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1.
Sci Rep ; 14(1): 23731, 2024 10 10.
Artículo en Inglés | MEDLINE | ID: mdl-39390237

RESUMEN

The preoperative diagnosis and management of Peutz-Jeghers syndrome (PJS) patients with cervical lesions remain problematic. This study analysed the associations between pathological types of cervical lesions in PJS patients and their MRI features. A total of 34 PJS patients were included and two experienced radiologists reviewed the MRIs independently. Based on the pathological diagnosis, the patients were categorized into four groups: normal (n  =  4), lobular endocervical glandular hyperplasia (LEGH, n  =  11), atypical LEGH (aLEGH, n  =  8), and gastric-type endocervical adenocarcinoma (G-EAC, n  =  11). By observing the MRI features, we found statistically significant differences in the extent of lesions (P  = 0 .001), distribution of microcysts (P  = 0 .001), proportion of microcysts (P  <  0.001) and endometrial involvement (P  = 0.019) among the four groups. Notably, solid components and disrupted cervical stromal rings were found only in the aLEGH and G-EAC groups (P  < 0.001).  Consequently, we created a novel grading system based on the aforementioned MRI features to align with the potential malignancy of cervical lesions in PJS patients. This system enables patients to receive timely and appropriate treatment recommendations while facilitating collaboration between radiologists and physicians.


Asunto(s)
Toma de Decisiones Clínicas , Imagen por Resonancia Magnética , Síndrome de Peutz-Jeghers , Neoplasias del Cuello Uterino , Humanos , Femenino , Síndrome de Peutz-Jeghers/diagnóstico por imagen , Síndrome de Peutz-Jeghers/patología , Síndrome de Peutz-Jeghers/complicaciones , Imagen por Resonancia Magnética/métodos , Adulto , Neoplasias del Cuello Uterino/diagnóstico por imagen , Neoplasias del Cuello Uterino/patología , Persona de Mediana Edad , Adulto Joven , Adolescente , Cuello del Útero/patología , Cuello del Útero/diagnóstico por imagen
2.
Science ; 384(6701): eadk5382, 2024 Jun 14.
Artículo en Inglés | MEDLINE | ID: mdl-38870290

RESUMEN

Polycystic ovary syndrome (PCOS), a prevalent reproductive disorder in women of reproductive age, features androgen excess, ovulatory dysfunction, and polycystic ovaries. Despite its high prevalence, specific pharmacologic intervention for PCOS is challenging. In this study, we identified artemisinins as anti-PCOS agents. Our finding demonstrated the efficacy of artemisinin derivatives in alleviating PCOS symptoms in both rodent models and human patients, curbing hyperandrogenemia through suppression of ovarian androgen synthesis. Artemisinins promoted cytochrome P450 family 11 subfamily A member 1 (CYP11A1) protein degradation to block androgen overproduction. Mechanistically, artemisinins directly targeted lon peptidase 1 (LONP1), enhanced LONP1-CYP11A1 interaction, and facilitated LONP1-catalyzed CYP11A1 degradation. Overexpression of LONP1 replicated the androgen-lowering effect of artemisinins. Our data suggest that artemisinin application is a promising approach for treating PCOS and highlight the crucial role of the LONP1-CYP11A1 interaction in controlling hyperandrogenism and PCOS occurrence.


Asunto(s)
Proteasas ATP-Dependientes , Artemisininas , Enzima de Desdoblamiento de la Cadena Lateral del Colesterol , Proteínas Mitocondriales , Síndrome del Ovario Poliquístico , Animales , Femenino , Humanos , Ratones , Ratas , Andrógenos/metabolismo , Artemisininas/uso terapéutico , Artemisininas/farmacología , Enzima de Desdoblamiento de la Cadena Lateral del Colesterol/metabolismo , Enzima de Desdoblamiento de la Cadena Lateral del Colesterol/genética , Modelos Animales de Enfermedad , Hiperandrogenismo/tratamiento farmacológico , Hiperandrogenismo/metabolismo , Proteínas Mitocondriales/metabolismo , Proteínas Mitocondriales/genética , Ovario/efectos de los fármacos , Ovario/metabolismo , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Proteolisis , Ratones Endogámicos C57BL , Adulto Joven , Adulto , Ratas Sprague-Dawley , Proteasas ATP-Dependientes/genética , Proteasas ATP-Dependientes/metabolismo
3.
Biomed Pharmacother ; 177: 116962, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38936195

