Project description:Gene expression profile in Locally Advanced Cervical Cancer patients The RNA total samples were obtain from 89 biopsies of patients with locally advanced cervical cancer (staged).
Project description:Cervical cancer is one of the leading causes of cancer related deaths among females. Due to proper screening programmes, most of the cervical cancer cases are presented in the locally advanced stage of the disease. Concurrent chemoradiotherapy (CCRT) is the standard treatment for locally advanced cervical cancer. However, resistance to CCRT limit the success of the treatment regimen. In this study, we investigated the altered phosphoproteome of CCRT resistant and sensitive cohort using Mass spectrometry-based proteomics. We carried out phosphoproteomic analysis of treatment naïve cervical cancer patients whose response to CCRT is recorded. The Phosphoproteomic analysis revealed kinases and the pathways associated with CCRT resistance in cervical cancer patients.
Project description:Twenty-one patients with locally advanced squamous cell carcinoma were enrolled in this study. Primary biopsies harvested prior to therapy were divided according to the patientM-bM-^@M-^Ys 6 months clinical response and analyzed for whole human gene expression (Agilent). A 2859-gene signature was identified to distinguish between responder and non-responder patients. M-bM-^@M-^XDNA Replication, Recombination and RepairM-bM-^@M-^Y represented one of the most important mechanisms activated in non-responsive cervical tumors, and M-bM-^@M-^XRole of BRCA1 in DNA Damage ResponseM-bM-^@M-^Y was predicted to be the most significantly altered canonical pathway involved in intrinsic resistance. The microarray results were validated by qRT-PCR and immunohistochemistry. An additional set of 24 formalin-fixed paraffin-embedded cervical cancer samples was used for independent validation of the proteins of interest. Immunohistological staining confirmed increased expression of BRCA1, BRIP1, FANCD2 and RAD51 in non-responsive compared with responsive advanced squamous cervical cancer, both in the initial set of 21 cervical cancer samples and the second set of 24 samples. Twenty-one patients with locally advanced squamous cell carcinoma (FIGO stage IIB-IIIB) were enrolled in the genomics study. A tissue fragment from a primary biopsy specimen was harvested from each patient prior to the therapy. Tissue samples were stored in liquid nitrogen until use for RNA extraction. One-color microarray experiment was performed to measure differences in gene expression between cervical cancer samples with 6-month complete response (12 patients ) and non-complete response (9 patients). Complet response group was considered as reference.
Project description:The patients with locally advanced squamous cervical cancer (SCC) were examined in this study. All patients received neoadjuvant chemotherapy followed by radical hysterectomy. Tumor response against NAC was determined based on RECIST criterior. Gene-expression profiles of SCC were determined using Human Genome GeneChip arrays U133.
Project description:This is a study indented to investigate the alterations in the molecular profile of cervix uteri, as it progresses thorough various FIGO stages of carcinoma, by means of global gene expression profiling, in a cohort of Indian patients. In addition expresion profiles of early and advanced stage cervical cancer were compared to identify biomarkers and therapeutic targets for the advanced stages. Cervical cancer and non-malignant cervical tissues are obtained from consenting patients following hospital ethics committee approved protocols. The samples are profiled against universal Human reference RNA from Stratagene on 19K EST microarrays from Microarray Center, University Health Network, Toronto, Canada. Biological replicates: Normal = 4; Cervical cancer Stage I = 8; Cervical cancer Stage II = 9; Cervical cancer Stage III = 8. One replicate per array.
Project description:The patients with locally advanced squamous cervical cancer (SCC) were examined in this study. All patients received neoadjuvant chemotherapy followed by radical hysterectomy. Tumor response against NAC was determined based on RECIST criterior. Gene-expression profiles of SCC were determined using Human Genome GeneChip arrays U133. SCC patients who had undergone radical hysterectomy after NAC were studied. To identify molecular signatures to predict response to NAC using Irinotecan/Nedaplatin, gene expression profiles were compared between NAC Reponder and Non-responder.
Project description:Twenty-one patients with locally advanced squamous cell carcinoma were enrolled in this study. Primary biopsies harvested prior to therapy were divided according to the patient’s 6 months clinical response and analyzed for whole human gene expression (Agilent). A 2859-gene signature was identified to distinguish between responder and non-responder patients. ‘DNA Replication, Recombination and Repair’ represented one of the most important mechanisms activated in non-responsive cervical tumors, and ‘Role of BRCA1 in DNA Damage Response’ was predicted to be the most significantly altered canonical pathway involved in intrinsic resistance. The microarray results were validated by qRT-PCR and immunohistochemistry. An additional set of 24 formalin-fixed paraffin-embedded cervical cancer samples was used for independent validation of the proteins of interest. Immunohistological staining confirmed increased expression of BRCA1, BRIP1, FANCD2 and RAD51 in non-responsive compared with responsive advanced squamous cervical cancer, both in the initial set of 21 cervical cancer samples and the second set of 24 samples.