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1.
Sci Immunol ; 9(97): eadn6509, 2024 Jul 19.
Artigo em Inglês | MEDLINE | ID: mdl-39028827

RESUMO

Most patients treated with US Food and Drug Administration (FDA)-approved chimeric antigen receptor (CAR) T cells eventually experience disease progression. Furthermore, CAR T cells have not been curative against solid cancers and several hematological malignancies such as T cell lymphomas, which have very poor prognoses. One of the main barriers to the clinical success of adoptive T cell immunotherapies is CAR T cell dysfunction and lack of expansion and/or persistence after infusion. In this study, we found that CD5 inhibits CAR T cell activation and that knockout (KO) of CD5 using CRISPR-Cas9 enhances the antitumor effect of CAR T cells in multiple hematological and solid cancer models. Mechanistically, CD5 KO drives increased T cell effector function with enhanced cytotoxicity, in vivo expansion, and persistence, without apparent toxicity in preclinical models. These findings indicate that CD5 is a critical inhibitor of T cell function and a potential clinical target for enhancing T cell therapies.


Assuntos
Antígenos CD5 , Imunoterapia Adotiva , Linfócitos T , Animais , Imunoterapia Adotiva/métodos , Antígenos CD5/imunologia , Camundongos , Humanos , Linfócitos T/imunologia , Linfócitos T/transplante , Receptores de Antígenos Quiméricos/imunologia , Receptores de Antígenos Quiméricos/genética , Linhagem Celular Tumoral , Sistemas CRISPR-Cas , Feminino
2.
Int J Oncol ; 65(3)2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39054950

RESUMO

Globally, colorectal cancer (CRC) is the third most common type of cancer. CRC has no apparent symptoms in the early stages of disease, and most patients receive a confirmed diagnosis in the middle or late disease stages. The incidence of CRC continues to increase, and the affected population tends to be younger. Therefore, determining how to achieve an early CRC diagnosis and treatment has become a top priority for prolonging patient survival. Myeloid­derived suppressor cells (MDSCs) are a group of bone marrow­derived immuno­negative regulatory cells that are divided into two subpopulations, polymorphonuclear­MDSCs and monocytic­MDSCs, based on their phenotypic similarities to neutrophils and monocytes, respectively. These cells can inhibit the immune response and promote cancer cell metastasis in the tumour microenvironment (TME). A large aggregation of MDSCs in the TME is often a marker of cancer and a poor prognosis in inflammatory diseases of the intestine (such as colonic adenoma and ulcerative colitis). In the present review, the phenotypic classification of MDSCs in the CRC microenvironment are first discussed. Then, the amplification, role and metastatic mechanism of MDSCs in the CRC TME are described, focusing on genes, gene modifications, proteins and the intestinal microenvironment. Finally, the progress in CRC­targeted therapies that aim to modulate the quantity, function and structure of MDSCs are summarized in the hope of identifying potential screening markers for CRC and improving CRC prognosis and therapeutic options.


Assuntos
Neoplasias Colorretais , Células Supressoras Mieloides , Microambiente Tumoral , Humanos , Neoplasias Colorretais/imunologia , Neoplasias Colorretais/patologia , Neoplasias Colorretais/terapia , Células Supressoras Mieloides/imunologia , Células Supressoras Mieloides/metabolismo , Microambiente Tumoral/imunologia
3.
BMC Palliat Care ; 23(1): 150, 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38877477

RESUMO

BACKGROUND: Clinical evidence for the rapidity and effectiveness of fentanyl buccal soluble film (FBSF) in reducing pain intensity of breakthrough cancer pain (BTcP) remains inadequate. This study aimed to evaluate the efficacy of FBSF proportional to the around-the-clock (ATC) opioid regimens in rapidly relieving the intensity of BTcP episodes by determining the percentage of patients requiring further dose titration. METHODS: The study procedure included a dose-finding period followed by a 14-day observation period. Pain intensity was recorded with a Numeric Rating Scale (NRS) at onset and 5, 10, 15, and 30 min after FBSF self-administration. Meaningful pain relief was defined as the final NRS score ≤ 3. Satisfaction survey was conducted for each patient after treatment using the Global Satisfaction Scale. RESULTS: A total of 63 BTcP episodes occurred in 30 cancer patients. Only one patient required rescue medication at first BTcP episode and then achieved meaningful pain relief after titrating FBSF by 200 µg. Most BTcP episodes relieved within 10 min. Of 63 BTcP episodes, 30 (47.6%), 46 (73.0%), and 53 (84.1%) relieved within 5, 10, and 15 min after FBSF administration. Only grade 1/2 adverse events were reported, including somnolence, malaise, and dizziness. Of the 63 BTcP episodes, 82.6% were rated as excellent/good satisfaction with FBSF. CONCLUSION: FBSF can be administrated "on demand" by cancer patients at the onset of BTcP, providing rapid analgesia by achieving meaningful pain relief within 10 min. TRIAL REGISTRATION: This study was retrospectively registered 24 December, 2021 at Clinicaltrial.gov (NCT05209906): https://clinicaltrials.gov/study/NCT05209906 .


