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Calta J, Zadinová K, Čítek J, Kluzáková E, Okrouhlá M, Stupka R, Tichý L, Machová K, Stratil A, Vostrý L. Possible effects of the MC4R Asp298Asn polymorphism on pig production traits under ad libitum versus restricted feeding. J Anim Breed Genet 2023; 140:207-215. [PMID: 36583444 DOI: 10.1111/jbg.12751] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 12/08/2022] [Indexed: 12/31/2022]
Abstract
The missense mutation Asp298Asn in the melanocortin 4 receptor (MC4R) is associated with daily gain or fatness in pigs (Sus scrofa domesticus). However, to the best of our knowledge, no study has directly compared the effects of the polymorphism between different feeding levels, even though diet plays a vital role in the swine industry. To explore possible differences, data from 439 mostly commercial hybrids fattened ad libitum and 119 commercial hybrids fattened with restricted feed ration were collected. The recorded traits were average daily gain (ADG), feed conversion ratio (FCR), carcass weight (CW), dressing percentage (DP), lean meat content (LM), backfat thickness (BFT), lean cuts weight, and meat quality parameters such as pH, temperature, drip loss, and CIELAB colour space. The general linear model revealed that the overall effect of MC4R was not statistically significant, but significant differences (p < 0.05) were found in ADG, FCR, CW, DP, LM, and BFT. In the ad libitum category, the AA genotype (298Asn/298Asn) tended to be the most favourable for growth-related traits, with the lowest LM, which is consistent with previous findings. In the restricted category, on the other hand, GA heterozygotes (298Asp/298Asn) achieved the best performance in terms of growth, whereas AA homozygotes showed the worst performance. Therefore, these results raise the possibility of an interaction between MC4R and the feeding level.
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Affiliation(s)
- Jan Calta
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Kateřina Zadinová
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Jaroslav Čítek
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Eva Kluzáková
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Monika Okrouhlá
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Roman Stupka
- Department of Animal Science, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Ladislav Tichý
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Karolína Machová
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
| | - Antonín Stratil
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic.,Laboratory of Molecular Ecology, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Liběchov, Czech Republic
| | - Luboš Vostrý
- Department of Genetics and Breeding, Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Prague 6 - Suchdol, Czech Republic
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Dvořáková M, Karafiát V, Pajer P, Kluzáková E, Jarkovská K, Peková S, Krutílková L, Dvořák M. DNA released by leukemic cells contributes to the disruption of the bone marrow microenvironment. Oncogene 2012; 32:5201-9. [PMID: 23222712 DOI: 10.1038/onc.2012.553] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2012] [Revised: 10/01/2012] [Accepted: 10/02/2012] [Indexed: 12/22/2022]
Abstract
Reciprocal interactions between a tumor and its microenvironment control expansion of tumor cells. Here we show a specific type of interaction in which blasts of experimental leukemia destroy the bone marrow (BM) structures and kill stromal cells. The in vitro experiments showed that the cytotoxic agent released by leukemic cells is the fragmented DNA derived from their genome and occurring in nucleosome-like complexes. This DNA entered nuclei of BM or other cells and induced H2A.X phosphorylation at serine 139, similar to double-strand break-inducing agents. There was a correlation between large amounts of acquired DNA and death of recipient cells. Moreover, the DNA integrated into chromosomal DNA of recipient cells. Primary human acute myeloid leukemia cells also released fragmented DNA that penetrated the nuclei of other cells both in vitro and in vivo. We suggest that DNA fragments released from leukemic and also perhaps other types of tumor cells can activate DNA repair mechanisms or death in recipient cells of a tumor microenvironment, depending on the amount of the acquired DNA. This can impair DNA stability and viability of tumor stromal cells, undermine homeostatic capacity of tumor microenvironment and facilitate tumor progression.
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Affiliation(s)
- M Dvořáková
- Institute of Molecular Genetics, AS CR, Prague, Czech Republic
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