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1.
Brain ; 2024 Apr 17.
Artículo en Inglés | MEDLINE | ID: mdl-38630618

RESUMEN

Epstein-Barr virus (EBV) infection has been advocated as a prerequisite for developing multiple sclerosis (MS) and possibly the propagation of the disease. However, the precise mechanisms for such influences are still unclear. A large-scale study investigating the host genetics of EBV serology and related clinical manifestations, such as infectious mononucleosis (IM), may help us better understand the role of EBV in MS pathogenesis. This study evaluates the host genetic factors that influence serological response against EBV and history of IM and cross-evaluates them with MS risk and genetic susceptibility in the Swedish population. Plasma IgG antibody levels against EBV nuclear antigen-1 (EBNA-1, truncated=aa[325-641], peptide=aa[385-420]) and viral capsid antigen p18 (VCAp18) were measured using bead-based multiplex serology for 8744 MS cases and 7229 population-matched controls. The MS risk association for high/low EBV antibody levels and history of IM was compared to relevant clinical measures along with sex, age at sampling, and associated HLA allele variants. Genome-wide and HLA allele association analyses were also performed to identify genetic risk factors for EBV antibody response and IM history. Higher antibody levels against VCAp18 (OR=1.74, 95% CI=1.60-1.88) and EBNA-1, particularly the peptide (OR=3.13, 95% CI=2.93-3.35), were associated with an increased risk for MS. The risk increased with higher anti-EBNA-1 IgG levels up to twelve times the reference risk. We also identified several independent HLA haplotypes associated with EBV serology overlapping with known MS risk alleles (e.g., DRB1*15:01). Although there were several candidates, no variants outside the HLA region reached genome-wide significance. Cumulative HLA risk for anti-EBNA-1 IgG levels, particularly the peptide fragment, was strongly associated with MS. In contrast, the genetic risk for high anti-VCAp18 IgG levels was not as strongly associated with MS risk. IM history was not associated with class II HLA genes but negatively associated with A*02:01, which is protective against MS. Our findings emphasize that the risk association between anti-EBNA-1 IgG levels and MS may be partly due to overlapping HLA associations. Additionally, the increasing MS risk with increasing anti-EBNA-1 levels would be consistent with a pathogenic role of the EBNA-1 immune response, perhaps through molecular mimicry. Given that high anti-EBNA-1 antibodies may reflect a poorly controlled T-cell defense against the virus, our findings would be consistent with DRB1*15:01 being a poor class II antigen in the immune defense against EBV. Lastly, the difference in genetic control of IM supports the independent roles of EBNA-1 and IM in MS susceptibility.

2.
BMC Bioinformatics ; 23(1): 546, 2022 Dec 17.
Artículo en Inglés | MEDLINE | ID: mdl-36526955

RESUMEN

BACKGROUND: The human protein atlas (HPA) is an online database containing large sets of protein expression data in normal and cancerous tissues in image form from immunohistochemically (IHC) stained tissue microarrays. In these, the tissue architecture is preserved and thus provides information on the spatial distribution and localization of protein expression at the cellular and extracellular levels. The database is freely available online through the HPA website but currently without support for large-scale screening and analysis of the images in the database. Features like spatial information are typically lacking in gene expression datasets from homogenized tissues or single-cell analysis. To enable high throughput analysis of the HPA database, we developed the AtlasGrabber software. It is available freely under an open-source license. Based on a predefined gene list, the software fetches the images from the database and displays them for the user. Several filters for specific antibodies or images enable the user to customize her/his image analysis. Up to four images can be displayed simultaneously, which allows for the comparison of protein expression between different tissues and between normal and cancerous tissues. An additional feature is the XML parser that allows the extraction of a list of available antibodies, images, and genes for specific tissues or cancer types from the HPA's database file. RESULTS: Compared to existing software designed for a similar purpose, ours provide more functionality and is easier to use. To demonstrate the software's usability, we identified six new markers of basal cells of the prostate. A comparison to prostate cancer showed that five of them are absent in prostate cancer. CONCLUSIONS: The HPA is a uniquely valuable database. By facilitating its usefulness with the AtlasGrabber, we enable researchers to exploit its full capacity. The loss of basal cell markers is diagnostic for prostate cancer and can help refine the histopathological diagnosis of prostate cancer. As proof of concept, with the AtlasGrabber we identified five new potential biomarkers specific for prostate basal cells which are lost in prostate cancer and thus can be used for prostate cancer diagnostics.


