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1.
J Med Virol ; 96(6): e29769, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38932482

RESUMO

Integration of the human papillomavirus (HPV) genome into the cellular genome is a key event that leads to constitutive expression of viral oncoprotein E6/E7 and drives the progression of cervical cancer. However, HPV integration patterns differ on a case-by-case basis among related malignancies. Next-generation sequencing technologies still face challenges for interrogating HPV integration sites. In this study, utilizing Nanopore long-read sequencing, we identified 452 and 108 potential integration sites from the cervical cancer cell lines (CaSki and HeLa) and five tissue samples, respectively. Based on long Nanopore chimeric reads, we were able to analyze the methylation status of the HPV long control region (LCR), which controls oncogene E6/E7 expression, and to identify transcriptionally-active integrants among the numerous integrants. As a proof of concept, we identified an active HPV integrant in between RUNX2 and CLIC5 on chromosome 6 in the CaSki cell line, which was supported by ATAC-seq, H3K27Ac ChIP-seq, and RNA-seq analysis. Knockout of the active HPV integrant, by the CRISPR/Cas9 system, dramatically crippled cell proliferation and induced cell senescence. In conclusion, identifying transcriptionally-active HPV integrants with Nanopore sequencing can provide viable targets for gene therapy against HPV-associated cancers.


Assuntos
Terapia Genética , Sequenciamento por Nanoporos , Infecções por Papillomavirus , Neoplasias do Colo do Útero , Integração Viral , Humanos , Neoplasias do Colo do Útero/virologia , Feminino , Sequenciamento por Nanoporos/métodos , Integração Viral/genética , Terapia Genética/métodos , Infecções por Papillomavirus/virologia , Linhagem Celular Tumoral , Células HeLa , Proteínas Oncogênicas Virais/genética , Sequenciamento de Nucleotídeos em Larga Escala/métodos , Papillomaviridae/genética , Papillomavirus Humano
2.
Head Neck ; 2024 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-38943309

RESUMO

OBJECTIVE: Patients with laryngotracheal stenosis (LTS) often have dysphagia after laryngotracheal reconstruction with T-tube insertion, which affects the quality of life. The purpose of this study is to observe the effect of swallowing rehabilitation therapy on the improvement of quality of life in patients of otolaryngology-head and neck surgery with dysphagia undergoing T-tube implantation treatment through longitudinal study. METHODS: Thirty-eight patients with LTS who experienced dysphagia after laryngotracheal reconstruction and T-tube implantation were recruited. All patients received swallowing rehabilitation therapy. The assessment of swallowing function was performed using the 10-item Eating Assessment Tool (EAT-10), the 30 mL water swallow test (WST), and flexible endoscopic evaluation of swallow (FEES). RESULTS: After swallowing rehabilitation therapy, timing of swallowing, grade of dysphagia, performance on FEES and 30 mL WST, and EAT-10 score all improved. Thirty-eight patients successfully transitioned to oral feeding and were able to remove their nasogastric tubes without experiencing any complications, including aspiration pneumonia. CONCLUSION: For patients with LTS who experienced dysphagia after laryngotracheal reconstruction and T-tube implantation, swallowing rehabilitation therapy could improve swallowing function of the patients, so as to reduce the potential harm caused by the pain and complications of surgery experienced by patients.