Assuntos
Analgésicos Opioides , Dor Irruptiva , Fentanila , Humanos , Fentanila/uso terapêutico , Fentanila/administração & dosagem , Feminino , Masculino , Dor Irruptiva/tratamento farmacológico , Dor Irruptiva/etiologia , Pessoa de Meia-Idade , Analgésicos Opioides/uso terapêutico , Analgésicos Opioides/administração & dosagem , Idoso , Administração Bucal , Adulto , Medição da Dor/métodos , Dor do Câncer/tratamento farmacológico , Manejo da Dor/métodos , Manejo da Dor/normas , Manejo da Dor/estatística & dados numéricos , Neoplasias/complicações , Neoplasias/tratamento farmacológico , Idoso de 80 Anos ou mais
4.
Mol Med ; 30(1): 86, 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38877399

RESUMO

BACKGROUND: Despite the advances of therapies, multiple myeloma (MM) remains an incurable hematological cancer that most patients experience relapse. Tumor angiogenesis is strongly correlated with cancer relapse. Human leukocyte antigen G (HLA-G) has been known as a molecule to suppress angiogenesis. We aimed to investigate whether soluble HLA-G (sHLA-G) was involved in the relapse of MM. METHODS: We first investigated the dynamics of serum sHLA-G, vascular endothelial growth factor (VEGF) and interleukin 6 (IL-6) in 57 successfully treated MM patients undergoing remission and relapse. The interactions among these angiogenesis-related targets (sHLA-G, VEGF and IL-6) were examined in vitro. Their expression at different oxygen concentrations was investigated using a xenograft animal model by intra-bone marrow and skin grafts with myeloma cells. RESULTS: We found that HLA-G protein degradation augmented angiogenesis. Soluble HLA-G directly inhibited vasculature formation in vitro. Mechanistically, HLA-G expression was regulated by hypoxia-inducible factor-1α (HIF-1α) in MM cells under hypoxia. We thus developed two mouse models of myeloma xenografts in intra-bone marrow (BM) and underneath the skin, and found a strong correlation between HLA-G and HIF-1α expressions in hypoxic BM, but not in oxygenated tissues. Yet when stimulated with IL-6, both HLA-G and HIF-1α could be targeted to ubiquitin-mediated degradation via PARKIN. CONCLUSION: These results highlight the importance of sHLA-G in angiogenesis at different phases of multiple myeloma. The experimental evidence that sHLA-G as an angiogenesis suppressor in MM may be useful for future development of novel therapies to prevent relapse.


Assuntos
Antígenos HLA-G , Interleucina-6 , Mieloma Múltiplo , Neovascularização Patológica , Mieloma Múltiplo/sangue , Mieloma Múltiplo/metabolismo , Mieloma Múltiplo/patologia , Humanos , Animais , Neovascularização Patológica/metabolismo , Antígenos HLA-G/sangue , Antígenos HLA-G/metabolismo , Camundongos , Interleucina-6/sangue , Interleucina-6/metabolismo , Masculino , Feminino , Fator A de Crescimento do Endotélio Vascular/metabolismo , Fator A de Crescimento do Endotélio Vascular/sangue , Pessoa de Meia-Idade , Linhagem Celular Tumoral , Subunidade alfa do Fator 1 Induzível por Hipóxia/metabolismo , Idoso , Modelos Animais de Doenças , Angiogênese
5.
Sci Rep ; 14(1): 12750, 2024 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-38830952

RESUMO

The current practice of restoring the anatomical structure in the treatment of pelvic floor dysfunction includes implantation of synthetic sling, which carries potential complications. This study aimed to develop biological substitutes to improve tissue function using scaffolds as a support to the host cells, through formation of new tissue. Human amniotic fluid stem cells (hAFSCs) were seeded on synthetic mesh-scaffold of AlloDerm Regenerative Tissue Matrix (RTM), Poly-DL-lactico-glycolic acid (PLGA) mesh (VICRYL) and Polydioxanone (PDS) meshes. In vitro study evaluates the metabolic activity of hAFSCs seeded mesh-scaffolds. In vivo study involving Sprague-Dawley rats was performed by assigning into 7 groups of sham control with fascia operation, AlloDerm implant, PDS implant, PLGA implant, AlloDerm harvest with hAFSC (AlloDerm-SC), PDS harvest with hAFSC(PDS-SC) and PLGS harvest with hAFSC (PGLA-SC). In vitro study reveals cell viability and proliferation of hAFSC on mesh scaffolds varies between meshes, with AlloDerm growing the fastest. The biomechanical properties of tissue-mesh-complex tension strength declined over time, showing highest tension strength on week-1, deteriorated similar to control group on week-12. All hAFSC-seeded mesh provides higher tension strength, compared to without. This study shed the potential of synthetic mesh as a scaffold for hAFSC for the surgical treatment of pelvic floor dysfunction.


