RESUMEN

PURPOSE: The purpose of this study is to explore the prognostic value of associating pre-treatment neutrophil-lymphocyte ratio (NLR) with circulating tumor cells counts (CTCs) in patients with gastrointestinal cancer. MATERIALS AND METHODS: We collected the related data of 72 patients with gastric cancer (GC) and colorectal cancer (CRC) who received different therapies from August 2016 to October 2020, including age, gender, primary tumor location, TNM stage, tumor-differentiation, NLR, CTCs, disease-free survival (DFS) and overall survival (OS). We chose the optimal cut-off value of NLR >3.21 or NLR ≤3.21 and CTC >1 or CTC ≤1 by obtaining receiver operating characteristic (ROC) curve. The Kaplan-Meier survival analysis and Cox regression analysis were used to analyze DFS and OS. To clarify the role of the combination of NLR and CTCs counts in predicting the prognosis, we analyzed the DFS and OS when associated NLR and CTCs counts. RESULTS: A high NLR (>3.21) was associated with shorter DFS (P <0.0001) and OS (P <0.0001). Patients with high CTCs level (>1) had shorter DFS (P = 0.001) and OS (P = 0.0007) than patients with low CTCs level. Furthermore, patients who had both higher NLR and higher CTCs counts had obvious shorter DFS (P <0.0001) and OS (P <0.0001). CONCLUSIONS: Patients with higher NLR and more CTCs respectively tended to have poor prognosis with shorter DFS and OS, which might be regarded as predictors of gastrointestinal cancer. In particular, associating NLR and CTCs counts might be a reliable predictor in patients with gastrointestinal cancer.

RESUMEN

BACKGROUND: To investigate the relationship of circulating tumor cells (CTCs) and the clinical characteristic parameters and prognosis in patients with head and neck squamous cell carcinoma (HNSCC). METHODS: The retrospective clinical study included 95 patients with HNSCC who after surgery in Shanghai Ninth People's Hospital affiliated to Shanghai Jiao Tong University School of Medicine between December 2015 and December 2016. All patients were followed up for survival until the end of June 2019. The CTCs detection was performed by negative enrichment (NE) immunofluorescence-in situ hybridization (im-FISH) of chromosome 8. RESULTS: Patients with higher CTCs counts are associated with a worse prognosis with an area under the receiver operator characteristic (ROC) curve of 0.756 [95% confidence interval (CI) 0.640-0.872, p = 0.001]. The CTCs-positive rate of HNSCC patients was 58.9% (56/95) by using the cut-point of 3. Both the chi-square test and binary logistic regression analysis showed that the N stage and clinical stage were significantly associated with CTCs-positive in patients with HNSCC (p < 0.05). Further Non-parametric test analysis indicated that more CTCs counts were detected in late N and clinical stages patients (p < 0.001). The Kaplan-Meier survival analysis indicated that CTCs-positive were correlated with shorter progression-free survival (PFS) (p < 0.001) and overall survival (OS) (p = 0.001). Further, the CTCs-positive was an independent prognostic factor for PFS and OS according to the Cox multivariate regression analysis (p < 0.05). CONCLUSION: More CTCs were associated with N stage, clinical stage, poor prognosis in patients with HNSCC, which might be used as a prognostic biomarker.

Asunto(s)

Biomarcadores de Tumor , Células Neoplásicas Circulantes/patología , Carcinoma de Células Escamosas de Cabeza y Cuello/mortalidad , Carcinoma de Células Escamosas de Cabeza y Cuello/patología , Adulto , Anciano , Biopsia , Femenino , Humanos , Hibridación Fluorescente in Situ , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Metástasis de la Neoplasia , Estadificación de Neoplasias , Células Neoplásicas Circulantes/metabolismo , Pronóstico , Curva ROC , Estudios Retrospectivos , Carcinoma de Células Escamosas de Cabeza y Cuello/cirugía

