1
|
Mao R, Ma X, Hao Y, Pen G, Zheng X, Yang N, Teng D, Wang J. Perspective: A proposal on solutions of modern supply chain construction for lactoferrin. J Dairy Sci 2023; 106:7329-7335. [PMID: 37641347 DOI: 10.3168/jds.2023-23328] [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: 02/03/2023] [Accepted: 06/01/2023] [Indexed: 08/31/2023]
Abstract
Lactoferrin is an iron-binding glycoprotein of the transferrin family that is found in most bodily fluids of mammals and has a variety of biological and beneficial functions, with great importance in health enhancement as a supplement for humans and other animals. More than 300 t of lactoferrin were produced in 2021, and this number is expected to grow yearly by 10% to 12%, to over 580 t in 2030. With new and important functions of lactoferrin being revealed and studied, focus on its industrial production and application is increasing accordingly. However, lactoferrin is mainly sourced from cheese whey or skim milk by cation-exchange column chromatography, which is a costly and low-quality method. A potential solution for lactoferrin global supply chain construction is proposed in this article as a complement to traditional routes of purification from whey or skim milk. The large-scale production of lactoferrin, mainly by recombinant yeast, mammal, and grain systems, as well as the market niche and product design, are discussed.
Collapse
Affiliation(s)
- Ruoyu Mao
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; R&D Center, Beijing Shengtai Clouds Bio-Technology Inc., Beijing 100081, China
| | - Xuanxuan Ma
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Ya Hao
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; R&D Center, Beijing Shengtai Clouds Bio-Technology Inc., Beijing 100081, China
| | - Guihong Pen
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xueling Zheng
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Na Yang
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; R&D Center, Beijing Shengtai Clouds Bio-Technology Inc., Beijing 100081, China
| | - Da Teng
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; R&D Center, Beijing Shengtai Clouds Bio-Technology Inc., Beijing 100081, China
| | - Jianhua Wang
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China; Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China; R&D Center, Beijing Shengtai Clouds Bio-Technology Inc., Beijing 100081, China.
| |
Collapse
|
2
|
Dupuis JH, Cheung LKY, Newman L, Dee DR, Yada RY. Precision cellular agriculture: The future role of recombinantly expressed protein as food. Compr Rev Food Sci Food Saf 2023; 22:882-912. [PMID: 36546356 DOI: 10.1111/1541-4337.13094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 11/16/2022] [Accepted: 11/27/2022] [Indexed: 12/24/2022]
Abstract
Cellular agriculture is a rapidly emerging field, within which cultured meat has attracted the majority of media attention in recent years. An equally promising area of cellular agriculture, and one that has produced far more actual food ingredients that have been incorporated into commercially available products, is the use of cellular hosts to produce soluble proteins, herein referred to as precision cellular agriculture (PCAg). In PCAg, specific animal- or plant-sourced proteins are expressed recombinantly in unicellular hosts-the majority of which are yeast-and harvested for food use. The numerous advantages of PCAg over traditional agriculture, including a smaller carbon footprint and more consistent products, have led to extensive research on its utility. This review is the first to survey proteins currently being expressed using PCAg for food purposes. A growing number of viable expression hosts and recent advances for increased protein yields and process optimization have led to its application for producing milk, egg, and muscle proteins; plant hemoglobin; sweet-tasting plant proteins; and ice-binding proteins. Current knowledge gaps present research opportunities for optimizing expression hosts, tailoring posttranslational modifications, and expanding the scope of proteins produced. Considerations for the expansion of PCAg and its implications on food regulation, society, ethics, and the environment are also discussed. Considering the current trajectory of PCAg, food proteins from any biological source can likely be expressed recombinantly and used as purified food ingredients to create novel and tailored food products.
