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1.
Immunity ; 40(5): 785-800, 2014 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-24816404

RESUMEN

Development of cancer has been linked to chronic inflammation, particularly via interleukin-23 (IL-23) and IL-17 signaling pathways. However, the cellular source of IL-17 and underlying mechanisms by which IL-17-producing cells promote human colorectal cancer (CRC) remain poorly defined. Here, we demonstrate that innate γδT (γδT17) cells are the major cellular source of IL-17 in human CRC. Microbial products elicited by tumorous epithelial barrier disruption correlated with inflammatory dendritic cell (inf-DC) accumulation and γδT17 polarization in human tumors. Activated inf-DCs induced γδT17 cells to secrete IL-8, tumor necrosis factor alpha, and GM-CSF with a concomitant accumulation of immunosuppressive PMN-MDSCs in the tumor. Importantly, γδT17 cell infiltration positively correlated with tumor stages and other clinicopathological features. Our study uncovers an inf-DC-γδT17-PMN-MDSC regulatory axis in human CRC that correlates MDSC-meditated immunosuppression with tumor-elicited inflammation. These findings suggest that γδT17 cells might be key players in human CRC progression and have the potential for treatment or prognosis prediction.


Asunto(s)
Neoplasias Colorrectales/inmunología , Interleucina-17/inmunología , Receptores de Antígenos de Linfocitos T gamma-delta/inmunología , Células Th17/inmunología , Proliferación Celular , Células Dendríticas/inmunología , Factor Estimulante de Colonias de Granulocitos y Macrófagos/metabolismo , Humanos , Inflamación/inmunología , Interleucina-8/metabolismo , Activación de Linfocitos/inmunología , Células Mieloides/inmunología , Factor de Necrosis Tumoral alfa/metabolismo
2.
Biomacromolecules ; 23(10): 4327-4338, 2022 Oct 10.
Artículo en Inglés | MEDLINE | ID: mdl-36069679

RESUMEN

As the utilization of degradable polymer coatings increased, the accompanying trade-off between good degradability and high-efficiency antidiatom adhesion due to their hydrophobic nature remains unresolved. The study presents a new hydrophobic surface-fragmenting coating consisting of degradable hyperbranched polymers (hereafter denoted as h-LLAx) synthesized by reversible complexation-mediated copolymerization with isobornyl acrylate (IBOA) and divinyl-functional oligomeric poly(l-lactide) (OLLA-V2), both derived from biomass, that exhibited superior resistance (∼0 cell mm-2) to marine diatom Navicula incerta (N. incerta) attachment with higher OLLA content. The combined impact of the microscale hollow semisphere micelles that self-assembled degradable hyperbranched copolymers and hydrolysis-driven self-renewable surfaces following immersion in seawater may account for the remarkable resistance of h-LLAx coatings against N. incerta. Detailed investigations were conducted across multiple perspectives, from hydrolytic degradation to broad-spectrum antibacterial attachment to ecotoxicity assessment. The excellent features of high resistance to marine diatoms and bacterial attachment, degradability, and environmental friendliness make the as-prepared h-LLAx coatings widely sought after for antifouling coating applications.


Asunto(s)
Incrustaciones Biológicas , Diatomeas , Antibacterianos , Micelas , Polímeros/química , Polímeros/farmacología , Propiedades de Superficie
3.
BMC Cancer ; 20(1): 454, 2020 May 20.
Artículo en Inglés | MEDLINE | ID: mdl-32434481

