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Herd CS, Yu X, Cui Y, Franz AWE. Identification of the extracellular metallo-endopeptidases ADAM and ADAMTS in the yellow fever mosquito Aedes aegypti. Insect Biochem Mol Biol 2022; 148:103815. [PMID: 35932972 DOI: 10.1016/j.ibmb.2022.103815] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 07/15/2022] [Accepted: 07/23/2022] [Indexed: 06/15/2023]
Abstract
The mosquito Aedes aegypti is a major vector for dengue, Zika, yellow fever, and chikungunya (CHIKV) viruses, which cause significant morbidity and mortality among human populations in the tropical regions of the world. Following ingestion of a viremic bloodmeal from a vertebrate host, an arbovirus needs to productively infect the midgut epithelium of the mosquito. De novo synthesized virions then exit the midgut by traversing the surrounding basal lamina (BL) in order to disseminate to secondary tissues and infect those. Once the salivary glands are infected, the virus is transmitted to a vertebrate host along with saliva released during probing of the mosquito. Midgut tissue distention due to bloodmeal ingestion leads to remodeling of the midgut structure and facilitates virus dissemination from the organ. Previously, we described the matrix-metalloproteinases (MMP) of Ae. aegypti as zinc ion dependent endopeptidases (Metzincins) and showed MMP activity during midgut BL rearrangement as a consequence of bloodmeal ingestion and subsequent digestion thereby affecting arbovirus dissemination from the midgut. Here we investigate the ADAM/ADAMTS of Ae. aegypti, which form another major group of multi-domain proteinases within the Metzincin superfamily and are active during extra-cellular matrix (ECM) remodeling. Seven different ADAM and five ADAMTS were identified in Ae. aegypti. The functional protein domain structures of the identified mosquito ADAM resembled those of human ADAM10, ADAM12, and ADAM17, while two of the five mosquito ADAMTS had human orthologs. Expression profiling of Ae. aegypti ADAM/ADAMTS in immature forms, whole body-females, midguts, and ovarian tissues showed transcriptional activity of the proteinases during metamorphosis, bloodmeal ingestion/digestion, and female reproduction. Custom-made antibodies to ADAM10a and ADAM12c showed that both were strongly expressed in midgut and ovarian tissues. Furthermore, transient silencing of ADAM12c significantly reduced the carcass infection rate with CHIKV at 24 h post-infection, while silencing of ADAM12a significantly increased viral titers in secondary tissues at the same time point. Our results indicate a functional specificity for several ADAM/ADAMTS in those selected mosquito tissues.
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Affiliation(s)
- Christie S Herd
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, 65211, USA.
| | - Xiudao Yu
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, 65211, USA.
| | - Yingjun Cui
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, 65211, USA.
| | - Alexander W E Franz
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, 65211, USA.
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Lew MV, Ren Y, Lowder YP, Siamakpour-Reihani S, Ramalingam S, Romero KM, Thompson JC, Bohannon LM, McIntyre J, Tang H, Van Opstal J, Johnson E, Cohen HJ, Bartlett DB, Pastva AM, Morey M, Hall KS, Smith P, Peters KB, Somers TJ, Kelleher S, Smith SK, Wischmeyer PE, Lin PH, Wood WA, Thorpe G, Minor K, Wiggins K, Hennig T, Helms T, Welch R, Matthews B, Liu J, Burleson J, Aberant T, Engemann AK, Henshall B, Darby M, Proch C, Dellascio M, Pittman A, Suminguit J, Choi T, Gasparetto C, Long GD, Lopez RD, Sarantopoulos S, Horwitz ME, Chao NJ, Sung AD. Geriatric Assessment Reveals Actionable Impairments in Hematopoietic Stem Cell Transplantation Candidates Age 18 to 80 Years. Transplant Cell Ther 2022; 28:498.e1-498.e9. [PMID: 35595226 PMCID: PMC10042624 DOI: 10.1016/j.jtct.2022.05.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 10/18/2022]
Abstract
Allogeneic hematopoietic stem cell transplantation (HCT) is a potentially curative treatment for both malignant and nonmalignant hematologic diseases; however, reported rates of treatment-related mortality approach 30%. Outcomes are worse in patients who begin HCT with functional impairments. To detect such impairments, a geriatric assessment (GA) is recommended in adults age ≥65 years. Younger HCT candidates also may be impaired because of chemotherapy regimens pre-HCT. Therefore, we hypothesized that GA can be beneficial for adult patients of all ages and subsequently created a clinical pretransplantation optimization program to assess all HCT candidates using a modified GA. One-hundred fifty-seven patients were evaluated in 4 functional domains- physical, cognitive, nutritional, and psychological-at 2 time points prior to HCT-new patient evaluation (NPE) and sign-off (SO)-between October 2017 and January 2020. At NPE, 80.9% of the patients had at least 1 domain with a functional impairment, and physical (P = .006), cognitive (P = .04), and psychological (P = .04) impairments were associated with an increased likelihood of not proceeding to HCT. In addition, patients age 18 to 39 years were more likely than older patients to have a physical function impairment (P = .001). Between NPE and SO, 51.9% of the patients had resolution of 1 or more impairments, and nutritional impairment at SO was predictive of worse overall survival (P = .01). Our study shows that GA can identify functional impairments in patients of all ages. Early identification of impairments could facilitate referrals to supportive care and resolution of impairments prior to HCT, suggesting that GA could be recommended for HCT candidates of all ages.
