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Feng Z, Fan Y, Shi X, Luo X, Xie J, Liu S, Duan C, Wang Q, Ye Y, Yin W. Dysregulation of iron transport-related biomarkers in blood leukocytes is associated with poor prognosis of early trauma. Heliyon 2024; 10:e27000. [PMID: 38463887 PMCID: PMC10923684 DOI: 10.1016/j.heliyon.2024.e27000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/22/2023] [Accepted: 02/22/2024] [Indexed: 03/12/2024] Open
Abstract
Objective The early targeted and effective diagnosis and treatment of severe trauma are crucial for patients' outcomes. Blood leukocytes act as significant effectors during the initial inflammation and activation of innate immunity in trauma. This study aims to identify hub genes related to patients' prognosis in blood leukocytes at the early stages of trauma. Methods The expression profiles of Gene Expression Omnibus (GEO) Series (GSE) 36809 and GSE11375 were downloaded from the GEO database. R software, GraphPad Prism 9.3.1 software, STRING database, and Cytoscape software were used to process the data and identify hub genes in blood leukocytes of early trauma. Results Gene Ontology (GO) analysis showed that the differentially expressed genes (DEGs) of blood leukocytes at the early stages of trauma (0-4 h, 4-8 h, and 8-12 h) were mainly involved in neutrophil activation and neutrophil degranulation, neutrophil activation involved in immune response, neutrophil mediated immunity, lymphocyte differentiation, and cell killing. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that the DEGs were mainly involved in Osteoclast differentiation and Hematopoietic cell lineage. Sixty-six down-regulated DEGs and 148 up-regulated DEGs were identified and 37 hub genes were confirmed by Molecular Complex Detection (MCODE) of Cytoscape. Among the hub genes, Lipocalin 2 (LCN2), Lactotransferrin (LTF), Olfactomedin 4 (OLFM4), Resistin (RETN), and Transcobalamin 1 (TCN1) were related to prognosis and connected with iron transport closely. LCN2 and LTF were involved in iron transport and had a moderate predictive value for the poor prognosis of trauma patients, and the AUC of LCN2 and LTF was 0.7777 and 0.7843, respectively. Conclusion As iron transport-related hub genes in blood leukocytes, LCN2 and LTF can be used for prognostic prediction of early trauma.
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Affiliation(s)
- Zhusheng Feng
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
| | - Yingnan Fan
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
| | - Xiaofei Shi
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
| | - Xu Luo
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
| | - Jiangang Xie
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
| | - Shanshou Liu
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
| | - Chujun Duan
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
| | - Qianmei Wang
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
| | - Yuqin Ye
- Department of Neurosurgery, Xijing Hospital, The Air Force Medical University, Xi'an, China
- Department of Neurosurgery, PLA 921th Hospital (Second Affiliated Hospital of Hunan Normal University), Changsha, China
| | - Wen Yin
- Department of Emergency, Xijing Hospital, The Air Force Medical University, Xi'an, China
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Song G, Li W, Ma Y, Xian Y, Liao X, Yang X, Zhang H, Cade JE. Nutrient intake and risk of multimorbidity: a prospective cohort study of 25,389 women. BMC Public Health 2024; 24:696. [PMID: 38439008 PMCID: PMC10913224 DOI: 10.1186/s12889-024-18191-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 02/23/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND Multimorbidity is becoming an increasingly serious public health challenge in the aging population. The impact of nutrients on multimorbidity remains to be determined and was explored using data from a UK cohort study. METHOD Our research analysis is mainly based on the data collected by the United Kingdom Women's Cohort Study (UKWCS), which recruited 35,372 women aged 35-69 years at baseline (1995 to 1998), aiming to explore potential associations between diet and chronic diseases. Daily intakes of energy and nutrients were estimated using a validated 217-item food frequency questionnaire at recruitment. Multimorbidity was assessed using the Charlson comorbidity index (CCI) through electronic linkages to Hospital Episode Statistics up to March 2019. Cox's proportional hazards models were used to estimate associations between daily intakes of nutrients and risk of multimorbidity. Those associations were also analyzed in multinomial logistic regression as a sensitivity analysis. In addition, a stratified analysis was conducted with age 60 as the cutoff point. RESULTS Among the 25,389 participants, 7,799 subjects (30.7%) were confirmed with multimorbidity over a median follow-up of 22 years. Compared with the lowest quintile, the highest quintile of daily intakes of energy and protein were associated with 8% and 12% increased risk of multimorbidity respectively (HR 1.08 (95% CI 1.01, 1.16), p-linearity = 0.022 for energy; 1.12 (1.04, 1.21), p-linearity = 0.003 for protein). Higher quintiles of daily intakes of vitamin C and iron had a slightly lowered risk of multimorbidity, compared to the lowest quintile. A significantly higher risk of multimorbidity was found to be linearly associated with higher intake quintiles of vitamin B12 and vitamin D (p-linearity = 0.001 and 0.002, respectively) in Cox models, which became insignificant in multinomial logistic regression. There was some evidence of effect modification by age in intakes of iron and vitamin B1 associated with the risk of multimorbidity (p-interaction = 0.006 and 0.025, respectively). CONCLUSIONS Our findings highlight a link between nutrient intake and multimorbidity risk. However, there is uncertainty in our results, and more research is needed before definite conclusions can be reached.
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Affiliation(s)
- Ge Song
- Department of Clinical Nutrition, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, 710061, Xi'an, China
| | - Weimin Li
- Department of Clinical Nutrition, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, 710061, Xi'an, China
| | - Yanfen Ma
- Department of Clinical Laboratory, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, 710061, Xi'an, China
| | - Yao Xian
- Department of Clinical Nutrition, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, 710061, Xi'an, China
| | - Xia Liao
- Department of Clinical Nutrition, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, 710061, Xi'an, China
| | - Xueliang Yang
- Department of Clinical Nutrition, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, 710061, Xi'an, China
| | - Huifeng Zhang
- Department of Clinical Nutrition, The First Affiliated Hospital of Xi'an Jiaotong University, No. 277 Yanta West Road, 710061, Xi'an, China.
- School of Food Science and Nutrition, University of Leeds, LS2 9AT, Leeds, UK.
| | - Janet E Cade
- School of Food Science and Nutrition, University of Leeds, LS2 9AT, Leeds, UK
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Fedosov SN, Nexo E, Heegaard CW. Kinetics of Cellular Cobalamin Uptake and Conversion: Comparison of Aquo/Hydroxocobalamin to Cyanocobalamin. Nutrients 2024; 16:378. [PMID: 38337663 PMCID: PMC10857013 DOI: 10.3390/nu16030378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/21/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
Cyanocobalamin (CNCbl) and aquo/hydroxocobalamin (HOCbl) are the forms of vitamin B12 that are most commonly used for supplementation. They are both converted to methylcobalamin (MeCbl) and 5'-deoxyadenosylcobalamin (AdoCbl), which metabolize homocysteine and methylmalonic acid, respectively. Here, we compare the kinetics of uptake and the intracellular transformations of radiolabeled CNCbl vs. HOCbl in HeLa cells. More HOCbl was accumulated over 4-48 h, but further extrapolation indicated similar uptake (>90%) for both vitamin forms. The initially synthesized coenzyme was MeCbl, which noticeably exceeded AdoCbl during 48 h. Yet, the synthesis of AdoCbl accelerated, and the predicted final levels of Cbls were MeCbl ≈ AdoCbl ≈ 40% and HOCbl ≈ 20%. The designed kinetic model revealed the same patterns of the uptake and turnover for CNCbl and HOCbl, apart from two steps. First, the "activating" intracellular processing of the internalized HOCbl was six-fold faster. Second, the detachment rates from the cell surface (when the "excessive" Cbl-molecules were refluxed into the external medium) related as 4:1 for CNCbl vs. HOCbl. This gave a two-fold faster cellular accumulation and processing of HOCbl vs. CNCbl. In medical terms, our data suggest (i) an earlier response to the treatment of Cbl-deficiency with HOCbl, and (ii) the manifestation of a successful treatment initially as a decrease in homocysteine.
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Affiliation(s)
- Sergey N. Fedosov
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark;
- Department of Clinical Medicine/Clinical Biochemistry, Aarhus University Hospital, 8200 Aarhus N, Denmark;
| | - Ebba Nexo
- Department of Clinical Medicine/Clinical Biochemistry, Aarhus University Hospital, 8200 Aarhus N, Denmark;
| | - Christian W. Heegaard
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus C, Denmark;
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Finkelstein JL, Fothergill A, Venkatramanan S, Layden AJ, Williams JL, Crider KS, Qi YP. Vitamin B12 supplementation during pregnancy for maternal and child health outcomes. Cochrane Database Syst Rev 2024; 1:CD013823. [PMID: 38189492 PMCID: PMC10772977 DOI: 10.1002/14651858.cd013823.pub2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
BACKGROUND Vitamin B12 deficiency is a major public health problem worldwide, with the highest burden in elderly people, pregnant women, and young children. Due to its role in DNA synthesis and methylation, folate metabolism, and erythropoiesis, vitamin B12 supplementation during pregnancy may confer longer-term benefits to maternal and child health outcomes. OBJECTIVES To evaluate the benefits and harms of oral vitamin B12 supplementation during pregnancy on maternal and child health outcomes. SEARCH METHODS We searched the Cochrane Pregnancy and Childbirth's Trials Register, ClinicalTrials.gov, the World Health Organization International Clinical Trials Registry Platform (ICTRP) on 2 June 2023, and reference lists of retrieved studies. SELECTION CRITERIA Randomised controlled trials (RCTs), quasi-RCTs, or cluster-RCTs evaluating the effects of oral vitamin B12 supplementation compared to placebo or no vitamin B12 supplementation during pregnancy. DATA COLLECTION AND ANALYSIS We used standard Cochrane methods. Four review authors independently assessed trial eligibility. Two review authors independently extracted data from included studies and conducted checks for accuracy. Three review authors independently assessed the risk of bias of the included studies using the Cochrane RoB 1 tool. We used GRADE to evaluate the certainty of evidence for primary outcomes. MAIN RESULTS The review included five trials with 984 pregnant women. All trials were conducted in low- and middle-income countries, including India, Bangladesh, South Africa, and Croatia. At enrolment, 26% to 51% of pregnant women had vitamin B12 deficiency (less than 150 pmol/L), and the prevalence of anaemia (haemoglobin less than 11.0 g/dL) ranged from 30% to 46%. The dosage of vitamin B12 supplementation varied from 5 μg/day to 250 μg/day, with administration beginning at 8 to 28 weeks' gestation through to delivery or three months' postpartum, and the duration of supplementation ranged from 8 to 16 weeks to 32 to 38 weeks. Three trials, involving 609 pregnant women, contributed data for meta-analyses of the effects of vitamin B12 supplementation compared to placebo or no vitamin B12 supplementation. Maternal anaemia: there may be little to no difference for maternal anaemia by intervention group, but the evidence is very uncertain (70.9% versus 65.0%; risk ratio (RR) 1.08, 95% confidence interval (CI) 0.93 to 1.26; 2 trials, 284 women; very low-certainty evidence). Maternal vitamin B12 status: vitamin B12 supplementation during pregnancy may reduce the risk of maternal vitamin B12 deficiency compared to placebo or no vitamin B12 supplementation, but the evidence is very uncertain (25.9% versus 67.9%; RR 0.38, 95% CI 0.28 to 0.51; 2 trials, 272 women; very low-certainty evidence). Women who received vitamin B12 supplements during pregnancy may have higher total vitamin B12 concentrations compared to placebo or no vitamin B12 supplementation (mean difference (MD) 60.89 pmol/L, 95% CI 40.86 to 80.92; 3 trials, 412 women). However, there was substantial heterogeneity (I2 = 85%). Adverse pregnancy outcomes: the evidence is uncertain about the effect on adverse pregnancy outcomes, including preterm birth (RR 0.97, 95% CI 0.55 to 1.74; 2 trials, 340 women; low-certainty evidence), and low birthweight (RR 1.50, 95% CI 0.93 to 2.43; 2 trials, 344 women; low-certainty evidence). Two trials reported data on spontaneous abortion (or miscarriage); however, the trials did not report quantitative data for meta-analysis and there was no clear definition of spontaneous abortion in the study reports. No trials evaluated the effects of vitamin B12 supplementation during pregnancy on neural tube defects. Infant vitamin B12 status: children born to women who received vitamin B12 supplementation had higher total vitamin B12 concentrations compared to placebo or no vitamin B12 supplementation (MD 71.89 pmol/L, 95% CI 20.23 to 123.54; 2 trials, 144 children). Child cognitive outcomes: three ancillary analyses of one trial reported child cognitive outcomes; however, data were not reported in a format that could be included in quantitative meta-analyses. In one study, maternal vitamin B12 supplementation did not improve neurodevelopment status (e.g. cognitive, language (receptive and expressive), motor (fine and gross), social-emotional, or adaptive (conceptual, social, practical) domains) in children compared to placebo (9 months, Bayley Scales of Infant and Toddler Development Third Edition (BSID-III); 1 trial; low-certainty evidence) or neurophysiological outcomes (72 months, event-related potential measures; 1 trial; low-certainty evidence), though children born to women who received vitamin B12 supplementation had improved expressive language domain compared to placebo (30 months, BSID-III; 1 trial; low-certainty evidence). AUTHORS' CONCLUSIONS Oral vitamin B12 supplementation during pregnancy may reduce the risk of maternal vitamin B12 deficiency and may improve maternal vitamin B12 concentrations during pregnancy or postpartum compared to placebo or no vitamin B12 supplementation, but the evidence is very uncertain. The effects of vitamin B12 supplementation on other primary outcomes assessed in this review were not reported, or were not reported in a format for inclusion in quantitative analyses. Vitamin B12 supplementation during pregnancy may improve maternal and infant vitamin B12 status, but the potential impact on longer-term clinical and functional maternal and child health outcomes has not yet been established.
