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Song N, Cui K, Zeng L, Fan Y, Wang Z, Shi P, Su W, Wang H. Calpain 8 as a potential biomarker regulates the progression of pancreatic cancer via EMT and AKT/ERK pathway. J Proteomics 2024; 301:105182. [PMID: 38697284 DOI: 10.1016/j.jprot.2024.105182] [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: 03/04/2024] [Revised: 04/18/2024] [Accepted: 04/26/2024] [Indexed: 05/04/2024]
Abstract
Calpain is a non-lysozyme, calcium-dependent intracellular cysteine protease that has been shown to play a role in tumor proliferation, survival, migration, invasion, and apoptosis. Dysregulation of calpain expression is closely related to tumorigenesis. However, the role of calpain-8 (CAPN8), as a member of the calpain family, in pancreatic cancer (PC) is remains unclear. In elucidating the mechanism of CAPN8 in PC, a comprehensive bioinformatics analysis and in vitro experiments were conducted. The TCGA database was used to explore the expression level of CAPN8, and the results in PC tissues and cell lines were verified. Then, the correlation between CAPN8 and clinicopathological features was analyzed. Additionaly, promoter methylation, immune infiltration, and GO/KEGG enrichment analyses were performed. Lastly, the molecular mechanism of CAPN8 in PC was investigated by using cell counting kit (CCK) 8, transwell, wound healing, Western blot assays, and so on. Results indicate that CAPN8 was highly expressed in PC and correlated with poor prognosis and advanced TNM stage. In addition, a low level of immune infiltration was closely associated with the high expression level of CAPN8. Based on these findings, we hypothesized that CAPN8 is a potential biomarker that regulates progression of PC via EMT and the AKT/ERK pathway. SIGNIFICANCE: Through comprehensive biological information and in vitro experiments, CAPN8 has been confirmed to play an important role in regulating pancreatic cancer (PC) proliferation, migration and invasion. CAPN8 is found to be closely related to the diagnosis, survival and prognosis of PC. Above all, CAPN8 may be a potential biomarker for the diagnosis and prognosis of PC.
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Affiliation(s)
- Na Song
- Department of Pathology, Xinxiang Key Laboratory of Tumor Precision Medicine, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China; Department of Pathology, Xinxiang Medical University, Xinxiang 453000, China
| | - Kai Cui
- Department of Pathology, Xinxiang Medical University, Xinxiang 453000, China
| | - Liqun Zeng
- Department of Pathology, Xinxiang Medical University, Xinxiang 453000, China
| | - Yanwu Fan
- Department of Pathology, Xinxiang Medical University, Xinxiang 453000, China
| | - Ziwei Wang
- Department of Pathology, Xinxiang Medical University, Xinxiang 453000, China
| | - Pingyu Shi
- Department of Pathology, Xinxiang Medical University, Xinxiang 453000, China
| | - Wei Su
- Department of Pathology, Xinxiang Key Laboratory of Tumor Precision Medicine, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China.
| | - Haijun Wang
- Department of Pathology, Xinxiang Key Laboratory of Tumor Precision Medicine, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang 453100, China; Department of Pathology, Xinxiang Medical University, Xinxiang 453000, China.
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2
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Abstract
In recent years there has been a shift in emphasis in livestock production away from increased muscle growth towards improved meat quality. The final eating quality of meat depends on a number of organoleptic properties including appearance, colour, fat content, taste, texture and tenderness. Whilst colour and fat content are important in influencing meat purchase, consumer studies indicate that it is the degree to which muscle tenderises after slaughter that is the most important factor contributing to overall meat quality (Warkupet al, 1995). Despite efforts to standardise breeding, husbandry, nutrition, transport, lairage and slaughter regimes, ensuring a consistently tender product still remains difficult to control or predict. The problem is international, with beefsteak toughness a major concern in the USA and pork toughness difficult to eradicate in the UK. The tenderisation process involves complex changes in muscle metabolism in the immediate post slaughter period and is dependent on genetic makeup, protein complement, metabolic status and environmental factors such as physiological stress. In the early postmortem period, glycogen depletion, lactic acid accumulation, pH decline and rate of entry and exit into rigor can all influence the ultimate tenderness of the meat some 8 - 20 days later following a period of conditioning (Gollet al, 1995). However, the main determinant of ultimate tenderness appears to be the extent of proteolysis of key target proteins within muscle fibres (Tayloret al, 1995). Research in all major livestock species has pointed to the calpain proteolytic enzyme family being a major factor responsible for key peptide bond cleavage (Koohmaraie, 1996). Whilst opinion is divided as to which isoform of calpain is the most important under specified conditions, most workers agree that the major factor is the level at slaughter of the specific calpain inhibitor calpastatin. The evidence for this is reviewed here, highlighting potential means of regulating the system in order to assure a consistently high quality tender product.
