Recent surveys have shown that African-American women develop highly aggressive breast tumors and experience about three-time higher mortality rates in comparison with other populations. Most African-American women have estrogen receptor negative (ER-), progesterone receptor negative (PR-) and human epidermal growth factor receptor-2 negative (HER-2-) tumors. Current Food and Drug Administration (FDA)-approved breast cancer therapies are geared toward the treatment of estrogen positive (ER+) breast tumors, which include Selective Estrogen Receptor Modulators (SERMs) and Aromatase inhibitors. Both SERMs and aromatase inhibitors serve to alleviate the estrogen effect upon the progression of ER+ breast cancers. Nevertheless, there is a lack of treatment for triple negative (ER-, PR- and HER-2- ) breast cancer which overwhelmingly affects African-American women. This proposal's emphasis is directed toward a natural occurring potential chemopreventive and/or chemotherapeutic agent, indole-3-carbinol, which has been found to display both preventive and therapeutic anti-breast cancer activities in various studies, lndole-3-carbinol is a product found in cruciferous vegetables, and it is being marketed in health food stores as a dietary supplement. The key metabolite of lndole-3-carbinol is its acid form which is converted to other intermediates, such as 3, 3'dlindolylmethane (DIM). Our hypothesis is that DIM induces apoptosis by the inhibition of phosphatidylinositol 3-kinase (PI3K)/serine-threonine kinase (Akt,) signaling pathway by antagonism at active site which is involved the stimulation of triple negative breast cancer growth by estradiol. This hypothesis has been substantiated by preliminary molecular modeling studies which indicate that there is similarity between the chemical structures of DIM analogues and estradiol. We will validate our hypothesis by the following specific aims: 1. Synthesis of hydroxlyated, benzofuran and benzothiophene DIM analogues. 2. Anti-proliferation Studies using MDA-MB-231, MDA-MB-435 and MDA-MB-435 estrogen receptor triple negative breast cancer cell lines, and Inhibition of Akt signal pathway using Immunoblot analysis, 3. Computational Studies for optimization of breast cancer growth inhibitory activity.

Public Health Relevance

Our ultimate goal is to develop chemotherapeutic agents for the treatment of estrogen non responsive breast cancer patients because of the tremendous need. We hope to develop dmgs with enhanced efficiency by looking at analogs of a natural product which shows some activity against this particular type of breast cancer.

Agency
National Institute of Health (NIH)
Institute
National Institute on Minority Health and Health Disparities (NIMHD)
Type
Exploratory Grants (P20)
Project #
5P20MD006738-03
Application #
8611737
Study Section
Special Emphasis Panel (ZMD1-RN)
Project Start
Project End
Budget Start
2014-02-01
Budget End
2015-01-31
Support Year
3
Fiscal Year
2014
Total Cost
$145,024
Indirect Cost
$38,281
Name
Florida Agricultural and Mechanical University
Department
Type
DUNS #
623751831
City
Tallahassee
State
FL
Country
United States
Zip Code
32307
Boakye, Cedar H A; Patel, Ketan; Doddapaneni, Ravi et al. (2016) Ultra-flexible nanocarriers for enhanced topical delivery of a highly lipophilic antioxidative molecule for skin cancer chemoprevention. Colloids Surf B Biointerfaces 143:156-67
Tawk, Rima; Dutton, Matthew (2016) Racial Differences in Length of Stay for Patients Who Leave Against Medical Advice from U.S. General Hospitals. Int J Environ Res Public Health 13:
Ramsubhag, Ron R; Massaro, Chelsea L; Dadich, Christina M et al. (2016) Synthesis of ""neoprofen"", a rigidified analogue of ibuprofen, exemplifying synthetic methodology for altering the 3-D topology of pharmaceutical substances. Org Biomol Chem 14:7855-8
Godugu, Chandraiah; Doddapaneni, Ravi; Patel, Apurva R et al. (2016) Novel Gefitinib Formulation with Improved Oral Bioavailability in Treatment of A431 Skin Carcinoma. Pharm Res 33:137-54
Hedrick, Erik; Lee, Syng-Ook; Doddapaneni, Ravi et al. (2016) NR4A1 Antagonists Inhibit β1-Integrin-Dependent Breast Cancer Cell Migration. Mol Cell Biol 36:1383-94
Gangapuram, Madhavi; Jean, Riccardo; Mazzio, Elizabeth et al. (2016) Substituted Tetrahydroisoquinolines as Microtubule-destabilizing Agents in Triple Negative Human Breast Cancer Cells. Anticancer Res 36:5043-5052
Zarmouh, Najla O; Messeha, Samia S; Elshami, Faisel M et al. (2016) Natural Products Screening for the Identification of Selective Monoamine Oxidase-B Inhibitors. European J Med Plants 15:
Patel, Ketan; Doddapaneni, Ravi; Chowdhury, Nusrat et al. (2016) Tumor stromal disrupting agent enhances the anticancer efficacy of docetaxel loaded PEGylated liposomes in lung cancer. Nanomedicine (Lond) 11:1377-92
Andey, Terrick; Patel, Apurva; Marepally, Srujan et al. (2016) Formulation, Pharmacokinetic, and Efficacy Studies of Mannosylated Self-Emulsifying Solid Dispersions of Noscapine. PLoS One 11:e0146804
Mochona, Bereket; Qi, Xin; Euynni, Suresh et al. (2016) Design and evaluation of novel oxadiazole derivatives as potential prostate cancer agents. Bioorg Med Chem Lett 26:2847-51

Showing the most recent 10 out of 81 publications