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Affiliation(s)
- Meagan V Lew
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Yi Ren
- Duke Cancer Institute Biostatistics Shared Resources, Durham, North Carolina
| | - Yen P Lowder
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Sharareh Siamakpour-Reihani
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Sendhilnathan Ramalingam
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | | | - Jillian C Thompson
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Lauren M Bohannon
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Jackie McIntyre
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Helen Tang
- Duke University School of Medicine, Durham, North Carolina
| | - Jolien Van Opstal
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina; Faculty of Medicine, KU Leuven, Leuven, Belgium
| | - Ernaya Johnson
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Harvey Jay Cohen
- Claude D. Pepper Older Americans Independence Center, Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina
| | - David B Bartlett
- Claude D. Pepper Older Americans Independence Center, Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina; School of Biosciences and Medicine, University of Surrey, Surrey, United Kingdom
| | - Amy M Pastva
- Claude D. Pepper Older Americans Independence Center, Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina; Department of Orthopedic Surgery, Division of Physical Therapy, Duke University Medical Center, Durham, North Carolina
| | - Miriam Morey
- Claude D. Pepper Older Americans Independence Center, Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina; Geriatric Research, Education and Clinical Center, Durham VA Healthcare System, Durham, North Carolina
| | - Katherine S Hall
- Claude D. Pepper Older Americans Independence Center, Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina; Geriatric Research, Education and Clinical Center, Durham VA Healthcare System, Durham, North Carolina
| | - Patrick Smith
- Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina
| | - Katherine B Peters
- Departments of Neurology and Neurosurgery, The Preston Robert Tisch Brain Tumor Center, Duke University Medical Center, Durham, North Carolina
| | - Tamara J Somers
- Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina
| | - Sarah Kelleher
- Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, North Carolina
| | - Sophia K Smith
- School of Nursing, Duke University Medical Center, Durham, North Carolina
| | - Paul E Wischmeyer
- Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina
| | - Pao-Hwa Lin
- Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina
| | - William A Wood
- Division of Hematology, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Glynnis Thorpe
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Kerry Minor
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Kristi Wiggins
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Therese Hennig
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Tanya Helms
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Renee Welch
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Brittany Matthews
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - JoAnn Liu
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Jill Burleson
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Thomas Aberant
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Ashley K Engemann
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Bethany Henshall
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Maurisa Darby
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Christina Proch
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Michelle Dellascio
- Duke Health Department of Physical Therapy and Occupational Therapy, Durham, North Carolina
| | - Alyssa Pittman
- Duke Health Department of Physical Therapy and Occupational Therapy, Durham, North Carolina
| | - Jacob Suminguit
- University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Taewoong Choi
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Cristina Gasparetto
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Gwynn D Long
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Richard D Lopez
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Stefanie Sarantopoulos
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina
| | - Mitchell E Horwitz
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Nelson J Chao
- Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University Medical Center, Durham, North Carolina
| | - Anthony D Sung
- Division of Hematologic Malignancies and Cellular Therapy, Duke University Medical Center, Durham, North Carolina; Claude D. Pepper Older Americans Independence Center, Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina.