Collapse
Affiliation(s)
- John H Dupuis
- Faculty of Land and Food Systems, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Lennie K Y Cheung
- Faculty of Land and Food Systems, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Lenore Newman
- Food and Agriculture Institute, University of the Fraser Valley, Abbotsford, British Columbia, Canada
| | - Derek R Dee
- Faculty of Land and Food Systems, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Rickey Y Yada
- Faculty of Land and Food Systems, The University of British Columbia, Vancouver, British Columbia, Canada
| |
Collapse
|
3
|
Cutone A, Ianiro G, Lepanto MS, Rosa L, Valenti P, Bonaccorsi di Patti MC, Musci G. Lactoferrin in the Prevention and Treatment of Intestinal Inflammatory Pathologies Associated with Colorectal Cancer Development. Cancers (Basel) 2020; 12:E3806. [PMID: 33348646 PMCID: PMC7766217 DOI: 10.3390/cancers12123806] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/15/2020] [Accepted: 12/15/2020] [Indexed: 12/20/2022] Open
Abstract
The connection between inflammation and cancer is well-established and supported by genetic, pharmacological and epidemiological data. The inflammatory bowel diseases (IBDs), including Crohn's disease and ulcerative colitis, have been described as important promoters for colorectal cancer development. Risk factors include environmental and food-borne mutagens, dysbalance of intestinal microbiome composition and chronic intestinal inflammation, with loss of intestinal epithelial barrier and enhanced cell proliferation rate. Therapies aimed at shutting down mucosal inflammatory response represent the foundation for IBDs treatment. However, when applied for long periods, they can alter the immune system and promote microbiome dysbiosis and carcinogenesis. Therefore, it is imperative to find new safe substances acting as both potent anti-inflammatory and anti-pathogen agents. Lactoferrin (Lf), an iron-binding glycoprotein essential in innate immunity, is generally recognized as safe and used as food supplement due to its multifunctionality. Lf possesses a wide range of immunomodulatory and anti-inflammatory properties against different aseptic and septic inflammatory pathologies, including IBDs. Moreover, Lf exerts anti-adhesive, anti-invasive and anti-survival activities against several microbial pathogens that colonize intestinal mucosa of IBDs patients. This review focuses on those activities of Lf potentially useful for the prevention/treatment of intestinal inflammatory pathologies associated with colorectal cancer development.
Collapse
Affiliation(s)
- Antimo Cutone
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (A.C.); (G.I.)
| | - Giusi Ianiro
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (A.C.); (G.I.)
| | - Maria Stefania Lepanto
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (M.S.L.); (L.R.); (P.V.)
| | - Luigi Rosa
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (M.S.L.); (L.R.); (P.V.)
| | - Piera Valenti
- Department of Public Health and Infectious Diseases, University of Rome La Sapienza, 00185 Rome, Italy; (M.S.L.); (L.R.); (P.V.)
| | | | - Giovanni Musci
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy; (A.C.); (G.I.)
| |
Collapse
|
4
|
Lee BC, Hung CW, Lin CY, Shih CH, Tsai HJ. Oral administration of transgenic biosafe microorganism containing antimicrobial peptide enhances the survival of tilapia fry infected bacterial pathogen. FISH & SHELLFISH IMMUNOLOGY 2019; 95:606-616. [PMID: 31682999 DOI: 10.1016/j.fsi.2019.10.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/16/2019] [Accepted: 10/27/2019] [Indexed: 06/10/2023]
Abstract
To develop an alternative to conventional antibiotics used in the aquaculture and livestock industries, we employed Bacillus subtilis, considered a biosafe microorganism, to express the degradable antimicrobial peptide lactoferricin. An expression plasmid pP43-6LFBII-GFP, in which reporter GFP cDNA was fused downstream of lactoferricin cDNA driven by an endogenous constitutive P43 promoter was electroporated into B. subtilis, followed by regeneration and cultivation. The putative colonies harboring plasmids were primarily screened by PCR-amplification of lactoferricin cDNA. Four transformants which were stable inheritance of plasmid containing lactoferricin cDNA included strains T1, T4, T7 and T13. Based on Western blot and Southern blot analyses, we found that transgenic strains T1 and T13 not only highly expressed exogenous recombinant lactoferricin, but also exhibited more stable inheritance of plasmids with 931 and 647 copies per cell, respectively. In the antibacterial in vitro experiment, the bactericidal activity of each microliter of cell lysate from transgenic strains T1 and T13 (5 × 108 CFU) for Escherichia coli was equivalent to 56 and 53 ng of Ampicillin dosage, respectively, while for Staphylococcus epidermidis, the equivalency T1 and T13 was 154 and 130 ng of Ampicillin dosage, respectively. Equivalencies of bacterial activity for Vibrio parahaemolyticus and Edwardsiella tarda followed suit. In the antibacterial in vivo experiment, we oral-in-tube fed tilapia fry (Oreochromis mossambicus X O. niloticus) with cell lysate from transgenic strain T1 and T13 individually. After 1-h of incubation, we immersed these treated fish fry in a water tank containing E. tarda (5 × 1011 CFU) for a 5-hr bacterial challenge. After one month cultivation, an average survival rate of 63 and 67% was observed after having fed the fish fry with transgenic strains T1 and T13, respectively. However, the average survival rate of fish fry fed with B. subtilis WT strain and transgenic strain T19 without expressing recombinant lactoferricin reached only 5 and 9%, respectively. These data indicate that the survival of fish fry infected by the intestinal pathogen tested could be significantly enhanced by feeding transgenic B. subtilis containing antibacterial peptide. Therefore, we suggest that this strategy could be applied to both aquaculture and livestock industries to (i) reduce the dependency on conventional antibiotics during seasonal outbreaks and (ii) eliminate the problem of antibiotic resistance.