RESUMEN

Aim: To explore the prognostic value of the systemic inflammatory marker (SIM) based on neutrophil, lymphocyte and monocyte counts in head and neck squamous cell carcinoma (HNSCC) patients. Patients & methods: We retrospectively collected the data of 367 patients with HNSCC who underwent surgery. The Kaplan-Meier survival analysis and Cox regression analysis were conducted on disease-free survival and overall survival. Results: A high SIM (>1.34) was associated with larger tumor size, advanced clinical stage and shorter survival time. The survival analysis showed that only clinical stage and SIM were independent prognostic indicators of disease-free survival and overall survival. Conclusion: The SIM positively correlated with tumor progression and might be a powerful prognostic indicator of poor outcome in patients with HNSCC.

Asunto(s)

Neoplasias de Cabeza y Cuello/mortalidad , Neoplasias de Cabeza y Cuello/patología , Carcinoma de Células Escamosas de Cabeza y Cuello/mortalidad , Carcinoma de Células Escamosas de Cabeza y Cuello/patología , Anciano , Biomarcadores de Tumor/sangre , Supervivencia sin Enfermedad , Femenino , Neoplasias de Cabeza y Cuello/sangre , Neoplasias de Cabeza y Cuello/cirugía , Humanos , Inflamación , Recuento de Leucocitos , Linfocitos/patología , Masculino , Persona de Mediana Edad , Monocitos/patología , Neutrófilos/patología , Pronóstico , Estudios Retrospectivos , Carcinoma de Células Escamosas de Cabeza y Cuello/sangre , Carcinoma de Células Escamosas de Cabeza y Cuello/cirugía , Tasa de Supervivencia

RESUMEN

PURPOSE: This study aimed to evaluate the prognostic value of circulating tumor cells (CTCs) in advanced colorectal cancer (CRC) patients during chemotherapy course. METHODS: From January 2016 to September 2017, the clinicopathological variables, such as gender, age, tumor location, tumor de-differentiation, depth of invasion, lymphatic invasion, distant metastasis, TNM stage, CTCs enumeration during 2-6 cycles of chemotherapy, and serum carcinoembryonic antigen (CEA) level during the same period, of 121 newly acquired and histopathologically confirmed CRC patients were collected from the Shanghai Ninth People's Hospital affiliated to Shanghai Jiao Tong University School of Medicine. All patients were followed up for survival until the end of November 2018. Statistical analysis focused on the associations between CTCs counts and clinicopathological variables. Overall survival (OS) and progression-free survival (PFS) among different prognostic factors were calculated using the Kaplan-Meier method, and the differences between the survival curves were compared by using the log-rank test. Factors of prognostic significance were investigated with the multivariate Cox regression analysis. RESULTS: Here, 71 of 121 patients were CTC-positive, in which CTC-positive rate was positively correlated with the depth of invasion, lymphatic invasion, distant metastasis, TNM stage, and serum CEA level (P < 0.05 for all). However, no significant difference was found between CTC-positive and other clinicopathological variables (P > 0.05 for all), such as gender, age, tumor location, and tumor de-differentiation. CTCs counts gradually increased with the advancement of depth of invasion (P = 0.002), lymphatic invasion (P = 0.004), distant metastasis (P = 0.007), TNM stage (P = 0.001), serum CEA level (P = 0.001), and decreased tumor de-differentiation (P = 0.011). Furthermore, the Kaplan-Meier survival curves showed that patients with CTC-positive had a significantly unfavorable PFS (14 vs. 23 months, P = 0.001) and OS (18 vs. 25 months, P = 0.003). The multivariate Cox regression analyses revealed that the presence of CTCs during chemotherapy was an independent factor for unfavorable PFS (hazard ratio (HR) 2.682, P = 0.017, 95% confidence interval (CI) 1.193-6.029) and OS (HR 2.790, P = 0.048, 95% CI 1.010-7.705) in advanced CRC patients. CONCLUSIONS: This study provided an evidence that the presence of CTCs may be valuable for predicting survival outcome, and CTCs was associated with unfavorable survival in advanced CRC patients during chemotherapy.

