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Yu X, Li S, Zhou H, Zhao F, Hu J, Wang J, Liu X, Li M, Zhao Z, Hao Z, Shi B, Hickford JGH. Spatiotemporal Expression and Haplotypes Identification of KRT84 Gene and Their Association with Wool Traits in Gansu Alpine Fine-Wool Sheep. Genes (Basel) 2024; 15:248. [PMID: 38397237 PMCID: PMC10888427 DOI: 10.3390/genes15020248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
Keratin (K) is a major protein component of hair and is involved in hair growth and development. In this study, we analysed the expression, localization, and polymorphism of the K84 gene (KRT84) in Gansu Alpine Fine-wool sheep using immunofluorescence, RT-qPCR, and PARMS (penta-primer amplification refractory mutation system). Haplotypes of KRT84 were also constructed and their relationship with wool traits analysed. It was revealed that KRT84 was highly expressed in hair follicles, including the inner root sheath, outer root sheath, and hair medulla and at all six lamb ages investigated from 1 to 270 days of age. Three SNPs were detected in KRT84 exon 1, and they formed three haplotypes (named H1, H2, and H3) and six genotypes. Analyses revealed an association between haplotype combinations (diplotypes) and the mean fibre curvature, mean staple length, mean staple strength, mean fibre diameter, the coefficient of variation of fibre diameter, and comfort factor for these sheep. These results suggest that KRT84 is of importance in determining several key traits in Gansu Alpine Fine-wool sheep and that the gene could possibly be used as a genetic marker for wool trait selection in these sheep.
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Affiliation(s)
- Xueqin Yu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
| | - Shaobin Li
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
- International Wool Research Institute, Gansu Agricultural University, Lanzhou 730070, China;
| | - Huitong Zhou
- International Wool Research Institute, Gansu Agricultural University, Lanzhou 730070, China;
- Gene-Marker Laboratory, Faculty of Agricultural and Life Sciences, Lincoln University, Lincoln 7647, New Zealand
| | - Fangfang Zhao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
| | - Jiang Hu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
- International Wool Research Institute, Gansu Agricultural University, Lanzhou 730070, China;
| | - Jiqing Wang
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
- International Wool Research Institute, Gansu Agricultural University, Lanzhou 730070, China;
| | - Xiu Liu
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
| | - Mingna Li
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
- International Wool Research Institute, Gansu Agricultural University, Lanzhou 730070, China;
| | - Zhidong Zhao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
| | - Zhiyun Hao
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
| | - Bingang Shi
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (X.Y.); (F.Z.); (J.H.); (J.W.); (X.L.); (M.L.); (Z.Z.); (Z.H.); (B.S.)
| | - Jon G. H. Hickford
- International Wool Research Institute, Gansu Agricultural University, Lanzhou 730070, China;
- Gene-Marker Laboratory, Faculty of Agricultural and Life Sciences, Lincoln University, Lincoln 7647, New Zealand
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Sun H, He Z, Zhao F, Hu J, Wang J, Liu X, Zhao Z, Li M, Luo Y, Li S. Molecular Genetic Characteristics of the Hoxc13 Gene and Association Analysis of Wool Traits. Int J Mol Sci 2024; 25:1594. [PMID: 38338874 PMCID: PMC10855228 DOI: 10.3390/ijms25031594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/23/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
Homobox C13 (Hoxc13) is an important transcription factor in hair follicle cycle development, and its deletion had been found in a variety of animals leading to abnormal hair growth and disruption of the hair follicle system. In this study, we used immunofluorescence, immunohistochemistry, real-time fluorescence quantitative PCR (RT-qPCR), and Kompetitive Allele-Specific PCR (KASP) genotyping to investigate molecular genetic characteristics of the Hoxc13 gene in Gansu alpine fine-wool sheep. The results revealed that Hoxc13 was significantly expressed during both the anagen and catagen phases (p < 0.05). It was found to be highly expressed predominantly in the dermal papillae and the inner and outer root sheaths, showing a distinct spatiotemporal expression pattern. Two single nucleotide polymorphisms (SNPs) in the exon 1 of Hoxc13, both the individual locus genotypes and the combined haplotypes were found to be correlated with wool length (p < 0.05). It was determined the mutations led to changes in mRNA expression, in which higher expression of this gene was related with longer wool length. In summary, this unique spatiotemporal expression pattern of the Hoxc13 gene may regulate the wool length of Gansu alpine fine-wool sheep, which can be used as a molecular genetic marker for wool traits and thus improve the breed.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Shaobin Li
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, Faculty of Animal Science and Technology, International Wool Research Institute, Gansu Agricultural University, Lanzhou 730070, China; (H.S.); (Z.H.); (F.Z.); (J.H.); (J.W.); (X.L.); (Z.Z.); (M.L.); (Y.L.)
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Sun H, He Z, Zhao F, Hu J, Wang J, Liu X, Zhao Z, Li M, Luo Y, Li S. Spatiotemporal Expression Characterization of KRTAP6 Family Genes and Its Effect on Wool Traits. Genes (Basel) 2024; 15:95. [PMID: 38254984 PMCID: PMC10815594 DOI: 10.3390/genes15010095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Keratin-related proteins (KAPs) are structural components of wool fibers and are thought to play a key role in regulating the physical and mechanical properties of fibers. Among all KAP genes (KRTAPs), KRTAP6 gene family (KRTAP6-1, KRTAP6-2, KRTAP6-3, KRTAP6-4, and KRTAP6-5) is a very important member with high polymorphism and notable association with some wool traits. In this study, we used real-time fluorescence quantitative PCR (RT-qPCR) and in situ hybridization to investigate spatiotemporal expression of KRTAP6s. The results revealed that KRTAP6 family genes were significantly expressed during anagen compared to other stages (p < 0.05). And it was found the five genes were expressed predominantly in the dermal papillae, inner and outer root sheaths, and showed a distinct spatiotemporal expression pattern. Also, it was found that KRTAP6-1 and KRTAP6-5 mRNA expression was negatively correlated with wool mean fiber diameter (MFD) and mean staple strength (MSS) (p < 0.05). In summary, the KRTAP6 family genes share a similar spatiotemporal expression pattern. And KRTAP6-1 and KRTAP6-5 may regulate the MFD and MSS of Gansu Alpine fine-wool sheep wool by changing the expression.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Shaobin Li
- Gansu Key Laboratory of Herbivorous Animal Biotechnology, International Wool Research Institute, College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China; (H.S.); (Z.H.); (F.Z.); (J.H.); (J.W.); (X.L.); (Z.Z.); (M.L.); (Y.L.)
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