1
|
Grams RJ, Santos WL, Scorei IR, Abad-García A, Rosenblum CA, Bita A, Cerecetto H, Viñas C, Soriano-Ursúa MA. The Rise of Boron-Containing Compounds: Advancements in Synthesis, Medicinal Chemistry, and Emerging Pharmacology. Chem Rev 2024; 124:2441-2511. [PMID: 38382032 DOI: 10.1021/acs.chemrev.3c00663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Boron-containing compounds (BCC) have emerged as important pharmacophores. To date, five BCC drugs (including boronic acids and boroles) have been approved by the FDA for the treatment of cancer, infections, and atopic dermatitis, while some natural BCC are included in dietary supplements. Boron's Lewis acidity facilitates a mechanism of action via formation of reversible covalent bonds within the active site of target proteins. Boron has also been employed in the development of fluorophores, such as BODIPY for imaging, and in carboranes that are potential neutron capture therapy agents as well as novel agents in diagnostics and therapy. The utility of natural and synthetic BCC has become multifaceted, and the breadth of their applications continues to expand. This review covers the many uses and targets of boron in medicinal chemistry.
Collapse
Affiliation(s)
- R Justin Grams
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Webster L Santos
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | | | - Antonio Abad-García
- Academia de Fisiología y Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, 11340 Mexico City, Mexico
| | - Carol Ann Rosenblum
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Andrei Bita
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Hugo Cerecetto
- Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Mataojo 2055, 11400 Montevideo, Uruguay
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Marvin A Soriano-Ursúa
- Academia de Fisiología y Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, 11340 Mexico City, Mexico
| |
Collapse
|
2
|
Paties Montagner G, Dominici S, Piaggi S, Pompella A, Corti A. Redox Mechanisms Underlying the Cytostatic Effects of Boric Acid on Cancer Cells-An Issue Still Open. Antioxidants (Basel) 2023; 12:1302. [PMID: 37372032 DOI: 10.3390/antiox12061302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/05/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Boric acid (BA) is the dominant form of boron in plasma, playing a role in different physiological mechanisms such as cell replication. Toxic effects have been reported, both for high doses of boron and its deficiency. Contrasting results were, however, reported about the cytotoxicity of pharmacological BA concentrations on cancer cells. The aim of this review is to briefly summarize the main findings in the field ranging from the proposed mechanisms of BA uptake and actions to its effects on cancer cells.
Collapse
Affiliation(s)
- Giulia Paties Montagner
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| | - Silvia Dominici
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| | - Simona Piaggi
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| | - Alfonso Pompella
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| | - Alessandro Corti
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| |
Collapse
|
3
|
Hirsh SP, Pons M, Joyal SV, Swick AG. Self-Assessed Benefits of a Prostate Health Formulation on Nocturia in Healthy Males With Mild Lower Urinary Tract Symptoms: An Open Label Study. Glob Adv Health Med 2020; 9:2164956120973639. [PMID: 33294303 PMCID: PMC7705803 DOI: 10.1177/2164956120973639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 09/30/2020] [Accepted: 10/13/2020] [Indexed: 11/15/2022] Open
Abstract
Background Nocturia is the most bothersome lower urinary tract symptoms (LUTS) and can significantly reduce men's quality of life. It is often poorly managed with conventional treatments. Objective The purpose of this study was to evaluate the self-assessed benefits of a prostate health dietary combination formulation on mild LUTS, especially nocturia in healthy males. Methods In an open label clinical study, thirty healthy male subjects with mild LUTS took one daily capsule of the product for 60 days. The primary outcome was self-assessed severity of LUTS using the International Prostate Symptoms Score (IPSS) questionnaire at Day 1 (baseline), Day 30 and Day 60. Safety and compliance were also evaluated. Results At Day 60, IPSS significantly decreased from baseline by 16.3% (3.6 ± 2.1 vs. 4.3 ± 1.5, p < 0.05). Although the reduction in IPSS did not reach statistical significance at Day 30, it was mostly driven by a 30.7% decrease (p < 0.05) in the nocturia sub-score compared with baseline. While 37% of subjects reported at baseline waking up 2‒3 times/night to void, none did so after taking the study product for 60 days. Compliance was very high throughout the study. No adverse events related to the study product were reported. Conclusions The study product might be a safe alternative for individuals willing to explore a non-conventional approach to manage their nocturia. A larger randomized placebo-controlled clinical trial is warranted to confirm these results. Clinical trial registry: Clinical Trials.gov. Registration number (September 1st, 2016): NCT02886832.
Collapse
Affiliation(s)
- Steven P Hirsh
- Life Extension Clinical Research, Inc., Fort Lauderdale, Florida
| | - Marianne Pons
- Life Extension, Inc., Fort Lauderdale, Florida
- Marianne Pons, Life Extension, Inc., 3600 West Commercial Boulevard, Fort Lauderdale, FL 33309, USA.
| | | | | |
Collapse
|
4
|
Ayhanci A, Tanriverdi DT, Sahinturk V, Cengiz M, Appak-Baskoy S, Sahin IK. Protective Effects of Boron on Cyclophosphamide-Induced Bladder Damage and Oxidative Stress in Rats. Biol Trace Elem Res 2020; 197:184-191. [PMID: 31734911 DOI: 10.1007/s12011-019-01969-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 10/30/2019] [Indexed: 12/20/2022]
Abstract
This study aims to investigate protective effects of boron against cyclophosphamide-induced bladder toxicity that produces oxidative stress and leads to apoptosis of the cells. In total, 24 rats were divided into 4 equal groups. The control group received saline. The 2nd experimental group received 200 mg kg of cyclophosphamide i.p. on the 4th day while the 3rd group was given only boron (200 mg kg, i.p.) for 6 days. In the 4th group, boron was given for 6 days and cyclophosphamide (200 mg kg, i.p.) was administrated on the 4th day. Twenty-four hours after the last boron or cyclophosphamide administration, rats were sacrificed under anesthesia. Bladder tissues of rats were taken for histological and immunohistochemical (apoptotic markers such as caspase-3, bcl-2, and bax) and blood was taken for the biochemical (serum total thiol, serum natural thiol, serum thiol-disulfide) analysis. Transient epithelial thinning, edema, marked inflammatory reaction, and bleeding were observed in bladders of the group that received cyclophosphamide. Also, the activity of bax and caspase-3-positive cells increased while the number of bcl-2-positive cells decreased. In the same group, serum natural thiol and total thiol levels decreased while serum disulfide levels increased, which indicates oxidative stress. On the other hand, in the boron+cyclophosphamide group pretreatment with boron protected, the bladder tissue and the number of bcl-2-positive cells increased, and bax and caspase-3-positive cells decreased, showing antiapoptotic effects of boron against cyclophosphamide-induced toxicity. In parallel with the findings of this group, native thiol and total thiol levels increased and serum disulfide levels decreased pointing out to a decreased oxidative stress. Our results indicate that boron pretreatment significantly protects rat bladder against cyclophosphamide-induced bladder damage due to its antiapoptotic and antioxidant properties.