RESUMEN

Metabolic disorders are considered the hallmarks of cancer and metabolic reprogramming is emerging as a new strategy for cancer treatment. Exogenous and endogenous stressors can induce cellular senescence; the interactions between cellular senescence and systemic metabolism are dynamic. Cellular senescence disrupts metabolic homeostasis in various tissues, which further promotes senescence, creating a vicious cycle facilitating tumor occurrence, recurrence, and altered outcomes of anticancer treatments. Therefore, the regulation of cellular senescence and related secretory phenotypes is considered a breakthrough in cancer therapy; moreover, proteins involved in the associated pathways are prospective therapeutic targets. Although studies on the association between cellular senescence and tumors have emerged in recent years, further elucidation of this complex correlation is required for comprehensive knowledge. In this paper, we review the research progress on the correlation between cell aging and metabolism, focusing on the strategies of targeting metabolism to modulate cellular senescence and the progress of relevant research in the context of anti-tumor therapy. Finally, we discuss the significance of improving the specificity and safety of anti-senescence drugs, which is a potential challenge in cancer therapy.


Asunto(s)
Antineoplásicos , Senescencia Celular , Neoplasias , Senescencia Celular/efectos de los fármacos , Humanos , Neoplasias/tratamiento farmacológico , Neoplasias/metabolismo , Neoplasias/patología , Animales , Antineoplásicos/farmacología , Antineoplásicos/uso terapéutico
5.
J Gynecol Oncol ; 35(4): e96, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38710530

RESUMEN

OBJECTIVE: This study aimed to comprehensively analyze the clinical characteristics and treatment status of Chinese small cell carcinoma of the ovary hypercalcemic type (SCCOHT) patients, providing insights into this unique population and comparing findings with international literature. METHODS: Through a meta-analysis, we collected data from published case reports and records from the Obstetrics & Gynecology Hospital of Fudan University. Demographic information, clinical presentations, tumor attributes, treatment modalities, and survival outcomes were extracted and examined alongside relevant global studies. RESULTS: The analysis encompassed 80 Chinese SCCOHT patients, of which 62 from 33 previously reported literatures, and the other 18 were from Obstetrics & Gynecology Hospital of Fudan University. In 62 cases with stage information, A total of 25 tumors were International Federation of Gynecology and Obstetrics stage I, 3 were stage II, 19 were stage III, and 15 were stage IV. Most patients received surgery and chemotherapy, but regimens were varied. Median follow-up was 10 months (range=4-120). Elevated carbohydrate antigen 125 and serum calcium levels were consistent findings. Recurrence rates were notable, especially among stage I patients. Platinum-based chemotherapy, paclitaxel and carboplatin (n=11, 13.4%), constituted common treatment regimens. CONCLUSION: This study observed demographic and clinical similarities with international datasets. And the findings emphasize the urgency for innovative therapeutic approaches to improve outcomes in SCCOHT patients. Continued research efforts are essential to enhance the knowledge surrounding this rare malignancy and to optimize its clinical management.


Asunto(s)
Carcinoma de Células Pequeñas , Hipercalcemia , Neoplasias Ováricas , Humanos , Femenino , Neoplasias Ováricas/terapia , Neoplasias Ováricas/patología , Neoplasias Ováricas/mortalidad , Hipercalcemia/etiología , Carcinoma de Células Pequeñas/terapia , Carcinoma de Células Pequeñas/patología , Carcinoma de Células Pequeñas/mortalidad , Persona de Mediana Edad , Adulto , China/epidemiología , Anciano , Estadificación de Neoplasias , Paclitaxel/administración & dosificación , Carboplatino/administración & dosificación , Pueblo Asiatico , Antígeno Ca-125/sangre , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Pueblos del Este de Asia
7.
Eur J Obstet Gynecol Reprod Biol ; 297: 270-274, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38604920

RESUMEN

Small cell carcinoma of the ovary, hypercalcemic type (SCCOHT) is a rare but highly aggressive ovarian malignant neoplasm lacking a unified clinical management process. Most patients are diagnosed at an advanced stage and have an extremely poor prognosis with an overall probability of survival less than 10 %. Here, we describe the case of a patient with advanced SCCOHT achieved a survival of over 5 years after receiving multiple cycles of immunotherapy combined with anti-angiogenic therapy or CDK4/6 inhibitors. At the same time, we also summarized the case reports and clinical trials of immunotherapy in SCCOHT.