Asunto(s)

Neoplasias Colorrectales/patología , Células Neoplásicas Circulantes/patología , Adulto , Anciano , Anciano de 80 o más Años , Supervivencia sin Enfermedad , Femenino , Humanos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Análisis Multivariante , Estadificación de Neoplasias , Pronóstico , Estudios Retrospectivos

RESUMEN

Rab GTPases constitute the largest family of small GTPases. Rabs regulate not only membrane trafficking but also cell signaling, growth and survival, and development. Increasingly, Rabs and their effectors are shown to be overexpressed or subject to loss-of-function mutations in a variety of disease settings, including cancer progression. This review provides an overview of dysregulated Rab proteins in cancer, and highlights the signaling and secretory pathways in which they operate, with the aim of identifying potential avenues for therapeutic intervention. Recent progress and perspectives for direct and/or indirect targeting of Rabs are also summarized.

Asunto(s)

Neoplasias/tratamiento farmacológico , Proteínas de Unión al GTP rab/antagonistas & inhibidores , Animales , Humanos , Neoplasias/metabolismo , Transducción de Señal , Proteínas de Unión al GTP rab/metabolismo

RESUMEN

CONTEXT: Dyspnea is one of the most common and distressing symptoms that occurs in terminal cancer patients. However, there are no existing treatment guidelines for this condition in China. OBJECTIVE: This single-center, retrospective, observational study aimed to compare the efficacy of using morphine, methylprednisolone, or aminophylline to relieve the symptom of breathlessness in patients with advanced malignant tumors and to investigate the safety of these regimens during the treatment of dyspnea. METHODS: Between August 2011 and January 2015 we retrospectively reviewed the medical records of 343 terminally ill cancer patients with dyspnea who received morphine, methylprednisolone, or aminophylline. The therapeutic effect of each treatment by means of visual analogue scale (VAS) scores was assessed and compared. Statistical methods included Chi square and analysis of variance tests. Differences were considered significant when P < 0.05. RESULTS: VAS scores after treatment were (16.82 ± 10.89), (25.72 ± 15.03), and (31.95 ± 16.00) points in the morphine, methylprednisolone, and aminophylline group, respectively. These differences were found to be significantly different (P < 0.05). The effectiveness ratings were 86.44, 62.16, and 49.12%, respectively (P < 0.05). CONCLUSIONS: We found that morphine subcutaneous injection for advanced cancer patients with dyspnea was safe and typically more effective than methylprednisolone or aminophylline. Therefore, morphine treatment could significantly improve the quality of life in terminal cancer patients with short life expectancies who are experiencing shortness of breath.

RESUMEN

Forkhead box M1 (FOXM1), a member of the Fox family of transcriptional factors, is considered to be an independent predictor of poor survival in many solid cancers. However, the underlying mechanism is not yet clear. The aim of the present study was to investigate the clinical significance of the correlation between FOXM1 and epithelial-mesenchymal transition (EMT) in non-small cell lung carcinoma and the possible mechanism responsible for FOXM1-induced EMT and metastasis. In the present study, expression levels of FOXM1 and EMT indicator proteins were determined by tissue microarray (TMA) and immunohistochemical staining, western blotting and reverse transcription-PCR (RT-PCR). Other cellular and molecular approaches including gene transfection, small interfering RNA (siRNA), and migration and invasion assays were utilized. Our results demonstrated that FOXM1 overexpression was statistically significantly associated with a higher TNM stage (p=0.036), lymph node metastasis (p=0.009) and a positive smoking history of the patients (p=0.044). Additionally, high expression of FOXM1 correlated with loss of E-cadherin expression (p<0.001) and anomalous immunopositivity of Vimentin (p=0.002). Moreover, patient survival analysis demonstrated that high expression of FOXM1 (p=0.043) and the presence of lymph node metastasis (p=0.042) were independent prognostic factors for non-small cell lung cancer (NSCLC). Furthermore, various in vitro experiments indicated that overexpression or knockdown of FOXM1 expression altered EMT through activation or inhibition of the AKT/p70S6K signaling pathway. Collectively, the results suggest that FOXM1 may be used as a prognostic indicator for patients with NSCLC and promotes metastasis by inducing EMT of lung cancer cells through activation of the AKT/p70S6K pathway. Therefore, we suggest that FOXM1 may be a potential target for lung cancer therapy.

