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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.
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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
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Figueroa JD, Barroso-Torres N, Morales M, Herrera B, Aranda M, Dorta E, López-Alarcón C. Antioxidant Capacity of Free and Peptide Tryptophan Residues Determined by the ORAC (Oxygen Radical Absorbance Capacity) Assay Is Modulated by Radical-Radical Reactions and Oxidation Products. Foods 2023; 12:4360. [PMID: 38231845 DOI: 10.3390/foods12234360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 01/19/2024] Open
Abstract
The ORAC (Oxygen Radical Absorbance Capacity) assay is commonly employed for determining the antioxidant capacity of bioactive peptides. To gain insights into the meaning of this index for peptides containing a single Trp, we studied the consumption of this residue and fluorescein (FLH, the probe of ORAC method), induced by radicals generated by AAPH (2,2'-Azo-bis(2-amidinopropane) dihydrochloride) thermolysis. ORAC values were rationalized from kinetics and computational calculations of bond dissociation energies (BDE) of the N-H bond (indole ring of Trp). Free Trp, di- and tri- peptides, and three larger peptides were studied. Solutions containing 70 nM FLH, 1-5 μM free Trp or peptides, and 10 mM AAPH were incubated at 37 °C in phosphate buffer. Kinetic studies showed that FLH minimally affected Trp consumption. However, a clear protection of FLH, characterized by pseudo-lag times, was evidenced, reflecting radical-radical reactions and FLH repairing. Peptides showed similar ORAC values (~1.9-2.8 Trolox equivalents), while BDE varied between 91.9 and 103.5 kcal. These results, added to the protection of FLH observed after total consumption of Trp, indicate a lack of discrimination of the assay for the chemical structure of peptides and the contribution of oxidation products to the index.
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Affiliation(s)
- Juan David Figueroa
- Departamento de Química Física, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Noreima Barroso-Torres
- Departamento de Producción Vegetal, Instituto Canario de Investigaciones Agrarias (ICIA), 38270 San Cristóbal de la Laguna, Spain
| | - Marcela Morales
- Departamento de Química Física, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Bárbara Herrera
- Departamento de Química Física, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Mario Aranda
- Escuela de Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Eva Dorta
- Departamento de Producción Vegetal, Instituto Canario de Investigaciones Agrarias (ICIA), 38270 San Cristóbal de la Laguna, Spain
| | - Camilo López-Alarcón
- Departamento de Química Física, Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
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Nielsen SDH, Liang N, Rathish H, Kim BJ, Lueangsakulthai J, Koh J, Qu Y, Schulz HJ, Dallas DC. Bioactive milk peptides: an updated comprehensive overview and database. Crit Rev Food Sci Nutr 2023:1-20. [PMID: 37504497 PMCID: PMC10822030 DOI: 10.1080/10408398.2023.2240396] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Partial digestion of milk proteins leads to the formation of numerous bioactive peptides. Previously, our research team thoroughly examined the decades of existing literature on milk bioactive peptides across species to construct the milk bioactive peptide database (MBPDB). Herein, we provide a comprehensive update to the data within the MBPDB and a review of the current state of research for each functional category from in vitro to animal and clinical studies, including angiotensin-converting enzyme (ACE)-inhibitory, antimicrobial, antioxidant, dipeptidyl peptidase (DPP)-IV inhibitory, opioid, anti-inflammatory, immunomodulatory, calcium absorption and bone health and anticancer activity. This information will help drive future research on the bioactivities of milk peptides.