RESUMEN

BACKGROUND: Activated eosinophils have been deemed to affect carcinogenesis and tumor progression via various mechanisms in tumor microenvironment. However, the prognostic role of tumor-associated tissue eosinophilia (TATE) in human cancers remains controversial. Therefore, we conducted this meta-analysis to better comprehend the association between TATE and clinical outcomes of patients. METHODS: We searched PubMed, Embase and EBSCO to determine the researches assessing the association between TATE and overall survival (OS) and/or disease-free survival (DFS) in patients with cancer, then combined relevant data into hazard ratios (HRs) or odds ratio (OR) for OS, DFS and clinicopathological features including lymph node metastasis etc. with STATA 12.0. RESULTS: Twenty six researches with 6384 patients were included in this meta-analysis. We found that the presence of TATE was significantly associated with improved OS, but not with DFS in all types of cancers. In stratified analyses based on cancer types, pooled results manifested that the infiltration of eosinophils was remarkably associated with better OS in esophageal carcinoma and colorectal cancer. In addition, TATE significantly inversely correlated with lymph node metastasis, tumor stage and lymphatic invasion of cancer. CONCLUSION: TATE promotes survival in cancer patients, suggesting that it is a valuable prognostic biomarker and clinical application of biological response modifiers or agonists promoting TATE may be the novel therapeutic strategy for patients.


Asunto(s)
Eosinofilia/inmunología , Neoplasias/fisiopatología , Microambiente Tumoral/inmunología , Eosinofilia/epidemiología , Eosinofilia/patología , Humanos , Pronóstico
4.
Int J Clin Oncol ; 25(10): 1747-1756, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32728865

RESUMEN

The efficacy of cellular immunotherapy plus chemotherapy in treatment of gastric cancer (GC) remains inconsistent even controversial. Hence, we performed a meta-analysis to better comprehend the clinical value of cellular immunotherapy plus chemotherapy for GC patients. We searched PubMed, Embase and EBSCO databases to identify the studies evaluating the association of cellular immunotherapy plus chemotherapy and overall survival (OS) and/or disease-free survival (DFS) in patients with GC, and then combined relevant data into hazard ratios (HRs) for OS, DFS and clinicopathological features such as TNM stage, etc. with STATA 12.0. Eleven studies with 1244 patients were included in this meta-analysis. We found that cellular immunotherapy plus chemotherapy remarkably improved overall survival (OS) and diseases-free survival (DFS) as compared to the chemotherapy for GC patients. In subgroup analyses, pooled data showed that the combined therapy was significantly associated with better 3-year and 5-year survival rate, but not with 1-year survival rate of patients; the application of cellular immunotherapy based on either CIK or DC-CIK cells could enhance survival as well as NK, γδT and CIK cells-based immunotherapy. More importantly, the addition of cellular immunotherapy considerably improved OS and DFS only in patients with stage III rather than stage II. In addition, we also discovered that the combined therapy did not cause intolerable side effects to patients. Cellular immunotherapy plus chemotherapy ameliorates survival in GC, especially in patients with stage III, implicating that it is a valuable therapeutic strategy for these patients.


Asunto(s)
Inmunoterapia/métodos , Neoplasias Gástricas/mortalidad , Neoplasias Gástricas/terapia , Antineoplásicos/uso terapéutico , Terapia Combinada , Células Asesinas Inducidas por Citocinas , Supervivencia sin Enfermedad , Humanos , Tasa de Supervivencia
5.
World J Urol ; 37(9): 1817-1825, 2019 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-30511210

RESUMEN

BACKGROUND: Systemic inflammatory response (SIR) plays important roles in initiation, promotion and progression of tumor. However, the prognostic role of preoperative circulating neutrophil-lymphocyte ratio (NLR) (known as a marker of SIR) in human primary bladder cancer (BC) undergoing radical cystectomy (RC) remains controversial. Hence, we performed this meta-analysis to better understand the role of preoperative circulating NLR in prognosis prediction for primary BC patients undergoing RC. METHODS: We searched PubMed, Embase and EBSCO to identify the studies and computed extracted data with STATA 12.0. RESULTS: A total of 11,945 patients with BC from 18 published studies were incorporated into this meta-analysis. We found that elevated NLR was significantly associated with decreased 3-year and 5-year overall survival (OS), 1-year, 3-year and 5-year recurrence-free survival (RFS), but not with 1-year or 10-year OS, or 10-year RFS in primary BC patients who underwent RC. The results also showed that neoadjuvant chemotherapy (NAC) had a significant impact on the negative prognostic effect of NLR. In addition, high NLR significantly correlated with unfavorable clinicopathological features of BC. CONCLUSION: Elevated preoperative circulating NLR leads to an unfavorable outcome in primary BC undergoing RC, especially in patients without NAC, implicating that it might be a valuable prognostic index for these patients.