Asunto(s)
Carcinoma de Células Pequeñas , Hipercalcemia , Inmunoterapia , Neoplasias Ováricas , Humanos , Femenino , Neoplasias Ováricas/terapia , Neoplasias Ováricas/tratamiento farmacológico , Carcinoma de Células Pequeñas/terapia , Carcinoma de Células Pequeñas/tratamiento farmacológico , Hipercalcemia/terapia , Hipercalcemia/etiología , Inmunoterapia/métodos , Persona de Mediana Edad , Inhibidores de la Angiogénesis/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico
8.
Biol Reprod ; 111(2): 361-375, 2024 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-38630889

RESUMEN

It has been well established that there is a connection between polycystic ovary syndrome pathology and gut microbiome dysbiosis. A marine-derived oligosaccharide, GV-971, has been reported to alter gut microbiota and alleviate Aß amyloidosis. In this study, the effects of GV-971 on polycystic ovary syndrome-like mice were explored. Mice were randomly assigned into four groups: control, letrozole, letrozole + GV-971, and control + GV-971. Glucose metabolism in polycystic ovary syndrome-like mice was ameliorated by GV-971, while the reproductive endocrine disorder of polycystic ovary syndrome-like mice was partially reversed. The messenger ribonucleic acid levels of steroidogenic enzymes in ovaries of polycystic ovary syndrome-like mice were improved. GV-971 restored the fertility of polycystic ovary syndrome-like mice and significantly increase the number of litters. Furthermore, GV-971 treatment effectively mitigated abnormal bile acid metabolism. Notably, after GV-971 intervention, gut microbiota alpha-diversity was considerably raised and the relative abundance of Firmicutes was reduced. In conclusion, the hyperinsulinemia and hyperandrogenemia of polycystic ovary syndrome-like mice were alleviated by GV-971 intervention, which was associated with mitigating bile acid metabolism and modulating gut microbiota.


Asunto(s)
Microbioma Gastrointestinal , Letrozol , Síndrome del Ovario Poliquístico , Animales , Letrozol/farmacología , Femenino , Microbioma Gastrointestinal/efectos de los fármacos , Ratones , Síndrome del Ovario Poliquístico/inducido químicamente , Síndrome del Ovario Poliquístico/metabolismo , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Modelos Animales de Enfermedad , Oligosacáridos/farmacología , Reproducción/efectos de los fármacos
9.
Clin Chim Acta ; 557: 117860, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-38508572

RESUMEN

BACKGROUND: Polycystic ovary syndrome (PCOS) is a common infertility disorder which affects reproductive-aged women. However, metabolic change profiles of follicular fluid (FF) in lean and obese women diagnosed with and without PCOS remains unclear. METHODS: 95 infertile women were divided into four subgroups: LC (lean control), OC (overweight control), LP (lean PCOS), and OP (overweight PCOS). The FF samples were collected during oocyte retrieval and assayed by ultra-performance liquid chromatography coupled with mass spectrometry (UPLC-MS) metabolomics. RESULTS: A total of 236 metabolites were identified by metabolic analysis. The pathway enrichment analysis revealed that the glycerophospholipid metabolism (impact = 0.11182), ether lipid metabolism (impact = 0.14458), and primary bile acid biosynthesis (impact = 0.03267) were related to metabolic pathway between PCOS and control. Correlation analyses showed that epitestosterone sulfate was found positively correlated with fertilization rate in PCOS, while falcarindione, lucidone C. and notoginsenoside I was found to be negatively correlated. The combined four biomarkers including lucidone C, epitestosterone sulfate, falcarindione, and notoginsenoside I was better in predicting live birth rate, with AUC of 0.779. CONCLUSION: The follicular fluid of women with PCOS showed unique metabolic characteristics. Our study provides better identification of PCOS follicular fluid metabolic dynamics, which may serve as potential biomarkers of live birth.