Asunto(s)

Carcinoma de Pulmón de Células no Pequeñas/genética , Factores de Transcripción Forkhead/biosíntesis , Metástasis Linfática/genética , Pronóstico , Anciano , Carcinoma de Pulmón de Células no Pequeñas/patología , Transición Epitelial-Mesenquimal/genética , Femenino , Proteína Forkhead Box M1 , Factores de Transcripción Forkhead/genética , Regulación Neoplásica de la Expresión Génica , Humanos , Metástasis Linfática/patología , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Proteína Oncogénica v-akt/genética , Proteína Oncogénica v-akt/metabolismo , Proteínas Quinasas S6 Ribosómicas 70-kDa/metabolismo , Transducción de Señal/genética

RESUMEN

The expression of miR-145 with tumor suppressor function is decreased in lung cancer cells. Epidermal growth factor receptor (EGFR) signaling pathway is abnormally activated in lung cancer cells. It is not clear whether the EGFR signaling pathway is involved in the regulation of miR-145 expression in lung cancer. In the present study, we found that the reduction of miR-145 was associated with EGFR abnormal activation in lung cancer cells. AG1478, an inhibitor of EGFR, may restore the expression of miR-145, indicating that EGFR activation is involved in the downregulation of miR-145 in lung cancer cells. Then, the application of STAT3, AKT and ERK1/2 inhibitors and siRNA against these signaling molecules indicated that ERK1/2 or AKT instead of STAT3 was involved in the process of miR-145 downregulation by EGFR. It was confirmed that AKT through activation of the ERK1/2 signaling molecules mediated the effect of EGFR on miR-145. Furthermore, we found that EGFR downregulated miR-145 through ERK1/2 in lung cancer cells. These findings establish EGFR and miR-145 links in lung cancer cells and therefore contribute to a better understanding of the role of EGFR in lung cancer cells, and provide clues for in-depth study of miR-145 expression and a possible direction for the further increase of miR-145 in lung cancer cells.

Asunto(s)

Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Receptores ErbB/metabolismo , Neoplasias Pulmonares/metabolismo , Sistema de Señalización de MAP Quinasas/fisiología , MicroARNs/metabolismo , Western Blotting , Carcinoma de Pulmón de Células no Pequeñas/genética , Línea Celular Tumoral , Regulación hacia Abajo , Regulación Neoplásica de la Expresión Génica/fisiología , Humanos , Neoplasias Pulmonares/genética , ARN Interferente Pequeño , Reacción en Cadena en Tiempo Real de la Polimerasa , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Transducción de Señal/fisiología , Transfección

RESUMEN

FOXM1, a member of the Forkhead transcriptional family, plays an important role in the EMT process, and transforming growth factor-ß1 (TGF-ß1) has been identified as the most potent factor that can independently induce EMT in various types of cancer cells. Here we examine the important role of FOXM1 in TGF-ß1-induced EMT and investigate the mechanism underlying the relationship between TGF-ß1 and FOXM1. Lentivirus-mediated transfection was used to stably upregulate the expression of FOXM1, and a small interfering RNA (siRNA) was introduced to silence the expression of FOXM1. Transwell and wound-healing assays were then performed to assess the invasion and motility potential of non-small cell lung cancer (NSCLC) cells. The NSCLC cell lines exhibited EMT characteristics, including an elongated fibroblastoid shape, induced expression of EMT marker proteins, and increased migratory and invasive potential after induction with TGF-ß1. The overexpression of FOXM1 enhanced TGF-ß1-induced EMT in NSCLC cells. Knockdown of FOXM1 reversed TGF-ß1-induced EMT in NSCLC cell lines but had no effect on the phosphorylation level of ERK. Additionally, U0126, an ERK signaling inhibitor, exerted a reversible effect on TGF-ß1-induced EMT and inhibited FOXM1 expression. FOXM1 regulated by the ERK pathway can mediate TGF-ß1-induced EMT in NSCLC and is a potential target for the treatment of NSCLC.

