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Lopdell TJ, Trevarton AJ, Moody J, Prowse-Wilkins C, Knowles S, Tiplady K, Chamberlain AJ, Goddard ME, Spelman RJ, Lehnert K, Snell RG, Davis SR, Littlejohn MD. A common regulatory haplotype doubles lactoferrin concentration in milk. Genet Sel Evol 2024; 56:22. [PMID: 38549172 PMCID: PMC11234695 DOI: 10.1186/s12711-024-00890-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 03/12/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND Bovine lactoferrin (Lf) is an iron absorbing whey protein with antibacterial, antiviral, and antifungal activity. Lactoferrin is economically valuable and has an extremely variable concentration in milk, partly driven by environmental influences such as milking frequency, involution, or mastitis. A significant genetic influence has also been previously observed to regulate lactoferrin content in milk. Here, we conducted genetic mapping of lactoferrin protein concentration in conjunction with RNA-seq, ChIP-seq, and ATAC-seq data to pinpoint candidate causative variants that regulate lactoferrin concentrations in milk. RESULTS We identified a highly-significant lactoferrin protein quantitative trait locus (pQTL), as well as a cis lactotransferrin (LTF) expression QTL (cis-eQTL) mapping to the LTF locus. Using ChIP-seq and ATAC-seq datasets representing lactating mammary tissue samples, we also report a number of regions where the openness of chromatin is under genetic influence. Several of these also show highly significant QTL with genetic signatures similar to those highlighted through pQTL and eQTL analysis. By performing correlation analysis between these QTL, we revealed an ATAC-seq peak in the putative promotor region of LTF, that highlights a set of 115 high-frequency variants that are potentially responsible for these effects. One of the 115 variants (rs110000337), which maps within the ATAC-seq peak, was predicted to alter binding sites of transcription factors known to be involved in lactation-related pathways. CONCLUSIONS Here, we report a regulatory haplotype of 115 variants with conspicuously large impacts on milk lactoferrin concentration. These findings could enable the selection of animals for high-producing specialist herds.
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Affiliation(s)
- Thomas J Lopdell
- Research & Development, Livestock Improvement Corporation, Ruakura Road, Hamilton, New Zealand.
| | - Alexander J Trevarton
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Janelle Moody
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Claire Prowse-Wilkins
- Agriculture Victoria, AgriBio, Centre for AgriBiosciences, Bundoora, VIC, Australia
- Faculty of Veterinarian and Agricultural Science, The University of Melbourne, Parkville, VIC, Australia
| | - Sarah Knowles
- Auckland War Memorial Museum, Victoria Street West, Auckland, New Zealand
| | - Kathryn Tiplady
- Research & Development, Livestock Improvement Corporation, Ruakura Road, Hamilton, New Zealand
| | - Amanda J Chamberlain
- Agriculture Victoria, AgriBio, Centre for AgriBiosciences, Bundoora, VIC, Australia
| | - Michael E Goddard
- Agriculture Victoria, AgriBio, Centre for AgriBiosciences, Bundoora, VIC, Australia
- Faculty of Veterinarian and Agricultural Science, The University of Melbourne, Parkville, VIC, Australia
| | - Richard J Spelman
- Research & Development, Livestock Improvement Corporation, Ruakura Road, Hamilton, New Zealand
| | - Klaus Lehnert
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Russell G Snell
- School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Stephen R Davis
- Research & Development, Livestock Improvement Corporation, Ruakura Road, Hamilton, New Zealand
| | - Mathew D Littlejohn
- Research & Development, Livestock Improvement Corporation, Ruakura Road, Hamilton, New Zealand
- AL Rae Centre for Genetics and Breeding, Massey University, Palmerston North, New Zealand
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Kinkpe L, Khan R, Suhail SM, Ahmad I, Khan FA, Ayari-Akkari A, Siddiqui S. Polymorphism and association study of lactoferrin (LF) gene with milk yield, milk composition, and somatic cell count in Beetal goats. Trop Anim Health Prod 2023; 55:415. [PMID: 37996555 DOI: 10.1007/s11250-023-03834-7] [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: 08/01/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
The sequence analysis of PCR product exhibited four novel SNPs in the promoter region of the LF gene at loci g.98T>C, g.143T>A, g.189AC>A, and g.346A>G. Each SNP yielded three genotypes; the genotypes TT (SNP1), AA (SNP3), and GG (SNP4) decreased SCC and increase milk quality traits such as density, protein, and milk yield (P < 0.01). The genotype CC (SNP2) and CA (SNP4) significantly (P < 0.01) decreased the milk quality parameters, while genotypes TC (SNP2) and GG (SNP4) showed significantly (P < 0.01) less SCC and increase lactose % in milk. Furthermore, screening of the LF promoter sequence explored the gain of four TF binding sites at locus g.98T˃C and three TF binding sites at g.346A˃G. However, the loss of four and two TF binding sites was seen at locus g.143T˃A and g.189C˃A, respectively. We can conclude from the present study that the GG, TT, and AA genotype might be utilized as genetic markers in marker-assisted selection for the breed improvement program of Beetal goats.