Asunto(s)
Ciclopentanos , Infertilidad Femenina , Síndrome del Ovario Poliquístico , Embarazo , Femenino , Humanos , Adulto , Líquido Folicular/metabolismo , Nacimiento Vivo , Síndrome del Ovario Poliquístico/diagnóstico , Síndrome del Ovario Poliquístico/metabolismo , Infertilidad Femenina/diagnóstico , Cromatografía Líquida con Espectrometría de Masas , Sobrepeso , Epitestosterona/análisis , Epitestosterona/metabolismo , Cromatografía Liquida , Espectrometría de Masas en Tándem , Fertilización In Vitro , Biomarcadores/análisis , Sulfatos/análisis , Sulfatos/metabolismo
10.
Protein Cell ; 15(7): 512-529, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38167949

RESUMEN

Polycystic ovary syndrome (PCOS) is the leading cause of anovulatory infertility. Inadequate understanding of the ovulation drivers hinders PCOS intervention. Herein, we report that follicle stimulating hormone (FSH) controls follicular fluid (FF) glutamine levels to determine ovulation. Murine ovulation starts from FF-exposing granulosa cell (GC) apoptosis. FF glutamine, which decreases in pre-ovulation porcine FF, elevates in PCOS patients FF. High-glutamine chow to elevate FF glutamine inhibits mouse GC apoptosis and induces hormonal, metabolic, and morphologic PCOS traits. Mechanistically, follicle-development-driving FSH promotes GC glutamine synthesis to elevate FF glutamine, which maintain follicle wall integrity by inhibiting GC apoptosis through inactivating ASK1-JNK apoptotic pathway. FSH and glutamine inhibit the rapture of cultured murine follicles. Glutamine removal or ASK1-JNK pathway activation with metformin or AT-101 reversed PCOS traits in PCOS models that are induced with either glutamine or EsR1-KO. These suggest that glutamine, FSH, and ASK1-JNK pathway are targetable to alleviate PCOS.


Asunto(s)
Hormona Folículo Estimulante , Glutamina , Células de la Granulosa , Ovulación , Síndrome del Ovario Poliquístico , Animales , Femenino , Células de la Granulosa/metabolismo , Células de la Granulosa/efectos de los fármacos , Glutamina/metabolismo , Ratones , Hormona Folículo Estimulante/metabolismo , Síndrome del Ovario Poliquístico/metabolismo , Síndrome del Ovario Poliquístico/patología , Humanos , Apoptosis/efectos de los fármacos , MAP Quinasa Quinasa Quinasa 5/metabolismo , MAP Quinasa Quinasa Quinasa 5/genética , Porcinos , Ratones Endogámicos C57BL
11.
Mater Today Bio ; 24: 100904, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38130428

RESUMEN

Late detection, peritoneal dissemination, chemoresistance and weak response to targeted therapeutics lead to high mortality in ovarian cancer. More efficient and specific tumor imaging and therapeutic agents are needed to improve the resection rate of surgery and to eliminate residual disease. The expression patterns of follicle-stimulating hormone (FSH) receptor make it a suitable target for ovarian cancer. Here, we report a strategy to develop an organic near-infrared probe for FSH receptor-targeted tumor imaging and photothermal therapy. The FSH-Rh760 probe was conjugated from the Rh760 fluorophore with the FSH ß subunit 33-53 peptide. FSH-Rh760 specifically distinguished peritoneal metastatic ovarian cancerous foci from surrounding normal tissues with a high tumor-to-background ratio. The fluorescence signals in tumors peaked at 2 h and were cleared at 120 h postinjection. FSH-Rh760 treatment rapidly increased the abdomen temperature of mice up to ∼43 °C upon exposure to a near-infrared laser and effectively suppressed peritoneal tumor growth with tumor specificity. No significant systemic toxicities were observed. This study demonstrates the targeting ability and biocompatibility of FSH receptor-targeted theranostics and highlights its potential for clinical application in imaging-guided precision tumor resection and photothermal therapy to eliminate cancer lesions intraoperatively and postoperatively.

