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Ramezani R, Mohammadian M, Hosseini ES, Zare M. The effect of bovine milk lactoferrin-loaded exosomes (exoLF) on human MDA-MB-231 breast cancer cell line. BMC Complement Med Ther 2023; 23:228. [PMID: 37422619 DOI: 10.1186/s12906-023-04045-1] [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: 11/22/2022] [Accepted: 06/18/2023] [Indexed: 07/10/2023] Open
Abstract
BACKGROUND Cancer is still the most challenging disease and is responsible for many deaths worldwide. Considerable research now focuses on targeted therapy in cancer using natural components to improve anti-tumor efficacy and reduce unfavorable effects. Lactoferrin is an iron-binding glycoprotein found in body fluids. Increasing evidence suggests that lactoferrin is a safe agent capable of inducing anti-cancer effects. Therefore, we conducted a study to evaluate the effects of the exosomal form of bovine milk lactoferrin on a human MDA-MB-231 breast cancer cell line. METHODS The exosomes were isolated from cancer cells by ultracentrifugation and incorporated with bovine milk lactoferrin through the incubation method. The average size of the purified exosome was determined using SEM imaging and DLS analysis. The maximum percentage of lactoferrin-loaded exosomes (exoLF) was achieved by incubating 1 mg/ml of lactoferrin with 30 µg/ml of MDA-MB-231 cells-derived exosomes. Following treatment of MDA-MB-231 cancer cells and normal cells with 1 mg/ml exoLF MTT assay applied to evaluate the cytotoxicity, PI/ annexin V analysis was carried out to illustrate the apoptotic phenotype, and the real-time PCR was performed to assess the pro-apoptotic protein, Bid, and anti-apoptotic protein, Bcl-2. RESULTS The average size of the purified exosome was about 100 nm. The maximum lactoferrin loading efficiency of exoLF was 29.72%. MTT assay showed that although the 1 mg/ml exoLF treatment of MDA-MB-231 cancer cells induced 50% cell growth inhibition, normal mesenchymal stem cells remained viable. PI/ annexin V analysis revealed that 34% of cancer cells had late apoptotic phenotype after treatment. The real-time PCR showed an elevated expression of pro-apoptotic protein Bid and diminished anti-apoptotic protein Bcl-2 following exoLF treatment. CONCLUSION These results suggested that exoLF could induce selective cytotoxicity against cancer cells compared to normal cells. Incorporating lactoferrin into the exosome seems an effective agent for cancer therapy. However, further studies are required to evaluate anti-tumor efficacy and the underlying mechanism of exoLF in various cancer cell lines and animal models.
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Affiliation(s)
- Reihaneh Ramezani
- Department of Family Therapy, Women Research Center, Alzahra University, Tehran, Iran.
| | - Mozhdeh Mohammadian
- Department of Hematology and Cell Therapy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Elaheh Sadat Hosseini
- Department of Genetics, Faculty of Life Sciences, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Mehrak Zare
- Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Evaluation of the effect of nano-encapsulated lactoferrin on the expression of Bak and Bax genes in gastric cancer cell line AGS and study of the molecular docking of lactoferrin with these proteins. Gene 2023; 866:147355. [PMID: 36907277 DOI: 10.1016/j.gene.2023.147355] [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: 08/28/2022] [Revised: 10/31/2022] [Accepted: 03/06/2023] [Indexed: 03/13/2023]
Abstract
lactoferrin (Lf) is a glycoprotein with various biological activities, including antibacterial, antiviral, anti-cancer, etc. In the present study, the effect of different concentrations of nano-encapsulated lactoferrin (NE-Lf) on the expression of Bax and Bak genes was evaluated in stomach cancer cell line AGS using real-time PCR technique and cytotoxicity of NE-Lf on the growth cells as well as the molecular mechanism of these two genes and their proteins in the apoptosis pathway and the relationship between lactoferrin and these proteins were investigated by bioinformatics studies. In the viability test, the results showed that the growth inhibition effect of nano-lactoferrin was greater than lactoferrin in both concentrations, and chitosan had no inhibitory effect on the cells. In concentrations of 250 and 500 µg of NE-Lf Bax gene expression increased by 2.3 and 5 times, respectively, and Bak gene expression increased by 1.94 and 1.74 times, respectively. Statistical analysis showed that there is a significant difference in the relative amount of gene expression between the treatments in both genes (P < 0.05). The binding mode of lactoferrin with Bax and Bak proteins was obtained using docking. According to docking results, the N-lobe region of lactoferrin interacts with the Bax protein, as well as the Bak protein. The results show that lactoferrin, in addition to acting on the gene, interacts with Bax and Bak proteins. Since two proteins are components of apoptosis, lactoferrin can induce apoptosis in this way.