Collapse
Affiliation(s)
- Adnan Ayhanci
- Faculty of Arts and Science, Department of Biology, Eskişehir Osmangazi University, 26480, Eskişehir, Turkey.
| | - Dondu Tugce Tanriverdi
- Faculty of Arts and Science, Department of Biology, Eskişehir Osmangazi University, 26480, Eskişehir, Turkey
| | - Varol Sahinturk
- Faculty of Medicine, Department of Histology and Embryology, Eskişehir Osmangazi University, 26480, Eskişehir, Turkey
| | - Mustafa Cengiz
- Department of Elementary Education, Faculty of Education, Siirt University, Siirt, Turkey
| | | | | |
Collapse
|
5
|
Affiliation(s)
- Yanyan Liu
- Department of Materials ScienceFudan University Shanghai P. R. China
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesCollege of Chemistry and Molecular EngineeringEast China Normal University Shanghai P. R. China
| | - Meng Zhang
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructuresShanghai Institute of CeramicsChinese Academy of Sciences Shanghai P. R. China
| | - Wenbo Bu
- Department of Materials ScienceFudan University Shanghai P. R. China
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesCollege of Chemistry and Molecular EngineeringEast China Normal University Shanghai P. R. China
- State Key Laboratory of High Performance Ceramics and Superfine MicrostructuresShanghai Institute of CeramicsChinese Academy of Sciences Shanghai P. R. China
| |
Collapse
|
6
|
O'Reilly D, Buchanan P. Calcium channels and cancer stem cells. Cell Calcium 2019; 81:21-28. [PMID: 31163289 DOI: 10.1016/j.ceca.2019.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 05/21/2019] [Accepted: 05/21/2019] [Indexed: 12/24/2022]
Abstract
Cancer stem cells (CSC's) have emerged as a key area of investigation due to associations with cancer development and treatment resistance, related to their ability to remain quiescent, self-renew and terminally differentiate. Targeting CSC's in addition to the tumour bulk could ensure complete removal of the cancer, lessening the risk of relapse and improving patient survival. Understanding the mechanisms supporting the functions of CSC's is essential to highlight targets for the development of therapeutic strategies. Changes in intracellular calcium through calcium channel activity is fundamental for integral cellular processes such as proliferation, migration, differentiation and survival in a range of cell types, under both normal and pathological conditions. Here in we highlight how calcium channels represent a key mechanism involved in CSC function. It is clear that expression and or function of a number of channels involved in calcium entry and intracellular store release are altered in CSC's. Correlating with aberrant proliferation, self-renewal and differentiation, which in turn promoted cancer progression and treatment resistance. Research outlined has demonstrated that targeting altered calcium channels in CSC populations can reduce their stem properties and induce terminal differentiation, sensitising them to existing cancer treatments. Overall this highlights calcium channels as emerging novel targets for CSC therapies.
Collapse
Affiliation(s)
- Debbie O'Reilly
- National Institute of Cellular Biotechnology, Dublin City University, Dublin, Ireland; School of Nursing and Human science, Dublin City University, Dublin, Ireland
| | - Paul Buchanan
- National Institute of Cellular Biotechnology, Dublin City University, Dublin, Ireland; School of Nursing and Human science, Dublin City University, Dublin, Ireland.
| |
Collapse
|
7
|
Xiao K, Yang K, Wang J, Sun P, Huang H, Khaliq H, Naeem MA, Zhong J, Peng K. Transcriptional Study Revealed That Boron Supplementation May Alter the Immune-Related Genes Through MAPK Signaling in Ostrich Chick Thymus. Biol Trace Elem Res 2019; 189:209-223. [PMID: 30094741 DOI: 10.1007/s12011-018-1441-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 07/10/2018] [Indexed: 01/13/2023]
Abstract
The objective of this study is to construct a digital gene expression tag profile to identify genes potentially related to immune response in the ostrich. Exposure to boron leads to an immune response in the ostrich, although the underlying mechanism remains obscure. Thus, a dire need of biological resource in the form of transcriptomic data for ostriches arises to key out genes and to gain insights into the function of boron on the immune response of thymus. For this purpose, RNA-Seq analysis was performed using the Illumina technique to investigate differentially expressed genes in ostrich thymuses treated with different boric acid concentrations (0, 80, and 640 mg/L). Compared with the control group, we identified 309 upregulated and 593 downregulated genes in the 80 mg/L treated sample and 228 upregulated and 1816 downregulated genes in 640 mg/L treated sample, respectively. Trend analysis of these differentially expressed genes uncovers three statistically significant trends. Functional annotation analysis of the differentially expressed genes verifies multiple functions associated with immune response. When ostrich thymuses were treated with boron, expression changes were observed in genes predominantly associated with MAPK and calcium signaling pathways. The results of this study provide all-inclusive information on gene expression at the transcriptional level that further enhances our apprehension for the molecular mechanisms of boron on the ostrich immune system. The calcium and MAPK signaling pathways might play a pivotal role in regulating the immune response of boron-treated ostriches.
