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1.
Adv Sci (Weinh) ; : e2405568, 2024 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-39401410

RESUMO

Intracellular trafficking, an extremely complex network, dynamically orchestrates nearly all cellular activities. A versatile method that enables the manipulation of target transport pathways with high spatiotemporal accuracy in vitro and in vivo is required to study how this network coordinates its functions. Here, a new method called RIVET (Rapid Immobilization of target Vesicles on Engaged Tracks) is presented. Utilizing inducible dimerization between target vesicles and selective cytoskeletons, RIVET can spatiotemporally halt numerous intracellular trafficking pathways within seconds in a reversible manner. Its highly specific perturbations allow for the real-time dissection of the dynamic relationships among different trafficking pathways. Moreover, RIVET is capable of inhibiting receptor-mediated endocytosis. This versatile system can be applied from the cellular level to whole organisms. RIVET opens up new avenues for studying intracellular trafficking under various physiological and pathological conditions and offers potential strategies for treating trafficking-related disorders.

2.
Taiwan J Obstet Gynecol ; 63(6): 948-952, 2024 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-39482011

RESUMO

OBJECTIVE: Kleefstra Syndrome (KS) is a rare genetic disorder caused by a deletion at 9q34.3. Studies showed that various heart defects are observed in 41-43% of patients and abnormal features on brain imaging in 58-63%. To date, the prenatal phenotype in KS has yet to be defined. CASE REPORT: We present the first prenatal diagnosis and chromosomal microarray analysis (CMA) of a case of 9q34.3 microdeletion in a fetus with increased amniotic fluid, supported by abnormal prenatal ultrasound findings, and confirmed via autopsy. CMA revealed a 2.1 Mb 9q34.3 microdeletion encompassing an OMIM gene of EHMT1, which is consistent with the diagnosis of Kleefstra syndrome and 9q subtelomeric deletion syndrome. CONCLUSION: When a fetus with normal karyotype presents with polyhydramnios or abnormalities noted during second-trimester prenatal ultrasound screening, CMA analysis can be considered as the next step to rule out or confirm the diagnosis of chromosomal or other genetic aberrations.


Assuntos
Deleção Cromossômica , Cromossomos Humanos Par 9 , Anormalidades Craniofaciais , Poli-Hidrâmnios , Ultrassonografia Pré-Natal , Humanos , Feminino , Cromossomos Humanos Par 9/genética , Gravidez , Poli-Hidrâmnios/genética , Anormalidades Craniofaciais/genética , Anormalidades Craniofaciais/diagnóstico , Adulto , Deficiência Intelectual/genética , Deficiência Intelectual/diagnóstico , Diagnóstico Pré-Natal/métodos , Cardiopatias Congênitas/genética , Cardiopatias Congênitas/diagnóstico , Histona-Lisina N-Metiltransferase/genética , Análise em Microsséries , Segundo Trimestre da Gravidez
3.
bioRxiv ; 2024 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-39345560

RESUMO

Pulmonary arterial hypertension (PAH) is a progressive disease driven by endothelial cell inflammation and dysfunction, resulting in the pathological remodeling of the pulmonary vasculature. Innate immune activation has been linked to PAH development; however, the regulation, propagation, and reversibility of the induction of inflammation in PAH is poorly understood. Here, we demonstrate a role for interferon inducible protein 16 (IFI16), an innate immune sensor, as a modulator of endothelial inflammation in pulmonary hypertension, utilizing human pulmonary artery endothelial cells (PAECs). Inflammatory stimulus of PAECs with IL-1ß up-regulates IFI16 expression, inducing proinflammatory cytokine up-regulation and cellular apoptosis. IFI16 mRNA stability is regulated by post-transcriptional m6A modification, mediated by Wilms' tumor 1-associated protein (WTAP), a structural stabilizer of the methyltransferase complex, via regulation of m6A methylation of IFI16. Additionally, m6A levels are increased in the peripheral blood mononuclear cells of PAH patients compared to control, indicating that quantifying this epigenetic change in patients may hold potential as a biomarker for disease identification. In summary, our study demonstrates IFI16 mediates inflammatory endothelial pathophenotypes seen in pulmonary arterial hypertension.