Asunto(s)
Neoplasias de la Próstata , Programas Informáticos , Humanos , Masculino , Inmunohistoquímica , Bases de Datos de Proteínas , Proteómica/métodos , Neoplasias de la Próstata/genética
3.
Proc Natl Acad Sci U S A ; 116(34): 16955-16960, 2019 08 20.
Artículo en Inglés | MEDLINE | ID: mdl-31375628

RESUMEN

Multiple sclerosis (MS) is a chronic inflammatory, likely autoimmune disease of the central nervous system with a combination of genetic and environmental risk factors, among which Epstein-Barr virus (EBV) infection is a strong suspect. We have previously identified increased autoantibody levels toward the chloride-channel protein Anoctamin 2 (ANO2) in MS. Here, IgG antibody reactivity toward ANO2 and EBV nuclear antigen 1 (EBNA1) was measured using bead-based multiplex serology in plasma samples from 8,746 MS cases and 7,228 controls. We detected increased anti-ANO2 antibody levels in MS (P = 3.5 × 10-36) with 14.6% of cases and 7.8% of controls being ANO2 seropositive (odds ratio [OR] = 1.6; 95% confidence intervals [95%CI]: 1.5 to 1.8). The MS risk increase in ANO2-seropositive individuals was dramatic when also exposed to 3 known risk factors for MS: HLA-DRB1*15:01 carriage, absence of HLA-A*02:01, and high anti-EBNA1 antibody levels (OR = 24.9; 95%CI: 17.9 to 34.8). Reciprocal blocking experiments with ANO2 and EBNA1 peptides demonstrated antibody cross-reactivity, mapping to ANO2 [aa 140 to 149] and EBNA1 [aa 431 to 440]. HLA gene region was associated with anti-ANO2 antibody levels and HLA-DRB1*04:01 haplotype was negatively associated with ANO2 seropositivity (OR = 0.6; 95%CI: 0.5 to 0.7). Anti-ANO2 antibody levels were not increased in patients from 3 other inflammatory disease cohorts. The HLA influence and the fact that specific IgG production usually needs T cell help provides indirect evidence for a T cell ANO2 autoreactivity in MS. We propose a hypothesis where immune reactivity toward EBNA1 through molecular mimicry with ANO2 contributes to the etiopathogenesis of MS.


Asunto(s)
Anoctaminas , Antígenos Nucleares del Virus de Epstein-Barr , Herpesvirus Humano 4 , Modelos Inmunológicos , Imitación Molecular , Esclerosis Múltiple , Anoctaminas/genética , Anoctaminas/inmunología , Autoanticuerpos/inmunología , Reacciones Cruzadas/genética , Antígenos Nucleares del Virus de Epstein-Barr/genética , Antígenos Nucleares del Virus de Epstein-Barr/inmunología , Femenino , Antígeno HLA-A2/inmunología , Cadenas HLA-DRB1/genética , Cadenas HLA-DRB1/inmunología , Haplotipos , Herpesvirus Humano 4/genética , Herpesvirus Humano 4/inmunología , Humanos , Inmunoglobulina G/inmunología , Masculino , Esclerosis Múltiple/genética , Esclerosis Múltiple/inmunología , Esclerosis Múltiple/patología , Factores de Riesgo
4.
Cancer ; 127(15): 2724-2735, 2021 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-33823062

RESUMEN

BACKGROUND: The potential role of occupational exposures in the development of nasopharyngeal carcinoma (NPC) remains unclear, particularly in high-incidence areas. METHODS: The authors conducted a population-based case-control study, consisting of 2514 incident NPC cases and 2586 randomly selected population controls, in southern China from 2010 to 2014. Occupational history and other covariates were self-reported using a questionnaire. Multivariate logistic regression was used to estimate odds ratios (ORs) with 95% confidence intervals (CIs) for the risk of NPC associated with occupational exposures. Restricted cubic splines were used to evaluate potentially nonlinear duration-response relations. RESULTS: Individuals who had exposure to occupational dusts (OR, 1.45; 95% CI, 1.26-1.68), chemical vapors (OR, 1.37; 95% CI, 1.17-1.61), exhausts/smokes (OR, 1.42; 95% CI, 1.25-1.60), or acids/alkalis (OR, 1.56; 95% CI, 1.30-1.89) in the workplace had an increased NPC risk compared with those who were unexposed. Risk estimates for all 4 categories of occupational exposures appeared to linearly increase with increasing duration. Within these categories, occupational exposure to 14 subtypes of agents conferred significantly higher risks of NPC, with ORs ranging from 1.30 to 2.29, including dust from metals, textiles, cement, or coal; vapor from formaldehyde, organic solvents, or dyes; exhaust or smoke from diesel, firewood, asphalt/tar, vehicles, or welding; and sulfuric acid, hydrochloric acid, nitric acid, and concentrated alkali/ammonia. CONCLUSIONS: Occupational exposures to dusts, chemical vapors, exhausts/smokes, or acids/alkalis are associated with an excess risk of NPC. If the current results are causal, then the amelioration of workplace conditions might alleviate the burden of NPC in endemic areas. LAY SUMMARY: The role of occupational exposures in the development of nasopharyngeal carcinoma (NPC) remains unclear, particularly in high-incidence areas. The authors conducted a population-based study with 2514 incident NPC cases and 2586 population controls in southern China and observed that occupational exposures were associated with an increased risk of NPC. Duration-response trends were observed with increasing duration of exposure. These findings provide new evidence supporting an etiologic role of occupational exposures for NPC in a high-incidence region.