Collapse
Affiliation(s)
- Ke Xiao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Keli Yang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Jing Wang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Pengpeng Sun
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Haibo Huang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Haseeb Khaliq
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Muhammad Ahsan Naeem
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Juming Zhong
- College of Veterinary Medicine, Auburn University, Auburn, AL, 36849, USA
| | - Kemei Peng
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China.
| |
Collapse
|
8
|
Altinoz MA, Topcu G, Elmaci İ. Boron's neurophysiological effects and tumoricidal activity on glioblastoma cells with implications for clinical treatment. Int J Neurosci 2019; 129:963-977. [PMID: 30885023 DOI: 10.1080/00207454.2019.1595618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Purpose: To define the actions of boron on normal neurophysiology and glioblastoma growth. Materials and Methods: PubMed and other relevant databases were searched. Results: Discovery of novel boron compounds in treatment of glioblastoma is being actively investigated, but the majority of such studies is focused on the synthesis of boron compounds as sensitizers to Boron Neutron Capture Therapy (BNCT). Nonetheless, the translational functionality of boron compounds is not limited to BNCT as many boron compounds possess direct tumoricidal activity and there is substantial evidence that certain boron compounds can cross the blood-brain barrier. Moreover, boron-containing compounds interfere with several tumorigenic pathways including intratumoral IGF-I levels, molybdenum Fe-S containing flavin hydroxylases, glycolysis, Transient Receptor Potential (TRP) and Store Operated Calcium Entry (SOCE) channels. Conclusions: Boron compounds deserve to be studied further in treatment of systemic cancers and glioblastoma due to their versatile antineoplastic functions.
Collapse
Affiliation(s)
- Meric A Altinoz
- Department of Medical Biochemistry, Acibadem University , Istanbul , Turkey.,Department of Psychiatry, Maastricht University , Holland , Turkey
| | - Gulacti Topcu
- Department of Pharmacognosy & Phytochemistry Faculty of Pharmacy, Bezmialem Vakif University , Istanbul , Turkey
| | - İlhan Elmaci
- Department of Neurosurgery, Acibadem Hospital , Istanbul , Turkey
| |
Collapse
|
9
|
Yamada KE, Eckhert CD. Boric Acid Activation of eIF2α and Nrf2 Is PERK Dependent: a Mechanism that Explains How Boron Prevents DNA Damage and Enhances Antioxidant Status. Biol Trace Elem Res 2019; 188:2-10. [PMID: 30196486 DOI: 10.1007/s12011-018-1498-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 08/28/2018] [Indexed: 02/06/2023]
Abstract
Boron is abundant in vegetables, nuts, legumes, and fruit and intake is associated with reduced risk of cancer and DNA damage and increased antioxidant status. Blood boric acid (BA) levels are approximately 10 μM BA in men at the mean US boron intake. Treatment of DU-145 human prostate cancer cells with 10 μM BA stimulates phosphorylation of elongation initiation factor 2α (eIF2α) at Ser51 leading to activation of the eIF2α/ATF4 pathway which activates the DNA damage-inducible protein GADD34. In the present study, we used MEF WT and MEF PERK (±) cells to test the hypothesis that BA-activated eIF2α phosphorylation requires protein kinase RNA-like endoplasmic reticulum kinase (PERK) and activates Nrf2 and the antioxidant response element (ARE). BA (10 μM) increased phosphorylation of eIF2α Ser51 in MEF WT cells at 1 h, but not in MEF Perk -/- cells exposed for as long as 6 h. GCN2 kinase-dependent phosphorylation of eIF2α Ser51 was activated in MEF PERK -/- cells by amino acid starvation. Nrf2 phosphorylation is PERK dependent and when activated is translocated from the cytoplasm to the nucleus where it acts as a transcription factor for ARE. DU-145 cells were treated with 10 μM BA and Nrf2 measured by immunofluorescence. Cytoplasmic Nrf2 was translocated to the nucleus at 1.5-2 h in DU-145 and MEF WT cells, but not MEF PERK -/- cells. Real-time PCR was used to measure mRNA levels of three ARE genes (HMOX-1, NQO1, and GCLC). Treatment with 10 μM BA increased the mRNA levels of all three genes at 1-4 h in DU-145 cells and HMOX1 and GCLC in MEF WT cells. These results extend the known boric acid signaling pathway to ARE-regulated genes. The BA signaling pathway can be expressed using the schematic [BA + cADPR → cADPR-BA → [[ER]i Ca2+↓] → 3 pathways: PERK/eIF2αP → pathways ATF4 and Nrf2; and [[ER]i Ca2+↓] → ER stress → ATF6 pathway. This signaling pathway provides a framework that links many of the molecular changes that underpin the biological effects of boron intake.
Collapse
Affiliation(s)
- Kristin E Yamada
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, 90095, CA, USA
| | - Curtis D Eckhert
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, 90095, CA, USA.
- Department of Environmental Health Sciences, Fielding School of Public Health, University of California, 650 Charles E. Young Dr., Los Angeles, CA, 90095, USA.
| |
Collapse
|
10
|
Gaffney-Stomberg E. The Impact of Trace Minerals on Bone Metabolism. Biol Trace Elem Res 2019; 188:26-34. [PMID: 30467628 DOI: 10.1007/s12011-018-1583-8] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 11/15/2018] [Indexed: 10/27/2022]
Abstract
Bone is a metabolically active tissue that responds to alterations in dietary intake and nutritional status. It is ~ 35% protein, mostly collagen which provides an organic scaffolding for bone mineral. The mineral is the remaining ~ 65% of bone tissue and composed mostly of calcium and phosphate in a form that is structurally similar to mineral within the apatite group. The skeletal tissue is constantly undergoing turnover through resorption by osteoclasts coupled with formation by osteoblasts. In this regard, the overall bone balance is determined by the relative contribution of each of these processes. In addition to macro minerals such as calcium, phosphorus, and magnesium which have well-known roles in bone health, trace elements such as boron, iron, zinc, copper, and selenium also impact bone metabolism. Effects of trace elements on skeletal metabolism and tissue properties may be indirect through regulation of macro mineral metabolism, or direct by affecting osteoblast or osteoclast proliferation or activity, or finally through incorporation into the bone mineral matrix. This review focuses on the skeletal impact of the following trace elements: boron, iron, zinc, copper, and selenium, and overviews the state of the evidence for each of these minerals.