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Costantini E, Di Nicola M, Marchioni M, Aielli L, Reale M, Schips L. Effects of Curcumin and Lactoferrin to Inhibit the Growth and Migration of Prostatic Cancer Cells. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16193. [PMID: 36498267 PMCID: PMC9737629 DOI: 10.3390/ijerph192316193] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/25/2022] [Accepted: 12/01/2022] [Indexed: 05/14/2023]
Abstract
Prostate cancer remains one of the main causes of death for men worldwide. Despite recent advances in cancer treatment, patients develop resistance after an initial period of optimal efficacy. Nowadays, it is accepted that natural compounds can result in health benefits with a preventive or adjuvant effect. The purpose of this study was to evaluate the effects of curcumin (CU), a bioactive compound in the spice turmeric, and lactoferrin (LF), a natural glycoprotein with immunomodulatory properties, on DU145 and PC3. Prostate cancer cells were cultured with and without LF (175 μM) and CU (2.5 μg/mL and 5 μg/mL), alone and in combination. Cell viability, migration ability, death receptors (DRs), and integrins (α3, β1) gene expression were evaluated, as well as human annexin V quantification and Akt phosphorylation. Differences among cells group, defined according to the treatment used, were assessed with ANOVA. The results showed that the effects of CU and LF are different between the two prostatic cell lines analyzed. In DU145, a reduction in cell proliferation and migration is reported both in the presence of single and combined treatments. In PC3 cells, there is a significant reduction in proliferation in the presence of CU alone, while the inhibition of migration is mainly related to the LF treatment and its combination with CU, compared to untreated cells. Moreover, the reduction in gene expression of integrins and Akt pathway activation were observed mostly in the presence of the CU and LF combination, including the upregulation of DR and annexin V levels, with greater significance for the DU145 cells. In conclusion, our results suggest that CU and LF may have a potentially beneficial effect, mainly when administered in combination, leading to a reduction in cancer cells' aggressiveness.
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Affiliation(s)
- Erica Costantini
- Department of Medicine and Aging Sciences, University “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy
| | - Marta Di Nicola
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy; (M.D.N.); (L.S.)
| | - Michele Marchioni
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy; (M.D.N.); (L.S.)
| | - Lisa Aielli
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy; (L.A.); (M.R.)
| | - Marcella Reale
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy; (L.A.); (M.R.)
| | - Luigi Schips
- Department of Medical, Oral and Biotechnological Sciences, University “G. d’Annunzio”, Via dei Vestini, 66100 Chieti, Italy; (M.D.N.); (L.S.)
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Ramírez-Rico G, Drago-Serrano ME, León-Sicairos N, de la Garza M. Lactoferrin: A Nutraceutical with Activity against Colorectal Cancer. Front Pharmacol 2022; 13:855852. [PMID: 35264972 PMCID: PMC8899398 DOI: 10.3389/fphar.2022.855852] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 01/31/2022] [Indexed: 12/29/2022] Open
Abstract
Homeostasis in the human body results from the tight regulation of several events, since too little inflammation disrupts the process of tissue repair and remodeling, whereas too much exerts a collateral effect by causing tissue damage with life-threatening consequences. In some clinical conditions, such as inflammatory bowel disease (IBD), inflammation functions as a double-edged sword by either enabling or inhibiting cancer development and progression. Generally, cancer develops through evasion mechanisms that regulate cell growth, causing a high rate of uncontrolled proliferation, and mechanisms for evading cell death, such as apoptosis. Moreover, chronic inflammation is a factor that contributes to colorectal cancer (CRC), as observed in individuals with IBD; all these conditions favor an increased rate of angiogenesis and eventual metastasis. Lactoferrin (Lf) is a mammalian iron-binding multifunctional glycoprotein regarded as a natural compound that up- and downregulates both humoral and cellular components of immunity involved in regulating the inflammatory response and maintaining gut homeostasis. Human and bovine Lf share high sequence homology and have very similar antimicrobial, anti-inflammatory, and immunomodulatory activities. Bovine Lf from milk is considered a safe molecule and is commercially available in large quantities. This review mainly focuses on the regulatory effects of orally administered bovine Lf on the inflammatory response associated with CRC; this approach indicates that CRC is one of the most frequently diagnosed cancers and affects the intestinal tract with high clinical and epidemiologic relevance. Thus, this review may provide foundations for the potential use of bovine Lf alone or as a natural adjunct agent to increase the effectiveness and reduce the side effects of anticancer chemotherapy.
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Affiliation(s)
- Gerardo Ramírez-Rico
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados Del Instituto Politécnico Nacional (CINVESTAV-IPN), México City, Mexico
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México (UNAM), México City, Mexico
| | - Maria Elisa Drago-Serrano
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana Unidad Xochimilco, Mexico City, Mexico
| | - Nidia León-Sicairos
- Centro de Investigación Aplicada a La Salud Pública (CIASaP), Facultad de Medicina, Universidad Autónoma de Sinaloa, Culiacán, Mexico
- Hospital Pediátrico de Sinaloa, Culiacán, Mexico
| | - Mireya de la Garza
- Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados Del Instituto Politécnico Nacional (CINVESTAV-IPN), México City, Mexico
- *Correspondence: Mireya de la Garza,
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Halder A, Jethwa M, Mukherjee P, Ghosh S, Das S, Helal Uddin ABM, Mukherjee A, Chatterji U, Roy P. Lactoferrin-tethered betulinic acid nanoparticles promote rapid delivery and cell death in triple negative breast and laryngeal cancer cells. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2021; 48:1362-1371. [PMID: 33284038 DOI: 10.1080/21691401.2020.1850465] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Cancer management presents multifarious problems. Triple negative breast cancer (TNBC) is associated with inaccurate prognosis and limited chemotherapeutic options. Betulinic acid (BA) prevents angiogenesis and causes apoptosis of TNBC cells. NIH recommends BA for rapid access in cancer chemotherapy because of its cell-specific toxicity. BA however faces major challenges in therapeutic practices due to its limited solubility and cellular entree. We report lactoferrin (Lf) attached BA nanoparticles (Lf-BAnp) for rapid delivery in triple negative breast (MDA-MB-231) and laryngeal (HEp-2) cancer cell types. Lf association was confirmed by SDS-PAGE and FT-IR analysis. Average hydrodynamic size of Lf-BAnp was 147.7 ± 6.20 nm with ζ potential of -28.51 ± 3.52 mV. BA entrapment efficiency was 75.38 ± 2.70% and the release mechanism followed non-fickian pattern. Impact of Lf-BAnp on cell cycle and cytotoxicity of triple negative breast cancer and its metastatic site laryngeal cancer cell lines were analyzed. Lf-BAnp demonstrated strong anti-proliferative and cytotoxic effects, along with increased sub-G1 population and reduced number of cells in G1 and G2/M phases of the cell cycle, confirming reduced cell proliferation and significant cell death. Speedy intracellular entry of Lf-BAnp occurred within 30 min. Lf-BAnp design was explored for the first time as safer chemotherapeutic arsenals against complex TNBC conditions.