Collapse
Affiliation(s)
- Bing-Chang Lee
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan, ROC
| | - Chun-Wei Hung
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, Taiwan, ROC
| | - Cheng-Yung Lin
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan, ROC
| | - Chen-Han Shih
- Department of Biosystems Engineering, The University of Arizona, Tucson, AZ, USA
| | - Huai-Jen Tsai
- Institute of Biomedical Sciences, Mackay Medical College, New Taipei City, Taiwan, ROC.
| |
Collapse
|
5
|
Recombinant porcine myostatin propeptide generated by the Pichia pastoris elevates myoblast growth and ameliorates high-fat diet-induced glucose intolerance. Res Vet Sci 2019; 124:200-211. [PMID: 30921567 DOI: 10.1016/j.rvsc.2019.03.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 02/12/2019] [Accepted: 03/12/2019] [Indexed: 01/07/2023]
Abstract
Myostatin (MSTN) was identified as a negative regulator of skeletal muscle growth. MSTN inhibition by myostatin propeptide (MSPP) increased skeletal muscle mass, myofiber growth and muscle force. Thus, this study was designed to produce wild-type porcine MSPP (WT-MSPP) and its mutated form (D75A-MSPP) in yeast Pichia pastoris and to investigate its potential enhancement of myoblast growth and differentiation. In an in vitro study, C2C12 myoblasts were treated with the purified WT-MSPP or D75A-MSPP (10 μg/mL) in either a regular culture medium or in a differentiation medium for 72 h. In an animal trial, post-weaning C57BL/6 mice fed with a high-fat diet (HFD) were administered WT-MSPP or D75A-MSPP for 6 weeks. The results showed that C2C12 myoblasts treated with the purified WT-MSPP or D75A-MSPP could dramatically promote cell proliferation. Both myoD and myogenin were significantly increased (p < .05) after WT-MSPP or D75A-MSPP treatment. D75A-MSPP was particularly more effective than WT-MSPP in promoting myotube formation (p < .05). The post-weaning mice treated with D75A-MSPP significantly increased both body and muscle weights compared with the mock and WT-MSPP groups (p < .05). Furthermore, the mice treatment with D75A-MSPP could prevent increased glucose injection from inducing glucose elevation. Our data indicated that a mutant-type MSPP (D75A-MSPP) was superior to WT-MSPP in effectively enhancing myofiber growth due to the highly resistant to proteolytic cleavage by the bone morphogenetic protein-1/tolloid (BMP-1/TLD) and thus has potential applications for clinical muscle wasting diseases or for increasing muscle mass in meat-producing animals.