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3
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Metzger J, Tonda R, Beltran S, Agueda L, Gut M, Distl O. Next generation sequencing gives an insight into the characteristics of highly selected breeds versus non-breed horses in the course of domestication. BMC Genomics 2014; 15:562. [PMID: 24996778 PMCID: PMC4097168 DOI: 10.1186/1471-2164-15-562] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 06/24/2014] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Domestication has shaped the horse and lead to a group of many different types. Some have been under strong human selection while others developed in close relationship with nature. The aim of our study was to perform next generation sequencing of breed and non-breed horses to provide an insight into genetic influences on selective forces. RESULTS Whole genome sequencing of five horses of four different populations revealed 10,193,421 single nucleotide polymorphisms (SNPs) and 1,361,948 insertion/deletion polymorphisms (indels). In comparison to horse variant databases and previous reports, we were able to identify 3,394,883 novel SNPs and 868,525 novel indels. We analyzed the distribution of individual variants and found significant enrichment of private mutations in coding regions of genes involved in primary metabolic processes, anatomical structures, morphogenesis and cellular components in non-breed horses and in contrast to that private mutations in genes affecting cell communication, lipid metabolic process, neurological system process, muscle contraction, ion transport, developmental processes of the nervous system and ectoderm in breed horses. CONCLUSIONS Our next generation sequencing data constitute an important first step for the characterization of non-breed in comparison to breed horses and provide a large number of novel variants for future analyses. Functional annotations suggest specific variants that could play a role for the characterization of breed or non-breed horses.
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Affiliation(s)
| | | | | | | | | | - Ottmar Distl
- Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Bünteweg 17p, 30559 Hannover, Germany.
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4
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Haplotype association of calpain 10 gene variants with type 2 diabetes mellitus in an Irish sample. Ir J Med Sci 2010; 179:269-72. [DOI: 10.1007/s11845-010-0462-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2009] [Accepted: 01/03/2010] [Indexed: 01/16/2023]
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5
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Delbarre-Ladrat C, Chéret R, Taylor R, Verrez-Bagnis V. Trends in Postmortem Aging in Fish: Understanding of Proteolysis and Disorganization of the Myofibrillar Structure. Crit Rev Food Sci Nutr 2006; 46:409-21. [PMID: 16891212 DOI: 10.1080/10408390591000929] [Citation(s) in RCA: 165] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Postmortem tenderization is caused by enzymatic degradation of key structural proteins in myofibrils as well as in extracellular matrix, and of proteins involved in intermyofibrillar linkages and linkages between myofibrils and the sarcolemma. The function of these proteins is to maintain the structural integrity of myofibrils. Current data indicate that calpains and cathepsins may be responsible for degradation of these proteins. Other phenomena occurring in cells postmortem (pH drop, sarcoplasmic Ca2+ increase, osmotic pressure rise, oxidative processes) may act in synergy with proteases. Our understanding of the underlying mechanisms of muscle degradation should be improved for an accurate evaluation of the postmortem muscle changes and consequently of the fish quality.
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6
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Abstract
The calpain family of proteases has been implicated in cellular processes such as apoptosis, proliferation and cell migration. Calpains are involved in several key aspects of migration, including: adhesion and spreading; detachment of the rear; integrin- and growth-factor-mediated signaling; and membrane protrusion. Our understanding of how calpains are activated and regulated during cell migration has increased as studies have identified roles for calcium and phospholipid binding, autolysis, phosphorylation and inhibition by calpastatin in the modulation of calpain activity. Knockout and knockdown approaches have also contributed significantly to our knowledge of calpain biology, particularly with respect to the specific functions of different calpain isoforms. The mechanisms by which calpain-mediated proteolysis of individual substrates contributes to cell motility have begun to be addressed, and these efforts have revealed roles for proteolysis of specific substrates in integrin activation, adhesion complex turnover and membrane protrusion dynamics. Understanding these mechanisms should provide avenues for novel therapeutic strategies to treat pathological processes such as tumor metastasis and chronic inflammatory disease.
