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Pan HH, Ruan DD, Wu M, Chen T, Lu T, Gan YM, Wang C, Liao LS, Lin XF, Chen X, Zhu YB, Fang ZT, Yu QH, Yang GK, Ye LF, Luo JW. Clinical phenotype and genetic function analysis of a rare family with hereditary leiomyomatosis and renal cell carcinoma complicated with Birt-Hogg-Dubé syndrome. J Med Genet 2023; 60:1210-1214. [PMID: 37468236 DOI: 10.1136/jmg-2023-109328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/11/2023] [Indexed: 07/21/2023]
Abstract
To date, over 200 families with hereditary leiomyomatosis and renal cell carcinoma (HLRCC) and over 600 families with Birt-Hogg-Dubé (BHD) syndrome have been reported, with low incidence. Here, we describe a patient with suspected rare HLRCC complicated by BHD syndrome. The proband (II1) had characteristic cutaneous leiomyoma-like protrusions on the neck and back, a left renal mass and multiple right renal, liver and bilateral lung cysts. Three family members (I1, II2, II3) had a history of renal cancer and several of the aforementioned clinical features. Two family members (II1, II3) diagnosed with fumarate hydratase (FH)-deficient papillary RCC via pathological biopsy carried two heterozygous variants: FH (NM_000143.3) missense mutation c.1189G>A (p.Gly397Arg) and FLCN (NM_144997.5) frameshift mutation c.1579_1580insA (p.Arg527Glnfs*75). No family member carrying a single variant had renal tumours. In HEK293T cells transfected with mutant vectors, mRNA and protein expression after FLCN p.Arg527Glnfs*75 and FH p.Gly397Arg mutations were significantly lower than those in wild-type (WT) cells. Cell immunofluorescence showed altered protein localisation and reduced protein expression after FLCN p.Arg527Glnfs*75 mutation. The FH WT was uniformly distributed in the cytoplasm, whereas FH protein expression was reduced after the p.Gly397Arg mutation and scattered sporadically with altered cell localisation. Patients with two variants may have a significantly increased penetrance of RCC.
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Affiliation(s)
- Hong-Hong Pan
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
- Department of Urology, Fujian Provincial Hospital, Fuzhou, Fujian, China
| | - Dan-Dan Ruan
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
| | - Min Wu
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
| | - Ting Chen
- School of Medicine, Shanghai University, Shanghai, China
| | - Tao Lu
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
| | - Yu-Mian Gan
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
| | - Chen Wang
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
- Pathology Department, Fujian Provincial Hospital, Fuzhou, Fujian, China
| | - Li-Sheng Liao
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
- Department of Hematology, Fujian Provincial Hospital, Fuzhou, Fujian, China
| | - Xin-Fu Lin
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
- Pediatrics Department, Fujian Provincial Hospital, Fuzhou, Fujian, China
| | - Xin Chen
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
- Pathology Department, Fujian Provincial Hospital, Fuzhou, Fujian, China
| | - Yao-Bin Zhu
- Department of Traditional Chinese Medicine, the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China
| | - Zhu-Ting Fang
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
| | - Qing-Hua Yu
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
| | - Guo-Kai Yang
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
- Nephrology Department, Fujian Provincial Hospital, Fuzhou, Fujian, China
| | - Lie-Fu Ye
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
- Department of Urology, Fujian Provincial Hospital, Fuzhou, Fujian, China
| | - Jie-Wei Luo
- Fujian Provincial Hospital, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, Fujian, China
- Department of Traditional Chinese Medicine, Fujian Provincial Hospital, Fuzhou, Fujian, China
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Wang RL, Ruan DD, Hu YN, Gan YM, Lin XF, Fang ZT, Liao LS, Tang FQ, He WB, Luo JW. Genetic Analysis and Functional Study of a Pedigree With Bruck Syndrome Caused by PLOD2 Variant. Front Pediatr 2022; 10:878172. [PMID: 35601416 PMCID: PMC9120662 DOI: 10.3389/fped.2022.878172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 03/29/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Bruck syndrome (BS) is a rare autosomal recessive inherited osteogenesis imperfecta disease characterized by increased bone fragility and joint contracture. The pathogenic gene of type I BS is FKBPl0, whereas that of type II BS is PLOD2. No significant difference has been found in the clinical phenotype between the two types of BS. In this study, we performed genetic analysis of a BS pedigree caused by PLOD2 variant and studied the corresponding cellular function. METHODS Serum biochemistry, parathyroid hormone (PTH), 25-hydroxyvitamin D [25-(OH) D], osteocalcin, and 24-h urinary calcium levels of a family member with BS was assessed. The genes of the proband were analyzed by second-generation sequencing and exon capture techniques. Sanger sequencing was also performed for the suspected responsible variant of the family member. Wild- and variant-type lentivirus plasmids were constructed by gene cloning and transfected into HEK293T cells. Cell function was verified by real-time quantitative polymerase chain reaction, western blotting, and immunofluorescence detection. RESULTS In this pedigree, the proband was found to have a homozygous variant c.1856G > A (p.Arg619His) in exon 17 of PLOD2 (NM_182943.3). His consanguineous parents and sisters were p.Arg619His heterozygous carriers. The mRNA expression of PLOD2 in the constructed p.Arg619His variant cells was significantly upregulated, while the expression of PLOD2 and collagen I protein in the cell lysate was significantly downregulated. Immunofluorescence revealed that the wild-type PLOD2 was mainly located in the cytoplasm, and the expression of the PLOD2 protein after c.1856G > A variant was significantly downregulated, with almost no expression, aligning with the western blot results. The serum sodium, potassium, calcium, phosphorus, magnesium, alkaline phosphatase, PTH, 25-(OH) D, osteocalcin, and 24 h urinary calcium levels of the proband, his parents, and sisters were normal. CONCLUSION Through gene and cell function analyses, PLOD2 Arg619His missense variant was preliminarily confirmed to cause BS by reducing protein expression.
