OBJECTIVETo investigate the polymorphisms of platelet membrane glycoprotein genes related to human platelet alloantigen (HPA)-1 to 17w.

METHODSThe DNA segments of platelet membrane glycoprotein genes related to HPA-1 to 17w were amplified using author's designed primers. The amplification products were purified and directly sequenced to identify the HPA genotype and glycoprotein gene polymorphisms.

RESULTSThirteen new single nucleotide polymorphisms (SNPs) and a micro-satellite sequence were found in the glycoprotein genes from the 112 random samples, in which two SNPs (1333G/A and 1960G/A) in ITGB3 gene result in two amino acid change (V419M and E628K) on glycoprotein GPIIIa.

CONCLUSIONNew variants in platelet membrane glycoprotein genes were identified, which may lead to structure change of platelet membrane glycoprotein and affect the accuracy of partial HPA genotyping method.

Antigens, Human Platelet ; genetics ; Humans ; Isoantigens ; genetics ; Platelet Membrane Glycoproteins ; genetics ; Polymorphism, Single Nucleotide

Carrier Proteins ; genetics ; Cloning, Molecular ; DNA, Complementary ; Humans ; Liver ; chemistry ; Membrane Glycoproteins ; genetics

OBJECTIVE: To explore the genetic basis for a Chinese pedigree affected with amyloidosis cutis dyschromica. METHODS: High-throughput sequencing was carried out for the proband. Bioinformatic analysis was used to identify the pathogenic variants. The result was verified by Sanger sequencing. RESULTS: A homozygous nonsense variant c.565C>T (p.Arg189X) of the GPNMB gene was identified in the proband, his elder brother and younger sister, which resulted a truncated protein with loss of function. The father of the proband was a heterozygous carrier for the variant. The genotype of his mother was unknown since she had passed away. Based on the American College of Medical Genetics and Genomics standards and guidelines, the c.565C>T variant was predicted to be likely pathogenic (PS3+ PM2+ PP1+PP3). CONCLUSION The novel homozygous GPNMB variant probably underlay the amyloidosis cutis dyschromica in this pedigree. Above finding has expanded the spectrum of GPNMB gene variants.
Amyloidosis, Familial/genetics* ; China ; Female ; Homozygote ; Humans ; Male ; Membrane Glycoproteins/genetics* ; Mutation ; Pedigree

A boy, aged 6 years, attended the hospital due to global developmental delay for 6 years and recurrent fever and convulsions for 5 years. The boy was found to have delayed mental and motor development at the age of 3 months and experienced recurrent fever and convulsions since the age of 1 year, with intermittent canker sores and purulent tonsillitis. During the fever period, blood tests showed elevated white blood cell count, C-reactive protein, and erythrocyte sedimentation rate, which returned to normal after the fever subsides. Electroencephalography showed epilepsy, and genetic testing showed compound heterozygous mutations in the GPAA1 gene. The boy was finally diagnosed with glycosylphosphatidylinositol biosynthesis deficiency 15 (GPIBD15) and periodic fever. The patient did not respond well to antiepileptic treatment, but showed successful fever control with glucocorticoid therapy. This article reports the first case of GPIBD15 caused by GPAA1 gene mutation in China and summarizes the genetic features, clinical features, diagnosis, and treatment of this disease, which provides a reference for the early diagnosis and treatment of GPIBD15.
Humans ; Male ; Fever ; Glycosylphosphatidylinositols/genetics* ; Membrane Glycoproteins/genetics* ; Mutation ; Rare Diseases ; Seizures ; Child