3.
PLoS One ; 19(6): e0305553, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38875256

RESUMO

OBJECTIVES: Children with medical complexity experienced health disparities during the coronavirus disease 2019 (COVID-19) pandemic. Language may compound these disparities since people speaking languages other than English (LOE) also experienced worse COVID-19 outcomes. Our objective was to investigate associations between household language for children with medical complexity and caregiver COVID-19 vaccine intentions, testing knowledge, and trusted sources of information. METHODS: This cross-sectional survey of caregivers of children with medical complexity ages 5 to 17 years was conducted from April-June 2022. Children with medical complexity had at least 1 Complex Chronic Condition. Households were considered LOE if they reported speaking any language other than English. Multivariable logistic regression examined associations between LOE and COVID-19 vaccine intentions, interpretation of COVID-19 test results, and trusted sources of information. RESULTS: We included 1,338 caregivers of children with medical complexity (49% response rate), of which 133 (10%) had household LOE (31 total languages, 58% being Spanish). There was no association between household LOE and caregiver COVID-19 vaccine intentions. Caregivers in households with LOE had similar interpretations of positive COVID-19 test results, but significantly different interpretations of negative results. Odds of interpreting a negative test as expected (meaning the child does not have COVID-19 now or can still get the virus from others) were lower in LOE households (aOR [95% CI]: 0.56 [0.34-0.95]). Households with LOE were more likely to report trusting the US government to provide COVID-19 information (aOR [95% CI]: 1.86 [1.24-2.81]). CONCLUSION: Differences in COVID-19 test interpretations based on household language for children with medical complexity were observed and could contribute to disparities in outcomes. Opportunities for more inclusive public health messaging likely exist.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Idioma , Humanos , Criança , COVID-19/prevenção & controle , COVID-19/epidemiologia , Masculino , Feminino , Adolescente , Vacinas contra COVID-19/administração & dosagem , Pré-Escolar , Estudos Transversais , SARS-CoV-2 , Intenção , Cuidadores/psicologia , Adulto , Disparidades em Assistência à Saúde , Características da Família , Inquéritos e Questionários , Vacinação/psicologia , Vacinação/estatística & dados numéricos
5.
Infect Med (Beijing) ; 3(2): 100107, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38872909

RESUMO

Tuberculosis is a chronic infectious disease, caused by Mycobacterium tuberculosis, that seriously endangers human health. Skeletal tuberculosis is the most common type of extrapulmonary tuberculosis and tuberculous arthritis is the second most common type of skeletal tuberculosis. We report a case series of patients with tuberculous arthritis, two of whom had no joint disease in the past and presented as monoarthritis. The final patient had a history of rheumatoid arthritis, with polyarthritis that was aggravated during treatment with glucocorticoids and immunosuppressive drugs. This series of cases can contribute to early diagnosis and treatment with appropriate infection control measures.

6.
Front Nutr ; 11: 1380949, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38873565

RESUMO

Objective: Nutritional intervention prior to the occurrence of cachexia will significantly improve the survival rate of lung cancer patients. This study aimed to establish an ensemble learning model based on anthropometry and blood indicators without information on body weight loss to identify the risk factors of cachexia for early administration of nutritional support and for preventing the occurrence of cachexia in lung cancer patients. Methods: This multicenter study included 4,712 lung cancer patients. The least absolute shrinkage and selection operator (LASSO) method was used to obtain the key indexes. The characteristics excluded weight loss information, and the study data were randomly divided into a training set (70%) and a test set (30%). The training set was used to select the optimal model among 18 models and verify the model performance. A total of 18 machine learning models were evaluated to predict the occurrence of cachexia, and their performance was determined using area under the curve (AUC), accuracy, precision, recall, F1 score, and Matthews correlation coefficient (MCC). Results: Among 4,712 patients, 1,392 (29.5%) patients were diagnosed with cachexia based on the framework of Fearon et al. A 17-variable gradient boosting classifier (GBC) model including body mass index (BMI), feeding situation, tumor stage, neutrophil-to-lymphocyte ratio (NLR), and some gastrointestinal symptoms was selected among the 18 machine learning models. The GBC model showed good performance in predicting cachexia in the training set (AUC = 0.854, accuracy = 0.819, precision = 0.771, recall = 0.574, F1 score = 0.658, MCC = 0.549, and kappa = 0.538). The abovementioned indicator values were also confirmed in the test set (AUC = 0.859, accuracy = 0.818, precision = 0.801, recall = 0.550, F1 score = 0.652, and MCC = 0.552, and kappa = 0.535). The learning curve, decision boundary, precision recall (PR) curve, the receiver operating curve (ROC), the classification report, and the confusion matrix in the test sets demonstrated good performance. The feature importance diagram showed the contribution of each feature to the model. Conclusions: The GBC model established in this study could facilitate the identification of cancer cachexia in lung cancer patients without weight loss information, which would guide early implementation of nutritional interventions to decrease the occurrence of cachexia and improve the overall survival (OS).