Asunto(s)

Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Factores de Transcripción Forkhead/metabolismo , Neoplasias Pulmonares/metabolismo , Biomarcadores de Tumor/metabolismo , Butadienos/farmacología , Carcinoma de Pulmón de Células no Pequeñas/patología , Línea Celular Tumoral , Movimiento Celular/genética , Transición Epitelial-Mesenquimal/efectos de los fármacos , Transición Epitelial-Mesenquimal/genética , Proteína Forkhead Box M1 , Factores de Transcripción Forkhead/genética , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Humanos , Neoplasias Pulmonares/patología , Sistema de Señalización de MAP Quinasas/efectos de los fármacos , Terapia Molecular Dirigida , Invasividad Neoplásica/genética , Nitrilos/farmacología , ARN Interferente Pequeño/genética , Factor de Crecimiento Transformador beta1/metabolismo , Transgenes/genética , Cicatrización de Heridas/genética

RESUMEN

OBJECTIVE: To explore the effects of EGFR-TKI AG1478 on the expression of FoxMl and FOXO3a genes in non-small cell cancer (NSCLC) cell lines, and explore the effect on cell proliferation and drug sensitivity to AG1478 after down-regulation of FOXMl and FOXO3a expression by RNAi technique. METHODS: Human lung cancer cells were treated with AG1478 at different concentrations. RT-PCR and Western blot were used to examine the expression of P-EGFR, FOXM1, FOXO3a mRNA and protein. After transient transfection of FOXM1 and FOXO3a siRNA, RT-PCR and Western blot were employed to determine the transfection efficiency and expression of the related proteins. CCK-8 assay, colony formation assay and flow cytometry were performed to evaluate the cell proliferation, colony formation ability and the changes in cell cycle distribution. RESULTS: The expressions of FOXM1 mRNA and protein were inhibited by AG1478 in a dose-dependent manner (both P < 0.05). After transfection with FOXM1 siRNA, the expressions of FOXM1 mRNA and protein, and proteins of cyclin B1, c-Myc, and Bcl-2 were significantly down-regulated, and the expressions of p21 and cleaved-PARP proteins were significantly up-regulated (all P < 0.05). The colony number of FOXM1siRNA transfection group was 37.3 ± 8.6, significantly lower than that of the blank control (135.3 ± 7.0) and negative control group (125.3 ± 7.5, P < 0.05). The colony formation inhibition rate was (7.40 ± 0.94)% in the negative control group and (72.4 ± 6.09)% in the FOXM1 siRNA transfection group. FOXM1siRNA transfection induced cell cycle arrest at G2/M phase with a percentage of (55.6 ± 4.83)%, significantly higher than that of the blank control [(24.30 ± 1.95)%] and negative control group [(21.3 ± 2.06)%, P < 0.05]. Additionally, the FOXM1siRNA transfection significantly increased the chemosensitivity of A549 cells to AG1478 (P < 0.05). Besides, AG1478 induced expression and nuclear relocation of FOXO3a. After the FOXO3a siRNA transfection, the expression of FOXM1 protein was significantly up-regulated, and resulted in a reduction of AG1478-induced inhibition of FOXM1. CONCLUSIONS: The expression of FOXM1 is down-regulated by AG1478 via FOXO3a in the NSCLC cell lines, and then increases the chemosensitivity of A549 cells to AG1478. It suggests that FOXM1 could be a potential target for the therapy and drug exploitation for NSCLC.

