1
|
Arini APK, Namangkalakul W, Limraksasin P, Osathanon T. Effects of lactalbumin enzymatic hydrolysate on human squamous cell carcinoma cells-an in vitro study. J Oral Biol Craniofac Res 2024; 14:222-229. [PMID: 38495954 PMCID: PMC10940804 DOI: 10.1016/j.jobcr.2024.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/08/2024] [Accepted: 02/26/2024] [Indexed: 03/19/2024] Open
Abstract
Objectives Alpha-lactalbumin, the protein from human and bovine milk has been found to be promising as an alternative of anticancer agent. This study was aimed to investigate the effects of lactalbumin enzymatic hydrolysate (LAH) on cell proliferation, migration, and mRNA expression of matrix metalloproteinase (MMP) on human squamous cell carcinoma (hSCC) cell lines, in vitro. Methods Tongue (HSC-4 and 7) and pharyngeal (HN-30 and 31) hSCC cell lines were treated with a two-fold dilution of LAH (0.39-100 mg/ml). Cell viability and cell proliferation were examined by MTT assay. Colony forming unit (CFU) was assessed by crystal violet blue staining. Cell migration was investigated by scratch wound healing assay. Gene expression of metastasis-associated MMPs was assessed by RT-qPCR. Statistical analyses were evaluated at p value = 0.05. Results LAH at concentration of 50 and 100 mg/ml exhibited cytotoxicity on hSCC cells. The proliferation and CFU ability of hSCC cells were significantly attenuated after LAH treatment. The mRNA expression of MMP2, MMP9, and MMP14 was reduced in HN-30 and HN-31 cells while expression of MMP2 and MMP14 was downregulated in HSC-7 cells. Only MMP1 mRNA level was reduced in HSC-4 cells. However, cell migration of all hSCC cell lines did not alter after LAH treatment. Conclusion LAH treatment exhibits inhibitory effects on hSCC cell growth, proliferation and MMPs gene expression. Thus, LAH should be the promising alternative agent to develop the prospective anti-cancer drug.
Collapse
Affiliation(s)
| | - Worachat Namangkalakul
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence for Dental Stem Cell Biology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Phoonsuk Limraksasin
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence for Dental Stem Cell Biology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanaphum Osathanon
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
- Center of Excellence for Dental Stem Cell Biology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| |
Collapse
|
2
|
Žilinskas J, Stukas D, Jasukaitienė A, Šapauskienė J, Banienė R, Trumbeckaitė S, Švagždys S, Cicciu M, Dambrauskas Ž, Gulbinas A, Tamelis A. HAMLET effect on cell death and mitochondrial respiration in colorectal cancer cell lines with KRAS/BRAF mutations. J Cancer Res Clin Oncol 2023:10.1007/s00432-023-04777-0. [PMID: 37099199 PMCID: PMC10374481 DOI: 10.1007/s00432-023-04777-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 04/10/2023] [Indexed: 04/27/2023]
Abstract
PURPOSE Treatment of advanced colorectal cancer (CRC) depends on the correct selection of personalized strategies. HAMLET (Human Alpha-lactalbumin Made LEthal to Tumor cells) is a natural proteolipid milk compound that might serve as a novel cancer prevention and therapy candidate. Our purpose was to investigate HAMLET effect on viability, death pathway and mitochondrial bioenergetics of CRC cells with different KRAS/BRAF mutational status in vitro. METHODS We treated three cell lines (Caco-2, LoVo, WiDr) with HAMLET to evaluate cell metabolic activity and viability, flow cytometry of apoptotic and necrotic cells, pro- and anti-apoptotic genes, and protein expressions. Mitochondrial respiration (oxygen consumption) rate was recorded by high-resolution respirometry system Oxygraph-2 k. RESULTS The HAMLET complex was cytotoxic to all investigated CRC cell lines and this effect is irreversible. Flow cytometry revealed that HAMLET induces necrotic cell death with a slight increase in an apoptotic cell population. WiDr cell metabolism, clonogenicity, necrosis/apoptosis level, and mitochondrial respiration were affected significantly less than other cells. CONCLUSION HAMLET exhibits irreversible cytotoxicity on human CRC cells in a dose-dependent manner, leading to necrotic cell death and inhibiting the extrinsic apoptosis pathway. BRAF-mutant cell line is more resistant than other type lines. HAMLET decreased mitochondrial respiration and ATP synthesis in CaCo-2 and LoVo cell lines but did not affect WiDr cells' respiration. Pretreatment of cancer cells with HAMLET has no impact on mitochondrial outer and inner membrane permeability.
Collapse
Affiliation(s)
- Justas Žilinskas
- Department of Surgery, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Eivenių Street 2, 50161, Kaunas, Lithuania.
