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Using ex vivo, in vivo models and patient mutations to interrogate pancreatic exocrine-endocrine cross talk

Award Number: U01DK135095
ORGANIZATION: NATIONAL INSTITUTE OF DIABETES & DIGESTIVE & KIDNEY DISEASES
OPDIV: NIH
AWARD CLASS: COOPERATIVE AGREEMENT
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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PROJECT SUMMARY Type 1 diabetes and its metabolic consequences continue to be among the most significant biomedical challenges in the US and worldwide today. In addition to morbidities specifically related to diabetes the disease is associated with complications such as renal failure, lipid disorders, cardiovascular disease and cancer and is a major cause of death worldwide. Thus there is an urgent need for a better understanding of the pathogenesis that promotes the loss of insulin-secreting beta cells to plan better therapeutics to combat the disease. Several studies have argued that diverse cell types that make up the pancreatic niche contribute to the pathogenesis of the disease process. Thus a better understanding of the inter-cellular communication between major cells such as the acinar and duct cells and islet cells are warranted. We have studied the role of the mutant carboxy ester lipase (CEL) gene, expressed in acinar cells, on its ability to be taken up by beta cells and cause defects in its function and growth. The goal of this proposal is to discover the changes that occur when secretome from acinar versus duct cells are incubated with human islet and ß-cells. The data from these studies will generate new hypothesis for testing that will allow a deeper interrogation of the cross-talk between human acinar, duct and islet cells. We will address the following Aims in this proposal: Aim 1) Determine the ability of human acinar versus human duct cells to directly impact islet cell function. We will isolate and characterize EVs, from human induced pluripotent stem (hIPS) cell derived acinar- versus duct-lineage committed organoids, and incubate them with human islet/ß-cells and human pancreas slices to directly examine the consequences on islet cell biology. We will also examine the EV cargo with a particular focus on fragments derived from transfer RNAs. Aim 2) We will interrogate the ability of EVs, derived from acinar-derived organoids generated from the hiPS cells from MODY8 patients, to directly regulate human islet-ß-cell biology. The use of human organoids and human pancreas slices will provide translational relevance of our studies. The results and datasets obtained from these experiments will complement the efforts of the Human Islet Research Network and provide novel resources to be shared with the larger scientific community.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2024 ( Subtotal = $0 )
2024	2023	JOSLIN DIABETES CENTER, INC.	1 JOSLIN PL	BOSTON	MA	02215	SUFFOLK	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	2	4/30/2024	NON-COMPETING CONTINUATION	$0
														Subtotal = $0

Issue Date FY: 2023 ( Subtotal = $919,535 )
2023	2023	JOSLIN DIABETES CENTER, INC.	1 JOSLIN PL	BOSTON	MA	02215	SUFFOLK	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	001	2	7/19/2023	NON-COMPETING CONTINUATION	$919,535
2023	2022	JOSLIN DIABETES CENTER, INC.	1 JOSLIN PL	BOSTON	MA	02215	SUFFOLK	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	1	11/4/2022	NEW	$0
														Subtotal = $919,535

Issue Date FY: 2022 ( Subtotal = $958,436 )
2022	2022	JOSLIN DIABETES CENTER, INC.	1 JOSLIN PL	BOSTON	MA	02215	SUFFOLK	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	1	9/19/2022	NEW	$958,436
														Subtotal = $958,436

Grand Total All Awards = $1,877,971

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Using ex vivo, in vivo models and patient mutations to interrogate pancreatic exocrine-endocrine cross talk

Award Number: U01DK135095

ORGANIZATION: NATIONAL INSTITUTE OF DIABETES & DIGESTIVE & KIDNEY DISEASES

OPDIV: NIH

AWARD CLASS: COOPERATIVE AGREEMENT

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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