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Deciphering the molecular mechanisms governing cell fate transition and lineage commitment by H3K4me1/2 demethylation

Award Number: F31HD121428
ORGANIZATION: NATIONAL INSTITUTE OF CHILD HEALTH AND HUMAN DEVELOPMENT
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: FELLOWSHIP/SCHOLARSHIP/STUDENT LOANS
PERIOD OF PERFORMANCE START DATE: 03/01/2026
PERIOD OF PERFORMANCE END DATE: 02/29/2028

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Deciphering the molecular mechanisms governing cell fate transition and lineage commitment by H3K4me1/2 demethylation - Project Summary/Abstract Epigenetic modifiers govern cell fate transition during animal development and their mutations drive multiple human congenital disorders; however, the molecular mechanisms underlying the roles of epigenetic modifiers in these normal and pathological processes remain poorly understood. It is widely believed that epigenetic modifiers function through the epigenetic marks they catalyze. Nevertheless, the discoveries of catalytic- independent role of epigenetic modifiers challenge this view, raising the question about the biological function of epigenetic marks. Mono-methylation of histone H3 at lysine 4 (H3K4me1) is a reliable mark of enhancers that shape cell identity, and its reconfiguration accompanies the differentiation of pluripotent stem cells, suggesting that the regulation of H3K4me1 plays an instructive role in cell fate transition. To examine this hypothesis, we investigated the catalytic function of LSD1 and LSD2, two paralogous histone demethylases targeting H3K4me1, in regulating gene expression during cell fate transition. Using state-of-the-art approaches such as precise genome engineering, epigenetic and transcriptomic profiling, and stem cell differentiation, we demonstrate functional synergism between the demethylase activity of LSD1 and LSD2 in regulating cellular differentiation. Based on these compelling preliminary data, here we propose to dissect the molecular mechanisms underlying how the demethylase activity of LSD1/2 regulates cell fate transition. The results generated from our proposed studies will not only reveal novel molecular mechanisms underlying the roles of H3K4me1 in gene regulation and cell fate transition, but also provide insights into understanding the pathogenesis of diseases driven by LSD1/2 loss-of-function. This research aligns with the NIH mission to advance our understanding of fundamental biological processes and contribute to knowledge relevant to developmental disorders and regenerative medicine.


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: 2026 ( Subtotal = $50,114 )
2026	2026	CASE WESTERN RESERVE UNIVERSITY	10900 EUCLID AVE	CLEVELAND	OH	44106	CUYAHOGA	USA	Child Health and Human Development Extramural Research	002	1	4/1/2026	NEW	$576
2026	2026	CASE WESTERN RESERVE UNIVERSITY	10900 EUCLID AVE	CLEVELAND	OH	44106	CUYAHOGA	USA	Child Health and Human Development Extramural Research	001	1	1/29/2026	NEW	$0
2026	2026	CASE WESTERN RESERVE UNIVERSITY	10900 EUCLID AVE	CLEVELAND	OH	44106	CUYAHOGA	USA	Child Health and Human Development Extramural Research	000	1	1/29/2026	NEW	$49,538
														Subtotal = $50,114

Grand Total All Awards = $50,114

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Deciphering the molecular mechanisms governing cell fate transition and lineage commitment by H3K4me1/2 demethylation

Award Number: F31HD121428

ORGANIZATION: NATIONAL INSTITUTE OF CHILD HEALTH AND HUMAN DEVELOPMENT

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: FELLOWSHIP/SCHOLARSHIP/STUDENT LOANS

PERIOD OF PERFORMANCE START DATE: 03/01/2026

PERIOD OF PERFORMANCE END DATE: 02/29/2028

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