Monday, February 16, 2026 2/16/2026

Polymorphisms link Protein Kinase C-α to Cryptosporidia susceptibility in 1st year of life

Award Number: F30DK124003
ORGANIZATION: NATIONAL INSTITUTE OF DIABETES & DIGESTIVE & KIDNEY DISEASES
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: FELLOWSHIP/SCHOLARSHIP/STUDENT LOANS
PERIOD OF PERFORMANCE START DATE: 07/01/2020
PERIOD OF PERFORMANCE END DATE: 05/31/2024

Group Awards By:

View Award Description

Polymorphisms link Protein Kinase C-α to Cryptosporidia susceptibility in 1st year of life - PROJECT SUMMARY Cryptosporidia is a diarrheal pathogen with an important impact on global health. Overall, diarrheal disease is estimated to be responsible for 10% of under 5-year old child mortality, and the recent Global Burden of Diseases analysis of diarrheal mortality found that Cryptosporidia was second only to rotavirus as a cause of death in children under five years old (5). Nitazoxanide, currently the only approved drug for Cryptosporidia infection, is only moderately effective for treatment of immunocompetent patients. Furthermore, it is only equivalent to placebo in severely immunocompromised patients. Clinical presentation of Cryptosporidia infection is variable in severity; some patients experience severe diarrheal illness while some infections remain subclinical. Although the cause for the wide spectrum of disease is poorly understood, several studies have demonstrated long-term clinical implications of both asymptomatic and symptomatic infection. We performed a genome-wide association study (GWAS) on infants in Bangladesh within the first year of life. We evaluated the association between 6.5 million single nucleotide polymorphisms (SNPs) across the human genome and symptomatic Cryptosporidia infection in three independent patient cohorts. This analysis revealed a highly significant statistical association of multiple SNPs in the PRKCA gene and susceptibility to Cryptosporidia diarrhea. Each copy of the risk allele increased the risk of contracting cryptosporidiosis by 2.4 times in the first year of life. The most significant SNP in PRKCA is an eQTL in the GTex database, however, a definitive link between PKCα and Cryptosporidia has not yet been established. The PKCα kinase is a primary regulator of actin and during intracellular invasion, Cryptosporidia induces host cell actin remodeling. Further investigation into how the PRKCA gene variation relates to PKCα function and susceptibility to Cryptosporidia infection will provide insight into the pathogenesis of an important human pathogen to cause disease. We hypothesize that host PKCα is required for Cryptosporidia invasion of intestinal epithelium through remodeling of actin cytoskeleton. Based on this preliminary data, we aim to characterize (i) the role of PKCα in Cryptosporidia invasion of the intestinal epithelium in vitro and in vivo (ii) define the impact of the SNPs on PRKCA expression and downstream function, and (iii) identify if PRKCA expression mediates severity of disease in children. To accomplish this, the research proposal includes active investigation of Cryptosporidia both in the field and at the bench. Here, we propose bridging two approaches for scientific discovery by using molecular tools to examine PRKCA and monitoring clinical outcomes in genotyped human children. The overarching goal of these independent yet interacting aims will be the translational development of host PKCα as a potential target to advance critically needed treatments for cryptosporidiosis.


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: 2025 ( Subtotal = -$2,262 )
2025	2023	RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA	1001 EMMET ST N	CHARLOTTESVILLE	VA	22903	CHARLOTTESVILLE CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	001	4	12/23/2024	NON-COMPETING CONTINUATION	$2,275
2025	2023	RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA	1001 EMMET ST N	CHARLOTTESVILLE	VA	22903	CHARLOTTESVILLE CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	4	12/19/2024	NON-COMPETING CONTINUATION	-$4,537
2025	2023	RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA	1001 EMMET ST N	CHARLOTTESVILLE	VA	22903	CHARLOTTESVILLE CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	002	4	3/25/2025	NON-COMPETING CONTINUATION	$0
														Subtotal = -$2,262

Issue Date FY: 2023 ( Subtotal = $52,694 )
2023	2023	RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA	1001 N EMMET ST	CHARLOTTESVILLE	VA	22903	CHARLOTTESVILLE CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	4	6/9/2023	NON-COMPETING CONTINUATION	$52,694
														Subtotal = $52,694

Issue Date FY: 2022 ( Subtotal = $51,752 )
2022	2022	RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA	1001 N EMMET ST	CHARLOTTESVILLE	VA	22903	CHARLOTTESVILLE CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	3	6/17/2022	NON-COMPETING CONTINUATION	$51,752
														Subtotal = $51,752

Issue Date FY: 2021 ( Subtotal = $34,752 )
2021	2021	RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA	1001 N EMMET ST	CHARLOTTESVILLE	VA	22903	CHARLOTTESVILLE CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	2	6/22/2021	NON-COMPETING CONTINUATION	$34,752
														Subtotal = $34,752

Issue Date FY: 2020 ( Subtotal = $34,099 )
2020	2020	RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA	1001 N EMMET ST	CHARLOTTESVILLE	VA	22903	CHARLOTTESVILLE CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	001	1	5/21/2020	NEW	$0
2020	2020	RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA	1001 N EMMET ST	CHARLOTTESVILLE	VA	22903	CHARLOTTESVILLE CITY	USA	Diabetes, Digestive, and Kidney Diseases Extramural Research	000	1	5/21/2020	NEW	$34,099
														Subtotal = $34,099

Grand Total All Awards = $171,035

Top

All Categories

About

Search

Reports

Data Submission

Award Information

Polymorphisms link Protein Kinase C-α to Cryptosporidia susceptibility in 1st year of life

Award Number: F30DK124003

ORGANIZATION: NATIONAL INSTITUTE OF DIABETES & DIGESTIVE & KIDNEY DISEASES

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: FELLOWSHIP/SCHOLARSHIP/STUDENT LOANS

PERIOD OF PERFORMANCE START DATE: 07/01/2020

PERIOD OF PERFORMANCE END DATE: 05/31/2024

Federal Websites

Department of Health & Human Services

HHS Operating Divisions

HHS Staff Divisions

Download A Document Viewer