Assuntos
Líquido Amniótico , Ratos Sprague-Dawley , Células-Tronco , Alicerces Teciduais , Animais , Alicerces Teciduais/química , Humanos , Líquido Amniótico/citologia , Ratos , Células-Tronco/citologia , Feminino , Procedimentos de Cirurgia Plástica/métodos , Engenharia Tecidual/métodos , Telas Cirúrgicas , Proliferação de Células , Diafragma da Pelve/cirurgia , Copolímero de Ácido Poliláctico e Ácido Poliglicólico/química
6.
J Clin Med ; 13(12)2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38930002

RESUMO

Background: Tissue adhesive has been widely used in ophthalmic surgery for various procedures, proving both effective and safe. However, no studies have compared the surgical efficacy of the tissue adhesive 2-octyl cyanoacrylate (SurgiSeal®) to that of traditional suture closure in Asian children undergoing surgery for lower lid epiblepharon. Methods: This is a single-center retrospective case-control study. Surgical correction for epiblepharon was performed on 22 patients from November 2019 to May 2023. A total of 20 patients who were followed up for at least 1 month were included for analysis. After standardized epiblepharon surgery, group A underwent wound closure with a subcuticular suture and 2-octyl cyanoacrylate, and group B underwent closure with a 6-O fast-absorbing surgical gut suture. Patients were followed up at 1, 4, and 12 weeks post-surgery. Results: A total of 10 patients (20 eyes) underwent skin closure with tissue adhesives (group A), and 10 patients (18 eyes) underwent wound closure using conventional suture material (group B). No significant differences in the sex ratio, mean age at operation, pre- and postoperative best-corrected visual acuity (BCVA), or average surgical time were observed between groups. Both groups exhibited improved postoperative BCVA, with symptom relief and a significant decrease in the severity of keratopathy after surgery. Neither recurrence nor complications were reported during follow-up. The aesthetic results were similar between groups, while caregivers of children in the tissue adhesive group expressed high satisfaction regarding the ease of postoperative care. Conclusions: Successful closure of lower lid epiblepharon surgery wounds in children can be performed using 2-octyl cyanoacrylate (SurgiSeal®). This method is simple, safe, and effective when compared to conventional sutures.

7.
Biology (Basel) ; 13(6)2024 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-38927264

RESUMO

Padina minor is a seaweed rich in polysaccharides often used in food, feed, fertilizers, and antibacterial drugs. This study is the first to evaluate the effect of feeding zebrafish with Padina minor extract on preventing and treating C. albicans infections. This study evaluated the growth, survival, and disease resistance effects of P. minor extract on zebrafish. The fish were divided into four groups: three groups treated with 1%, 5%, or 10% P. minor extract and one untreated group (c, control). Subsequently, we analyzed how the extract affected the immune function of zebrafish infected with C. albicans. Based on the lethal concentration (LC50) calculated in the first stage, 1% was used as the effective therapeutic concentration. The results showed that the growth rate of the 1% feed group was the best, and no significant difference in survival rates between the four groups was observed. Feeding with 1% P. minor extract downregulated the expression of key inflammatory genes like tumor necrosis factor-alpha (TNF-α), interleukin-1ß (IL-1ß), and IL-10, effectively preventing and treating C. albicans infections in zebrafish. This study is a preliminary evaluation of the therapeutic efficacy of P. minor extracts against C. albicans.

8.
BMC Cancer ; 24(1): 730, 2024 Jun 14.
Artigo em Inglês | MEDLINE | ID: mdl-38877437

RESUMO

BACKGROUND: Oral cavity squamous cell carcinoma (OCSCC) is the most common pathological type in oral tumors. This study intends to construct a novel prognostic nomogram model based on China populations for these resectable OCSCC patients, and then validate these nomograms. METHODS: A total of 607 postoperative patients with OCSCC diagnosed between June 2012 and June 2018 were obtained from two tertiary medical institutions in Xinxiang and Zhengzhou. Then, 70% of all the cases were randomly assigned to the training group and the rest to the validation group. The endpoint time was defined as overall survival (OS) and disease-free survival (DFS). The nomograms for predicting the 3-, and 5-year OS and DFS in postoperative OCSCC patients were established based on the independent prognostic factors, which were identified by the univariate analysis and multivariate analysis. A series of indexes were utilized to assess the performance and net benefit of these two newly constructed nomograms. Finally, the discrimination capability of OS and DFS was compared between the new risk stratification and the American Joint Committee on Cancer (AJCC) stage by Kaplan-Meier curves. RESULTS: 607 postoperative patients with OCSCC were selected and randomly assigned to the training cohort (n = 425) and validation cohort (n = 182). The nomograms for predicting OS and DFS in postoperative OCSCC patients had been established based on the independent prognostic factors. Moreover, dynamic nomograms were also established for more convenient clinical application. The C-index for predicting OS and DFS were 0.691, 0.674 in the training group, and 0.722, 0.680 in the validation group, respectively. Besides, the calibration curve displayed good consistency between the predicted survival probability and actual observations. Finally, the excellent performance of these two nomograms was verified by the NRI, IDI, and DCA curves in comparison to the AJCC stage system. CONCLUSION: The newly established and validated nomograms for predicting OS and DFS in postoperative patients with OCSCC perform well, which can be helpful for clinicians and contribute to clinical decision-making.


