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Jiang A, Cui H, Zhang L, Cao C, Dai H, Lu C, Ge C, Lu H, Wu ZG. Functionalization of the Octahydro-Binaphthol Skeleton: A Universal Strategy for Directly Constructing D-A Type Axially Chiral Biphenyl Luminescent Molecules. J Org Chem 2024; 89:3605-3611. [PMID: 38364322 DOI: 10.1021/acs.joc.3c02600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2024]
Abstract
D-A type axially chiral biphenyl luminescent molecules are directly constructed through ingenious functionalization of the octahydro-binaphthol skeleton without optical resolution. The circularly polarized organic light-emitting diodes based on them display remarkable circularly polarized electroluminescence emission, a high luminance of >10 000 cd m-2, a maximum external quantum efficiency of 6.6%, and an extremely low-efficiency roll-off. This work provides a universal strategy for developing efficient and diverse axially chiral biphenyl emitters.
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Affiliation(s)
- Aiwei Jiang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Huihui Cui
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Li Zhang
- Nantong Cellulose Fibers Company, Ltd., Nantong, Jiangsu 226007, P. R. China
| | - Chenhui Cao
- Anhui Sholon New Material Technology Company, Ltd., Chuzhou, Anhui 239500, P. R. China
| | - Hong Dai
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Chaowu Lu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Cunwang Ge
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Hongbin Lu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Zheng-Guang Wu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
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Jiang A, Perry T, Walker K, Burfoot A, Patterson L. Surgical sensation during caesarean section: a qualitative analysis. Int J Obstet Anesth 2024; 57:103935. [PMID: 37925355 DOI: 10.1016/j.ijoa.2023.103935] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 08/13/2023] [Accepted: 10/02/2023] [Indexed: 11/06/2023]
Abstract
BACKGROUND Caesarean section (CS) is a major abdominal surgery performed usually on a young and healthy population under neuraxial anesthesia with little to no sedation. This creates a distinct surgical experience whereby patients are aware of the surgical process, physical sensations, and their environment. This study aimed to provide an in-depth descriptive assessment of subjective surgical experience during CS under regional anaesthesia. We expected the information gained would enhance our current understanding and better alleviate patient anxiety through informed counselling. METHODS This qualitative descriptive study was conducted at a Canadian academic centre. Twenty patients participated in semi-structured interviews within a week of CS, using an interview guide developed for this study. Patient medical records were reviewed to collect demographic and surgical information. Thematic analysis was conducted using an inductive approach to determine common themes. RESULTS Nine themes were identified. Five themes were identified in the category of surgical sensation and four themes were identified in the category of peri-operative education. CONCLUSIONS Patients commonly experienced pressure and movement sensations at varying intensity, and most did not experience pain. Environmental factors, including sounds and distraction by the newborn, affected perception of surgical sensation. Patients wish to receive pre-operative counselling regarding potential surgical sensations, as well as ongoing communication from their anaesthesiologist. These results can be used to guide informed discussions with patients and direct further investigation in this area.
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Affiliation(s)
- A Jiang
- Department of Anesthesiology and Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada.
| | - T Perry
- Department of Anesthesiology and Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - K Walker
- Department of Sociology, Queen's University, Kingston, Ontario, Canada
| | - A Burfoot
- Department of Sociology, Queen's University, Kingston, Ontario, Canada
| | - L Patterson
- Department of Anesthesiology and Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada
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3
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Zhang H, Zi Y, Cao C, Huang W, Jiang A, Lu C, He J, Tang Y, Wu ZG. Base Metal-Controlled Chemodivergent Cyclization of Propargylamines for the Atom-Economic Synthesis of Nitrogen Heterocycles. Org Lett 2023; 25:9030-9035. [PMID: 38019556 DOI: 10.1021/acs.orglett.3c03725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Herein, a base metal-enabled chemodivergent cyclization of propargylamines for the atom-economic construction of nitrogen heterocycles has been developed. Due to the different modes of activation of metal to propargylamine, copper-catalyzed 6-endo-dig cyclization generates functionalized 2-substitued quinoline-4-carboxylates, while iron-promoted cascade amino Claisen rearrangement, aromatization, and aza-Michael addition afford diverse 2-substituted indole-3-carboxylate derivatives. Excellent selectivity, broad functional group tolerance, mild conditions, and flexible late-stage functionalization illustrate the high efficiency and synthetic utility of this chemodivergent reaction.
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Affiliation(s)
- Hui Zhang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - You Zi
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Chenhui Cao
- Anhui Sholon New Material Technology Company, Ltd., Chuzhou, Anhui 239500, P. R. China
| | - Weichun Huang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Aiwei Jiang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Chaowu Lu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Jie He
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Yanfeng Tang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
| | - Zheng-Guang Wu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, P. R. China
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Wu ZG, Zhang H, Cao C, Lu C, Jiang A, He J, Zhao Q, Tang Y. Highly Selective Cyclization and Isomerization of Propargylamines to Access Functionalized Quinolines and 1-Azadienes. Molecules 2023; 28:6259. [PMID: 37687088 PMCID: PMC10488633 DOI: 10.3390/molecules28176259] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Developing new organic reactions with excellent atom economy and high selectivity is significant and urgent. Herein, by ingeniously regulating the reaction conditions, highly selective transformations of propargylamines have been successfully implemented. The palladium-catalyzed cyclization of propargylamines generates a series of functionalized quinoline heterocycles, while the base-promoted isomerization of propargylamines affords diverse 1-azadienes. Both reactions have good functional group tolerance, mild conditions, excellent atom economy and high yields of up to 93%. More importantly, these quinoline heterocycles and 1-azadienes could be flexibly transformed into valuable compounds, illustrating the validity and practicability of the propargylamine-based highly selective reactions.
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Affiliation(s)
- Zheng-Guang Wu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Hui Zhang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Chenhui Cao
- Anhui Sholon New Material Technology Co., Ltd., Chuzhou 239500, China
| | - Chaowu Lu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Aiwei Jiang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Jie He
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Qin Zhao
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Yanfeng Tang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
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Donington J, Hu X, Zhang S, Song Y, Gao C, Arunachalam A, Chirovsky D, Lerner A, Jiang A, Signorovitch J, Samkari A. 95P Neoadjuvant treatment pattern and association between real-world event-free survival (rwEFS) and overall survival (OS) in patients (pts) with resected early-stage non-small cell lung cancer (eNSCLC). J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00350-7] [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] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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Jiang A, Xu P, Yang Z, Zhao Z, Tan Q, Li W, Song C, Dai H, Leng H. Increased Sparc release from subchondral osteoblasts promotes articular chondrocyte degeneration under estrogen withdrawal. Osteoarthritis Cartilage 2023; 31:26-38. [PMID: 36241137 DOI: 10.1016/j.joca.2022.08.020] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/08/2022] [Accepted: 08/04/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The incidence of osteoarthritis (OA) in menopausal women is significantly higher than in same-aged men. Investigating the role of subchondral osteoblasts in estrogen deficiency-induced OA may help elucidate the pathological mechanism, providing new insights for the diagnosis and treatment of menopausal OA. METHODS A classical ovariectomy-induced OA (OVX-OA) rat model was utilized to isolate primary articular chondrocytes and subchondral osteoblasts, which were identified and then cocultured in Transwell. The expression of chondrocyte anabolic and catabolic indicators was evaluated. The differentially expressed proteins in the conditioned medium (CM) of osteoblasts were identified by Liquid Chromatograph-Mass Spectrometer (LC-MS/MS). Normal chondrocytes were treated with osteoblast CM, and then RNA sequencing was performed on the treated chondrocytes. KEGG was used to identify significant enrichment of signaling pathways, and Simple Western was used to verify the expression of related proteins in the signaling pathways. RESULTS Coculture of OVX-OA subchondral osteoblasts with chondrocytes significantly downregulated the expression of the anabolic indicators and upregulated the expression of the catabolic indicators in chondrocytes. 1,601 proteins were identified in both normal and OVX osteoblast culture supernatants. Protein-protein interaction network analysis revealed that Sparc was one of the hub proteins. The AMPK/Foxo3a signaling pathway of chondrocytes was downregulated by OVX-OA osteoblasts CM. AICAR, the AMPK agonist, partially reversed the catabolic effect of OVX-OA osteoblasts on chondrocytes. CONCLUSIONS Sparc secreted by OVX-OA subchondral osteoblasts can downregulate the AMPK/Foxo3a signaling pathway of chondrocytes, thereby promoting chondrocyte degeneration.
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Affiliation(s)
- A Jiang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Department of General Surgery, Beijing Pinggu Hospital, Beijing 101299, China
| | - P Xu
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Yang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Z Zhao
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Q Tan
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - W Li
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Engineering Research Center of Bone and Joint Precision Medicine, Beijing 100191, China
| | - C Song
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Beijing Key Lab of Spine Diseases, Beijing 100191, China
| | - H Dai
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing 100191, China
| | - H Leng
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China.