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Affiliation(s)
| | - Amy Fothergill
- Division of Nutritional Sciences, Cornell University, Ithaca, New York, USA
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | | | - Alexander J Layden
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Jennifer L Williams
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Krista S Crider
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Yan Ping Qi
- National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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Jonnalagadda D, Kihara Y, Groves A, Ray M, Saha A, Ellington C, Lee-Okada HC, Furihata T, Yokomizo T, Quadros EV, Rivera R, Chun J. FTY720 requires vitamin B 12-TCN2-CD320 signaling in astrocytes to reduce disease in an animal model of multiple sclerosis. Cell Rep 2023; 42:113545. [PMID: 38064339 PMCID: PMC11066976 DOI: 10.1016/j.celrep.2023.113545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/24/2023] [Accepted: 11/20/2023] [Indexed: 12/30/2023] Open
Abstract
Vitamin B12 (B12) deficiency causes neurological manifestations resembling multiple sclerosis (MS); however, a molecular explanation for the similarity is unknown. FTY720 (fingolimod) is a sphingosine 1-phosphate (S1P) receptor modulator and sphingosine analog approved for MS therapy that can functionally antagonize S1P1. Here, we report that FTY720 suppresses neuroinflammation by functionally and physically regulating the B12 pathways. Genetic and pharmacological S1P1 inhibition upregulates a transcobalamin 2 (TCN2)-B12 receptor, CD320, in immediate-early astrocytes (ieAstrocytes; a c-Fos-activated astrocyte subset that tracks with experimental autoimmune encephalomyelitis [EAE] severity). CD320 is also reduced in MS plaques. Deficiency of CD320 or dietary B12 restriction worsens EAE and eliminates FTY720's efficacy while concomitantly downregulating type I interferon signaling. TCN2 functions as a chaperone for FTY720 and sphingosine, whose complex induces astrocytic CD320 internalization, suggesting a delivery mechanism of FTY720/sphingosine via the TCN2-CD320 pathway. Taken together, the B12-TCN2-CD320 pathway is essential for the mechanism of action of FTY720.
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Affiliation(s)
- Deepa Jonnalagadda
- Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Yasuyuki Kihara
- Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA.
| | - Aran Groves
- Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA; Neuroscience Graduate Program, School of Medicine, University of California San Diego, 9500 Gilman Dr, La Jolla, CA 92093, USA
| | - Manisha Ray
- Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Arjun Saha
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Clayton Ellington
- Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Hyeon-Cheol Lee-Okada
- Department of Biochemistry, Graduate School of Medicine, Juntendo University, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Tomomi Furihata
- Laboratory of Clinical Pharmacy and Experimental Therapeutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo 192-0392, Japan
| | - Takehiko Yokomizo
- Department of Biochemistry, Graduate School of Medicine, Juntendo University, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Edward V Quadros
- Department of Medicine, SUNY-Downstate Medical Center, 450 Clarkson Avenue, Brooklyn, NY 11203, USA
| | - Richard Rivera
- Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Jerold Chun
- Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA.
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Joshi N, Sahay A, Mane A, Sundrani D, Randhir K, Wagh G, Thornburg K, Powell T, Yajnik C, Joshi S. Altered expression of nutrient transporters in syncytiotrophoblast membranes in preeclampsia placentae. Placenta 2023; 139:181-189. [PMID: 37421872 DOI: 10.1016/j.placenta.2023.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/29/2023] [Accepted: 07/03/2023] [Indexed: 07/10/2023]
Abstract
INTRODUCTION Expression of nutrient transporters in the placenta affects fetal growth. This study reports the protein expression of nutrient transporters in the syncytial membranes [microvillous membrane (MVM) and basal membrane (BM)] of normotensive control and preeclampsia placentae. METHODS Placentae were collected from fourteen normotensive control women and fourteen women with preeclampsia. The syncytiotrophoblast MVM and BM membranes were isolated. The protein expression of glucose transporter (GLUT1), vitamin B12 transporter (CD320) and fatty acid transporters (FATP2, FATP4) was assessed in both the membranes. RESULTS Comparison between membranes demonstrates similar CD320 protein expression in normotensive group whereas, in preeclampsia placentae it was higher in the BM as compared to MVM (p < 0.05). FATP2&4 protein expression was higher in the BM as compared to their respective MVM fraction in both the groups (p < 0.01 for both). Comparison between groups demonstrates higher GLUT1 expression in the MVM (p < 0.05) and BM (p < 0.05) whereas lower CD320 expression in the MVM (p < 0.05) of preeclampsia placentae as compared to their respective membranes in normotensive control. Furthermore, GLUT1 protein expression was positively associated and CD320 protein expression was negatively associated with maternal body mass index (BMI) (p < 0.05 for both). No difference was observed in the FATP2&4 protein expression. However, FATP4 protein expression was negatively associated with maternal blood pressure (p < 0.05 for MVM; p = 0.060 for BM) and birth weight (p < 0.05 for both membranes). DISCUSSION The current study for the first time demonstrates differential expression of various transporters in the syncytiotrophoblast membranes of the preeclampsia placentae which may influence fetal growth.
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Affiliation(s)
- Nikita Joshi
- Mother and Child Health, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
| | - Akriti Sahay
- Mother and Child Health, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
| | - Aditi Mane
- Mother and Child Health, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
| | - Deepali Sundrani
- Mother and Child Health, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
| | - Karuna Randhir
- Mother and Child Health, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India
| | - Girija Wagh
- Department of Obstetrics and Gynecology, Bharati Medical College and Hospital, Bharati Vidyapeeth University, Pune, India
| | - Kent Thornburg
- Department of Medicine, Center for Developmental Health, Knight Cardiovascular Institute, Bob and Charlee Moore Institute for Nutrition and Wellness, Oregon Health and Science University, Portland, OR, United States
| | - Theresa Powell
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States; Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | | | - Sadhana Joshi
- Mother and Child Health, Interactive Research School for Health Affairs, Bharati Vidyapeeth University, Pune, India.
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Siani G, Mercaldo B, Alterisio MC, Di Loria A. Vitamin B12 in Cats: Nutrition, Metabolism, and Disease. Animals (Basel) 2023; 13:ani13091474. [PMID: 37174511 PMCID: PMC10177498 DOI: 10.3390/ani13091474] [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: 03/03/2023] [Revised: 04/18/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
Cobalamin is a water-soluble molecule that has an important role in cellular metabolism, especially in DNA synthesis, methylation, and mitochondrial metabolism. Cobalamin is bound by intrinsic factor (IF) and absorbed in the ileal tract. The IF in cats is synthesized exclusively by pancreatic tissue. About 75% of the total plasma cobalamin in cats is associated with transcobalamin II, while in this species, transcobalamin I is not present. In cats, the half-life of cobalamin is 11-14 days. Diagnostic biomarkers for B12 status in cats include decreased levels of circulating total cobalamin and increased levels of methylmalonic acid. The reference interval for serum cobalamin concentrations in cats is 290-1500 ng/L, and for the serum methylmalonic acid concentration, it is 139-897 nmol/L. Therapy for hypocobalaminemia mainly depends on the underlying disease. In some cases, subcutaneous or intramuscular injection of 250 μg/cat is empirically administered. In recent years, it has been demonstrated that oral cobalamin supplementation can also be used successfully in dogs and cats as a less invasive alternative to parental administration. This review describes the current knowledge regarding B12 requirements and highlights improvements in diagnostic methods as well as the role of hypocobalaminemia in its associated diseases.
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Affiliation(s)
| | - Beatrice Mercaldo
- Department of Veterinary Medicine and Animal Productions, University Federico II of Napoli, Via F. Delpino 1, 80137 Napoli, Italy
| | - Maria Chiara Alterisio
- Department of Veterinary Medicine and Animal Productions, University Federico II of Napoli, Via F. Delpino 1, 80137 Napoli, Italy
| | - Antonio Di Loria
- Department of Veterinary Medicine and Animal Productions, University Federico II of Napoli, Via F. Delpino 1, 80137 Napoli, Italy
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Mantareva V, Iliev I, Sulikovska I, Durmuş M, Angelov I. Cobalamin (Vitamin B12) in Anticancer Photodynamic Therapy with Zn(II) Phthalocyanines. Int J Mol Sci 2023; 24:ijms24054400. [PMID: 36901830 PMCID: PMC10002512 DOI: 10.3390/ijms24054400] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/17/2023] [Accepted: 02/21/2023] [Indexed: 02/25/2023] Open
Abstract
Photodynamic therapy (PDT) is a curative method, firstly developed for cancer therapy with fast response after treatment and minimum side effects. Two zinc(II) phthalocyanines (3ZnPc and 4ZnPc) and a hydroxycobalamin (Cbl) were investigated on two breast cancer cell lines (MDA-MB-231 and MCF-7) in comparison to normal cell lines (MCF-10 and BALB 3T3). The novelty of this study is a complex of non-peripherally methylpyridiloxy substituted Zn(II) phthalocyanine (3ZnPc) and the evaluation of the effects on different cell lines due to the addition of second porphyrinoid such as Cbl. The results showed the complete photocytotoxicity of both ZnPc-complexes at lower concentrations (<0.1 μM) for 3ZnPc. The addition of Cbl caused a higher phototoxicity of 3ZnPc at one order lower concentrations (<0.01 μM) with a diminishment of the dark toxicity. Moreover, it was determined that an increase of the selectivity index of 3ZnPc, from 0.66 (MCF-7) and 0.89 (MDA-MB-231) to 1.56 and 2.31, occurred by the addition of Cbl upon exposure with a LED 660 nm (50 J/cm2). The study suggested that the addition of Cbl can minimize the dark toxicity and improve the efficiency of the phthalocyanines for anticancer PDT applications.
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Affiliation(s)
- Vanya Mantareva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Bld. 9, 1113 Sofia, Bulgaria
- Correspondence: or ; Tel.: +359-9606-181
| | - Ivan Iliev
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Bld. 25, 1113 Sofia, Bulgaria
| | - Inna Sulikovska
- Institute of Experimental Morphology, Pathology and Anthropology with Museum, Bulgarian Academy of Sciences, Bld. 25, 1113 Sofia, Bulgaria
| | - Mahmut Durmuş
- Department of Chemistry, Gebze Technical University, Gebze 41400, Turkey
| | - Ivan Angelov
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Bld. 9, 1113 Sofia, Bulgaria
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9
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Linagliptin treatment is associated with altered cobalamin (VitB12) homeostasis in mice and humans. Sci Rep 2023; 13:601. [PMID: 36635409 PMCID: PMC9837112 DOI: 10.1038/s41598-023-27648-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 01/05/2023] [Indexed: 01/14/2023] Open
Abstract
Linagliptin is a dipeptidyl peptidase-4 (DPP-4) inhibitor used for the treatment of type 2 diabetes, with additional beneficial effects for the kidney. Treatment of mice with linagliptin revealed increased storage of cobalamin (Cbl, Vitamin B12) in organs if a standard Cbl diet (30 µg Cbl/kg chow) is given. In order to translate these findings to humans, we determined methylmalonic acid (MMA), a surrogate marker of functional Cbl homeostasis, in human plasma and urine samples (n = 1092) from baseline and end of trial (6 months after baseline) of the previously completed MARLINA-T2D clinical trial. We found that individuals with medium Cbl levels (MMA between 50 and 270 nmol/L for plasma, 0.4 and 3.5 µmol/mmol creatinine for urine, at baseline and end of trial) exhibited higher MMA values at the end of study in placebo compared with linagliptin. Linagliptin might inhibit the N-terminal degradation of the transcobalamin receptor CD320, which is necessary for uptake of Cbl into endothelial cells. Because we demonstrate that linagliptin led to increased organ levels of Cbl in mice, sustained constant medium MMA levels in humans, and inhibited CD320 processing by DPP-4 in-vitro, we speculate that linagliptin promotes intra-cellular uptake of Cbl by prolonging half-life of CD320.
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Temova Rakuša Ž, Roškar R, Hickey N, Geremia S. Vitamin B 12 in Foods, Food Supplements, and Medicines-A Review of Its Role and Properties with a Focus on Its Stability. MOLECULES (BASEL, SWITZERLAND) 2022; 28:molecules28010240. [PMID: 36615431 PMCID: PMC9822362 DOI: 10.3390/molecules28010240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022]
Abstract
Vitamin B12, also known as the anti-pernicious anemia factor, is an essential micronutrient totally dependent on dietary sources that is commonly integrated with food supplements. Four vitamin B12 forms-cyanocobalamin, hydroxocobalamin, 5'-deoxyadenosylcobalamin, and methylcobalamin-are currently used for supplementation and, here, we provide an overview of their biochemical role, bioavailability, and efficacy in different dosage forms. Since the effective quantity of vitamin B12 depends on the stability of the different forms, we further provide a review of their main reactivity and stability under exposure to various environmental factors (e.g., temperature, pH, light) and the presence of some typical interacting compounds (oxidants, reductants, and other water-soluble vitamins). Further, we explore how the manufacturing process and storage affect B12 stability in foods, food supplements, and medicines and provide a summary of the data published to date on the content-related quality of vitamin B12 products on the market. We also provide an overview of the approaches toward their stabilization, including minimization of the destabilizing factors, addition of proper stabilizers, or application of some (innovative) technological processes that could be implemented and contribute to the production of high-quality vitamin B12 products.