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Affiliation(s)
- Ruo-Li Wang
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China.,Department of Emergency, Fujian Provincial Hospital, Fuzhou, China.,Fujian Trauma Medical Center, Fuzhou, China
| | - Dan-Dan Ruan
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Ya-Nan Hu
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Yu-Mian Gan
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China
| | - Xin-Fu Lin
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China.,Department of Pediatrics, Fujian Provincial Hospital, Fuzhou, China
| | - Zhu-Ting Fang
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China.,Department of Intervention, Fujian Provincial Hospital, Fuzhou, China
| | - Li-Sheng Liao
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China.,Department of Hematology, Fujian Provincial Hospital, Fuzhou, China
| | - Fa-Qiang Tang
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China.,Department of Orthopedics, Fujian Provincial Hospital, Fuzhou, China
| | - Wu-Bing He
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China.,Department of Emergency, Fujian Provincial Hospital, Fuzhou, China.,Fujian Trauma Medical Center, Fuzhou, China
| | - Jie-Wei Luo
- Shengli Clinical Medical College, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China.,Department of Traditional Chinese Medicine, Fujian Provincial Hospital, Fuzhou, China
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Hu YN, Gan YM, Zhang YP, Ruan DD, Zhu YB, Lin XF, Fang ZT, Liao LS, Tang FQ, Luo JW. A novel compound heterozygous variant linked to hematuria in a family with hereditary factor VII deficiency. J Gene Med 2021; 24:e3398. [PMID: 34786791 DOI: 10.1002/jgm.3398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 09/06/2021] [Accepted: 09/28/2021] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Hereditary Factor VII Deficiency (FVIID) is a rare congenital autosomal recessive bleeding disorder. In clinical manifestations, its onset is caused by variant of the F7 gene (NM_019616) with strong heterogeneity. We identified a family with hematuria caused by a novel F7 compound heterozygous variant and studied the FVIID-dependent mechanism impacted by these variants. METHODS Coagulation factors in the proband were functionally verified. We located pathogenic variants in relevant genes using next-generation sequencing after target enrichment and verified them by Sanger sequencing. We examined the coagulation activity and secretion pattern of recombinant FVII variants expressed in cells and observed their location and stability by immunofluorescence. RESULTS We found a missense variant c.1207G>A (p.Gly403Ser) and a frameshift variant c.154_155del (p.Arg53fs) in the F7 gene of the proband. FVII activity tests showed that the variants significantly decreased its presence in the cell culture supernatant. Moreover, the R53fs mutant lacked the FVII functional domain and had no detectable activity. Immunofluorescence indicated that the p.Gly403Ser variant was distributed to the cell membrane and cytoplasm, while the FVII R53fs variant was not detected. Deficient FVII protein function and severe coagulation disorder are the likely causes of hematuria and other bleeding symptoms in the proband. CONCLUSION The newly discovered F7 gene variants enrich the spectrum of hereditary FVII deficiency and provide a new foundation for the diagnosis and treatment of this type of coagulation disorder.