| | - Darius Stukas
- Institute of Digestive Research, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Aldona Jasukaitienė
- Institute of Digestive Research, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Jurgita Šapauskienė
- Department of Biochemistry, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Rasa Banienė
- Department of Biochemistry, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Sonata Trumbeckaitė
- Laboratory of Biochemistry, Neuroscience Institute, Lithuanian University of Health Sciences, Kaunas, Lithuania
- Department of Pharmacognosy, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Saulius Švagždys
- Department of Surgery, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Eivenių Street 2, 50161, Kaunas, Lithuania
| | - Marco Cicciu
- Department of Biomedical and Dental Sciences, Morphological and Functional Images, School of Dentistry, University of Messina, Messina, Italy
| | - Žilvinas Dambrauskas
- Department of Surgery, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Eivenių Street 2, 50161, Kaunas, Lithuania
- Institute of Digestive Research, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Antanas Gulbinas
- Department of Surgery, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Eivenių Street 2, 50161, Kaunas, Lithuania
- Institute of Digestive Research, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Algimantas Tamelis
- Department of Surgery, Medical Academy, Faculty of Medicine, Lithuanian University of Health Sciences, Eivenių Street 2, 50161, Kaunas, Lithuania
| |
Collapse
|
3
|
Babazadeh M, Zamani M, Mehrbod P, Mokarram P. Stemness targeting of colorectal cell lines mediated by BAMLET and 5-Flourouracil. Biochem Biophys Res Commun 2023; 664:136-141. [PMID: 37167706 DOI: 10.1016/j.bbrc.2023.04.010] [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: 03/16/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 05/13/2023]
Abstract
PURPOSE Stemness is the potential for self-renewal and repopulation causing the relapse, progression, and drug resistance of colorectal cancer. We investigated the effects of bovine alpha-lactalbumin made lethal to tumor cells and 5-Flourouracil consisting of bovine α-lactalbumin protein and oleic acid, on colorectal cancer cells on stemness. METHODS The quantitative real-time polymerase chain reaction assessed the expression levels of stemness-related genes (c-myc, Lgr5, OCT4). Expression of stemness-related surface markers (CD44 and CD24) was also measured by the flow cytometry technique following the treatments. RESULTS Our results indicated decreased expression levels of C-Myc, Lgr5, oct4 as the stemness-related genes (P < 0.0001), and reduced population of CD44+ as the stemness-related cell surface marker upon treatment with BAMLET and 5-Flourouracil. BAMLET inhibited the stemness more effectively than 5-Flourouracil (P < 0.0001). CONCLUSION Based on the result, inhibition of the Stemness related-genes (C-Myc, Lgr5, Oct4) and the surface markers (CD 24+ and CD44+) is a promising therapeutic approach using BAMLET.
Collapse
Affiliation(s)
- Marziyeh Babazadeh
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mozhdeh Zamani
- Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Parvaneh Mehrbod
- Influenza and Respiratory Viruses Department, Pasteur Institute of Iran, Tehran, Iran
| | - Pooneh Mokarram
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran; Autophagy Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
| |
Collapse
|
4
|
The Comparative Role of BAMLET and 5-Fluorouracil in Colorectal Cancer Cells by Targeting WNT/& Beta; -Catenin Pathway. INTERNATIONAL JOURNAL OF CANCER MANAGEMENT 2022. [DOI: 10.5812/ijcm-123140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background: Aberrant activation of the WNT/β-catenin signaling pathway is involved in various types of cancers, particularly colorectal cancer (CRC), which is a prevalent malignancy. Targeting the Wnt signaling pathway has gained a reputation as an attractive therapeutic strategy, mainly because of its potential for regulating cell proliferation, migration, differentiation, angiogenesis, and apoptosis. Objectives: The aim of the current research was to investigate the effects of 5-Fluorouracil (5-FU) and bovine alpha-lactalbumin made lethal to tumor cells (BAMLET), a complex of oleic acid with bovine α-lactalbumin protein, on colon cancer cells focusing on the Wnt signaling pathway. Methods: For this purpose, HT-29 and HCT116 cells were treated with 5-FU and BAMLET, and the expression levels of Wnt signaling-related proteins (β-catenin and E-cadherin) and VEGF as angiogenesis regulators were evaluated by quantitative real-time polymerase chain reaction (RT-qPCR) and Western Blot analysis. Results: Bovine alpha-lactalbumin made lethal to tumor cells (BAMLET) treatment down-regulated the expression of β-catenin and up-regulated the expression of E-cadherin significantly compared to the 5-FU (P < 0.0001). The reduced mRNA levels of VEGF in treated cells revealed the effectiveness of 5-FU and BAMLET on angiogenesis. Conclusions: Bovine alpha-lactalbumin made lethal to tumor cells (BAMLET) can be considered for targeting the Wnt signaling pathway and angiogenesis. It is amenable to further investigation in the development of CRC treatment.
Collapse
|
5
|
Carboxyl Group-Modified Myoglobin Induces TNF-α-Mediated Apoptosis in Leukemia Cells. Pharmaceuticals (Basel) 2022; 15:ph15091066. [PMID: 36145287 PMCID: PMC9501283 DOI: 10.3390/ph15091066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 11/17/2022] Open
Abstract
Previous studies have shown that chemical modification may increase the activity of proteins or confer novel activity to proteins. Some studies have indicated that myoglobin (Mb) is cytotoxic; however, the underlying mechanisms remain unclear. In this study, we investigated whether chemical modification of the carboxyl group by semicarbazide could promote the Mb cytotoxicity in human leukemia U937 cells and the underlying mechanism of semicarbazide-modified myoglobin (SEM-Mb)-induced U937 cell death. The semicarbazide-modified Mb (SEM-Mb) induced U937 cell apoptosis via the production of cleaved caspase-8 and t-Bid, while silencing of FADD abolished this effect. These findings suggest that SEM-Mb can induce U937 cell death by activating the death receptor-mediated pathway. The SEM-Mb inhibited miR-99a expression, leading to increased NOX4 mRNA and protein expression, which promoted SIRT3 degradation, and, in turn, induced ROS-mediated p38 MAPK phosphorylation. Activated p38 MAPK stimulated miR-29a-dependent tristetraprolin (TTP) mRNA decay. Downregulation of TTP slowed TNF-α mRNA turnover, thereby increasing TNF-α protein expression. The SEM-Mb-induced decrease in cell viability and TNF-α upregulation were alleviated by abrogating the NOX4/SIRT3/ROS/p38 MAPK axis or ectopic expression of TTP. Taken together, our results demonstrated that the NOX4/SIRT3/p38 MAPK/TTP axis induces TNF-α-mediated apoptosis in U937 cells following SEM-Mb treatment. A pathway regulating p38 MAPK-mediated TNF-α expression also explains the cytotoxicity of SEM-Mb in the human leukemia cell lines HL-60, THP-1, K562, Jurkat, and ABT-199-resistant U937. Furthermore, these findings suggest that the carboxyl group-modified Mb is a potential structural template for the generation of tumoricidal proteins.