Asunto(s)
Neoplasias Nasofaríngeas , Exposición Profesional , Estudios de Casos y Controles , Humanos , Carcinoma Nasofaríngeo/epidemiología , Neoplasias Nasofaríngeas/epidemiología , Neoplasias Nasofaríngeas/etiología , Exposición Profesional/efectos adversos , Factores de Riesgo
5.
Cancer ; 125(24): 4462-4470, 2019 12 15.
Artículo en Inglés | MEDLINE | ID: mdl-31544233

RESUMEN

BACKGROUND: An association between a nonmedicinal herbal diet and nasopharyngeal carcinoma (NPC) has often been hypothesized but never thoroughly investigated. METHODS: This study enrolled a total of 2469 patients with incident NPC and 2559 population controls from parts of Guangdong and Guangxi Provinces in southern China between 2010 and 2014. Questionnaire information was collected on the intake of traditional herbal tea and herbal soup as well as the specific herbal plants used in soups and other potentially confounding lifestyle factors. Multivariate logistic regression models were used to estimate odds ratios (ORs) with 95% confidence intervals (CIs) for the NPC risk in association with herbal tea and soup intake. RESULTS: Ever consumption of herbal tea was not associated with NPC risk (OR, 1.03; 95% CI, 0.91-1.17). An inverse association was observed for NPC among ever drinkers of herbal soup (OR, 0.78; 95% CI, 0.67-0.90) but without any monotonic trend with an increasing frequency or duration of herbal soup consumption. Inverse associations with NPC risk were detected with 9 herbal plants used in herbal soup, including Ziziphus jujuba, Fructus lycii, Codonopsis pilosula, Astragalus membranaceus, Semen coicis, Smilax glabra, Phaseolus calcaratus, Morinda officinalis, and Atractylodes macrocephala (OR range, 0.31-0.79). CONCLUSIONS: Consuming herbal soups including specific plants, but not herbal tea, was inversely associated with NPC. If replicated, these results might provide potential for NPC prevention in endemic areas.


Asunto(s)
Dieta , Carcinoma Nasofaríngeo/epidemiología , Carcinoma Nasofaríngeo/etiología , Adulto , Anciano , Estudios de Casos y Controles , Susceptibilidad a Enfermedades , Femenino , Humanos , Masculino , Persona de Mediana Edad , Oportunidad Relativa , Vigilancia de la Población , Factores de Riesgo , Adulto Joven
6.
J Nutr ; 149(9): 1596-1605, 2019 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-31127847

RESUMEN

BACKGROUND: Chinese-style salted fish intake in early life is considered an established risk factor for nasopharyngeal carcinoma (NPC). However, results for adult intakes of salted fish and preserved foods are inconsistent. OBJECTIVE: The aim of this study was to ascertain the relations of Chinese-style hard and soft salted fish and preserved food intakes with NPC risk. METHODS: We conducted a population-based case-control study in southern China with 2554 NPC cases identified through a rapid case ascertainment system and 2648 healthy controls, frequency-matched on age, sex, and area. Subjects (aged 20-74 y) were interviewed via a food-frequency questionnaire, including information on portion size. Data were also collected on alcohol consumption and potential confounders. Food intake was grouped into 3-5 energy-adjusted intake levels during adulthood (10 y prior) and adolescence (16-18 y). For childhood (at age 10 y), intake frequency of selected food items was collected. Multivariate-adjusted ORs with 95% CIs were estimated via logistic regression. RESULTS: We found no association between NPC and intake of hard Chinese-style salted fish during adulthood, and an increased risk at the highest level of intake during adolescence (OR: 1.19; 95% CI: 1.03, 1.39). In contrast, we found a decreased risk for the middle intake level of soft salted fish during adulthood (OR: 0.68; 95% CI: 0.57, 0.81) and adolescence (OR: 0.71; 95% CI: 0.59, 0.85). Preserved foods showed contrasting risk profiles, e.g., the highest adult intake level of salted egg (OR: 1.51; 95% CI: 1.22, 1.87) and fermented black beans (OR: 0.67; 95% CI: 0.56, 0.80). Associations with NPC were weaker than previously reported, e.g., for weekly childhood intake of salted fish (OR: 1.56; 95% CI: 1.24, 1.97). CONCLUSIONS: Hard and soft salted fish have different risk profiles. Salted fish and other preserved foods were at most weak risk factors for NPC in all periods and may play a smaller role in NPC occurrence than previously thought.