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Avelar GST, Gonçalves LO, Guimarães FG, Guimarães PAS, do Nascimento Rocha LG, Carvalho MGR, de Melo Resende D, Ruiz JC. Diversity and genome mapping assessment of disordered and functional domains in trypanosomatids. J Proteomics 2020; 227:103919. [PMID: 32721629 DOI: 10.1016/j.jprot.2020.103919] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 06/27/2020] [Accepted: 07/20/2020] [Indexed: 12/20/2022]
Abstract
The proteins that have structural disorder exemplify a class of proteins which is part of a new frontier in structural biology that demands a new understanding of the paradigm of structure/function correlations. In order to address the location, relative distances and the functional/structural correlation between disordered and conserved domains, consensus disordered predictions were mapped together with CDD domains in Leishmania braziliensis M2904, Leishmania infantum JPCM5, Trypanosoma cruzi CL-Brener Esmeraldo-like, Trypanosoma cruzi Dm28c, Trypanosoma cruzi Sylvio X10, Blechomonas ayalai B08-376 and Paratrypanosoma confusum CUL13 predicted proteomes. Our results depicts the role of protein disorder in key aspects of parasites biology highlighting: a) statistical significant association between genome structural location of protein disordered consensus stretches and functional domains; b) that disordered protein stretches appear in greater percentage at upstream or downstream position of the predicted domain; c) a possible role of structural disorder in several gene expression, control points that includes but are not limited to: i) protein folding; ii) protein transport and degradation; and iii) protein modification. In addition, for values of protein with disorder content greater than 40%, a small percentage of protein binding sites in IDPs/IDRs, a higher hypothetical protein annotation frequency was observed than expected by chance and trypanosomatid multigene families linked with virulence are rich in protein with disorder content. SIGNIFICANCE: T. cruzi and Leishmania spp are the etiological agents of Chagas disease and leishmaniasis, respectively. Currently, no vaccine or effective drug treatment is available against these neglected diseases and the knowledge about the post-transcriptional and post-translational mechanisms of these organisms, which are key for this scenario, remain scarce. This study depicts the potential impact of the proximity between protein structural disorder and functional domains in the post-transcriptional regulation of pathogenic versus human non-pathogenic trypanosomatids. Our results revealed a significant statistical relationship between the genome structural locations of these two variables and disordered regions appearing more frequently at upstream or downstream positions of the CDD locus domain. This flexibility feature would maintain structural accessibility of functional sites for post-translational modifications, shedding light into this important aspect of parasite biology. This hypothesis is corroborated by the functional enrichment analysis of disordered proteins subset that highlight the involvement of this class of proteins in protein folding, protein transport and degradation and protein modification. Furthermore, our results pointed out: a) the impact of protein disorder in the process of genome annotation (proteins tend to be annotated as hypothetical when the disorder content reaches ~40%); b) that trypanosomatid multigenic families linked with virulence have a key protein disorder content.
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Affiliation(s)
- Grace Santos Tavares Avelar
- Programa de Pós-graduação em Biologia Computacional e Sistemas, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brazil; Grupo Informática de Biossistemas, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil
| | - Leilane Oliveira Gonçalves
- Programa de Pós-graduação em Biologia Computacional e Sistemas, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brazil; Grupo Informática de Biossistemas, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil
| | - Frederico Gonçalves Guimarães
- Programa de Pós-graduação em Ciências da Saúde, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil; Grupo Informática de Biossistemas, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil
| | - Paul Anderson Souza Guimarães
- Programa de Pós-graduação em Biologia Computacional e Sistemas, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brazil; Grupo Informática de Biossistemas, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil
| | - Luiz Gustavo do Nascimento Rocha
- Programa de Pós-graduação em Ciências da Saúde, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil; Grupo Informática de Biossistemas, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil
| | | | - Daniela de Melo Resende
- Programa de Pós-graduação em Biologia Computacional e Sistemas, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brazil; Programa de Pós-graduação em Ciências da Saúde, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil; Grupo Informática de Biossistemas, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil
| | - Jeronimo Conceição Ruiz
- Programa de Pós-graduação em Biologia Computacional e Sistemas, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brazil; Programa de Pós-graduação em Ciências da Saúde, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil; Grupo Informática de Biossistemas, Instituto René Rachou, Fiocruz Minas, Belo Horizonte, MG, Brazil.