Assuntos
Neoplasias Bucais , Nomogramas , Humanos , Masculino , Feminino , Pessoa de Meia-Idade , China/epidemiologia , Neoplasias Bucais/cirurgia , Neoplasias Bucais/mortalidade , Neoplasias Bucais/patologia , Prognóstico , Idoso , Período Pós-Operatório , Adulto , Intervalo Livre de Doença , Estimativa de Kaplan-Meier , Carcinoma de Células Escamosas de Cabeça e Pescoço/cirurgia , Carcinoma de Células Escamosas de Cabeça e Pescoço/mortalidade , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologia , Carcinoma de Células Escamosas/cirurgia , Carcinoma de Células Escamosas/mortalidade , Carcinoma de Células Escamosas/patologia , Estadiamento de Neoplasias
9.
World Neurosurg ; 2024 Jun 12.
Artigo em Inglês | MEDLINE | ID: mdl-38871284

RESUMO

BACKGROUND: The fusion rate, clinical efficacy, and complications of minimally invasive fusion surgery and open fusion surgery in the treatment of lumbar degenerative disease are still unclear. METHODS: We conducted a literature search using PubMed, Embase, Cochrane Library, CNKI, and WANFANG databases. RESULTS: This study included 38 retrospective studies involving 3097 patients. Five intervention modalities were considered: unilateral biportal endoscopic-lumbar interbody fusion (UBE-LIF), percutaneous endoscopic-lumbar interbody fusion (PE-LIF), minimally invasive-transforaminal lumbar interbody fusion (MIS-TLIF), transforaminal lumbar interbody fusion (TLIF), and posterior lumbar interbody fusion (PLIF). Quality assessment indicated that each study met acceptable quality standards. PE-LIF demonstrated reduced low back pain (Odds Ratio = 0.50, Confidence Interval: 0.38-0.65) and lower complication rate (Odds Ratio = 0.46, Confidence Interval: 0.25-0.87) compared to PLIF. However, in indirect comparisons, PE-LIF showed the lowest fusion rates, with the ranking as follows: UBE-LIF (83.2%) > MIS-TLIF (59.6%) > TLIF (44.3%) > PLIF (39.8%) > PE-LIF (23.1%). With respect to low back pain relief, PE-LIF yielded the best results, with the order of relief as follows: PE-LIF (96.4%) > MIS-TLIF (64.8%) > UBE-LIF (62.6%) > TLIF (23.0%) > PLIF (3.2%). Global and local consistency tests showed satisfactory results, and heterogeneity tests indicated good stability. CONCLUSIONS: Compared to conventional open surgery, minimally invasive fusion surgery offered better scores for low back pain and Oswestry Disability Index, lower complication rates, reduced bleeding, and shorter hospital stays. However, minimally invasive fusion surgery did not show a significant advantage in terms of fusion rate and had a longer operative time.

10.
J Hazard Mater ; 475: 134911, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-38889457

RESUMO

1-Nitropyrene (1-NP) is a neurodevelopmental toxicant. This study was to evaluate the impact of exposure to 1-NP after weaning on anxiety-like behavior. Five-week-old mice were administered with 1-NP (0.1 or 1 mg/kg) daily for 4 weeks. Anxiety-like behaviour was measured using elevated-plus maze (EPM) and open field test (OFT). In EPM test, time spending in open arm and times entering open arm were reduced in 1-NP-treated mice. In OFT test, time spent in the center region and times entering the center region were diminished in 1-NP-treated mice. Prefrontal dendritic length and number of dendrite branches were decreased in 1-NP-treated mice. Prefrontal PSD95, an excitatory postsynaptic membrane protein, and gephyrin, an inhibitory postsynaptic membrane protein, were downregulated in 1-NP-treated mice. Further analysis showed that peripheral steroid hormones, including serum testosterone (T) and estradiol (E2), testicular T, and ovarian E2, were decreased in 1-NP-treated mice. Interestingly, T and E2 were diminished in 1-NP-treated prefrontal cortex. Prefrontal T and E2 synthases were diminished in 1-NP-treated mice. Mechanistically, GCN2-eIF2α, a critical pathway that regulates ribosomal protein translation, was activated in 1-NP-treated prefrontal cortex. These results indicate that exposure to 1-NP after weaning induces anxiety-like behaviour partially by inhibiting steroid hormone synthesis in prefrontal cortex.


Assuntos
Ansiedade , Córtex Pré-Frontal , Pirenos , Desmame , Animais , Córtex Pré-Frontal/efeitos dos fármacos , Córtex Pré-Frontal/metabolismo , Ansiedade/induzido quimicamente , Masculino , Pirenos/toxicidade , Feminino , Camundongos , Comportamento Animal/efeitos dos fármacos , Testosterona/sangue , Estradiol
11.
Yi Chuan ; 46(6): 490-501, 2024 Jun 20.
Artigo em Inglês | MEDLINE | ID: mdl-38886152

