Background: Psoriasis is considered a common skin disease, marked by the production and elevation of inflammatory plaques that regularly shed scales resulting from extensive skin epithelial cell proliferation. T lymph...Background: Psoriasis is considered a common skin disease, marked by the production and elevation of inflammatory plaques that regularly shed scales resulting from extensive skin epithelial cell proliferation. T lymphocytes, neutrophils, and other leukocytes enter the irritated skin, resulting in epidermal keratinocyte hyperplasia, vascular hyperplasia, ectasia, and T lymphocyte, neutrophil other forms of leukocyte infiltration. Aim of the Work: the study aimed to investigate the role of IL-37 and VEGF gene expression in the pathogenesis of psoriasis in Egyptian patients. Methodology: Polymerase chain reaction techniques (PCR) were applied to detect VEGF in the skin homogenates of psoriasis patients. In addition, the ELIZA technique was applied to investigate IL-37 in skin homogenates. One hundred cases have been divided into two groups: 50 healthy volunteers as the group I healthy control;50 psoriasis patients as group II. PCR real-time technology was assessed through extracted DNA samples for VEGF amplification in skin homogenate. Result: Our results revealed that psoriasis patients significantly had a substantial reduction in IL-37 compared to the control group (p Conclusion: There is a significant inverse association between IL-37 and VEGF in psoriasis patients. Study findings revealed that IL-37 gene expression decreases while VEGF gene expression increases in psoriatic individuals. Such a measurement may be beneficial in determining the severity of the condition, as well as taking into consideration of the disease’s diagnosis.展开更多
This study was carried out to investigate the possible enhancement of im- munogenicity of the carboxyl-terminal peptide of β-hCG which is made up of 37 amino acid residues (109-145) and contains the specific epito...This study was carried out to investigate the possible enhancement of im- munogenicity of the carboxyl-terminal peptide of β-hCG which is made up of 37 amino acid residues (109-145) and contains the specific epitope (antigenic determinant) of hCG. Materials &. Methods hCGβ-CTP37 tetraploid cDNA was constructed by linking four hCGβ-CTP37 cDNAs together. The product was then subcloned into the E. coli expres- sion vector pQE60 to construct the expression vector pQE60/ (hCGβ-CTP37)4. Recom- binant (hCGβ-CTP37)4 was expressed in E. colt-X-blue. Results Western blot analysis showed that the tetraploid of hCGβ-CTP37 had an ap- parent molecular weight of 20 kD and had relatively stronger anti-hCG antibody-bind- ing activity compared with the diploid from. Conclusion The tetraploid of hCGβ-CTP37 may be a more potent immunogen for raising anti-hCG vaccines for fertility regulation or suppression of tumor.展开更多
Genetic defects are one of the most important etiologies of severe to profound sensorineural hearing loss and play an important role in determining cochlear implantation outcomes.While the pathogenic mutation types of...Genetic defects are one of the most important etiologies of severe to profound sensorineural hearing loss and play an important role in determining cochlear implantation outcomes.While the pathogenic mutation types of a number of deafness genes have been cloned,the pathogenesis mechanisms and their relationship to the outcomes of cochlear implantation remain a hot research area.The auditory performance is considered to be affected by the etiology of hearing loss and the number of surviving spiral ganglion cells,as well as others.Current research advances in cochlear implantation for hereditary deafness,especially the relationship among clinic-types,genotypes and outcomes of cochlear implantation,will be discussed in this review.展开更多
Objective It was reported that p53 apoptotic peptide (N37) could inhibit p73 gene through being bound with iASPP,which could induce tumor cell apoptosis. To further explore the function of N37,we constructed the cloni...Objective It was reported that p53 apoptotic peptide (N37) could inhibit p73 gene through being bound with iASPP,which could induce tumor cell apoptosis. To further explore the function of N37,we constructed the cloning plasmid of DNA fragment encoding p53 (N37) apoptotic peptide by using DNA synthesis and molecular biology methods. Methods According to human p53 sequence from the GenBank database,the primer of p53(N37) gene was designed using Primer V7.0 software. The DNA fragment encoding p53 (N37) apoptotic peptide was amplified by using self-complementation polymerase chain reaction (PCR) method and cloned into the pGEM-T Easy vector. The constructed plasmid was confirmed by endonuclease analysis and sequencing. Results The insertion of objective DNA fragment was confirmed by plasmid DNA enzyme spectrum analysis. p53(N37)gene was successfully synthesized chemically in vitro. The sequencing result of positive clone was completely identical to the human p53(N37) sequence in GenBank using BLAST software (http://www.ncbi.nlm.nih.gov/cgi-bin /BLASTn). Conclusion The cloning of DNA fragment encoding p53(N37) apoptotic peptide was constructed by using DNA synthesis and pGEM-T Easy cloning methods. With the constructed plasmid,we could further investigate the function of N37 peptide.展开更多
Objective： We have previously found that mbr is a regulatory element of the bcl2 gene. The objective of this study is to isolate and identify the proteins binding to the 37 mbr in the 3 ＇ -end of the mbr. Methods： ...Objective： We have previously found that mbr is a regulatory element of the bcl2 gene. The objective of this study is to isolate and identify the proteins binding to the 37 mbr in the 3 ＇ -end of the mbr. Methods： Streptavidin magnetic particles were ligated to concatameric oligonucleotides of 37 mbr and incubated with the nuclear extracts of Jurkat cells. The DNA-binding proteins were eluted and then resolved by SDS-PAGE. After silver staining, the protein bands were excised and subjected to MALDI-TOF MS. Results： Several protein bands were detected after the isolation with magnetic particles, and Splicing factor, proline- and glutamine-rich（SFPQ）, Poly（ADP-ribose） polymerase I（PARP）, and promyelocytic leukemia protein（PML） were identified by MALDI-TOF MS. Conclusion： Several proteins were isolated and identified from the 37 mbr-protein complex. Results of this study establish a foundation for further study of the mechanisms by which mbr executes its regulatory function.展开更多