Collapse
Affiliation(s)
- Erin Gaffney-Stomberg
- Military Performance Division of the US Army Research Institute of Environmental Medicine, Natick, MA, 01760, USA.
| |
Collapse
|
11
|
Bozkurt H, Kuru Bektaşoğlu P, Borekci A, Öztürk ÖÇ, Kertmen H, Eğilmez R, Yüce MF, Gürer B. Antifibrotic Effect of Boric Acid in Rats with Epidural Fibrosis. World Neurosurg 2018; 122:e989-e994. [PMID: 30399469 DOI: 10.1016/j.wneu.2018.10.187] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/25/2018] [Accepted: 10/27/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Epidural fibrosis is a major problem after spine surgery, with some patients having recurrent symptoms secondary to excessive formation of scar tissue resulting in neurologic compression. We used a rat laminectomy model to determine if topical application of boric acid could be helpful in the prevention of epidural fibrosis. METHODS Rats were randomly assigned to 2 control and 2 experimental groups (n = 8 for each group). The negative control group received no surgery, and the positive control group underwent laminectomy only. Experimental groups were classified according to the study agents applied onto the dura mater after laminectomy at the L3 level: 2.5% boric acid solution and 5% boric acid solution. The extent of epidural fibrosis was assessed 4 weeks later macroscopically and histopathologically. RESULTS Boric acid reduced epidural fibrosis in rats after laminectomy. The effect of 5% boric acid solution was more pronounced (P < 0.05) compared with the 2.5% solution. CONCLUSIONS The antifibrotic effect of boric acid solution for the prevention of epidural fibrosis suggests that boric acid should be further evaluated in future studies for the prevention of epidural fibrosis.
Collapse
Affiliation(s)
- Hüseyin Bozkurt
- Department of Neurosurgery, Sivas Cumhuriyet University School of Medicine, Sivas, Turkey
| | - Pınar Kuru Bektaşoğlu
- Department of Neurosurgery, Fatih Sultan Mehmet Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Istanbul, Turkey; Department of Physiology, Marmara University School of Medicine, Istanbul, Turkey.
| | - Ali Borekci
- Department of Neurosurgery, Sancaktepe Şehit Prof.Dr. İlhan Varank Education and Research Hospital, Turkish Ministry of Health, Istanbul, Turkey
| | - Özden Çağlar Öztürk
- Department of Neurosurgery, Fatih Sultan Mehmet Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Istanbul, Turkey
| | - Hayri Kertmen
- Department of Neurosurgery, Dışkapı Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Ankara, Turkey
| | - Reyhan Eğilmez
- Department of Pathology, Sivas Cumhuriyet University School of Medicine, Sivas, Turkey
| | - Mehmet Fatih Yüce
- Department of Anesthesia, Fatih Sultan Mehmet Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Istanbul, Turkey
| | - Bora Gürer
- Department of Neurosurgery, Fatih Sultan Mehmet Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Istanbul, Turkey
| |
Collapse
|
12
|
Khaliq H, Juming Z, Ke-Mei P. The Physiological Role of Boron on Health. Biol Trace Elem Res 2018; 186:31-51. [PMID: 29546541 DOI: 10.1007/s12011-018-1284-3] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 02/21/2018] [Indexed: 12/20/2022]
Abstract
Boron is an essential mineral that plays an important role in several biological processes. Boron is required for growth of plants, animals, and humans. There are increasing evidences of this nutrient showing a variety of pleiotropic effects, ranging from anti-inflammatory and antioxidant effects to the modulation of different body systems. In the past few years, the trials showed disease-related polymorphisms of boron in different species, which has drawn attention of scientists to the significance of boron to health. Low boron profile has been related with poor immune function, increased risk of mortality, osteoporosis, and cognitive deterioration. High boron status revealed injury to cell and toxicity in different animals and humans. Some studies have shown some benefits of higher boron status, but findings have been generally mixed, which perhaps accentuates the fact that dietary intake will benefit only if supplemental amount is appropriate. The health benefits of boron are numerous in animals and humans; for instance, it affects the growth at safe intake. Central nervous system shows improvement and immune organs exhibit enhanced immunity with boron supplementation. Hepatic metabolism also shows positive changes in response to dietary boron intake. Furthermore, animals and human fed diets supplemented with boron reveal improved bone density and other benefits including embryonic development, wound healing, and cancer therapy. It has also been reported that boron affects the metabolism of several enzymes and minerals. In the background of these health benefits, low or high boron status is giving cause for concern. Additionally, researches are needed to further elucidate the mechanisms of boron effects, and determine the requirements in different species.
Collapse
Affiliation(s)
- Haseeb Khaliq
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Zhong Juming
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
- College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Peng Ke-Mei
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China.
| |
Collapse
|
13
|
Şen Ö, Emanet M, Çulha M. One-Step Synthesis of Hexagonal Boron Nitrides, Their Crystallinity and Biodegradation. Front Bioeng Biotechnol 2018; 6:83. [PMID: 29977891 PMCID: PMC6021499 DOI: 10.3389/fbioe.2018.00083] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 06/01/2018] [Indexed: 11/25/2022] Open
Abstract
Hexagonal boron nitrides (hBNs) have recently been investigated for several novel applications due to their unique properties such as biocompatibility, superhydrophobicity, electrical insulation, and thermal and chemical stability. In addition, their biodegradation products have recently reported to have therapeutic effect on certain cancer types. hBNs are easily synthesized from boron and nitrogen precursors at moderately low temperatures. However, crystallinity and yield vary depending on the type of precursor, reaction temperature, and duration. In this study, a simple one-step hBNs synthesis method is reported without a catalyst, which might be an undesired contaminant for biomedical applications. The influence of boron precursors (boric acid, colemanite, or boron trioxide) on hBNs crystallinity, stability, and biodegradation in suspensions containing oxidative and hydrolytic degradation agents is investigated with the aim of their possible application in biomedicine. We found that the choice of boron precursor is a critically important parameter controlling the hBNs crystallinity and dependently influencing the biodegradation rate.
Collapse
Affiliation(s)
- Özlem Şen
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Melis Emanet
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Mustafa Çulha
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| |
Collapse
|
14
|
|
15
|
Uluisik I, Karakaya HC, Koc A. The importance of boron in biological systems. J Trace Elem Med Biol 2018; 45:156-162. [PMID: 29173473 DOI: 10.1016/j.jtemb.2017.10.008] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 03/13/2017] [Accepted: 10/17/2017] [Indexed: 12/18/2022]
Abstract
Boron is an essential element for plants and probably essential for human and animal health. Boron has a broad range of physiological effects on biological systems at low concentrations, whereas it is toxic to at high concentrations. Eventhough there are many studies on boron's biological effects and toxicity, more information is needed to understand the mechanisms of its action. The aim of the current work is to review boron's function, transport and toxicity in different biological systems.