Asunto(s)
Cistectomía , Linfocitos , Neutrófilos , Neoplasias de la Vejiga Urinaria/sangre , Neoplasias de la Vejiga Urinaria/cirugía , Cistectomía/métodos , Humanos , Recuento de Leucocitos , Periodo Preoperatorio , Pronóstico
6.
Int J Cancer ; 142(4): 813-821, 2018 02 15.
Artículo en Inglés | MEDLINE | ID: mdl-29023696

RESUMEN

The prognostic role of tumor-infiltrating tryptase+ mast cells in human solid tumors remains controversial. Herein, we conducted a meta-analysis including 28 published studies with 4224 patients identified from PubMed and EBSCO to assess the prognostic impact of tumor-infiltrating tryptase+ mast cells in human solid tumors. We found that tryptase+ mast cell infiltration significantly decreased overall survival (OS) and disease-free survival (DFS) in all types of solid tumors. In stratified analyses, tryptase+ mast cell infiltration was significantly associated with worse OS in non-small cell lung cancer, hepatocellular carcinoma and 5-year survival in colorectal cancer. And these cells were inversely associated with DFS in hepatocellular and colorectal cancer. In addition, high density of intratumoral tryptase+ mast cells significantly correlated with lymph node metastasis of solid tumor. In conclusion, Tryptase+ mast cell infiltration leads to an unfavorable clinical outcome in solid tumors, implicating that it is a valuable biomarker for prognostic prediction for human solid malignances and targeting it may have a potential for effective treatment.


Asunto(s)
Mastocitos/enzimología , Neoplasias/patología , Triptasas/metabolismo , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Mastocitos/patología , Neoplasias/enzimología , Neoplasias/mortalidad , Tasa de Supervivencia
7.
Cell Physiol Biochem ; 51(3): 1041-1050, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30476924

RESUMEN

BACKGROUND/AIMS: Tumor-infiltrating fibroblasts are a heterogeneous population, and different subpopulations play differential roles in tumor microenvironment. However, the prognostic role of podoplanin+ fibroblasts in human solid tumors still remains controversial. Therefore, we performed the meta-analysis to better understand the role of this subpopulation in prognosis prediction for patients with solid tumor. METHODS: We searched PubMed and EBSCO to identify the studies evaluating the association of intratumoral podoplanin+ fibroblast density detected by immunohistochemical method and overall survival (OS) and/or disease-free survival (DFS) in patients with solid tumor, then computed extracted data into hazard ratios for OS, DFS and clinicopathological features with STATA 12.0. RESULTS: A total of 4883 patients from 29 published studies were incorporated into this meta-analysis. We found that podoplanin+ fibroblast infiltration significantly decreased OS and DFS in all types of solid tumors. In stratified analyses, podoplanin+ fibroblast infiltration was significantly associated with worse OS in cholangiocarcinoma, breast, lung and pancreatic cancer. And these cells were inversely associated with DFS in breast, lung and pancreatic cancer. In addition, high density of these cells significantly correlated with unfavorable clinicopathological features such as lymph node metastasis, TNM stage, lymphatic and vascular invasion of solid tumor. CONCLUSION: Podoplanin+ fibroblast infiltration leads to worse clinical outcome in solid tumors, implicating that it is a valuable prognostic biomarker and targeting it may have a potential for effective treatment.


