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Wu B, Tapadar S, Ruan Z, Sun CQ, Arnold RS, Olugbami JO, Johnston A, Arunsi U, Gaul DA, Petros JA, Kobayashi T, Duda DG, Oyelere AK. A Novel Liver Cancer-Selective Histone Deacetylase Inhibitor Is Effective Against Hepatocellular Carcinoma and Induces Durable Responses with Immunotherapy. bioRxiv 2024:2024.03.27.587062. [PMID: 38585757 PMCID: PMC10996603 DOI: 10.1101/2024.03.27.587062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Hepatocellular cancer (HCC) progression is facilitated by gene-silencing chromatin histone hypoacetylation due to histone deacetylases (HDACs) activation. However, inhibiting HDACs - an effective treatment for lymphomas - has shown limited success in solid tumors. We report the discovery of a class of HDAC inhibitors (HDACi) that demonstrates exquisite selective cytotoxicity against human HCC cells. The lead compound STR-V-53 ( 3 ) showed favorable safety profile in mice and robustly suppressed tumor growth in orthotopic xenograft models of HCC. When combined with the anti-HCC drug sorafenib, STR-V-53 showed greater in vivo efficacy. Moreover, STR-V-53 combined with anti-PD1 therapy increased the CD8 + to regulatory T-cell (Treg) ratio and survival in an orthotopic HCC model in immunocompetent mice. This combination therapy resulted in durable responses in 40% of the mice. Collectively, our data demonstrate that the novel HDACi STR-V-53 is an effective anti-HCC agent that can induce profound responses when combined with standard immunotherapy.
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Bashiru M, Macchi S, Forson M, Khan A, Ishtiaq A, Oyebade A, Jalihal A, Ali N, Griffin RJ, Oyelere AK, Hooshmand N, Siraj N. Doxorubicin-Based Ionic Nanomedicines for Combined Chemo-Phototherapy of Cancer. ACS Appl Nano Mater 2024; 7:2176-2189. [PMID: 38410412 PMCID: PMC10896075 DOI: 10.1021/acsanm.3c05464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Synergistic combination therapy approach offers lots of options for delivery of materials with anticancer properties, which is a very promising strategy to treat a variety of malignant lesions with enhanced therapeutic efficacy. The current study involves a detailed investigation of combination ionic nanomedicines where a chemotherapeutic drug is coupled with a photothermal agent to attain dual mechanisms (chemotherapy (chemo) and photothermal therapy (PTT)) to improve the drug's efficacy. An FDA-approved Doxorubicin hydrochloride (DOX·HCl) is electrostatically attached with a near-infrared cyanine dye (ICG, IR783, and IR820), which serves as a PTT drug using ionic liquid chemistry to develop three ionic material (IM)-based chemo-PTT drugs. Carrier-free ionic nanomedicines (INMs) are derived from ionic materials (IMs). The photophysical properties of the developed combination IMs and their INMs were studied in depth. The phototherapeutic efficiency of the combination drugs was evaluated by measuring the photothermal conversion efficiency and singlet-oxygen quantum yield. The improved photophysical properties of the combination nanomedicines in comparison to their parent compounds significantly enhanced INMs' photothermal efficiency. Cellular uptake, dark and light toxicity studies, and cell death mechanisms of the chemo-PTT nanoparticles were also studied in vitro. The combination INMs exhibited enhanced cytotoxicity compared to their respective parent compounds. Moreover, the apoptosis cell death mechanism was almost doubled for combination nanomedicine than the free DOX, which is attributed to enhanced cellular uptake. Examination of the combination index and improved in vitro cytotoxicity results revealed a great synergy between chemo and PTT drugs in the developed combination nanomedicines.
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Affiliation(s)
- Mujeebat Bashiru
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
| | - Samantha Macchi
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
| | - Mavis Forson
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
| | - Amna Khan
- Department of Chemistry, University of Arkansas at Fayetteville, Fayetteville, Arkansas 72701, United States
| | - Arisha Ishtiaq
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
| | - Adeniyi Oyebade
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
| | - Amanda Jalihal
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
| | - Nawab Ali
- Department of Biology, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
| | - Robert J Griffin
- Department of Radiation Oncology, Arkansas Nanomedicine Center, Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, United States
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Nasrin Hooshmand
- Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Noureen Siraj
- Department of Chemistry, University of Arkansas at Little Rock, Little Rock, Arkansas 72204, United States
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Caggia S, Johnston A, Walunj DT, Moore AR, Peer BH, Everett RW, Oyelere AK, Khan SA. Gα i2 Protein Inhibition Blocks Chemotherapy- and Anti-Androgen-Induced Prostate Cancer Cell Migration. Cancers (Basel) 2024; 16:296. [PMID: 38254786 PMCID: PMC10813862 DOI: 10.3390/cancers16020296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/22/2023] [Accepted: 01/02/2024] [Indexed: 01/24/2024] Open
Abstract
We have previously shown that heterotrimeric G-protein subunit alphai2 (Gαi2) is essential for cell migration and invasion in prostate, ovarian and breast cancer cells, and novel small molecule inhibitors targeting Gαi2 block its effects on migratory and invasive behavior. In this study, we have identified potent, metabolically stable, second generation Gαi2 inhibitors which inhibit cell migration in prostate cancer cells. Recent studies have shown that chemotherapy can induce the cancer cells to migrate to distant sites to form metastases. In the present study, we determined the effects of taxanes (docetaxel), anti-androgens (enzalutamide and bicalutamide) and histone deacetylase (HDAC) inhibitors (SAHA and SBI-I-19) on cell migration in prostate cancer cells. All treatments induced cell migration, and simultaneous treatments with new Gαi2 inhibitors blocked their effects on cell migration. We concluded that a combination treatment of Gαi2 inhibitors and chemotherapy could blunt the capability of cancer cells to migrate and form metastases.
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Affiliation(s)
- Silvia Caggia
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr., Atlanta, GA 30314, USA; (S.C.); (A.R.M.); (R.W.E.)
| | - Alexis Johnston
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30318, USA; (A.J.); (D.T.W.); (B.H.P.)
| | - Dipak T. Walunj
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30318, USA; (A.J.); (D.T.W.); (B.H.P.)
| | - Aanya R. Moore
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr., Atlanta, GA 30314, USA; (S.C.); (A.R.M.); (R.W.E.)
| | - Benjamin H. Peer
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30318, USA; (A.J.); (D.T.W.); (B.H.P.)
| | - Ravyn W. Everett
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr., Atlanta, GA 30314, USA; (S.C.); (A.R.M.); (R.W.E.)
| | - Adegboyega K. Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30318, USA; (A.J.); (D.T.W.); (B.H.P.)
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - Shafiq A. Khan
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, 223 James P. Brawley Dr., Atlanta, GA 30314, USA; (S.C.); (A.R.M.); (R.W.E.)
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Forson M, Bashiru M, Macchi S, Singh S, Anderson AD, Sayyed S, Ishtiaq A, Griffin R, Ali N, Oyelere AK, Berry B, Siraj N. Cationic Porphyrin-Based Ionic Nanomedicines for Improved Photodynamic Therapy. ACS Appl Bio Mater 2023; 6:5662-5675. [PMID: 38063308 PMCID: PMC10777306 DOI: 10.1021/acsabm.3c00809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
This study presents the synthesis and characterization of monosubstituted cationic porphyrin as a photodynamic therapeutic agent. Cationic porphyrin was converted into ionic materials by using a single-step ion exchange reaction. The small iodide counteranion was replaced with bulky BETI and IR783 anions to reduce aggregation and enhance the photodynamic effect of porphyrin. Carrier-free ionic nanomedicines were then prepared by using the reprecipitation method. The photophysical characterization of parent porphyrin, ionic materials, and ionic nanomaterials, including absorbance, fluorescence and phosphorescence emission, quantum yield, radiative and nonradiative rate, and lifetimes, was performed. The results revealed that the counteranion significantly affects the photophysical properties of porphyrin. The ionic nanomaterials exhibited an increase in the reactive oxygen yield and enhanced cytotoxicity toward the MCF-7 cancer cell line. Examination of results revealed that the ionic materials exhibited an enhanced photodynamic therapeutic activity with a low IC50 value (nanomolar) in cancerous cells. These nanomedicines were mainly localized in the mitochondria. The improved light cytotoxicity is attributed to the enhanced photophysical properties and positive surface charge of the ionic nanomedicines that facilitate efficient cellular uptake. These results demonstrate that ionic material-based nanodrugs are promising photosensitizers for photodynamic therapy.
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Affiliation(s)
- Mavis Forson
- Department of Chemistry, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
| | - Mujeebat Bashiru
- Department of Chemistry, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
| | - Samantha Macchi
- Department of Chemistry, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
| | - Sarbjot Singh
- Department of Chemistry, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
| | - Ashley Danyelle Anderson
- Arkansas State Crime Laboratory, 3 Natural Resources Dr, Little Rock, Arkansas 72205, United States
| | - Shehzad Sayyed
- Department of Biology, University of Arkansas, 1 University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Arisha Ishtiaq
- Department of Chemistry, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
| | - Robert Griffin
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, Winthrop P. Rockefeller Cancer Institute, Arkansas Nanomedicine Center, 4301 W Markham St, Little Rock, Arkansas 72205, United States
| | - Nawab Ali
- Department of Biology, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Brian Berry
- Department of Chemistry, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
| | - Noureen Siraj
- Department of Chemistry, University of Arkansas at Little Rock, 2801 S. University Ave, Little Rock, Arkansas 72204, United States
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Owumi SE, Akinwunmi AO, Nwozo SO, Arunsi UO, Oyelere AK. Aflatoxin B1-induced dysfunction in male rats' reproductive indices were abated by Sorghum bicolor (L.Moench) hydrophobic fraction. Reprod Toxicol 2023; 120:108425. [PMID: 37355213 DOI: 10.1016/j.reprotox.2023.108425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 06/26/2023]
Abstract
The burden of infertility distresses millions of families worldwide. The harmful effects of aflatoxin B1 (AFB1) on the reproductive system involve oxidative stress, culminating in inflammation and cellular apoptosis. The phytochemical in Sorghum bicolor is rich in antioxidants and anti-inflammatory activities. The effect of Sorghum bicolor (L.) Moench (SBE-HP) extract -hydrophobic fraction- enriched in Apigenin (API) was investigated in rats chronically dosed with AFB1 and the likely mechanism (s) of SBE-HP to protect against AFB1-induced reproductive toxicity. Adult Wistar male rats (twenty-four) were selected randomly and allocated into four groups. Cohort 1 was administered 0.05 % carboxymethyl cellulose (CMC); cohort 2 received AFB1 (50 µg/kg) alone; while cohorts 3 and 4 received 5 & 10 mg/kg of (SBE-HP) respectively, along with 50 µg/kg of AFB1. After 28 days, AFB1 induced remarkable reproductive toxicity as evidenced by increased sperm abnormalities, lowered sperm quality and motility, altered serum hormonal levels and testicular enzyme activities, decreased anti-oxidants, increased pro-oxidants, apoptotic and inflammatory biomarkers, as well as altered histoarchitectural structure of the testis, epididymis, and hypothalamus of rats. API-enriched extract of S. bicolor reduced AFB1-induced oxidative, inflammatory, apoptotic, and histological derangement by improving sperm function parameters, testicular enzymes, and reproductive hormones. Anti-oxidant levels and anti-inflammatory mediators were increased while decreases in the activities and levels of pro-oxidants, pro-inflammatory molecules and caspase-9 occurred in the rats' testes, epididymis, and hypothalamus. API-enriched S. bicolor protected the testes, epididymis, and hypothalamus of male rats exposed to AFB1 by modulating oxidative stress, inflammation, and apoptosis.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria.
| | | | - Sarah O Nwozo
- Nutrition and Industrial Biochemistry Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Uche O Arunsi
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta 30332-0400, GA, United States
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta 30332-0400, GA, United States
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Johnston A, Oyelere AK. Abstract 3092: Optimization of deferiprone for the treatment of triple-negative breast cancer. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-3092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Triple-negative breast cancer (TNBC) is the leading cause of new cancer cases and the second leading cause of cancer deaths in American women. TNBC is one of the most difficult cancers to treat due to the lack of three receptors, estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor (HER2), found in regular forms of breast cancer (BCa). Currently, there is no targeted therapy for TNBC and treatment options to manage this lethal disease include surgery, adjuvant chemotherapy and radiotherapy. A better understanding of TNBC etiology has aided in unraveling the roles of two additional cellular targets - androgen receptor (AR) and histone lysine demethylase (KDM) - in the viability and survival of TNBC. Interestingly, AR overexpression is the most important driver of prostate cancer (PCa). A class of current medications used to treat PCa act as androgen receptor (AR) antagonists (or antiandrogens). It is therefore plausible to repurpose and optimize these antiandrogens for TNBC therapy. The proposed therapeutics are dual-acting antiandrogen-KDM inhibitors. The antiandrogen moiety of these agents will enable TNBC cell-targeting and translocation of the drug into the nucleus where inhibition of KDM will prevent transcription of KDMs that promote tumor. The three pharmacophores of these agents are (i) a surface recognition cap, (ii) a linker, and (iii) an Fe2+-binding group. Two classes of these compounds, alkyl-derivative and benzyl-derivative, vary in the design of the surface recognition cap. To optimize these agents, the linker length is varied from 2-7 methylene groups in each class and the optimal length will be determined through in vitro studies. The compounds are tested on five cancer cell lines: TNBC cell lines (MDA-MB-231, low AR+; and MDA-MB-453, high AR+), and ER+ BCa (MCF-7) while PCa cell lines (LNCaP PCa, AR+; and DU 145, PCa, AR-) serve as controls for AR dependency of the effects of test compounds. Longer linker length compounds exhibited low micromolar cytotoxicity and selectivity for MDA-MB-231 (TNBC) and LNCaP (PCa) cell lines due to the presence of the AR. Western blot analysis on lead compounds supported significant downregulation of AR in MDA-MB-231 cells confirming the predicted mechanism of action. Thus far, the designed dual-acting therapeutics have potential to revolutionize the design of anticancer drugs and improve treatment outcome for TNBC patients.