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Affiliation(s)
- Asim Halder
- Department of Chemical Technology, University of Calcutta, Kolkata, India.,Department of Pharmaceutical Technology, JIS University, Kolkata, India
| | - Megha Jethwa
- Department of Chemical Technology, University of Calcutta, Kolkata, India
| | - Pritha Mukherjee
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, Kolkata, India
| | - Subarna Ghosh
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, Kolkata, India
| | - Suvadra Das
- Basic Science and Humanities Department, University of Engineering and Management, University Area, Kolkata, India
| | - A B M Helal Uddin
- Kulliyyah Of Pharmacy, International Islamic University Malaysia, Kuantan Campus, Kuantan, Pahang, Malaysia
| | - Arup Mukherjee
- Department of Biotechnology, Malulana Abul Kalam Azad University of Technology (formerly WBUT), Kolkata, India
| | - Urmi Chatterji
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, Kolkata, India
| | - Partha Roy
- Department of Pharmaceutical Technology, Adamas University, Kolkata, India
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Cutone A, Rosa L, Ianiro G, Lepanto MS, Bonaccorsi di Patti MC, Valenti P, Musci G. Lactoferrin's Anti-Cancer Properties: Safety, Selectivity, and Wide Range of Action. Biomolecules 2020; 10:biom10030456. [PMID: 32183434 PMCID: PMC7175311 DOI: 10.3390/biom10030456] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 02/07/2023] Open
Abstract
Despite recent advances in cancer therapy, current treatments, including radiotherapy, chemotherapy, and immunotherapy, although beneficial, present attendant side effects and long-term sequelae, usually more or less affecting quality of life of the patients. Indeed, except for most of the immunotherapeutic agents, the complete lack of selectivity between normal and cancer cells for radio- and chemotherapy can make them potential antagonists of the host anti-cancer self-defense over time. Recently, the use of nutraceuticals as natural compounds corroborating anti-cancer standard therapy is emerging as a promising tool for their relative abundance, bioavailability, safety, low-cost effectiveness, and immuno-compatibility with the host. In this review, we outlined the anti-cancer properties of Lactoferrin (Lf), an iron-binding glycoprotein of the innate immune defense. Lf shows high bioavailability after oral administration, high selectivity toward cancer cells, and a wide range of molecular targets controlling tumor proliferation, survival, migration, invasion, and metastasization. Of note, Lf is able to promote or inhibit cell proliferation and migration depending on whether it acts upon normal or cancerous cells, respectively. Importantly, Lf administration is highly tolerated and does not present significant adverse effects. Moreover, Lf can prevent development or inhibit cancer growth by boosting adaptive immune response. Finally, Lf was recently found to be an ideal carrier for chemotherapeutics, even for the treatment of brain tumors due to its ability to cross the blood-brain barrier, thus globally appearing as a promising tool for cancer prevention and treatment, especially in combination therapies.
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Affiliation(s)
- Antimo Cutone
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy;
- Correspondence: (A.C.); (G.M.)
| | - Luigi Rosa
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (L.R.); (M.S.L.); (P.V.)
| | - Giusi Ianiro
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy;
| | - Maria Stefania Lepanto
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (L.R.); (M.S.L.); (P.V.)
| | | | - Piera Valenti
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (L.R.); (M.S.L.); (P.V.)
| | - Giovanni Musci
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy;
- Correspondence: (A.C.); (G.M.)
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Li HY, Yang HG, Li P, Wang YZ, Huang GX, Xing L, Wang JQ, Zheng N. Effect of Heat Treatment on the Antitumor Activity of Lactoferrin in Human Colon Tumor (HT29) Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:140-147. [PMID: 30418775 DOI: 10.1021/acs.jafc.8b05131] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
To investigate the effect of heat treatment on the antitumor activity of lactoferrin in colon cancer cells and colon tumors, the HT-29 (human intestinal epithelial tumor cell) cell line was exposed to lactoferrin and various heat treatments. The impacts on cell proliferation, invasion, and migration were observed in vitro, and nude mice bearing HT29 tumors were administered lactoferrin and underwent various heat treatments in vivo. In the HT29 cell proliferation test using transwell and scratch analyses, lactoferrin (20 mg/mL) without or with heat treatment (50 and 70 °C) significantly inhibited cell proliferation, migration, and invasion (compared with the control, p < 0.05), while lactoferrin with heat treatment (100 °C) did not affect these parameters. In vivo, HT29 tumor weight was significantly reduced in the lactoferrin (without heat treatment and with 50 and 70 °C treatment) groups (1.59 ± 0.20, 1.67 ± 0.25, and 2.41 ± 0.42 g, compared with the control, p < 0.05), and there was no significant difference between the control (3.73 ± 0.33 g) and the 100 °C treatment group (3.58 ± 0.29 g). Moreover, 100 °C heat treatment reduced inhibition of the VEGFR2/VEGFA/PI3K/Akt/Erk1/2 angiogenesis pathway by lactoferrin. In summary, HT29 tumors were effectively suppressed by lactoferrin via inhibition of VEGFR2/VEGFA/PI3K/Akt/Erk1/2 pathway, and heat treatment affected the antitumor activity of lactoferrin in a temperature-dependent manner.