Collapse
|
6
|
Aerosolized bovine lactoferrin reduces lung injury and fibrosis in mice exposed to hyperoxia. Biometals 2014; 27:1057-68. [PMID: 24842100 DOI: 10.1007/s10534-014-9750-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 05/05/2014] [Indexed: 12/28/2022]
Abstract
This study investigated the ability of aerosolized bovine lactoferrin (bLF) to protect the lungs from injury induced by chronic hyperoxia. Female CD-1 mice were exposed to hyperoxia (FiO2 = 80 %) for 7 days to induce lung injury and fibrosis. The therapeutic effects of bLF, administered via an aerosol delivery system, on the chronic lung injury induced by this period of hyperoxia were measured by bronchoalveolar lavage, lung histology, cell apoptosis, and inflammatory cytokines in the lung tissues. After exposure to hyperoxia for 7 days, the survival of the mice was significantly decreased to 20 %. The protective effects of bLF against hyperoxia were further confirmed by significant reductions in lung edema, total cell numbers in bronchoalveolar lavage fluid, inflammatory cytokines (IL-1β and IL-6), pulmonary fibrosis, and apoptotic DNA fragmentation. The aerosolized bLF protected the mice from oxygen toxicity and increased the survival fraction to 66.7 % in the hyperoxic model. The results support the use of an aerosol therapy with bLF in intensive care units to reduce oxidative injury in patients with severe hypoxemic respiratory failure or chronic obstructive pulmonary disease.
Collapse
|
7
|
Yen CC, Lai YW, Chen HL, Lai CW, Lin CY, Chen W, Kuan YP, Hsu WH, Chen CM. Aerosolized human extracellular superoxide dismutase prevents hyperoxia-induced lung injury. PLoS One 2011; 6:e26870. [PMID: 22046389 PMCID: PMC3202580 DOI: 10.1371/journal.pone.0026870] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Accepted: 10/05/2011] [Indexed: 12/15/2022] Open
Abstract
An important issue in critical care medicine is the identification of ways to protect the lungs from oxygen toxicity and reduce systemic oxidative stress in conditions requiring mechanical ventilation and high levels of oxygen. One way to prevent oxygen toxicity is to augment antioxidant enzyme activity in the respiratory system. The current study investigated the ability of aerosolized extracellular superoxide dismutase (EC-SOD) to protect the lungs from hyperoxic injury. Recombinant human EC-SOD (rhEC-SOD) was produced from a synthetic cassette constructed in the methylotrophic yeast Pichia pastoris. Female CD-1 mice were exposed in hyperoxia (FiO2>95%) to induce lung injury. The therapeutic effects of EC-SOD and copper-zinc SOD (CuZn-SOD) via an aerosol delivery system for lung injury and systemic oxidative stress at 24, 48, 72 and 96 h of hyperoxia were measured by bronchoalveolar lavage, wet/dry ratio, lung histology, and 8-oxo-2'-deoxyguanosine (8-oxo-dG) in lung and liver tissues. After exposure to hyperoxia, the wet/dry weight ratio remained stable before day 2 but increased significantly after day 3. The levels of oxidative biomarker 8-oxo-dG in the lung and liver were significantly decreased on day 2 (P<0.01) but the marker in the liver increased abruptly after day 3 of hyperoxia when the mortality increased. Treatment with aerosolized rhEC-SOD increased the survival rate at day 3 under hyperoxia to 95.8%, which was significantly higher than that of the control group (57.1%), albumin treated group (33.3%), and CuZn-SOD treated group (75%). The protective effects of EC-SOD against hyperoxia were further confirmed by reduced lung edema and systemic oxidative stress. Aerosolized EC-SOD protected mice against oxygen toxicity and reduced mortality in a hyperoxic model. The results encourage the use of an aerosol therapy with EC-SOD in intensive care units to reduce oxidative injury in patients with severe hypoxemic respiratory failure, including acute respiratory distress syndrome (ARDS).