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Cicala C, Vimopatranon S, Goes L, Jiang A, Huang C, Huang D, Yolitz J, Wei D, Virtaneva K, Martens C, Soares M, Fauci A, Arthos J. PP 4.13 – 00151 Soluble Factors Drive Naïve CD4+ T Cells to Differentiate into CCR5 + Tissue Resident Memory Cells that are Highly Susceptible to HIV infection. J Virus Erad 2022. [DOI: 10.1016/j.jve.2022.100221] [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] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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8
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Gutkin P, Skinner L, Jiang A, Donaldson S, Loo B, Oh J, Von Eyben R, Bredfeldt J, Breneman J, Constine L, Faught A, Haas-Kogan D, Holmes J, Krasin M, Larkin C, Marcus K, Maxim P, Murphy B, Palmer J, Perkins S, Terezakis S, Bush K, Hiniker S. A 10-Center Prospective Clinical Trial of the Audio-Visual Assisted Therapeutic Ambience in Radiotherapy (AVATAR) System for Anesthesia Avoidance in Pediatric Patients. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.463] [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] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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9
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Hui C, Marquez C, Simiele E, Blomain E, Oh J, Bertaina A, Klein O, Shyr D, Jiang A, Hoppe R, Kovalchuk N, Hiniker S. Volumetric Modulated Arc Therapy Total Body Irradiation (VMAT-TBI) in Pediatric and Adolescent/Young Adult Patients Undergoing Stem Cell Transplantation: Early Outcomes and Toxicities. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.570] [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] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Robertson MB, Li A, Yuan Y, Jiang A, Gjerde H, Staples JA, Brubacher JR. Correlation between oral fluid and blood THC concentration: A systematic review and discussion of policy implications. Accid Anal Prev 2022; 173:106694. [PMID: 35640367 DOI: 10.1016/j.aap.2022.106694] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/25/2022] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
Cannabis is the second most commonly used impairing substance by drivers, after alcohol. As more countries legalize cannabis, there is concern that cannabis-impaired driving will increase. In many countries, police use roadside devices to test for oral fluid THC (the primary psychotropic component in cannabis) to identify drivers who used cannabis; including in countries with non-zero per se limits for THC in blood. This practice is questioned as previous research demonstrates a poor correlation between oral fluid and blood THC concentrations at the individual level. We conducted a meta-analysis to identify all research that compared oral fluid with blood THC levels. We obtained individual-level data from study authors and analyzed pooled individual-level data to calculate sensitivity and specificity of oral fluid THC (at various cut-off values) to detect blood THC above different concentration limits. Finally, we explored practical implications of using oral fluid THC in an enforcement context. Our review found THC concentrations measured in over 18,000 paired samples of oral fluid and blood. We found a good correlation between the presence of THC in oral fluid and presence of THC in blood (sensitivity = 71.2%, specificity = 97.7%). However oral fluid THC, at commonly used cut-off values, is less sensitive and less specific when used as a biomarker to detect people with blood THC concentrations above commonly used per se limits (such as 5 ng/mL). As such, there will be a large number of "false positive" tests if oral fluid THC testing were used as a biomarker for "illegal" THC concentrations in randomly selected drivers. We argue that the adverse implications of false positive oral fluid THC tests in this context outweigh the possible road safety benefits and we recommend against oral fluid THC screening in randomly selected drivers in countries with non-zero per se limits for blood THC. In contrast, oral fluid THC tests appear to be useful for investigating "high-risk" drivers who come to police attention because of evidence of impairment.
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Affiliation(s)
| | - A Li
- University of Ottawa, Canada
| | - Y Yuan
- University of British Columbia, Canada
| | - A Jiang
- University of British Columbia, Canada
| | - H Gjerde
- Oslo University Hospital, Norway
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11
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Gehmlich K, Jiang A, Wadmore K, Hooper C, Douglas G, Ehler E, Broadway-Stringer S, Kalisch-Smith J, Sparrow D, Gautel M, Davies B, Watkins H. Crucial functions of alpha-actinin 2 in the embryonic heart. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Foundation. Main funding source(s): Wellcome Trust; British Heart Foundation
Background/Introduction
Alpha-actinin is an integral protein of the Z-discs in heart and skeletal muscle cells, with important structural and signalling functions. Missense variants in alpha-actinin can cause inherited conditions, e.g. myopathies and cardiomyopathies. The underlying disease mechanisms are still unknown.
Purpose
In order to study the disease mechanisms of an alpha-actinin missense variant, which is known to cause Hypertrophic Cardiomyopathy in human patients, a mouse model was generated.
Methods
Mice carrying the alpha-actinin missense variant were generated by CRISPR-Cas9 genome editing. The heterozygous adult mice carrying the alpha-actinin variant were characterised by echocardiography and quantitative PCR. Hearts of homozygous embryos were analysed at E15.5 by high-resolution episcopic microscopy (HREM).
Results
Mice carrying a single copy of the missense variant were viable and had normal appearance. Adult heterozygous mice showed no signs of cardiomyopathy on echocardiography. However, mature male mice displayed molecular signs of cardiomyopathy, such as induction of the fetal gene programme at transcript level.
The attempt to generate adult mice homozygous for the variant failed: 9 breeding pairs produced 18 litters with 83 weaned pups, but no homozygous offspring. Embryonic lethality was confirmed and E15.5 was the latest stage homozygous pups were reliably found to be viable. At this timepoint, genotype distribution was within the expected Mendelian ratios.
HREM of the hearts at this stage revealed increased right ventricular chamber size and decreased left atrial size, when compared to wildtype littermates. Membranous ventricular septal defects were observed in 3 out of 8 homozygous hearts. Further these embryos displayed aortic stenosis and dysplasic leaflets of the pulmonary valve.
Conclusions
Heterozygous adult mice only displayed sub-clinical signs of disease. In contrast, the missense variant is embryonic lethal in the homozygous setting and leads to a range of morphological abnormalities in E15.5 hearts. Future work will identify how altered functions of alpha-actinin cause these changes.
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Affiliation(s)
- K Gehmlich
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - A Jiang
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - K Wadmore
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - C Hooper
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - G Douglas
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - E Ehler
- King's College London , London , United Kingdom of Great Britain & Northern Ireland
| | - S Broadway-Stringer
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - J Kalisch-Smith
- University of Oxford, Department of Physiology, Anatomy and Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - D Sparrow
- University of Oxford, Department of Physiology, Anatomy and Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - M Gautel
- King's College London , London , United Kingdom of Great Britain & Northern Ireland
| | - B Davies
- University of Oxford, Wellcome Centre for Human Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - H Watkins
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
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Zhang J, Long K, Wang J, Zhang J, Jin L, Tang Q, Li X, Ma J, Li M, Jiang A. Yak miR-2285o-3p attenuates hypoxia-induced apoptosis by targeting caspase-3. Anim Genet 2021; 53:49-57. [PMID: 34807998 PMCID: PMC9298924 DOI: 10.1111/age.13153] [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] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/14/2021] [Accepted: 10/19/2021] [Indexed: 12/01/2022]
Abstract
miRNAs are a class of hairpin‐derived RNAs, 21–24 nucleotides in length, which are involved in a range of biological processes. The bta‐miR‐2285 family has over 40 members spanning the entire bovine genome. We previously found that bta‐miR‐2285o‐3p was highly expressed in yak heart and lung when compared with cattle, which prompted us to investigate its potential function in high‐altitude adaptation of yaks. In this study, we detected wide‐spread high expression of bta‐miR‐2285o‐3p in yak tissues. Further experiments revealed that the protein tyrosine phosphatase receptor type M (PTPRM) gene was the host gene of bta‐miR‐2285o‐3p and that two linked SNPs in bta‐mir‐2285o precursor affected the biogenesis of mature miRNA (bta‐miR‐2285o‐3p). Functional analysis in vitro indicated that bta‐miR‐2285o‐3p attenuated hypoxia‐induced apoptosis by targeting very low‐density lipoprotein receptor (VLDLR), phosphatase and tensin homolog (PTEN) and caspase‐3. Expression level analysis in vivo revealed the high negative Pearson’s correlation between bta‐miR‐2285o‐3p and caspase3 in yak, highlighting the potential important roles of bta‐miR‐2285o‐3p in yak high‐altitude adaptation. Our study provides a typical model for deciphering the function of miRNAs in environmental adaptation.