12.
J Med Virol ; 95(12): e29262, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-38037452

RESUMEN

This study aims to characterize the genetic variability of HPV58, identify novel lineages and sublineages, and explore the association between persistent/multiple HPV58 infections and genetic variation. In this study, samples from 124 women with HPV58 infection in Eastern China were collected and 81 isolates of E6 and L1 full-length genes were successfully amplified from 55 samples. We evaluated the diversity of genetic variants and performed correlation analyses between genetic variability and pathology, vaccination, multiple infections, and persistent infections. Among the E6 and L1 gene sequences collected, the dominant prevailing sublineages were A1 (46.2%) and A2 (23.1%). In addition, we found two potential novel sublineages denoted as the A4 and A5 sublineage. A total of 50 nucleotide substitutions, including 28 synonymous substitutions and 22 nonsynonymous substitutions, were observed in the E6 and L1 genes. Among them, variants with A388C/K93N substitutions in the E6 gene correlated with persistent infection (≥1 and ≥2 years) (p < 0.005), and C307T/C66C was associated with persistent infection (≥2 years) (p < 0.005). Notably, two mutations above were detected in the isolate from the patient with breakthrough vaccine infection. Our study found two novel sublineages and sites of genetic variability in multiple and persistent infection variants. In addition, we identified two mutational sites associated with persistent infection. This study provides new insight into the clinical characteristics of HPV 58 genetic variations and offers new ideas for research on next-generation vaccines in Eastern China.


Asunto(s)
Proteínas Oncogénicas Virales , Infecciones por Papillomavirus , Neoplasias del Cuello Uterino , Humanos , Femenino , Proteínas Oncogénicas Virales/genética , Infección Persistente , Virus del Papiloma Humano , Filogenia , Papillomaviridae/genética , China/epidemiología , Infecciones por Papillomavirus/complicaciones , Variación Genética
13.
Mol Imaging ; 2023: 6674054, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38089464

RESUMEN

Objective: In this study, we utilized gonadotropin-releasing hormone analogue-modified indocyanine green (GnRHa-ICG) to improve the accuracy of intraoperative recognition and resection of endometriotic lesions. Methods: Gonadotropin-releasing hormone receptor (GnRHR) expression was detected in endometriosis tissues and cell lines via immunohistochemistry and western blotting. The in vitro binding capacities of GnRHa, GnRHa-ICG, and ICG were determined using fluorescence microscopy and flow cytometry. In vivo imaging was performed in mouse models of endometriosis using a near-infrared fluorescence (NIRF) imaging system and fluorescence navigation system. The ex vivo binding capacity was determined using confocal fluorescence microscopy. Results: GnRHa-ICG exhibited a significantly stronger binding capacity to endometriotic cells and tissues than ICG. In mice with endometriosis, GnRHa-ICG specifically imaged endometriotic tissues (EMTs) after intraperitoneal administration, whereas ICG exhibited signals in the intestine. GnRHa-ICG showed the highest fluorescence signals in the EMTs at 2 h and a good signal-to-noise ratio at 48 h postadministration. Compared with traditional surgery under white light, targeted NIRF imaging-guided surgery completely resected endometriotic lesions with a sensitivity of 97.3% and specificity of 77.8%. No obvious toxicity was observed in routine blood tests, serum biochemicals, or histopathology in mice. Conclusions: GnRHa-ICG specifically recognized and localized endometriotic lesions and guided complete resection of lesions with high accuracy.


Asunto(s)
Endometriosis , Verde de Indocianina , Humanos , Femenino , Animales , Ratones , Endometriosis/diagnóstico por imagen , Endometriosis/cirugía , Endometriosis/metabolismo , Diagnóstico por Imagen , Modelos Animales de Enfermedad , Hormona Liberadora de Gonadotropina , Imagen Óptica/métodos
14.
Reprod Biol Endocrinol ; 21(1): 90, 2023 Oct 02.
Artículo en Inglés | MEDLINE | ID: mdl-37784186