Collapse
Affiliation(s)
- Chih-Ching Yen
- Department of Life Sciences, and Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
- College of Health Care, China Medical University, Taichung, Taiwan
| | - Yi-Wen Lai
- Department of Life Sciences, and Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Hsiao-Ling Chen
- Department of Bioresources, Da-Yeh University, Changhwa, Taiwan
| | - Cheng-Wei Lai
- Department of Life Sciences, and Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Chien-Yu Lin
- Department of Life Sciences, and Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Wei Chen
- Department of Life Sciences, and Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- Department of Internal Medicine, Chia-Yi Christian Hospital, Chia-Yi, Taiwan
| | - Yu-Ping Kuan
- Department of Life Sciences, and Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Wu-Huei Hsu
- Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Chuan-Mu Chen
- Department of Life Sciences, and Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- School of Chinese Medicine, China Medical University, Taichung, Taiwan
- * E-mail:
| |
Collapse
|
8
|
Lactoferrin: an iron-binding antimicrobial protein against Escherichia coli infection. Biometals 2011; 24:585-94. [DOI: 10.1007/s10534-011-9423-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Accepted: 02/08/2011] [Indexed: 01/18/2023]
|
9
|
Hung CM, Yeh CC, Chong KY, Chen HL, Chen JY, Kao ST, Yen CC, Yeh MH, Lin MS, Chen CM. Gingyo-san enhances immunity and potentiates infectious bursal disease vaccination. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2010; 2011:238208. [PMID: 19307173 PMCID: PMC3095499 DOI: 10.1093/ecam/nep021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2008] [Accepted: 01/28/2009] [Indexed: 01/22/2023]
Abstract
The purpose of the present study was to investigate the effects of Gingyo-san (GGS), a traditional Chinese medical formula, on peripheral lymphocyte proliferation and serum antibody titers in chickens vaccinated against the infectious bursal disease (IBD) virus. Treatment groups were fed one of three doses of GGS in their diet (0.5%, 1.0% and 2.0%, w/w), and the IBD vaccine was administered at 1 and 3 weeks of age. At Weeks 8, 12 and 16, changes in serum IBD antibody titers were measured via the micro-method and T cell proliferation. In gene expression experiments, GGS-treated peripheral T lymphocytes were stimulated with concanavalin A (ConA) for 24 h. The mRNA expression of interleukin-2 (IL-2), interferon-γ (IFN-γ), interleukin-4 (IL-4) and interleukin-12 (IL-12) was determined using a semi-quantitative RT-PCR assay. The results showed that a low dose of GGS could significantly raise the antibody titers. Medium and high doses of GGS enhanced IL-2 and IFN-γ production. GGS altered the expression of IL-4 and IL-12 in T lymphocytes. CD4+ T lymphocyte development was also skewed towards the Th1 phenotype. GGS enhanced cell-mediated immunity and augmented the effects of IBD vaccination in strengthening subsequent anti-viral responses.
Collapse
Affiliation(s)
- Che-Ming Hung
- Animal Industry Division, Livestock Research Institute, Council of Agriculture, Tainan 712, Taiwan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Hung CM, Yeh CC, Chen HL, Lai CW, Kuo MF, Yeh MH, Lin W, Tu MY, Cheng HC, Chen CM. Porcine lactoferrin administration enhances peripheral lymphocyte proliferation and assists infectious bursal disease vaccination in native chickens. Vaccine 2010; 28:2895-902. [DOI: 10.1016/j.vaccine.2010.01.066] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2009] [Revised: 01/22/2010] [Accepted: 01/28/2010] [Indexed: 11/29/2022]
|
11
|
Hung CM, Wu SC, Yen CC, Lin MF, Lai YW, Tung YT, Chen HL, Chen CM. Porcine lactoferrin as feedstuff additive elevates avian immunity and potentiates vaccination. Biometals 2010; 23:579-87. [DOI: 10.1007/s10534-010-9321-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Accepted: 03/02/2010] [Indexed: 11/30/2022]
|
12
|
Probiotic Lactobacillus casei Expressing Human Lactoferrin Elevates Antibacterial Activity in the Gastrointestinal Tract. Biometals 2010; 23:543-54. [DOI: 10.1007/s10534-010-9298-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Accepted: 01/25/2010] [Indexed: 01/02/2023]
|
13
|
Bai X, Teng D, Tian Z, Zhu Y, Yang Y, Wang J. Contribution of bovine lactoferrin inter-lobe region to iron binding stability and antimicrobial activity against Staphylococcus aureus. Biometals 2010; 23:431-9. [PMID: 20145976 DOI: 10.1007/s10534-010-9300-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2010] [Accepted: 01/31/2010] [Indexed: 10/19/2022]
Abstract
The investigation of the recombinant bovine lactoferrin-derived antimicrobial protein (rBLfA) demonstrates that the inter-lobe region of bovine lactoferrin contributes to iron binding stability and antimicrobial activity against Staphylococcus aureus. rBLfA containing N-lobe (amino acid residues 1-333) and inter-lobe region (residues 334-344) was expressed in Pichia pastoris at shaking flask and fermentor level. The recombinant intact bovine lactoferrin (rBLf) and N-lobe (rBLfN) were expressed in the same system as control. The physical-chemical parameters of rBLfA, rBLfN and rBLf including amino acid residues, molecular weight, isoelectric point, net positive charge and instability index were computed and compared. The simulated tertiary structure and the calculated surface net charge showed that rBLfA maintained original structure and exhibited a higher cationic feature than rBLf and rBLfN. The three proteins showed different iron binding stability and antimicrobial activity. rBLfA released iron in the pH range of 7.0-3.5, whereas rBLfN lost its iron over the pH range of 7.0-4.0 and iron release from rBLf occurred in the pH range of 5.5-3.0. However, the minimum inhibition concentration of rBLfA against S. aureus ATCC25923 was 6.5 micromol/L, compared with 12.5 and 25 micromol/L that of rBLfN and rBLf, respectively. These results revealed that S. aureus was more sensitive to rBLfA than rBLfN and rBLf. It appeared that the strong cationic character of inter-lobe region related positively to the higher anti-S. aureus activity.