RESUMO

The JNK signaling pathway plays crucial roles in various physiological processes, including cell proliferation, differentiation, migration, apoptosis, and stress response. Dysregulation of this pathway is closely linked to the onset and progression of numerous major diseases, such as developmental defects and tumors. Identifying and characterizing novel components of the JNK signaling pathway to enhance and refine its network hold significant scientific and clinical importance for the prevention and treatment of associated cancers. This study utilized the model organism Drosophila and employed multidisciplinary approaches encompassing genetics, developmental biology, biochemistry, and molecular biology to investigate the interplay between Tip60 and the JNK signaling pathway, and elucidated its regulatory mechanisms. Our findings suggest that loss of Tip60 acetyltransferase activity results in JNK signaling pathway activation and subsequent induction of JNK-dependent apoptosis. Genetic epistasis analysis reveals that Tip60 acts downstream of JNK, paralleling with the transcription factor FOXO. The biochemical results confirm that Tip60 can bind to FOXO and acetylate it. Introduction of human Tip60 into Drosophila effectively mitigates apoptosis induced by JNK signaling activation, underscoring conserved regulatory role of Tip60 in the JNK signaling pathway from Drosophila to humans. This study further enhances our understanding of the regulatory network of the JNK signaling pathway. By revealing the role and mechanism of Tip60 in JNK-dependent apoptosis, it unveils new insights and potential therapeutic avenues for preventing and treating associated cancers.


Assuntos
Apoptose , Proteínas de Drosophila , Fatores de Transcrição Forkhead , Animais , Proteínas de Drosophila/metabolismo , Proteínas de Drosophila/genética , Fatores de Transcrição Forkhead/metabolismo , Fatores de Transcrição Forkhead/genética , Histona Acetiltransferases/metabolismo , Histona Acetiltransferases/genética , Drosophila/genética , Drosophila/metabolismo , Sistema de Sinalização das MAP Quinases , Humanos , Transdução de Sinais , Drosophila melanogaster/genética , Drosophila melanogaster/metabolismo , Proteínas Quinases JNK Ativadas por Mitógeno/metabolismo , Proteínas Quinases JNK Ativadas por Mitógeno/genética
12.
Am J Surg ; : 115778, 2024 May 23.
Artigo em Inglês | MEDLINE | ID: mdl-38811240

RESUMO

BACKGROUND: We aimed to develop a preoperative model to predict overall survival (OS) in patients with hepatoma undergoing liver resection (LR). METHODS: Patients who underwent LR for Barcelona Clinic Liver Cancer (BCLC) stage 0, A, or B hepatoma were enrolled. Tumor burden score (TBS) scores were determined using the following equation: TBS (Pinna et al., 2018) 2 = (largest tumor size [in cm])(Pinna et al., 2018) 2 â€‹+ â€‹(tumor number) (Pinna et al., 2018) 22. The cutoff values for radiographic TBS were based on our recently published paper: low, <2.6; medium, 2.6-7.9; high, >7.9. RESULTS: Multivariate analysis showed that radiographic TBS (low: referent; medium: HR â€‹= â€‹2.89; 95 â€‹% CI: 1.60-5.21; p â€‹< â€‹0.001; high, HR â€‹= â€‹7.60; 95 â€‹% CI: 3.80-15.2; p â€‹< â€‹0.001), AFP (<400 â€‹ng/mL: referent; ≧400 â€‹ng/mL: HR â€‹= â€‹1.67, 95 â€‹% CI: 1.11-2.52, p â€‹= â€‹0.014), and cirrhosis (absence: referent; presence: HR â€‹= â€‹1.88, 95 â€‹% CI: 1.30-2.72, p â€‹< â€‹0.001) were associated with OS. A simplified risk score was superior to BCLC system in concordance index (0.688 vs. 0.623). CONCLUSIONS: We have developed a preoperative model that performs better in predicting OS than the BCLC system.

13.
Anal Chem ; 96(21): 8730-8739, 2024 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-38743814

RESUMO

Adenosine-to-inosine (A-to-I) editing and N6-methyladenosine (m6A) modifications are pivotal RNA modifications with widespread functional significance in physiological and pathological processes. Although significant effort has been dedicated to developing methodologies for identifying and quantifying these modifications, traditional approaches have often focused on each modification independently, neglecting the potential co-occurrence of A-to-I editing and m6A modifications at the same adenosine residues. This limitation has constrained our understanding of the intricate regulatory mechanisms governing RNA function and the interplay between different types of RNA modifications. To address this gap, we introduced an innovative technique called deamination-assisted reverse transcription stalling (DARTS), specifically designed for the simultaneous quantification of A-to-I editing and m6A at the same RNA sites. DARTS leverages the selective deamination activity of the engineered TadA-TadA8e protein, which converts adenosine residues to inosine, in combination with the unique property of Bst 2.0 DNA polymerase, which stalls when encountering inosine during reverse transcription. This approach enables the accurate quantification of A-to-I editing, m6A, and unmodified adenosine at identical RNA sites. The DARTS method is remarkable for its ability to directly quantify two distinct types of RNA modifications simultaneously, a capability that has remained largely unexplored in the field of RNA biology. By facilitating a comprehensive analysis of the co-occurrence and interaction between A-to-I editing and m6A modifications, DARTS opens new avenues for exploring the complex regulatory networks modulated by different RNA modifications.


