scholarly journals Ovarian Carcinosarcoma with Retroperitoneal Para-Aortic Lymph Node Dissemination Followed by an Unusual Postoperative Complication: A Case Report with a Brief Literature Review

Diagnostics ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1073
Author(s):  
Stoyan Kostov ◽  
Yavor Kornovski ◽  
Yonka Ivanova ◽  
Deyan Dzhenkov ◽  
George Stoyanov ◽  
...  
Keyword(s):  
Case Report ◽  
Lymph Node ◽  
Lymph Nodes ◽  
Postoperative Complication ◽  
Abdominal Aorta ◽  
Epithelial Mesenchymal Transition ◽  
Mesenchymal Transition ◽  
Dismal Prognosis ◽  
Paraaortic Lymph Nodes ◽  
Ovarian Carcinosarcoma

Introduction. Ovarian carcinosarcoma (OCS), also known as malignant mixed Müllerian tumour (MMMT), is one of the rarest histological subtypes of ovarian cancer. It is an aggressive tumour with a dismal prognosis—the median survival of patients is less than two years. The rarity of the disease generates many controversies about histogenesis, prognostic factors and treatment of OCS. Histologically, OCS is composed of an epithelial and sarcomatous component. Case report. In the present case, a patient with bilateral ovarian cysts and bulky paraaortic lymph nodes is reported. Retroperitoneal paraaortic lymph node metastases were the only extrapelvic dissemination of OCS. The patient underwent comprehensive surgical staging procedures, including total abdominal hysterectomy and bilateral salpingo-oophorectomy, supracolic omentectomy and selective para-aortic lymphadenectomy. Histologically the ovarian carcinosarcoma was composed of an epithelial component (high-grade serous adenocarcinoma) and three sarcomatous components (homologous—endometrial stromal cell sarcoma, and heterologous—chondrosarcoma, rhabdomyosarcoma). Immunohistochemistry staining was performed. A postoperative complication (adhesion between the abdominal aorta and terminal ileum causing obstructive ileus) that has never been reported in the medical literature occurred. Conclusion. Carcinosarcomas are carcinomas with epithelial–mesenchymal transition and heterologous differentiation. Retroperitoneal pelvic and paraaortic lymph nodes should be carefully inspected in patients with ovarian tumours. Adhesions between the small bowels and abdominal aorta are possible complications after lymph node dissection in the paraaortic region.

scholarly journals ASSOCIATION OF MICRORNA EXPRESSION WITH EARLY STAGE OF BREAST CANCER METASTASIS

2018 ◽  
Vol 23 (3-6) ◽  
pp. 129-133
Author(s):  
Kristina A. Grishina ◽  
N. I Pospekhova ◽  
V. A Khaylenko ◽  
A. V Karpukhin
Keyword(s):  
Breast Cancer ◽  
Lymph Node ◽  
Lymph Nodes ◽  
Mirna Expression ◽  
Molecular Mechanisms ◽  
Cancer Metastasis ◽  
Epithelial Mesenchymal Transition ◽  
Early Stage ◽  
Metastatic Breast ◽  
Mesenchymal Transition

A serious complication of breast cancer is metastasis of tumor cells. The initiation of this process takes place in the nearby lymphatic vessels. To date, the molecular mechanisms of metastasis are not well understood and further research is required. In this regard, the level of miRNA expression can provide information both on the mechanisms of metastasis development and also be a source of markers for the prognosis of metastatic breast cancer. In the present work, according to the literature, we selected four microRNAs (miR-34a, miR-145, miR-125b and miR-222), potentially capable of being associated with metastasis, to study their association with metastasis to lymph nodes at an early stage. The measurement of the expression of four selected miRNAs on 40 paired samples (tumor-norm) was performed using real-time PCR. Frequencies of miR-34a, miR-145, miR-125b, and miR-222 relative to normal tissue were determined for reduced or increased miR-mRNA expression. For a more detailed study of the association of miRNA expression with lymph node metastasis, miR-125b and miR-222 were selected. An association of expression of these two miRNAs was found with the onset of metastasis to the lymph nodes: with the same level of confidence, differences (p = 0.01). Both miRNAs (miR-125b and miR-222) are involved in the metastasis of breast cancer, apparently by influencing the epithelial-mesenchymal transition. They can potentially act as prognostic biomarkers to assess the likelihood of early lymph node metastases in breast cancer.

