A Tissue Retrieval and Postharvest Processing Regimen for Rodent Reproductive Tissues Compatible with Long-Term Storage on the International Space Station and Postflight Biospecimen Sharing Program

This research paper discusses a special program called the Biospecimen Sharing Program (BSP), which helps scientists study how animals' bodies work in space by collecting and sharing their tissues after they return to Earth. This is important because it can be hard for many investigators to get access to these unique samples, especially since there aren't as many chances to send live mammals into space anymore due to limited resources like the International Space Station (ISS). The study highlights that when animals are sent on long-term trips in space and need their tissues studied afterward for things such as understanding how they might adapt or survive, it's essential these samples be collected quickly at a remote location. After being fixed to preserve them properly, the specimens then have to travel back down to Earth where scientists can examine them more closely using advanced computer-assisted methods and other techniques for studying biological materials like RNA (a molecule that carries genetic information). The BSP program is designed to make it easier for researchers by providing a systematic way of collecting, preserving, transporting these tissues back from space missions.

The Biospecimen Sharing Program (BSP) represents a significant advancement in the study of whole animal mammalian physiology within space flight, offering an unprecedented opportunity to collect and analyze biological samples shortly after return from extraterrestrial missions. This research paper delves into methodologies for tissue harvesting on-site at remote locations during postflight activities aboard the International Space Station (ISS), followed by expedited shipping of specimens back to Earth where Principle Investigators' laboratories can perform detailed analyses. The study employs a Trisbuffered Saline solution with 0.1% Tween20 for tissue preservation, which is then fixed in ethanol (ETOH) and processed through the Space Transport System (STS). The harvested specimens are subsequently stored at room temperature before being transported to Kennedy Space Center where they undergo Computer-Assisted Permanalysis.