COMPLEXIN GENE AND MALE INFERTILITY
Main Article Content
Keywords
Complexin, Expression, Male Infertility, RT-PCR
Abstract
Infertility is the failure to have offspring after one year of regular unprotected intercourse. Acrosomal exocytosis is a prerequisite for successful fertilization and it involves numerous proteins. Complexin genes play an essential role in a controlled secretion of acrosome content. The objective of the present study was to determine the expression of the complexin gene in healthy and infertile male spermatozoa by using Real-Time Polymerase Chain Reaction. The demographic parameters like age, semen volume, sperm count, motility and immotile sperm were analyzed. There was no significant difference in the age and semen volume between normal and infertile groups. A significant difference was observed when the sperm count (p< 0.0000008) and motility (p<0.00000001) were compared between the groups. RT-PCR data analysis showed a fold change difference of 0.0433. From this fold change difference, we determine that our gene of interest is downregulated and the student’s t-test was also applied which also showed that there is downregulation of the complexin gene in infertile men. The difference observed in analyzed data indicates that there is a significant role of the complexin gene in male infertility and their expression was inversely proportional to each other in normal and infertile males and complexin is surely playing a major role in male infertility. However, it is highly recommended that future studies investigate the cause of the down-regulation of the complexin gene as it plays an important role in the exocytosis of sperm nuclei.
References
[2] M. Boulicault et al., "The future of sperm: a biovariability framework for understanding global sperm count trends," Human Fertility, vol. 25, no. 5, pp. 888-902, 2022/10/20 2022, doi: 10.1080/14647273.2021.1917778.
[3] J. Auger, F. Eustache, C. Chevrier, and B. Jégou, "Spatiotemporal trends in human semen quality," Nature Reviews Urology, vol. 19, no. 10, pp. 597-626, 2022.
[4] S. Özer, A. Özer, and H. Kıran, "Evaluation and Interpretation of Female Infertility," Duzce Medical Journal, vol. 24, no. Special Issue, pp. 49-55, 2022.
[5] T. Marić, A. Fučić, and A. Aghayanian, "Environmental and occupational exposures associated with male infertility," Archives of Industrial Hygiene and Toxicology, vol. 72, no. 2, pp. 101-113, 2021.
[6] P. A. Balestrini et al., "Membrane hyperpolarization abolishes calcium oscillations that prevent induced acrosomal exocytosis in human sperm," The FASEB Journal, vol. 35, no. 6, p. e21478, 2021.
[7] M. I. Zafar, S. Lu, and H. Li, "Sperm-oocyte interplay: an overview of spermatozoon’s role in oocyte activation and current perspectives in diagnosis and fertility treatment," Cell & bioscience, vol. 11, no. 1, p. 4, 2021.
[8] H. Tanaka et al., "Transcriptomic profiling on localized gastric cancer identified CPLX1 as a gene promoting malignant phenotype of gastric cancer and a predictor of recurrence after surgery and subsequent chemotherapy," Journal of Gastroenterology, vol. 57, no. 9, pp. 640-653, 2022.
[9] J. Meyer, "Characterization of the Complexin-SNARE Protein Network in Different Synaptic Systems," 2023.
[10] U. T. Lux et al., "Cell types and synapses expressing the SNARE complex regulating proteins complexin 1 and complexin 2 in mammalian retina," International Journal of Molecular Sciences, vol. 22, no. 15, p. 8131, 2021.
[11] X. Chen et al., "Three-dimensional structure of the complexin/SNARE complex," Neuron, vol. 33, no. 3, pp. 397-409, 2002.
[12] T. K. Karamanos and G. M. Clore, "Large chaperone complexes through the lens of nuclear magnetic resonance spectroscopy," Annual review of biophysics, vol. 51, no. 1, pp. 223-246, 2022.
[13] K. Szpotkowski, K. Wójcik, and A. Kurzyńska-Kokorniak, "Structural studies of protein–nucleic acid complexes: A brief overview of the selected techniques," Computational and Structural Biotechnology Journal, vol. 21, pp. 2858-2872, 2023.
[14] U. T. Lux et al., "Light-dependent regulation of neurotransmitter release from rod photoreceptor ribbon synapses involves an interplay of Complexin 4 and Transducin with the SNARE complex," Frontiers in Molecular Neuroscience, vol. 17, p. 1308466, 2024.
[15] F. Azimi, T. Dean, K. Minari, L. Basso, T. Vance, and V. Serrão, "A Frame-by-Frame Glance at Membrane Fusion Mechanisms: From Viral Infections to Fertilization. Biomolecules 2023, 13, 1130," ed, 2023.
[16] S. Liu et al., "CFAP61 is required for sperm flagellum formation and male fertility in human and mouse," Development, vol. 148, no. 23, p. dev199805, 2021.
[17] X. Zhang, R. Huang, Y. Zhou, W. Zhou, and X. Zeng, "IP3R channels in male reproduction," International Journal of Molecular Sciences, vol. 21, no. 23, p. 9179, 2020.
[18] K. Takasawa, H. Kanegane, K. Kashimada, and T. Morio, "Endocrinopathies in inborn errors of immunity," Frontiers in immunology, vol. 12, p. 786241, 2021.
[19] M. Arafat et al., "Pathogenic variations in Germ Cell Nuclear Acidic Peptidase (GCNA) are associated with human male infertility," European Journal of Human Genetics, vol. 29, no. 12, pp. 1781-1788, 2021.
[20] R. Shaheen, F. Subhan, S. Sultan, K. Subhan, and F. Tahir, "Prevalence of Infertility in a Cross Section of Pakistani Population," Pakistan Journal of Zoology, vol. 42, pp. 389-393, 2010.
[21] A. Sharma, S. Minhas, W. S. Dhillo, and C. N. Jayasena, "Male infertility due to testicular disorders," The Journal of Clinical Endocrinology & Metabolism, vol. 106, no. 2, pp. e442-e459, 2021.
[22] M. L. Eisenberg et al., "Male infertility," Nature Reviews Disease Primers, vol. 9, no. 1, p. 49, 2023.
[23] S. Baskaran, R. Finelli, A. Agarwal, and R. Henkel, "Diagnostic value of routine semen analysis in clinical andrology," Andrologia, vol. 53, no. 2, p. e13614, 2021.
[24] C. Dai et al., "Advances in sperm analysis: techniques, discoveries and applications," Nature Reviews Urology, vol. 18, no. 8, pp. 447-467, 2021.
[25] S. R. Venati and V. N. Uversky, "Exploring Intrinsic Disorder in Human Synucleins and Associated Proteins," 2024.