4.
J Agric Food Chem ; 72(38): 21013-21029, 2024 Sep 25.
Artigo em Inglês | MEDLINE | ID: mdl-39264009

RESUMO

Parthenolide is a germacrane sesquiterpene lactone separated from the traditional medicinal plant feverfew. Previous studies have shown that parthenolide possesses many pharmacological activities, involving anti-inflammatory and anticancer activities. However, the antitumor mechanism of parthenolide has not been fully elucidated. Thus, we investigate the potential antitumor mechanisms of parthenolactone. We predicted through network pharmacology that parthenolide may target HIF-1α to interfere with the occurrence and development of cancer. We found that parthenolide inhibited PD-L1 protein synthesis through mTOR/p70S6K/4EBP1/eIF4E and RAS/RAF/MEK/MAPK signaling pathways and promoted PD-L1 protein degradation through the lysosomal pathway, thereby inhibiting PD-L1 expression. Immunoprecipitation and Western blotting results demonstrated that parthenolide inhibited PD-L1 expression by suppressing HIF-1α and RAS cooperatively. We further proved that parthenolide inhibited cell proliferation, migration, invasion, and tube formation via down-regulating PD-L1. Moreover, parthenolide increased the effect of T cells to kill tumor cells. In vivo xenograft assays further demonstrated that parthenolide suppressed the growth of tumor xenografts. Collectively, we report for the first time that parthenolide enhanced T cell tumor-killing activity and suppressed cell proliferation, migration, invasion, and tube formation by PD-L1. The current study provides new insight for the development of parthenolide as a novel anticancer drug targeting PD-L1.


Assuntos
Antígeno B7-H1 , Proliferação de Células , Sesquiterpenos , Sesquiterpenos/farmacologia , Sesquiterpenos/química , Humanos , Animais , Antígeno B7-H1/genética , Antígeno B7-H1/metabolismo , Camundongos , Proliferação de Células/efeitos dos fármacos , Linhagem Celular Tumoral , Linfócitos T/efeitos dos fármacos , Linfócitos T/imunologia , Linfócitos T/metabolismo , Subunidade alfa do Fator 1 Induzível por Hipóxia/metabolismo , Subunidade alfa do Fator 1 Induzível por Hipóxia/genética , Camundongos Endogâmicos BALB C , Camundongos Nus , Transdução de Sinais/efeitos dos fármacos
5.
Int J Biol Macromol ; 275(Pt 1): 133467, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38945319

RESUMO

Hyaluronic acid (HA) serves as a vitreous substitute owing to its ability to mimic the physical functions of native vitreous humor. However, pure HA hydrogels alone do not provide sufficient protection against potential inflammatory risks following vitrectomy. In this study, HA was crosslinked with 1,4-butanediol diglycidyl ether (BDDE) to form HA hydrogels (HB). Subsequently, the anti-inflammatory agent epigallocatechin gallate (EGCG) was added to the hydrogel (HBE) for ophthalmic applications as a vitreous substitute. The characterization results indicated the successful preparation of HB with transparency, refractive index, and osmolality similar to those of native vitreous humor, and with good injectability. The anti-inflammatory ability of HBE was also confirmed by the reduced expression of inflammatory genes in retinal pigment epithelial cells treated with HBE compared with those treated with HB. In a New Zealand white rabbit model undergoing vitreous substitution treatment, HBE 50 (EGCG 50 µM addition) exhibited positive results at 28 days post-surgery. These outcomes included restored intraocular pressure, improved electroretinogram responses, minimal increase in corneal thickness, and no inflammation during histological examination. This study demonstrated the potential of an injectable HA-BDDE cross-linked hydrogel containing EGCG as a vitreous substitute for vitrectomy applications, offering prolonged degradation time and anti-inflammatory effects postoperatively.