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Affiliation(s)
- Santos J Franco
- Program in Cellular and Molecular Biology, University of Wisconsin, Madison, WI 53705, USA
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7
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Markmann A, Schäfer S, Linz W, Löhn M, Busch AE, Wohlfart P. Down-Regulation of Calpain 9 is Linked to Hypertensive Heart and Kidney. Cell Physiol Biochem 2005; 15:109-16. [PMID: 15665521 DOI: 10.1159/000083643] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2004] [Indexed: 11/19/2022] Open
Abstract
Calpains are a family of 14 intracellular calcium-dependent proteases, which have been implicated in cardiovascular diseases. We aimed to analyze specifically the expressional regulation of the different calpain isoforms in hypertensive target organ damage. Using real-time PCR, we found calpain 6 and 9 down-regulated by more than 50% and the endogenous calpain inhibitor calpastatin up-regulated by 225%, respectively, in the hearts of Dahl salt-sensitive rats on a high salt (4% NaCl) compared to normal salt diet. On the protein level, calpain 9 but not calpastatin was regulated in the hypertensive target organs heart and kidney. Moreover, the myocardial expression of calpain 9 protein was inversely linked to left ventricular mass (r= -0.93, p<0.01), and renal expression of calpain 9 protein correlated inversely with albuminuria (r= -0.82, p<0.05). In the aorta, there was no regulation of calpain 9 on the protein level. We conclude that differential regulation of calpain 9 may play a role in hypertensive target organ damage.
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Affiliation(s)
- André Markmann
- Aventis Pharma Deutschland GmbH, DG Cardiovascular Diseases, Building H825, Industriepark Höchst, Frankfurt am Main, Germany
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8
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Abstract
Calpains are calcium-modulated proteases which respond to Ca2+ signals by removing limited portions of protein substrates, thereby irreversibly modifying their function(s). Members of this protease family are present in a variety of organisms ranging from mammals to plants; some of them are ubiquitously expressed, while others are tissue specific. Although calpains are apparently involved in a multitude of physiological and pathological events, their functions are still poorly understood. In two cases, however, the alteration of a member of the calpain family has been clearly identified as being responsible for a human disease: the loss of function of calpain 3 causes limb girdle muscular dystrophy type 2A, and mutations in the gene coding for calpain 10 have been shown to correlate with non-insulin-dependent diabetes.
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Affiliation(s)
- Donata Branca
- Dipartimento di Chimica Biologica, Università di Padova and Venetian Institute of Molecular Medicine, Viale G. Colombo 3, 35121 Padua, Italy.
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9
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Franz T, Winckler L, Boehm T, Dear TN. Capn5 is expressed in a subset of T cells and is dispensable for development. Mol Cell Biol 2004; 24:1649-54. [PMID: 14749380 PMCID: PMC344194 DOI: 10.1128/mcb.24.4.1649-1654.2004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2003] [Revised: 11/13/2003] [Accepted: 11/19/2003] [Indexed: 11/20/2022] Open
Abstract
The Capn5 gene was inactivated by homologous recombination in ES cells that subsequently colonized the germ line of mice. The targeted mutation integrated a lacZ expression cassette into the Capn5 gene, allowing the expression of Capn5 mRNA to be examined in detail in heterozygous animals. Expression was observed in embryonic and newborn thymuses, in various epithelial tissues, and in tissues of the central nervous system. In the thymus, Capn5 was expressed mainly in relatively immature CD25(+) embryonic thymocytes. Despite the numerous expression sites of Capn5, the majority of Capn5-null mice were viable and fertile and appeared healthy. Histopathological analysis did not reveal any differences between Capn5-null and wild-type mice. There were no defects in the major T- or B-cell populations in the thymus, spleen, bone marrow, or peritoneum, nor did apoptosis appear abnormal in Capn5-null T cells. There was no evidence for the development of autoimmune disease in Capn5-null animals. However, a small proportion of homozygous null offspring from heterozygous matings were runted and most often did not survive to adulthood.
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Affiliation(s)
- Tanna Franz
- Department of Developmental Immunology, Max Planck Institute for Immunobiology, D-79108 Freiburg, Germany
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10
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Abstract
Variation in the calpain 10 gene has recently been shown to be associated with type 2 diabetes by positional cloning. Since then, studies on calpain 10 have been started in correlation with diabetes and insulin-mediated signaling. In this review, the activation mechanism of calpain by calcium ions, which is essential to understand its physiological functions, is discussed on the basis of recent X-ray structural analyses. Further, special features of the structure of calpain 10 that differ from those of typical micro - or m-calpain used in most studies are summarized together with discussion of the physiological function of calpain with respect to type 2 diabetes.
