-SO3Na was tested against cancerous (K562 cell line) and non-cancerous cells (Vero cell line and human peripheral blood mononuclear cells (PBMC)) using a Methylthiazoletetrazolium (MTT) assay. Cell cycle arrest was assessed by flow cytometry and the immunomodulatory activity was analyzed through an enzyme-linked immunosorbent assay (ELISA). The results showed that the Br-Ell-SO3Na molecule has specific anticancer activity (IC50 = 35 µM) against the K562 cell line, once no cytotoxicity effect was verified against non-cancerous cells. Cell cycle analysis demonstrated that K562 cells treated with Br-Ell-SO3Na were arrested in the phase S. Moreover, the production of IL-6 increased and the expression of IL-8 was inhibited in the human PBMC treated with Br-Ell-SO3Na. The results demonstrated that Br-Ell-SO3Na is a promising anticancer molecule attested by its noteworthy activity against the K562 tumor cell line and immunomodulatory activity in human PBMC cells.
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Affiliation(s)
- Regiane Costa de Oliveira
- Programa de Pós-Graduação em Hematologia, Universidade do Estado do Amazonas, Av. Djalma Batista, 3578-Flores, Manaus-AM, Brazil; (R.C.d.O.); (G.S.P.); (G.B.C.C.)
| | - Gemilson Soares Pontes
- Programa de Pós-Graduação em Hematologia, Universidade do Estado do Amazonas, Av. Djalma Batista, 3578-Flores, Manaus-AM, Brazil; (R.C.d.O.); (G.S.P.); (G.B.C.C.)
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, 2.936-Petrópolis-Manaus-AM, Brazil;
| | - Aleksandr Kostyuk
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Str. 5, 02660 Kyiv, Ukraine; (A.K.); (K.S.)
| | - Gabriel B. Coutinho Camargo
- Programa de Pós-Graduação em Hematologia, Universidade do Estado do Amazonas, Av. Djalma Batista, 3578-Flores, Manaus-AM, Brazil; (R.C.d.O.); (G.S.P.); (G.B.C.C.)
| | - Anamika Dhyani
- Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, 2.936-Petrópolis-Manaus-AM, Brazil;
| | - Tetiana Shvydenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Str. 5, 02660 Kyiv, Ukraine; (A.K.); (K.S.)
- JSC “Farmak”, Kyrylivska str. 63, 04080 Kyiv, Ukraine
- Correspondence:
| | - Kostiantyn Shvydenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Str. 5, 02660 Kyiv, Ukraine; (A.K.); (K.S.)
- JSC “Farmak”, Kyrylivska str. 63, 04080 Kyiv, Ukraine
| | - Andriy Grafov
- Department of Chemistry, University of Helsinki, 00014 Helsinki, Finland;
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Cesar P, Dhyani A, Augusto Schwade L, Acordi P, Xerez Albuquerque C, Nina R, De Paula EV, Fraiji N. Epidemiological, clinical, and severity characterization of sickle cell disease in a population from the Brazilian Amazon. Hematol Oncol Stem Cell Ther 2019; 12:204-210. [DOI: 10.1016/j.hemonc.2019.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 03/21/2019] [Accepted: 04/28/2019] [Indexed: 11/25/2022] Open
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Abou-Ali RK, Dhyani A, Terço AL, Toro DM, Gomes KS, Tezza LC, Negreiros MA, Batista CS, Souza MKS, Sanguino ECB, Albuquerque SRL. Impact of Duffy polymorphisms on parasite density in Brazilian Amazonian patients infected by Plasmodium vivax. Malar J 2019; 18:289. [PMID: 31455368 PMCID: PMC6712886 DOI: 10.1186/s12936-019-2918-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 08/17/2019] [Indexed: 12/21/2022] Open
Abstract
Background The Duffy glycoprotein acts as the entry point for merozoites of Plasmodium vivax in the invasion of red blood cells. The host–parasite relationship has revealed new perspectives regarding the association between Duffy polymorphisms that can impact both the parasite density of this Plasmodium and the symptoms of this type of malaria. This study investigates the impact of Duffy polymorphisms on parasite density in patients infected with P. vivax in the Brazilian Amazon region. Methods Genotypes and Duffy polymorphism allele frequencies were compared in 287 patients with malaria, presenting low, medium and high density of P. vivax. The diagnosis of malaria was performed using a specialized team with a standardized clinical-laboratory method, while the Duffy genotyping was performed through the Bead Chip BioArray system. Both teams are reference services in Brazil. Results The FY*01 and FY*02 alleles were found in all three parasite density classes: low, medium and high, but when these alleles form genotypes with FY*02N.01 and FY*02W.01 alleles, they are found only in patients with low parasite density and low symptomatology. Another interesting finding found in this study is the presence of the genotype FY*02N.01/FY*02W.01 in one of the patients, presenting a very low parasite density and malaria considered subclinical, a genotype which had not been previously described in the literature. Conclusion The presence of FY*02N.01 and FY*02W.01 alleles may have an impact on the reduction of clinical manifestations in malaria, leading to the development of subclinical malaria, making the infected individual an undetected natural reservoir, which may hinder the eradication of malaria in the Amazon.
