Engel JB, Keller G, Schally AV, Nagy A, Chism DD, Halmos G. Effective treatment of experimental human endometrial cancers with targeted cytotoxic luteinizing hormone–releasing hormone analogues AN-152 and AN-207.
Fertil Steril 2005;
83 Suppl 1:1125-33. [PMID:
15831285 DOI:
10.1016/j.fertnstert.2004.10.042]
[Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2004] [Revised: 10/26/2004] [Accepted: 10/26/2004] [Indexed: 11/28/2022]
Abstract
OBJECTIVE
To treat experimental human endometrial cancers based on targeted chemotherapy with the cytotoxic luteinizing hormone-releasing hormone (LHRH) analogues AN-152 and AN-207.
DESIGN
Experimental study using athymic nude mice bearing xenografts of HEC-1A and RL-95-2 human endometrial cancers to assess the efficacy and toxicity of AN-152 and AN-207. The expression of LHRH receptors in HEC-1A and RL-95-2 cancers was determined by reverse transcription-polymerase chain reaction, Western blot analysis, and radioligand binding assays.
SETTING
Experimental laboratory research.
ANIMAL(S)
Female athymic nude mice (Ncr, nu/nu).
INTERVENTION(S)
Animals were treated with IV injections of the cytotoxic LHRH analogues AN-152 and AN-207 and their respective cytotoxic radicals doxorubicin (DOX) and AN-201 (2-pyrrolinodoxorubicin) on a control vehicle solution.
MAIN OUTCOME MEASURE(S)
Tumor volume, final tumor weight, tumor doubling time, body weight, white blood cell count, and LHRH receptor expression.
RESULT(S)
AN-152 significantly inhibited the growth of HEC-1A tumors. AN-207 also significantly suppressed the proliferation in vivo of HEC-1A and RL-95-2 cancers. The cytotoxic radicals DOX and AN-201 had no effect. Furthermore, mRNA for LHRH receptors, LHRH receptor protein, and high-affinity binding sites for LHRH were demonstrated on tumors.
CONCLUSION(S)
Targeted chemotherapy with AN-152 and AN-207 strongly inhibits the growth of human endometrial cancers, which express LHRH receptors, and could provide a new treatment modality for women with advanced endometrial carcinoma.
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