Collapse
Affiliation(s)
- Xuejing Bai
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture, 100081 Beijing, People's Republic of China
| | | | | | | | | | | |
Collapse
|
14
|
Yen CC, Lin CY, Chong KY, Tsai TC, Shen CJ, Lin MF, Su CY, Chen HL, Chen CM. Lactoferrin as a natural regimen for selective decontamination of the digestive tract: recombinant porcine lactoferrin expressed in the milk of transgenic mice protects neonates from pathogenic challenge in the gastrointestinal tract. J Infect Dis 2009; 199:590-8. [PMID: 19125673 DOI: 10.1086/596212] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Nosocomial infection with antibiotic-resistant strains is a major threat to critical care medicine. Selective decontamination of the digestive tract (SDD) is one of the strategies used to reduce ventilator-associated pneumonia and sepsis in critically ill patients. In the present study, we performed pathogenic challenges of the digestive tract in a transgenic milk-fed animal model to test whether porcine lactoferrin (pLF) is an effective SDD regimen. METHODS Transgenic mice expressing recombinant pLF in their milk at a mean+/-SD concentration of 120+/-13.6 mg/L during the lactation stage fed normal CD-1 mice pups for 4 weeks. The pups were subsequently challenged with pathogenic Escherichia coli, Staphylococcus aureus, and Candida albicans. RESULTS Compared with the control groups fed wild-type (normal) milk, the groups fed pLF-enriched milk demonstrated statistically significant improvements in weight gain; lower bacterial numbers in intestinal fluid, blood, and liver; healthier microvilli in the small intestine; and alveoli in the lungs. CONCLUSIONS Our results showed that oral administration of pLF-enriched milk to mice led to broad-spectrum antimicrobial activity in the digestive tract and protected the mucosa of the small intestine from injury, implying that pLF can be used as an effective SDD regimen.
Collapse
Affiliation(s)
- Chih-Ching Yen
- Department of Life Sciences, National Chung Hsing University, China Medical University Hospital, Taichung, Taiwan
| | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Production of recombinant human lactoferrin in the allantoic fluid of embryonated chicken eggs and its characteristics. Protein Expr Purif 2009; 65:100-7. [PMID: 19174190 DOI: 10.1016/j.pep.2009.01.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 12/23/2008] [Accepted: 01/06/2009] [Indexed: 11/22/2022]
Abstract
The human iron-binding protein lactoferrin (hLf) has been implicated in a number of important physiological pathways, including those regulating immune function and tumor growth. In an effort to develop an efficient system for production of recombinant hLf (rhLf) that is structurally and functionally equivalent to the natural protein, we generated a recombinant CELO (chicken embryo lethal orphan) avian adenovirus containing an expression cassette for hLf. Embryonated chicken eggs were infected with the generated CELO-Lf virus. rhLf expression was measured in the allantoic fluid of infected eggs by ELISA three days later. The level of recombinant protein was about 0.8mg per embryo. rhLf was efficiently purified (up to 85% yield) from the allantoic fluid of infected eggs using affinity chromatography. rhLf produced in the allantoic fluid was characterized in comparison with natural hLf (nhLf) purified from human breast milk. SDS-PAGE, Western blotting and glycosylation analyzes showed that the recombinant protein had similar physical characteristics to nhLf. In addition, we demonstrated that the antioxidative and antimicrobial activity of rhLf produced in this system is equivalent to that of nhLf. Taken together, these results illustrate the utility of the described "recombinant CELO adenovirus-chicken embryo" system for production of functionally active rhLf. Efficient production of rhLf with accurate structure and function is an important step in furthering investigation of Lf as a potential human drug.