Asunto(s)
Productos Pesqueros/efectos adversos , Alimentos en Conserva/efectos adversos , Carcinoma Nasofaríngeo/etiología , Neoplasias Nasofaríngeas/etiología , Cloruro de Sodio Dietético/efectos adversos , Adolescente , Adulto , Anciano , Animales , Estudios de Casos y Controles , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Riesgo
7.
Proc Natl Acad Sci U S A ; 113(10): 2672-7, 2016 Mar 08.
Artículo en Inglés | MEDLINE | ID: mdl-26929366

RESUMEN

The observed intercellular heterogeneity within a clonal cell population can be mapped as dynamical states clustered around an attractor point in gene expression space, owing to a balance between homeostatic forces and stochastic fluctuations. These dynamics have led to the cancer cell attractor conceptual model, with implications for both carcinogenesis and new therapeutic concepts. Immortalized and malignant EBV-carrying B-cell lines were used to explore this model and characterize the detailed structure of cell attractors. Any subpopulation selected from a population of cells repopulated the whole original basin of attraction within days to weeks. Cells at the basin edges were unstable and prone to apoptosis. Cells continuously changed states within their own attractor, thus driving the repopulation, as shown by fluorescent dye tracing. Perturbations of key regulatory genes induced a jump to a nearby attractor. Using the Fokker-Planck equation, this cell population behavior could be described as two virtual, opposing influences on the cells: one attracting toward the center and the other promoting diffusion in state space (noise). Transcriptome analysis suggests that these forces result from high-dimensional dynamics of the gene regulatory network. We propose that they can be generalized to all cancer cell populations and represent intrinsic behaviors of tumors, offering a previously unidentified characteristic for studying cancer.


Asunto(s)
Algoritmos , Perfilación de la Expresión Génica/métodos , Molécula 1 de Adhesión Intercelular/genética , Modelos Genéticos , Neprilisina/genética , Receptores de IgE/genética , Apoptosis/genética , Linfocitos B/metabolismo , Línea Celular Transformada , Proliferación Celular/genética , Citometría de Flujo , Humanos , Molécula 1 de Adhesión Intercelular/metabolismo , Cinética , Neoplasias/genética , Neoplasias/metabolismo , Neoplasias/patología , Neprilisina/metabolismo , Proteínas de Transporte de Catión Orgánico/genética , Proteínas de Transporte de Catión Orgánico/metabolismo , Transportador 2 de Cátion Orgánico , Interferencia de ARN , Receptores de IgE/metabolismo , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Factores de Tiempo
8.
Am J Epidemiol ; 187(10): 2117-2125, 2018 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-29701753

RESUMEN

Because persistent inflammation may render the nasopharyngeal mucosa susceptible to carcinogenesis, chronic ear-nose-throat (ENT) disease and its treatment might influence the risk of nasopharyngeal carcinoma (NPC). Existing evidence is, however, inconclusive and often based on methodologically suboptimal epidemiologic studies. In a population-based case-control study in southern China, we enrolled 2,532 persons with NPC and 2,597 controls, aged 20-74 years, from 2010 to 2014. Odds ratios were estimated for associations between NPC risk and history of ENT and related medications. Any history of chronic ENT disease was associated with a 34% increased risk of NPC. Similarly, use of nasal drops or aspirin was associated with approximately doubled risk of NPC. However, in secondary analyses restricted to chronic ENT diseases and related medication use at least 5 years prior to diagnosis/interview, most results were statistically nonsignificant, except a history of uncured ENT diseases, untreated nasal polyps, and earlier age at first diagnosis of ENT disease and first or most recent aspirin use. Overall, these findings suggest that ENT disease and related medication use are most likely early indications rather than causes of NPC, although the possibility of a modestly increased NPC risk associated with these diseases and related medications cannot be excluded.