RESUMEN

In human female primordial germ cells, the transition from mitosis to meiosis begins from the fetal stage. In germ cells, meiosis is arrested at the diplotene stage of prophase in meiosis I (MI) after synapsis and recombination of homologous chromosomes, which cannot be segregated. Within the follicle, the maintenance of oocyte meiotic arrest is primarily attributed to high cytoplasmic concentrations of cyclic adenosine monophosphate (cAMP). Depending on the specific species, oocytes can remain arrested for extended periods of time, ranging from months to even years. During estrus phase in animals or the menstrual cycle in humans, the resumption of meiosis occurs in certain oocytes due to a surge of luteinizing hormone (LH) levels. Any factor interfering with this process may lead to impaired oocyte maturation, which in turn affects female reproductive function. Nevertheless, the precise molecular mechanisms underlying this phenomenon has not been systematically summarized yet. To provide a comprehensive understanding of the recently uncovered regulatory network involved in oocyte development and maturation, the progress of the cellular and molecular mechanisms of oocyte nuclear maturation including meiosis arrest and meiosis resumption is summarized. Additionally, the advancements in understanding the molecular cytoplasmic events occurring in oocytes, such as maternal mRNA degradation, posttranslational regulation, and organelle distribution associated with the quality of oocyte maturation, are reviewed. Therefore, understanding the pathways regulating oocyte meiotic arrest and resumption will provide detailed insight into female reproductive system and provide a theoretical basis for further research and potential approaches for novel disease treatments.


Asunto(s)
Oocitos , Oogénesis , Animales , Femenino , Humanos , Oogénesis/genética , Oocitos/metabolismo , Meiosis , Profase Meiótica I , Folículo Ovárico
15.
Biochem Biophys Res Commun ; 681: 225-231, 2023 11 12.
Artículo en Inglés | MEDLINE | ID: mdl-37783121

RESUMEN

The commitment of mesenchymal stem cells (MSCs) to preadipocytes and the termination of differentiation to adipocytes are critical for maintaining systemic energy homeostasis. However, our knowledge of the molecular mechanisms governing the commitment of MSCs to preadipocytes and the subsequent termination of their differentiation into adipocytes remain limited. Additionally, the role of Sox6 sex-determining region Y (SRY)-box6 (Sox6), a transcription factor that regulates gene transcription, is reportedly involved in various cellular processes, including adipogenesis; however, its function in regulating preadipocyte development and the factors involved in the termination of adipogenic differentiation remain unexplored. Therefore, we investigated the role of Sox6 in regulating the differentiation of adipocytes by monitoring the effects of its overexpression in C3H10T1/2 cells (in vitro) and C57BL/6J mouse (in vivo) models of adipogenesis. We observed lower Sox6 expression in the adipose tissue of obese mice than that in control mice. Sox6 overexpression inhibited the differentiation of MSC by directly binding to the lysyl oxidase (Lox) and preadipocyte factor 1 (Pref1) promoters, which was potentiated by histone deacetylase-1(HDAC1). Our findings suggest that Sox6 is a key regulator of MSC commitment to adipocytes; therefore, targeting the Sox6-mediated regulation of this process could offer potential therapeutic avenues for addressing obesity and related metabolic disorders.


Asunto(s)
Adipogénesis , Células Madre Mesenquimatosas , Animales , Ratones , Adipogénesis/genética , Diferenciación Celular/genética , Ratones Endogámicos C57BL , Proteína-Lisina 6-Oxidasa/genética , Proteína-Lisina 6-Oxidasa/metabolismo , Factores de Transcripción SOXD/genética , Factores de Transcripción SOXD/metabolismo
16.
Int J Mol Sci ; 24(19)2023 Sep 23.
Artículo en Inglés | MEDLINE | ID: mdl-37833926

RESUMEN

Ovarian cancer is the leading cause of gynecologic cancer-related death, and PARP inhibitors (PARPis) are becoming a promising treatment option, as demonstrated by recent clinical trials. After PARPi exposure, somatic reversion mutations in the homologous recombination genes may be a mechanism of PARPi resistance in ovarian carcinoma. We present an ovarian cancer case of a 61-year-old woman, who underwent routine tumor reduction surgery followed by platinum and PARPis. She demonstrated a good response to PARPis for 15 months before recurrence and secondary tumor reduction surgery. However, post-surgery platinum and PARPi treatment only kept the disease stable for 5 months. A potential molecular mechanism for PARPi resistance was investigated using next-generation sequencing, immunohistochemical (IHC) staining, and other functional assays. A germline RAD51D loss-of-function mutation was found in the reported case (LRG_516t1:c.270_271dup p1:p.(Lys91fs*13)). Subsequently, a secondary mutation (LRG_516t1:c.271_282 del) was identified in the same locus of the germline duplication in the post-progression biopsies and ctDNA. The IHC staining supported low expression of RAD51D in the initial tumor tissue, but the expression was restored after the correction of the open reading frame by the secondary mutation. The in vitro results supported that the loss-of-function mutation of RAD51D was the basis for the initial response to the platinum and PARPi therapy, while the newly acquired reversion mutation could be attributed to the observed PARPi resistance. An acquired mutation can reverse a loss-of-function change in RAD51D and can result in PARPi resistance in a hereditary ovarian cancer patient. Liquid biopsy could be considered for longitudinal monitoring in ovarian patients under PARPi-based therapy, which can identify acquired resistant mutations earlier and facilitate precision management.