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Affiliation(s)
- Koichi Suzuki
- Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
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11
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Affiliation(s)
- D L Mykles
- Department of Biology, Cell and Molecular Biology Program and Molecular, Cellular, and Integration Neurosciences Program, Colorado State University, Fort Collins, Colorado 80523, USA
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12
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Abstract
Calpains are a family of related proteins, some of which have been shown to function as calcium-dependent cysteine proteases. CAPN1 and CAPN2, the most well characterized calpains, consist of a large (80 kDa) and a small (30 kDa) subunit. In mammals, 11 different paralogous genes encoding calpain large subunits have been identified. We report the identification of two further genes, CAPN13 and CAPN14, potentially encoding calpain large subunits. Radiation hybrid mapping localized both genes within a region mapped to 2p21-2p22. The CAPN13 mRNA exhibits a restricted tissue distribution with low levels of expression detected only in human testis and lung while CAPN14 mRNA could not be detected in any of the 76 tissues examined. Examination of the human genome sequence in the public and private consortia databases did not detect any further members of this gene family. Thus, there would seem to be 13 large subunit calpain genes in the human genome. Phylogenetic analysis reveals that the putative calpain large subunit proteins can be divided into three major groups. The 13 human large subunit genes and the single small subunit gene are located in eight syntenic groups on chromosomes 1, 2, 3, 6, 11, 15, 19 and X.
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Affiliation(s)
- T N Dear
- Department of Developmental Immunology, Max-Planck Institute for Immunobiology, Stuebeweg 51, D-79108 Freiburg, Germany.
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13
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Abstract
The number of mammalian calpain protease family members has grown to 14 on last count. Overactivation of calpain 1 and calpain 2 (and their small subunit) has long been tied to acute neurological disorders (e.g. stroke and traumatic brain injury) and recently to Alzheimer's disease. Loss-of-function mutations of the calpain 3 gene have now been identified as the cause of limb-girdle muscular dystrophy 2A. Calpain 10 was recently identified as a susceptibility gene for type 2 diabetes, whereas calpain 9 appears to be a gastric cancer suppressor. This review describes our current understanding of the calpain family members and their mechanistic linkages to the aforementioned diseases as well as other emerging pathological conditions.
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Affiliation(s)
- Y Huang
- Laboratory of Neuro-biochemistry, Dept. of CNS Molecular Sciences, Pfizer Global Research & Development, 2800 Plymouth Road, Ann Arbor, MI 48105, USA
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14
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Ma H, Fukiage C, Kim YH, Duncan MK, Reed NA, Shih M, Azuma M, Shearer TR. Characterization and expression of calpain 10. A novel ubiquitous calpain with nuclear localization. J Biol Chem 2001; 276:28525-31. [PMID: 11375982 DOI: 10.1074/jbc.m100603200] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Calpains are calcium-dependent intracellular nonlysosomal proteases that are believed to hydrolyze specific substrates important in calcium-regulated signaling pathways. Recently, an atypical member of the calpain family, calpain 10, was described, and genetic variation in this gene was associated with an increased risk of type II diabetes mellitus in humans. In the present report, a polyclonal antibody directed against rat calpain 10 was developed. This antibody was used to monitor the expression of calpain 10 protein in tissues from rats, mice, and humans. Calpain 10 protein was found to be present in all tissues examined by Western blotting including the lens, retina, brain, heart, and skeletal muscle. Although some calpain 10 was detectable in the water-soluble protein fraction of these tissues, it was preferentially found in the water-insoluble fraction. In the lens, immunohistochemistry revealed that calpain 10 was predominately located in the cytoplasm of epithelial and newly differentiating lens fibers at the transition zone. However, calpain 10 was found to be associated with the plasma membrane of differentiated lens fiber cells and the sarcolemma of skeletal muscle. In the lens epithelium-derived cell line, alphaTN4-1, the calpain 10 protein was found in a punctate distribution in the cell nucleus as well as the cytoplasm. After the elevation of intracellular calcium levels with ionomycin, calpain 10 protein levels in the nucleus of alphaTN4-1 cells increased markedly, whereas those in the cytoplasm decreased. In the lens, the elevation of intracellular calcium levels after selenite administration resulted in increased levels of calpain 10 RNA within 1 day and a loss of calpain 10 protein from the lens nucleus coincident with the onset of selenite cataract. In conclusion, calpain 10 seems to be a ubiquitous calpain, the expression level and subcellular distribution of which are dynamically influenced by calcium.