scholarly journals CHN1 promotes epithelial–mesenchymal transition via the Akt/GSK-3β/Snail pathway in cervical carcinoma

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Haoqi Zhao ◽  
Lan Wang ◽  
Shufang Wang ◽  
Xihua Chen ◽  
Min Liang ◽  
...  
Keyword(s):  
Cell Proliferation ◽  
Lymph Node ◽  
Signaling Pathway ◽  
Cervical Carcinoma ◽  
Epithelial Mesenchymal Transition ◽  
Migration And Invasion ◽  
Xenograft Tumor ◽  
Mesenchymal Transition ◽  
Gsk 3Β ◽  
Related Proteins

Abstract Background Metastasis and invasion are crucial in determining the mortality of cervical carcinoma (CC) patients. The epithelial–mesenchymal transition (EMT) is now a universal explanation for the mechanisms of tumor metastasis. Α-chimeric protein (α-chimaerin, CHN1) plays an important role in the regulation of signal transduction and development. However, the molecular regulatory relationships between CHN1 and CC progression in relation to EMT have not yet been identified. Methods The expression of CHN1 in CC tissues, adjacent tissues, and lymph node metastases from CC patients was detected by immunohistochemistry. Upregulation and knockdown of CHN1 were achieved by transfection of CC cells. The effect of CHN1 on cell proliferation was determined by CCK-8 and plate clone formation assays. Changes in migration and invasion capabilities were evaluated using scratch migration and transwell invasion assays. The effect of CHN1 overexpression and interference on xenograft tumor growth was determined by tumor weight and pathological analyses. The expression of EMT-related mRNAs was measured by qRT-PCR in transfected CC cells. EMT-related proteins and Akt/GSK-3β/Snail signaling pathway-related proteins were also evaluated by western blotting. Results CHN1 was overexpressed in CC tissues and was associated with lymph node metastasis and low survival in CC patients. Overexpression of CHN1 promoted cell proliferation, migration, and invasion in CC cells. In contrast, silencing of CHN1 inhibited these phenomena. Overexpression of CHN1 promoted tumor formation in an in vivo xenograft tumor mouse model, with increased tumor volumes and weights. In addition, CHN1 induced the expression of EMT-related transcription factors, accompanied by the decreased expression of epithelial markers and increased expression of mesenchymal markers. The Akt/GSK-3β/Snail signaling pathway was activated by overexpression of CHN1 in vitro, and activation of this pathway was inhibited by the signaling pathway inhibitor LY294002. Conclusion These results suggest that CHN1 promotes the development and progression of cervical carcinoma via the Akt/GSK-3β/Snail pathway by inducing EMT.

scholarly journals Circular RNA hsa_circ_0000277 sequesters miR-4766-5p to upregulate LAMA1 and promote esophageal carcinoma progression

2021 ◽  
Vol 12 (7) ◽  
Author(s):  
Peng Li Zhou ◽  
Zhengyang Wu ◽  
Wenguang Zhang ◽  
Miao Xu ◽  
Jianzhuang Ren ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Bioinformatics Analysis ◽  
Epithelial Mesenchymal Transition ◽  
Expression Profiles ◽  
Luciferase Reporter ◽  
Migration And Invasion ◽  
Circular Rnas ◽  
Mesenchymal Transition ◽  
Dismal Prognosis ◽  
Advanced Tumor