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Affiliation(s)
| | - Ningjian Liang
- Nutrition Program, College of Health, Oregon State University, Corvallis, Oregon, USA
| | - Harith Rathish
- Department of Computer Science, Aarhus University, Aarhus, Denmark
| | - Bum Jin Kim
- Nutrition Program, College of Health, Oregon State University, Corvallis, Oregon, USA
| | | | - Jeewon Koh
- Nutrition Program, College of Health, Oregon State University, Corvallis, Oregon, USA
| | - Yunyao Qu
- Nutrition Program, College of Health, Oregon State University, Corvallis, Oregon, USA
| | - Hans-Jörg Schulz
- Department of Computer Science, Aarhus University, Aarhus, Denmark
| | - David C. Dallas
- Nutrition Program, College of Health, Oregon State University, Corvallis, Oregon, USA
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Chen Y, Lin Q, Wang J, Mu J, Liang Y. Proteins, polysaccharides and their derivatives as macromolecular antioxidant supplements: A review of in vitro screening methods and strategies. Int J Biol Macromol 2022; 224:958-971. [DOI: 10.1016/j.ijbiomac.2022.10.181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/16/2022] [Accepted: 10/20/2022] [Indexed: 11/05/2022]
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Antioxidant Potential of the Sweet Whey-Based Beverage Colada after the Digestive Process and Relationships with the Lipid and Protein Fractions. Antioxidants (Basel) 2022; 11:antiox11091827. [PMID: 36139901 PMCID: PMC9495724 DOI: 10.3390/antiox11091827] [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: 08/07/2022] [Revised: 09/06/2022] [Accepted: 09/14/2022] [Indexed: 11/20/2022] Open
Abstract
Whey-based beverages could be an effective way of reusing a by-product of th cheese industry, mitigating environmental hazards and, at the same time, profiting a useful food with high nutritional and antioxidant properties. In this study, a traditional Ecuadorian beverage (Colada) was prepared combining sweet whey, Maracuyá and barley. Antioxidant properties before and after an in vitro digestion using the INFOGEST method were determined, and relationships with intestinal transformations of the lipid and protein fractions were analyzed. The digestive process had a positive effect on antioxidant properties based on increased values of ABTS and FRAP located in the bioaccessible fraction (BF), together with strong increments of total polyphenols. Moreover, pretreatment of Caco-2 cells with the BF of Colada significantly reduced ROS generation (p < 0.001) measured by the dichlorofluorescein assay. Substantial changes of the fatty acid profile occurred during digestion, such as a fall of saturated fatty acids and a rise of polyunsaturated. The protein profile, examined by SDS-PAGE and exclusion molecular chromatography in the BF, showed that the major part of the proteins were digested in the intestinal phase. Analysis of NanoLC-MS/MS revealed 18 antioxidant peptides originated from whey proteins, but also 16 peptides from barley with potential antioxidant properties. In conclusion, combining sweet whey with Maracuyá and barley constitutes an excellent nutritional beverage with a strong antioxidant potential.
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Ulagesan S, Eom T, Nam TJ, Choi YH. Antioxidant and chemoprotective peptides from simulated gastrointestinal digested (SGID) protein hydrolysate of Pyropia yezoensis against acetaminophen-induced HepG2 cells. Bioprocess Biosyst Eng 2022; 45:1645-1660. [PMID: 35976436 PMCID: PMC9381401 DOI: 10.1007/s00449-022-02770-4] [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: 06/10/2022] [Accepted: 08/04/2022] [Indexed: 11/28/2022]
Abstract
Excessive production of reactive oxygen and nitrogen species may result in oxidative damage to tissues and organs. Oxidative stress is a pathological mechanism that contributes to the initiation and progression of liver injury. In the present study, antioxidative peptides purified from simulated gastrointestinal-digested (SGID) protein hydrolysate of Pyropia yezoensis, showed significant antioxidant activity and also showed a protective effect against acetaminophen (N-acetyl-p-aminophenol, APAP) -induced injury in HepG2 (human liver cancer cells) cells. The antioxidant activity was increased in a dose-dependent manner. Higher cell viability (73.26 ± 0.9%) and decreasing NO levels (107.6 ± 8.9%) were observed in 15 mM APAP-induced cells when treated with the concentration of (100 μg ml−1) Pyropia peptide. Py. (pep). The sequences of the eight identified peptides present in the active fractions of the protein hydrolysate included hydrophobic and aromatic amino acids, which may have been responsible for their chemoprotective and antioxidant activities. Results indicated that the treatment with the Pyropia—peptides significantly promoted the proliferation of HepG2 cells, protecting them against APAP-mediated injury, and showed a significant antioxidant capacity. This study revealed that the Py. (pep) will be beneficial in treating drug-induced oxidative stress and liver damage conditions. Py. (pep) can also serve as a better alternative for synthetic antioxidant drugs.
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Affiliation(s)
- Selvakumari Ulagesan
- Division of Fisheries Life Sciences, Pukyong National University, Nam-gu, Busan, 48513, Republic of Korea
| | - Taekil Eom
- Institute of Fisheries Sciences, Pukyong National University, Gijang-gun, Busan, 46041, Republic of Korea
| | - Taek-Jeong Nam
- Institute of Fisheries Sciences, Pukyong National University, Gijang-gun, Busan, 46041, Republic of Korea
| | - Youn-Hee Choi
- Division of Fisheries Life Sciences, Pukyong National University, Nam-gu, Busan, 48513, Republic of Korea. .,Institute of Fisheries Sciences, Pukyong National University, Gijang-gun, Busan, 46041, Republic of Korea.
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