Transserosal migration of enteric neural stem cells: Developing an avian colon model

Area of Science:

• Regenerative Medicine
• Gastroenterology
• Developmental Biology

Background:

• Stem cell transplantation offers potential for enteric neuropathies.
• Current methods face challenges in delivering cells to large areas of mature colon.
• Transserosal stem cell migration in mature colon remains unproven.

Purpose of the Study:

• To develop an avian model for demonstrating stem cell migration across the intact serosa of mature colon.
• To establish a platform for studying stem cell delivery in complex gastrointestinal tissues.

Main Methods:

• Quail embryo hindguts were grafted onto chicken chorioallantoic membranes.
• Grafts were harvested at 2 and 8 days for immunohistological analysis.
• Tissues were assessed for apoptosis, maturity, mucosal, and serosal preservation.

Main Results:

• Grafts showed transient mucosal necrosis followed by recovery.
• By day 8, 19/23 grafts had mature, intact mucosa.
• Nine grafts exhibited circumferential serosal preservation with no apoptosis.

Conclusions:

• Avian colon can be harvested with intact serosa and remains viable for at least 8 days.
• This avian model provides a viable and economical platform for studying stem cell migration across mature colon serosa.
• The findings support further investigation into stem cell therapies for enteric neuropathies.