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Affiliation(s)
- Hui-Ying Li
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Huai-Gu Yang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Peng Li
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Yi-Zhen Wang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Guo-Xin Huang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Lei Xing
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Jia-Qi Wang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
| | - Nan Zheng
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193 , P. R. China
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Li HY, Li M, Luo CC, Wang JQ, Zheng N. Lactoferrin Exerts Antitumor Effects by Inhibiting Angiogenesis in a HT29 Human Colon Tumor Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10464-10472. [PMID: 29112400 DOI: 10.1021/acs.jafc.7b03390] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To investigate the effect and potential mechanisms of lactoferrin on colon cancer cells and tumors, HT29 and HCT8 cells were exposed to varying concentrations of lactoferrin, and the impacts on cell proliferation, migration, and invasion were observed. Cell proliferation test showed that high dosage of lactoferrin (5-100 mg/mL) inhibited cell viability in a dose-dependent manner, with the 50% concentration of inhibition at 81.3 ± 16.7 mg/mL and 101 ± 23.8 mg/mL for HT29 and HCT8 cells, respectively. Interestingly, migration and invasion of the cells were inhibited dramatically by 20 mg/mL lactoferrin, consistent with the significant down regulation of VEGFR2, VEGFA, pPI3K, pAkt, and pErk1/2 proteins. HT29 was chosen as the sensitive cell line to construct a tumor-bearing nude mice model. Notably, HT29 tumor weight was greatly reduced in both the lactoferrin group (26.5 ± 6.7 mg) and the lactoferrin/5-Fu group (14.5 ± 5.1 mg), compared with the control one (39.3 ± 6.5 mg), indicating that lactoferrin functioned as a tumor growth inhibitor. Considering lactoferrin also reduced the growth of blood vessels and the degree of malignancy, we concluded that HT29 tumors were effectively suppressed by lactoferrin, which might be achieved by regulation of phosphorylation from various kinases and activation of the VEGFR2-PI3K/Akt-Erk1/2 pathway.
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Affiliation(s)
- Hui-Ying Li
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Ming Li
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Chao-Chao Luo
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Jia-Qi Wang
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
| | - Nan Zheng
- Institute of Animal Sciences of Chinese Academy of Agricultural Sciences , Beijing 100193, People's Republic of China
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Jiang R, Lönnerdal B. Bovine lactoferrin and lactoferricin exert antitumor activities on human colorectal cancer cells (HT-29) by activating various signaling pathways. Biochem Cell Biol 2016; 95:99-109. [PMID: 28169560 DOI: 10.1139/bcb-2016-0094] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Lactoferrin (Lf) is an iron-binding glycoprotein that is present at high concentrations in milk. Bovine lactoferricin (LfcinB) is a peptide fragment generated by pepsin proteolysis of bovine lactoferrin (bLf). LfcinB consists of amino acid residues 17-41 proximal to the N-terminus of bLf and a disulfide bond between residues 19 and 36, forming a loop. Both bLf and LfcinB have been demonstrated to have antitumor activities. Colorectal cancer is the second most common cause of cancer death in developed countries. We hypothesized that bLf and LfcinB exert antitumor activities on colon cancer cells (HT-29) by triggering various signaling pathways. bLf and LfcinB significantly induced apoptosis in HT-29 cells but not in normal human intestinal epithelial cells, as revealed by the ApoTox-Glo Triplex Assay. The LIVE/DEAD cell viability assay showed that both bLf and LfcinB reduced the viability of HT-29 cells. Transcriptome analysis indicated that bLf, cyclic LfcinB, and linear LfcinB exerted antitumor activities by differentially activating diverse signaling pathways, including p53, apoptosis, and angiopoietin signaling. Immunoblotting results confirmed that both bLf and LfcinBs increased expression of caspase-8, p53, and p21, critical proteins in tumor suppression. These results provide valuable information regarding bLf and LfcinB for potential clinical applications in colon cancer therapy.
