Evidence map›Paper›PMID 40072535›Full record

ArticleDiabetologia2025

Intrapancreatic adipocytes and beta cell dedifferentiation in human type 2 diabetes.

Na Zhang, Qiman Sun, Jiaxin Zhang, Ruonan Zhang, Siyi Liu, Xuelian Zhao, Jing Ma, Xiaomu Li

Abstract read
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In one paragraph

Article in Diabetologia, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Na Zhang *Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.ORCID http://orcid.org/0009-0002-6175-9662
Qiman Sun *Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China.ORCID http://orcid.org/0000-0002-7638-9089
Jiaxin Zhang *Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.ORCID http://orcid.org/0009-0004-7652-8191
Ruonan ZhangDepartment of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.ORCID http://orcid.org/0000-0003-4882-2284
Siyi LiuFudan University, Shanghai, China.ORCID http://orcid.org/0009-0002-5370-6317
Xuelian ZhaoDepartment of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China.ORCID http://orcid.org/0009-0001-0595-1978
Jing MaDepartment of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.ORCID http://orcid.org/0009-0003-3771-6715
Xiaomu LiDepartment of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China. li.xiaomu@zs-hospital.sh.cn.ORCID http://orcid.org/0000-0001-8337-0207

Funding

National Natural Science Foundation of China 82170808National Natural Science Foundation of China 82370825Shanghai Municipal Health Commission 20224Z0004
6 · The paper itself

Abstract

aims/hypothesisFat deposition in the pancreas is implicated in beta cell dysfunction and the progress of type 2 diabetes. However, there is limited evidence to confirm the correlation and explore how pancreatic fat links with beta cell dysfunction in human type 2 diabetes. This study aimed to examine the spatial relationship between pancreatic fat and islets in human pancreases.

methodsHistological analysis of pancreatic specimens from 50 organ donors (15 with type 2 diabetes, 35 without) assessed pancreatic fat content variation among individuals with diabetes and its correlation with estimated beta cell mass and cell distribution within islets. Bioinformatic analysis of single-cell RNA-seq of 11 type 2 diabetic donors (from the Human Pancreatic Analysis Project database) explored the impact of high pancreatic fat content on beta cell gene expression and cell fate. Validation of bioinformatic results was performed with the above diabetic pancreases.

resultsPancreatic fat content was higher in individuals with type 2 diabetes (10.24% [3.29-13.89%] vs 0.74% [0.34-5.11%], p<0.001), negatively correlated with estimated beta cell mass (r=-0.675, p=0.006) and positively with alpha-to-beta cell ratio (r=0.608, p=0.016). Enrichment analysis indicated that in diabetic donors with higher pancreatic fat content, the expression of ALDH1A3, beta cell dedifferentiation marker, in both alpha and beta cells was significantly increased, and in beta cells, the expression of NPY decreased. Pseudotime analysis revealed beta cell dedifferentiation and transdifferentiation towards alpha cells in diabetic donors with higher pancreatic fat content, with decreased expression of genes related to beta cell maturation and function, including INSM1, MafA and NPY. Concurrently, pathways related to inflammation and immune response were activated. Histologically, pancreatic fat content correlated positively with the percentage of beta cells positive for aldehyde dehydrogenase 1 family member A3 (ALDH1A3) within the islets (r=0.594, p=0.020) and the ALDH1A3 positivity rate in beta cells (r=0.615, p=0.015). And the number of T cells adjacent to adipocytes was related to the distribution pattern of adipocytes and the dedifferentiation phenotype in islets. CONCLUSIONS/

interpretationHigher pancreatic fat content was accompanied by increased beta cell dedifferentiation in the individuals with diabetes. Clusters of adipocytes significantly contribute to higher pancreatic fat content and immune cell recruitment. Overall, the interactions among adipocytes, immune cells and beta cells in the pancreas microenvironment might contribute to beta cell failure and dedifferentiation in type 2 diabetes.

Indexed as

AdipocytesCell DedifferentiationDiabetes Mellitus, Type 2Insulin-Secreting CellsPancreasAdultAgedFemaleGlucagon-Secreting CellsHumansIslets of LangerhansMaleMiddle AgedAdipocytesBeta cellDedifferentiationPancreatic fat contentT cellsType 2 diabetes

Identifiers

What Socratic holds

Textmetadata
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.