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Affiliation(s)
| | | | | | - Diana M Toro
- Blood Center of the Amazon State, HEMOAM, Manaus, Brazil
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Nagareddy P, Sreejit G, Abdel-Latif A, Athmanathan B, Annabathula R, Dhyani A, Noothi S, Quaife-Ryan G, Hudson J, Smyth S, Porrello E, Murphy A. Nlrp3 Inflammasome-Primed Neutrophils Return To The Bone Marrow To Propagate Granulopoiesis Following Myocardial Injury. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Freitas EAD, Ferreira WA, Filho RAAB, Oliveira CMCD, Dhyani A, Silva LM, Fraiji NA, Ferreira CM. Molecular Characterization of Chryseobacterium indologenes with Multidrug Resistance in the Brazilian Amazon Region. Microb Drug Resist 2018; 25:781-786. [PMID: 30585755 DOI: 10.1089/mdr.2018.0301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Chryseobacterium indologenes is an emerging nosocomial pathogen that produces IND-type chromosomal metallo-beta-lactamase. The phenotype and molecular aspects of two multidrug resistant C. indologenes strains and the analysis of the tertiary structure of the IND enzyme were studied. Identification of species and susceptibility tests were performed using the Vitek-2 compact. Chromosomal and plasmid DNA were extracted using PureLink™ Genomic DNA Mini Kit and PureLink Quick Plasmid Miniprep Kit, and the sequencing was performed using ABI 3130 genetic analyzer. Two strains were isolated and are registered as P-23 and P-113. Of the two, P-113 was sensitive to ciprofloxacin and cefepime only, whereas the P-23 showed reduced sensitivity to ceftazidime, ciprofloxacin, and tigecycline. The genetic analysis of both isolates identified the presence of the blaIND-like gene, with similarity to IND-3 and IND-8 alleles. The IND-3 identified in the P-133 sample presented a single mutation at position T355G, which corresponds to a nonsynonymous substitution of the amino acid at position 119 (Ser→Ala). The phylogenetic analysis of INDs showed lineages that are circulating in Asian and European countries. These results emphasize the need for effective preventive actions to avoid the dissemination of this type of pathogen in the hospital environment.