Collapse
|
6
|
Milk-Derived Proteins and Peptides in Head and Neck Carcinoma Treatment. Biomolecules 2022; 12:biom12020290. [PMID: 35204791 PMCID: PMC8961572 DOI: 10.3390/biom12020290] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/04/2022] [Accepted: 02/07/2022] [Indexed: 12/24/2022] Open
Abstract
Research investigating milk-derived proteins has brought to light the potential for their use as novel anticancer agents. This paper aims to systematically review studies examining the effectiveness of milk-derived proteins in the treatment of head and neck cancer. A systematic literature search of Medline, Evidence-Based Medicine, and Web of Science databases including papers published from all dates was completed. Inter-rater reliability was high during the title, abstract, and full-text screening phases. Inclusion criteria, exclusion criteria, and data extraction were based on the PICOS tool and research questions. Reporting followed the Preferred Reporting Items for Systematic Review and Meta-Analysis criteria. Eligible in vitro and in vivo studies (n = 8/658) evaluated lactoferrin, α-lactalbumin, and its complexes, such as HAMLET, BAMLET and lactalbumin-oleic acid complexes, as well as lactoperoxidase, whey, and casein. Their effectiveness in the treatment of head and neck cancer cells lines found that these compounds can inhibit tumour growth modulate cancer gene expression, and have cytotoxic effects on cancer cells. However, the exact mechanisms by which these effects are achieved are not well understood. Systematically designed, large, optimally controlled, collaborative studies, both in vitro and in vivo, will be required to gain a better understanding of their potential role in the treatment of head and neck cancer.
Collapse
|
7
|
Redwan EM, Uversky VN. Are the functions of milk exosomes restricted to their protein cargoes? Biomed Pharmacother 2021; 146:112540. [PMID: 34922109 DOI: 10.1016/j.biopha.2021.112540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/06/2021] [Accepted: 12/13/2021] [Indexed: 11/02/2022] Open
Affiliation(s)
- Elrashdy M Redwan
- Biological Science Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Vladimir N Uversky
- Department of Molecular Medicine, University of South Florida, Tampa, FL, United States.
| |
Collapse
|
8
|
Yi DY, Kim SY. Human Breast Milk Composition and Function in Human Health: From Nutritional Components to Microbiome and MicroRNAs. Nutrients 2021; 13:nu13093094. [PMID: 34578971 PMCID: PMC8471419 DOI: 10.3390/nu13093094] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/19/2021] [Accepted: 08/29/2021] [Indexed: 12/14/2022] Open
Abstract
Human breast milk (HBM) is not only an indispensable source of nutrients for early human growth and development, supplying components that support infant growth and development, but also contains various essential immunologic components with anti-infectious activities and critical roles in the formation of immunity. It is also known that HBM contains its own unique microbiome, including beneficial, commensal, and potentially probiotic bacteria, that can contribute to infant gut colonization. In addition, HBM-derived extracellular vesicles, exosomes, and microRNA are attracting increasing interest for their potential to transfer to the infant and their role in infant development. In this article, we examine some of the various constituents in HBM and review the evidence supporting their associated health effects and their potential applications in human health.
Collapse
Affiliation(s)
- Dae Yong Yi
- Department of Pediatrics, Chung-Ang University College of Medicine, Seoul 06974, Korea;
- Department of Pediatrics, Chung-Ang University Hospital, Seoul 06973, Korea
| | - Su Yeong Kim
- Department of Pediatrics, Chung-Ang University College of Medicine, Seoul 06974, Korea;
- Department of Pediatrics, Chung-Ang University Hospital, Seoul 06973, Korea
- Correspondence: ; Tel.: +82-2-6299-1477; Fax: +82-2-6299-1465
| |
Collapse
|
9
|
Chiou JT, Shi YJ, Lee YC, Wang LJ, Chen YJ, Chang LS. Carboxyl group-modified α-lactalbumin induces TNF-α-mediated apoptosis in leukemia and breast cancer cells through the NOX4/p38 MAPK/PP2A axis. Int J Biol Macromol 2021; 187:513-527. [PMID: 34310992 DOI: 10.1016/j.ijbiomac.2021.07.133] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/30/2022]
Abstract
To clarify the mechanism of semicarbazide-modified α-lactalbumin (SEM-LA)-mediated cytotoxicity, we investigated its effect on human U937 leukemia cells and MCF-7 breast cancer cells in the current study. SEM-LA induced apoptosis in U937 cells, which showed increased NOX4 expression, procaspase-8 degradation, and t-Bid production. FADD depletion inhibited SEM-LA-elicited caspase-8 activation, t-Bid production, and cell death, indicating that SEM-LA activated death receptor-mediated apoptosis in U937 cells. SEM-LA stimulated Ca2+-mediated Akt activation, which in turn increased Sp1- and p300-mediated NOX4 transcription. The upregulation of NOX4 expression promoted ROS-mediated p38 MAPK phosphorylation, leading to protein phosphatase 2A (PP2A)-regulated tristetraprolin (TTP) degradation. Remarkably, TTP downregulation increased the stability of TNF-α mRNA, resulting in the upregulation of TNF-α protein expression. Abolishment of Ca2+-NOX4-ROS axis-mediated p38 MAPK activation attenuated SEM-LA-induced TNF-α upregulation and protected U937 cells from SEM-LA-mediated cytotoxicity. The restoration of TTP expression alleviated the effect of TNF-α upregulation and cell death induced by SEM-LA. Altogether, the data in this study demonstrate that SEM-LA activates TNF-α-mediated apoptosis in U937 cells through the NOX4/p38 MAPK/PP2A axis. We think that a similar pathway can also explain the death of MCF-7 human breast cancer cells after SEM-LA treatment.