Asunto(s)

Adenocarcinoma/metabolismo , Factores de Transcripción Forkhead/metabolismo , Neoplasias Pulmonares/metabolismo , Quinazolinas/farmacología , Tirfostinos/farmacología , Adenocarcinoma/patología , Apoptosis , Ciclo Celular , Línea Celular Tumoral , Proliferación Celular , Relación Dosis-Respuesta a Droga , Regulación hacia Abajo , Receptores ErbB/antagonistas & inhibidores , Proteína Forkhead Box M1 , Proteína Forkhead Box O3 , Factores de Transcripción Forkhead/genética , Humanos , Neoplasias Pulmonares/patología , Quinazolinas/administración & dosificación , ARN Mensajero/metabolismo , ARN Interferente Pequeño/genética , Transfección , Tirfostinos/administración & dosificación

RESUMEN

BACKGROUNDS: Polymorphisms of OPRM1 A118G and ABCB1 C3435T have been suggested to contribute to inter-individual variability regarding pain sensitivity, opioid usage, tolerance and dependence and incidence of adverse effects in patients with chronic pain. This study aimed to investigate the association of both two polymorphisms with opioid requirements in Chinese patients with cancer pain. METHODS: The genotypes of rs1799971 (OPRM1) and rs1045642 (ABCB1) were determined by PCR-RFLP and direct sequencing methods respectively in 112 patients with cancer-related pain. Comparisons between the different genotype or allele groups were performed with t-tests or one-way ANOVA tests, as appropriate. The potential relationship of allele number with opioid response was performed with a trend Jonckheere-Terpstra test. RESULTS: In the 112 subjects, the frequencies of variant 118 G and 3435T allele were 38.4% and 37.9%, respectively. Significant higher 24h-opioid doses were observed in patients with GG (P=0.0004) and AG + GG (P=0.005) genotypes than the AA carriers. The dominant mutant 118G allele tended to be associated with progressively increasing 24h-opioiddoses (P=0.001). Compared with CC/CT, patients with ABCB1 TT genotype received higher 24h- and weight-surface area-adjusted-24h- opioids doses (P=0.057 and 0.028, respectively). CONCLUSIONS: The OPRM1 A118G single nucleotide polymorphism (SNP) is a key contributor for the inter-individual variability in opioidrequirements in Chinese cancer pain patients. This may possibly extend to the ABCB1 C3435T SNP.

Asunto(s)

Analgésicos Opioides/uso terapéutico , Manejo del Dolor , Dolor/tratamiento farmacológico , Receptores Opioides mu/genética , Subfamilia B de Transportador de Casetes de Unión a ATP/genética , Anciano , Secuencia de Bases , China , Femenino , Fentanilo/uso terapéutico , Frecuencia de los Genes , Humanos , Masculino , Persona de Mediana Edad , Morfina/uso terapéutico , Neoplasias/etiología , Dolor/complicaciones , Percepción del Dolor , Polimorfismo de Nucleótido Simple , Análisis de Secuencia de ADN

RESUMEN

OBJECTIVE: To investigate the relationship between janus kinase2/signal transducer and activator of transcription 3 (JAK2/STAT3) signaling pathway and angiogenesis in non-small cell lung cancer (NSCLC) and explore the effects on the mRNA expression of vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF) by blocking JAK2/STAT3 signaling pathway. METHODS: Immunohistochemistry was used to determine the expression of P-JAK2, P-STAT3 and microvessel density (MVD) in 68 NSCLC tissues and 27 normal lung tissues. And the relationship with their clinical pathological features was analyzed. Human lung cancer A549 cells were treated with different concentrations of AG490. Cell proliferation was measured by MTT assay. Western blot was performed to detect the activation of JAK2/STAT3 signaling pathway. The mRNA expressions of VEGF and bFGF were determined by RT-PCR (reverse transcription-polymerase chain reaction). A549 cells were transfected with STAT3 siRNA. And the protein of STAT3, Phos-STAT3 (P-STAT3) and mRNA levels of VEGF and bFGF were detected. RESULTS: The activation of JAK2/STAT3 signaling pathway was closely related to MVD in NSCLC. AG490 and STAT3 siRNA could block the JAK2/STAT3 signaling pathway and down-regulated the mRNA expressions of VEGF and bFGF in lung cancer cells. CONCLUSION: JAK2/STAT3 signaling pathway plays an important role in the angiogenesis of NSCLC. Blocking this pathway may inhibit the expression of angiogenic cytokines. JAK2/STAT3 signaling pathway may be a critical therapeutic target for the treatment of angiogenesis in NSCLC.