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Affiliation(s)
- Ellen Albuquerque de Freitas
- 1 Universidade do Estado do Amazonas-UEA, Brazil.,2 Laboratório de Genômica, Fundação de Hematologia e Hemoterapia do Amazonas-HEMOAM, Manaus, Brazil
| | - William Antunes Ferreira
- 1 Universidade do Estado do Amazonas-UEA, Brazil.,3 Laboratório de Bacteriologia, Fundação de Dermatologia Tropical e Venereologia Alfredo da Matta-FUAM, Manaus, Brazil
| | | | - Cintia Mara Costa de Oliveira
- 4 Laboratório de Diagnóstico Molecular, Universidade Federal do Amazonas, Manaus, Brazil.,5 BIONORTE, Universidade Federal do Amazonas, Brazil
| | - Anamika Dhyani
- 1 Universidade do Estado do Amazonas-UEA, Brazil.,2 Laboratório de Genômica, Fundação de Hematologia e Hemoterapia do Amazonas-HEMOAM, Manaus, Brazil
| | - Lucyane Mendes Silva
- 1 Universidade do Estado do Amazonas-UEA, Brazil.,2 Laboratório de Genômica, Fundação de Hematologia e Hemoterapia do Amazonas-HEMOAM, Manaus, Brazil
| | - Nelson Abrahim Fraiji
- 1 Universidade do Estado do Amazonas-UEA, Brazil.,2 Laboratório de Genômica, Fundação de Hematologia e Hemoterapia do Amazonas-HEMOAM, Manaus, Brazil.,6 Departamento de Atendimento a Pacientes, Fundação de Hematologia e Hemoterapia do Amazonas, HEMOAM, Brazil
| | - Cristina Motta Ferreira
- 1 Universidade do Estado do Amazonas-UEA, Brazil.,2 Laboratório de Genômica, Fundação de Hematologia e Hemoterapia do Amazonas-HEMOAM, Manaus, Brazil
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Da Dalt L, Balzarotti G, Ruscica M, Bonacina F, Dhyani A, Di Cairano E, Baragetti A, Arnaboldi L, De Metrio S, Macchi C, Botta M, Uboldi P, Perego C, Catapano A, Norata G. The PCSK9/LDLR axis impacts insulin secretion and glucose response. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Dhyani A, Pulakazhi Venu V, Baetta R, Uboldi P, Ferri N, Corsini A, Muro A, Catapano A, Norata G. The absence of the EDA alternative spliced isoform of fibronectin promotes smooth muscle cells migration and results in neo-intimal hyperplasia. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dhyani A, Machado-Neto JA, Favaro P, Saad STO. ANKHD1 represses p21 (WAF1/CIP1) promoter and promotes multiple myeloma cell growth. Eur J Cancer 2014; 51:252-9. [PMID: 25483783 DOI: 10.1016/j.ejca.2014.11.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 11/14/2014] [Indexed: 10/24/2022]
Abstract
ANKHD1 (Ankyrin repeat and KH domain-containing protein 1) is highly expressed and plays an important role in the proliferation and cell cycle progression of multiple myeloma (MM) cells. ANKHD1 downregulation modulates cell cycle gene expression and upregulates p21 irrespective of the TP53 mutational status of MM cell lines. The present study was aimed to investigate the role of ANKHD1 in MM in vitro clonogenicity and in vivo tumourigenicity, as well as the role of ANKHD1 in p21 transcriptional regulation. ANKHD1 silencing in MM cells resulted in significantly low no. of colonies formed and in slow migration as compared to control cells (p < 0.05). Furthermore, in xenograft MM mice models, tumour growth was visibly suppressed in mice injected with ANKHD1 silenced cells compared to the control group. There was a significant decrease in tumour volume (p = 0.006) as well as in weight (p = 0.02) in the group injected with silenced cells compared to those of the control group. Co-immunoprecipitation and chromatin immunoprecipitation (ChIP) assays confirmed the interaction between p21 and ANKHD1. Moreover, overexpression of ANKHD1 downregulated the activity of a p21 promoter in luciferase assays. Decrease in luciferase activity suggests a direct role of ANKHD1 in p21 transcriptional regulation. In addition confocal analysis after U266 cells were treated with Leptomycin B (LMB) for 24 h showed accumulation of ANKHD1 inside the nucleus as compared to untreated cells where ANKHD1 was found to be predominantly in cytoplasm. This suggests ANKHD1 might be shuttling between cytoplasm and nucleus. In conclusion, ANKHD1 promotes MM growth by repressing p21 a potent cell cycle regulator.
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Affiliation(s)
- Anamika Dhyani
- Hematology and Hemotherapy Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil.
