Brown Adipose Tissue: A Potential Site for Islet Transplantation. 2020

Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.

Islet transplantation is a promising treatment in patients with complicated diabetes. The ideal transplant site that can extend islet graft survival and reduce the required number of engrafted islets remains to be established. Donor islets were isolated from red fluorescent protein (RFP) mice and transplanted into interscapular brown adipose tissue (BAT) or unilateral inguinal white adipose tissue of age-matched diabetic RFP mice. Blood glucose and body weight of the mice were monitored, and vitality and function of ectopic RFP islets were detected by fluorescence imaging, histological examination, and intraperitoneal glucose tolerance test (GTT). BAT enabled the marginal number of grafted islets (80 islets) to restore blood glucose, insulin level, and GTT to normal values in all diabetic recipient mice in the short term after graft, and maintained these values for 1 year at the end of the experiment. Importantly, in the short term after transplantation, abundant extra- and intraislet neovasculatures were observed in BAT, but not in white adipose tissue, which allowed the ectopic islets to retain typical architecture and morphology and contributed to the normal GTT. Moreover, the islet-engrafted BAT displayed normal structure and morphology without significant immunocyte infiltration, and the recipient mice also showed normal lipid levels in the blood. BAT remarkably enhances the viability and biological function of the transplanted ectopic islets. Moreover, the anatomical location of BAT lends itself to biopsy, removal, and islet retransplantation, which strongly suggests the BAT as a potential desirable site for islet transplantation in basic and clinical research.

UI MeSH Term Description Entries
D007328 Insulin A 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1). Iletin,Insulin A Chain,Insulin B Chain,Insulin, Regular,Novolin,Sodium Insulin,Soluble Insulin,Chain, Insulin B,Insulin, Sodium,Insulin, Soluble,Regular Insulin
D007515 Islets of Langerhans Irregular microscopic structures consisting of cords of endocrine cells that are scattered throughout the PANCREAS among the exocrine acini. Each islet is surrounded by connective tissue fibers and penetrated by a network of capillaries. There are four major cell types. The most abundant beta cells (50-80%) secrete INSULIN. Alpha cells (5-20%) secrete GLUCAGON. PP cells (10-35%) secrete PANCREATIC POLYPEPTIDE. Delta cells (~5%) secrete SOMATOSTATIN. Islands of Langerhans,Islet Cells,Nesidioblasts,Pancreas, Endocrine,Pancreatic Islets,Cell, Islet,Cells, Islet,Endocrine Pancreas,Islet Cell,Islet, Pancreatic,Islets, Pancreatic,Langerhans Islands,Langerhans Islets,Nesidioblast,Pancreatic Islet
D008164 Luminescent Proteins Proteins which are involved in the phenomenon of light emission in living systems. Included are the "enzymatic" and "non-enzymatic" types of system with or without the presence of oxygen or co-factors. Bioluminescent Protein,Bioluminescent Proteins,Luminescent Protein,Photoprotein,Photoproteins,Protein, Bioluminescent,Protein, Luminescent,Proteins, Bioluminescent,Proteins, Luminescent
D008297 Male Males
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D008822 Mice, Transgenic Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN. Transgenic Mice,Founder Mice, Transgenic,Mouse, Founder, Transgenic,Mouse, Transgenic,Mice, Transgenic Founder,Transgenic Founder Mice,Transgenic Mouse
D001786 Blood Glucose Glucose in blood. Blood Sugar,Glucose, Blood,Sugar, Blood
D002001 Adipose Tissue, Brown A thermogenic form of adipose tissue composed of BROWN ADIPOCYTES. It is found in newborns of many species including humans, and in hibernating mammals. Brown fat is richly vascularized, innervated, and densely packed with MITOCHONDRIA which can generate heat directly from the stored lipids. Brown Fat,Hibernating Gland,Brown Adipose Tissue,Fat, Brown,Tissue, Brown Adipose
D005723 gamma-Glutamyltransferase An enzyme, sometimes called GGT, with a key role in the synthesis and degradation of GLUTATHIONE; (GSH, a tripeptide that protects cells from many toxins). It catalyzes the transfer of the gamma-glutamyl moiety to an acceptor amino acid. GGTP,Glutamyl Transpeptidase,gammaglutamyltransferase,gamma-Glutamyl Transpeptidase,Transpeptidase, Glutamyl,Transpeptidase, gamma-Glutamyl,gamma Glutamyl Transpeptidase,gamma Glutamyltransferase
D006085 Graft Survival The survival of a graft in a host, the factors responsible for the survival and the changes occurring within the graft during growth in the host. Graft Survivals,Survival, Graft,Survivals, Graft

Related Publications

Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
February 2022, JCI insight,
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
January 2023, Methods in molecular biology (Clifton, N.J.),
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
July 2023, Experimental gerontology,
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
June 2016, Nature reviews. Endocrinology,
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
October 2014, Journal of internal medicine,
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
October 2013, Hepatobiliary surgery and nutrition,
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
January 2013, Frontiers in endocrinology,
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
August 2019, Molecular aspects of medicine,
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
March 2016, Proceedings of the National Academy of Sciences of the United States of America,
Kang Xu, and Raoying Xie, and Xiaolin Lin, and Junshuang Jia, and Nan Zeng, and Wangen Li, and Dong Xiao, and Tao Du
June 2012, Circulation,
Copied contents to your clipboard!