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Affiliation(s)
| | - Robert Roškar
- Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Neal Hickey
- Department of Chemical and Pharmaceutical Sciences, Centre of Excellence in Biocrystallography, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Silvano Geremia
- Department of Chemical and Pharmaceutical Sciences, Centre of Excellence in Biocrystallography, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
- Correspondence:
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11
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Li P, Zhao Y, Liu Y, Zhao Y, Yan Y, Li S, Li S, Tong H. Cyanocobalamin promotes muscle development through the TGF-β signaling pathway. Food Funct 2022; 13:12721-12732. [PMID: 36408829 DOI: 10.1039/d2fo00315e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Cyanocobalamin (CNCbl, the compound name of Vitamin B12) is the only mineral vitamin that is essential for growth and development and cannot be produced by animals. Some studies have found that CNCbl can promote the proliferation and migration of C2C12 cells, but the mechanism by which it affects muscle development is still unknown. In this study, we elucidated the effect of CNCbl on muscle development and studied its underlying mechanism. CNCbl could promote the differentiation of C2C12 cells and upregulate Acvr1, p-Smad2 and p-Smad3 in the TGF-β signaling pathway in vitro. CD320 (the receptor in cell surface for binding with CNCbl transporter transcobalamin II) inhibition could reduce the uptake of CNCbl and significantly downregulate the expression of differentiation marker proteins MyoG and MYH2. Furthermore, the levels of p-Smad2 and p-Smad3 were also reduced with the inhibition of CD320, even though CNCbl was added to the C2C12 culture medium. In addition, the injection of CNCbl could accelerate the process of mouse muscle injury repair, enlarge the diameter of newly formed myofibers and upregulate the expression of MYH2, PAX7, CD320, Acvr1, p-Smad2 and p-Smad3 in vivo. These results suggest that CNCbl can promote muscle development and may play its role by regulating the expression of Acvr1, p-Smad2 and p-Smad3 related to the TGF-β signaling pathway.
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Affiliation(s)
- Ping Li
- Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin 150030, China.
| | - Yahao Zhao
- Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin 150030, China.
| | - Yongze Liu
- Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin 150030, China.
| | - Yuelei Zhao
- Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin 150030, China.
| | - Yunqin Yan
- Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin 150030, China.
| | - Shuang Li
- Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin 150030, China.
| | - Shufeng Li
- Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin 150030, China.
| | - Huili Tong
- Laboratory of Cell and Developmental Biology, Northeast Agricultural University, Harbin 150030, China.
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12
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Güitrón Leal CE, Palma Molina XE, Williams JL, Venkatramanan S, Finkelstein JL, Kuriyan R, Crider KS. Vitamin B 12
supplementation for growth, development, and cognition in children. Hippokratia 2022. [DOI: 10.1002/14651858.cd015264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | | | - Jennifer L Williams
- National Center on Birth Defects and Developmental Disabilities; Centers for Disease Control and Prevention; Atlanta GA USA
| | | | | | - Rebecca Kuriyan
- Division of Nutrition; St John's Research Institute; Bengaluru India
| | - Krista S Crider
- National Center on Birth Defects and Developmental Disabilities; Centers for Disease Control and Prevention; Atlanta GA USA
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13
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Baumschlager A. Engineering Light-Control in Biology. Front Bioeng Biotechnol 2022; 10:901300. [PMID: 35573251 PMCID: PMC9096073 DOI: 10.3389/fbioe.2022.901300] [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: 03/21/2022] [Accepted: 04/14/2022] [Indexed: 11/13/2022] Open
Abstract
Unraveling the transformative power of optogenetics in biology requires sophisticated engineering for the creation and optimization of light-regulatable proteins. In addition, diverse strategies have been used for the tuning of these light-sensitive regulators. This review highlights different protein engineering and synthetic biology approaches, which might aid in the development and optimization of novel optogenetic proteins (Opto-proteins). Focusing on non-neuronal optogenetics, chromophore availability, general strategies for creating light-controllable functions, modification of the photosensitive domains and their fusion to effector domains, as well as tuning concepts for Opto-proteins are discussed. Thus, this review shall not serve as an encyclopedic summary of light-sensitive regulators but aims at discussing important aspects for the engineering of light-controllable proteins through selected examples.
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Affiliation(s)
- Armin Baumschlager
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zürich, Basel, Switzerland
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14
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MTHFD1 c.1958G>A and TCN2 c.776G>C polymorphisms of folate metabolism genes and their implication for oral cavity cancer. POSTEP HIG MED DOSW 2022. [DOI: 10.2478/ahem-2021-0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Background
Cancers of the head and neck can damage the brain, spinal cord, and nerves, as well as the sense organs responsible for contact with the outside world. Oncogenic transformation occurs following mutations that change the function of specific genes, such tumor suppressor genes or oncogenes, and their encoded protein products. Therefore, the aim of this study was to evaluate the relationship between the occurrence of MTHFD1 c.1958G>A and TCN2 c.776G>C gene polymorphisms and the risk of oral cavity cancer.
Materials and methods
The study population consisted of 439 patients and 200 healthy subjects. Genomic DNA was extracted from peripheral blood and from paraffin-embedded tissue. Analysis of the gene polymorphisms was performed using polymerase chain reaction–restriction fragment length polymorphism.
Results
Statistically significant differences were found in the distribution of genotypes of the rs2236225 and rs1801198 polymorphisms between patients and controls. Regarding MTHFD1 c.1958G>A, the GA genotype (p<0.0001, OR = 2.91, 95% CI = 1.88–4.49-GA) was more common among patients than healthy subjects. Regarding TCN2 c.776G>C, the frequency of CC genotype (p< 0.0001, OR = 0.17, 95% CI = 0.10–0.33-CC) was significantly less common among patients than healthy subjects. Tobacco smoking, alcohol use, and male gender (p<0.0001) were found to be predictors of the disease.
Conclusion
The results suggest that the MTHFD1 c.1958G>A polymorphism may be associated with a greater risk of oral cavity cancer, whereas a protective effect has been found for the TCN2 c.776G>C polymorphism.
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Hannibal L, Jacobsen DW. Intracellular processing of vitamin B 12 by MMACHC (CblC). VITAMINS AND HORMONES 2022; 119:275-298. [PMID: 35337623 DOI: 10.1016/bs.vh.2022.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Vitamin B12 (cobalamin, Cbl, B12) is a water-soluble micronutrient synthesized exclusively by a group of microorganisms. Human beings are unable to make B12 and thus obtain the vitamin via intake of animal products, fermented plant-based foods or supplements. Vitamin B12 obtained from the diet comprises three major chemical forms, namely hydroxocobalamin (HOCbl), methylcobalamin (MeCbl) and adenosylcobalamin (AdoCbl). The most common form of B12 present in supplements is cyanocobalamin (CNCbl). Yet, these chemical forms cannot be utilized directly as they come, but instead, they undergo chemical processing by the MMACHC protein, also known as CblC. Processing of dietary B12 by CblC involves removal of the upper-axial ligand (beta-ligand) yielding the one-electron reduced intermediate cob(II)alamin. Newly formed cob(II)alamin undergoes trafficking and delivery to the two B12-dependent enzymes, cytosolic methionine synthase (MS) and mitochondrial methylmalonyl-CoA mutase (MUT). The catalytic cycles of MS and MUT incorporate cob(II)alamin as a precursor to regenerate the coenzyme forms MeCbl and AdoCbl, respectively. Mutations and epimutations in the MMACHC gene result in cblC disease, the most common inborn error of B12 metabolism, which manifests with combined homocystinuria and methylmalonic aciduria. Elevation of metabolites homocysteine and methylmalonic acid occurs because the lack of an active CblC blocks formation of the indispensable precursor cob(II)alamin that is necessary to activate MS and MUT. Thus, in patients with cblC disease, vitamin B12 is absorbed and present in circulation in normal to high concentrations, yet, cells are unable to make use of it. Mutations in seemingly unrelated genes that modify MMACHC gene expression also result in clinical phenotypes that resemble cblC disease. We review current knowledge on structural and functional aspects of intracellular processing of vitamin B12 by the versatile protein CblC, its partners and possible regulators.
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Affiliation(s)
- Luciana Hannibal
- Laboratory of Clinical Biochemistry and Metabolism, Department of General Pediatrics, Adolescent Medicine and Neonatology, Faculty of Medicine, Medical Center-University of Freiburg, Freiburg, Germany.
| | - Donald W Jacobsen
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
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Chen Y, Gu X, Zhang Y, Zhang X, Zhang C, Liu M, Sun S, Dong N, Wu Q. CD320 expression and apical membrane targeting in renal and intestinal epithelial cells. Int J Biol Macromol 2022; 201:85-92. [PMID: 34998874 DOI: 10.1016/j.ijbiomac.2021.12.158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/21/2021] [Accepted: 12/24/2021] [Indexed: 02/06/2023]
Abstract
Vitamin B12 is an essential nutrient acquired via dietary intake. Receptor-mediated endocytosis is a key mechanism in vitamin B12 absorption, cellular uptake, and reabsorption. CD320 is a type I transmembrane protein responsible for cellular uptake of vitamin B12 in peripheral tissues. In this study, we examined segmental distribution and cellular expression of CD320 in mouse kidneys and intestines. We show that CD320 is expressed on the luminal surface in the small intestine and in proximal tubules in the kidney, suggesting that, in addition to its role in vitamin B12 uptake in peripheral tissues, CD320 may participate in vitamin B12 absorption in the small intestine and reabsorption in the kidney. Moreover, we show that an amino acid motif, DSSDE, in the second low-density lipoprotein receptor class A domain of CD320 is a key apical membrane targeting signal in both renal and intestinal epithelial cells. Mutations or deletion of this motif abolish the specific apical membrane expression of CD320 in polarized Madin-Darby canine kidney cells and human colon cancer-derived Caco-2 cells. In short-hairpin RNA-based gene knockdown experiments, we show that the apical membrane targeting of CD320 is mediated by a Rab11a-dependent mechanism. These results extend our knowledge regarding the cell biology of CD320 and its role in vitamin B12 metabolism.
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Affiliation(s)
- Yue Chen
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China
| | - Xiabing Gu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China; MOH Key Laboratory of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Yikai Zhang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China; MOH Key Laboratory of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Xianrui Zhang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China; MOH Key Laboratory of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Ce Zhang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China
| | - Meng Liu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China
| | - Shijin Sun
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China; MOH Key Laboratory of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Ningzheng Dong
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China; MOH Key Laboratory of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Qingyu Wu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Medical School, Soochow University, Suzhou 215123, China.
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17
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Waheed N, Fayyaz Z, Imran A. Spectrum of clinical manifestation of methylmalonic acidemia and homocystinuria in a family of six siblings: novel combination of transcobalamin receptor defect (CD320) and cblC deficiency (MMACHC). EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2021. [DOI: 10.1186/s43042-021-00197-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Methylmalonic acidemia with homocystinuria is caused by a rare inborn error of vitamin B12 (cobalamin) metabolism. There are four complementation classes of cobalamin defects cblC, cblD, cblF, and cblJ that are responsible for combined methylmalonic acidemia and homocystinuria.
Case presentation
We report a case of a Pakistani family composed of six children diagnosed with methylmalonic acidemia and homocystinuria (MMA + HCU). Mutation analysis of siblings revealed a variable combination of c.394C>T mutation in the MMACHC gene and c.262_264del in CD320 gene. All siblings had variable age of onset, initial symptomatology, the severity of disease, and response to treatment. The maximum age of presentation was 6.5 years and the minimum age was at birth. The spectrum of symptoms ranged from a subtle learning disability to global developmental delay within the same family. None of them had a seizure disorder, megaloblastic anemia, visual disturbance, and vascular events.CD320 defect itself is very rare, and only 12 cases have been reported so far. We report six cases, four of them had homozygous MMACHC variant c.394C>T and the other two had heterozygous MMACHC mutations in c.394C>T and c.262_264del in CD 320 genes. To date, neither such case has been reported in the literature or this compound heterozygous mutation.
Conclusion
Our case report emphasizes that the diagnosis of inherited metabolic disorder in a child obviates the need to screen all siblings for the same disorder.
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Gandioso A, Purkait K, Gasser G. Recent Approaches towards the Development of Ru(II) Polypyridyl Complexes for Anticancer Photodynamic Therapy. Chimia (Aarau) 2021; 75:845-855. [PMID: 34728011 DOI: 10.2533/chimia.2021.845] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Photodynamic therapy (PDT) is a remarkable alternative or complementary technique to chemotherapy, radiotherapy or immunotherapy to treat certain forms of cancer. The synergistic effect of light, photosensitizer (PS) and oxygen allows for the treatment of tumours with an extremely high spatio-tumoral control, therefore minimizing the severe side effects usually observed in chemotherapy. The currently employed PDT PSs based on porphyrins have, in some cases, some limitations, which include a low absorbance in the therapeutic window, a low body clearance, photobleaching, among others. In this context, Ru(ii) polypyridyl complexes are interesting alternatives. They have low lying excited energy states and the presence of a heavy metal increases the possibility of spin-orbit coupling. Moreover, their photophysical properties are relatively easy to tune and they have very low photobleaching rates. All of these make them attractive candidates for further development as therapeutically suitable PDT PSs. In this review, after having presented this field of research, we discuss the developments made by our group in this field of research since 2017. We notably describe how we tuned the photophysical properties of our complexes from the visible region to the therapeutically suitable red region. This was accompanied by the preparation of PSs with enhanced phototoxicity and high phototoxicity index. We also discuss the use of two-photon excitation to eradicate tumours in nude mice. Furthermore, we describe our approach for the selective delivery of our complexes using targeting agents. Lastly, we report on our very recent synergistic approach to treat cancer using bimetallic Ru(ii)-Pt(iv) prodrug candidates.