Asunto(s)
Fibroblastos Asociados al Cáncer/patología , Glicoproteínas de Membrana/análisis , Neoplasias/patología , Biomarcadores de Tumor/análisis , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/patología , Colangiocarcinoma/diagnóstico , Colangiocarcinoma/patología , Supervivencia sin Enfermedad , Femenino , Humanos , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/patología , Neoplasias/diagnóstico , Neoplasias Pancreáticas/diagnóstico , Neoplasias Pancreáticas/patología , Pronóstico , Microambiente Tumoral
8.
Phys Chem Chem Phys ; 20(17): 12288-12294, 2018 May 07.
Artículo en Inglés | MEDLINE | ID: mdl-29687803

RESUMEN

Nanoporous metals are a class of novel nanomaterials with potential applications in many fields. Herein, we demonstrate the cold-welding mechanism of nanoporous metals with various combinations using molecular dynamics simulations. This study shows that it is possible to cold-weld two nanoporous metals to form a novel composite material. The influence of temperature, in the range of 300-900 K, on the mechanical properties of the resultant composite material was investigated. With an increase in temperature, the weld stress and the mechanical strength of the nanoporous structures significantly decreased as an increase in disorder magnitude was observed. These results could lead to bottom-up nanofabrication and nanoassembly of combined nanoporous metals for high mechanical performance.

9.
BMC Cancer ; 16: 450, 2016 07 11.
Artículo en Inglés | MEDLINE | ID: mdl-27401536

RESUMEN

BACKGROUND: Diagnosing breast cancer during the early stage may be helpful for decreasing cancer-related mortality. In Western developed countries, mammographies have been the gold standard for breast cancer detection. However, Chinese women usually have denser and smaller-sized breasts compared to Caucasian women, which decreases the diagnostic accuracy of mammography. However, breast specific gamma imaging, a type of molecular functional breast imaging, has been used for the accurate diagnosis of breast cancer and is not influenced by breast density. Our objective was to analyze the breast specific gamma imaging (BSGI) diagnostic value for Chinese women. METHODS: During a 2-year period, 357 women were diagnosed and treated at our oncology department and received BSGI in addition to mammography (MMG), ultrasound (US) and magnetic resonance imaging (MRI) for diagnostic assessment. We investigated the sensitivity and specificity of each method of detection and compared the biological profiles of the four imaging methods. RESULTS: A total of 357 women received a final surgical pathology diagnosis, with 168 malignant diseases (58.5 %) and 119 benign diseases (41.5 %). Of these, 166 underwent the four imaging tests preoperatively. The sensitivity of BSGI was 80.35 and 82.14 % by US, 75.6 % by MMG, and 94.06 % by MRI. Furthermore, the breast cancer diagnosis specificity of BSGI was high (83.19 % vs. 77.31 % vs. 66.39 % vs. 67.69 %, respectively). The BSGI diagnostic sensitivity for mammographic breast density in women was superior to mammography and more sensitive for non-luminal A subtypes (luminal A vs. non-luminal A, 68.63 % vs. 88.30 %). CONCLUSIONS: BSGI may help improve the ability to diagnose early stage breast cancer for Chinese women, particularly for ductal carcinoma in situ (DCIS), mammographic breast density and non-luminal A breast cancer.


Asunto(s)
Neoplasias de la Mama/diagnóstico por imagen , Mama/diagnóstico por imagen , Carcinoma Intraductal no Infiltrante/diagnóstico por imagen , Detección Precoz del Cáncer/métodos , Adulto , Anciano , Mama/patología , Mama/fisiología , Mama/cirugía , Densidad de la Mama , Neoplasias de la Mama/patología , Neoplasias de la Mama/cirugía , Carcinoma Intraductal no Infiltrante/patología , Carcinoma Intraductal no Infiltrante/cirugía , China , Femenino , Rayos gamma , Humanos , Inmunohistoquímica , Imagen por Resonancia Magnética , Mamografía , Persona de Mediana Edad , Cintigrafía , Radiofármacos/administración & dosificación , Estudios Retrospectivos , Sensibilidad y Especificidad , Tecnecio Tc 99m Sestamibi/administración & dosificación , Ultrasonografía
10.
Front Immunol ; 15: 1388176, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38840908