文摘Background: Psoriasis is considered a common skin disease, marked by the production and elevation of inflammatory plaques that regularly shed scales resulting from extensive skin epithelial cell proliferation. T lymphocytes, neutrophils, and other leukocytes enter the irritated skin, resulting in epidermal keratinocyte hyperplasia, vascular hyperplasia, ectasia, and T lymphocyte, neutrophil other forms of leukocyte infiltration. Aim of the Work: the study aimed to investigate the role of IL-37 and VEGF gene expression in the pathogenesis of psoriasis in Egyptian patients. Methodology: Polymerase chain reaction techniques (PCR) were applied to detect VEGF in the skin homogenates of psoriasis patients. In addition, the ELIZA technique was applied to investigate IL-37 in skin homogenates. One hundred cases have been divided into two groups: 50 healthy volunteers as the group I healthy control;50 psoriasis patients as group II. PCR real-time technology was assessed through extracted DNA samples for VEGF amplification in skin homogenate. Result: Our results revealed that psoriasis patients significantly had a substantial reduction in IL-37 compared to the control group (p Conclusion: There is a significant inverse association between IL-37 and VEGF in psoriasis patients. Study findings revealed that IL-37 gene expression decreases while VEGF gene expression increases in psoriatic individuals. Such a measurement may be beneficial in determining the severity of the condition, as well as taking into consideration of the disease’s diagnosis.
文摘This study was carried out to investigate the possible enhancement of im- munogenicity of the carboxyl-terminal peptide of β-hCG which is made up of 37 amino acid residues (109-145) and contains the specific epitope (antigenic determinant) of hCG. Materials &. Methods hCGβ-CTP37 tetraploid cDNA was constructed by linking four hCGβ-CTP37 cDNAs together. The product was then subcloned into the E. coli expres- sion vector pQE60 to construct the expression vector pQE60/ (hCGβ-CTP37)4. Recom- binant (hCGβ-CTP37)4 was expressed in E. colt-X-blue. Results Western blot analysis showed that the tetraploid of hCGβ-CTP37 had an ap- parent molecular weight of 20 kD and had relatively stronger anti-hCG antibody-bind- ing activity compared with the diploid from. Conclusion The tetraploid of hCGβ-CTP37 may be a more potent immunogen for raising anti-hCG vaccines for fertility regulation or suppression of tumor.
文摘Genetic defects are one of the most important etiologies of severe to profound sensorineural hearing loss and play an important role in determining cochlear implantation outcomes.While the pathogenic mutation types of a number of deafness genes have been cloned,the pathogenesis mechanisms and their relationship to the outcomes of cochlear implantation remain a hot research area.The auditory performance is considered to be affected by the etiology of hearing loss and the number of surviving spiral ganglion cells,as well as others.Current research advances in cochlear implantation for hereditary deafness,especially the relationship among clinic-types,genotypes and outcomes of cochlear implantation,will be discussed in this review.
文摘Objective It was reported that p53 apoptotic peptide (N37) could inhibit p73 gene through being bound with iASPP,which could induce tumor cell apoptosis. To further explore the function of N37,we constructed the cloning plasmid of DNA fragment encoding p53 (N37) apoptotic peptide by using DNA synthesis and molecular biology methods. Methods According to human p53 sequence from the GenBank database,the primer of p53(N37) gene was designed using Primer V7.0 software. The DNA fragment encoding p53 (N37) apoptotic peptide was amplified by using self-complementation polymerase chain reaction (PCR) method and cloned into the pGEM-T Easy vector. The constructed plasmid was confirmed by endonuclease analysis and sequencing. Results The insertion of objective DNA fragment was confirmed by plasmid DNA enzyme spectrum analysis. p53(N37)gene was successfully synthesized chemically in vitro. The sequencing result of positive clone was completely identical to the human p53(N37) sequence in GenBank using BLAST software (http://www.ncbi.nlm.nih.gov/cgi-bin /BLASTn). Conclusion The cloning of DNA fragment encoding p53(N37) apoptotic peptide was constructed by using DNA synthesis and pGEM-T Easy cloning methods. With the constructed plasmid,we could further investigate the function of N37 peptide.
基金supported by grants from the National Natural Science Foundation of China(30500585)the Natural Science Foundation of Jiangsu Province(BK2008450)
文摘Objective： We have previously found that mbr is a regulatory element of the bcl2 gene. The objective of this study is to isolate and identify the proteins binding to the 37 mbr in the 3 ＇ -end of the mbr. Methods： Streptavidin magnetic particles were ligated to concatameric oligonucleotides of 37 mbr and incubated with the nuclear extracts of Jurkat cells. The DNA-binding proteins were eluted and then resolved by SDS-PAGE. After silver staining, the protein bands were excised and subjected to MALDI-TOF MS. Results： Several protein bands were detected after the isolation with magnetic particles, and Splicing factor, proline- and glutamine-rich（SFPQ）, Poly（ADP-ribose） polymerase I（PARP）, and promyelocytic leukemia protein（PML） were identified by MALDI-TOF MS. Conclusion： Several proteins were isolated and identified from the 37 mbr-protein complex. Results of this study establish a foundation for further study of the mechanisms by which mbr executes its regulatory function.