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Abstract
Background Polyomaviruses (PyVs) have a wide range of hosts, from humans to fish, and their effects on hosts vary. The differences in the infection characteristics of PyV with respect to the host are assumed to be influenced by the biochemical function of the LT-Ag protein, which is related to the cytopathic effect and tumorigenesis mechanism via interaction with the host protein. Methods We carried out a comparative analysis of codon usage patterns of large T-antigens (LT-Ags) of PyVs isolated from various host species and their functional domains and sequence motifs. Parity rule 2 (PR2) and neutrality analysis were applied to evaluate the effects of mutation and selection pressure on codon usage bias. To investigate evolutionary relationships among PyVs, we carried out a phylogenetic analysis, and a correspondence analysis of relative synonymous codon usage (RSCU) values was performed. Results Nucleotide composition analysis using LT-Ag gene sequences showed that the GC and GC3 values of avian PyVs were higher than those of mammalian PyVs. The effective number of codon (ENC) analysis showed host-specific ENC distribution characteristics in both the LT-Ag gene and the coding sequences of its domain regions. In the avian and fish PyVs, the codon diversity was significant, whereas the mammalian PyVs tended to exhibit conservative and host-specific evolution of codon usage bias. The results of our PR2 and neutrality analysis revealed mutation bias or highly variable GC contents by showing a narrow GC12 distribution and wide GC3 distribution in all sequences. Furthermore, the calculated RSCU values revealed differences in the codon usage preference of the LT-AG gene according to the host group. A similar tendency was observed in the two functional domains used in the analysis. Conclusions Our study showed that specific domains or sequence motifs of various PyV LT-Ags have evolved so that each virus protein interacts with host cell targets. They have also adapted to thrive in specific host species and cell types. Functional domains of LT-Ag, which are known to interact with host proteins involved in cell proliferation and gene expression regulation, may provide important information, as they are significantly related to the host specificity of PyVs.
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Affiliation(s)
- Myeongji Cho
- Laboratory of Computational Biology & Bioinformatics, Institute of Public Health and Environment, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea
| | - Hayeon Kim
- Department of Biomedical Laboratory Science, Kyungdong University, 815 Gyeonhwon-ro, Munmak, Wonju, Gangwondo, 24695, South Korea
| | - Hyeon S Son
- Laboratory of Computational Biology & Bioinformatics, Institute of Public Health and Environment, Graduate School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea. .,SNU Bioinformatics Institute, Interdisciplinary Graduate Program in Bioinformatics, College of Natural Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea.
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Polanco C, Samaniego Mendoza JL, Buhse T, Uversky VN, Bañuelos Chao IP, Bañuelos Cedano MA, Tavera FM, Tavera DM, Falconi M, Ponce de León AV. On the Regularities of the Polar Profiles of Proteins Related to Ebola Virus Infection and their Functional Domains. Cell Biochem Biophys 2018; 76:411-31. [PMID: 29511990 DOI: 10.1007/s12013-018-0839-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 02/16/2018] [Indexed: 11/25/2022]
Abstract
The number of fatalities and economic losses caused by the Ebola virus infection across the planet culminated in the havoc that occurred between August and November 2014. However, little is known about the molecular protein profile of this devastating virus. This work represents a thorough bioinformatics analysis of the regularities of charge distribution (polar profiles) in two groups of proteins and their functional domains associated with Ebola virus disease: Ebola virus proteins and Human proteins interacting with Ebola virus. Our analysis reveals that a fragment exists in each of these proteins—one named the “functional domain”—with the polar profile similar to the polar profile of the protein that contains it. Each protein is formed by a group of short sub-sequences, where each fragment has a different and distinctive polar profile and where the polar profile between adjacent short sub-sequences changes orderly and gradually to coincide with the polar profile of the whole protein. When using the charge distribution as a metric, it was observed that it effectively discriminates the proteins from their functional domains. As a counterexample, the same test was applied to a set of synthetic proteins built for that purpose, revealing that any of the regularities reported here for the Ebola virus proteins and human proteins interacting with Ebola virus were not present in the synthetic proteins. Our results indicate that the polar profile of each protein studied and its corresponding functional domain are similar. Thus, when building each protein from its functional domai—adding one amino acid at a time and plotting each time its polar profile—it was observed that the resulting graphs can be divided into groups with similar polar profiles.
