摘要:
A transgenic rodent that constitutively expresses a ras protein in at least one tissue, is p21 null in at least one chromosome, and exhibits enhanced and accelerated ras-dependent tumorigenesis, together with methods for using said rodent, or cells derived thereof, for screening compounds or treatments for antitumor activity. In preferred embodiments, the rodent is a transgenic mouse that expresses a human ras oncogene operably linked to human regulatory sequences, and the cells of the mouse have at least one copy of a p21WAF1/ClP1transgene, whereby the mouse constitutively expresses a ras oncogene, and has decreased expression of p21. The rodents of the invention are useful in the study of ras-dependent oncogenesis and in the developments of treatments thereto.
摘要:
Compounds having the formula or a pharmaceutically acceptable salt thereof wherein R1 is (a) hydrogen, (b) loweralkyl, (c) alkenyl, (d) alkoxy, (e) thioalkoxy, (f) halo, (g) haloalkyl, (h) aryl-L2—, and (i) heterocyclic-L2—; R2 is selected from (a) (b) —C(O)NH—CH(R14)—C(O)OR15, (d) —C(O)NH—CH(R14)—C(O)NHSO2R16, (e) —C(O)NH—CH(R14)-tetrazolyl, (f) —C(O)NH-heterocyclic, and (g) —C(O)NH—CH(R14)—C(O)NR17R18; R3 is substituted or unsubstituted heterocyclic or aryl, substituted or unsubstituted cycloalkyl or cycloalkenyl, and —P(W)RR3RR3′; R4 is hydrogen, lower alkyl, haloalkyl, halogen, aryl, arylakyl, heterocyclic, or (heterocyclic)alkyl; L1 is absent or is selected from (a) —L4—N(R5)—L5—, (b) —L4—O—L5—, (c) —L4—S(O)n—L5— (d) —L4—L6—C(W)—N(R5)—L5—, (e) —L4—L6—S(O)m—N(R5)—L5 —, (f) —L4—N(R5)—C(W)—L7—L5—, (g) —L4—N(R5)—S(O)p—L7—L5—, (h) optionally substituted alkylene, (i) optionally substituted alkenylene, (j) optionally substituted alkynylene (k) a covalent bond, (l) and (m) are inhibitors of protein isoprenyl transferases. Also disclosed are protein isoprenyl transferase inhibiting compositions and a method of inhibiting protein isoprenyl transferases.
摘要翻译:具有式的化合物或其药学上可接受的盐,其中R 1是(a)氢,(b)低级烷基,(c)烯基,(d)烷氧基,(e)硫代烷氧基,(f)卤素,(g)卤代烷基,(h) 芳基-L2-和(i)杂环-L2-; R 2选自(a)(b)-C(O)NH-CH(R 14)-C(O)OR 15,(d)-C(O)NH-CH(R 14)-C(O)NHSO 2 R 16 e)-C(O)NH-CH(R14) - 四唑基,(f)-C(O)NH-杂环基和(g)-C(O)NH-CH(R14)-C(O)NR17R18; R 3是取代或未取代的杂环或芳基,取代或未取代的环烷基或环烯基,和-P(W)RR 3 R R 3'; R4是氢,低级烷基,卤代烷基,卤素,芳基,芳基烷基,杂环或(杂环)烷基; (a)-L4-N(R5)-L5-,(b)-L4-O-L5-,(c)-L4-S(O)n-L5-(d) - L4-L6-C(W)-N(R5)-L5-,(e)-L4-L6-S(O)mN(R5)-L5 - ,(f)-L4-N(R5)-C W)-L7-L5-,(g)-L4-N(R5)-S(O)p-L7-L5-,(h)任选取代的亚烷基,(i)任选取代的亚烯基,(j)任选取代的亚炔基 (k)共价键,(1)和(m)是蛋白质异戊二烯基转移酶的抑制剂。 还公开了蛋白质异戊二烯转移酶抑制组合物和抑制蛋白质异戊二烯转移酶的方法。
摘要:
Peptidomimetics of the formula C.beta.X where C is cysteine, X is any naturally occuring amino acid, and .beta. is a hydrophobic spacer, most notably 2-phenyl-4-aminobenzoic acid. These compounds are effective inhibitors of p2lras farnesyltrasferase, block Ras-dependent oncogenic signalling and inhibit human tumor growth in vivo in animal models. Pro-drugs made by functionalizing terminal amino and carboxylic acid groups of peptides and peptidomimetics are also disclosed. Such functionalized derivatives demonstrate increased cell uptake. Other structural modifications are also disclosed.
摘要:
Methods of inducing tumor regression, inhibiting tumor growth, and inducing apoptosis with selective peptidomimetic inhibitors of geranylgeranyltransferase I (GGTase I), are provided. In one aspect, GGTI-2418 and its methylester GGTI-2417, increase levels of the cyclin-dependent kinase (Cdk) inhibitor p27Kip1 and induce breast tumor regression in vivo. In another aspect, GGTI-2417 inhibits the Cdk2-mediated phosphorylation of p27Kip1 at Thr187 and accumulates p27Kip1 in the nucleus.
摘要:
The subject invention concerns materials and methods for treating diseases and disorders associated with expression of Rho associated kinases (ROCKs). Examples of diseases and disorders contemplated within the scope of the invention include, but are not limited to, oncological disorders, cardiovascular diseases, CNS disorders, and inflammatory disorders. In one embodiment, a method of the invention comprises administering a therapeutically effective amount of one or more compounds of the present invention, or a composition comprising the compounds, to a person or animal in need of treatment. The subject invention also concerns compounds that inhibit ROCKs, and compositions that comprise the inhibitor compounds of the invention. Compounds contemplated within the scope of the invention include, but are not limited to, those compounds shown in Table 5.
摘要:
Described herein are inhibitors of Aurora kinase and their use in the treatment of cancer. Methods of screening for selective inhibitors of Aurora kinases are also disclosed.
摘要:
The subject invention pertains to the treatment of tumors and cancerous tissues and the prevention of tumorigenesis and malignant transformation through the modulation of JAK/STAT3 intracellular signaling. The subject invention concerns pharmaceutical compositions containing cucurbitacin I, or a pharmaceutically acceptable salt or analog thereof. Another aspect of the invention concerns methods of inhibiting the growth of a tumor by administering a cucurbitacin I, or a pharmaceutically acceptable salt or analog thereof, to a patient, wherein the tumor is characterized by the constitutive activation of the JAK/STAT3 intracellular signaling pathway. The present invention further pertains to methods of moderating the JAK and/or STAT3 signaling pathways in vitro or in vivo using cucurbitacin I, or a pharmaceutically acceptable salt or analog thereof. Another aspect of the present invention concerns a method for screening candidate compounds for JAK and/or STAT3 inhibition and anti-tumor activity.
摘要:
Described herein are inhibitors of Aurora kinase and their use in the treatment of cancer. Methods of screening for selective inhibitors of Aurora kinases are also disclosed.
摘要:
Disclosed herein is the use of HLM-008182, as well as its analogues formed via in-house synthesis, as a potent proteasome inhibitors. A new method was developed for HLM-008182 through a four-step protocol and the method was further optimized to a two step protocol. The synthesis in both protocols was regioselective with TiCl4. The reaction was highly efficient with microwave assisted heating and THF as solvent. The modification around the molecule HLM-008182 established primary SAR, indicating that the proteasome inhibition activity was a function of the 2-side chain.