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Affiliation(s)
- Albert Gandioso
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France
| | - Kallol Purkait
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France;,
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19
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Guéant JL, Guéant-Rodriguez RM, Kosgei VJ, Coelho D. Causes and consequences of impaired methionine synthase activity in acquired and inherited disorders of vitamin B 12 metabolism. Crit Rev Biochem Mol Biol 2021; 57:133-155. [PMID: 34608838 DOI: 10.1080/10409238.2021.1979459] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Methyl-Cobalamin (Cbl) derives from dietary vitamin B12 and acts as a cofactor of methionine synthase (MS) in mammals. MS encoded by MTR catalyzes the remethylation of homocysteine to generate methionine and tetrahydrofolate, which fuel methionine and cytoplasmic folate cycles, respectively. Methionine is the precursor of S-adenosyl methionine (SAM), the universal methyl donor of transmethylation reactions. Impaired MS activity results from inadequate dietary intake or malabsorption of B12 and inborn errors of Cbl metabolism (IECM). The mechanisms at the origin of the high variability of clinical presentation of impaired MS activity are classically considered as the consequence of the disruption of the folate cycle and related synthesis of purines and pyrimidines and the decreased synthesis of endogenous methionine and SAM. For one decade, data on cellular and animal models of B12 deficiency and IECM have highlighted other key pathomechanisms, including altered interactome of MS with methionine synthase reductase, MMACHC, and MMADHC, endoplasmic reticulum stress, altered cell signaling, and genomic/epigenomic dysregulations. Decreased MS activity increases catalytic protein phosphatase 2A (PP2A) and produces imbalanced phosphorylation/methylation of nucleocytoplasmic RNA binding proteins, including ELAVL1/HuR protein, with subsequent nuclear sequestration of mRNAs and dramatic alteration of gene expression, including SIRT1. Decreased SAM and SIRT1 activity induce ER stress through impaired SIRT1-deacetylation of HSF1 and hypomethylation/hyperacetylation of peroxisome proliferator-activated receptor-γ coactivator-1α (PGC1α), which deactivate nuclear receptors and lead to impaired energy metabolism and neuroplasticity. The reversibility of these pathomechanisms by SIRT1 agonists opens promising perspectives in the treatment of IECM outcomes resistant to conventional supplementation therapies.
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Affiliation(s)
- Jean-Louis Guéant
- UMR Inserm 1256 N-GERE (Nutrition, Génetique et Exposition aux Risques Environmentaux), Université de Lorraine, Vandoeuvre-lès-Nancy, France.,Departments of Digestive Diseases and Molecular Medicine and National Center of Inborn Errors of Metabolism, University Hospital Center, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Rosa-Maria Guéant-Rodriguez
- UMR Inserm 1256 N-GERE (Nutrition, Génetique et Exposition aux Risques Environmentaux), Université de Lorraine, Vandoeuvre-lès-Nancy, France.,Departments of Digestive Diseases and Molecular Medicine and National Center of Inborn Errors of Metabolism, University Hospital Center, Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - Viola J Kosgei
- UMR Inserm 1256 N-GERE (Nutrition, Génetique et Exposition aux Risques Environmentaux), Université de Lorraine, Vandoeuvre-lès-Nancy, France
| | - David Coelho
- UMR Inserm 1256 N-GERE (Nutrition, Génetique et Exposition aux Risques Environmentaux), Université de Lorraine, Vandoeuvre-lès-Nancy, France
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20
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Gana W, De Luca A, Debacq C, Poitau F, Poupin P, Aidoud A, Fougère B. Analysis of the Impact of Selected Vitamins Deficiencies on the Risk of Disability in Older People. Nutrients 2021; 13:3163. [PMID: 34579039 PMCID: PMC8469089 DOI: 10.3390/nu13093163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/03/2021] [Accepted: 09/05/2021] [Indexed: 02/07/2023] Open
Abstract
Vitamin deficiencies have a serious impact on healthy aging in older people. Many age-related disorders have a direct or indirect impact on nutrition, both in terms of nutrient assimilation and food access, which may result in vitamin deficiencies and may lead to or worsen disabilities. Frailty is characterized by reduced functional abilities, with a key role of malnutrition in its pathogenesis. Aging is associated with various changes in body composition that lead to sarcopenia. Frailty, aging, and sarcopenia all favor malnutrition, and poor nutritional status is a major cause of geriatric morbidity and mortality. In the present narrative review, we focused on vitamins with a significant risk of deficiency in high-income countries: D, C, and B (B6/B9/B12). We also focused on vitamin E as the main lipophilic antioxidant, synergistic to vitamin C. We first discuss the role and needs of these vitamins, the prevalence of deficiencies, and their causes and consequences. We then look at how these vitamins are involved in the biological pathways associated with sarcopenia and frailty. Lastly, we discuss the critical early diagnosis and management of these deficiencies and summarize potential ways of screening malnutrition. A focused nutritional approach might improve the diagnosis of nutritional deficiencies and the initiation of appropriate clinical interventions for reducing the risk of frailty. Further comprehensive research programs on nutritional interventions are needed, with a view to lowering deficiencies in older people and thus decreasing the risk of frailty and sarcopenia.
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Affiliation(s)
- Wassim Gana
- Division of Geriatric Medicine, Regional University Hospital Centre, 37000 Tours, France; (F.P.); (A.A.); (B.F.)
- Geriatrics Mobile Units, Regional University Hospital Centre, 37000 Tours, France; (C.D.); (P.P.)
| | - Arnaud De Luca
- Nutrition Mobile Unit, Regional University Hospital Centre, 37000 Tours, France;
- Inserm UMR 1069, Nutrition, Croissance et Cancer, 37032 Tours, France
| | - Camille Debacq
- Geriatrics Mobile Units, Regional University Hospital Centre, 37000 Tours, France; (C.D.); (P.P.)
| | - Fanny Poitau
- Division of Geriatric Medicine, Regional University Hospital Centre, 37000 Tours, France; (F.P.); (A.A.); (B.F.)
| | - Pierre Poupin
- Geriatrics Mobile Units, Regional University Hospital Centre, 37000 Tours, France; (C.D.); (P.P.)
| | - Amal Aidoud
- Division of Geriatric Medicine, Regional University Hospital Centre, 37000 Tours, France; (F.P.); (A.A.); (B.F.)
- Geriatrics Mobile Units, Regional University Hospital Centre, 37000 Tours, France; (C.D.); (P.P.)
| | - Bertrand Fougère
- Division of Geriatric Medicine, Regional University Hospital Centre, 37000 Tours, France; (F.P.); (A.A.); (B.F.)
- Education, Ethics, Health (EA 7505), Tours University, 37000 Tours, France
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21
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Kiessling E, Nötzli S, Todorova V, Forny M, Baumgartner MR, Samardzija M, Krijt J, Kožich V, Grimm C, Froese DS. Absence of MMACHC in peripheral retinal cells does not lead to an ocular phenotype in mice. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166201. [PMID: 34147638 DOI: 10.1016/j.bbadis.2021.166201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/25/2021] [Accepted: 06/08/2021] [Indexed: 01/10/2023]
Abstract
Combined methylmalonic aciduria with homocystinuria (cblC type) is a rare disease caused by mutations in the MMACHC gene. MMACHC encodes an enzyme crucial for intracellular vitamin B12 metabolism, leading to the accumulation of toxic metabolites e.g. methylmalonic acid (MMA) and homocysteine (Hcy), and secondary disturbances in folate and one-carbon metabolism when not fully functional. Patients with cblC deficiency often present in the neonatal or early childhood period with a severe multisystem pathology, which comprises a broad spectrum of treatment-resistant ophthalmological phenotypes, including retinal degeneration, impaired vision, and vascular changes. To examine the potential function of MMACHC in the retina and how its loss may impact disease, we performed gene expression studies in human and mouse, which showed that local expression of MMACHC in the retina and retinal pigment epithelium is relatively stable over time. To study whether functional MMACHC is required for retinal function and tissue integrity, we generated a transgenic mouse lacking Mmachc expression in cells of the peripheral retina. Characterization of this mouse revealed accumulation of cblC disease related metabolites, including MMA and the folate-dependent purine synthesis intermediates AICA-riboside and SAICA-riboside in the retina. Nevertheless, fundus appearance, morphology, vasculature, and cellular composition of the retina, as well as ocular function, remained normal in mice up to 6 or 12 months of age. Our data indicates that peripheral retinal neurons do not require intrinsic expression of Mmachc for survival and function and questions whether a local MMACHC deficiency is responsible for the retinal phenotypes in patients.
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Affiliation(s)
- Eva Kiessling
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland
| | - Sarah Nötzli
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland
| | - Vyara Todorova
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland
| | - Merima Forny
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Switzerland
| | - Matthias R Baumgartner
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Switzerland
| | - Marijana Samardzija
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland
| | - Jakub Krijt
- Dept. of Pediatrics and Inherited Metabolic Disorders, Charles University-First Faculty of Medicine and General University Hospital, Prague, Czech Republic
| | - Viktor Kožich
- Dept. of Pediatrics and Inherited Metabolic Disorders, Charles University-First Faculty of Medicine and General University Hospital, Prague, Czech Republic
| | - Christian Grimm
- Lab for Retinal Cell Biology, Dept. Ophthalmology, University Hospital Zurich, University of Zürich, Switzerland.
| | - D Sean Froese
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Switzerland.
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22
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Cooke LDF, Tumbarello DA, Harvey NC, Sethi JK, Lewis RM, Cleal JK. Endocytosis in the placenta: An undervalued mediator of placental transfer. Placenta 2021; 113:67-73. [PMID: 33994009 DOI: 10.1016/j.placenta.2021.04.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 04/21/2021] [Accepted: 04/27/2021] [Indexed: 12/16/2022]
Abstract
Endocytosis is an essential mechanism for cellular uptake in many human tissues. A range of endocytic mechanisms occur including clathrin-dependent and -independent mechanisms. However, the role of endocytosis in the placenta and the spatial localisation of individual mechanisms is not well understood. The two principal cell layers that comprise the placental barrier to maternal-fetal transfer are the syncytiotrophoblast and fetal capillary endothelium. Endocytic uptake into the syncytiotrophoblast has been demonstrated for physiological maternal molecules such as transferrin-bound iron and low density lipoprotein (LDL) and may play an important role in the uptake of several other micronutrients, serum proteins, and therapeutics at both major placental cell barriers. These mechanisms may also mediate placental uptake of some viruses and nanoparticles. This review introduces the mechanisms of cargo-specific endocytosis and what is known about their localisation in the placenta, focussing predominantly on the syncytiotrophoblast. A fuller understanding of placental endocytosis is necessary to explain both fetal nutrition and the properties of the placental barrier. Characterising placental endocytic mechanisms and their regulation may allow us to identify their role in pregnancy pathologies and provide new avenues for therapeutic intervention.
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Affiliation(s)
- Laura D F Cooke
- The Institute of Developmental Sciences, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK.
| | - David A Tumbarello
- Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Highfield Campus, Life Sciences Building 85, Southampton, SO17 1BJ, UK
| | - Nicholas C Harvey
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, SO16 6YD, UK
| | - Jaswinder K Sethi
- The Institute of Developmental Sciences, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK; NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, SO16 6YD, UK; Institute for Life Sciences, University of Southampton, Southampton, United Kingdom
| | - Rohan M Lewis
- The Institute of Developmental Sciences, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK; Institute for Life Sciences, University of Southampton, Southampton, United Kingdom
| | - Jane K Cleal
- The Institute of Developmental Sciences, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK; Institute for Life Sciences, University of Southampton, Southampton, United Kingdom
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23
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Fang H, Cavaliere A, Li Z, Huang Y, Marquez-Nostra B. Preclinical Advances in Theranostics for the Different Molecular Subtypes of Breast Cancer. Front Pharmacol 2021; 12:627693. [PMID: 33986665 PMCID: PMC8111013 DOI: 10.3389/fphar.2021.627693] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/22/2021] [Indexed: 12/29/2022] Open
Abstract
Breast cancer is the most common cancer in women worldwide. The heterogeneity of breast cancer and drug resistance to therapies make the diagnosis and treatment difficult. Molecular imaging methods with positron emission tomography (PET) and single-photon emission tomography (SPECT) provide useful tools to diagnose, predict, and monitor the response of therapy, contributing to precision medicine for breast cancer patients. Recently, many efforts have been made to find new targets for breast cancer therapy to overcome resistance to standard of care treatments, giving rise to new therapeutic agents to offer more options for patients with breast cancer. The combination of diagnostic and therapeutic strategies forms the foundation of theranostics. Some of these theranostic agents exhibit high potential to be translated to clinic. In this review, we highlight the most recent advances in theranostics of the different molecular subtypes of breast cancer in preclinical studies.
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Affiliation(s)
- Hanyi Fang
- PET Center, Department of Radiology and Biomedical Imaging, School of Medicine, Yale University, New Haven, CT, United States.,Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Alessandra Cavaliere
- PET Center, Department of Radiology and Biomedical Imaging, School of Medicine, Yale University, New Haven, CT, United States
| | - Ziqi Li
- PET Center, Department of Radiology and Biomedical Imaging, School of Medicine, Yale University, New Haven, CT, United States.,Department of Nuclear Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yiyun Huang
- PET Center, Department of Radiology and Biomedical Imaging, School of Medicine, Yale University, New Haven, CT, United States
| | - Bernadette Marquez-Nostra
- PET Center, Department of Radiology and Biomedical Imaging, School of Medicine, Yale University, New Haven, CT, United States
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24
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The avian retroviral receptor Tva mediates the uptake of transcobalamin bound vitamin B12 (cobalamin). J Virol 2021; 95:JVI.02136-20. [PMID: 33504597 PMCID: PMC8103681 DOI: 10.1128/jvi.02136-20] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The Avian sarcoma and leukosis viruses (ASLVs) are important chicken pathogens. Some of the virus subgroups, including ASLV-A and K, utilize the Tva receptor for cell entrance. Though Tva was identified three decades ago, its physiological function remains unknown. Previously, we have noted an intriguing resemblance and orthology between the chicken gene coding for Tva and the human gene coding for CD320, a receptor involved in cellular uptake of transcobalamin (TC) in complex with vitamin B12/cobalamin (Cbl).Here we show that both the transmembrane and the glycosylphosphatidylinositol (GPI)-anchored form of Tva in the chicken cell line DF-1 promotes the uptake of Cbl with help of expressed and purified chicken TC. The uptake of TC-Cbl complex was monitored using an isotope- or fluorophore-labeled Cbl. We show that (i) TC-Cbl is internalized in chicken cells; and (ii) the uptake is lower in the Tva-knockout cells and higher in Tva-overexpressing cells when compared with wild type chicken cells. The relation between physiological function of Tva and its role in infection was elaborated by showing that infection with ASLV subgroups (targeting Tva) impairs the uptake of TC-Cbl, while this is not the case for cells infected with ASLV-B (not recognized by Tva). In addition, exposure of the cells to a high concentration of TC-Cbl alleviates the infection with Tva-dependent ASLV.IMPORTANCE: We demonstrate that the ASLV receptor Tva participates in the physiological uptake of TC-Cbl, because the viral infection suppresses the uptake of Cbl and vice versa. Our results pave the road for future studies addressing the issues: (i) whether a virus infection can be inhibited by TC-Cbl complexes in vivo; and (ii) whether any human virus employs the human TC-Cbl receptor CD320. In broader terms, our study sheds light on the intricate interplay between physiological roles of cellular receptors and their involvement in virus infection.