Assuntos
Adenosina , Inosina , Edição de RNA , Adenosina/análogos & derivados , Adenosina/análise , Adenosina/metabolismo , Inosina/metabolismo , Inosina/análogos & derivados , Inosina/química , Desaminação , RNA/metabolismo , RNA/genética , RNA/análise , Transcrição Reversa , Humanos
14.
Eur J Radiol ; 176: 111502, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38759544

RESUMO

OBJECTIVE: To summary radiating blood flow signals and evaluate their diagnostic value in differentiating benign and malignant thyroid nodules. MATERIALS AND METHODS: We retrospectively recruited consecutive patients undergoing US at 4 hospitals from 2018 to 2022. In a training dataset, the correlations of US features with malignant thyroid nodules were assessed by multivariate logistic analysis. Multivariate logistic regression models involving the ACR TI-RADS score, radiating blood flow signals and their combination were built and validated internally and externally. The AUC with 95% asymptotic normal confidence interval as well as sensitivity, specificity, negative predictive value (NPV), and positive predictive value (PPV) with 95% exact binomial confidence intervals were calculated. RESULTS: Among 2475 patients (1818 women, age: 42.47 ± 11.57; 657 men, age: 42.16 ± 11.69), there were 3187 nodules (2342 malignant nodules and 845 benign nodules). Radiating blood flow signals were an independent risk factor for diagnosing thyroid carcinoma. In the training set, the AUC of the model using the combination of radiating blood flow signals and the ACR TI-RADS score (0.95 95 % CI: [0.94, 0.97]; P < 0.001) was significantly higher than that of the ACR TI-RADS model (0.91 [0.89, 0.93]). In the two internal validation sets and the external validation set, the AUCs of the combination model were 0.97 [0.96, 0.98], 0.92 [0.88, 0.96], and 0.91 [0.86, 0.95], respectively, and were all significantly higher than that of the ACR TI-RADS score (0.92 [0.90, 0.95], 0.86 [0.81, 0.91], 0.84 [0.79, 0.89]; P < 0.001). CONCLUSION: Radiating blood flow is a new US feature of thyroid carcinomas that can significantly improve the diagnostic performance vs. the ACR TI-RADS score.


Assuntos
Sensibilidade e Especificidade , Neoplasias da Glândula Tireoide , Ultrassonografia , Humanos , Masculino , Feminino , Neoplasias da Glândula Tireoide/diagnóstico por imagem , Adulto , Estudos Retrospectivos , Ultrassonografia/métodos , Diagnóstico Diferencial , Pessoa de Meia-Idade , Nódulo da Glândula Tireoide/diagnóstico por imagem , Nódulo da Glândula Tireoide/irrigação sanguínea
15.
Redox Biol ; 73: 103179, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38733909

RESUMO

Increasing evidences demonstrate that environmental stressors are important inducers of acute kidney injury (AKI). This study aimed to investigate the impact of exposure to Cd, an environmental stressor, on renal cell ferroptosis. Transcriptomics analyses showed that arachidonic acid (ARA) metabolic pathway was disrupted in Cd-exposed mouse kidneys. Targeted metabolomics showed that renal oxidized ARA metabolites were increased in Cd-exposed mice. Renal 4-HNE, MDA, and ACSL4, were upregulated in Cd-exposed mouse kidneys. Consistent with animal experiments, the in vitro experiments showed that mitochondrial oxidized lipids were elevated in Cd-exposed HK-2 cells. Ultrastructure showed mitochondrial membrane rupture in Cd-exposed mouse kidneys. Mitochondrial cristae were accordingly reduced in Cd-exposed mouse kidneys. Mitochondrial SIRT3, an NAD+-dependent deacetylase that regulates mitochondrial protein stability, was reduced in Cd-exposed mouse kidneys. Subsequently, mitochondrial GPX4 acetylation was elevated and mitochondrial GPX4 protein was reduced in Cd-exposed mouse kidneys. Interestingly, Cd-induced mitochondrial GPX4 acetylation and renal cell ferroptosis were exacerbated in Sirt3-/- mice. Conversely, Cd-induced mitochondrial oxidized lipids were attenuated in nicotinamide mononucleotide (NMN)-pretreated HK-2 cells. Moreover, Cd-evoked mitochondrial GPX4 acetylation and renal cell ferroptosis were alleviated in NMN-pretreated mouse kidneys. These results suggest that mitochondrial GPX4 acetylation, probably caused by SIRT3 downregulation, is involved in Cd-evoked renal cell ferroptosis.