Collapse
Affiliation(s)
- Irem Uluisik
- Izmir Institute of Technology, Department of Molecular Biology and Genetics, 35430 Urla, Izmir, Turkey
| | - Huseyin Caglar Karakaya
- Izmir Institute of Technology, Department of Molecular Biology and Genetics, 35430 Urla, Izmir, Turkey
| | - Ahmet Koc
- Inonu University, Medical School, Department of Medical Biology and Genetics, Battalgazi, Malatya, Turkey.
| |
Collapse
|
16
|
Bhasker TV, Gowda NKS, Pal DT, Bhat SK, Krishnamoorthy P, Mondal S, Pattanaik AK, Verma AK. Influence of boron supplementation on performance, immunity and antioxidant status of lambs fed diets with or without adequate level of calcium. PLoS One 2017; 12:e0187203. [PMID: 29141035 PMCID: PMC5687717 DOI: 10.1371/journal.pone.0187203] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 10/16/2017] [Indexed: 12/15/2022] Open
Abstract
Little is known about biological significance of effects of dietary Boron (B) and Calcium (Ca) interaction on health and production of farm animals. This is a preliminary investigation to evaluate the effects of B supplementation in lambs fed diets with (normal) or without adequate (low) levels of Ca. Twenty-four crossbred ram lambs were randomly distributed into four groups with six animals each in a 2x2 factorial design namely, normal-Ca diet (NCa) and low-Ca diet (LCa) fed without or with 40 ppm B (NCaB-40 and LCaB-40). The lambs were fed paddy straw and hybrid napier hay-based total mixed ration (60 roughage: 40 concentrate) during 180 days experimental period. Compared to control, the LCa diet lowered (P<0.01) average daily gain of lambs, but B-supplementation (LCaB-40) of the same nullified the effect. The lowered (P<0.05) total antioxidant activity and humoral immune response in lambs fed LCa diet were restored (P>0.05) to become at par with the control (NCa) upon supplementation of B (LCaB-40). The mRNA expression of SOD1 was lowered (P<0.05) due to LCa diet feeding which too was normalized on B-supplementation to become at par (P>0.05) with the control (NCa). Further, B-supplementation restored lowered (P<0.05) SOD1 gene expression on LCa diet, but enhanced (P<0.05) that in NCaB-40 group, when compared to the control (NCa) diet fed animals. However, these variations were not reflected in the SOD activity in the erythrocytes. The cell-mediated immune response was higher (P<0.05) in lambs fed LCa and LCaB-40 groups and there was no significant interaction between the levels of either Ca or B in diets with the period of immune response measurement. B- supplementation of LCa diet ameliorated tissue degenerative changes in liver and kidney. It was concluded that feeding LCa diet to lambs resulted in reduced growth rate, total antioxidant activity, humoral immune response along with degenerative changes in liver and kidney tissues, but B-supplementation of such diet restored most of these changes and ameliorated histopathological alterations.
Collapse
Affiliation(s)
- T. Vijay Bhasker
- Animal Nutrition Division, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - N. K. S. Gowda
- Animal Nutrition Division, ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
- * E-mail:
| | - D. T. Pal
- Animal Nutrition Division, ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
| | - S. Karthik Bhat
- Animal Nutrition Division, ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
| | - P. Krishnamoorthy
- ICAR-National Institute of Veterinary Epidemiology and Disease Informatics, Bangalore, India
| | - S. Mondal
- Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
| | - A. K. Pattanaik
- Animal Nutrition Division, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| | - A. K. Verma
- Animal Nutrition Division, ICAR-Indian Veterinary Research Institute, Izatnagar, India
| |
Collapse
|
17
|
Sogut I, Paltun SO, Tuncdemir M, Ersoz M, Hurdag C. The antioxidant and antiapoptotic effect of boric acid on hepatoxicity in chronic alcohol-fed rats. Can J Physiol Pharmacol 2017; 96:404-411. [PMID: 28898587 DOI: 10.1139/cjpp-2017-0487] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The harmful use of alcohol is a worldwide problem involving all ages. This study aims to investigate chronic alcohol exposure related hepatotoxicity on the rat liver and possible hepatoprotective effects of boric acid. Rats were separated into 4 different groups: control, ethanol, ethanol+boric acid, and boric acid. We measured (i) malondialdehyde (MDA), total sialic acid (TSA), superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) levels, which are known to be the markers of alcohol damage; and also (ii) caspase-3, tumor necrosis factor-alpha (TNF-α), and the terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) as the markers of apoptosis. In the ethanol group, MDA, TSA, and TNF-α levels increased whereas SOD and CAT levels decreased compared with the control group. Ethanol+boric acid group MDA, TSA, caspase-3, and TNF-α levels decreased whereas SOD and CAT levels increased compared with the ethanol group. Using histopathological evaluation of light microscope images, immunohistochemical caspase-3 and TNF-α activity in the ethanol+boric acid group were shown to be decreased compared with that in the ethanol group. Our results revealed that ethanol is capable of triggering oxidative stress and apoptosis in the rat liver. We propose that boric acid is an effective compound in protecting the rat liver against ethanol.