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Affiliation(s)
- J Zhang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - K Long
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - J Wang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - J Zhang
- Chongqing Academy of Animal Science, Rongchang, Chongqing, 402460, China
| | - L Jin
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Q Tang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - X Li
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - J Ma
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - M Li
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - A Jiang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
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Mcgeorge S, Jiang A, Nattakorn D, Pattison D, Thomas P, Yaxley J, Roberts M. Intra-individual comparison of prostate specific membrane antigen and fluorodeoxyglucose positron emission tomography uptake patterns in men with prostate cancer. EUR UROL SUPPL 2021. [DOI: 10.1016/s2666-1683(21)02732-4] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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14
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Blomain E, Jiang A, Donaldson S, Agarwal R, Bertaina A, Shyr D, Shin D, Hoppe R, Hiniker S. Impact of Testicular Boost on Oncologic Outcomes and Late Effects in Pediatric Patients With Leukemia Receiving Fractionated Total Body Irradiation (TBI): A Single-Institution Experience. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.667] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Chahal M, Jiang A, Hayden A, Savage K, Villa D, Scott D, Gerrie A, Lo A, Chan M, Pickles T, Connors J, Sehn L, Freeman C. OUTCOMES AFTER INITIAL REFUSAL OF CURATIVE TREATMENT IN PATIENTS WITH HODGKIN LYMPHOMA IN BRITISH COLUMBIA. Hematol Oncol 2021. [DOI: 10.1002/hon.112_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- M. Chahal
- BC Cancer, Medical Oncology Vancouver Canada
| | - A. Jiang
- British Columbia Cancer Research Centre Biostatistics Vancouver Canada
| | - A. Hayden
- BC Cancer Medical Oncology Surrey Canada
| | - K. Savage
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - D. Villa
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - D. Scott
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - A. Gerrie
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - A. Lo
- BC Cancer Division of Radiation Oncology Vancouver Canada
| | - M. Chan
- BC Cancer Division of Radiation Oncology Vancouver Canada
| | - T. Pickles
- BC Cancer Division of Radiation Oncology Vancouver Canada
| | - J. Connors
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - L. Sehn
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - C. Freeman
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
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Villa D, Jiang A, Crosbie N, Rule S, McCulloch R, Visco C, Buege MJ, Kumar A, Bond D, Paludo J, Maurer MJ, Thanarajasingam G, Baech J, El‐Galaly T, Kugathasan L, Gerrie AS, Lewis D. TIME TO SECOND LINE BRUTON TYROSINE KINASE THERAPY AND AGE AT ITS INITIATION ARE STRONGLY ASSOCIATED WITH SUBSEQUENT OVERALL SURVIVAL IN PATIENTS WITH FIRST RELAPSE OF MANTLE CELL LYMPHOMA. Hematol Oncol 2021. [DOI: 10.1002/hon.59_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- D. Villa
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - A. Jiang
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - N. Crosbie
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - S. Rule
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - R. McCulloch
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - C. Visco
- University of Verona Hematology Verona Italy
| | - M. J. Buege
- Memorial Sloan Kettering Cancer Center Clinical Pharmacy, Lymphoma New York USA
| | - A. Kumar
- Memorial Sloan Kettering Cancer Center Division of Hematologic Malignancies New York USA
| | - D. Bond
- The Ohio State University Hematology Columbus USA
| | - J. Paludo
- Mayo Clinic Hematology Rochester USA
| | - M. J. Maurer
- Mayo Clinic Division of Clinical Trials and Biostatistics Rochester USA
| | | | - J. Baech
- Aalborg University Hospital Haematology Aalborg Denmark
| | - T. El‐Galaly
- Aalborg University Hospital Haematology Aalborg Denmark
| | - L. Kugathasan
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - A. S. Gerrie
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - D. Lewis
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
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17
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Yao N, Xie J, Li ZY, Zheng J, Jiang A, Wang YF, Liu MW. Effects of kangaroo mother care on immune function and prognosis of premature infants in the neonatal intensive care unit. J BIOL REG HOMEOS AG 2021; 35:663-667. [PMID: 33691389 DOI: 10.23812/21-34-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- N Yao
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - J Xie
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - Z Y Li
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - J Zheng
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - A Jiang
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - Y F Wang
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - M W Liu
- Department of Department of Emergency Medicine, the First Affiliated Hospital of Kunming Medical University, Wuhua District, Kunming, China
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18
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Jiang A, Yin D, Zhang L, Li B, Li R, Zhang X, Zhang Z, Liu H, Kim K, Wu W. Parsing the microRNA genetics basis regulating skeletal muscle fiber types and meat quality traits in pigs. Anim Genet 2021; 52:292-303. [PMID: 33840112 DOI: 10.1111/age.13064] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2021] [Indexed: 12/29/2022]
Abstract
Muscle fibers are closely related to human diseases and livestock meat quality. However, the genetics basis of microRNAs (miRNAs) in regulating muscle fibers is not completely understood. In this study, we constructed the whole genome-wide miRNA expression profiles of porcine fast-twitch muscle [biceps femoris (Bf)] and slow-twitch muscle [soleus (Sol)], and identified hundreds of miRNAs, including four skeletal muscle-highly expressed miRNAs, ssc-miR-378, ssc-let-7f, ssc-miR-26a, and ssc-miR-27b-3p. Moreover, we identified 63 differentially expressed (DE) miRNAs between biceps femoris vs. soleus, which are the key candidate miRNAs regulating the skeletal muscle fiber types. In addition, we found that the expression of DE ssc-miR-499-5p was significantly correlated to the expression of Myoglobin (r = 0.6872, P < 0.0001) and Myosin heavy chain 7 (MYH7; r = 0.5408, P = 0.0020), and pH45 min (r = 0.3806, P = 0.0380) and glucose content (r = -0.4382, P = 0.0154); while the expression of DE ssc-miR-499-3p was significantly correlated to the expression of Myoglobin (r = 0.5340, P = 0.0024) and pH45 min (r = 0.4857, P = 0.0065). Taken together, our data established a sound foundation for further studies on the regulatory mechanisms of miRNAs in skeletal muscle fiber conversion and meat quality traits in livestock, and could provide a genetic explanation of the role of miRNAs in human muscular diseases.
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Affiliation(s)
- A Jiang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - D Yin
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - L Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - B Li
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - R Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - X Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Z Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - H Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - K Kim
- Department of Food Science, Purdue University, West Lafayette, IN, 47897, USA
| | - W Wu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
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19
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Tisack A, Jiang A, Veenstra J. Crusted, ulcerated plaques on the scalp and face. Clin Exp Dermatol 2020; 46:199-202. [PMID: 32959399 DOI: 10.1111/ced.14441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/29/2020] [Accepted: 08/04/2020] [Indexed: 11/30/2022]
Affiliation(s)
- A Tisack
- Wayne State University School of Medicine, Detroit, MI, USA
| | - A Jiang
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
| | - J Veenstra
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
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20
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Yang X, Hu W, Xiu Z, Jiang A, Yang X, Saren G, Ji Y, Guan Y, Feng K. Effect of salt concentration on microbial communities, physicochemical properties and metabolite profile during spontaneous fermentation of Chinese northeast sauerkraut. J Appl Microbiol 2020; 129:1458-1471. [PMID: 32677269 DOI: 10.1111/jam.14786] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 05/30/2020] [Revised: 06/29/2020] [Accepted: 07/12/2020] [Indexed: 11/30/2022]
Abstract
AIM The aim of this study was to study the effects of salt concentrations on the microbial communities, physicochemical properties, metabolome profiles and sensory characteristics during the fermentation of traditional northeast sauerkraut. METHODS AND RESULTS Northeast sauerkraut was spontaneously fermented under four salt concentrations (0·5, 1·5, 2·5 and 3·5%, w/w). The result of microbiological analysis showed that the population of lactic acid bacteria in 2·5%-salted sauerkraut was significantly higher than that in the other samples. Correspondingly, the speed of decrease in pH and accumulation of acids were the highest in 2·5%-salted sauerkraut. The glucose (analysed by HPLC) in 2·5%-salted sauerkraut was consumed more completely to produce higher levels of organic acids compared to those in the other samples. Principle component analysis showed clear differences in the metabolites of sauerkraut according to different salt concentrations. A higher level of volatiles (detected by HS-SPME/GC-MS) was identified in 2·5%-salted sauerkraut, and sensory evaluation demonstrated that 2·5%-salted sauerkraut had the best sensory characteristics. CONCLUSION The best quality of sauerkraut was obtained from fermented under 2·5% salt concentration. SIGNIFICANCE AND IMPACT OF THE STUDY This study facilitated the understanding of the effects of salt on the sauerkraut fermentation and may be useful for developing the quality of sauerkraut.