7.
Eur J Med Chem ; 273: 116504, 2024 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-38795520

RESUMO

Monopolar spindle 1 (MPS1) has garnered significant attention due to its pivotal role in regulating the cell cycle. Anomalous expression and hyperactivation of MPS1 have been associated with the onset and advancement of diverse cancers, positioning it as a promising target for therapeutic interventions. This review focuses on MPS1 small molecule inhibitors from the past decade, exploring design strategies, structure-activity relationships (SAR), safety considerations, and clinical performance. Notably, we propose prospects for MPS1 degraders based on proteolysis targeting chimeras (PROTACs), as well as reversible covalent bonding as innovative MPS1 inhibitor design strategies. The objective is to provide valuable information for future development and novel perspectives on potential MPS1 inhibitors.


Assuntos
Antineoplásicos , Proteínas de Ciclo Celular , Neoplasias , Proteínas Serina-Treonina Quinases , Humanos , Neoplasias/tratamento farmacológico , Neoplasias/patologia , Neoplasias/metabolismo , Antineoplásicos/farmacologia , Antineoplásicos/química , Antineoplásicos/síntese química , Proteínas de Ciclo Celular/antagonistas & inibidores , Proteínas de Ciclo Celular/metabolismo , Relação Estrutura-Atividade , Proteínas Serina-Treonina Quinases/antagonistas & inibidores , Proteínas Serina-Treonina Quinases/metabolismo , Proteínas Tirosina Quinases/antagonistas & inibidores , Proteínas Tirosina Quinases/metabolismo , Inibidores de Proteínas Quinases/farmacologia , Inibidores de Proteínas Quinases/química , Bibliotecas de Moléculas Pequenas/química , Bibliotecas de Moléculas Pequenas/farmacologia , Bibliotecas de Moléculas Pequenas/síntese química , Patentes como Assunto , Estrutura Molecular
9.
Int J Biol Sci ; 20(7): 2622-2639, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38725840

RESUMO

Sorafenib is a standard first-line drug for advanced hepatocellular carcinoma, but the serious cardiotoxic effects restrict its therapeutic applicability. Here, we show that iron-dependent ferroptosis plays a vital role in sorafenib-induced cardiotoxicity. Remarkably, our in vivo and in vitro experiments demonstrated that ferroptosis inhibitor application neutralized sorafenib-induced heart injury. By analyzing transcriptome profiles of adult human sorafenib-treated cardiomyocytes, we found that Krüppel-like transcription factor 11 (KLF11) expression significantly increased after sorafenib stimulation. Mechanistically, KLF11 promoted ferroptosis by suppressing transcription of ferroptosis suppressor protein 1 (FSP1), a seminal breakthrough due to its ferroptosis-repressing properties. Moreover, FSP1 knockdown showed equivalent results to glutathione peroxidase 4 (GPX4) knockdown, and FSP1 overexpression counteracted GPX4 inhibition-induced ferroptosis to a substantial extent. Cardiac-specific overexpression of FSP1 and silencing KLF11 by an adeno-associated virus serotype 9 markedly improved cardiac dysfunction in sorafenib-treated mice. In summary, FSP1-mediated ferroptosis is a crucial mechanism for sorafenib-provoked cardiotoxicity, and targeting ferroptosis may be a promising therapeutic strategy for alleviating sorafenib-induced cardiac damage.