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25
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Elzi DJ, Bauta WE, Sanchez JR, Das T, Mogare S, Zannes Fatland P, Iza M, Pertsemlidis A, Rebel VI. Identification of a novel mechanism for meso-tetra (4-carboxyphenyl) porphyrin (TCPP) uptake in cancer cells. FASEB J 2021; 35:e21427. [PMID: 33629776 DOI: 10.1096/fj.202000197r] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 01/13/2021] [Accepted: 01/22/2021] [Indexed: 01/23/2023]
Abstract
Porphyrins are used for cancer diagnostic and therapeutic applications, but the mechanism of how porphyrins accumulate in cancer cells remains elusive. Knowledge of how porphyrins enter cancer cells can aid the development of more accurate cancer diagnostics and therapeutics. To gain insight into porphyrin uptake mechanisms in cancer cells, we developed a flow cytometry assay to quantify cellular uptake of meso-tetra (4-carboxyphenyl) porphyrin (TCPP), a porphyrin that is currently being developed for cancer diagnostics. We found that TCPP enters cancer cells through clathrin-mediated endocytosis. The LDL receptor, previously implicated in the cellular uptake of other porphyrins, only contributes modestly to uptake. We report that TCPP instead binds strongly ( K D = 42 nM ) to CD320, the cellular receptor for cobalamin/transcobalamin II (Cbl/TCN2). Additionally, TCPP competes with Cbl/TCN2 for CD320 binding, suggesting that CD320 is a novel receptor for TCPP. Knockdown of CD320 inhibits TCPP uptake by up to 40% in multiple cancer cell lines, including lung, breast, and prostate cell lines, which supports our hypothesis that CD320 both binds to and transports TCPP into cancer cells. Our findings provide some novel insights into why porphyrins concentrate in cancer cells. Additionally, our study describes a novel function for the CD320 receptor which has been reported to transport only Cbl/TCN2 complexes.
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Affiliation(s)
- David J Elzi
- BioAffinity Technologies, Inc., San Antonio, TX, USA
| | | | | | - Trisha Das
- BioAffinity Technologies, Inc., San Antonio, TX, USA
| | - Shweta Mogare
- BioAffinity Technologies, Inc., San Antonio, TX, USA
| | | | - Moises Iza
- BioAffinity Technologies, Inc., San Antonio, TX, USA
| | - Alexander Pertsemlidis
- Department of Pediatrics, The University of Texas Health Science Center, San Antonio, TX, USA.,Department of Cell Systems & Anatomy, The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.,Greehey Children's Cancer Research Institute, The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.,Mays Cancer Center, UT Health San Antonio MD Anderson, San Antonio, TX, USA
| | - Vivienne I Rebel
- BioAffinity Technologies, Inc., San Antonio, TX, USA.,Department of Cell Systems & Anatomy, The University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
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26
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Baumschlager A, Khammash M. Synthetic Biological Approaches for Optogenetics and Tools for Transcriptional Light-Control in Bacteria. Adv Biol (Weinh) 2021; 5:e2000256. [PMID: 34028214 DOI: 10.1002/adbi.202000256] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 01/11/2021] [Indexed: 12/22/2022]
Abstract
Light has become established as a tool not only to visualize and investigate but also to steer biological systems. This review starts by discussing the unique features that make light such an effective control input in biology. It then gives an overview of how light-control came to progress, starting with photoactivatable compounds and leading up to current genetic implementations using optogenetic approaches. The review then zooms in on optogenetics, focusing on photosensitive proteins, which form the basis for optogenetic engineering using synthetic biological approaches. As the regulation of transcription provides a highly versatile means for steering diverse biological functions, the focus of this review then shifts to transcriptional light regulators, which are presented in the biotechnologically highly relevant model organism Escherichia coli.
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Affiliation(s)
- Armin Baumschlager
- Department of Biosystems Science and Engineering (D-BSSE), ETH-Zürich, Mattenstrasse 26, Basel, 4058, Switzerland
| | - Mustafa Khammash
- Department of Biosystems Science and Engineering (D-BSSE), ETH-Zürich, Mattenstrasse 26, Basel, 4058, Switzerland
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27
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Rzepka Z, Rok J, Maszczyk M, Beberok A, Hermanowicz JM, Pawlak D, Gryko D, Wrześniok D. Response of Human Glioblastoma Cells to Vitamin B12 Deficiency: A Study Using the Non-Toxic Cobalamin Antagonist. BIOLOGY 2021; 10:biology10010069. [PMID: 33478021 PMCID: PMC7835758 DOI: 10.3390/biology10010069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/11/2021] [Accepted: 01/15/2021] [Indexed: 12/25/2022]
Abstract
The most important biological function of vitamin B12 is to accomplish DNA synthesis, which is necessary for cell division. Cobalamin deficiency may be especially acute for rapidly dividing cells, such as glioblastoma cells. Therefore, cobalamin antagonists offer a medicinal potential for developing anti-glioma agents. In the present study, we developed an in vitro model of cobalamin deficiency in glioblastoma cells. Long-term treatment of cells with the cobalamin analogue, hydroxycobalamin [c-lactam] (HCCL) was applied to induce an increase of hypocobalaminemia biomarker. Cytometric assays demonstrated that vitamin B12 promoted glioblastoma cells proliferation, whereas the treatment of cells with HCCL caused a dramatic inhibition of cell proliferation and an induction of cell cycle arrest at the G2/M phase. Vitamin B12 counteracted all the observed effects of HCCL. In the in silico study, we characterized the molecular interactions between HCCL and transcobalamin II (TCII). We have demonstrated that HCCL shares similar interactions with TCII as naturally occurring cobalamins and therefore may act as a competitive inhibitor of this key transporter protein. We assessed the impact of HCCL on the mortality or developmental malformations of zebrafish embryos. Collectively, our findings suggest that the use of cobalamin transport antagonists as potential anti-glioma agents would be worth exploring further.
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Affiliation(s)
- Zuzanna Rzepka
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland; (Z.R.); (J.R.); (M.M.); (A.B.)
| | - Jakub Rok
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland; (Z.R.); (J.R.); (M.M.); (A.B.)
| | - Mateusz Maszczyk
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland; (Z.R.); (J.R.); (M.M.); (A.B.)
| | - Artur Beberok
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland; (Z.R.); (J.R.); (M.M.); (A.B.)
| | - Justyna Magdalena Hermanowicz
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland; (J.M.H.); (D.P.)
| | - Dariusz Pawlak
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland; (J.M.H.); (D.P.)
| | - Dorota Gryko
- Institute of Organic Chemistry, Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland;
| | - Dorota Wrześniok
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Jagiellońska 4, 41-200 Sosnowiec, Poland; (Z.R.); (J.R.); (M.M.); (A.B.)
- Correspondence: ; Tel.: +48-323-641-050
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28
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Whole exome sequencing, a hypothesis-free approach to investigate recurrent early miscarriage. Reprod Biomed Online 2021; 42:789-798. [PMID: 33658156 DOI: 10.1016/j.rbmo.2021.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/19/2020] [Accepted: 01/12/2021] [Indexed: 12/11/2022]
Abstract
RESEARCH QUESTION Are there genetic determinants shared by unrelated women with unexplained recurrent early miscarriage (REM)? DESIGN Thirty REM cases and 30 controls were selected with extreme phenotype among women from Eastern Brittany (France), previously enrolled in an incident case-control study on thrombophilic mutations. Cases and controls were selected based on the number of early miscarriages or live births, respectively. Peripheral blood was collected for DNA extraction at initial visit. The burden of low-frequency variants in the coding part of the genes was compared using whole exome sequencing (WES). RESULTS Cases had 3 to 17 early miscarriages (20 cases: ≥5 previous losses). Controls had 1 to 4 live births (20 controls: ≥3 previous live births) and no miscarriages. WES data were available for 29 cases and 30 controls. A total of 209,387 variants were found (mean variant per patient: 59,073.05) with no difference between groups (P = 0.68). The top five most significantly associated genes were ABCA4, NFAM1, TCN2, AL078585.1 and EPS15. Previous studies suggest the involvement of vitamin B12 deficiency in REM. TCN2 encodes for vitamin B12 transporter into cells. Therefore, holotranscobalamin (active vitamin B12) was measured for both cases and controls (81.2 ± 32.1 versus 92.9 ± 34.3 pmol/l, respectively, P = 0.186). Five cases but no controls were below 50 pmol/l (P = 0.052). CONCLUSIONS This study highlights four new genes of interest in REM, some of which belong to known networks of genes involved in embryonic development (clathrin-mediated endocytosis and ciliary pathway). The study also confirms the involvement of TCN2 (vitamin B12 pathway) in the early first trimester of pregnancy.
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29
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Finkelstein JL, Qi YP, Fothergill A, Crider KS. Vitamin B12 supplementation during pregnancy for maternal and child health outcomes. Hippokratia 2020. [DOI: 10.1002/14651858.cd013823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Yan Ping Qi
- National Center on Birth Defects and Developmental Disabilities; Centers for Disease Control and Prevention; Atlanta GA USA
| | - Amy Fothergill
- Division of Nutritional Sciences; Cornell University; Ithaca New York USA
| | - Krista S Crider
- National Center on Birth Defects and Developmental Disabilities; Centers for Disease Control and Prevention; Atlanta GA USA
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30
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Szakacs G, Abele R. An inventory of lysosomal ABC transporters. FEBS Lett 2020; 594:3965-3985. [DOI: 10.1002/1873-3468.13967] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/23/2020] [Accepted: 10/15/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Gergely Szakacs
- Institute of Enzymology Research Centre of Natural Sciences Eötvös Loránd Research Network Budapest Hungary
- Institute of Cancer Research Medical University of Vienna Vienna Austria
| | - Rupert Abele
- Institute of Biochemistry Goethe‐University Frankfurt am Main Frankfurt am Main Germany
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31
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Zhang C, Chen Y, Sun S, Zhang Y, Wang L, Luo Z, Liu M, Dong L, Dong N, Wu Q. A conserved LDL-receptor motif regulates corin and CD320 membrane targeting in polarized renal epithelial cells. eLife 2020; 9:56059. [PMID: 33136001 PMCID: PMC7605860 DOI: 10.7554/elife.56059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 10/19/2020] [Indexed: 12/27/2022] Open
Abstract
Selective protein distribution on distinct plasma membranes is important for epithelial cell function. To date, how proteins are directed to specific epithelial cell surface is not fully understood. Here we report a conserved DSSDE motif in LDL-receptor (LDLR) modules of corin (a transmembrane serine protease) and CD320 (a receptor for vitamin B12 uptake), which regulates apical membrane targeting in renal epithelial cells. Altering this motif prevents specific apical corin and CD320 expression in polarized Madin-Darby canine kidney (MDCK) cells. Mechanistic studies indicate that this DSSDE motif participates in a Rab11a-dependent mechanism that specifies apical sorting. In MDCK cells, inhibition of Rab11a, but not Rab11b, expression leads to corin and CD320 expression on both apical and basolateral membranes. Together, our results reveal a novel molecular recognition mechanism that regulates LDLR module-containing proteins in their specific apical expression in polarized renal epithelial cells.
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Affiliation(s)
- Ce Zhang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China
| | - Yue Chen
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China
| | - Shijin Sun
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China.,MOH Key Laboratory of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yikai Zhang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China.,MOH Key Laboratory of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lina Wang
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China
| | - Zhipu Luo
- Institute of Molecular Enzymology, Soochow University, Suzhou, China
| | - Meng Liu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China
| | - Liang Dong
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China
| | - Ningzheng Dong
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China.,MOH Key Laboratory of Thrombosis and Hemostasis, Jiangsu Institute of Hematology, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Qingyu Wu
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Prevention, Soochow University, Suzhou, China.,Cardiovascular & Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, United States
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32
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Dudi P, Rani A, Goyal B, Kampani G, Rabari K, Kothari A, Saha S. Association of vitamin B12 transporter protein (transcobalamin II) genetic polymorphisms with risk of stroke: An observational pilot study in north Indian population. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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33
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3'-UTR Polymorphisms of Vitamin B-Related Genes Are Associated with Osteoporosis and Osteoporotic Vertebral Compression Fractures (OVCFs) in Postmenopausal Women. Genes (Basel) 2020; 11:genes11060612. [PMID: 32498429 PMCID: PMC7349196 DOI: 10.3390/genes11060612] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/23/2020] [Accepted: 05/27/2020] [Indexed: 12/11/2022] Open
Abstract
As life expectancy increases, the prevalence of osteoporosis is increasing. In addition to vitamin D which is well established to have an association with osteoporosis, B vitamins, such as thiamine, folate (vitamin B9), and cobalamin (vitamin B12), could affect bone metabolism, bone quality, and fracture risk in humans by influencing homocysteine/folate metabolism. Despite the crucial role of B vitamins in bone metabolism, there are few studies regarding associations between B vitamin-related genes and osteoporosis. In this study, we investigated the genetic association of four single nucleotide polymorphisms (SNPs) within the 3’-untranslated regions of vitamin B-related genes, including TCN2 (encodes transcobalamin II), CD320 (encodes transcobalamin II receptor), SLC19A1 (encodes reduced folate carrier protein 1), and SLC19A2 (encodes thiamine carrier 1), with osteoporosis and osteoporotic vertebral compression fracture (OVCF). We recruited 301 postmenopausal women and performed genotyping of CD320 rs9426C>T,TCN2 rs10418C>T, SLC19A1 rs1051296G>T, and SLC19A2 rs16862199C>T using a polymerization chain reaction-restriction fragment length polymorphism assay. There was a significantly higher incidence of both osteoporosis (AOR 5.019; 95% CI, 1.533–16.430, p < 0.05) and OVCF (AOR, 5.760; 95% CI, 1.480–22.417, p < 0.05) in individuals with genotype CD320 CT+TT and high homocysteine concentrations. Allele combination analysis revealed that two combinations, namely CD320 C-TCN2 T-SLC19A1 T-SLC19A2 C (OR, 3.244; 95% CI, 1.478–7.120, p < 0.05) and CD320 T-TCN2 C-SLC19A1 G-SLC19A2 C (OR, 2.287; 95% CI, 1.094–4.782, p < 0.05), were significantly more frequent among the osteoporosis group. Our findings suggest that SNPs within the CD320 gene in 3´-UTR may contribute to osteoporosis and OVCF occurrences in some individuals. Furthermore, specific allele combinations of CD320, TCN2, SLC19A1, and SLC19A2 may contribute to increased susceptibility to osteoporosis and OVCF.