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Affiliation(s)
- Lionel Kinkpe
- Department of Livestock Management, Breeding and Genetics, The University of Agriculture, Peshawar, 25130, Pakistan
| | - Rajwali Khan
- Department of Livestock Management, Breeding and Genetics, The University of Agriculture, Peshawar, 25130, Pakistan.
| | - Syed Muhammad Suhail
- Department of Livestock Management, Breeding and Genetics, The University of Agriculture, Peshawar, 25130, Pakistan
| | - Ijaz Ahmad
- Department of Livestock Management, Breeding and Genetics, The University of Agriculture, Peshawar, 25130, Pakistan
| | - Farhan Anwar Khan
- College of Veterinary Sciences, The University of Agriculture, Peshawar, Pakistan
| | - Amel Ayari-Akkari
- Biology Department, College of Science, King Khalid University, Abha, P.O Box 960, Saudi Arabia
| | - Sazada Siddiqui
- Biology Department, College of Science, King Khalid University, Abha, P.O Box 960, Saudi Arabia
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Lactoferrin gene polymorphisms associated with clinical mastitis in Honduran Holstein inheritance cows. Mol Biol Rep 2023; 50:1949-1952. [PMID: 36385664 DOI: 10.1007/s11033-022-08078-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/01/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND Lactoferrin (LTF) is an iron-binding glycoprotein found in milk and other exocrine secretion with antibacterial activity proposed as an alternative to mastitis treatment or prevention. LTF has been proposed as a candidate gene for mastitis resistance selection. The aim of this paper was to assess LTF promotor to explore variations with potential association to mastitis resistance in dairy cows from Honduras. METHODS A resequencing of promotor and Exon I of LTF gene in extreme mastitis susceptibility cows (126 Holstein and Holstein crossbred) was performed. RESULTS Eight polymorphisms were found in promotor region, four of them were novel variations. Two were important by frequency among extreme groups, but a polymorphism in - 421 A/T position was significantly (P = 0.0188) associated to mastitis susceptibility. CONCLUSION Results support the key role of regulatory region of LTF gene. Some candidate genes are proposed in association with mastitis traits and implications are discussed.
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Waminal YO, Tubalinal GASP, Mingala CN. Molecular characterization and association of lactoferrin gene to subclinical mastitis in goats (Capra hircus). ACTA SCIENTIARUM: ANIMAL SCIENCES 2022. [DOI: 10.4025/actascianimsci.v44i1.56368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The study characterized the lactoferrin (Lf) mRNA gene in different goat breeds in the Philippines and determined its association with subclinical mastitis (SCM). The study involved collection of milk at second week of lactation (n=75) and blood samples (n=5) to obtain extracted RNA and using cDNA to amplify Lf gene through polymerase chain reaction. The nucleotide and amino acid sequences were determined and used as reference in the evaluation of phylogenetic relationship. Amplified products were utilized for RFLP analysis before determining the association of the gene with SCM. Results of the study demonstrated that Lf gene in goats registered a molecular weight of 2135. Nucleotide and amino acid sequence of Lf gene revealed high similarity (99%) in Saanen, Anglo-Nubian and Philippine native goats with that of Capra hircus (U53857) Lf gene submitted to GenBank. Phylogenetic studies showed that Lf gene of Anglo-Nubian, Saanen and Native goats clade together with Lf gene of C. hircus (U53857). Three genotypes in goats were documented using the restriction enzymes AluI and HaeIII. Based on the Statistical analysis, association (comp 5.65, p = 0.0308) has been established between the Lf genes of goats with genotype BB to SCM using HaeIII restriction enzyme.