Collapse
Affiliation(s)
- Ibrahim Sogut
- a Vocational School of Health Services, Istanbul Bilim University, Istanbul, Turkey
| | - Sıla Ozlem Paltun
- b Department of Histology and Embryology, Faculty of Medicine, Istanbul Bilim University, Istanbul, Turkey
| | - Matem Tuncdemir
- c Department of Medical Biology, Faculty of Medicine, Istanbul University, Istanbul, Turkey
| | - Melike Ersoz
- d Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Istanbul Bilim University, Istanbul, Turkey
| | - Canan Hurdag
- b Department of Histology and Embryology, Faculty of Medicine, Istanbul Bilim University, Istanbul, Turkey
| |
Collapse
|
18
|
Kobylewski SE, Henderson KA, Yamada KE, Eckhert CD. Activation of the EIF2α/ATF4 and ATF6 Pathways in DU-145 Cells by Boric Acid at the Concentration Reported in Men at the US Mean Boron Intake. Biol Trace Elem Res 2017; 176:278-293. [PMID: 27587023 PMCID: PMC5344959 DOI: 10.1007/s12011-016-0824-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 08/15/2016] [Indexed: 02/06/2023]
Abstract
Fruits, nuts, legumes, and vegetables are rich sources of boron (B), an essential plant nutrient with chemopreventive properties. Blood boric acid (BA) levels reflect recent B intake, and men at the US mean intake have a reported non-fasting level of 10 μM. Treatment of DU-145 prostate cancer cells with physiological concentrations of BA inhibits cell proliferation without causing apoptosis and activates eukaryotic initiation factor 2 (eIF2α). EIF2α induces cell differentiation and protects cells by redirecting gene expression to manage endoplasmic reticulum stress. Our objective was to determine the temporal expression of endoplasmic reticulum (ER) stress-activated genes in DU-145 prostate cells treated with 10 μM BA. Immunoblots showed post-treatment increases in eIF2α protein at 30 min and ATF4 and ATF6 proteins at 1 h and 30 min, respectively. The increase in ATF4 was accompanied by an increase in the expression of its downstream genes growth arrest and DNA damage-induced protein 34 (GADD34) and homocysteine-induced ER protein (Herp), but a decrease in GADD153/CCAAT/enhancer-binding protein homologous protein (CHOP), a pro-apoptotic gene. The increase in ATF6 was accompanied by an increase in expression of its downstream genes GRP78/BiP, calreticulin, Grp94, and EDEM. BA did not activate IRE1 or induce cleavage of XBP1 mRNA, a target of IRE1. Low boron status has been associated with increased cancer risk, low bone mineralization, and retinal degeneration. ATF4 and BiP/GRP78 function in osteogenesis and bone remodeling, calreticulin is required for tumor suppressor p53 function and mineralization of teeth, and BiP/GRP78 and EDEM prevent the aggregation of misfolded opsins which leads to retinal degeneration. The identification of BA-activated genes that regulate its phenotypic effects provides a molecular underpinning for boron nutrition and biology.
Collapse
Affiliation(s)
- Sarah E Kobylewski
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Kimberly A Henderson
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Kristin E Yamada
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Curtis D Eckhert
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA.
- Department of Environmental Health Sciences, University of California, Fielding School of Public Health, 650 Charles E. Young Dr., Los Angeles, CA, 90095, USA.
| |
Collapse
|
19
|
Li X, Wang X, Zhang J, Hanagata N, Wang X, Weng Q, Ito A, Bando Y, Golberg D. Hollow boron nitride nanospheres as boron reservoir for prostate cancer treatment. Nat Commun 2017; 8:13936. [PMID: 28059072 PMCID: PMC5228389 DOI: 10.1038/ncomms13936] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 11/15/2016] [Indexed: 12/01/2022] Open
Abstract
High global incidence of prostate cancer has led to a focus on prevention and treatment strategies to reduce the impact of this disease in public health. Boron compounds are increasingly recognized as preventative and chemotherapeutic agents. However, systemic administration of soluble boron compounds is hampered by their short half-life and low effectiveness. Here we report on hollow boron nitride (BN) spheres with controlled crystallinity and boron release that decrease cell viability and increase prostate cancer cell apoptosis. In vivo experiments on subcutaneous tumour mouse models treated with BN spheres demonstrated significant suppression of tumour growth. An orthotopic tumour growth model was also utilized and further confirmed the in vivo anti-cancer efficacy of BN spheres. Moreover, the administration of hollow BN spheres with paclitaxel leads to synergetic effects in the suppression of tumour growth. The work demonstrates that hollow BN spheres may function as a new agent for prostate cancer treatment. Use of soluble boron compounds in prostate cancer therapy is hampered by their short half-life time and low effectiveness. Here, the authors show that boron nitride nanospheres with controlled boron release can reduce proliferation of prostate cancer cells and inhibit tumour growth in animal models.
Collapse
Affiliation(s)
- Xia Li
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Xiupeng Wang
- Health Research Institute, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
| | - Jun Zhang
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.,School of Materials Science and Engineering, Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, China
| | - Nobutaka Hanagata
- Nanotechnology Innovation Station, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Xuebin Wang
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Qunhong Weng
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Atsuo Ito
- Health Research Institute, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
| | - Yoshio Bando
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Dmitri Golberg
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| |
Collapse
|
20
|
Tepedelen BE, Soya E, Korkmaz M. Boric Acid Reduces the Formation of DNA Double Strand Breaks and Accelerates Wound Healing Process. Biol Trace Elem Res 2016; 174:309-318. [PMID: 27154731 DOI: 10.1007/s12011-016-0729-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 04/27/2016] [Indexed: 01/28/2023]
Abstract
Boron is absorbed by the digestive and respiratory system, and it was considered that it is converted to boric acid (BA), which was distributed to all tissues above 90 %. The biochemical essentiality of boron element is caused by boric acid because it affects the activity of several enzymes involved in the metabolism. DNA damage repair mechanisms and oxidative stress regulation is quite important in the transition stage from normal to cancerous cells; thus, this study was conducted to investigate the protective effect of boric acid on DNA damage and wound healing in human epithelial cell line. For this purpose, the amount of DNA damage occurred with irinotecan (CPT-11), etoposide (ETP), doxorubicin (Doxo), and H2O2 was determined by immunofluorescence through phosphorylation of H2AX(Ser139) and pATM(Ser1981) in the absence and presence of BA. Moreover, the effect of BA on wound healing has been investigated in epithelial cells treated with these agents. Our results demonstrated that H2AX(Ser139) foci numbers were significantly decreased in the presence of BA while wound healing was accelerated by BA compared to that in the control and only drug-treated cells. Eventually, the results indicate that BA reduced the formation of DNA double strand breaks caused by agents as well as improving the wound healing process. Therefore, we suggest that boric acid has important therapeutical effectiveness and may be used in the treatment of inflammatory diseases where oxidative stress and wound healing process plays an important role.