Assuntos
Cardiotoxicidade , Ferroptose , Proteínas Repressoras , Proteína A4 de Ligação a Cálcio da Família S100 , Sorafenibe , Animais , Humanos , Masculino , Camundongos , Cardiotoxicidade/metabolismo , Cardiotoxicidade/etiologia , Ferroptose/efeitos dos fármacos , Camundongos Endogâmicos C57BL , Miócitos Cardíacos/metabolismo , Miócitos Cardíacos/efeitos dos fármacos , Proteínas Repressoras/metabolismo , Proteínas Repressoras/genética , Proteína A4 de Ligação a Cálcio da Família S100/metabolismo , Proteína A4 de Ligação a Cálcio da Família S100/genética , Sorafenibe/efeitos adversos
10.
Ear Nose Throat J ; : 1455613241249270, 2024 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-38717053

RESUMO

Objective: Laryngeal neuroendocrine neoplasms (LNEN) are rare, and there have been previous uncertainties regarding their classification and treatment modalities. This article aims to share our treatment experience, elucidate changes in LNEN classification, and discuss the treatment implications of different types and stages. Methods: A retrospective analysis was conducted on 11 cases of LNEN treated through surgical intervention at the Department of Otolaryngology, Qilu Hospital of Shandong University, Qingdao, from January 2014 to November 2023. Among the 11 cases, there were 9 males and 2 females, with ages ranging from 61 to 77 years. Pathological classifications included neuroendocrine tumors (NET) G1 (1 case), G2 (2 cases), G3 (5 cases), small-cell neuroendocrine carcinoma (2 cases), and large-cell neuroendocrine carcinoma (1 case). The follow-up period ranged from 1 to 115 months. Results: Treatment modalities varied among the cases: 5 patients underwent transoral laser microsurgery (TLM) without neck dissection, 1 patient underwent TLM with unilateral neck lymph node dissection, 1 patient underwent open partial supraglottic laryngectomy (OPSL) with ipsilateral neck lymph node dissection, and 4 patients underwent OPSL with bilateral neck lymph node dissection. Among the 11 patients, 4 died, with 2 succumbing to distant metastasis, 1 to local recurrence, and 1 to other diseases. Conclusion: The prognosis of LNEN is closely associated with the latest pathological classification and TNM staging. For a more detailed and specific clinical staging, further research involving multicenter large-scale data is needed.

11.
J Hypertens ; 2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38780161

RESUMO

OBJECTIVES: Potassium supplementation reduces blood pressure and the occurrence of cardiovascular diseases, with K+-induced natriuresis playing a potential key role in this process. However, whether these beneficial effects occur in diabetes remains unknown. METHODS: In this study, we examined the impact of high-K+ intake on renal Na+/K+ transport by determining the expression of major apical Na+ transporters, diuretics responses (as a proxy for specific Na+ transporter function), urinary Na+/K+ excretion, and plasma Na+/K+ concentrations in db/db mice, a model of type 2 diabetes mellitus. RESULTS: Although db/m mice exhibited increased fractional excretion of sodium (FENa) and fractional excretion of potassium (FEK) under high-K+ intake, these responses were largely blunted in db/db mice, suggesting impaired K+-induced natriuresis and kaliuresis in diabetes. Consequently, high-K+ intake increased plasma K+ levels in db/db mice, which could be attributed to the abnormal activity of sodium-hydrogen exchanger 3 (NHE3), sodium-chloride cotransporter (NCC), and epithelial Na+ channel (ENaC), as high-K+ intake could not effectively decrease NHE3 and NCC and increase ENaC expression and activity in the diabetic group. Inhibition of NCC by hydrochlorothiazide could correct the hyperkalemia in db/db mice fed a high-K+ diet, indicating a key role for NCC in K+-loaded diabetic mice. Treatment with metformin enhanced urinary Na+/K+ excretion and normalized plasma K+ levels in db/db mice with a high-K+ diet, at least partially, by suppressing NCC activity. CONCLUSION: Collectively, the impaired K+-induced natriuresis in diabetic mice under high-K+ intake may be primarily attributed to impaired NCC-mediated renal K+ excretion, despite the role of NHE3.