Collapse
Affiliation(s)
- Jing-Ting Chiou
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Yi-Jun Shi
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Yuan-Chin Lee
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Liang-Jun Wang
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Ying-Jung Chen
- Department of Fragrance and Cosmetic Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Long-Sen Chang
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| |
Collapse
|
10
|
Rahamtullah, Mishra R. Nicking and fragmentation are responsible for α-lactalbumin amyloid fibril formation at acidic pH and elevated temperature. Protein Sci 2021; 30:1919-1934. [PMID: 34107116 DOI: 10.1002/pro.4144] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 02/03/2023]
Abstract
Amyloid fibrils are ordered aggregates that may be formed from disordered, partially unfolded, and fragments of proteins and peptides. There are several diseases, which are due to the formation and deposition of insoluble β-sheet protein aggregates in various tissue, collectively known as amyloidosis. Here, we have used bovine α-lactalbumin as a model protein to understand the mechanism of amyloid fibril formation at pH 1.6 and 65°C under non-reducing conditions. Amyloid fibril formation is confirmed by Thioflavin T fluorescence and atomic force microscopy (AFM). Our finding demonstrates that hydrolysis of peptide bonds occurs under these conditions, which results in nicking and fragmentation. The nicking and fragmentation have been confirmed on non-reducing and reducing gel. We have identified the fragments by matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry. The fragmentation may initiate nucleation as it coincides with AFM images. Conformational changes associated with monomer resulting in fibrillation are shown by circular dichroism and Raman spectroscopy. The current study highlights the importance of nicking and fragmentation in amyloid fibril formation, which may help understand the role of acidic pH and proteolysis under in vivo conditions in the initiation of amyloid fibril formation.
Collapse
Affiliation(s)
- Rahamtullah
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Rajesh Mishra
- School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| |
Collapse
|
11
|
Meng F, Uniacke-Lowe T, Ryan AC, Kelly AL. The composition and physico-chemical properties of human milk: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
12
|
Quitadamo PA, Palumbo G, Cianti L, Lurdo P, Gentile MA, Villani A. The Revolution of Breast Milk: The Multiple Role of Human Milk Banking between Evidence and Experience-A Narrative Review. Int J Pediatr 2021; 2021:6682516. [PMID: 33623528 PMCID: PMC7872774 DOI: 10.1155/2021/6682516] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/04/2021] [Accepted: 01/09/2021] [Indexed: 02/05/2023] Open
Abstract
The review recalls the importance of breast milk and deepens the theme of human milk banking, a virtuous reality that is expanding all over the world but is still little known. In the last 15 years, modern biological technologies have crystallized the concept of uniqueness and irreproducibility of human milk, by establishing three new principles: first: human milk: a "life-saving" drug; second: human milk: the best food for preterm infants; and third: human milk: the main component of premature infant care. Our experience teaches us that human milk banking plays many roles that need to be known and shared.
Collapse
Affiliation(s)
- Pasqua Anna Quitadamo
- NICU, HMB “Casa Sollievo della Sofferenza” Foundation, San Giovanni Rotondo, Foggia, Italy
| | - Giuseppina Palumbo
- NICU, HMB “Casa Sollievo della Sofferenza” Foundation, San Giovanni Rotondo, Foggia, Italy
| | - Liliana Cianti
- NICU, HMB “Casa Sollievo della Sofferenza” Foundation, San Giovanni Rotondo, Foggia, Italy
| | - Paola Lurdo
- NICU, HMB “Casa Sollievo della Sofferenza” Foundation, San Giovanni Rotondo, Foggia, Italy
| | - Maria Assunta Gentile
- NICU, HMB “Casa Sollievo della Sofferenza” Foundation, San Giovanni Rotondo, Foggia, Italy
| | - Antonio Villani
- NICU, HMB “Casa Sollievo della Sofferenza” Foundation, San Giovanni Rotondo, Foggia, Italy
| |
Collapse
|
13
|
Ubaid S, Rumman M, Singh B, Akhtar MS, Mahdi AA, Pandey S. Elucidating the Neuroprotective Role of Formulated Camel α-Lactalbumin-Oleic Acid Complex by Curating the SIRT1 Pathway in Parkinson's Disease Model. ACS Chem Neurosci 2020; 11:4416-4425. [PMID: 33253528 DOI: 10.1021/acschemneuro.0c00639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Parkinson's Disease (PD) is characterized by increased oxidative stress and decreased level of dopamine. At present, the therapeutic interventions of PD are associated with undesirable adverse effects. To overcome these side effects, a new candidate bioinspired molecule is needed for the management of PD. Camel α-lactalbumin (α-LA) is the most abundant protein in camel's milk and has a potential to act as a nutraceutical supplement for neurological functions. Oleic acid, a monounsaturated fatty acid, has been widely associated with a reduced risk of PD. The present study aimed to formulate the camel α-LA and oleic acid (CLOA) complex under specific conditions and to evaluate its efficacy as a neuroprotective in rotenone induced PC12 cell model of PD. Our results demonstrated that removal of Ca++ ions from camel α-LA by EDTA enhances its binding efficiency with oleic acid, and the complex was characterized by UV-CD, ANS fluorescence spectroscopy, and NMR spectroscopy. Moreover, CLOA complex treatment reduced the oxidative stress and increased the cell viability by enhancing the level of dopamine and the expression of SIRT1, FOXO3a, HIF-1α, and HSF-1. We also validated the neuroprotective role of the complex by incubating the cells with CLOA complex prior to rotenone treatment. We inferred from the outcome of the results that the individual entity, i.e., α-LA or OA, is not as effective as the complex. Taken together, our study indicates that CLOA complex might be a potential candidate for the development of future therapeutic drugs for PD.