Assuntos
Catequina , Ácido Hialurônico , Hidrogéis , Corpo Vítreo , Catequina/análogos & derivados , Catequina/química , Catequina/farmacologia , Ácido Hialurônico/química , Ácido Hialurônico/farmacologia , Animais , Hidrogéis/química , Coelhos , Corpo Vítreo/efeitos dos fármacos , Corpo Vítreo/cirurgia , Corpo Vítreo/metabolismo , Reagentes de Ligações Cruzadas/química , Eletrorretinografia , Butileno Glicóis/química , Butileno Glicóis/farmacologia , Humanos , Epitélio Pigmentado da Retina/efeitos dos fármacos , Epitélio Pigmentado da Retina/metabolismo , Vitrectomia , Anti-Inflamatórios/farmacologia , Anti-Inflamatórios/química , Injeções
6.
Cell Metab ; 36(6): 1335-1350.e8, 2024 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-38701775

RESUMO

Perivascular collagen deposition by activated fibroblasts promotes vascular stiffening and drives cardiovascular diseases such as pulmonary hypertension (PH). Whether and how vascular fibroblasts rewire their metabolism to sustain collagen biosynthesis remains unknown. Here, we found that inflammation, hypoxia, and mechanical stress converge on activating the transcriptional coactivators YAP and TAZ (WWTR1) in pulmonary arterial adventitial fibroblasts (PAAFs). Consequently, YAP and TAZ drive glutamine and serine catabolism to sustain proline and glycine anabolism and promote collagen biosynthesis. Pharmacologic or dietary intervention on proline and glycine anabolic demand decreases vascular stiffening and improves cardiovascular function in PH rodent models. By identifying the limiting metabolic pathways for vascular collagen biosynthesis, our findings provide guidance for incorporating metabolic and dietary interventions for treating cardiopulmonary vascular disease.


Assuntos
Glutamina , Serina , Rigidez Vascular , Animais , Glutamina/metabolismo , Serina/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Fibroblastos/metabolismo , Hipertensão Pulmonar/metabolismo , Hipertensão Pulmonar/patologia , Humanos , Colágeno/metabolismo , Ratos
7.
Sci Adv ; 10(21): eadk7557, 2024 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-38787949

RESUMO

Information metasurface has shown great potential in wireless communications owing to its ability to flexibly control electromagnetic waves. However, it is still a big challenge to achieve high-security and large-channel capacity wireless communications by a simple system. Here, we propose a space-polarization-division multiplexing secure wireless communication system with information camouflage capability based on the information metasurface, which can realize multichannel encrypted wireless communications with different polarization coding strategies independently and simultaneously. A polarization mask key is introduced to encrypt the target message, and the cipher message is further concealed behind a cover image with steganography and sent to the user by using the polarization modulation strategy. Different polarization mask keys can be adopted in each individual communication by changing the polarization coding strategy to enhance the system security. The proposed scheme integrates computational algorithm encryption and physical layer security together and thus has the advantages of high security, large channel capacity, and strong camouflage ability.

8.
Cancer Med ; 13(7): e7132, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38606892

RESUMO

BACKGROUND: Fertility-sparing surgery (FSS) is an alternative choice of young patients who have not completed their family planning and still have fertility needs. The aims of this study were to compare the outcomes of early-stage epithelial ovarian cancer (EOC) patients undergoing FSS and radical comprehensive staging surgery (RCS), and the suitability of FSS. METHODS: A total of 1297 patients aged between 20 and 44 years with newly diagnosed early-stage EOC were recruited from the Taiwan Cancer Registry database between 2009 and 2017. Site-specific surgery codes were used to distinguish patients in FSS group or RCS group. Cancer-specific survival (CSS) was evaluated using Kaplan-Meier method with log-rank test and Cox regression model. RESULTS: There were 401 and 896 patients in FSS and RCS group. Patients in FSS group were with younger age and mostly had Stage I disease. In contrast, patients in RCS group were older. There were more Stage II, high-grade (Grade 3) disease, and adjuvant chemotherapy in RCS group. Stage and tumor grade were two independent factors correlating with CSS and the type of surgery showed no effect on CSS (HR: 1.09, 95% CI: 0.66-1.77, p = 0.73) in multivariable analysis. In multivariable analysis, the clear cell carcinoma group who underwent FSS demonstrated better CSS compared to those in the RCS group (HR: 0.28, 95% CI: 0.06-0.82, p = 0.04). A total of 17 women who underwent FSS developed second malignancies of the uterine corpus or contralateral ovary. CONCLUSION: FSS can be a safe alternative procedure in selected young patients of Stage I EOC who have fertility desire. Endometrial biopsy before or during FSS and regular surveillance to detect recurrence are mandatory for ovarian cancer patients undergoing FSS.