Asunto(s)
Carcinoma Nasofaríngeo/epidemiología , Neoplasias Nasofaríngeas/epidemiología , Enfermedades Otorrinolaringológicas/complicaciones , Adulto , Anciano , Aspirina/efectos adversos , Estudios de Casos y Controles , China/epidemiología , Enfermedad Crónica , Femenino , Humanos , Modelos Logísticos , Masculino , Medicina Tradicional China/efectos adversos , Persona de Mediana Edad , Análisis Multivariante , Carcinoma Nasofaríngeo/etiología , Neoplasias Nasofaríngeas/etiología , Oportunidad Relativa , Enfermedades Otorrinolaringológicas/tratamiento farmacológico , Factores de Riesgo , Adulto Joven
9.
Nature ; 542(7641): 296, 2017 02 15.
Artículo en Inglés | MEDLINE | ID: mdl-28202974
10.
Immunology ; 152(4): 562-573, 2017 12.
Artículo en Inglés | MEDLINE | ID: mdl-28699226

RESUMEN

Diffuse large B-cell lymphoma (DLBCL), the most common type of malignant lymphoma, accounts for 30% of adult non-Hodgkin lymphomas. Epstein-Barr virus (EBV) -positive DLBCL of the elderly is a newly recognized subtype that accounts for 8-10% of DLBCLs in Asian countries, but is less common in Western populations. Five DLBCL-derived cell lines were employed to characterize patterns of EBV latent gene expression, as well as response to cytokines and chemotaxis. Interleukin-4 and interleukin-21 modified LMP1, EBNA1 and EBNA2 expression depending on cell phenotype and type of EBV latent programme (type I, II or III). These cytokines also affected CXCR4- or CCR7-mediated chemotaxis in two of the cell lines, Farage (type III) and Val (type II). Further, we investigated the effect of EBV by using dominant-negative EBV nuclear antigen 1(dnEBNA1) to eliminate EBV genomes. This resulted in decreased chemotaxis. By employing an alternative way to eliminate EBV genomes, Roscovitine, we show an increase of apoptosis in the EBV-positive lines. These results show that EBV plays an important role in EBV-positive DLBCL lines with regard to survival and chemotactic response. Our findings provide evidence for the impact of microenvironment on EBV-carrying DLBCL cells and might have therapeutic implications.


Asunto(s)
Quimiotaxis/inmunología , Citocinas/inmunología , Infecciones por Virus de Epstein-Barr/inmunología , Herpesvirus Humano 4/inmunología , Linfoma de Células B Grandes Difuso/inmunología , Proteínas de Neoplasias/inmunología , Microambiente Tumoral/inmunología , Línea Celular Tumoral , Supervivencia Celular/genética , Supervivencia Celular/inmunología , Quimiotaxis/genética , Citocinas/genética , Infecciones por Virus de Epstein-Barr/genética , Herpesvirus Humano 4/genética , Humanos , Linfoma de Células B Grandes Difuso/genética , Linfoma de Células B Grandes Difuso/virología , Proteínas de Neoplasias/genética , Receptores CCR7/genética , Receptores CCR7/inmunología , Receptores CXCR4/genética , Receptores CXCR4/inmunología , Microambiente Tumoral/genética
11.
Am J Epidemiol ; 185(12): 1272-1280, 2017 06 15.
Artículo en Inglés | MEDLINE | ID: mdl-28459936

RESUMEN

The magnitude and patterns of associations between smoking and risk of nasopharyngeal carcinoma (NPC) in high-incidence regions remain uncertain. Associations with active and passive tobacco smoking were estimated using multivariate logistic regression in a population-based case-control study of 2,530 NPC cases and 2,595 controls in Guangdong and Guangxi, southern China, in 2010-2014. Among men, risk of NPC was significantly higher in current smokers compared with never smokers (odds ratio (OR) = 1.32, 95% confidence interval (CI): 1.14, 1.53) but not in former smokers (OR = 0.92, 95% CI: 0.73, 1.17). Risk increased with smoking intensity (per 10 cigarettes/day, OR = 1.09, 95% CI: 1.03, 1.16), smoking duration (per 10 years, OR = 1.11, 95% CI: 1.06, 1.16), and cumulative smoking (per 10 pack-years, OR = 1.08, 95% CI: 1.04, 1.12). Risk decreased with later age at smoking initiation (per year, OR = 0.97, 95% CI: 0.96, 0.98) but not greater time since smoking cessation. Exposures to passive smoking during childhood (OR = 1.24, 95% CI: 1.03, 1.48) and from a spouse during adulthood (OR = 1.30, 95% CI: 1.03, 1.63) were independently associated with increased NPC risk in never-smoking men and women, but exposure-response trends were not observed. In conclusion, active and passive tobacco smoking are associated with modestly increased risk of NPC in southern China; risk is highest among long-term smokers.