Citation Format: Alexis Johnston, Adegboyega K. Oyelere. Optimization of deferiprone for the treatment of triple-negative breast cancer [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 3092.
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Owumi SE, Arunsi UO, Oyelere AK. The protective effect of 3-indolepropanoic acid on aflatoxin B1-induced systemic perturbation of the liver and kidney function in rats. Fundam Clin Pharmacol 2023; 37:369-384. [PMID: 36214208 DOI: 10.1111/fcp.12842] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 08/07/2022] [Accepted: 10/07/2022] [Indexed: 02/25/2023]
Abstract
Aflatoxin B1 (AFB1) is known to derange the hepatorenal system by redox, DNA adduct formation and apoptotic networks. Endogenous 3-indole propionic acid (3-IPA) is a metabolite of tryptophan metabolism by gut microbiota that can protect against redox imbalance, inflammation and cellular lipid damage. We investigated the beneficial effect of 3-IPA against AFB1-mediated organ toxicity in male rats post 28 days of consecutive treatment. The 3-IPA (25 and 50 mg/kg) was orally administered alongside AFB1 (50 μg/kg) treatment. Biochemical and enzyme-linked immunosorbent assays were utilised to examine biomarkers of hepatorenal function, oxidative status and inflammation. DNA damage and apoptosis were also assessed, and histological staining techniques were used to investigate hepatorenal tissues for pathological indicators. The 3-IPA supplementation abated AFB1-mediated increases in biomarkers of hepatic and renal dysfunction in rat serum. Co-administration of 3-IPA further reduced AFB1-induced redox imbalance (by upregulating antioxidant mediators and enzymes [GSH, TSH, Trx, Trx-R, SOD, CAT, GPx and GST]; reducing reactive oxygen species, lipid peroxidation and DNA adduct [RONS, LPO and 8-OH-dG] formation; suppressing pro-inflammatory and apoptotic mediators [XO, MPO, NO, IL-1β and Casp -9 and -3]; and upregulating the level of interleukin 10 (IL-10). Moreover, treatment with 3-IPA lessened hepatorenal tissue injuries. These findings suggest that augmenting 3-IPA endogenously from tryptophan metabolism may provide a novel strategy to forestall xenobiotics-mediated hepatorenal toxicity, including AFB1.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Uche O Arunsi
- Department of Cancer Immunology and Biotechnology, School of Medicine, University of Nottingham, Nottingham, UK
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
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Owumi SE, Ajakaiye B, Akinwunmi AO, Nwozo SO, Oyelere AK. The Hydrophobic Extract of Sorghum bicolor (L. Moench) Enriched in Apigenin-Protected Rats against Aflatoxin B1-Associated Hepatorenal Derangement. Molecules 2023; 28:molecules28073013. [PMID: 37049776 PMCID: PMC10095839 DOI: 10.3390/molecules28073013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
Aflatoxin B1 (AFB1) is a recalcitrant metabolite produced by fungi species, and due to its intoxications in animals and humans, it has been classified as a Group 1 carcinogen in humans. Preserving food products with Sorghum bicolor sheath can minimise the contamination of agricultural products and avert ill health occasioned by exposure to AFB1. The current study investigated the ameliorating effect of Sorghum bicolor sheath hydrophobic extract (SBE-HP) enriched in Apigenin (API) on the hepatorenal tissues of rats exposed to AFB1. The SBE-HP was characterised using TLC and LC-MS and was found to be enriched in Apigenin and its methylated analogues. The study used adult male rats divided into four experimental cohorts co-treated with AFB1 (50 µg/kg) and SBE-HP (5 and 10 mg/kg) for 28 days. Biochemical, enzyme-linked immunosorbent assays (ELISA) and histological staining were used to examine biomarkers of hepatorenal function, oxidative status, inflammation and apoptosis, and hepatorenal tissue histo-architectural alterations. Data were analysed using GraphPad Prism 8.3.0, an independent t-test, and a one-way analysis of variance. Co-treatment with SBE-HP ameliorated an upsurge in the biomarkers of hepatorenal functionality in the sera of rats, reduced the alterations in redox balance, resolved inflammation, inhibited apoptosis, and preserved the histological features of the liver and kidney of rats exposed to AFB1. SBE-HP-containing API is an excellent antioxidant regiment. It can amply prevent the induction of oxidative stress, inflammation, and apoptosis in the hepatorenal system of rats. Therefore, supplementing animal feeds and human foods with SBE-HP enriched in Apigenin may reduce the burden of AFB1 intoxication in developing countries with a shortage of effective antifungal agents.
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Affiliation(s)
- Solomon E. Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan 200005, Nigeria
- Correspondence: (S.E.O.); (A.K.O.)
| | - Blessing Ajakaiye
- Nutrition and Industrial Biochemistry Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan 200005, Nigeria
| | - Adenike O. Akinwunmi
- Department of Chemistry, Ekiti State University, Ado-Ekiti, Ekiti 360001, Nigeria
| | - Sarah O. Nwozo
- Nutrition and Industrial Biochemistry Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan 200005, Nigeria
| | - Adegboyega K. Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Correspondence: (S.E.O.); (A.K.O.)
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Chandrasekaran B, Tapadar S, Wu B, Saran U, Tyagi A, Johnston A, Gaul DA, Oyelere AK, Damodaran C. Antiandrogen-Equipped Histone Deacetylase Inhibitors Selectively Inhibit Androgen Receptor (AR) and AR-Splice Variant (AR-SV) in Castration-Resistant Prostate Cancer (CRPC). Cancers (Basel) 2023; 15:cancers15061769. [PMID: 36980655 PMCID: PMC10046692 DOI: 10.3390/cancers15061769] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
Background: Epigenetic modification influences androgen receptor (AR) activation, often resulting in prostate cancer (PCa) development and progression. Silencing histone-modifying enzymes (histone deacetylases-HDACs) either genetically or pharmacologically suppresses PCa proliferation in preclinical models of PCa; however, results from clinical studies were not encouraging. Similarly, PCa patients eventually become resistant to androgen ablation therapy (ADT). Our goal is to develop dual-acting small molecules comprising antiandrogen and HDAC-inhibiting moieties that may overcome the resistance of ADT and effectively suppress the growth of castration-resistant prostate cancer (CRPC). Methods: Several rationally designed antiandrogen-equipped HDAC inhibitors (HDACi) were synthesized, and their efficacy on CRPC growth was examined both in vitro and in vivo. Results: While screening our newly developed small molecules, we observed that SBI-46 significantly inhibited the proliferation of AR+ CRPC cells but not AR- CRPC and normal immortalized prostate epithelial cells (RWPE1) or normal kidney cells (HEK-293 and VERO). Molecular analysis confirmed that SBI-46 downregulated the expressions of both AR+ and AR-splice variants (AR-SVs) in CRPC cells. Further studies revealed the downregulation of AR downstream (PSA) events in CRPC cells. The oral administration of SBI-46 abrogated the growth of C4-2B and 22Rv1 CRPC xenograft tumors that express AR or both AR and AR-SV in xenotransplanted nude mice models. Further, immunohistochemical analysis confirmed that SBI-46 inhibits AR signaling in xenografted tumor tissues. Conclusion: These results demonstrate that SBI-46 is a potent agent that inhibits preclinical models of CRPC by downregulating the expressions of both AR and AR-SV. Furthermore, these results suggest that SBI-46 may be a potent compound for treating CRPC.
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Affiliation(s)
| | - Subhasish Tapadar
- Parker H. Petit Institute for Bioengineering & Biosciences, School of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - Bocheng Wu
- Parker H. Petit Institute for Bioengineering & Biosciences, School of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - Uttara Saran
- Rangel School of Pharmacy, Texas A&M University, College Station, TX 77845, USA
| | - Ashish Tyagi
- Rangel School of Pharmacy, Texas A&M University, College Station, TX 77845, USA
| | - Alexis Johnston
- Parker H. Petit Institute for Bioengineering & Biosciences, School of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - David A. Gaul
- Parker H. Petit Institute for Bioengineering & Biosciences, School of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
| | - Adegboyega K. Oyelere
- Parker H. Petit Institute for Bioengineering & Biosciences, School of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, GA 30332, USA
- Correspondence: (A.K.O.); (C.D.); Tel.: +1-404-894-4047 (A.K.O.); +1-979-436-0495 (C.D.)
| | - Chendil Damodaran
- Rangel School of Pharmacy, Texas A&M University, College Station, TX 77845, USA
- Correspondence: (A.K.O.); (C.D.); Tel.: +1-404-894-4047 (A.K.O.); +1-979-436-0495 (C.D.)
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Owumi SE, Otunla MT, Arunsi UO, Oyelere AK. Apigeninidin-enriched Sorghum bicolor (L. Moench) extracts alleviate Aflatoxin B 1-induced dysregulation of male rat hypothalamic-reproductive axis. Exp Biol Med (Maywood) 2022; 247:1301-1316. [PMID: 35658587 PMCID: PMC9442456 DOI: 10.1177/15353702221098060] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
We examined the protective effect of the apigeninidin (API)-enriched fraction from Sorghum bicolor sheaths extracts (SBE-05, SBE-06, and SBE-07) against aflatoxin B1 (AFB1)-induced dysregulation of male rat's reproductive system that may trigger infertility. Male rats (160 ± 12 g) were treated with AFB1 (50 µg/kg) along with 5 or 10 mg/kg of SBE-05, SBE-06, and SBE-07 for 28 days. Subsequently, we assessed the reproductive hormone-prolactin, FSH, LH, testosterone levels, and testicular function enzymes. Moreover, we examined rats' testes, epididymis, and hypothalamus for oxidative and inflammatory stress biomarkers, caspase-9 activity and tissues pathology. We observed that comparative to AFB1 alone treated rats, API co-treatment significantly (p < 0.05) abated the AFB1-mediated decrease in prolactin and antioxidant defenses and lessened lipid peroxidation (LPO) and reactive oxygen and nitrogen species levels in the examined organs-testes, epididymis, and hypothalamus. API abated AFB1-induced hormone decreases-testosterone, FSH, and LH; and caused improvement in sperm quantity and quality. API lessened AFB1-mediated increase in pro-inflammatory cytokine, increased interleukin-10 level, an anti-inflammatory cytokine and reduced caspase-9 activities. In addition, API reduced alterations in the examined tissue histology. Our findings suggest that S. bicolor API-enrich extracts have active antioxidative, antiapoptotic, and anti-inflammatory activities, which can protect against AFB1-induced dysfunction of the hypothalamic-pituitary-gonadal axis.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology
Laboratories, NB 302, Department of Biochemistry, Faculty of Basic Medical Sciences,
University of Ibadan, Ibadan 200005, Nigeria,Solomon E Owumi.