Collapse
Affiliation(s)
- Saba Ubaid
- Department of Biochemistry, King George’s Medical University (KGMU), Lucknow, 226003 U.P., India
| | - Mohammad Rumman
- Department of Biochemistry, King George’s Medical University (KGMU), Lucknow, 226003 U.P., India
| | - Babita Singh
- Department of Biochemistry, King George’s Medical University (KGMU), Lucknow, 226003 U.P., India
| | - Mohd. Sohail Akhtar
- Division of Molecular & Structural Biology, Central Drug Research Institute, Lucknow, 226031 U.P., India
| | - Abbas A. Mahdi
- Department of Biochemistry, King George’s Medical University (KGMU), Lucknow, 226003 U.P., India
| | - Shivani Pandey
- Department of Biochemistry, King George’s Medical University (KGMU), Lucknow, 226003 U.P., India
| |
Collapse
|
14
|
Krajewska M, Dopierała K, Wydro P, Broniatowski M, Prochaska K. Interfacial complex of α-lactalbumin with oleic acid: effect of protein concentration and PM-IRRAS study. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114089] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
15
|
Fadeel B, Alexiou C. Brave new world revisited: Focus on nanomedicine. Biochem Biophys Res Commun 2020; 533:36-49. [PMID: 32921412 DOI: 10.1016/j.bbrc.2020.08.046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 12/11/2022]
Abstract
Nanomedicine is at a crossroads: with relatively few success stories in terms of clinical translation despite more and more research on increasingly sophisticated nanomaterials, it is important to consider whether we are on the right track. Indeed, it is crucial that we address the fact that while considerable efforts are being made to overcome barriers to translation from the bench to the clinic, scientists are still struggling to decipher fundamental aspects of nanomaterial interactions with biological systems. We believe that a key to the successful adoption of nanomedicines in oncology and beyond lies in a deeper understanding of underlying biological processes and in decoding interactions between engineered nanomaterials and biological systems. Here we provide an overview of progress in nanomedicine during the past 5 years.
Collapse
Affiliation(s)
- Bengt Fadeel
- Nanomedicine & Nanosafety Laboratory (NNL), Division of Molecular Toxicology, Institute of Environmental Medicine, Karolinska Institutet, 171 77, Stockholm, Sweden.
| | - Christoph Alexiou
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Section for Experimental Oncology and Nanomedicine (SEON), University Hospital Erlangen, Else Kröner-Fresenius-Stiftung Professorship, 91054, Erlangen, Germany
| |
Collapse
|
16
|
Shi YJ, Chiou JT, Huang CH, Lee YC, Wang LJ, Chang LS. Modification of carboxyl groups converts α-lactalbumin into an active molten globule state with membrane-perturbing activity and cytotoxicity. Int J Biol Macromol 2020; 163:1697-1706. [DOI: 10.1016/j.ijbiomac.2020.09.095] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/23/2020] [Accepted: 09/14/2020] [Indexed: 10/23/2022]
|
17
|
α-Lactalbumin, Amazing Calcium-Binding Protein. Biomolecules 2020; 10:biom10091210. [PMID: 32825311 PMCID: PMC7565966 DOI: 10.3390/biom10091210] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/14/2020] [Accepted: 08/17/2020] [Indexed: 02/06/2023] Open
Abstract
α-Lactalbumin (α-LA) is a small (Mr 14,200), acidic (pI 4–5), Ca2+-binding protein. α-LA is a regulatory component of lactose synthase enzyme system functioning in the lactating mammary gland. The protein possesses a single strong Ca2+-binding site, which can also bind Mg2+, Mn2+, Na+, K+, and some other metal cations. It contains several distinct Zn2+-binding sites. Physical properties of α-LA strongly depend on the occupation of its metal binding sites by metal ions. In the absence of bound metal ions, α-LA is in the molten globule-like state. The binding of metal ions, and especially of Ca2+, increases stability of α-LA against the action of heat, various denaturing agents and proteases, while the binding of Zn2+ to the Ca2+-loaded protein decreases its stability and causes its aggregation. At pH 2, the protein is in the classical molten globule state. α-LA can associate with membranes at neutral or slightly acidic pH at physiological temperatures. Depending on external conditions, α-LA can form amyloid fibrils, amorphous aggregates, nanoparticles, and nanotubes. Some of these aggregated states of α-LA can be used in practical applications such as drug delivery to tissues and organs. α-LA and some of its fragments possess bactericidal and antiviral activities. Complexes of partially unfolded α-LA with oleic acid are cytotoxic to various tumor and bacterial cells. α-LA in the cytotoxic complexes plays a role of a delivery carrier of cytotoxic fatty acid molecules into tumor and bacterial cells across the cell membrane. Perhaps in the future the complexes of α-LA with oleic acid will be used for development of new anti-cancer drugs.
Collapse
|
18
|
Pedersen JN, Frislev HKS, Pedersen JS, Otzen D. Structures and mechanisms of formation of liprotides. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1868:140505. [PMID: 32721568 DOI: 10.1016/j.bbapap.2020.140505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/16/2020] [Indexed: 12/11/2022]
Abstract
Many proteins form complexes called liprotides with oleic acid and other cis-fatty acids under conditions where the protein is partially unfolded. The complexes vary in structure depending on the ratio of protein and lipid, but the most common structural organization is the core-shell structure, in which a layer of dynamic, partially unfolded and extended proteins surrounds a micelle-like fatty acid core. This structure, first reported for α-lactalbumin together with OA, resembles complexes formed between proteins and anionic surfactants like SDS. Liprotides first rose to fame through their anti-carcinogenic properties which still remains promising for topical applications though not yet implemented in the clinic. In addition, liprotides show potential in drug delivery thanks to the ability of the micelle core to solubilize and stabilize hydrophobic compounds, though applications are challenged by their sensitivity to acidic pH and dynamic exchange of lipids which makes them easy prey for serum "hoovers" such as albumin. However, liprotides are also of fundamental interest as a generic "protein complex structure", demonstrating the many and varied structural consequences of protein-lipid interactions. Here we provide an overview of the different types of liprotide complexes, ranging from quasi-native complexes via core-shell structures to multi-layer structures, and discuss the many conditions under which they form. Given the many variable types of complexes that can form, rigorous biophysical analysis (stoichiometry, shape and structure of the complexes) remains crucial for a complete understanding of the mechanisms of action of this fascinating group of protein-lipid complexes both in vitro and in vivo.