Asunto(s)
Carcinoma/etiología , Neoplasias Nasofaríngeas/etiología , Fumar/efectos adversos , Contaminación por Humo de Tabaco/efectos adversos , Adulto , Anciano , Carcinoma/epidemiología , Estudios de Casos y Controles , China/epidemiología , Femenino , Humanos , Incidencia , Modelos Logísticos , Masculino , Persona de Mediana Edad , Análisis Multivariante , Carcinoma Nasofaríngeo , Neoplasias Nasofaríngeas/epidemiología , Oportunidad Relativa , Factores de Riesgo , Factores de Tiempo , Adulto Joven
12.
Cancer ; 123(14): 2716-2725, 2017 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-28241094

RESUMEN

BACKGROUND: To the authors' knowledge, no studies to date have explored familial risks of nasopharyngeal carcinoma (NPC) in detail and quantified its lifetime risk in high-incidence populations. METHODS: The authors conducted a population-based case-control study of 2499 NPC cases and 2576 controls randomly selected in southern China from 2010 through 2014. Unconditional logistic regression was used to estimate multivariable-adjusted odds ratios (ORs) with 95% confidence intervals (95% CIs) associated with a family history of NPC. In addition, the authors compiled a reconstructed cohort comprising 40,781 first-degree relatives of cases and controls to calculate the lifetime cumulative risk of NPC. RESULTS: Individuals with a first-degree family history of NPC were found to be at a >4-fold risk of NPC (OR, 4.6; 95% CI, 3.5-6.1) compared with those without such a history, but had no excess risk of other malignancies. The excess risk was higher for a maternal than a paternal history and was slightly stronger for a sibling compared with a parental history, and for a sororal than a fraternal history. Among relatives of cases, the cumulative risk of NPC up to age 74 years was 3.7% (95% CI, 3.3%-4.2%), whereas that among relatives of controls was 0.9% (95% CI, 0.7%-1.2%). Cumulative risk was higher in siblings than in parents among relatives of cases, whereas no such difference was noted among relatives of controls. CONCLUSIONS: Individuals with a family history of NPC have a substantially higher risk of NPC. These relative and cumulative risk estimates can guide the development of strategies for early detection and clinical consultation in populations with a high incidence of NPC. Cancer 2017;123:2716-25. © 2017 American Cancer Society.


Asunto(s)
Carcinoma/epidemiología , Neoplasias Nasofaríngeas/epidemiología , Adulto , Anciano , Carcinoma/genética , Estudios de Casos y Controles , China/epidemiología , Estudios de Cohortes , Femenino , Predisposición Genética a la Enfermedad , Humanos , Incidencia , Modelos Logísticos , Masculino , Anamnesis , Persona de Mediana Edad , Análisis Multivariante , Carcinoma Nasofaríngeo , Neoplasias Nasofaríngeas/genética , Oportunidad Relativa , Medición de Riesgo , Factores de Riesgo , Factores Sexuales , Adulto Joven
13.
Microb Ecol Health Dis ; 28(1): 1345574, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28959177

RESUMEN

Background: Permafrost preserves a variety of viable ancient microorganisms. Some of them can be cultivated after being kept at subzero temperatures for thousands or even millions of years. Objective: To cultivate bacterial strains from permafrost. Design: We isolated and cultivated two bacterial strains from permafrost that was obtained at Mammoth Mountain in Siberia and attributed to the Middle Miocene. Bacterial genomic DNA was sequenced with 40-60× coverage and high-quality contigs were assembled. The first strain was assigned to Staphylococcus warneri species (designated MMP1) and the second one to Staphylococcus hominis species (designated MMP2), based on the classification of 16S ribosomal RNA genes and genomic sequences. Results: Genomic sequence analysis revealed the close relation of the isolated ancient bacteria to the modern bacteria of this species. Moreover, several genes associated with resistance to different groups of antibiotics were found in the S. hominis MMP2 genome. Conclusions: These findings supports a hypothesis that antibiotic resistance has an ancient origin. The enrichment of cultivated bacterial communities with ancient permafrost strains is essential for the analysis of bacterial evolution and antibiotic resistance.