| | - Moses T Otunla
- Cancer Research and Molecular Biology
Laboratories, NB 302, Department of Biochemistry, Faculty of Basic Medical Sciences,
University of Ibadan, Ibadan 200005, Nigeria
| | - Uche O Arunsi
- Department of Cancer Immunology and
Biotechnology, School of Medicine, University of Nottingham, Nottingham NG7 2RD,
UK
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry,
Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of
Technology, Atlanta, GA 30332-0400, USA
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11
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Owumi SE, Irozuru CE, Arunsi UO, Faleke HO, Oyelere AK. Caffeic acid mitigates aflatoxin B1-mediated toxicity in the male rat reproductive system by modulating inflammatory and apoptotic responses, testicular function, and the redox-regulatory systems. J Food Biochem 2022; 46:e14090. [PMID: 35112365 DOI: 10.1111/jfbc.14090] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/26/2021] [Accepted: 01/06/2022] [Indexed: 12/13/2022]
Abstract
Aflatoxin B1 (AFB1 ) is a toxic metabolite of public health concern. The present study investigates the protective effects of caffeic acid (CA) against AFB1 -induced oxidative stress, inflammation, and apoptosis in the hypothalamus, epididymis, and testis of male rats. Five experimental rat cohorts (n = 6) were treated per os for 28 consecutive days as follows: Control (Corn oil 2 ml/kg body weight), AFB1 alone (50μg/kg), CA alone (40 mg/kg) and the co-treated rat cohorts (AFB1 : 50μg/kg + CA1: 20 or 40 mg/kg). Following sacrifice, the biomarkers of hypothalamic, epididymal, and testicular toxicities, antioxidant enzyme activities, myeloperoxidase (MPO) activity, as well as levels of nitric oxide (NO), reactive oxygen and nitrogen (RONS) species and lipid peroxidation (LPO) were analysed spectrophotometrically. Besides, the concentration of tumour necrosis factor-alpha (TNF-α), Bcl-2 and Bax proteins were assessed using ELISA. Results showed that the AFB1 -induced decrease in biomarkers of testicular, epididymal and hypothalamic toxicity was significantly (p < .05) alleviated in rats coexposed to CA. Moreover, the reduction of antioxidant status and the increase in RONS and LPO were lessened (p < .05) in rats co-treated with CA. AFB1 mediated increase in TNF-α, Bax, NO and MPO activity were reduced (p< .05) in the hypothalamus, epididymis, and testis of rats coexposed to CA. In addition, Bcl-2 levels were reduced in rats treated with CA dose-dependently. Light microscopic examination showed that histopathological lesions severity induced by AFB1 were alleviated in rats coexposed to CA. Taken together, the amelioration of AFB1 -induced neuronal and reproductive toxicities by CA involves anti-inflammatory, antioxidant, antiapoptotic mechanisms in rats. PRACTICAL APPLICATIONS: The beneficial antioxidant effects of caffeic acid (CA) are attributed to CA delocalized aromatic rings and free electrons, easily donated to stabilize reactive oxygen species. We report in vivo findings on CA and AfB1 mediated oxidative stress and reproductive dysfunction in rats. CA conjugated esters including chlorogenic acids are widely distributed in plants, and they act as a dietary source of natural defense against infections. CA can chelate heavy metals and reduce production of damaging free radicals to cellular macromolecules. Along these lines, CA can stabilize aflatoxin B1-epoxide as well and avert deleterious conjugates from forming with deoxyribonucleic acids. Hence CA, as a dietary phytochemical can protect against the damaging effects of toxins including aflatoxin B1 that contaminate food. CA dose-dependently abated oxidative, inflammatory, and apoptotic stimuli, improved functional characteristics of spermatozoa and reproductive hormone levels, and prevented histological alterations in experimental rats' hypothalamus and reproductive organs brought about by AFB1 toxicity.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Chioma E Irozuru
- Molecular Drug Metabolism Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Uche O Arunsi
- Department of Cancer Immunology and Biotechnology, School of Medicine, University of Nottingham, Nottingham, UK
| | - Hammed O Faleke
- Membrane Biochemistry and Biotechnology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
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Owumi SE, Irozuru CE, Arunsi UO, Oyelere AK. Caffeic acid protects against DNA damage, oxidative and inflammatory mediated toxicities, and upregulated caspases activation in the hepatorenal system of rats treated with aflatoxin B 1. Toxicon 2022; 207:1-12. [PMID: 34995555 DOI: 10.1016/j.toxicon.2021.12.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 12/25/2021] [Accepted: 12/30/2021] [Indexed: 12/13/2022]
Abstract
Aflatoxicosis can induce largescale toxicities in predisposed populations. Food fortification with adequate antioxidant sources may reduce the toxic burden from aflatoxicosis. We examined the individual and combined effect of Caffeic acid (CA) on the aflatoxin B1 (AFB1)-induced hepatic and renal injury in male rats. Five experimental rat cohort (n = 6) consisting of the control (2 mL/kg corn oil), AFB1 alone (50 μg/kg), CA alone (40 mg/kg), AFB1+CA1 (50 μg/kg + 20 mg/kg) and AFB1+CA2 (50 μg/kg + 40 mg/kg) were so treated for 28 consecutive days. Upon sacrifices, diagnostic markers of hepatorenal functions, oxidative stress, inflammation, oxidative deoxyribonucleic acid -DNA-damage and apoptosis were analysed. Our results showed that CA reduced AFB1-induced toxicities in rats' liver and kidneys by significantly increasing (p < 0.05) endogenous antioxidant and the anti-inflammatory IL-10 level. Caffeic acid simultaneously reduced hepatic and renal dysfunction biomarkers in the serum, oxidative stress, and lipid peroxidation levels. Besides, CA diminished reactive oxygen and nitrogen species, inflammatory nitric oxide levels, interleukin-1 β and the activities of xanthine oxidase and myeloperoxidase. Additionally, CA reduced DNA damage and caspase-mediated apoptotic responses and preserved the cytoarchitecture of rats' liver and kidneys treated with AFB1. These data suggest that CA can be used as a food additive to mitigate AFB1-induced toxicity in the examined organs.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, 200004, Nigeria.
| | - Chioma E Irozuru
- Molecular Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, 200004, Nigeria
| | - Uche O Arunsi
- Department of Cancer Immunology and Biotechnology, School of Medicine, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
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Owumi SE, Adedara IA, Oyelere AK. Indole-3-propionic acid mitigates chlorpyrifos-mediated neurotoxicity by modulating cholinergic and redox-regulatory systems, inflammatory stress, apoptotic responses and DNA damage in rats. Environ Toxicol Pharmacol 2022; 89:103786. [PMID: 34915193 DOI: 10.1016/j.etap.2021.103786] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/13/2021] [Accepted: 12/07/2021] [Indexed: 05/10/2023]
Abstract
This study probed the neuroprotective influence of indole-3-propionic acid (IPA) in rats exposed to chlorpyrifos (CPF) alone at 5 mg/kg body weight or co-administered with IPA at 12.5 and 25 mg/kg for 14 days. Behavioral data indicated that IPA significantly (p < 0.05) abated CPF-mediated anxiogenic-like behaviors with concomitant improvement in the locomotor and exploratory behaviors as substantiated by track plots and heat maps data. Also, IPA mitigated CPF-mediated diminution in cholinergic and antioxidant defense systems whereas it markedly improved thioredoxin level and thioredoxin reductase activity in cerebral and cerebellar tissues of the animals. Co-administration of IPA significantly enhanced anti-inflammatory cytokine, interleukin-10 but suppressed oxidative and inflammatory stress, caspase-9 and caspase-3 activation with concomitant reduction in 8-hydroxy-2'-deoxyguanosine (8-OHdG) level and histological damage. Collectively, IPA-mediated neuroprotection involves modulation of cholinergic and redox-regulatory systems, inflammatory stress, apoptotic responses and DNA damage in cerebrum and cerebellum of rats.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratory, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Adegboyega K Oyelere
- School of Biochemistry and Chemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
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Guerra Faura G, Wu B, Oyelere AK, France S. Synthetic Methodology-Enabled Discovery of a Tunable Indole Template for COX-1 Inhibition and Anti-cancer activity. Bioorg Med Chem 2022; 57:116633. [DOI: 10.1016/j.bmc.2022.116633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 01/10/2022] [Accepted: 01/20/2022] [Indexed: 02/07/2023]
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15
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Owumi S, Bello T, Oyelere AK. N-acetyl cysteine abates hepatorenal toxicities induced by perfluorooctanoic acid exposure in male rats. Environ Toxicol Pharmacol 2021; 86:103667. [PMID: 33933708 DOI: 10.1016/j.etap.2021.103667] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 04/10/2021] [Accepted: 04/27/2021] [Indexed: 05/28/2023]
Abstract
Ingestion of perfluorooctanoic acid (PFOA) elicits toxicities in the hepatorenal system. We investigated the effect of PFOA and N-acetylcysteine (NAC) on the hepatorenal function of rats treated thus: control, PFOA (5 mg/kg), NAC (50 mg/kg), PFOA + NAC (5 and 25 mg/kg), and PFOA + NAC (5 and 50 mg/kg). We observed that NAC significantly (p < 0.05) reduced PFOA-induced increase in hepatic and renal function biomarkers of toxicities relative to PFOA alone and alleviated (p < 0.05) decreases in antioxidant status. Increases in oxidative stress and lipid peroxidation in PFOA-treated rats were reverted to normal by NAC and abated increased pro-inflammatory mediators, and decreased anti-inflammatory cytokine both in the hepatorenal system PFOA treated rats. Histology of the kidney and liver indicated that NAC, abated the severity of PFOA-induced damage significantly. Our findings affirm further that oxido-inflammatory mediators involved in PFOA-mediated toxicity can be effectively blocked by NAC through its antioxidant activity.
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Affiliation(s)
- Solomon Owumi
- CRMB Laboratory, Biochemistry Department, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, 200004, Nigeria.
| | - Taofeek Bello
- CRMB Laboratory, Biochemistry Department, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan, 200004, Nigeria
| | - Adegboyega K Oyelere
- School of Biochemistry and Chemistry, and Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
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16
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Owumi SE, Adeniyi G, Oyelere AK. The modulatory effect of taurine on benzo (a) pyrene-induced hepatorenal toxicity. Toxicol Res (Camb) 2021; 10:389-398. [PMID: 34141152 DOI: 10.1093/toxres/tfab016] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 01/03/2023] Open
Abstract
Toxicities linked with Benzo (a) pyrene B[a]P exposure, particularly in liver and kidney have been reported in both animals and humans. Taurine (2-aminoethane sulfonic acid) is an intracellular β-amino acid reported to elicit hepatorenal protective functions. However, the modulatory effect of taurine on hepatorenal toxicity associated with exposure to B[a]P has not been reported. This study evaluated the effects of taurine on the hepatorenal toxicities induced in cohorts of rats exposed to B[a]P. Experimental rats were treated as follows: B[a]P (10 mg/kg); co-treated cohorts -B[a]P (10 mg/kg) plus taurine (100 or 200 mg/kg) for 4 successive weeks. Results show that co-dosing with taurine significantly (P < 0.05) improved B[a]P-induced distortion of oxidative stress markers (catalase, superoxide dismutase, glutathione S-transferase, glutathione peroxidase, total sulphydryl, reduced glutathione, lipid peroxidation and xanthine oxidase), renal function (urea and creatinine) and liver function marker enzymes (alkaline phosphatase, aspartate aminotransferase, alanine aminotransferase and gamma glutamyl transferase). Moreover, taurine effectively mitigated increase in myeloperoxidase activity, levels of reactive oxygen and nitrogen species, nitric oxide and interleukin-1β in kidney and liver of rats treated with B[a]P. In conclusion, taurine modulates hepatorenal toxicity in B[a]P-exposed rats by suppressing hepatic and renal damage indices, oxidative injury and inflammatory stress.
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Affiliation(s)
- Solomon E Owumi
- CRMB Laboratory, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Oyo State, 200004, Nigeria
| | - Gideon Adeniyi
- CRMB Laboratory, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Oyo State, 200004, Nigeria
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
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Owumi SE, Lewu DO, Arunsi UO, Oyelere AK. Luteolin attenuates doxorubicin-induced derangements of liver and kidney by reducing oxidative and inflammatory stress to suppress apoptosis. Hum Exp Toxicol 2021; 40:1656-1672. [PMID: 33827303 DOI: 10.1177/09603271211006171] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Doxorubicin is an effective anti-neoplastic agent; the reported toxicities of DOX limit its use. Luteolin is a polyphenolic phytochemical that exhibits beneficial biological effects via several mechanisms. We investigate luteolin protective effects on hepatorenal toxicity associated with doxorubicin treatment in rats. For 2 weeks, randomly assigned rat cohorts were treated as follows: control, luteolin (100 mg/kg; per os), doxorubicin alone (2mg/kg; by intraperitoneal injection), co-treated cohorts received luteolin (50 and 100 mg/kg) in addition to doxorubicin. Treatment with doxorubicin alone significantly (p < 0.05) increased biomarkers of hepatorenal toxicities in the serum. Doxorubicin also reduced relative organ weights, antioxidant capacity, and anti-inflammatory cytokine interleukine-10. Doxorubicin also increased reactive oxygen and nitrogen species, lipid peroxidation, pro-inflammatory-interleukin-1β and tumour necrosis factor-α-cytokine, and apoptotic caspases-3 and -9). Morphological damage accompanied these biochemical alterations in the rat's liver and kidney treated with doxorubicin alone. Luteolin co-treatment dose-dependently abated doxorubicin-mediated toxic responses, improved antioxidant capacity and interleukine-10 level. Luteolin reduced (p < 0.05) lipid peroxidation, caspases-3 and -9 activities and marginally improved rats' survivability. Similarly, luteolin co-treated rats exhibited improvement in hepatorenal pathological lesions observed in rats treated with doxorubicin alone. In summary, luteolin co-treatment blocked doxorubicin-mediated hepatorenal injuries linked with pro-oxidative, inflammatory, and apoptotic mechanisms. Therefore, luteolin can act as a chemoprotective agent in abating toxicities associated with doxorubicin usage and improve its therapeutic efficacy.
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Affiliation(s)
- S E Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, 113092College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - D O Lewu
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, 113092College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - U O Arunsi
- School of Medicine, Cancer Immunology and Biotechnology, Department of Biosciences, University of Nottingham, UK
| | - A K Oyelere
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, 1372Georgia Institute of Technology, Atlanta, GA, USA
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Owumi SE, Akomolafe AP, Imosemi IO, Odunola OA, Oyelere AK. N-acetyl cysteine co-treatment abates perfluorooctanoic acid-induced reproductive toxicity in male rats. Andrologia 2021; 53:e14037. [PMID: 33724529 DOI: 10.1111/and.14037] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/03/2021] [Accepted: 02/19/2021] [Indexed: 12/14/2022] Open
Abstract
Perfluorooctanoic acid is a synthetic perfluoroalkyl-persistent in the environment and toxic to humans. N-acetylcysteine is a pro-drug of both amino acid l-cysteine and glutathione-a non-enzymatic antioxidant. N-acetylcysteine serves as an antidote for paracetamol poisoning and alleviates cellular oxidative and inflammatory stressors. We investigated N-acetylcysteine role against reproductive toxicity in male Wistar rats (weight: 140-220 g; 10 weeks old) posed by perfluorooctanoic acid exposure. Randomised rat cohorts were dosed both with perfluorooctanoic acid (5 mg/kg; p.o) or co-dosed with N-acetylcysteine (25 and 50 mg/kg p.o) for 28 days. Sperm physiognomies, biomarkers of testicular function and reproductive hormones, oxidative stress and inflammation were evaluated. Co-treatment with N-acetylcysteine significantly (p < .05) reversed perfluorooctanoic acid-mediated decreases in reproductive enzyme activities, and adverse effect on testosterone, luteinising and follicle-stimulating hormone concentrations. N-acetylcysteine treatment alone, improved sperm motility, count and viability, and reduced total sperm abnormalities. Co-treatment with N-acetylcysteine mitigated perfluorooctanoic acid-induced alterations in sperm function parameters. N-acetylcysteine abated (p < .05) perfluorooctanoic acid-induced oxidative stress in experimental rats testes and epididymis, and generally improved antioxidant enzyme activities and cellular thiol levels. Furthermore, N-acetylcysteine suppressed inflammatory responses and remedied perfluorooctanoic acid-mediated histological injuries in rat. Cooperatively, N-acetylcysteine enhanced reproductive function in perfluorooctanoic acid dosed rats, by lessening oxidative and nitrative stressors and mitigated inflammatory responses in the examined organ.