Assuntos
Cádmio , Ferroptose , Mitocôndrias , Fosfolipídeo Hidroperóxido Glutationa Peroxidase , Sirtuína 3 , Animais , Ferroptose/efeitos dos fármacos , Camundongos , Cádmio/toxicidade , Cádmio/efeitos adversos , Sirtuína 3/metabolismo , Sirtuína 3/genética , Fosfolipídeo Hidroperóxido Glutationa Peroxidase/metabolismo , Fosfolipídeo Hidroperóxido Glutationa Peroxidase/genética , Mitocôndrias/metabolismo , Mitocôndrias/efeitos dos fármacos , Acetilação , Humanos , Rim/metabolismo , Rim/efeitos dos fármacos , Rim/patologia , Injúria Renal Aguda/metabolismo , Injúria Renal Aguda/induzido quimicamente , Injúria Renal Aguda/patologia , Linhagem Celular , Masculino , Camundongos Knockout , Coenzima A Ligases
16.
Updates Surg ; 76(3): 879-887, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38582796

RESUMO

Numerous studies have compared outcomes of liver resection (LR) of patients with non-alcoholic fatty liver disease (NAFLD)-related hepatocellular carcinoma (HCC) to those of patients with non-NAFLD-related HCC. However, results have been inconsistent. We aim to clarify this issue. We enrolled 801 patients with hepatitis B virus (HBV)-related HCC, 433 patients with hepatitis C virus (HCV)-related HCC, and 128 patients with NAFLD-related HCC undergoing LR. Overall survival (OS) and disease-free survival (DFS) of patients with different etiologies of chronic liver disease was compared using the Kaplan-Meier estimator and log-rank test after propensity score matching (PSM). After PSM, 83 patients remained in each group. The groups did not differ significantly in age, sex, the proportion of patients with pathological American Joint Committee on Cancer stage 1, tumor size > 50 mm, receipt of major resection, alpha-fetoprotein (AFP) ≥ 20 ng/ml, presence of cirrhosis, model for end-stage liver disease (MELD) score, and American Society of Anesthesiologists (ASA) classification. The five-year OS of patients with HBV-, HCV-, and NAFLD-related HCC was 78%, 75%, and 78%, respectively (p = 0.789). The five-year DFS of the HBV, HCV, and NAFLD groups was 60%, 45%, and 54%, respectively (p = 0.159). Perioperative morbidity was noted in 17 (20.5%) in the HBV group, 22 (26.5%) in the HCV group, and 15 (18.1%) in the NAFLD group (p = 0.398). The five-year OS, DFS, and perioperative morbidity of patients undergoing LR for NAFLD-related HCC and those for viral hepatitis-related HCC was similar.


Assuntos
Carcinoma Hepatocelular , Hepatectomia , Neoplasias Hepáticas , Hepatopatia Gordurosa não Alcoólica , Humanos , Carcinoma Hepatocelular/cirurgia , Carcinoma Hepatocelular/mortalidade , Carcinoma Hepatocelular/virologia , Neoplasias Hepáticas/cirurgia , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/virologia , Hepatopatia Gordurosa não Alcoólica/complicações , Hepatopatia Gordurosa não Alcoólica/mortalidade , Hepatopatia Gordurosa não Alcoólica/cirurgia , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Resultado do Tratamento , Taxa de Sobrevida , Pontuação de Propensão , Hepatite B/complicações , Intervalo Livre de Doença , Estudos Retrospectivos , Hepatite C/complicações , Hepatite C/mortalidade
17.
Neuroscience ; 547: 98-107, 2024 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-38657727

RESUMO

OBJECTIVE: Postoperative pain remains one of the most common complaints after surgery, and appropriate treatments are limited. METHODS: We therefore investigated the effect of the anti-nociceptive properties of magnesium sulfate (MgSO4), an N-methyl-D-aspartate (NMDA) receptor antagonist, on incision-induced postoperative pain and peripheral and central nervous system inflammation. RESULTS: We found that local MgSO4 administration dose-dependently increases paw withdrawal latency, indicating reduced peripheral postoperative pain. Furthermore, MgSO4 inhibited the expression of interleukin-1ß (IL-1ß) and inducible nitric oxide synthase (iNOS) and phosphorylation of the NMDA receptor NR1 subunit in injured paw tissue and significantly attenuated microglial and astrocytic activation in the ipsilateral lumbar spinal cord dorsal horn. CONCLUSION: Locally administered MgSO4 has potential for development as an adjunctive therapy for preventing central nociceptive sensitization.


Assuntos
Inflamação , Sulfato de Magnésio , Nociceptividade , Dor Pós-Operatória , Ratos Sprague-Dawley , Animais , Sulfato de Magnésio/farmacologia , Sulfato de Magnésio/administração & dosagem , Masculino , Nociceptividade/efeitos dos fármacos , Dor Pós-Operatória/tratamento farmacológico , Dor Pós-Operatória/metabolismo , Inflamação/tratamento farmacológico , Inflamação/metabolismo , Ratos , Modelos Animais de Doenças , Medula Espinal/efeitos dos fármacos , Medula Espinal/metabolismo , Receptores de N-Metil-D-Aspartato/metabolismo , Receptores de N-Metil-D-Aspartato/antagonistas & inibidores , Sensibilização do Sistema Nervoso Central/efeitos dos fármacos , Sensibilização do Sistema Nervoso Central/fisiologia , Microglia/efeitos dos fármacos , Microglia/metabolismo , Analgésicos/farmacologia , Analgésicos/administração & dosagem , Interleucina-1beta/metabolismo , Óxido Nítrico Sintase Tipo II/metabolismo
18.
Artigo em Inglês | MEDLINE | ID: mdl-38616762