Assuntos
Preservação da Fertilidade , Neoplasias Ovarianas , Humanos , Feminino , Adulto Jovem , Adulto , Estudos Retrospectivos , Carcinoma Epitelial do Ovário/cirurgia , Carcinoma Epitelial do Ovário/patologia , Neoplasias Ovarianas/epidemiologia , Neoplasias Ovarianas/cirurgia , Neoplasias Ovarianas/tratamento farmacológico , Estadiamento de Neoplasias
9.
Adv Healthc Mater ; 13(20): e2304675, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38688026

RESUMO

The mitochondrial enzyme arginase-2 (Arg-2) is implicated in the pathophysiology of contrast-induced acute kidney injury (CI-AKI). Therefore, Arg-2 represents a candid target for CI-AKI prevention. Here, layer-by-layer (LbL) assembled renal-targeting polymeric nanoparticles are developed to efficiently deliver small interfering RNA (siRNA), knockdown Arg-2 expression in renal tubules, and prevention of CI-AKI is evaluated. First, near-infrared dye-loaded poly(lactic-co-glycolic acid) (PLGA) anionic cores are electrostatically coated with cationic chitosan (CS) to facilitate the adsorption and stabilization of Arg-2 siRNA. Next, nanoparticles are coated with anionic hyaluronan (HA) to provide protection against siRNA leakage and shielding against early clearance. Sequential electrostatic layering of CS and HA improves loading capacity of Arg-2 siRNA and yields LbL-assembled nanoparticles. Renal targeting and accumulation is enhanced by modifying the outermost layer of HA with a kidney targeting peptide (HA-KTP). The resultant kidney-targeting and siRNA loaded nanoparticles (PLGA/CS/HA-KTP siRNA) exhibit proprietary accumulation in kidneys and proximal tubular cells at 24 h post-tail vein injection. In iohexol-induced in vitro and in vivo CI-AKI models, PLGA/CS/HA-KTP siRNA delivery alleviates oxidative and nitrification stress, and rescues mitochondrial dysfunction while reducing apoptosis, thereby demonstrating a robust and satisfactory therapeutic effect. Thus, PLGA/CS/HA-KTP siRNA nanoparticles offer a promising candidate therapy to protect against CI-AKI.


Assuntos
Injúria Renal Aguda , Arginase , Meios de Contraste , Nanopartículas , Copolímero de Ácido Poliláctico e Ácido Poliglicólico , RNA Interferente Pequeno , Nanopartículas/química , Injúria Renal Aguda/induzido quimicamente , Injúria Renal Aguda/prevenção & controle , Injúria Renal Aguda/metabolismo , Animais , RNA Interferente Pequeno/química , Copolímero de Ácido Poliláctico e Ácido Poliglicólico/química , Meios de Contraste/química , Camundongos , Arginase/metabolismo , Arginase/genética , Quitosana/química , Técnicas de Silenciamento de Genes , Rim/metabolismo , Rim/efeitos dos fármacos , Rim/patologia , Ácido Hialurônico/química , Masculino , Humanos , Ácido Láctico/química , Ácido Poliglicólico/química , Nanopartículas em Multicamadas
10.
bioRxiv ; 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38464060