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Lee YH, Pang SW, Poh CL, Tan KO. Distinct functional domains of PNMA5 mediate protein-protein interaction, nuclear localization, and apoptosis signaling in human cancer cells. J Cancer Res Clin Oncol 2016; 142:1967-77. [PMID: 27424190 DOI: 10.1007/s00432-016-2205-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 07/08/2016] [Indexed: 12/25/2022]
Abstract
PURPOSE Members of paraneoplastic Ma (PNMA) family have been identified as onconeuronal antigens, which aberrant expressions in cancer cells of patients with paraneoplastic disorder (PND) are closely linked to manifestation of auto-immunity, neuro-degeneration, and cancer. The purpose of present study was to determine the role of PNMA5 and its functional relationship to MOAP-1 (PNMA4) in human cancer cells. METHODS PNMA5 mutants were generated through deletion or site-directed mutagenesis and transiently expressed in human cancer cell lines to investigate their role in apoptosis, subcellular localization, and potential interaction with MOAP-1 through apoptosis assays, fluorescence microscopy, and co-immunoprecipitation studies, respectively. RESULTS Over-expressed human PNMA5 exhibited nuclear localization pattern in both MCF-7 and HeLa cells. Deletion mapping and mutagenesis studies showed that C-terminus of PNMA5 is responsible for nuclear localization, while the amino acid residues (391KRRR) within the C-terminus of PNMA5 are required for nuclear targeting. Deletion mapping and co-immunoprecipitation studies showed that PNMA5 interacts with MOAP-1 and N-terminal domain of PNMA5 is required for interaction with MOAP-1. Furthermore, co-expression of PNMA5 and MOAP-1 in MCF-7 cells significantly enhanced chemo-sensitivity of MCF-7 to Etoposide treatment, indicating that PNMA5 and MOAP-1 interact synergistically to promote apoptotic signaling in MCF-7 cells. CONCLUSIONS Our results show that PNMA5 promotes apoptosis signaling in HeLa and MCF-7 cells and interacts synergistically with MOAP-1 through its N-terminal domain to promote apoptosis and chemo-sensitivity in human cancer cells. The C-terminal domain of PNMA5 is required for nuclear localization; however, both N-and C-terminal domains of PNMA5 appear to be required for pro-apoptotic function.
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Affiliation(s)
- Yong Hoi Lee
- Department of Biological Sciences, Faculty of Science and Technology, Sunway University, No.5 Jalan Universiti, Bandar Sunway, 46150, Petaling Jaya, Selangor, Malaysia
| | - Siew Wai Pang
- Department of Biological Sciences, Faculty of Science and Technology, Sunway University, No.5 Jalan Universiti, Bandar Sunway, 46150, Petaling Jaya, Selangor, Malaysia
| | - Chit Laa Poh
- Department of Biological Sciences, Faculty of Science and Technology, Sunway University, No.5 Jalan Universiti, Bandar Sunway, 46150, Petaling Jaya, Selangor, Malaysia
| | - Kuan Onn Tan
- Department of Biological Sciences, Faculty of Science and Technology, Sunway University, No.5 Jalan Universiti, Bandar Sunway, 46150, Petaling Jaya, Selangor, Malaysia.