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Sharma A, Shandilya UK, Sodhi M, Mohanty AK, Jain P, Mukesh M. Evaluation of Milk Colostrum Derived Lactoferrin of Sahiwal ( Bos indicus) and Karan Fries (Cross-Bred) Cows for Its Anti-Cancerous Potential. Int J Mol Sci 2019; 20:E6318. [PMID: 31847364 PMCID: PMC6940737 DOI: 10.3390/ijms20246318] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/26/2019] [Accepted: 10/30/2019] [Indexed: 01/01/2023] Open
Abstract
Lactoferrin (Lf) is an iron-binding glycoprotein protein known to have immune-modulatory role and recently, its anticancerous effect against different cancer cell types was emphasized. In the present investigation, a comparative evaluation of anticancer potential of colostrum-derived lactoferrin from Indian native zebu cow (Sahiwal, SAC), crossbred (Karan Fries, KFC) and commercially available (C-Lf) lactoferrin from exotic cow using cellular models was made. A protocol was standardized successfully to purify Lf protein from colostrum of both breeds using HPLC and purity was confirmed by LC-MS. A standardized dose of 750 µg/mL Lf was used to treat two cell types MDA-MB-231 and MCF-7 with Lf from three different sources; SAC-Lf, KFC-Lf and C-Lf for 48 h and 72 h. Different cellular parameters including cytotoxicity, viability, apoptosis and cell proliferation were determined. Comparatively, Lf from commercial source (C-Lf) had maximum effect in both cell types followed by SAC-Lf and KFC-Lf. Further, transcriptional changes in genes associated with apoptosis (Bax and Bcl-2), tumor progression (p53, p21, CD44 and NF-κβ) and survival (survivin) were evaluated in Lf treatment. The overall results strongly emphasized to the fact that Lf purified from cow colostrum has the capacity to inhibit the in vitro growth of cancerous cell lines albeit to a varied extent.
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Affiliation(s)
- Ankita Sharma
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132001, India; (A.S.); (U.K.S.); (M.S.)
- University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra 136118, India;
- Department of Animal Biosceinces, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Umesh K Shandilya
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132001, India; (A.S.); (U.K.S.); (M.S.)
- Department of Animal Biosceinces, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Monika Sodhi
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132001, India; (A.S.); (U.K.S.); (M.S.)
| | - Ashok K Mohanty
- ICAR-National Dairy Research Institute, Karnal, Haryana 132001, India;
| | - Pranay Jain
- University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra 136118, India;
| | - Manishi Mukesh
- ICAR-National Bureau of Animal Genetic Resources, Karnal 132001, India; (A.S.); (U.K.S.); (M.S.)
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El-Domany WB, Radwan HA, Ateya AI, Ramadan HH, Marghani BH, Nasr SM. Genetic Polymorphisms in LTF/EcoRI and TLR4/AluI loci as candidates for milk and reproductive performance assessment in Holstein cattle. Reprod Domest Anim 2019; 54:678-686. [PMID: 30663809 DOI: 10.1111/rda.13408] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 01/14/2019] [Indexed: 11/29/2022]
Abstract
The aim of this study was to explore the genetic polymorphisms in LTF/EcoRI and TLR4/AluI loci and their association with milk and reproductive performance in Holstein cattle. A randomly selected 800 Holstein dairy cows from two dairy farms (400 animals each) in Egypt were used. Based on the two farm records, association between LTF/EcoRI genotypes and milk performance traits (order of lactation, daily milk yield, days in milk, corrected milk at 305 day and dry period) was carried out. Meanwhile, exploring of TLR4/AluI genotypes effect was done on data for reproductive performance (age at first freshening, calving interval, number of services per conception, ovarian rebound and days open). DNA was extracted from blood samples collected from Holstein dairy cows of the both farms and restriction analysis of 301-bp PCR products of LTF gene revealed two genotypes: AA genotype (301 bp) and AB genotype (301, 201 and 100 bp). Meanwhile, restriction analysis of 382-bp PCR products of TLR4 gene digested with AluI yielded two alleles (A and B) and three genotypes (AA, AB and BB). The A allele was indicated by two bands at 300 and 82 bp, and the B allele resulted in three fragments of 160, 140 and 82 bp. There was a significant association (p ≤ 0.05) between LTF genotypes and milk performance traits except for days in milk. The TLR4 genotypes had significant effects (p ≤ 0.05) on age at first freshening, calving interval, number of services per conception, ovarian rebound and days open. Ordinal logistic regression statistical model also revealed that it is possible to calculate high reproductive performance traits and to predict favourable dairy cows based on LTF and TLR4 genotypes. This research reveals the effectiveness of LTF/EcoRI and TLR4/AluI loci as candidates for reproductive performance assessment in Holstein cattle.
