1. Kanatsu-Shinohara M, Ogonuki N, Matoba S, Morimoto H, Shiromoto Y, Ogura A, et al. Regeneration of spermatogenesis by mouse germ cell transplantation into allogeneic and xenogeneic testis primordia or organoids. Stem Cell Rep 2022; 17(4): 924-35.

2. Kadivarian H, Alimohammadi S, Rahimi-Feyli P, Moghaddam AA. Evaluation of the effect of follicle stimulating hormone (FSH) on survival and colonization of caprine spermatogonial stem cells during in vitro culture (Persian). Qom UMSJ 2020; 13(12): 1-12. [in Persian]

3. Nagano M, Ryu BY, Brinster CJ, Avarbock MR, Brinster RL. Maintenance of mouse male germ line stem cells in vitro. Bio Reprod. 2003; 68(6): 2207-14.

4. Lee R, Park HJ, Lee WY, Han MG, Park JH, Moon J, et al. Effect of Epidermal Growth Factor on the Colony-formation Ability of Porcine Spermatogonial Germ Cells. Biotechnol Bioproc E 2021; 26: 677–87.

5. Zandi A, Rahimi-Feyli P, Moghaddam AA. Effect of testosterone on of ovine spermatogonial colony formation in-vitro (Persian). Feyz 2016; 20 (3): 205-13. [in Persian]

6. Kuo YC, Au HK, Hsu JL, Wang HF, Lee CJ, Peng SW, et al. IGF1R promotes symmetric self-renewal and migration of alkaline phosphatase+ germ stem cells through HIF-2α-OCT4/CXCR4 loop under hypoxia. Stem Cell Rep 2018; 10(2): 524–37.

7. Yao J, Zuo H, Gao J, Wang M, Wang D, Li X. The effects of IGF-1 on mouse spermatogenesis using an organ culture method. Biochem Biophys Res Commun 2017; 491(3): 840-7.

8. Qasemi-Panahi B, Tajik P, Movahedin M, Moghaddam G, Geranmayeh MH. Study of insulin-like growth factor 1 effects on bovine type a spermatogonia proliferation and viability. Turk J Vet Anim Sci 2014; 38(6): 693-8.

9. Xi HM, Ren YJ, Ren F, Li Y, Feng TY, Wang Z, et al. Recent advances in isolation, identification, and culture of mammalian spermatogonial stem cells. Asian J Androl 2022; 24(1): 5-14.

10. Heidari B, Rahmati-Ahmadabadi M, Akhondi MM, Zarnani AH, Jeddi-Tehrani, et al. Isolation, identification, and culture of goat spermatogonial stem cells using c-kit and PGP9. 5 markers. J Assist Reprod Genet 2012; 29(10): 1029-38.

11. Aponte PM, Soda T, Teerds KJ, Mizrak SC, Van de Kant H J, De Rooij DG. Propagation of bovine spermatogonial stem cells in vitro. Reprod 2008; 136(5): 543-57.

12. Abbasi H, Tahmoorespur M, Hosseini, SM, Nasiri Z, Bahadorani, M, Hajian M, et al THY1 as a reliable marker for enrichment of undifferentiated spermatogonia in the goat. Theriogenology 2013; 80(8): 923-32.

13. Hermann B, Sukhwani M, Hansel M, Orwig K. Spermatogonial stem cells in higher primates: are there differences to those in rodents? Reprod 2010; 139(3): 479–93.

14. Kubota H, Avarbock MR, Brinster RL. Growth factors essential for self-renewal and expansion of mouse spermatogonial stem cells. Proc Natl Acad Sci U S A. 2004; 101(47): 16489–94.

15. Zargarzadeh M, Tajik P, Movahedin M, Akbari G, Qasemi-Panahi B. Immediate cryopreservation of isolated Ghezel ram spermatogonial stem cells and subsequent co-culture with Sertoli cells preserve their survival and functional capacity. Eurasia J Biosci 2019; 13(2): 1129-35.

