PSMB8
Proteasome subunit beta type-8 precursor (EC 3.4.25.1) (Low molecular mass protein 7) (Macropain subunit C13) (Multicatalytic endopeptidase complex subunit C13) (Proteasome component C13) (Proteasome subunit beta-5i) (Really interesting new gene 10 protein) [LMP7] [PSMB5i] [RING10] [Y2]
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To explore the associated proteins of the hypothalamus in aging rat models with intervention by Qiongyugao(QYG) based on iTRAQ technology, find out the target protein candidates and investigate the mechanism of delaying aging for Qiongyugao. The results showed that Qiongyugao increased GSH-Px activity in serum and SOD activity in liver; the total protein count identified by iTRAQ was 3 522, FDR<1%. There were 20 kinds of differential proteins between the blank group and model group; there were 295 kinds of differential proteins between model group and QYG group, and 40 kinds of them had a difference multiple ≥1.30 (the maximum value was 1.47). Compared with blank group, there were 14 kinds of proteins that were down-regulated in model group and up-regulated in QYG group. Combined with literature search and gene function search, 12 kinds of target protein candidates were screened out ： ST18, Ptprc, PSMB8, INPP4B, Shc3, Pik3r1, PIP5K1C, Nampt, Rasgrp2, Asah2, Pdpk1, and Map2k7. The expression of nuclear factor-kappa B (NF-κB) in the hypothalamic inflammatory pathway was detected by Western blot and the results showed that its expression level in model group(0.96) was higher than that in control group(0.85), while its expression level in QYG group(0.89) was lower than that in model group. Q-PCR results showed that the relative mRNA expression levels of PIP5K1C and Ptprc in model group were significantly lower than those in blank group(P<0.01); while compared with the model group, the mRNA expression levels of PIP5K1C and Ptprc in QYG group were significantly increased(P<0.01) . This result was consistent with proteomics data. QYG may delay aging by regulating hypothalamic inflammatory reaction.
MeSH Terms
- Aging
- Animals
- Drugs, Chinese Herbal
- Hypothalamus
- Leukocyte Common Antigens
- Phosphotransferases (Alcohol Group Acceptor)
- Rats
Keywords
- NF-κB
- Qiongyugao(QYG)
- anti-aging
- hypothalamus
- iTRAQ
- target protein candidates
Preimplantation genetic diagnosis (PGD) is important for screening genetic and chromosome mutations in embryos so that the efficiency of assisted reproductive treatment can be increased and birth defects can be decreased; however, some studies have reported a risk from this technology as well as other assisted reproductive technologies. We have developed a blastomere biopsy mouse model to assess the potential effects of blastomere biopsy that was one key procedure in PGD on the fertility of female mice at different ages. We showed that female fertility was decreased in the biopsied mouse model with an increase in age. Moreover, the ovarian weight, serum hormone levels, and the number of primordial, primary, preantral, and antral stage follicles were also decreased in the middle-aged biopsied mouse model. To elucidate the underlying molecular mechanism, we did proteomics analysis on ovarian tissues from puberty biopsied and nonbiopsied mice of the 23 differentially expressed proteins that were screened for in both groups, 3 proteins (PSMB8, ALDH1A1, and HSPA4) were selected and identified by Western blotting and quantitative RT-PCR methods, which showed the 3 proteins to regulate 12 cellular pathways. Furthermore, these three proteins were shown to be located in ovarian tissues, and the dynamic changes of expression profiling in middle-aged biopsied and nonbiopsied mice were demonstrated. The present study showed that blastomere biopsy technology impairs fertility when mice are middle-aged, which possibly resulted in abnormal expression profiling of PSMB8, ALDH1A1, and HSPA4 proteins. Thus, additional studies should be performed to assess the overall risk of blastomere biopsies during PGD procedures.
MeSH Terms
- Aging
- Aldehyde Dehydrogenase
- Aldehyde Dehydrogenase 1 Family
- Animals
- Biopsy
- Blastomeres
- Female
- Fertility
- Gene Expression Profiling
- Gene Expression Regulation
- Genes, Regulator
- HSP110 Heat-Shock Proteins
- Humans
- Mice
- Ovary
- Pregnancy
- Preimplantation Diagnosis
- Proteasome Endopeptidase Complex
- Retinal Dehydrogenase
- Signal Transduction