12.
J Immunother Cancer ; 12(4)2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38580335

RESUMO

BACKGROUND: Ovarian cancer is the most lethal gynecological malignancy, with limited treatment options after failure of standard therapies. Despite the potential of poly(ADP-ribose) polymerase inhibitors in treating DNA damage response (DDR)-deficient ovarian cancer, the development of resistance and immunosuppression limit their efficacy, necessitating alternative therapeutic strategies. Inhibitors of poly(ADP-ribose) glycohydrolase (PARG) represent a novel class of inhibitors that are currently being assessed in preclinical and clinical studies for cancer treatment. METHODS: By using a PARG small-molecule inhibitor, COH34, and a cell-penetrating antibody targeting the PARG's catalytic domain, we investigated the effects of PARG inhibition on signal transducer and activator of transcription 3 (STAT3) in OVCAR8, PEO1, and Brca1-null ID8 ovarian cancer cell lines, as well as in immune cells. We examined PARG inhibition-induced effects on STAT3 phosphorylation, nuclear localization, target gene expression, and antitumor immune responses in vitro, in patient-derived tumor organoids, and in an immunocompetent Brca1-null ID8 ovarian mouse tumor model that mirrors DDR-deficient human high-grade serous ovarian cancer. We also tested the effects of overexpressing a constitutively activated STAT3 mutant on COH34-induced tumor cell growth inhibition. RESULTS: Our findings show that PARG inhibition downregulates STAT3 activity through dephosphorylation in ovarian cancer cells. Importantly, overexpression of a constitutively activated STAT3 mutant in tumor cells attenuates PARG inhibitor-induced growth inhibition. Additionally, PARG inhibition reduces STAT3 phosphorylation in immune cells, leading to the activation of antitumor immune responses, shown in immune cells cocultured with ovarian cancer patient tumor-derived organoids and in immune-competent mice-bearing mouse ovarian tumors. CONCLUSIONS: We have identified a novel antitumor mechanism underlying PARG inhibition beyond its primary antitumor effects through blocking DDR in ovarian cancer. Furthermore, targeting PARG activates antitumor immune responses, thereby potentially increasing response rates to immunotherapy in patients with ovarian cancer.


Assuntos
Glicosídeo Hidrolases , Neoplasias Ovarianas , Fator de Transcrição STAT3 , Animais , Feminino , Humanos , Camundongos , Linhagem Celular , Imunidade , Neoplasias Ovarianas/tratamento farmacológico , Inibidores de Poli(ADP-Ribose) Polimerases/farmacologia , Inibidores de Poli(ADP-Ribose) Polimerases/uso terapêutico , Fator de Transcrição STAT3/efeitos dos fármacos , Fator de Transcrição STAT3/metabolismo , Glicosídeo Hidrolases/antagonistas & inibidores , Glicosídeo Hidrolases/metabolismo
13.
Medicine (Baltimore) ; 103(16): e37737, 2024 Apr 19.
Artigo em Inglês | MEDLINE | ID: mdl-38640314