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Affiliation(s)
- X Yang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - W Hu
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Z Xiu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China
| | - A Jiang
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - X Yang
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - G Saren
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Y Ji
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Y Guan
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - K Feng
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
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21
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Arthur S, Mottok A, Cojocaru R, Jiang A, Grande B, Alcaide M, Rushton C, Ennishi D, Kumar Lat P, Davidson J, Bushell K, Audas T, Unrau P, Sen D, Gascoyne R, Marra M, Connors J, Morin G, Scott D, Steidl C, Morin R. FUNCTIONAL CHARACTERIZATION OF NFKBIZ
3′ UTR MUTATIONS IN DIFFUSE LARGE B-CELL LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.43_2629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S.E. Arthur
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - A. Mottok
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - R. Cojocaru
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - A. Jiang
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - B.M. Grande
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - M. Alcaide
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - C. Rushton
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - D. Ennishi
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - P. Kumar Lat
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - J. Davidson
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - K.R. Bushell
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - T. Audas
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - P. Unrau
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - D. Sen
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - R.D. Gascoyne
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - M.A. Marra
- Genome Sciences Centre; BC Cancer; Vancouver Canada
| | - J.M. Connors
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - G.B. Morin
- Genome Sciences Centre; BC Cancer; Vancouver Canada
| | - D.W. Scott
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - C. Steidl
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - R.D. Morin
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
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22
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Hilton L, Alcaide M, Ben-Neriah S, Jiang A, Grande B, Rushton C, Boyle M, Meissner B, Scott D, Morin R. CRYPTIC MYC
AND BCL2
REARRANGEMENTS ARE AMONG A RANGE OF GENETIC MECHANISMS UNDERLYING THE DOUBLE HIT SIGNATURE IN NON-DOUBLE HIT DIFFUSE LARGE B-CELL LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.42_2629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- L.K. Hilton
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
| | - M. Alcaide
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
| | - S. Ben-Neriah
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - A. Jiang
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - B.M. Grande
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
| | - C.K. Rushton
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
| | - M. Boyle
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - B. Meissner
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - D.W. Scott
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - R.D. Morin
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
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23
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Xu B, Chen Y, Jiang A, Chen C, Wang K, Zheng J, Fu Y. [Application of next generation sequencing in congenital sensorineural deafness]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:811-815. [PMID: 29921047 DOI: 10.13201/j.issn.1001-1781.2018.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Indexed: 11/12/2022]
Abstract
Objective:The next-generation sequencing technology (NGS) was used to perform genetic testing on children diagnosed with sensorineural hearing loss in outpatient clinics.The information on the status and inheritance of disease causing genes in deafness was analyzed to provide a theoretical basis for genetic counseling, prenatal diagnosis, and birth defects prevention.Method:Ninety-four cases of sensorineural deafness diagnosed by medical history, audiological examination, and imaging examination were collected in our department.Next-generation sequencing was used to detect the region of exons of 159 genes, 6 mitochondrial genes, and 3 miRNAs related to deafness. The Sanger sequencing verification was performed on the parents of the probands to find out the gene expression status and relationship between the probands and the parents.Result:Of the 94 children with deafness,70 had severe sensorineural hearing loss, 13 had moderate to severe hearing loss, 8 had moderate hearing loss, and 3 had mild hearing loss.Twenty-three cases of cariogenic mutations were detected by next generation sequencing,and the total mutation rate was 24.5%. There were 11 cases of GJB2 mutations, including 6 homozygous mutations of 235delC, 4 heterozygous mutations of 235delC and 299_300del heterozygous mutation of 235delC and c.176_191del.There are 5 cases of SLC26A4 gene mutations, including 2 cases of homozygous mutations of c.919-2A> G, one case of c.919-2A> G and c.2168A>G compound heterozygous mutations, c.919-2A> G and c.754T> C compound heterozygous mutation in 1 case, c.919 2A> G and c.416-418del complex heterozygous mutation in 1 case. There were 2 cases of MT RNR1 mutations, and 1 case of STRC,KCNQ1,USH2A,POU3F4, and MITF mutations.Conclusion:The next-generation sequencing has features such as rapid, high throughput, and low cost, which is beneficial to medication guidance, genetic counseling, and marriage and parenting guidance,and help to effectively prevent or reduce the occurrence of hereditary deafness..
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Affiliation(s)
- B Xu
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - Y Chen
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - A Jiang
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - C Chen
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - K Wang
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - J Zheng
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - Y Fu
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
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24
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Cheng W, Lu J, Lin W, Wei X, Li H, Zhao X, Jiang A, Yuan J. Effects of a galacto-oligosaccharide-rich diet on fecal microbiota and metabolite profiles in mice. Food Funct 2018; 9:1612-1620. [DOI: 10.1039/c7fo01720k] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Galacto-oligosaccharides (GOS) are prebiotics that positively affect the host's gut microbiota, which is important for the health of the host.
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Affiliation(s)
- W. Cheng
- College of Food Science
- South China Agricultural University
- Guangzhou
- China
| | - J. Lu
- Institute of Disease Control and Prevention
- PLA
- China
| | - W. Lin
- Institute of Disease Control and Prevention
- PLA
- China
| | - X. Wei
- Institute of Disease Control and Prevention
- PLA
- China
| | - H. Li
- Institute of Disease Control and Prevention
- PLA
- China
| | - X. Zhao
- Institute of Disease Control and Prevention
- PLA
- China
| | - A. Jiang
- College of Food Science
- South China Agricultural University
- Guangzhou
- China
| | - J. Yuan
- Institute of Disease Control and Prevention
- PLA
- China
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25
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Zhou ZY, Fu Y, Bi J, Jiang A, Dai JR. [Study on the recent application of ear correction model in children with congenital auricular deformity]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:949-952. [PMID: 29798419 DOI: 10.13201/j.issn.1001-1781.2017.12.013] [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] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 11/12/2022]
Abstract
Objective:To study the short-term effect of Earwell ear correction model on congenital auricular deformity in children. Method:Selected 38 children with ear malformation, a total of 42 ears, born at the age of 7 days to 176 days, and the average age was 62.40 days, and all of patients were used the U.S. Earwell correction model for correction. Result:Final auricular morphologic results were classified as excellent (normal shape), good (nearnormal shape), and poor (slight or no improvement). And the patients were divided into group 1 (neonatal period), group 2 (28-90 days) and group 3 (more than 90 days) according to age, after using the Earwell ear correction device, the result which evaluated excellent are 100.00%, 89.47% and 72.73% respectively, and the average correction times are 16.75 days, 26.26 days and 38.91 days respectively, the ratio of complications are 0, 73.68% and 100.00% respectively. Conclusion:The effection of Earwell ear correction model is significant for the correction of children with congenital auricular deformity , the earlier treatment cause the better result, the shorter of the correcting time , and the lower of the complication rate.
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Affiliation(s)
- Z Y Zhou
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - Y Fu
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - J Bi
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - A Jiang
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - J R Dai
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
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26
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Chen B, Detyniecki K, Choi H, Hirsch L, Katz A, Legge A, Wong R, Jiang A, Buchsbaum R, Farooque P. Psychiatric and behavioral side effects of anti-epileptic drugs in adolescents and children with epilepsy. Eur J Paediatr Neurol 2017; 21:441-449. [PMID: 28238621 DOI: 10.1016/j.ejpn.2017.02.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 01/09/2017] [Accepted: 02/05/2017] [Indexed: 11/19/2022]
Abstract
PURPOSE The objective of the study was to compare the psychiatric and behavioral side effect (PBSE) profiles of both older and newer antiepileptic drugs (AEDs) in children and adolescent patients with epilepsy. METHOD We used logistic regression analysis to test the correlation between 83 non-AED/patient related potential predictor variables and the rate of PBSE. We then compared for each AED the rate of PBSEs and the rate of PBSEs that led to intolerability (IPBSE) while controlling for non-AED predictors of PBSEs. RESULTS 922 patients (≤18 years old) were included in our study. PBSEs and IPBSEs occurred in 13.8% and 11.2% of patients, respectively. Overall, a history of psychiatric condition, absence seizures, intractable epilepsy, and frontal lobe epilepsy were significantly associated with increased PBSE rates. Levetiracetam (LEV) had the greatest PBSE rate (16.2%). This was significantly higher compared to other AEDs. LEV was also significantly associated with a high rate of IPBSEs (13.4%) and dose-decrease rates due to IPBSE (6.7%). Zonisamide (ZNS) was associated with significantly higher cessation rate due to IPBSE (9.1%) compared to other AEDs. CONCLUSION Patients with a history of psychiatric condition, absence seizures, intractable epilepsy, or frontal lobe epilepsy are more likely to develop PBSE. PBSEs appear to occur more frequently in adolescent and children patients taking LEV compared to other AEDs. LEV-attributed PBSEs are more likely to be associated with intolerability and subsequent decrease in dose. The rate of ZNS-attributed IPBSEs is more likely to be associated with complete cessation of AED.
