COMPOSITIONS FOR PRESERVING INSULIN-PRODUCING CELLS AND INSULIN PRODUCTION AND TREATING DIABETES

摘要

Nuclear Transport Modifiers such as cSN50 and cSN50.1, afford in vivo islet protection following a 2-day course of intense treatment in autoimmune diabetes-prone, non-obese diabetic (NOD) mice, a widely used model of Type 1 diabetes (T1D), which resulted in a diabetes-free state for one year without apparent toxicity and the need to use insulin. cSN50 precipitously reduces the accumulation of islet-destructive autoreactive lymphocytes while enhancing activation-induced cell death of T and B lymphocytes derived from NOD mice. cSN50 attenuated pro-inflammatory cytokine and chemokine production in immune cells in this model of human T1D. cSN50 also provides cytoprotection of beta cells, therefore preserving residual insulin-producing capacity. Because intracellular delivery of a Nuclear Transport Modifier peptide such as cSN50 and cSN50.1 can result in lowering of fasting blood glucose levels and may ameliorate (e.g., reduce, eliminate) insulin resistance, the compositions, methods and cells described herein can also be used for treating Type 2 diabetes (T2D).

主权项

1. A composition comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of a Nuclear Transport Modifier comprising the sequence Xaa Xaa Xaa Xaa Leu Leu Pro Xaa Xaa Leu Leu Ala Leu Leu Ala Pro Xaa Xaa Xaa Gln Arg Lys Arg Gln Lys Xaa Xaa Xaa Xaa (SEQ ID NO: 3), wherein Xaa is any amino acid or is absent.