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Affiliation(s)
- Wael B El-Domany
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Hend A Radwan
- Department of Animal Husbandry and Wealth Development, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Ahmed I Ateya
- Department of Animal Husbandry and Wealth Development, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Hazem H Ramadan
- Department of Hygiene and Zoonoses, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Basma H Marghani
- Department of Physiology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Sherif M Nasr
- Department of Animal Husbandry and Wealth Development, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt
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Pauciullo A, Ramunno L, Macciotta NPP, Gaspa G, Coletta A, Apicella E, Gallo D, Cosenza G. Genetic variability detected at the lactoferrin locus (LTF) in the Italian Mediterranean river buffalo. ANIMAL PRODUCTION SCIENCE 2016. [DOI: 10.1071/an14612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Lactoferrin (LTF) is a multi-functional protein belonging to the whey protein fractions of milk. The gene LTF encoding for such protein is considered a potential candidate for body measurement, milk composition and yield. This study reports on the genetic variability at the LTF locus in the Italian Mediterranean river buffalo and its possible association with milk yield. Eleven polymorphic sites were found in the DNA fragment spanning exons 15–16. In particular, intron 15 was extremely polymorphic with nine single nucleotide polymorphisms (SNPs) detected, whereas the remaining two SNPs were exonic mutations (g.88G > A at exon 15 and g.1351G > A at exon 16) and both synonymous. The genotyping of the informative samples evidenced three haplotypes, whose frequencies were 0.6, 0.3 and 0.1, respectively, whereas the analysis of the exonic SNPs showed a perfect condition of linkage disequilibrium (g.88A/g.1351G and g.88G/g.1351A). The association study carried out by using the SNP g.88G > A showed that buffalo LTF gene has no statistically significant influence on daily milk yield. This study adds knowledge to the genetic variability of a species less investigated than the other ruminant species. These findings may serve as a useful tool for large-scale screening of buffalo populations.
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8
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Mao Y, Zhu X, Xing S, Zhang M, Zhang H, Wang X, Karrow N, Yang L, Yang Z. Polymorphisms in the promoter region of the bovine lactoferrin gene influence milk somatic cell score and milk production traits in Chinese Holstein cows. Res Vet Sci 2015; 103:107-12. [PMID: 26679804 DOI: 10.1016/j.rvsc.2015.09.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Revised: 09/23/2015] [Accepted: 09/27/2015] [Indexed: 12/16/2022]
Abstract
Lactoferrin is an iron-binding protein found in cow's milk that plays an important role in preventing mastitis caused by intramammary infection. In this study, 20 Chinese Holstein cows were selected randomly for PCR amplification and sequencing of the bovine lactoferrin gene promoter region and used for SNP discovery in the region between nucleotide positions -461 to -132. Three SNPs (-270T>C, -190G>A and -156A>G) were identified in bovine lactoferrin, then Chinese Holstein cows (n=866) were genotyped using Sequenom MassARRAY (Sequenom Inc., San Diego, CA) based on the previous SNP information in this study, and the associations between SNPs or haplotype and milk somatic cell score (SCS) and production traits were analyzed by the least squares method in the GLM procedure of SAS. SNPs -270T>C and -156A>G showed close linkage disequilibrium (r(2)=0.76). The SNP -190G>A showed a significant association with SCS, and individuals with genotype GG had higher SCS than genotypes AG and AA. Associations were found between the SNPs -270T>C and -190G>A with SCS and the milk composition. The software MatInspector revealed that these SNPs were located within several potential transcription factor binding sites, including NF-κB p50, KLF7 and SP1, and may alter gene expression, but further investigation will be required to elucidate the biological and practical relevance of these SNPs.