The aim of this study was to clone the chicken zp1 gene encoding zona pellucida 1 (Zp1) and investigate its tissues expression profile and its effect on osteoblast mineralization. The expression level of zp1 was quantified in various tissues of laying hens and in the tibia of the pre- and post-sexual maturity by RT-qPCR. Zp1 overexpressed vector was transfected into chicken calvarial osteoblasts which were induced differentiation for 8 days, and the extracellular mineral and the expression of mineralization-related genes were detected. The full-length chicken zp1 gene is 3 045 bp, encoding 958 amino acids residuals, and has two N-glycosylation sites. The highest expression level of the zp1 gene was found in the liver, followed by the tibia and yolk membrane, while no expression was detected in the heart and eggshell gland. Compared with the pre-sexual maturity hens, the concentration of estrogen (E2) in plasma, the content of glycosaminoglycan (GAG) and the expression level of the zp1 gene in the tibia with post-sexual maturity were higher. The extracellular matrix and the level of osteoblast mineralization-related genes showed a significantly upregulated expression in chicken calvarial osteoblasts with Zp1 overexpressed and addition of estrogen. The expression of the zp1 gene is tissue-specific and positively regulated osteoblast mineralization under the action of estrogen, laying the foundation for elucidating the functional properties of Zp1 in chicken bones during the egg production period.
Female ; Animals ; Zona Pellucida Glycoproteins ; Membrane Glycoproteins/metabolism* ; Chickens/genetics* ; Egg Proteins/metabolism* ; Receptors, Cell Surface ; Estrogens

OBJECTIVES: To investigate the effects of injury time, postmortem interval (PMI) and postmortem storage temperature on mRNA expression of glycoprotein non-metastatic melanoma protein B (Gpnmb), and to establish a linear regression model between Gpnmb mRNA expression and injury time, to provide aimed at providing potential indexes for injury time estimation. METHODS: Test group SD rats were anesthetized and subjected to blunt contusion and randomly divided into 0 h, 4 h, 8 h, 12 h, 16 h, 20 h and 24 h groups after injury, with 18 rats in each group. After cervical dislocation, 6 rats in each group were collected and stored at 0 ℃, 16 ℃ and 26 ℃, respectively. The muscle tissue samples of quadriceps femoris injury were collected at 0 h, 12 h and 24 h postmortem at the same temperature. The grouping method and treatment method of the rats in the validation group were the same as above. The expression of Gpnmb mRNA in rat skeletal muscle was detected by RT-qPCR. The Pearson correlation coefficient was used to evaluate the correlation between Gpnmb mRNA expression and injury time, PMI, and postmortem storage temperature. SPSS 25.0 software was used to construct a linear regression model, and the validation group data was used for the back-substitution test. RESULTS: The expression of Gpnmb mRNA continued to increase with the prolongation of injury time, and the expression level was highly correlated with injury time (P<0.05), but had little correlation with PMI and postmortem storage temperature (P>0.05). The linear regression equation between injury time (y) and Gpnmb mRNA relative expression (x) was y=0.611 x+4.489. The back-substitution test proved that the prediction of the model was accurate. CONCLUSIONS The expression of Gpnmb mRNA is almost not affected by the PMI and postmortem storage temperature, but is mainly related to the time of injury. Therefore, a linear regression model can be established to infer the time of injury.
Animals ; Rats ; Glycoproteins ; Linear Models ; Melanoma ; Membrane Glycoproteins/genetics* ; Postmortem Changes ; Rats, Sprague-Dawley ; RNA, Messenger/metabolism* ; Time Factors

Adult ; Amyloid Precursor Protein Secretases ; genetics ; Hidradenitis Suppurativa ; genetics ; Humans ; Male ; Membrane Glycoproteins ; genetics ; Membrane Proteins ; genetics ; Mutation ; genetics ; Presenilin-1 ; genetics