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MESH Headings
- Adult
- Age Factors
- Aged
- Aged, 80 and over
- Animals
- Baculoviridae/metabolism
- Blotting, Western
- Brain/metabolism
- Calcium/metabolism
- Calpain/biosynthesis
- Calpain/chemistry
- Cataract/metabolism
- Cell Line
- Cell Nucleus/metabolism
- Child
- Child, Preschool
- Cloning, Molecular
- Cytoplasm/metabolism
- DNA, Complementary/metabolism
- Disease Models, Animal
- Humans
- Immunoblotting
- Immunohistochemistry
- Ionomycin/pharmacology
- Ionophores/pharmacology
- Lens, Crystalline/embryology
- Lens, Crystalline/metabolism
- Mice
- Microscopy, Fluorescence
- Middle Aged
- Muscle, Skeletal/metabolism
- Myocardium/metabolism
- Protein Structure, Tertiary
- RNA/metabolism
- RNA, Messenger/metabolism
- Rats
- Rats, Sprague-Dawley
- Recombinant Proteins/metabolism
- Retina/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Sarcolemma/metabolism
- Time Factors
- Tissue Distribution
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Affiliation(s)
- H Ma
- Department of Oral Molecular Biology, Oregon Health & Science University, Portland, Oregon 97201, USA
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15
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Horikawa Y, Oda N, Cox NJ, Li X, Orho-Melander M, Hara M, Hinokio Y, Lindner TH, Mashima H, Schwarz PE, del Bosque-Plata L, Horikawa Y, Oda Y, Yoshiuchi I, Colilla S, Polonsky KS, Wei S, Concannon P, Iwasaki N, Schulze J, Baier LJ, Bogardus C, Groop L, Boerwinkle E, Hanis CL, Bell GI. Genetic variation in the gene encoding calpain-10 is associated with type 2 diabetes mellitus. Nat Genet 2000; 26:163-75. [PMID: 11017071 DOI: 10.1038/79876] [Citation(s) in RCA: 921] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Type 2 or non-insulin-dependent diabetes mellitus (NIDDM) is the most common form of diabetes worldwide, affecting approximately 4% of the world's adult population. It is multifactorial in origin with both genetic and environmental factors contributing to its development. A genome-wide screen for type 2 diabetes genes carried out in Mexican Americans localized a susceptibility gene, designated NIDDM1, to chromosome 2. Here we describe the positional cloning of a gene located in the NIDDM1 region that shows association with type 2 diabetes in Mexican Americans and a Northern European population from the Botnia region of Finland. This putative diabetes-susceptibility gene encodes a ubiquitously expressed member of the calpain-like cysteine protease family, calpain-10 (CAPN10). This finding suggests a novel pathway that may contribute to the development of type 2 diabetes.
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Affiliation(s)
- Y Horikawa
- Howard Hughes Medical Institute, The University of Chicago, Chicago, Illinois, USA
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16
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Dear TN, Meier NT, Hunn M, Boehm T. Gene structure, chromosomal localization, and expression pattern of Capn12, a new member of the calpain large subunit gene family. Genomics 2000; 68:152-60. [PMID: 10964513 DOI: 10.1006/geno.2000.6289] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report the identification of mouse Capn12, a new member of the calpain large subunit gene family. It possesses potential protease and calcium-binding domains, features typical of the classical calpains. In situ hybridization and Northern blot analysis demonstrate that during the anagen phase of the hair cycle the cortex of the hair follicle is the major expression site of Capn12. The gene was sequenced in its entirety and consists of 21 exons spanning 13 kb with an exon-intron structure typical of the calpain gene family. The last exon of the mouse Actn4 gene overlaps the 3' end of Capn12 but in the opposite orientation. This overlap between the two genes is conserved in the human genome. Three versions of the Capn12 mRNA transcript were identified. They occur as a result of alternative splicing, and two of these encode a protein lacking the C-terminal calmodulin-like domain. Radiation hybrid mapping localized Capn12 to mouse chromosome 7, closely linked to a marker positioned at 10.4 cM. Refined mapping of Capn5, also previously localized to chromosome 7, indicated that it was not closely linked to Capn12, mapping tightly linked to a marker positioned at 48.5 cM.
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Affiliation(s)
- T N Dear
- Max-Planck Institute for Immunobiology, Stuebeweg 51, Freiburg, D-79108, Germany.
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