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
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Mack, Nzinga; Mazzio, Elizabeth A; Bauer, David et al. (2017) Stable shRNA Silencing of Lactate Dehydrogenase A (LDHA) in Human MDA-MB-231 Breast Cancer Cells Fails to Alter Lactic Acid Production, Glycolytic Activity, ATP or Survival. Anticancer Res 37:1205-1212
Doddapaneni, Ravi; Patel, Ketan; Chowdhury, Nusrat et al. (2017) Reversal of drug-resistance by noscapine chemo-sensitization in docetaxel resistant triple negative breast cancer. Sci Rep 7:15824
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Mazzio, Elizabeth A; Bauer, David; Mendonca, Patricia et al. (2017) Natural product HTP screening for attenuation of cytokine-induced neutrophil chemo attractants (CINCs) and NO2- in LPS/IFN? activated glioma cells. J Neuroimmunol 302:10-19
Kutlehria, Shallu; Behl, Gautam; Patel, Ketan et al. (2017) Cholecalciferol-PEG Conjugate Based Nanomicelles of Doxorubicin for Treatment of Triple-Negative Breast Cancer. AAPS PharmSciTech :
Mazzio, Elizabeth A; Soliman, Karam F A (2017) HTP Nutraceutical Screening for Histone Deacetylase Inhibitors and Effects of HDACis on Tumor-suppressing miRNAs by Trichostatin A and Grapeseed (Vitis vinifera) in HeLa cells. Cancer Genomics Proteomics 14:17-33
Mendonca, Patricia; Taka, Equar; Bauer, David et al. (2017) The attenuating effects of 1,2,3,4,6 penta-O-galloyl-?-d-glucose on inflammatory cytokines release from activated BV-2 microglial cells. J Neuroimmunol 305:9-15
Ali, Askal Ayalew; Xiao, Hong; Tawk, Rima et al. (2017) Comparison of health utility weights among elderly patients receiving breast-conserving surgery plus hormonal therapy with or without radiotherapy. Curr Med Res Opin 33:391-400
Mathis, Arlesia L; Rooks, Ronica N; Tawk, Rima H et al. (2017) Neighborhood Influences and BMI in Urban Older Adults. J Appl Gerontol 36:692-708

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