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Affiliation(s)
- Solomon E Owumi
- Change-Lab, CRMB Laboratory, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Ayomide P Akomolafe
- Change-Lab, CRMB Laboratory, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Innocent O Imosemi
- Neuroanatomy Research Laboratories, Department of Anatomy, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Oyeronke A Odunola
- Change-Lab, CRMB Laboratory, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Adegboyega K Oyelere
- School of Biochemistry and Chemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
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E Owumi S, K Olusola J, O Arunsi U, K Oyelere A. Chlorogenic acid abates oxido-inflammatory and apoptotic responses in the liver and kidney of Tamoxifen-treated rats. Toxicol Res (Camb) 2021; 10:345-353. [PMID: 33884184 PMCID: PMC8045591 DOI: 10.1093/toxres/tfab002] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/18/2020] [Accepted: 01/08/2021] [Indexed: 12/12/2022] Open
Abstract
Plant-derived phenolics are utilized as chemopreventive agents to abate adverse toxic responses associated with drug-induced damages. Tamoxifen (TAM)-a chemotherapeutic agent-is used in managing all stages of hormone-dependent breast cancer. Notwithstanding TAM's clinical side effect-including hepatic toxicity-its use is commonplace. The present study investigates the effect of Chlorogenic acid (CGA: 25 and 50 mg kg-1; per os (p.o)) reported to exhibit various beneficial properties, including antioxidative effect against TAM (50 mg/kg; p.o.)-induced hepatorenal toxicities in rats treated as follows: Control, CGA, or TAM alone, and rats co-treated with CGA and TAM for 2 weeks. Biomarkers of hepatorenal function, oxido-inflammatory stress, and hepatorenal histopathology were performed. We observed that TAM alone decreased relative organ weights (ROW), marginally impacted rat's survivability, and significantly (P < 0.05) increased hepatorenal toxicities and reactive oxygen and nitrogen species (RONS). TAM decreased (P < 0.05) antioxidant, anti-inflammatory cytokine (IL-10), besides increase in (P < 0.05) lipid peroxidation (LPO), pro-inflammatory cytokines (IL-1β, TNF-α), nitric oxide (NO), xanthine oxidase (XO), myeloperoxidase (MPO), and apoptotic caspases (Casp-3 and -9) levels. These biochemical alterations were accompanied by morphological lesions in experimental rats' liver and kidney. Conversely, that CGA dose-dependently relieved TAM-mediated toxic responses, restored antioxidants capacities, reduced oxidative stress, pro-inflammatory cytokines levels, and Casp-3 and -9 activities in experimental rats. Furthermore, CGA protected against lesions observed in the liver and kidney of rats treated with TAM alone. Overall, CGA blocked TAM-mediated hepatorenal injuries associated with pro-oxidative, inflammatory, and apoptotic mechanisms. CGA may serve as a chemoprotective agent boosting patients prognosis undergoing TAM chemotherapy.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan 200004, Nigeria
| | - Joseph K Olusola
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, University of Ibadan, Ibadan 200004, Nigeria
| | - Uche O Arunsi
- Department of Cancer Immunology and Biotechnology, School of Medicine, University of Nottingham, NG7 2RD, UK
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
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Abstract
Furan formed in processed food is hepatotoxic and likely carcinogenic in humans. We investigated protocatechuic acid (PCA) protective role in rats' hepatorenal function treated with furan. Rats were grouped and treated as follows: Control, PCA (50 mg/kg), furan alone (8 mg/kg), furan + PCA1 (25 + 8 mg/kg), and furan + PCA2 (50 + 8 mg/kg). Upon sacrifice, evaluation of hepatorenal function, oxidative stress status, reactive oxygen and nitrogen species (RONS), lipid peroxidation (LPO), myeloperoxidase (MPO) activity, among nitric oxide (NO) levels were performed. Cytokine levels (IL-10, IL-1ß, TNF-alpha), Caspase 3 and 9 activities, and histopathological examination were also assessed. We found that the final body and relative liver weights changed significantly (p < 0.05) in treated groups. Hepatic transaminases, urea, and creatinine increased (p < 0.05) in furan only treated group, and reduced in PCA co-treated groups. The furan-induced decrease in antioxidant status increased RONS, and LPO levels were alleviated (p < 0.05) by PCA co-treatment. Furthermore, furan-mediated increase in NO, IL-1ß, TNF-alpha levels, MPO, Cas-3, and 9 activities and suppressed IL-10 levels was reversed accordingly in rats' kidney and liver co-treated with PCA. The extent of furan-mediated hepatorenal lesions was lessened in PCA co-treated rats. Our findings suggest that PCA protects against oxido-inflammatory pathways, enhanced caspases 3 and 9 activations induced by furan in rat hepatorenal system.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, University of Ibadan, Ibadan, Nigeria
| | - Samuel A Bello
- Nutrition and Industrial Biochemistry Laboratories, Department of Biochemistry, University of Ibadan, Ibadan, Nigeria
| | - Temitope B Idowu
- Nutrition and Industrial Biochemistry Laboratories, Department of Biochemistry, University of Ibadan, Ibadan, Nigeria
| | - Uche O Arunsi
- Department of Cancer Immunology and Biotechnology, School of Medicine, University of Nottingham, Nottingham, UK
| | - Adegboyega K Oyelere
- School of Biochemistry and Chemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
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Owumi SE, Anaikor RA, Arunsi UO, Adaramoye OA, Oyelere AK. Chlorogenic acid co-administration abates tamoxifen-mediated reproductive toxicities in male rats: An experimental approach. J Food Biochem 2021; 45:e13615. [PMID: 33491243 DOI: 10.1111/jfbc.13615] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/18/2020] [Accepted: 01/04/2021] [Indexed: 12/16/2022]
Abstract
Reports over the years have demonstrated toxic side effect-including reproductive toxicity- of tamoxifen (TAM), a drug of choice in the management of primary breast cancer. Chlorogenic acid (CGA), a dietary polyphenol, reportedly elicits beneficial pharmacological effects. However, the impact of CGA on TAM-associated reproductive toxicity is absent in the literature. We, therefore, experimented on CGA's effect and TAM-mediated reproductive toxicity in rats. Cohorts of rats were treated with TAM (50 mg/kg) or co-treated with CGA (25 or 50 mg/kg) for 14 consecutive days. The result showed that treatment of CGA significantly increases testosterone, LH, and FSH levels compared to the TAM group. However, prolactin level was markedly decreased after pretreatment of CGA in TAM-treated rats. CGA abated TAM-induced decreases acid phosphatase, alkaline phosphatase, and antioxidant enzymes in the testis. CGA alleviated TAM-facilitated surges of reactive oxygen and nitrogen species, myeloperoxidase, nitric oxide, interleukin-1β, and tumor necrosis factor-alpha in rats epididymis and testes. Additionally, CGA increased anti-inflammatory cytokine -interleukin-10-, suppressed caspase-3 activity, and reduced pathological lesions in the examined organs of rats co-treated with CGA and TAM. CGA phytoprotective effect improved reproductive function occasioned by TAM-mediated toxicities in rats, by abating oxido-inflammatory damages and downregulating apoptotic responses. PRACTICAL APPLICATIONS: CGA protects against the damaging oxido-inflammatory responses incumbent on TAM metabolism. As an antioxidant abundant in plant-derived foods, CGA reportedly protects against inflammatory damage, hypertension, and neurodegenerative diseases. We present evidence that CGA ameliorates TAM-induced reproductive dysfunction by suppressing oxidative and inflammation stress downregulate apoptosis and improve reproductive function biomarker in rats.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, Biochemistry Department, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Ruth A Anaikor
- Cancer Research and Molecular Biology Laboratories, Biochemistry Department, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Uche O Arunsi
- Cancer Immunology and Biotechnology Center, The University of Nottingham, Nottingham, UK
| | - Oluwatosin A Adaramoye
- Molecular Drug Metabolism and Toxicology Research Laboratories, Biochemistry Department, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
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22
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Owumi SE, Nwozo SO, Arunsi UO, Oyelere AK, Odunola OA. Co-administration of Luteolin mitigated toxicity in rats' lungs associated with doxorubicin treatment. Toxicol Appl Pharmacol 2021; 411:115380. [PMID: 33358696 DOI: 10.1016/j.taap.2020.115380] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/11/2020] [Accepted: 12/17/2020] [Indexed: 02/06/2023]
Abstract
Doxorubicin (DOX), is a drug against lung malignancies with undesirable side effect including oxidative, inflammatory and apoptotic effects. Luteolin (LUT), present in fruits and vegetables is pharmacologically active against oxido-inflammatory and apoptotic responses. The present study examined the effect of LUT on DOX-induced lungs and blood dysfunction in Wistars rat (sex: male; 10 weeks old, 160 ± 5 g). Randomly grouped (n = 10) rats were treated as follows: control, LUT alone (100 mg/kg; per os), DOX (2 mg/kg; i. p), and co-treated rats with LUT (50 or 100 mg/kg) and DOX for two consecutive weeks. DOX alone adversely altered the final body and relative organ weights, red and white blood cell and platelet counts. DOX significantly (p > 0.05) reduced lungs antioxidant capacity, and anti-inflammatory cytokines; increased biomarkers of oxidative stress, caspase-3 activity, and pro-inflammatory cytokine. Morphological damages accompanied these biochemical alterations in the lung of experimental rats. Co-treatment with LUT, dose-dependently reversed DOX-mediated changes in rats' survival, toxic responses, and diminished oxidative stress in rat's lungs. Furthermore, co-treatment with LUT resulted in the reduction of pro-inflammatory cytokines and apoptotic biomarkers, increased red and white blood cell, platelet counts and abated pathological injuries in rat lungs treated with DOX alone. In essence, our findings indicate that LUT dose-dependently mitigated DOX-induced toxicities in the lungs and haematopoietic systems. Supplementation of patients on DOX-chemotherapy with phytochemicals exhibiting antioxidant activities, specifically LUT, could circumvent the onset of unintended toxic responses in the lungs and haematopoietic system exposed to DOX.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratories, University of Ibadan, Ibadan, Nigeria.
| | - Sarah O Nwozo
- Nutrition and Industrial Biochemistry Laboratories, Department of Biochemistry, Faculty of Basic Medical Sciences, University of Ibadan, Ibadan, Nigeria
| | - Uche O Arunsi
- Cancer Immunology and Biotechnology Center, The University of Nottingham, Nottingham NG8 1AF, UK
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Oyeronke A Odunola
- Cancer Research and Molecular Biology Laboratories, University of Ibadan, Ibadan, Nigeria
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23
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Adedara IA, Owumi SE, Oyelere AK, Farombi EO. Neuroprotective role of gallic acid in aflatoxin B 1 -induced behavioral abnormalities in rats. J Biochem Mol Toxicol 2020; 35:e22684. [PMID: 33319922 DOI: 10.1002/jbt.22684] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/07/2020] [Accepted: 11/26/2020] [Indexed: 12/12/2022]
Abstract
The neurotoxic impact of dietary exposure to aflatoxin B1 (AFB1 ) is documented in experimental and epidemiological studies. Gallic acid (GA) is a triphenolic phytochemical with potent anticancer, anti-inflammatory, and antioxidant activities. There is a knowledge gap on the influence of GA on AFB1 -induced neurotoxicity. This study probed the influence of GA on neurobehavioral and biochemical abnormalities in rats orally treated with AFB1 per se (75 µg/kg body weight) or administered together with GA (20 and 40 mg/kg) for 28 uninterrupted days. Behavioral endpoints obtained with video-tracking software demonstrated significant (p < .05) abatement of AFB1 -induced anxiogenic-like behaviors (increased freezing, urination, and fecal bolus discharge), motor and locomotor inadequacies, namely increased negative geotaxis and diminished grip strength, absolute turn angle, total time mobile, body rotation, maximum speed, and total distance traveled by GA. The improvement of exploratory behavior in animals that received both AFB1 and GA was confirmed by track plots and heat maps appraisal. Abatement of AFB1 -induced decreases in acetylcholinesterase activity, antioxidant status and glutathione level by GA was accompanied by a marked reduction in oxidative stress markers in the cerebellum and cerebrum of rats. Additionally, GA treatment abrogated AFB1 -mediated decrease in interleukin-10 and elevation of inflammatory indices, namely tumor necrosis factor-α, myeloperoxidase activity, interleukin-1β, and nitric oxide. Further, GA treatment curtailed caspase-3 activation and histological injuries in the cerebral and cerebellar tissues. In conclusion, abatement of AFB1 -induced neurobehavioral abnormalities by GA involves anti-inflammatory, antioxidant, and antiapoptotic mechanisms in rats.