16. Reding SC, Stepnoski AL, Cloninger EW, Oatley JM. THY1 is a conserved marker of undifferentiated spermatogonia in the pre-pubertal bull testis. Reprod 2010; 139(5): 893-903.

17. Givelet M, Firlej V , Lassalle B, Sophie Gille A, Lapoujade C , Holtzman I, et al. Transcriptional profiling of β-2M - SPα-6 + THY1 + spermatogonial stem cells in human spermatogenesis. Stem Cell Report 2022; 17(4): 936-52.

18. Azizi H, Ranjbar M, Rahaiee S, Govahi M, Skutella T. Investigation of VASA Gene and Protein Expression in Neonate and Adult Testicular Germ Cells in Mice in Vivo and In Vitro. Cell J 2020; 22(2): 171-7.

19. Bahadorani M, Hosseini MS, Abbasi H, Abedi P, Nasr-Esfahani M H. Effect of different serum concentrations on short term in vitro culture of goat testicular cells. Russ J Dev Biol 2016; 47(5): 269-77.

20. Ahmadi M, Rahimi-Feyli P, Moghaddam A, Alimohammadi S. Assessment of the cryoprotective effects of fetal bovine serum (FBS) and trehalose on the viability rate of caprine spermatogonial stem cells (Persian). Feyz 2021; 25(1): 714-23. [in Persian]

21. Choi Y, Jung Y, Kim S, Kim J, Jung H, Yoon M. Stage-Dependent Expression of Protein Gene Product 9.5 in Donkey Testes. Animals. 2020; 10(11): 2169.

22. Song H, Park HJ, Lee WY, Lee KH. Models and Molecular Markers of Spermatogonial Stem Cells in Vertebrates: To Find Models in Nonmammals. Stem Cells Int 2022; 2022.

23. Al-Samerria S, Radovick S. The Role of Insulin-like Growth Factor-1 (IGF-1) in the Control of Neuroendocrine Regulation of Growth. Cells. 2021; 10(10): 2664.

24. Huang YH, Chin CC, Ho HN, Chou CK, Shen CN, Kuo HC, et al. Pluripotency of mouse spermatogonial stem cells maintained by IGF-1-dependent pathway. FASEB J 2009; 23(7):2076–87

25. Solgi M, Rahimi-Feyli P, Nikousefat Z, Moghaddam, AA. Effect of insulin-like growth factor (IGF-1) on proliferation of ovine spermatogonia stem cells. Onl J Vet Res 2016; 20(5): 327-34.

26. Binsila BK, Selvaraju S, Ghosh SK, Ramya L, Arangasamy A, Ranjithkumaran R, Bhatta R. EGF, GDNF, and IGF-1 influence the proliferation and stemness of ovine spermatogonial stem cells in vitro. J Assist Reprod Genet 2020; 37: 2615–30.

27. Xin Zhao 1 , Weican Wan 1 , Bin Li 1 , Xianyu Zhang 1 , Mao Zhang 1 , Zhenfang Wu 1 2 , Huaqiang Yang. 1. Isolation and in vitro expansion of porcine spermatogonial stem cells. Reprod Domest Anim 2022; 57(2): 210-20.

28. Palma GA, Müller M, Brem G. Effect of insulin-like growth factor I (IGF-I) at high concentrations on blastocyst development of bovine embryos produced in vitro. J Reprod Fertil 1997; 110(2): 347-53.

29. LeRoith D, Roberts CT. The insulin-like growth factor system and cancer. Cancer Lett 2003; 195(2): 127-37.

30. Lin M, Liu X, Zheng H, Huang X, Wu Y, Huang A, et al. IGF-1 enhances BMSC viability, migration, and anti-apoptosis in myocardial infarction via secreted frizzled-related protein 2 pathway. Stem Cell Res Ther 2020; 11: 22.

31. Alinejad G, Khorrami N, Tajik P. Effect of IGF-I on the colonizing ability, viability and apoptosis related genes expression in sheep’s spermatogonial stem cells. Vet Res Biol Prod 2022.