Collapse
Affiliation(s)
| | - Elif Soya
- Department of Medical Biology, Faculty of Medicine, Celal Bayar University, 45030, Manisa, Turkey
| | - Mehmet Korkmaz
- Department of Medical Biology, Faculty of Medicine, Celal Bayar University, 45030, Manisa, Turkey
| |
Collapse
|
21
|
Apdik H, Doğan A, Demirci S, Aydın S, Şahin F. Dose-dependent Effect of Boric Acid on Myogenic Differentiation of Human Adipose-derived Stem Cells (hADSCs). Biol Trace Elem Res 2015; 165:123-30. [PMID: 25637568 DOI: 10.1007/s12011-015-0253-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 01/22/2015] [Indexed: 01/19/2023]
Abstract
Boron, a vital micronutrient for plant metabolism, is not fully elucidated for embryonic and adult body development, and tissue regeneration. Although optimized amount of boron supplement has been shown to be essential for normal gestational development in zebrafish and frog and beneficial for bone regeneration in higher animals, effects of boron on myogenesis and myo-regeneration remains to be solved. In the current study, we investigated dose-dependent activity of boric acid on myogenic differentiation of human adipose-derived stem cells (hADSCs) using immunocytochemical, gene, and protein expression analysis. The results revealed that while low- (81.9 μM) and high-dose (819.6 μM) boron treatment increased myogenic gene expression levels such as myosin heavy chain (MYH), MyoD, myogenin, and desmin at day 4 of differentiation, high-dose treatment decreased myogenic-related gene and protein levels at day 21 of differentiation, confirmed by immunocytochemical analysis. The findings of the study present not only an understanding of boron's effect on myogenic differentiation but also an opportunity for the development of scaffolds to be used in skeletal tissue engineering and supplements for embryonic muscle growth. However, fine dose tuning and treatment period arranging are highly warranted as boron treatment over required concentrations and time might result in detrimental outcomes to myogenesis and myo-regeneration.
Collapse
Affiliation(s)
- Hüseyin Apdik
- Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 34755, Kayışdağı, Istanbul, Turkey
| | | | | | | | | |
Collapse
|
22
|
Henderson KA, Kobylewski SE, Yamada KE, Eckhert CD. Boric acid induces cytoplasmic stress granule formation, eIF2α phosphorylation, and ATF4 in prostate DU-145 cells. Biometals 2014; 28:133-41. [PMID: 25425213 PMCID: PMC4300416 DOI: 10.1007/s10534-014-9809-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 11/13/2014] [Indexed: 11/26/2022]
Abstract
Dietary boron intake is associated with reduced prostate and lung cancer risk and increased bone mass. Boron is absorbed and circulated as boric acid (BA) and at physiological concentrations is a reversible competitive inhibitor of cyclic ADP ribose, the endogenous agonist of the ryanodine receptor calcium (Ca+2) channel, and lowers endoplasmic reticulum (ER) [Ca2+]. Low ER [Ca2+] has been reported to induce ER stress and activate the eIF2α/ATF4 pathway. Here we report that treatment of DU-145 prostate cells with physiological levels of BA induces ER stress with the formation of stress granules and mild activation of eIF2α, GRP78/BiP, and ATF4. Mild activation of eIF2α and its downstream transcription factor, ATF4, enables cells to reconfigure gene expression to manage stress conditions and mild activation of ATF4 is also required for the differentiation of osteoblast cells. Our results using physiological levels of boric acid identify the eIF2α/ATF pathway as a plausible mode of action that underpins the reported health effects of dietary boron.
Collapse
Affiliation(s)
- Kimberly A. Henderson
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA USA
| | - Sarah E. Kobylewski
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA USA
| | - Kristin E. Yamada
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA USA
| | - Curtis D. Eckhert
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA USA
- Department of Environmental Health Sciences, University of California, Charles E. Young Drive, Los Angeles, CA 90095 USA
| |
Collapse
|
23
|
Abstract
In vitro, animal, and human experiments have shown that boron is a bioactive element in nutritional amounts that beneficially affects bone growth and central nervous system function, alleviates arthritic symptoms, facilitates hormone action and is associated with a reduced risk for some types of cancer. The diverse effects of boron suggest that it influences the formation and/or activity of substances that are involved in numerous biochemical processes. Several findings suggest that this influence is through the formation of boroesters in biomolecules containing cis-hydroxyl groups. These biomolecules include those that contain ribose (e.g., S-adenosylmethionine, diadenosine phosphates, and nicotinamide adenine dinucleotide). In addition, boron may form boroester complexes with phosphoinositides, glycoproteins, and glycolipids that affect cell membrane integrity and function. Both animal and human data indicate that an intake of less than 1.0mg/day inhibits the health benefits of boron. Dietary surveys indicate such an intake is not rare. Thus, increasing boron intake by consuming a diet rich in fruits, vegetables, nuts and pulses should be recognized as a reasonable dietary recommendation to enhance health and well-being.
Collapse
Affiliation(s)
- Forrest H Nielsen
- U.S. Department of Agriculture, Agricultural Research Service,(1) Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA.