RESUMO

BACKGROUND: Osteoarthritis (OA) is a chronic progressive joint ailment that is largely predominant worldwide. However, it typically gets worse over time, occurs more frequently, and becomes more crippling. OBJECTIVES: Syringic acid (SA) is a well-known phenolic compound reported to suppress inflammation, cell proliferation, and apoptosis of various cancer cells. Since the role of SA in OA remains unknown, there is a need to hypothesize the anti-inflammatory activities of SA on IL- 1ß-induced ATDC5 chondrocyte­like cells and to elucidate its protective action against OA. METHODS: The cytotoxicity, inflammatory mediators, mRNA expression of MMPs, ADAMTS, COX-2, and Akt/NF-κB protein expression of SA activity on ATDC5 cells were examined through CCK-8 assay, ELISA, RT-qPCR, and western blot. It was found that SA (10, 20, and 30 µM) did not show any inhibitory effects on the viability of the ATDC5 cells in a concentrationdependent manner. RESULTS: SA markedly reduced the inflammatory mediators, cytokines, PGE2, MMPs, COX-2, and ADAMTS in a concentration-dependent manner. Likewise, SA expressively attenuated IL- 1ß-stimulated Akt phosphorylation and NF-κB activation as well as IL-1ß- induced ATDC5 chondrocytes. CONCLUSION: This study revealed that SA is a novel candidate applicable for the treatment of OA.

19.
World J Gastrointest Oncol ; 16(3): 787-797, 2024 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-38577466

RESUMO

BACKGROUND: Patatin like phospholipase domain containing 8 (PNPLA8) has been shown to play a significant role in various cancer entities. Previous studies have focused on its roles as an antioxidant and in lipid peroxidation. However, the role of PNPLA8 in colorectal cancer (CRC) progression is unclear. AIM: To explore the prognostic effects of PNPLA8 expression in CRC. METHODS: A retrospective cohort containing 751 consecutive CRC patients was enrolled. PNPLA8 expression in tumor samples was evaluated by immunohistochemistry staining and semi-quantitated with immunoreactive scores. CRC patients were divided into high and low PNPLA8 expression groups based on the cut-off values, which were calculated by X-tile software. The prognostic value of PNPLA8 was identified using univariate and multivariate Cox regression analysis. The overall survival (OS) rates of CRC patients in the study cohort were compared with Kaplan-Meier analysis and Log-rank test. RESULTS: PNPLA8 expression was significantly associated with distant metastases in our cohort (P = 0.048). CRC patients with high PNPLA8 expression indicated poor OS (median OS = 35.3, P = 0.005). CRC patients with a higher PNPLA8 expression at either stage I and II or stage III and IV had statistically significant shorter OS. For patients with left-sided colon and rectal cancer, the survival curves of two PNPLA8-expression groups showed statistically significant differences. Multivariate analysis also confirmed that high PNPLA8 expression was an independent prognostic factor for overall survival (hazard ratio HR = 1.328, 95%CI: 1.016-1.734, P = 0.038). CONCLUSION: PNPLA8 is a novel independent prognostic factor for CRC. These findings suggest that PNPLA8 is a potential target in clinical CRC management.

20.
World J Gastroenterol ; 30(11): 1572-1587, 2024 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-38617453

RESUMO

BACKGROUND: Fecal microbiota transplantation (FMT) is a promising therapeutic approach for treating Crohn's disease (CD). The new method of FMT, based on the automatic washing process, was named as washed microbiota transplantation (WMT). Most existing studies have focused on observing the clinical phenomena. However, the mechanism of action of FMT for the effective management of CD-particularly in-depth multi-omics analysis involving the metagenome, metatranscriptome, and metabolome-has not yet been reported. AIM: To assess the efficacy of WMT for CD and explore alterations in the microbiome and metabolome in response to WMT. METHODS: We conducted a prospective, open-label, single-center clinical study. Eleven CD patients underwent WMT. Their clinical responses (defined as a decrease in their CD Activity Index score of > 100 points) and their microbiome (metagenome, metatranscriptome) and metabolome profiles were evaluated three months after the procedure. RESULTS: Seven of the 11 patients (63.6%) showed an optimal clinical response three months post-WMT. Gut microbiome diversity significantly increased after WMT, consistent with improved clinical symptoms. Comparison of the metagenome and metatranscriptome analyses revealed consistent alterations in certain strains, such as Faecalibacterium prausnitzii, Roseburia intestinalis, and Escherichia coli. In addition, metabolomics analyses demonstrated that CD patients had elevated levels of various amino acids before treatment compared to the donors. However, levels of vital amino acids that may be associated with disease progression (e.g., L-glutamic acid, gamma-glutamyl-leucine, and prolyl-glutamine) were reduced after WMT. CONCLUSION: WMT demonstrated therapeutic efficacy in CD treatment, likely due to the effective reconstruction of the patient's microbiome. Multi-omics techniques can effectively help decipher the potential mechanisms of WMT in treating CD.


Assuntos
Antifibrinolíticos , Doença de Crohn , Microbiota , Humanos , Aminoácidos , Doença de Crohn/diagnóstico , Doença de Crohn/terapia , Escherichia coli , Metagenoma , Estudos Prospectivos
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