Critical Variables in the Conversion of Marrow Cells to Skeletal Muscle
Overview
Authors
Affiliations
We have studied conversion of marrow cells to skeletal muscle in cardiotoxin-injured anterior tibialis muscle in a green fluorescent protein (GFP) to C57BL/6 transplantation model and ascertained that total body irradiation (TBI) with establishment of chimerism is a critical factor. Local irradiation has little effect in lower doses and was detrimental at higher doses. Whole body (1000 cGy) with shielding of the leg or a combination of 500 cGy TBI and 500 cGy local radiations was found to give the best results. In non-obese diabetic-severe combined immunodeficient (NOD-SCID) recipients, we were able to show that conversion could occur without radiation, albeit at relatively lower levels. Within 3 days of cardiotoxin injury, GFP-positive mononuclear cells were seen in the muscle, and within 2 weeks GFP-positive muscle fibers were identified. Conversion rates were increased by increasing donor-cell dose. Timing of the cardiotoxin injury relative to the transplantation was critical. These studies show that variables in transplantation and injury are critical features of marrow-to-muscle conversions. Irradiation primarily effects conversion by promoting chimerism. These data may explain the differences in the literature for the frequency of marrow-to-skeletal muscle conversion and can set a platform for future models and perhaps clinical protocols.
Huang L, Li F, Ye L, Yu F, Wang C Cell Prolif. 2023; 56(4):e13413.
PMID: 36727213 PMC: 10068960. DOI: 10.1111/cpr.13413.
Quesenberry P, Goldberg L, Aliotta J, Dooner M Front Oncol. 2014; 4:56.
PMID: 24772390 PMC: 3983521. DOI: 10.3389/fonc.2014.00056.
Madala S, Edukulla R, Schmidt S, Davidson C, Ikegami M, Hardie W Am J Respir Cell Mol Biol. 2013; 50(4):777-86.
PMID: 24199692 PMC: 4068918. DOI: 10.1165/rcmb.2013-0042OC.
Induction and survival of binucleated Purkinje neurons by selective damage and aging.
Magrassi L, Grimaldi P, Ibatici A, Corselli M, Ciardelli L, Castello S J Neurosci. 2007; 27(37):9885-92.
PMID: 17855603 PMC: 6672639. DOI: 10.1523/JNEUROSCI.2539-07.2007.
Aliotta J, Sanchez-Guijo F, Dooner G, Johnson K, Dooner M, Greer K Stem Cells. 2007; 25(9):2245-56.
PMID: 17556595 PMC: 3376082. DOI: 10.1634/stemcells.2007-0128.