Collapse
Affiliation(s)
- Jannik Nedergaard Pedersen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Henriette Kristina Søster Frislev
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark; Novo Nordisk, Hallas Alle 1, DK-4400 Kalundborg, Denmark
| | - Jan Skov Pedersen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark; Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Daniel Otzen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark; Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10C, 8000 Aarhus C, Denmark.
| |
Collapse
|
19
|
The novel therapeutic potential of bovine α-lactalbumin made lethal to tumour cells (BALMET) and oleic acid in oral squamous cell carcinoma (OSCC). Eur J Cancer Prev 2020; 30:178-187. [PMID: 32694279 DOI: 10.1097/cej.0000000000000617] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Since the serendipitous discovery of bovine α-lactalbumin made lethal to tumour cells (BAMLET)/human α-lactalbumin made lethal to tumour cells there has been an increased interest in the ability of the two components, oleic acid and α-lactalbumin, to form anti-cancer complexes. Here we have investigated the in-vitro efficacy of the BAMLET complex in killing oral cancer (OC) cells, determined the active component of the complex and investigated possible biological mechanisms. MATERIALS AND METHODS Two OC cell lines (±p53 mutation) and one dysplastic cell line were used as a model of progressive oral carcinogenesis. We performed cell viability assays with increasing BAMLET concentrations to determine the cytotoxic potential of the complex. We further analysed the individual components to determine their respective cytotoxicities. siRNA knockdown of p53 was used to determine its functional role in mediating sensitivity to BAMLET. Cell death mechanisms were investigated by flow cytometry, confocal microscopy and the lactate dehydrogenase assay. RESULTS Our results show that BAMLET is cytotoxic to the OC and dysplastic cell lines in a time and dose-dependent manner. The cytotoxic component was found to be oleic acid, which, can induce cytotoxicity even when not in complex. Our results indicate that the mechanism of cytotoxicity occurs through multiple simultaneous events including cell cycle arrest, autophagy like processes with a minor involvement of necrosis. CONCLUSION Deciphering the mechanism of cytotoxicity will aid treatment modalities for OC. This study highlights the potential of BAMLET as a novel therapeutic strategy in oral dysplastic and cancerous cells.
Collapse
|
20
|
The Recombinant Fragment of Human κ-Casein Induces Cell Death by Targeting the Proteins of Mitochondrial Import in Breast Cancer Cells. Cancers (Basel) 2020; 12:cancers12061427. [PMID: 32486420 PMCID: PMC7352597 DOI: 10.3390/cancers12061427] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/24/2020] [Accepted: 05/29/2020] [Indexed: 12/22/2022] Open
Abstract
Breast cancer is still one of the most common cancers for women. Specified therapeutics are indispensable for optimal treatment. In previous studies, it has been shown that RL2, the recombinant fragment of human κ-Casein, induces cell death in breast cancer cells. However, the molecular mechanisms of RL2-induced cell death remain largely unknown. In this study, mechanisms of RL2-induced cell death in breast cancer cells were systematically investigated. In particular, we demonstrate that RL2 induces loss of mitochondrial membrane potential and cellular ATP loss followed by cell death in breast cancer cells. The mass spectrometry-based screen for RL2 interaction partners identified mitochondrial import protein TOM70 as a target of RL2, which was subsequently validated. Further to this, we show that RL2 is targeted to mitochondria after internalization into the cells, where it can also be found in the dimeric form. The importance of TOM70 and RL2 interaction in RL2-induced reduction in ATP levels was validated by siRNA-induced downregulation of TOM70, resulting in the partial rescue of ATP production. Taken together, this study demonstrates that RL2–TOM70 interaction plays a key role in RL2-mediated cell death and targeting this pathway may provide new therapeutic options for treating breast cancer.
Collapse
|
21
|
Abstract
Being originally discovered as cellular recycling bins, lysosomes are today recognized as versatile signaling organelles that control a wide range of cellular functions that are essential not only for the well-being of normal cells but also for malignant transformation and cancer progression. In addition to their core functions in waste disposal and recycling of macromolecules and energy, lysosomes serve as an indispensable support system for malignant phenotype by promoting cell growth, cytoprotective autophagy, drug resistance, pH homeostasis, invasion, metastasis, and genomic integrity. On the other hand, malignant transformation reduces the stability of lysosomal membranes rendering cancer cells sensitive to lysosome-dependent cell death. Notably, many clinically approved cationic amphiphilic drugs widely used for the treatment of other diseases accumulate in lysosomes, interfere with their cancer-promoting and cancer-supporting functions and destabilize their membranes thereby opening intriguing possibilities for cancer therapy. Here, we review the emerging evidence that supports the supplementation of current cancer therapies with lysosome-targeting cationic amphiphilic drugs.