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Affiliation(s)
- Ya-Nan Hu
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
| | - Yu-Mian Gan
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
| | - Yan-Ping Zhang
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
| | - Dan-Dan Ruan
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
| | - Yao-Bin Zhu
- Department of Traditional Chinese Medicine, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Xin-Fu Lin
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
| | - Zhu-Ting Fang
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
| | - Li-Sheng Liao
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
| | - Fa-Qiang Tang
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
| | - Jie-Wei Luo
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China.,Fujian provincial hospital, Fuzhou, China
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Wu R, Ruan XL, Ruan DD, Zhang JH, Wang HL, Zeng QZ, Lu T, Gan YM, Luo JW, Wu JB. Differences in gut microbiota structure in patients with stages 4-5 chronic kidney disease. Am J Transl Res 2021; 13:10056-10074. [PMID: 34650681 PMCID: PMC8507064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
The gut microbiota can affect human metabolism, immunity, and other biologic pathways through the complex gut-kidney axis (GKA), and in turn participate in the occurrence and development of kidney disease. In this study, 39 patients with stage 4-5 chronic kidney disease (CKD) and 40 healthy individuals were recruited and 16S rDNA sequencing was performed to analyze the V3-V4 conserved regions of their microbiota. A total of 795 operational taxonomic units (OTUs) shared between groups or specific to each group were obtained, among which 255 OTUs with significant differences between the two groups were identified (P<0.05). Adonis differential analysis showed that the diversity of gut microbiota was highly correlated with CKD stages 4-5. Additionally, 61 genera with differences in the two groups were identified (P<0.05) and 111 species with significant differences in the phyla, classes, orders, families, and genera between the two groups were identified (P<0.05). The differential bacterial genera with the greatest contribution were, in descending order: c_Bacteroidia, o_Bacteroidales, p_Bacteroidetes, c_Clostridia, o_Clostridiales, etc. Those with the greatest contribution in stages 4-5 CKD were, in descending order: p_Proteobacteria, f_Enterobacteriaceae, o_Enterobacteriales, c_Gammaproteobacteria, c_Bacilli, etc. The results suggest that the diversity of the microbiota may affect the occurrence, development, and outcome of the terminal stages of CKD.
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Affiliation(s)
- Rong Wu
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fuqing City Hospital Affiliated to Fujian Medical UniversityFuzhou 350001, Fujian, China
| | - Xing-Lin Ruan
- Department of Neurology, Fujian Medical University Union HospitalFuzhou 350001, Fujian, China
- Fujian Key Laboratory of Molecular Neurology, Institute of Neuroscience, Fujian Medical UniversityFuzhou 350005, Fujian, China
| | - Dan-Dan Ruan
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fujian Provincial HospitalFuzhou 350001, Fujian, China
| | - Jian-Hui Zhang
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fujian Provincial HospitalFuzhou 350001, Fujian, China
| | - Han-Lu Wang
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fujian Provincial HospitalFuzhou 350001, Fujian, China
| | - Quan-Zuan Zeng
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fujian Provincial HospitalFuzhou 350001, Fujian, China
| | - Tao Lu
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fujian Provincial HospitalFuzhou 350001, Fujian, China
| | - Yu-Mian Gan
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fujian Provincial HospitalFuzhou 350001, Fujian, China
| | - Jie-Wei Luo
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fujian Provincial HospitalFuzhou 350001, Fujian, China
| | - Jia-Bin Wu
- Shengli Clinical Medical College, Fujian Medical UniversityFuzhou 350001, Fujian, China
- Department of Nephrology, Fujian Provincial HospitalFuzhou 350001, Fujian, China
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Ruan DD, Gan YM, Lu T, Yang X, Zhu YB, Yu QH, Liao LS, Lin N, Qian X, Luo JW, Tang FQ. Genetic diagnosis history and osteoarticular phenotype of a non-transfusion secondary hemochromatosis. World J Clin Cases 2020; 8:5962-5975. [PMID: 33344595 PMCID: PMC7723718 DOI: 10.12998/wjcc.v8.i23.5962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/23/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND It is not easy to identify the cause of various iron overload diseases because the phenotypes overlap. Therefore, it is important to perform genetic testing to determine the genetic background of patients.
AIM To investigate the genetic background of a patient with hemochromatosis complicated by psoriasis on both lower extremities.
METHODS Ten years ago, a 61-year-old male presented with iron overload, jaundice, hemolytic anemia and microcytic hypochromic anemia. Computed tomography of the left knee joint showed enlargement of the tibial medullary cavity and thinned bone cortices. Magnetic resonance imaging showed hepatic hemochromatosis, extensive abnormal signals from bone marrow cavities and nodular lesions in the lateral medullary cavity of the upper left lateral tibia. Single photon emission computed tomography showed radial dots of abnormal concentration in the upper end of the left tibia and radial symmetry of abnormal concentrations in joints of the extremities. The patient showed several hot spot mutations of the HFE and G6PD genes detected by next-generation sequencing, but no responsible gene mutation was found. The thalassemia gene was detected by gap-PCR.