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Affiliation(s)
- B Chen
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA.
| | - K Detyniecki
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - H Choi
- Comprehensive Epilepsy Center, Dept. of Neurology, Columbia University, New York, NY, USA
| | - L Hirsch
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - A Katz
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - A Legge
- Comprehensive Epilepsy Center, Dept. of Neurology, Columbia University, New York, NY, USA
| | - R Wong
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - A Jiang
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - R Buchsbaum
- Comprehensive Epilepsy Center, Dept. of Neurology, Columbia University, New York, NY, USA
| | - P Farooque
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
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27
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Abstract
Postoperative cognitive dysfunction, which is associated with a wide range of cognitive functions including working memory, long-term memory, information processing, attention, and cognitive flexibility, is a major clinical issue in geriatric surgical patients. The aim of the current study was to determine the protective role and possible mechanisms of salidroside against isoflurane-induced cognitive impairment. Sprague Dawley rats were randomly assigned to five groups and were treated with or without salidroside before isoflurane exposure. Open-field and fear conditioning tests were conducted to evaluate the cognitive function of the rats. Moreover, the hippocampus tissues were obtained for biochemical analysis. The results showed that the isoflurane anesthesia decreased the freezing time to context significantly at 48 h after the isoflurane exposure in the fear conditioning test. Salidroside could ameliorate isoflurane-induced cognitive dysfunction. Further analysis demonstrated salidroside markedly suppressed the release of tumor necrosis factor-α and interleukin-1β. Moreover, salidroside reversed the decreased activity of choline acetyltransferase, superoxide dismutase, glutathione peroxidase, and content of acetylcholine, as well as the increased activity of acetylcholine esterase and content of malondialdehyde in hippocampal tissue of isoflurane-exposed rats. According to the results, we concluded that that salidroside has a protective effect against isoflurane-induced cognitive dysfunction by inhibiting excessive inflammatory responses, decreasing oxidative stress, and regulating the cholinergic system.
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Affiliation(s)
- L Liang
- 1 Department of anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - Z Ma
- 1 Department of anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - M Dong
- 2 Central Sterile Supply Department, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - J Ma
- 1 Department of anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - A Jiang
- 1 Department of anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - X Sun
- 3 Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
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Jassem A, Krajden M, Getman D, Hovey P, Hentzen C, Barakat N, Jiang A. Comparative evaluation of the Aptima HSV 1&2 assay and a lab developed real-time PCR test for detection of HSV-1 and HSV-2 viruses. J Clin Virol 2016. [DOI: 10.1016/j.jcv.2016.08.060] [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] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Getman D, O’Donnell M, Cohen S, Jiang A. P05.13 Prevalence and anatomical distribution of mycoplasma genitaliummacrolide resistance markers from subjects enrolled in a multi-centre us clinical study. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.299] [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] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ding Y, Li M, Chen L, Zhang Q, Jiang A, Chi Y. Combined low dose local anesthetics and opioids versus single use of LA for transurethral urological surgery: a meta-analysis. Niger J Clin Pract 2015; 18:256-62. [PMID: 25666003 DOI: 10.4103/1119-3077.151055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The combination of reduced dose of local anesthetics (LA) and highly lipid-soluble synthetic opioids for patients undergoing transurethral surgery could reduce block duration and side-effects. However, it remains unclear what are the most appropriate levels of low dose and the extent to which the side-effects could be controlled. A meta-analysis was conducted to address this concern. MATERIALS AND METHODS Based on twelve randomized controlled trials, this meta-analysis pooled previous results to generate integrated evidence. RESULTS Combined low dose of LA and opioids had similar sensory block and significantly shorter motor block duration (weighted mean difference: -39.31 min, 95% confidence interval (CI): -50.58--28.05, P < 0.00001) compared with single use of LA. There was no evidence of higher risk of analgesic failure in the combination group. In addition, combined low dose LA and opioids was associated with significantly reduced rate of postoperative hypotension (risk ratios (RR): 0.60, 95% CI: 0.37-0.96, P = 0.03) and shivering (RR: 0.27, 95% CI: 0.11-0.64, P = 0.003), but with higher rate of sedation (RR: 3.14, 95% CI: 1.02-9.66, P = 0.05). CONCLUSION Combined low dose LA and opioids is a better choice for patients received transurethral surgery compared with single use of intrathecal LA.
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Affiliation(s)
| | | | | | | | | | - Y Chi
- Department of Anaesthesiology, Yantai Yuhuangding Hospital, Qingdao University School of Medicine, 20 Yuhuangding East Road, Yantai 264000, China
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Li Z, Jiang A, Yue T, Wang J, Wang Y, Su J. Purification and identification of five novel antioxidant peptides from goat milk casein hydrolysates. J Dairy Sci 2013; 96:4242-51. [PMID: 23684032 DOI: 10.3168/jds.2012-6511] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 02/23/2013] [Indexed: 11/19/2022]
Abstract
The present research described the preparation, purification, and identification of antioxidant peptides from goat milk casein (GMC). Goat milk casein was hydrolyzed by using a combination of neutral and alkaline proteases to obtain goat milk casein hydrolysates (GMCH) with high antioxidant activity. After desalting by nonpolar macroporous absorption resin, GMCH was isolated and purified by gel filtration chromatography and reversed-phase HPLC, respectively, and further identified by nanoliter electrospray ionization-tandem mass spectrometry. Antioxidant activities of GMC, GMCH, and pure peptides were evaluated and compared using free radical scavenging activity, metal ion chelating ability, and anti-lipid peroxidation ability. Compared with GMC, the free radical-scavenging ability and ferrous ion-chelating ability of GMCH increased significantly. The inhibition effect of lipid peroxidation of GMCH was much stronger than that of tert-butylhydroquinone and phytogermine and a little lower than that of ascorbic acid. The antioxidant activity of GMCH could be attributed to the high antioxidant activity of oligopeptides, especially 5 novel oligopeptides: Val-Tyr-Pro-Phe, Phe-Gly-Gly-Met-Ala-His, Phe-Pro-Tyr-Cys-Ala-Pro, Tyr-Val-Pro-Glu-Pro-Phe, and Tyr-Pro-Pro-Tyr-Glu-Thr-Tyr, which were first observed in GMCH. The antioxidant activity of these 5 novel oligopeptides and GMCH increased 3.59 to 380 times compared with GMC, combining anti-lipid peroxidation ability of GMCH, which indicated that GMCH and its purified fractions in different stages could be used as functional food ingredients, food additives, and pharmaceutical agents in the future.
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Affiliation(s)
- Z Li
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China.
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Engelhardt BG, Jagasia M, Savani BN, Bratcher NL, Greer JP, Jiang A, Kassim AA, Lu P, Schuening F, Yoder SM, Rock MT, Crowe JE. Regulatory T cell expression of CLA or α(4)β(7) and skin or gut acute GVHD outcomes. Bone Marrow Transplant 2011; 46:436-42. [PMID: 20577222 PMCID: PMC3217583 DOI: 10.1038/bmt.2010.127] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2009] [Revised: 03/18/2010] [Accepted: 04/13/2010] [Indexed: 11/09/2022]
Abstract
Regulatory T cells (Tregs) are a suppressive subset of CD4(+) T lymphocytes implicated in the prevention of acute GVHD (aGVHD) after allo-SCT (ASCT). To determine whether increased frequency of Tregs with a skin-homing (cutaneous lymphocyte Ag, CLA(+)) or a gut-homing (α(4)β(7)(+)) phenotype is associated with reduced risk of skin or gut aGVHD, respectively, we quantified circulating CLA(+) or α(4)β(7)(+) on Tregs at the time of neutrophil engraftment in 43 patients undergoing ASCT. Increased CLA(+) Tregs at engraftment was associated with the prevention of skin aGVHD (2.6 vs 1.7%; P=0.038 (no skin aGVHD vs skin aGVHD)), and increased frequencies of CLA(+) and α(4)β(7)(+) Tregs were negatively correlated with severity of skin aGVHD (odds ratio (OR), 0.67; 95% confidence interval (CI), 0.46-0.98; P=0.041) or gut aGVHD (OR, 0.93; 95% CI, 0.88-0.99; P=0.031), respectively. This initial report suggests that Treg tissue-homing subsets help to regulate organ-specific risk and severity of aGVHD after human ASCT. These results need to be validated in a larger, multicenter cohort.