Asunto(s)
Resistencia a Antineoplásicos , Neoplasias Ováricas , Inhibidores de Poli(ADP-Ribosa) Polimerasas , Femenino , Humanos , Persona de Mediana Edad , Carcinoma Epitelial de Ovario/tratamiento farmacológico , Proteínas de Unión al ADN/genética , Resistencia a Antineoplásicos/genética , Mutación , Neoplasias Ováricas/tratamiento farmacológico , Neoplasias Ováricas/genética , Neoplasias Ováricas/patología , Platino (Metal)/farmacología , Inhibidores de Poli(ADP-Ribosa) Polimerasas/farmacología , Inhibidores de Poli(ADP-Ribosa) Polimerasas/uso terapéutico
17.
Front Endocrinol (Lausanne) ; 14: 1177061, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37720535

RESUMEN

Chronic stress is suspected to be a causal factor of female subfertility; however, the underlying mechanisms remain unclear. Here, we found that chronic stress inhibited the cyclic adenosine 3',5'-monophosphate (cAMP) signaling pathway, leading to ovarian reserve decline in mice. A chronic stress model was constructed using restraint stress for 8 weeks. An elongated estrous cycle and a significant increase in the number of atretic follicles were observed in the stress group. We identified a significant increase in meiotic arrest failure (MAF) in oocytes in the stress group, characterized by condensed metaphase chromosomes, assembled spindles, or polar bodies in the oocytes. Whole-mount ovarian reserve estimation at the single-oocyte level using the CUBIC method (clear, unobstructed brain/body imaging cocktails and computational analysis) revealed a significant decrease in quiescent oocytes from 2,261/ovary in the control group to 1,373/ovary in the stress group. The number of growing oocytes also significantly decreased from 220/ovary in the control group to 150/ovary in the stress group. Real-time quantitative polymerase chain reaction (RT-qPCR) analysis of the meiotic arrest maintenance pathways revealed significant downregulation of Gpr3, Nppc, and Npr2 in the stress group. These results indicate that blocking cAMP production contributes to MAF and a decline in ovarian reserve. Overall, we present new insights into the mechanisms underlying chronic-stress-induced oocyte loss and potential targets for ovarian reserve preservation.


Asunto(s)
Reserva Ovárica , Femenino , Animales , Ratones , Oocitos , Ovario , Transducción de Señal , Folículo Ovárico
18.
Hum Cell ; 36(6): 2214-2227, 2023 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-37535222

RESUMEN

Small cell carcinoma of the ovary hypercalcemic type (SCCOHT) is a rare and aggressive malignancy that poses a significant clinical challenge due to its grim prognosis. Unfortunately, only three SCCOHT cell lines are currently available for scientific research. In this study, we have successfully established a novel SCCOHT cell line from a recurrent lesion of a SCCOHT patient, named SCCOHT-CH-1. We comprehensively characterized the novel cell line by employing techniques such as morphological observation, CCK-8 assay, Transwell assay, clone formation assay, short tandem repeat sequence (STR) analysis, karyotype analysis, immunohistochemical staining, western blot assay, and xenograft tumor formation assay. SCCOHT-CH-1 cells were small circular and had a unique STR profile. The population-doubling time of SCCOHT-CH-1 was 33.02 h. The cell line showed potential migratory and invasive ability. Compared with another SCCOHT cell line COV434, SCCOHT-CH-1 exhibited higher expression of AKT, VIM, and CCND1. At the same time, SCCOHT-CH-1 has the ability of tumorigenesis in vivo. We also successfully constructed three patient-derived xenograft (PDX) models of SCCOHT, which were pathologically diagnosed to be consistent with the primary tumor, accompanied by loss of SAMRCA4 protein expression. The establishment of SCCOHT-CH-1 cell line and PDX models from Chinese people represent a pivotal step toward unraveling the molecular mechanism of SCCOHT and fostering the development of targeted interventions to tackle this challenging malignancy.