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Affiliation(s)
- Rulan Jiang
- Department of Nutrition, University of California, Davis, CA 95616, USA.,Department of Nutrition, University of California, Davis, CA 95616, USA
| | - Bo Lönnerdal
- Department of Nutrition, University of California, Davis, CA 95616, USA.,Department of Nutrition, University of California, Davis, CA 95616, USA
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Arcella A, Oliva MA, Staffieri S, Aalberti S, Grillea G, Madonna M, Bartolo M, Pavone L, Giangaspero F, Cantore G, Frati A. In vitro and in vivo effect of human lactoferrin on glioblastoma growth. J Neurosurg 2015; 123:1026-35. [PMID: 26186026 DOI: 10.3171/2014.12.jns14512] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECT Human lactoferrin (HLF) is a natural protein with antitumor activity. The aim of this study was to investigate the effects of HLF alone and in combination with temozolomide (TMZ), a conventional chemotherapeutic, on human glioblastoma (GBM) cells. METHODS The authors cultured fresh human primary cell lines NMD and FN and the continuous cell line U87MG to evaluate proliferation in the presence of HLF alone at different doses (1, 10, and 100 mg/ml, and 1 mg/ml) and in combination with TMZ. In in vivo experiments they assessed tumor size reduction in CD1 nude mice carrying an orthotopic GBM xenograft and orally treated with HLF. RESULTS Lactoferrin causes growth inhibition in the NMD and FN primary cell lines and in the U87MG continuous cell line. This inhibition seemed to be modulated by the downregulation of cyclin D1 and D4. Western blot and fluorescence-activated cell sorting analysis showed inhibition of the cell cycle in G0/G1 and G2 phases. When administered in nude mice, HLF (60 mg/kg/day) decreased tumor size about 30%, as shown in both histological analyses and high-field brain MRI. Administration of HLF with TMZ enhanced the effect of chemotherapy both in vitro and in vivo. CONCLUSIONS This study demonstrated that HLF can inhibit GBM cell growth, suggesting that this nontoxic substance may have a role in potentiating the effect of current TMZ treatment of GBM.
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Affiliation(s)
| | | | | | | | | | | | | | - Luigi Pavone
- IRCCS Neuromed, Località Camerelle, Pozzilli; and
| | - Felice Giangaspero
- IRCCS Neuromed, Località Camerelle, Pozzilli; and.,University of Rome La Sapienza, Rome, Italy
| | | | - Alessandro Frati
- IRCCS Neuromed, Località Camerelle, Pozzilli; and.,University of Rome La Sapienza, Rome, Italy
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11
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Gibbons JA, Kanwar JR, Kanwar RK. Iron-free and iron-saturated bovine lactoferrin inhibit survivin expression and differentially modulate apoptosis in breast cancer. BMC Cancer 2015; 15:425. [PMID: 25998617 PMCID: PMC4440599 DOI: 10.1186/s12885-015-1441-4] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 05/15/2015] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Iron binding, naturally occurring protein bovine lactoferrin (bLf) has attracted attention as a safe anti-cancer agent capable of inducing apoptosis. Naturally, bLf exists partially saturated (15-20%) with Fe(3+) however, it has been demonstrated that manipulating the saturation state can enhance bLf's anti-cancer activities. METHODS Apo-bLf (Fe(3+) free) and Fe-bLf (>90% Fe(3+) Saturated) were therefore, tested in MDA-MB-231 and MCF-7 human breast cancer cells in terms of cytotoxicity, proliferation, migration and invasion. Annexin-V Fluos staining was also employed in addition to apoptotic protein arrays and Western blotting to determine the specific mechanism of bLf-induced apoptosis with a key focus on p53 and inhibitor of apoptosis proteins (IAP), specifically survivin. RESULTS Apo-bLf induced significantly greater cytotoxicity and reduction in cell proliferation in both cancer cells showing a time and dose dependent effect. Importantly, no cytotoxicity was detected in normal MCF-10-2A cells. Both forms of bLf significantly reduced cell invasion in cancer cells. Key apoptotic molecules including p53, Bcl-2 family proteins, IAP members and their inhibitors were significantly modulated by both forms of bLf, though differentially in each cell line. Most interestingly, both Apo-bLf and Fe-bLf completely inhibited the expression of survivin protein (key IAP), after 48 h at 30 and 40 nM in cancer cells. CONCLUSIONS The capacity of these forms of bLf to target survivin expression and modulation of apoptosis demonstrates an exciting potential for bLf as an anti-cancer therapeutic in the existing void of survivin inhibitors, with a lack of successful inhibitors in the clinical management of cancer.
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Affiliation(s)
- Jessica A Gibbons
- Nanomedicine - Laboratory for Immunology and Molecular Biomedical Research, Molecular and Medical Research Facility, School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia.
| | - Jagat R Kanwar
- Nanomedicine - Laboratory for Immunology and Molecular Biomedical Research, Molecular and Medical Research Facility, School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia.
| | - Rupinder K Kanwar
- Nanomedicine - Laboratory for Immunology and Molecular Biomedical Research, Molecular and Medical Research Facility, School of Medicine, Faculty of Health, Deakin University, Geelong, Victoria, Australia.