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Affiliation(s)
- BG Engelhardt
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Jagasia
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - BN Savani
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - NL Bratcher
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - JP Greer
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - A Jiang
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - AA Kassim
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - P Lu
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - F Schuening
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - SM Yoder
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - MT Rock
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - JE Crowe
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
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Shi M, Zhang H, Chen X, Guo Y, Tao J, Qi H, Gan J, Jiang A, Yu H, Liang J, Chen J, Yang L, Zhuang Y, Yan M, Gu Y, Yu X, Feng X, Yao Z. Clinical features of atopic dermatitis in a hospital-based setting in China. J Eur Acad Dermatol Venereol 2011; 25:1206-12. [PMID: 21214635 DOI: 10.1111/j.1468-3083.2010.03953.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) is a chronic relapsing inflammatory skin disease. There have been few detailed reports of the clinical evaluation of Chinese patients with AD. OBJECTIVES To give a profile of the clinical features of Chinese AD patients in a university hospital setting. METHODS A total of 1008 cases met Hanifin and Rajka diagnostic criteria of AD were recruited at Xinhua Hospital, Shanghai Jiaotong University School of Medicine, China. RESULTS In our survey, 22.7% patients were mild, 66.6% were moderate and 10.7% were severe according to the SCORAD index. Both the frequency and severity of the male patients were slightly higher. The frequency of asthma among the AD patients was 16.7% and it was increased with the age (χ2 = 205.20, P = 0.000). The frequencies of objective minor signs were demonstrated with age-related changes. Besides, three localized variants including eyelid eczema (49.8%), scalp dermatitis (49.7%), infra-auricular and retroauricular fissuring (44.8%) were commonly observed, especially in the infantile phase (P < 0.01). It was showed significant differences in serum total immunoglobulin E (IgE) and eosinophil cationic protein (ECP) levels of different age groups. The positive rate of Phadiatop was raised after 3 years old and that of the common food allergens were decreased after 6 years old. CONCLUSIONS More males than females had ongoing AD in our survey. Most AD debuted in the first year of the cases. High incidence of the three clinical signs: eyelid eczema, scalp dermatitis and infra-auricular and retroauricular fissuring among the patients suggests it can be a potential valuable diagnostic clue to AD.
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Affiliation(s)
- M Shi
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Ocak S, Yamashita H, Udyavar AR, Miller AN, Gonzalez AL, Zou Y, Jiang A, Yi Y, Shyr Y, Estrada L, Quaranta V, Massion PP. DNA copy number aberrations in small-cell lung cancer reveal activation of the focal adhesion pathway. Oncogene 2010; 29:6331-42. [PMID: 20802517 DOI: 10.1038/onc.2010.362] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Small-cell lung cancer (SCLC) is the most aggressive subtype of lung cancer in its clinical behavior, with a 5-year overall survival as low as 5%. Despite years of research in the field, molecular determinants of SCLC behavior are still poorly understood, and this deficiency has translated into an absence of specific diagnostics and targeted therapeutics. We hypothesized that tumor DNA copy number alterations would allow the identification of molecular pathways involved in SCLC progression. Array comparative genomic hybridization was performed on DNA extracted from 46 formalin-fixed paraffin-embedded SCLC tissue specimens. Genomic profiling of tumor and sex-matched control DNA allowed the identification of 70 regions of copy number gain and 55 regions of copy number loss. Using molecular pathway analysis, we found a strong enrichment in these regions of copy number alterations for 11 genes associated with the focal adhesion pathway. We verified these findings at the genomic, gene expression and protein level. Focal Adhesion Kinase (FAK), one of the central genes represented in this pathway, was commonly expressed in SCLC tumors and constitutively phosphorylated in SCLC cell lines. Those were poorly adherent to most substrates but not to laminin-322. Inhibition of FAK phosphorylation at Tyr(397) by a small-molecule inhibitor, PF-573,228, induced a dose-dependent decrease of adhesion and an increase of spreading in SCLC cell lines on laminin-322. Cells that tended to spread also showed a decrease in focal adhesions, as demonstrated by a decreased vinculin expression. These results support the concept that pathway analysis of genes in regions of copy number alterations may uncover molecular mechanisms of disease progression and demonstrate a new role of FAK and associated adhesion pathways in SCLC. Further investigations of FAK at the functional level may lead to a better understanding of SCLC progression and may have therapeutic implications.
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Affiliation(s)
- S Ocak
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University, Nashville, TN 37232-6838, USA
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Chang H, Qi X, Jiang A, Xu W, Trieu Y, Reece D. Erratum: 1p21 deletions are strongly associated with 1q21 gains and are an independent adverse prognostic factor for the outcome of high-dose chemotherapy in patients with multiple myeloma. Bone Marrow Transplant 2010. [DOI: 10.1038/bmt.2009.158] [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] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Chang H, Qi X, Jiang A, Xu W, Young T, Reece D. 1p21 deletions are strongly associated with 1q21 gains and are an independent adverse prognostic factor for the outcome of high-dose chemotherapy in patients with multiple myeloma. Bone Marrow Transplant 2009; 45:117-21. [PMID: 19448682 DOI: 10.1038/bmt.2009.107] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Miller TW, Perez-Torres M, Wu H, Shyr Y, Guix M, Jiang A, Stal O, Arteaga CL. Loss of PTEN engages ErbB3 and IGF-I receptor signaling to promote antiestrogen resistance in breast cancer. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Abstract #73
We sought to determine whether loss of the lipid phosphatase PTEN confers resistance to antiestrogens in estrogen receptor (ER)-positive breast cancer cells and primary tumors. Stable knockdown of PTEN expression (PTEN-kd) with shRNA in MCF-7, T47D, and MDA-361 ER+ human breast cancer cells resulted in upregulation of PI3K and P-Akt, resistance to tamoxifen and faslodex, and estrogen-independent growth. Upon PTEN-kd, ER levels were maintained in MCF-7 cells but markedly reduced in T47D and MDA-361 cells. While PTEN-kd upregulated ER transcriptional reporter activity in MCF-7 cells, opposite effects were seen in T47D and MDA-361 cells.
 We evaluated mechanisms of PI3K activation in PTEN-kd cells by immunoprecipitating the p85 regulatory subunit of PI3K and examining p85-bound tyrosine-phosphorylated adaptors or receptors. PTEN-kd increased the binding of p85 to IRS-1 (MCF-7) and ErbB3 (T47D). PTEN-kd increased PI3K pathway sensitivity to IGF-I (MCF-7) and endogenous ligand (T47D, MDA-361). PTEN-kd cells had increased and prolonged activation of IGF-IR and ErbB3, thus implicating PTEN in the regulation of signaling upstream of PI3K. Further, PTEN-kd increased non-genomic, estrogen-induced signaling via IGF-IR by increasing p85-IRS-1 binding and activation of PI3K/Akt in MCF-7 cells. Inhibition of PI3K and mTOR with the small molecule BEZ235, of IGF-IR with the small molecule AEW541, and/or of ErbB2-mediated activation of ErbB3 with lapatinib restored the growth inhibitory effect of antiestrogens.
 We generated gene expression signatures of PTEN loss in each cell line by microarray analyses. Comparison of these signatures to the Connectivity Map (Science 313:1929, 2006) suggested activation of PI3K, as signatures of PTEN loss negatively connected with those induced by the PI3K inhibitors wortmannin and LY294002 (all p<0.06). We found a 24-gene signature of PTEN loss common to all 3 lines, which we used to score the gene expression profiles of tumors from a cohort of 268 patients with ER+ breast cancer treated with adjuvant tamoxifen for 5 yrs and a median follow-up of 9.1 years (BMC Genomics 9:239, 2008). Patients with tumors exhibiting a signature of PTEN loss had shorter relapse-free survival (p<0.0001; log rank test). Eleven genes in the PTEN signature were individually predictive of disease outcome (p<0.05). In a separate, smaller cohort of patients with ER+ cancers treated with adjuvant tamoxifen (n=34), undetectable PTEN in tumor cells (measured by IHC) correlated with shorter relapse-free survival vs. tumors with detectable PTEN (p=0.06). These data suggest that 1) PTEN loss confers antiestrogen resistance to ER+ breast cancer by genomic and non-genomic mechanisms; 2) PTEN loss is permissive for activation of IGF-IR and ErbB3 signaling; 3) inhibition of IGF-IR and/or ErbB signaling pathways overcomes the resistance to antiestrogens conferred by PTEN loss; and 4) a gene expression signature reflective of loss of PTEN and/or absence of PTEN protein can predict poor patient outcome after adjuvant hormonal therapy.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 73.