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Affiliation(s)
- Yongjiang Mao
- College of Animal Science and Technology, Yangzhou University, 225009 Yangzhou, PR China; College of Animal Science and Technology, Huazhong Agricultural University, 430070 Wuhan, PR China.
| | - Xiaorui Zhu
- College of Animal Science and Technology, Yangzhou University, 225009 Yangzhou, PR China
| | - Shiyu Xing
- College of Animal Science and Technology, Yangzhou University, 225009 Yangzhou, PR China
| | - Meirong Zhang
- College of Animal Science and Technology, Yangzhou University, 225009 Yangzhou, PR China
| | - Huimin Zhang
- College of Animal Science and Technology, Yangzhou University, 225009 Yangzhou, PR China
| | - Xiaolong Wang
- College of Animal Science and Technology, Yangzhou University, 225009 Yangzhou, PR China
| | - Niel Karrow
- Center for Genetic Improvement of Livestock, Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Liguo Yang
- Center for Genetic Improvement of Livestock, Department of Animal and Poultry Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Zhangping Yang
- College of Animal Science and Technology, Yangzhou University, 225009 Yangzhou, PR China
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Pawlik A, Sender G, Sobczyńska M, Korwin-Kossakowska A, Lassa H, Oprządek J. Lactoferrin gene variants, their expression in the udder and mastitis susceptibility in dairy cattle. ANIMAL PRODUCTION SCIENCE 2015. [DOI: 10.1071/an13389] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Lactoferrin gene (LF) is regarded as one of the potential markers of mastitis susceptibility/resistance in dairy cattle. The study’s aim was therefore, to investigate the feasibility of two single nucleotide polymorphisms (SNP), placed in the 5′-flanking region and 3′-untranslated region of the LF gene, to serve as mastitis markers. The associations between these SNP and the expression of LF, both on mRNA and protein level, were estimated in the milk of Polish Holstein-Friesian cows. The relationships between polymorphisms and cows’ estimated breeding values (EBV) for somatic cell count were also calculated. It was shown that both polymorphisms have a significant impact on lactoferrin content in milk, and that LF+32 SNP is associated with the cow’s EBV for somatic cell count. No association between SNP chosen for the study and lactoferrin mRNA abundance in milk somatic cells was observed. We propose LF+32 SNP for a molecular marker of mastitis resistance in dairy cows.
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Analysis of polymorphisms in the lactotransferrin gene promoter and dental caries. Int J Dent 2011; 2011:571726. [PMID: 22190933 PMCID: PMC3235467 DOI: 10.1155/2011/571726] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 09/09/2011] [Accepted: 09/09/2011] [Indexed: 01/19/2023] Open
Abstract
Regarding host aspects, there has been strong evidence for a genetic component in the etiology of caries. The salivary protein lactotransferrin (LTF) exhibits antibacterial activity, but there is no study investigating the association of polymorphisms in the promoter region of LTF gene with caries. The objective of this study was firstly to search the promoter region of the human LTF gene for variations and, if existent, to investigate the association of the identified polymorphisms with dental caries in 12-year-old students. From 687 unrelated, 12-year-old, both sex students, 50 individuals were selected and divided into two groups of extreme phenotypes according to caries experience: 25 students without (DMFT = 0) and 25 with caries experience (DMFT ≥ 4). The selection of individuals with extreme phenotypes augments the chances to find gene variations which could be associated with such phenotypes. LTF gene-putative promoter region (+39 to −1143) of the selected 50 individuals was analyzed by high-resolution melting technique. Fifteen students, 8 without (DMFT = 0) and 7 with caries experience (mean DMFT = 6.28), presented deviations of the pattern curve suggestive of gene variations and were sequenced. However, no polymorphisms were identified in the putative promoter region of the LTF gene.
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Bahar B, O'Halloran F, Callanan MJ, McParland S, Giblin L, Sweeney T. Bovine lactoferrin (LTF) gene promoter haplotypes have different basal transcriptional activities. Anim Genet 2011; 42:270-9. [PMID: 21554347 DOI: 10.1111/j.1365-2052.2010.02151.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Genetic polymorphisms present in the bovine lactoferrin (LTF) gene promoter have the potential to affect milk lactoferrin concentrations. The objectives were: (1) to identify, in silico, SNPs in the promoter region of the LTF gene that could affect transcription factor binding activity, (2) to investigate the effects of these SNPs in vitro by measuring promoter transcriptional activities of different bovine LTF promoter haplotypes and (3) to investigate the genetic association between LTF promoter SNPs and milk lactoferrin concentration. Haplotypes were deduced from sequencing of the 2.2-kb bovine LTF promoter in 78 unrelated animals. In silico analysis of the 2.2-kb promoter revealed two major haplotypes (BtLTF_H1a and BtLTF_H2a) that differed at 10 SNP loci that affect transcription factors of both a constitutive (at -28, -1702) and an inducible (at -131, -270, -586, -2047, -2077, -2122, -2140 and -2151) nature. The basal promoter transcriptional activity of BtLTF_H1a was 1.44-fold higher than that of BtLTF_H2a in mammary epithelial cells. Cows with the BtLTF_H1a haplotype had increased lactoferrin protein concentration in milk at various time points over the lactation curves, compared to herdmates with the BtLTF_H2a haplotype. The SNPs c.-28A>C, c.-131T>C, c.-156A>G, c.-270T>C, c.-586C>T, c.-1702A>G, c.-1953G>A, c.-2047A>G, c.-2077A>G, c.-2122C>T, c.-2140A>G and c.-2151G>A were associated (P < 0.001) with milk lactoferrin content in 372 Holstein-Friesian cows. The identification of bovine LTF promoter haplotypes with different basal transcriptional activities in vitro that are associated with lactoferrin levels in milk in vivo may facilitate the identification of designer dairy herds for increased lactoferrin content in milk.