Collapse
|
22
|
Krajewska M, Dopierała K, Prochaska K. Lipid-Protein Interactions in Langmuir Monolayers under Dynamically Varied Conditions. J Phys Chem B 2019; 124:302-311. [PMID: 31825621 DOI: 10.1021/acs.jpcb.9b10351] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In the Langmuir monolayer technique, a single layer of molecules is formed on a water subphase. This approach was used to mimic the antitumoricidal lipid-protein complex of oleic acid and bovine α-lactalbumin called the BAMLET complex. Our previous studies have shown that at the interface, the BAMLET complex is stabilized by the hydrophobic forces supported by the hydrogen bonds. This study provides an insight into the influence of calcium ions and the experimental conditions (temperature and subphase pH) on the stability of the complex at the interface. The Langmuir technique was expanded using a dosing pump to exchange the subphase and deliver additional substances to the system. We investigated the interactions between oleic acid monolayer and α-lactalbumin in the presence of Ca2+ in the bulk and the effect of varied experimental conditions on the complex stability. The role of calcium ions in this system is important because (in addition to low pH and relatively high temperature) it affects the conformational changes within the protein molecule and facilitates the transition of α-lactalbumin into the molten globule state. A partially unfolded state is required to form the BAMLET complex. We found that the mixed monolayer spread at the interface is stable despite drastic changes in the process conditions and remains stable even after the subphase exchange. This study of molecular interactions explored by the Langmuir technique with peristaltic pump enabled to understand the role of Ca2+ in BAMLET complex formation.
Collapse
Affiliation(s)
- Martyna Krajewska
- Institute of Chemical Technology and Engineering , Poznan University of Technology , Berdychowo 4 , 60-965 Poznań , Poland
| | - Katarzyna Dopierała
- Institute of Chemical Technology and Engineering , Poznan University of Technology , Berdychowo 4 , 60-965 Poznań , Poland
| | - Krystyna Prochaska
- Institute of Chemical Technology and Engineering , Poznan University of Technology , Berdychowo 4 , 60-965 Poznań , Poland
| |
Collapse
|
23
|
El-Fakharany EM, Redwan EM. Protein-lipid complexes: molecular structure, current scenarios and mechanisms of cytotoxicity. RSC Adv 2019; 9:36890-36906. [PMID: 35539089 PMCID: PMC9075609 DOI: 10.1039/c9ra07127j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/21/2019] [Indexed: 02/04/2023] Open
Abstract
Some natural proteins can be complexed with oleic acid (OA) to form an active protein-lipid formulation that can induce tumor-selective apoptosis. The first explored protein was human milk α-lactalbumin (α-LA), called HAMLET when composed with OA in antitumor form. Several groups have prepared active protein-lipid complexes using a variety of approaches, all of which depend on target protein destabilization or direct OA-protein incubation to alter pH to acid or alkaline condition. In addition to performing vital roles in inflammatory processes and immune responses, fatty acids can disturb different metabolic pathways and cellular signals. Therefore, the tumoricidal action of these complexes is related to OA rather than the protein that keeps OA in solution and acts as a vehicle for transferring OA molecules to tumor cells. However, other studies have suggested that the antitumor efficacy of these complexes was exerted by both protein and OA together. The potential is not limited to the anti-tumor activity of protein-lipid complexes but extends to other functions such as bactericidal activity. The protein shell enhances the solubility and stability of the bound fatty acid. These protein-lipid complexes are promising candidates for fighting various cancer types and managing bacterial and viral infections.
Collapse
Affiliation(s)
- Esmail M El-Fakharany
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technology Applications (SRTA-City) New Borg EL-Arab 21934 Alexandria Egypt
| | - Elrashdy M Redwan
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute, City for Scientific Research and Technology Applications (SRTA-City) New Borg EL-Arab 21934 Alexandria Egypt
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University P. O. Box 80203 Jeddah Saudi Arabia
| |
Collapse
|
24
|
Si Ahmed Zennia S, Mati A, Charron C, Cakir-Kiefer C, Kriznik A, Girardet JM. Effect of nonenzymatic deamidation on the structure stability of Camelus dromedarius α-lactalbumin. Food Chem 2019; 291:207-213. [PMID: 31006460 DOI: 10.1016/j.foodchem.2019.04.033] [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: 12/10/2018] [Revised: 03/22/2019] [Accepted: 04/08/2019] [Indexed: 01/20/2023]
Abstract
Camelid α-lactalbumin is the only known protein that can undergo nonenzymatic deamidation on two Asn residues. This leads to the generation of a mixture of unusual isoAsp and d-Asp residues that may impact health. The effect of deamidation on camel α-lactalbumin instability was investigated. Circular dichroism showed that the altered protein acquired secondary structure resulting in an increase in α-helix content. In good agreement, the 3D structure of camel α-lactalbumin determined by X-ray crystallography, displayed a short additional α-helix probably induced by deamidation, compared to the human and bovine counterparts. This α-helix was located in the C-terminal region and included residues 101-106. Differential scanning calorimetry together with the susceptibility to thermolysin showed that the deamidation process reinforced the structural stability of the α-lactalbumin at high temperature and its resistance toward proteolysis.
Collapse
Affiliation(s)
- Saliha Si Ahmed Zennia
- Université Mouloud Mammeri, Laboratoire de Recherche de Biochimie Analytique et Biotechnologies (LABAB), Tizi Ouzou, Algeria
| | - Abderrahmane Mati
- Université Mouloud Mammeri, Laboratoire de Recherche de Biochimie Analytique et Biotechnologies (LABAB), Tizi Ouzou, Algeria
| | - Christophe Charron
- Université de Lorraine, CNRS, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), UMR 7365, Nancy F-54000, France
| | - Céline Cakir-Kiefer
- Université de Lorraine, INRA, Unité de Recherche Animal et Fonctionnalités des Produits Animaux (UR AFPA), USC 340, Nancy F-54000, France
| | - Alexandre Kriznik
- Université de Lorraine, CNRS, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), UMR 7365, Nancy F-54000, France
| | - Jean-Michel Girardet
- Université de Lorraine, INRA, Unité de Recherche Animal et Fonctionnalités des Produits Animaux (UR AFPA), USC 340, Nancy F-54000, France.
