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【Objective】 To analyze the clinical and pathological characteristics of mucinous tubular and spindle cell carcinoma （MTSCC） in the kidney so as to evaluate the value of radiotherapy in local treatment of refractory MTSCC. 【Methods】 A case of MTSCC with recurrent recurrence and metastasis was reported， and the existing literature on MTSCC was reviewed and analyzed to explore the value of radiotherapy in the treatment of MTSCC. 【Results】 After three operations， postoperative pathology of the patient showed mucinous tubular and spindle cell carcinoma of the kidney. Radiotherapy was performed in the first recurrence area， and long-term follow-up in the tumor bed area showed no recurrence. 【Conclusion】 MTSCC， a rare renal epithelial tumor， has the low-grade malignance in most cases， and rarely recurs and has metastasis. This patient had repeated recurrence and metastasis before surgery， but after tumor bed radiotherapy after the first recurrence no lesion was found， suggesting that radiotherapy plays a certain role in preventing local recurrence. It is necessary to further explore the value of radiotherapy in the treatment of MTSCC.
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【Objective】 To clone the full-length of human kidney and brain protein (KIBRA) coding sequence in eukaryotic expression vector and provide a model for studying the biological function of KIBRA in breast cancer cells. 【Methods】 Total RNA of human breast cancer cell line MCF7 was extracted. After reverse transcription, the full length of KIBRA (NM_001161661.2) coding region was amplified by PCR, and cloned into eukaryotic expression vector pCMV-Blank. After identification, it was defined officially as pCMV-KIBRA. Then it was transfected into MCF7 cells, and the expression of KIBRA was detected by real-time PCR and Western blotting after 48 hours. The primary, secondary and tertiary structures and post-transcriptional modification sites of KIBRA were analyzed with bioinformatics software. 【Results】 Bacterial PCR, double enzyme digestion and DNA sequencing results showed that the correct sequence of KIBRA was inserted into the vector pCMV-KIBRA. The mRNA and protein expressions of KIBRA were significantly increased in MCF7 cells transfected with pCMV-KIBRA. Bioinformatics analysis showed that KIBRA was composed of 1119 amino acids. There were 52 phosphorylation sites, 1 acetylation site and 5 ubiquitination sites, and the protein structure was mainly α-helix and random coil. 【Conclusion】 The eukaryotic expression vector of full-length of human KIBRA coding sequence was successfully constructed and overexpressed in breast cancer cell line MCF7, which can lay a foundation for studying the biological function of KIBRA in breast cancer.
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Purpose To explore the role of cell blocks combined with immunohistochemical examination in the diagnosis and differential diagnosis of malignant pleural effusion,and to explore the role of pleural effusion cell blocks in lung adenocarcinoma molecular pathology examination.Methods 142 cases of malignant pleural effusion based cytology,cell blocks of HE staining and immunohistochemical staining by EnVision twostep were retrospectively analysed,the tumor classification was made through analyzing the characteristics of the cells combined with antibody expression.The detection of epidermal growth factor receptor (EGFR) gene mutation of 40 cases of lung adenocarcinoma diagnosed after immunohistochemical staining were used by ARMS-PCR method.Results Among 142 cases of malignant pleural effusion,there were 99 cases caused by lung adenocarcinoma,4 cases of lung small cell carcinoma,3 cases of lung squamous cell carcinoma,13 cases of breast carcinoma,9 cases of ovarian carcinoma,2 cases of gastric carcinoma,1 case of thyroid carcinoma,1 case of endometrial carcinoma,5 cases of mesothelioma,3 cases of lymphoma,1 case of malignant melanoma,1 case of synovial sarcoma.In 40 cases of lung adenocarcinoma pleural effusion cell block,there were 20 cases with EGFR mutations,9 cases of 19del mutations and 11 cases L858R mutations.Conclusion The pleural effusion cell blocks combined immunohistochemistry are useful to improve the accuracy of diagnosis of patients with pleural effusion,and helpful for the determination of classification and the primary site of tumor,assessment of prognosis.Pleural dffusion cell block may used to detect EGFR mutations of lung adenocarcinoma,which provide new source of specimen for the gene detection of lung adenocarcinoma.
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Chemokine is a small protein which plays an impor-tant role in men's physiological function.It has chemotactic ac-tivity and is often secreted by immune cells and glial cells like microglia or astrocytes.Through the effect of chemokine recep-tors on target cells,various immune cells can achieve directional migration and play an important role in the diseases related with immunity and inflammation.CCL2,also known as monocyte chemotactic protein-1 (MCP-1 ),is one member of chemokine CC subfamily (βsubfamily).It can chemokine monocytes, macrophages and T lymphocytes to affect their phagocytosis func-tion and produce antibodies to combat invading microorganisms. In recent years,it has been found that CCL2 plays a key role in the occurrence and development of the problems concerning cen-tral nervous system and immune system as well as cancer, AIDS,leukemia,diabetes and other diseases.This thesis is to give an elaboration on the latest research on CCL2 and the rele-vant diseases.
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Since Parkin was confirmed by the Japanese scholar to be associated with juvenile Parkinson′s disease, it has come to be the focus of the scholars and a lot of researches have been made on it. Apart from Parkinson′s disease, many other disea-ses have also been proved to be associated with the role of Parkin and its interaction with protein substrates, especially in various kinds of cancer diseases and leukemia. This paper focuses on the latest research about Parkin and its development in tumor diseases and leukemia.