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Kather S, Grützner N, Kook PH, Dengler F, Heilmann RM. Review of cobalamin status and disorders of cobalamin metabolism in dogs. J Vet Intern Med 2019; 34:13-28. [PMID: 31758868 PMCID: PMC6979111 DOI: 10.1111/jvim.15638] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 09/25/2019] [Indexed: 12/04/2022] Open
Abstract
Disorders of cobalamin (vitamin B12) metabolism are increasingly recognized in small animal medicine and have a variety of causes ranging from chronic gastrointestinal disease to hereditary defects in cobalamin metabolism. Measurement of serum cobalamin concentration, often in combination with serum folate concentration, is routinely performed as a diagnostic test in clinical practice. While the detection of hypocobalaminemia has therapeutic implications, interpretation of cobalamin status in dogs can be challenging. The aim of this review is to define hypocobalaminemia and cobalamin deficiency, normocobalaminemia, and hypercobalaminemia in dogs, describe known cobalamin deficiency states, breed predispositions in dogs, discuss the different biomarkers of importance for evaluating cobalamin status in dogs, and discuss the management of dogs with hypocobalaminemia.
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Affiliation(s)
- Stefanie Kather
- Department for Small Animals, Veterinary Teaching Hospital, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Niels Grützner
- Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,School of Veterinary Science, Massey University, Palmerston North, New Zealand
| | - Peter H Kook
- Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Franziska Dengler
- Institute of Veterinary Physiology, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - Romy M Heilmann
- Department for Small Animals, Veterinary Teaching Hospital, College of Veterinary Medicine, University of Leipzig, Leipzig, Germany.,School of Veterinary Science, Massey University, Palmerston North, New Zealand
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Mendonça N, Jagger C, Granic A, Martin-Ruiz C, Mathers JC, Seal CJ, Hill TR. Elevated Total Homocysteine in All Participants and Plasma Vitamin B12 Concentrations in Women Are Associated With All-Cause and Cardiovascular Mortality in the Very Old: The Newcastle 85+ Study. J Gerontol A Biol Sci Med Sci 2019. [PMID: 29529168 PMCID: PMC6093381 DOI: 10.1093/gerona/gly035] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Folate and vitamin B12 are keys to the correct functioning of one-carbon (1-C) metabolism. The current evidence on associations between 1-C metabolism biomarkers and mortality is inconclusive and generally based on younger or institutionalized populations. This study aimed to determine the associations between biomarkers of 1-C metabolism and all-cause and cardiovascular (CVD) mortality in the very old. Methods The Newcastle 85+ Study is a prospective longitudinal study of participants aged 85 at recruitment living in Northeast England. Baseline red blood cell folate (RBC folate), plasma vitamin B12, and total homocysteine (tHcy) concentrations were available for 752-766 participants. Associations between biomarkers of 1-C metabolism and all-cause and CVD mortality for up to 9 years were assessed by Cox proportional hazard models and confirmed by restricted cubic splines. Results Participants with higher tHcy concentrations had higher risk of death from any cause (hazard ratio [HR] [×10 μmol/L]: 1.24, 95% confidence interval [CI]: 1.10-1.41) and cardiovascular diseases (HR [×10 μmol/L]: 1.23, 95% CI: 1.04-1.45) than those with lower concentrations; and women with higher plasma vitamin B12 concentrations had increased risk of all-cause and cardiovascular mortality (HR [×100 pmol/L]: 1.10, 95% CI: 1.04-1.16) after adjustment for key sociodemographic, lifestyle, and health confounders. Conclusion Higher concentrations of tHcy in all participants and plasma vitamin B12 in women were associated with increased risk of all-cause and CVD mortality in the very old. This confirms findings for tHcy in younger populations but the adverse relationships between elevated plasma vitamin B12 concentrations and mortality in this setting are novel and require further investigation.
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Affiliation(s)
- Nuno Mendonça
- Institute of Cellular Medicine, Newcastle upon Tyne, UK.,Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Human Nutrition Research Centre, Newcastle University, Newcastle upon Tyne, UK.,Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
| | - Carol Jagger
- Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
| | - Antoneta Granic
- AGE Research Group, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK.,NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle upon Tyne NHS Foundation Trust, UK
| | - Carmen Martin-Ruiz
- Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK
| | - John C Mathers
- Institute of Cellular Medicine, Newcastle upon Tyne, UK.,Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Human Nutrition Research Centre, Newcastle University, Newcastle upon Tyne, UK
| | - Chris J Seal
- Institute of Cellular Medicine, Newcastle upon Tyne, UK.,Human Nutrition Research Centre, Newcastle University, Newcastle upon Tyne, UK
| | - Tom R Hill
- Institute of Cellular Medicine, Newcastle upon Tyne, UK.,Newcastle University Institute for Ageing, Newcastle University, Newcastle upon Tyne, UK.,Human Nutrition Research Centre, Newcastle University, Newcastle upon Tyne, UK
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Shetty SA, Young MF, Taneja S, Rangiah K. Quantification of B-vitamins from different fresh milk samples using ultra-high performance liquid chromatography mass spectrometry/selected reaction monitoring methods. J Chromatogr A 2019; 1609:460452. [PMID: 31443970 DOI: 10.1016/j.chroma.2019.460452] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/08/2019] [Accepted: 08/12/2019] [Indexed: 12/28/2022]
Abstract
Absolute quantification of B-vitamins in milk is becoming imperative to correlate its impact on child/human health. In today's world of changing food habits and environmental pollution, there is concern if milk is what we think it to be. In the present work, ultra-high performance liquid chromatography mass spectrometry/selected reaction monitoring (UPHPLC-MS/SRM) methods have been developed and validated for quantitative estimation of 21 different B-vitamins [B1-3, B2-3, B3-2, B5-1, B6-5, B8-1, B9-2 vitamins, total choline (betaine, choline and acetylcholine)] from a drop (50 µL) and B12 from 500 µL of milk. These two methods qualify all essential bio-analytical parameters (recovery >80%, accuracy <±15%, variation <±10%) and are highly reproducible. By using these developed methods, B-vitamins in different fresh milk samples from cow, goat, buffalo and pasteurized cow milk (each 10 and total n = 40) were analysed. Total choline is the highest (6.5-10.5 µg/mL) and vitamin B8 is the lowest (16.1-32.9 ng/mL) in all milk samples. Inverse correlation between vitamin B2 and B5 was observed in milk samples. The ratio of vitamin B5/B2 was checked in all milk samples, it is higher in cow (2.64), equal in goat (1.04) and lower in buffalo (0.42) milk. Total B-vitamin content in cow milk is higher (10.5 µg/mL) compared to other three (goat-7.2, buffalo-6.5, pasteurized-8.8 µg/mL). Vitamin B12 is higher in cow milk (3.6 ng/mL) compared to other two fresh milk samples. Different isomers for vitamin B6 were noticed in the fresh milk samples. The complete profile of water soluble vitamins and the ratio of two abundant B vitamins (B5/B2) in milk will be useful to check the nutritional quality and to differentiate the kind of animal milk.
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Affiliation(s)
- Sweekruthi A Shetty
- Food Safety & Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute, Mysore-570020, India
| | - Melissa F Young
- The Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, USA
| | - Sunita Taneja
- Centre for Health Research and Development, Society for Applied Studies, 45, Kalu Sarai, New Delhi-110016, India
| | - Kannan Rangiah
- Food Safety & Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute, Mysore-570020, India.
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Fiocco AJ, Krieger L, D'Amico D, Parrott MD, Laurin D, Gaudreau P, Greenwood C, Ferland G. A systematic review of existing peripheral biomarkers of cognitive aging: Is there enough evidence for biomarker proxies in behavioral modification interventions?: An initiative in association with the nutrition, exercise and lifestyle team of the Canadian Consortium on Neurodegeneration in Aging. Ageing Res Rev 2019; 52:72-119. [PMID: 31059801 DOI: 10.1016/j.arr.2019.04.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 03/09/2019] [Accepted: 04/29/2019] [Indexed: 12/15/2022]
Abstract
Peripheral biomarkers have shown significant value in predicting brain health and may serve as a useful proxy measurement in the assessment of evidence-based lifestyle behavior modification programs, including physical activity and nutrition programs, that aim to maintain cognitive function in late life. The aim of this systematic review was to elucidate which peripheral biomarkers are robustly associated with cognitive function among relatively healthy non-demented older adults. Following the standards for systematic reviews (PICO, PRIMSA), and employing MEDLINE and Scopus search engines, 222 articles were included in the review. Based on the review of biomarker proxies of cognitive health, it is recommended that a comprehensive biomarker panel, or biomarker signature, be developed as a clinical end point for behavior modification trials aimed at enhancing cognitive function in late life. The biomarker signature should take a multisystemic approach, including lipid, immune/inflammatory, and metabolic biomarkers in the biological signature index of cognitive health.
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Affiliation(s)
| | - Laura Krieger
- Department of Psychology, Ryerson University, Toronto, ON, Canada
| | - Danielle D'Amico
- Department of Psychology, Ryerson University, Toronto, ON, Canada
| | | | - Danielle Laurin
- Laval University, Centre de recherche du CHU de Québec, QC, Canada
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Pavlov CS, Damulin IV, Shulpekova YO, Andreev EA. Neurological disorders in vitamin B12 deficiency. TERAPEVT ARKH 2019; 91:122-129. [PMID: 31094486 DOI: 10.26442/00403660.2019.04.000116] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The review discusses thesteps of vitamin B12 metabolism and its role in maintaining of neurological functions. The term "vitamin B12 (cobalamin)" refers to several substances (cobalamins) of a very similar structure. Cobalamin enters the body with animal products. On the peripherу cobalamin circulates only in binding with proteins transcobalamin I and II (complex cobalamin-transcobalamin II is designated as "holotranscobalamin"). Holotranscobalamin is absorbed by different cells, whereas transcobalamin I-binded vitamin B12 - only by liver and kidneys. Two forms of cobalamin were identified as coenzymes of cellular reactions which are methylcobalamin (in cytoplasm) and hydroxyadenosylcobalamin (in mitochondria). The main causes of cobalamin deficiency are related to inadequate intake of animal products, autoimmune gastritis, pancreatic insufficiency, terminal ileum disease, syndrome of intestinal bacterial overgrowth. Relative deficiency may be seen in excessive binding of vitamin B12 to transcobalamin I. Cobalamin deficiency most significantly affects functions of blood, nervous system and inflammatory response. Anemia occurs in 13-15% of cases; macrocytosis is an early sign. The average size of neutrophils and monocytes is the most sensitive marker of megaloblastic hematopoiesis. The demands in vitamin B12 are particularly high in nervous tissue. Hypovitaminosis is accompanied by pathological lesions both in white and gray brain matter. Several types of neurological manifestations are described: subacute combined degeneration of spinal cord (funicular myelinosis), sensomotor polyneuropathy, optic nerve neuropathy, cognitive disorders. The whole range of neuropsychiatric disorders with vitamin B12 deficiency has not been studied well enough. Due to certain diagnostic difficulties they are often regarded as "cryptogenic", "reactive", "vascular» origin. Normal or decreased total plasma cobalamin level could not a reliable marker of vitamin deficiency. In difficult cases the content of holotranscobalamin, methylmalonic acid / homocysteine, and folate in the blood serum should be investigated besides carefully analysis of clinical manifestations.
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Affiliation(s)
- Ch S Pavlov
- I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - I V Damulin
- I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - Yu O Shulpekova
- I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - E A Andreev
- I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
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Park HS, Kim JO, An HJ, Ryu CS, Ko EJ, Kim YR, Ahn EH, Lee WS, Kim JH, Kim NK. Genetic polymorphisms of the cobalamin transport system are associated with idiopathic recurrent implantation failure. J Assist Reprod Genet 2019; 36:1513-1522. [PMID: 31123954 DOI: 10.1007/s10815-019-01455-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/16/2019] [Indexed: 12/15/2022] Open
Abstract
PURPOSE Vitamin B12 (cobalamin, Cbl) plays a role in the recycling of folate, which is important in pregnancy. Transcobalamin II (TCN2) and transcobalamin receptor (TCblR) proteins are involved in the cellular uptake of Cbl. TCN2 binds Cbl in the plasma, and TCblR binds TCN2-Cbl at the cell surface. Therefore, we investigated the potential association between polymorphisms in Cbl transport proteins, TCN2 and TCblR, and recurrent implantation failure (RIF) susceptibility. METHODS The genotypes of TCN2 67A>G, TCN2 776C>G, and TCblR 1104C>T were determined for RIF patients and healthy controls using a polymerase chain reaction restriction fragment length polymorphism assay. Additionally, statistical analysis was performed to compare the genotype frequencies between RIF patients and controls. RESULTS The TCN2 67 polymorphism AG type was associated with RIF risk. Some allele combinations that contained the TCN2 67 polymorphism G allele were associated with increased RIF risk, whereas other allele combinations that contained the TCblR 1104 polymorphism T alleles were associated with decreased RIF risk. In genotype combination analysis, two combinations containing the TCN2 67 polymorphism AG type were associated with RIF risk. CONCLUSION Our study showed that the polymorphisms of TCN2 and TCblR are associated with RIF and are potential genetic predisposing factors for RIF among Korean women. Additionally, our findings support a potential role for TCN2 and TCblR in RIF among Korean women. However, further studies are required to investigate the role of the polymorphisms in those proteins and RIF because the roles of the TCN2 and TCblR polymorphisms in RIF are not clear.