RESUMO

To construct an early clinical prediction model for AVF dysfunction in patients undergoing Maintenance Hemodialysis (MHD) and perform internal and external verifications. We retrospectively examined clinical data from 150 patients diagnosed with MHD at Hefei Third People's Hospital from January 2014 to June 2023. Depending on arteriovenous fistula (AVF) functionality, patients were categorized into dysfunctional (n = 62) and functional (n = 88) cohorts. Using the least absolute shrinkage and selection operator(LASSO) regression model, variables potentially influencing AVF functionality were filtered using selected variables that underwent multifactorial logistic regression analysis. The Nomogram model was constructed using the R software, and the Area Under Curve(AUC) value was calculated. The model's accuracy was appraised through the calibration curve and Hosmer-Lemeshow test, with the model undergoing internal validation using the bootstrap method. There were 11 factors exhibiting differences between the group of patients with AVF dysfunction and the group with normal AVF function, including age, sex, course of renal failure, diabetes, hyperlipidemia, Platelet count (PLT), Calcium (Ca), Phosphorus, D-dimer (D-D), Fibrinogen (Fib), and Anastomotic width. These identified factors are included as candidate predictive variables in the LASSO regression analysis. LASSO regression identified age, sex, diabetes, hyperlipidemia, anastomotic diameter, blood phosphorus, and serum D-D levels as 7 predictive factors. Unconditional binary logistic regression analysis revealed that advanced age (OR = 4.358, 95% CI: 1.454-13.062), diabetes (OR = 4.158, 95% CI: 1.243-13.907), hyperlipidemia (OR = 3.651, 95% CI: 1.066-12.499), D-D (OR = 1.311, 95% CI: 1.063-1.616), and hyperphosphatemia (OR = 4.986, 95% CI: 2.513-9.892) emerged as independent risk factors for AVF dysfunction in MHD patients. The AUC of the predictive model was 0.934 (95% CI: 0.897-0.971). The Hosmer-Lemeshow test showed high consistency between the model's predictive results and actual clinical observations (χ2 = 1.553, P = .092). Internal validation revealed an AUC of 0.911 (95% CI: 0.866-0.956), with the Calibration calibration curve nearing the ideal curve. Advanced age, coexisting diabetes, hyperlipidemia, blood D-D levels, and hyperphosphatemia are independent risk factors for AVF dysfunction in patients undergoing MHD.


Assuntos
Fístula Arteriovenosa , Diabetes Mellitus , Hiperlipidemias , Hiperfosfatemia , Humanos , Modelos Estatísticos , Prognóstico , Estudos Retrospectivos , Nomogramas , Fósforo
14.
Food Chem ; 451: 139268, 2024 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-38663247

RESUMO

Calcium-chelating peptides were found in Pacific cod bone, but their binding structure and properties have not been elucidated. Novel calcium-binding peptides were isolated by hydroxyapatite affinity chromatography (HAC), and their binding structure and properties were investigated by isothermal titration calorimetry (ITC), multispectral techniques, and mass spectrometry. Based on multiple purifications, the calcium binding capacity (CBC) of Pacific cod bone peptides (PBPs) was increased from 1.71 ± 0.15 µg/mg to 7.94 ± 1.56 µg/mg. Peptides with a molecular weight of 1-2 kDa are closely correlated with CBC. After binding to calcium, the secondary structure of peptides transitioned from random coil to ß-sheet, resulting in a loose and porous microstructure. Hydrogen bonds, electrostatic interaction, and hydrophobic interaction contribute to the formation of peptide­calcium complexes. The F21 contained 42 peptides, with repeated "GE" motif. Differential structure analysis provides a theoretical basis for the targeted preparation of high CBC peptides.


Assuntos
Osso e Ossos , Cálcio , Durapatita , Proteínas de Peixes , Peptídeos , Animais , Durapatita/química , Osso e Ossos/química , Cálcio/química , Proteínas de Peixes/química , Peptídeos/química , Peptídeos/isolamento & purificação , Cromatografia de Afinidade , Proteínas de Ligação ao Cálcio/química , Proteínas de Ligação ao Cálcio/metabolismo , Proteínas de Ligação ao Cálcio/isolamento & purificação , Ligação Proteica , Sequência de Aminoácidos , Gadiformes , Estrutura Secundária de Proteína
16.
J Genet Couns ; 2024 Feb 09.
Artigo em Inglês | MEDLINE | ID: mdl-38337157