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Affiliation(s)
| | | | - H Wu
- 1 Vanderbilt Univ., Nashville, TN
| | - Y Shyr
- 1 Vanderbilt Univ., Nashville, TN
| | - M Guix
- 1 Vanderbilt Univ., Nashville, TN
| | - A Jiang
- 1 Vanderbilt Univ., Nashville, TN
| | - O Stal
- 2 Linkoping Univ., Linkoping, Sweden
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Wang L, Chopp M, Zhang RL, Zhang L, Letourneau Y, Feng YF, Jiang A, Morris DC, Zhang ZG. The Notch pathway mediates expansion of a progenitor pool and neuronal differentiation in adult neural progenitor cells after stroke. Neuroscience 2008; 158:1356-63. [PMID: 19059466 DOI: 10.1016/j.neuroscience.2008.10.064] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2008] [Revised: 10/13/2008] [Accepted: 10/29/2008] [Indexed: 12/13/2022]
Abstract
Molecular mechanisms by which stroke increases neurogenesis have not been fully investigated. Using neural progenitor cells isolated from the subventricular zone (SVZ) of the adult rat subjected to focal cerebral ischemia, we investigated the Notch pathway in regulating proliferation and differentiation of adult neural progenitor cells after stroke. During proliferation of neural progenitor cells, ischemic neural progenitor cells exhibited substantially increased levels of Notch, Notch intracellular domain (NICD), and hairy enhancer of split (Hes) 1, which was associated with a significant increase of proliferating cells. Blockage of the Notch pathway by short interfering ribonucleic acid (siRNA) against Notch or a gamma secretase inhibitor significantly reduced Notch, NICD and Hes1 expression and cell proliferation induced by stroke. During differentiation of neural progenitor cells, Notch and Hes1 expression was downregulated in ischemic neural progenitor cells, which was coincident with a significant increase of neuronal population. Inhibition of the Notch pathway with a gamma secretase inhibitor further substantially increased neurons, but did not alter astrocyte population in ischemic neural progenitor cells. These data suggest that the Notch signaling pathway mediates adult SVZ neural progenitor cell proliferation and differentiation after stroke.
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Affiliation(s)
- L Wang
- Department of Neurology, Henry Ford Health Sciences Center, Detroit, MI 48202, USA
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Harutyunyan AR, Awasthi N, Jiang A, Setyawan W, Mora E, Tokune T, Bolton K, Curtarolo S. Reduced carbon solubility in Fe nanoclusters and implications for the growth of single-walled carbon nanotubes. Phys Rev Lett 2008; 100:195502. [PMID: 18518458 DOI: 10.1103/physrevlett.100.195502] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2007] [Indexed: 05/26/2023]
Abstract
Fe nanoclusters are becoming the standard catalysts for growing single-walled carbon nanotubes via chemical vapor decomposition. Contrary to the Gibbs-Thompson model, we find that the reduction of the catalyst size requires an increase of the minimum temperature necessary for the growth. We address this phenomenon in terms of solubility of C in Fe nanoclusters and, by using first-principles calculations, we devise a simple model to predict the behavior of the phases competing for stability in Fe-C nanoclusters at low temperature. We show that, as a function of particle size, there are three scenarios compatible with steady state growth, limited growth, and no growth of single-walled carbon nanotubes, corresponding to unaffected, reduced, and no solubility of C in the particles.
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Sabbah HN, Wang M, Ilsar I, Jiang A, Tuvia S. Intracoronary administration of BL-1040 prevents progressive left ventricular enlargement in dogs with acute myocardial infarction. Cardiovascular Revascularization Medicine 2008. [DOI: 10.1016/j.carrev.2008.02.067] [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] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Brewer R, Wang M, Rastogi S, Ilsar I, Jiang A, Viole T, Konstam M, Sabbah H. 281: Acute Left Ventricular Unloading in Dogs with Chronic Heart Failure: Comparison of Hemodynamics and Gene Expression between Intra-Aortic Balloon Counterpulsation and Continuous Aortic Flow Augmentation. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.290] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Shi Y, Lv Y, Wang B, Zhang Y, Jiang A, Li JH, Zhang XF, Li QY, Meng KW, Liu C, Yu L, Pan CE. Novel magnetic rings for rapid vascular reconstruction in canine liver transplantation model. Transplant Proc 2007; 38:3070-4. [PMID: 17112902 DOI: 10.1016/j.transproceed.2006.08.174] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2005] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Magnetic rings were used for rapid vascular reconstruction in a canine liver transplantation model. MATERIALS AND METHODS Thirty-two adult mongrel dogs weighing 13 to 16 kg were randomly selected as donors or recipients of transplantations. The recipients were randomly divided into two groups: group A (n = 10) had magnetic rings used for vascular reconstruction without venovenous bypass; group B (n = 6) had vascular reconstruction performed by continuous suturing with splenojugular venovenous bypass. RESULTS In group A, the entire operative period was 3.24 +/- 0.49 hours, the durations of clamping the portal vein and the infrahepatic vena cava of the recipient were 5.89 +/- 2.27 minutes and 3.89 +/- 0.73 minutes, respectively. In group B, the entire operative period was 4.12 +/- 0.51 hours with the duration of clamping portal vein and infrahepatic vena cava, 28.33 +/- 6.04 minutes and 12.16 +/- 3.72 minutes (P < .01 vs group A). In group A, mean arterial pressure dropped during the anhepatic phase but recovered quickly after reperfusion. The fluid infusion was about 730.56 +/- 50.56 mL in the group A and a pressor agent was unnecessary. In group B, blood pressure dropped during the anhepatic phase and slowly recovered. The fluid infusion was about 2241.67 +/- 390.78 mL and a pressor agent was used to maintain the blood pressure of the recipient. No twist or thrombus was discovered in the anastomoses group A and the endothelium at the site of anastomosis was entire. In group B, errhysis was common in the anastomotic stomas. Nine of 10 dogs in group A survived more than 3 days, the longest being 8 days, whereas four of the six dogs in group B survived less than 3 days. CONCLUSION The results showed that the anhepatic time was significantly shortened (about 5.89 +/- 2.27 minutes) in group A compared with group B and venovenous bypass was unnecessary. Magnetic rings could be used for rapid vascular reconstruction in canine liver transplantation model. The long-term results of this procedure should be clarified before it is applied in clinical practice in the future.
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Affiliation(s)
- Y Shi
- Department of Hepatobiliary Surgery, First Hospital of Xi'an Jiao Tong University, China.
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Huang R, Zhang J, Ma L, Jiang A, Kong XJ, Li XK, Bao L. Efficiencies of residual organic pollutants removal from secondary effluent by switching of coagulation- air flotation -filtration processes. Water Sci Technol 2006; 54:215-24. [PMID: 17302323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
It is an essential task to remove the residual organic pollutants (ROP) from secondary effluent of a Wastewater Treatment Plant (WWTP) in wastewater reclamation and reuse processes. Four different compared flow schemes would be achieved for further purification of the secondary effluent by switching of different valves. In order to mainly remove non-biodegradable residual organic pollutants under various operating conditions, the optimum technology and economic process was obtained in the advanced purification flow scheme at a flow of 3200 m(3)/d in Harbin Wenchang WWTP. Conclusions under a lot of experiments show that: choosing the coagulation-settler plus biofilm filter for advanced purification process is reasonable; during the stable operation phase, this process showed good performance in removing the COD, BOD5, TP, NH3-N and SS; the removal rates are 50%, 39%, 67%, 50%, 80% respectively. The effluent is able to excel the requirements for wastewater reuse standards. The unit cost of the water is 0.542 yuan/m(3), which is far below the fee paid for supply water, long-distance transfer water or seawater desalination through economic analysis.
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Affiliation(s)
- R Huang
- Secondary campus 2427#, School of Municipal and Environment Engineering, Harbin Institute of Technology, Heilongjiang 150090, China.
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Jiang A, Zhang L, Zhao C, Yang F. Clinical effect of acupuncture treatment in 109 cases of knee osteoarthritis. J TRADIT CHIN MED 2001; 21:282-5. [PMID: 12014131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- A Jiang
- Acupuncture Research Clinic, Singapore Hongmaoqiao Community Hospital, Singapore 569766
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Jiang A, Lehti K, Wang X, Weiss SJ, Keski-Oja J, Pei D. Regulation of membrane-type matrix metalloproteinase 1 activity by dynamin-mediated endocytosis. Proc Natl Acad Sci U S A 2001; 98:13693-8. [PMID: 11698655 PMCID: PMC61103 DOI: 10.1073/pnas.241293698] [Citation(s) in RCA: 215] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Membrane-type matrix metalloproteinase 1 (MT1-MMP) plays a critical role in extracellular matrix remodeling under both physiological and pathological conditions. However, the mechanisms controlling its activity on the cell surface remain poorly understood. In this study, we demonstrate that MT1-MMP is regulated by endocytosis. First, we determined that Con A induces proMMP-2 activation in HT1080 cells by shifting endogenous MT1-MMP from intracellular compartments to cell surface. This phenotype was mimicked by the cytoplasmic truncation mutant MT1 Delta C with more robust pro-MMP-2 activation and cell surface expression than wild-type MT1-MMP in transfected cells. MT1 Delta C was subsequently shown to be resistant to Con A treatment whereas MT1-MMP remains competent, suggesting that Con A regulates MT1-MMP activity through cytoplasmic domain-dependent trafficking. Indeed, MT1-MMP was colocalized with clathrin on the plasma membrane and with endosomal antigen 1 in endosomes. Internalization experiments revealed that MT1-MMP is internalized rapidly in clathrin-coated vesicles whereas MT1 Delta C remains on cell surface. Coexpression of a dominant negative mutant of dynamin, K44A, resulted in elevation of MT1-MMP activity by interfering with the endocytic process. Thus, MT1-MMP is regulated by dynamin-dependent endocytosis in clathrin-coated pits through its cytoplasmic domain.