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Affiliation(s)
- Isaac A Adedara
- Department of Biochemistry, Drug Metabolism and Toxicology Research Laboratories, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Solomon E Owumi
- Department of Biochemistry, Cancer Research and Molecular Biology Laboratory, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Adegboyega K Oyelere
- School of Biochemistry and Chemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia, USA
| | - Ebenezer O Farombi
- Department of Biochemistry, Drug Metabolism and Toxicology Research Laboratories, College of Medicine, University of Ibadan, Ibadan, Nigeria
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24
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Jia YF, Jeeva S, Xu J, Heppelmann CJ, Jang JS, Slama MQ, Tapadar S, Oyelere AK, Kang SM, Matveyenko AV, Peterson QP, Shin CH. TBK1 regulates regeneration of pancreatic β-cells. Sci Rep 2020; 10:19374. [PMID: 33168920 PMCID: PMC7653919 DOI: 10.1038/s41598-020-76600-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 10/22/2020] [Indexed: 12/11/2022] Open
Abstract
Small-molecule inhibitors of non-canonical IκB kinases TANK-binding kinase 1 (TBK1) and IκB kinase ε (IKKε) have shown to stimulate β-cell regeneration in multiple species. Here we demonstrate that TBK1 is predominantly expressed in β-cells in mammalian islets. Proteomic and transcriptome analyses revealed that genetic silencing of TBK1 increased expression of proteins and genes essential for cell proliferation in INS-1 832/13 rat β-cells. Conversely, TBK1 overexpression decreased sensitivity of β-cells to the elevation of cyclic AMP (cAMP) levels and reduced proliferation of β-cells in a manner dependent on the activity of cAMP-hydrolyzing phosphodiesterase 3 (PDE3). While the mitogenic effect of (E)3-(3-phenylbenzo[c]isoxazol-5-yl)acrylic acid (PIAA) is derived from inhibition of TBK1, PIAA augmented glucose-stimulated insulin secretion (GSIS) and expression of β-cell differentiation and proliferation markers in human embryonic stem cell (hESC)-derived β-cells and human islets. TBK1 expression was increased in β-cells upon diabetogenic insults, including in human type 2 diabetic islets. PIAA enhanced expression of cell cycle control molecules and β-cell differentiation markers upon diabetogenic challenges, and accelerated restoration of functional β-cells in streptozotocin (STZ)-induced diabetic mice. Altogether, these data suggest the critical function of TBK1 as a β-cell autonomous replication barrier and present PIAA as a valid therapeutic strategy augmenting functional β-cells.
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Affiliation(s)
- Yun-Fang Jia
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Subbiah Jeeva
- Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, 30303, USA
| | - Jin Xu
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | | | - Jin Sung Jang
- Department of Lab Medicine and Pathology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Michael Q Slama
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA
| | - Subhasish Tapadar
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Sang-Moo Kang
- Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, 30303, USA
| | - Aleksey V Matveyenko
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA.,Center for Regenerative Medicine, Mayo Clinic, Rochester, MN, 55905, USA
| | - Quinn P Peterson
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA.,Center for Regenerative Medicine, Mayo Clinic, Rochester, MN, 55905, USA
| | - Chong Hyun Shin
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA. .,Institute for Biomedical Sciences, Georgia State University, Atlanta, GA, 30303, USA.
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25
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Tapadar S, Fathi S, Wu B, Sun CQ, Raji I, Moore SG, Arnold RS, Gaul DA, Petros JA, Oyelere AK. Liver-Targeting Class I Selective Histone Deacetylase Inhibitors Potently Suppress Hepatocellular Tumor Growth as Standalone Agents. Cancers (Basel) 2020; 12:E3095. [PMID: 33114147 PMCID: PMC7690782 DOI: 10.3390/cancers12113095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/19/2020] [Accepted: 10/19/2020] [Indexed: 01/06/2023] Open
Abstract
Dysfunctions in epigenetic regulation play critical roles in tumor development and progression. Histone deacetylases (HDACs) and histone acetyl transferase (HAT) are functionally opposing epigenetic regulators, which control the expression status of tumor suppressor genes. Upregulation of HDAC activities, which results in silencing of tumor suppressor genes and uncontrolled proliferation, predominates in malignant tumors. Inhibition of the deacetylase activity of HDACs is a clinically validated cancer therapy strategy. However, current HDAC inhibitors (HDACi) have elicited limited therapeutic benefit against solid tumors. Here, we disclosed a class of HDACi that are selective for sub-class I HDACs and preferentially accumulate within the normal liver tissue and orthotopically implanted liver tumors. We observed that these compounds possess exquisite on-target effects evidenced by their induction of dose-dependent histone H4 hyperacetylation without perturbation of tubulin acetylation status and G0/G1 cell cycle arrest. Representative compounds 2 and 3a are relatively non-toxic to mice and robustly suppressed tumor growths in an orthotopic model of HCC as standalone agents. Collectively, our results suggest that these compounds may have therapeutic advantage against HCC relative to the current systemic HDACi. This prospect merits further comprehensive preclinical investigations.
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Affiliation(s)
- Subhasish Tapadar
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332, USA; (S.T.); (S.F.); (B.W.); (I.R.); (S.G.M.)
- Sophia Bioscience, Inc. 311 Ferst Drive NW, Ste. L1325A, Atlanta, GA 30332, USA;
| | - Shaghayegh Fathi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332, USA; (S.T.); (S.F.); (B.W.); (I.R.); (S.G.M.)
| | - Bocheng Wu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332, USA; (S.T.); (S.F.); (B.W.); (I.R.); (S.G.M.)
| | - Carrie Q. Sun
- Department of Urology, Emory University School of Medicine, 1365 Clifton Road NE, Atlanta, GA 30322, USA; (C.Q.S.); (R.S.A.)
| | - Idris Raji
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332, USA; (S.T.); (S.F.); (B.W.); (I.R.); (S.G.M.)
| | - Samuel G. Moore
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332, USA; (S.T.); (S.F.); (B.W.); (I.R.); (S.G.M.)
| | - Rebecca S. Arnold
- Department of Urology, Emory University School of Medicine, 1365 Clifton Road NE, Atlanta, GA 30322, USA; (C.Q.S.); (R.S.A.)
| | - David A. Gaul
- Sophia Bioscience, Inc. 311 Ferst Drive NW, Ste. L1325A, Atlanta, GA 30332, USA;
| | - John A. Petros
- Department of Urology, Emory University School of Medicine, 1365 Clifton Road NE, Atlanta, GA 30322, USA; (C.Q.S.); (R.S.A.)
| | - Adegboyega K. Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA 30332, USA; (S.T.); (S.F.); (B.W.); (I.R.); (S.G.M.)
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332, USA
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26
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Caggia S, Tapadar S, Wu B, Venugopal SV, Garrett AS, Kumar A, Stiffend JS, Davis JS, Oyelere AK, Khan SA. Small Molecule Inhibitors Targeting Gα i2 Protein Attenuate Migration of Cancer Cells. Cancers (Basel) 2020; 12:E1631. [PMID: 32575572 PMCID: PMC7353059 DOI: 10.3390/cancers12061631] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/15/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022] Open
Abstract
Heterotrimeric G-proteins are ubiquitously expressed in several cancers, and they transduce signals from activated G-protein coupled receptors. These proteins have numerous biological functions, and they are becoming interesting target molecules in cancer therapy. Previously, we have shown that heterotrimeric G-protein subunit alphai2 (Gαi2) has an essential role in the migration and invasion of prostate cancer cells. Using a structure-based approach, we have synthesized optimized small molecule inhibitors that are able to prevent specifically the activation of the Gαi2 subunit, keeping the protein in its inactive GDP-bound state. We observed that two of the compounds (13 and 14) at 10 μΜ significantly inhibited the migratory behavior of the PC3 and DU145 prostate cancer cell lines. Additionally, compound 14 at 10 μΜ blocked the activation of Gαi2 in oxytocin-stimulated prostate cancer PC3 cells, and inhibited the migratory capability of DU145 cells overexpressing the constitutively active form of Gαi2, under basal and EGF-stimulated conditions. We also observed that the knockdown or inhibition of Gαi2 negatively regulated migration of renal and ovarian cancer cell lines. Our results suggest that small molecule inhibitors of Gαi2 have potential as leads for discovering novel anti-metastatic agents for attenuating the capability of cancer cells to spread and invade to distant sites.
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Affiliation(s)
- Silvia Caggia
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA; (S.C.); (S.V.V.); (A.S.G.); (A.K.); (J.S.S.)
| | - Subhasish Tapadar
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30318, USA; (S.T.); (B.W.)
| | - Bocheng Wu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30318, USA; (S.T.); (B.W.)
| | - Smrruthi V. Venugopal
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA; (S.C.); (S.V.V.); (A.S.G.); (A.K.); (J.S.S.)
| | - Autumn S. Garrett
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA; (S.C.); (S.V.V.); (A.S.G.); (A.K.); (J.S.S.)
| | - Aditi Kumar
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA; (S.C.); (S.V.V.); (A.S.G.); (A.K.); (J.S.S.)
| | - Janae S. Stiffend
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA; (S.C.); (S.V.V.); (A.S.G.); (A.K.); (J.S.S.)
| | - John S. Davis
- Department of Obstetrics and Gynecology, College of Medicine, University of Nebraska Medical Center and VA Medical Center, Omaha, NE 68198, USA;
| | - Adegboyega K. Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30318, USA; (S.T.); (B.W.)
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30318, USA
| | - Shafiq A. Khan
- Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA; (S.C.); (S.V.V.); (A.S.G.); (A.K.); (J.S.S.)
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27
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Owumi SE, Adedara IA, Akomolafe AP, Farombi EO, Oyelere AK. Gallic acid enhances reproductive function by modulating oxido-inflammatory and apoptosis mediators in rats exposed to aflatoxin-B1. Exp Biol Med (Maywood) 2020; 245:1016-1028. [PMID: 32558593 DOI: 10.1177/1535370220936206] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
IMPACT STATEMENT Infertility resulting from reproductive deficiency can be stressful. Exposure to aflatoxin B1, a dietary mycotoxin prevalent in improperly stored grains, is reported to elicit reproductive insufficiencies and infertility. We, therefore, examined the likely beneficial effect of gallic acid (GA) a phytochemical, recognized to exhibit in vitro and in vivo pharmacological bioactivities against oxidative stress and related inflammatory damages in rats, since AFB1 toxicities are predicated on oxidative epoxide formation, in a bid to proffer new evidence to advance the field of nutriceutical application from plant-derived chemopreventive agents. Our findings will advance the field of chemoprevention by presenting data absent in the literature on GA. Our results demonstrate further evidence for GA conferred protection against AFB1-mediated histological lesions in testes, epididymis, and hypothalamus of treated rats; suppresses oxidative damages, relieved inflammatory and apoptotic responses, restored sperm functional characteristics, and hormonal levels relevant for reproductive integrity and function.
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Affiliation(s)
- Solomon E Owumi
- Cancer Research and Molecular Biology Laboratory, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan 200004, Nigeria
| | - Isaac A Adedara
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan 200004, Nigeria
| | - Ayomide P Akomolafe
- Cancer Research and Molecular Biology Laboratory, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan 200004, Nigeria
| | - Ebenezer O Farombi
- Drug Metabolism and Toxicology Research Laboratories, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan 200004, Nigeria
| | - Adegboyega K Oyelere
- School of Chemistry & Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
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28
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Owumi S, Najophe ES, Farombi EO, Oyelere AK. Gallic acid protects against Aflatoxin B 1 -induced oxidative and inflammatory stress damage in rats kidneys and liver. J Food Biochem 2020; 44:e13316. [PMID: 32496616 DOI: 10.1111/jfbc.13316] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 04/24/2020] [Accepted: 05/09/2020] [Indexed: 12/31/2022]
Abstract
The adverse effect of Aflatoxin B1 (AFB1 ) exposure in both humans and rodents has been widely reported. The beneficial health effects of gallic acid (GA) against AFB1 -induced toxicity in vitro have been published. Here, we present in vivo findings on AFB1 and GA on hepatorenal function in rats, exposed to AFB1 (75 µg/kg body weight) only or co-treated with GA (20 or 40 mg/kg) for 28 successive days. AFB1 significantly increased pro-inflammatory biomarkers and suppressed IL-10 levels in rats' liver and kidney. AFB1 caused increased (p < .05) oxidative stress by decreasing antioxidant enzymes levels and increasing levels of reactive oxygen and nitrogen species. Furthermore, reduction (p < .05) in cellular glutathione (GSH) levels and increased (p < .05) hepatorenal markers of toxicity were detected in rats treated with AFB1 . These observed alterations were, however, reversed in GA co-treated rats. GA ameliorated AFB1 -induced hepatorenal dysfunction by decreasing oxidative stress and inflammation in rats. PRACTICAL APPLICATIONS: GA can chemoprotect against the damaging effects of toxins contaminating food. GA is widely distributed in plants and in use in industries as antioxidant, immune-regulator, and natural defense agent against infections when consumed. Here, we disclosed that GA ameliorates AFB1 -induced hepatorenal dysfunction by suppressing oxidative stress, inflammation, and enhanced apoptosis, thus improving hepatorenal functions in rats exposed to AFB1.