BACKGROUND/AIMS: Serotonin is thought to be an important neurotransmitter in the pathogenesis of irritable bowel syndrome (IBS). It is reported that functional polymorphism in the promotor region of the serotonin transporter gene is related with the subtypes of IBS and shows racial difference. However, a functional relation between polymorphism and IBS is not clear. The aim of this study was to investigate 5-hydroxytryptamine transporter (5-HTT) gene polymorphism in patients with IBS. METHODS: For fifty-six healthy controls and 33 patients with IBS fulfilling Rome II criteria, 5'-flank promotor region of 5-HTT gene was analyzed by polymerase chain reaction. RESULTS: The genotypes of healthy controls were S/S (57.1%), S/L (37.5%), and L/L (5.4%). Those of IBS patients were S/S (54.5%), S/L (36.4%), and L/L (9.1%). IBS patients were divided into three groups: diarrhea predominant (n=15; S/S, 40%; S/L, 53.3%; L/L, 6.7%), constipation predominant (n=12; S/S, 75.0%; S/L, 8.3%; L/L, 16.7%), diarrhea-constipation alternating type (n=6; S/S, 50%; S/L, 50%). There was no statistical difference in the 5-HTT gene polymorphism between patients and controls, and according to the subtypes of IBS patients (p=0.135). CONCLUSIONS: There was no relationship between serotonin transporter gene polymorphism and IBS. However, allele S/S genotype was most prominent genotype in both controls and patients.
Adult ; English Abstract ; Female ; Humans ; Irritable Bowel Syndrome/*genetics ; Male ; Membrane Glycoproteins/*genetics ; Membrane Transport Proteins/*genetics ; Middle Aged ; Nerve Tissue Proteins/*genetics ; *Polymorphism, Genetic ; Serotonin/genetics

OBJECTIVETo study and research the transcription pattern of UL131A-128 mRNA in human cytomegalovirus (HCMV) clinical low passage strains.

METHODSThe UL131A-128 mRNAs of from different clinical strains and kinetic periods were amplified using 3' RACE and analyzed by sequencing. Meanwhile, clones containing UL131A-128 transcripts in a HCMV cDNA library of clinical strain were selected and sequenced.

RESULTSIt is successful to obtain the transcription pattern of UL131A, UL130 and UL128 gene in HCMV clinical low passage strains, the UL131A gene consisted of two exons and the coding region of UL130 gene was not interrupted by any intron in the region as reported before. However, the transcript of UL128 gene showed two patterns, one pattern consisted of the three exons, the length is 519bp, and the other one contained the three exons and the sequence of the first intron further, the length is 642bp. The quantities of UL128 transcript containing the sequence of the first intron were higher than that of transcript only containing the three exons in the studied clinical strains at all kinetic classes. It was demonstrated that the UL131A-128 mRNA were expressed with immediately early, early and late kinetics. The result of 3'RACE and HCMV cDNA library of clinical strain is conformity.

CONCLUSIONSOur results demonstrated that the UL131A, UL130 and UL128 genes were transcribed with 3'-coterminal, although the initiation points of their mRNA may be different. The variation of the transcripts found in our study indicated complex nature of transcription of UL131A-128 genes in HCMV clinical strains.

Cytomegalovirus ; genetics ; Gene Library ; Humans ; Membrane Glycoproteins ; genetics ; RNA, Messenger ; analysis ; Transcription, Genetic ; Viral Envelope Proteins ; genetics

OBJECTIVETo construct a eukaryotic expression plasmid containing human triggering receptor expressed on myeloid cells-1(TREM-1) gene.

METHODSThe entire gene coding region of human TREM-1 was amplified from total RNA of human peripheral blood by means of RT-PCR. The fragment of TREM-1 was cloned to vector pUCm-T. After digestion by restriction endonuclease BamH I and Pst I, the fragment was subcloned into the eukaryotic expressing vector pEGFP-C3. This recombinant vector was transfected into 293 cells using liposome. The expression level of TREM-1 was determined by fluorescence microscope and Western blot assay. The recombinant TREM-1 vector was transfected into THP-1 cells. After stimulation with 100 ng/ml LPS for 24 h, the mRNA levels of TNF-α and IL-1β were measured using RT-PCR.

RESULTThe expression vector was constructed, and the result of the DNA sequencing showed that the constructed plasmid containing the TREM-1 gene. Fluorescence microscope and Western blot analysis showed that TREM-1 protein was expressed in 293 cells successfully. After transfection into THP-1 cells, recombinant TREM-1 could upregulate the mRNA levels of TNF-α and IL-1β.

CONCLUSIONEukaryotic expression plasmid pEGFP-TREM-1 is successfully constructed and showed biological activity.

Cells, Cultured ; Genetic Vectors ; Humans ; Membrane Glycoproteins ; genetics ; Plasmids ; genetics ; Receptors, Immunologic ; genetics ; Transfection ; Triggering Receptor Expressed on Myeloid Cells-1