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Affiliation(s)
- A Jiang
- Department of Pharmacology, University of Minnesota, 6-120 Jackson Hall, 321 Church Street SE, Minneapolis, MN 55455, USA
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Abstract
Apoptosis plays a central role in shaping the repertoire of circulating mature B lymphocytes, but the underlying molecular mechanisms regulating B cell fate are not well understood. Human B104 B lymphoma cells undergo apoptosis after surface Ig (sIg)M, but not sIgD, ligation; sIgM-mediated apoptosis of B104 cells apparently requires new gene transcription because actinomycin D can inhibit the apoptotic response. Here we report that expression of Bik, a proapoptotic member of the Bcl-2 family, is greatly increased after sIgM ligation. Bik expression was tightly controlled at both transcriptional and post-transcriptional levels. Whereas a calcineurin-dependent pathway was essential for Bik mRNA induction, both the phosphatidylinositol 3-kinase (PI3K)- and the calcineurin-dependent pathways were required for the sustained production of Bik protein. Consistent with these findings, sIgD ligation, which leads to the similar calcium mobilization and increases in Bik mRNA, induced only a transient activation of PI3K and did not lead to sustained Bik protein expression. Furthermore, sustained Bik protein expression correlated with B cell apoptosis, as treatment with either a calcineurin inhibitor or PI3K inhibitors blocked both sIgM-mediated sustained Bik protein induction and apoptosis. In addition, sIgM ligation strongly increased the amount of Bik associated with endogenous Bcl-x, but sIgD ligation did not. Studies with caspase inhibitors also revealed that Bik and Bcl-x interacted upstream of caspases in the B cell apoptosis cascade. Thus, Bik protein induction and, subsequently, sequestering of antiapoptotic Bcl-x by Bik may play an important role in regulating B cell apoptosis.
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MESH Headings
- Apoptosis/genetics
- Apoptosis/immunology
- Apoptosis Regulatory Proteins
- B-Lymphocytes/cytology
- B-Lymphocytes/enzymology
- B-Lymphocytes/immunology
- B-Lymphocytes/metabolism
- Calcineurin/physiology
- Caspases/metabolism
- Enzyme Activation/immunology
- Gene Expression Regulation, Neoplastic/immunology
- Genes, Immediate-Early/immunology
- Humans
- Immunoglobulin D/immunology
- Immunoglobulin D/metabolism
- Immunoglobulin D/physiology
- Immunoglobulin M/immunology
- Immunoglobulin M/metabolism
- Immunoglobulin M/physiology
- Membrane Proteins
- Mitochondrial Proteins
- Phosphatidylinositol 3-Kinases/metabolism
- Phosphatidylinositol 3-Kinases/physiology
- Protein Biosynthesis
- Proteins/genetics
- Proteins/metabolism
- Proteins/physiology
- Proto-Oncogene Proteins c-bcl-2/metabolism
- Proto-Oncogene Proteins c-bcl-2/physiology
- Receptors, Antigen, B-Cell/immunology
- Receptors, Antigen, B-Cell/metabolism
- Receptors, Antigen, B-Cell/physiology
- Signal Transduction/immunology
- Transcription, Genetic/immunology
- Tumor Cells, Cultured
- bcl-X Protein
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Affiliation(s)
- A Jiang
- Department of Microbiology, University of Washington, Seattle, WA 98195, USA
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Wang H, Qian B, Niu F, Jiang A. [Changes of genomic density polymorphism and quantitative expression of complement receptor type 1 in patients with liver diseases]. Zhonghua Gan Zang Bing Za Zhi 2000; 8:335-7. [PMID: 11135688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
OBJECTIVE To study the changes of genomic density polymorphism and quantitative expression of complement receptor type 1 (CR1) on erythrocytes in patients with liver diseases. METHODS Polymerase chain reaction (PCR) and Hind III restriction enzyme digestion and the quantitative assay of erythrocytic CR1 were used. RESULTS The spot mutation rate (25.0% approximately 30.3%) of erythrocyte CR1 density gene in patients with liver diseases was not significantly different with that of healthy individuals (28.0%). The amount of erythrocytic CR1 in patients with liver diseases, except for those with normal liver function, was significantly lower than that of healthy individuals (t=10.44, P<0.0001). The quantitative expression of erythrocytic CR1 in decompensated cirrhosis was obviously lower than that of compensated cirrhosis (t=2.21, P<0.05). CONCLUSION Defective expression of CR1 in liver diseases is acquired through central and/or peripheral mechanisms. It is very important to study the quantitative expression in the evaluation of the development of liver diseases.
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Affiliation(s)
- H Wang
- Department of Immunology, Changhai Hospital, The Second Military Medical University, Shanghai 200433, China
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Kang T, Yi J, Yang W, Wang X, Jiang A, Pei D. Functional characterization of MT3-MMP in transfected MDCK cells: progelatinase A activation and tubulogenesis in 3-D collagen lattice. FASEB J 2000; 14:2559-68. [PMID: 11099475 DOI: 10.1096/fj.00-0269com] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
MT3-MMP, a membrane-anchored matrix metalloproteinase, has been proposed to participate in the remodeling of extracellular matrix either by direct proteolysis or via activating other enzymes such as progelatinase A. To test this hypothesis, we analyzed the effect of exogenously transfected MT3-MMP in a tissue remodeling system: growth and tubulogenesis of Madin-Darby canine kidney (MDCK) cells in collagen gels. Although the parental cells require MMP activities for both growth and tubulogenesis, over-expression of wild-type MT3-MMP, but not its catalytically inactive mutant, leads to further enhancement of both processes, independent of its downstream substrate, progelatinase A. Mechanistically, MT3-MMP accomplishes such an effect by displaying on cell surfaces as active species, ready to activate progelatinase A or degrade ECM molecules. These data strongly suggest that MT3-MMP possesses the potential to directly enhance the growth and invasiveness of cells in vivo, two critical processes for development and carcinogenesis.
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Affiliation(s)
- T Kang
- Department of Pharmacology, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Gautier R, Jiang A, Rousseau V, Dornburg R, Jaffredo T. Avian reticuloendotheliosis virus strain A and spleen necrosis virus do not infect human cells. J Virol 2000; 74:518-22. [PMID: 10590142 PMCID: PMC111564 DOI: 10.1128/jvi.74.1.518-522.2000] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/1998] [Accepted: 09/30/1999] [Indexed: 11/20/2022] Open
Abstract
Spleen necrosis virus (SNV) and Reticuloendotheliosis virus strain A (REV-A) belong to the family of reticuloendotheliosis viruses and are 90% sequence related. SNV-derived retroviral vectors produced by the REV-A-based D17.2G packaging cell line were shown to infect human cells (H.-M. Koo, A. M. C. Brown, Y. Ron, and J. P. Dougherty, J. Virol. 65:4769-4776, 1991), while similar vectors produced by another SNV-based packaging cell line, DSH134G, are not infectious in human cells (reviewed by R. Dornburg, Gene Ther. 2:301-310, 1995). Here we describe a careful reevaluation of the infectivity of vectors produced from the most commonly used REV-A- or SNV-based packaging cells obtained from various sources with, among them, one batch of D17.2G packaging cells obtained from the American Type Culture Collection. None of these packaging cells produced vectors able to infect human cells. Thus, contrary to previously published data, we conclude that REV-based vectors are not infectious in human cells.
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Affiliation(s)
- R Gautier
- Institut d'Embryologie Cellulaire et Moléculaire du CNRS et du Collège de France, 94736 Nogent-sur-Marne Cedex, France
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50
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Abstract
Cell type-specific gene delivery will be essential for in vivo gene therapy. Our laboratory has previously developed retroviral vector particles, derived from spleen necrosis virus, SNV, which display the antigen-binding site of an antibody on the viral surface. Such particles infected only human cells in vitro, which expressed a receptor recognized by the antibody. To test cell type-specific gene delivery in vivo, a mouse model system has been developed. Antibiotic resistant human target and non-target cells were injected into the peritoneum of SCID mice. Subsequently, a vector solution containing 106 infectious particles, which display scAs against the human her2neu cell surface protein, was injected. Cells were recovered from the peritoneum, subjected to antibiotic selection, and tested for the expression of a lacZ gene transduced by the retroviral vector. We found that human target cells, which express her2neu, were infected in vivo. However, neither human cells that do not express her2neu, nor normal mouse cells were infected by such viral particles. These data give proof of principle that retroviral vector-mediated, cell type-specific gene delivery can be obtained in vivo.
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Affiliation(s)
- A Jiang
- Thomas Jefferson University, Division of Infectious Diseases, Center for Human Virology, The Dorrance H Hamilton Laboratories, 1020 Locust Street, Suite 329, Philadelphia, PA 19107, USA
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