EFFECT OF LACK OF pttg-1 ON DEVELOPMENT OF AUTOIMMUNE PROCESSES

S. Afanasyev, Y. Filak, R. Stoyka


DOI: http://dx.doi.org/10.30970/sbi.0502.146

Abstract


PTTG (Pituitary Tumour Transforming gene-1) is a protoncogene which is expressed in testes, thick and thin bowel, and in activated lymphocytes. Protein product of this gene is involved in mitosis and cell cycle regulation. Lack of pttg in mice (pttg-КО) leads to thymic hyperplasia and splenic hypoplasia. Specific aim of this work was to investigate presence of anti-dsDNA, anti-core histons antibodies and also check affinity of producated antibodies of wild type mice and mice wit lack of pttg-1. The level of antibo­dies to single strand, double strand DNA and core histons of wild type and mice lacking pttg were investigated. Affinity of autoantibodies to double strand native DNA was studied. The revealed changes of autoantibodies level to double strand DNA and core histones suggest that the lack of pttg-1 causes the development of autoimmune processes.


Keywords


pttg-1, autoimmune processes, affinity

References


1. Ройт А., Бростофф Дж., Мейл Д. Иммунология. Москва: Мир, 2000.

2. Якобисяк М. Імунологія. Вінниця: Нова книга, 2004. 672 с.

3. Li M., Wan Y., Sanjabi S., Robertson A. Transforming growth factor-beta regulation of immune responses. Annu. Rev. Immunol, 2006; 24: 99-146.
https://doi.org/10.1146/annurev.immunol.24.021605.090737
PMid:16551245

4. Li M.O., Wan Y.Y., Sanjabi S. et al. Regulation of Immune Responses by TGFβ. Annu. Rev. Immunol, 2006; 24: 99-146.
https://doi.org/10.1146/annurev.immunol.24.021605.090737
PMid:16551245

5. Murphy K. M., Ouyang W., Farrar J. D. et al. Signaling and transcription in T helper development. Annu. Rev. Immunol, 2000; 18: 451-494.
https://doi.org/10.1146/annurev.immunol.18.1.451
PMid:10837066

6. Szabo S.J., Sullivan B.M., Peng S.L., Glimcher L.H. Molecular mechanisms regulating Th1 immune responses. Annu. Rev. Immunol, 2003; 21: 713-58.
https://doi.org/10.1146/annurev.immunol.21.120601.140942
PMid:12500979

7. Boehm U., Klamp T., Groot M., Howard J.C. Cellular responses to interferon-γ. Annu. Rev. Immunol, 1997; 15: 749-95.
https://doi.org/10.1146/annurev.immunol.15.1.749
PMid:9143706

8. Tasaka T., Tohyama K., Kishimoto M. et al. Myelodysplastic syndrome with chromosome abnormalities: a nationwide survey in Japan. Leukemia, 2008; 22: 1874-1881.
https://doi.org/10.1038/leu.2008.199
PMid:18668133

9. Ronald Feitosa Pinheiro, Maria Regina Rґ egis Silva, Maria de Lourdes L.F. Chauffaille. The 5q- syndrome and autoimmune phenomena: Report of three cases. Leukemia Research, 2006; 30: 507-510.
https://doi.org/10.1016/j.leukres.2005.08.025
PMid:16219353

10. Pei L., Melmed S. Isolation and Characterization of aPituitary Tumor-Transforming Gene (PTTG). Molecular Endocrinology, 1997; 11(4): 433-41.
https://doi.org/10.1210/mend.11.4.9911
PMid:9092795

11. Smith V.E., Franklyn J.A., McCabe C.J. Pituitary tumor-transforming gene and its binding factor in endocrine cancer. Expert Rev. Mol. Med, 2010; 12: 38.
https://doi.org/10.1017/S1462399410001699
PMid:21129230

12. Grossman A.B. The molecular biology of pituitary tumors: a personal perspective. Pituitary, 2009; 12(3): 265-70.
https://doi.org/10.1007/s11102-008-0158-7
PMid:19058014

13. Yu R., Melmed S., Pathogenesis of pituitary tumors. Prog. Brain Res, 2010; 182: 207-27.
https://doi.org/10.1016/S0079-6123(10)82009-6

14. Zhang X., Horwitz G.A., Presant T.R. et al. Structure, Expression and Function of Human Pituitary Tumor Transforming Gene (PTTG). Molecular Endocrinology,1999; 13(1): 156-166.
https://doi.org/10.1210/mend.13.1.0225
PMid:9892021

15. Stoika R., Yu R., Melmed S. Expression and function of pituitary tumor transforming gene for T-lymphocyte activation. British Journal of Hematology, 2002; 119: 1070-1074.
https://doi.org/10.1046/j.1365-2141.2002.03941.x
PMid:12472590

16. Wang Z., Moro E., Kovacs K. et al. Pituitary tumor transforming gene-null male mice exhibit impaired pancreatic beta cell proliferation and diabetes. Proc. Natl. Acad. Sci. USA, 2003; 100(6): 3428-32.
https://doi.org/10.1073/pnas.0638052100
PMid:12626748 PMCid:PMC152309

17. Wang Z., Yu R., Melmed S. Mice lacking Pituitary Tumor Transforming Gene Show Testicular and Splenic Hypoplasia, Thymic Hyperplasia, Trombocytopenia, Aberrant Cell Cycle Progression, and Premature Centromere Division. Molecular Endocrinology, 2001; 15(11): 1870-1879.
https://doi.org/10.1210/mend.15.11.0729
PMid:11682618


Refbacks

  • There are currently no refbacks.


Copyright (c) 2011 Studia biologica

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.