| | - João A Machado-Neto
- Hematology and Hemotherapy Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
| | - Patricia Favaro
- Department of Biological Sciences, Federal University of Sao Paulo, Diadema, São Paulo, Brazil
| | - Sara T Olalla Saad
- Hematology and Hemotherapy Center-University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, Brazil
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Dhyani A, Tibolla G, Baragetti A, Garlaschelli K, Grigore L, Norata G, Catapano A. IDOL N342S gene variant is not associated with plasma lipid profile and pre-clinical carotid atherosclerosis in Italian free living population. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Dhyani A, Duarte ASS, Machado-Neto JA, Favaro P, Ortega MM, Olalla Saad ST. ANKHD1 regulates cell cycle progression and proliferation in multiple myeloma cells. FEBS Lett 2012; 586:4311-8. [PMID: 23142581 DOI: 10.1016/j.febslet.2012.10.037] [Citation(s) in RCA: 25] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 10/11/2012] [Accepted: 10/23/2012] [Indexed: 11/18/2022]
Abstract
ANKHD1 is a multiple ankyrin repeat containing protein, highly expressed in cancers, such as acute leukemia. The present study was undertaken to determine the expression and functional significance of ANKHD1 in human Multiple Myeloma (MM). We found that ANKHD1 is highly expressed in MM patient cells and cell lines. In vitro, lentiviral mediated ANKHD1-shRNA inhibited proliferation and delayed S to G2M cell cycle progression in glucocorticoid resistant (U266) and sensitive (MM1S) MM cells. Further ANKHD1 silencing resulted in upregulation of cyclin dependent kinase inhibitor p21 irrespective of the p53 status of the MM cell lines. These data suggest that ANKHD1 might have a role in MM cell proliferation and cell cycle progression by regulating expression of p21.
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Affiliation(s)
- Anamika Dhyani
- Hematology and Hemotherapy Center, University of Campinas/Hemocentro-Unicamp, Instituto Nacional de Ciência e Tecnologia do Sangue, Campinas, São Paulo, Brazil.
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Dhyani A, Nautiyal B, Nautiyal M. Importance of Astavarga plants in traditional systems of medicine in Garhwal, Indian Himalaya. International Journal of Biodiversity Science, Ecosystem Services & Management 2010. [DOI: 10.1080/21513732.2010.521490] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Abstract
BACKGROUND Prosopis juliflora (mesquite) is one of the major sources of pollinosis in tropical and semi-arid countries of the world. The present study was undertaken to purify and characterize a major cross-reactive allergen from this tree species. MATERIALS AND METHODS Mesquite pollen extract was purified using reverse-phase chromatography. Allergen characterization was done by electrophoresis, enzyme-linked immunosorbent assay (ELISA) and Western blotting. Clinical relevance of the purified protein was analyzed by in vivo (skin tests) and in vitro experiments such as ELISA, histamine release, peripheral blood mononuclear cells (PBMC) proliferation and cytokine assays. Cross-reactivity of purified protein with allergenic tree species and lima bean (food) was assessed by inhibition assays. RESULTS A 66-kDa protein was purified from mesquite pollen extract using octadecyl silica resin. Purified protein recognized 90% of mesquite-sensitized patients in skin test and ELISA. It induced significant histamine release in allergic patients' blood and interleukin-4 secretion in the PBMC culture supernatants. Inhibition assays suggested close allergenic relationship of this protein with Ailanthus excelsa, Cassia siamea, Salvadora persica pollen and Phaseolus lunatus (lima bean - an edible legume). CONCLUSIONS A 66-kDa major cross-reactive allergen was isolated from mesquite pollen using single-step purification procedure. The protein seems relevant for clinical applications in allergic disorders.
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Affiliation(s)
- A Dhyani
- Institute of Genomics and Integrative Biology, Delhi, India
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Dhyani A, Arora N, Jain VK, Sridhara S, Singh BP. Immunoglobulin E (IgE)-mediated cross-reactivity between mesquite pollen proteins and lima bean, an edible legume. Clin Exp Immunol 2007; 149:517-24. [PMID: 17614972 PMCID: PMC2219328 DOI: 10.1111/j.1365-2249.2007.03446.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Immunoglobulin E (IgE)-mediated food allergy often develops as a consequence of allergic sensitization to pollen proteins. Mesquite (Prosopis juliflora) tree pollen is reported to be cross-reactive with other pollen species, but little has been reported on its cross-reactivity with plant-derived foods belonging to the same/different families. The present study investigates the in vitro cross-reactivity of mesquite pollen and lima bean (Phaseolus lunatus), an edible seed belonging to the Leguminosae family. Of 110 patients (asthma, rhinitis or both) tested intradermally, 20 showed marked positive reactions with Prosopis pollen extract. Of these, 12 patients showed elevated specific IgE to Prosopis pollen extract alone and four to both Phaseolus and pollen extract. In vitro cross-reactivity was investigated using inhibition assays [enzyme-linked immunosorbent assay (ELISA) inhibition, immunoblot inhibition], histamine release and lymphoproliferation. P. lunatus extract could inhibit IgE binding to P. juliflora in a dose-dependent manner, requiring 400 ng of protein for 50% inhibition in ELISA assay. Immunoblot and immunoblot inhibition demonstrated the presence of 20, 26, 35, 66 and 72 kDa as shared IgE binding components between the two extracts. Histamine release, peripheral blood mononuclear cells proliferation and interleukin (IL)-4 levels also suggested allergenic cross-reactivity. In conclusion, there is humoral and cellular cross-reactivity between Prosopis pollen and Phaseolus seed allergens.
