Transplantation of Alginate-encapsulated Seminiferous Tubules and Interstitial Tissue into Adult Rats: Leydig Stem Cell Differentiation In vivo?

Overview

Journal Mol Cell Endocrinol

Specialties Cell Biology
Endocrinology
Molecular Biology

Date 2016 Sep 4

PMID 27591121

Citations 7

Authors

Haolin Chen

Shiying Jin

Shengsong Huang

Janet Folmer

June Liu

Renshan Ge

Barry R Zirkin

Affiliations

Soon will be listed here.

Abstract

In vivo and in vitro studies were conducted to determine whether testosterone-producing Leydig cells are able to develop from cells associated with rat seminiferous tubules, interstitium, or both. Adult rat seminiferous tubules and interstitium were isolated, encapsulated separately in alginate, and implanted subcutaneously into castrated rats. With implanted tubules, serum testosterone increased through two months. Tubules removed from the implanted rats and incubated with LH produced testosterone, and cells on the tubule surfaces expressed steroidogenic enzymes. With implanted interstitial tissue, serum levels of testosterone remained undetectable. However, co-culture of interstitium plus tubules in vitro resulted in the formation of Leydig cells by both compartments. These results indicate that seminiferous tubules contain both cellular and paracrine factors necessary for the differentiation of Leydig cells, and that the interstitial compartment contains precursor cells capable of forming testosterone-producing Leydig cells but requires stimulation by paracrine factors from the seminiferous tubules to do so.

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