RESUMO

Providing welcoming, inclusive, and culturally competent care is essential for genetic counselors (GCs) to serve the needs of all patients, including transgender and nonbinary (TGNB) individuals. Inclusive language creates welcoming healthcare spaces and improves health outcomes for TGNB individuals. Training on gender-affirming healthcare can increase knowledge, comfort, and self-efficacy working with TGNB patients. Using a mixed-method survey, this study assessed 65 GCs' gender-inclusive communication practices and elucidated reasons for discomfort using language to determine how language builds trust and fosters patient-provider relationships, ascertain differences between specialties, and identify potential gaps in education and professional development. This study found that approximately one-third of GCs are comfortable using gender-inclusive language and just over half regularly use it with patients. Most GCs do not share their pronouns or ask patients theirs, which was not correlated with comfort levels or frequency of using gender-inclusive language. There were no significant differences based on specialty. Thematic analysis of open responses revealed GCs used gendered language to promote shared language and for clarity, some mentioning sex assigned at birth was relevant for risk assessment. Most felt the impact of gendered language depended on the patient's perspective. Twenty-five percent noted gendered language was familiar for most patients and 40% recognized negative impacts on TGNB individuals. Most GCs desired more gender-inclusivity training even though >95% had some type previously. Those who had gender-inclusivity training in their genetic counseling program were more comfortable using gender-inclusive language and were more likely to share their pronouns with patients. This study adds to the growing body of literature demonstrating GCs' desire for more gender-inclusivity education and highlights the potential importance of having this education integrated into genetic counseling training programs. GCs should continue to incorporate gender-inclusive language into their practice in concordance with the tenants of the Reciprocal Engagement Model.

17.
Int J Biol Macromol ; 263(Pt 1): 130149, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38365161

RESUMO

Pancreatic cancer is the most fatal malignancy worldwide. Once diagnosed, most patients are already at an advanced stage because of their highly heterogeneous, drug-resistant, and metastatic nature and the lack of effective diagnostic markers. Recently, the study of proliferation, metastasis, and drug resistance mechanisms in pancreatic cancer and the search for useful diagnostic markers have posed significant challenges to the scientific community. Exosomes carry various biomolecules (DNA, non-coding RNAs (ncRNAs), proteins, and lipids) that mediate communication between tumors and other cells. ncRNAs can be transported through exosomes to numerous relevant receptor cells and regulate local epithelial-mesenchymal transition (EMT) in tumor tissue, proliferation, drug resistance, and the establishment of pre-metastatic ecological niches in distant organs. In summary, exosomal ncRNAs promote tumor cell proliferation, invasion, and metastasis through multiple EMT, immunosuppression, angiogenesis, and extracellular matrix remodeling pathways. Moreover, we discuss the significant therapeutic significance of exosomal ncRNAs as PC biomarkers.


Assuntos
Neoplasias Pancreáticas , RNA não Traduzido , Humanos , RNA não Traduzido/genética , Neoplasias Pancreáticas/diagnóstico , Neoplasias Pancreáticas/genética , Neoplasias Pancreáticas/terapia
18.
Hum Immunol ; 85(2): 110765, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38369442

RESUMO

Numerous cardiovascular disorders have atherosclerosis as their pathological underpinning. Numerous studies have demonstrated that, with the aid of pattern recognition receptors, cytokines, and immunoglobulins, innate immunity, represented by monocytes/macrophages, and adaptive immunity, primarily T/B cells, play a critical role in controlling inflammation and abnormal lipid metabolism in atherosclerosis. Additionally, the finding of numerous complement components in atherosclerotic plaques suggests yet again how heavily the immune system controls atherosclerosis. Therefore, it is essential to have a thorough grasp of how the immune system contributes to atherosclerosis. The specific molecular mechanisms involved in the activation of immune cells and immune molecules in atherosclerosis, the controversy surrounding some immune cells in atherosclerosis, and the limitations of extrapolating from relevant animal models to humans were all carefully reviewed in this review from the three perspectives of innate immunity, adaptive immunity, and complement system. This could provide fresh possibilities for atherosclerosis research and treatment in the future.


