Yamini N, Pourmand G, Amidi F, Salehnia M, Ataei Nejad N, Mougahi SM. Developmental Potential of Vitrified Mouse Testicular Tissue after Ectopic Transplantation.
Cell J 2016;
18:74-82. [PMID:
27054121 PMCID:
PMC4819389 DOI:
10.22074/cellj.2016.3989]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 03/16/2015] [Indexed: 11/23/2022]
Abstract
Objective
Cryopreservation of immature testicular tissue should be considered as an
important factor for fertility preservation in young boys with cancer. The objective of this
study is to investigate whether immature testicular tissue of mice can be successfully
cryopreserved using a simple vitrification procedure to maintain testicular cell viability,
proliferation, and differentiation capacity.
Materials and Methods
In this experimental study, immature mice testicular tissue fragments (0.5-1 mm²) were vitrified-warmed in order to assess the effect of vitrification on
testicular tissue cell viability. Trypan blue staining was used to evaluate developmental
capacity. Vitrified tissue (n=42) and fresh (control, n=42) were ectopically transplanted
into the same strain of mature mice (n=14) with normal immunity. After 4 weeks, the graft
recovery rate was determined. Hematoxylin and eosin (H&E) staining was used to evaluate germ cell differentiation, immunohistochemistry staining by proliferating cell nuclear
antigen (PCNA) antibody, and terminal deoxynucleotidyl transferase (TdT) dUTP Nick-
End Labeling (TUNEL) assay for proliferation and apoptosis frequency.
Results
Vitrification did not affect the percentage of cell viability. Vascular anastomoses
was seen at the graft site. The recovery rate of the vitrified graft did not significantly differ
with the fresh graft. In the vitrified graft, germ cell differentiation developed up to the secondary spermatocyte, which was similar to fresh tissue. Proliferation and apoptosis in the
vitrified tissue was comparable to the fresh graft.
Conclusion
Vitrification resulted in a success rates similar to fresh tissue (control) in
maintaining testicular cell viability and tissue function. These data provided further evidence that vitrification could be considered an alternative for cryopreservation of immature
testicular tissue.
Collapse