RESUMO

Vascular inflammation critically regulates endothelial cell (EC) pathophenotypes, particularly in pulmonary arterial hypertension (PAH). Dysregulation of lysosomal activity and cholesterol metabolism have known inflammatory roles in disease, but their relevance to PAH is unclear. In human pulmonary arterial ECs and in PAH, we found that inflammatory cytokine induction of the nuclear receptor coactivator 7 (NCOA7) both preserved lysosomal acidification and served as a homeostatic brake to constrain EC immunoactivation. Conversely, NCOA7 deficiency promoted lysosomal dysfunction and proinflammatory oxysterol/bile acid generation that, in turn, contributed to EC pathophenotypes. In vivo, mice deficient for Ncoa7 or exposed to the inflammatory bile acid 7α-hydroxy-3-oxo-4-cholestenoic acid (7HOCA) displayed worsened PAH. Emphasizing this mechanism in human PAH, an unbiased, metabolome-wide association study (N=2,756) identified a plasma signature of the same NCOA7-dependent oxysterols/bile acids associated with PAH mortality (P<1.1x10-6). Supporting a genetic predisposition to NCOA7 deficiency, in genome-edited, stem cell-derived ECs, the common variant intronic SNP rs11154337 in NCOA7 regulated NCOA7 expression, lysosomal activity, oxysterol/bile acid production, and EC immunoactivation. Correspondingly, SNP rs11154337 was associated with PAH severity via six-minute walk distance and mortality in discovery (N=93, P=0.0250; HR=0.44, 95% CI [0.21-0.90]) and validation (N=630, P=2x10-4; HR=0.49, 95% CI [0.34-0.71]) cohorts. Finally, utilizing computational modeling of small molecule binding to NCOA7, we predicted and synthesized a novel activator of NCOA7 that prevented EC immunoactivation and reversed indices of rodent PAH. In summary, we have established a genetic and metabolic paradigm and a novel therapeutic agent that links lysosomal biology as well as oxysterol and bile acid processes to EC inflammation and PAH pathobiology. This paradigm carries broad implications for diagnostic and therapeutic development in PAH and in other conditions dependent upon acquired and innate immune regulation of vascular disease.

13.
Sci Transl Med ; 16(729): eadd2029, 2024 01 10.
Artigo em Inglês | MEDLINE | ID: mdl-38198571

RESUMO

Hypoxic reprogramming of vasculature relies on genetic, epigenetic, and metabolic circuitry, but the control points are unknown. In pulmonary arterial hypertension (PAH), a disease driven by hypoxia inducible factor (HIF)-dependent vascular dysfunction, HIF-2α promoted expression of neighboring genes, long noncoding RNA (lncRNA) histone lysine N-methyltransferase 2E-antisense 1 (KMT2E-AS1) and histone lysine N-methyltransferase 2E (KMT2E). KMT2E-AS1 stabilized KMT2E protein to increase epigenetic histone 3 lysine 4 trimethylation (H3K4me3), driving HIF-2α-dependent metabolic and pathogenic endothelial activity. This lncRNA axis also increased HIF-2α expression across epigenetic, transcriptional, and posttranscriptional contexts, thus promoting a positive feedback loop to further augment HIF-2α activity. We identified a genetic association between rs73184087, a single-nucleotide variant (SNV) within a KMT2E intron, and disease risk in PAH discovery and replication patient cohorts and in a global meta-analysis. This SNV displayed allele (G)-specific association with HIF-2α, engaged in long-range chromatin interactions, and induced the lncRNA-KMT2E tandem in hypoxic (G/G) cells. In vivo, KMT2E-AS1 deficiency protected against PAH in mice, as did pharmacologic inhibition of histone methylation in rats. Conversely, forced lncRNA expression promoted more severe PH. Thus, the KMT2E-AS1/KMT2E pair orchestrates across convergent multi-ome landscapes to mediate HIF-2α pathobiology and represents a key clinical target in pulmonary hypertension.


Assuntos
Hipertensão Pulmonar , RNA Longo não Codificante , Humanos , Ratos , Animais , Camundongos , Alelos , Hipertensão Pulmonar/genética , Histonas , RNA Longo não Codificante/genética , Roedores , Lisina , Hipertensão Pulmonar Primária Familiar , Hipóxia/genética , Metiltransferases , Fatores de Transcrição Hélice-Alça-Hélice Básicos/genética
14.
Mol Cancer Res ; 22(4): 402-414, 2024 04 02.
Artigo em Inglês | MEDLINE | ID: mdl-38226993