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Affiliation(s)
- A Dhyani
- Institute of Genomics and Integrative Biology, Delhi, India
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Dhyani A, Arora N, Gaur SN, Jain VK, Sridhara S, Singh BP. Analysis of IgE binding proteins of mesquite (Prosopis juliflora) pollen and cross-reactivity with predominant tree pollens. Immunobiology 2006; 211:733-40. [PMID: 17015148 DOI: 10.1016/j.imbio.2006.03.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2005] [Revised: 03/16/2006] [Accepted: 03/16/2006] [Indexed: 11/24/2022]
Abstract
Pollen from the mesquite tree, Prosopis juliflora, is an important source of respiratory allergy in tropical countries. Our aim was to partially characterize the IgE binding proteins of P. juliflora pollen extract and study cross-reactivity with prevalent tree pollen allergens. Intradermal tests with P. juliflora and five other tree pollen extracts were performed on respiratory allergy patients from Bikaner (arid) and Delhi (semi arid). Prosopis extract elicited positive skin reactions in 71/220 of the patients. Sera were collected from 38 of these 71 patients and all demonstrated elevated specific IgE to P. juliflora. Immunoblotting with pooled patients' sera demonstrated 16 IgE binding components, with components of 24, 26, 29, 31, 35, 52, 58, 66 and 95 kDa recognized by more than 80% of individual patients' sera. P. juliflora extract is allergenically potent requiring 73 ng of self-protein for 50% inhibition of IgE binding in ELISA inhibition. Cross-inhibition assays showed close relationship among P. juliflora, Ailanthus excelsa, Cassia siamea and Salvadora persica. IgE binding components of 14, 41, 52 and 66 kDa were shared allergens whereas 26 and 29 kDa were specific to P. juliflora. The findings suggest that purification of cross-reactive allergens will be helpful for diagnosis and immunotherapy of tree pollen allergic patients.
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Affiliation(s)
- Anamika Dhyani
- Institute of Genomics and Integrative Biology, Room 509, Allergy and Immunology section, Delhi University Campus, Mall Road, Delhi 110007, India
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Karau KL, Molthen RC, Dhyani A, Haworth ST, Hanger CC, Roerig DL, Johnson RH, Dawson CA. Pulmonary arterial morphometry from microfocal X-ray computed tomography. Am J Physiol Heart Circ Physiol 2001; 281:H2747-56. [PMID: 11709444 DOI: 10.1152/ajpheart.2001.281.6.h2747] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The objective of this study was to develop an X-ray computed tomographic method for pulmonary arterial morphometry. The lungs were removed from a rat, and the pulmonary arterial tree was filled with perfluorooctyl bromide to enhance X-ray absorbance. At each of four pulmonary arterial pressures (30, 21, 12, and 5.4 mmHg), the lungs were rotated within the cone of the X-ray beam that was projected from a microfocal X-ray source onto an image intensifier, and 360 images were obtained at 1 degrees increments. The three-dimensional image volumes were reconstructed with isotropic resolution with the use of a cone beam reconstruction algorithm. The luminal diameter and distance from the inlet artery were measured for the main trunk, its immediate branches, and several minor trunks. These data revealed a self-consistent tree structure wherein the portion of the tree downstream from any vessel of a given diameter has a similar structure. Self-consistency allows the entire tree structure to be characterized by measuring the dimensions of only the vessels comprising the main trunk of the tree and its immediate branches. An approach for taking advantage of this property to parameterize the morphometry and distensibility of the pulmonary arterial tree is developed.
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Affiliation(s)
- K L Karau
- Department of Physiology, Medical College of Wisconsin, Wisconsin 53295, USA
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