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Affiliation(s)
- B Bahar
- Cell and Molecular Biology Laboratory, School of Agriculture, Food Science and Veterinary Medicine, Veterinary Science Centre, University College Dublin, Belfield, Ireland
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Suslov VV, Ponomarenko PM, Ponomarenko MP, Drachkova IA, Arshinova TV, Savinkova LK, Kolchanov NA. TATA box polymorphisms in genes of commercial and laboratory animals and plants associated with selectively valuable traits. RUSS J GENET+ 2010. [DOI: 10.1134/s1022795410040022] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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O’Halloran F, Berry D, Bahar B, Howard D, Sweeney T, Giblin L. Polymorphisms in the bovine lactoferrin promoter are associated with reproductive performance and somatic cell count. J Dairy Sci 2010; 93:1253-9. [DOI: 10.3168/jds.2009-2699] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Accepted: 11/10/2009] [Indexed: 02/05/2023]
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Huang J, Wang H, Wang C, Li J, Li Q, Hou M, Zhong J. Single nucleotide polymorphisms, haplotypes and combined genotypes of lactoferrin gene and their associations with mastitis in Chinese Holstein cattle. Mol Biol Rep 2009; 37:477-83. [PMID: 19672694 DOI: 10.1007/s11033-009-9669-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Accepted: 07/27/2009] [Indexed: 11/28/2022]
Abstract
Lactoferrin (Lf) is naturally produced by the mammary gland, having biological functions of antibacterial and anti-inflammatory activities. To investigate whether the Lf gene is associated with mastitis in dairy cattle, a DNA sequencing approach was used to identify single nucleotide polymorphisms (SNPs) in the gene. Three previously reported SNPs in the 5' flanking region and one novel SNP in exon1 of Lf gene were identified. A total of 353 individuals from Holstein cattle populations were genotyped for their SNPs using Created Restriction Site PCR (CRS-PCR) and PCR-RFLP methods. Twenty-two and nineteen combinations of three SNPs (g.3440T>G, g.3879_3880insG, and g.4432T>C) and another three SNPs (g.3429G>A, g.3440T>G, g.3879_3880insG) were observed, respectively. The result of haplotype analysis of four SNPs showed that fourteen different haplotypes were identified. Two major haplotypes (GECB and GECA) occurred with a frequency of 22.5 and 18.5% in the study population, respectively. Statistical analyses revealed no significant association between one single SNP of Lf gene and SCS, whereas significant associations between their combined genotypes of three SNPs, haplotype and SCS. Combined genotype EFCDBB and GGEFDD with the lowest SCS were favorable for the mastitis resistance. They may be used as a possible candidate for marker-assisted selection in dairy cattle breeding program.
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Affiliation(s)
- Jinming Huang
- Center of Dairy Cattle Research, Shandong Academy of Agricultural Science, Jinan, People's Republic of China
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Genetic polymorphism in 5′-flanking region of the lactoferrin gene and its associations with mastitis in Chinese Holstein cows. YI CHUAN = HEREDITAS 2009; 31:393-9. [DOI: 10.3724/sp.j.1005.2009.00393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kathiravan P, Kataria R, Mishra B. Single nucleotide polymorphism (SNP) identification and sequence analysis of 5′ flanking region of lactoferrin gene in Indian buffaloes (Bubalus bubalis). Livest Sci 2009. [DOI: 10.1016/j.livsci.2008.05.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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