RESUMEN

The tumor microenvironment is closely linked to the initiation, promotion, and progression of solid tumors. Among its constitutions, immunologic cells emerge as critical players, facilitating immune evasion and tumor progression. Apart from their indirect impact on anti-tumor immunity, immunocytes directly influence neoplastic cells, either bolstering or impeding tumor advancement. However, current therapeutic modalities aimed at alleviating immunosuppression from regulatory cells on effector immune cell populations may not consistently yield satisfactory results in various solid tumors, such as breast carcinoma, colorectal cancer, etc. Therefore, this review outlines and summarizes the direct, dualistic effects of immunocytes such as T cells, innate lymphoid cells, B cells, eosinophils, and tumor-associated macrophages on tumor cells within the tumor microenvironment. The review also delves into the underlying mechanisms involved and presents the outcomes of clinical trials based on these direct effects, aiming to propose innovative and efficacious therapeutic strategies for addressing solid tumors.


Asunto(s)
Neoplasias , Microambiente Tumoral , Humanos , Microambiente Tumoral/inmunología , Neoplasias/inmunología , Neoplasias/terapia , Neoplasias/patología , Animales , Inmunidad Innata , Comunicación Celular/inmunología , Macrófagos Asociados a Tumores/inmunología , Macrófagos Asociados a Tumores/metabolismo , Escape del Tumor , Inmunoterapia/métodos
11.
PLoS One ; 18(1): e0280669, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36662756

RESUMEN

BACKGROUND: Prognostic nutritional index (PNI), as an indicator of nutritional immune status, has been shown to be associated with therapeutic effects and survival of solid tumors. However, the prognostic role of PNI before treatment in human breast cancer (BC) is still not conclusive. Hence, we performed this meta-analysis to assess the value of it in prognosis prediction for BC patients. MATERIALS AND METHODS: We searched PubMed, Embase, Web of Science and EBSCO to identify the studies evaluating the association between PNI and survival such as overall survival (OS), disease-free survival (DFS) of BC, and computed extracted data into hazard ratios (HRs) for OS, DFS and clinicopathological features with STATA 12.0. RESULTS: A total of 2322 patients with BC from 8 published studies were incorporated into this meta-analysis. We discovered that low pretreatment PNI was significantly associated with worse OS, but not with DFS in BC patients. In stratified analyses, the result showed that decreased PNI before treatment was remarkably related with lower 3-year, 5-year, 8-year and 10-year OS, but not with 1-year survival rate in BC. In addition, although reduced PNI could not impact 1-year, 3-year or 5-year DFS, it considerably deteriorated 8-year and 10-year DFS in patients. CONCLUSION: Low pretreatment PNI deteriorated OS, 8-year and 10-year DFS in BC patients, implicating that it is a valuable prognostic index and improving the nutritional immune status may offer a therapeutic strategy for these patients.


Asunto(s)
Neoplasias de la Mama , Evaluación Nutricional , Humanos , Femenino , Pronóstico , Estado Nutricional , Supervivencia sin Enfermedad
12.
Bioresour Technol ; 387: 129542, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37482201

RESUMEN

The utilization of wasted Poly(lactic acid) (PLA) as low-cost carbon sources in solid-phase denitrification is hindered by its low biodegradability, which can be attributed to its high molecular weight. This study presents a new approach by blending high-molecular-weight PLA with a small amount of ʟ-lactide (PLA/LAx) to treat nitrate-contaminated wastewater. The addition of ʟ-lactide enhanced the release of carbon from high-molecular-weight PLA. An impressive denitrification efficiency of 96.7% was achieved, accompanied by extremely low levels of accumulated NO2--N (0.1 mg/L) and NH4+-N (0.4 mg/L). The quantity of ʟ-lactide used significantly impacted the bacterial community structure. A high abundance of the phyla Bacteroidota and Chloroflexi associated with polymer degradation was observed. The most dominant denitrifier was the genus unclassified_f__Rhodocyclaceae belonged to the phylum Proteobacteria. This study demonstrates that blending PLA with just 5 wt% lactide can transform it into a highly effective solid-phase carbon source to eliminate nitrates.