AbstractGrowing evidence has indicated that circular RNAs (circRNAs) play a pivotal role as functional RNAs in diverse cancers. However, most circRNAs involved in esophageal squamous cell carcinoma (ESCC) remain undefined, and the underlying molecular mechanisms mediated by circRNAs are largely unclear. Here, we screened human circRNA expression profiles in ESCC tissues and found significantly increased expression of hsa_circ_0000277 (termed circPDE3B) in ESCC tissues and cell lines compared to the normal controls. Moreover, higher circPDE3B expression in patients with ESCC was correlated with advanced tumor-node-metastasis (TNM) stage and dismal prognosis. Functional experiments demonstrated that circPDE3B promoted the tumorigenesis and metastasis of ESCC cells in vitro and in vivo. Mechanistically, bioinformatics analysis, a dual-luciferase reporter assay, and anti-AGO2 RNA immunoprecipitation showed that circPDE3B could act as a competing endogenous RNA (ceRNA) by harboring miR-4766-5p to eliminate the inhibitory effect on the target gene laminin α1 (LAMA1). In addition, LAMA1 was significantly upregulated in ESCC tissues and was positively associated with the aggressive oncogenic phenotype. More importantly, rescue experiments revealed that the oncogenic role of circPDE3B in ESCC is partly dependent on the miR-4766-5p/LAMA1 axis. Furthermore, bioinformatics analysis combined with validation experiments showed that epithelial-mesenchymal transition (EMT) activation was involved in the oncogenic functions of the circPDE3B–miR-4766-5p/LAMA1 axis in ESCC. Taken together, we demonstrate for the first time that the circPDE3B/miR-4766-5p/LAMA1 axis functions as an oncogenic factor in promoting ESCC cell proliferation, migration, and invasion by inducing EMT, implying its potential prognostic and therapeutic significance in ESCC.

ASAP1 promotes tumor progression and angiogenesis and independently predicts poor prognosis and lymph node metastasis of gastric cancer

2019 ◽  
Author(s):  
Hongyu Gao ◽  
Ling Qin ◽  
Huawen Shi ◽  
Hongfeng Zhang ◽  
Chunfeng Li ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Lymph Node ◽  
Lymph Node Metastasis ◽  
Tumor Growth ◽  
Tumor Progression ◽  
Epithelial Mesenchymal Transition ◽  
The Cancer Genome Atlas ◽  
Mesenchymal Transition ◽  
Node Metastasis ◽  
Tumor Cell Motility

Abstract Background: Although ArfGAP with SH3 Domain, Ankyrin Repeat and PH Domain 1(ASAP1) is involved in the development of various malignancies, its clinical significance and mechanism in gastric cancer (GC) remains unclear.Methods: The effects of ASAP1 on tumor progression, angiogenesis, and epithelial-mesenchymal transition were evaluated in vitro. The effects of ASAP1 on tumor growth and angiogenesis were also explored in vivo. The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases were used to gather ASAP1 expression data.Results: It showed that ASAP1 expression strongly correlated with the TNM stage (P < 0.0001) and lymph node metastasis (P < 0.0001). Multivariate analyses indicated that ASAP1 overexpression (P < 0.0001) was an independent predictor for overall survival in patients with GC. Moreover, the results revealed that ASAP1 overexpression was independently related to lymph node metastasis (P = 0.0001). ASAP1 knockdown inhibited tumor cell motility, migration, invasion, and angiogenesis, which was accompanied with the downregulation of metastatic and angiogenic biomarkers. Furthermore, ASAP1 inhibition resulted in the simultaneous downregulation of mesenchymal markers and upregulation of epithelial markers. In addition, ASAP1 promoted tumor growth and angiogenesis in the xenograft mice model. The combined datasets (TCGA and GEO) suggested that ASAP1 was associated with malignant behavior of tumor and tumor invasion, metastasis, and angiogenesis.Conclusion: To our knowledge, our study is the first to reveal that ASAP1 promotes tumor progression and angiogenesis, and indicates a prognostic potential in GCs.

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