RESUMO

Bone metastasis (BM) is one of the most common complications of advanced cancer. Immunotherapy for bone metastasis of lung cancer (LCBM) is not so promising and the immune mechanisms are still unknown. Here, we utilized a model of BM by injecting cancer cells through caudal artery (CA) to screen out a highly bone metastatic derivative (LLC1-BM3) from a murine lung cancer cell line LLC1. Mass spectrometry-based proteomics was performed in LLC1-parental and LLC1-BM3 cells. Combining with prognostic survival information from patients with lung cancer, we identified serpin B9 (SB9) as a key factor in BM. Molecular characterization showed that SB9 overexpression was associated with poor prognosis and high bone metastatic burden in lung cancer. Moreover, SB9 could increase the ability of lung cancer cells to metastasize to the bone. The mechanistic studies revealed that tumor-derived SB9 promoted BM through an immune cell-dependent way by inactivating granzyme B, manifesting with the decreased infiltration of cytotoxic T cells and increased expression level of exhausted markers. A specific SB9-targeting inhibitor [1,3-benzoxazole-6-carboxylic acid (BTCA)] significantly suppressed LCBM in the CA mouse model. This study reveals that SB9 may serve as a therapeutic target and potential prognostic marker for patients with LCBM. IMPLICATIONS: SB9 as a therapeutic target for LCBM.


Assuntos
Neoplasias Ósseas , Neoplasias Pulmonares , Serpinas , Humanos , Camundongos , Animais , Neoplasias Pulmonares/patologia , Serpinas/genética , Serpinas/metabolismo , Proteômica , Linhagem Celular , Neoplasias Ósseas/genética
15.
Adv Healthc Mater ; 13(11): e2303911, 2024 04.
Artigo em Inglês | MEDLINE | ID: mdl-38215731

RESUMO

Soft tissue sarcomas (STS) are highly malignant tumors with limited treatment options owing to their heterogeneity and resistance to conventional therapies. Photodynamic therapy (PDT) and poly-ADP-ribose polymerase (PARP) inhibitors (PARPi) have shown potential for STS treatment, with PDT being effective for sarcomas located on the extremities and body surface and PARPi targeting defects in homologous recombination repair. To address the limitations of PDT and harness the potential of PARPi, herein, a novel therapeutic approach for STS treatment combining nanocapsules bearing integrated metal-organic frameworks (MOFs) and covalent organic frameworks (COFs), i.e., MOF@COF, with PDT and PARPi is proposed. Nanocapsules are designed, referred to as ZTN@COF@poloxamer, which contain a Zr-based MOF and tetrakis (4-carbethoxyphenyl) porphyrin as a photosensitizer, are coated with a COF to improve the sensitizing properties, and are loaded with niraparib to inhibit DNA repair. Experiments demonstrate that this new nanocapsules treatment significantly inhibits STS growth, promotes tumor cell apoptosis, exhibits high antitumor activity with minimal side effects, activates the immune response of the tumor, and inhibits lung metastasis in vivo. Therefore, MOF@COF nanocapsules combined with PARPi offer a promising approach for STS treatment, with the potential to enhance the efficacy of PDT and prevent tumor recurrence.


Assuntos
Estruturas Metalorgânicas , Nanocápsulas , Fotoquimioterapia , Inibidores de Poli(ADP-Ribose) Polimerases , Sarcoma , Fotoquimioterapia/métodos , Animais , Nanocápsulas/química , Estruturas Metalorgânicas/química , Estruturas Metalorgânicas/farmacologia , Camundongos , Inibidores de Poli(ADP-Ribose) Polimerases/farmacologia , Inibidores de Poli(ADP-Ribose) Polimerases/química , Linhagem Celular Tumoral , Sarcoma/tratamento farmacológico , Sarcoma/patologia , Humanos , Apoptose/efeitos dos fármacos , Fármacos Fotossensibilizantes/química , Fármacos Fotossensibilizantes/farmacologia , Camundongos Endogâmicos BALB C , Camundongos Nus , Feminino
16.
Cancer Res ; 84(7): 994-1012, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38295227