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Jelsma J, Maart S. Should additional domains be added to the EQ-5D health-related quality of life instrument for community-based studies? An analytical descriptive study. Popul Health Metr 2015; 13:13. [PMID: 26045697 PMCID: PMC4455977 DOI: 10.1186/s12963-015-0046-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 05/22/2015] [Indexed: 11/30/2022] Open
Abstract
Background There is increasing interest in monitoring the health-related quality of life (HRQoL) of populations as opposed to clinical populations. The EQ-5D identifies five domains as being most able to capture the HRQoL construct. The question arises as to whether these domains are adequate within a community-based population or whether additional domains would add to the explanatory power of the instrument. Methods As part of a community-based survey, the responses of 310 informants who reported at least one problem in one domain filled in the EQ-5D three-level version and the WHOQOL-BREF (World Health Organization Quality of Life Scale – Abbreviated version). Using the EQ-5D visual analogue scale (VAS) of rating of health as a dependent variable, the five EQ-5D and four selected WHOQOL-BREF items were entered as dummy variables in multiple regression analysis. Results The additional domains increased the explanatory power of the model from 52 % (EQ-5D only) to 57 % (all domains). The coefficients of Self-Care and Usual Activities were not significant in any model. The most parsimonious model included the EQ-5D domains of Mobility, Pain/Discomfort, Anxiety/Depression, Concentration, and Sleep (adjusted r2 = .57). Conclusions The EQ-5D-3L performed well, but the addition of domains such as Concentration and Sleep increased the explanatory power. The user needs to weigh the advantage of using the EQ-5D, which allows for the calculation of a single summary index, against the use of a set of domains that are likely to be more responsive to differences in HRQoL within community living respondents. The poor predictive power of the Self-Care and Usual Activities domains within this context needs to be further examined.
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Affiliation(s)
- Jennifer Jelsma
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Health Sciences, University of Cape Town, Anzio Road, Observatory, Cape Town, South Africa
| | - Soraya Maart
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Health Sciences, University of Cape Town, Anzio Road, Observatory, Cape Town, South Africa
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Meng F, Wang R, Xu T. Identification of 21 novel immune-type receptors in miiuy croaker and expression pattern of three typical inhibitory members. Dev Comp Immunol 2014; 45:269-277. [PMID: 24704213 DOI: 10.1016/j.dci.2014.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 11/21/2013] [Revised: 03/21/2014] [Accepted: 03/24/2014] [Indexed: 06/03/2023]
Abstract
Novel immune-type receptor (NITR) genes belong to the immunoglobulin superfamily and are encoded by clusters of multigene families. NITRs encode type I transmembrane proteins and are only found in teleosts. In the current study, total 21 NITR genes are identified from miiuy croaker (Miichthys miiuy) and named as MmNITR1 to MmNITR21. Miiuy croaker NITR genes that encoded one or two extracellular immunoglobulin (Ig) domains, a transmembrane (TM) region, an immunoreceptor tyrosine-based inhibitor motif (ITIM) in the cytoplasmic (Cyt) region. The majority of MmNITRs possess cytoplasmic ITIM that can be classified as inhibitory receptors. However, a smaller number of NITRs (MmNITR8, MmNITR15 and MmNITR16) can be classified as activating receptors by the lack of cytoplasmic ITIMs and presence of a positively charged residue within their transmembrane domain. As typical inhibitory receptors, MmNITR1, MmNITR2 and MmNITR3 have different characteristics of the structure. In MmNITR1 gene, variable (V) and intermediate (I) domains are encoded by two separate exons. In contrast to MmNITR1, MmNITR3 gene encode V and I domains in a single exon. And MmNITR2 gene is characterized by the presence of only one Ig-like (V-type) extracellular domain and lack of J or J-like motifs. Also MmNITR2 gene displays an additional exon which is 48bp long between the V domain and the TM region. Two and four potential N-link giycosylation sites (N-X-S/T) are present in the extracellular Ig domains. Real-time RT-PCR results showed that upon induction with Vibrio anguillarum, NITR gene expressions were induced by bacteria in kidney, liver and spleen. Meanwhile, NITRs are also primarily detected in different tissues. Phylogenetic analyses of NITR V domains indicate that MmNITR1 and MmNITR2 are more similar than MmNITR3.
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Affiliation(s)
- Fanqiang Meng
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China
| | - Rixin Wang
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China
| | - Tianjun Xu
- Laboratory of Fish Biogenetics & Immune Evolution, College of Marine Science, Zhejiang Ocean University, Zhoushan 316022, China.
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