Assuntos
Aterosclerose , Animais , Humanos , Imunidade Inata , Imunidade Adaptativa , Inflamação , Leucócitos/patologia
19.
Artigo em Chinês | MEDLINE | ID: mdl-38297874

RESUMO

To explore the clinical diagnosis and treatment experience of isolated fibrotic tumor (SFT) occurring in the larynx, hypopharynx and esophageal inlet with a wide range.The patient, admitted to the Department of Otolaryngology-Head and Neck Surgery of Tangdu Hospital of Air Force Medical University was a female aged at 78 years, who was diagnosed with SFT primarily occured at laryngeal, hypopharynx and esophageal entrance. The clinical data, surgical methods, histopathology characteristics of the patient were analyzed respectively. It's proved that a tumor sized about 3.8 cm×2.8 cm×2.0 cm with slippy surface was found at the entrance of the laryngeal, hypopharynx and esophageal entrance, covering the laryngeal vestibule, glottis and right piriform fossa, which was completely resected by transoral robotic surgery. The postoperative pathological diagnosis was SFT. The patient recovered well after surgery and showed no recurrence within 16-month follow-up. SFT occurring in the larynx, hypopharynx, and esophageal inlet is very rare, and transoral da Vinci robotic surgical resection of the tumor in this area is feasible, and has the advantages of clear field of vision, less bleeding, less trauma, fewer complications, and quicker postoperative recovery.


Assuntos
Neoplasias Laríngeas , Procedimentos Cirúrgicos Robóticos , Tumores Fibrosos Solitários , Feminino , Humanos , Esôfago/patologia , Hipofaringe/cirurgia , Neoplasias Laríngeas/cirurgia , Procedimentos Cirúrgicos Robóticos/métodos , Idoso
20.
World J Gastroenterol ; 30(5): 471-484, 2024 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-38414587

RESUMO

BACKGROUND: Primary sclerosing cholangitis (PSC) is characterized by chronic inflammation and it predisposes to cholangiocarcinoma due to lack of effective treatment options. Recombinant adeno-associated virus (rAAV) provides a promising platform for gene therapy on such kinds of diseases. A microRNA (miRNA) let-7a has been reported to be associated with the progress of PSC but the potential therapeutic implication of inhibition of let-7a on PSC has not been evaluated. AIM: To investigate the therapeutic effects of inhibition of a miRNA let-7a transferred by recombinant adeno-associated virus 8 (rAAV8) on a xenobiotic-induced mouse model of sclerosing cholangitis. METHODS: A xenobiotic-induced mouse model of sclerosing cholangitis was induced by 0.1% 3,5-Diethoxycarbonyl-1,4-Dihydrocollidine (DDC) feeding for 2 wk or 6 wk. A single dose of rAAV8-mediated anti-let-7a-5p sponges or scramble control was injected in vivo into mice onset of DDC feeding. Upon sacrifice, the liver and the serum were collected from each mouse. The hepatobiliary injuries, hepatic inflammation and fibrosis were evaluated. The targets of let-7a-5p and downstream molecule NF-κB were detected using Western blot. RESULTS: rAAV8-mediated anti-let-7a-5p sponges can depress the expression of let-7a-5p in mice after DDC feeding for 2 wk or 6 wk. The reduced expression of let-7a-5p can alleviate hepato-biliary injuries indicated by serum markers, and prevent the proliferation of cholangiocytes and biliary fibrosis. Furthermore, inhibition of let-7a mediated by rAAV8 can increase the expression of potential target molecules such as suppressor of cytokine signaling 1 and Dectin1, which consequently inhibit of NF-κB-mediated hepatic inflammation. CONCLUSION: Our study demonstrates that a rAAV8 vector designed for liver-specific inhibition of let-7a-5p can potently ameliorate symptoms in a xenobiotic-induced mouse model of sclerosing cholangitis, which provides a possible clinical translation of PSC of human.


Assuntos
Colangite Esclerosante , MicroRNAs , Humanos , Camundongos , Animais , Colangite Esclerosante/induzido quimicamente , Colangite Esclerosante/genética , Colangite Esclerosante/terapia , MicroRNAs/genética , Dependovirus/genética , Cirrose Hepática/patologia , NF-kappa B , Xenobióticos/efeitos adversos , Fibrose , Modelos Animais de Doenças , Inflamação
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