Asunto(s)

Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Janus Quinasa 2/metabolismo , Neoplasias Pulmonares/metabolismo , Neovascularización Patológica , Factor de Transcripción STAT3/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Pulmón de Células no Pequeñas/irrigación sanguínea , Línea Celular Tumoral , Proliferación Celular , Femenino , Factor 2 de Crecimiento de Fibroblastos/metabolismo , Humanos , Neoplasias Pulmonares/irrigación sanguínea , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Transducción de Señal , Factor A de Crecimiento Endotelial Vascular/metabolismo

RESUMEN

We investigated the clinical significance of Janus Kinase 2/Signal Transducer and Activator of Transcription 3 (JAK2/STAT3), vascular endothelial growth factor (VEGF), and basic fibroblast growth factor (bFGF) during angiogenesis in non-small-cell lung carcinoma. JAK2, phospho-JAK2 (pJAK2), STAT3, and phospho-STAT3 (pSATA3) were observed in 40/68 (58.8%), 39/68 (57.4%), 49/68 (72.1%) and 40/68 (58.8%) of the cases. The high expression levels of molecules involved in the JAK2/STAT3 signaling pathway were associated with a decreased survival rate. Of the total number of cases, 73.5% were positive for VEGF and 80.9% for bFGF. Microvessel density (MVD), as determined by CD34 staining and morphology, was higher in NSCLC samples with high pJAK2 and pSTAT3 expression, and the patients with high MVD had poor survival status. In addition, the expression of pSTAT3 correlated with VEGF (r=0.593) and bFGF (r=0.519) (p<0.05). Inhibiting JAK2 and knocking down STAT3 both suppressed STAT3 activation and reduced the expression of VEGF and bFGF in A549 and NCI-H292 cells, demonstrating that STAT3 activation was associated with VEGF and bFGF expression in the two human lung carcinoma cell lines. Therefore, STAT3 may be a critical molecular target for powerful intervention in NSCLC anti-angiogenesis therapy.

Asunto(s)

Carcinoma de Pulmón de Células no Pequeñas/metabolismo , Janus Quinasa 2/metabolismo , Neoplasias Pulmonares/metabolismo , Microvasos/patología , Factor de Transcripción STAT3/metabolismo , Adulto , Anciano , Anciano de 80 o más Años , Antígenos CD34/metabolismo , Carcinoma de Pulmón de Células no Pequeñas/irrigación sanguínea , Carcinoma de Pulmón de Células no Pequeñas/diagnóstico , Carcinoma de Pulmón de Células no Pequeñas/mortalidad , Línea Celular Tumoral , Femenino , Factor 2 de Crecimiento de Fibroblastos/genética , Factor 2 de Crecimiento de Fibroblastos/metabolismo , Regulación Neoplásica de la Expresión Génica , Humanos , Neoplasias Pulmonares/irrigación sanguínea , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/mortalidad , Masculino , Microvasos/metabolismo , Persona de Mediana Edad , Neovascularización Patológica/genética , ARN Interferente Pequeño/genética , Factor de Transcripción STAT3/genética , Transducción de Señal/genética , Análisis de Supervivencia , Factor A de Crecimiento Endotelial Vascular/genética , Factor A de Crecimiento Endotelial Vascular/metabolismo