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Affiliation(s)
- Han Sung Park
- Department of Biomedical Science, College of Life Science, CHA University, 355, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13488, Republic of Korea
| | - Jung Oh Kim
- Department of Biomedical Science, College of Life Science, CHA University, 355, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13488, Republic of Korea
| | - Hui Jeong An
- Department of Biomedical Science, College of Life Science, CHA University, 355, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13488, Republic of Korea
| | - Chang Soo Ryu
- Department of Biomedical Science, College of Life Science, CHA University, 355, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13488, Republic of Korea
| | - Eun Ju Ko
- Department of Biomedical Science, College of Life Science, CHA University, 355, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13488, Republic of Korea
| | - Young Ran Kim
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University, 11, Yatap-ro 65beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
| | - Eun Hee Ahn
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University, 11, Yatap-ro 65beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea
| | - Woo Sik Lee
- Fertility Center of CHA Gangnam Medical Center, CHA University, 566, Nonhyeon-ro, Gangnam-gu, Seoul, 06135, Republic of Korea
| | - Ji Hyang Kim
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University, 11, Yatap-ro 65beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13496, Republic of Korea.
| | - Nam Keun Kim
- Department of Biomedical Science, College of Life Science, CHA University, 355, Pangyo-ro, Bundang-gu, Seongnam-si, Gyeonggi-do, 13488, Republic of Korea.
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Hydroxycobalamin Reveals the Involvement of Hydrogen Sulfide in the Hypoxic Responses of Rat Carotid Body Chemoreceptor Cells. Antioxidants (Basel) 2019; 8:antiox8030062. [PMID: 30871199 PMCID: PMC6466535 DOI: 10.3390/antiox8030062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/01/2019] [Accepted: 03/09/2019] [Indexed: 12/28/2022] Open
Abstract
Carotid body (CB) chemoreceptor cells sense arterial blood PO2, generating a neurosecretory response proportional to the intensity of hypoxia. Hydrogen sulfide (H2S) is a physiological gaseous messenger that is proposed to act as an oxygen sensor in CBs, although this concept remains controversial. In the present study we have used the H2S scavenger and vitamin B12 analog hydroxycobalamin (Cbl) as a new tool to investigate the involvement of endogenous H2S in CB oxygen sensing. We observed that the slow-release sulfide donor GYY4137 elicited catecholamine release from isolated whole carotid bodies, and that Cbl prevented this response. Cbl also abolished the rise in [Ca2+]i evoked by 50 µM NaHS in enzymatically dispersed CB glomus cells. Moreover, Cbl markedly inhibited the catecholamine release and [Ca2+]i rise caused by hypoxia in isolated CBs and dispersed glomus cells, respectively, whereas it did not alter these responses when they were evoked by high [K+]e. The L-type Ca2+ channel blocker nifedipine slightly inhibited the rise in CB chemoreceptor cells [Ca2+]i elicited by sulfide, whilst causing a somewhat larger attenuation of the hypoxia-induced Ca2+ signal. We conclude that Cbl is a useful and specific tool for studying the function of H2S in cells. Based on its effects on the CB chemoreceptor cells we propose that endogenous H2S is an amplifier of the hypoxic transduction cascade which acts mainly by stimulating non-L-type Ca2+ channels.
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Ströhle A, Richter M, González‐Gross M, Neuhäuser‐Berthold M, Wagner K, Leschik‐Bonnet E, Egert S. The Revised D-A-CH-Reference Values for the Intake of Vitamin B 12 : Prevention of Deficiency and Beyond. Mol Nutr Food Res 2019; 63:e1801178. [PMID: 30657638 PMCID: PMC6590120 DOI: 10.1002/mnfr.201801178] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/07/2019] [Indexed: 12/25/2022]
Abstract
SCOPE The nutrition societies of Germany, Austria, and Switzerland are the joint editors of the "D-A-CH reference values for nutrient intake", which are revised regularly. METHODS AND RESULTS By reviewing vitamin-B12 -related biomarker studies, the reference values for vitamin B12 were revised in 2018. For adults, the estimated intake is based on the adequate serum concentrations of holotranscobalamin and methylmalonic acid. The estimated values for children and adolescents are extrapolated from the adult reference value by considering differences in body mass, an allometric exponent, and growth factors. For infants below 4 months of age, an estimated value is set based on the vitamin B12 intake via breast milk. The reference values for pregnant and lactating women consider the requirements for the fetus and for loss via breast milk. The estimated values for vitamin B12 intake for infants, children, and adolescents range from 0.5 to 4.0 µg d-1 . For adults, the estimated values are set at 4.0 µg d-1 , and for pregnant and lactating women, they are set at 4.5 and 5.5 µg d-1 , respectively. CONCLUSION Based on the data of several vitamin B12 status biomarkers studies, the reference value for vitamin B12 intake for adults is raised from 3.0 to 4.0 µg d-1 .
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Affiliation(s)
- Alexander Ströhle
- Institute of Food Science and Human NutritionLeibniz University HannoverAm Kleinen Felde 3030167HannoverGermany
| | - Margrit Richter
- German Nutrition Society (DGE)Godesberger Allee 1853175BonnGermany
| | - Marcela González‐Gross
- ImFINE Research Group, Department of Health and Human PerformanceUniversidad Politécnica de Madridc/ Martín Fierro 728040MadridSpain
| | | | - Karl‐Heinz Wagner
- Department of Nutritional SciencesUniversity of ViennaAlthanstraße 141090ViennaAustria
| | | | - Sarah Egert
- German Nutrition Society (DGE)Godesberger Allee 1853175BonnGermany
- Institute of Nutritional MedicineUniversity of HohenheimFruwirthstr. 1270599StuttgartGermany
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Konz T, Santoro A, Goulet L, Bazzocchi A, Battista G, Nicoletti C, Kadi F, Ostan R, Goy M, Monnard C, Martin FP, Feige JN, Franceschi C, Rezzi S. Sex-Specific Associations of Blood-Based Nutrient Profiling With Body Composition in the Elderly. Front Physiol 2019; 9:1935. [PMID: 30733685 PMCID: PMC6353856 DOI: 10.3389/fphys.2018.01935] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 12/21/2018] [Indexed: 12/12/2022] Open
Abstract
The intake of adequate amounts and types of nutrients is key for sustaining health and a good quality of life, particularly in the elderly population. There is considerable evidence suggesting that physiological changes related to age and sex modify nutritional needs, and this may be related to age-associated changes in body composition (BC), specifically in lean and fat body mass. However, there is a clear lack of understanding about the association of nutrients in blood and BC parameters in the elderly. This study investigated the relationships among blood nutrients (amino acids, fatty acids, major elements, trace-elements, and vitamins), BC and nutrient intake in a population of 176 healthy male and female Italian adults between the ages of 65 and 79 years. 89 blood markers, 77 BC parameters and dietary intake were evaluated. Multivariate data analysis was applied to infer relationships between datasets. As expected, the major variability between BC and the blood nutrient profile (BNP) observed was related to sex. Aside from clear sex-specific differences in BC, female subjects had higher BNP levels of copper, copper-to-zinc ratio, phosphorous and holotranscobalamin II and lower concentrations of branched-chain amino acids (BCAAs) and proline. Fat mass, percentage of fat mass, percentage of lean mass and the skeletal muscle index (SMI) correlated the most with BNP in both sexes. Our data showed positive correlations in male subjects among ethanolamine, glycine, albumin, and sulfur with SMI, while palmitoleic acid and oleic acid exhibited negative correlations. This differed in female subjects, where SMI was positively associated with albumin, folic acid and sulfur, while CRP, proline and cis-8,11,14-eicosatrienoic acid were negatively correlated. We investigated the influence of diet on the observed BNP and BC correlations. Intriguingly, most of the components of the BNP, except for folate, did not exhibit a correlation with nutrient intake data. An understanding of the physiological and biochemical processes underpinning the observed sex-specific correlations between BNP and BC could help in identifying nutritional strategies to manage BC-changes in aging. This would contribute to a deeper understanding of aging-associated nutritional needs with the aim of helping the elderly population to maintain metabolic health.
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Affiliation(s)
- Tobias Konz
- Nestlé Research, Vers-Chez-Les-Blanc, Lausanne, Switzerland
| | - Aurelia Santoro
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- C.I.G. Interdepartmental Centre “L. Galvani”, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | | | - Alberto Bazzocchi
- Diagnostic and Interventional Radiology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Giuseppe Battista
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Claudio Nicoletti
- Department of Experimental and Clinical Medicine, Section of Anatomy, University of Florence, Florence, Italy
- Gut Health Institute Strategic Programme, Quadram Institute Bioscience, Norwich, United Kingdom
| | - Fawzi Kadi
- School of Health and Medical Sciences, Örebro University, Örebro, Sweden
| | - Rita Ostan
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- C.I.G. Interdepartmental Centre “L. Galvani”, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Michael Goy
- Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | | | | | - Jerome N. Feige
- Nestlé Research, EPFL Innovation Park, Lausanne, Switzerland
| | - Claudio Franceschi
- Department of Experimental, Diagnostic and Specialty Medicine, Alma Mater Studiorum, University of Bologna, Bologna, Italy
- Institute of Neurological Sciences (IRCCS), Bologna, Italy
| | - Serge Rezzi
- Nestlé Research, Vers-Chez-Les-Blanc, Lausanne, Switzerland
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Abstract
Nine compounds are classified as water-soluble vitamins, eight B vitamins and one vitamin C. The vitamins are mandatory for the function of numerous enzymes and lack of one or more of the vitamins may lead to severe medical conditions. All the vitamins are supplied by food in microgram to milligram quantities and in addition some of the vitamins are synthesized by the intestinal microbiota. In the gastrointestinal tract, the vitamins are liberated from binding proteins and for some of the vitamins modified prior to absorption. Due to their solubility in water, they all require specific carriers to be absorbed. Our current knowledge concerning each of the vitamins differs in depth and focus and is influenced by the prevalence of conditions and diseases related to lack of the individual vitamin. Because of that we have chosen to cover slightly different aspects for the individual vitamins. For each of the vitamins, we summarize the physiological role, the steps involved in the absorption, and the factors influencing the absorption. In addition, for some of the vitamins, the molecular base for absorption is described in details, while for others new aspects of relevance for human deficiency are included. © 2018 American Physiological Society. Compr Physiol 8:1291-1311, 2018.
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Affiliation(s)
- Hamid M Said
- University of California-School of Medicine, Irvine, California, USA.,VA Medical Center, Long Beach, California, USA
| | - Ebba Nexo
- Department of Clinical Medicine, Clinical Biochemistry, Aarhus University Hospital, Aarhus, Denmark
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44
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Battaglia-Hsu SF, Ghemrawi R, Coelho D, Dreumont N, Mosca P, Hergalant S, Gauchotte G, Sequeira JM, Ndiongue M, Houlgatte R, Alberto JM, Umoret R, Robert A, Paoli J, Jung M, Quadros EV, Guéant JL. Inherited disorders of cobalamin metabolism disrupt nucleocytoplasmic transport of mRNA through impaired methylation/phosphorylation of ELAVL1/HuR. Nucleic Acids Res 2018; 46:7844-7857. [PMID: 30016500 PMCID: PMC6125644 DOI: 10.1093/nar/gky634] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 06/26/2018] [Accepted: 07/12/2018] [Indexed: 12/12/2022] Open
Abstract
The molecular mechanisms that underlie the neurological manifestations of patients with inherited diseases of vitamin B12 (cobalamin) metabolism remain to date obscure. We observed transcriptomic changes of genes involved in RNA metabolism and endoplasmic reticulum stress in a neuronal cell model with impaired cobalamin metabolism. These changes were related to the subcellular mislocalization of several RNA binding proteins, including the ELAVL1/HuR protein implicated in neuronal stress, in this cell model and in patient fibroblasts with inborn errors of cobalamin metabolism and Cd320 knockout mice. The decreased interaction of ELAVL1/HuR with the CRM1/exportin protein of the nuclear pore complex and its subsequent mislocalization resulted from hypomethylation at R-217 produced by decreased S-adenosylmethionine and protein methyl transferase CARM1 and dephosphorylation at S221 by increased protein phosphatase PP2A. The mislocalization of ELAVL1/HuR triggered the decreased expression of SIRT1 deacetylase and genes involved in brain development, neuroplasticity, myelin formation, and brain aging. The mislocalization was reversible upon treatment with siPpp2ca, cobalamin, S-adenosylmethionine, or PP2A inhibitor okadaic acid. In conclusion, our data highlight the key role of the disruption of ELAVL1/HuR nuclear export, with genomic changes consistent with the effects of inborn errors of Cbl metabolisms on brain development, neuroplasticity and myelin formation.