RESUMO

Cooperation between primary malignant cells and stromal cells can mediate the establishment of lung metastatic niches. Here, we characterized the landscape of cell populations in the tumor microenvironment in treatment-naïve osteosarcoma using single-cell RNA sequencing and identified a stem cell-like cluster with tumor cell-initiating properties and prometastatic traits. CXCL14 was specifically enriched in the stem cell-like cluster and was also significantly upregulated in lung metastases compared with primary tumors. CXCL14 induced stromal reprogramming and evoked a malignant phenotype in fibroblasts to form a supportive lung metastatic niche. Binding of CXCL14 to heterodimeric integrin α11ß1 on fibroblasts activated actomyosin contractility and matrix remodeling properties. CXCL14-stimulated fibroblasts produced TGFß and increased osteosarcoma invasion and migration. mAbs targeting the CXCL14-integrin α11ß1 axis inhibited fibroblast TGFß production, enhanced CD8+ T cell-mediated antitumor immunity, and suppressed osteosarcoma lung metastasis. Taken together, these findings identify cross-talk between osteosarcoma cells and fibroblasts that promotes metastasis and demonstrate that targeting the CXCL14-integrin α11ß1 axis is a potential strategy to inhibit osteosarcoma lung metastasis. SIGNIFICANCE: Cooperation between stem-like osteosarcoma cells and fibroblasts mediated by a CXCL14-integrin α11ß1 axis creates a tumor-supportive lung metastatic niche and represents a therapeutic target to suppress osteosarcoma metastasis.


Assuntos
Quimiocinas CXC , Integrinas , Neoplasias Pulmonares , Osteossarcoma , Microambiente Tumoral , Humanos , Linhagem Celular Tumoral , Quimiocinas CXC/metabolismo , Fibroblastos/metabolismo , Integrinas/metabolismo , Pulmão/patologia , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/secundário , Osteossarcoma/patologia , Receptores de Colágeno , Fator de Crescimento Transformador beta/metabolismo
17.
Clin Chim Acta ; 554: 117775, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38220135

RESUMO

BACKGROUND: Large-for-gestational-age (LGA) neonates have increased risk of adverse pregnancy outcomes and adult metabolic diseases. We aimed to investigate the relationship between plasma angiopoietin-like protein 4 (ANGPTL4), a protein involved in lipid and glucose metabolism during pregnancy, placental function, growth factors, and the risk of LGA. METHODS: We conducted a prospective cohort study and recruited women with singleton pregnancies at the National Taiwan University Hospital between 2013 and 2018. First trimester maternal plasma ANGPTL4 concentrations were measured. RESULTS: Among 353 pregnant women recruited, the LGA group had higher first trimester plasma ANGPTL4 concentrations than the appropriate-for-gestational-age group. Plasma ANGPTL4 was associated with hemoglobin A1c, post-load plasma glucose, plasma triglyceride, plasma free fatty acid concentrations, plasma growth hormone variant (GH-V), and birth weight, but was not associated with cord blood growth factors. After adjusting for age, body mass index, hemoglobin A1c, and plasma triglyceride concentrations, plasma ANGPTL4 concentrations were significantly associated with LGA risk, and its predictive performance, as measured by the area under the receiver operating characteristic curve, outperformed traditional risk factors for LGA. CONCLUSIONS: Plasma ANGPTL4 is associated with glucose and lipid metabolism during pregnancy, plasma GH-V, and birth weight, and is an early biomarker for predicting the risk of LGA.


Assuntos
Glucose , Metabolismo dos Lipídeos , Adulto , Recém-Nascido , Gravidez , Feminino , Humanos , Peso ao Nascer , Proteína 4 Semelhante a Angiopoietina , Hemoglobinas Glicadas , Estudos Prospectivos , Placenta , Resultado da Gravidez , Idade Gestacional , Triglicerídeos
18.
Cell Signal ; 114: 110979, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38000525