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Affiliation(s)
- Solomon Owumi
- Cancer Research and Molecular Biology Laboratories, Department of Biochemistry, University of Ibadan, Ibadan, Nigeria
| | - Eseroghene S Najophe
- Nutrition and Industrial Biochemistry Laboratories, Department of Biochemistry, University of Ibadan, Ibadan, Nigeria
| | - Ebenezer O Farombi
- Molecular Drug Metabolism and Toxicology Laboratories, Department of Biochemistry, University of Ibadan, Ibadan, Nigeria
| | - Adegboyega K Oyelere
- School of Biochemistry and Chemistry, Georgia Institute of Technology, Atlanta, GA, USA
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29
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Xu J, Jia YF, Tapadar S, Weaver JD, Raji IO, Pithadia DJ, Javeed N, García AJ, Choi DS, Matveyenko AV, Oyelere AK, Shin CH. Publisher Correction: Inhibition of TBK1/IKKε Promotes Regeneration of Pancreatic β-cells. Sci Rep 2019; 9:18570. [PMID: 31796771 PMCID: PMC6890676 DOI: 10.1038/s41598-019-54301-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
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Affiliation(s)
- Jin Xu
- School of Biological Sciences and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA.,Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Yun-Fang Jia
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Subhasish Tapadar
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Jessica D Weaver
- Woodruff School of Mechanical Engineering and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Idris O Raji
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Deeti J Pithadia
- School of Biological Sciences and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Naureen Javeed
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA
| | - Andrés J García
- Woodruff School of Mechanical Engineering and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Doo-Sup Choi
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Aleksey V Matveyenko
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Chong Hyun Shin
- School of Biological Sciences and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA. .,Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA.
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30
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Caggia S, Garrett AS, Kumar A, Tapadar S, Oyelere AK, Venugopal SV, Khan SA. Abstract 4596: Synthesis and biological evaluation of small molecules inhibitors targeting heterotrimeric Gαi2 protein. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-4596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Heterotrimeric G-proteins are ubiquitously expressed in cells, and they transduce signals from activated G-protein coupled receptors. It is well known that these proteins are differentially expressed in cancer, thereby activating signals that lead to different biological functions such as proliferation and cell motility. Previously, we have shown that Gαi2 protein is essential for cell migration and invasion in prostate cancer cell lines, and its action is downstream of PI3-kinase/Rac1 activation. We have also shown that in PC3 prostate cancer cells, pre-treated with Pertussis toxin (PTX), a well know inhibitor of Gαi/0, resulted in the attenuation of TGFβ1- and oxytocin-induced migration and PI3-kinase activation, without affecting EGF-induced PI3-kinase activation and cell migration. Here, we synthesized new small molecules inhibitors, GDIs, capable of preventing nucleotide exchange and subunit activation. Compounds #29 and #46 are analogs of the lead compound, lacking the thiophene OH-group and with a thiol- to N-methyl amino-group substitution, respectively. Compound #35, a methyl ether derivative of #46, is designed to test the effect of the modification to the phenolic group on Gαi2 inhibition activity. We pretreated PC3 cells with the small molecules and then stimulated with EGF and oxytocin to activate Gαi2 subunit. Immunoprecipitation of the active Gαi and western blot for Gαi2 showed a decrease in the amount of active Gαi2 that was pulled down compared with the controls. Using cell migration assay, we observed that #29 and #46, both at 10 μM, caused inhibition of migration in different prostate cancer cell lines in response to EGF treatments. In contrast, #35 is inactive in this assay at the same concentration. To determine if the effects of Gαi2 are the same in other cancer cells, we first knockdown Gαi2 protein expression in breast and ovarian cancer cells and performed migration assays. The knock-down of endogenous Gαi2 attenuated cell migration, compared to the control cells. We also performed migration assays in the same cells using compound #29 at 10 μM and observed significant inhibition of migratory behavior in response to EGF- and FBS stimuli compared to the controls. We conclude that the small molecules we used in this study may be considered as potential therapeutic tools, inhibiting the migratory capability of metastatic cells.
Citation Format: Silvia Caggia, Autumn S. Garrett, Aditi Kumar, Subhasish Tapadar, Adegboyega K. Oyelere, Smrruthi Vaidegi Venugopal, Shafiq A. Khan. Synthesis and biological evaluation of small molecules inhibitors targeting heterotrimeric Gαi2 protein [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 4596.
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Affiliation(s)
- Stephen N. Crooke
- School of Chemistry and Biochemistry, ∥School of Biological Sciences, and §Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Jiri Schimer
- School of Chemistry and Biochemistry, ∥School of Biological Sciences, and §Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Institute of Organic Chemistry and Biochemistry of the CAS, 16610 Prague, Czech Republic
| | - Idris Raji
- School of Chemistry and Biochemistry, ∥School of Biological Sciences, and §Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Bocheng Wu
- School of Chemistry and Biochemistry, ∥School of Biological Sciences, and §Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Adegboyega K. Oyelere
- School of Chemistry and Biochemistry, ∥School of Biological Sciences, and §Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - M. G. Finn
- School of Chemistry and Biochemistry, ∥School of Biological Sciences, and §Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Oyebode OT, Owumi SE, Oyelere AK, Olorunsogo OO. Calliandra portoricensis Benth exhibits anticancer effects via alteration of Bax/Bcl-2 ratio and growth arrest in prostate LNCaP cells. J Ethnopharmacol 2019; 233:64-72. [PMID: 30580026 DOI: 10.1016/j.jep.2018.12.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/04/2018] [Accepted: 12/12/2018] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Apoptosis is downregulated in all forms of cancers. The mitochondrion has been implicated in the apoptotic process and, recently has been targeted in cancer therapy because of its role in cancer progression. Medicinal plants are used in the treatment of cancer, in particular, Calliandra portoricensis (CP) in the management of prostate cancer in Nigeria ethnomedicine. AIM OF THE STUDY This study was designed to investigate the effects of CP on mitochondrial-mediated apoptosis and cell proliferation using prostate cancer cells. MATERIALS AND METHODS Prostatic LNCaP, DU-145, lung adenocarcinoma and healthy VERO cells were used to assess cell proliferation. Cell cycle analysis was evaluated by flow cytometry. Levels of pro-apoptotic Bax, anti-apoptotic Bcl-2, Cytochrome C Release (CCR) and activation of caspases 3(C3) and 9 (C9) were determined by ELISA, while mitochondrial integrity was evaluated by Fluorescent Intensity Ratio (FIR). RESULTS Methanol Fraction of C. portoricensis (MFCP) inhibited proliferation of prostatic LNCaP, DU-145, lung adenocarcinoma and healthy VERO cells with IC50 values of 2.4 ± 0.2, 3.3 ± 0.2, 3.6 ± 0.2 and 17.9 ± 1.6 µg/mL, respectively. The growth inhibition by MFCP correlated with a 3-fold decreased expression of Bcl-2 and a 4-fold increase in Bax levels at 10 µg/mL in LNCaP cells. Furthermore, MFCP caused a 3.5-fold reduction in FIR at 10 µg/mL and induced CCR by 4.2 folds at the same concentration relative to control. The MFCP-induced CCR is associated with activation of C3 and C9 at 10 µg/mL by 4.2 and 5.1 folds, respectively which prompted cancer cells to arrest at S phase. The LC-MS analysis revealed the presence of polyphenols including gallic acid and afzelechin in MFCP. CONCLUSION Taken together, MFCP- induced cell death is mediated by alteration of mitochondrial integrity and cell cycle arrest. Hence, methanol fraction of C. portoricensis may be effective for cancer pharmacotherapy.
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Affiliation(s)
- Olubukola T Oyebode
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria; School of Chemistry and Biochemistry, Parker H. Petit for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
| | - Solomon E Owumi
- Cancer Research and Molecular Biology Laboratory, Department of Biochemistry, University of Ibadan, Nigeria.
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Parker H. Petit for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
| | - Olufunso O Olorunsogo
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan, Nigeria.
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Khodaverdian V, Tapadar S, MacDonald IA, Xu Y, Ho PY, Bridges A, Rajpurohit P, Sanghani BA, Fan Y, Thangaraju M, Hathaway NA, Oyelere AK. Deferiprone: Pan-selective Histone Lysine Demethylase Inhibition Activity and Structure Activity Relationship Study. Sci Rep 2019; 9:4802. [PMID: 30886160 PMCID: PMC6423038 DOI: 10.1038/s41598-019-39214-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 12/17/2018] [Indexed: 11/09/2022] Open
Abstract
Deferiprone (DFP) is a hydroxypyridinone-derived iron chelator currently in clinical use for iron chelation therapy. DFP has also been known to elicit antiproliferative activities, yet the mechanism of this effect has remained elusive. We herein report that DFP chelates the Fe2+ ion at the active sites of selected iron-dependent histone lysine demethylases (KDMs), resulting in pan inhibition of a subfamily of KDMs. Specifically, DFP inhibits the demethylase activities of six KDMs - 2A, 2B, 5C, 6A, 7A and 7B - with low micromolar IC50s while considerably less active or inactive against eleven KDMs - 1A, 3A, 3B, 4A-E, 5A, 5B and 6B. The KDM that is most sensitive to DFP, KDM6A, has an IC50 that is between 7- and 70-fold lower than the iron binding equivalence concentrations at which DFP inhibits ribonucleotide reductase (RNR) activities and/or reduces the labile intracellular zinc ion pool. In breast cancer cell lines, DFP potently inhibits the demethylation of H3K4me3 and H3K27me3, two chromatin posttranslational marks that are subject to removal by several KDM subfamilies which are inhibited by DFP in cell-free assay. These data strongly suggest that DFP derives its anti-proliferative activity largely from the inhibition of a sub-set of KDMs. The docked poses adopted by DFP at the KDM active sites enabled identification of new DFP-based KDM inhibitors which are more cytotoxic to cancer cell lines. We also found that a cohort of these agents inhibited HP1-mediated gene silencing and one lead compound potently inhibited breast tumor growth in murine xenograft models. Overall, this study identified a new chemical scaffold capable of inhibiting KDM enzymes, globally changing histone modification profiles, and with specific anti-tumor activities.
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Affiliation(s)
- Verjine Khodaverdian
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Subhasish Tapadar
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Ian A MacDonald
- The University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, 27599, USA
| | - Yuan Xu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Po-Yi Ho
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Allison Bridges
- Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Pragya Rajpurohit
- Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Bhakti A Sanghani
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | - Yuhong Fan
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA
| | | | - Nathaniel A Hathaway
- The University of North Carolina Eshelman School of Pharmacy, Chapel Hill, NC, 27599, USA.
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA.
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332-0400, USA.
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Xu J, Jia YF, Tapadar S, Weaver JD, Raji IO, Pithadia DJ, Javeed N, García AJ, Choi DS, Matveyenko AV, Oyelere AK, Shin CH. Inhibition of TBK1/IKKε Promotes Regeneration of Pancreatic β-cells. Sci Rep 2018; 8:15587. [PMID: 30349097 PMCID: PMC6197228 DOI: 10.1038/s41598-018-33875-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 10/01/2018] [Indexed: 12/18/2022] Open
Abstract
β-cell proliferation induction is a promising therapeutic strategy to restore β-cell mass. By screening small molecules in a transgenic zebrafish model of type 1 diabetes, we identified inhibitors of non-canonical IκB kinases (IKKs), TANK-binding kinase 1 (TBK1) and IκB kinase ε (IKKε), as enhancers of β-cell regeneration. The most potent β-cell regeneration enhancer was a cinnamic acid derivative (E)-3-(3-phenylbenzo[c]isoxazol-5-yl)acrylic acid (PIAA), which, acting through the cAMP-dependent protein kinase A (PKA), stimulated β-cell-specific proliferation by increasing cyclic AMP (cAMP) levels and mechanistic target of rapamycin (mTOR) activity. A combination of PIAA and cilostamide, an inhibitor of β-cell-enriched cAMP hydrolyzing enzyme phosphodiesterase (PDE) 3, enhanced β-cell proliferation, whereas overexpression of PDE3 blunted the mitogenic effect of PIAA in zebrafish. PIAA augmented proliferation of INS-1β-cells and β-cells in mammalian islets including human islets with elevation in cAMP levels and insulin secretion. PIAA improved glycemic control in streptozotocin (STZ)-induced diabetic mice with increases in β-cell proliferation, β-cell area, and insulin content in the pancreas. Collectively, these data reveal an evolutionarily conserved and critical role of TBK1/IKKε suppression in expanding functional β-cell mass.
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Affiliation(s)
- Jin Xu
- School of Biological Sciences and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA.,Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, 91125, USA
| | - Yun-Fang Jia
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Subhasish Tapadar
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Jessica D Weaver
- Woodruff School of Mechanical Engineering and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Idris O Raji
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Deeti J Pithadia
- School of Biological Sciences and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Naureen Javeed
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA
| | - Andrés J García
- Woodruff School of Mechanical Engineering and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Doo-Sup Choi
- Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Aleksey V Matveyenko
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, 55905, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Chong Hyun Shin
- School of Biological Sciences and the Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA. .,Department of Molecular Pharmacology and Experimental Therapeutics, Mayo Clinic, Rochester, MN, 55905, USA.
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George A, Raji I, Cinar B, Kucuk O, Oyelere AK. Design, synthesis, and evaluation of the antiproliferative activity of hydantoin-derived antiandrogen-genistein conjugates. Bioorg Med Chem 2018; 26:1481-1487. [PMID: 29456113 PMCID: PMC5891370 DOI: 10.1016/j.bmc.2018.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/04/2018] [Accepted: 01/12/2018] [Indexed: 11/16/2022]
Abstract
Androgen receptor (AR) signaling is vital to the viability of all forms of prostate cancer (PCa). With the goal of investigating the effect of simultaneous inhibition and depletion of AR on viability of PCa cells, we designed, synthesized and characterized the bioactivities of bifunctional agents which incorporate the independent cancer killing properties of an antiandrogen and genistein, and the AR downregulation effect of genistein within a single molecular template. We observed that a representative conjugate, 9b, is much more cytotoxic to both LNCaP and DU145 cells relative to the antiandrogen and genistein building blocks as single agents or their combination. Moreover, conjugate 9b more effectively down regulates cellular AR protein levels relative to genistein and induces S phase cell cycle arrest. The promising bioactivities of these conjugates warrant further investigation.