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Delta-lactoferrin induces cell death via the mitochondrial death signaling pathway by upregulating bax expression. Biometals 2014; 27:875-89. [DOI: 10.1007/s10534-014-9744-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 04/23/2014] [Indexed: 10/25/2022]
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Kanwar JR, Mahidhara G, Kanwar RK. Novel alginate-enclosed chitosan-calcium phosphate-loaded iron-saturated bovine lactoferrin nanocarriers for oral delivery in colon cancer therapy. Nanomedicine (Lond) 2012; 7:1521-50. [PMID: 22734611 DOI: 10.2217/nnm.12.29] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM To develop polymeric-ceramic nanocarriers (NCs) in order to achieve oral delivery of the anticancer neutraceutical iron-saturated bovine lactoferrin (Fe-bLf) protein. MATERIALS & METHODS Fe-bLf or paclitaxel (Taxol®) were adsorbed onto calcium phosphate nanocores, enclosed in biodegradable polymers chitosan and alginate. The Fe-bLf or Taxol-loaded NCs indicated as AEC-CP-Fe-bLf or AEC-CP-Taxol NCs, respectively, were made by combination of ionic gelation and nanoprecipitation. Size distribution, morphology, internalization and release profiles of the NCs were studied along with evaluation of in vitro and in vivo anticancer activities and compared with paclitaxel. RESULTS AEC-CP-Fe-bLf NCs obtained spherical morphology and showed enhanced endocytosis, transcytosis and anticancer activity in Caco-2 cells in vitro. AEC-CP-Fe-bLf NCs were supplemented in an AIN 93G diet and fed to mice in both prevention and treatment human xenograft colon cancer models. AEC-CP-Fe-bLf NCs were found to be highly significantly effective when given orally, as a pretreatment, 1 week before Caco-2 cell injections. None of the mice from the AEC-CP-Fe-bLf NC-fed group developed tumors or showed any signs of toxicity, while the mice fed the control AIN 93G diet showed normal tumor growth. Fe-bLf or Taxol, when given orally in a diet as nanoformulations post-tumor development, showed a significant regression in the tumor size with complete inhibition of tumor growth later, while intratumoral injection of Taxol just delayed the growth of tumors. The pharmacokinetic and bioavailability studies indicated that nanoformulated Fe-bLf was predominantly present on tumor cells compared to non-nanoformulated Fe-bLf. Fe-bLf-loaded NCs were found to help in absorption of iron and thus may have utility in enhancing the iron uptake during iron deficiency without interfering with the absorption of calcium. CONCLUSION With the promising results of our study, the future potential of NC-loaded Fe-bLf in chemoprevention and in the treatment of human colon cancer, deserves further investigation for translational research and preclinical studies of other malignancies.
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Affiliation(s)
- Jagat R Kanwar
- Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research, Institute for Frontier Materials, Deakin University, Geelong Technology Precinct, Pigdons Road, Waurn Ponds, Geelong, Victoria 3216, Australia.
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Higa RA, Aydos RD, Silva IS, Ramalho RT, Souza ASD. Study of the antineoplastic action of Tabebuia avellanedae in carcinogenesis induced by azoxymethane in mice. Acta Cir Bras 2011; 26:125-8. [DOI: 10.1590/s0102-86502011000200009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Accepted: 12/14/2010] [Indexed: 11/22/2022] Open
Abstract
PURPOSE: To study the antitumor action of Tabebuia avellanedae in experimentally induced colon carcinogenesis by azoxymethane in mice. METHODS: Fifty (n=50) mice were divided into five groups: in group I azoxymethane (AOM) was administered, in Group II - β-lapachone, in group III - vehicle (diluent) and in group IV - vehicle + AOM and finally in group V - β-lapachone + AOM. RESULTS: It was observed the presence of aberrant crypt foci in all animals of groups I and IV, 50% in group II and 90% in group V. CONCLUSION: The β-lapachone extracted from the Tabebuia avellanedae showed no protective effect of lesions induced by azoxymethane in colon of mice.
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Liao Y, Du X, Lönnerdal B. miR-214 regulates lactoferrin expression and pro-apoptotic function in mammary epithelial cells. J Nutr 2010; 140:1552-6. [PMID: 20610637 DOI: 10.3945/jn.110.124289] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Lactoferrin (Lf) is an abundantly expressed protein in human milk. Lactoferrin exhibits several important biological functions, and its expression is regulated by multiple environmental factors. Cellular endogenous factors, however, have not been extensively studied with regard to lactoferrin gene expression. In this study, we showed that lactoferrin gene expression and function are directly targeted by miR-214 in HC11 and MCF7 cells. In the lactoferrin mRNA 3 prime untranslated region (UTR) of human, mouse, rat, pig, bovine, camel, and goat species, there is a conserved region that perfectly matches the seed region of miR-214. Transfection of miR-214 mimic in HEK293 cells dose-dependently inhibited the activity of pGL3-control vector containing lactoferrin mRNA 3 prime UTR downstream of the luciferase gene. In HC11 cells, miR-214 overexpression inhibited the induction of lactoferrin expression by beta -estradiol (E2) and dexamethasone-prolactin-insulin (DPI). Furthermore, in MCF7 cells, overexpression of miR-214 markedly decreased lactoferrin expression (P lt 0.05), and inhibition of endogenous miR-214 expression increased lactoferrin expression and cellular apoptotic activities (P lt 0.05). In summary, our data showed that miR-214 is directly involved in lactoferrin expression and lactoferrin mediated cancer susceptibility (proapoptotic activities) in mammary epithelial cells.
