Abstract:
Metastatic melanomas are highly resistant to radiation and chemotherapy from the earliest stages, which is a major factor in poor clinical outcomes. Activated leukocyte adhesion molecule (ALCAM)/CD166 was the gene that showed the highest correlation with detachment-induced chemoresistance. SiRNA-mediated depletion or antibody blocking of ALCAM specifically inhibited the increase in chemoresistance after detachment. This antibody also improved chemotherapeutic responses in a mouse xenograft model of human melanoma. Previous studies identified ALCAM as a marker for tumor aggressiveness and poor prognosis, and as a marker for “stemness”. Targeting ALCAM may therefore represent a novel approach for treatment of otherwise intractable melanomas. It was also found that stimulating integrin signaling enhanced chemosensitivity of melanoma to chemotherapeutic agents. The present invention provides a novel multimeric peptide construct comprising fibronectin fragments useful for stimulating integrin signaling and for enhancing chemosensitivity of melanomas.
Abstract:
Novel sulfoximine and sulfodiimine matrix metalloproteinase inhibitors of the formula, ##STR1## wherein: R.sup.1 is selected from the group consisting of lower-alkyl, hydroxy lower-alkyl, amino lower-alkyl, carbamoyl lower-alkyl, lower-alkyl carbonyl, lower-alkyoxyalkyl, aralkyl and heteroaralkyl;X is NH or O;R.sup.2 is selected from the group consisting of hydrogen, lower-alkyl and aralkyl;R.sup.3 is selected from the group consisting of hydrogen, lower-alkyl, amino lower-alkyl, guanyl lower-alkyl, aralkyl and heteroaralkyl; andR.sup.4 is selected from the group consisting of lower alkyl, aralkyl and --CH(R.sup.5)--C(O)NH.sub.2,wherein R.sup.5 is selected from the group consisting of hydrogen, lower-alkyl, amino lower-alkyl, guanyl lower-alkyl, imidazoylalkyl, hydroxymethyl, 1-hydroxyethyl, mercapto lower-alkyl, and methylthio lower-alkyl;useful for modulating physiological functions or treating diseases and disease conditions associated with matrix metalloproteinase modulation.
Abstract:
The present invention provides a method of regulating vascular permeability. A peptide inhibitor of p21-activated kinase has been found to inhibit the increase in vascular permeability induced by several factors. The present invention further provides methods of identifying regulators of vascular permeability. This peptide or other p21-activated kinase inhibitors should therefore be useful to treat disorders where vascular leak is a contributing factor.
Abstract:
An alkali-cleavable heterobifunctional cross-linking analytical reagent is provided in the form of a compound having the structure ##STR1## in which R.sub.1 and R.sub.2 is each an alkylene group having from 2 to 4 carbon atoms.
Abstract:
The invention provides methods of inhibiting the growth or metastasis of a cancer in a mammal by inhibiting a Ral GTPase in the mammal. The invention also provides small molecule inhibitors of Ral GTPases useful in the methods of the invention and pharmaceutical compositions containing the therapeutically effective compounds of the invention, and methods of using the same.
Abstract:
An analog-to-digital voice storage cellular telephone for recording voice messages while the user is away from the cellular telephone unit. In a preferred embodiment, the analog-to-digital voice storage cellular telephone comprises call answering circuitry which is activated after a predetermined number of rings. Detection circuitry waits to detect a SAT signal during a preset period of time. Once the SAT signal is detected a prerecorded outgoing message is transmitted to the caller. The voice storage cellular telephone records incoming voice messages. which are retrieved and replayed by users at their convenience. If the SAT signal is not detected, call terminating circuitry immediately terminates call. In accordance with one aspect, voice messages may be recorded at the central cellular station in real time, subsequently transmitted to the voice storage cellular telephone at a high speed and reproduced at normal speed to reduce air transmission time and cost.
Abstract:
The present invention relates to methods and compositions for regulating vascular permeability. The present invention relates to methods and compositions for blocking proteins and signal transduction pathways involved in increasing vascular permeability.
Abstract:
The present invention relates to methods and compositions for regulating vascular permeability. The present invention relates to methods and compositions for blocking proteins and signal transduction pathways involved in increasing vascular permeability.
Abstract:
The present invention provides compositions and methods for regulating leukocyte migration and function. The present invention also provides compositions and methods for preventing and inhibiting lung injury and damage associated with neutrophil infiltration of the lung.
Abstract:
The present invention provides a method for inhibiting cell proliferation in a cell comprising contacting the cell with a nucleic acid sequence or a polypeptide having essentially the sequence of the .beta..sub.1C integrin. Also included in the invention are peptides consisting of amino acid residues which are the size of or fewer than the sequence of the cytoplasmic domain of the .beta..sub.1C integrin consisting essentially of the amino acid sequence of SEQ ID NO:1 and SEQ ID NO:2, and functional fragments thereof which are useful for inhibiting cellular proliferation. Peptides, polynucleotides, and antibodies immunoreactive with the peptides, and methods of use for inhibiting cell growth are also provided.
Abstract translation:本发明提供了抑制细胞中细胞增殖的方法,包括使细胞与基本上具有β1C整联蛋白序列的核酸序列或多肽接触。 本发明还包括由基本上由SEQ ID NO:1和SEQ ID NO:2的氨基酸序列组成的β1C整联蛋白的大小或小于其序列的氨基酸残基的肽 及其功能片段,其可用于抑制细胞增殖。 还提供了肽,多核苷酸和与肽免疫反应的抗体,以及用于抑制细胞生长的方法。