Asunto(s)
Carbono , Desnitrificación , Carbono/metabolismo , Peso Molecular , Poliésteres/metabolismo , Nitratos/metabolismo
13.
Drug Deliv ; 30(1): 1-8, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36453025

RESUMEN

Skin infection is a major health issue that usually is caused by the continuous proliferation of bacteria in wounds. With the abuse of antibiotics worldwide, the battle against skin infection is becoming more and more difficult. Therefore, the development of new ways with different antibacterial mechanisms to current antibiotics is urgently needed. Inspired by the powerful inhibition of ferroptosis used in cancer therapy, here in our study, ferric-loaded lipid nanoparticles (Fe-LNPs) with unform size (∼130 nm) and surface charge (∼12 mV) were constructed and found to effectively inhibit the growth of both Gram positive (Staphylococcus aureus, S. aureus) and negative (Escherichia coli, E. coli) strains, possibly due to induction of ferroptosis-like cell death mechanisms. Most importantly, Fe-LNPs can also effectively inhibit the proliferation of S. aureus in a skin infection model and promote the healing of wounds. The Fe-LNPs can be applied as a powerful antibacterial formulation for future application in clinic.


Asunto(s)
Ferroptosis , Staphylococcus aureus , Escherichia coli , Cicatrización de Heridas , Electrólitos , Antibacterianos/farmacología , Muerte Celular
14.
PLoS One ; 17(4): e0265897, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35436305

RESUMEN

BACKGROUND: Systemic inflammatory response (SIR) plays important roles in initiation, promotion and progression of tumor. However, the prognostic role of baseline circulating platelet-to-lymphocyte ratio (PLR) (known as a marker of SIR) in human initial stage Ⅳ gastric cancer (GC) remains controversial. Hence, we performed this meta-analysis to assess the value of it in prognosis prediction for these patients. MATERIALS AND METHODS: We searched PubMed, Embase and EBSCO to identify the studies and computed extracted data with STATA 12.0. RESULTS: A total of 3025 patients with initial stage Ⅳ GC from 13 published studies were incorporated into this meta-analysis. We found that elevated baseline circulating PLR was significantly associated with decreased overall survival (OS), but not with progression-free survival (PFS) in stage Ⅳ GC patients. However, in stratified analyses, high PLR was only associated with worse 1-year and 2-year OS, but not with 3-year or 4-year OS; In addition, it was considerably related with reduced 6-month PFS, but not with 1-year or 2-year PFS. Moreover, high PLR markedly correlated with peritoneal metastasis of GC. CONCLUSION: Elevated baseline circulating PLR decreased 1-year OS and 6-month PFS in initial stage Ⅳ GC patients, implicating that it is a valuable prognostic index for these patients and modifying the inflammatory responses may have a potential for effective treatment.


Asunto(s)
Neoplasias Gástricas , Biomarcadores , Plaquetas/patología , Humanos , Linfocitos/patología , Neutrófilos/patología , Pronóstico , Neoplasias Gástricas/patología
15.
Front Oncol ; 12: 986903, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36761428