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Affiliation(s)
- Alex George
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Idris Raji
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Bekir Cinar
- Department of Biological Sciences, The Center for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, GA 30314, USA
| | - Omer Kucuk
- Winship Cancer Institute of Emory University, Atlanta, GA 30322, USA.
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA; Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
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Pavlova A, Parks JM, Oyelere AK, Gumbart JC. Toward the rational design of macrolide antibiotics to combat resistance. Chem Biol Drug Des 2017; 90:641-652. [DOI: 10.1111/cbdd.13004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 04/03/2017] [Accepted: 04/08/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Anna Pavlova
- School of Physics Georgia Institute of Technology Atlanta GA USA
| | - Jerry M. Parks
- Biosciences Division Oak Ridge National Laboratory Oak Ridge TN USA
| | - Adegboyega K. Oyelere
- School of Chemistry and Biochemistry Parker H. Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology Atlanta GA USA
| | - James C. Gumbart
- School of Physics Georgia Institute of Technology Atlanta GA USA
- School of Chemistry and Biochemistry Parker H. Petit Institute for Bioengineering and Bioscience Georgia Institute of Technology Atlanta GA USA
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Degtyareva NN, Gong C, Story S, Levinson NS, Oyelere AK, Green KD, Garneau-Tsodikova S, Arya DP. Antimicrobial Activity, AME Resistance, and A-Site Binding Studies of Anthraquinone-Neomycin Conjugates. ACS Infect Dis 2017; 3:206-215. [PMID: 28103015 DOI: 10.1021/acsinfecdis.6b00176] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The antibacterial effects of aminoglycosides are based on their association with the A-site of bacterial rRNA and interference with the translational process in the bacterial cell, causing cell death. The clinical use of aminoglycosides is complicated by resistance and side effects, some of which arise from their interactions with the human mitochondrial 12S rRNA and its deafness-associated mutations, C1494U and A1555G. We report a rapid assay that allows screening of aminoglycoside compounds to these classes of rRNAs. These screening tools are important to find antibiotics that selectively bind to the bacterial A-site rather than human, mitochondrial A-sites and its mutant homologues. Herein, we report our preliminary work on the optimization of this screen using 12 anthraquinone-neomycin (AMA-NEO) conjugates against molecular constructs representing five A-site homologues, Escherichia coli, human cytosolic, mitochondrial, C1494U, and A1555G, using a fluorescent displacement screening assay. These conjugates were also tested for inhibition of protein synthesis, antibacterial activity against 14 clinically relevant bacterial strains, and the effect on enzymes that inactivate aminoglycosides. The AMA-NEO conjugates demonstrated significantly improved resistance against aminoglycoside-modifying enzymes (AMEs), as compared with NEO. Several compounds exhibited significantly greater inhibition of prokaryotic protein synthesis as compared to NEO and were extremely poor inhibitors of eukaryotic translation. There was significant variation in antibacterial activity and MIC of selected compounds between bacterial strains, with Escherichia coli, Enteroccocus faecalis, Citrobacter freundii, Shigella flexneri, Serratia marcescens, Proteus mirabilis, Enterobacter cloacae, Staphylococcus epidermidis, and Listeria monocytogenes exhibiting moderate to high sensitivity (50-100% growth inhibition) whereas Acinetobacter baumannii, Pseudomonas aeruginosa, Klebsiellla pneumoniae, and MRSA strains expressed low sensitivity, as compared to the parent aminoglycoside NEO.
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Affiliation(s)
| | - Changjun Gong
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Sandra Story
- NUBAD, LLC, Greenville, South Carolina 29605, United States
| | - Nathanael S. Levinson
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Adegboyega K. Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Keith D. Green
- College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536-0596, United States
| | | | - Dev P. Arya
- NUBAD, LLC, Greenville, South Carolina 29605, United States
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
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Pavlova A, Parks JM, Oyelere AK, Gumbart JC. Towards a Rational Design of Macrolide Antibiotics in Order to Combat Bacterial Resistance. Biophys J 2017. [DOI: 10.1016/j.bpj.2016.11.1749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Raji I, Yadudu F, Janeira E, Fathi S, Szymczak L, Kornacki JR, Komatsu K, Li JD, Mrksich M, Oyelere AK. Bifunctional conjugates with potent inhibitory activity towards cyclooxygenase and histone deacetylase. Bioorg Med Chem 2017; 25:1202-1218. [PMID: 28057407 PMCID: PMC5291751 DOI: 10.1016/j.bmc.2016.12.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/17/2016] [Accepted: 12/20/2016] [Indexed: 12/16/2022]
Abstract
We herein disclose a series of compounds with potent inhibitory activities towards histone deacetylases (HDAC) and cyclooxygenases (COX). These compounds potently inhibited the growth of cancer cell lines consistent with their anti-COX and anti-HDAC activities. While compound 2b showed comparable level of COX-2 selectivity as celecoxib, compound 11b outperformed indomethacin in terms of selectivity towards COX-2 relative to COX-1. An important observation with our lead compounds (2b, 8, 11b, and 17b) is their enhanced cytotoxicity towards androgen dependent prostate cancer cell line (LNCaP) relative to androgen independent prostate cancer cell line (DU-145). Interestingly, compounds 2b and 17b arrested the cell cycle progression of LNCaP in the S-phase, while compound 8 showed a G0/G1 arrest, similar to SAHA. Relative to SAHA, these compounds displayed tumor-selective cytotoxicity as they have low anti-proliferative activity towards healthy cells (VERO); an attribute that makes them attractive candidates for drug development.
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Affiliation(s)
- Idris Raji
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Fatima Yadudu
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Emily Janeira
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA
| | - Shaghayegh Fathi
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Lindsey Szymczak
- Departments of Chemistry and Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - James Richard Kornacki
- Departments of Chemistry and Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Kensei Komatsu
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, USA
| | - Jian-Dong Li
- Center for Inflammation, Immunity & Infection, Institute for Biomedical Sciences, Georgia State University, USA
| | - Milan Mrksich
- Departments of Chemistry and Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA; Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
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Raji I, Ahluwalia K, Oyelere AK. Design, synthesis and evaluation of antiproliferative activity of melanoma-targeted histone deacetylase inhibitors. Bioorg Med Chem Lett 2017; 27:744-749. [PMID: 28131715 DOI: 10.1016/j.bmcl.2017.01.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 01/13/2017] [Indexed: 10/20/2022]
Abstract
The clinical validation of histone deacetylase inhibition as a cancer therapeutic modality has stimulated interest in the development of new generation of potent and tumor selective histone deacetylase inhibitors (HDACi). With the goal of selective delivery of the HDACi to melanoma cells, we incorporated the benzamide, a high affinity melanin-binding template, into the design of HDACi to generate a new series of compounds 10a-b and 11a-b which display high potency towards HDAC1 and HDAC6. However, these compounds have attenuated antiproliferative activities relative to the untargeted HDACi. An alternative strategy furnished compound 14, a prodrug bearing the benzamide template linked via a labile bond to a hydroxamate-based HDACi. This pro-drug compound showed promising antiproliferative activity and warrant further study.
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Affiliation(s)
- Idris Raji
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Kabir Ahluwalia
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA; Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
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Raji IO, George A, Kucuk O, Oyelere AK. Abstract 1360: Genistein-AR antagonist conjugate potently induce growth arrest in both androgen dependent and independent prostate cancer cell lines. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-1360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The ability of prostate cancer to transition from androgen dependent- to androgen independent state (castration resistant), during androgen deprivation therapy, requires that new chemotherapeutic agents be introduced that will retain activity in the two prostate cancer types. Though described as androgen independent, castration resistant prostate cancer (CRPC) still relies heavily on androgen receptor (AR) signaling for survival. Enzalutamide, an AR antagonist, is probably that most effective drug used in androgen deprivation therapy for CRPC and AR dependent prostate cancer. Despite its clinical success, there is the fear of resistant to enzalutamide due to mutation in the ligand binding domain of AR. This poses a challenge that requires developing new agents devoid of resistance, in the event of mutation. One of the approaches being proposed is to develop new agents that can selectively induce AR degradation, an approach that was successfully used to develop the selective estrogen receptor degrader, fulvestrant.
In our study, we incorporate genistein, a soy isoflavone known to perturb multiple biochemical pathways relevant for cancer survival, into an AR binding template to give AG-1-33. AG-1-33 was evaluated for growth inhibitory activity in LNCaP (AR dependent) and DU-145 (AR independent) prostate cancer cell lines. This compound retained its AR antagonist activity and also showed low micromolar anti-proliferation activity in the two prostate cancer cell lines. We also evaluated the effect of AG-1-33 on AR expression, as well as its ability to act as a selective AR degrader in LNCaP.
Citation Format: Idris O. Raji, Alex George, Omer Kucuk, Adegboyega K. Oyelere. Genistein-AR antagonist conjugate potently induce growth arrest in both androgen dependent and independent prostate cancer cell lines. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 1360.
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Affiliation(s)
| | - Alex George
- 1Georgia Institute of Technology, Atlanta, GA
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Tapadar S, Fathi S, Raji I, Omesiete W, Kornacki JR, Mwakwari SC, Miyata M, Mitsutake K, Li JD, Mrksich M, Oyelere AK. A structure-activity relationship of non-peptide macrocyclic histone deacetylase inhibitors and their anti-proliferative and anti-inflammatory activities. Bioorg Med Chem 2015; 23:7543-64. [PMID: 26585275 DOI: 10.1016/j.bmc.2015.10.045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/21/2015] [Accepted: 10/31/2015] [Indexed: 10/22/2022]
Abstract
Inhibition of the enzymatic activity of histone deacetylase (HDAC) is a promising therapeutic strategy for cancer treatment and several distinct small molecule histone deacetylase inhibitors (HDACi) have been reported. We have previously identified a new class of non-peptide macrocyclic HDACi derived from 14- and 15-membered macrolide skeletons. In these HDACi, the macrocyclic ring is linked to the zinc chelating hydroxamate moiety through a para-substituted aryl-triazole cap group. To further delineate the depth of the SAR of this class of HDACi, we have synthesized series of analogous compounds and investigated the influence of various substitution patterns on their HDAC inhibitory, anti-proliferative and anti-inflammatory activities. We identified compounds 25b and 38f with robust anti-proliferative activities and compound 26f (IC50 47.2 nM) with superior anti-inflammatory (IC50 88 nM) activity relative to SAHA.
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Affiliation(s)
- Subhasish Tapadar
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Shaghayegh Fathi
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Idris Raji
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Wilson Omesiete
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - James R Kornacki
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA; Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Sandra C Mwakwari
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Masanori Miyata
- Center for Inflammation, Immunity and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
| | - Kazunori Mitsutake
- Center for Inflammation, Immunity and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
| | - Jian-Dong Li
- Center for Inflammation, Immunity and Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, GA 30303, USA
| | - Milan Mrksich
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA; Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
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Owumi SE, Oyelere AK. Determination of metal ion contents of two antiemetic clays use in Geophagy. Toxicol Rep 2015; 2:928-932. [PMID: 28962431 PMCID: PMC5598538 DOI: 10.1016/j.toxrep.2015.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/02/2015] [Accepted: 06/12/2015] [Indexed: 12/29/2022] Open
Abstract
Nausea is usually associated with early to late stages of pregnancy. Geophagy-deliberate consumption of soil is a common method of managing gravidae-induced discomfort. To control nausea, pregnant women in Nigeria commonly eat baked clay called "Eko" and another type of clay that induces buccal constriction called "Omumu". The metal contents in Eko and Omumu, digested under different pH conditions (acidic, alkaline and neutral), were investigated using Inductively Coupled Plasma Optical Emission Spectroscopy (ICPS-OES). We identified and quantitate the elements present and speculate on their potential impact on maternal and fetal health upon gestational exposure beyond the acceptable exposure levels and the Millennium Contaminant Level Goals (MCLG) set by the United States Environmental Protection Agency (USEPA). Specifically, our result indicates unacceptably high levels of aluminum in Eko and Omumu (>10-fold greater than the highest desirable levels set by the USEPA). The aluminum concentrations were influenced by the pH condition in which the samples were digested. Dietary exposure to aluminum at such high levels may be deleterious to maternal health and fetal development. Therefore consumption of Eko and Omumu as an antidote to reduce nausea during pregnancy should be discouraged. Future studies are planned to investigate specific impacts on fetal and maternal health and likely teratogenicity in rodent models.
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Affiliation(s)
| | - Adegboyega K. Oyelere
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
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Jiang L, Watkins D, Jin Y, Gong C, King A, Washington AZ, Green KD, Garneau-Tsodikova S, Oyelere AK, Arya DP. Rapid synthesis, RNA binding, and antibacterial screening of a peptidic-aminosugar (PA) library. ACS Chem Biol 2015; 10:1278-89. [PMID: 25706406 DOI: 10.1021/cb5010367] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A 215-member mono- and diamino acid peptidic-aminosugar (PA) library, with neomycin as the model aminosugar, was systematically and rapidly synthesized via solid phase synthesis. Antibacterial activities of the PA library, on 13 bacterial strains (seven Gram-positive and six Gram-negative bacterial strains), and binding affinities of the PA library for a 27-base model of the bacterial 16S ribosomal A-site RNA were evaluated using high-throughput screening. The results of the two assays were correlated using Ribosomal Binding-Bacterial Inhibition Plot (RB-BIP) analysis to provide structure-activity relationship (SAR) information. From this work, we have identified PAs that can discriminate the E. coli A-site from the human A-site by up to a 28-fold difference in binding affinity. Aminoglycoside-modifying enzyme activity studies indicate that APH(2″)-Ia showed nearly complete removal of activity with a number of PAs. The synthesis of the compound library and screening can both be performed rapidly, allowing for an iterative process of aminoglycoside synthesis and screening of PA libraries for optimal binding and antibacterial activity for lead identification.