RESULTS The patient was found to carry the -α4.2 and --SEA deletion mutations of the globin gene. These two mutations are common causes of Southeast Asian α-thalassemia, but rarely cause severe widespread non-transfusion secondary hemochromatosis osteoarthropathy. The simultaneous presence of an auxiliary superposition effect of a rare missense mutation of the PIEZO1 gene (NM_001142864, c.C4748T, p.A1583V) was considered. Moreover, several rare mutations of the IFIH1, KRT8, POFUT1, FLG, KRT2, and TGM5 genes may be involved in the pathogenesis of psoriasis.
CONCLUSION The selection of genetic detection methods for hemochromatosis still needs to be based on an in-depth study of the clinical manifestations of the disease.
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Affiliation(s)
- Dan-Dan Ruan
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
| | - Yu-Mian Gan
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
| | - Tao Lu
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
| | - Xiao Yang
- Department of Management, Fujian Health College, Fuzhou 350101, Fujian Province, China
| | - Yao-Bin Zhu
- Department of Traditional Chinese Medicine, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, Fujian Province, China
| | - Qing-Hua Yu
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
| | - Li-Sheng Liao
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
| | - Ning Lin
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
| | - Xin Qian
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
| | - Jie-Wei Luo
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
| | - Fa-Qiang Tang
- Shengli Clinical Medical College, Fujian Medical University, Fuzhou 350001, Fujian Province, China
- Department of Orthopedics, Fujian Provincial Hospital, Fuzhou 350001, Fujian Province, China
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Ruan DD, Gan YM, Lu T, Yang X, Zhu YB, Yu QH, Liao LS, Lin N, Qian X, Luo JW, Tang FQ. Genetic diagnosis history and osteoarticular phenotype of a non-transfusion secondary hemochromatosis. World J Clin Cases 2020. [DOI: 10.12998/wjcc.v8.i23.5959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Chang D, Yang FY, Yan JJ, Wu YQ, Bai SQ, Liang XZ, Zhang YW, Gan YM. SRAP analysis of genetic diversity of nine native populations of wild sugarcane, Saccharum spontaneum, from Sichuan, China. Genet Mol Res 2012; 11:1245-53. [PMID: 22614352 DOI: 10.4238/2012.may.9.3] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Saccharum spontaneum is a wild sugarcane species that is native to and widely distributed in China. It has been extensively used in sugarcane breeding programs, and is being tested for the development of bioenergy cultivars. In order to provide basic information for the exploitation of this species, we analyzed genetic variation among and within native S. spontaneum populations collected from Sichuan, China. Eighty plants from nine native populations were sampled. Twenty-one sequence-related amplified polymorphism primer pairs generated 235 clearly scorable bands, of which 185 were polymorphic (78.7%). Nei's genetic diversity was 0.2801 and Shannon's information index was 0.4155 across the populations. Genetic diversity parameters, G(ST) value (0.2088) and N(m) value (1.8944), showed that the genetic variation within populations was greater than that among populations. In the cluster analysis, one major grouping was formed by populations from Ya'an and another one by populations from Sichuan basin; a population from Baoxing formed a single cluster. In order to fully comprehend the genetic diversity of cold-tolerant local germplasm in this species, germplasm should be collected from the heterogeneous environments along the northern regions of this species' distribution. The germplasm that we collected should be a valuable resource for Saccharum breeding.
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Affiliation(s)
- D Chang
- Sichuan Academy of Grassland Sciences, Chengdu, Sichuan, China
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Lytle CA, Fuller ME, Gan YM, Peacock A, DeFlaun MF, Onstott TC, White DC. Utility of high performance liquid chromatography/electrospray/mass spectrometry of polar lipids in specifically Per-13C labeled Gram-negative bacteria DA001 as a tracer for acceleration of bioremediation in the subsurface. J Microbiol Methods 2001; 44:271-81. [PMID: 11240050 DOI: 10.1016/s0167-7012(00)00245-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Specific fatty acids from phosphatidylglycerol (PG) and phosphatidylethanolamine (PE) recovered from a per 13C-labeled bacteria can be detected in environmental samples and used as measures of bacterial transport in the subsurface. Detection of palmitic acid (16:0) and oleic acid (18:1) at m/z 271 (255+16) and 299 (281+18) as negative ions in PG and PE separated by high performance liquid chromatography (HPLC) and detected after up-front collisionally induced dissociation (CID) utilizing electrospray (ES) mass spectrometry (MS) provided sufficient sensitivity and specificity for detection in the presence of the indigenous microbiota. Application of tandem mass spectrometry (MS/MS) in the multiple reaction monitoring (MRM) was use to monitor selected transitions. MRM can increase the sensitivity so that polar lipids recovered from cell densities currently at about 10(4) cells/sample can be detected. This technology provides a non-intrusive mechanism for monitoring the distribution of bacteria added to accelerate in situ bioremediation of subsurface sediments.
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Affiliation(s)
- C A Lytle
- Center for Environmental Biotechnology, University of Tennessee, Knoxville, TN 37932-2575, USA
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