interleukin-8 and Genital-Neoplasms--Female

The purpose of this study is to develop a high-throughput approach to detect protein expression from hundreds and thousands of samples and to apply this technology to profile circulating angiogenic factor protein levels in patients with gynecological tumors.. Analytes containing a mixture of protein are immobilized onto antibody-coated surface of support in array format. The presence of protein in analytes is detected with biotin-labeled antibody coupled with an enhanced chemiluminescence or fluorescence detection system. The exact amount of protein can be quantitatively measured. The expression levels of five angiogenic factors (angiogenin, interleukin 8, vascular endothelial growth factor, platelet-derived growth factor, and epidermal growth factor) from 157 samples were quantitatively measured using this novel protein array technology and were statistically analyzed. The expression patterns of angiogenic factors were analyzed using two-way hierarchical cluster analysis approach.. A novel protein array technology, which can simultaneously and quantitatively measure few protein levels from hundreds and thousands of samples was developed. Only minute amounts of sample are required for the assay. This approach also features high sensitivity and specificity. Using this novel protein array approach, we analyzed the plasma expression levels of five angiogenic factors in 137 patients diagnosed with a tumor and 20 controls. Statistical analysis reveals different expression levels of angiogenic factors between patients and controls. Cluster analysis suggests a possible classification of normal subjects from patients.. Enhanced protein profiling arrays provide a high-throughput and sensitive system to detect one or few protein from hundreds and thousands of samples. Such an approach should have broad application in biomedical discovery.

Topics: Adolescent; Adult; Aged; Aged, 80 and over; Biotin; Cell Line, Tumor; Cluster Analysis; Enzyme-Linked Immunosorbent Assay; Epidermal Growth Factor; Female; Genital Neoplasms, Female; Humans; Immunoglobulin G; Interleukin-8; Luminescent Measurements; Microscopy, Fluorescence; Middle Aged; Multigene Family; Neoplasms; Neovascularization, Pathologic; Oligonucleotide Array Sequence Analysis; Platelet-Derived Growth Factor; Protein Array Analysis; Ribonuclease, Pancreatic; Sensitivity and Specificity; Tissue Distribution; Vascular Endothelial Growth Factor A

Chemokines effect their proinflammatory and growth regulatory roles through interaction with serpentine receptors. One such receptor, CXCR2, binds multiple CXC chemokines, including interleukin 8, GRO-alpha, GRO-beta, GRO-gamma, and NAP-2. We have previously identified CXCR2 expression on myeloid cells, notably mature granulocytes, and projection neurons.. To determine the expression of CXCR2 by cells of the neuroendocrine system.. Archival specimens from normal neuroendocrine tissues and their malignant counterparts were analyzed by immunohistochemistry with monoclonal antibodies specific for CXCR1 and CXCR2.. Immunohistochemical analysis revealed high-level expression of CXCR2 by cells in the pituitary, adrenal medulla, pancreatic islets, thyroid C cells, scattered Kulchitsky cells in the bronchi, and counterpart neuroendocrine cells in the stomach, small bowel, colon, and appendix. Neuroendocrine neoplasms that demonstrated high-level CXCR2 expression included (1) primary carcinoids localized to the stomach, small bowel, colon, appendix, fallopian tube, ovary, and lung; (2) atypical carcinoids of the lung; (3) metastatic carcinoids; (4) pituitary adenomas; (5) pheochromocytomas; and (6) medullary carcinomas of the thyroid. Small cell lung carcinomas, large cell neuroendocrine carcinomas of the lung, small cell carcinoma of the cervix, Merkel cell carcinomas, neuroblastomas, and malignant melanomas lacked evidence of CXCR2 expression.. The expression of CXCR2 by normal neuroendocrine cells and neoplastic counterparts that have retained phenotypic features of this differentiation program suggests that chemokines may play an important role in functions that are characteristic of this cell type. In addition, this raises the possibility that chemokines may modulate secretion of biologically active products of these cells and their neoplastic counterparts.

Topics: Antibodies, Monoclonal; Antigens, CD; Female; Gastrointestinal Neoplasms; Genital Neoplasms, Female; Humans; Immunohistochemistry; Interleukin-8; Neoplasms; Neuroendocrine Tumors; Neurosecretory Systems; Organ Specificity; Receptors, Chemokine; Receptors, Interleukin; Receptors, Interleukin-8A; Receptors, Interleukin-8B; Reference Values

Topics: Female; Genital Diseases, Female; Genital Neoplasms, Female; Humans; Interleukin-8; Reference Values