Breast cancer is the most common type of cancer in women worldwide. Elevated expression of the basic fibroblast growth factor (bFGF) has been found in patients suffering from breast cancer. We previously obtained a high-affinity bFGF-binding peptide (named P7) from a phage-display random heptapeptide library. In this study, we show that P7 peptides significantly inhibits the proliferation of the...

We report the use of "mRNA display," an in vitro selection technique, to identify peptide aptamers to a protein target. mRNA display allows for the preparation of polypeptide libraries with far greater complexity than is possible with phage display. Starting with a library of approximately 10(13) random peptides, 20 different aptamers to streptavidin were obtained, with dissociation constants a...

The aim of this study was to screen for polypeptides binding specifically to LoVo human colorectal cancer cells using a phage-displayed peptide library as a targeting vector for colorectal cancer therapy. Human normal colorectal mucous epithelial cells were applied as absorber cells for subtraction biopanning with a c7c phage display peptide library. Positive phage clones were identified by enz...

OBJECTIVE Vascular endothelial growth factor (VEGF) interaction with its receptor, VEGFR-3/Flt-4, regulates lymphangiogenesis. VEGFR-3/Flt-4 expression in cancer cells has been correlated with clinical stage, lymph node metastasis, and lymphatic invasion. The objective of this study is to identify a VEGFR-3/Flt-4-interacting peptide that could be used to inhibit VEGFR-3 for ovarian cancer thera...

Antigenic sites in the cucumber mosaic virus (CMV) coat protein (CP) have been identified using a polyclonal antiserum prepared against glutaraldehyde-fixed virions. Antibodies were used to screen a random peptide library of heptamers displayed on the surface of a bacteriophage. Eight of 36 (22%) sequenced phage clones had inserts resembling a putative virion surface domain of the CMV CP. This ...

Yoichi KUMADA, Masao NOGAMI, Fida HASAN, Masaaki TERASHIMA and Shigeo KATOH Department of Bioscience and Biotechnology, Okayama University, 1-1, Tsushimanaka 3, Okayam-shi, Okayama 700-8530, Japan Graduate School of Science and Technology, Kobe University, 1-1, Rokkodaicho, Kobe-shi, Hyogo 657-8502, Japan Graduate school of Human Sciences, Kobe College, 4-1, Okadayama, Nishinomiya-shi, Hyogo 66...

Nasopharyngeal carcinoma (NPC) is a common cancer among Chinese living in southern China, Taiwan, and Singapore. The 5-year survival rate in the early stage of NPC has been reported as high as 90 to 95% with the use of radiotherapy, but in the advanced cases, even with the use of both chemotherapy and radiotherapy, the survival rate is still <50%. To improve the survival rate, we identify a 12-...