PUMCH Maps the 'Culprit Cells' Behind Heart Attacks — Published in Nature Communications
PUMCH's vascular surgery team co-led a 169-patient study identifying two stem cell subtypes in arterial fat tissue that cause atherosclerotic plaques to rupture — the mechanism behind most heart attacks and strokes.
Scientists Finally Identify the Cells That Make Heart Attack Plaques Explode
Most heart attacks don't happen because arteries slowly close. They happen because a fatty plaque in the artery wall suddenly ruptures, triggering a blood clot that blocks the vessel within minutes. Understanding what makes a stable plaque become an unstable, rupture-prone "ticking bomb" has been one of cardiology's greatest unsolved mysteries.
A landmark study co-led by Dr. Liu Bao, Deputy Director of Vascular Surgery at Peking Union Medical College Hospital (PUMCH), has now identified the cellular culprits — and the findings were published in Nature Communications (IF 15.7).
The Discovery
By analyzing tissue from 169 patients, the research team created a comprehensive single-cell atlas of perivascular adipose tissue (the fat surrounding blood vessels) and discovered that stem cells in this tissue come in two functionally distinct subtypes:
| Stem Cell Subtype | Function | Effect on Plaque |
|---|---|---|
| CD55⁺ stem cells | Drive abnormal new blood vessel growth via FGF2 pathway | Destabilize plaques — new leaky vessels cause bleeding inside the plaque, weakening it until it ruptures |
| CXCL14⁺ stem cells | Recruit immune cells via CXCL12-CXCR4 signaling | Promote inflammation — immune cells accumulate and attack the plaque cap, thinning it |
Together, these two mechanisms explain why some plaques remain stable for decades while others suddenly rupture and cause heart attacks or strokes.
Why This Matters for Patients
This research opens the door to:
- Predictive blood tests — Measuring CD55⁺ or CXCL14⁺ cell activity could identify patients at high risk of plaque rupture before a heart attack occurs
- Targeted therapies — Drugs that specifically block FGF2 or CXCL12-CXCR4 pathways could stabilize dangerous plaques without the side effects of current treatments
- Personalized prevention — Patients could be stratified by their specific plaque biology rather than treated with one-size-fits-all statin therapy
Cardiovascular Treatment Cost: China vs Western Countries
| Procedure | China (PUMCH) | United States |
|---|---|---|
| Carotid endarterectomy | $8,000 - $15,000 | $30,000 - $60,000 |
| Coronary stenting (PCI) | $5,000 - $12,000 | $30,000 - $70,000 |
| Carotid stenting | $10,000 - $18,000 | $35,000 - $70,000 |
| Comprehensive cardiovascular screening | $500 - $1,500 | $3,000 - $8,000 |
China prices include procedure, hospital stay, and follow-up.
About PUMCH Vascular Surgery
- Ranked #1 hospital in China
- Dr. Liu Bao — Deputy Director of Vascular Surgery, leading translational cardiovascular research
- Published in Nature Communications (IF 15.7)
- Located in central Beijing
Frequently Asked Questions
Can I get advanced cardiovascular screening at PUMCH to assess my plaque stability?
Yes. PUMCH offers comprehensive cardiovascular screening packages that include advanced imaging such as coronary CT angiography, carotid ultrasound with plaque characterization, and inflammatory biomarker panels. These assessments help identify high-risk plaques before they cause heart attacks or strokes. The entire screening can typically be completed in 1 to 2 days.
How does this research change how my heart disease would be treated today?
While the specific targeted therapies based on this research are still in development, the findings are already influencing clinical practice at PUMCH. Cardiologists now use more detailed plaque imaging and inflammatory markers to stratify patient risk and tailor treatment intensity. Patients identified as having unstable plaques receive more aggressive intervention rather than waiting for symptoms.
Is it worth traveling to China for cardiovascular treatment when I have access to good hospitals at home?
China's top cardiovascular centers perform among the highest procedure volumes in the world, which directly correlates with better outcomes. Additionally, comprehensive cardiovascular screening and treatment in China costs 60-80% less than equivalent care in the US or Europe. For patients facing expensive procedures or seeking second opinions on complex cases, the combination of expertise and affordability makes China worth considering.
How long do I need to stay in Beijing for a comprehensive cardiovascular screening at PUMCH?
A complete cardiovascular screening at PUMCH can typically be completed in 1 to 2 days. This includes advanced imaging such as coronary CT angiography and carotid ultrasound, blood biomarker panels, and a consultation with a cardiologist to review results. Most international patients schedule 3 to 5 days total in Beijing to allow time for any follow-up tests or specialist appointments.
Concerned about cardiovascular risk? Request a free cardiovascular consultation →
This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider for diagnosis and treatment decisions.