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Affiliation(s)
- Yalin Liao
- Department of Nutrition, University of California, Davis, CA 95616, USA
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Tsuda H, Kozu T, Iinuma G, Ohashi Y, Saito Y, Saito D, Akasu T, Alexander DB, Futakuchi M, Fukamachi K, Xu J, Kakizoe T, Iigo M. Cancer prevention by bovine lactoferrin: from animal studies to human trial. Biometals 2010; 23:399-409. [DOI: 10.1007/s10534-010-9331-3] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Accepted: 03/23/2010] [Indexed: 01/13/2023]
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Rodrigues L, Teixeira J, Schmitt F, Paulsson M, Månsson HL. Lactoferrin and cancer disease prevention. Crit Rev Food Sci Nutr 2009; 49:203-17. [PMID: 19093266 DOI: 10.1080/10408390701856157] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Lactoferrin (LF) is an iron-binding glycoprotein that is composed of the transferrin family and is predominantly found in the products of the exocrine glands located in the gateways of the digestive, respiratory, and reproductive systems, suggesting a role in the non-specific defence against invading pathogens. Additionally, several physiological roles have been attributed to LF, namely regulation of iron homeostasis, host defence against infection and inflammation, regulation of cellular growth, and differentiation and protection against cancer development and metastasis. These findings have suggested LF's great potential therapeutic use in cancer disease prevention and/or treatment, namely as a chemopreventive agent. This review looks at the recent advances in understanding the mechanisms underlying the multifunctional roles of LF and future perspectives on its potential therapeutic applications.
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Affiliation(s)
- Lígia Rodrigues
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Campus de Gualtar, 4710-057 Braga, Portugal.
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Chandra Mohan KVP, Kumaraguruparan R, Prathiba D, Nagini S. Modulation of xenobiotic-metabolizing enzymes and redox status during chemoprevention of hamster buccal carcinogenesis by bovine lactoferrin. Nutrition 2009; 22:940-6. [PMID: 16928475 DOI: 10.1016/j.nut.2006.05.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVE Chemoprevention by dietary constituents has emerged as a novel approach to control oral cancer incidence. We therefore evaluated the chemopreventive efficacy of bovine milk lactoferrin (bLF) on 7,12-dimethylbenz[a]anthracene (DMBA)-induced hamster buccal pouch (HBP) carcinogenesis. METHODS Hamsters were divided into four groups. The right buccal pouches of animals in groups 1 and 2 were painted with 0.5% DMBA three times a week for 14 wk. Animals in group 2, received in addition, basal diet containing 0.2% bLF. Group 3 animals were given 0.2% bLF alone. Group 4 animals served as control. The status of carcinogen-metabolizing enzymes, the extent of lipid peroxidation and glutathione-dependent antioxidants in the buccal pouch and liver as well as bone marrow micronuclei incidence were used as biomarkers. RESULTS All the hamsters painted with DMBA alone for 14 wk, developed HBP carcinomas that showed diminished lipid peroxidation and increased activities of carcinogen-metabolizing enzymes and antioxidants with enhanced bone marrow micronuclei. In the liver of tumor bearing animals, the increase in phase I enzymes and lipid peroxidation was accompanied by reduced activities of antioxidant and phase II detoxification enzymes. Administration of bLF decreased the incidence of DMBA-induced micronuclei and HBP carcinomas by decreasing phase I enzymes, modulating lipid peroxidation and enhancing antioxidant and phase II enzyme activities. CONCLUSION The chemopreventive effects of bLF is mediated by reducing DMBA-induced genotoxicity and modulating carcinogen-metabolizing enzymes and oxidant-antioxidant profile in the target organ as well as in the liver.
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Lactoferrin Structure and Functions. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2007; 606:163-94. [DOI: 10.1007/978-0-387-74087-4_6] [Citation(s) in RCA: 167] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Spagnuolo PA, Bird RP, Hoffman-Goetz L. Effect of short-term dietary intake of bovine lactoferrin on intestinal lymphocyte apoptosis in healthy mice. Nutrition 2007; 23:812-7. [PMID: 17826956 DOI: 10.1016/j.nut.2007.07.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2007] [Revised: 07/26/2007] [Accepted: 07/27/2007] [Indexed: 10/22/2022]
Abstract
OBJECTIVE The objective of this study was to describe the effects of short-term dietary exposure of bovine lactoferrin (Lf) on intestinal lymphocyte apoptosis and expression of tumor necrosis factor-alpha (TNF-alpha) in healthy mice. METHODS Female C57BL/6 mice were randomly assigned to three treatment groups: 0% Lf (n = 16), 0.2% Lf (n = 16), and 2.0% Lf (n = 15). Bovine Lf was administered orally, as part of the diet, for 4 consecutive days. Intestinal lymphocytes (ILs) were isolated and analyzed for percentages of CD4, CD8, apoptotic CD4, and apoptotic CD8 cells using flow cytometry. Pro- (caspase-3) and anti- (Bcl-2) apoptotic protein expressions and TNF-alpha expression in ILs were determined by Western blotting. RESULTS There were significant increases in the percentages of CD4 (P = 0.02) and apoptotic CD4 (P = 0.02) ILs in bovine Lf-fed compared with control mice. Percentages of CD8 and apoptotic CD8 cells and expression of caspase-3 and Bcl-2 in ILs did not differ significantly by diet group. In contrast, the expression of TNF-alpha was significantly lower in Lf-fed versus control mice (P = 0.01). CONCLUSION Short-term dietary Lf decreased TNF-alpha expression in ILs and increased apoptosis of CD4 ILs in healthy mice.