19.
Gynecol Oncol ; 176: 43-52, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37442025

RESUMEN

OBJECTIVE: This study aimed to determine the prognostic significance of positive peritoneal cytology (PC) on endometrial carcinoma (EC) patients under the ESGO/ESTRO/ESP risk classification. METHODS: This study retrospectively analyzed EC patients from 27 medical centers in China from 2000 to 2019. Patients were divided into three ESGO risk groups: low-risk, intermediate-risk and high-intermediate risk, and high-risk groups. The covariates were balanced by using the propensity score-based inverse probability of treatment weighting (PS-IPTW). The prognostic significance of PC was assessed by Kaplan-Meier curves and multivariate Cox regression analysis. RESULTS: A total of 6313 EC patients with PC results were included and positive PC was reported in 384 women (6.1%). The multivariate Cox analysis in all patients showed the positive PC was significantly associated with decreased PFS (hazard ratio [HR] 2.20, 95% confidence interval [CI] 1.55-3.13, P < 0.001) and OS (HR 2.25, 95% CI 1.49-3.40, P < 0.001),and the Kaplan-Meier curves also showed a poor survival in the intermediate and high-intermediate risk group (5-year PFS: 75.5% vs. 93.0%, P < 0.001; 5-year OS: 78.3% vs. 96.4%, P < 0.001); While in the low-risk group, there were no significant differences in PFS and OS between different PC status (5-year PFS: 93.1% vs. 97.3%, P = 0.124; 5-year OS: 98.6% vs. 98.2%, P = 0.823); in the high-risk group, significant difference was only found in PFS (5-year PFS: 62.5% vs. 77.9%, P = 0.033). CONCLUSION: Positive PC was an adverse prognostic factor for EC, especially in the intermediate and high-intermediate risk patients. Gynecologic oncologists should reconsider the effect of positive PC on different ESGO risk groups.


Asunto(s)
Citología , Neoplasias Endometriales , Femenino , Humanos , Pronóstico , Estudios Retrospectivos , Neoplasias Endometriales/patología , Peritoneo/patología
20.
Front Oncol ; 13: 1166818, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37476381

RESUMEN

Background: Loop electrosurgical excision procedure (LEEP) conization and hysterectomy are performed for some patients with papillary squamous cell carcinoma (PSCC), whereas only hysterectomy is performed for others. We aimed to determine the optimal management for PSCC. Methods: Patients diagnosed with PSCC by colposcopy-directed biopsy between June 2008 and January 2020 who underwent LEEP conization and hysterectomy or only hysterectomy at our hospital were enrolled. Results of cervical cytology, high-risk human papillomavirus testing, transvaginal sonography, pelvic magnetic resonance imaging, LEEP, hysterectomy, and pathology testing of colposcopy-directed biopsy samples were analyzed. Results: A total of 379 women were diagnosed with PSCC by colposcopy-directed biopsy; 174 underwent LEEP before hysterectomy and 205 underwent only hysterectomy. Patients underwent and did not undergo LEEP were aged 47 ± 11 years and 52 ± 11 years, respectively. Among women who underwent LEEP, the agreement between LEEP and hysterectomy pathology was 85.1%. For women who underwent only hysterectomy, the agreement between preoperative clinical staging and pathological staging after hysterectomy was 82.4%. For patients with preoperative imaging indicative of malignancy, the accuracy of LEEP for diagnosing and staging PSCC was 88.5%, whereas for the hysterectomy-only group, it was 86.2%. For patients without malignancy detected with imaging, the accuracy of LEEP for diagnosing and staging PSCC was 81.6%; however, for those who did not undergo LEEP, it was 70.0%. Conclusion: For women diagnosed with PSCC by colposcopy-directed biopsy, LEEP conization is necessary for an accurate diagnosis when imaging does not indicate cancer; however, LEEP is not necessary when imaging indicates cancer.

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