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<p><b>OBJECTIVE</b>To correlate morphological features with mutations of epidermal growth factor receptor (EGFR) in lung adenocarcinomas.</p><p><b>METHODS</b>According to 2011 International Association for the Study of Lung Cancer/American Thoracic Society/European Respiratory Society International Multidisciplinary Lung Adenocarcinoma Classification, a total of 72 surgically resected lung adenocarcinomas were collected and classified into different histological subtypes and different cell types (hobnail, columnar and polygonal). EGFR gene mutation was detected with the amplification refractory mutation method provided by the EGFR mutation test kit. The correlation between these subtypes and EGFR mutations were evaluated.</p><p><b>RESULTS</b>Mutations of EGFR were detected in 48.6% (35/72) of lung adenocarcinomas; 19del and L858R were major mutational types (88.6%, 31/35). EGFR mutations were associated with female gender, non-smoking status, and well to moderately differentiated tumor histology. EGFR mutation types were not associated with age, smoking index, lymph node metastasis, stage, status of whether have or not have inclusion bodies or psammoma bodies and mitotic level. Correlations were observed between acinar and papillary adenocarcinoma subtypes and EGFR mutations according to the new classification. EGFR mutation was rare in the subtype of solid adenocarcinoma with mucin production and almost never observed in special subtypes (mainly mucinous and colloid adenocarcinoma). In addition, EGFR mutation was associated with the hobnail cell type.</p><p><b>CONCLUSION</b>Lung adenocarcinomas of predominate acinar and papillary histological subtypes with hobnail cell morphology are good predictors for EGFR mutations.</p>
Subject(s)
Female , Humans , Male , Adenocarcinoma , Genetics , Pathology , Adenocarcinoma, Mucinous , Genetics , Pathology , Adenocarcinoma, Papillary , Genetics , Pathology , Genes, erbB-1 , Lung Neoplasms , Genetics , Pathology , Lymphatic Metastasis , Mutation , ErbB Receptors , Genetics , Sex Factors , SmokingABSTRACT
Aim To examine the inhibitory effect of re-combinant cardiac troponin fusion protein composed of subunit I and artificial peptide which was called CIS on tumor growth. Methods The CIS ’ s effect on the growth of human umbilical vein endothelial cells ( HU-VEC) was examined using MTT assay in vitro. Chick chorioallantoic membrane model was applied to study the alteration of angiogenesis treated with purified re-combinant CIS protein. The effect of tumor growth trea-ted with CIS was observed using several in vivo mice xenograft models. Results There was a statistically significant reduction in HUVEC cell proliferative rate when the cells were treated with purified CIS fusion protein, which was also shown in a dose-dependent manner. A decreased amount of new blood vessel for-mation ( angiogenesis) on chick embryo chorioallantoic membranes was observed in recombinant CIS protein treated group compared to the untreated control group. A significant inhibition of tumor growth rate was a-chieved in CIS treated mice compared to CIS untreated control mice in 6 different mouse xenograft models. Conclusions The fusion protein CIS shows the inhibi-tory effect on the tumor growth in our in vivo mouse models, and such inhibition could be mediated by the mechanism of CIS’ s effect on the decrease of HUVEC cell proliferation and further the reduction of angiogen-esis in tumor tissues. This work could provide the foundation for the in-depth investigations on the phar-maceutical application of CIS targeting anti-tumor ther-apy.
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Objective To determine the expression of macrophage migration inhibitory factor (MIF)in different molecular subtypes of breast cancer and its clinical significance so as to detect the biological markers of different molecular subtypes of breast cancer.Methods We divided 100 breast cancer patients into four molecular subtypes by immunostaining:luminal subtype,HER-2(+)subtype,basal-like (BLs)subtype and normal breast-like (NBLs)subtype,and then compared the expression of MIF in the groups.We analyzed the associations of MIF-positive expression rate with age,menstruation,tumor size,auxiliary lymph node metastasis,histological type and grade,and clinical stage of the breast cancer patients.We also compared MVD level and 5-year overall survival rate between MIF-positive patients and MIF-negative ones.Results The positive expression of MIF was correlated with HER2(+)subtype breast cancer and auxiliary lymph node metastasis (P < 0.05 ).The patients with MIF-positive expression had a significantly higher level of MVD than those with MIF-negative expression (P < 0.05 ). Kaplan-Meier method showed that MIF-positive patients had a poor prognosis than MIF-negative ones (Log-rank=1 9.5 1 6,P = 0.000).Conclusion Breast cancer patients with MIF-positive expression may be mostly of HER2 (+)subtype,and tend to develop auxiliary lymph node metastasis.These patients have a significantly higher level of MVD and poor prognosis than those with MIF-negative expression.
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Neoplasms of perivascular epithelioid cells (PEComas) are characterized by epithelioid to spindle cells with eosinophilic to clear cytoplasm, an intimate relationship with blood vessels, and coexpression of myoid and melanocytic immunohistochemical markers. While most reported hepatic PEComas, such as angiomyolipoma (AML), behave in a benign fashion, emerging PEComas cases without typical characteristics require further clarification. We report a case of primary hepatic perivascular epithelioid cell tumors-not otherwise specified (HPEComas-NOS) with untypical pathological and immunohistochemical features compared to those of the benign hepatic AML cases. HPEComas-NOS may represent a special type of PEComas classified as having "malignant potential" or at "high risk of aggressive behavior", suggesting the need for further clarification of hepatic PEComas and long-term follow-up of patients with HPEComas-NOS.