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Affiliation(s)
- Paul A Spagnuolo
- Department of Health Studies and Gerontology, Faculty of Applied Health Sciences, University of Waterloo, Waterloo, Ontario, Canada
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Mariller C, Benaïssa M, Hardivillé S, Breton M, Pradelle G, Mazurier J, Pierce A. Human delta-lactoferrin is a transcription factor that enhances Skp1 (S-phase kinase-associated protein) gene expression. FEBS J 2007; 274:2038-53. [PMID: 17371504 DOI: 10.1111/j.1742-4658.2007.05747.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Delta-lactoferrin is a cytoplasmic lactoferrin isoform that can locate to the nucleus, provoking antiproliferative effects and cell cycle arrest in S phase. Using macroarrays, the expression of genes involved in the G(1)/S transition was examined. Among these, Skp1 showed 2-3-fold increased expression at both the mRNA and protein levels. Skp1 (S-phase kinase-associated protein) belongs to the Skp1/Cullin-1/F-box ubiquitin ligase complex responsible for the ubiquitination of cellular regulators leading to their proteolysis. Skp1 overexpression was also found after delta-lactoferrin transient transfection in other cell lines (HeLa, MDA-MB-231, HEK 293) at comparable levels. Analysis of the Skp1 promoter detected two sequences that were 90% identical to those previously known to interact with lactoferrin, the secretory isoform of delta-lactoferrin (GGCACTGTAC-S1(Skp1), located at - 1067 bp, and TAGAAGTCAA-S2(Skp1), at - 646 bp). Both gel shift and chromatin immunoprecipitation assays demonstrated that delta-lactoferrin interacts in vitro and in vivo specifically with these sequences. Reporter gene analysis confirmed that delta-lactoferrin recognizes both sequences within the Skp1 promoter, with a higher activity on S1(Skp1). Deletion of both sequences totally abolished delta-lactoferrin transcriptional activity, identifying them as delta-lactoferrin-responsive elements. Delta-lactoferrin enters the nucleus via a short bipartite RRSDTSLTWNSVKGKK(417-432) nuclear localization signal sequence, which was demonstrated to be functional using mutants. Our results show that delta-lactoferrin binds to the Skp1 promoter at two different sites, and that these interactions lead to its transcriptional activation. By increasing Skp1 gene expression, delta-lactoferrin may regulate cell cycle progression via control of the proteasomal degradation of S-phase actors.
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Affiliation(s)
- Christophe Mariller
- Unité de Glycobiologie Structurale et Fonctionnelle, Unité Mixte de Recherche 8576 CNRS-Université des Sciences et Technologies de Lille1, Villeneuve d'Ascq, France
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Grey A, Zhu Q, Watson M, Callon K, Cornish J. Lactoferrin potently inhibits osteoblast apoptosis, via an LRP1-independent pathway. Mol Cell Endocrinol 2006; 251:96-102. [PMID: 16650524 DOI: 10.1016/j.mce.2006.03.002] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2005] [Revised: 02/14/2006] [Accepted: 03/07/2006] [Indexed: 11/29/2022]
Abstract
Lactoferrin induces osteoblast proliferation in vitro and is anabolic to bone in vivo. We recently reported that the low-density lipoprotein-receptor-related protein 1 (LRP1), a multifunctional member of the LDL receptor family, transduces the mitogenic signal activated by lactoferrin. Here we investigate the effects of lactoferrin on osteoblast survival. At periphysiological concentrations (1-10mug/ml), lactoferrin protects both primary rat osteoblastic cells and SaOS2 cells from apoptosis induced by serum withdrawal. Surprisingly, this effect was not sensitive to the LRP1/2 inhibitor receptor-associated protein (RAP). Neither did lactoferrin selectively prevent apoptosis in fibroblastic cells expressing wild-type LRP1 compared to LRP1-null fibroblasts. Lactoferrin activates PI3 kinase-dependent Akt signaling in osteoblasts but this effect is neither LRP1-dependent nor required for lactoferrin-induced cell survival. Lactoferrin activates p42/44 MAPK signaling, but inhibiting this process does not abrogate its pro-survival actions. These results demonstrate that lactoferrin promotes osteoblast survival, an effect that may contribute to its anabolic skeletal actions in vivo. Our data also suggest that the molecular mechanisms that underpin the ability of lactoferrin to promote cell survival differ fundamentally from those which subserve its mitogenic actions, in particular being mediated by a distinct cell-membrane-based receptor.
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Affiliation(s)
- Andrew Grey
- Department of Medicine, University of Auckland, Private Bag 92019, Auckland, New Zealand.
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Matsuda Y, Saoo K, Hosokawa K, Yamakawa K, Yokohira M, Zeng Y, Takeuchi H, Imaida K. Post-initiation chemopreventive effects of dietary bovine lactoferrin on 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone-induced lung tumorigenesis in female A/J mice. Cancer Lett 2006; 246:41-6. [PMID: 16530328 DOI: 10.1016/j.canlet.2006.01.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2005] [Revised: 01/23/2006] [Accepted: 01/25/2006] [Indexed: 11/19/2022]
Abstract
We investigated the effects of bovine LF (bLF) on different phases of NNK-induced lung tumorigenesis in A/J mice. Mice were orally administered 0.02, 0.2 and 2% bLF during the initiation phase, and 2% bLF during the whole tumorigenesis phase or post-initiation phase. Administered bLF during the post-initiation phase showed significant reduction of macroscopical lung nodules, and immunohistochemically decreased expression levels of cell proliferation marker and increased expression levels of apoptosis marker in lung proliferative lesions. bLF might inhibit NNK-induced mouse lung tumorigenesis, only when given limited to the post-initiation phase, through modification of cell proliferation and/or apoptosis.
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Affiliation(s)
- Yoko Matsuda
- Department of Pathology and Host-Defense, Faculty of Medicine, Onco-Pathology, Kagawa University, 1750-1 Ikenobe, Kida-Gun, Kagawa, Japan
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