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Affiliation(s)
- Shyue-Fang Battaglia-Hsu
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Rose Ghemrawi
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - David Coelho
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Natacha Dreumont
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Pauline Mosca
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Sébastien Hergalant
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Guillaume Gauchotte
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Jeffrey M Sequeira
- Division of Hematology/Oncology, Department of Medicine, SUNY-Downstate Medical Center, Brooklyn, New York, NY, USA
| | - Mariam Ndiongue
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Rémi Houlgatte
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Jean-Marc Alberto
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Remy Umoret
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Aurélie Robert
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Justine Paoli
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
| | - Martin Jung
- Department of Medical Biochemistry and Molecular Biology, Saarland University, Building 44, Homburg 66421, Germany
| | - Edward V Quadros
- Division of Hematology/Oncology, Department of Medicine, SUNY-Downstate Medical Center, Brooklyn, New York, NY, USA
| | - Jean-Louis Guéant
- INSERM UMRS 954 NGERE – Nutrition, Genetics, and Environmental Risk Exposure and National Center of Inborn Errors of Metabolism, Faculty of Medicine of Nancy, University of Lorraine and University Regional Hospital Center of Nancy, Vandoeuvre-lès-Nancy, F-54000, France
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45
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Expression of TCN1 in Blood is Negatively Associated with Verbal Declarative Memory Performance. Sci Rep 2018; 8:12654. [PMID: 30139959 PMCID: PMC6107676 DOI: 10.1038/s41598-018-30898-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/01/2018] [Indexed: 12/29/2022] Open
Abstract
Memory is indispensable for normal cognitive functioning, and the ability to store and retrieve information is central to mental health and disease. The molecular mechanisms underlying complex memory functions are largely unknown, but multiple genome-wide association studies suggest that gene regulation may play a role in memory dysfunction. We performed a global gene expression analysis using a large and balanced case-control sample (n = 754) consisting of healthy controls and schizophrenia and bipolar disorder patients. Our aim was to discover genes that are differentially expressed in relation to memory performance. Gene expression in blood was measured using Illumina HumanHT-12 v4 Expression BeadChip and memory performance was assessed with the updated California Verbal Learning Test (CVLT-II). We found that elevated expression of the vitamin B12-related gene TCN1 (haptocorrin) was significantly associated with poorer memory performance after correcting for multiple testing (β = −1.50, p = 3.75e-08). This finding was validated by quantitative real-time PCR and followed up with additional analyses adjusting for confounding variables. We also attempted to replicate the finding in an independent case-control sample (n = 578). The relationship between TCN1 expression and memory impairment was comparable to that of important determinants of memory function such as age and sex, suggesting that TCN1 could be a clinically relevant marker of memory performance. Thus, we identify TCN1 as a novel genetic finding associated with poor memory function. This finding may have important implications for the diagnosis and treatment of vitamin B12-related conditions.
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46
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A multicolor riboswitch-based platform for imaging of RNA in live mammalian cells. Nat Chem Biol 2018; 14:964-971. [PMID: 30061719 PMCID: PMC6143402 DOI: 10.1038/s41589-018-0103-7] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 06/13/2018] [Indexed: 11/29/2022]
Abstract
RNAs directly regulate a vast array of cellular processes, emphasizing the need for robust approaches to fluorescently label and track RNAs in living cells. Here, we develop an RNA imaging platform using the cobalamin riboswitch as an RNA tag and a series of probes containing cobalamin as a fluorescence quencher. This highly modular ‘Riboglow’ platform leverages different colored fluorescent dyes, linkers and riboswitch RNA tags to elicit fluorescent turn-on upon binding RNA. We demonstrate the ability of two different Riboglow probes to track mRNA and small non-coding RNA in live mammalian cells. A side-by-side comparison revealed that Riboglow outperformed the dye binding aptamer Broccoli and performed on par with the gold standard RNA imaging system, the MS2-fluorescent protein system, while featuring a much smaller RNA tag. Together, the versatility of the Riboglow platform and ability to track diverse RNAs suggest broad applicability for a variety of imaging approaches.
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47
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Abstract
PURPOSE To image the uptake of cobalamin (Cbl) within malignant breast tumors in vivo. PROCEDURES Prior to surgery 20 female patients with clinically suspected breast tumors were intravenously administered 0.25 μg of an In-111 labeled 5-deoxyadenosylcobalamin (AC) analog ([111In]AC) and sequentially imaged with whole-body planar (WBP) and single-photon emission computed tomography (SPECT) between 2-5 h and 20-24 h post-injection (P.I.). The tumor to background (T/B) ratio for [111In]AC in breast tumors at 2-5 h was correlated to its expression of estrogen (ER), progesterone (PR), and human epidermal growth factor 2 (HER2) receptors. Subsequent pulse chase (PC) experiments in nude mice burdened with the MDA-MB-231 triple-negative (TN) breast tumor xenograft measured the effect that pulses of AC or dexamethasone (DEX) had on [111In]AC uptake in both normal murine tissue and the TN breast tumor. RESULTS The mean [111In]AC T/B ratio of the patients' 18 resected tumors was 5.8. Comparing ER- and PR-positive tumors (n = 11) to TN and HER2-positive tumors (n = 7), the mean [111In]AC T/B ratios at 2-5 h P.I. were 3.2 (range 1.8-5.6) and 10.4 (range 3.3-22.5), respectively. Pulses of 2.0 μg of AC at 2, 8, or 24 h; or 40.0 μg of DEX at 24 h prior to injecting 0.5 μg of [111In]AC, increased mean tracer uptake in the MDA-MB-231 tumors by 26.4, 71.5, 92.6, and 49.1 %, respectively. Only the 2- and 24-h PC intervals concomitantly suppressed [111In]AC uptake in normal murine tissue while enhancing [111In]AC uptake in MDA-MB-231 tumors. CONCLUSION The uptake of Cbl within malignant breast tumors can be imaged clinically. Cbl uptake is greatest in TN and HER2-positive breast tumors. A solitary bolus of AC or DEX increases the [111In]AC uptake within a breast tumor in vivo. Investigating the cytogenetic mechanisms controlling the endocytosis of Cbl in malignant breast tumors is warranted.
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48
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Chatelle C, Ochoa-Fernandez R, Engesser R, Schneider N, Beyer HM, Jones AR, Timmer J, Zurbriggen MD, Weber W. A Green-Light-Responsive System for the Control of Transgene Expression in Mammalian and Plant Cells. ACS Synth Biol 2018; 7:1349-1358. [PMID: 29634242 DOI: 10.1021/acssynbio.7b00450] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The ever-increasing complexity of synthetic gene networks and applications of synthetic biology requires precise and orthogonal gene expression systems. Of particular interest are systems responsive to light as they enable the control of gene expression dynamics with unprecedented resolution in space and time. While broadly used in mammalian backgrounds, however, optogenetic approaches in plant cells are still limited due to interference of the activating light with endogenous photoreceptors. Here, we describe the development of the first synthetic light-responsive system for the targeted control of gene expression in mammalian and plant cells that responds to the green range of the light spectrum in which plant photoreceptors have minimal activity. We first engineered a system based on the light-sensitive bacterial transcription factor CarH and its cognate DNA operator sequence CarO from Thermus thermophilus to control gene expression in mammalian cells. The system was functional in various mammalian cell lines, showing high induction (up to 350-fold) along with low leakiness, as well as high reversibility. We quantitatively described the systems characteristics by the development and experimental validation of a mathematical model. Finally, we transferred the system into A. thaliana protoplasts and demonstrated gene repression in response to green light. We expect that this system will provide new opportunities in applications based on synthetic gene networks and will open up perspectives for optogenetic studies in mammalian and plant cells.
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Affiliation(s)
| | | | | | | | | | - Alex R. Jones
- National Physical Laboratory, Teddington, Middlesex TW11 0LW, U.K
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49
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Kuda-Wedagedara AW, Workinger JL, Nexo E, Doyle RP, Viola-Villegas N. 89Zr-Cobalamin PET Tracer: Synthesis, Cellular Uptake, and Use for Tumor Imaging. ACS OMEGA 2017; 2:6314-6320. [PMID: 29104950 PMCID: PMC5664145 DOI: 10.1021/acsomega.7b01180] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 09/18/2017] [Indexed: 06/07/2023]
Abstract
Vitamin B12, or cobalamin (Cbl), is an essential nutrient. Acquisition, transport, and cellular internalization of Cbl are dependent on specific binding proteins and associated receptors. The circulating transport protein transcobalamin (TC) promotes cellular uptake via binding to specific receptors such as CD320, a receptor upregulated in several cancer cell lines. In this study, we report the successful synthesis of 89Zirconium-labeled Cbl that was derivatized with desferrioxamine (89Zr-Cbl). We document the purity of the tracer and its binding to TC compared with that of unmodified cyano-Cbl (CN-Cbl). In vitro studies employing the CD320 receptor-positive breast cancer cell line MDA-MB-453 showed a 6- to 10-fold greater uptake of 89Zr-Cbl when compared with the uptake in the presence of 200-fold excess of CN-Cbl at 37 °C. We used nude mice with MDA-MB-453 tumors to study the feasibility of employing the tracer to visualize CD320 positive tumors. In vivo positron emission tomography images displayed a clear visualization of the tumor with 1.42 ± 0.48 %ID/g uptake (n = 3) at 4 h after injection (p.i.) with the tracer retained at 48 h p.i. Ex vivo biodistribution studies using 89Zr-Cbl exhibited the highest uptake in kidney and liver at 48 h p.i. Results document the feasibility of synthesizing a Cbl-based tracer suitable for both in vivo and ex vivo studies of Cbl trafficking and with the potential to visualize tumors expressing TC receptors, such as CD320.
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Affiliation(s)
- Akhila
N. W. Kuda-Wedagedara
- Department
of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, Michigan 48202, United States
| | - Jayme L. Workinger
- Department
of Chemistry, Syracuse University, 111 College Place, Syracuse, New York 13102, United States
| | - Ebba Nexo
- Department
of Clinical Biochemistry and Institute of Clinical Medicine, Aarhus University Hospital, Aarhus 8000, Denmark
| | - Robert P. Doyle
- Department
of Chemistry, Syracuse University, 111 College Place, Syracuse, New York 13102, United States
- Department
of Medicine, State University of New York
Upstate Medical University, Syracuse, New York 13102, United States
| | - Nerissa Viola-Villegas
- Department
of Oncology, Karmanos Cancer Institute, Wayne State University, Detroit, Michigan 48202, United States
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50
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Alaterre E, Raimbault S, Goldschmidt H, Bouhya S, Requirand G, Robert N, Boireau S, Seckinger A, Hose D, Klein B, Moreaux J. CD24, CD27, CD36 and CD302 gene expression for outcome prediction in patients with multiple myeloma. Oncotarget 2017; 8:98931-98944. [PMID: 29228738 PMCID: PMC5716778 DOI: 10.18632/oncotarget.22131] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 08/27/2017] [Indexed: 12/13/2022] Open
Abstract
Multiple myeloma (MM) is a B cell neoplasia characterized by clonal plasma cell (PC) proliferation. Minimal residual disease monitoring by multi-parameter flow cytometry is a powerful tool for predicting treatment efficacy and MM outcome. In this study, we compared CD antigens expression between normal and malignant plasma cells to identify new potential markers to discriminate normal from malignant plasma cells, new potential therapeutic targets for monoclonal-based treatments and new prognostic factors. Nine genes were significantly overexpressed and 16 were significantly downregulated in MMC compared with BMPC (ratio ≥2; FDR CD24, CD27, CD36 and CD302) was associated with a prognostic value in two independent cohorts of patients with MM (HM cohort and TT2 cohort, n=345). The expression level of these four genes was then used to develop a CD gene risk score that classified patients in two groups with different survival (P = 2.06E-6) in the HM training cohort. The prognostic value of the CD gene risk score was validated in two independent cohorts of patients with MM (TT2 cohort and HOVON65/GMMGHD4 cohort, n=282 patients). The CD gene risk score remained a prognostic factor that separated patients in two groups with significantly different overall survival also when using publicly available data from a cohort of relapsing patients treated with bortezomib (n=188). In conclusion, the CD gene risk score allows identifying high risk patients with MM based on CD24, CD27, CD36 and CD302 expression and could represent a powerful tool for simple outcome prediction in MM.
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Affiliation(s)
- Elina Alaterre
- HORIBA Medical, Parc Euromédecine, Montpellier, France.,Institute of Human Genetics, CNRS-UM UMR9002, Montpellier, France
| | | | - Hartmut Goldschmidt
- Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg, Heidelberg, Germany.,Nationales Centrum für Tumorerkrankungen, Heidelberg, Germany
| | - Salahedine Bouhya
- CHU Montpellier, Department of Clinical Hematology, Montpellier, France
| | - Guilhem Requirand
- Department of Biological Haematology, CHU Montpellier, Montpellier, France.,Institute of Human Genetics, CNRS-UM UMR9002, Montpellier, France
| | - Nicolas Robert
- Department of Biological Haematology, CHU Montpellier, Montpellier, France.,Institute of Human Genetics, CNRS-UM UMR9002, Montpellier, France
| | - Stéphanie Boireau
- Department of Biological Haematology, CHU Montpellier, Montpellier, France.,Institute of Human Genetics, CNRS-UM UMR9002, Montpellier, France
| | - Anja Seckinger
- Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg, Heidelberg, Germany.,Nationales Centrum für Tumorerkrankungen, Heidelberg, Germany
| | - Dirk Hose
- Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg, Heidelberg, Germany.,Nationales Centrum für Tumorerkrankungen, Heidelberg, Germany
| | - Bernard Klein
- Department of Biological Haematology, CHU Montpellier, Montpellier, France.,Institute of Human Genetics, CNRS-UM UMR9002, Montpellier, France.,University of Montpellier, UFR Medecine, Montpellier, France
| | - Jérôme Moreaux
- Department of Biological Haematology, CHU Montpellier, Montpellier, France.,Institute of Human Genetics, CNRS-UM UMR9002, Montpellier, France.,University of Montpellier, UFR Medecine, Montpellier, France
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