14.
BMC Immunol ; 15: 25, 2014 Jun 19.
Artículo en Inglés | MEDLINE | ID: mdl-24946690

RESUMEN

BACKGROUND: Interleukin 7 (IL-7) signals via the IL-7 receptor (IL-7R) and drives homeostatic T-cell proliferation in patients after allogeneic hematopoietic stem cell transplantation (aHSCT). PURPOSE: We performed a prospective study in adults (n = 33) and children (n = 29) undergoing aHSCT measuring plasma IL-7 and soluble IL-7R (sIL-7R) concentrations between 1 and 12 months after HSCT in order to investigate the link between sIL-7R and clinical events after aHSCT. RESULTS: sIL-7R, but not IL-7, increased with time after HSCT in plasma from all patients enrolled in the study. sIL-7R values were higher at 2, 3, and 6 months (p < 0.01) if the donor was a sibling as compared to an unrelated donor. Increased sIL-7R levels were also identified in plasma from patients who were not treated with anti-thymocyte globulin (ATG). Low sIL-7R was associated with any grade of acute graft-versus-host disease (GVHD) at 2 and 6 months (p = 0.02) and with a positive CMV PCR at 2 months after HSCT (p < 0.05). Patients with cytomegalovirus (CMV) reactivation had increased IL-7 values at 2 and 3 months (p = 0.02) after HSCT. In multivariate analysis, lower sIL-7R levels were associated with acute GVHD (relative hazard (RH): 0.70, p > 0.01) and sibling donors (RH: 2.23, p = 0.004). Recipients of sibling grafts showed high levels of IL-7 (RH: 1.38, p < 0.05) and bone marrow recipients had low IL-7 levels (RH: 0.73, p = 0.04). CONCLUSIONS: Measurement of the sIL-7R/IL-7 axis will help in guided immune monitoring after HSCT and guided interference with sIL-7R may be explored in GVHD management.


Asunto(s)
Enfermedad Injerto contra Huésped/sangre , Enfermedad Injerto contra Huésped/inmunología , Receptores de Interleucina-7/sangre , Adolescente , Adulto , Anciano , Niño , Preescolar , Femenino , Enfermedad Injerto contra Huésped/prevención & control , Trasplante de Células Madre Hematopoyéticas/efectos adversos , Humanos , Lactante , Recién Nacido , Interleucina-7/sangre , Masculino , Persona de Mediana Edad , Factores de Riesgo , Donantes de Tejidos , Adulto Joven
15.
J Pers Med ; 14(6)2024 May 24.
Artículo en Inglés | MEDLINE | ID: mdl-38929782

RESUMEN

The shift towards personalized cancer medicine (PCM) represents a significant transformation in cancer care, emphasizing tailored treatments based on the genetic understanding of cancer at the cellular level. This review draws on recent literature to explore key factors influencing PCM implementation, highlighting the role of innovative leadership, interdisciplinary collaboration, and coordinated funding and regulatory strategies. Success in PCM relies on overcoming challenges such as integrating diverse medical disciplines, securing sustainable investment for shared infrastructures, and navigating complex regulatory landscapes. Effective leadership is crucial for fostering a culture of innovation and teamwork, essential for translating complex biological insights into personalized treatment strategies. The transition to PCM necessitates not only organizational adaptation but also the development of new professional roles and training programs, underscoring the need for a multidisciplinary approach and the importance of team science in overcoming the limitations of traditional medical paradigms. The conclusion underscores that PCM's success hinges on creating collaborative environments that support innovation, adaptability, and shared vision among all stakeholders involved in cancer care.

16.
Genome Biol ; 25(1): 104, 2024 04 19.
Artículo en Inglés | MEDLINE | ID: mdl-38641842

RESUMEN

Single-cell sequencing datasets are key in biology and medicine for unraveling insights into heterogeneous cell populations with unprecedented resolution. Here, we construct a single-cell multi-omics map of human tissues through in-depth characterizations of datasets from five single-cell omics, spatial transcriptomics, and two bulk omics across 125 healthy adult and fetal tissues. We construct its complement web-based platform, the Single Cell Atlas (SCA, www.singlecellatlas.org ), to enable vast interactive data exploration of deep multi-omics signatures across human fetal and adult tissues. The atlas resources and database queries aspire to serve as a one-stop, comprehensive, and time-effective resource for various omics studies.


Asunto(s)
Ascomicetos , Multiómica , Adulto , Humanos , Bases de Datos Factuales , Feto , Perfilación de la Expresión Génica
17.
Cell Genom ; 4(2): 100474, 2024 Feb 14.
Artículo en Inglés | MEDLINE | ID: mdl-38359790

RESUMEN

Epstein-Barr virus (EBV) and human leukocyte antigen (HLA) polymorphisms are well-known risk factors for nasopharyngeal carcinoma (NPC). However, the combined effects between HLA and EBV on the risk of NPC are unknown. We applied a causal inference framework to disentangle interaction and mediation effects between two host HLA SNPs, rs2860580 and rs2894207, and EBV variant 163364 with a population-based case-control study in NPC-endemic southern China. We discovered the strong interaction effects between the high-risk EBV subtype and both HLA SNPs on NPC risk (rs2860580, relative excess risk due to interaction [RERI] = 4.08, 95% confidence interval [CI] = 2.03-6.14; rs2894207, RERI = 3.37, 95% CI = 1.59-5.15), accounting for the majority of genetic risk effects. These results indicate that HLA genes and the high-risk EBV have joint effects on NPC risk. Prevention strategies targeting the high-risk EBV subtype would largely reduce NPC risk associated with EBV and host genetic susceptibility.