Collapse
|
16
|
Liu FC, Chen HL, Chong KY, Hsu AL, Chen CM. Production of recombinant porcine colipase secreted byPichia pastorisand its application to improve dietary fat digestion and growth of postweaning piglets. Biotechnol Prog 2008; 24:1333-41. [DOI: 10.1002/btpr.46] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
17
|
Chen HL, Huang JY, Chu TW, Tsai TC, Hung CM, Lin CC, Liu FC, Wang LC, Chen YJ, Lin MF, Chen CM. Expression of VP1 protein in the milk of transgenic mice: a potential oral vaccine protects against enterovirus 71 infection. Vaccine 2008; 26:2882-9. [PMID: 18450335 DOI: 10.1016/j.vaccine.2008.03.041] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2007] [Revised: 02/17/2008] [Accepted: 03/20/2008] [Indexed: 12/17/2022]
Abstract
Enterovirus 71 (EV71) is the most common etiological agent detected in cases of hand-foot-and-mouth disease (HFMD) resulting in incidences of neurological complications and fatality in recent years. The clinical data have already shown the significant increase in recent EV71 epidemic activity throughout the Asia-Pacific region. Due to the lack of an effective antiviral agent, primary prevention of the disease, including the development of an effective vaccine, has been the top priority in terms of control strategies. In this study, we first generated a transgenic animal system to produce the EV71 VP1 capsid protein under the control of alpha-lactalbumin promoter and alpha-casein leader sequences. A high level of recombinant VP1 protein (2.51 mg/ml) was expressed and secreted into the milk of transgenic mice. Mouse pups that received VP1-transgenic milk orally demonstrated relatively better health conditions after challenge with the respective virus as compared with the non-transgenic milk fed group; moreover, the mice fed with the VP1-milk had body weights similar to those of the PBS placebo control groups. According to the serum-neutralization assay and serum antibody detection, the littermates suckling VP1-milk generated antibodies specific to EV71. Our data suggest that EV71 VP1-containing milk is suitable for development as a potential oral vaccine.
Collapse
MESH Headings
- Administration, Oral
- Aging/immunology
- Animals
- Antibodies, Viral/analysis
- Antibodies, Viral/biosynthesis
- Capsid Proteins/genetics
- Capsid Proteins/immunology
- Child, Preschool
- DNA, Complementary/biosynthesis
- DNA, Complementary/genetics
- Enterovirus A, Human/immunology
- Enterovirus Infections/immunology
- Enterovirus Infections/prevention & control
- Enzyme-Linked Immunosorbent Assay
- Female
- Genotype
- Humans
- Immunoblotting
- Lactalbumin/genetics
- Mice
- Mice, Inbred ICR
- Mice, Transgenic
- Milk/chemistry
- Neutralization Tests
- Promoter Regions, Genetic/genetics
- Viral Fusion Proteins/genetics
- Viral Vaccines/administration & dosage
- Viral Vaccines/genetics
- Viral Vaccines/therapeutic use
Collapse
Affiliation(s)
- Hsiao-Ling Chen
- Department of Molecular Biotechnology, Da-Yeh University, Changhwa 51501, Taiwan
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Chen HL, Wang LC, Chang CH, Yen CC, Cheng WT, Wu SC, Hung CM, Kuo MF, Chen CM. Recombinant porcine lactoferrin expressed in the milk of transgenic mice protects neonatal mice from a lethal challenge with enterovirus type 71. Vaccine 2008; 26:891-8. [DOI: 10.1016/j.vaccine.2007.12.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2007] [Revised: 11/28/2007] [Accepted: 12/13/2007] [Indexed: 11/24/2022]
|