| |
Collapse
|
24
|
Demirci S, Doğan A, Şişli B, Sahin F. Boron increases the cell viability of mesenchymal stem cells after long-term cryopreservation. Cryobiology 2014; 68:139-46. [DOI: 10.1016/j.cryobiol.2014.01.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Revised: 01/14/2014] [Accepted: 01/15/2014] [Indexed: 12/17/2022]
|
25
|
Mohd Fauzi F, Koutsoukas A, Lowe R, Joshi K, Fan TP, Glen RC, Bender A. Chemogenomics Approaches to Rationalizing the Mode-of-Action of Traditional Chinese and Ayurvedic Medicines. J Chem Inf Model 2013; 53:661-73. [DOI: 10.1021/ci3005513] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Fazlin Mohd Fauzi
- Unilever Centre
for Molecular
Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road,
Cambridge CB2 1EW, United Kingdom
- Universiti Teknologi MARA (UiTM) Malaysia, 40 450 Shah Alam, Selangor, Malaysia
| | - Alexios Koutsoukas
- Unilever Centre
for Molecular
Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road,
Cambridge CB2 1EW, United Kingdom
| | - Robert Lowe
- Blizard Institute of Cell and Molecular Science, Barts and The London School of Medicine and Dentistry, The Blizard Building, 4 Newark Street,
London E1 2AT, United Kingdom
| | - Kalpana Joshi
- Symbiosis School of Biomedical
Sciences, Symbiosis International University, Pune, India
| | - Tai-Ping Fan
- Department
of Pharmacology, University of Cambridge, Tennis Court Road, Cambridge CB2 1PD, United Kingdom
| | - Robert C. Glen
- Unilever Centre
for Molecular
Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road,
Cambridge CB2 1EW, United Kingdom
| | - Andreas Bender
- Unilever Centre
for Molecular
Science Informatics, Department of Chemistry, University of Cambridge, Lensfield Road,
Cambridge CB2 1EW, United Kingdom
| |
Collapse
|
26
|
Identification of ryanodine receptor isoforms in prostate DU-145, LNCaP, and PWR-1E cells. Biochem Biophys Res Commun 2012; 425:431-5. [PMID: 22846571 DOI: 10.1016/j.bbrc.2012.07.119] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 07/20/2012] [Indexed: 01/03/2023]
Abstract
The ryanodine receptor (RyR) is a large, intracellular calcium (Ca(2+)) channel that is associated with several accessory proteins and is an important component of a cell's ability to respond to changes in the environment. Three isoforms of the RyR exist and are well documented for skeletal and cardiac muscle and the brain, but the isoforms in non-excitable cells are poorly understood. The aggressiveness of breast cancers in women has been positively correlated with the expression of the RyR in breast tumor tissue, but it is unknown if this is limited to specific isoforms. Identification and characterization of RyRs in cancer models is important in understanding the role of the RyR channel complex in cancer and as a potential therapeutic target. The objective of this report was to identify the RyR isoforms expressed in widely used prostate cancer cell lines, DU-145 and LNCaP, and the non-tumorigenic prostate cell line, PWR-1E. Oligonucleotide primers specific for each isoform were used in semi-quantitative and real-time PCR to determine the identification and expression levels of the RyR isoforms. RyR1 was expressed in the highest amount in DU-145 tumor cells, expression was 0.48-fold in the non-tumor cell line PWR-1E compared to DU-145 cells, and no expression was observed in LNCaP tumor cells. DU-145 cells had the lowest expression of RyR2. The expression was 26- and 15-fold higher in LNCaP and PWR-1E cells, respectively. RyR3 expression was not observed in any of the cell lines. All cell types released Ca(2+) in response to caffeine showing they had functional RyRs. Total cellular RyR-associated Ca(2+) release is determined by both the number of activated RyRs and its accessory proteins which modulate the receptor. Our results suggest that the correlation between the expression of the RyR and tumor aggression is not related to specific RyR isoforms, but may be related to the activity and number of receptors.
Collapse
|
27
|
Ellagic acid protects human keratinocyte (HaCaT) cells against UVA-induced oxidative stress and apoptosis through the upregulation of the HO-1 and Nrf-2 antioxidant genes. Food Chem Toxicol 2012; 50:1245-55. [PMID: 22386815 DOI: 10.1016/j.fct.2012.02.020] [Citation(s) in RCA: 174] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 02/04/2012] [Accepted: 02/13/2012] [Indexed: 12/11/2022]
Abstract
UV radiation from the sun is a potent environmental risk factor in the pathogenesis of skin damage. Much of the skin damage caused by ultraviolet A (UVA) irradiation from the sun is associated with oxidative stress. The aim of this study was to investigate the protective role of ellagic acid (25-75 μM), a natural antioxidant, against UVA (5-20 J/cm(2))-induced oxidative stress and apoptosis in human keratinocyte (HaCaT) cells and to reveal the possible mechanisms underlying this protective efficacy. Ellagic acid pre-treatment markedly increased HaCaT cell viability and suppressed UVA-induced ROS generation and MDA formation. Moreover, ellagic acid pre-treatment prevented UVA-induced DNA damage as evaluated by the comet assay. Ellagic acid treatment also significantly inhibited the UVA-induced apoptosis of HaCaT cells, as measured by a reduction of DNA fragmentation, mitochondria dysfunction, ER stress, caspase-3 activation, and Bcl-2/Bax deregulation. Notably, the antioxidant potential of ellagic acid was directly correlated with the increased expression of HO-1 and SOD, which was followed by the downregulation of Keap1 and the augmented nuclear translocation and transcriptional activation of Nrf2 with or without UVA irradiation. Nrf2 knockdown diminished the protective effects of ellagic acid. Therefore, ellagic acid may be useful for the treatment of UVA-induced skin damage.
Collapse
|
28
|
McAuley EM, Bradke TA, Plopper GE. Phenylboronic acid is a more potent inhibitor than boric acid of key signaling networks involved in cancer cell migration. Cell Adh Migr 2012; 5:382-6. [PMID: 21975546 DOI: 10.4161/cam.5.5.18162] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Previous studies from our lab have shown that both boric (BA) and phenylboronic- acid (PBA) inhibit the migration of prostate cancer cell lines, as well as non-tumorigenic prostate cells. Our results indicate that PBA is more potent than BA in targeting metastatic and proliferative properties of cancer cells. Here we focus on the impact of BA and PBA on Rho family of GTP-binding proteins and their downstream targets. Treatment with 1mM PBA and BA decreases activities of RhoA, Rac1, and Cdc42 in DU-145 metastatic prostate cancer cells, but not in normal RWPE-1 prostate cells. Furthermore, ROCKII activity and phosphorylation of myosin light chain kinase decrease as a result of either PBA or BA treatment in DU-145 cells, suggesting these compounds target actomyosin-based contractility.
Collapse
Affiliation(s)
- Erin M McAuley
- Department of Biology, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY USA
| | | | | |
Collapse
|
29
|
Nielsen FH, Meacham SL. Growing Evidence for Human Health Benefits of Boron. J Evid Based Complementary Altern Med 2011. [DOI: 10.1177/2156587211407638] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Growing evidence from a variety of experimental models shows that boron is a bioactive and beneficial (perhaps essential) element for humans. Reported beneficial actions of boron include arthritis alleviation or risk reduction, bone growth and maintenance, central nervous system function, cancer risk reduction, hormone facilitation, and immune response, inflammation, and oxidative stress modulation. The diverse effects of boron indicate that it influences the formation and/or activity of an entity that is involved in many biochemical processes. Formation of boroesters with the ribose moiety of compounds involved in numerous reactions, such as S-adenosylmethionine and oxidized nicotinamide adenine dinucleotide (NAD+) might be the reason for boron bioactivity. Both animal and human data suggest that boron intakes should be >1.0 mg/d. Many people consume less than this amount. Thus, a low boron intake should be considered a health concern, which can be prevented by diets rich in fruits, vegetables, nuts, and pulses.
Collapse
Affiliation(s)
- Forrest H. Nielsen
- USDA, ARS, Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA
| | | |
Collapse
|