| |
Collapse
|
25
|
Milk Therapy: Unexpected Uses for Human Breast Milk. Nutrients 2019; 11:nu11050944. [PMID: 31027386 PMCID: PMC6567207 DOI: 10.3390/nu11050944] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 04/23/2019] [Accepted: 04/25/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Human breast milk provides a child with complete nutrition but is also a popular therapeutic remedy that has been used in traditional, natural pharmacopeia, and ethnomedicine for many years. The aim of this current review is to summarize studies of non-nutritional uses of mothers' milk. METHODS Two databases (PubMed and Google Scholar) were searched with a combination of twelve search terms. We selected articles that were published between 1 January 2010, and 1 January 2019. The language of publication was limited to English. RESULTS Fifteen studies were included in the systematic review. Ten of these were randomized controlled trials, one was a quasi-experimental study, two were in vitro studies, and four employed an animal research model. CONCLUSIONS Many human milk components have shown promise in preclinical studies and are undergoing active clinical evaluation. The protective and treatment role of fresh breast milk is particularly important in areas where mothers and infants do not have ready access to medicine.
Collapse
|
26
|
Pick H, Alves AC, Vogel H. Single-Vesicle Assays Using Liposomes and Cell-Derived Vesicles: From Modeling Complex Membrane Processes to Synthetic Biology and Biomedical Applications. Chem Rev 2018; 118:8598-8654. [PMID: 30153012 DOI: 10.1021/acs.chemrev.7b00777] [Citation(s) in RCA: 96] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The plasma membrane is of central importance for defining the closed volume of cells in contradistinction to the extracellular environment. The plasma membrane not only serves as a boundary, but it also mediates the exchange of physical and chemical information between the cell and its environment in order to maintain intra- and intercellular functions. Artificial lipid- and cell-derived membrane vesicles have been used as closed-volume containers, representing the simplest cell model systems to study transmembrane processes and intracellular biochemistry. Classical examples are studies of membrane translocation processes in plasma membrane vesicles and proteoliposomes mediated by transport proteins and ion channels. Liposomes and native membrane vesicles are widely used as model membranes for investigating the binding and bilayer insertion of proteins, the structure and function of membrane proteins, the intramembrane composition and distribution of lipids and proteins, and the intermembrane interactions during exo- and endocytosis. In addition, natural cell-released microvesicles have gained importance for early detection of diseases and for their use as nanoreactors and minimal protocells. Yet, in most studies, ensembles of vesicles have been employed. More recently, new micro- and nanotechnological tools as well as novel developments in both optical and electron microscopy have allowed the isolation and investigation of individual (sub)micrometer-sized vesicles. Such single-vesicle experiments have revealed large heterogeneities in the structure and function of membrane components of single vesicles, which were hidden in ensemble studies. These results have opened enormous possibilities for bioanalysis and biotechnological applications involving unprecedented miniaturization at the nanometer and attoliter range. This review will cover important developments toward single-vesicle analysis and the central discoveries made in this exciting field of research.
Collapse
Affiliation(s)
- Horst Pick
- Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - Ana Catarina Alves
- Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| | - Horst Vogel
- Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , CH-1015 Lausanne , Switzerland
| |
Collapse
|
27
|
Abou-Dakn M. [Health effects of breastfeeding on the mother]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2018; 61:986-989. [PMID: 29978234 DOI: 10.1007/s00103-018-2776-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We evaluated the effect of breastfeeding on maternal health outcomes. We distinguished between long-term effects (breast carcinoma, ovarian carcinoma, endometrial carcinoma, osteoporosis, and type 2 diabetes mellitus) and short-term effects (lactational amenorrhea, postpartum depression, and postpartum weight change).Predominant breastfeeding increases the duration of lactational amenorrhea, which has a short-term effect on the reduction of fertility. There are many studies that show that breastfeeding is protective against breast, ovarian carcinoma, and endometrial carcinoma. The effects depend on the duration of breastfeeding. There is evidence that breastfeeding reduces the risk of type 2 diabetes and metabolic syndrome and cardiac diseases. However, an association between breastfeeding and bone mineral density or maternal depression or postpartum weight change was not clearly evident.
Collapse
Affiliation(s)
- Michael Abou-Dakn
- Klinik für Gynäkologie und Geburtshilfe, St. Joseph Krankenhaus Berlin-Tempelhof, Wüsthofstr. 15, 12101, Berlin, Deutschland.
| |
Collapse
|
28
|
Abstract
α-Lactalbumin is a whey protein that constitutes approximately 22% of the proteins in human milk and approximately 3.5% of those in bovine milk. Within the mammary gland, α-lactalbumin plays a central role in milk production as part of the lactose synthase complex required for lactose formation, which drives milk volume. It is an important source of bioactive peptides and essential amino acids, including tryptophan, lysine, branched-chain amino acids, and sulfur-containing amino acids, all of which are crucial for infant nutrition. α-Lactalbumin contributes to infant development, and the commercial availability of α-lactalbumin allows infant formulas to be reformulated to have a reduced protein content. Likewise, because of its physical characteristics, which include water solubility and heat stability, α-lactalbumin has the potential to be added to food products as a supplemental protein. It also has potential as a nutritional supplement to support neurological function and sleep in adults, owing to its unique tryptophan content. Other components of α-lactalbumin that may have usefulness in nutritional supplements include the branched-chain amino acid leucine, which promotes protein accretion in skeletal muscle, and bioactive peptides, which possess prebiotic and antibacterial properties. This review describes the characteristics of α-lactalbumin and examines the potential applications of α-lactalbumin for human health.
Collapse
Affiliation(s)
- Donald K Layman
- Department of Food Science and Human Nutrition, University of Illinois at Urban-Champaign, Urbana, Illinois, USA
| | - Bo Lönnerdal
- Department of Nutrition, University of California, Davis, Davis, California, USA
| | - John D Fernstrom
- Department of Psychiatry and the Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| |
Collapse
|