RESUMEN

Purpose: Immune checkpoint molecule lymphocyte-activating gene-3 (LAG-3), which is expressed on active lymphocytes, has proven to be associated with immunosuppression and cancer progression in a variety of solid tumors. However, the role of LAG-3+ lymphocytes in human breast cancer (BC) is still not conclusive. We therefore performed a meta-analysis to clarify the role of these cells in prognosis prediction for BC. Methods: We searched PubMed, Embase, and EBSCO to identify the studies evaluating the association of LAG-3+ lymphocyte infiltration and overall survival (OS) and/or disease-free survival (DFS) in BC patients, then combined extracted data with STATA 12.0. Results: Eight published studies involving 5,859 BC patients were incorporated into this meta-analysis. We noted that a high number of LAG-3+ tumor-infiltrating lymphocytes were not appreciably associated with OS and DFS in BC patients. Strikingly, in stratified analyses based on the molecular type of BC, LAG-3+ lymphocyte infiltration was remarkably associated with better OS rather than DFS in triple-negative breast cancer (TNBC), whereas it significantly influenced neither OS nor DFS in Her2-positive BC. However, an increased density of these lymphocytes indicated a trend for better OS in Her2-positive BC. In addition, we found that LAG-3+ lymphocyte infiltration was also remarkably associated with prolonged OS in Her2-positive BC patients when they were measured by immunohistochemistry (IHC). In addition, an elevated number of these lymphocytes did not correlate with pathological complete response rate or clinicopathological features including lymph node metastasis. Conclusion: The infiltration of LAG-3+ lymphocytes ameliorates OS in TNBC and Her2-positive BC, implicating that it is a valuable prognostic biomarker, and applications of anti-LAG-3 antagonists may possibly be not a promising therapeutic strategy for human BC especially for TNBC.

16.
Aging (Albany NY) ; 13(10): 13693-13707, 2021 05 03.
Artículo en Inglés | MEDLINE | ID: mdl-33946048

RESUMEN

Fibroblasts are a highly heterogeneous population in tumor microenvironment. PDGFR-ß+ fibroblasts, a subpopulation of activated fibroblasts, have proven to correlate with cancer progression through multiple of mechanisms including inducing angiogenesis and immune evasion. However, the prognostic role of these cells in solid tumors is still not conclusive. Herein, we carried out a meta-analysis including 24 published studies with 6752 patients searched from PubMed, Embase and EBSCO to better comprehend the value of such subpopulation in prognosis prediction for solid tumors. We noted that elevated density of intratumoral PDGFR-ß+ fibroblasts was remarkably associated with worse overall survival (OS) and disease-free survival (DFS) of patients. In subgroup analyses, the data showed that PDGFR-ß+ fibroblast infiltration considerably decreased OS in non-small cell lung cancer (NSCLC), breast and pancreatic cancer, and reduced DFS in breast cancer. In addition, increased number of PDGFR-ß+ fibroblasts appreciably correlated with advanced TNM stage of patients. In conclusion, PDGFR-ß+ fibroblast infiltration deteriorates survival in human solid tumors especially in NSCLC, breast and pancreatic cancer. Hence, they may offer a practicable prognostic biomarker and a potential therapeutic strategy for these patients.


Asunto(s)
Fibroblastos/patología , Neoplasias/patología , Receptor beta de Factor de Crecimiento Derivado de Plaquetas/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Sesgo de Publicación , Análisis de Supervivencia
17.
Am J Transl Res ; 12(7): 3858-3870, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32774740

RESUMEN

NSUN5, a gene encodes a cytosine-5 RNA methyltransferase, is rarely mentioned in cancers. Our study is the first one to evaluate the role of NSUN5 in the progression of colorectal cancer. Data from TCGA was used to show the different expression of NSUN5 between CRC tumor tissues and adjacent normal ones. The NSUN5 expression in the tissue microarray was detected by immunohistochemistry (IHC). qRT-PCR was conducted for NSUN5 expression examination in CRC cell lines. Cell proliferation was analyzed by the Celigo machine. GESA and correlation analysis were performed to reveal the possible underlying mechanism. The effects of NSUN5 expression on CRC cell behavior in vitro were analyzed by flow cytometry and ß-galactosidase staining. The expression of cell-cycle related proteins were evaluated by western blot. Subcutaneously implanted tumor model was carried out for animal experiment. NSUN5 expression was up-regulated in CRC tumor tissues and cells, and associated with advanced tumor stages (III, IV). NSUN5 could promote cell proliferation, trigger cell cycle arrest in vitro and boost tumor growth in vivo. In addition, knockdown of NSUN5 could lead to a higher expression of Rb and a lower expression of CDK4, CDK6, p-Rb and CCNE1, but made no difference on P21, Bcl-2, caspase3 and C-Caspase3 of CRC cells. Taken together, we identify NSUN5 as a promoter in CRC development via cell cycle regulation.

