X chromosome inactivation: how it stays quiet in female immune cells
Official title: Role for nuclear matrix proteins and DNA methylation for XCI maintenance in female lymphocytes
Funded at University of Pennsylvania · NIH-11360631 · Data updated 2026-11-12
This grant studies how X-linked gene silencing works in female immune cells and how failures may contribute to lupus.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Pennsylvania NIH-funded |
| Lab location | 1 site (Philadelphia, United States) |
| Project start | July 7, 2023 |
| Project end | June 30, 2028 |
| Funding year | 2026 |
| Award (this year) | $528,479 |
| NIH project number | 5R01AI168047-04 |
| Project ID | NIH-11360631 on NIH RePORTER |
Who could benefit from this research
✓Could help
Women with autoimmune lupus risk or established SLE who could contribute blood or B cell samples for analysis.
✕Less likely to help
Individuals not affected by lupus or without access to relevant samples may see no direct benefit.
What this research studies
In this project, researchers at the University of Pennsylvania will investigate how X chromosome inactivation is maintained in female B cells and how changes in DNA methylation and nuclear matrix proteins affect this process. They will look at Xist RNA behavior, methylation patterns, and the role of proteins like hnRNPU and SAFB in keeping the Xi quiet. The work combines cell studies from human samples with molecular analyses to understand why certain women are more prone to autoimmune lupus. Findings could point to new targets for predicting risk or guiding therapies for lupus patients. This research is grounded in human biology and aims to translate basic insights into potential clinical advances.
Why it matters
Potential benefit: Understanding XCI maintenance could lead to better understanding of lupus risk and avenues for future diagnostics or treatments.
How similar studies have gone: Prior work shows abnormal X-linked gene expression in SLE B cells, suggesting this area is promising but still exploratory.
Where this research is happening
-
University of Pennsylvania
Philadelphia, United States Active
Researchers
- Principal investigator: Anguera, Montserrat C — University of Pennsylvania
- Study coordinator: Anguera, Montserrat C
Related research
Other NIH-funded projects on the same topics.
-
An integrated mobile health program to reduce SAVA and mental health problems among female sex workers in Kenya
A new mobile health program aims to help female sex workers in Kenya avoid substance abuse, violence, HIV, and depression by delivering group therapy, online resources, and a peer discussion space.
-
HIV in Women: How the virus hides and the immune system changes across life stages
This project looks at how HIV behaves differently in people from puberty through menopause, focusing on how hormones like estrogen may affect HIV persistence and immune responses.
-
Mobile health support to boost PrEP and contraception use among young women in Zambia
A mobile health program helps female university students in Zambia learn about and access HIV prevention and contraception.
-
Computational modeling of female hormone balance and drug responses
A new computational model uses patient-like data to predict how metabolic drugs will work in women across their hormonal cycles and different reproductive stages.
-
How PrEP Drugs Affect HIV Risk in Women and Reproductive Health
This project looks at how PrEP medicines work for women, and whether they influence pregnancy-related processes in the uterus.
-
How female eggs throw away most chromosomes during meiosis
A scientist at UC Davis is studying why only a quarter of chromosomes go into the egg during female reproductive cell division and how errors in this process can cause miscarriage or birth defects.
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.