For people living with lupus – an autoimmune disease that affects the immune system – one of the most serious complications is kidney damage, a condition called lupus nephritis. A groundbreaking study from researchers at Berlin’s Max Delbrück Center has revealed something surprising: the cells scientists thought were mainly responsible for this kidney damage may not be the whole story. A smaller, specialized population of immune cells called innate lymphoid cells (ILCs) might be the real amplifiers driving the damage.
What is lupus nephritis?
Lupus, or systemic lupus erythematosus, is an autoimmune disease most often diagnosed in people aged 15 to 45, with most patients being young women. In lupus, the immune system mistakenly attacks healthy tissues throughout the body. When it attacks the kidneys, the result is lupus nephritis – inflammation that can damage kidney function and, in severe cases, lead to kidney failure requiring dialysis or transplant.
You can read the full original article from ScienceDaily here: Surprising mechanism of lupus kidney damage identified.
Scientists knew that lupus caused kidney damage, and they knew that proteins called autoantibodies (which the immune system produces to attack healthy tissue) were involved. But they didn’t fully understand which cells orchestrated the attack. The new research shows that ILCs – a small group of immune cells that live permanently in tissues rather than circulating in the bloodstream – play a crucial role.
Why this matters for kidney patients
This discovery has direct implications for kidney patients living with lupus. When ILCs become activated in the kidney, they ramp up production of a protein called GM-CSF, which recruits and multiplies immune cells called macrophages. A flood of macrophages then causes severe tissue scarring, a process called fibrosis. When researchers blocked the ILC activation pathway in mice, kidney damage was prevented – even without changing autoantibody levels.
The research opens a new door: instead of trying to suppress the entire immune system (which can leave patients vulnerable to infection), doctors might soon be able to specifically target ILCs and prevent kidney damage. This could mean better outcomes for lupus patients and fewer cases progressing to kidney failure.
What this does – and does not – mean right now
This is early research, published in the journal Nature in August 2024. The team studied mouse kidneys and then compared their findings to tissue from human lupus patients, confirming that ILCs are present in human kidneys too. However, moving from mouse studies to human treatments takes time. The researchers themselves emphasize that more work is needed to understand how to target ILCs safely in human patients.
This is not a treatment yet – it’s a roadmap. But it’s a promising one. The hope is that new antibody therapies targeting the ILC pathway could one day prevent lupus nephritis patients from needing dialysis or transplant, preserving kidney function and quality of life.
You can read the full original article from ScienceDaily here: Surprising mechanism of lupus kidney damage identified.
If you have lupus and are concerned about kidney health, speak with your renal team about monitoring and treatment options. For more information about kidney disease and research, visit our research and news section or explore renal care resources.
Questions about lupus and kidney health? Contact us at support@mrikpa.org.uk or call 07745 242 684.
Source: ScienceDaily / Max Delbrück Center, August 2024 – read the original article
This article is provided for general information and awareness purposes only and was believed to be accurate at the time of publishing. It is not intended as medical advice – please always consult your doctor or renal team for guidance on your individual circumstances. Images used are for illustration purposes only and may not be medically or editorially accurate. While we take every care, errors can occur. If you spot an inaccuracy, please let us know at support@mrikpa.org.uk.
Source: ScienceDaily, August 2024 – read the original article