Asunto(s)
Infecciones por Virus de Epstein-Barr , Neoplasias Nasofaríngeas , Humanos , Carcinoma Nasofaríngeo/genética , Herpesvirus Humano 4/genética , Infecciones por Virus de Epstein-Barr/genética , Neoplasias Nasofaríngeas/epidemiología , Estudios de Casos y Controles , Polimorfismo de Nucleótido Simple/genética
18.
Mol Oncol ; 18(2): 245-279, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38135904

RESUMEN

Analyses of inequalities related to prevention and cancer therapeutics/care show disparities between countries with different economic standing, and within countries with high Gross Domestic Product. The development of basic technological and biological research provides clinical and prevention opportunities that make their implementation into healthcare systems more complex, mainly due to the growth of Personalized/Precision Cancer Medicine (PCM). Initiatives like the USA-Cancer Moonshot and the EU-Mission on Cancer and Europe's Beating Cancer Plan are initiated to boost cancer prevention and therapeutics/care innovation and to mitigate present inequalities. The conference organized by the Pontifical Academy of Sciences in collaboration with the European Academy of Cancer Sciences discussed the inequality problem, dependent on the economic status of a country, the increasing demands for infrastructure supportive of innovative research and its implementation in healthcare and prevention programs. Establishing translational research defined as a coherent cancer research continuum is still a challenge. Research has to cover the entire continuum from basic to outcomes research for clinical and prevention modalities. Comprehensive Cancer Centres (CCCs) are of critical importance for integrating research innovations to preclinical and clinical research, as for ensuring state-of-the-art patient care within healthcare systems. International collaborative networks between CCCs are necessary to reach the critical mass of infrastructures and patients for PCM research, and for introducing prevention modalities and new treatments effectively. Outcomes and health economics research are required to assess the cost-effectiveness of new interventions, currently a missing element in the research portfolio. Data sharing and critical mass are essential for innovative research to develop PCM. Despite advances in cancer research, cancer incidence and prevalence is growing. Making cancer research infrastructures accessible for all patients, considering the increasing inequalities, requires science policy actions incentivizing research aimed at prevention and cancer therapeutics/care with an increased focus on patients' needs and cost-effective healthcare.


Asunto(s)
Neoplasias , Humanos , Ciudad del Vaticano , Neoplasias/prevención & control , Investigación Biomédica Traslacional , Atención a la Salud , Medicina de Precisión
19.
Cancer Discov ; 14(7): 1147-1153, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38870393

RESUMEN

Cancer Core Europe brings together the expertise, resources, and interests of seven leading cancer institutes committed to leveraging collective innovation and collaboration in precision oncology. Through targeted efforts addressing key medical challenges in cancer and partnerships with multiple stakeholders, the consortium seeks to advance cancer research and enhance equitable patient care.


Asunto(s)
Oncología Médica , Neoplasias , Humanos , Europa (Continente) , Oncología Médica/organización & administración , Oncología Médica/métodos , Neoplasias/terapia , Investigación Biomédica/organización & administración , Medicina de Precisión/métodos
20.
Int J Cancer ; 133(3): 766-70, 2013 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-23364893

RESUMEN

Previously, interleukin (IL)-21 has been found to induce apoptosis by activating the signal transducer and activator of transcription 3 (STAT3) and concomitant upregulation of c-Myc in diffuse large B-cell lymphoma (DLBCL) lines with unknown Epstein-Barr virus (EBV) status. Here, as a first approach toward the characterization of the role of EBV in DLCBL, the EBV gene expression and the IL-21 sensitivity of the EBV-positive DLBCL line, Farage, have been examined. It was found that, surprisingly, despite c-Myc upregulation, IL-21 induced cell proliferation rather than apoptosis in Farage. Expression of a dominant-negative EBNA1 mutant and the consecutive downregulation of EBV gene expression antagonized the IL-21-induced proliferation of Farage and increased apoptosis. These findings reveal a previously unknown role of EBV in DLBCL that is of possible relevance for the current attempt to use IL-21 in therapy.


Asunto(s)
Apoptosis , Antígenos Nucleares del Virus de Epstein-Barr/metabolismo , Herpesvirus Humano 4/fisiología , Interleucinas/farmacología , Linfoma de Células B Grandes Difuso/patología , Linfoma de Células B Grandes Difuso/virología , Línea Celular Tumoral , Proliferación Celular , Herpesvirus Humano 4/genética , Humanos , Interleucinas/metabolismo , Linfoma de Células B Grandes Difuso/tratamiento farmacológico , Linfoma de Células B Grandes Difuso/metabolismo , Proteínas Proto-Oncogénicas c-myc/metabolismo , Factor de Transcripción STAT3/metabolismo
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