18.
Am J Transl Res ; 12(10): 6976, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33194089

RESUMEN

[This corrects the article on p. 3858 in vol. 12, PMID: 32774740.].

19.
Cancer Immunol Res ; 8(10): 1273-1286, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32847938

RESUMEN

The tumor microenvironment induces immunosuppression via recruiting and expanding suppressive immune cells such as regulatory T cells (Treg) to promote cancer progression. In this study, we documented that tumor-infiltrating CD73+ γδTregs were the predominant Tregs in human breast cancer and exerted more potent immunosuppressive activity than CD4+ or CD8+ Tregs. We further demonstrated that cancer-associated fibroblast (CAF)-derived IL6, rather than TGFß1, induced CD73+ γδTreg differentiation from paired normal breast tissues via the IL6/STAT3 pathway to produce more adenosine and become potent immunosuppressive T cells. CD73+ γδTregs could in turn promote IL6 secretion by CAFs through adenosine/A2BR/p38MAPK signaling, thereby forming an IL6-adenosine positive feedback loop. CD73+ γδTreg infiltration also impaired the tumoricidal functions of CD8+ T cells and significantly correlated with worse prognosis of patients. The data indicate that the IL6-adenosine loop between CD73+ γδTregs and CAFs is important to promote immunosuppression and tumor progression in human breast cancer, which may be critical for tumor immunotherapy.


Asunto(s)
5'-Nucleotidasa/metabolismo , Adenosina/metabolismo , Neoplasias de la Mama/metabolismo , Fibroblastos Asociados al Cáncer/metabolismo , Interleucina-6/metabolismo , Linfocitos Intraepiteliales/metabolismo , Adenosina/inmunología , Neoplasias de la Mama/inmunología , Neoplasias de la Mama/patología , Fibroblastos Asociados al Cáncer/inmunología , Fibroblastos Asociados al Cáncer/patología , Proteínas de la Matriz Extracelular/inmunología , Proteínas de la Matriz Extracelular/metabolismo , Retroalimentación Fisiológica , Femenino , Proteínas Ligadas a GPI/metabolismo , Humanos , Interleucina-6/inmunología , Linfocitos Intraepiteliales/inmunología , Linfocitos Intraepiteliales/patología , Factor de Crecimiento Transformador beta/inmunología , Factor de Crecimiento Transformador beta/metabolismo , Microambiente Tumoral
20.
Oncotarget ; 9(8): 8111-8119, 2018 Jan 30.
Artículo en Inglés | MEDLINE | ID: mdl-29487719

RESUMEN

The prognostic role of tumor-infiltrating CD57-positive lymphocytes (CD57+ lymphocytes) in human solid tumors remains controversial. Herein, we conducted a meta-analysis including 26 published studies with 7656 patients identified from PubMed and EBSCO to assess the prognostic impact of tumor-infiltrating CD57+ lymphocytes in human solid tumors. We found that CD57+ lymphocyte infiltration significantly improved overall survival (OS) including 1 - year, 3 - year and 5 - year survival, and disease - free survival (DFS) in all types of solid tumors. In stratified analyses, CD57+ lymphocyte infiltration was significantly associated with better OS in hepatocellular, esophageal, head and neck carcinoma, non-small cell lung cancer, 5 - year survival in colorectal cancer, and 3 - year and 5 - year survival in gastric cancer, but not with 1 - year survival in gastric cancer, or 1 - year or 3 - year survival in colorectal cancer. In addition, high density of intratumoral CD57+ lymphocytes was significantly inversely correlated with lymph node metastasis and TNM stage of solid tumor. In conclusion, CD57+ lymphocyte infiltration leads to a favorable clinical outcome in solid tumors, implicating that it is a useful biomarker for prognosis and adoptive immunotherapy based on these cells may be a promising choice for treatment.

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