Abstract: The present invention pertains to a novel method for quantifying VEGF various isoforms in a biological sample, with a very high selectivity and sensitivity. It also concerns a method for establishing a diagnostic and/or a prognosis concerning a patient potentially suffering from cancer, diabetes, or cardiovascular disease, comprising a step of determining the level of at least one of the VEGF isoforms, in a biological sample from said patient.

Abstract: The present invention relates to polypeptides that inhibit the NF-&kgr; B signaling pathway and polynucleotides encoding the same. The present invention further provides methods for the modulation of and/or treatment of inflammatory responses, oncogenesis, viral infection; the regulation of cell proliferation and apoptosis; and regulation of B or T lymphocytes in antigenic stimulation, by administering the polypeptides of the present invention to a subject in need thereof. Finally, the present invention provides a method of identifying polypeptides that modulate oligomerization of NEMO.