RESUMO

Chronic inflammation is a key driver for colitis-associated colorectal cancer (CAC). It has been reported that inflammatory cytokines, such as IL-1ß, could promote CAC. Zinc finger protein 70 (ZNF70) is involved in multiple biological processes. Here, we identified a previously unknown role for ZNF70 regulates macrophages IL-1ß secretion to promote HCT116 proliferation in CAC, and investigated its underlying mechanism. We showed ZNF70 is much higher expressed in CAC tumor tissues compared with adjacent normal tissues in clinical CAC samples. Further experiments showed ZNF70 promoted macrophages IL-1ß secretion and HCT116 proliferation. In LPS/ATP-stimulated THP-1 cells, we found ZNF70 activated NLRP3 inflammasome, resulting in robust IL-1ß secretion. Interestingly, we discovered the ZnF domain of ZNF70 could interact with NLRP3 and decrease the K48-linked ubiquitination of NLRP3. Moreover, ZNF70 could activate STAT3, thereby promoting IL-1ß synthesis. Noteworthy, ZNF70 enhanced proliferation by upregulating STAT3 activation in HCT116 cells cultured in the conditioned medium of THP-1 macrophages treated with LPS/ATP. Finally, the vivo observations were confirmed using AAV-mediated ZNF70 knockdown, which improved colitis-associated colorectal cancer in the AOM/DSS model. The correlation between ZNF70 expression and overall survival/IL-1ß expression in colorectal cancer was verified by TCGA database. Taken together, ZNF70 regulates macrophages IL-1ß secretion to promote the HCT116 cells proliferation via activation of NLRP3 inflammasome and STAT3 pathway, suggesting that ZNF70 may be a promising preventive target for treating in CAC.


Assuntos
Neoplasias Associadas a Colite , Inflamassomos , Humanos , Inflamassomos/metabolismo , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Células HCT116 , Neoplasias Associadas a Colite/metabolismo , Lipopolissacarídeos/metabolismo , Macrófagos/metabolismo , Trifosfato de Adenosina/metabolismo , Proliferação de Células , Interleucina-1beta/metabolismo , Fator de Transcrição STAT3/metabolismo
19.
J Med Genet ; 61(2): 176-181, 2024 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-37798098

RESUMO

BACKGROUND: Expanded genetic screening before conception or during prenatal care can provide a more comprehensive evaluation of heritable fetal diseases. This study aimed to provide a large cohort to evaluate the significance of expanded carrier screening and to consolidate the role of expanded genetic screening in prenatal care. METHODS: This multicentre, retrospective cohort study was conducted between 31 December 2019 and 21 July 2022. A screening panel containing 302 genes and next-generation sequencing were used for the evaluation. The patients were referred from obstetric clinics, infertility centres and medical centres. Genetic counsellors conducted consultation for at least 15 min before and after screening. RESULTS: A total of 1587 patients were screened, and 653 pairs were identified. Among the couples who underwent the screening, 62 (9.49%) had pathogenic variants detected on the same genes. In total, 212 pathogenic genes were identified in this study. A total of 1173 participants carried at least one mutated gene, with a positive screening rate of 73.91%. Among the pathogenic variants that were screened, the gene encoding gap junction beta-2 (GJB2) exhibited the highest prevalence, amounting to 19.85%. CONCLUSION: Next-generation sequencing carrier screening provided additional information that may alter prenatal obstetric care by 9.49%. Pan-ethnic genetic screening and counselling should be suggested for couples of fertile age.


Assuntos
Aconselhamento , Testes Genéticos , Gravidez , Feminino , Humanos , Triagem de Portadores Genéticos , Estudos Retrospectivos , Estudos Prospectivos
20.
Adv Sci (Weinh) ; 11(5): e2305152, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38044308

RESUMO

Hand gesture plays an important role in many circumstances, which is one of the most common interactive methods in daily life, especially for disabled people. Human-machine interaction is another popular research topic to realize direct and efficient control, making machines intelligent and maneuverable. Here, a special human-machine interaction system is proposed and namedas computer-vision (CV) based gesture-metasurface interaction (GMI) system, which can be used for both direct beam manipulations and real-time wireless communications. The GMI system first needs to select its working mode according to the gesture command to determine whether to perform beam manipulations or wireless communications, and then validate the permission for further operation by recognizing unlocking gesture to ensure security. Both beam manipulation and wireless communication functions are validated experimentally, which show that the GMI system can not only realize real-time switching and remote control of different beams through gesture command, but also communicate with a remote computer in real time by translating the gesture language to text message. The proposed non-contact GMI system has the advantages of good interactivity, high flexibility, and multiple functions, which can find potential applications in community security, gesture-command smart home, barrier-free communications, and so on.

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