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Affiliation(s)
- Liuwei Jiang
- Laboratory
of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | | | - Yi Jin
- Laboratory
of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Changjun Gong
- Laboratory
of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
| | - Ada King
- NUBAD, LLC, Greenville, South Carolina 29605, United States
| | - Arren Z. Washington
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Keith D. Green
- College
of Pharmacy, Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky 40536-0596, United States
| | - Sylvie Garneau-Tsodikova
- College
of Pharmacy, Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky 40536-0596, United States
| | - Adegboyega K. Oyelere
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Dev P. Arya
- Laboratory
of Medicinal Chemistry, Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
- NUBAD, LLC, Greenville, South Carolina 29605, United States
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Washington AZ, Tapadar S, George A, Oyelere AK. Exploiting translational stalling peptides in an effort to extend azithromycin interaction within the prokaryotic ribosome nascent peptide exit tunnel. Bioorg Med Chem 2015; 23:5198-209. [PMID: 26037612 DOI: 10.1016/j.bmc.2015.04.078] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Revised: 04/18/2015] [Accepted: 04/29/2015] [Indexed: 10/23/2022]
Abstract
The ribosome is the primary protein synthesis machine in the cell and is a target for treatment of a variety of diseases including bacterial infection and cancer. The ribosomal peptide exit tunnel, the route of egress for the nascent peptide, is an inviting site for drug design. Toward a rational engagement of the nascent peptide components for the design of small molecule inhibitors of ribosome function, we designed and disclosed herein a set of N-10 indole functionalized azithromycin analogs. The indole moiety of these compounds is designed to mimic the translation stalling interaction of SecM W155 side-chain with the prokaryotic (Escherichia coli) ribosome A751 residue. Many of these N-10 functionalized compounds have enhanced translation inhibition activities against E. coli ribosome relative to azithromycin while a subset inhibited the growth of representative susceptible bacteria strains to about the same extent as azithromycin. Moreover, the inclusion of bovine serum in the bacterial growth media enhanced the anti-bacterial potency of the N-10 functionalized azithromycin analogs by as high as 10-fold.
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Affiliation(s)
- Arren Z Washington
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Subhasish Tapadar
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Alex George
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA
| | - Adegboyega K Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA; Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400, USA.
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Washington AZ, Benicewicz DB, Canzoneri JC, Fagan CE, Mwakwari SC, Maehigashi T, Dunham CM, Oyelere AK. Macrolide-peptide conjugates as probes of the path of travel of the nascent peptides through the ribosome. ACS Chem Biol 2014; 9:2621-31. [PMID: 25198768 PMCID: PMC4245169 DOI: 10.1021/cb5003224] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Despite
decades of research on the bacterial ribosome, the ribosomal
exit tunnel is still poorly understood. Although it has been suggested
that the exit tunnel is simply a convenient route of egress for the
nascent chain, specific protein sequences serve to slow the rate of
translation, suggesting some degree of interaction between the nascent
peptide chain and the exit tunnel. To understand how the ribosome
interacts with nascent peptide sequences, we synthesized and characterized
a novel class of probe molecules. These peptide–macrolide (or
“peptolide”) conjugates were designed to present unique
peptide sequences to the exit tunnel. Biochemical and X-ray structural
analyses of the interactions between these probes and the ribosome
reveal interesting insights about the exit tunnel. Using translation
inhibition and RNA structure probing assays, we find the exit tunnel
has a relaxed preference for the directionality (N → C or C
→ N orientation) of the nascent peptides. Moreover, the X-ray
crystal structure of one peptolide derived from a positively charged,
reverse Nuclear Localization Sequence peptide, bound to the 70S bacterial
ribosome, reveals that the macrolide ring of the peptolide binds in
the same position as other macrolides. However, the peptide tail folds
over the macrolide ring, oriented toward the peptidyl transferase
center and interacting in a novel manner with 23S rRNA residue C2442
and His69 of ribosomal protein L4. These data suggest that these peptolides
are viable probes for interrogating nascent peptide–exit tunnel
interaction.
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Affiliation(s)
- Arren Z. Washington
- School
of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering
and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Derek B. Benicewicz
- School
of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering
and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Joshua C. Canzoneri
- School
of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering
and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Crystal E. Fagan
- Department
of Biochemistry, Emory University School of Medicine, Atlanta, Georgia 30322, United States
| | - Sandra C. Mwakwari
- School
of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering
and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - Tatsuya Maehigashi
- Department
of Biochemistry, Emory University School of Medicine, Atlanta, Georgia 30322, United States
| | - Christine M. Dunham
- Department
of Biochemistry, Emory University School of Medicine, Atlanta, Georgia 30322, United States
| | - Adegboyega K. Oyelere
- School
of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering
and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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Dreaden EC, Raji IO, Austin LA, Fathi S, Mwakwari SC, Humphries WH, Kang B, Oyelere AK, El-Sayed MA. P-glycoprotein-dependent trafficking of nanoparticle-drug conjugates. Small 2014; 10:1719-23. [PMID: 24616407 PMCID: PMC4136971 DOI: 10.1002/smll.201303190] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 12/17/2013] [Indexed: 06/03/2023]
Affiliation(s)
- Erik C. Dreaden
- Laser Dynamics Laboratory Department of Chemistry and Biochemistry Georgia
Institute of Technology 901 Atlantic Drive NW, Atlanta, GA 30332–0400, USA
| | - Idris O. Raji
- Petit Institute for Bioengineering and Biosciences Department of Chemistry
and Biochemistry Georgia Institute of Technology 315 Ferst Drive NW, Atlanta, GA
30332–0230, USA
| | - Lauren A. Austin
- Laser Dynamics Laboratory Department of Chemistry and Biochemistry Georgia
Institute of Technology 901 Atlantic Drive NW, Atlanta, GA 30332–0400, USA
| | - Shaghayegh Fathi
- Petit Institute for Bioengineering and Biosciences Department of Chemistry
and Biochemistry Georgia Institute of Technology 315 Ferst Drive NW, Atlanta, GA
30332–0230, USA
| | - Sandra C. Mwakwari
- Petit Institute for Bioengineering and Biosciences Department of Chemistry
and Biochemistry Georgia Institute of Technology 315 Ferst Drive NW, Atlanta, GA
30332–0230, USA
| | - William H. Humphries
- Petit Institute for Bioengineering and Biosciences Department of Chemistry
and Biochemistry Georgia Institute of Technology 315 Ferst Drive NW, Atlanta, GA
30332–0230, USA
| | - Bin Kang
- Laser Dynamics Laboratory Department of Chemistry and Biochemistry Georgia
Institute of Technology 901 Atlantic Drive NW, Atlanta, GA 30332–0400, USA
| | - Adegboyega K. Oyelere
- Petit Institute for Bioengineering and Biosciences Department of Chemistry
and Biochemistry Georgia Institute of Technology 315 Ferst Drive NW, Atlanta, GA
30332–0230, USA
| | - Mostafa A. El-Sayed
- Laser Dynamics Laboratory Department of Chemistry and Biochemistry Georgia
Institute of Technology 901 Atlantic Drive NW, Atlanta, GA 30332–0400, USA
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Sodji QH, Patil V, Kornacki JR, Mrksich M, Oyelere AK. Synthesis and structure-activity relationship of 3-hydroxypyridine-2-thione-based histone deacetylase inhibitors. J Med Chem 2013; 56:9969-81. [PMID: 24304348 PMCID: PMC4029159 DOI: 10.1021/jm401225q] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We previously identified 3-hydroxypyridine-2-thione (3HPT) as a novel zinc binding group for histone deacetylase (HDAC) inhibition. Early structure-activity relationship (SAR) studies led to various small molecules possessing selective inhibitory activity against HDAC6 or HDAC8 but devoid of HDAC1 inhibition. To delineate further the depth of the SAR of 3HPT-derived HDAC inhibitors (HDACi), we have extended the SAR studies to include the linker region and the surface recognition group to optimize the HDAC inhibition. The current efforts resulted in the identification of two lead compounds, 10d and 14e, with potent HDAC6 and HDAC8 activities that are inactive against HDAC1. These new HDACi possess anticancer activities against various cancer cell lines including Jurkat J.γ1 for which SAHA and the previously disclosed 3HPT-derived HDACi were inactive.
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Affiliation(s)
- Quaovi H. Sodji
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400 USA
| | - Vishal Patil
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400 USA
| | - James R. Kornacki
- Departments of Chemistry and Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113
| | - Milan Mrksich
- Departments of Chemistry and Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113
| | - Adegboyega K. Oyelere
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332-0400 USA
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0400 USA
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Gryder BE, Akbashev MJ, Rood MK, Raftery ED, Meyers WM, Dillard P, Khan S, Oyelere AK. Selectively targeting prostate cancer with antiandrogen equipped histone deacetylase inhibitors. ACS Chem Biol 2013; 8:2550-60. [PMID: 24004176 DOI: 10.1021/cb400542w] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Diverse cellular processes relevant to cancer progression are regulated by the acetylation status of proteins. Among such processes is chromatin remodeling via histone proteins, controlled by opposing histone deacetylase (HDAC) and histone acetyltransferase (HAT) enzymes. Histone deacetylase inhibitors (HDACi) show great promise in preclinical cancer models, but clinical trials treating solid tumors have failed to improve patient survival. This is due in part to an inability of HDACi to effectively accumulate in cancerous cells. To address this problem we designed HDACi with secondary pharmacophores to facilitate selective accumulation in malignant cells. We present the first example of HDACi compounds targeted to prostate tumors by equipping them with the additional ability to bind the androgen receptor (AR) with nonsteroidal antiandrogen moieties. Leads among these new dual-acting molecules bind to the AR and halt AR transcriptional activity at lower concentrations than clinical antiandrogens. They inhibit key isoforms of HDAC with low nanomolar potency. Fluorescent microscopy reveals varying degrees of AR nuclear localization in response to these compounds that correlates with their HDAC activity. These biological properties translate into potent anticancer activity against hormone-dependent (AR+) LNCaP and to a lesser extent against hormone-independent (AR-) DU145 prostate cancer, while having greatly reduced toxicity in noncancerous cells. This illustrates that engaging multiple biological targets with a single chemical probe can achieve both potent and cell-type-selective responses.
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Affiliation(s)
- Berkley E. Gryder
- Parker H. Petit Institute for Bioengineering & Biosciences, Department of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, Georgia 30332-0230, United States
| | - Michelle J. Akbashev
- Parker H. Petit Institute for Bioengineering & Biosciences, Department of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, Georgia 30332-0230, United States
| | - Michael K. Rood
- Parker H. Petit Institute for Bioengineering & Biosciences, Department of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, Georgia 30332-0230, United States
| | - Eric D. Raftery
- Parker H. Petit Institute for Bioengineering & Biosciences, Department of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, Georgia 30332-0230, United States
| | - Warren M. Meyers
- Department of Cellular
and Physiological Sciences, Life Sciences Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3
| | - Paulette Dillard
- Center
for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, Georgia 30314, United States
| | - Shafiq Khan
- Center
for Cancer Research and Therapeutic Development, Clark Atlanta University, Atlanta, Georgia 30314, United States
| | - Adegboyega K. Oyelere
- Parker H. Petit Institute for Bioengineering & Biosciences, Department of Chemistry and Biochemistry, Georgia Institute of Technology, 315 Ferst Dr. NW, Atlanta, Georgia 30332-0230, United States
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Gryder BE, Rood MK, Johnson KA, Patil V, Raftery ED, Yao LPD, Rice M, Azizi B, Doyle DF, Oyelere AK. Histone deacetylase inhibitors equipped with estrogen receptor modulation activity. J Med Chem 2013; 56:5782-96. [PMID: 23786452 DOI: 10.1021/jm400467w] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We describe a set of novel histone deacetylase inhibitors (HDACi) equipped with either an antagonist or an agonist of the estrogen receptor (ER) to confer selective activity against breast cancers. These bifunctional compounds potently inhibit HDAC at nanomolar concentrations and either agonize or antagonize ERα and ERβ. The ER antagonist activities of tamoxifen-HDACi conjugates (Tam-HDACi) are nearly identical to those of tamoxifen. Conversely, ethynyl-estradiol-HDACi conjugates (EED-HDACi) have attenuated ER agonist activities relative to the parent ethynyl-estradiol. In silico docking analysis provides structural basis for the trends of ER agonism/antagonism and ER subtype selectivity. Excitingly, lead Tam-HDACi conjugates show anticancer activity that is selectively more potent against MCF-7 (ERα positive breast cancer) compared to MDA-MB-231 (triple negative breast cancer), DU145 (prostate cancer), or Vero (noncancerous cell line). This dual-targeting approach illustrates the utility of designing small molecules with an emphasis on cell-type selectivity, not merely improved potency, working toward a higher therapeutic index at the earliest stages of drug development.
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Affiliation(s)
- Berkley E Gryder
- School of Chemistry and Biochemistry, Parker H. Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology , Atlanta, Georgia, 30332-0400, United States
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